diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json index a3dac87a27c..899a32fc166 100644 --- a/Godeps/Godeps.json +++ b/Godeps/Godeps.json @@ -367,68 +367,68 @@ }, { "ImportPath": "github.com/cloudflare/cfssl/auth", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/certdb", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/config", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/crypto/pkcs7", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/csr", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/errors", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/helpers", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/helpers/derhelpers", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/info", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/log", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/ocsp/config", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/signer", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/cloudflare/cfssl/signer/local", - "Comment": "1.2.0", - "Rev": "db0d0650b6496bfe8061ec56a92edd32d8e75c30" + "Comment": "1.3.1", + "Rev": "4e2dcbde500472449917533851bf4bae9bdff562" }, { "ImportPath": "github.com/clusterhq/flocker-go", @@ -1689,24 +1689,36 @@ "Rev": "2e02d28350c5fbbad9cfb7e5a1733468b75ab3f9" }, { - "ImportPath": "github.com/google/certificate-transparency/go", - "Rev": "af98904302724c29aa6659ca372d41c9687de2b7" + "ImportPath": "github.com/google/certificate-transparency-go", + "Rev": "1bec4527572c443752ad4f2830bef88be0533236" }, { - "ImportPath": "github.com/google/certificate-transparency/go/asn1", - "Rev": "af98904302724c29aa6659ca372d41c9687de2b7" + "ImportPath": "github.com/google/certificate-transparency-go/asn1", + "Rev": "1bec4527572c443752ad4f2830bef88be0533236" }, { - "ImportPath": "github.com/google/certificate-transparency/go/client", - "Rev": "af98904302724c29aa6659ca372d41c9687de2b7" + "ImportPath": "github.com/google/certificate-transparency-go/client", + "Rev": "1bec4527572c443752ad4f2830bef88be0533236" }, { - "ImportPath": "github.com/google/certificate-transparency/go/x509", - "Rev": "af98904302724c29aa6659ca372d41c9687de2b7" + "ImportPath": "github.com/google/certificate-transparency-go/client/configpb", + "Rev": "1bec4527572c443752ad4f2830bef88be0533236" }, { - "ImportPath": "github.com/google/certificate-transparency/go/x509/pkix", - "Rev": "af98904302724c29aa6659ca372d41c9687de2b7" + "ImportPath": "github.com/google/certificate-transparency-go/jsonclient", + "Rev": "1bec4527572c443752ad4f2830bef88be0533236" + }, + { + "ImportPath": "github.com/google/certificate-transparency-go/tls", + "Rev": "1bec4527572c443752ad4f2830bef88be0533236" + }, + { + "ImportPath": "github.com/google/certificate-transparency-go/x509", + "Rev": "1bec4527572c443752ad4f2830bef88be0533236" + }, + { + "ImportPath": "github.com/google/certificate-transparency-go/x509/pkix", + "Rev": "1bec4527572c443752ad4f2830bef88be0533236" }, { "ImportPath": "github.com/google/gofuzz", @@ -1964,7 +1976,6 @@ }, { "ImportPath": "github.com/inconshreveable/mousetrap", - "Comment": "v1.0", "Rev": "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75" }, { @@ -2122,10 +2133,6 @@ "ImportPath": "github.com/mohae/deepcopy", "Rev": "491d3605edfb866af34a48075bd4355ac1bf46ca" }, - { - "ImportPath": "github.com/mreiferson/go-httpclient", - "Rev": "31f0106b4474f14bc441575c19d3a5fa21aa1f6c" - }, { "ImportPath": "github.com/mrunalp/fileutils", "Rev": "4ee1cc9a80582a0c75febdd5cfa779ee4361cbca" @@ -2449,7 +2456,6 @@ }, { "ImportPath": "github.com/pelletier/go-buffruneio", - "Comment": "v0.1.0", "Rev": "df1e16fde7fc330a0ca68167c23bf7ed6ac31d6d" }, { @@ -2799,7 +2805,6 @@ }, { "ImportPath": "github.com/xiang90/probing", - "Comment": "0.0.1", "Rev": "07dd2e8dfe18522e9c447ba95f2fe95262f63bb2" }, { @@ -2813,51 +2818,67 @@ }, { "ImportPath": "golang.org/x/crypto/bcrypt", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/blowfish", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" + }, + { + "ImportPath": "golang.org/x/crypto/cryptobyte", + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" + }, + { + "ImportPath": "golang.org/x/crypto/cryptobyte/asn1", + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/curve25519", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/ed25519", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/ed25519/internal/edwards25519", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" + }, + { + "ImportPath": "golang.org/x/crypto/internal/chacha20", + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/nacl/secretbox", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" + }, + { + "ImportPath": "golang.org/x/crypto/ocsp", + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/pkcs12", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/pkcs12/internal/rc2", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/poly1305", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/salsa20/salsa", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/ssh", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/ssh/terminal", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/exp/inotify", diff --git a/Godeps/LICENSES b/Godeps/LICENSES index a41c79856f5..b57935261ca 100644 --- a/Godeps/LICENSES +++ b/Godeps/LICENSES @@ -56118,7 +56118,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ================================================================================ -= vendor/github.com/google/certificate-transparency/go licensed under: = += vendor/github.com/google/certificate-transparency-go licensed under: = Apache License @@ -56323,12 +56323,12 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. See the License for the specific language governing permissions and limitations under the License. -= vendor/github.com/google/certificate-transparency/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 += vendor/github.com/google/certificate-transparency-go/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 ================================================================================ ================================================================================ -= vendor/github.com/google/certificate-transparency/go/asn1 licensed under: = += vendor/github.com/google/certificate-transparency-go/asn1 licensed under: = Apache License @@ -56533,12 +56533,12 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. See the License for the specific language governing permissions and limitations under the License. -= vendor/github.com/google/certificate-transparency/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 += vendor/github.com/google/certificate-transparency-go/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 ================================================================================ ================================================================================ -= vendor/github.com/google/certificate-transparency/go/client licensed under: = += vendor/github.com/google/certificate-transparency-go/client licensed under: = Apache License @@ -56743,12 +56743,12 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. See the License for the specific language governing permissions and limitations under the License. -= vendor/github.com/google/certificate-transparency/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 += vendor/github.com/google/certificate-transparency-go/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 ================================================================================ ================================================================================ -= vendor/github.com/google/certificate-transparency/go/x509 licensed under: = += vendor/github.com/google/certificate-transparency-go/client/configpb licensed under: = Apache License @@ -56953,12 +56953,12 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. See the License for the specific language governing permissions and limitations under the License. -= vendor/github.com/google/certificate-transparency/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 += vendor/github.com/google/certificate-transparency-go/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 ================================================================================ ================================================================================ -= vendor/github.com/google/certificate-transparency/go/x509/pkix licensed under: = += vendor/github.com/google/certificate-transparency-go/jsonclient licensed under: = Apache License @@ -57163,7 +57163,637 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. See the License for the specific language governing permissions and limitations under the License. -= vendor/github.com/google/certificate-transparency/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 += vendor/github.com/google/certificate-transparency-go/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 +================================================================================ + + +================================================================================ += vendor/github.com/google/certificate-transparency-go/tls licensed under: = + + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + += vendor/github.com/google/certificate-transparency-go/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 +================================================================================ + + +================================================================================ += vendor/github.com/google/certificate-transparency-go/x509/pkix licensed under: = + + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + + 2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + += vendor/github.com/google/certificate-transparency-go/LICENSE 3b83ef96387f14655fc854ddc3c6bd57 ================================================================================ @@ -72127,35 +72757,6 @@ SOFTWARE. ================================================================================ -================================================================================ -= vendor/github.com/mreiferson/go-httpclient licensed under: = - -The MIT License (MIT) - -Copyright (c) 2012 Matt Reiferson - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. - -= vendor/github.com/mreiferson/go-httpclient/LICENSE 443af26efefd8192911d22fb48b35824 -================================================================================ - - ================================================================================ = vendor/github.com/mrunalp/fileutils licensed under: = @@ -88299,6 +88900,76 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ================================================================================ +================================================================================ += vendor/golang.org/x/crypto/cryptobyte licensed under: = + +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + += vendor/golang.org/x/crypto/LICENSE 5d4950ecb7b26d2c5e4e7b4e0dd74707 +================================================================================ + + +================================================================================ += vendor/golang.org/x/crypto/cryptobyte/asn1 licensed under: = + +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + += vendor/golang.org/x/crypto/LICENSE 5d4950ecb7b26d2c5e4e7b4e0dd74707 +================================================================================ + + ================================================================================ = vendor/golang.org/x/crypto/curve25519 licensed under: = @@ -88404,6 +89075,41 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ================================================================================ +================================================================================ += vendor/golang.org/x/crypto/internal/chacha20 licensed under: = + +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + += vendor/golang.org/x/crypto/LICENSE 5d4950ecb7b26d2c5e4e7b4e0dd74707 +================================================================================ + + ================================================================================ = vendor/golang.org/x/crypto/nacl/secretbox licensed under: = @@ -88439,6 +89145,41 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ================================================================================ +================================================================================ += vendor/golang.org/x/crypto/ocsp licensed under: = + +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + += vendor/golang.org/x/crypto/LICENSE 5d4950ecb7b26d2c5e4e7b4e0dd74707 +================================================================================ + + ================================================================================ = vendor/golang.org/x/crypto/pkcs12 licensed under: = diff --git a/staging/src/k8s.io/apiextensions-apiserver/Godeps/Godeps.json b/staging/src/k8s.io/apiextensions-apiserver/Godeps/Godeps.json index 15f2b687603..810efc368ad 100644 --- a/staging/src/k8s.io/apiextensions-apiserver/Godeps/Godeps.json +++ b/staging/src/k8s.io/apiextensions-apiserver/Godeps/Godeps.json @@ -608,15 +608,15 @@ }, { "ImportPath": "golang.org/x/crypto/bcrypt", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/blowfish", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/ssh/terminal", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/net/context", diff --git a/staging/src/k8s.io/apiserver/Godeps/Godeps.json b/staging/src/k8s.io/apiserver/Godeps/Godeps.json index e2f71bfb0cd..5159a5b3181 100644 --- a/staging/src/k8s.io/apiserver/Godeps/Godeps.json +++ b/staging/src/k8s.io/apiserver/Godeps/Godeps.json @@ -584,35 +584,35 @@ }, { "ImportPath": "golang.org/x/crypto/bcrypt", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/blowfish", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/ed25519", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/ed25519/internal/edwards25519", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/nacl/secretbox", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/poly1305", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/salsa20/salsa", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/crypto/ssh/terminal", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/net/context", diff --git a/staging/src/k8s.io/client-go/Godeps/Godeps.json b/staging/src/k8s.io/client-go/Godeps/Godeps.json index 05862f0532e..45f3bdeb1bc 100644 --- a/staging/src/k8s.io/client-go/Godeps/Godeps.json +++ b/staging/src/k8s.io/client-go/Godeps/Godeps.json @@ -164,7 +164,7 @@ }, { "ImportPath": "golang.org/x/crypto/ssh/terminal", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/net/context", diff --git a/staging/src/k8s.io/kube-aggregator/Godeps/Godeps.json b/staging/src/k8s.io/kube-aggregator/Godeps/Godeps.json index 21433ccd64c..39104c3522d 100644 --- a/staging/src/k8s.io/kube-aggregator/Godeps/Godeps.json +++ b/staging/src/k8s.io/kube-aggregator/Godeps/Godeps.json @@ -284,7 +284,7 @@ }, { "ImportPath": "golang.org/x/crypto/ssh/terminal", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/net/context", diff --git a/staging/src/k8s.io/metrics/Godeps/Godeps.json b/staging/src/k8s.io/metrics/Godeps/Godeps.json index 355cf169360..076ef5777c5 100644 --- a/staging/src/k8s.io/metrics/Godeps/Godeps.json +++ b/staging/src/k8s.io/metrics/Godeps/Godeps.json @@ -68,7 +68,7 @@ }, { "ImportPath": "golang.org/x/crypto/ssh/terminal", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/net/context", diff --git a/staging/src/k8s.io/sample-apiserver/Godeps/Godeps.json b/staging/src/k8s.io/sample-apiserver/Godeps/Godeps.json index 1f723fb838c..cc11b727df9 100644 --- a/staging/src/k8s.io/sample-apiserver/Godeps/Godeps.json +++ b/staging/src/k8s.io/sample-apiserver/Godeps/Godeps.json @@ -264,7 +264,7 @@ }, { "ImportPath": "golang.org/x/crypto/ssh/terminal", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/net/context", diff --git a/staging/src/k8s.io/sample-controller/Godeps/Godeps.json b/staging/src/k8s.io/sample-controller/Godeps/Godeps.json index 7951b3bef89..5e9c790d02e 100644 --- a/staging/src/k8s.io/sample-controller/Godeps/Godeps.json +++ b/staging/src/k8s.io/sample-controller/Godeps/Godeps.json @@ -92,7 +92,7 @@ }, { "ImportPath": "golang.org/x/crypto/ssh/terminal", - "Rev": "81e90905daefcd6fd217b62423c0908922eadb30" + "Rev": "49796115aa4b964c318aad4f3084fdb41e9aa067" }, { "ImportPath": "golang.org/x/net/context", diff --git a/vendor/BUILD b/vendor/BUILD index 2e8936fb3a1..a2c666dc453 100644 --- a/vendor/BUILD +++ b/vendor/BUILD @@ -240,7 +240,7 @@ filegroup( "//vendor/github.com/google/cadvisor/validate:all-srcs", "//vendor/github.com/google/cadvisor/version:all-srcs", "//vendor/github.com/google/cadvisor/zfs:all-srcs", - "//vendor/github.com/google/certificate-transparency/go:all-srcs", + "//vendor/github.com/google/certificate-transparency-go:all-srcs", "//vendor/github.com/google/gofuzz:all-srcs", "//vendor/github.com/google/uuid:all-srcs", "//vendor/github.com/googleapis/gnostic/OpenAPIv2:all-srcs", @@ -293,7 +293,6 @@ filegroup( "//vendor/github.com/mitchellh/go-wordwrap:all-srcs", "//vendor/github.com/mitchellh/mapstructure:all-srcs", "//vendor/github.com/mohae/deepcopy:all-srcs", - "//vendor/github.com/mreiferson/go-httpclient:all-srcs", "//vendor/github.com/mrunalp/fileutils:all-srcs", "//vendor/github.com/mvdan/xurls:all-srcs", "//vendor/github.com/mxk/go-flowrate/flowrate:all-srcs", @@ -353,9 +352,12 @@ filegroup( "//vendor/go4.org/errorutil:all-srcs", "//vendor/golang.org/x/crypto/bcrypt:all-srcs", "//vendor/golang.org/x/crypto/blowfish:all-srcs", + "//vendor/golang.org/x/crypto/cryptobyte:all-srcs", "//vendor/golang.org/x/crypto/curve25519:all-srcs", "//vendor/golang.org/x/crypto/ed25519:all-srcs", + "//vendor/golang.org/x/crypto/internal/chacha20:all-srcs", "//vendor/golang.org/x/crypto/nacl/secretbox:all-srcs", + "//vendor/golang.org/x/crypto/ocsp:all-srcs", "//vendor/golang.org/x/crypto/pkcs12:all-srcs", "//vendor/golang.org/x/crypto/poly1305:all-srcs", "//vendor/golang.org/x/crypto/salsa20/salsa:all-srcs", diff --git a/vendor/github.com/cloudflare/cfssl/certdb/README.md b/vendor/github.com/cloudflare/cfssl/certdb/README.md index 18c6a280309..fbd941e39c4 100644 --- a/vendor/github.com/cloudflare/cfssl/certdb/README.md +++ b/vendor/github.com/cloudflare/cfssl/certdb/README.md @@ -16,21 +16,26 @@ A database is required for the following: This directory stores [goose](https://bitbucket.org/liamstask/goose/) db migration scripts for various DB backends. Currently supported: - - SQLite in sqlite + - MySQL in mysql - PostgreSQL in pg + - SQLite in sqlite ### Get goose - go get https://bitbucket.org/liamstask/goose/ + go get bitbucket.org/liamstask/goose/cmd/goose -### Use goose to start and terminate a SQLite DB -To start a SQLite DB using goose: +### Use goose to start and terminate a MySQL DB +To start a MySQL using goose: - goose -path $GOPATH/src/github.com/cloudflare/cfssl/certdb/sqlite up' + goose -path $GOPATH/src/github.com/cloudflare/cfssl/certdb/mysql up -To tear down a SQLite DB using goose +To tear down a MySQL DB using goose - goose -path $GOPATH/src/github.com/cloudflare/cfssl/certdb/sqlite down + goose -path $GOPATH/src/github.com/cloudflare/cfssl/certdb/mysql down + +Note: the administration of MySQL DB is not included. We assume +the databases being connected to are already created and access control +is properly handled. ### Use goose to start and terminate a PostgreSQL DB To start a PostgreSQL using goose: @@ -43,7 +48,16 @@ To tear down a PostgreSQL DB using goose Note: the administration of PostgreSQL DB is not included. We assume the databases being connected to are already created and access control -are properly handled. +is properly handled. + +### Use goose to start and terminate a SQLite DB +To start a SQLite DB using goose: + + goose -path $GOPATH/src/github.com/cloudflare/cfssl/certdb/sqlite up + +To tear down a SQLite DB using goose + + goose -path $GOPATH/src/github.com/cloudflare/cfssl/certdb/sqlite down ## CFSSL Configuration @@ -55,4 +69,7 @@ JSON dictionary: or {"driver":"postgres","data_source":"postgres://user:password@host/db"} + +or + {"driver":"mysql","data_source":"user:password@tcp(hostname:3306)/db?parseTime=true"} diff --git a/vendor/github.com/cloudflare/cfssl/certdb/certdb.go b/vendor/github.com/cloudflare/cfssl/certdb/certdb.go index 96694f76859..dc8c856c3b9 100644 --- a/vendor/github.com/cloudflare/cfssl/certdb/certdb.go +++ b/vendor/github.com/cloudflare/cfssl/certdb/certdb.go @@ -31,6 +31,8 @@ type Accessor interface { InsertCertificate(cr CertificateRecord) error GetCertificate(serial, aki string) ([]CertificateRecord, error) GetUnexpiredCertificates() ([]CertificateRecord, error) + GetRevokedAndUnexpiredCertificates() ([]CertificateRecord, error) + GetRevokedAndUnexpiredCertificatesByLabel(label string) ([]CertificateRecord, error) RevokeCertificate(serial, aki string, reasonCode int) error InsertOCSP(rr OCSPRecord) error GetOCSP(serial, aki string) ([]OCSPRecord, error) diff --git a/vendor/github.com/cloudflare/cfssl/config/config.go b/vendor/github.com/cloudflare/cfssl/config/config.go index a6837eb0db7..d5eb7c3760f 100644 --- a/vendor/github.com/cloudflare/cfssl/config/config.go +++ b/vendor/github.com/cloudflare/cfssl/config/config.go @@ -2,6 +2,7 @@ package config import ( + "crypto/tls" "crypto/x509" "encoding/asn1" "encoding/json" @@ -59,26 +60,35 @@ type AuthRemote struct { AuthKeyName string `json:"auth_key"` } +// CAConstraint specifies various CA constraints on the signed certificate. +// CAConstraint would verify against (and override) the CA +// extensions in the given CSR. +type CAConstraint struct { + IsCA bool `json:"is_ca"` + MaxPathLen int `json:"max_path_len"` + MaxPathLenZero bool `json:"max_path_len_zero"` +} + // A SigningProfile stores information that the CA needs to store // signature policy. type SigningProfile struct { - Usage []string `json:"usages"` - IssuerURL []string `json:"issuer_urls"` - OCSP string `json:"ocsp_url"` - CRL string `json:"crl_url"` - CA bool `json:"is_ca"` - OCSPNoCheck bool `json:"ocsp_no_check"` - ExpiryString string `json:"expiry"` - BackdateString string `json:"backdate"` - AuthKeyName string `json:"auth_key"` - RemoteName string `json:"remote"` - NotBefore time.Time `json:"not_before"` - NotAfter time.Time `json:"not_after"` - NameWhitelistString string `json:"name_whitelist"` - AuthRemote AuthRemote `json:"auth_remote"` - CTLogServers []string `json:"ct_log_servers"` - AllowedExtensions []OID `json:"allowed_extensions"` - CertStore string `json:"cert_store"` + Usage []string `json:"usages"` + IssuerURL []string `json:"issuer_urls"` + OCSP string `json:"ocsp_url"` + CRL string `json:"crl_url"` + CAConstraint CAConstraint `json:"ca_constraint"` + OCSPNoCheck bool `json:"ocsp_no_check"` + ExpiryString string `json:"expiry"` + BackdateString string `json:"backdate"` + AuthKeyName string `json:"auth_key"` + RemoteName string `json:"remote"` + NotBefore time.Time `json:"not_before"` + NotAfter time.Time `json:"not_after"` + NameWhitelistString string `json:"name_whitelist"` + AuthRemote AuthRemote `json:"auth_remote"` + CTLogServers []string `json:"ct_log_servers"` + AllowedExtensions []OID `json:"allowed_extensions"` + CertStore string `json:"cert_store"` Policies []CertificatePolicy Expiry time.Duration @@ -86,6 +96,8 @@ type SigningProfile struct { Provider auth.Provider RemoteProvider auth.Provider RemoteServer string + RemoteCAs *x509.CertPool + ClientCert *tls.Certificate CSRWhitelist *CSRWhitelist NameWhitelist *regexp.Regexp ExtensionWhitelist map[string]bool @@ -303,6 +315,44 @@ func (p *Signing) OverrideRemotes(remote string) error { return nil } +// SetClientCertKeyPairFromFile updates the properties to set client certificates for mutual +// authenticated TLS remote requests +func (p *Signing) SetClientCertKeyPairFromFile(certFile string, keyFile string) error { + if certFile != "" && keyFile != "" { + cert, err := helpers.LoadClientCertificate(certFile, keyFile) + if err != nil { + return err + } + for _, profile := range p.Profiles { + profile.ClientCert = cert + } + p.Default.ClientCert = cert + } + return nil +} + +// SetRemoteCAsFromFile reads root CAs from file and updates the properties to set remote CAs for TLS +// remote requests +func (p *Signing) SetRemoteCAsFromFile(caFile string) error { + if caFile != "" { + remoteCAs, err := helpers.LoadPEMCertPool(caFile) + if err != nil { + return err + } + p.SetRemoteCAs(remoteCAs) + } + return nil +} + +// SetRemoteCAs updates the properties to set remote CAs for TLS +// remote requests +func (p *Signing) SetRemoteCAs(remoteCAs *x509.CertPool) { + for _, profile := range p.Profiles { + profile.RemoteCAs = remoteCAs + } + p.Default.RemoteCAs = remoteCAs +} + // NeedsRemoteSigner returns true if one of the profiles has a remote set func (p *Signing) NeedsRemoteSigner() bool { for _, profile := range p.Profiles { @@ -360,6 +410,11 @@ func (p *SigningProfile) validProfile(isDefault bool) bool { return false } + if p.AuthRemote.RemoteName == "" && p.AuthRemote.AuthKeyName != "" { + log.Debugf("invalid auth remote profile: no remote signer specified") + return false + } + if p.RemoteName != "" { log.Debugf("validate remote profile") @@ -375,6 +430,7 @@ func (p *SigningProfile) validProfile(isDefault bool) bool { if p.AuthRemote.RemoteName != "" { log.Debugf("invalid remote profile: auth remote is also specified") + return false } } else if p.AuthRemote.RemoteName != "" { log.Debugf("validate auth remote profile") @@ -409,6 +465,43 @@ func (p *SigningProfile) validProfile(isDefault bool) bool { return true } +// This checks if the SigningProfile object contains configurations that are only effective with a local signer +// which has access to CA private key. +func (p *SigningProfile) hasLocalConfig() bool { + if p.Usage != nil || + p.IssuerURL != nil || + p.OCSP != "" || + p.ExpiryString != "" || + p.BackdateString != "" || + p.CAConstraint.IsCA != false || + !p.NotBefore.IsZero() || + !p.NotAfter.IsZero() || + p.NameWhitelistString != "" || + len(p.CTLogServers) != 0 { + return true + } + return false +} + +// warnSkippedSettings prints a log warning message about skipped settings +// in a SigningProfile, usually due to remote signer. +func (p *Signing) warnSkippedSettings() { + const warningMessage = `The configuration value by "usages", "issuer_urls", "ocsp_url", "crl_url", "ca_constraint", "expiry", "backdate", "not_before", "not_after", "cert_store" and "ct_log_servers" are skipped` + if p == nil { + return + } + + if (p.Default.RemoteName != "" || p.Default.AuthRemote.RemoteName != "") && p.Default.hasLocalConfig() { + log.Warning("default profile points to a remote signer: ", warningMessage) + } + + for name, profile := range p.Profiles { + if (profile.RemoteName != "" || profile.AuthRemote.RemoteName != "") && profile.hasLocalConfig() { + log.Warningf("Profiles[%s] points to a remote signer: %s", name, warningMessage) + } + } +} + // Signing codifies the signature configuration policy for a CA. type Signing struct { Profiles map[string]*SigningProfile `json:"profiles"` @@ -450,6 +543,9 @@ func (p *Signing) Valid() bool { return false } } + + p.warnSkippedSettings() + return true } diff --git a/vendor/github.com/cloudflare/cfssl/crypto/pkcs7/pkcs7.go b/vendor/github.com/cloudflare/cfssl/crypto/pkcs7/pkcs7.go index 8db547fce59..d57daf51b5e 100644 --- a/vendor/github.com/cloudflare/cfssl/crypto/pkcs7/pkcs7.go +++ b/vendor/github.com/cloudflare/cfssl/crypto/pkcs7/pkcs7.go @@ -1,7 +1,7 @@ // Package pkcs7 implements the subset of the CMS PKCS #7 datatype that is typically // used to package certificates and CRLs. Using openssl, every certificate converted // to PKCS #7 format from another encoding such as PEM conforms to this implementation. -// reference: https://www.openssl.org/docs/apps/crl2pkcs7.html +// reference: https://www.openssl.org/docs/man1.1.0/apps/crl2pkcs7.html // // PKCS #7 Data type, reference: https://tools.ietf.org/html/rfc2315 // diff --git a/vendor/github.com/cloudflare/cfssl/csr/csr.go b/vendor/github.com/cloudflare/cfssl/csr/csr.go index 6e3653fba64..c4ccea60b09 100644 --- a/vendor/github.com/cloudflare/cfssl/csr/csr.go +++ b/vendor/github.com/cloudflare/cfssl/csr/csr.go @@ -9,6 +9,7 @@ import ( "crypto/rsa" "crypto/x509" "crypto/x509/pkix" + "encoding/asn1" "encoding/pem" "errors" "net" @@ -46,8 +47,8 @@ type KeyRequest interface { // A BasicKeyRequest contains the algorithm and key size for a new private key. type BasicKeyRequest struct { - A string `json:"algo"` - S int `json:"size"` + A string `json:"algo" yaml:"algo"` + S int `json:"size" yaml:"size"` } // NewBasicKeyRequest returns a default BasicKeyRequest. @@ -129,19 +130,21 @@ func (kr *BasicKeyRequest) SigAlgo() x509.SignatureAlgorithm { // CAConfig is a section used in the requests initialising a new CA. type CAConfig struct { - PathLength int `json:"pathlen"` - Expiry string `json:"expiry"` + PathLength int `json:"pathlen" yaml:"pathlen"` + PathLenZero bool `json:"pathlenzero" yaml:"pathlenzero"` + Expiry string `json:"expiry" yaml:"expiry"` + Backdate string `json:"backdate" yaml:"backdate"` } // A CertificateRequest encapsulates the API interface to the // certificate request functionality. type CertificateRequest struct { CN string - Names []Name `json:"names"` - Hosts []string `json:"hosts"` - KeyRequest KeyRequest `json:"key,omitempty"` - CA *CAConfig `json:"ca,omitempty"` - SerialNumber string `json:"serialnumber,omitempty"` + Names []Name `json:"names" yaml:"names"` + Hosts []string `json:"hosts" yaml:"hosts"` + KeyRequest KeyRequest `json:"key,omitempty" yaml:"key,omitempty"` + CA *CAConfig `json:"ca,omitempty" yaml:"ca,omitempty"` + SerialNumber string `json:"serialnumber,omitempty" yaml:"serialnumber,omitempty"` } // New returns a new, empty CertificateRequest with a @@ -175,6 +178,12 @@ func (cr *CertificateRequest) Name() pkix.Name { return name } +// BasicConstraints CSR information RFC 5280, 4.2.1.9 +type BasicConstraints struct { + IsCA bool `asn1:"optional"` + MaxPathLen int `asn1:"optional,default:-1"` +} + // ParseRequest takes a certificate request and generates a key and // CSR from it. It does no validation -- caveat emptor. It will, // however, fail if the key request is not valid (i.e., an unsupported @@ -217,34 +226,11 @@ func ParseRequest(req *CertificateRequest) (csr, key []byte, err error) { panic("Generate should have failed to produce a valid key.") } - var tpl = x509.CertificateRequest{ - Subject: req.Name(), - SignatureAlgorithm: req.KeyRequest.SigAlgo(), - } - - for i := range req.Hosts { - if ip := net.ParseIP(req.Hosts[i]); ip != nil { - tpl.IPAddresses = append(tpl.IPAddresses, ip) - } else if email, err := mail.ParseAddress(req.Hosts[i]); err == nil && email != nil { - tpl.EmailAddresses = append(tpl.EmailAddresses, req.Hosts[i]) - } else { - tpl.DNSNames = append(tpl.DNSNames, req.Hosts[i]) - } - } - - csr, err = x509.CreateCertificateRequest(rand.Reader, &tpl, priv) + csr, err = Generate(priv.(crypto.Signer), req) if err != nil { log.Errorf("failed to generate a CSR: %v", err) err = cferr.Wrap(cferr.CSRError, cferr.BadRequest, err) - return } - block := pem.Block{ - Type: "CERTIFICATE REQUEST", - Bytes: csr, - } - - log.Info("encoded CSR") - csr = pem.EncodeToMemory(&block) return } @@ -265,6 +251,7 @@ func ExtractCertificateRequest(cert *x509.Certificate) *CertificateRequest { // issue date and expiry date. req.CA.Expiry = cert.NotAfter.Sub(cert.NotBefore).String() req.CA.PathLength = cert.MaxPathLen + req.CA.PathLenZero = cert.MaxPathLenZero } return req @@ -341,7 +328,7 @@ func (g *Generator) ProcessRequest(req *CertificateRequest) (csr, key []byte, er err = g.Validator(req) if err != nil { log.Warningf("invalid request: %v", err) - return + return nil, nil, err } csr, key, err = ParseRequest(req) @@ -377,7 +364,7 @@ func Regenerate(priv crypto.Signer, csr []byte) ([]byte, error) { // Generate creates a new CSR from a CertificateRequest structure and // an existing key. The KeyRequest field is ignored. func Generate(priv crypto.Signer, req *CertificateRequest) (csr []byte, err error) { - sigAlgo := helpers.SignerAlgo(priv, crypto.SHA256) + sigAlgo := helpers.SignerAlgo(priv) if sigAlgo == x509.UnknownSignatureAlgorithm { return nil, cferr.New(cferr.PrivateKeyError, cferr.Unavailable) } @@ -397,6 +384,14 @@ func Generate(priv crypto.Signer, req *CertificateRequest) (csr []byte, err erro } } + if req.CA != nil { + err = appendCAInfoToCSR(req.CA, &tpl) + if err != nil { + err = cferr.Wrap(cferr.CSRError, cferr.GenerationFailed, err) + return + } + } + csr, err = x509.CreateCertificateRequest(rand.Reader, &tpl, priv) if err != nil { log.Errorf("failed to generate a CSR: %v", err) @@ -412,3 +407,26 @@ func Generate(priv crypto.Signer, req *CertificateRequest) (csr []byte, err erro csr = pem.EncodeToMemory(&block) return } + +// appendCAInfoToCSR appends CAConfig BasicConstraint extension to a CSR +func appendCAInfoToCSR(reqConf *CAConfig, csr *x509.CertificateRequest) error { + pathlen := reqConf.PathLength + if pathlen == 0 && !reqConf.PathLenZero { + pathlen = -1 + } + val, err := asn1.Marshal(BasicConstraints{true, pathlen}) + + if err != nil { + return err + } + + csr.ExtraExtensions = []pkix.Extension{ + { + Id: asn1.ObjectIdentifier{2, 5, 29, 19}, + Value: val, + Critical: true, + }, + } + + return nil +} diff --git a/vendor/github.com/cloudflare/cfssl/errors/error.go b/vendor/github.com/cloudflare/cfssl/errors/error.go index 88663b2c67e..607223765eb 100644 --- a/vendor/github.com/cloudflare/cfssl/errors/error.go +++ b/vendor/github.com/cloudflare/cfssl/errors/error.go @@ -149,6 +149,8 @@ const ( // UnknownProfile indicates that the profile does not exist. UnknownProfile // 54XX + + UnmatchedWhitelist // 55xx ) // The following are API client related errors, and should be @@ -189,6 +191,9 @@ const ( // PrecertSubmissionFailed occurs when submitting a precertificate to // a log server fails PrecertSubmissionFailed = 100 * (iota + 1) + // CTClientConstructionFailed occurs when the construction of a new + // github.com/google/certificate-transparency client fails. + CTClientConstructionFailed ) // Certificate persistence related errors specified with CertStoreError @@ -313,6 +318,8 @@ func New(category Category, reason Reason) *Error { msg = "Policy violation request" case UnknownProfile: msg = "Unknown policy profile" + case UnmatchedWhitelist: + msg = "Request does not match policy whitelist" default: panic(fmt.Sprintf("Unsupported CFSSL error reason %d under category PolicyError.", reason)) diff --git a/vendor/github.com/cloudflare/cfssl/helpers/BUILD b/vendor/github.com/cloudflare/cfssl/helpers/BUILD index 8ff1844e65d..5cc6675814a 100644 --- a/vendor/github.com/cloudflare/cfssl/helpers/BUILD +++ b/vendor/github.com/cloudflare/cfssl/helpers/BUILD @@ -10,6 +10,9 @@ go_library( "//vendor/github.com/cloudflare/cfssl/errors:go_default_library", "//vendor/github.com/cloudflare/cfssl/helpers/derhelpers:go_default_library", "//vendor/github.com/cloudflare/cfssl/log:go_default_library", + "//vendor/github.com/google/certificate-transparency-go:go_default_library", + "//vendor/github.com/google/certificate-transparency-go/tls:go_default_library", + "//vendor/golang.org/x/crypto/ocsp:go_default_library", "//vendor/golang.org/x/crypto/pkcs12:go_default_library", ], ) diff --git a/vendor/github.com/cloudflare/cfssl/helpers/helpers.go b/vendor/github.com/cloudflare/cfssl/helpers/helpers.go index 74d768134ac..c9506077a44 100644 --- a/vendor/github.com/cloudflare/cfssl/helpers/helpers.go +++ b/vendor/github.com/cloudflare/cfssl/helpers/helpers.go @@ -6,13 +6,23 @@ import ( "bytes" "crypto" "crypto/ecdsa" + "crypto/elliptic" "crypto/rsa" + "crypto/tls" "crypto/x509" + "crypto/x509/pkix" "encoding/asn1" + "encoding/binary" "encoding/pem" "errors" + "fmt" + "io" "io/ioutil" - "math/big" + "os" + + "github.com/google/certificate-transparency-go" + cttls "github.com/google/certificate-transparency-go/tls" + "golang.org/x/crypto/ocsp" "strings" "time" @@ -310,11 +320,23 @@ func ParseOneCertificateFromPEM(certsPEM []byte) ([]*x509.Certificate, []byte, e // LoadPEMCertPool loads a pool of PEM certificates from file. func LoadPEMCertPool(certsFile string) (*x509.CertPool, error) { + if certsFile == "" { + return nil, nil + } pemCerts, err := ioutil.ReadFile(certsFile) if err != nil { return nil, err } + return PEMToCertPool(pemCerts) +} + +// PEMToCertPool concerts PEM certificates to a CertPool. +func PEMToCertPool(pemCerts []byte) (*x509.CertPool, error) { + if len(pemCerts) == 0 { + return nil, nil + } + certPool := x509.NewCertPool() if !certPool.AppendCertsFromPEM(pemCerts) { return nil, errors.New("failed to load cert pool") @@ -360,57 +382,12 @@ func GetKeyDERFromPEM(in []byte, password []byte) ([]byte, error) { return nil, cferr.New(cferr.PrivateKeyError, cferr.DecodeFailed) } -// CheckSignature verifies a signature made by the key on a CSR, such -// as on the CSR itself. -func CheckSignature(csr *x509.CertificateRequest, algo x509.SignatureAlgorithm, signed, signature []byte) error { - var hashType crypto.Hash - - switch algo { - case x509.SHA1WithRSA, x509.ECDSAWithSHA1: - hashType = crypto.SHA1 - case x509.SHA256WithRSA, x509.ECDSAWithSHA256: - hashType = crypto.SHA256 - case x509.SHA384WithRSA, x509.ECDSAWithSHA384: - hashType = crypto.SHA384 - case x509.SHA512WithRSA, x509.ECDSAWithSHA512: - hashType = crypto.SHA512 - default: - return x509.ErrUnsupportedAlgorithm - } - - if !hashType.Available() { - return x509.ErrUnsupportedAlgorithm - } - h := hashType.New() - - h.Write(signed) - digest := h.Sum(nil) - - switch pub := csr.PublicKey.(type) { - case *rsa.PublicKey: - return rsa.VerifyPKCS1v15(pub, hashType, digest, signature) - case *ecdsa.PublicKey: - ecdsaSig := new(struct{ R, S *big.Int }) - if _, err := asn1.Unmarshal(signature, ecdsaSig); err != nil { - return err - } - if ecdsaSig.R.Sign() <= 0 || ecdsaSig.S.Sign() <= 0 { - return errors.New("x509: ECDSA signature contained zero or negative values") - } - if !ecdsa.Verify(pub, digest, ecdsaSig.R, ecdsaSig.S) { - return errors.New("x509: ECDSA verification failure") - } - return nil - } - return x509.ErrUnsupportedAlgorithm -} - // ParseCSR parses a PEM- or DER-encoded PKCS #10 certificate signing request. func ParseCSR(in []byte) (csr *x509.CertificateRequest, rest []byte, err error) { in = bytes.TrimSpace(in) p, rest := pem.Decode(in) if p != nil { - if p.Type != "CERTIFICATE REQUEST" { + if p.Type != "NEW CERTIFICATE REQUEST" && p.Type != "CERTIFICATE REQUEST" { return nil, rest, cferr.New(cferr.CSRError, cferr.BadRequest) } @@ -423,7 +400,7 @@ func ParseCSR(in []byte) (csr *x509.CertificateRequest, rest []byte, err error) return nil, rest, err } - err = CheckSignature(csr, csr.SignatureAlgorithm, csr.RawTBSCertificateRequest, csr.Signature) + err = csr.CheckSignature() if err != nil { return nil, rest, err } @@ -436,8 +413,10 @@ func ParseCSR(in []byte) (csr *x509.CertificateRequest, rest []byte, err error) // locally. func ParseCSRPEM(csrPEM []byte) (*x509.CertificateRequest, error) { block, _ := pem.Decode([]byte(csrPEM)) - der := block.Bytes - csrObject, err := x509.ParseCertificateRequest(der) + if block == nil { + return nil, cferr.New(cferr.CSRError, cferr.DecodeFailed) + } + csrObject, err := x509.ParseCertificateRequest(block.Bytes) if err != nil { return nil, err @@ -446,28 +425,28 @@ func ParseCSRPEM(csrPEM []byte) (*x509.CertificateRequest, error) { return csrObject, nil } -// SignerAlgo returns an X.509 signature algorithm corresponding to -// the crypto.Hash provided from a crypto.Signer. -func SignerAlgo(priv crypto.Signer, h crypto.Hash) x509.SignatureAlgorithm { - switch priv.Public().(type) { +// SignerAlgo returns an X.509 signature algorithm from a crypto.Signer. +func SignerAlgo(priv crypto.Signer) x509.SignatureAlgorithm { + switch pub := priv.Public().(type) { case *rsa.PublicKey: - switch h { - case crypto.SHA512: + bitLength := pub.N.BitLen() + switch { + case bitLength >= 4096: return x509.SHA512WithRSA - case crypto.SHA384: + case bitLength >= 3072: return x509.SHA384WithRSA - case crypto.SHA256: + case bitLength >= 2048: return x509.SHA256WithRSA default: return x509.SHA1WithRSA } case *ecdsa.PublicKey: - switch h { - case crypto.SHA512: + switch pub.Curve { + case elliptic.P521(): return x509.ECDSAWithSHA512 - case crypto.SHA384: + case elliptic.P384(): return x509.ECDSAWithSHA384 - case crypto.SHA256: + case elliptic.P256(): return x509.ECDSAWithSHA256 default: return x509.ECDSAWithSHA1 @@ -476,3 +455,149 @@ func SignerAlgo(priv crypto.Signer, h crypto.Hash) x509.SignatureAlgorithm { return x509.UnknownSignatureAlgorithm } } + +// LoadClientCertificate load key/certificate from pem files +func LoadClientCertificate(certFile string, keyFile string) (*tls.Certificate, error) { + if certFile != "" && keyFile != "" { + cert, err := tls.LoadX509KeyPair(certFile, keyFile) + if err != nil { + log.Critical("Unable to read client certificate from file: %s or key from file: %s", certFile, keyFile) + return nil, err + } + log.Debug("Client certificate loaded ") + return &cert, nil + } + return nil, nil +} + +// CreateTLSConfig creates a tls.Config object from certs and roots +func CreateTLSConfig(remoteCAs *x509.CertPool, cert *tls.Certificate) *tls.Config { + var certs []tls.Certificate + if cert != nil { + certs = []tls.Certificate{*cert} + } + return &tls.Config{ + Certificates: certs, + RootCAs: remoteCAs, + } +} + +// SerializeSCTList serializes a list of SCTs. +func SerializeSCTList(sctList []ct.SignedCertificateTimestamp) ([]byte, error) { + var buf bytes.Buffer + for _, sct := range sctList { + sct, err := cttls.Marshal(sct) + if err != nil { + return nil, err + } + binary.Write(&buf, binary.BigEndian, uint16(len(sct))) + buf.Write(sct) + } + + var sctListLengthField = make([]byte, 2) + binary.BigEndian.PutUint16(sctListLengthField, uint16(buf.Len())) + return bytes.Join([][]byte{sctListLengthField, buf.Bytes()}, nil), nil +} + +// DeserializeSCTList deserializes a list of SCTs. +func DeserializeSCTList(serializedSCTList []byte) (*[]ct.SignedCertificateTimestamp, error) { + sctList := new([]ct.SignedCertificateTimestamp) + sctReader := bytes.NewBuffer(serializedSCTList) + + var sctListLen uint16 + err := binary.Read(sctReader, binary.BigEndian, &sctListLen) + if err != nil { + if err == io.EOF { + return sctList, cferr.Wrap(cferr.CTError, cferr.Unknown, + errors.New("serialized SCT list could not be read")) + } + return sctList, cferr.Wrap(cferr.CTError, cferr.Unknown, err) + } + if sctReader.Len() != int(sctListLen) { + return sctList, errors.New("SCT length field and SCT length don't match") + } + + for err != io.EOF { + var sctLen uint16 + err = binary.Read(sctReader, binary.BigEndian, &sctLen) + if err != nil { + if err == io.EOF { + return sctList, nil + } + return sctList, cferr.Wrap(cferr.CTError, cferr.Unknown, err) + } + + if sctReader.Len() < int(sctLen) { + return sctList, errors.New("SCT length field and SCT length don't match") + } + + serializedSCT := sctReader.Next(int(sctLen)) + var sct ct.SignedCertificateTimestamp + if _, err := cttls.Unmarshal(serializedSCT, &sct); err != nil { + return sctList, cferr.Wrap(cferr.CTError, cferr.Unknown, err) + } + + temp := append(*sctList, sct) + sctList = &temp + } + + return sctList, cferr.Wrap(cferr.CTError, cferr.Unknown, err) +} + +// SCTListFromOCSPResponse extracts the SCTList from an ocsp.Response, +// returning an empty list if the SCT extension was not found or could not be +// unmarshalled. +func SCTListFromOCSPResponse(response *ocsp.Response) ([]ct.SignedCertificateTimestamp, error) { + // This loop finds the SCTListExtension in the OCSP response. + var SCTListExtension, ext pkix.Extension + for _, ext = range response.Extensions { + // sctExtOid is the ObjectIdentifier of a Signed Certificate Timestamp. + sctExtOid := asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 11129, 2, 4, 5} + if ext.Id.Equal(sctExtOid) { + SCTListExtension = ext + break + } + } + + // This code block extracts the sctList from the SCT extension. + var emptySCTList []ct.SignedCertificateTimestamp + sctList := &emptySCTList + var err error + if numBytes := len(SCTListExtension.Value); numBytes != 0 { + serializedSCTList := new([]byte) + rest := make([]byte, numBytes) + copy(rest, SCTListExtension.Value) + for len(rest) != 0 { + rest, err = asn1.Unmarshal(rest, serializedSCTList) + if err != nil { + return nil, cferr.Wrap(cferr.CTError, cferr.Unknown, err) + } + } + sctList, err = DeserializeSCTList(*serializedSCTList) + } + return *sctList, err +} + +// ReadBytes reads a []byte either from a file or an environment variable. +// If valFile has a prefix of 'env:', the []byte is read from the environment +// using the subsequent name. If the prefix is 'file:' the []byte is read from +// the subsequent file. If no prefix is provided, valFile is assumed to be a +// file path. +func ReadBytes(valFile string) ([]byte, error) { + switch splitVal := strings.SplitN(valFile, ":", 2); len(splitVal) { + case 1: + return ioutil.ReadFile(valFile) + case 2: + switch splitVal[0] { + case "env": + return []byte(os.Getenv(splitVal[1])), nil + case "file": + return ioutil.ReadFile(splitVal[1]) + default: + return nil, fmt.Errorf("unknown prefix: %s", splitVal[0]) + } + default: + return nil, fmt.Errorf("multiple prefixes: %s", + strings.Join(splitVal[:len(splitVal)-1], ", ")) + } +} diff --git a/vendor/github.com/cloudflare/cfssl/log/log.go b/vendor/github.com/cloudflare/cfssl/log/log.go index b517c44eea4..956c9d4604a 100644 --- a/vendor/github.com/cloudflare/cfssl/log/log.go +++ b/vendor/github.com/cloudflare/cfssl/log/log.go @@ -6,7 +6,6 @@ package log import ( - "flag" "fmt" "log" "os" @@ -45,12 +44,12 @@ var Level = LevelInfo // // SyslogWriter is satisfied by *syslog.Writer. type SyslogWriter interface { - Debug(string) error - Info(string) error - Warning(string) error - Err(string) error - Crit(string) error - Emerg(string) error + Debug(string) + Info(string) + Warning(string) + Err(string) + Crit(string) + Emerg(string) } // syslogWriter stores the SetLogger() parameter. @@ -63,33 +62,22 @@ func SetLogger(logger SyslogWriter) { syslogWriter = logger } -func init() { - // Only define loglevel flag once. - if flag.Lookup("loglevel") == nil { - flag.IntVar(&Level, "loglevel", LevelInfo, "Log level (0 = DEBUG, 5 = FATAL)") - } -} - func print(l int, msg string) { if l >= Level { if syslogWriter != nil { - var err error switch l { case LevelDebug: - err = syslogWriter.Debug(msg) + syslogWriter.Debug(msg) case LevelInfo: - err = syslogWriter.Info(msg) + syslogWriter.Info(msg) case LevelWarning: - err = syslogWriter.Warning(msg) + syslogWriter.Warning(msg) case LevelError: - err = syslogWriter.Err(msg) + syslogWriter.Err(msg) case LevelCritical: - err = syslogWriter.Crit(msg) + syslogWriter.Crit(msg) case LevelFatal: - err = syslogWriter.Emerg(msg) - } - if err != nil { - log.Printf("Unable to write syslog: %v for msg: %s\n", err, msg) + syslogWriter.Emerg(msg) } } else { log.Printf("[%s] %s", levelPrefix[l], msg) diff --git a/vendor/github.com/cloudflare/cfssl/signer/BUILD b/vendor/github.com/cloudflare/cfssl/signer/BUILD index f63dbba7293..d703923c2de 100644 --- a/vendor/github.com/cloudflare/cfssl/signer/BUILD +++ b/vendor/github.com/cloudflare/cfssl/signer/BUILD @@ -10,7 +10,6 @@ go_library( "//vendor/github.com/cloudflare/cfssl/config:go_default_library", "//vendor/github.com/cloudflare/cfssl/csr:go_default_library", "//vendor/github.com/cloudflare/cfssl/errors:go_default_library", - "//vendor/github.com/cloudflare/cfssl/helpers:go_default_library", "//vendor/github.com/cloudflare/cfssl/info:go_default_library", ], ) diff --git a/vendor/github.com/cloudflare/cfssl/signer/local/BUILD b/vendor/github.com/cloudflare/cfssl/signer/local/BUILD index 2f54fe0838f..b7cb17f6518 100644 --- a/vendor/github.com/cloudflare/cfssl/signer/local/BUILD +++ b/vendor/github.com/cloudflare/cfssl/signer/local/BUILD @@ -13,8 +13,10 @@ go_library( "//vendor/github.com/cloudflare/cfssl/info:go_default_library", "//vendor/github.com/cloudflare/cfssl/log:go_default_library", "//vendor/github.com/cloudflare/cfssl/signer:go_default_library", - "//vendor/github.com/google/certificate-transparency/go:go_default_library", - "//vendor/github.com/google/certificate-transparency/go/client:go_default_library", + "//vendor/github.com/google/certificate-transparency-go:go_default_library", + "//vendor/github.com/google/certificate-transparency-go/client:go_default_library", + "//vendor/github.com/google/certificate-transparency-go/jsonclient:go_default_library", + "//vendor/golang.org/x/net/context:go_default_library", ], ) diff --git a/vendor/github.com/cloudflare/cfssl/signer/local/local.go b/vendor/github.com/cloudflare/cfssl/signer/local/local.go index ac16ae4a9e6..67701af7b6e 100644 --- a/vendor/github.com/cloudflare/cfssl/signer/local/local.go +++ b/vendor/github.com/cloudflare/cfssl/signer/local/local.go @@ -8,14 +8,13 @@ import ( "crypto/x509" "crypto/x509/pkix" "encoding/asn1" - "encoding/binary" "encoding/hex" "encoding/pem" "errors" "io" - "io/ioutil" "math/big" "net" + "net/http" "net/mail" "os" @@ -26,8 +25,10 @@ import ( "github.com/cloudflare/cfssl/info" "github.com/cloudflare/cfssl/log" "github.com/cloudflare/cfssl/signer" - "github.com/google/certificate-transparency/go" - "github.com/google/certificate-transparency/go/client" + "github.com/google/certificate-transparency-go" + "github.com/google/certificate-transparency-go/client" + "github.com/google/certificate-transparency-go/jsonclient" + "golang.org/x/net/context" ) // Signer contains a signer that uses the standard library to @@ -65,12 +66,12 @@ func NewSigner(priv crypto.Signer, cert *x509.Certificate, sigAlgo x509.Signatur // and a caKey file, both PEM encoded. func NewSignerFromFile(caFile, caKeyFile string, policy *config.Signing) (*Signer, error) { log.Debug("Loading CA: ", caFile) - ca, err := ioutil.ReadFile(caFile) + ca, err := helpers.ReadBytes(caFile) if err != nil { return nil, err } log.Debug("Loading CA key: ", caKeyFile) - cakey, err := ioutil.ReadFile(caKeyFile) + cakey, err := helpers.ReadBytes(caKeyFile) if err != nil { return nil, cferr.Wrap(cferr.CertificateError, cferr.ReadFailed, err) } @@ -95,12 +96,7 @@ func NewSignerFromFile(caFile, caKeyFile string, policy *config.Signing) (*Signe return NewSigner(priv, parsedCa, signer.DefaultSigAlgo(priv), policy) } -func (s *Signer) sign(template *x509.Certificate, profile *config.SigningProfile) (cert []byte, err error) { - err = signer.FillTemplate(template, s.policy.Default, profile) - if err != nil { - return - } - +func (s *Signer) sign(template *x509.Certificate) (cert []byte, err error) { var initRoot bool if s.ca == nil { if !template.IsCA { @@ -111,11 +107,6 @@ func (s *Signer) sign(template *x509.Certificate, profile *config.SigningProfile template.EmailAddresses = nil s.ca = template initRoot = true - template.MaxPathLen = signer.MaxPathLen - } else if template.IsCA { - template.MaxPathLen = 1 - template.DNSNames = nil - template.EmailAddresses = nil } derBytes, err := x509.CreateCertificate(rand.Reader, template, s.ca, template.PublicKey, s.priv) @@ -203,9 +194,9 @@ func (s *Signer) Sign(req signer.SignRequest) (cert []byte, err error) { return nil, cferr.New(cferr.CSRError, cferr.DecodeFailed) } - if block.Type != "CERTIFICATE REQUEST" { + if block.Type != "NEW CERTIFICATE REQUEST" && block.Type != "CERTIFICATE REQUEST" { return nil, cferr.Wrap(cferr.CSRError, - cferr.BadRequest, errors.New("not a certificate or csr")) + cferr.BadRequest, errors.New("not a csr")) } csrTemplate, err := signer.ParseCertificateRequest(s, block.Bytes) @@ -243,6 +234,29 @@ func (s *Signer) Sign(req signer.SignRequest) (cert []byte, err error) { } } + if req.CRLOverride != "" { + safeTemplate.CRLDistributionPoints = []string{req.CRLOverride} + } + + if safeTemplate.IsCA { + if !profile.CAConstraint.IsCA { + log.Error("local signer policy disallows issuing CA certificate") + return nil, cferr.New(cferr.PolicyError, cferr.InvalidRequest) + } + + if s.ca != nil && s.ca.MaxPathLen > 0 { + if safeTemplate.MaxPathLen >= s.ca.MaxPathLen { + log.Error("local signer certificate disallows CA MaxPathLen extending") + // do not sign a cert with pathlen > current + return nil, cferr.New(cferr.PolicyError, cferr.InvalidRequest) + } + } else if s.ca != nil && s.ca.MaxPathLen == 0 && s.ca.MaxPathLenZero { + log.Error("local signer certificate disallows issuing CA certificate") + // signer has pathlen of 0, do not sign more intermediate CAs + return nil, cferr.New(cferr.PolicyError, cferr.InvalidRequest) + } + } + OverrideHosts(&safeTemplate, req.Hosts) safeTemplate.Subject = PopulateSubjectFromCSR(req.Subject, safeTemplate.Subject) @@ -250,17 +264,17 @@ func (s *Signer) Sign(req signer.SignRequest) (cert []byte, err error) { if profile.NameWhitelist != nil { if safeTemplate.Subject.CommonName != "" { if profile.NameWhitelist.Find([]byte(safeTemplate.Subject.CommonName)) == nil { - return nil, cferr.New(cferr.PolicyError, cferr.InvalidPolicy) + return nil, cferr.New(cferr.PolicyError, cferr.UnmatchedWhitelist) } } for _, name := range safeTemplate.DNSNames { if profile.NameWhitelist.Find([]byte(name)) == nil { - return nil, cferr.New(cferr.PolicyError, cferr.InvalidPolicy) + return nil, cferr.New(cferr.PolicyError, cferr.UnmatchedWhitelist) } } for _, name := range safeTemplate.EmailAddresses { if profile.NameWhitelist.Find([]byte(name)) == nil { - return nil, cferr.New(cferr.PolicyError, cferr.InvalidPolicy) + return nil, cferr.New(cferr.PolicyError, cferr.UnmatchedWhitelist) } } } @@ -312,6 +326,15 @@ func (s *Signer) Sign(req signer.SignRequest) (cert []byte, err error) { } } + var distPoints = safeTemplate.CRLDistributionPoints + err = signer.FillTemplate(&safeTemplate, s.policy.Default, profile, req.NotBefore, req.NotAfter) + if err != nil { + return nil, err + } + if distPoints != nil && len(distPoints) > 0 { + safeTemplate.CRLDistributionPoints = distPoints + } + var certTBS = safeTemplate if len(profile.CTLogServers) > 0 { @@ -319,20 +342,24 @@ func (s *Signer) Sign(req signer.SignRequest) (cert []byte, err error) { var poisonExtension = pkix.Extension{Id: signer.CTPoisonOID, Critical: true, Value: []byte{0x05, 0x00}} var poisonedPreCert = certTBS poisonedPreCert.ExtraExtensions = append(safeTemplate.ExtraExtensions, poisonExtension) - cert, err = s.sign(&poisonedPreCert, profile) + cert, err = s.sign(&poisonedPreCert) if err != nil { return } derCert, _ := pem.Decode(cert) - prechain := []ct.ASN1Cert{derCert.Bytes, s.ca.Raw} + prechain := []ct.ASN1Cert{{Data: derCert.Bytes}, {Data: s.ca.Raw}} var sctList []ct.SignedCertificateTimestamp for _, server := range profile.CTLogServers { log.Infof("submitting poisoned precertificate to %s", server) - var ctclient = client.New(server) + ctclient, err := client.New(server, nil, jsonclient.Options{}) + if err != nil { + return nil, cferr.Wrap(cferr.CTError, cferr.PrecertSubmissionFailed, err) + } var resp *ct.SignedCertificateTimestamp - resp, err = ctclient.AddPreChain(prechain) + ctx := context.Background() + resp, err = ctclient.AddPreChain(ctx, prechain) if err != nil { return nil, cferr.Wrap(cferr.CTError, cferr.PrecertSubmissionFailed, err) } @@ -340,7 +367,7 @@ func (s *Signer) Sign(req signer.SignRequest) (cert []byte, err error) { } var serializedSCTList []byte - serializedSCTList, err = serializeSCTList(sctList) + serializedSCTList, err = helpers.SerializeSCTList(sctList) if err != nil { return nil, cferr.Wrap(cferr.CTError, cferr.Unknown, err) } @@ -355,17 +382,22 @@ func (s *Signer) Sign(req signer.SignRequest) (cert []byte, err error) { certTBS.ExtraExtensions = append(certTBS.ExtraExtensions, SCTListExtension) } var signedCert []byte - signedCert, err = s.sign(&certTBS, profile) + signedCert, err = s.sign(&certTBS) if err != nil { return nil, err } + // Get the AKI from signedCert. This is required to support Go 1.9+. + // In prior versions of Go, x509.CreateCertificate updated the + // AuthorityKeyId of certTBS. + parsedCert, _ := helpers.ParseCertificatePEM(signedCert) + if s.dbAccessor != nil { var certRecord = certdb.CertificateRecord{ Serial: certTBS.SerialNumber.String(), // this relies on the specific behavior of x509.CreateCertificate - // which updates certTBS AuthorityKeyId from the signer's SubjectKeyId - AKI: hex.EncodeToString(certTBS.AuthorityKeyId), + // which sets the AuthorityKeyId from the signer's SubjectKeyId + AKI: hex.EncodeToString(parsedCert.AuthorityKeyId), CALabel: req.Label, Status: "good", Expiry: certTBS.NotAfter, @@ -382,22 +414,6 @@ func (s *Signer) Sign(req signer.SignRequest) (cert []byte, err error) { return signedCert, nil } -func serializeSCTList(sctList []ct.SignedCertificateTimestamp) ([]byte, error) { - var buf bytes.Buffer - for _, sct := range sctList { - sct, err := ct.SerializeSCT(sct) - if err != nil { - return nil, err - } - binary.Write(&buf, binary.BigEndian, uint16(len(sct))) - buf.Write(sct) - } - - var sctListLengthField = make([]byte, 2) - binary.BigEndian.PutUint16(sctListLengthField, uint16(buf.Len())) - return bytes.Join([][]byte{sctListLengthField, buf.Bytes()}, nil), nil -} - // Info return a populated info.Resp struct or an error. func (s *Signer) Info(req info.Req) (resp *info.Resp, err error) { cert, err := s.Certificate(req.Label, req.Profile) @@ -441,6 +457,16 @@ func (s *Signer) SetDBAccessor(dba certdb.Accessor) { s.dbAccessor = dba } +// GetDBAccessor returns the signers' cert db accessor +func (s *Signer) GetDBAccessor() certdb.Accessor { + return s.dbAccessor +} + +// SetReqModifier does nothing for local +func (s *Signer) SetReqModifier(func(*http.Request, []byte)) { + // noop +} + // Policy returns the signer's policy. func (s *Signer) Policy() *config.Signing { return s.policy diff --git a/vendor/github.com/cloudflare/cfssl/signer/signer.go b/vendor/github.com/cloudflare/cfssl/signer/signer.go index 2911cfc2854..20101f682b6 100644 --- a/vendor/github.com/cloudflare/cfssl/signer/signer.go +++ b/vendor/github.com/cloudflare/cfssl/signer/signer.go @@ -12,6 +12,7 @@ import ( "encoding/asn1" "errors" "math/big" + "net/http" "strings" "time" @@ -19,13 +20,9 @@ import ( "github.com/cloudflare/cfssl/config" "github.com/cloudflare/cfssl/csr" cferr "github.com/cloudflare/cfssl/errors" - "github.com/cloudflare/cfssl/helpers" "github.com/cloudflare/cfssl/info" ) -// MaxPathLen is the default path length for a new CA certificate. -var MaxPathLen = 2 - // Subject contains the information that should be used to override the // subject information when signing a certificate. type Subject struct { @@ -50,13 +47,23 @@ type Extension struct { // Extensions requested in the CSR are ignored, except for those processed by // ParseCertificateRequest (mainly subjectAltName). type SignRequest struct { - Hosts []string `json:"hosts"` - Request string `json:"certificate_request"` - Subject *Subject `json:"subject,omitempty"` - Profile string `json:"profile"` - Label string `json:"label"` - Serial *big.Int `json:"serial,omitempty"` - Extensions []Extension `json:"extensions,omitempty"` + Hosts []string `json:"hosts"` + Request string `json:"certificate_request"` + Subject *Subject `json:"subject,omitempty"` + Profile string `json:"profile"` + CRLOverride string `json:"crl_override"` + Label string `json:"label"` + Serial *big.Int `json:"serial,omitempty"` + Extensions []Extension `json:"extensions,omitempty"` + // If provided, NotBefore will be used without modification (except + // for canonicalization) as the value of the notBefore field of the + // certificate. In particular no backdating adjustment will be made + // when NotBefore is provided. + NotBefore time.Time + // If provided, NotAfter will be used without modification (except + // for canonicalization) as the value of the notAfter field of the + // certificate. + NotAfter time.Time } // appendIf appends to a if s is not an empty string. @@ -98,9 +105,11 @@ type Signer interface { Info(info.Req) (*info.Resp, error) Policy() *config.Signing SetDBAccessor(certdb.Accessor) + GetDBAccessor() certdb.Accessor SetPolicy(*config.Signing) SigAlgo() x509.SignatureAlgorithm Sign(req SignRequest) (cert []byte, err error) + SetReqModifier(func(*http.Request, []byte)) } // Profile gets the specific profile from the signer @@ -157,26 +166,46 @@ func DefaultSigAlgo(priv crypto.Signer) x509.SignatureAlgorithm { // ParseCertificateRequest takes an incoming certificate request and // builds a certificate template from it. func ParseCertificateRequest(s Signer, csrBytes []byte) (template *x509.Certificate, err error) { - csr, err := x509.ParseCertificateRequest(csrBytes) + csrv, err := x509.ParseCertificateRequest(csrBytes) if err != nil { err = cferr.Wrap(cferr.CSRError, cferr.ParseFailed, err) return } - err = helpers.CheckSignature(csr, csr.SignatureAlgorithm, csr.RawTBSCertificateRequest, csr.Signature) + err = csrv.CheckSignature() if err != nil { err = cferr.Wrap(cferr.CSRError, cferr.KeyMismatch, err) return } template = &x509.Certificate{ - Subject: csr.Subject, - PublicKeyAlgorithm: csr.PublicKeyAlgorithm, - PublicKey: csr.PublicKey, + Subject: csrv.Subject, + PublicKeyAlgorithm: csrv.PublicKeyAlgorithm, + PublicKey: csrv.PublicKey, SignatureAlgorithm: s.SigAlgo(), - DNSNames: csr.DNSNames, - IPAddresses: csr.IPAddresses, - EmailAddresses: csr.EmailAddresses, + DNSNames: csrv.DNSNames, + IPAddresses: csrv.IPAddresses, + EmailAddresses: csrv.EmailAddresses, + } + + for _, val := range csrv.Extensions { + // Check the CSR for the X.509 BasicConstraints (RFC 5280, 4.2.1.9) + // extension and append to template if necessary + if val.Id.Equal(asn1.ObjectIdentifier{2, 5, 29, 19}) { + var constraints csr.BasicConstraints + var rest []byte + + if rest, err = asn1.Unmarshal(val.Value, &constraints); err != nil { + return nil, cferr.Wrap(cferr.CSRError, cferr.ParseFailed, err) + } else if len(rest) != 0 { + return nil, cferr.Wrap(cferr.CSRError, cferr.ParseFailed, errors.New("x509: trailing data after X.509 BasicConstraints")) + } + + template.BasicConstraintsValid = true + template.IsCA = constraints.IsCA + template.MaxPathLen = constraints.MaxPathLen + template.MaxPathLenZero = template.MaxPathLen == 0 + } } return @@ -211,17 +240,19 @@ func ComputeSKI(template *x509.Certificate) ([]byte, error) { // the certificate template as possible from the profiles and current // template. It fills in the key uses, expiration, revocation URLs // and SKI. -func FillTemplate(template *x509.Certificate, defaultProfile, profile *config.SigningProfile) error { +func FillTemplate(template *x509.Certificate, defaultProfile, profile *config.SigningProfile, notBefore time.Time, notAfter time.Time) error { ski, err := ComputeSKI(template) + if err != nil { + return err + } var ( eku []x509.ExtKeyUsage ku x509.KeyUsage backdate time.Duration expiry time.Duration - notBefore time.Time - notAfter time.Time crlURL, ocspURL string + issuerURL = profile.IssuerURL ) // The third value returned from Usages is a list of unknown key usages. @@ -229,7 +260,7 @@ func FillTemplate(template *x509.Certificate, defaultProfile, profile *config.Si // here. ku, eku, _ = profile.Usages() if profile.IssuerURL == nil { - profile.IssuerURL = defaultProfile.IssuerURL + issuerURL = defaultProfile.IssuerURL } if ku == 0 && len(eku) == 0 { @@ -246,30 +277,44 @@ func FillTemplate(template *x509.Certificate, defaultProfile, profile *config.Si if ocspURL = profile.OCSP; ocspURL == "" { ocspURL = defaultProfile.OCSP } - if backdate = profile.Backdate; backdate == 0 { - backdate = -5 * time.Minute - } else { - backdate = -1 * profile.Backdate - } - if !profile.NotBefore.IsZero() { - notBefore = profile.NotBefore.UTC() - } else { - notBefore = time.Now().Round(time.Minute).Add(backdate).UTC() + if notBefore.IsZero() { + if !profile.NotBefore.IsZero() { + notBefore = profile.NotBefore + } else { + if backdate = profile.Backdate; backdate == 0 { + backdate = -5 * time.Minute + } else { + backdate = -1 * profile.Backdate + } + notBefore = time.Now().Round(time.Minute).Add(backdate) + } } + notBefore = notBefore.UTC() - if !profile.NotAfter.IsZero() { - notAfter = profile.NotAfter.UTC() - } else { - notAfter = notBefore.Add(expiry).UTC() + if notAfter.IsZero() { + if !profile.NotAfter.IsZero() { + notAfter = profile.NotAfter + } else { + notAfter = notBefore.Add(expiry) + } } + notAfter = notAfter.UTC() template.NotBefore = notBefore template.NotAfter = notAfter template.KeyUsage = ku template.ExtKeyUsage = eku template.BasicConstraintsValid = true - template.IsCA = profile.CA + template.IsCA = profile.CAConstraint.IsCA + if template.IsCA { + template.MaxPathLen = profile.CAConstraint.MaxPathLen + if template.MaxPathLen == 0 { + template.MaxPathLenZero = profile.CAConstraint.MaxPathLenZero + } + template.DNSNames = nil + template.EmailAddresses = nil + } template.SubjectKeyId = ski if ocspURL != "" { @@ -279,8 +324,8 @@ func FillTemplate(template *x509.Certificate, defaultProfile, profile *config.Si template.CRLDistributionPoints = []string{crlURL} } - if len(profile.IssuerURL) != 0 { - template.IssuingCertificateURL = profile.IssuerURL + if len(issuerURL) != 0 { + template.IssuingCertificateURL = issuerURL } if len(profile.Policies) != 0 { err = addPolicies(template, profile.Policies) diff --git a/vendor/github.com/google/certificate-transparency-go/.gitignore b/vendor/github.com/google/certificate-transparency-go/.gitignore new file mode 100644 index 00000000000..c06f34d46ab --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/.gitignore @@ -0,0 +1,24 @@ +*.iml +*.swo +*.swp +*.tfstate +*.tfstate.backup +*~ +/.idea +/certcheck +/chainfix +/coverage.txt +/createtree +/crlcheck +/ctclient +/ct_server +/ct_hammer +/data +/dumpscts +/etcdiscover +/gossip_server +/preloader +/scanlog +/trillian_log_server +/trillian_log_signer +/trillian.json diff --git a/vendor/github.com/google/certificate-transparency-go/.travis.yml b/vendor/github.com/google/certificate-transparency-go/.travis.yml new file mode 100644 index 00000000000..9826dd698f9 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/.travis.yml @@ -0,0 +1,66 @@ +sudo: false +language: go +os: linux +go: 1.9 + +env: + - GOFLAGS= + - GOFLAGS=-race + - GOFLAGS= WITH_ETCD=true + - GOFLAGS=-race WITH_ETCD=true + +matrix: + fast_finish: true + +install: + - | + if [ ! -d $HOME/gopath/src/github.com/google ]; then + mkdir -p $HOME/gopath/src/github.com/google + ln -s $TRAVIS_BUILD_DIR $HOME/gopath/src/github.com/google/certificate-transparency-go + fi + - mkdir ../protoc + - | + ( + cd ../protoc + wget https://github.com/google/protobuf/releases/download/v3.2.0/protoc-3.2.0-${TRAVIS_OS_NAME}-x86_64.zip + unzip protoc-3.2.0-${TRAVIS_OS_NAME}-x86_64.zip + ) + - export PATH=$(pwd)/../protoc/bin:$PATH + - go get -d -t ./... + - go get github.com/alecthomas/gometalinter + - gometalinter --install + - go get -u github.com/golang/protobuf/proto + - go get -u github.com/golang/protobuf/protoc-gen-go + - go install github.com/golang/mock/mockgen + # install vendored etcd binary + - go install ./vendor/github.com/coreos/etcd/cmd/etcd + - go install ./vendor/github.com/coreos/etcd/cmd/etcdctl + - pushd ${GOPATH}/src/github.com/google/trillian + - go get -d -t ./... + - popd + +script: + - set -e + - export TRILLIAN_SQL_DRIVER=mysql + - cd $HOME/gopath/src/github.com/google/certificate-transparency-go + - ./scripts/presubmit.sh ${PRESUBMIT_OPTS} + - | + # Check re-generation didn't change anything + status=$(git status --porcelain | grep -v coverage) || : + if [[ -n ${status} ]]; then + echo "Regenerated files differ from checked-in versions: ${status}" + git status + git diff + exit 1 + fi + - | + if [[ "${WITH_ETCD}" == "true" ]]; then + export ETCD_DIR="${GOPATH}/bin" + fi + - ./trillian/integration/integration_test.sh + - HAMMER_OPTS="--operations=1500" ./trillian/integration/ct_hammer_test.sh + - set +e + +after_success: + - cp /tmp/coverage.txt . + - bash <(curl -s https://codecov.io/bash) diff --git a/vendor/github.com/google/certificate-transparency/AUTHORS b/vendor/github.com/google/certificate-transparency-go/AUTHORS similarity index 84% rename from vendor/github.com/google/certificate-transparency/AUTHORS rename to vendor/github.com/google/certificate-transparency-go/AUTHORS index 953f984be3b..649da70b020 100644 --- a/vendor/github.com/google/certificate-transparency/AUTHORS +++ b/vendor/github.com/google/certificate-transparency-go/AUTHORS @@ -10,13 +10,17 @@ Comodo CA Limited Ed Maste +Fiaz Hossain Google Inc. +Internet Security Research Group Jeff Trawick Katriel Cohn-Gordon +Laël Cellier Mark Schloesser NORDUnet A/S Nicholas Galbreath Oliver Weidner +PrimeKey Solutions AB Ruslan Kovalov Venafi, Inc. Vladimir Rutsky diff --git a/vendor/github.com/google/certificate-transparency-go/BUILD b/vendor/github.com/google/certificate-transparency-go/BUILD new file mode 100644 index 00000000000..1f3dcdfecd1 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/BUILD @@ -0,0 +1,37 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +go_library( + name = "go_default_library", + srcs = [ + "serialization.go", + "signatures.go", + "types.go", + ], + importpath = "github.com/google/certificate-transparency-go", + visibility = ["//visibility:public"], + deps = [ + "//vendor/github.com/google/certificate-transparency-go/tls:go_default_library", + "//vendor/github.com/google/certificate-transparency-go/x509:go_default_library", + ], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [ + ":package-srcs", + "//vendor/github.com/google/certificate-transparency-go/asn1:all-srcs", + "//vendor/github.com/google/certificate-transparency-go/client:all-srcs", + "//vendor/github.com/google/certificate-transparency-go/jsonclient:all-srcs", + "//vendor/github.com/google/certificate-transparency-go/tls:all-srcs", + "//vendor/github.com/google/certificate-transparency-go/x509:all-srcs", + ], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/vendor/github.com/google/certificate-transparency-go/CONTRIBUTING.md b/vendor/github.com/google/certificate-transparency-go/CONTRIBUTING.md new file mode 100644 index 00000000000..43de4c9d470 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/CONTRIBUTING.md @@ -0,0 +1,58 @@ +# How to contribute # + +We'd love to accept your patches and contributions to this project. There are +a just a few small guidelines you need to follow. + + +## Contributor License Agreement ## + +Contributions to any Google project must be accompanied by a Contributor +License Agreement. This is not a copyright **assignment**, it simply gives +Google permission to use and redistribute your contributions as part of the +project. + + * If you are an individual writing original source code and you're sure you + own the intellectual property, then you'll need to sign an [individual + CLA][]. + + * If you work for a company that wants to allow you to contribute your work, + then you'll need to sign a [corporate CLA][]. + +You generally only need to submit a CLA once, so if you've already submitted +one (even if it was for a different project), you probably don't need to do it +again. + +[individual CLA]: https://developers.google.com/open-source/cla/individual +[corporate CLA]: https://developers.google.com/open-source/cla/corporate + +Once your CLA is submitted (or if you already submitted one for +another Google project), make a commit adding yourself to the +[AUTHORS][] and [CONTRIBUTORS][] files. This commit can be part +of your first [pull request][]. + +[AUTHORS]: AUTHORS +[CONTRIBUTORS]: CONTRIBUTORS + + +## Submitting a patch ## + + 1. It's generally best to start by opening a new issue describing the bug or + feature you're intending to fix. Even if you think it's relatively minor, + it's helpful to know what people are working on. Mention in the initial + issue that you are planning to work on that bug or feature so that it can + be assigned to you. + + 1. Follow the normal process of [forking][] the project, and setup a new + branch to work in. It's important that each group of changes be done in + separate branches in order to ensure that a pull request only includes the + commits related to that bug or feature. + + 1. Do your best to have [well-formed commit messages][] for each change. + This provides consistency throughout the project, and ensures that commit + messages are able to be formatted properly by various git tools. + + 1. Finally, push the commits to your fork and submit a [pull request][]. + +[forking]: https://help.github.com/articles/fork-a-repo +[well-formed commit messages]: http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html +[pull request]: https://help.github.com/articles/creating-a-pull-request diff --git a/vendor/github.com/google/certificate-transparency/CONTRIBUTORS b/vendor/github.com/google/certificate-transparency-go/CONTRIBUTORS similarity index 82% rename from vendor/github.com/google/certificate-transparency/CONTRIBUTORS rename to vendor/github.com/google/certificate-transparency-go/CONTRIBUTORS index c72891120fc..4336fc52e2c 100644 --- a/vendor/github.com/google/certificate-transparency/CONTRIBUTORS +++ b/vendor/github.com/google/certificate-transparency-go/CONTRIBUTORS @@ -26,13 +26,20 @@ Adam Eijdenberg Al Cutter Ben Laurie Chris Kennelly +David Drysdale Deyan Bektchiev Ed Maste Emilia Kasper Eran Messeri +Fiaz Hossain +Gary Belvin Jeff Trawick +Joe Tsai +Kat Joyce Katriel Cohn-Gordon +Kiril Nikolov Konrad Kraszewski +Laël Cellier Linus Nordberg Mark Schloesser Nicholas Galbreath @@ -41,7 +48,10 @@ Pascal Leroy Paul Hadfield Paul Lietar Pierre Phaneuf +Rob Percival Rob Stradling +Roland Shoemaker Ruslan Kovalov +Samuel Lidén Borell Vladimir Rutsky Ximin Luo diff --git a/vendor/github.com/google/certificate-transparency/LICENSE b/vendor/github.com/google/certificate-transparency-go/LICENSE similarity index 100% rename from vendor/github.com/google/certificate-transparency/LICENSE rename to vendor/github.com/google/certificate-transparency-go/LICENSE diff --git a/vendor/github.com/google/certificate-transparency-go/README.md b/vendor/github.com/google/certificate-transparency-go/README.md new file mode 100644 index 00000000000..6b71eaa987b --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/README.md @@ -0,0 +1,144 @@ +# Certificate Transparency: Go Code + +[![Build Status](https://travis-ci.org/google/certificate-transparency-go.svg?branch=master)](https://travis-ci.org/google/certificate-transparency-go) +[![Go Report Card](https://goreportcard.com/badge/github.com/google/certificate-transparency-go)](https://goreportcard.com/report/github.com/google/certificate-transparency-go) +[![GoDoc](https://godoc.org/github.com/google/certificate-transparency-go?status.svg)](https://godoc.org/github.com/google/certificate-transparency-go) + +This repository holds Go code related to +[Certificate Transparency](https://www.certificate-transparency.org/) (CT). The +repository requires Go version 1.9. + + - [Repository Structure](#repository-structure) + - [Trillian CT Personality](#trillian-ct-personality) + - [Working on the Code](#working-on-the-code) + - [Rebuilding Generated Code](#rebuilding-generated-code) + - [Updating Vendor Code](#updating-vendor-code) + - [Running Codebase Checks](#running-codebase-checks) + +## Repository Structure + +The main parts of the repository are: + + - Encoding libraries: + - `asn1/` and `x509/` are forks of the upstream Go `encoding/asn1` and + `crypto/x509` libraries. We maintain separate forks of these packages + because CT is intended to act as an observatory of certificates across the + ecosystem; as such, we need to be able to process somewhat-malformed + certificates that the stricter upstream code would (correctly) reject. + Our `x509` fork also includes code for working with the + [pre-certificates defined in RFC 6962](https://tools.ietf.org/html/rfc6962#section-3.1). + - `tls` holds a library for processing TLS-encoded data as described in + [RFC 5246](https://tools.ietf.org/html/rfc5246). + - `x509util` provides additional utilities for dealing with + `x509.Certificate`s. + - CT client libraries: + - The top-level `ct` package (in `.`) holds types and utilities for working + with CT data structures defined in + [RFC 6962](https://tools.ietf.org/html/rfc6962). + - `client/` and `jsonclient/` hold libraries that allow access to CT Logs + via entrypoints described in + [section 4 of RFC 6962](https://tools.ietf.org/html/rfc6962#section-4). + - `scanner/` holds a library for scanning the entire contents of an existing + CT Log. + - Command line tools: + - `./client/ctclient` allows interaction with a CT Log + - `./scanner/scanlog` allows an existing CT Log to be scanned for certificates + of interest; please be polite when running this tool against a Log. + - `./x509util/certcheck` allows display and verification of certificates + - `./x509util/crlcheck` allows display and verification of certificate + revocation lists (CRLs). + - CT Personality for [Trillian](https://github.com/google/trillian): + - `trillian/` holds code that allows a Certificate Transparency Log to be + run using a Trillian Log as its back-end -- see + [below](#trillian-ct-personality). + + +## Trillian CT Personality + +The `trillian/` subdirectory holds code and scripts for running a CT Log based +on the [Trillian](https://github.com/google/trillian) general transparency Log. + +The main code for the CT personality is held in `trillian/ctfe`; this code +responds to HTTP requests on the +[CT API paths](https://tools.ietf.org/html/rfc6962#section-4) and translates +them to the equivalent gRPC API requests to the Trillian Log. + +This obviously relies on the gRPC API definitions at +`github.com/google/trillian`; the code also uses common libraries from the +Trillian project for: + - exposing monitoring and statistics via an `interface` and corresponding + Prometheus implementation (`github.com/google/trillian/monitoring/...`) + - dealing with cryptographic keys (`github.com/google/trillian/crypto/...`). + +The `trillian/integration/` directory holds scripts and tests for running the whole +system locally. In particular: + - `trillian/integration/ct_integration_test.sh` brings up local processes + running a Trillian Log server, signer and a CT personality, and exercises the + complete set of RFC 6962 API entrypoints. + - `trillian/integration/ct_hammer_test.sh` brings up a complete system and runs + a continuous randomized test of the CT entrypoints. + +These scripts require a local database instance to be configured as described +in the [Trillian instructions](https://github.com/google/trillian#mysql-setup). + + +## Working on the Code + +Developers who want to make changes to the codebase need some additional +dependencies and tools, described in the following sections. The +[Travis configuration](.travis.yml) for the codebase is also useful reference +for the required tools and scripts, as it may be more up-to-date than this +document. + +### Rebuilding Generated Code + +Some of the CT Go code is autogenerated from other files: + + - [Protocol buffer](https://developers.google.com/protocol-buffers/) message + definitions are converted to `.pb.go` implementations. + - A mock implementation of the Trillian gRPC API (in `trillian/mockclient`) is + created with [GoMock](https://github.com/golang/mock). + +Re-generating mock or protobuffer files is only needed if you're changing +the original files; if you do, you'll need to install the prerequisites: + + - `mockgen` tool from https://github.com/golang/mock + - `protoc`, [Go support for protoc](https://github.com/golang/protobuf) (see + documentation linked from the + [protobuf site](https://github.com/google/protobuf)) + +and run the following: + +```bash +go generate -x ./... # hunts for //go:generate comments and runs them +``` + +### Updating Vendor Code + +The codebase includes a couple of external projects under the `vendor/` +subdirectory, to ensure that builds use a fixed version (typically because the +upstream repository does not guarantee back-compatibility between the tip +`master` branch and the current stable release). See +[instructions in the Trillian repo](https://github.com/google/trillian#updating-vendor-code) +for how to update vendored subtrees. + + +### Running Codebase Checks + +The [`scripts/presubmit.sh`](scripts/presubmit.sh) script runs various tools +and tests over the codebase. + +```bash +# Install gometalinter and all linters +go get -u github.com/alecthomas/gometalinter +gometalinter --install + +# Run code generation, build, test and linters +./scripts/presubmit.sh + +# Run build, test and linters but skip code generation +./scripts/presubmit.sh --no-generate + +# Or just run the linters alone: +gometalinter --config=gometalinter.json ./... +``` diff --git a/vendor/github.com/google/certificate-transparency/go/asn1/BUILD b/vendor/github.com/google/certificate-transparency-go/asn1/BUILD similarity index 88% rename from vendor/github.com/google/certificate-transparency/go/asn1/BUILD rename to vendor/github.com/google/certificate-transparency-go/asn1/BUILD index 07d6ac5b358..fffc27ce33d 100644 --- a/vendor/github.com/google/certificate-transparency/go/asn1/BUILD +++ b/vendor/github.com/google/certificate-transparency-go/asn1/BUILD @@ -7,7 +7,7 @@ go_library( "common.go", "marshal.go", ], - importpath = "github.com/google/certificate-transparency/go/asn1", + importpath = "github.com/google/certificate-transparency-go/asn1", visibility = ["//visibility:public"], ) diff --git a/vendor/github.com/google/certificate-transparency/go/asn1/asn1.go b/vendor/github.com/google/certificate-transparency-go/asn1/asn1.go old mode 100755 new mode 100644 similarity index 63% rename from vendor/github.com/google/certificate-transparency/go/asn1/asn1.go rename to vendor/github.com/google/certificate-transparency-go/asn1/asn1.go index e9874779523..3af7c48760e --- a/vendor/github.com/google/certificate-transparency/go/asn1/asn1.go +++ b/vendor/github.com/google/certificate-transparency-go/asn1/asn1.go @@ -8,12 +8,10 @@ // See also ``A Layman's Guide to a Subset of ASN.1, BER, and DER,'' // http://luca.ntop.org/Teaching/Appunti/asn1.html. // -// START CT CHANGES // This is a fork of the Go standard library ASN.1 implementation // (encoding/asn1). The main difference is that this version tries to correct // for errors (e.g. use of tagPrintableString when the string data is really // ISO8859-1 - a common error present in many x509 certificates in the wild.) -// END CT CHANGES package asn1 // ASN.1 is a syntax for specifying abstract objects and BER, DER, PER, XER etc @@ -27,40 +25,53 @@ package asn1 // everything by any means. import ( - // START CT CHANGES "errors" "fmt" - // END CT CHANGES + "math" "math/big" "reflect" - // START CT CHANGES + "strconv" "strings" - // END CT CHANGES "time" + "unicode/utf8" ) // A StructuralError suggests that the ASN.1 data is valid, but the Go type // which is receiving it doesn't match. type StructuralError struct { - Msg string + Msg string + Field string } -func (e StructuralError) Error() string { return "asn1: structure error: " + e.Msg } +func (e StructuralError) Error() string { + var prefix string + if e.Field != "" { + prefix = e.Field + ": " + } + return "asn1: structure error: " + prefix + e.Msg +} // A SyntaxError suggests that the ASN.1 data is invalid. type SyntaxError struct { - Msg string + Msg string + Field string } -func (e SyntaxError) Error() string { return "asn1: syntax error: " + e.Msg } +func (e SyntaxError) Error() string { + var prefix string + if e.Field != "" { + prefix = e.Field + ": " + } + return "asn1: syntax error: " + prefix + e.Msg +} // We start by dealing with each of the primitive types in turn. // BOOLEAN -func parseBool(bytes []byte) (ret bool, err error) { +func parseBool(bytes []byte, fieldName string) (ret bool, err error) { if len(bytes) != 1 { - err = SyntaxError{"invalid boolean"} + err = SyntaxError{"invalid boolean", fieldName} return } @@ -73,7 +84,7 @@ func parseBool(bytes []byte) (ret bool, err error) { case 0xff: ret = true default: - err = SyntaxError{"invalid boolean"} + err = SyntaxError{"invalid boolean", fieldName} } return @@ -81,12 +92,31 @@ func parseBool(bytes []byte) (ret bool, err error) { // INTEGER +// checkInteger returns nil if the given bytes are a valid DER-encoded +// INTEGER and an error otherwise. +func checkInteger(bytes []byte, fieldName string) error { + if len(bytes) == 0 { + return StructuralError{"empty integer", fieldName} + } + if len(bytes) == 1 { + return nil + } + if (bytes[0] == 0 && bytes[1]&0x80 == 0) || (bytes[0] == 0xff && bytes[1]&0x80 == 0x80) { + return StructuralError{"integer not minimally-encoded", fieldName} + } + return nil +} + // parseInt64 treats the given bytes as a big-endian, signed integer and // returns the result. -func parseInt64(bytes []byte) (ret int64, err error) { +func parseInt64(bytes []byte, fieldName string) (ret int64, err error) { + err = checkInteger(bytes, fieldName) + if err != nil { + return + } if len(bytes) > 8 { // We'll overflow an int64 in this case. - err = StructuralError{"integer too large"} + err = StructuralError{"integer too large", fieldName} return } for bytesRead := 0; bytesRead < len(bytes); bytesRead++ { @@ -102,13 +132,16 @@ func parseInt64(bytes []byte) (ret int64, err error) { // parseInt treats the given bytes as a big-endian, signed integer and returns // the result. -func parseInt32(bytes []byte) (int32, error) { - ret64, err := parseInt64(bytes) +func parseInt32(bytes []byte, fieldName string) (int32, error) { + if err := checkInteger(bytes, fieldName); err != nil { + return 0, err + } + ret64, err := parseInt64(bytes, fieldName) if err != nil { return 0, err } if ret64 != int64(int32(ret64)) { - return 0, StructuralError{"integer too large"} + return 0, StructuralError{"integer too large", fieldName} } return int32(ret64), nil } @@ -117,7 +150,10 @@ var bigOne = big.NewInt(1) // parseBigInt treats the given bytes as a big-endian, signed integer and returns // the result. -func parseBigInt(bytes []byte) *big.Int { +func parseBigInt(bytes []byte, fieldName string) (*big.Int, error) { + if err := checkInteger(bytes, fieldName); err != nil { + return nil, err + } ret := new(big.Int) if len(bytes) > 0 && bytes[0]&0x80 == 0x80 { // This is a negative number. @@ -128,10 +164,10 @@ func parseBigInt(bytes []byte) *big.Int { ret.SetBytes(notBytes) ret.Add(ret, bigOne) ret.Neg(ret) - return ret + return ret, nil } ret.SetBytes(bytes) - return ret + return ret, nil } // BIT STRING @@ -174,16 +210,16 @@ func (b BitString) RightAlign() []byte { } // parseBitString parses an ASN.1 bit string from the given byte slice and returns it. -func parseBitString(bytes []byte) (ret BitString, err error) { +func parseBitString(bytes []byte, fieldName string) (ret BitString, err error) { if len(bytes) == 0 { - err = SyntaxError{"zero length BIT STRING"} + err = SyntaxError{"zero length BIT STRING", fieldName} return } paddingBits := int(bytes[0]) if paddingBits > 7 || len(bytes) == 1 && paddingBits > 0 || bytes[len(bytes)-1]&((1< 0 { + s += "." + } + s += strconv.Itoa(v) + } + + return s +} + // parseObjectIdentifier parses an OBJECT IDENTIFIER from the given bytes and // returns it. An object identifier is a sequence of variable length integers // that are assigned in a hierarchy. -func parseObjectIdentifier(bytes []byte) (s []int, err error) { +func parseObjectIdentifier(bytes []byte, fieldName string) (s []int, err error) { if len(bytes) == 0 { - err = SyntaxError{"zero length OBJECT IDENTIFIER"} + err = SyntaxError{"zero length OBJECT IDENTIFIER", fieldName} return } @@ -227,7 +284,7 @@ func parseObjectIdentifier(bytes []byte) (s []int, err error) { // According to this packing, value1 can take the values 0, 1 and 2 only. // When value1 = 0 or value1 = 1, then value2 is <= 39. When value1 = 2, // then there are no restrictions on value2. - v, offset, err := parseBase128Int(bytes, 0) + v, offset, err := parseBase128Int(bytes, 0, fieldName) if err != nil { return } @@ -241,7 +298,7 @@ func parseObjectIdentifier(bytes []byte) (s []int, err error) { i := 2 for ; offset < len(bytes); i++ { - v, offset, err = parseBase128Int(bytes, offset) + v, offset, err = parseBase128Int(bytes, offset, fieldName) if err != nil { return } @@ -263,22 +320,30 @@ type Flag bool // parseBase128Int parses a base-128 encoded int from the given offset in the // given byte slice. It returns the value and the new offset. -func parseBase128Int(bytes []byte, initOffset int) (ret, offset int, err error) { +func parseBase128Int(bytes []byte, initOffset int, fieldName string) (ret, offset int, err error) { offset = initOffset + var ret64 int64 for shifted := 0; offset < len(bytes); shifted++ { - if shifted > 4 { - err = StructuralError{"base 128 integer too large"} + // 5 * 7 bits per byte == 35 bits of data + // Thus the representation is either non-minimal or too large for an int32 + if shifted == 5 { + err = StructuralError{"base 128 integer too large", fieldName} return } - ret <<= 7 + ret64 <<= 7 b := bytes[offset] - ret |= int(b & 0x7f) + ret64 |= int64(b & 0x7f) offset++ if b&0x80 == 0 { + ret = int(ret64) + // Ensure that the returned value fits in an int on all platforms + if ret64 > math.MaxInt32 { + err = StructuralError{"base 128 integer too large", fieldName} + } return } } - err = SyntaxError{"truncated base 128 integer"} + err = SyntaxError{"truncated base 128 integer", fieldName} return } @@ -286,11 +351,23 @@ func parseBase128Int(bytes []byte, initOffset int) (ret, offset int, err error) func parseUTCTime(bytes []byte) (ret time.Time, err error) { s := string(bytes) - ret, err = time.Parse("0601021504Z0700", s) + + formatStr := "0601021504Z0700" + ret, err = time.Parse(formatStr, s) if err != nil { - ret, err = time.Parse("060102150405Z0700", s) + formatStr = "060102150405Z0700" + ret, err = time.Parse(formatStr, s) } - if err == nil && ret.Year() >= 2050 { + if err != nil { + return + } + + if serialized := ret.Format(formatStr); serialized != s { + err = fmt.Errorf("asn1: time did not serialize back to the original value and may be invalid: given %q, but serialized as %q", s, serialized) + return + } + + if ret.Year() >= 2050 { // UTCTime only encodes times prior to 2050. See https://tools.ietf.org/html/rfc5280#section-4.1.2.5.1 ret = ret.AddDate(-100, 0, 0) } @@ -301,17 +378,47 @@ func parseUTCTime(bytes []byte) (ret time.Time, err error) { // parseGeneralizedTime parses the GeneralizedTime from the given byte slice // and returns the resulting time. func parseGeneralizedTime(bytes []byte) (ret time.Time, err error) { - return time.Parse("20060102150405Z0700", string(bytes)) + const formatStr = "20060102150405Z0700" + s := string(bytes) + + if ret, err = time.Parse(formatStr, s); err != nil { + return + } + + if serialized := ret.Format(formatStr); serialized != s { + err = fmt.Errorf("asn1: time did not serialize back to the original value and may be invalid: given %q, but serialized as %q", s, serialized) + } + + return +} + +// NumericString + +// parseNumericString parses an ASN.1 NumericString from the given byte array +// and returns it. +func parseNumericString(bytes []byte, fieldName string) (ret string, err error) { + for _, b := range bytes { + if !isNumeric(b) { + return "", SyntaxError{"NumericString contains invalid character", fieldName} + } + } + return string(bytes), nil +} + +// isNumeric reports whether the given b is in the ASN.1 NumericString set. +func isNumeric(b byte) bool { + return '0' <= b && b <= '9' || + b == ' ' } // PrintableString -// parsePrintableString parses a ASN.1 PrintableString from the given byte +// parsePrintableString parses an ASN.1 PrintableString from the given byte // array and returns it. -func parsePrintableString(bytes []byte) (ret string, err error) { +func parsePrintableString(bytes []byte, fieldName string) (ret string, err error) { for _, b := range bytes { - if !isPrintable(b) { - err = SyntaxError{"PrintableString contains invalid character"} + if !isPrintable(b, allowAsterisk, allowAmpersand) { + err = SyntaxError{"PrintableString contains invalid character", fieldName} return } } @@ -319,8 +426,21 @@ func parsePrintableString(bytes []byte) (ret string, err error) { return } -// isPrintable returns true iff the given b is in the ASN.1 PrintableString set. -func isPrintable(b byte) bool { +type asteriskFlag bool +type ampersandFlag bool + +const ( + allowAsterisk asteriskFlag = true + rejectAsterisk asteriskFlag = false + + allowAmpersand ampersandFlag = true + rejectAmpersand ampersandFlag = false +) + +// isPrintable reports whether the given b is in the ASN.1 PrintableString set. +// If asterisk is allowAsterisk then '*' is also allowed, reflecting existing +// practice. If ampersand is allowAmpersand then '&' is allowed as well. +func isPrintable(b byte, asterisk asteriskFlag, ampersand ampersandFlag) bool { return 'a' <= b && b <= 'z' || 'A' <= b && b <= 'Z' || '0' <= b && b <= '9' || @@ -333,17 +453,22 @@ func isPrintable(b byte) bool { // This is technically not allowed in a PrintableString. // However, x509 certificates with wildcard strings don't // always use the correct string type so we permit it. - b == '*' + (bool(asterisk) && b == '*') || + // This is not technically allowed either. However, not + // only is it relatively common, but there are also a + // handful of CA certificates that contain it. At least + // one of which will not expire until 2027. + (bool(ampersand) && b == '&') } // IA5String -// parseIA5String parses a ASN.1 IA5String (ASCII string) from the given +// parseIA5String parses an ASN.1 IA5String (ASCII string) from the given // byte slice and returns it. -func parseIA5String(bytes []byte) (ret string, err error) { +func parseIA5String(bytes []byte, fieldName string) (ret string, err error) { for _, b := range bytes { - if b >= 0x80 { - err = SyntaxError{"IA5String contains invalid character"} + if b >= utf8.RuneSelf { + err = SyntaxError{"IA5String contains invalid character", fieldName} return } } @@ -353,7 +478,7 @@ func parseIA5String(bytes []byte) (ret string, err error) { // T61String -// parseT61String parses a ASN.1 T61String (8-bit clean string) from the given +// parseT61String parses an ASN.1 T61String (8-bit clean string) from the given // byte slice and returns it. func parseT61String(bytes []byte) (ret string, err error) { return string(bytes), nil @@ -361,9 +486,12 @@ func parseT61String(bytes []byte) (ret string, err error) { // UTF8String -// parseUTF8String parses a ASN.1 UTF8String (raw UTF-8) from the given byte +// parseUTF8String parses an ASN.1 UTF8String (raw UTF-8) from the given byte // array and returns it. func parseUTF8String(bytes []byte) (ret string, err error) { + if !utf8.Valid(bytes) { + return "", errors.New("asn1: invalid UTF-8 string") + } return string(bytes), nil } @@ -386,8 +514,14 @@ type RawContent []byte // into a byte slice. It returns the parsed data and the new offset. SET and // SET OF (tag 17) are mapped to SEQUENCE and SEQUENCE OF (tag 16) since we // don't distinguish between ordered and unordered objects in this code. -func parseTagAndLength(bytes []byte, initOffset int) (ret tagAndLength, offset int, err error) { +func parseTagAndLength(bytes []byte, initOffset int, fieldName string) (ret tagAndLength, offset int, err error) { offset = initOffset + // parseTagAndLength should not be called without at least a single + // byte to read. Thus this check is for robustness: + if offset >= len(bytes) { + err = errors.New("asn1: internal error in parseTagAndLength") + return + } b := bytes[offset] offset++ ret.class = int(b >> 6) @@ -397,13 +531,18 @@ func parseTagAndLength(bytes []byte, initOffset int) (ret tagAndLength, offset i // If the bottom five bits are set, then the tag number is actually base 128 // encoded afterwards if ret.tag == 0x1f { - ret.tag, offset, err = parseBase128Int(bytes, offset) + ret.tag, offset, err = parseBase128Int(bytes, offset, fieldName) if err != nil { return } + // Tags should be encoded in minimal form. + if ret.tag < 0x1f { + err = SyntaxError{"non-minimal tag", fieldName} + return + } } if offset >= len(bytes) { - err = SyntaxError{"truncated tag or length"} + err = SyntaxError{"truncated tag or length", fieldName} return } b = bytes[offset] @@ -415,13 +554,13 @@ func parseTagAndLength(bytes []byte, initOffset int) (ret tagAndLength, offset i // Bottom 7 bits give the number of length bytes to follow. numBytes := int(b & 0x7f) if numBytes == 0 { - err = SyntaxError{"indefinite length found (not DER)"} + err = SyntaxError{"indefinite length found (not DER)", fieldName} return } ret.length = 0 for i := 0; i < numBytes; i++ { if offset >= len(bytes) { - err = SyntaxError{"truncated tag or length"} + err = SyntaxError{"truncated tag or length", fieldName} return } b = bytes[offset] @@ -429,17 +568,22 @@ func parseTagAndLength(bytes []byte, initOffset int) (ret tagAndLength, offset i if ret.length >= 1<<23 { // We can't shift ret.length up without // overflowing. - err = StructuralError{"length too large"} + err = StructuralError{"length too large", fieldName} return } ret.length <<= 8 ret.length |= int(b) if ret.length == 0 { // DER requires that lengths be minimal. - err = StructuralError{"superfluous leading zeros in length"} + err = StructuralError{"superfluous leading zeros in length", fieldName} return } } + // Short lengths must be encoded in short form. + if ret.length < 0x80 { + err = StructuralError{"non-minimal length", fieldName} + return + } } return @@ -448,10 +592,10 @@ func parseTagAndLength(bytes []byte, initOffset int) (ret tagAndLength, offset i // parseSequenceOf is used for SEQUENCE OF and SET OF values. It tries to parse // a number of ASN.1 values from the given byte slice and returns them as a // slice of Go values of the given type. -func parseSequenceOf(bytes []byte, sliceType reflect.Type, elemType reflect.Type) (ret reflect.Value, err error) { - expectedTag, compoundType, ok := getUniversalType(elemType) +func parseSequenceOf(bytes []byte, sliceType reflect.Type, elemType reflect.Type, fieldName string) (ret reflect.Value, err error) { + matchAny, expectedTag, compoundType, ok := getUniversalType(elemType) if !ok { - err = StructuralError{"unknown Go type for slice"} + err = StructuralError{"unknown Go type for slice", fieldName} return } @@ -460,21 +604,27 @@ func parseSequenceOf(bytes []byte, sliceType reflect.Type, elemType reflect.Type numElements := 0 for offset := 0; offset < len(bytes); { var t tagAndLength - t, offset, err = parseTagAndLength(bytes, offset) + t, offset, err = parseTagAndLength(bytes, offset, fieldName) if err != nil { return } - // We pretend that GENERAL STRINGs are PRINTABLE STRINGs so - // that a sequence of them can be parsed into a []string. - if t.tag == tagGeneralString { - t.tag = tagPrintableString + switch t.tag { + case TagIA5String, TagGeneralString, TagT61String, TagUTF8String, TagNumericString: + // We pretend that various other string types are + // PRINTABLE STRINGs so that a sequence of them can be + // parsed into a []string. + t.tag = TagPrintableString + case TagGeneralizedTime, TagUTCTime: + // Likewise, both time types are treated the same. + t.tag = TagUTCTime } - if t.class != classUniversal || t.isCompound != compoundType || t.tag != expectedTag { - err = StructuralError{"sequence tag mismatch"} + + if !matchAny && (t.class != ClassUniversal || t.isCompound != compoundType || t.tag != expectedTag) { + err = StructuralError{fmt.Sprintf("sequence tag mismatch (got:%+v, want:0/%d/%t)", t, expectedTag, compoundType), fieldName} return } if invalidLength(offset, t.length, len(bytes)) { - err = SyntaxError{"truncated sequence"} + err = SyntaxError{"truncated sequence", fieldName} return } offset += t.length @@ -509,8 +659,6 @@ func invalidLength(offset, length, sliceLength int) bool { return offset+length < offset || offset+length > sliceLength } -// START CT CHANGES - // Tests whether the data in |bytes| would be a valid ISO8859-1 string. // Clearly, a sequence of bytes comprised solely of valid ISO8859-1 // codepoints does not imply that the encoding MUST be ISO8859-1, rather that @@ -556,8 +704,6 @@ func iso8859_1ToUTF8(bytes []byte) string { return string(buf) } -// END CT CHANGES - // parseField is the main parsing function. Given a byte slice and an offset // into the array, it will try to parse a suitable ASN.1 value out and store it // in the given Value. @@ -568,46 +714,28 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam // If we have run out of data, it may be that there are optional elements at the end. if offset == len(bytes) { if !setDefaultValue(v, params) { - err = SyntaxError{"sequence truncated"} + err = SyntaxError{"sequence truncated", params.name} } return } - // Deal with raw values. - if fieldType == rawValueType { - var t tagAndLength - t, offset, err = parseTagAndLength(bytes, offset) - if err != nil { - return - } - if invalidLength(offset, t.length, len(bytes)) { - err = SyntaxError{"data truncated"} - return - } - result := RawValue{t.class, t.tag, t.isCompound, bytes[offset : offset+t.length], bytes[initOffset : offset+t.length]} - offset += t.length - v.Set(reflect.ValueOf(result)) - return - } - // Deal with the ANY type. if ifaceType := fieldType; ifaceType.Kind() == reflect.Interface && ifaceType.NumMethod() == 0 { var t tagAndLength - t, offset, err = parseTagAndLength(bytes, offset) + t, offset, err = parseTagAndLength(bytes, offset, params.name) if err != nil { return } if invalidLength(offset, t.length, len(bytes)) { - err = SyntaxError{"data truncated"} + err = SyntaxError{"data truncated", params.name} return } var result interface{} - if !t.isCompound && t.class == classUniversal { + if !t.isCompound && t.class == ClassUniversal { innerBytes := bytes[offset : offset+t.length] switch t.tag { - case tagPrintableString: - result, err = parsePrintableString(innerBytes) - // START CT CHANGES + case TagPrintableString: + result, err = parsePrintableString(innerBytes, params.name) if err != nil && strings.Contains(err.Error(), "PrintableString contains invalid character") { // Probably an ISO8859-1 string stuffed in, check if it // would be valid and assume that's what's happened if so, @@ -623,22 +751,25 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam err = errors.New("PrintableString contains invalid character, but couldn't determine correct String type.") } } - // END CT CHANGES - case tagIA5String: - result, err = parseIA5String(innerBytes) - case tagT61String: + case TagNumericString: + result, err = parseNumericString(innerBytes, params.name) + case TagIA5String: + result, err = parseIA5String(innerBytes, params.name) + case TagT61String: result, err = parseT61String(innerBytes) - case tagUTF8String: + case TagUTF8String: result, err = parseUTF8String(innerBytes) - case tagInteger: - result, err = parseInt64(innerBytes) - case tagBitString: - result, err = parseBitString(innerBytes) - case tagOID: - result, err = parseObjectIdentifier(innerBytes) - case tagUTCTime: + case TagInteger: + result, err = parseInt64(innerBytes, params.name) + case TagBitString: + result, err = parseBitString(innerBytes, params.name) + case TagOID: + result, err = parseObjectIdentifier(innerBytes, params.name) + case TagUTCTime: result, err = parseUTCTime(innerBytes) - case tagOctetString: + case TagGeneralizedTime: + result, err = parseGeneralizedTime(innerBytes) + case TagOctetString: result = innerBytes default: // If we don't know how to handle the type, we just leave Value as nil. @@ -653,30 +784,31 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam } return } - universalTag, compoundType, ok1 := getUniversalType(fieldType) - if !ok1 { - err = StructuralError{fmt.Sprintf("unknown Go type: %v", fieldType)} - return - } - t, offset, err := parseTagAndLength(bytes, offset) + t, offset, err := parseTagAndLength(bytes, offset, params.name) if err != nil { return } if params.explicit { - expectedClass := classContextSpecific + expectedClass := ClassContextSpecific if params.application { - expectedClass = classApplication + expectedClass = ClassApplication + } + if offset == len(bytes) { + err = StructuralError{"explicit tag has no child", params.name} + return } if t.class == expectedClass && t.tag == *params.tag && (t.length == 0 || t.isCompound) { - if t.length > 0 { - t, offset, err = parseTagAndLength(bytes, offset) + if fieldType == rawValueType { + // The inner element should not be parsed for RawValues. + } else if t.length > 0 { + t, offset, err = parseTagAndLength(bytes, offset, params.name) if err != nil { return } } else { if fieldType != flagType { - err = StructuralError{"zero length explicit tag was not an asn1.Flag"} + err = StructuralError{"zero length explicit tag was not an asn1.Flag", params.name} return } v.SetBool(true) @@ -688,55 +820,73 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam if ok { offset = initOffset } else { - err = StructuralError{"explicitly tagged member didn't match"} + err = StructuralError{"explicitly tagged member didn't match", params.name} } return } } + matchAny, universalTag, compoundType, ok1 := getUniversalType(fieldType) + if !ok1 { + err = StructuralError{fmt.Sprintf("unknown Go type: %v", fieldType), params.name} + return + } + // Special case for strings: all the ASN.1 string types map to the Go // type string. getUniversalType returns the tag for PrintableString // when it sees a string, so if we see a different string type on the // wire, we change the universal type to match. - if universalTag == tagPrintableString { - switch t.tag { - case tagIA5String, tagGeneralString, tagT61String, tagUTF8String: - universalTag = t.tag + if universalTag == TagPrintableString { + if t.class == ClassUniversal { + switch t.tag { + case TagIA5String, TagGeneralString, TagT61String, TagUTF8String, TagNumericString: + universalTag = t.tag + } + } else if params.stringType != 0 { + universalTag = params.stringType } } // Special case for time: UTCTime and GeneralizedTime both map to the // Go type time.Time. - if universalTag == tagUTCTime && t.tag == tagGeneralizedTime { - universalTag = tagGeneralizedTime + if universalTag == TagUTCTime && t.tag == TagGeneralizedTime && t.class == ClassUniversal { + universalTag = TagGeneralizedTime } - expectedClass := classUniversal + if params.set { + universalTag = TagSet + } + + matchAnyClassAndTag := matchAny + expectedClass := ClassUniversal expectedTag := universalTag if !params.explicit && params.tag != nil { - expectedClass = classContextSpecific + expectedClass = ClassContextSpecific expectedTag = *params.tag + matchAnyClassAndTag = false } if !params.explicit && params.application && params.tag != nil { - expectedClass = classApplication + expectedClass = ClassApplication expectedTag = *params.tag + matchAnyClassAndTag = false } // We have unwrapped any explicit tagging at this point. - if t.class != expectedClass || t.tag != expectedTag || t.isCompound != compoundType { + if !matchAnyClassAndTag && (t.class != expectedClass || t.tag != expectedTag) || + (!matchAny && t.isCompound != compoundType) { // Tags don't match. Again, it could be an optional element. ok := setDefaultValue(v, params) if ok { offset = initOffset } else { - err = StructuralError{fmt.Sprintf("tags don't match (%d vs %+v) %+v %s @%d", expectedTag, t, params, fieldType.Name(), offset)} + err = StructuralError{fmt.Sprintf("tags don't match (%d vs %+v) %+v %s @%d", expectedTag, t, params, fieldType.Name(), offset), params.name} } return } if invalidLength(offset, t.length, len(bytes)) { - err = SyntaxError{"data truncated"} + err = SyntaxError{"data truncated", params.name} return } innerBytes := bytes[offset : offset+t.length] @@ -744,8 +894,12 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam // We deal with the structures defined in this package first. switch fieldType { + case rawValueType: + result := RawValue{t.class, t.tag, t.isCompound, innerBytes, bytes[initOffset:offset]} + v.Set(reflect.ValueOf(result)) + return case objectIdentifierType: - newSlice, err1 := parseObjectIdentifier(innerBytes) + newSlice, err1 := parseObjectIdentifier(innerBytes, params.name) v.Set(reflect.MakeSlice(v.Type(), len(newSlice), len(newSlice))) if err1 == nil { reflect.Copy(v, reflect.ValueOf(newSlice)) @@ -753,7 +907,7 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam err = err1 return case bitStringType: - bs, err1 := parseBitString(innerBytes) + bs, err1 := parseBitString(innerBytes, params.name) if err1 == nil { v.Set(reflect.ValueOf(bs)) } @@ -762,7 +916,7 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam case timeType: var time time.Time var err1 error - if universalTag == tagUTCTime { + if universalTag == TagUTCTime { time, err1 = parseUTCTime(innerBytes) } else { time, err1 = parseGeneralizedTime(innerBytes) @@ -773,7 +927,7 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam err = err1 return case enumeratedType: - parsedInt, err1 := parseInt32(innerBytes) + parsedInt, err1 := parseInt32(innerBytes, params.name) if err1 == nil { v.SetInt(int64(parsedInt)) } @@ -783,13 +937,16 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam v.SetBool(true) return case bigIntType: - parsedInt := parseBigInt(innerBytes) - v.Set(reflect.ValueOf(parsedInt)) + parsedInt, err1 := parseBigInt(innerBytes, params.name) + if err1 == nil { + v.Set(reflect.ValueOf(parsedInt)) + } + err = err1 return } switch val := v; val.Kind() { case reflect.Bool: - parsedBool, err1 := parseBool(innerBytes) + parsedBool, err1 := parseBool(innerBytes, params.name) if err1 == nil { val.SetBool(parsedBool) } @@ -797,13 +954,13 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam return case reflect.Int, reflect.Int32, reflect.Int64: if val.Type().Size() == 4 { - parsedInt, err1 := parseInt32(innerBytes) + parsedInt, err1 := parseInt32(innerBytes, params.name) if err1 == nil { val.SetInt(int64(parsedInt)) } err = err1 } else { - parsedInt, err1 := parseInt64(innerBytes) + parsedInt, err1 := parseInt64(innerBytes, params.name) if err1 == nil { val.SetInt(parsedInt) } @@ -814,6 +971,13 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam case reflect.Struct: structType := fieldType + for i := 0; i < structType.NumField(); i++ { + if structType.Field(i).PkgPath != "" { + err = StructuralError{"struct contains unexported fields", structType.Field(i).Name} + return + } + } + if structType.NumField() > 0 && structType.Field(0).Type == rawContentsType { bytes := bytes[initOffset:offset] @@ -826,7 +990,9 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam if i == 0 && field.Type == rawContentsType { continue } - innerOffset, err = parseField(val.Field(i), innerBytes, innerOffset, parseFieldParameters(field.Tag.Get("asn1"))) + innerParams := parseFieldParameters(field.Tag.Get("asn1")) + innerParams.name = field.Name + innerOffset, err = parseField(val.Field(i), innerBytes, innerOffset, innerParams) if err != nil { return } @@ -842,7 +1008,7 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam reflect.Copy(val, reflect.ValueOf(innerBytes)) return } - newSlice, err1 := parseSequenceOf(innerBytes, sliceType, sliceType.Elem()) + newSlice, err1 := parseSequenceOf(innerBytes, sliceType, sliceType.Elem(), params.name) if err1 == nil { val.Set(newSlice) } @@ -851,34 +1017,47 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam case reflect.String: var v string switch universalTag { - case tagPrintableString: - v, err = parsePrintableString(innerBytes) - case tagIA5String: - v, err = parseIA5String(innerBytes) - case tagT61String: + case TagPrintableString: + v, err = parsePrintableString(innerBytes, params.name) + case TagNumericString: + v, err = parseNumericString(innerBytes, params.name) + case TagIA5String: + v, err = parseIA5String(innerBytes, params.name) + case TagT61String: v, err = parseT61String(innerBytes) - case tagUTF8String: + case TagUTF8String: v, err = parseUTF8String(innerBytes) - case tagGeneralString: + case TagGeneralString: // GeneralString is specified in ISO-2022/ECMA-35, // A brief review suggests that it includes structures // that allow the encoding to change midstring and // such. We give up and pass it as an 8-bit string. v, err = parseT61String(innerBytes) default: - err = SyntaxError{fmt.Sprintf("internal error: unknown string type %d", universalTag)} + err = SyntaxError{fmt.Sprintf("internal error: unknown string type %d", universalTag), params.name} } if err == nil { val.SetString(v) } return } - err = StructuralError{"unsupported: " + v.Type().String()} + err = StructuralError{"unsupported: " + v.Type().String(), params.name} return } +// canHaveDefaultValue reports whether k is a Kind that we will set a default +// value for. (A signed integer, essentially.) +func canHaveDefaultValue(k reflect.Kind) bool { + switch k { + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + return true + } + + return false +} + // setDefaultValue is used to install a default value, from a tag string, into -// a Value. It is successful is the field was optional, even if a default value +// a Value. It is successful if the field was optional, even if a default value // wasn't provided or it failed to install it into the Value. func setDefaultValue(v reflect.Value, params fieldParameters) (ok bool) { if !params.optional { @@ -888,9 +1067,8 @@ func setDefaultValue(v reflect.Value, params fieldParameters) (ok bool) { if params.defaultValue == nil { return } - switch val := v; val.Kind() { - case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: - val.SetInt(*params.defaultValue) + if canHaveDefaultValue(v.Kind()) { + v.SetInt(*params.defaultValue) } return } @@ -916,7 +1094,7 @@ func setDefaultValue(v reflect.Value, params fieldParameters) (ok bool) { // // An ASN.1 UTCTIME or GENERALIZEDTIME can be written to a time.Time. // -// An ASN.1 PrintableString or IA5String can be written to a string. +// An ASN.1 PrintableString, IA5String, or NumericString can be written to a string. // // Any of the above ASN.1 values can be written to an interface{}. // The value stored in the interface has the corresponding Go type. @@ -931,13 +1109,20 @@ func setDefaultValue(v reflect.Value, params fieldParameters) (ok bool) { // // The following tags on struct fields have special meaning to Unmarshal: // -// optional marks the field as ASN.1 OPTIONAL -// [explicit] tag:x specifies the ASN.1 tag number; implies ASN.1 CONTEXT SPECIFIC -// default:x sets the default value for optional integer fields +// application specifies that an APPLICATION tag is used +// default:x sets the default value for optional integer fields (only used if optional is also present) +// explicit specifies that an additional, explicit tag wraps the implicit one +// optional marks the field as ASN.1 OPTIONAL +// set causes a SET, rather than a SEQUENCE type to be expected +// tag:x specifies the ASN.1 tag number; implies ASN.1 CONTEXT SPECIFIC // // If the type of the first field of a structure is RawContent then the raw // ASN1 contents of the struct will be stored in it. // +// If the type name of a slice element ends with "SET" then it's treated as if +// the "set" tag was set on it. This can be used with nested slices where a +// struct tag cannot be given. +// // Other ASN.1 types are not supported; if it encounters them, // Unmarshal returns a parse error. func Unmarshal(b []byte, val interface{}) (rest []byte, err error) { diff --git a/vendor/github.com/google/certificate-transparency/go/asn1/common.go b/vendor/github.com/google/certificate-transparency-go/asn1/common.go old mode 100755 new mode 100644 similarity index 68% rename from vendor/github.com/google/certificate-transparency/go/asn1/common.go rename to vendor/github.com/google/certificate-transparency-go/asn1/common.go index 33a117ece19..3c40856bec3 --- a/vendor/github.com/google/certificate-transparency/go/asn1/common.go +++ b/vendor/github.com/google/certificate-transparency-go/asn1/common.go @@ -18,29 +18,33 @@ import ( // Here are some standard tags and classes +// ASN.1 tags represent the type of the following object. const ( - tagBoolean = 1 - tagInteger = 2 - tagBitString = 3 - tagOctetString = 4 - tagOID = 6 - tagEnum = 10 - tagUTF8String = 12 - tagSequence = 16 - tagSet = 17 - tagPrintableString = 19 - tagT61String = 20 - tagIA5String = 22 - tagUTCTime = 23 - tagGeneralizedTime = 24 - tagGeneralString = 27 + TagBoolean = 1 + TagInteger = 2 + TagBitString = 3 + TagOctetString = 4 + TagNull = 5 + TagOID = 6 + TagEnum = 10 + TagUTF8String = 12 + TagSequence = 16 + TagSet = 17 + TagNumericString = 18 + TagPrintableString = 19 + TagT61String = 20 + TagIA5String = 22 + TagUTCTime = 23 + TagGeneralizedTime = 24 + TagGeneralString = 27 ) +// ASN.1 class types represent the namespace of the tag. const ( - classUniversal = 0 - classApplication = 1 - classContextSpecific = 2 - classPrivate = 3 + ClassUniversal = 0 + ClassApplication = 1 + ClassContextSpecific = 2 + ClassPrivate = 3 ) type tagAndLength struct { @@ -74,8 +78,10 @@ type fieldParameters struct { defaultValue *int64 // a default value for INTEGER typed fields (maybe nil). tag *int // the EXPLICIT or IMPLICIT tag (maybe nil). stringType int // the string tag to use when marshaling. + timeType int // the time tag to use when marshaling. set bool // true iff this should be encoded as a SET omitEmpty bool // true iff this should be omitted if empty when marshaling. + name string // name of field for better diagnostics // Invariants: // if explicit is set, tag is non-nil. @@ -94,12 +100,18 @@ func parseFieldParameters(str string) (ret fieldParameters) { if ret.tag == nil { ret.tag = new(int) } + case part == "generalized": + ret.timeType = TagGeneralizedTime + case part == "utc": + ret.timeType = TagUTCTime case part == "ia5": - ret.stringType = tagIA5String + ret.stringType = TagIA5String case part == "printable": - ret.stringType = tagPrintableString + ret.stringType = TagPrintableString + case part == "numeric": + ret.stringType = TagNumericString case part == "utf8": - ret.stringType = tagUTF8String + ret.stringType = TagUTF8String case strings.HasPrefix(part, "default:"): i, err := strconv.ParseInt(part[8:], 10, 64) if err == nil { @@ -128,36 +140,38 @@ func parseFieldParameters(str string) (ret fieldParameters) { // Given a reflected Go type, getUniversalType returns the default tag number // and expected compound flag. -func getUniversalType(t reflect.Type) (tagNumber int, isCompound, ok bool) { +func getUniversalType(t reflect.Type) (matchAny bool, tagNumber int, isCompound, ok bool) { switch t { + case rawValueType: + return true, -1, false, true case objectIdentifierType: - return tagOID, false, true + return false, TagOID, false, true case bitStringType: - return tagBitString, false, true + return false, TagBitString, false, true case timeType: - return tagUTCTime, false, true + return false, TagUTCTime, false, true case enumeratedType: - return tagEnum, false, true + return false, TagEnum, false, true case bigIntType: - return tagInteger, false, true + return false, TagInteger, false, true } switch t.Kind() { case reflect.Bool: - return tagBoolean, false, true + return false, TagBoolean, false, true case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: - return tagInteger, false, true + return false, TagInteger, false, true case reflect.Struct: - return tagSequence, true, true + return false, TagSequence, true, true case reflect.Slice: if t.Elem().Kind() == reflect.Uint8 { - return tagOctetString, false, true + return false, TagOctetString, false, true } if strings.HasSuffix(t.Name(), "SET") { - return tagSet, true, true + return false, TagSet, true, true } - return tagSequence, true, true + return false, TagSequence, true, true case reflect.String: - return tagPrintableString, false, true + return false, TagPrintableString, false, true } - return 0, false, false + return false, 0, false, false } diff --git a/vendor/github.com/google/certificate-transparency-go/asn1/marshal.go b/vendor/github.com/google/certificate-transparency-go/asn1/marshal.go new file mode 100644 index 00000000000..22591282f65 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/asn1/marshal.go @@ -0,0 +1,689 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package asn1 + +import ( + "errors" + "fmt" + "math/big" + "reflect" + "time" + "unicode/utf8" +) + +var ( + byte00Encoder encoder = byteEncoder(0x00) + byteFFEncoder encoder = byteEncoder(0xff) +) + +// encoder represents an ASN.1 element that is waiting to be marshaled. +type encoder interface { + // Len returns the number of bytes needed to marshal this element. + Len() int + // Encode encodes this element by writing Len() bytes to dst. + Encode(dst []byte) +} + +type byteEncoder byte + +func (c byteEncoder) Len() int { + return 1 +} + +func (c byteEncoder) Encode(dst []byte) { + dst[0] = byte(c) +} + +type bytesEncoder []byte + +func (b bytesEncoder) Len() int { + return len(b) +} + +func (b bytesEncoder) Encode(dst []byte) { + if copy(dst, b) != len(b) { + panic("internal error") + } +} + +type stringEncoder string + +func (s stringEncoder) Len() int { + return len(s) +} + +func (s stringEncoder) Encode(dst []byte) { + if copy(dst, s) != len(s) { + panic("internal error") + } +} + +type multiEncoder []encoder + +func (m multiEncoder) Len() int { + var size int + for _, e := range m { + size += e.Len() + } + return size +} + +func (m multiEncoder) Encode(dst []byte) { + var off int + for _, e := range m { + e.Encode(dst[off:]) + off += e.Len() + } +} + +type taggedEncoder struct { + // scratch contains temporary space for encoding the tag and length of + // an element in order to avoid extra allocations. + scratch [8]byte + tag encoder + body encoder +} + +func (t *taggedEncoder) Len() int { + return t.tag.Len() + t.body.Len() +} + +func (t *taggedEncoder) Encode(dst []byte) { + t.tag.Encode(dst) + t.body.Encode(dst[t.tag.Len():]) +} + +type int64Encoder int64 + +func (i int64Encoder) Len() int { + n := 1 + + for i > 127 { + n++ + i >>= 8 + } + + for i < -128 { + n++ + i >>= 8 + } + + return n +} + +func (i int64Encoder) Encode(dst []byte) { + n := i.Len() + + for j := 0; j < n; j++ { + dst[j] = byte(i >> uint((n-1-j)*8)) + } +} + +func base128IntLength(n int64) int { + if n == 0 { + return 1 + } + + l := 0 + for i := n; i > 0; i >>= 7 { + l++ + } + + return l +} + +func appendBase128Int(dst []byte, n int64) []byte { + l := base128IntLength(n) + + for i := l - 1; i >= 0; i-- { + o := byte(n >> uint(i*7)) + o &= 0x7f + if i != 0 { + o |= 0x80 + } + + dst = append(dst, o) + } + + return dst +} + +func makeBigInt(n *big.Int, fieldName string) (encoder, error) { + if n == nil { + return nil, StructuralError{"empty integer", fieldName} + } + + if n.Sign() < 0 { + // A negative number has to be converted to two's-complement + // form. So we'll invert and subtract 1. If the + // most-significant-bit isn't set then we'll need to pad the + // beginning with 0xff in order to keep the number negative. + nMinus1 := new(big.Int).Neg(n) + nMinus1.Sub(nMinus1, bigOne) + bytes := nMinus1.Bytes() + for i := range bytes { + bytes[i] ^= 0xff + } + if len(bytes) == 0 || bytes[0]&0x80 == 0 { + return multiEncoder([]encoder{byteFFEncoder, bytesEncoder(bytes)}), nil + } + return bytesEncoder(bytes), nil + } else if n.Sign() == 0 { + // Zero is written as a single 0 zero rather than no bytes. + return byte00Encoder, nil + } else { + bytes := n.Bytes() + if len(bytes) > 0 && bytes[0]&0x80 != 0 { + // We'll have to pad this with 0x00 in order to stop it + // looking like a negative number. + return multiEncoder([]encoder{byte00Encoder, bytesEncoder(bytes)}), nil + } + return bytesEncoder(bytes), nil + } +} + +func appendLength(dst []byte, i int) []byte { + n := lengthLength(i) + + for ; n > 0; n-- { + dst = append(dst, byte(i>>uint((n-1)*8))) + } + + return dst +} + +func lengthLength(i int) (numBytes int) { + numBytes = 1 + for i > 255 { + numBytes++ + i >>= 8 + } + return +} + +func appendTagAndLength(dst []byte, t tagAndLength) []byte { + b := uint8(t.class) << 6 + if t.isCompound { + b |= 0x20 + } + if t.tag >= 31 { + b |= 0x1f + dst = append(dst, b) + dst = appendBase128Int(dst, int64(t.tag)) + } else { + b |= uint8(t.tag) + dst = append(dst, b) + } + + if t.length >= 128 { + l := lengthLength(t.length) + dst = append(dst, 0x80|byte(l)) + dst = appendLength(dst, t.length) + } else { + dst = append(dst, byte(t.length)) + } + + return dst +} + +type bitStringEncoder BitString + +func (b bitStringEncoder) Len() int { + return len(b.Bytes) + 1 +} + +func (b bitStringEncoder) Encode(dst []byte) { + dst[0] = byte((8 - b.BitLength%8) % 8) + if copy(dst[1:], b.Bytes) != len(b.Bytes) { + panic("internal error") + } +} + +type oidEncoder []int + +func (oid oidEncoder) Len() int { + l := base128IntLength(int64(oid[0]*40 + oid[1])) + for i := 2; i < len(oid); i++ { + l += base128IntLength(int64(oid[i])) + } + return l +} + +func (oid oidEncoder) Encode(dst []byte) { + dst = appendBase128Int(dst[:0], int64(oid[0]*40+oid[1])) + for i := 2; i < len(oid); i++ { + dst = appendBase128Int(dst, int64(oid[i])) + } +} + +func makeObjectIdentifier(oid []int, fieldName string) (e encoder, err error) { + if len(oid) < 2 || oid[0] > 2 || (oid[0] < 2 && oid[1] >= 40) { + return nil, StructuralError{"invalid object identifier", fieldName} + } + + return oidEncoder(oid), nil +} + +func makePrintableString(s, fieldName string) (e encoder, err error) { + for i := 0; i < len(s); i++ { + // The asterisk is often used in PrintableString, even though + // it is invalid. If a PrintableString was specifically + // requested then the asterisk is permitted by this code. + // Ampersand is allowed in parsing due a handful of CA + // certificates, however when making new certificates + // it is rejected. + if !isPrintable(s[i], allowAsterisk, rejectAmpersand) { + return nil, StructuralError{"PrintableString contains invalid character", fieldName} + } + } + + return stringEncoder(s), nil +} + +func makeIA5String(s, fieldName string) (e encoder, err error) { + for i := 0; i < len(s); i++ { + if s[i] > 127 { + return nil, StructuralError{"IA5String contains invalid character", fieldName} + } + } + + return stringEncoder(s), nil +} + +func makeNumericString(s string, fieldName string) (e encoder, err error) { + for i := 0; i < len(s); i++ { + if !isNumeric(s[i]) { + return nil, StructuralError{"NumericString contains invalid character", fieldName} + } + } + + return stringEncoder(s), nil +} + +func makeUTF8String(s string) encoder { + return stringEncoder(s) +} + +func appendTwoDigits(dst []byte, v int) []byte { + return append(dst, byte('0'+(v/10)%10), byte('0'+v%10)) +} + +func appendFourDigits(dst []byte, v int) []byte { + var bytes [4]byte + for i := range bytes { + bytes[3-i] = '0' + byte(v%10) + v /= 10 + } + return append(dst, bytes[:]...) +} + +func outsideUTCRange(t time.Time) bool { + year := t.Year() + return year < 1950 || year >= 2050 +} + +func makeUTCTime(t time.Time, fieldName string) (e encoder, err error) { + dst := make([]byte, 0, 18) + + dst, err = appendUTCTime(dst, t, fieldName) + if err != nil { + return nil, err + } + + return bytesEncoder(dst), nil +} + +func makeGeneralizedTime(t time.Time, fieldName string) (e encoder, err error) { + dst := make([]byte, 0, 20) + + dst, err = appendGeneralizedTime(dst, t, fieldName) + if err != nil { + return nil, err + } + + return bytesEncoder(dst), nil +} + +func appendUTCTime(dst []byte, t time.Time, fieldName string) (ret []byte, err error) { + year := t.Year() + + switch { + case 1950 <= year && year < 2000: + dst = appendTwoDigits(dst, year-1900) + case 2000 <= year && year < 2050: + dst = appendTwoDigits(dst, year-2000) + default: + return nil, StructuralError{"cannot represent time as UTCTime", fieldName} + } + + return appendTimeCommon(dst, t), nil +} + +func appendGeneralizedTime(dst []byte, t time.Time, fieldName string) (ret []byte, err error) { + year := t.Year() + if year < 0 || year > 9999 { + return nil, StructuralError{"cannot represent time as GeneralizedTime", fieldName} + } + + dst = appendFourDigits(dst, year) + + return appendTimeCommon(dst, t), nil +} + +func appendTimeCommon(dst []byte, t time.Time) []byte { + _, month, day := t.Date() + + dst = appendTwoDigits(dst, int(month)) + dst = appendTwoDigits(dst, day) + + hour, min, sec := t.Clock() + + dst = appendTwoDigits(dst, hour) + dst = appendTwoDigits(dst, min) + dst = appendTwoDigits(dst, sec) + + _, offset := t.Zone() + + switch { + case offset/60 == 0: + return append(dst, 'Z') + case offset > 0: + dst = append(dst, '+') + case offset < 0: + dst = append(dst, '-') + } + + offsetMinutes := offset / 60 + if offsetMinutes < 0 { + offsetMinutes = -offsetMinutes + } + + dst = appendTwoDigits(dst, offsetMinutes/60) + dst = appendTwoDigits(dst, offsetMinutes%60) + + return dst +} + +func stripTagAndLength(in []byte) []byte { + _, offset, err := parseTagAndLength(in, 0, "") + if err != nil { + return in + } + return in[offset:] +} + +func makeBody(value reflect.Value, params fieldParameters) (e encoder, err error) { + switch value.Type() { + case flagType: + return bytesEncoder(nil), nil + case timeType: + t := value.Interface().(time.Time) + if params.timeType == TagGeneralizedTime || outsideUTCRange(t) { + return makeGeneralizedTime(t, params.name) + } + return makeUTCTime(t, params.name) + case bitStringType: + return bitStringEncoder(value.Interface().(BitString)), nil + case objectIdentifierType: + return makeObjectIdentifier(value.Interface().(ObjectIdentifier), params.name) + case bigIntType: + return makeBigInt(value.Interface().(*big.Int), params.name) + } + + switch v := value; v.Kind() { + case reflect.Bool: + if v.Bool() { + return byteFFEncoder, nil + } + return byte00Encoder, nil + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + return int64Encoder(v.Int()), nil + case reflect.Struct: + t := v.Type() + + for i := 0; i < t.NumField(); i++ { + if t.Field(i).PkgPath != "" { + return nil, StructuralError{"struct contains unexported fields", t.Field(i).Name} + } + } + + startingField := 0 + + n := t.NumField() + if n == 0 { + return bytesEncoder(nil), nil + } + + // If the first element of the structure is a non-empty + // RawContents, then we don't bother serializing the rest. + if t.Field(0).Type == rawContentsType { + s := v.Field(0) + if s.Len() > 0 { + bytes := s.Bytes() + /* The RawContents will contain the tag and + * length fields but we'll also be writing + * those ourselves, so we strip them out of + * bytes */ + return bytesEncoder(stripTagAndLength(bytes)), nil + } + + startingField = 1 + } + + switch n1 := n - startingField; n1 { + case 0: + return bytesEncoder(nil), nil + case 1: + return makeField(v.Field(startingField), parseFieldParameters(t.Field(startingField).Tag.Get("asn1"))) + default: + m := make([]encoder, n1) + for i := 0; i < n1; i++ { + m[i], err = makeField(v.Field(i+startingField), parseFieldParameters(t.Field(i+startingField).Tag.Get("asn1"))) + if err != nil { + return nil, err + } + } + + return multiEncoder(m), nil + } + case reflect.Slice: + sliceType := v.Type() + if sliceType.Elem().Kind() == reflect.Uint8 { + return bytesEncoder(v.Bytes()), nil + } + + var fp fieldParameters + + switch l := v.Len(); l { + case 0: + return bytesEncoder(nil), nil + case 1: + return makeField(v.Index(0), fp) + default: + m := make([]encoder, l) + + for i := 0; i < l; i++ { + m[i], err = makeField(v.Index(i), fp) + if err != nil { + return nil, err + } + } + + return multiEncoder(m), nil + } + case reflect.String: + switch params.stringType { + case TagIA5String: + return makeIA5String(v.String(), params.name) + case TagPrintableString: + return makePrintableString(v.String(), params.name) + case TagNumericString: + return makeNumericString(v.String(), params.name) + default: + return makeUTF8String(v.String()), nil + } + } + + return nil, StructuralError{"unknown Go type", params.name} +} + +func makeField(v reflect.Value, params fieldParameters) (e encoder, err error) { + if !v.IsValid() { + return nil, fmt.Errorf("asn1: cannot marshal nil value") + } + // If the field is an interface{} then recurse into it. + if v.Kind() == reflect.Interface && v.Type().NumMethod() == 0 { + return makeField(v.Elem(), params) + } + + if v.Kind() == reflect.Slice && v.Len() == 0 && params.omitEmpty { + return bytesEncoder(nil), nil + } + + if params.optional && params.defaultValue != nil && canHaveDefaultValue(v.Kind()) { + defaultValue := reflect.New(v.Type()).Elem() + defaultValue.SetInt(*params.defaultValue) + + if reflect.DeepEqual(v.Interface(), defaultValue.Interface()) { + return bytesEncoder(nil), nil + } + } + + // If no default value is given then the zero value for the type is + // assumed to be the default value. This isn't obviously the correct + // behavior, but it's what Go has traditionally done. + if params.optional && params.defaultValue == nil { + if reflect.DeepEqual(v.Interface(), reflect.Zero(v.Type()).Interface()) { + return bytesEncoder(nil), nil + } + } + + if v.Type() == rawValueType { + rv := v.Interface().(RawValue) + if len(rv.FullBytes) != 0 { + return bytesEncoder(rv.FullBytes), nil + } + + t := new(taggedEncoder) + + t.tag = bytesEncoder(appendTagAndLength(t.scratch[:0], tagAndLength{rv.Class, rv.Tag, len(rv.Bytes), rv.IsCompound})) + t.body = bytesEncoder(rv.Bytes) + + return t, nil + } + + matchAny, tag, isCompound, ok := getUniversalType(v.Type()) + if !ok || matchAny { + return nil, StructuralError{fmt.Sprintf("unknown Go type: %v", v.Type()), params.name} + } + + if params.timeType != 0 && tag != TagUTCTime { + return nil, StructuralError{"explicit time type given to non-time member", params.name} + } + + if params.stringType != 0 && tag != TagPrintableString { + return nil, StructuralError{"explicit string type given to non-string member", params.name} + } + + switch tag { + case TagPrintableString: + if params.stringType == 0 { + // This is a string without an explicit string type. We'll use + // a PrintableString if the character set in the string is + // sufficiently limited, otherwise we'll use a UTF8String. + for _, r := range v.String() { + if r >= utf8.RuneSelf || !isPrintable(byte(r), rejectAsterisk, rejectAmpersand) { + if !utf8.ValidString(v.String()) { + return nil, errors.New("asn1: string not valid UTF-8") + } + tag = TagUTF8String + break + } + } + } else { + tag = params.stringType + } + case TagUTCTime: + if params.timeType == TagGeneralizedTime || outsideUTCRange(v.Interface().(time.Time)) { + tag = TagGeneralizedTime + } + } + + if params.set { + if tag != TagSequence { + return nil, StructuralError{"non sequence tagged as set", params.name} + } + tag = TagSet + } + + t := new(taggedEncoder) + + t.body, err = makeBody(v, params) + if err != nil { + return nil, err + } + + bodyLen := t.body.Len() + + class := ClassUniversal + if params.tag != nil { + if params.application { + class = ClassApplication + } else { + class = ClassContextSpecific + } + + if params.explicit { + t.tag = bytesEncoder(appendTagAndLength(t.scratch[:0], tagAndLength{ClassUniversal, tag, bodyLen, isCompound})) + + tt := new(taggedEncoder) + + tt.body = t + + tt.tag = bytesEncoder(appendTagAndLength(tt.scratch[:0], tagAndLength{ + class: class, + tag: *params.tag, + length: bodyLen + t.tag.Len(), + isCompound: true, + })) + + return tt, nil + } + + // implicit tag. + tag = *params.tag + } + + t.tag = bytesEncoder(appendTagAndLength(t.scratch[:0], tagAndLength{class, tag, bodyLen, isCompound})) + + return t, nil +} + +// Marshal returns the ASN.1 encoding of val. +// +// In addition to the struct tags recognised by Unmarshal, the following can be +// used: +// +// ia5: causes strings to be marshaled as ASN.1, IA5String values +// omitempty: causes empty slices to be skipped +// printable: causes strings to be marshaled as ASN.1, PrintableString values +// utf8: causes strings to be marshaled as ASN.1, UTF8String values +// utc: causes time.Time to be marshaled as ASN.1, UTCTime values +// generalized: causes time.Time to be marshaled as ASN.1, GeneralizedTime values +func Marshal(val interface{}) ([]byte, error) { + return MarshalWithParams(val, "") +} + +// MarshalWithParams allows field parameters to be specified for the +// top-level element. The form of the params is the same as the field tags. +func MarshalWithParams(val interface{}, params string) ([]byte, error) { + e, err := makeField(reflect.ValueOf(val), parseFieldParameters(params)) + if err != nil { + return nil, err + } + b := make([]byte, e.Len()) + e.Encode(b) + return b, nil +} diff --git a/vendor/github.com/google/certificate-transparency-go/client/BUILD b/vendor/github.com/google/certificate-transparency-go/client/BUILD new file mode 100644 index 00000000000..5c9c0e331a0 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/client/BUILD @@ -0,0 +1,38 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +go_library( + name = "go_default_library", + srcs = [ + "getentries.go", + "logclient.go", + "multilog.go", + ], + importpath = "github.com/google/certificate-transparency-go/client", + visibility = ["//visibility:public"], + deps = [ + "//vendor/github.com/golang/protobuf/proto:go_default_library", + "//vendor/github.com/golang/protobuf/ptypes:go_default_library", + "//vendor/github.com/google/certificate-transparency-go:go_default_library", + "//vendor/github.com/google/certificate-transparency-go/client/configpb:go_default_library", + "//vendor/github.com/google/certificate-transparency-go/jsonclient:go_default_library", + "//vendor/github.com/google/certificate-transparency-go/tls:go_default_library", + "//vendor/github.com/google/certificate-transparency-go/x509:go_default_library", + ], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [ + ":package-srcs", + "//vendor/github.com/google/certificate-transparency-go/client/configpb:all-srcs", + ], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/vendor/github.com/google/certificate-transparency-go/client/configpb/BUILD b/vendor/github.com/google/certificate-transparency-go/client/configpb/BUILD new file mode 100644 index 00000000000..62bef316e05 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/client/configpb/BUILD @@ -0,0 +1,35 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +filegroup( + name = "go_default_library_protos", + srcs = ["multilog.proto"], + visibility = ["//visibility:public"], +) + +go_library( + name = "go_default_library", + srcs = [ + "gen.go", + "multilog.pb.go", + ], + importpath = "github.com/google/certificate-transparency-go/client/configpb", + visibility = ["//visibility:public"], + deps = [ + "//vendor/github.com/golang/protobuf/proto:go_default_library", + "//vendor/github.com/golang/protobuf/ptypes/timestamp:go_default_library", + ], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [":package-srcs"], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/vendor/github.com/google/certificate-transparency-go/client/configpb/gen.go b/vendor/github.com/google/certificate-transparency-go/client/configpb/gen.go new file mode 100644 index 00000000000..1d0c9a7ffdd --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/client/configpb/gen.go @@ -0,0 +1,17 @@ +// Copyright 2017 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package configpb + +//go:generate protoc -I=. -I=$GOPATH/src --go_out=:. multilog.proto diff --git a/vendor/github.com/google/certificate-transparency-go/client/configpb/multilog.pb.go b/vendor/github.com/google/certificate-transparency-go/client/configpb/multilog.pb.go new file mode 100644 index 00000000000..889fbe25939 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/client/configpb/multilog.pb.go @@ -0,0 +1,124 @@ +// Code generated by protoc-gen-go. DO NOT EDIT. +// source: multilog.proto + +/* +Package configpb is a generated protocol buffer package. + +It is generated from these files: + multilog.proto + +It has these top-level messages: + TemporalLogConfig + LogShardConfig +*/ +package configpb + +import proto "github.com/golang/protobuf/proto" +import fmt "fmt" +import math "math" +import google_protobuf "github.com/golang/protobuf/ptypes/timestamp" + +// Reference imports to suppress errors if they are not otherwise used. +var _ = proto.Marshal +var _ = fmt.Errorf +var _ = math.Inf + +// This is a compile-time assertion to ensure that this generated file +// is compatible with the proto package it is being compiled against. +// A compilation error at this line likely means your copy of the +// proto package needs to be updated. +const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package + +// TemporalLogConfig is a set of LogShardConfig messages, whose +// time limits should be contiguous. +type TemporalLogConfig struct { + Shard []*LogShardConfig `protobuf:"bytes,1,rep,name=shard" json:"shard,omitempty"` +} + +func (m *TemporalLogConfig) Reset() { *m = TemporalLogConfig{} } +func (m *TemporalLogConfig) String() string { return proto.CompactTextString(m) } +func (*TemporalLogConfig) ProtoMessage() {} +func (*TemporalLogConfig) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} } + +func (m *TemporalLogConfig) GetShard() []*LogShardConfig { + if m != nil { + return m.Shard + } + return nil +} + +// LogShardConfig describes the acceptable date range for a single shard of a temporal +// log. +type LogShardConfig struct { + Uri string `protobuf:"bytes,1,opt,name=uri" json:"uri,omitempty"` + // The log's public key in DER-encoded PKIX form. + PublicKeyDer []byte `protobuf:"bytes,2,opt,name=public_key_der,json=publicKeyDer,proto3" json:"public_key_der,omitempty"` + // not_after_start defines the start of the range of acceptable NotAfter + // values, inclusive. + // Leaving this unset implies no lower bound to the range. + NotAfterStart *google_protobuf.Timestamp `protobuf:"bytes,3,opt,name=not_after_start,json=notAfterStart" json:"not_after_start,omitempty"` + // not_after_limit defines the end of the range of acceptable NotAfter values, + // exclusive. + // Leaving this unset implies no upper bound to the range. + NotAfterLimit *google_protobuf.Timestamp `protobuf:"bytes,4,opt,name=not_after_limit,json=notAfterLimit" json:"not_after_limit,omitempty"` +} + +func (m *LogShardConfig) Reset() { *m = LogShardConfig{} } +func (m *LogShardConfig) String() string { return proto.CompactTextString(m) } +func (*LogShardConfig) ProtoMessage() {} +func (*LogShardConfig) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} } + +func (m *LogShardConfig) GetUri() string { + if m != nil { + return m.Uri + } + return "" +} + +func (m *LogShardConfig) GetPublicKeyDer() []byte { + if m != nil { + return m.PublicKeyDer + } + return nil +} + +func (m *LogShardConfig) GetNotAfterStart() *google_protobuf.Timestamp { + if m != nil { + return m.NotAfterStart + } + return nil +} + +func (m *LogShardConfig) GetNotAfterLimit() *google_protobuf.Timestamp { + if m != nil { + return m.NotAfterLimit + } + return nil +} + +func init() { + proto.RegisterType((*TemporalLogConfig)(nil), "configpb.TemporalLogConfig") + proto.RegisterType((*LogShardConfig)(nil), "configpb.LogShardConfig") +} + +func init() { proto.RegisterFile("multilog.proto", fileDescriptor0) } + +var fileDescriptor0 = []byte{ + // 241 bytes of a gzipped FileDescriptorProto + 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x8f, 0xb1, 0x4e, 0xc3, 0x30, + 0x14, 0x45, 0x65, 0x02, 0x08, 0xdc, 0x12, 0xc0, 0x93, 0xd5, 0x85, 0xa8, 0x62, 0xc8, 0xe4, 0x4a, + 0xe5, 0x0b, 0xa0, 0x6c, 0x64, 0x4a, 0xbb, 0x47, 0x4e, 0xeb, 0x18, 0x0b, 0x3b, 0xcf, 0x72, 0x5e, + 0x86, 0xfe, 0x25, 0x9f, 0x84, 0x1c, 0x2b, 0x43, 0x37, 0xb6, 0xa7, 0x77, 0xcf, 0xb9, 0xd2, 0xa5, + 0xb9, 0x1b, 0x2d, 0x1a, 0x0b, 0x5a, 0xf8, 0x00, 0x08, 0xec, 0xee, 0x08, 0x7d, 0x67, 0xb4, 0x6f, + 0x57, 0x2f, 0x1a, 0x40, 0x5b, 0xb5, 0x99, 0xfe, 0xed, 0xd8, 0x6d, 0xd0, 0x38, 0x35, 0xa0, 0x74, + 0x3e, 0xa1, 0xeb, 0x1d, 0x7d, 0x3e, 0x28, 0xe7, 0x21, 0x48, 0x5b, 0x81, 0xde, 0x4d, 0x1e, 0x13, + 0xf4, 0x66, 0xf8, 0x96, 0xe1, 0xc4, 0x49, 0x91, 0x95, 0x8b, 0x2d, 0x17, 0x73, 0x9f, 0xa8, 0x40, + 0xef, 0x63, 0x92, 0xc0, 0x3a, 0x61, 0xeb, 0x5f, 0x42, 0xf3, 0xcb, 0x84, 0x3d, 0xd1, 0x6c, 0x0c, + 0x86, 0x93, 0x82, 0x94, 0xf7, 0x75, 0x3c, 0xd9, 0x2b, 0xcd, 0xfd, 0xd8, 0x5a, 0x73, 0x6c, 0x7e, + 0xd4, 0xb9, 0x39, 0xa9, 0xc0, 0xaf, 0x0a, 0x52, 0x2e, 0xeb, 0x65, 0xfa, 0x7e, 0xa9, 0xf3, 0xa7, + 0x0a, 0xec, 0x83, 0x3e, 0xf6, 0x80, 0x8d, 0xec, 0x50, 0x85, 0x66, 0x40, 0x19, 0x90, 0x67, 0x05, + 0x29, 0x17, 0xdb, 0x95, 0x48, 0x53, 0xc4, 0x3c, 0x45, 0x1c, 0xe6, 0x29, 0xf5, 0x43, 0x0f, 0xf8, + 0x1e, 0x8d, 0x7d, 0x14, 0x2e, 0x3b, 0xac, 0x71, 0x06, 0xf9, 0xf5, 0xff, 0x3b, 0xaa, 0x28, 0xb4, + 0xb7, 0x13, 0xf2, 0xf6, 0x17, 0x00, 0x00, 0xff, 0xff, 0xf8, 0xd9, 0x50, 0x5b, 0x5b, 0x01, 0x00, + 0x00, +} diff --git a/vendor/github.com/google/certificate-transparency-go/client/configpb/multilog.proto b/vendor/github.com/google/certificate-transparency-go/client/configpb/multilog.proto new file mode 100644 index 00000000000..b396a90a9c5 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/client/configpb/multilog.proto @@ -0,0 +1,43 @@ +// Copyright 2017 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +syntax = "proto3"; + +package configpb; + +import "google/protobuf/timestamp.proto"; + +// TemporalLogConfig is a set of LogShardConfig messages, whose +// time limits should be contiguous. +message TemporalLogConfig { + repeated LogShardConfig shard = 1; +} + +// LogShardConfig describes the acceptable date range for a single shard of a temporal +// log. +message LogShardConfig { + string uri = 1; + + // The log's public key in DER-encoded PKIX form. + bytes public_key_der = 2; + + // not_after_start defines the start of the range of acceptable NotAfter + // values, inclusive. + // Leaving this unset implies no lower bound to the range. + google.protobuf.Timestamp not_after_start = 3; + // not_after_limit defines the end of the range of acceptable NotAfter values, + // exclusive. + // Leaving this unset implies no upper bound to the range. + google.protobuf.Timestamp not_after_limit = 4; +} diff --git a/vendor/github.com/google/certificate-transparency-go/client/getentries.go b/vendor/github.com/google/certificate-transparency-go/client/getentries.go new file mode 100644 index 00000000000..e2cde55c22a --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/client/getentries.go @@ -0,0 +1,75 @@ +// Copyright 2016 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package client + +import ( + "context" + "errors" + "strconv" + + ct "github.com/google/certificate-transparency-go" + "github.com/google/certificate-transparency-go/x509" +) + +// GetRawEntries exposes the /ct/v1/get-entries result with only the JSON parsing done. +func (c *LogClient) GetRawEntries(ctx context.Context, start, end int64) (*ct.GetEntriesResponse, error) { + if end < 0 { + return nil, errors.New("end should be >= 0") + } + if end < start { + return nil, errors.New("start should be <= end") + } + + params := map[string]string{ + "start": strconv.FormatInt(start, 10), + "end": strconv.FormatInt(end, 10), + } + if ctx == nil { + ctx = context.TODO() + } + + var resp ct.GetEntriesResponse + httpRsp, body, err := c.GetAndParse(ctx, ct.GetEntriesPath, params, &resp) + if err != nil { + if httpRsp != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } + return nil, err + } + + return &resp, nil +} + +// GetEntries attempts to retrieve the entries in the sequence [start, end] from the CT log server +// (RFC6962 s4.6) as parsed [pre-]certificates for convenience, held in a slice of ct.LogEntry structures. +// However, this does mean that any certificate parsing failures will cause a failure of the whole +// retrieval operation; for more robust retrieval of parsed certificates, use GetRawEntries() and invoke +// ct.LogEntryFromLeaf() on each individual entry. +func (c *LogClient) GetEntries(ctx context.Context, start, end int64) ([]ct.LogEntry, error) { + resp, err := c.GetRawEntries(ctx, start, end) + if err != nil { + return nil, err + } + entries := make([]ct.LogEntry, len(resp.Entries)) + for i, entry := range resp.Entries { + index := start + int64(i) + logEntry, err := ct.LogEntryFromLeaf(index, &entry) + if _, ok := err.(x509.NonFatalErrors); !ok && err != nil { + return nil, err + } + entries[i] = *logEntry + } + return entries, nil +} diff --git a/vendor/github.com/google/certificate-transparency-go/client/logclient.go b/vendor/github.com/google/certificate-transparency-go/client/logclient.go new file mode 100644 index 00000000000..b1031cf8a2c --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/client/logclient.go @@ -0,0 +1,283 @@ +// Copyright 2014 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package client is a CT log client implementation and contains types and code +// for interacting with RFC6962-compliant CT Log instances. +// See http://tools.ietf.org/html/rfc6962 for details +package client + +import ( + "context" + "crypto/sha256" + "encoding/base64" + "fmt" + "net/http" + "strconv" + + ct "github.com/google/certificate-transparency-go" + "github.com/google/certificate-transparency-go/jsonclient" + "github.com/google/certificate-transparency-go/tls" +) + +// LogClient represents a client for a given CT Log instance +type LogClient struct { + jsonclient.JSONClient +} + +// New constructs a new LogClient instance. +// |uri| is the base URI of the CT log instance to interact with, e.g. +// http://ct.googleapis.com/pilot +// |hc| is the underlying client to be used for HTTP requests to the CT log. +// |opts| can be used to provide a customer logger interface and a public key +// for signature verification. +func New(uri string, hc *http.Client, opts jsonclient.Options) (*LogClient, error) { + logClient, err := jsonclient.New(uri, hc, opts) + if err != nil { + return nil, err + } + return &LogClient{*logClient}, err +} + +// RspError represents an error that occurred when processing a response from a server, +// and also includes key details from the http.Response that triggered the error. +type RspError struct { + Err error + StatusCode int + Body []byte +} + +// Error formats the RspError instance, focusing on the error. +func (e RspError) Error() string { + return e.Err.Error() +} + +// Attempts to add |chain| to the log, using the api end-point specified by +// |path|. If provided context expires before submission is complete an +// error will be returned. +func (c *LogClient) addChainWithRetry(ctx context.Context, ctype ct.LogEntryType, path string, chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) { + var resp ct.AddChainResponse + var req ct.AddChainRequest + for _, link := range chain { + req.Chain = append(req.Chain, link.Data) + } + + httpRsp, body, err := c.PostAndParseWithRetry(ctx, path, &req, &resp) + if err != nil { + if httpRsp != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } + return nil, err + } + + var ds ct.DigitallySigned + if rest, err := tls.Unmarshal(resp.Signature, &ds); err != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } else if len(rest) > 0 { + return nil, RspError{ + Err: fmt.Errorf("trailing data (%d bytes) after DigitallySigned", len(rest)), + StatusCode: httpRsp.StatusCode, + Body: body, + } + } + + exts, err := base64.StdEncoding.DecodeString(resp.Extensions) + if err != nil { + return nil, RspError{ + Err: fmt.Errorf("invalid base64 data in Extensions (%q): %v", resp.Extensions, err), + StatusCode: httpRsp.StatusCode, + Body: body, + } + } + + var logID ct.LogID + copy(logID.KeyID[:], resp.ID) + sct := &ct.SignedCertificateTimestamp{ + SCTVersion: resp.SCTVersion, + LogID: logID, + Timestamp: resp.Timestamp, + Extensions: ct.CTExtensions(exts), + Signature: ds, + } + if err := c.VerifySCTSignature(*sct, ctype, chain); err != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } + return sct, nil +} + +// AddChain adds the (DER represented) X509 |chain| to the log. +func (c *LogClient) AddChain(ctx context.Context, chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) { + return c.addChainWithRetry(ctx, ct.X509LogEntryType, ct.AddChainPath, chain) +} + +// AddPreChain adds the (DER represented) Precertificate |chain| to the log. +func (c *LogClient) AddPreChain(ctx context.Context, chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) { + return c.addChainWithRetry(ctx, ct.PrecertLogEntryType, ct.AddPreChainPath, chain) +} + +// AddJSON submits arbitrary data to to XJSON server. +func (c *LogClient) AddJSON(ctx context.Context, data interface{}) (*ct.SignedCertificateTimestamp, error) { + req := ct.AddJSONRequest{Data: data} + var resp ct.AddChainResponse + httpRsp, body, err := c.PostAndParse(ctx, ct.AddJSONPath, &req, &resp) + if err != nil { + if httpRsp != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } + return nil, err + } + var ds ct.DigitallySigned + if rest, err := tls.Unmarshal(resp.Signature, &ds); err != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } else if len(rest) > 0 { + return nil, RspError{ + Err: fmt.Errorf("trailing data (%d bytes) after DigitallySigned", len(rest)), + StatusCode: httpRsp.StatusCode, + Body: body, + } + } + var logID ct.LogID + copy(logID.KeyID[:], resp.ID) + return &ct.SignedCertificateTimestamp{ + SCTVersion: resp.SCTVersion, + LogID: logID, + Timestamp: resp.Timestamp, + Extensions: ct.CTExtensions(resp.Extensions), + Signature: ds, + }, nil +} + +// GetSTH retrieves the current STH from the log. +// Returns a populated SignedTreeHead, or a non-nil error (which may be of type +// RspError if a raw http.Response is available). +func (c *LogClient) GetSTH(ctx context.Context) (*ct.SignedTreeHead, error) { + var resp ct.GetSTHResponse + httpRsp, body, err := c.GetAndParse(ctx, ct.GetSTHPath, nil, &resp) + if err != nil { + if httpRsp != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } + return nil, err + } + sth := ct.SignedTreeHead{ + TreeSize: resp.TreeSize, + Timestamp: resp.Timestamp, + } + + if len(resp.SHA256RootHash) != sha256.Size { + return nil, RspError{ + Err: fmt.Errorf("sha256_root_hash is invalid length, expected %d got %d", sha256.Size, len(resp.SHA256RootHash)), + StatusCode: httpRsp.StatusCode, + Body: body, + } + } + copy(sth.SHA256RootHash[:], resp.SHA256RootHash) + + var ds ct.DigitallySigned + if rest, err := tls.Unmarshal(resp.TreeHeadSignature, &ds); err != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } else if len(rest) > 0 { + return nil, RspError{ + Err: fmt.Errorf("trailing data (%d bytes) after DigitallySigned", len(rest)), + StatusCode: httpRsp.StatusCode, + Body: body, + } + } + sth.TreeHeadSignature = ds + if err := c.VerifySTHSignature(sth); err != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } + return &sth, nil +} + +// VerifySTHSignature checks the signature in sth, returning any error encountered or nil if verification is +// successful. +func (c *LogClient) VerifySTHSignature(sth ct.SignedTreeHead) error { + if c.Verifier == nil { + // Can't verify signatures without a verifier + return nil + } + return c.Verifier.VerifySTHSignature(sth) +} + +// VerifySCTSignature checks the signature in sct for the given LogEntryType, with associated certificate chain. +func (c *LogClient) VerifySCTSignature(sct ct.SignedCertificateTimestamp, ctype ct.LogEntryType, certData []ct.ASN1Cert) error { + if c.Verifier == nil { + // Can't verify signatures without a verifier + return nil + } + leaf, err := ct.MerkleTreeLeafFromRawChain(certData, ctype, sct.Timestamp) + if err != nil { + return fmt.Errorf("failed to build MerkleTreeLeaf: %v", err) + } + entry := ct.LogEntry{Leaf: *leaf} + return c.Verifier.VerifySCTSignature(sct, entry) +} + +// GetSTHConsistency retrieves the consistency proof between two snapshots. +func (c *LogClient) GetSTHConsistency(ctx context.Context, first, second uint64) ([][]byte, error) { + base10 := 10 + params := map[string]string{ + "first": strconv.FormatUint(first, base10), + "second": strconv.FormatUint(second, base10), + } + var resp ct.GetSTHConsistencyResponse + httpRsp, body, err := c.GetAndParse(ctx, ct.GetSTHConsistencyPath, params, &resp) + if err != nil { + if httpRsp != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } + return nil, err + } + return resp.Consistency, nil +} + +// GetProofByHash returns an audit path for the hash of an SCT. +func (c *LogClient) GetProofByHash(ctx context.Context, hash []byte, treeSize uint64) (*ct.GetProofByHashResponse, error) { + b64Hash := base64.StdEncoding.EncodeToString(hash) + base10 := 10 + params := map[string]string{ + "tree_size": strconv.FormatUint(treeSize, base10), + "hash": b64Hash, + } + var resp ct.GetProofByHashResponse + httpRsp, body, err := c.GetAndParse(ctx, ct.GetProofByHashPath, params, &resp) + if err != nil { + if httpRsp != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } + return nil, err + } + return &resp, nil +} + +// GetAcceptedRoots retrieves the set of acceptable root certificates for a log. +func (c *LogClient) GetAcceptedRoots(ctx context.Context) ([]ct.ASN1Cert, error) { + var resp ct.GetRootsResponse + httpRsp, body, err := c.GetAndParse(ctx, ct.GetRootsPath, nil, &resp) + if err != nil { + if httpRsp != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } + return nil, err + } + var roots []ct.ASN1Cert + for _, cert64 := range resp.Certificates { + cert, err := base64.StdEncoding.DecodeString(cert64) + if err != nil { + return nil, RspError{Err: err, StatusCode: httpRsp.StatusCode, Body: body} + } + roots = append(roots, ct.ASN1Cert{Data: cert}) + } + return roots, nil +} diff --git a/vendor/github.com/google/certificate-transparency-go/client/multilog.go b/vendor/github.com/google/certificate-transparency-go/client/multilog.go new file mode 100644 index 00000000000..a4860b6d205 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/client/multilog.go @@ -0,0 +1,221 @@ +// Copyright 2017 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package client + +import ( + "context" + "crypto/sha256" + "errors" + "fmt" + "io/ioutil" + "net/http" + "time" + + "github.com/golang/protobuf/proto" + "github.com/golang/protobuf/ptypes" + ct "github.com/google/certificate-transparency-go" + "github.com/google/certificate-transparency-go/client/configpb" + "github.com/google/certificate-transparency-go/jsonclient" + "github.com/google/certificate-transparency-go/x509" +) + +type interval struct { + lower *time.Time // nil => no lower bound + upper *time.Time // nil => no upper bound +} + +// TemporalLogConfigFromFile creates a TemporalLogConfig object from the given +// filename, which should contain text-protobuf encoded configuration data. +func TemporalLogConfigFromFile(filename string) (*configpb.TemporalLogConfig, error) { + if len(filename) == 0 { + return nil, errors.New("log config filename empty") + } + + cfgText, err := ioutil.ReadFile(filename) + if err != nil { + return nil, fmt.Errorf("failed to read log config: %v", err) + } + + var cfg configpb.TemporalLogConfig + if err := proto.UnmarshalText(string(cfgText), &cfg); err != nil { + return nil, fmt.Errorf("failed to parse log config: %v", err) + } + + if len(cfg.Shard) == 0 { + return nil, errors.New("empty log config found") + } + return &cfg, nil +} + +// AddLogClient is an interface that allows adding certificates and pre-certificates to a log. +// Both LogClient and TemporalLogClient implement this interface, which allows users to +// commonize code for adding certs to normal/temporal logs. +type AddLogClient interface { + AddChain(ctx context.Context, chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) + AddPreChain(ctx context.Context, chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) + GetAcceptedRoots(ctx context.Context) ([]ct.ASN1Cert, error) +} + +// TemporalLogClient allows [pre-]certificates to be uploaded to a temporal log. +type TemporalLogClient struct { + Clients []*LogClient + intervals []interval +} + +// NewTemporalLogClient builds a new client for interacting with a temporal log. +// The provided config should be contiguous and chronological. +func NewTemporalLogClient(cfg configpb.TemporalLogConfig, hc *http.Client) (*TemporalLogClient, error) { + if len(cfg.Shard) == 0 { + return nil, errors.New("empty config") + } + + overall, err := shardInterval(cfg.Shard[0]) + if err != nil { + return nil, fmt.Errorf("cfg.Shard[0] invalid: %v", err) + } + intervals := make([]interval, 0, len(cfg.Shard)) + intervals = append(intervals, overall) + for i := 1; i < len(cfg.Shard); i++ { + interval, err := shardInterval(cfg.Shard[i]) + if err != nil { + return nil, fmt.Errorf("cfg.Shard[%d] invalid: %v", i, err) + } + if overall.upper == nil { + return nil, fmt.Errorf("cfg.Shard[%d] extends an interval with no upper bound", i) + } + if interval.lower == nil { + return nil, fmt.Errorf("cfg.Shard[%d] has no lower bound but extends an interval", i) + } + if !interval.lower.Equal(*overall.upper) { + return nil, fmt.Errorf("cfg.Shard[%d] starts at %v but previous interval ended at %v", i, interval.lower, overall.upper) + } + overall.upper = interval.upper + intervals = append(intervals, interval) + } + clients := make([]*LogClient, 0, len(cfg.Shard)) + for i, shard := range cfg.Shard { + opts := jsonclient.Options{} + opts.PublicKeyDER = shard.GetPublicKeyDer() + c, err := New(shard.Uri, hc, opts) + if err != nil { + return nil, fmt.Errorf("failed to create client for cfg.Shard[%d]: %v", i, err) + } + clients = append(clients, c) + } + tlc := TemporalLogClient{ + Clients: clients, + intervals: intervals, + } + return &tlc, nil +} + +// GetAcceptedRoots retrieves the set of acceptable root certificates for all +// of the shards of a temporal log (i.e. the union). +func (tlc *TemporalLogClient) GetAcceptedRoots(ctx context.Context) ([]ct.ASN1Cert, error) { + type result struct { + roots []ct.ASN1Cert + err error + } + results := make(chan result, len(tlc.Clients)) + for _, c := range tlc.Clients { + go func(c *LogClient) { + var r result + r.roots, r.err = c.GetAcceptedRoots(ctx) + results <- r + }(c) + } + + var allRoots []ct.ASN1Cert + seen := make(map[[sha256.Size]byte]bool) + for range tlc.Clients { + r := <-results + if r.err != nil { + return nil, r.err + } + for _, root := range r.roots { + h := sha256.Sum256(root.Data) + if seen[h] { + continue + } + seen[h] = true + allRoots = append(allRoots, root) + } + } + return allRoots, nil +} + +// AddChain adds the (DER represented) X509 chain to the appropriate log. +func (tlc *TemporalLogClient) AddChain(ctx context.Context, chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) { + return tlc.addChain(ctx, ct.X509LogEntryType, ct.AddChainPath, chain) +} + +// AddPreChain adds the (DER represented) Precertificate chain to the appropriate log. +func (tlc *TemporalLogClient) AddPreChain(ctx context.Context, chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) { + return tlc.addChain(ctx, ct.PrecertLogEntryType, ct.AddPreChainPath, chain) +} + +func (tlc *TemporalLogClient) addChain(ctx context.Context, ctype ct.LogEntryType, path string, chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) { + // Parse the first entry in the chain + if len(chain) == 0 { + return nil, errors.New("missing chain") + } + cert, err := x509.ParseCertificate(chain[0].Data) + if err != nil { + return nil, fmt.Errorf("failed to parse initial chain entry: %v", err) + } + cidx, err := tlc.IndexByDate(cert.NotAfter) + if err != nil { + return nil, fmt.Errorf("failed to find log to process cert: %v", err) + } + return tlc.Clients[cidx].addChainWithRetry(ctx, ctype, path, chain) +} + +// IndexByDate returns the index of the Clients entry that is appropriate for the given +// date. +func (tlc *TemporalLogClient) IndexByDate(when time.Time) (int, error) { + for i, interval := range tlc.intervals { + if (interval.lower != nil) && when.Before(*interval.lower) { + continue + } + if (interval.upper != nil) && !when.Before(*interval.upper) { + continue + } + return i, nil + } + return -1, fmt.Errorf("no log found encompassing date %v", when) +} + +func shardInterval(cfg *configpb.LogShardConfig) (interval, error) { + var interval interval + if cfg.NotAfterStart != nil { + t, err := ptypes.Timestamp(cfg.NotAfterStart) + if err != nil { + return interval, fmt.Errorf("failed to parse NotAfterStart: %v", err) + } + interval.lower = &t + } + if cfg.NotAfterLimit != nil { + t, err := ptypes.Timestamp(cfg.NotAfterLimit) + if err != nil { + return interval, fmt.Errorf("failed to parse NotAfterLimit: %v", err) + } + interval.upper = &t + } + + if interval.lower != nil && interval.upper != nil && !(*interval.lower).Before(*interval.upper) { + return interval, errors.New("inverted interval") + } + return interval, nil +} diff --git a/vendor/github.com/google/certificate-transparency-go/gometalinter.json b/vendor/github.com/google/certificate-transparency-go/gometalinter.json new file mode 100644 index 00000000000..f85f8259c08 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/gometalinter.json @@ -0,0 +1,27 @@ +{ + "Linters": { + "license": "./scripts/check_license.sh:PATH:LINE:MESSAGE", + "forked": "./scripts/check_forked.sh:PATH:LINE:MESSAGE", + "unforked": "./scripts/check_unforked.sh:PATH:LINE:MESSAGE" + }, + "Enable": [ + "forked", + "gocyclo", + "gofmt", + "goimports", + "golint", + "license", + "misspell", + "unforked", + "vet" + ], + "Exclude": [ + "x509/", + "asn1/", + ".+\\.pb\\.go", + ".+\\.pb\\.gw\\.go", + "mock_.+\\.go" + ], + "Cyclo": 40, + "Vendor": true +} diff --git a/vendor/github.com/google/certificate-transparency/go/client/BUILD b/vendor/github.com/google/certificate-transparency-go/jsonclient/BUILD similarity index 55% rename from vendor/github.com/google/certificate-transparency/go/client/BUILD rename to vendor/github.com/google/certificate-transparency-go/jsonclient/BUILD index 6102a9a34c9..41479fd868f 100644 --- a/vendor/github.com/google/certificate-transparency/go/client/BUILD +++ b/vendor/github.com/google/certificate-transparency-go/jsonclient/BUILD @@ -2,13 +2,16 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library") go_library( name = "go_default_library", - srcs = ["logclient.go"], - importpath = "github.com/google/certificate-transparency/go/client", + srcs = [ + "backoff.go", + "client.go", + ], + importpath = "github.com/google/certificate-transparency-go/jsonclient", visibility = ["//visibility:public"], deps = [ - "//vendor/github.com/google/certificate-transparency/go:go_default_library", - "//vendor/github.com/mreiferson/go-httpclient:go_default_library", - "//vendor/golang.org/x/net/context:go_default_library", + "//vendor/github.com/google/certificate-transparency-go:go_default_library", + "//vendor/github.com/google/certificate-transparency-go/x509:go_default_library", + "//vendor/golang.org/x/net/context/ctxhttp:go_default_library", ], ) diff --git a/vendor/github.com/google/certificate-transparency-go/jsonclient/backoff.go b/vendor/github.com/google/certificate-transparency-go/jsonclient/backoff.go new file mode 100644 index 00000000000..0c969d094e2 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/jsonclient/backoff.go @@ -0,0 +1,72 @@ +// Copyright 2017 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package jsonclient + +import ( + "sync" + "time" +) + +type backoff struct { + mu sync.RWMutex + multiplier uint + notBefore time.Time +} + +const ( + // maximum backoff is 2^(maxMultiplier-1) = 128 seconds + maxMultiplier = 8 +) + +func (b *backoff) set(override *time.Duration) time.Duration { + b.mu.Lock() + defer b.mu.Unlock() + if b.notBefore.After(time.Now()) { + if override != nil { + // If existing backoff is set but override would be longer than + // it then set it to that. + notBefore := time.Now().Add(*override) + if notBefore.After(b.notBefore) { + b.notBefore = notBefore + } + } + return time.Until(b.notBefore) + } + var wait time.Duration + if override != nil { + wait = *override + } else { + if b.multiplier < maxMultiplier { + b.multiplier++ + } + wait = time.Second * time.Duration(1<<(b.multiplier-1)) + } + b.notBefore = time.Now().Add(wait) + return wait +} + +func (b *backoff) decreaseMultiplier() { + b.mu.Lock() + defer b.mu.Unlock() + if b.multiplier > 0 { + b.multiplier-- + } +} + +func (b *backoff) until() time.Time { + b.mu.RLock() + defer b.mu.RUnlock() + return b.notBefore +} diff --git a/vendor/github.com/google/certificate-transparency-go/jsonclient/client.go b/vendor/github.com/google/certificate-transparency-go/jsonclient/client.go new file mode 100644 index 00000000000..45638fc69b4 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/jsonclient/client.go @@ -0,0 +1,289 @@ +// Copyright 2016 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package jsonclient + +import ( + "bytes" + "context" + "crypto" + "encoding/json" + "errors" + "fmt" + "io/ioutil" + "log" + "math/rand" + "net/http" + "net/url" + "strconv" + "strings" + "time" + + ct "github.com/google/certificate-transparency-go" + "github.com/google/certificate-transparency-go/x509" + "golang.org/x/net/context/ctxhttp" +) + +const maxJitter = 250 * time.Millisecond + +type backoffer interface { + // set adjusts/increases the current backoff interval (typically on retryable failure); + // if the optional parameter is provided, this will be used as the interval if it is greater + // than the currently set interval. Returns the current wait period so that it can be + // logged along with any error message. + set(*time.Duration) time.Duration + // decreaseMultiplier reduces the current backoff multiplier, typically on success. + decreaseMultiplier() + // until returns the time until which the client should wait before making a request, + // it may be in the past in which case it should be ignored. + until() time.Time +} + +// JSONClient provides common functionality for interacting with a JSON server +// that uses cryptographic signatures. +type JSONClient struct { + uri string // the base URI of the server. e.g. http://ct.googleapis/pilot + httpClient *http.Client // used to interact with the server via HTTP + Verifier *ct.SignatureVerifier // nil for no verification (e.g. no public key available) + logger Logger // interface to use for logging warnings and errors + backoff backoffer // object used to store and calculate backoff information +} + +// Logger is a simple logging interface used to log internal errors and warnings +type Logger interface { + // Printf formats and logs a message + Printf(string, ...interface{}) +} + +// Options are the options for creating a new JSONClient. +type Options struct { + // Interface to use for logging warnings and errors, if nil the + // standard library log package will be used. + Logger Logger + // PEM format public key to use for signature verification. + PublicKey string + // DER format public key to use for signature verification. + PublicKeyDER []byte +} + +// ParsePublicKey parses and returns the public key contained in opts. +// If both opts.PublicKey and opts.PublicKeyDER are set, PublicKeyDER is used. +// If neither is set, nil will be returned. +func (opts *Options) ParsePublicKey() (crypto.PublicKey, error) { + if len(opts.PublicKeyDER) > 0 { + return x509.ParsePKIXPublicKey(opts.PublicKeyDER) + } + + if opts.PublicKey != "" { + pubkey, _ /* keyhash */, rest, err := ct.PublicKeyFromPEM([]byte(opts.PublicKey)) + if err != nil { + return nil, err + } + if len(rest) > 0 { + return nil, errors.New("extra data found after PEM key decoded") + } + return pubkey, nil + } + + return nil, nil +} + +type basicLogger struct{} + +func (bl *basicLogger) Printf(msg string, args ...interface{}) { + log.Printf(msg, args...) +} + +// New constructs a new JSONClient instance, for the given base URI, using the +// given http.Client object (if provided) and the Options object. +// If opts does not specify a public key, signatures will not be verified. +func New(uri string, hc *http.Client, opts Options) (*JSONClient, error) { + pubkey, err := opts.ParsePublicKey() + if err != nil { + return nil, fmt.Errorf("invalid public key: %v", err) + } + + var verifier *ct.SignatureVerifier + if pubkey != nil { + var err error + verifier, err = ct.NewSignatureVerifier(pubkey) + if err != nil { + return nil, err + } + } + + if hc == nil { + hc = new(http.Client) + } + logger := opts.Logger + if logger == nil { + logger = &basicLogger{} + } + return &JSONClient{ + uri: strings.TrimRight(uri, "/"), + httpClient: hc, + Verifier: verifier, + logger: logger, + backoff: &backoff{}, + }, nil +} + +// GetAndParse makes a HTTP GET call to the given path, and attempta to parse +// the response as a JSON representation of the rsp structure. Returns the +// http.Response, the body of the response, and an error. Note that the +// returned http.Response can be non-nil even when an error is returned, +// in particular when the HTTP status is not OK or when the JSON parsing fails. +func (c *JSONClient) GetAndParse(ctx context.Context, path string, params map[string]string, rsp interface{}) (*http.Response, []byte, error) { + if ctx == nil { + return nil, nil, errors.New("context.Context required") + } + // Build a GET request with URL-encoded parameters. + vals := url.Values{} + for k, v := range params { + vals.Add(k, v) + } + fullURI := fmt.Sprintf("%s%s?%s", c.uri, path, vals.Encode()) + httpReq, err := http.NewRequest(http.MethodGet, fullURI, nil) + if err != nil { + return nil, nil, err + } + + httpRsp, err := ctxhttp.Do(ctx, c.httpClient, httpReq) + if err != nil { + return nil, nil, err + } + + // Read everything now so http.Client can reuse the connection. + body, err := ioutil.ReadAll(httpRsp.Body) + httpRsp.Body.Close() + if err != nil { + return httpRsp, body, fmt.Errorf("failed to read response body: %v", err) + } + + if httpRsp.StatusCode != http.StatusOK { + return httpRsp, body, fmt.Errorf("got HTTP Status %q", httpRsp.Status) + } + + if err := json.NewDecoder(bytes.NewReader(body)).Decode(rsp); err != nil { + return httpRsp, body, err + } + + return httpRsp, body, nil +} + +// PostAndParse makes a HTTP POST call to the given path, including the request +// parameters, and attempts to parse the response as a JSON representation of +// the rsp structure. Returns the http.Response, the body of the response, and +// an error. Note that the returned http.Response can be non-nil even when an +// error is returned, in particular when the HTTP status is not OK or when the +// JSON parsing fails. +func (c *JSONClient) PostAndParse(ctx context.Context, path string, req, rsp interface{}) (*http.Response, []byte, error) { + if ctx == nil { + return nil, nil, errors.New("context.Context required") + } + // Build a POST request with JSON body. + postBody, err := json.Marshal(req) + if err != nil { + return nil, nil, err + } + fullURI := fmt.Sprintf("%s%s", c.uri, path) + httpReq, err := http.NewRequest(http.MethodPost, fullURI, bytes.NewReader(postBody)) + if err != nil { + return nil, nil, err + } + httpReq.Header.Set("Content-Type", "application/json") + + httpRsp, err := ctxhttp.Do(ctx, c.httpClient, httpReq) + + // Read all of the body, if there is one, so that the http.Client can do Keep-Alive. + var body []byte + if httpRsp != nil { + body, err = ioutil.ReadAll(httpRsp.Body) + httpRsp.Body.Close() + } + if err != nil { + return httpRsp, body, err + } + + if httpRsp.StatusCode == http.StatusOK { + if err = json.Unmarshal(body, &rsp); err != nil { + return httpRsp, body, err + } + } + return httpRsp, body, nil +} + +// waitForBackoff blocks until the defined backoff interval or context has expired, if the returned +// not before time is in the past it returns immediately. +func (c *JSONClient) waitForBackoff(ctx context.Context) error { + dur := time.Until(c.backoff.until().Add(time.Millisecond * time.Duration(rand.Intn(int(maxJitter.Seconds()*1000))))) + if dur < 0 { + dur = 0 + } + backoffTimer := time.NewTimer(dur) + select { + case <-ctx.Done(): + return ctx.Err() + case <-backoffTimer.C: + } + return nil +} + +// PostAndParseWithRetry makes a HTTP POST call, but retries (with backoff) on +// retriable errors; the caller should set a deadline on the provided context +// to prevent infinite retries. Return values are as for PostAndParse. +func (c *JSONClient) PostAndParseWithRetry(ctx context.Context, path string, req, rsp interface{}) (*http.Response, []byte, error) { + if ctx == nil { + return nil, nil, errors.New("context.Context required") + } + for { + httpRsp, body, err := c.PostAndParse(ctx, path, req, rsp) + if err != nil { + // Don't retry context errors. + if err == context.Canceled || err == context.DeadlineExceeded { + return nil, nil, err + } + wait := c.backoff.set(nil) + c.logger.Printf("Request failed, backing-off for %s: %s", wait, err) + } else { + switch { + case httpRsp.StatusCode == http.StatusOK: + return httpRsp, body, nil + case httpRsp.StatusCode == http.StatusRequestTimeout: + // Request timeout, retry immediately + c.logger.Printf("Request timed out, retrying immediately") + case httpRsp.StatusCode == http.StatusServiceUnavailable: + var backoff *time.Duration + // Retry-After may be either a number of seconds as a int or a RFC 1123 + // date string (RFC 7231 Section 7.1.3) + if retryAfter := httpRsp.Header.Get("Retry-After"); retryAfter != "" { + if seconds, err := strconv.Atoi(retryAfter); err == nil { + b := time.Duration(seconds) * time.Second + backoff = &b + } else if date, err := time.Parse(time.RFC1123, retryAfter); err == nil { + b := date.Sub(time.Now()) + backoff = &b + } + } + wait := c.backoff.set(backoff) + c.logger.Printf("Request failed, backing-off for %s: got HTTP status %s", wait, httpRsp.Status) + default: + return httpRsp, body, fmt.Errorf("got HTTP Status %q", httpRsp.Status) + } + } + if err := c.waitForBackoff(ctx); err != nil { + return nil, nil, err + } + } +} diff --git a/vendor/github.com/google/certificate-transparency-go/serialization.go b/vendor/github.com/google/certificate-transparency-go/serialization.go new file mode 100644 index 00000000000..00b51c1c979 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/serialization.go @@ -0,0 +1,255 @@ +// Copyright 2015 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package ct + +import ( + "crypto" + "crypto/sha256" + "encoding/json" + "fmt" + "strings" + + "github.com/google/certificate-transparency-go/tls" + "github.com/google/certificate-transparency-go/x509" +) + +// SerializeSCTSignatureInput serializes the passed in sct and log entry into +// the correct format for signing. +func SerializeSCTSignatureInput(sct SignedCertificateTimestamp, entry LogEntry) ([]byte, error) { + switch sct.SCTVersion { + case V1: + input := CertificateTimestamp{ + SCTVersion: sct.SCTVersion, + SignatureType: CertificateTimestampSignatureType, + Timestamp: sct.Timestamp, + EntryType: entry.Leaf.TimestampedEntry.EntryType, + Extensions: sct.Extensions, + } + switch entry.Leaf.TimestampedEntry.EntryType { + case X509LogEntryType: + input.X509Entry = entry.Leaf.TimestampedEntry.X509Entry + case PrecertLogEntryType: + input.PrecertEntry = &PreCert{ + IssuerKeyHash: entry.Leaf.TimestampedEntry.PrecertEntry.IssuerKeyHash, + TBSCertificate: entry.Leaf.TimestampedEntry.PrecertEntry.TBSCertificate, + } + case XJSONLogEntryType: + input.JSONEntry = entry.Leaf.TimestampedEntry.JSONEntry + default: + return nil, fmt.Errorf("unsupported entry type %s", entry.Leaf.TimestampedEntry.EntryType) + } + return tls.Marshal(input) + default: + return nil, fmt.Errorf("unknown SCT version %d", sct.SCTVersion) + } +} + +// SerializeSTHSignatureInput serializes the passed in STH into the correct +// format for signing. +func SerializeSTHSignatureInput(sth SignedTreeHead) ([]byte, error) { + switch sth.Version { + case V1: + if len(sth.SHA256RootHash) != crypto.SHA256.Size() { + return nil, fmt.Errorf("invalid TreeHash length, got %d expected %d", len(sth.SHA256RootHash), crypto.SHA256.Size()) + } + + input := TreeHeadSignature{ + Version: sth.Version, + SignatureType: TreeHashSignatureType, + Timestamp: sth.Timestamp, + TreeSize: sth.TreeSize, + SHA256RootHash: sth.SHA256RootHash, + } + return tls.Marshal(input) + default: + return nil, fmt.Errorf("unsupported STH version %d", sth.Version) + } +} + +// CreateX509MerkleTreeLeaf generates a MerkleTreeLeaf for an X509 cert +func CreateX509MerkleTreeLeaf(cert ASN1Cert, timestamp uint64) *MerkleTreeLeaf { + return &MerkleTreeLeaf{ + Version: V1, + LeafType: TimestampedEntryLeafType, + TimestampedEntry: &TimestampedEntry{ + Timestamp: timestamp, + EntryType: X509LogEntryType, + X509Entry: &cert, + }, + } +} + +// CreateJSONMerkleTreeLeaf creates the merkle tree leaf for json data. +func CreateJSONMerkleTreeLeaf(data interface{}, timestamp uint64) *MerkleTreeLeaf { + jsonData, err := json.Marshal(AddJSONRequest{Data: data}) + if err != nil { + return nil + } + // Match the JSON serialization implemented by json-c + jsonStr := strings.Replace(string(jsonData), ":", ": ", -1) + jsonStr = strings.Replace(jsonStr, ",", ", ", -1) + jsonStr = strings.Replace(jsonStr, "{", "{ ", -1) + jsonStr = strings.Replace(jsonStr, "}", " }", -1) + jsonStr = strings.Replace(jsonStr, "/", `\/`, -1) + // TODO: Pending google/certificate-transparency#1243, replace with + // ObjectHash once supported by CT server. + + return &MerkleTreeLeaf{ + Version: V1, + LeafType: TimestampedEntryLeafType, + TimestampedEntry: &TimestampedEntry{ + Timestamp: timestamp, + EntryType: XJSONLogEntryType, + JSONEntry: &JSONDataEntry{Data: []byte(jsonStr)}, + }, + } +} + +// MerkleTreeLeafFromRawChain generates a MerkleTreeLeaf from a chain (in DER-encoded form) and timestamp. +func MerkleTreeLeafFromRawChain(rawChain []ASN1Cert, etype LogEntryType, timestamp uint64) (*MerkleTreeLeaf, error) { + // Need at most 3 of the chain + count := 3 + if count > len(rawChain) { + count = len(rawChain) + } + chain := make([]*x509.Certificate, count) + for i := range chain { + cert, err := x509.ParseCertificate(rawChain[i].Data) + if err != nil { + return nil, fmt.Errorf("failed to parse chain[%d] cert: %v", i, err) + } + chain[i] = cert + } + return MerkleTreeLeafFromChain(chain, etype, timestamp) +} + +// MerkleTreeLeafFromChain generates a MerkleTreeLeaf from a chain and timestamp. +func MerkleTreeLeafFromChain(chain []*x509.Certificate, etype LogEntryType, timestamp uint64) (*MerkleTreeLeaf, error) { + leaf := MerkleTreeLeaf{ + Version: V1, + LeafType: TimestampedEntryLeafType, + TimestampedEntry: &TimestampedEntry{ + EntryType: etype, + Timestamp: timestamp, + }, + } + if etype == X509LogEntryType { + leaf.TimestampedEntry.X509Entry = &ASN1Cert{Data: chain[0].Raw} + return &leaf, nil + } + if etype != PrecertLogEntryType { + return nil, fmt.Errorf("unknown LogEntryType %d", etype) + } + + // Pre-certs are more complicated. First, parse the leaf pre-cert and its + // putative issuer. + if len(chain) < 2 { + return nil, fmt.Errorf("no issuer cert available for precert leaf building") + } + issuer := chain[1] + cert := chain[0] + + var preIssuer *x509.Certificate + if IsPreIssuer(issuer) { + // Replace the cert's issuance information with details from the pre-issuer. + preIssuer = issuer + + // The issuer of the pre-cert is not going to be the issuer of the final + // cert. Change to use the final issuer's key hash. + if len(chain) < 3 { + return nil, fmt.Errorf("no issuer cert available for pre-issuer") + } + issuer = chain[2] + } + + // Next, post-process the DER-encoded TBSCertificate, to remove the CT poison + // extension and possibly update the issuer field. + defangedTBS, err := x509.BuildPrecertTBS(cert.RawTBSCertificate, preIssuer) + if err != nil { + return nil, fmt.Errorf("failed to remove poison extension: %v", err) + } + + leaf.TimestampedEntry.EntryType = PrecertLogEntryType + leaf.TimestampedEntry.PrecertEntry = &PreCert{ + IssuerKeyHash: sha256.Sum256(issuer.RawSubjectPublicKeyInfo), + TBSCertificate: defangedTBS, + } + return &leaf, nil +} + +// IsPreIssuer indicates whether a certificate is a pre-cert issuer with the specific +// certificate transparency extended key usage. +func IsPreIssuer(issuer *x509.Certificate) bool { + for _, eku := range issuer.ExtKeyUsage { + if eku == x509.ExtKeyUsageCertificateTransparency { + return true + } + } + return false +} + +// LogEntryFromLeaf converts a LeafEntry object (which has the raw leaf data after JSON parsing) +// into a LogEntry object (which includes x509.Certificate objects, after TLS and ASN.1 parsing). +// Note that this function may return a valid LogEntry object and a non-nil error value, when +// the error indicates a non-fatal parsing error (of type x509.NonFatalErrors). +func LogEntryFromLeaf(index int64, leafEntry *LeafEntry) (*LogEntry, error) { + var leaf MerkleTreeLeaf + if rest, err := tls.Unmarshal(leafEntry.LeafInput, &leaf); err != nil { + return nil, fmt.Errorf("failed to unmarshal MerkleTreeLeaf for index %d: %v", index, err) + } else if len(rest) > 0 { + return nil, fmt.Errorf("trailing data (%d bytes) after MerkleTreeLeaf for index %d", len(rest), index) + } + + var err error + entry := LogEntry{Index: index, Leaf: leaf} + switch leaf.TimestampedEntry.EntryType { + case X509LogEntryType: + var certChain CertificateChain + if rest, err := tls.Unmarshal(leafEntry.ExtraData, &certChain); err != nil { + return nil, fmt.Errorf("failed to unmarshal ExtraData for index %d: %v", index, err) + } else if len(rest) > 0 { + return nil, fmt.Errorf("trailing data (%d bytes) after CertificateChain for index %d", len(rest), index) + } + entry.Chain = certChain.Entries + entry.X509Cert, err = leaf.X509Certificate() + if _, ok := err.(x509.NonFatalErrors); !ok && err != nil { + return nil, fmt.Errorf("failed to parse certificate in MerkleTreeLeaf for index %d: %v", index, err) + } + + case PrecertLogEntryType: + var precertChain PrecertChainEntry + if rest, err := tls.Unmarshal(leafEntry.ExtraData, &precertChain); err != nil { + return nil, fmt.Errorf("failed to unmarshal PrecertChainEntry for index %d: %v", index, err) + } else if len(rest) > 0 { + return nil, fmt.Errorf("trailing data (%d bytes) after PrecertChainEntry for index %d", len(rest), index) + } + entry.Chain = precertChain.CertificateChain + var tbsCert *x509.Certificate + tbsCert, err = leaf.Precertificate() + if _, ok := err.(x509.NonFatalErrors); !ok && err != nil { + return nil, fmt.Errorf("failed to parse precertificate in MerkleTreeLeaf for index %d: %v", index, err) + } + entry.Precert = &Precertificate{ + Submitted: precertChain.PreCertificate, + IssuerKeyHash: leaf.TimestampedEntry.PrecertEntry.IssuerKeyHash, + TBSCertificate: tbsCert, + } + + default: + return nil, fmt.Errorf("saw unknown entry type at index %d: %v", index, leaf.TimestampedEntry.EntryType) + } + // err may hold a x509.NonFatalErrors object. + return &entry, err +} diff --git a/vendor/github.com/google/certificate-transparency/go/signatures.go b/vendor/github.com/google/certificate-transparency-go/signatures.go similarity index 55% rename from vendor/github.com/google/certificate-transparency/go/signatures.go rename to vendor/github.com/google/certificate-transparency-go/signatures.go index 600db245493..5129de5572b 100644 --- a/vendor/github.com/google/certificate-transparency/go/signatures.go +++ b/vendor/github.com/google/certificate-transparency-go/signatures.go @@ -1,3 +1,17 @@ +// Copyright 2015 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package ct import ( @@ -6,14 +20,13 @@ import ( "crypto/elliptic" "crypto/rsa" "crypto/sha256" - "crypto/x509" - "encoding/asn1" "encoding/pem" - "errors" "flag" "fmt" "log" - "math/big" + + "github.com/google/certificate-transparency-go/tls" + "github.com/google/certificate-transparency-go/x509" ) var allowVerificationWithNonCompliantKeys = flag.Bool("allow_verification_with_non_compliant_keys", false, @@ -64,61 +77,18 @@ func NewSignatureVerifier(pk crypto.PublicKey) (*SignatureVerifier, error) { }, nil } -// verifySignature verifies that the passed in signature over data was created by our PublicKey. -// Currently, only SHA256 is supported as a HashAlgorithm, and only ECDSA and RSA signatures are supported. -func (s SignatureVerifier) verifySignature(data []byte, sig DigitallySigned) error { - if sig.HashAlgorithm != SHA256 { - return fmt.Errorf("unsupported HashAlgorithm in signature: %v", sig.HashAlgorithm) - } - - hasherType := crypto.SHA256 - hasher := hasherType.New() - if _, err := hasher.Write(data); err != nil { - return fmt.Errorf("failed to write to hasher: %v", err) - } - hash := hasher.Sum([]byte{}) - - switch sig.SignatureAlgorithm { - case RSA: - rsaKey, ok := s.pubKey.(*rsa.PublicKey) - if !ok { - return fmt.Errorf("cannot verify RSA signature with %T key", s.pubKey) - } - if err := rsa.VerifyPKCS1v15(rsaKey, hasherType, hash, sig.Signature); err != nil { - return fmt.Errorf("failed to verify rsa signature: %v", err) - } - case ECDSA: - ecdsaKey, ok := s.pubKey.(*ecdsa.PublicKey) - if !ok { - return fmt.Errorf("cannot verify ECDSA signature with %T key", s.pubKey) - } - var ecdsaSig struct { - R, S *big.Int - } - rest, err := asn1.Unmarshal(sig.Signature, &ecdsaSig) - if err != nil { - return fmt.Errorf("failed to unmarshal ECDSA signature: %v", err) - } - if len(rest) != 0 { - log.Printf("Garbage following signature %v", rest) - } - - if !ecdsa.Verify(ecdsaKey, hash, ecdsaSig.R, ecdsaSig.S) { - return errors.New("failed to verify ecdsa signature") - } - default: - return fmt.Errorf("unsupported signature type %v", sig.SignatureAlgorithm) - } - return nil +// VerifySignature verifies the given signature sig matches the data. +func (s SignatureVerifier) VerifySignature(data []byte, sig tls.DigitallySigned) error { + return tls.VerifySignature(s.pubKey, data, sig) } -// VerifySCTSignature verifies that the SCT's signature is valid for the given LogEntry +// VerifySCTSignature verifies that the SCT's signature is valid for the given LogEntry. func (s SignatureVerifier) VerifySCTSignature(sct SignedCertificateTimestamp, entry LogEntry) error { sctData, err := SerializeSCTSignatureInput(sct, entry) if err != nil { return err } - return s.verifySignature(sctData, sct.Signature) + return s.VerifySignature(sctData, tls.DigitallySigned(sct.Signature)) } // VerifySTHSignature verifies that the STH's signature is valid. @@ -127,5 +97,5 @@ func (s SignatureVerifier) VerifySTHSignature(sth SignedTreeHead) error { if err != nil { return err } - return s.verifySignature(sthData, sth.TreeHeadSignature) + return s.VerifySignature(sthData, tls.DigitallySigned(sth.TreeHeadSignature)) } diff --git a/vendor/github.com/google/certificate-transparency-go/tls/BUILD b/vendor/github.com/google/certificate-transparency-go/tls/BUILD new file mode 100644 index 00000000000..58e0694c767 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/tls/BUILD @@ -0,0 +1,27 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +go_library( + name = "go_default_library", + srcs = [ + "signature.go", + "tls.go", + "types.go", + ], + importpath = "github.com/google/certificate-transparency-go/tls", + visibility = ["//visibility:public"], + deps = ["//vendor/github.com/google/certificate-transparency-go/asn1:go_default_library"], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [":package-srcs"], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/vendor/github.com/google/certificate-transparency-go/tls/signature.go b/vendor/github.com/google/certificate-transparency-go/tls/signature.go new file mode 100644 index 00000000000..bfdb016d2fd --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/tls/signature.go @@ -0,0 +1,152 @@ +// Copyright 2016 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package tls + +import ( + "crypto" + "crypto/dsa" + "crypto/ecdsa" + _ "crypto/md5" // For registration side-effect + "crypto/rand" + "crypto/rsa" + _ "crypto/sha1" // For registration side-effect + _ "crypto/sha256" // For registration side-effect + _ "crypto/sha512" // For registration side-effect + "errors" + "fmt" + "log" + "math/big" + + "github.com/google/certificate-transparency-go/asn1" +) + +type dsaSig struct { + R, S *big.Int +} + +func generateHash(algo HashAlgorithm, data []byte) ([]byte, crypto.Hash, error) { + var hashType crypto.Hash + switch algo { + case MD5: + hashType = crypto.MD5 + case SHA1: + hashType = crypto.SHA1 + case SHA224: + hashType = crypto.SHA224 + case SHA256: + hashType = crypto.SHA256 + case SHA384: + hashType = crypto.SHA384 + case SHA512: + hashType = crypto.SHA512 + default: + return nil, hashType, fmt.Errorf("unsupported Algorithm.Hash in signature: %v", algo) + } + + hasher := hashType.New() + if _, err := hasher.Write(data); err != nil { + return nil, hashType, fmt.Errorf("failed to write to hasher: %v", err) + } + return hasher.Sum([]byte{}), hashType, nil +} + +// VerifySignature verifies that the passed in signature over data was created by the given PublicKey. +func VerifySignature(pubKey crypto.PublicKey, data []byte, sig DigitallySigned) error { + hash, hashType, err := generateHash(sig.Algorithm.Hash, data) + if err != nil { + return err + } + + switch sig.Algorithm.Signature { + case RSA: + rsaKey, ok := pubKey.(*rsa.PublicKey) + if !ok { + return fmt.Errorf("cannot verify RSA signature with %T key", pubKey) + } + if err := rsa.VerifyPKCS1v15(rsaKey, hashType, hash, sig.Signature); err != nil { + return fmt.Errorf("failed to verify rsa signature: %v", err) + } + case DSA: + dsaKey, ok := pubKey.(*dsa.PublicKey) + if !ok { + return fmt.Errorf("cannot verify DSA signature with %T key", pubKey) + } + var dsaSig dsaSig + rest, err := asn1.Unmarshal(sig.Signature, &dsaSig) + if err != nil { + return fmt.Errorf("failed to unmarshal DSA signature: %v", err) + } + if len(rest) != 0 { + log.Printf("Garbage following signature %v", rest) + } + if dsaSig.R.Sign() <= 0 || dsaSig.S.Sign() <= 0 { + return errors.New("DSA signature contained zero or negative values") + } + if !dsa.Verify(dsaKey, hash, dsaSig.R, dsaSig.S) { + return errors.New("failed to verify DSA signature") + } + case ECDSA: + ecdsaKey, ok := pubKey.(*ecdsa.PublicKey) + if !ok { + return fmt.Errorf("cannot verify ECDSA signature with %T key", pubKey) + } + var ecdsaSig dsaSig + rest, err := asn1.Unmarshal(sig.Signature, &ecdsaSig) + if err != nil { + return fmt.Errorf("failed to unmarshal ECDSA signature: %v", err) + } + if len(rest) != 0 { + log.Printf("Garbage following signature %v", rest) + } + if ecdsaSig.R.Sign() <= 0 || ecdsaSig.S.Sign() <= 0 { + return errors.New("ECDSA signature contained zero or negative values") + } + + if !ecdsa.Verify(ecdsaKey, hash, ecdsaSig.R, ecdsaSig.S) { + return errors.New("failed to verify ECDSA signature") + } + default: + return fmt.Errorf("unsupported Algorithm.Signature in signature: %v", sig.Algorithm.Hash) + } + return nil +} + +// CreateSignature builds a signature over the given data using the specified hash algorithm and private key. +func CreateSignature(privKey crypto.PrivateKey, hashAlgo HashAlgorithm, data []byte) (DigitallySigned, error) { + var sig DigitallySigned + sig.Algorithm.Hash = hashAlgo + hash, hashType, err := generateHash(sig.Algorithm.Hash, data) + if err != nil { + return sig, err + } + + switch privKey := privKey.(type) { + case rsa.PrivateKey: + sig.Algorithm.Signature = RSA + sig.Signature, err = rsa.SignPKCS1v15(rand.Reader, &privKey, hashType, hash) + return sig, err + case ecdsa.PrivateKey: + sig.Algorithm.Signature = ECDSA + var ecdsaSig dsaSig + ecdsaSig.R, ecdsaSig.S, err = ecdsa.Sign(rand.Reader, &privKey, hash) + if err != nil { + return sig, err + } + sig.Signature, err = asn1.Marshal(ecdsaSig) + return sig, err + default: + return sig, fmt.Errorf("unsupported private key type %T", privKey) + } +} diff --git a/vendor/github.com/google/certificate-transparency-go/tls/tls.go b/vendor/github.com/google/certificate-transparency-go/tls/tls.go new file mode 100644 index 00000000000..1bcd3a37966 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/tls/tls.go @@ -0,0 +1,711 @@ +// Copyright 2016 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package tls implements functionality for dealing with TLS-encoded data, +// as defined in RFC 5246. This includes parsing and generation of TLS-encoded +// data, together with utility functions for dealing with the DigitallySigned +// TLS type. +package tls + +import ( + "bytes" + "encoding/binary" + "fmt" + "reflect" + "strconv" + "strings" +) + +// This file holds utility functions for TLS encoding/decoding data +// as per RFC 5246 section 4. + +// A structuralError suggests that the TLS data is valid, but the Go type +// which is receiving it doesn't match. +type structuralError struct { + field string + msg string +} + +func (e structuralError) Error() string { + var prefix string + if e.field != "" { + prefix = e.field + ": " + } + return "tls: structure error: " + prefix + e.msg +} + +// A syntaxError suggests that the TLS data is invalid. +type syntaxError struct { + field string + msg string +} + +func (e syntaxError) Error() string { + var prefix string + if e.field != "" { + prefix = e.field + ": " + } + return "tls: syntax error: " + prefix + e.msg +} + +// Uint24 is an unsigned 3-byte integer. +type Uint24 uint32 + +// Enum is an unsigned integer. +type Enum uint64 + +var ( + uint8Type = reflect.TypeOf(uint8(0)) + uint16Type = reflect.TypeOf(uint16(0)) + uint24Type = reflect.TypeOf(Uint24(0)) + uint32Type = reflect.TypeOf(uint32(0)) + uint64Type = reflect.TypeOf(uint64(0)) + enumType = reflect.TypeOf(Enum(0)) +) + +// Unmarshal parses the TLS-encoded data in b and uses the reflect package to +// fill in an arbitrary value pointed at by val. Because Unmarshal uses the +// reflect package, the structs being written to must use exported fields +// (upper case names). +// +// The mappings between TLS types and Go types is as follows; some fields +// must have tags (to indicate their encoded size). +// +// TLS Go Required Tags +// opaque byte / uint8 +// uint8 byte / uint8 +// uint16 uint16 +// uint24 tls.Uint24 +// uint32 uint32 +// uint64 uint64 +// enum tls.Enum size:S or maxval:N +// Type []Type minlen:N,maxlen:M +// opaque[N] [N]byte / [N]uint8 +// uint8[N] [N]byte / [N]uint8 +// struct { } struct { } +// select(T) { +// case e1: Type *T selector:Field,val:e1 +// } +// +// TLS variants (RFC 5246 s4.6.1) are only supported when the value of the +// associated enumeration type is available earlier in the same enclosing +// struct, and each possible variant is marked with a selector tag (to +// indicate which field selects the variants) and a val tag (to indicate +// what value of the selector picks this particular field). +// +// For example, a TLS structure: +// +// enum { e1(1), e2(2) } EnumType; +// struct { +// EnumType sel; +// select(sel) { +// case e1: uint16 +// case e2: uint32 +// } data; +// } VariantItem; +// +// would have a corresponding Go type: +// +// type VariantItem struct { +// Sel tls.Enum `tls:"maxval:2"` +// Data16 *uint16 `tls:"selector:Sel,val:1"` +// Data32 *uint32 `tls:"selector:Sel,val:2"` +// } +// +// TLS fixed-length vectors of types other than opaque or uint8 are not supported. +// +// For TLS variable-length vectors that are themselves used in other vectors, +// create a single-field structure to represent the inner type. For example, for: +// +// opaque InnerType<1..65535>; +// struct { +// InnerType inners<1,65535>; +// } Something; +// +// convert to: +// +// type InnerType struct { +// Val []byte `tls:"minlen:1,maxlen:65535"` +// } +// type Something struct { +// Inners []InnerType `tls:"minlen:1,maxlen:65535"` +// } +// +// If the encoded value does not fit in the Go type, Unmarshal returns a parse error. +func Unmarshal(b []byte, val interface{}) ([]byte, error) { + return UnmarshalWithParams(b, val, "") +} + +// UnmarshalWithParams allows field parameters to be specified for the +// top-level element. The form of the params is the same as the field tags. +func UnmarshalWithParams(b []byte, val interface{}, params string) ([]byte, error) { + info, err := fieldTagToFieldInfo(params, "") + if err != nil { + return nil, err + } + // The passed in interface{} is a pointer (to allow the value to be written + // to); extract the pointed-to object as a reflect.Value, so parseField + // can do various introspection things. + v := reflect.ValueOf(val).Elem() + offset, err := parseField(v, b, 0, info) + if err != nil { + return nil, err + } + return b[offset:], nil +} + +// Return the number of bytes needed to encode values up to (and including) x. +func byteCount(x uint64) uint { + switch { + case x < 0x100: + return 1 + case x < 0x10000: + return 2 + case x < 0x1000000: + return 3 + case x < 0x100000000: + return 4 + case x < 0x10000000000: + return 5 + case x < 0x1000000000000: + return 6 + case x < 0x100000000000000: + return 7 + default: + return 8 + } +} + +type fieldInfo struct { + count uint // Number of bytes + countSet bool + minlen uint64 // Only relevant for slices + maxlen uint64 // Only relevant for slices + selector string // Only relevant for select sub-values + val uint64 // Only relevant for select sub-values + name string // Used for better error messages +} + +func (i *fieldInfo) fieldName() string { + if i == nil { + return "" + } + return i.name +} + +// Given a tag string, return a fieldInfo describing the field. +func fieldTagToFieldInfo(str string, name string) (*fieldInfo, error) { + var info *fieldInfo + // Iterate over clauses in the tag, ignoring any that don't parse properly. + for _, part := range strings.Split(str, ",") { + switch { + case strings.HasPrefix(part, "maxval:"): + if v, err := strconv.ParseUint(part[7:], 10, 64); err == nil { + info = &fieldInfo{count: byteCount(v), countSet: true} + } + case strings.HasPrefix(part, "size:"): + if sz, err := strconv.ParseUint(part[5:], 10, 32); err == nil { + info = &fieldInfo{count: uint(sz), countSet: true} + } + case strings.HasPrefix(part, "maxlen:"): + v, err := strconv.ParseUint(part[7:], 10, 64) + if err != nil { + continue + } + if info == nil { + info = &fieldInfo{} + } + info.count = byteCount(v) + info.countSet = true + info.maxlen = v + case strings.HasPrefix(part, "minlen:"): + v, err := strconv.ParseUint(part[7:], 10, 64) + if err != nil { + continue + } + if info == nil { + info = &fieldInfo{} + } + info.minlen = v + case strings.HasPrefix(part, "selector:"): + if info == nil { + info = &fieldInfo{} + } + info.selector = part[9:] + case strings.HasPrefix(part, "val:"): + v, err := strconv.ParseUint(part[4:], 10, 64) + if err != nil { + continue + } + if info == nil { + info = &fieldInfo{} + } + info.val = v + } + } + if info != nil { + info.name = name + if info.selector == "" { + if info.count < 1 { + return nil, structuralError{name, "field of unknown size in " + str} + } else if info.count > 8 { + return nil, structuralError{name, "specified size too large in " + str} + } else if info.minlen > info.maxlen { + return nil, structuralError{name, "specified length range inverted in " + str} + } else if info.val > 0 { + return nil, structuralError{name, "specified selector value but not field in " + str} + } + } + } else if name != "" { + info = &fieldInfo{name: name} + } + return info, nil +} + +// Check that a value fits into a field described by a fieldInfo structure. +func (i fieldInfo) check(val uint64, fldName string) error { + if val >= (1 << (8 * i.count)) { + return structuralError{fldName, fmt.Sprintf("value %d too large for size", val)} + } + if i.maxlen != 0 { + if val < i.minlen { + return structuralError{fldName, fmt.Sprintf("value %d too small for minimum %d", val, i.minlen)} + } + if val > i.maxlen { + return structuralError{fldName, fmt.Sprintf("value %d too large for maximum %d", val, i.maxlen)} + } + } + return nil +} + +// readVarUint reads an big-endian unsigned integer of the given size in +// bytes. +func readVarUint(data []byte, info *fieldInfo) (uint64, error) { + if info == nil || !info.countSet { + return 0, structuralError{info.fieldName(), "no field size information available"} + } + if len(data) < int(info.count) { + return 0, syntaxError{info.fieldName(), "truncated variable-length integer"} + } + var result uint64 + for i := uint(0); i < info.count; i++ { + result = (result << 8) | uint64(data[i]) + } + if err := info.check(result, info.name); err != nil { + return 0, err + } + return result, nil +} + +// parseField is the main parsing function. Given a byte slice and an offset +// (in bytes) into the data, it will try to parse a suitable ASN.1 value out +// and store it in the given Value. +func parseField(v reflect.Value, data []byte, initOffset int, info *fieldInfo) (int, error) { + offset := initOffset + rest := data[offset:] + + fieldType := v.Type() + // First look for known fixed types. + switch fieldType { + case uint8Type: + if len(rest) < 1 { + return offset, syntaxError{info.fieldName(), "truncated uint8"} + } + v.SetUint(uint64(rest[0])) + offset++ + return offset, nil + case uint16Type: + if len(rest) < 2 { + return offset, syntaxError{info.fieldName(), "truncated uint16"} + } + v.SetUint(uint64(binary.BigEndian.Uint16(rest))) + offset += 2 + return offset, nil + case uint24Type: + if len(rest) < 3 { + return offset, syntaxError{info.fieldName(), "truncated uint24"} + } + v.SetUint(uint64(data[0])<<16 | uint64(data[1])<<8 | uint64(data[2])) + offset += 3 + return offset, nil + case uint32Type: + if len(rest) < 4 { + return offset, syntaxError{info.fieldName(), "truncated uint32"} + } + v.SetUint(uint64(binary.BigEndian.Uint32(rest))) + offset += 4 + return offset, nil + case uint64Type: + if len(rest) < 8 { + return offset, syntaxError{info.fieldName(), "truncated uint64"} + } + v.SetUint(uint64(binary.BigEndian.Uint64(rest))) + offset += 8 + return offset, nil + } + + // Now deal with user-defined types. + switch v.Kind() { + case enumType.Kind(): + // Assume that anything of the same kind as Enum is an Enum, so that + // users can alias types of their own to Enum. + val, err := readVarUint(rest, info) + if err != nil { + return offset, err + } + v.SetUint(val) + offset += int(info.count) + return offset, nil + case reflect.Struct: + structType := fieldType + // TLS includes a select(Enum) {..} construct, where the value of an enum + // indicates which variant field is present (like a C union). We require + // that the enum value be an earlier field in the same structure (the selector), + // and that each of the possible variant destination fields be pointers. + // So the Go mapping looks like: + // type variantType struct { + // Which tls.Enum `tls:"size:1"` // this is the selector + // Val1 *type1 `tls:"selector:Which,val:1"` // this is a destination + // Val2 *type2 `tls:"selector:Which,val:1"` // this is a destination + // } + + // To deal with this, we track any enum-like fields and their values... + enums := make(map[string]uint64) + // .. and we track which selector names we've seen (in the destination field tags), + // and whether a destination for that selector has been chosen. + selectorSeen := make(map[string]bool) + for i := 0; i < structType.NumField(); i++ { + // Find information about this field. + tag := structType.Field(i).Tag.Get("tls") + fieldInfo, err := fieldTagToFieldInfo(tag, structType.Field(i).Name) + if err != nil { + return offset, err + } + + destination := v.Field(i) + if fieldInfo.selector != "" { + // This is a possible select(Enum) destination, so first check that the referenced + // selector field has already been seen earlier in the struct. + choice, ok := enums[fieldInfo.selector] + if !ok { + return offset, structuralError{fieldInfo.name, "selector not seen: " + fieldInfo.selector} + } + if structType.Field(i).Type.Kind() != reflect.Ptr { + return offset, structuralError{fieldInfo.name, "choice field not a pointer type"} + } + // Is this the first mention of the selector field name? If so, remember it. + seen, ok := selectorSeen[fieldInfo.selector] + if !ok { + selectorSeen[fieldInfo.selector] = false + } + if choice != fieldInfo.val { + // This destination field was not the chosen one, so make it nil (we checked + // it was a pointer above). + v.Field(i).Set(reflect.Zero(structType.Field(i).Type)) + continue + } + if seen { + // We already saw a different destination field receive the value for this + // selector value, which indicates a badly annotated structure. + return offset, structuralError{fieldInfo.name, "duplicate selector value for " + fieldInfo.selector} + } + selectorSeen[fieldInfo.selector] = true + // Make an object of the pointed-to type and parse into that. + v.Field(i).Set(reflect.New(structType.Field(i).Type.Elem())) + destination = v.Field(i).Elem() + } + offset, err = parseField(destination, data, offset, fieldInfo) + if err != nil { + return offset, err + } + + // Remember any possible tls.Enum values encountered in case they are selectors. + if structType.Field(i).Type.Kind() == enumType.Kind() { + enums[structType.Field(i).Name] = v.Field(i).Uint() + } + + } + + // Now we have seen all fields in the structure, check that all select(Enum) {..} selector + // fields found a destination to put their data in. + for selector, seen := range selectorSeen { + if !seen { + return offset, syntaxError{info.fieldName(), selector + ": unhandled value for selector"} + } + } + return offset, nil + case reflect.Array: + datalen := v.Len() + + if datalen > len(rest) { + return offset, syntaxError{info.fieldName(), "truncated array"} + } + inner := rest[:datalen] + offset += datalen + if fieldType.Elem().Kind() != reflect.Uint8 { + // Only byte/uint8 arrays are supported + return offset, structuralError{info.fieldName(), "unsupported array type: " + v.Type().String()} + } + reflect.Copy(v, reflect.ValueOf(inner)) + return offset, nil + + case reflect.Slice: + sliceType := fieldType + // Slices represent variable-length vectors, which are prefixed by a length field. + // The fieldInfo indicates the size of that length field. + varlen, err := readVarUint(rest, info) + if err != nil { + return offset, err + } + datalen := int(varlen) + offset += int(info.count) + rest = rest[info.count:] + + if datalen > len(rest) { + return offset, syntaxError{info.fieldName(), "truncated slice"} + } + inner := rest[:datalen] + offset += datalen + if fieldType.Elem().Kind() == reflect.Uint8 { + // Fast version for []byte + v.Set(reflect.MakeSlice(sliceType, datalen, datalen)) + reflect.Copy(v, reflect.ValueOf(inner)) + return offset, nil + } + + v.Set(reflect.MakeSlice(sliceType, 0, datalen)) + single := reflect.New(sliceType.Elem()) + for innerOffset := 0; innerOffset < len(inner); { + var err error + innerOffset, err = parseField(single.Elem(), inner, innerOffset, nil) + if err != nil { + return offset, err + } + v.Set(reflect.Append(v, single.Elem())) + } + return offset, nil + + default: + return offset, structuralError{info.fieldName(), fmt.Sprintf("unsupported type: %s of kind %s", fieldType, v.Kind())} + } +} + +// Marshal returns the TLS encoding of val. +func Marshal(val interface{}) ([]byte, error) { + return MarshalWithParams(val, "") +} + +// MarshalWithParams returns the TLS encoding of val, and allows field +// parameters to be specified for the top-level element. The form +// of the params is the same as the field tags. +func MarshalWithParams(val interface{}, params string) ([]byte, error) { + info, err := fieldTagToFieldInfo(params, "") + if err != nil { + return nil, err + } + var out bytes.Buffer + v := reflect.ValueOf(val) + if err := marshalField(&out, v, info); err != nil { + return nil, err + } + return out.Bytes(), err +} + +func marshalField(out *bytes.Buffer, v reflect.Value, info *fieldInfo) error { + var prefix string + if info != nil && len(info.name) > 0 { + prefix = info.name + ": " + } + fieldType := v.Type() + // First look for known fixed types. + switch fieldType { + case uint8Type: + out.WriteByte(byte(v.Uint())) + return nil + case uint16Type: + scratch := make([]byte, 2) + binary.BigEndian.PutUint16(scratch, uint16(v.Uint())) + out.Write(scratch) + return nil + case uint24Type: + i := v.Uint() + if i > 0xffffff { + return structuralError{info.fieldName(), fmt.Sprintf("uint24 overflow %d", i)} + } + scratch := make([]byte, 4) + binary.BigEndian.PutUint32(scratch, uint32(i)) + out.Write(scratch[1:]) + return nil + case uint32Type: + scratch := make([]byte, 4) + binary.BigEndian.PutUint32(scratch, uint32(v.Uint())) + out.Write(scratch) + return nil + case uint64Type: + scratch := make([]byte, 8) + binary.BigEndian.PutUint64(scratch, uint64(v.Uint())) + out.Write(scratch) + return nil + } + + // Now deal with user-defined types. + switch v.Kind() { + case enumType.Kind(): + i := v.Uint() + if info == nil { + return structuralError{info.fieldName(), "enum field tag missing"} + } + if err := info.check(i, prefix); err != nil { + return err + } + scratch := make([]byte, 8) + binary.BigEndian.PutUint64(scratch, uint64(i)) + out.Write(scratch[(8 - info.count):]) + return nil + case reflect.Struct: + structType := fieldType + enums := make(map[string]uint64) // Values of any Enum fields + // The comment parseField() describes the mapping of the TLS select(Enum) {..} construct; + // here we have selector and source (rather than destination) fields. + + // Track which selector names we've seen (in the source field tags), and whether a source + // value for that selector has been processed. + selectorSeen := make(map[string]bool) + for i := 0; i < structType.NumField(); i++ { + // Find information about this field. + tag := structType.Field(i).Tag.Get("tls") + fieldInfo, err := fieldTagToFieldInfo(tag, structType.Field(i).Name) + if err != nil { + return err + } + + source := v.Field(i) + if fieldInfo.selector != "" { + // This field is a possible source for a select(Enum) {..}. First check + // the selector field name has been seen. + choice, ok := enums[fieldInfo.selector] + if !ok { + return structuralError{fieldInfo.name, "selector not seen: " + fieldInfo.selector} + } + if structType.Field(i).Type.Kind() != reflect.Ptr { + return structuralError{fieldInfo.name, "choice field not a pointer type"} + } + // Is this the first mention of the selector field name? If so, remember it. + seen, ok := selectorSeen[fieldInfo.selector] + if !ok { + selectorSeen[fieldInfo.selector] = false + } + if choice != fieldInfo.val { + // This source was not chosen; police that it should be nil. + if v.Field(i).Pointer() != uintptr(0) { + return structuralError{fieldInfo.name, "unchosen field is non-nil"} + } + continue + } + if seen { + // We already saw a different source field generate the value for this + // selector value, which indicates a badly annotated structure. + return structuralError{fieldInfo.name, "duplicate selector value for " + fieldInfo.selector} + } + selectorSeen[fieldInfo.selector] = true + if v.Field(i).Pointer() == uintptr(0) { + return structuralError{fieldInfo.name, "chosen field is nil"} + } + // Marshal from the pointed-to source object. + source = v.Field(i).Elem() + } + + var fieldData bytes.Buffer + if err := marshalField(&fieldData, source, fieldInfo); err != nil { + return err + } + out.Write(fieldData.Bytes()) + + // Remember any tls.Enum values encountered in case they are selectors. + if structType.Field(i).Type.Kind() == enumType.Kind() { + enums[structType.Field(i).Name] = v.Field(i).Uint() + } + } + // Now we have seen all fields in the structure, check that all select(Enum) {..} selector + // fields found a source field get get their data from. + for selector, seen := range selectorSeen { + if !seen { + return syntaxError{info.fieldName(), selector + ": unhandled value for selector"} + } + } + return nil + + case reflect.Array: + datalen := v.Len() + arrayType := fieldType + if arrayType.Elem().Kind() != reflect.Uint8 { + // Only byte/uint8 arrays are supported + return structuralError{info.fieldName(), "unsupported array type"} + } + bytes := make([]byte, datalen) + for i := 0; i < datalen; i++ { + bytes[i] = uint8(v.Index(i).Uint()) + } + _, err := out.Write(bytes) + return err + + case reflect.Slice: + if info == nil { + return structuralError{info.fieldName(), "slice field tag missing"} + } + + sliceType := fieldType + if sliceType.Elem().Kind() == reflect.Uint8 { + // Fast version for []byte: first write the length as info.count bytes. + datalen := v.Len() + scratch := make([]byte, 8) + binary.BigEndian.PutUint64(scratch, uint64(datalen)) + out.Write(scratch[(8 - info.count):]) + + if err := info.check(uint64(datalen), prefix); err != nil { + return err + } + // Then just write the data. + bytes := make([]byte, datalen) + for i := 0; i < datalen; i++ { + bytes[i] = uint8(v.Index(i).Uint()) + } + _, err := out.Write(bytes) + return err + } + // General version: use a separate Buffer to write the slice entries into. + var innerBuf bytes.Buffer + for i := 0; i < v.Len(); i++ { + if err := marshalField(&innerBuf, v.Index(i), nil); err != nil { + return err + } + } + + // Now insert (and check) the size. + size := uint64(innerBuf.Len()) + if err := info.check(size, prefix); err != nil { + return err + } + scratch := make([]byte, 8) + binary.BigEndian.PutUint64(scratch, size) + out.Write(scratch[(8 - info.count):]) + + // Then copy the data. + _, err := out.Write(innerBuf.Bytes()) + return err + + default: + return structuralError{info.fieldName(), fmt.Sprintf("unsupported type: %s of kind %s", fieldType, v.Kind())} + } +} diff --git a/vendor/github.com/google/certificate-transparency-go/tls/types.go b/vendor/github.com/google/certificate-transparency-go/tls/types.go new file mode 100644 index 00000000000..53d8ec7aa72 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/tls/types.go @@ -0,0 +1,96 @@ +// Copyright 2016 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package tls + +import "fmt" + +// DigitallySigned gives information about a signature, including the algorithm used +// and the signature value. Defined in RFC 5246 s4.7. +type DigitallySigned struct { + Algorithm SignatureAndHashAlgorithm + Signature []byte `tls:"minlen:0,maxlen:65535"` +} + +func (d DigitallySigned) String() string { + return fmt.Sprintf("Signature: HashAlgo=%v SignAlgo=%v Value=%x", d.Algorithm.Hash, d.Algorithm.Signature, d.Signature) +} + +// SignatureAndHashAlgorithm gives information about the algorithms used for a +// signature. Defined in RFC 5246 s7.4.1.4.1. +type SignatureAndHashAlgorithm struct { + Hash HashAlgorithm `tls:"maxval:255"` + Signature SignatureAlgorithm `tls:"maxval:255"` +} + +// HashAlgorithm enum from RFC 5246 s7.4.1.4.1. +type HashAlgorithm Enum + +// HashAlgorithm constants from RFC 5246 s7.4.1.4.1. +const ( + None HashAlgorithm = 0 + MD5 HashAlgorithm = 1 + SHA1 HashAlgorithm = 2 + SHA224 HashAlgorithm = 3 + SHA256 HashAlgorithm = 4 + SHA384 HashAlgorithm = 5 + SHA512 HashAlgorithm = 6 +) + +func (h HashAlgorithm) String() string { + switch h { + case None: + return "None" + case MD5: + return "MD5" + case SHA1: + return "SHA1" + case SHA224: + return "SHA224" + case SHA256: + return "SHA256" + case SHA384: + return "SHA384" + case SHA512: + return "SHA512" + default: + return fmt.Sprintf("UNKNOWN(%d)", h) + } +} + +// SignatureAlgorithm enum from RFC 5246 s7.4.1.4.1. +type SignatureAlgorithm Enum + +// SignatureAlgorithm constants from RFC 5246 s7.4.1.4.1. +const ( + Anonymous SignatureAlgorithm = 0 + RSA SignatureAlgorithm = 1 + DSA SignatureAlgorithm = 2 + ECDSA SignatureAlgorithm = 3 +) + +func (s SignatureAlgorithm) String() string { + switch s { + case Anonymous: + return "Anonymous" + case RSA: + return "RSA" + case DSA: + return "DSA" + case ECDSA: + return "ECDSA" + default: + return fmt.Sprintf("UNKNOWN(%d)", s) + } +} diff --git a/vendor/github.com/google/certificate-transparency-go/types.go b/vendor/github.com/google/certificate-transparency-go/types.go new file mode 100644 index 00000000000..c172ce03a7d --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/types.go @@ -0,0 +1,460 @@ +// Copyright 2015 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package ct holds core types and utilities for Certificate Transparency. +package ct + +import ( + "crypto/sha256" + "encoding/base64" + "encoding/json" + "fmt" + + "github.com/google/certificate-transparency-go/tls" + "github.com/google/certificate-transparency-go/x509" +) + +/////////////////////////////////////////////////////////////////////////////// +// The following structures represent those outlined in RFC6962; any section +// numbers mentioned refer to that RFC. +/////////////////////////////////////////////////////////////////////////////// + +// LogEntryType represents the LogEntryType enum from section 3.1: +// enum { x509_entry(0), precert_entry(1), (65535) } LogEntryType; +type LogEntryType tls.Enum // tls:"maxval:65535" + +// LogEntryType constants from section 3.1. +const ( + X509LogEntryType LogEntryType = 0 + PrecertLogEntryType LogEntryType = 1 + XJSONLogEntryType LogEntryType = 0x8000 // Experimental. Don't rely on this! +) + +func (e LogEntryType) String() string { + switch e { + case X509LogEntryType: + return "X509LogEntryType" + case PrecertLogEntryType: + return "PrecertLogEntryType" + case XJSONLogEntryType: + return "XJSONLogEntryType" + default: + return fmt.Sprintf("UnknownEntryType(%d)", e) + } +} + +// MerkleLeafType represents the MerkleLeafType enum from section 3.4: +// enum { timestamped_entry(0), (255) } MerkleLeafType; +type MerkleLeafType tls.Enum // tls:"maxval:255" + +// TimestampedEntryLeafType is the only defined MerkleLeafType constant from section 3.4. +const TimestampedEntryLeafType MerkleLeafType = 0 // Entry type for an SCT + +func (m MerkleLeafType) String() string { + switch m { + case TimestampedEntryLeafType: + return "TimestampedEntryLeafType" + default: + return fmt.Sprintf("UnknownLeafType(%d)", m) + } +} + +// Version represents the Version enum from section 3.2: +// enum { v1(0), (255) } Version; +type Version tls.Enum // tls:"maxval:255" + +// CT Version constants from section 3.2. +const ( + V1 Version = 0 +) + +func (v Version) String() string { + switch v { + case V1: + return "V1" + default: + return fmt.Sprintf("UnknownVersion(%d)", v) + } +} + +// SignatureType differentiates STH signatures from SCT signatures, see section 3.2. +// enum { certificate_timestamp(0), tree_hash(1), (255) } SignatureType; +type SignatureType tls.Enum // tls:"maxval:255" + +// SignatureType constants from section 3.2. +const ( + CertificateTimestampSignatureType SignatureType = 0 + TreeHashSignatureType SignatureType = 1 +) + +func (st SignatureType) String() string { + switch st { + case CertificateTimestampSignatureType: + return "CertificateTimestamp" + case TreeHashSignatureType: + return "TreeHash" + default: + return fmt.Sprintf("UnknownSignatureType(%d)", st) + } +} + +// ASN1Cert type for holding the raw DER bytes of an ASN.1 Certificate +// (section 3.1). +type ASN1Cert struct { + Data []byte `tls:"minlen:1,maxlen:16777215"` +} + +// LogID holds the hash of the Log's public key (section 3.2). +// TODO(pphaneuf): Users should be migrated to the one in the logid package. +type LogID struct { + KeyID [sha256.Size]byte +} + +// PreCert represents a Precertificate (section 3.2). +type PreCert struct { + IssuerKeyHash [sha256.Size]byte + TBSCertificate []byte `tls:"minlen:1,maxlen:16777215"` // DER-encoded TBSCertificate +} + +// CTExtensions is a representation of the raw bytes of any CtExtension +// structure (see section 3.2). +// nolint: golint +type CTExtensions []byte // tls:"minlen:0,maxlen:65535"` + +// MerkleTreeNode represents an internal node in the CT tree. +type MerkleTreeNode []byte + +// ConsistencyProof represents a CT consistency proof (see sections 2.1.2 and +// 4.4). +type ConsistencyProof []MerkleTreeNode + +// AuditPath represents a CT inclusion proof (see sections 2.1.1 and 4.5). +type AuditPath []MerkleTreeNode + +// LeafInput represents a serialized MerkleTreeLeaf structure. +type LeafInput []byte + +// DigitallySigned is a local alias for tls.DigitallySigned so that we can +// attach a MarshalJSON method. +type DigitallySigned tls.DigitallySigned + +// FromBase64String populates the DigitallySigned structure from the base64 data passed in. +// Returns an error if the base64 data is invalid. +func (d *DigitallySigned) FromBase64String(b64 string) error { + raw, err := base64.StdEncoding.DecodeString(b64) + if err != nil { + return fmt.Errorf("failed to unbase64 DigitallySigned: %v", err) + } + var ds tls.DigitallySigned + if rest, err := tls.Unmarshal(raw, &ds); err != nil { + return fmt.Errorf("failed to unmarshal DigitallySigned: %v", err) + } else if len(rest) > 0 { + return fmt.Errorf("trailing data (%d bytes) after DigitallySigned", len(rest)) + } + *d = DigitallySigned(ds) + return nil +} + +// Base64String returns the base64 representation of the DigitallySigned struct. +func (d DigitallySigned) Base64String() (string, error) { + b, err := tls.Marshal(d) + if err != nil { + return "", err + } + return base64.StdEncoding.EncodeToString(b), nil +} + +// MarshalJSON implements the json.Marshaller interface. +func (d DigitallySigned) MarshalJSON() ([]byte, error) { + b64, err := d.Base64String() + if err != nil { + return []byte{}, err + } + return []byte(`"` + b64 + `"`), nil +} + +// UnmarshalJSON implements the json.Unmarshaler interface. +func (d *DigitallySigned) UnmarshalJSON(b []byte) error { + var content string + if err := json.Unmarshal(b, &content); err != nil { + return fmt.Errorf("failed to unmarshal DigitallySigned: %v", err) + } + return d.FromBase64String(content) +} + +// LogEntry represents the (parsed) contents of an entry in a CT log. This is described +// in section 3.1, but note that this structure does *not* match the TLS structure +// defined there (the TLS structure is never used directly in RFC6962). +type LogEntry struct { + Index int64 + Leaf MerkleTreeLeaf + // Exactly one of the following three fields should be non-empty. + X509Cert *x509.Certificate // Parsed X.509 certificate + Precert *Precertificate // Extracted precertificate + JSONData []byte + + // Chain holds the issuing certificate chain, starting with the + // issuer of the leaf certificate / pre-certificate. + Chain []ASN1Cert +} + +// PrecertChainEntry holds an precertificate together with a validation chain +// for it; see section 3.1. +type PrecertChainEntry struct { + PreCertificate ASN1Cert `tls:"minlen:1,maxlen:16777215"` + CertificateChain []ASN1Cert `tls:"minlen:0,maxlen:16777215"` +} + +// CertificateChain holds a chain of certificates, as returned as extra data +// for get-entries (section 4.6). +type CertificateChain struct { + Entries []ASN1Cert `tls:"minlen:0,maxlen:16777215"` +} + +// JSONDataEntry holds arbitrary data. +type JSONDataEntry struct { + Data []byte `tls:"minlen:0,maxlen:1677215"` +} + +// SHA256Hash represents the output from the SHA256 hash function. +type SHA256Hash [sha256.Size]byte + +// FromBase64String populates the SHA256 struct with the contents of the base64 data passed in. +func (s *SHA256Hash) FromBase64String(b64 string) error { + bs, err := base64.StdEncoding.DecodeString(b64) + if err != nil { + return fmt.Errorf("failed to unbase64 LogID: %v", err) + } + if len(bs) != sha256.Size { + return fmt.Errorf("invalid SHA256 length, expected 32 but got %d", len(bs)) + } + copy(s[:], bs) + return nil +} + +// Base64String returns the base64 representation of this SHA256Hash. +func (s SHA256Hash) Base64String() string { + return base64.StdEncoding.EncodeToString(s[:]) +} + +// MarshalJSON implements the json.Marshaller interface for SHA256Hash. +func (s SHA256Hash) MarshalJSON() ([]byte, error) { + return []byte(`"` + s.Base64String() + `"`), nil +} + +// UnmarshalJSON implements the json.Unmarshaller interface. +func (s *SHA256Hash) UnmarshalJSON(b []byte) error { + var content string + if err := json.Unmarshal(b, &content); err != nil { + return fmt.Errorf("failed to unmarshal SHA256Hash: %v", err) + } + return s.FromBase64String(content) +} + +// SignedTreeHead represents the structure returned by the get-sth CT method +// after base64 decoding; see sections 3.5 and 4.3. +type SignedTreeHead struct { + Version Version `json:"sth_version"` // The version of the protocol to which the STH conforms + TreeSize uint64 `json:"tree_size"` // The number of entries in the new tree + Timestamp uint64 `json:"timestamp"` // The time at which the STH was created + SHA256RootHash SHA256Hash `json:"sha256_root_hash"` // The root hash of the log's Merkle tree + TreeHeadSignature DigitallySigned `json:"tree_head_signature"` // Log's signature over a TLS-encoded TreeHeadSignature + LogID SHA256Hash `json:"log_id"` // The SHA256 hash of the log's public key +} + +// TreeHeadSignature holds the data over which the signature in an STH is +// generated; see section 3.5 +type TreeHeadSignature struct { + Version Version `tls:"maxval:255"` + SignatureType SignatureType `tls:"maxval:255"` // == TreeHashSignatureType + Timestamp uint64 + TreeSize uint64 + SHA256RootHash SHA256Hash +} + +// SignedCertificateTimestamp represents the structure returned by the +// add-chain and add-pre-chain methods after base64 decoding; see sections +// 3.2, 4.1 and 4.2. +type SignedCertificateTimestamp struct { + SCTVersion Version `tls:"maxval:255"` + LogID LogID + Timestamp uint64 + Extensions CTExtensions `tls:"minlen:0,maxlen:65535"` + Signature DigitallySigned // Signature over TLS-encoded CertificateTimestamp +} + +// CertificateTimestamp is the collection of data that the signature in an +// SCT is over; see section 3.2. +type CertificateTimestamp struct { + SCTVersion Version `tls:"maxval:255"` + SignatureType SignatureType `tls:"maxval:255"` + Timestamp uint64 + EntryType LogEntryType `tls:"maxval:65535"` + X509Entry *ASN1Cert `tls:"selector:EntryType,val:0"` + PrecertEntry *PreCert `tls:"selector:EntryType,val:1"` + JSONEntry *JSONDataEntry `tls:"selector:EntryType,val:32768"` + Extensions CTExtensions `tls:"minlen:0,maxlen:65535"` +} + +func (s SignedCertificateTimestamp) String() string { + return fmt.Sprintf("{Version:%d LogId:%s Timestamp:%d Extensions:'%s' Signature:%v}", s.SCTVersion, + base64.StdEncoding.EncodeToString(s.LogID.KeyID[:]), + s.Timestamp, + s.Extensions, + s.Signature) +} + +// TimestampedEntry is part of the MerkleTreeLeaf structure; see section 3.4. +type TimestampedEntry struct { + Timestamp uint64 + EntryType LogEntryType `tls:"maxval:65535"` + X509Entry *ASN1Cert `tls:"selector:EntryType,val:0"` + PrecertEntry *PreCert `tls:"selector:EntryType,val:1"` + JSONEntry *JSONDataEntry `tls:"selector:EntryType,val:32768"` + Extensions CTExtensions `tls:"minlen:0,maxlen:65535"` +} + +// MerkleTreeLeaf represents the deserialized structure of the hash input for the +// leaves of a log's Merkle tree; see section 3.4. +type MerkleTreeLeaf struct { + Version Version `tls:"maxval:255"` + LeafType MerkleLeafType `tls:"maxval:255"` + TimestampedEntry *TimestampedEntry `tls:"selector:LeafType,val:0"` +} + +// Precertificate represents the parsed CT Precertificate structure. +type Precertificate struct { + // DER-encoded pre-certificate as originally added, which includes a + // poison extension and a signature generated over the pre-cert by + // the pre-cert issuer (which might differ from the issuer of the final + // cert, see RFC6962 s3.1). + Submitted ASN1Cert + // SHA256 hash of the issuing key + IssuerKeyHash [sha256.Size]byte + // Parsed TBSCertificate structure, held in an x509.Certificate for convenience. + TBSCertificate *x509.Certificate +} + +// X509Certificate returns the X.509 Certificate contained within the +// MerkleTreeLeaf. +func (m *MerkleTreeLeaf) X509Certificate() (*x509.Certificate, error) { + if m.TimestampedEntry.EntryType != X509LogEntryType { + return nil, fmt.Errorf("cannot call X509Certificate on a MerkleTreeLeaf that is not an X509 entry") + } + return x509.ParseCertificate(m.TimestampedEntry.X509Entry.Data) +} + +// Precertificate returns the X.509 Precertificate contained within the MerkleTreeLeaf. +// +// The returned precertificate is embedded in an x509.Certificate, but is in the +// form stored internally in the log rather than the original submitted form +// (i.e. it does not include the poison extension and any changes to reflect the +// final certificate's issuer have been made; see x509.BuildPrecertTBS). +func (m *MerkleTreeLeaf) Precertificate() (*x509.Certificate, error) { + if m.TimestampedEntry.EntryType != PrecertLogEntryType { + return nil, fmt.Errorf("cannot call Precertificate on a MerkleTreeLeaf that is not a precert entry") + } + return x509.ParseTBSCertificate(m.TimestampedEntry.PrecertEntry.TBSCertificate) +} + +// URI paths for Log requests; see section 4. +const ( + AddChainPath = "/ct/v1/add-chain" + AddPreChainPath = "/ct/v1/add-pre-chain" + GetSTHPath = "/ct/v1/get-sth" + GetEntriesPath = "/ct/v1/get-entries" + GetProofByHashPath = "/ct/v1/get-proof-by-hash" + GetSTHConsistencyPath = "/ct/v1/get-sth-consistency" + GetRootsPath = "/ct/v1/get-roots" + GetEntryAndProofPath = "/ct/v1/get-entry-and-proof" + + AddJSONPath = "/ct/v1/add-json" // Experimental addition +) + +// AddChainRequest represents the JSON request body sent to the add-chain and +// add-pre-chain POST methods from sections 4.1 and 4.2. +type AddChainRequest struct { + Chain [][]byte `json:"chain"` +} + +// AddChainResponse represents the JSON response to the add-chain and +// add-pre-chain POST methods. +// An SCT represents a Log's promise to integrate a [pre-]certificate into the +// log within a defined period of time. +type AddChainResponse struct { + SCTVersion Version `json:"sct_version"` // SCT structure version + ID []byte `json:"id"` // Log ID + Timestamp uint64 `json:"timestamp"` // Timestamp of issuance + Extensions string `json:"extensions"` // Holder for any CT extensions + Signature []byte `json:"signature"` // Log signature for this SCT +} + +// AddJSONRequest represents the JSON request body sent to the add-json POST method. +// The corresponding response re-uses AddChainResponse. +// This is an experimental addition not covered by RFC6962. +type AddJSONRequest struct { + Data interface{} `json:"data"` +} + +// GetSTHResponse respresents the JSON response to the get-sth GET method from section 4.3. +type GetSTHResponse struct { + TreeSize uint64 `json:"tree_size"` // Number of certs in the current tree + Timestamp uint64 `json:"timestamp"` // Time that the tree was created + SHA256RootHash []byte `json:"sha256_root_hash"` // Root hash of the tree + TreeHeadSignature []byte `json:"tree_head_signature"` // Log signature for this STH +} + +// GetSTHConsistencyResponse represents the JSON response to the get-sth-consistency +// GET method from section 4.4. (The corresponding GET request has parameters 'first' and +// 'second'.) +type GetSTHConsistencyResponse struct { + Consistency [][]byte `json:"consistency"` +} + +// GetProofByHashResponse represents the JSON response to the get-proof-by-hash GET +// method from section 4.5. (The corresponding GET request has parameters 'hash' +// and 'tree_size'.) +type GetProofByHashResponse struct { + LeafIndex int64 `json:"leaf_index"` // The 0-based index of the end entity corresponding to the "hash" parameter. + AuditPath [][]byte `json:"audit_path"` // An array of base64-encoded Merkle Tree nodes proving the inclusion of the chosen certificate. +} + +// LeafEntry represents a leaf in the Log's Merkle tree, as returned by the get-entries +// GET method from section 4.6. +type LeafEntry struct { + // LeafInput is a TLS-encoded MerkleTreeLeaf + LeafInput []byte `json:"leaf_input"` + // ExtraData holds (unsigned) extra data, normally the cert validation chain. + ExtraData []byte `json:"extra_data"` +} + +// GetEntriesResponse respresents the JSON response to the get-entries GET method +// from section 4.6. +type GetEntriesResponse struct { + Entries []LeafEntry `json:"entries"` // the list of returned entries +} + +// GetRootsResponse represents the JSON response to the get-roots GET method from section 4.7. +type GetRootsResponse struct { + Certificates []string `json:"certificates"` +} + +// GetEntryAndProofResponse represents the JSON response to the get-entry-and-proof +// GET method from section 4.8. (The corresponding GET request has parameters 'leaf_index' +// and 'tree_size'.) +type GetEntryAndProofResponse struct { + LeafInput []byte `json:"leaf_input"` // the entry itself + ExtraData []byte `json:"extra_data"` // any chain provided when the entry was added to the log + AuditPath [][]byte `json:"audit_path"` // the corresponding proof +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/BUILD b/vendor/github.com/google/certificate-transparency-go/x509/BUILD new file mode 100644 index 00000000000..591bf621b31 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/BUILD @@ -0,0 +1,122 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +go_library( + name = "go_default_library", + srcs = [ + "cert_pool.go", + "error.go", + "errors.go", + "names.go", + "pem_decrypt.go", + "pkcs1.go", + "pkcs8.go", + "revoked.go", + "root.go", + "sec1.go", + "verify.go", + "x509.go", + ] + select({ + "@io_bazel_rules_go//go/platform:darwin": [ + "root_darwin.go", + "root_nocgo_darwin.go", + ], + "@io_bazel_rules_go//go/platform:dragonfly": [ + "root_bsd.go", + "root_unix.go", + ], + "@io_bazel_rules_go//go/platform:freebsd": [ + "root_bsd.go", + "root_unix.go", + ], + "@io_bazel_rules_go//go/platform:linux": [ + "root_linux.go", + "root_unix.go", + ], + "@io_bazel_rules_go//go/platform:nacl": [ + "root_nacl.go", + "root_unix.go", + ], + "@io_bazel_rules_go//go/platform:netbsd": [ + "root_bsd.go", + "root_unix.go", + ], + "@io_bazel_rules_go//go/platform:openbsd": [ + "root_bsd.go", + "root_unix.go", + ], + "@io_bazel_rules_go//go/platform:plan9": [ + "root_plan9.go", + ], + "@io_bazel_rules_go//go/platform:solaris": [ + "root_solaris.go", + "root_unix.go", + ], + "@io_bazel_rules_go//go/platform:windows": [ + "root_windows.go", + ], + "//conditions:default": [], + }) + select({ + "@io_bazel_rules_go//go/platform:darwin_386": [ + "nilref_nil_darwin.go", + "nilref_zero_darwin.go", + "root_cgo_darwin.go", + ], + "@io_bazel_rules_go//go/platform:darwin_amd64": [ + "nilref_nil_darwin.go", + "nilref_zero_darwin.go", + "root_cgo_darwin.go", + ], + "@io_bazel_rules_go//go/platform:darwin_arm": [ + "root_darwin_armx.go", + ], + "@io_bazel_rules_go//go/platform:darwin_arm64": [ + "root_darwin_armx.go", + ], + "//conditions:default": [], + }), + cgo = True, + clinkopts = select({ + "@io_bazel_rules_go//go/platform:darwin_386": [ + "-framework CoreFoundation -framework Security", + ], + "@io_bazel_rules_go//go/platform:darwin_amd64": [ + "-framework CoreFoundation -framework Security", + ], + "//conditions:default": [], + }), + copts = select({ + "@io_bazel_rules_go//go/platform:darwin_386": [ + "-mmacosx-version-min=10.6 -D__MAC_OS_X_VERSION_MAX_ALLOWED=1080", + ], + "@io_bazel_rules_go//go/platform:darwin_amd64": [ + "-mmacosx-version-min=10.6 -D__MAC_OS_X_VERSION_MAX_ALLOWED=1080", + ], + "//conditions:default": [], + }), + importpath = "github.com/google/certificate-transparency-go/x509", + visibility = ["//visibility:public"], + deps = [ + "//vendor/github.com/google/certificate-transparency-go/asn1:go_default_library", + "//vendor/github.com/google/certificate-transparency-go/tls:go_default_library", + "//vendor/github.com/google/certificate-transparency-go/x509/pkix:go_default_library", + "//vendor/golang.org/x/crypto/cryptobyte:go_default_library", + "//vendor/golang.org/x/crypto/cryptobyte/asn1:go_default_library", + ], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [ + ":package-srcs", + "//vendor/github.com/google/certificate-transparency-go/x509/pkix:all-srcs", + ], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/vendor/github.com/google/certificate-transparency/go/x509/cert_pool.go b/vendor/github.com/google/certificate-transparency-go/x509/cert_pool.go old mode 100755 new mode 100644 similarity index 73% rename from vendor/github.com/google/certificate-transparency/go/x509/cert_pool.go rename to vendor/github.com/google/certificate-transparency-go/x509/cert_pool.go index babe94d41c5..71ffbdf0e04 --- a/vendor/github.com/google/certificate-transparency/go/x509/cert_pool.go +++ b/vendor/github.com/google/certificate-transparency-go/x509/cert_pool.go @@ -6,6 +6,8 @@ package x509 import ( "encoding/pem" + "errors" + "runtime" ) // CertPool is a set of certificates. @@ -18,12 +20,24 @@ type CertPool struct { // NewCertPool returns a new, empty CertPool. func NewCertPool() *CertPool { return &CertPool{ - make(map[string][]int), - make(map[string][]int), - nil, + bySubjectKeyId: make(map[string][]int), + byName: make(map[string][]int), } } +// SystemCertPool returns a copy of the system cert pool. +// +// Any mutations to the returned pool are not written to disk and do +// not affect any other pool. +func SystemCertPool() (*CertPool, error) { + if runtime.GOOS == "windows" { + // Issue 16736, 18609: + return nil, errors.New("crypto/x509: system root pool is not available on Windows") + } + + return loadSystemRoots() +} + // findVerifiedParents attempts to find certificates in s which have signed the // given certificate. If any candidates were rejected then errCert will be set // to one of them, arbitrarily, and err will contain the reason that it was @@ -52,6 +66,21 @@ func (s *CertPool) findVerifiedParents(cert *Certificate) (parents []int, errCer return } +func (s *CertPool) contains(cert *Certificate) bool { + if s == nil { + return false + } + + candidates := s.byName[string(cert.RawSubject)] + for _, c := range candidates { + if s.certs[c].Equal(cert) { + return true + } + } + + return false +} + // AddCert adds a certificate to a pool. func (s *CertPool) AddCert(cert *Certificate) { if cert == nil { @@ -59,10 +88,8 @@ func (s *CertPool) AddCert(cert *Certificate) { } // Check that the certificate isn't being added twice. - for _, c := range s.certs { - if c.Equal(cert) { - return - } + if s.contains(cert) { + return } n := len(s.certs) @@ -77,7 +104,7 @@ func (s *CertPool) AddCert(cert *Certificate) { } // AppendCertsFromPEM attempts to parse a series of PEM encoded certificates. -// It appends any certificates found to s and returns true if any certificates +// It appends any certificates found to s and reports whether any certificates // were successfully parsed. // // On many Linux systems, /etc/ssl/cert.pem will contain the system wide set @@ -107,10 +134,10 @@ func (s *CertPool) AppendCertsFromPEM(pemCerts []byte) (ok bool) { // Subjects returns a list of the DER-encoded subjects of // all of the certificates in the pool. -func (s *CertPool) Subjects() (res [][]byte) { - res = make([][]byte, len(s.certs)) +func (s *CertPool) Subjects() [][]byte { + res := make([][]byte, len(s.certs)) for i, c := range s.certs { res[i] = c.RawSubject } - return + return res } diff --git a/vendor/github.com/google/certificate-transparency-go/x509/error.go b/vendor/github.com/google/certificate-transparency-go/x509/error.go new file mode 100644 index 00000000000..63360ec8e26 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/error.go @@ -0,0 +1,230 @@ +package x509 + +import ( + "bytes" + "fmt" + "strconv" + "strings" +) + +// Error implements the error interface and describes a single error in an X.509 certificate or CRL. +type Error struct { + ID ErrorID + Category ErrCategory + Summary string + Field string + SpecRef string + SpecText string + // Fatal indicates that parsing has been aborted. + Fatal bool +} + +func (err Error) Error() string { + var msg bytes.Buffer + if err.ID != ErrInvalidID { + if err.Fatal { + msg.WriteRune('E') + } else { + msg.WriteRune('W') + } + msg.WriteString(fmt.Sprintf("%03d: ", err.ID)) + } + msg.WriteString(err.Summary) + return msg.String() +} + +// VerboseError creates a more verbose error string, including spec details. +func (err Error) VerboseError() string { + var msg bytes.Buffer + msg.WriteString(err.Error()) + if len(err.Field) > 0 || err.Category != UnknownCategory || len(err.SpecRef) > 0 || len(err.SpecText) > 0 { + msg.WriteString(" (") + needSep := false + if len(err.Field) > 0 { + msg.WriteString(err.Field) + needSep = true + } + if err.Category != UnknownCategory { + if needSep { + msg.WriteString(": ") + } + msg.WriteString(err.Category.String()) + needSep = true + } + if len(err.SpecRef) > 0 { + if needSep { + msg.WriteString(": ") + } + msg.WriteString(err.SpecRef) + needSep = true + } + if len(err.SpecText) > 0 { + if needSep { + if len(err.SpecRef) > 0 { + msg.WriteString(", ") + } else { + msg.WriteString(": ") + } + } + msg.WriteString("'") + msg.WriteString(err.SpecText) + msg.WriteString("'") + } + msg.WriteString(")") + } + + return msg.String() +} + +// ErrCategory indicates the category of an x509.Error. +type ErrCategory int + +// ErrCategory values. +const ( + UnknownCategory ErrCategory = iota + // Errors in ASN.1 encoding + InvalidASN1Encoding + InvalidASN1Content + InvalidASN1DER + // Errors in ASN.1 relative to schema + InvalidValueRange + InvalidASN1Type + UnexpectedAdditionalData + // Errors in X.509 + PoorlyFormedCertificate // Fails a SHOULD clause + MalformedCertificate // Fails a MUST clause + PoorlyFormedCRL // Fails a SHOULD clause + MalformedCRL // Fails a MUST clause + // Errors relative to CA/Browser Forum guidelines + BaselineRequirementsFailure + EVRequirementsFailure + // Other errors + InsecureAlgorithm + UnrecognizedValue +) + +func (category ErrCategory) String() string { + switch category { + case InvalidASN1Encoding: + return "Invalid ASN.1 encoding" + case InvalidASN1Content: + return "Invalid ASN.1 content" + case InvalidASN1DER: + return "Invalid ASN.1 distinguished encoding" + case InvalidValueRange: + return "Invalid value for range given in schema" + case InvalidASN1Type: + return "Invalid ASN.1 type for schema" + case UnexpectedAdditionalData: + return "Unexpected additional data present" + case PoorlyFormedCertificate: + return "Certificate does not comply with SHOULD clause in spec" + case MalformedCertificate: + return "Certificate does not comply with MUST clause in spec" + case PoorlyFormedCRL: + return "Certificate Revocation List does not comply with SHOULD clause in spec" + case MalformedCRL: + return "Certificate Revocation List does not comply with MUST clause in spec" + case BaselineRequirementsFailure: + return "Certificate does not comply with CA/BF baseline requirements" + case EVRequirementsFailure: + return "Certificate does not comply with CA/BF EV requirements" + case InsecureAlgorithm: + return "Certificate uses an insecure algorithm" + case UnrecognizedValue: + return "Certificate uses an unrecognized value" + default: + return fmt.Sprintf("Unknown (%d)", category) + } +} + +// ErrorID is an identifier for an x509.Error, to allow filtering. +type ErrorID int + +// Errors implements the error interface and holds a collection of errors found in a certificate or CRL. +type Errors struct { + Errs []Error +} + +// Error converts to a string. +func (e *Errors) Error() string { + return e.combineErrors(Error.Error) +} + +// VerboseError creates a more verbose error string, including spec details. +func (e *Errors) VerboseError() string { + return e.combineErrors(Error.VerboseError) +} + +// Fatal indicates whether e includes a fatal error +func (e *Errors) Fatal() bool { + return (e.FirstFatal() != nil) +} + +// Empty indicates whether e has no errors. +func (e *Errors) Empty() bool { + return len(e.Errs) == 0 +} + +// FirstFatal returns the first fatal error in e, or nil +// if there is no fatal error. +func (e *Errors) FirstFatal() error { + for _, err := range e.Errs { + if err.Fatal { + return err + } + } + return nil + +} + +// AddID adds the Error identified by the given id to an x509.Errors. +func (e *Errors) AddID(id ErrorID, args ...interface{}) { + e.Errs = append(e.Errs, NewError(id, args...)) +} + +func (e Errors) combineErrors(errfn func(Error) string) string { + if len(e.Errs) == 0 { + return "" + } + if len(e.Errs) == 1 { + return errfn((e.Errs)[0]) + } + var msg bytes.Buffer + msg.WriteString("Errors:") + for _, err := range e.Errs { + msg.WriteString("\n ") + msg.WriteString(errfn(err)) + } + return msg.String() +} + +// Filter creates a new Errors object with any entries from the filtered +// list of IDs removed. +func (e Errors) Filter(filtered []ErrorID) Errors { + var results Errors +eloop: + for _, v := range e.Errs { + for _, f := range filtered { + if v.ID == f { + break eloop + } + } + results.Errs = append(results.Errs, v) + } + return results +} + +// ErrorFilter builds a list of error IDs (suitable for use with Errors.Filter) from a comma-separated string. +func ErrorFilter(ignore string) []ErrorID { + var ids []ErrorID + filters := strings.Split(ignore, ",") + for _, f := range filters { + v, err := strconv.Atoi(f) + if err != nil { + continue + } + ids = append(ids, ErrorID(v)) + } + return ids +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/errors.go b/vendor/github.com/google/certificate-transparency-go/x509/errors.go new file mode 100644 index 00000000000..ec2fe06a99f --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/errors.go @@ -0,0 +1,302 @@ +package x509 + +import "fmt" + +// To preserve error IDs, only append to this list, never insert. +const ( + ErrInvalidID ErrorID = iota + ErrInvalidCertList + ErrTrailingCertList + ErrUnexpectedlyCriticalCertListExtension + ErrUnexpectedlyNonCriticalCertListExtension + ErrInvalidCertListAuthKeyID + ErrTrailingCertListAuthKeyID + ErrInvalidCertListIssuerAltName + ErrInvalidCertListCRLNumber + ErrTrailingCertListCRLNumber + ErrNegativeCertListCRLNumber + ErrInvalidCertListDeltaCRL + ErrTrailingCertListDeltaCRL + ErrNegativeCertListDeltaCRL + ErrInvalidCertListIssuingDP + ErrTrailingCertListIssuingDP + ErrCertListIssuingDPMultipleTypes + ErrCertListIssuingDPInvalidFullName + ErrInvalidCertListFreshestCRL + ErrInvalidCertListAuthInfoAccess + ErrTrailingCertListAuthInfoAccess + ErrUnhandledCriticalCertListExtension + ErrUnexpectedlyCriticalRevokedCertExtension + ErrUnexpectedlyNonCriticalRevokedCertExtension + ErrInvalidRevocationReason + ErrTrailingRevocationReason + ErrInvalidRevocationInvalidityDate + ErrTrailingRevocationInvalidityDate + ErrInvalidRevocationIssuer + ErrUnhandledCriticalRevokedCertExtension + + ErrMaxID +) + +// idToError gives a template x509.Error for each defined ErrorID; where the Summary +// field may hold format specifiers that take field parameters. +var idToError map[ErrorID]Error + +var errorInfo = []Error{ + { + ID: ErrInvalidCertList, + Summary: "x509: failed to parse CertificateList: %v", + Field: "CertificateList", + SpecRef: "RFC 5280 s5.1", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrTrailingCertList, + Summary: "x509: trailing data after CertificateList", + Field: "CertificateList", + SpecRef: "RFC 5280 s5.1", + Category: InvalidASN1Content, + Fatal: true, + }, + + { + ID: ErrUnexpectedlyCriticalCertListExtension, + Summary: "x509: certificate list extension %v marked critical but expected to be non-critical", + Field: "tbsCertList.crlExtensions.*.critical", + SpecRef: "RFC 5280 s5.2", + Category: MalformedCRL, + }, + { + ID: ErrUnexpectedlyNonCriticalCertListExtension, + Summary: "x509: certificate list extension %v marked non-critical but expected to be critical", + Field: "tbsCertList.crlExtensions.*.critical", + SpecRef: "RFC 5280 s5.2", + Category: MalformedCRL, + }, + + { + ID: ErrInvalidCertListAuthKeyID, + Summary: "x509: failed to unmarshal certificate-list authority key-id: %v", + Field: "tbsCertList.crlExtensions.*.AuthorityKeyIdentifier", + SpecRef: "RFC 5280 s5.2.1", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrTrailingCertListAuthKeyID, + Summary: "x509: trailing data after certificate list auth key ID", + Field: "tbsCertList.crlExtensions.*.AuthorityKeyIdentifier", + SpecRef: "RFC 5280 s5.2.1", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrInvalidCertListIssuerAltName, + Summary: "x509: failed to parse CRL issuer alt name: %v", + Field: "tbsCertList.crlExtensions.*.IssuerAltName", + SpecRef: "RFC 5280 s5.2.2", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrInvalidCertListCRLNumber, + Summary: "x509: failed to unmarshal certificate-list crl-number: %v", + Field: "tbsCertList.crlExtensions.*.CRLNumber", + SpecRef: "RFC 5280 s5.2.3", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrTrailingCertListCRLNumber, + Summary: "x509: trailing data after certificate list crl-number", + Field: "tbsCertList.crlExtensions.*.CRLNumber", + SpecRef: "RFC 5280 s5.2.3", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrNegativeCertListCRLNumber, + Summary: "x509: negative certificate list crl-number: %d", + Field: "tbsCertList.crlExtensions.*.CRLNumber", + SpecRef: "RFC 5280 s5.2.3", + Category: MalformedCRL, + Fatal: true, + }, + { + ID: ErrInvalidCertListDeltaCRL, + Summary: "x509: failed to unmarshal certificate-list delta-crl: %v", + Field: "tbsCertList.crlExtensions.*.BaseCRLNumber", + SpecRef: "RFC 5280 s5.2.4", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrTrailingCertListDeltaCRL, + Summary: "x509: trailing data after certificate list delta-crl", + Field: "tbsCertList.crlExtensions.*.BaseCRLNumber", + SpecRef: "RFC 5280 s5.2.4", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrNegativeCertListDeltaCRL, + Summary: "x509: negative certificate list base-crl-number: %d", + Field: "tbsCertList.crlExtensions.*.BaseCRLNumber", + SpecRef: "RFC 5280 s5.2.4", + Category: MalformedCRL, + Fatal: true, + }, + { + ID: ErrInvalidCertListIssuingDP, + Summary: "x509: failed to unmarshal certificate list issuing distribution point: %v", + Field: "tbsCertList.crlExtensions.*.IssuingDistributionPoint", + SpecRef: "RFC 5280 s5.2.5", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrTrailingCertListIssuingDP, + Summary: "x509: trailing data after certificate list issuing distribution point", + Field: "tbsCertList.crlExtensions.*.IssuingDistributionPoint", + SpecRef: "RFC 5280 s5.2.5", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrCertListIssuingDPMultipleTypes, + Summary: "x509: multiple cert types set in issuing-distribution-point: user:%v CA:%v attr:%v", + Field: "tbsCertList.crlExtensions.*.IssuingDistributionPoint", + SpecRef: "RFC 5280 s5.2.5", + SpecText: "at most one of onlyContainsUserCerts, onlyContainsCACerts, and onlyContainsAttributeCerts may be set to TRUE.", + Category: MalformedCRL, + Fatal: true, + }, + { + ID: ErrCertListIssuingDPInvalidFullName, + Summary: "x509: failed to parse CRL issuing-distribution-point fullName: %v", + Field: "tbsCertList.crlExtensions.*.IssuingDistributionPoint.distributionPoint", + SpecRef: "RFC 5280 s5.2.5", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrInvalidCertListFreshestCRL, + Summary: "x509: failed to unmarshal certificate list freshestCRL: %v", + Field: "tbsCertList.crlExtensions.*.FreshestCRL", + SpecRef: "RFC 5280 s5.2.6", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrInvalidCertListAuthInfoAccess, + Summary: "x509: failed to unmarshal certificate list authority info access: %v", + Field: "tbsCertList.crlExtensions.*.AuthorityInfoAccess", + SpecRef: "RFC 5280 s5.2.7", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrTrailingCertListAuthInfoAccess, + Summary: "x509: trailing data after certificate list authority info access", + Field: "tbsCertList.crlExtensions.*.AuthorityInfoAccess", + SpecRef: "RFC 5280 s5.2.7", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrUnhandledCriticalCertListExtension, + Summary: "x509: unhandled critical extension in certificate list: %v", + Field: "tbsCertList.revokedCertificates.crlExtensions.*", + SpecRef: "RFC 5280 s5.2", + SpecText: "If a CRL contains a critical extension that the application cannot process, then the application MUST NOT use that CRL to determine the status of certificates.", + Category: MalformedCRL, + Fatal: true, + }, + + { + ID: ErrUnexpectedlyCriticalRevokedCertExtension, + Summary: "x509: revoked certificate extension %v marked critical but expected to be non-critical", + Field: "tbsCertList.revokedCertificates.crlEntryExtensions.*.critical", + SpecRef: "RFC 5280 s5.3", + Category: MalformedCRL, + }, + { + ID: ErrUnexpectedlyNonCriticalRevokedCertExtension, + Summary: "x509: revoked certificate extension %v marked non-critical but expected to be critical", + Field: "tbsCertList.revokedCertificates.crlEntryExtensions.*.critical", + SpecRef: "RFC 5280 s5.3", + Category: MalformedCRL, + }, + + { + ID: ErrInvalidRevocationReason, + Summary: "x509: failed to parse revocation reason: %v", + Field: "tbsCertList.revokedCertificates.crlEntryExtensions.*.CRLReason", + SpecRef: "RFC 5280 s5.3.1", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrTrailingRevocationReason, + Summary: "x509: trailing data after revoked certificate reason", + Field: "tbsCertList.revokedCertificates.crlEntryExtensions.*.CRLReason", + SpecRef: "RFC 5280 s5.3.1", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrInvalidRevocationInvalidityDate, + Summary: "x509: failed to parse revoked certificate invalidity date: %v", + Field: "tbsCertList.revokedCertificates.crlEntryExtensions.*.InvalidityDate", + SpecRef: "RFC 5280 s5.3.2", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrTrailingRevocationInvalidityDate, + Summary: "x509: trailing data after revoked certificate invalidity date", + Field: "tbsCertList.revokedCertificates.crlEntryExtensions.*.InvalidityDate", + SpecRef: "RFC 5280 s5.3.2", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrInvalidRevocationIssuer, + Summary: "x509: failed to parse revocation issuer %v", + Field: "tbsCertList.revokedCertificates.crlEntryExtensions.*.CertificateIssuer", + SpecRef: "RFC 5280 s5.3.3", + Category: InvalidASN1Content, + Fatal: true, + }, + { + ID: ErrUnhandledCriticalRevokedCertExtension, + Summary: "x509: unhandled critical extension in revoked certificate: %v", + Field: "tbsCertList.revokedCertificates.crlEntryExtensions.*", + SpecRef: "RFC 5280 s5.3", + SpecText: "If a CRL contains a critical CRL entry extension that the application cannot process, then the application MUST NOT use that CRL to determine the status of any certificates.", + Category: MalformedCRL, + Fatal: true, + }, +} + +func init() { + idToError = make(map[ErrorID]Error, len(errorInfo)) + for _, info := range errorInfo { + idToError[info.ID] = info + } +} + +// NewError builds a new x509.Error based on the template for the given id. +func NewError(id ErrorID, args ...interface{}) Error { + var err Error + if id >= ErrMaxID { + err.ID = id + err.Summary = fmt.Sprintf("Unknown error ID %v: args %+v", id, args) + err.Fatal = true + } else { + err = idToError[id] + err.Summary = fmt.Sprintf(err.Summary, args...) + } + return err +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/names.go b/vendor/github.com/google/certificate-transparency-go/x509/names.go new file mode 100644 index 00000000000..3ff0b7d4286 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/names.go @@ -0,0 +1,164 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package x509 + +import ( + "fmt" + "net" + + "github.com/google/certificate-transparency-go/asn1" + "github.com/google/certificate-transparency-go/x509/pkix" +) + +const ( + // GeneralName tag values from RFC 5280, 4.2.1.6 + tagOtherName = 0 + tagRFC822Name = 1 + tagDNSName = 2 + tagX400Address = 3 + tagDirectoryName = 4 + tagEDIPartyName = 5 + tagURI = 6 + tagIPAddress = 7 + tagRegisteredID = 8 +) + +// OtherName describes a name related to a certificate which is not in one +// of the standard name formats. RFC 5280, 4.2.1.6: +// OtherName ::= SEQUENCE { +// type-id OBJECT IDENTIFIER, +// value [0] EXPLICIT ANY DEFINED BY type-id } +type OtherName struct { + TypeID asn1.ObjectIdentifier + Value asn1.RawValue +} + +// GeneralNames holds a collection of names related to a certificate. +type GeneralNames struct { + DNSNames []string + EmailAddresses []string + DirectoryNames []pkix.Name + URIs []string + IPNets []net.IPNet + RegisteredIDs []asn1.ObjectIdentifier + OtherNames []OtherName +} + +// Len returns the total number of names in a GeneralNames object. +func (gn GeneralNames) Len() int { + return (len(gn.DNSNames) + len(gn.EmailAddresses) + len(gn.DirectoryNames) + + len(gn.URIs) + len(gn.IPNets) + len(gn.RegisteredIDs) + len(gn.OtherNames)) +} + +// Empty indicates whether a GeneralNames object is empty. +func (gn GeneralNames) Empty() bool { + return gn.Len() == 0 +} + +func parseGeneralNames(value []byte, gname *GeneralNames) error { + // RFC 5280, 4.2.1.6 + // GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName + // + // GeneralName ::= CHOICE { + // otherName [0] OtherName, + // rfc822Name [1] IA5String, + // dNSName [2] IA5String, + // x400Address [3] ORAddress, + // directoryName [4] Name, + // ediPartyName [5] EDIPartyName, + // uniformResourceIdentifier [6] IA5String, + // iPAddress [7] OCTET STRING, + // registeredID [8] OBJECT IDENTIFIER } + var seq asn1.RawValue + var rest []byte + if rest, err := asn1.Unmarshal(value, &seq); err != nil { + return fmt.Errorf("x509: failed to parse GeneralNames: %v", err) + } else if len(rest) != 0 { + return fmt.Errorf("x509: trailing data after GeneralNames") + } + if !seq.IsCompound || seq.Tag != asn1.TagSequence || seq.Class != asn1.ClassUniversal { + return fmt.Errorf("x509: failed to parse GeneralNames sequence, tag %+v", seq) + } + + rest = seq.Bytes + for len(rest) > 0 { + var err error + rest, err = parseGeneralName(rest, gname, false) + if err != nil { + return fmt.Errorf("x509: failed to parse GeneralName: %v", err) + } + } + return nil +} + +func parseGeneralName(data []byte, gname *GeneralNames, withMask bool) ([]byte, error) { + var v asn1.RawValue + var rest []byte + var err error + rest, err = asn1.Unmarshal(data, &v) + if err != nil { + return nil, fmt.Errorf("x509: failed to unmarshal GeneralNames: %v", err) + } + switch v.Tag { + case tagOtherName: + if !v.IsCompound { + return nil, fmt.Errorf("x509: failed to unmarshal GeneralNames.otherName: not compound") + } + var other OtherName + v.FullBytes = append([]byte{}, v.FullBytes...) + v.FullBytes[0] = asn1.TagSequence | 0x20 + _, err = asn1.Unmarshal(v.FullBytes, &other) + if err != nil { + return nil, fmt.Errorf("x509: failed to unmarshal GeneralNames.otherName: %v", err) + } + gname.OtherNames = append(gname.OtherNames, other) + case tagRFC822Name: + gname.EmailAddresses = append(gname.EmailAddresses, string(v.Bytes)) + case tagDNSName: + dns := string(v.Bytes) + gname.DNSNames = append(gname.DNSNames, dns) + case tagDirectoryName: + var rdnSeq pkix.RDNSequence + if _, err := asn1.Unmarshal(v.Bytes, &rdnSeq); err != nil { + return nil, fmt.Errorf("x509: failed to unmarshal GeneralNames.directoryName: %v", err) + } + var dirName pkix.Name + dirName.FillFromRDNSequence(&rdnSeq) + gname.DirectoryNames = append(gname.DirectoryNames, dirName) + case tagURI: + gname.URIs = append(gname.URIs, string(v.Bytes)) + case tagIPAddress: + vlen := len(v.Bytes) + if withMask { + switch vlen { + case (2 * net.IPv4len), (2 * net.IPv6len): + ipNet := net.IPNet{IP: v.Bytes[0 : vlen/2], Mask: v.Bytes[vlen/2:]} + gname.IPNets = append(gname.IPNets, ipNet) + default: + return nil, fmt.Errorf("x509: invalid IP/mask length %d in GeneralNames.iPAddress", vlen) + } + } else { + switch vlen { + case net.IPv4len, net.IPv6len: + ipNet := net.IPNet{IP: v.Bytes} + gname.IPNets = append(gname.IPNets, ipNet) + default: + return nil, fmt.Errorf("x509: invalid IP length %d in GeneralNames.iPAddress", vlen) + } + } + case tagRegisteredID: + var oid asn1.ObjectIdentifier + v.FullBytes = append([]byte{}, v.FullBytes...) + v.FullBytes[0] = asn1.TagOID + _, err = asn1.Unmarshal(v.FullBytes, &oid) + if err != nil { + return nil, fmt.Errorf("x509: failed to unmarshal GeneralNames.registeredID: %v", err) + } + gname.RegisteredIDs = append(gname.RegisteredIDs, oid) + default: + return nil, fmt.Errorf("x509: failed to unmarshal GeneralName: unknown tag %d", v.Tag) + } + return rest, nil +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/nilref_nil_darwin.go b/vendor/github.com/google/certificate-transparency-go/x509/nilref_nil_darwin.go new file mode 100644 index 00000000000..d3e8af7729c --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/nilref_nil_darwin.go @@ -0,0 +1,26 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build cgo,!arm,!arm64,!ios,!go1.10 + +package x509 + +/* +#cgo CFLAGS: -mmacosx-version-min=10.6 -D__MAC_OS_X_VERSION_MAX_ALLOWED=1080 +#cgo LDFLAGS: -framework CoreFoundation -framework Security + +#include +*/ +import "C" + +// For Go versions before 1.10, nil values for Apple's CoreFoundation +// CF*Ref types were represented by nil. See: +// https://github.com/golang/go/commit/b868616b63a8 +func setNilCFRef(v *C.CFDataRef) { + *v = nil +} + +func isNilCFRef(v C.CFDataRef) bool { + return v == nil +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/nilref_zero_darwin.go b/vendor/github.com/google/certificate-transparency-go/x509/nilref_zero_darwin.go new file mode 100644 index 00000000000..6d8ad49866e --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/nilref_zero_darwin.go @@ -0,0 +1,26 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build cgo,!arm,!arm64,!ios,go1.10 + +package x509 + +/* +#cgo CFLAGS: -mmacosx-version-min=10.6 -D__MAC_OS_X_VERSION_MAX_ALLOWED=1080 +#cgo LDFLAGS: -framework CoreFoundation -framework Security + +#include +*/ +import "C" + +// For Go versions >= 1.10, nil values for Apple's CoreFoundation +// CF*Ref types are represented by zero. See: +// https://github.com/golang/go/commit/b868616b63a8 +func setNilCFRef(v *C.CFDataRef) { + *v = 0 +} + +func isNilCFRef(v C.CFDataRef) bool { + return v == 0 +} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/pem_decrypt.go b/vendor/github.com/google/certificate-transparency-go/x509/pem_decrypt.go old mode 100755 new mode 100644 similarity index 93% rename from vendor/github.com/google/certificate-transparency/go/x509/pem_decrypt.go rename to vendor/github.com/google/certificate-transparency-go/x509/pem_decrypt.go index 194c81bf688..0388d63e149 --- a/vendor/github.com/google/certificate-transparency/go/x509/pem_decrypt.go +++ b/vendor/github.com/google/certificate-transparency-go/x509/pem_decrypt.go @@ -42,7 +42,7 @@ type rfc1423Algo struct { } // rfc1423Algos holds a slice of the possible ways to encrypt a PEM -// block. The ivSize numbers were taken from the OpenSSL source. +// block. The ivSize numbers were taken from the OpenSSL source. var rfc1423Algos = []rfc1423Algo{{ cipher: PEMCipherDES, name: "DES-CBC", @@ -108,7 +108,10 @@ var IncorrectPasswordError = errors.New("x509: decryption password incorrect") // encrypt it and returns a slice of decrypted DER encoded bytes. It inspects // the DEK-Info header to determine the algorithm used for decryption. If no // DEK-Info header is present, an error is returned. If an incorrect password -// is detected an IncorrectPasswordError is returned. +// is detected an IncorrectPasswordError is returned. Because of deficiencies +// in the encrypted-PEM format, it's not always possible to detect an incorrect +// password. In these cases no error will be returned but the decrypted DER +// bytes will be random noise. func DecryptPEMBlock(b *pem.Block, password []byte) ([]byte, error) { dek, ok := b.Headers["DEK-Info"] if !ok { @@ -141,6 +144,10 @@ func DecryptPEMBlock(b *pem.Block, password []byte) ([]byte, error) { return nil, err } + if len(b.Bytes)%block.BlockSize() != 0 { + return nil, errors.New("x509: encrypted PEM data is not a multiple of the block size") + } + data := make([]byte, len(b.Bytes)) dec := cipher.NewCBCDecrypter(block, iv) dec.CryptBlocks(data, b.Bytes) diff --git a/vendor/github.com/google/certificate-transparency/go/x509/pkcs1.go b/vendor/github.com/google/certificate-transparency-go/x509/pkcs1.go old mode 100755 new mode 100644 similarity index 69% rename from vendor/github.com/google/certificate-transparency/go/x509/pkcs1.go rename to vendor/github.com/google/certificate-transparency-go/x509/pkcs1.go index 638bc671468..e50e1a85170 --- a/vendor/github.com/google/certificate-transparency/go/x509/pkcs1.go +++ b/vendor/github.com/google/certificate-transparency-go/x509/pkcs1.go @@ -6,11 +6,10 @@ package x509 import ( "crypto/rsa" - // START CT CHANGES - "github.com/google/certificate-transparency/go/asn1" - // END CT CHANGES "errors" "math/big" + + "github.com/google/certificate-transparency-go/asn1" ) // pkcs1PrivateKey is a structure which mirrors the PKCS#1 ASN.1 for an RSA private key. @@ -37,16 +36,21 @@ type pkcs1AdditionalRSAPrime struct { Coeff *big.Int } +// pkcs1PublicKey reflects the ASN.1 structure of a PKCS#1 public key. +type pkcs1PublicKey struct { + N *big.Int + E int +} + // ParsePKCS1PrivateKey returns an RSA private key from its ASN.1 PKCS#1 DER encoded form. -func ParsePKCS1PrivateKey(der []byte) (key *rsa.PrivateKey, err error) { +func ParsePKCS1PrivateKey(der []byte) (*rsa.PrivateKey, error) { var priv pkcs1PrivateKey rest, err := asn1.Unmarshal(der, &priv) if len(rest) > 0 { - err = asn1.SyntaxError{Msg: "trailing data"} - return + return nil, asn1.SyntaxError{Msg: "trailing data"} } if err != nil { - return + return nil, err } if priv.Version > 1 { @@ -57,7 +61,7 @@ func ParsePKCS1PrivateKey(der []byte) (key *rsa.PrivateKey, err error) { return nil, errors.New("x509: private key contains zero or negative value") } - key = new(rsa.PrivateKey) + key := new(rsa.PrivateKey) key.PublicKey = rsa.PublicKey{ E: priv.E, N: priv.N, @@ -82,7 +86,7 @@ func ParsePKCS1PrivateKey(der []byte) (key *rsa.PrivateKey, err error) { } key.Precompute() - return + return key, nil } // MarshalPKCS1PrivateKey converts a private key to ASN.1 DER encoded form. @@ -117,8 +121,35 @@ func MarshalPKCS1PrivateKey(key *rsa.PrivateKey) []byte { return b } -// rsaPublicKey reflects the ASN.1 structure of a PKCS#1 public key. -type rsaPublicKey struct { - N *big.Int - E int +// ParsePKCS1PublicKey parses a PKCS#1 public key in ASN.1 DER form. +func ParsePKCS1PublicKey(der []byte) (*rsa.PublicKey, error) { + var pub pkcs1PublicKey + rest, err := asn1.Unmarshal(der, &pub) + if err != nil { + return nil, err + } + if len(rest) > 0 { + return nil, asn1.SyntaxError{Msg: "trailing data"} + } + + if pub.N.Sign() <= 0 || pub.E <= 0 { + return nil, errors.New("x509: public key contains zero or negative value") + } + if pub.E > 1<<31-1 { + return nil, errors.New("x509: public key contains large public exponent") + } + + return &rsa.PublicKey{ + E: pub.E, + N: pub.N, + }, nil +} + +// MarshalPKCS1PublicKey converts an RSA public key to PKCS#1, ASN.1 DER form. +func MarshalPKCS1PublicKey(key *rsa.PublicKey) []byte { + derBytes, _ := asn1.Marshal(pkcs1PublicKey{ + N: key.N, + E: key.E, + }) + return derBytes } diff --git a/vendor/github.com/google/certificate-transparency-go/x509/pkcs8.go b/vendor/github.com/google/certificate-transparency-go/x509/pkcs8.go new file mode 100644 index 00000000000..b22338ccdf6 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/pkcs8.go @@ -0,0 +1,102 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package x509 + +import ( + "crypto/ecdsa" + "crypto/rsa" + "errors" + "fmt" + + "github.com/google/certificate-transparency-go/asn1" + "github.com/google/certificate-transparency-go/x509/pkix" +) + +// pkcs8 reflects an ASN.1, PKCS#8 PrivateKey. See +// ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-8/pkcs-8v1_2.asn +// and RFC 5208. +type pkcs8 struct { + Version int + Algo pkix.AlgorithmIdentifier + PrivateKey []byte + // optional attributes omitted. +} + +// ParsePKCS8PrivateKey parses an unencrypted, PKCS#8 private key. +// See RFC 5208. +func ParsePKCS8PrivateKey(der []byte) (key interface{}, err error) { + var privKey pkcs8 + if _, err := asn1.Unmarshal(der, &privKey); err != nil { + return nil, err + } + switch { + case privKey.Algo.Algorithm.Equal(OIDPublicKeyRSA): + key, err = ParsePKCS1PrivateKey(privKey.PrivateKey) + if err != nil { + return nil, errors.New("x509: failed to parse RSA private key embedded in PKCS#8: " + err.Error()) + } + return key, nil + + case privKey.Algo.Algorithm.Equal(OIDPublicKeyECDSA): + bytes := privKey.Algo.Parameters.FullBytes + namedCurveOID := new(asn1.ObjectIdentifier) + if _, err := asn1.Unmarshal(bytes, namedCurveOID); err != nil { + namedCurveOID = nil + } + key, err = parseECPrivateKey(namedCurveOID, privKey.PrivateKey) + if err != nil { + return nil, errors.New("x509: failed to parse EC private key embedded in PKCS#8: " + err.Error()) + } + return key, nil + + default: + return nil, fmt.Errorf("x509: PKCS#8 wrapping contained private key with unknown algorithm: %v", privKey.Algo.Algorithm) + } +} + +// MarshalPKCS8PrivateKey converts a private key to PKCS#8 encoded form. +// The following key types are supported: *rsa.PrivateKey, *ecdsa.PublicKey. +// Unsupported key types result in an error. +// +// See RFC 5208. +func MarshalPKCS8PrivateKey(key interface{}) ([]byte, error) { + var privKey pkcs8 + + switch k := key.(type) { + case *rsa.PrivateKey: + privKey.Algo = pkix.AlgorithmIdentifier{ + Algorithm: OIDPublicKeyRSA, + Parameters: asn1.NullRawValue, + } + privKey.PrivateKey = MarshalPKCS1PrivateKey(k) + + case *ecdsa.PrivateKey: + oid, ok := OIDFromNamedCurve(k.Curve) + if !ok { + return nil, errors.New("x509: unknown curve while marshalling to PKCS#8") + } + + oidBytes, err := asn1.Marshal(oid) + if err != nil { + return nil, errors.New("x509: failed to marshal curve OID: " + err.Error()) + } + + privKey.Algo = pkix.AlgorithmIdentifier{ + Algorithm: OIDPublicKeyECDSA, + Parameters: asn1.RawValue{ + FullBytes: oidBytes, + }, + } + + if privKey.PrivateKey, err = marshalECPrivateKeyWithOID(k, nil); err != nil { + return nil, errors.New("x509: failed to marshal EC private key while building PKCS#8: " + err.Error()) + } + + default: + return nil, fmt.Errorf("x509: unknown key type while marshalling PKCS#8: %T", key) + } + + return asn1.Marshal(privKey) +} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/pkix/BUILD b/vendor/github.com/google/certificate-transparency-go/x509/pkix/BUILD similarity index 84% rename from vendor/github.com/google/certificate-transparency/go/x509/pkix/BUILD rename to vendor/github.com/google/certificate-transparency-go/x509/pkix/BUILD index fbca1e6f062..63694eef2f3 100644 --- a/vendor/github.com/google/certificate-transparency/go/x509/pkix/BUILD +++ b/vendor/github.com/google/certificate-transparency-go/x509/pkix/BUILD @@ -3,9 +3,9 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library") go_library( name = "go_default_library", srcs = ["pkix.go"], - importpath = "github.com/google/certificate-transparency/go/x509/pkix", + importpath = "github.com/google/certificate-transparency-go/x509/pkix", visibility = ["//visibility:public"], - deps = ["//vendor/github.com/google/certificate-transparency/go/asn1:go_default_library"], + deps = ["//vendor/github.com/google/certificate-transparency-go/asn1:go_default_library"], ) filegroup( diff --git a/vendor/github.com/google/certificate-transparency-go/x509/pkix/pkix.go b/vendor/github.com/google/certificate-transparency-go/x509/pkix/pkix.go new file mode 100644 index 00000000000..ccba8761f27 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/pkix/pkix.go @@ -0,0 +1,288 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package pkix contains shared, low level structures used for ASN.1 parsing +// and serialization of X.509 certificates, CRL and OCSP. +package pkix + +import ( + // START CT CHANGES + "encoding/hex" + "fmt" + + "github.com/google/certificate-transparency-go/asn1" + // END CT CHANGES + "math/big" + "time" +) + +// AlgorithmIdentifier represents the ASN.1 structure of the same name. See RFC +// 5280, section 4.1.1.2. +type AlgorithmIdentifier struct { + Algorithm asn1.ObjectIdentifier + Parameters asn1.RawValue `asn1:"optional"` +} + +type RDNSequence []RelativeDistinguishedNameSET + +var attributeTypeNames = map[string]string{ + "2.5.4.6": "C", + "2.5.4.10": "O", + "2.5.4.11": "OU", + "2.5.4.3": "CN", + "2.5.4.5": "SERIALNUMBER", + "2.5.4.7": "L", + "2.5.4.8": "ST", + "2.5.4.9": "STREET", + "2.5.4.17": "POSTALCODE", +} + +// String returns a string representation of the sequence r, +// roughly following the RFC 2253 Distinguished Names syntax. +func (r RDNSequence) String() string { + s := "" + for i := 0; i < len(r); i++ { + rdn := r[len(r)-1-i] + if i > 0 { + s += "," + } + for j, tv := range rdn { + if j > 0 { + s += "+" + } + + oidString := tv.Type.String() + typeName, ok := attributeTypeNames[oidString] + if !ok { + derBytes, err := asn1.Marshal(tv.Value) + if err == nil { + s += oidString + "=#" + hex.EncodeToString(derBytes) + continue // No value escaping necessary. + } + + typeName = oidString + } + + valueString := fmt.Sprint(tv.Value) + escaped := make([]rune, 0, len(valueString)) + + for k, c := range valueString { + escape := false + + switch c { + case ',', '+', '"', '\\', '<', '>', ';': + escape = true + + case ' ': + escape = k == 0 || k == len(valueString)-1 + + case '#': + escape = k == 0 + } + + if escape { + escaped = append(escaped, '\\', c) + } else { + escaped = append(escaped, c) + } + } + + s += typeName + "=" + string(escaped) + } + } + + return s +} + +type RelativeDistinguishedNameSET []AttributeTypeAndValue + +// AttributeTypeAndValue mirrors the ASN.1 structure of the same name in +// http://tools.ietf.org/html/rfc5280#section-4.1.2.4 +type AttributeTypeAndValue struct { + Type asn1.ObjectIdentifier + Value interface{} +} + +// AttributeTypeAndValueSET represents a set of ASN.1 sequences of +// AttributeTypeAndValue sequences from RFC 2986 (PKCS #10). +type AttributeTypeAndValueSET struct { + Type asn1.ObjectIdentifier + Value [][]AttributeTypeAndValue `asn1:"set"` +} + +// Extension represents the ASN.1 structure of the same name. See RFC +// 5280, section 4.2. +type Extension struct { + Id asn1.ObjectIdentifier + Critical bool `asn1:"optional"` + Value []byte +} + +// Name represents an X.509 distinguished name. This only includes the common +// elements of a DN. When parsing, all elements are stored in Names and +// non-standard elements can be extracted from there. When marshaling, elements +// in ExtraNames are appended and override other values with the same OID. +type Name struct { + Country, Organization, OrganizationalUnit []string + Locality, Province []string + StreetAddress, PostalCode []string + SerialNumber, CommonName string + + Names []AttributeTypeAndValue + ExtraNames []AttributeTypeAndValue +} + +func (n *Name) FillFromRDNSequence(rdns *RDNSequence) { + for _, rdn := range *rdns { + if len(rdn) == 0 { + continue + } + + for _, atv := range rdn { + n.Names = append(n.Names, atv) + value, ok := atv.Value.(string) + if !ok { + continue + } + + t := atv.Type + if len(t) == 4 && t[0] == OIDAttribute[0] && t[1] == OIDAttribute[1] && t[2] == OIDAttribute[2] { + switch t[3] { + case OIDCommonName[3]: + n.CommonName = value + case OIDSerialNumber[3]: + n.SerialNumber = value + case OIDCountry[3]: + n.Country = append(n.Country, value) + case OIDLocality[3]: + n.Locality = append(n.Locality, value) + case OIDProvince[3]: + n.Province = append(n.Province, value) + case OIDStreetAddress[3]: + n.StreetAddress = append(n.StreetAddress, value) + case OIDOrganization[3]: + n.Organization = append(n.Organization, value) + case OIDOrganizationalUnit[3]: + n.OrganizationalUnit = append(n.OrganizationalUnit, value) + case OIDPostalCode[3]: + n.PostalCode = append(n.PostalCode, value) + } + } + } + } +} + +var ( + OIDAttribute = asn1.ObjectIdentifier{2, 5, 4} + OIDCountry = asn1.ObjectIdentifier{2, 5, 4, 6} + OIDOrganization = asn1.ObjectIdentifier{2, 5, 4, 10} + OIDOrganizationalUnit = asn1.ObjectIdentifier{2, 5, 4, 11} + OIDCommonName = asn1.ObjectIdentifier{2, 5, 4, 3} + OIDSerialNumber = asn1.ObjectIdentifier{2, 5, 4, 5} + OIDLocality = asn1.ObjectIdentifier{2, 5, 4, 7} + OIDProvince = asn1.ObjectIdentifier{2, 5, 4, 8} + OIDStreetAddress = asn1.ObjectIdentifier{2, 5, 4, 9} + OIDPostalCode = asn1.ObjectIdentifier{2, 5, 4, 17} + + OIDPseudonym = asn1.ObjectIdentifier{2, 5, 4, 65} + OIDTitle = asn1.ObjectIdentifier{2, 5, 4, 12} + OIDDnQualifier = asn1.ObjectIdentifier{2, 5, 4, 46} + OIDName = asn1.ObjectIdentifier{2, 5, 4, 41} + OIDSurname = asn1.ObjectIdentifier{2, 5, 4, 4} + OIDGivenName = asn1.ObjectIdentifier{2, 5, 4, 42} + OIDInitials = asn1.ObjectIdentifier{2, 5, 4, 43} + OIDGenerationQualifier = asn1.ObjectIdentifier{2, 5, 4, 44} +) + +// appendRDNs appends a relativeDistinguishedNameSET to the given RDNSequence +// and returns the new value. The relativeDistinguishedNameSET contains an +// attributeTypeAndValue for each of the given values. See RFC 5280, A.1, and +// search for AttributeTypeAndValue. +func (n Name) appendRDNs(in RDNSequence, values []string, oid asn1.ObjectIdentifier) RDNSequence { + if len(values) == 0 || oidInAttributeTypeAndValue(oid, n.ExtraNames) { + return in + } + + s := make([]AttributeTypeAndValue, len(values)) + for i, value := range values { + s[i].Type = oid + s[i].Value = value + } + + return append(in, s) +} + +func (n Name) ToRDNSequence() (ret RDNSequence) { + ret = n.appendRDNs(ret, n.Country, OIDCountry) + ret = n.appendRDNs(ret, n.Province, OIDProvince) + ret = n.appendRDNs(ret, n.Locality, OIDLocality) + ret = n.appendRDNs(ret, n.StreetAddress, OIDStreetAddress) + ret = n.appendRDNs(ret, n.PostalCode, OIDPostalCode) + ret = n.appendRDNs(ret, n.Organization, OIDOrganization) + ret = n.appendRDNs(ret, n.OrganizationalUnit, OIDOrganizationalUnit) + if len(n.CommonName) > 0 { + ret = n.appendRDNs(ret, []string{n.CommonName}, OIDCommonName) + } + if len(n.SerialNumber) > 0 { + ret = n.appendRDNs(ret, []string{n.SerialNumber}, OIDSerialNumber) + } + for _, atv := range n.ExtraNames { + ret = append(ret, []AttributeTypeAndValue{atv}) + } + + return ret +} + +// String returns the string form of n, roughly following +// the RFC 2253 Distinguished Names syntax. +func (n Name) String() string { + return n.ToRDNSequence().String() +} + +// oidInAttributeTypeAndValue returns whether a type with the given OID exists +// in atv. +func oidInAttributeTypeAndValue(oid asn1.ObjectIdentifier, atv []AttributeTypeAndValue) bool { + for _, a := range atv { + if a.Type.Equal(oid) { + return true + } + } + return false +} + +// CertificateList represents the ASN.1 structure of the same name. See RFC +// 5280, section 5.1. Use Certificate.CheckCRLSignature to verify the +// signature. +type CertificateList struct { + TBSCertList TBSCertificateList + SignatureAlgorithm AlgorithmIdentifier + SignatureValue asn1.BitString +} + +// HasExpired reports whether certList should have been updated by now. +func (certList *CertificateList) HasExpired(now time.Time) bool { + return !now.Before(certList.TBSCertList.NextUpdate) +} + +// TBSCertificateList represents the ASN.1 structure TBSCertList. See RFC +// 5280, section 5.1. +type TBSCertificateList struct { + Raw asn1.RawContent + Version int `asn1:"optional,default:0"` + Signature AlgorithmIdentifier + Issuer RDNSequence + ThisUpdate time.Time + NextUpdate time.Time `asn1:"optional"` + RevokedCertificates []RevokedCertificate `asn1:"optional"` + Extensions []Extension `asn1:"tag:0,optional,explicit"` +} + +// RevokedCertificate represents the unnamed ASN.1 structure that makes up the +// revokedCertificates member of the TBSCertList structure. See RFC +// 5280, section 5.1. +type RevokedCertificate struct { + SerialNumber *big.Int + RevocationTime time.Time + Extensions []Extension `asn1:"optional"` +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/revoked.go b/vendor/github.com/google/certificate-transparency-go/x509/revoked.go new file mode 100644 index 00000000000..e7044416398 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/revoked.go @@ -0,0 +1,362 @@ +// Copyright 2017 Google Inc. All Rights Reserved. +// +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package x509 + +import ( + "bytes" + "encoding/pem" + "time" + + "github.com/google/certificate-transparency-go/asn1" + "github.com/google/certificate-transparency-go/x509/pkix" +) + +var ( + // OID values for CRL extensions (TBSCertList.Extensions), RFC 5280 s5.2. + OIDExtensionCRLNumber = asn1.ObjectIdentifier{2, 5, 29, 20} + OIDExtensionDeltaCRLIndicator = asn1.ObjectIdentifier{2, 5, 29, 27} + OIDExtensionIssuingDistributionPoint = asn1.ObjectIdentifier{2, 5, 29, 28} + // OID values for CRL entry extensions (RevokedCertificate.Extensions), RFC 5280 s5.3 + OIDExtensionCRLReasons = asn1.ObjectIdentifier{2, 5, 29, 21} + OIDExtensionInvalidityDate = asn1.ObjectIdentifier{2, 5, 29, 24} + OIDExtensionCertificateIssuer = asn1.ObjectIdentifier{2, 5, 29, 29} +) + +// RevocationReasonCode represents the reason for a certificate revocation; see RFC 5280 s5.3.1. +type RevocationReasonCode asn1.Enumerated + +// RevocationReasonCode values. +var ( + Unspecified = RevocationReasonCode(0) + KeyCompromise = RevocationReasonCode(1) + CACompromise = RevocationReasonCode(2) + AffiliationChanged = RevocationReasonCode(3) + Superseded = RevocationReasonCode(4) + CessationOfOperation = RevocationReasonCode(5) + CertificateHold = RevocationReasonCode(6) + RemoveFromCRL = RevocationReasonCode(8) + PrivilegeWithdrawn = RevocationReasonCode(9) + AACompromise = RevocationReasonCode(10) +) + +// ReasonFlag holds a bitmask of applicable revocation reasons, from RFC 5280 s4.2.1.13 +type ReasonFlag int + +// ReasonFlag values. +const ( + UnusedFlag ReasonFlag = 1 << iota + KeyCompromiseFlag + CACompromiseFlag + AffiliationChangedFlag + SupersededFlag + CessationOfOperationFlag + CertificateHoldFlag + PrivilegeWithdrawnFlag + AACompromiseFlag +) + +// CertificateList represents the ASN.1 structure of the same name from RFC 5280, s5.1. +// It has the same content as pkix.CertificateList, but the contents include parsed versions +// of any extensions. +type CertificateList struct { + Raw asn1.RawContent + TBSCertList TBSCertList + SignatureAlgorithm pkix.AlgorithmIdentifier + SignatureValue asn1.BitString +} + +// ExpiredAt reports whether now is past the expiry time of certList. +func (certList *CertificateList) ExpiredAt(now time.Time) bool { + return now.After(certList.TBSCertList.NextUpdate) +} + +// Indication of whether extensions need to be critical or non-critical. Extensions that +// can be either are omitted from the map. +var listExtCritical = map[string]bool{ + // From RFC 5280... + OIDExtensionAuthorityKeyId.String(): false, // s5.2.1 + OIDExtensionIssuerAltName.String(): false, // s5.2.2 + OIDExtensionCRLNumber.String(): false, // s5.2.3 + OIDExtensionDeltaCRLIndicator.String(): true, // s5.2.4 + OIDExtensionIssuingDistributionPoint.String(): true, // s5.2.5 + OIDExtensionFreshestCRL.String(): false, // s5.2.6 + OIDExtensionAuthorityInfoAccess.String(): false, // s5.2.7 +} + +var certExtCritical = map[string]bool{ + // From RFC 5280... + OIDExtensionCRLReasons.String(): false, // s5.3.1 + OIDExtensionInvalidityDate.String(): false, // s5.3.2 + OIDExtensionCertificateIssuer.String(): true, // s5.3.3 +} + +// IssuingDistributionPoint represents the ASN.1 structure of the same +// name +type IssuingDistributionPoint struct { + DistributionPoint distributionPointName `asn1:"optional,tag:0"` + OnlyContainsUserCerts bool `asn1:"optional,tag:1"` + OnlyContainsCACerts bool `asn1:"optional,tag:2"` + OnlySomeReasons asn1.BitString `asn1:"optional,tag:3"` + IndirectCRL bool `asn1:"optional,tag:4"` + OnlyContainsAttributeCerts bool `asn1:"optional,tag:5"` +} + +// TBSCertList represents the ASN.1 structure of the same name from RFC +// 5280, section 5.1. It has the same content as pkix.TBSCertificateList +// but the extensions are included in a parsed format. +type TBSCertList struct { + Raw asn1.RawContent + Version int + Signature pkix.AlgorithmIdentifier + Issuer pkix.RDNSequence + ThisUpdate time.Time + NextUpdate time.Time + RevokedCertificates []*RevokedCertificate + Extensions []pkix.Extension + // Cracked out extensions: + AuthorityKeyID []byte + IssuerAltNames GeneralNames + CRLNumber int + BaseCRLNumber int // -1 if no delta CRL present + IssuingDistributionPoint IssuingDistributionPoint + IssuingDPFullNames GeneralNames + FreshestCRLDistributionPoint []string + OCSPServer []string + IssuingCertificateURL []string +} + +// ParseCertificateList parses a CertificateList (e.g. a CRL) from the given +// bytes. It's often the case that PEM encoded CRLs will appear where they +// should be DER encoded, so this function will transparently handle PEM +// encoding as long as there isn't any leading garbage. +func ParseCertificateList(clBytes []byte) (*CertificateList, error) { + if bytes.HasPrefix(clBytes, pemCRLPrefix) { + block, _ := pem.Decode(clBytes) + if block != nil && block.Type == pemType { + clBytes = block.Bytes + } + } + return ParseCertificateListDER(clBytes) +} + +// ParseCertificateListDER parses a DER encoded CertificateList from the given bytes. +// For non-fatal errors, this function returns both an error and a CertificateList +// object. +func ParseCertificateListDER(derBytes []byte) (*CertificateList, error) { + var errs Errors + // First parse the DER into the pkix structures. + pkixList := new(pkix.CertificateList) + if rest, err := asn1.Unmarshal(derBytes, pkixList); err != nil { + errs.AddID(ErrInvalidCertList, err) + return nil, &errs + } else if len(rest) != 0 { + errs.AddID(ErrTrailingCertList) + return nil, &errs + } + + // Transcribe the revoked certs but crack out extensions. + revokedCerts := make([]*RevokedCertificate, len(pkixList.TBSCertList.RevokedCertificates)) + for i, pkixRevoked := range pkixList.TBSCertList.RevokedCertificates { + revokedCerts[i] = parseRevokedCertificate(pkixRevoked, &errs) + if revokedCerts[i] == nil { + return nil, &errs + } + } + + certList := CertificateList{ + Raw: derBytes, + TBSCertList: TBSCertList{ + Raw: pkixList.TBSCertList.Raw, + Version: pkixList.TBSCertList.Version, + Signature: pkixList.TBSCertList.Signature, + Issuer: pkixList.TBSCertList.Issuer, + ThisUpdate: pkixList.TBSCertList.ThisUpdate, + NextUpdate: pkixList.TBSCertList.NextUpdate, + RevokedCertificates: revokedCerts, + Extensions: pkixList.TBSCertList.Extensions, + CRLNumber: -1, + BaseCRLNumber: -1, + }, + SignatureAlgorithm: pkixList.SignatureAlgorithm, + SignatureValue: pkixList.SignatureValue, + } + + // Now crack out extensions. + for _, e := range certList.TBSCertList.Extensions { + if expectCritical, present := listExtCritical[e.Id.String()]; present { + if e.Critical && !expectCritical { + errs.AddID(ErrUnexpectedlyCriticalCertListExtension, e.Id) + } else if !e.Critical && expectCritical { + errs.AddID(ErrUnexpectedlyNonCriticalCertListExtension, e.Id) + } + } + switch { + case e.Id.Equal(OIDExtensionAuthorityKeyId): + // RFC 5280 s5.2.1 + var a authKeyId + if rest, err := asn1.Unmarshal(e.Value, &a); err != nil { + errs.AddID(ErrInvalidCertListAuthKeyID, err) + } else if len(rest) != 0 { + errs.AddID(ErrTrailingCertListAuthKeyID) + } + certList.TBSCertList.AuthorityKeyID = a.Id + case e.Id.Equal(OIDExtensionIssuerAltName): + // RFC 5280 s5.2.2 + if err := parseGeneralNames(e.Value, &certList.TBSCertList.IssuerAltNames); err != nil { + errs.AddID(ErrInvalidCertListIssuerAltName, err) + } + case e.Id.Equal(OIDExtensionCRLNumber): + // RFC 5280 s5.2.3 + if rest, err := asn1.Unmarshal(e.Value, &certList.TBSCertList.CRLNumber); err != nil { + errs.AddID(ErrInvalidCertListCRLNumber, err) + } else if len(rest) != 0 { + errs.AddID(ErrTrailingCertListCRLNumber) + } + if certList.TBSCertList.CRLNumber < 0 { + errs.AddID(ErrNegativeCertListCRLNumber, certList.TBSCertList.CRLNumber) + } + case e.Id.Equal(OIDExtensionDeltaCRLIndicator): + // RFC 5280 s5.2.4 + if rest, err := asn1.Unmarshal(e.Value, &certList.TBSCertList.BaseCRLNumber); err != nil { + errs.AddID(ErrInvalidCertListDeltaCRL, err) + } else if len(rest) != 0 { + errs.AddID(ErrTrailingCertListDeltaCRL) + } + if certList.TBSCertList.BaseCRLNumber < 0 { + errs.AddID(ErrNegativeCertListDeltaCRL, certList.TBSCertList.BaseCRLNumber) + } + case e.Id.Equal(OIDExtensionIssuingDistributionPoint): + parseIssuingDistributionPoint(e.Value, &certList.TBSCertList.IssuingDistributionPoint, &certList.TBSCertList.IssuingDPFullNames, &errs) + case e.Id.Equal(OIDExtensionFreshestCRL): + // RFC 5280 s5.2.6 + if err := parseDistributionPoints(e.Value, &certList.TBSCertList.FreshestCRLDistributionPoint); err != nil { + errs.AddID(ErrInvalidCertListFreshestCRL, err) + return nil, err + } + case e.Id.Equal(OIDExtensionAuthorityInfoAccess): + // RFC 5280 s5.2.7 + var aia []authorityInfoAccess + if rest, err := asn1.Unmarshal(e.Value, &aia); err != nil { + errs.AddID(ErrInvalidCertListAuthInfoAccess, err) + } else if len(rest) != 0 { + errs.AddID(ErrTrailingCertListAuthInfoAccess) + } + + for _, v := range aia { + // GeneralName: uniformResourceIdentifier [6] IA5String + if v.Location.Tag != tagURI { + continue + } + switch { + case v.Method.Equal(OIDAuthorityInfoAccessOCSP): + certList.TBSCertList.OCSPServer = append(certList.TBSCertList.OCSPServer, string(v.Location.Bytes)) + case v.Method.Equal(OIDAuthorityInfoAccessIssuers): + certList.TBSCertList.IssuingCertificateURL = append(certList.TBSCertList.IssuingCertificateURL, string(v.Location.Bytes)) + } + // TODO(drysdale): cope with more possibilities + } + default: + if e.Critical { + errs.AddID(ErrUnhandledCriticalCertListExtension, e.Id) + } + } + } + + if errs.Fatal() { + return nil, &errs + } + if errs.Empty() { + return &certList, nil + } + return &certList, &errs +} + +func parseIssuingDistributionPoint(data []byte, idp *IssuingDistributionPoint, name *GeneralNames, errs *Errors) { + // RFC 5280 s5.2.5 + if rest, err := asn1.Unmarshal(data, idp); err != nil { + errs.AddID(ErrInvalidCertListIssuingDP, err) + } else if len(rest) != 0 { + errs.AddID(ErrTrailingCertListIssuingDP) + } + + typeCount := 0 + if idp.OnlyContainsUserCerts { + typeCount++ + } + if idp.OnlyContainsCACerts { + typeCount++ + } + if idp.OnlyContainsAttributeCerts { + typeCount++ + } + if typeCount > 1 { + errs.AddID(ErrCertListIssuingDPMultipleTypes, idp.OnlyContainsUserCerts, idp.OnlyContainsCACerts, idp.OnlyContainsAttributeCerts) + } + for _, fn := range idp.DistributionPoint.FullName { + if _, err := parseGeneralName(fn.FullBytes, name, false); err != nil { + errs.AddID(ErrCertListIssuingDPInvalidFullName, err) + } + } +} + +// RevokedCertificate represents the unnamed ASN.1 structure that makes up the +// revokedCertificates member of the TBSCertList structure from RFC 5280, s5.1. +// It has the same content as pkix.RevokedCertificate but the extensions are +// included in a parsed format. +type RevokedCertificate struct { + pkix.RevokedCertificate + // Cracked out extensions: + RevocationReason RevocationReasonCode + InvalidityDate time.Time + Issuer GeneralNames +} + +func parseRevokedCertificate(pkixRevoked pkix.RevokedCertificate, errs *Errors) *RevokedCertificate { + result := RevokedCertificate{RevokedCertificate: pkixRevoked} + for _, e := range pkixRevoked.Extensions { + if expectCritical, present := certExtCritical[e.Id.String()]; present { + if e.Critical && !expectCritical { + errs.AddID(ErrUnexpectedlyCriticalRevokedCertExtension, e.Id) + } else if !e.Critical && expectCritical { + errs.AddID(ErrUnexpectedlyNonCriticalRevokedCertExtension, e.Id) + } + } + switch { + case e.Id.Equal(OIDExtensionCRLReasons): + // RFC 5280, s5.3.1 + var reason asn1.Enumerated + if rest, err := asn1.Unmarshal(e.Value, &reason); err != nil { + errs.AddID(ErrInvalidRevocationReason, err) + } else if len(rest) != 0 { + errs.AddID(ErrTrailingRevocationReason) + } + result.RevocationReason = RevocationReasonCode(reason) + case e.Id.Equal(OIDExtensionInvalidityDate): + // RFC 5280, s5.3.2 + if rest, err := asn1.Unmarshal(e.Value, &result.InvalidityDate); err != nil { + errs.AddID(ErrInvalidRevocationInvalidityDate, err) + } else if len(rest) != 0 { + errs.AddID(ErrTrailingRevocationInvalidityDate) + } + case e.Id.Equal(OIDExtensionCertificateIssuer): + // RFC 5280, s5.3.3 + if err := parseGeneralNames(e.Value, &result.Issuer); err != nil { + errs.AddID(ErrInvalidRevocationIssuer, err) + } + default: + if e.Critical { + errs.AddID(ErrUnhandledCriticalRevokedCertExtension, e.Id) + } + } + } + return &result +} + +// CheckCertificateListSignature checks that the signature in crl is from c. +func (c *Certificate) CheckCertificateListSignature(crl *CertificateList) error { + algo := SignatureAlgorithmFromAI(crl.SignatureAlgorithm) + return c.CheckSignature(algo, crl.TBSCertList.Raw, crl.SignatureValue.RightAlign()) +} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/root.go b/vendor/github.com/google/certificate-transparency-go/x509/root.go old mode 100755 new mode 100644 similarity index 65% rename from vendor/github.com/google/certificate-transparency/go/x509/root.go rename to vendor/github.com/google/certificate-transparency-go/x509/root.go index 8aae14e09ee..787d955be47 --- a/vendor/github.com/google/certificate-transparency/go/x509/root.go +++ b/vendor/github.com/google/certificate-transparency-go/x509/root.go @@ -7,11 +7,16 @@ package x509 import "sync" var ( - once sync.Once - systemRoots *CertPool + once sync.Once + systemRoots *CertPool + systemRootsErr error ) func systemRootsPool() *CertPool { once.Do(initSystemRoots) return systemRoots } + +func initSystemRoots() { + systemRoots, systemRootsErr = loadSystemRoots() +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/root_bsd.go b/vendor/github.com/google/certificate-transparency-go/x509/root_bsd.go new file mode 100644 index 00000000000..13719338910 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_bsd.go @@ -0,0 +1,15 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build dragonfly freebsd netbsd openbsd + +package x509 + +// Possible certificate files; stop after finding one. +var certFiles = []string{ + "/usr/local/etc/ssl/cert.pem", // FreeBSD + "/etc/ssl/cert.pem", // OpenBSD + "/usr/local/share/certs/ca-root-nss.crt", // DragonFly + "/etc/openssl/certs/ca-certificates.crt", // NetBSD +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/root_cgo_darwin.go b/vendor/github.com/google/certificate-transparency-go/x509/root_cgo_darwin.go new file mode 100644 index 00000000000..6c2f21d903c --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_cgo_darwin.go @@ -0,0 +1,252 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build cgo,!arm,!arm64,!ios + +package x509 + +/* +#cgo CFLAGS: -mmacosx-version-min=10.6 -D__MAC_OS_X_VERSION_MAX_ALLOWED=1080 +#cgo LDFLAGS: -framework CoreFoundation -framework Security + +#include +#include + +#include +#include + +// FetchPEMRootsCTX509_MountainLion is the version of FetchPEMRoots from Go 1.6 +// which still works on OS X 10.8 (Mountain Lion). +// It lacks support for admin & user cert domains. +// See golang.org/issue/16473 +int FetchPEMRootsCTX509_MountainLion(CFDataRef *pemRoots) { + if (pemRoots == NULL) { + return -1; + } + CFArrayRef certs = NULL; + OSStatus err = SecTrustCopyAnchorCertificates(&certs); + if (err != noErr) { + return -1; + } + CFMutableDataRef combinedData = CFDataCreateMutable(kCFAllocatorDefault, 0); + int i, ncerts = CFArrayGetCount(certs); + for (i = 0; i < ncerts; i++) { + CFDataRef data = NULL; + SecCertificateRef cert = (SecCertificateRef)CFArrayGetValueAtIndex(certs, i); + if (cert == NULL) { + continue; + } + // Note: SecKeychainItemExport is deprecated as of 10.7 in favor of SecItemExport. + // Once we support weak imports via cgo we should prefer that, and fall back to this + // for older systems. + err = SecKeychainItemExport(cert, kSecFormatX509Cert, kSecItemPemArmour, NULL, &data); + if (err != noErr) { + continue; + } + if (data != NULL) { + CFDataAppendBytes(combinedData, CFDataGetBytePtr(data), CFDataGetLength(data)); + CFRelease(data); + } + } + CFRelease(certs); + *pemRoots = combinedData; + return 0; +} + +// useOldCodeCTX509 reports whether the running machine is OS X 10.8 Mountain Lion +// or older. We only support Mountain Lion and higher, but we'll at least try our +// best on older machines and continue to use the old code path. +// +// See golang.org/issue/16473 +int useOldCodeCTX509() { + char str[256]; + size_t size = sizeof(str); + memset(str, 0, size); + sysctlbyname("kern.osrelease", str, &size, NULL, 0); + // OS X 10.8 is osrelease "12.*", 10.7 is 11.*, 10.6 is 10.*. + // We never supported things before that. + return memcmp(str, "12.", 3) == 0 || memcmp(str, "11.", 3) == 0 || memcmp(str, "10.", 3) == 0; +} + +// FetchPEMRootsCTX509 fetches the system's list of trusted X.509 root certificates. +// +// On success it returns 0 and fills pemRoots with a CFDataRef that contains the extracted root +// certificates of the system. On failure, the function returns -1. +// Additionally, it fills untrustedPemRoots with certs that must be removed from pemRoots. +// +// Note: The CFDataRef returned in pemRoots and untrustedPemRoots must +// be released (using CFRelease) after we've consumed its content. +int FetchPEMRootsCTX509(CFDataRef *pemRoots, CFDataRef *untrustedPemRoots) { + if (useOldCodeCTX509()) { + return FetchPEMRootsCTX509_MountainLion(pemRoots); + } + + // Get certificates from all domains, not just System, this lets + // the user add CAs to their "login" keychain, and Admins to add + // to the "System" keychain + SecTrustSettingsDomain domains[] = { kSecTrustSettingsDomainSystem, + kSecTrustSettingsDomainAdmin, + kSecTrustSettingsDomainUser }; + + int numDomains = sizeof(domains)/sizeof(SecTrustSettingsDomain); + if (pemRoots == NULL) { + return -1; + } + + // kSecTrustSettingsResult is defined as CFSTR("kSecTrustSettingsResult"), + // but the Go linker's internal linking mode can't handle CFSTR relocations. + // Create our own dynamic string instead and release it below. + CFStringRef policy = CFStringCreateWithCString(NULL, "kSecTrustSettingsResult", kCFStringEncodingUTF8); + + CFMutableDataRef combinedData = CFDataCreateMutable(kCFAllocatorDefault, 0); + CFMutableDataRef combinedUntrustedData = CFDataCreateMutable(kCFAllocatorDefault, 0); + for (int i = 0; i < numDomains; i++) { + CFArrayRef certs = NULL; + OSStatus err = SecTrustSettingsCopyCertificates(domains[i], &certs); + if (err != noErr) { + continue; + } + + CFIndex numCerts = CFArrayGetCount(certs); + for (int j = 0; j < numCerts; j++) { + CFDataRef data = NULL; + CFErrorRef errRef = NULL; + CFArrayRef trustSettings = NULL; + SecCertificateRef cert = (SecCertificateRef)CFArrayGetValueAtIndex(certs, j); + if (cert == NULL) { + continue; + } + // We only want trusted certs. + int untrusted = 0; + int trustAsRoot = 0; + int trustRoot = 0; + if (i == 0) { + trustAsRoot = 1; + } else { + // Certs found in the system domain are always trusted. If the user + // configures "Never Trust" on such a cert, it will also be found in the + // admin or user domain, causing it to be added to untrustedPemRoots. The + // Go code will then clean this up. + + // Trust may be stored in any of the domains. According to Apple's + // SecTrustServer.c, "user trust settings overrule admin trust settings", + // so take the last trust settings array we find. + // Skip the system domain since it is always trusted. + for (int k = i; k < numDomains; k++) { + CFArrayRef domainTrustSettings = NULL; + err = SecTrustSettingsCopyTrustSettings(cert, domains[k], &domainTrustSettings); + if (err == errSecSuccess && domainTrustSettings != NULL) { + if (trustSettings) { + CFRelease(trustSettings); + } + trustSettings = domainTrustSettings; + } + } + if (trustSettings == NULL) { + // "this certificate must be verified to a known trusted certificate"; aka not a root. + continue; + } + for (CFIndex k = 0; k < CFArrayGetCount(trustSettings); k++) { + CFNumberRef cfNum; + CFDictionaryRef tSetting = (CFDictionaryRef)CFArrayGetValueAtIndex(trustSettings, k); + if (CFDictionaryGetValueIfPresent(tSetting, policy, (const void**)&cfNum)){ + SInt32 result = 0; + CFNumberGetValue(cfNum, kCFNumberSInt32Type, &result); + // TODO: The rest of the dictionary specifies conditions for evaluation. + if (result == kSecTrustSettingsResultDeny) { + untrusted = 1; + } else if (result == kSecTrustSettingsResultTrustAsRoot) { + trustAsRoot = 1; + } else if (result == kSecTrustSettingsResultTrustRoot) { + trustRoot = 1; + } + } + } + CFRelease(trustSettings); + } + + if (trustRoot) { + // We only want to add Root CAs, so make sure Subject and Issuer Name match + CFDataRef subjectName = SecCertificateCopyNormalizedSubjectContent(cert, &errRef); + if (errRef != NULL) { + CFRelease(errRef); + continue; + } + CFDataRef issuerName = SecCertificateCopyNormalizedIssuerContent(cert, &errRef); + if (errRef != NULL) { + CFRelease(subjectName); + CFRelease(errRef); + continue; + } + Boolean equal = CFEqual(subjectName, issuerName); + CFRelease(subjectName); + CFRelease(issuerName); + if (!equal) { + continue; + } + } + + // Note: SecKeychainItemExport is deprecated as of 10.7 in favor of SecItemExport. + // Once we support weak imports via cgo we should prefer that, and fall back to this + // for older systems. + err = SecKeychainItemExport(cert, kSecFormatX509Cert, kSecItemPemArmour, NULL, &data); + if (err != noErr) { + continue; + } + + if (data != NULL) { + if (!trustRoot && !trustAsRoot) { + untrusted = 1; + } + CFMutableDataRef appendTo = untrusted ? combinedUntrustedData : combinedData; + CFDataAppendBytes(appendTo, CFDataGetBytePtr(data), CFDataGetLength(data)); + CFRelease(data); + } + } + CFRelease(certs); + } + CFRelease(policy); + *pemRoots = combinedData; + *untrustedPemRoots = combinedUntrustedData; + return 0; +} +*/ +import "C" +import ( + "errors" + "unsafe" +) + +func loadSystemRoots() (*CertPool, error) { + roots := NewCertPool() + + var data C.CFDataRef + setNilCFRef(&data) + var untrustedData C.CFDataRef + setNilCFRef(&untrustedData) + err := C.FetchPEMRootsCTX509(&data, &untrustedData) + if err == -1 { + // TODO: better error message + return nil, errors.New("crypto/x509: failed to load darwin system roots with cgo") + } + + defer C.CFRelease(C.CFTypeRef(data)) + buf := C.GoBytes(unsafe.Pointer(C.CFDataGetBytePtr(data)), C.int(C.CFDataGetLength(data))) + roots.AppendCertsFromPEM(buf) + if isNilCFRef(untrustedData) { + return roots, nil + } + defer C.CFRelease(C.CFTypeRef(untrustedData)) + buf = C.GoBytes(unsafe.Pointer(C.CFDataGetBytePtr(untrustedData)), C.int(C.CFDataGetLength(untrustedData))) + untrustedRoots := NewCertPool() + untrustedRoots.AppendCertsFromPEM(buf) + + trustedRoots := NewCertPool() + for _, c := range roots.certs { + if !untrustedRoots.contains(c) { + trustedRoots.AddCert(c) + } + } + return trustedRoots, nil +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/root_darwin.go b/vendor/github.com/google/certificate-transparency-go/x509/root_darwin.go new file mode 100644 index 00000000000..bc35a1cf212 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_darwin.go @@ -0,0 +1,264 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:generate go run root_darwin_arm_gen.go -output root_darwin_armx.go + +package x509 + +import ( + "bufio" + "bytes" + "crypto/sha1" + "encoding/pem" + "fmt" + "io" + "io/ioutil" + "os" + "os/exec" + "os/user" + "path/filepath" + "strings" + "sync" +) + +var debugExecDarwinRoots = strings.Contains(os.Getenv("GODEBUG"), "x509roots=1") + +func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) { + return nil, nil +} + +// This code is only used when compiling without cgo. +// It is here, instead of root_nocgo_darwin.go, so that tests can check it +// even if the tests are run with cgo enabled. +// The linker will not include these unused functions in binaries built with cgo enabled. + +// execSecurityRoots finds the macOS list of trusted root certificates +// using only command-line tools. This is our fallback path when cgo isn't available. +// +// The strategy is as follows: +// +// 1. Run "security trust-settings-export" and "security +// trust-settings-export -d" to discover the set of certs with some +// user-tweaked trust policy. We're too lazy to parse the XML (at +// least at this stage of Go 1.8) to understand what the trust +// policy actually is. We just learn that there is _some_ policy. +// +// 2. Run "security find-certificate" to dump the list of system root +// CAs in PEM format. +// +// 3. For each dumped cert, conditionally verify it with "security +// verify-cert" if that cert was in the set discovered in Step 1. +// Without the Step 1 optimization, running "security verify-cert" +// 150-200 times takes 3.5 seconds. With the optimization, the +// whole process takes about 180 milliseconds with 1 untrusted root +// CA. (Compared to 110ms in the cgo path) +func execSecurityRoots() (*CertPool, error) { + hasPolicy, err := getCertsWithTrustPolicy() + if err != nil { + return nil, err + } + if debugExecDarwinRoots { + println(fmt.Sprintf("crypto/x509: %d certs have a trust policy", len(hasPolicy))) + } + + args := []string{"find-certificate", "-a", "-p", + "/System/Library/Keychains/SystemRootCertificates.keychain", + "/Library/Keychains/System.keychain", + } + + u, err := user.Current() + if err != nil { + if debugExecDarwinRoots { + println(fmt.Sprintf("crypto/x509: get current user: %v", err)) + } + } else { + args = append(args, + filepath.Join(u.HomeDir, "/Library/Keychains/login.keychain"), + + // Fresh installs of Sierra use a slightly different path for the login keychain + filepath.Join(u.HomeDir, "/Library/Keychains/login.keychain-db"), + ) + } + + cmd := exec.Command("/usr/bin/security", args...) + data, err := cmd.Output() + if err != nil { + return nil, err + } + + var ( + mu sync.Mutex + roots = NewCertPool() + numVerified int // number of execs of 'security verify-cert', for debug stats + ) + + blockCh := make(chan *pem.Block) + var wg sync.WaitGroup + + // Using 4 goroutines to pipe into verify-cert seems to be + // about the best we can do. The verify-cert binary seems to + // just RPC to another server with coarse locking anyway, so + // running 16 at a time for instance doesn't help at all. Due + // to the "if hasPolicy" check below, though, we will rarely + // (or never) call verify-cert on stock macOS systems, though. + // The hope is that we only call verify-cert when the user has + // tweaked their trust policy. These 4 goroutines are only + // defensive in the pathological case of many trust edits. + for i := 0; i < 4; i++ { + wg.Add(1) + go func() { + defer wg.Done() + for block := range blockCh { + cert, err := ParseCertificate(block.Bytes) + if err != nil { + continue + } + sha1CapHex := fmt.Sprintf("%X", sha1.Sum(block.Bytes)) + + valid := true + verifyChecks := 0 + if hasPolicy[sha1CapHex] { + verifyChecks++ + if !verifyCertWithSystem(block, cert) { + valid = false + } + } + + mu.Lock() + numVerified += verifyChecks + if valid { + roots.AddCert(cert) + } + mu.Unlock() + } + }() + } + for len(data) > 0 { + var block *pem.Block + block, data = pem.Decode(data) + if block == nil { + break + } + if block.Type != "CERTIFICATE" || len(block.Headers) != 0 { + continue + } + blockCh <- block + } + close(blockCh) + wg.Wait() + + if debugExecDarwinRoots { + mu.Lock() + defer mu.Unlock() + println(fmt.Sprintf("crypto/x509: ran security verify-cert %d times", numVerified)) + } + + return roots, nil +} + +func verifyCertWithSystem(block *pem.Block, cert *Certificate) bool { + data := pem.EncodeToMemory(block) + + f, err := ioutil.TempFile("", "cert") + if err != nil { + fmt.Fprintf(os.Stderr, "can't create temporary file for cert: %v", err) + return false + } + defer os.Remove(f.Name()) + if _, err := f.Write(data); err != nil { + fmt.Fprintf(os.Stderr, "can't write temporary file for cert: %v", err) + return false + } + if err := f.Close(); err != nil { + fmt.Fprintf(os.Stderr, "can't write temporary file for cert: %v", err) + return false + } + cmd := exec.Command("/usr/bin/security", "verify-cert", "-c", f.Name(), "-l", "-L") + var stderr bytes.Buffer + if debugExecDarwinRoots { + cmd.Stderr = &stderr + } + if err := cmd.Run(); err != nil { + if debugExecDarwinRoots { + println(fmt.Sprintf("crypto/x509: verify-cert rejected %s: %q", cert.Subject.CommonName, bytes.TrimSpace(stderr.Bytes()))) + } + return false + } + if debugExecDarwinRoots { + println(fmt.Sprintf("crypto/x509: verify-cert approved %s", cert.Subject.CommonName)) + } + return true +} + +// getCertsWithTrustPolicy returns the set of certs that have a +// possibly-altered trust policy. The keys of the map are capitalized +// sha1 hex of the raw cert. +// They are the certs that should be checked against `security +// verify-cert` to see whether the user altered the default trust +// settings. This code is only used for cgo-disabled builds. +func getCertsWithTrustPolicy() (map[string]bool, error) { + set := map[string]bool{} + td, err := ioutil.TempDir("", "x509trustpolicy") + if err != nil { + return nil, err + } + defer os.RemoveAll(td) + run := func(file string, args ...string) error { + file = filepath.Join(td, file) + args = append(args, file) + cmd := exec.Command("/usr/bin/security", args...) + var stderr bytes.Buffer + cmd.Stderr = &stderr + if err := cmd.Run(); err != nil { + // If there are no trust settings, the + // `security trust-settings-export` command + // fails with: + // exit status 1, SecTrustSettingsCreateExternalRepresentation: No Trust Settings were found. + // Rather than match on English substrings that are probably + // localized on macOS, just interpret any failure to mean that + // there are no trust settings. + if debugExecDarwinRoots { + println(fmt.Sprintf("crypto/x509: exec %q: %v, %s", cmd.Args, err, stderr.Bytes())) + } + return nil + } + + f, err := os.Open(file) + if err != nil { + return err + } + defer f.Close() + + // Gather all the runs of 40 capitalized hex characters. + br := bufio.NewReader(f) + var hexBuf bytes.Buffer + for { + b, err := br.ReadByte() + isHex := ('A' <= b && b <= 'F') || ('0' <= b && b <= '9') + if isHex { + hexBuf.WriteByte(b) + } else { + if hexBuf.Len() == 40 { + set[hexBuf.String()] = true + } + hexBuf.Reset() + } + if err == io.EOF { + break + } + if err != nil { + return err + } + } + + return nil + } + if err := run("user", "trust-settings-export"); err != nil { + return nil, fmt.Errorf("dump-trust-settings (user): %v", err) + } + if err := run("admin", "trust-settings-export", "-d"); err != nil { + return nil, fmt.Errorf("dump-trust-settings (admin): %v", err) + } + return set, nil +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/root_darwin_arm_gen.go b/vendor/github.com/google/certificate-transparency-go/x509/root_darwin_arm_gen.go new file mode 100644 index 00000000000..311e29b2a33 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_darwin_arm_gen.go @@ -0,0 +1,187 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build ignore + +// Generates root_darwin_armx.go. +// +// As of iOS 8, there is no API for querying the system trusted X.509 root +// certificates. We could use SecTrustEvaluate to verify that a trust chain +// exists for a certificate, but the x509 API requires returning the entire +// chain. +// +// Apple publishes the list of trusted root certificates for iOS on +// support.apple.com. So we parse the list and extract the certificates from +// an OS X machine and embed them into the x509 package. +package main + +import ( + "bytes" + "crypto/sha256" + "encoding/hex" + "encoding/pem" + "flag" + "fmt" + "go/format" + "io/ioutil" + "log" + "net/http" + "os/exec" + "regexp" + "strings" + + "github.com/google/certificate-transparency-go/x509" +) + +var output = flag.String("output", "root_darwin_armx.go", "file name to write") + +func main() { + certs, err := selectCerts() + if err != nil { + log.Fatal(err) + } + + buf := new(bytes.Buffer) + + fmt.Fprintf(buf, "// Code generated by root_darwin_arm_gen --output %s; DO NOT EDIT.\n", *output) + fmt.Fprintf(buf, "%s", header) + + fmt.Fprintf(buf, "const systemRootsPEM = `\n") + for _, cert := range certs { + b := &pem.Block{ + Type: "CERTIFICATE", + Bytes: cert.Raw, + } + if err := pem.Encode(buf, b); err != nil { + log.Fatal(err) + } + } + fmt.Fprintf(buf, "`") + + source, err := format.Source(buf.Bytes()) + if err != nil { + log.Fatal("source format error:", err) + } + if err := ioutil.WriteFile(*output, source, 0644); err != nil { + log.Fatal(err) + } +} + +func selectCerts() ([]*x509.Certificate, error) { + ids, err := fetchCertIDs() + if err != nil { + return nil, err + } + + scerts, err := sysCerts() + if err != nil { + return nil, err + } + + var certs []*x509.Certificate + for _, id := range ids { + if c, ok := scerts[id.fingerprint]; ok { + certs = append(certs, c) + } else { + fmt.Printf("WARNING: cannot find certificate: %s (fingerprint: %s)\n", id.name, id.fingerprint) + } + } + return certs, nil +} + +func sysCerts() (certs map[string]*x509.Certificate, err error) { + cmd := exec.Command("/usr/bin/security", "find-certificate", "-a", "-p", "/System/Library/Keychains/SystemRootCertificates.keychain") + data, err := cmd.Output() + if err != nil { + return nil, err + } + certs = make(map[string]*x509.Certificate) + for len(data) > 0 { + var block *pem.Block + block, data = pem.Decode(data) + if block == nil { + break + } + if block.Type != "CERTIFICATE" || len(block.Headers) != 0 { + continue + } + + cert, err := x509.ParseCertificate(block.Bytes) + if err != nil { + continue + } + + fingerprint := sha256.Sum256(cert.Raw) + certs[hex.EncodeToString(fingerprint[:])] = cert + } + return certs, nil +} + +type certID struct { + name string + fingerprint string +} + +// fetchCertIDs fetches IDs of iOS X509 certificates from apple.com. +func fetchCertIDs() ([]certID, error) { + // Download the iOS 11 support page. The index for all iOS versions is here: + // https://support.apple.com/en-us/HT204132 + resp, err := http.Get("https://support.apple.com/en-us/HT208125") + if err != nil { + return nil, err + } + defer resp.Body.Close() + body, err := ioutil.ReadAll(resp.Body) + if err != nil { + return nil, err + } + text := string(body) + text = text[strings.Index(text, "
")] + + var ids []certID + cols := make(map[string]int) + for i, rowmatch := range regexp.MustCompile("(?s)(.*?)").FindAllStringSubmatch(text, -1) { + row := rowmatch[1] + if i == 0 { + // Parse table header row to extract column names + for i, match := range regexp.MustCompile("(?s)(.*?)").FindAllStringSubmatch(row, -1) { + cols[match[1]] = i + } + continue + } + + values := regexp.MustCompile("(?s)(.*?)").FindAllStringSubmatch(row, -1) + name := values[cols["Certificate name"]][1] + fingerprint := values[cols["Fingerprint (SHA-256)"]][1] + fingerprint = strings.Replace(fingerprint, "
", "", -1) + fingerprint = strings.Replace(fingerprint, "\n", "", -1) + fingerprint = strings.Replace(fingerprint, " ", "", -1) + fingerprint = strings.ToLower(fingerprint) + + ids = append(ids, certID{ + name: name, + fingerprint: fingerprint, + }) + } + return ids, nil +} + +const header = ` +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build cgo +// +build darwin +// +build arm arm64 ios + +package x509 + +func loadSystemRoots() (*CertPool, error) { + p := NewCertPool() + p.AppendCertsFromPEM([]byte(systemRootsPEM)) + return p, nil +} +` diff --git a/vendor/github.com/google/certificate-transparency-go/x509/root_darwin_armx.go b/vendor/github.com/google/certificate-transparency-go/x509/root_darwin_armx.go new file mode 100644 index 00000000000..fcbbd6b1701 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_darwin_armx.go @@ -0,0 +1,4313 @@ +// Code generated by root_darwin_arm_gen --output root_darwin_armx.go; DO NOT EDIT. + +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build cgo +// +build darwin +// +build arm arm64 ios + +package x509 + +func loadSystemRoots() (*CertPool, error) { + p := NewCertPool() + p.AppendCertsFromPEM([]byte(systemRootsPEM)) + return p, nil +} + +const systemRootsPEM = ` +-----BEGIN CERTIFICATE----- +MIIEMjCCAxqgAwIBAgIBATANBgkqhkiG9w0BAQUFADB7MQswCQYDVQQGEwJHQjEb +MBkGA1UECAwSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYDVQQHDAdTYWxmb3JkMRow +GAYDVQQKDBFDb21vZG8gQ0EgTGltaXRlZDEhMB8GA1UEAwwYQUFBIENlcnRpZmlj +YXRlIFNlcnZpY2VzMB4XDTA0MDEwMTAwMDAwMFoXDTI4MTIzMTIzNTk1OVowezEL +MAkGA1UEBhMCR0IxGzAZBgNVBAgMEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UE +BwwHU2FsZm9yZDEaMBgGA1UECgwRQ29tb2RvIENBIExpbWl0ZWQxITAfBgNVBAMM +GEFBQSBDZXJ0aWZpY2F0ZSBTZXJ2aWNlczCCASIwDQYJKoZIhvcNAQEBBQADggEP +ADCCAQoCggEBAL5AnfRu4ep2hxxNRUSOvkbIgwadwSr+GB+O5AL686tdUIoWMQua +BtDFcCLNSS1UY8y2bmhGC1Pqy0wkwLxyTurxFa70VJoSCsN6sjNg4tqJVfMiWPPe +3M/vg4aijJRPn2jymJBGhCfHdr/jzDUsi14HZGWCwEiwqJH5YZ92IFCokcdmtet4 +YgNW8IoaE+oxox6gmf049vYnMlhvB/VruPsUK6+3qszWY19zjNoFmag4qMsXeDZR +rOme9Hg6jc8P2ULimAyrL58OAd7vn5lJ8S3frHRNG5i1R8XlKdH5kBjHYpy+g8cm +ez6KJcfA3Z3mNWgQIJ2P2N7Sw4ScDV7oL8kCAwEAAaOBwDCBvTAdBgNVHQ4EFgQU +oBEKIz6W8Qfs4q8p74Klf9AwpLQwDgYDVR0PAQH/BAQDAgEGMA8GA1UdEwEB/wQF +MAMBAf8wewYDVR0fBHQwcjA4oDagNIYyaHR0cDovL2NybC5jb21vZG9jYS5jb20v +QUFBQ2VydGlmaWNhdGVTZXJ2aWNlcy5jcmwwNqA0oDKGMGh0dHA6Ly9jcmwuY29t +b2RvLm5ldC9BQUFDZXJ0aWZpY2F0ZVNlcnZpY2VzLmNybDANBgkqhkiG9w0BAQUF +AAOCAQEACFb8AvCb6P+k+tZ7xkSAzk/ExfYAWMymtrwUSWgEdujm7l3sAg9g1o1Q +GE8mTgHj5rCl7r+8dFRBv/38ErjHT1r0iWAFf2C3BUrz9vHCv8S5dIa2LX1rzNLz +Rt0vxuBqw8M0Ayx9lt1awg6nCpnBBYurDC/zXDrPbDdVCYfeU0BsWO/8tqtlbgT2 +G9w84FoVxp7Z8VlIMCFlA2zs6SFz7JsDoeA3raAVGI/6ugLOpyypEBMs1OUIJqsi +l2D4kF501KKaU73yqWjgom7C12yxow+ev+to51byrvLjKzg6CYG1a4XXvi3tPxq3 +smPi9WIsgtRqAEFQ8TmDn5XpNpaYbg== +-----END CERTIFICATE----- +-----BEGIN CERTIFICATE----- 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+LnPqZih4zR0Uv6CPLy64Lo7yFIrM6bV8+2ydDKXhlg== +-----END CERTIFICATE----- +-----BEGIN CERTIFICATE----- +MIIEGDCCAwCgAwIBAgIBATANBgkqhkiG9w0BAQUFADBlMQswCQYDVQQGEwJTRTEU +MBIGA1UEChMLQWRkVHJ1c3QgQUIxHTAbBgNVBAsTFEFkZFRydXN0IFRUUCBOZXR3 +b3JrMSEwHwYDVQQDExhBZGRUcnVzdCBDbGFzcyAxIENBIFJvb3QwHhcNMDAwNTMw +MTAzODMxWhcNMjAwNTMwMTAzODMxWjBlMQswCQYDVQQGEwJTRTEUMBIGA1UEChML +QWRkVHJ1c3QgQUIxHTAbBgNVBAsTFEFkZFRydXN0IFRUUCBOZXR3b3JrMSEwHwYD +VQQDExhBZGRUcnVzdCBDbGFzcyAxIENBIFJvb3QwggEiMA0GCSqGSIb3DQEBAQUA +A4IBDwAwggEKAoIBAQCWltQhSWDia+hBBwzexODcEyPNwTXH+9ZOEQpnXvUGW2ul +CDtbKRY654eyNAbFvAWlA3yCyykQruGIgb3WntP+LVbBFc7jJp0VLhD7Bo8wBN6n +tGO0/7Gcrjyvd7ZWxbWroulpOj0OM3kyP3CCkplhbY0wCI9xP6ZIVxn4JdxLZlyl +dI+Yrsj5wAYi56xz36Uu+1LcsRVlIPo1Zmne3yzxbrww2ywkEtvrNTVokMsAsJch +PXQhI2U0K7t4WaPW4XY5mqRJjox0r26kmqPZm9I4XJuiGMx1I4S+6+JNM3GOGvDC ++Mcdoq0Dlyz4zyXG9rgkMbFjXZJ/Y/AlyVMuH79NAgMBAAGjgdIwgc8wHQYDVR0O +BBYEFJWxtPCUtr3H2tERCSG+wa9J/RB7MAsGA1UdDwQEAwIBBjAPBgNVHRMBAf8E 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+38eMpSe2OAtp87ZOqCwuIR1cRN8hXX4jdP5efrRKt6atH67gBhbim1vZZ3RrXYCP +KZ2GG9mcDZhtdhAoWORlsH9KmHmf4MMxfoArtYzAQDsRhtDLooY2YKTVMIJt2W7Q +DxIEM5dfT2Fa8OT5kavnHTu86M/0ay00fOJIYRyO82FEzG+gSqmUsE3a56k0enI4 +qEHMPJQRfevIpoy3hsvKMzvZPTeL+3o+hiznc9cKV6xkmxnr9A8ECIqsAxcZZPRa +JSKNNCyy9mgdEm3Tih4U2sSPpuIjhdV6Db1q4Ons7Be7QhtnqiXtRYMh/MHJfNVi +PvryxS3T/dRlAgMBAAGjgZ8wgZwwEwYJKwYBBAGCNxQCBAYeBABDAEEwCwYDVR0P +BAQDAgGGMA8GA1UdEwEB/wQFMAMBAf8wHQYDVR0OBBYEFMZPoj0GY4QJnM5i5ASs +jVy16bYbMDYGA1UdHwQvMC0wK6ApoCeGJWh0dHA6Ly9jcmwueHJhbXBzZWN1cml0 +eS5jb20vWEdDQS5jcmwwEAYJKwYBBAGCNxUBBAMCAQEwDQYJKoZIhvcNAQEFBQAD +ggEBAJEVOQMBG2f7Shz5CmBbodpNl2L5JFMn14JkTpAuw0kbK5rc/Kh4ZzXxHfAR +vbdI4xD2Dd8/0sm2qlWkSLoC295ZLhVbO50WfUfXN+pfTXYSNrsf16GBBEYgoyxt +qZ4Bfj8pzgCT3/3JknOJiWSe5yvkHJEs0rnOfc5vMZnT5r7SHpDwCRR5XCOrTdLa +IR9NmXmd4c8nnxCbHIgNsIpkQTG4DmyQJKSbXHGPurt+HBvbaoAPIbzp26a3QPSy +i6mx5O+aGtA9aZnuqCij4Tyz8LIRnM98QObd50N9otg6tamN8jSZxNQQ4Qb9CYQQ +O+7ETPTsJ3xCwnR8gooJybQDJbw= +-----END CERTIFICATE----- +` diff --git a/vendor/github.com/google/certificate-transparency-go/x509/root_linux.go b/vendor/github.com/google/certificate-transparency-go/x509/root_linux.go new file mode 100644 index 00000000000..aa1785e4c63 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_linux.go @@ -0,0 +1,14 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package x509 + +// Possible certificate files; stop after finding one. +var certFiles = []string{ + "/etc/ssl/certs/ca-certificates.crt", // Debian/Ubuntu/Gentoo etc. + "/etc/pki/tls/certs/ca-bundle.crt", // Fedora/RHEL 6 + "/etc/ssl/ca-bundle.pem", // OpenSUSE + "/etc/pki/tls/cacert.pem", // OpenELEC + "/etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem", // CentOS/RHEL 7 +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/root_nacl.go b/vendor/github.com/google/certificate-transparency-go/x509/root_nacl.go new file mode 100644 index 00000000000..4413f64738a --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_nacl.go @@ -0,0 +1,8 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package x509 + +// Possible certificate files; stop after finding one. +var certFiles = []string{} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/root_nocgo_darwin.go b/vendor/github.com/google/certificate-transparency-go/x509/root_nocgo_darwin.go new file mode 100644 index 00000000000..2ac4666aff6 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_nocgo_darwin.go @@ -0,0 +1,11 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build !cgo + +package x509 + +func loadSystemRoots() (*CertPool, error) { + return execSecurityRoots() +} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/root_plan9.go b/vendor/github.com/google/certificate-transparency-go/x509/root_plan9.go old mode 100755 new mode 100644 similarity index 71% rename from vendor/github.com/google/certificate-transparency/go/x509/root_plan9.go rename to vendor/github.com/google/certificate-transparency-go/x509/root_plan9.go index 9965caadee3..ebeb7dfccd8 --- a/vendor/github.com/google/certificate-transparency/go/x509/root_plan9.go +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_plan9.go @@ -6,7 +6,10 @@ package x509 -import "io/ioutil" +import ( + "io/ioutil" + "os" +) // Possible certificate files; stop after finding one. var certFiles = []string{ @@ -17,17 +20,18 @@ func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate return nil, nil } -func initSystemRoots() { +func loadSystemRoots() (*CertPool, error) { roots := NewCertPool() + var bestErr error for _, file := range certFiles { data, err := ioutil.ReadFile(file) if err == nil { roots.AppendCertsFromPEM(data) - systemRoots = roots - return + return roots, nil + } + if bestErr == nil || (os.IsNotExist(bestErr) && !os.IsNotExist(err)) { + bestErr = err } } - - // All of the files failed to load. systemRoots will be nil which will - // trigger a specific error at verification time. + return nil, bestErr } diff --git a/vendor/github.com/google/certificate-transparency-go/x509/root_solaris.go b/vendor/github.com/google/certificate-transparency-go/x509/root_solaris.go new file mode 100644 index 00000000000..e6d4e613994 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_solaris.go @@ -0,0 +1,12 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package x509 + +// Possible certificate files; stop after finding one. +var certFiles = []string{ + "/etc/certs/ca-certificates.crt", // Solaris 11.2+ + "/etc/ssl/certs/ca-certificates.crt", // Joyent SmartOS + "/etc/ssl/cacert.pem", // OmniOS +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/root_unix.go b/vendor/github.com/google/certificate-transparency-go/x509/root_unix.go new file mode 100644 index 00000000000..65b5a5fdbcc --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_unix.go @@ -0,0 +1,88 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build dragonfly freebsd linux nacl netbsd openbsd solaris + +package x509 + +import ( + "io/ioutil" + "os" +) + +// Possible directories with certificate files; stop after successfully +// reading at least one file from a directory. +var certDirectories = []string{ + "/etc/ssl/certs", // SLES10/SLES11, https://golang.org/issue/12139 + "/system/etc/security/cacerts", // Android + "/usr/local/share/certs", // FreeBSD + "/etc/pki/tls/certs", // Fedora/RHEL + "/etc/openssl/certs", // NetBSD +} + +const ( + // certFileEnv is the environment variable which identifies where to locate + // the SSL certificate file. If set this overrides the system default. + certFileEnv = "SSL_CERT_FILE" + + // certDirEnv is the environment variable which identifies which directory + // to check for SSL certificate files. If set this overrides the system default. + certDirEnv = "SSL_CERT_DIR" +) + +func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) { + return nil, nil +} + +func loadSystemRoots() (*CertPool, error) { + roots := NewCertPool() + + files := certFiles + if f := os.Getenv(certFileEnv); f != "" { + files = []string{f} + } + + var firstErr error + for _, file := range files { + data, err := ioutil.ReadFile(file) + if err == nil { + roots.AppendCertsFromPEM(data) + break + } + if firstErr == nil && !os.IsNotExist(err) { + firstErr = err + } + } + + dirs := certDirectories + if d := os.Getenv(certDirEnv); d != "" { + dirs = []string{d} + } + + for _, directory := range dirs { + fis, err := ioutil.ReadDir(directory) + if err != nil { + if firstErr == nil && !os.IsNotExist(err) { + firstErr = err + } + continue + } + rootsAdded := false + for _, fi := range fis { + data, err := ioutil.ReadFile(directory + "/" + fi.Name()) + if err == nil && roots.AppendCertsFromPEM(data) { + rootsAdded = true + } + } + if rootsAdded { + return roots, nil + } + } + + if len(roots.certs) > 0 { + return roots, nil + } + + return nil, firstErr +} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/root_windows.go b/vendor/github.com/google/certificate-transparency-go/x509/root_windows.go old mode 100755 new mode 100644 similarity index 86% rename from vendor/github.com/google/certificate-transparency/go/x509/root_windows.go rename to vendor/github.com/google/certificate-transparency-go/x509/root_windows.go index 81018b78fe6..92cc71692d8 --- a/vendor/github.com/google/certificate-transparency/go/x509/root_windows.go +++ b/vendor/github.com/google/certificate-transparency-go/x509/root_windows.go @@ -87,7 +87,7 @@ func checkChainTrustStatus(c *Certificate, chainCtx *syscall.CertChainContext) e status := chainCtx.TrustStatus.ErrorStatus switch status { case syscall.CERT_TRUST_IS_NOT_TIME_VALID: - return CertificateInvalidError{c, Expired} + return CertificateInvalidError{c, Expired, ""} default: return UnknownAuthorityError{c, nil, nil} } @@ -125,7 +125,7 @@ func checkChainSSLServerPolicy(c *Certificate, chainCtx *syscall.CertChainContex if status.Error != 0 { switch status.Error { case syscall.CERT_E_EXPIRED: - return CertificateInvalidError{c, Expired} + return CertificateInvalidError{c, Expired, ""} case syscall.CERT_E_CN_NO_MATCH: return HostnameError{c, opts.DNSName} case syscall.CERT_E_UNTRUSTEDROOT: @@ -179,7 +179,7 @@ func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate } // CertGetCertificateChain will traverse Windows's root stores - // in an attempt to build a verified certificate chain. Once + // in an attempt to build a verified certificate chain. Once // it has found a verified chain, it stops. MSDN docs on // CERT_CHAIN_CONTEXT: // @@ -225,5 +225,42 @@ func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate return chains, nil } -func initSystemRoots() { +func loadSystemRoots() (*CertPool, error) { + // TODO: restore this functionality on Windows. We tried to do + // it in Go 1.8 but had to revert it. See Issue 18609. + // Returning (nil, nil) was the old behavior, prior to CL 30578. + return nil, nil + + const CRYPT_E_NOT_FOUND = 0x80092004 + + store, err := syscall.CertOpenSystemStore(0, syscall.StringToUTF16Ptr("ROOT")) + if err != nil { + return nil, err + } + defer syscall.CertCloseStore(store, 0) + + roots := NewCertPool() + var cert *syscall.CertContext + for { + cert, err = syscall.CertEnumCertificatesInStore(store, cert) + if err != nil { + if errno, ok := err.(syscall.Errno); ok { + if errno == CRYPT_E_NOT_FOUND { + break + } + } + return nil, err + } + if cert == nil { + break + } + // Copy the buf, since ParseCertificate does not create its own copy. + buf := (*[1 << 20]byte)(unsafe.Pointer(cert.EncodedCert))[:] + buf2 := make([]byte, cert.Length) + copy(buf2, buf) + if c, err := ParseCertificate(buf2); err == nil { + roots.AddCert(c) + } + } + return roots, nil } diff --git a/vendor/github.com/google/certificate-transparency/go/x509/sec1.go b/vendor/github.com/google/certificate-transparency-go/x509/sec1.go old mode 100755 new mode 100644 similarity index 59% rename from vendor/github.com/google/certificate-transparency/go/x509/sec1.go rename to vendor/github.com/google/certificate-transparency-go/x509/sec1.go index dbc255f0caa..ae4f81e5609 --- a/vendor/github.com/google/certificate-transparency/go/x509/sec1.go +++ b/vendor/github.com/google/certificate-transparency-go/x509/sec1.go @@ -7,21 +7,20 @@ package x509 import ( "crypto/ecdsa" "crypto/elliptic" - // START CT CHANGES - "github.com/google/certificate-transparency/go/asn1" - // START CT CHANGES "errors" "fmt" "math/big" + + "github.com/google/certificate-transparency-go/asn1" ) const ecPrivKeyVersion = 1 // ecPrivateKey reflects an ASN.1 Elliptic Curve Private Key Structure. // References: -// RFC5915 -// SEC1 - http://www.secg.org/download/aid-780/sec1-v2.pdf -// Per RFC5915 the NamedCurveOID is marked as ASN.1 OPTIONAL, however in +// RFC 5915 +// SEC1 - http://www.secg.org/sec1-v2.pdf +// Per RFC 5915 the NamedCurveOID is marked as ASN.1 OPTIONAL, however in // most cases it is not. type ecPrivateKey struct { Version int @@ -31,19 +30,30 @@ type ecPrivateKey struct { } // ParseECPrivateKey parses an ASN.1 Elliptic Curve Private Key Structure. -func ParseECPrivateKey(der []byte) (key *ecdsa.PrivateKey, err error) { +func ParseECPrivateKey(der []byte) (*ecdsa.PrivateKey, error) { return parseECPrivateKey(nil, der) } // MarshalECPrivateKey marshals an EC private key into ASN.1, DER format. func MarshalECPrivateKey(key *ecdsa.PrivateKey) ([]byte, error) { - oid, ok := oidFromNamedCurve(key.Curve) + oid, ok := OIDFromNamedCurve(key.Curve) if !ok { return nil, errors.New("x509: unknown elliptic curve") } + + return marshalECPrivateKeyWithOID(key, oid) +} + +// marshalECPrivateKey marshals an EC private key into ASN.1, DER format and +// sets the curve ID to the given OID, or omits it if OID is nil. +func marshalECPrivateKeyWithOID(key *ecdsa.PrivateKey, oid asn1.ObjectIdentifier) ([]byte, error) { + privateKeyBytes := key.D.Bytes() + paddedPrivateKey := make([]byte, (key.Curve.Params().N.BitLen()+7)/8) + copy(paddedPrivateKey[len(paddedPrivateKey)-len(privateKeyBytes):], privateKeyBytes) + return asn1.Marshal(ecPrivateKey{ Version: 1, - PrivateKey: key.D.Bytes(), + PrivateKey: paddedPrivateKey, NamedCurveOID: oid, PublicKey: asn1.BitString{Bytes: elliptic.Marshal(key.Curve, key.X, key.Y)}, }) @@ -73,13 +83,30 @@ func parseECPrivateKey(namedCurveOID *asn1.ObjectIdentifier, der []byte) (key *e } k := new(big.Int).SetBytes(privKey.PrivateKey) - if k.Cmp(curve.Params().N) >= 0 { + curveOrder := curve.Params().N + if k.Cmp(curveOrder) >= 0 { return nil, errors.New("x509: invalid elliptic curve private key value") } priv := new(ecdsa.PrivateKey) priv.Curve = curve priv.D = k - priv.X, priv.Y = curve.ScalarBaseMult(privKey.PrivateKey) + + privateKey := make([]byte, (curveOrder.BitLen()+7)/8) + + // Some private keys have leading zero padding. This is invalid + // according to [SEC1], but this code will ignore it. + for len(privKey.PrivateKey) > len(privateKey) { + if privKey.PrivateKey[0] != 0 { + return nil, errors.New("x509: invalid private key length") + } + privKey.PrivateKey = privKey.PrivateKey[1:] + } + + // Some private keys remove all leading zeros, this is also invalid + // according to [SEC1] but since OpenSSL used to do this, we ignore + // this too. + copy(privateKey[len(privateKey)-len(privKey.PrivateKey):], privKey.PrivateKey) + priv.X, priv.Y = curve.ScalarBaseMult(privateKey) return priv, nil } diff --git a/vendor/github.com/google/certificate-transparency-go/x509/test-dir.crt b/vendor/github.com/google/certificate-transparency-go/x509/test-dir.crt new file mode 100644 index 00000000000..b7fc9c51861 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/test-dir.crt @@ -0,0 +1,31 @@ +-----BEGIN CERTIFICATE----- +MIIFazCCA1OgAwIBAgIJAL8a/lsnspOqMA0GCSqGSIb3DQEBCwUAMEwxCzAJBgNV +BAYTAlVLMRMwEQYDVQQIDApUZXN0LVN0YXRlMRUwEwYDVQQKDAxHb2xhbmcgVGVz +dHMxETAPBgNVBAMMCHRlc3QtZGlyMB4XDTE3MDIwMTIzNTAyN1oXDTI3MDEzMDIz +NTAyN1owTDELMAkGA1UEBhMCVUsxEzARBgNVBAgMClRlc3QtU3RhdGUxFTATBgNV +BAoMDEdvbGFuZyBUZXN0czERMA8GA1UEAwwIdGVzdC1kaXIwggIiMA0GCSqGSIb3 +DQEBAQUAA4ICDwAwggIKAoICAQDzBoi43Yn30KN13PKFHu8LA4UmgCRToTukLItM +WK2Je45grs/axg9n3YJOXC6hmsyrkOnyBcx1xVNgSrOAll7fSjtChRIX72Xrloxu +XewtWVIrijqz6oylbvEmbRT3O8uynu5rF82Pmdiy8oiSfdywjKuPnE0hjV1ZSCql +MYcXqA+f0JFD8kMv4pbtxjGH8f2DkYQz+hHXLrJH4/MEYdVMQXoz/GDzLyOkrXBN +hpMaBBqg1p0P+tRdfLXuliNzA9vbZylzpF1YZ0gvsr0S5Y6LVtv7QIRygRuLY4kF +k+UYuFq8NrV8TykS7FVnO3tf4XcYZ7r2KV5FjYSrJtNNo85BV5c3xMD3fJ2XcOWk ++oD1ATdgAM3aKmSOxNtNItKKxBe1mkqDH41NbWx7xMad78gDznyeT0tjEOltN2bM +uXU1R/jgR/vq5Ec0AhXJyL/ziIcmuV2fSl/ZxT4ARD+16tgPiIx+welTf0v27/JY +adlfkkL5XsPRrbSguISrj7JeaO/gjG3KnDVHcZvYBpDfHqRhCgrosfe26TZcTXx2 +cRxOfvBjMz1zJAg+esuUzSkerreyRhzD7RpeZTwi6sxvx82MhYMbA3w1LtgdABio +9JRqZy3xqsIbNv7N46WO/qXL1UMRKb1UyHeW8g8btboz+B4zv1U0Nj+9qxPBbQui +dgL9LQIDAQABo1AwTjAdBgNVHQ4EFgQUy0/0W8nwQfz2tO6AZ2jPkEiTzvUwHwYD +VR0jBBgwFoAUy0/0W8nwQfz2tO6AZ2jPkEiTzvUwDAYDVR0TBAUwAwEB/zANBgkq +hkiG9w0BAQsFAAOCAgEAvEVnUYsIOt87rggmLPqEueynkuQ+562M8EDHSQl82zbe +xDCxeg3DvPgKb+RvaUdt1362z/szK10SoeMgx6+EQLoV9LiVqXwNqeYfixrhrdw3 +ppAhYYhymdkbUQCEMHypmXP1vPhAz4o8Bs+eES1M+zO6ErBiD7SqkmBElT+GixJC +6epC9ZQFs+dw3lPlbiZSsGE85sqc3VAs0/JgpL/pb1/Eg4s0FUhZD2C2uWdSyZGc +g0/v3aXJCp4j/9VoNhI1WXz3M45nysZIL5OQgXymLqJElQa1pZ3Wa4i/nidvT4AT +Xlxc/qijM8set/nOqp7hVd5J0uG6qdwLRILUddZ6OpXd7ZNi1EXg+Bpc7ehzGsDt +3UFGzYXDjxYnK2frQfjLS8stOQIqSrGthW6x0fdkVx0y8BByvd5J6+JmZl4UZfzA +m99VxXSt4B9x6BvnY7ktzcFDOjtuLc4B/7yg9fv1eQuStA4cHGGAttsCg1X/Kx8W +PvkkeH0UWDZ9vhH9K36703z89da6MWF+bz92B0+4HoOmlVaXRkvblsNaynJnL0LC +Ayry7QBxuh5cMnDdRwJB3AVJIiJ1GVpb7aGvBOnx+s2lwRv9HWtghb+cbwwktx1M +JHyBf3GZNSWTpKY7cD8V+NnBv3UuioOVVo+XAU4LF/bYUjdRpxWADJizNtZrtFo= +-----END CERTIFICATE----- diff --git a/vendor/github.com/google/certificate-transparency-go/x509/test-file.crt b/vendor/github.com/google/certificate-transparency-go/x509/test-file.crt new file mode 100644 index 00000000000..caa83b9f824 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/test-file.crt @@ -0,0 +1,32 @@ +-----BEGIN CERTIFICATE----- +MIIFbTCCA1WgAwIBAgIJAN338vEmMtLsMA0GCSqGSIb3DQEBCwUAME0xCzAJBgNV +BAYTAlVLMRMwEQYDVQQIDApUZXN0LVN0YXRlMRUwEwYDVQQKDAxHb2xhbmcgVGVz +dHMxEjAQBgNVBAMMCXRlc3QtZmlsZTAeFw0xNzAyMDEyMzUyMDhaFw0yNzAxMzAy +MzUyMDhaME0xCzAJBgNVBAYTAlVLMRMwEQYDVQQIDApUZXN0LVN0YXRlMRUwEwYD +VQQKDAxHb2xhbmcgVGVzdHMxEjAQBgNVBAMMCXRlc3QtZmlsZTCCAiIwDQYJKoZI +hvcNAQEBBQADggIPADCCAgoCggIBAPMGiLjdiffQo3Xc8oUe7wsDhSaAJFOhO6Qs +i0xYrYl7jmCuz9rGD2fdgk5cLqGazKuQ6fIFzHXFU2BKs4CWXt9KO0KFEhfvZeuW +jG5d7C1ZUiuKOrPqjKVu8SZtFPc7y7Ke7msXzY+Z2LLyiJJ93LCMq4+cTSGNXVlI +KqUxhxeoD5/QkUPyQy/ilu3GMYfx/YORhDP6Edcuskfj8wRh1UxBejP8YPMvI6St +cE2GkxoEGqDWnQ/61F18te6WI3MD29tnKXOkXVhnSC+yvRLljotW2/tAhHKBG4tj +iQWT5Ri4Wrw2tXxPKRLsVWc7e1/hdxhnuvYpXkWNhKsm002jzkFXlzfEwPd8nZdw +5aT6gPUBN2AAzdoqZI7E200i0orEF7WaSoMfjU1tbHvExp3vyAPOfJ5PS2MQ6W03 +Zsy5dTVH+OBH++rkRzQCFcnIv/OIhya5XZ9KX9nFPgBEP7Xq2A+IjH7B6VN/S/bv +8lhp2V+SQvlew9GttKC4hKuPsl5o7+CMbcqcNUdxm9gGkN8epGEKCuix97bpNlxN +fHZxHE5+8GMzPXMkCD56y5TNKR6ut7JGHMPtGl5lPCLqzG/HzYyFgxsDfDUu2B0A +GKj0lGpnLfGqwhs2/s3jpY7+pcvVQxEpvVTId5byDxu1ujP4HjO/VTQ2P72rE8Ft +C6J2Av0tAgMBAAGjUDBOMB0GA1UdDgQWBBTLT/RbyfBB/Pa07oBnaM+QSJPO9TAf +BgNVHSMEGDAWgBTLT/RbyfBB/Pa07oBnaM+QSJPO9TAMBgNVHRMEBTADAQH/MA0G +CSqGSIb3DQEBCwUAA4ICAQB3sCntCcQwhMgRPPyvOCMyTcQ/Iv+cpfxz2Ck14nlx +AkEAH2CH0ov5GWTt07/ur3aa5x+SAKi0J3wTD1cdiw4U/6Uin6jWGKKxvoo4IaeK +SbM8w/6eKx6UbmHx7PA/eRABY9tTlpdPCVgw7/o3WDr03QM+IAtatzvaCPPczake +pbdLwmBZB/v8V+6jUajy6jOgdSH0PyffGnt7MWgDETmNC6p/Xigp5eh+C8Fb4NGT +xgHES5PBC+sruWp4u22bJGDKTvYNdZHsnw/CaKQWNsQqwisxa3/8N5v+PCff/pxl +r05pE3PdHn9JrCl4iWdVlgtiI9BoPtQyDfa/OEFaScE8KYR8LxaAgdgp3zYncWls +BpwQ6Y/A2wIkhlD9eEp5Ib2hz7isXOs9UwjdriKqrBXqcIAE5M+YIk3+KAQKxAtd +4YsK3CSJ010uphr12YKqlScj4vuKFjuOtd5RyyMIxUG3lrrhAu2AzCeKCLdVgA8+ +75FrYMApUdvcjp4uzbBoED4XRQlx9kdFHVbYgmE/+yddBYJM8u4YlgAL0hW2/D8p +z9JWIfxVmjJnBnXaKGBuiUyZ864A3PJndP6EMMo7TzS2CDnfCYuJjvI0KvDjFNmc +rQA04+qfMSEz3nmKhbbZu4eYLzlADhfH8tT4GMtXf71WLA5AUHGf2Y4+HIHTsmHG +vQ== +-----END CERTIFICATE----- diff --git a/vendor/github.com/google/certificate-transparency-go/x509/verify.go b/vendor/github.com/google/certificate-transparency-go/x509/verify.go new file mode 100644 index 00000000000..ee4c97bfb99 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/verify.go @@ -0,0 +1,1035 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package x509 + +import ( + "bytes" + "errors" + "fmt" + "net" + "net/url" + "reflect" + "runtime" + "strings" + "time" + "unicode/utf8" +) + +type InvalidReason int + +const ( + // NotAuthorizedToSign results when a certificate is signed by another + // which isn't marked as a CA certificate. + NotAuthorizedToSign InvalidReason = iota + // Expired results when a certificate has expired, based on the time + // given in the VerifyOptions. + Expired + // CANotAuthorizedForThisName results when an intermediate or root + // certificate has a name constraint which doesn't permit a DNS or + // other name (including IP address) in the leaf certificate. + CANotAuthorizedForThisName + // TooManyIntermediates results when a path length constraint is + // violated. + TooManyIntermediates + // IncompatibleUsage results when the certificate's key usage indicates + // that it may only be used for a different purpose. + IncompatibleUsage + // NameMismatch results when the subject name of a parent certificate + // does not match the issuer name in the child. + NameMismatch + // NameConstraintsWithoutSANs results when a leaf certificate doesn't + // contain a Subject Alternative Name extension, but a CA certificate + // contains name constraints. + NameConstraintsWithoutSANs + // UnconstrainedName results when a CA certificate contains permitted + // name constraints, but leaf certificate contains a name of an + // unsupported or unconstrained type. + UnconstrainedName + // TooManyConstraints results when the number of comparision operations + // needed to check a certificate exceeds the limit set by + // VerifyOptions.MaxConstraintComparisions. This limit exists to + // prevent pathological certificates can consuming excessive amounts of + // CPU time to verify. + TooManyConstraints + // CANotAuthorizedForExtKeyUsage results when an intermediate or root + // certificate does not permit an extended key usage that is claimed by + // the leaf certificate. + CANotAuthorizedForExtKeyUsage +) + +// CertificateInvalidError results when an odd error occurs. Users of this +// library probably want to handle all these errors uniformly. +type CertificateInvalidError struct { + Cert *Certificate + Reason InvalidReason + Detail string +} + +func (e CertificateInvalidError) Error() string { + switch e.Reason { + case NotAuthorizedToSign: + return "x509: certificate is not authorized to sign other certificates" + case Expired: + return "x509: certificate has expired or is not yet valid" + case CANotAuthorizedForThisName: + return "x509: a root or intermediate certificate is not authorized to sign for this name: " + e.Detail + case CANotAuthorizedForExtKeyUsage: + return "x509: a root or intermediate certificate is not authorized for an extended key usage: " + e.Detail + case TooManyIntermediates: + return "x509: too many intermediates for path length constraint" + case IncompatibleUsage: + return "x509: certificate specifies an incompatible key usage: " + e.Detail + case NameMismatch: + return "x509: issuer name does not match subject from issuing certificate" + case NameConstraintsWithoutSANs: + return "x509: issuer has name constraints but leaf doesn't have a SAN extension" + case UnconstrainedName: + return "x509: issuer has name constraints but leaf contains unknown or unconstrained name: " + e.Detail + } + return "x509: unknown error" +} + +// HostnameError results when the set of authorized names doesn't match the +// requested name. +type HostnameError struct { + Certificate *Certificate + Host string +} + +func (h HostnameError) Error() string { + c := h.Certificate + + var valid string + if ip := net.ParseIP(h.Host); ip != nil { + // Trying to validate an IP + if len(c.IPAddresses) == 0 { + return "x509: cannot validate certificate for " + h.Host + " because it doesn't contain any IP SANs" + } + for _, san := range c.IPAddresses { + if len(valid) > 0 { + valid += ", " + } + valid += san.String() + } + } else { + if c.hasSANExtension() { + valid = strings.Join(c.DNSNames, ", ") + } else { + valid = c.Subject.CommonName + } + } + + if len(valid) == 0 { + return "x509: certificate is not valid for any names, but wanted to match " + h.Host + } + return "x509: certificate is valid for " + valid + ", not " + h.Host +} + +// UnknownAuthorityError results when the certificate issuer is unknown +type UnknownAuthorityError struct { + Cert *Certificate + // hintErr contains an error that may be helpful in determining why an + // authority wasn't found. + hintErr error + // hintCert contains a possible authority certificate that was rejected + // because of the error in hintErr. + hintCert *Certificate +} + +func (e UnknownAuthorityError) Error() string { + s := "x509: certificate signed by unknown authority" + if e.hintErr != nil { + certName := e.hintCert.Subject.CommonName + if len(certName) == 0 { + if len(e.hintCert.Subject.Organization) > 0 { + certName = e.hintCert.Subject.Organization[0] + } else { + certName = "serial:" + e.hintCert.SerialNumber.String() + } + } + s += fmt.Sprintf(" (possibly because of %q while trying to verify candidate authority certificate %q)", e.hintErr, certName) + } + return s +} + +// SystemRootsError results when we fail to load the system root certificates. +type SystemRootsError struct { + Err error +} + +func (se SystemRootsError) Error() string { + msg := "x509: failed to load system roots and no roots provided" + if se.Err != nil { + return msg + "; " + se.Err.Error() + } + return msg +} + +// errNotParsed is returned when a certificate without ASN.1 contents is +// verified. Platform-specific verification needs the ASN.1 contents. +var errNotParsed = errors.New("x509: missing ASN.1 contents; use ParseCertificate") + +// VerifyOptions contains parameters for Certificate.Verify. It's a structure +// because other PKIX verification APIs have ended up needing many options. +type VerifyOptions struct { + DNSName string + Intermediates *CertPool + Roots *CertPool // if nil, the system roots are used + CurrentTime time.Time // if zero, the current time is used + DisableTimeChecks bool + // KeyUsage specifies which Extended Key Usage values are acceptable. + // An empty list means ExtKeyUsageServerAuth. Key usage is considered a + // constraint down the chain which mirrors Windows CryptoAPI behavior, + // but not the spec. To accept any key usage, include ExtKeyUsageAny. + KeyUsages []ExtKeyUsage + // MaxConstraintComparisions is the maximum number of comparisons to + // perform when checking a given certificate's name constraints. If + // zero, a sensible default is used. This limit prevents pathalogical + // certificates from consuming excessive amounts of CPU time when + // validating. + MaxConstraintComparisions int +} + +const ( + leafCertificate = iota + intermediateCertificate + rootCertificate +) + +// rfc2821Mailbox represents a “mailbox” (which is an email address to most +// people) by breaking it into the “local” (i.e. before the '@') and “domain” +// parts. +type rfc2821Mailbox struct { + local, domain string +} + +// parseRFC2821Mailbox parses an email address into local and domain parts, +// based on the ABNF for a “Mailbox” from RFC 2821. According to +// https://tools.ietf.org/html/rfc5280#section-4.2.1.6 that's correct for an +// rfc822Name from a certificate: “The format of an rfc822Name is a "Mailbox" +// as defined in https://tools.ietf.org/html/rfc2821#section-4.1.2”. +func parseRFC2821Mailbox(in string) (mailbox rfc2821Mailbox, ok bool) { + if len(in) == 0 { + return mailbox, false + } + + localPartBytes := make([]byte, 0, len(in)/2) + + if in[0] == '"' { + // Quoted-string = DQUOTE *qcontent DQUOTE + // non-whitespace-control = %d1-8 / %d11 / %d12 / %d14-31 / %d127 + // qcontent = qtext / quoted-pair + // qtext = non-whitespace-control / + // %d33 / %d35-91 / %d93-126 + // quoted-pair = ("\" text) / obs-qp + // text = %d1-9 / %d11 / %d12 / %d14-127 / obs-text + // + // (Names beginning with “obs-” are the obsolete syntax from + // https://tools.ietf.org/html/rfc2822#section-4. Since it has + // been 16 years, we no longer accept that.) + in = in[1:] + QuotedString: + for { + if len(in) == 0 { + return mailbox, false + } + c := in[0] + in = in[1:] + + switch { + case c == '"': + break QuotedString + + case c == '\\': + // quoted-pair + if len(in) == 0 { + return mailbox, false + } + if in[0] == 11 || + in[0] == 12 || + (1 <= in[0] && in[0] <= 9) || + (14 <= in[0] && in[0] <= 127) { + localPartBytes = append(localPartBytes, in[0]) + in = in[1:] + } else { + return mailbox, false + } + + case c == 11 || + c == 12 || + // Space (char 32) is not allowed based on the + // BNF, but RFC 3696 gives an example that + // assumes that it is. Several “verified” + // errata continue to argue about this point. + // We choose to accept it. + c == 32 || + c == 33 || + c == 127 || + (1 <= c && c <= 8) || + (14 <= c && c <= 31) || + (35 <= c && c <= 91) || + (93 <= c && c <= 126): + // qtext + localPartBytes = append(localPartBytes, c) + + default: + return mailbox, false + } + } + } else { + // Atom ("." Atom)* + NextChar: + for len(in) > 0 { + // atext from https://tools.ietf.org/html/rfc2822#section-3.2.4 + c := in[0] + + switch { + case c == '\\': + // Examples given in RFC 3696 suggest that + // escaped characters can appear outside of a + // quoted string. Several “verified” errata + // continue to argue the point. We choose to + // accept it. + in = in[1:] + if len(in) == 0 { + return mailbox, false + } + fallthrough + + case ('0' <= c && c <= '9') || + ('a' <= c && c <= 'z') || + ('A' <= c && c <= 'Z') || + c == '!' || c == '#' || c == '$' || c == '%' || + c == '&' || c == '\'' || c == '*' || c == '+' || + c == '-' || c == '/' || c == '=' || c == '?' || + c == '^' || c == '_' || c == '`' || c == '{' || + c == '|' || c == '}' || c == '~' || c == '.': + localPartBytes = append(localPartBytes, in[0]) + in = in[1:] + + default: + break NextChar + } + } + + if len(localPartBytes) == 0 { + return mailbox, false + } + + // https://tools.ietf.org/html/rfc3696#section-3 + // “period (".") may also appear, but may not be used to start + // or end the local part, nor may two or more consecutive + // periods appear.” + twoDots := []byte{'.', '.'} + if localPartBytes[0] == '.' || + localPartBytes[len(localPartBytes)-1] == '.' || + bytes.Contains(localPartBytes, twoDots) { + return mailbox, false + } + } + + if len(in) == 0 || in[0] != '@' { + return mailbox, false + } + in = in[1:] + + // The RFC species a format for domains, but that's known to be + // violated in practice so we accept that anything after an '@' is the + // domain part. + if _, ok := domainToReverseLabels(in); !ok { + return mailbox, false + } + + mailbox.local = string(localPartBytes) + mailbox.domain = in + return mailbox, true +} + +// domainToReverseLabels converts a textual domain name like foo.example.com to +// the list of labels in reverse order, e.g. ["com", "example", "foo"]. +func domainToReverseLabels(domain string) (reverseLabels []string, ok bool) { + for len(domain) > 0 { + if i := strings.LastIndexByte(domain, '.'); i == -1 { + reverseLabels = append(reverseLabels, domain) + domain = "" + } else { + reverseLabels = append(reverseLabels, domain[i+1:len(domain)]) + domain = domain[:i] + } + } + + if len(reverseLabels) > 0 && len(reverseLabels[0]) == 0 { + // An empty label at the end indicates an absolute value. + return nil, false + } + + for _, label := range reverseLabels { + if len(label) == 0 { + // Empty labels are otherwise invalid. + return nil, false + } + + for _, c := range label { + if c < 33 || c > 126 { + // Invalid character. + return nil, false + } + } + } + + return reverseLabels, true +} + +func matchEmailConstraint(mailbox rfc2821Mailbox, constraint string) (bool, error) { + // If the constraint contains an @, then it specifies an exact mailbox + // name. + if strings.Contains(constraint, "@") { + constraintMailbox, ok := parseRFC2821Mailbox(constraint) + if !ok { + return false, fmt.Errorf("x509: internal error: cannot parse constraint %q", constraint) + } + return mailbox.local == constraintMailbox.local && strings.EqualFold(mailbox.domain, constraintMailbox.domain), nil + } + + // Otherwise the constraint is like a DNS constraint of the domain part + // of the mailbox. + return matchDomainConstraint(mailbox.domain, constraint) +} + +func matchURIConstraint(uri *url.URL, constraint string) (bool, error) { + // https://tools.ietf.org/html/rfc5280#section-4.2.1.10 + // “a uniformResourceIdentifier that does not include an authority + // component with a host name specified as a fully qualified domain + // name (e.g., if the URI either does not include an authority + // component or includes an authority component in which the host name + // is specified as an IP address), then the application MUST reject the + // certificate.” + + host := uri.Host + if len(host) == 0 { + return false, fmt.Errorf("URI with empty host (%q) cannot be matched against constraints", uri.String()) + } + + if strings.Contains(host, ":") && !strings.HasSuffix(host, "]") { + var err error + host, _, err = net.SplitHostPort(uri.Host) + if err != nil { + return false, err + } + } + + if strings.HasPrefix(host, "[") && strings.HasSuffix(host, "]") || + net.ParseIP(host) != nil { + return false, fmt.Errorf("URI with IP (%q) cannot be matched against constraints", uri.String()) + } + + return matchDomainConstraint(host, constraint) +} + +func matchIPConstraint(ip net.IP, constraint *net.IPNet) (bool, error) { + if len(ip) != len(constraint.IP) { + return false, nil + } + + for i := range ip { + if mask := constraint.Mask[i]; ip[i]&mask != constraint.IP[i]&mask { + return false, nil + } + } + + return true, nil +} + +func matchDomainConstraint(domain, constraint string) (bool, error) { + // The meaning of zero length constraints is not specified, but this + // code follows NSS and accepts them as matching everything. + if len(constraint) == 0 { + return true, nil + } + + domainLabels, ok := domainToReverseLabels(domain) + if !ok { + return false, fmt.Errorf("x509: internal error: cannot parse domain %q", domain) + } + + // RFC 5280 says that a leading period in a domain name means that at + // least one label must be prepended, but only for URI and email + // constraints, not DNS constraints. The code also supports that + // behaviour for DNS constraints. + + mustHaveSubdomains := false + if constraint[0] == '.' { + mustHaveSubdomains = true + constraint = constraint[1:] + } + + constraintLabels, ok := domainToReverseLabels(constraint) + if !ok { + return false, fmt.Errorf("x509: internal error: cannot parse domain %q", constraint) + } + + if len(domainLabels) < len(constraintLabels) || + (mustHaveSubdomains && len(domainLabels) == len(constraintLabels)) { + return false, nil + } + + for i, constraintLabel := range constraintLabels { + if !strings.EqualFold(constraintLabel, domainLabels[i]) { + return false, nil + } + } + + return true, nil +} + +// checkNameConstraints checks that c permits a child certificate to claim the +// given name, of type nameType. The argument parsedName contains the parsed +// form of name, suitable for passing to the match function. The total number +// of comparisons is tracked in the given count and should not exceed the given +// limit. +func (c *Certificate) checkNameConstraints(count *int, + maxConstraintComparisons int, + nameType string, + name string, + parsedName interface{}, + match func(parsedName, constraint interface{}) (match bool, err error), + permitted, excluded interface{}) error { + + excludedValue := reflect.ValueOf(excluded) + + *count += excludedValue.Len() + if *count > maxConstraintComparisons { + return CertificateInvalidError{c, TooManyConstraints, ""} + } + + for i := 0; i < excludedValue.Len(); i++ { + constraint := excludedValue.Index(i).Interface() + match, err := match(parsedName, constraint) + if err != nil { + return CertificateInvalidError{c, CANotAuthorizedForThisName, err.Error()} + } + + if match { + return CertificateInvalidError{c, CANotAuthorizedForThisName, fmt.Sprintf("%s %q is excluded by constraint %q", nameType, name, constraint)} + } + } + + permittedValue := reflect.ValueOf(permitted) + + *count += permittedValue.Len() + if *count > maxConstraintComparisons { + return CertificateInvalidError{c, TooManyConstraints, ""} + } + + ok := true + for i := 0; i < permittedValue.Len(); i++ { + constraint := permittedValue.Index(i).Interface() + + var err error + if ok, err = match(parsedName, constraint); err != nil { + return CertificateInvalidError{c, CANotAuthorizedForThisName, err.Error()} + } + + if ok { + break + } + } + + if !ok { + return CertificateInvalidError{c, CANotAuthorizedForThisName, fmt.Sprintf("%s %q is not permitted by any constraint", nameType, name)} + } + + return nil +} + +// ekuPermittedBy returns true iff the given extended key usage is permitted by +// the given EKU from a certificate. Normally, this would be a simple +// comparison plus a special case for the “any” EKU. But, in order to support +// existing certificates, some exceptions are made. +func ekuPermittedBy(eku, certEKU ExtKeyUsage) bool { + if certEKU == ExtKeyUsageAny || eku == certEKU { + return true + } + + // Some exceptions are made to support existing certificates. Firstly, + // the ServerAuth and SGC EKUs are treated as a group. + mapServerAuthEKUs := func(eku ExtKeyUsage) ExtKeyUsage { + if eku == ExtKeyUsageNetscapeServerGatedCrypto || eku == ExtKeyUsageMicrosoftServerGatedCrypto { + return ExtKeyUsageServerAuth + } + return eku + } + + eku = mapServerAuthEKUs(eku) + certEKU = mapServerAuthEKUs(certEKU) + + if eku == certEKU || + // ServerAuth in a CA permits ClientAuth in the leaf. + (eku == ExtKeyUsageClientAuth && certEKU == ExtKeyUsageServerAuth) || + // Any CA may issue an OCSP responder certificate. + eku == ExtKeyUsageOCSPSigning || + // Code-signing CAs can use Microsoft's commercial and + // kernel-mode EKUs. + ((eku == ExtKeyUsageMicrosoftCommercialCodeSigning || eku == ExtKeyUsageMicrosoftKernelCodeSigning) && certEKU == ExtKeyUsageCodeSigning) { + return true + } + + return false +} + +// isValid performs validity checks on c given that it is a candidate to append +// to the chain in currentChain. +func (c *Certificate) isValid(certType int, currentChain []*Certificate, opts *VerifyOptions) error { + if len(c.UnhandledCriticalExtensions) > 0 { + return UnhandledCriticalExtension{ID: c.UnhandledCriticalExtensions[0]} + } + + if len(currentChain) > 0 { + child := currentChain[len(currentChain)-1] + if !bytes.Equal(child.RawIssuer, c.RawSubject) { + return CertificateInvalidError{c, NameMismatch, ""} + } + } + + if !opts.DisableTimeChecks { + now := opts.CurrentTime + if now.IsZero() { + now = time.Now() + } + if now.Before(c.NotBefore) || now.After(c.NotAfter) { + return CertificateInvalidError{c, Expired, ""} + } + } + + maxConstraintComparisons := opts.MaxConstraintComparisions + if maxConstraintComparisons == 0 { + maxConstraintComparisons = 250000 + } + comparisonCount := 0 + + var leaf *Certificate + if certType == intermediateCertificate || certType == rootCertificate { + if len(currentChain) == 0 { + return errors.New("x509: internal error: empty chain when appending CA cert") + } + leaf = currentChain[0] + } + + if (certType == intermediateCertificate || certType == rootCertificate) && c.hasNameConstraints() { + sanExtension, ok := leaf.getSANExtension() + if !ok { + // This is the deprecated, legacy case of depending on + // the CN as a hostname. Chains modern enough to be + // using name constraints should not be depending on + // CNs. + return CertificateInvalidError{c, NameConstraintsWithoutSANs, ""} + } + + err := forEachSAN(sanExtension, func(tag int, data []byte) error { + switch tag { + case nameTypeEmail: + name := string(data) + mailbox, ok := parseRFC2821Mailbox(name) + if !ok { + // This certificate should not have parsed. + return errors.New("x509: internal error: rfc822Name SAN failed to parse") + } + + if err := c.checkNameConstraints(&comparisonCount, maxConstraintComparisons, "email address", name, mailbox, + func(parsedName, constraint interface{}) (bool, error) { + return matchEmailConstraint(parsedName.(rfc2821Mailbox), constraint.(string)) + }, c.PermittedEmailAddresses, c.ExcludedEmailAddresses); err != nil { + return err + } + + case nameTypeDNS: + name := string(data) + if err := c.checkNameConstraints(&comparisonCount, maxConstraintComparisons, "DNS name", name, name, + func(parsedName, constraint interface{}) (bool, error) { + return matchDomainConstraint(parsedName.(string), constraint.(string)) + }, c.PermittedDNSDomains, c.ExcludedDNSDomains); err != nil { + return err + } + + case nameTypeURI: + name := string(data) + uri, err := url.Parse(name) + if err != nil { + return fmt.Errorf("x509: internal error: URI SAN %q failed to parse", name) + } + + if err := c.checkNameConstraints(&comparisonCount, maxConstraintComparisons, "URI", name, uri, + func(parsedName, constraint interface{}) (bool, error) { + return matchURIConstraint(parsedName.(*url.URL), constraint.(string)) + }, c.PermittedURIDomains, c.ExcludedURIDomains); err != nil { + return err + } + + case nameTypeIP: + ip := net.IP(data) + if l := len(ip); l != net.IPv4len && l != net.IPv6len { + return fmt.Errorf("x509: internal error: IP SAN %x failed to parse", data) + } + + if err := c.checkNameConstraints(&comparisonCount, maxConstraintComparisons, "IP address", ip.String(), ip, + func(parsedName, constraint interface{}) (bool, error) { + return matchIPConstraint(parsedName.(net.IP), constraint.(*net.IPNet)) + }, c.PermittedIPRanges, c.ExcludedIPRanges); err != nil { + return err + } + + default: + // Unknown SAN types are ignored. + } + + return nil + }) + + if err != nil { + return err + } + } + + checkEKUs := certType == intermediateCertificate + + // If no extended key usages are specified, then all are acceptable. + if checkEKUs && (len(c.ExtKeyUsage) == 0 && len(c.UnknownExtKeyUsage) == 0) { + checkEKUs = false + } + + // If the “any” key usage is permitted, then no more checks are needed. + if checkEKUs { + for _, caEKU := range c.ExtKeyUsage { + comparisonCount++ + if caEKU == ExtKeyUsageAny { + checkEKUs = false + break + } + } + } + + if checkEKUs { + NextEKU: + for _, eku := range leaf.ExtKeyUsage { + if comparisonCount > maxConstraintComparisons { + return CertificateInvalidError{c, TooManyConstraints, ""} + } + + for _, caEKU := range c.ExtKeyUsage { + comparisonCount++ + if ekuPermittedBy(eku, caEKU) { + continue NextEKU + } + } + + oid, _ := oidFromExtKeyUsage(eku) + return CertificateInvalidError{c, CANotAuthorizedForExtKeyUsage, fmt.Sprintf("EKU not permitted: %#v", oid)} + } + + NextUnknownEKU: + for _, eku := range leaf.UnknownExtKeyUsage { + if comparisonCount > maxConstraintComparisons { + return CertificateInvalidError{c, TooManyConstraints, ""} + } + + for _, caEKU := range c.UnknownExtKeyUsage { + comparisonCount++ + if caEKU.Equal(eku) { + continue NextUnknownEKU + } + } + + return CertificateInvalidError{c, CANotAuthorizedForExtKeyUsage, fmt.Sprintf("EKU not permitted: %#v", eku)} + } + } + + // KeyUsage status flags are ignored. From Engineering Security, Peter + // Gutmann: A European government CA marked its signing certificates as + // being valid for encryption only, but no-one noticed. Another + // European CA marked its signature keys as not being valid for + // signatures. A different CA marked its own trusted root certificate + // as being invalid for certificate signing. Another national CA + // distributed a certificate to be used to encrypt data for the + // country’s tax authority that was marked as only being usable for + // digital signatures but not for encryption. Yet another CA reversed + // the order of the bit flags in the keyUsage due to confusion over + // encoding endianness, essentially setting a random keyUsage in + // certificates that it issued. Another CA created a self-invalidating + // certificate by adding a certificate policy statement stipulating + // that the certificate had to be used strictly as specified in the + // keyUsage, and a keyUsage containing a flag indicating that the RSA + // encryption key could only be used for Diffie-Hellman key agreement. + + if certType == intermediateCertificate && (!c.BasicConstraintsValid || !c.IsCA) { + return CertificateInvalidError{c, NotAuthorizedToSign, ""} + } + + if c.BasicConstraintsValid && c.MaxPathLen >= 0 { + numIntermediates := len(currentChain) - 1 + if numIntermediates > c.MaxPathLen { + return CertificateInvalidError{c, TooManyIntermediates, ""} + } + } + + return nil +} + +// Verify attempts to verify c by building one or more chains from c to a +// certificate in opts.Roots, using certificates in opts.Intermediates if +// needed. If successful, it returns one or more chains where the first +// element of the chain is c and the last element is from opts.Roots. +// +// If opts.Roots is nil and system roots are unavailable the returned error +// will be of type SystemRootsError. +// +// Name constraints in the intermediates will be applied to all names claimed +// in the chain, not just opts.DNSName. Thus it is invalid for a leaf to claim +// example.com if an intermediate doesn't permit it, even if example.com is not +// the name being validated. Note that DirectoryName constraints are not +// supported. +// +// Extended Key Usage values are enforced down a chain, so an intermediate or +// root that enumerates EKUs prevents a leaf from asserting an EKU not in that +// list. +// +// WARNING: this function doesn't do any revocation checking. +func (c *Certificate) Verify(opts VerifyOptions) (chains [][]*Certificate, err error) { + // Platform-specific verification needs the ASN.1 contents so + // this makes the behavior consistent across platforms. + if len(c.Raw) == 0 { + return nil, errNotParsed + } + if opts.Intermediates != nil { + for _, intermediate := range opts.Intermediates.certs { + if len(intermediate.Raw) == 0 { + return nil, errNotParsed + } + } + } + + // Use Windows's own verification and chain building. + if opts.Roots == nil && runtime.GOOS == "windows" { + return c.systemVerify(&opts) + } + + if opts.Roots == nil { + opts.Roots = systemRootsPool() + if opts.Roots == nil { + return nil, SystemRootsError{systemRootsErr} + } + } + + err = c.isValid(leafCertificate, nil, &opts) + if err != nil { + return + } + + if len(opts.DNSName) > 0 { + err = c.VerifyHostname(opts.DNSName) + if err != nil { + return + } + } + + requestedKeyUsages := make([]ExtKeyUsage, len(opts.KeyUsages)) + copy(requestedKeyUsages, opts.KeyUsages) + if len(requestedKeyUsages) == 0 { + requestedKeyUsages = append(requestedKeyUsages, ExtKeyUsageServerAuth) + } + + // If no key usages are specified, then any are acceptable. + checkEKU := len(c.ExtKeyUsage) > 0 + + for _, eku := range requestedKeyUsages { + if eku == ExtKeyUsageAny { + checkEKU = false + break + } + } + + if checkEKU { + NextUsage: + for _, eku := range requestedKeyUsages { + for _, leafEKU := range c.ExtKeyUsage { + if ekuPermittedBy(eku, leafEKU) { + continue NextUsage + } + } + + oid, _ := oidFromExtKeyUsage(eku) + return nil, CertificateInvalidError{c, IncompatibleUsage, fmt.Sprintf("%#v", oid)} + } + } + + var candidateChains [][]*Certificate + if opts.Roots.contains(c) { + candidateChains = append(candidateChains, []*Certificate{c}) + } else { + if candidateChains, err = c.buildChains(make(map[int][][]*Certificate), []*Certificate{c}, &opts); err != nil { + return nil, err + } + } + + return candidateChains, nil +} + +func appendToFreshChain(chain []*Certificate, cert *Certificate) []*Certificate { + n := make([]*Certificate, len(chain)+1) + copy(n, chain) + n[len(chain)] = cert + return n +} + +func (c *Certificate) buildChains(cache map[int][][]*Certificate, currentChain []*Certificate, opts *VerifyOptions) (chains [][]*Certificate, err error) { + possibleRoots, failedRoot, rootErr := opts.Roots.findVerifiedParents(c) +nextRoot: + for _, rootNum := range possibleRoots { + root := opts.Roots.certs[rootNum] + + for _, cert := range currentChain { + if cert.Equal(root) { + continue nextRoot + } + } + + err = root.isValid(rootCertificate, currentChain, opts) + if err != nil { + continue + } + chains = append(chains, appendToFreshChain(currentChain, root)) + } + + possibleIntermediates, failedIntermediate, intermediateErr := opts.Intermediates.findVerifiedParents(c) +nextIntermediate: + for _, intermediateNum := range possibleIntermediates { + intermediate := opts.Intermediates.certs[intermediateNum] + for _, cert := range currentChain { + if cert.Equal(intermediate) { + continue nextIntermediate + } + } + err = intermediate.isValid(intermediateCertificate, currentChain, opts) + if err != nil { + continue + } + var childChains [][]*Certificate + childChains, ok := cache[intermediateNum] + if !ok { + childChains, err = intermediate.buildChains(cache, appendToFreshChain(currentChain, intermediate), opts) + cache[intermediateNum] = childChains + } + chains = append(chains, childChains...) + } + + if len(chains) > 0 { + err = nil + } + + if len(chains) == 0 && err == nil { + hintErr := rootErr + hintCert := failedRoot + if hintErr == nil { + hintErr = intermediateErr + hintCert = failedIntermediate + } + err = UnknownAuthorityError{c, hintErr, hintCert} + } + + return +} + +func matchHostnames(pattern, host string) bool { + host = strings.TrimSuffix(host, ".") + pattern = strings.TrimSuffix(pattern, ".") + + if len(pattern) == 0 || len(host) == 0 { + return false + } + + patternParts := strings.Split(pattern, ".") + hostParts := strings.Split(host, ".") + + if len(patternParts) != len(hostParts) { + return false + } + + for i, patternPart := range patternParts { + if i == 0 && patternPart == "*" { + continue + } + if patternPart != hostParts[i] { + return false + } + } + + return true +} + +// toLowerCaseASCII returns a lower-case version of in. See RFC 6125 6.4.1. We use +// an explicitly ASCII function to avoid any sharp corners resulting from +// performing Unicode operations on DNS labels. +func toLowerCaseASCII(in string) string { + // If the string is already lower-case then there's nothing to do. + isAlreadyLowerCase := true + for _, c := range in { + if c == utf8.RuneError { + // If we get a UTF-8 error then there might be + // upper-case ASCII bytes in the invalid sequence. + isAlreadyLowerCase = false + break + } + if 'A' <= c && c <= 'Z' { + isAlreadyLowerCase = false + break + } + } + + if isAlreadyLowerCase { + return in + } + + out := []byte(in) + for i, c := range out { + if 'A' <= c && c <= 'Z' { + out[i] += 'a' - 'A' + } + } + return string(out) +} + +// VerifyHostname returns nil if c is a valid certificate for the named host. +// Otherwise it returns an error describing the mismatch. +func (c *Certificate) VerifyHostname(h string) error { + // IP addresses may be written in [ ]. + candidateIP := h + if len(h) >= 3 && h[0] == '[' && h[len(h)-1] == ']' { + candidateIP = h[1 : len(h)-1] + } + if ip := net.ParseIP(candidateIP); ip != nil { + // We only match IP addresses against IP SANs. + // https://tools.ietf.org/html/rfc6125#appendix-B.2 + for _, candidate := range c.IPAddresses { + if ip.Equal(candidate) { + return nil + } + } + return HostnameError{c, candidateIP} + } + + lowered := toLowerCaseASCII(h) + + if c.hasSANExtension() { + for _, match := range c.DNSNames { + if matchHostnames(toLowerCaseASCII(match), lowered) { + return nil + } + } + // If Subject Alt Name is given, we ignore the common name. + } else if matchHostnames(toLowerCaseASCII(c.Subject.CommonName), lowered) { + return nil + } + + return HostnameError{c, h} +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/x509.go b/vendor/github.com/google/certificate-transparency-go/x509/x509.go new file mode 100644 index 00000000000..33d1ed684e2 --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/x509.go @@ -0,0 +1,2841 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package x509 parses X.509-encoded keys and certificates. +// +// On UNIX systems the environment variables SSL_CERT_FILE and SSL_CERT_DIR +// can be used to override the system default locations for the SSL certificate +// file and SSL certificate files directory, respectively. +// +// This is a fork of the go library crypto/x509 package, it's more relaxed +// about certificates that it'll accept, and exports the TBSCertificate +// structure. +package x509 + +import ( + "bytes" + "crypto" + "crypto/dsa" + "crypto/ecdsa" + "crypto/elliptic" + "crypto/rsa" + _ "crypto/sha1" + _ "crypto/sha256" + _ "crypto/sha512" + "encoding/pem" + "errors" + "fmt" + "io" + "math/big" + "net" + "net/url" + "strconv" + "strings" + "time" + "unicode/utf8" + + cryptobyte_asn1 "golang.org/x/crypto/cryptobyte/asn1" + + "github.com/google/certificate-transparency-go/asn1" + "github.com/google/certificate-transparency-go/tls" + "github.com/google/certificate-transparency-go/x509/pkix" + "golang.org/x/crypto/cryptobyte" +) + +// pkixPublicKey reflects a PKIX public key structure. See SubjectPublicKeyInfo +// in RFC 3280. +type pkixPublicKey struct { + Algo pkix.AlgorithmIdentifier + BitString asn1.BitString +} + +// ParsePKIXPublicKey parses a DER encoded public key. These values are +// typically found in PEM blocks with "BEGIN PUBLIC KEY". +// +// Supported key types include RSA, DSA, and ECDSA. Unknown key +// types result in an error. +// +// On success, pub will be of type *rsa.PublicKey, *dsa.PublicKey, +// or *ecdsa.PublicKey. +func ParsePKIXPublicKey(derBytes []byte) (pub interface{}, err error) { + var pki publicKeyInfo + if rest, err := asn1.Unmarshal(derBytes, &pki); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after ASN.1 of public-key") + } + algo := getPublicKeyAlgorithmFromOID(pki.Algorithm.Algorithm) + if algo == UnknownPublicKeyAlgorithm { + return nil, errors.New("x509: unknown public key algorithm") + } + return parsePublicKey(algo, &pki) +} + +func marshalPublicKey(pub interface{}) (publicKeyBytes []byte, publicKeyAlgorithm pkix.AlgorithmIdentifier, err error) { + switch pub := pub.(type) { + case *rsa.PublicKey: + publicKeyBytes, err = asn1.Marshal(pkcs1PublicKey{ + N: pub.N, + E: pub.E, + }) + if err != nil { + return nil, pkix.AlgorithmIdentifier{}, err + } + publicKeyAlgorithm.Algorithm = OIDPublicKeyRSA + // This is a NULL parameters value which is required by + // https://tools.ietf.org/html/rfc3279#section-2.3.1. + publicKeyAlgorithm.Parameters = asn1.NullRawValue + case *ecdsa.PublicKey: + publicKeyBytes = elliptic.Marshal(pub.Curve, pub.X, pub.Y) + oid, ok := OIDFromNamedCurve(pub.Curve) + if !ok { + return nil, pkix.AlgorithmIdentifier{}, errors.New("x509: unsupported elliptic curve") + } + publicKeyAlgorithm.Algorithm = OIDPublicKeyECDSA + var paramBytes []byte + paramBytes, err = asn1.Marshal(oid) + if err != nil { + return + } + publicKeyAlgorithm.Parameters.FullBytes = paramBytes + default: + return nil, pkix.AlgorithmIdentifier{}, errors.New("x509: only RSA and ECDSA public keys supported") + } + + return publicKeyBytes, publicKeyAlgorithm, nil +} + +// MarshalPKIXPublicKey serialises a public key to DER-encoded PKIX format. +func MarshalPKIXPublicKey(pub interface{}) ([]byte, error) { + var publicKeyBytes []byte + var publicKeyAlgorithm pkix.AlgorithmIdentifier + var err error + + if publicKeyBytes, publicKeyAlgorithm, err = marshalPublicKey(pub); err != nil { + return nil, err + } + + pkix := pkixPublicKey{ + Algo: publicKeyAlgorithm, + BitString: asn1.BitString{ + Bytes: publicKeyBytes, + BitLength: 8 * len(publicKeyBytes), + }, + } + + ret, _ := asn1.Marshal(pkix) + return ret, nil +} + +// These structures reflect the ASN.1 structure of X.509 certificates.: + +type certificate struct { + Raw asn1.RawContent + TBSCertificate tbsCertificate + SignatureAlgorithm pkix.AlgorithmIdentifier + SignatureValue asn1.BitString +} + +type tbsCertificate struct { + Raw asn1.RawContent + Version int `asn1:"optional,explicit,default:0,tag:0"` + SerialNumber *big.Int + SignatureAlgorithm pkix.AlgorithmIdentifier + Issuer asn1.RawValue + Validity validity + Subject asn1.RawValue + PublicKey publicKeyInfo + UniqueId asn1.BitString `asn1:"optional,tag:1"` + SubjectUniqueId asn1.BitString `asn1:"optional,tag:2"` + Extensions []pkix.Extension `asn1:"optional,explicit,tag:3"` +} + +type dsaAlgorithmParameters struct { + P, Q, G *big.Int +} + +type dsaSignature struct { + R, S *big.Int +} + +type ecdsaSignature dsaSignature + +type validity struct { + NotBefore, NotAfter time.Time +} + +type publicKeyInfo struct { + Raw asn1.RawContent + Algorithm pkix.AlgorithmIdentifier + PublicKey asn1.BitString +} + +// RFC 5280, 4.2.1.1 +type authKeyId struct { + Id []byte `asn1:"optional,tag:0"` +} + +// SignatureAlgorithm indicates the algorithm used to sign a certificate. +type SignatureAlgorithm int + +// SignatureAlgorithm values: +const ( + UnknownSignatureAlgorithm SignatureAlgorithm = iota + MD2WithRSA + MD5WithRSA + SHA1WithRSA + SHA256WithRSA + SHA384WithRSA + SHA512WithRSA + DSAWithSHA1 + DSAWithSHA256 + ECDSAWithSHA1 + ECDSAWithSHA256 + ECDSAWithSHA384 + ECDSAWithSHA512 + SHA256WithRSAPSS + SHA384WithRSAPSS + SHA512WithRSAPSS +) + +func (algo SignatureAlgorithm) isRSAPSS() bool { + switch algo { + case SHA256WithRSAPSS, SHA384WithRSAPSS, SHA512WithRSAPSS: + return true + default: + return false + } +} + +func (algo SignatureAlgorithm) String() string { + for _, details := range signatureAlgorithmDetails { + if details.algo == algo { + return details.name + } + } + return strconv.Itoa(int(algo)) +} + +// PublicKeyAlgorithm indicates the algorithm used for a certificate's public key. +type PublicKeyAlgorithm int + +// PublicKeyAlgorithm values: +const ( + UnknownPublicKeyAlgorithm PublicKeyAlgorithm = iota + RSA + DSA + ECDSA +) + +var publicKeyAlgoName = [...]string{ + RSA: "RSA", + DSA: "DSA", + ECDSA: "ECDSA", +} + +func (algo PublicKeyAlgorithm) String() string { + if 0 < algo && int(algo) < len(publicKeyAlgoName) { + return publicKeyAlgoName[algo] + } + return strconv.Itoa(int(algo)) +} + +// OIDs for signature algorithms +// +// pkcs-1 OBJECT IDENTIFIER ::= { +// iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) 1 } +// +// +// RFC 3279 2.2.1 RSA Signature Algorithms +// +// md2WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 2 } +// +// md5WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 4 } +// +// sha-1WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 5 } +// +// dsaWithSha1 OBJECT IDENTIFIER ::= { +// iso(1) member-body(2) us(840) x9-57(10040) x9cm(4) 3 } +// +// RFC 3279 2.2.3 ECDSA Signature Algorithm +// +// ecdsa-with-SHA1 OBJECT IDENTIFIER ::= { +// iso(1) member-body(2) us(840) ansi-x962(10045) +// signatures(4) ecdsa-with-SHA1(1)} +// +// +// RFC 4055 5 PKCS #1 Version 1.5 +// +// sha256WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 11 } +// +// sha384WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 12 } +// +// sha512WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 13 } +// +// +// RFC 5758 3.1 DSA Signature Algorithms +// +// dsaWithSha256 OBJECT IDENTIFIER ::= { +// joint-iso-ccitt(2) country(16) us(840) organization(1) gov(101) +// csor(3) algorithms(4) id-dsa-with-sha2(3) 2} +// +// RFC 5758 3.2 ECDSA Signature Algorithm +// +// ecdsa-with-SHA256 OBJECT IDENTIFIER ::= { iso(1) member-body(2) +// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 2 } +// +// ecdsa-with-SHA384 OBJECT IDENTIFIER ::= { iso(1) member-body(2) +// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 3 } +// +// ecdsa-with-SHA512 OBJECT IDENTIFIER ::= { iso(1) member-body(2) +// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 4 } + +var ( + oidSignatureMD2WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 2} + oidSignatureMD5WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 4} + oidSignatureSHA1WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 5} + oidSignatureSHA256WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 11} + oidSignatureSHA384WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 12} + oidSignatureSHA512WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 13} + oidSignatureRSAPSS = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 10} + oidSignatureDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 3} + oidSignatureDSAWithSHA256 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 3, 2} + oidSignatureECDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 1} + oidSignatureECDSAWithSHA256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 2} + oidSignatureECDSAWithSHA384 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 3} + oidSignatureECDSAWithSHA512 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 4} + + oidSHA256 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 1} + oidSHA384 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 2} + oidSHA512 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 3} + + oidMGF1 = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 8} + + // oidISOSignatureSHA1WithRSA means the same as oidSignatureSHA1WithRSA + // but it's specified by ISO. Microsoft's makecert.exe has been known + // to produce certificates with this OID. + oidISOSignatureSHA1WithRSA = asn1.ObjectIdentifier{1, 3, 14, 3, 2, 29} +) + +var signatureAlgorithmDetails = []struct { + algo SignatureAlgorithm + name string + oid asn1.ObjectIdentifier + pubKeyAlgo PublicKeyAlgorithm + hash crypto.Hash +}{ + {MD2WithRSA, "MD2-RSA", oidSignatureMD2WithRSA, RSA, crypto.Hash(0) /* no value for MD2 */}, + {MD5WithRSA, "MD5-RSA", oidSignatureMD5WithRSA, RSA, crypto.MD5}, + {SHA1WithRSA, "SHA1-RSA", oidSignatureSHA1WithRSA, RSA, crypto.SHA1}, + {SHA1WithRSA, "SHA1-RSA", oidISOSignatureSHA1WithRSA, RSA, crypto.SHA1}, + {SHA256WithRSA, "SHA256-RSA", oidSignatureSHA256WithRSA, RSA, crypto.SHA256}, + {SHA384WithRSA, "SHA384-RSA", oidSignatureSHA384WithRSA, RSA, crypto.SHA384}, + {SHA512WithRSA, "SHA512-RSA", oidSignatureSHA512WithRSA, RSA, crypto.SHA512}, + {SHA256WithRSAPSS, "SHA256-RSAPSS", oidSignatureRSAPSS, RSA, crypto.SHA256}, + {SHA384WithRSAPSS, "SHA384-RSAPSS", oidSignatureRSAPSS, RSA, crypto.SHA384}, + {SHA512WithRSAPSS, "SHA512-RSAPSS", oidSignatureRSAPSS, RSA, crypto.SHA512}, + {DSAWithSHA1, "DSA-SHA1", oidSignatureDSAWithSHA1, DSA, crypto.SHA1}, + {DSAWithSHA256, "DSA-SHA256", oidSignatureDSAWithSHA256, DSA, crypto.SHA256}, + {ECDSAWithSHA1, "ECDSA-SHA1", oidSignatureECDSAWithSHA1, ECDSA, crypto.SHA1}, + {ECDSAWithSHA256, "ECDSA-SHA256", oidSignatureECDSAWithSHA256, ECDSA, crypto.SHA256}, + {ECDSAWithSHA384, "ECDSA-SHA384", oidSignatureECDSAWithSHA384, ECDSA, crypto.SHA384}, + {ECDSAWithSHA512, "ECDSA-SHA512", oidSignatureECDSAWithSHA512, ECDSA, crypto.SHA512}, +} + +// pssParameters reflects the parameters in an AlgorithmIdentifier that +// specifies RSA PSS. See https://tools.ietf.org/html/rfc3447#appendix-A.2.3 +type pssParameters struct { + // The following three fields are not marked as + // optional because the default values specify SHA-1, + // which is no longer suitable for use in signatures. + Hash pkix.AlgorithmIdentifier `asn1:"explicit,tag:0"` + MGF pkix.AlgorithmIdentifier `asn1:"explicit,tag:1"` + SaltLength int `asn1:"explicit,tag:2"` + TrailerField int `asn1:"optional,explicit,tag:3,default:1"` +} + +// rsaPSSParameters returns an asn1.RawValue suitable for use as the Parameters +// in an AlgorithmIdentifier that specifies RSA PSS. +func rsaPSSParameters(hashFunc crypto.Hash) asn1.RawValue { + var hashOID asn1.ObjectIdentifier + + switch hashFunc { + case crypto.SHA256: + hashOID = oidSHA256 + case crypto.SHA384: + hashOID = oidSHA384 + case crypto.SHA512: + hashOID = oidSHA512 + } + + params := pssParameters{ + Hash: pkix.AlgorithmIdentifier{ + Algorithm: hashOID, + Parameters: asn1.NullRawValue, + }, + MGF: pkix.AlgorithmIdentifier{ + Algorithm: oidMGF1, + }, + SaltLength: hashFunc.Size(), + TrailerField: 1, + } + + mgf1Params := pkix.AlgorithmIdentifier{ + Algorithm: hashOID, + Parameters: asn1.NullRawValue, + } + + var err error + params.MGF.Parameters.FullBytes, err = asn1.Marshal(mgf1Params) + if err != nil { + panic(err) + } + + serialized, err := asn1.Marshal(params) + if err != nil { + panic(err) + } + + return asn1.RawValue{FullBytes: serialized} +} + +// SignatureAlgorithmFromAI converts an PKIX algorithm identifier to the +// equivalent local constant. +func SignatureAlgorithmFromAI(ai pkix.AlgorithmIdentifier) SignatureAlgorithm { + if !ai.Algorithm.Equal(oidSignatureRSAPSS) { + for _, details := range signatureAlgorithmDetails { + if ai.Algorithm.Equal(details.oid) { + return details.algo + } + } + return UnknownSignatureAlgorithm + } + + // RSA PSS is special because it encodes important parameters + // in the Parameters. + + var params pssParameters + if _, err := asn1.Unmarshal(ai.Parameters.FullBytes, ¶ms); err != nil { + return UnknownSignatureAlgorithm + } + + var mgf1HashFunc pkix.AlgorithmIdentifier + if _, err := asn1.Unmarshal(params.MGF.Parameters.FullBytes, &mgf1HashFunc); err != nil { + return UnknownSignatureAlgorithm + } + + // PSS is greatly overburdened with options. This code forces + // them into three buckets by requiring that the MGF1 hash + // function always match the message hash function (as + // recommended in + // https://tools.ietf.org/html/rfc3447#section-8.1), that the + // salt length matches the hash length, and that the trailer + // field has the default value. + if !bytes.Equal(params.Hash.Parameters.FullBytes, asn1.NullBytes) || + !params.MGF.Algorithm.Equal(oidMGF1) || + !mgf1HashFunc.Algorithm.Equal(params.Hash.Algorithm) || + !bytes.Equal(mgf1HashFunc.Parameters.FullBytes, asn1.NullBytes) || + params.TrailerField != 1 { + return UnknownSignatureAlgorithm + } + + switch { + case params.Hash.Algorithm.Equal(oidSHA256) && params.SaltLength == 32: + return SHA256WithRSAPSS + case params.Hash.Algorithm.Equal(oidSHA384) && params.SaltLength == 48: + return SHA384WithRSAPSS + case params.Hash.Algorithm.Equal(oidSHA512) && params.SaltLength == 64: + return SHA512WithRSAPSS + } + + return UnknownSignatureAlgorithm +} + +// RFC 3279, 2.3 Public Key Algorithms +// +// pkcs-1 OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840) +// rsadsi(113549) pkcs(1) 1 } +// +// rsaEncryption OBJECT IDENTIFIER ::== { pkcs1-1 1 } +// +// id-dsa OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840) +// x9-57(10040) x9cm(4) 1 } +// +// RFC 5480, 2.1.1 Unrestricted Algorithm Identifier and Parameters +// +// id-ecPublicKey OBJECT IDENTIFIER ::= { +// iso(1) member-body(2) us(840) ansi-X9-62(10045) keyType(2) 1 } +var ( + OIDPublicKeyRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 1} + OIDPublicKeyDSA = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 1} + OIDPublicKeyECDSA = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1} + OIDPublicKeyRSAObsolete = asn1.ObjectIdentifier{2, 5, 8, 1, 1} +) + +func getPublicKeyAlgorithmFromOID(oid asn1.ObjectIdentifier) PublicKeyAlgorithm { + switch { + case oid.Equal(OIDPublicKeyRSA): + return RSA + case oid.Equal(OIDPublicKeyDSA): + return DSA + case oid.Equal(OIDPublicKeyECDSA): + return ECDSA + } + return UnknownPublicKeyAlgorithm +} + +// RFC 5480, 2.1.1.1. Named Curve +// +// secp224r1 OBJECT IDENTIFIER ::= { +// iso(1) identified-organization(3) certicom(132) curve(0) 33 } +// +// secp256r1 OBJECT IDENTIFIER ::= { +// iso(1) member-body(2) us(840) ansi-X9-62(10045) curves(3) +// prime(1) 7 } +// +// secp384r1 OBJECT IDENTIFIER ::= { +// iso(1) identified-organization(3) certicom(132) curve(0) 34 } +// +// secp521r1 OBJECT IDENTIFIER ::= { +// iso(1) identified-organization(3) certicom(132) curve(0) 35 } +// +// NB: secp256r1 is equivalent to prime256v1 +var ( + OIDNamedCurveP224 = asn1.ObjectIdentifier{1, 3, 132, 0, 33} + OIDNamedCurveP256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 3, 1, 7} + OIDNamedCurveP384 = asn1.ObjectIdentifier{1, 3, 132, 0, 34} + OIDNamedCurveP521 = asn1.ObjectIdentifier{1, 3, 132, 0, 35} +) + +func namedCurveFromOID(oid asn1.ObjectIdentifier) elliptic.Curve { + switch { + case oid.Equal(OIDNamedCurveP224): + return elliptic.P224() + case oid.Equal(OIDNamedCurveP256): + return elliptic.P256() + case oid.Equal(OIDNamedCurveP384): + return elliptic.P384() + case oid.Equal(OIDNamedCurveP521): + return elliptic.P521() + } + return nil +} + +// OIDFromNamedCurve returns the OID used to specify the use of the given +// elliptic curve. +func OIDFromNamedCurve(curve elliptic.Curve) (asn1.ObjectIdentifier, bool) { + switch curve { + case elliptic.P224(): + return OIDNamedCurveP224, true + case elliptic.P256(): + return OIDNamedCurveP256, true + case elliptic.P384(): + return OIDNamedCurveP384, true + case elliptic.P521(): + return OIDNamedCurveP521, true + } + + return nil, false +} + +// KeyUsage represents the set of actions that are valid for a given key. It's +// a bitmap of the KeyUsage* constants. +type KeyUsage int + +// KeyUsage values: +const ( + KeyUsageDigitalSignature KeyUsage = 1 << iota + KeyUsageContentCommitment + KeyUsageKeyEncipherment + KeyUsageDataEncipherment + KeyUsageKeyAgreement + KeyUsageCertSign + KeyUsageCRLSign + KeyUsageEncipherOnly + KeyUsageDecipherOnly +) + +// RFC 5280, 4.2.1.12 Extended Key Usage +// +// anyExtendedKeyUsage OBJECT IDENTIFIER ::= { id-ce-extKeyUsage 0 } +// +// id-kp OBJECT IDENTIFIER ::= { id-pkix 3 } +// +// id-kp-serverAuth OBJECT IDENTIFIER ::= { id-kp 1 } +// id-kp-clientAuth OBJECT IDENTIFIER ::= { id-kp 2 } +// id-kp-codeSigning OBJECT IDENTIFIER ::= { id-kp 3 } +// id-kp-emailProtection OBJECT IDENTIFIER ::= { id-kp 4 } +// id-kp-timeStamping OBJECT IDENTIFIER ::= { id-kp 8 } +// id-kp-OCSPSigning OBJECT IDENTIFIER ::= { id-kp 9 } +var ( + oidExtKeyUsageAny = asn1.ObjectIdentifier{2, 5, 29, 37, 0} + oidExtKeyUsageServerAuth = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 1} + oidExtKeyUsageClientAuth = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 2} + oidExtKeyUsageCodeSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 3} + oidExtKeyUsageEmailProtection = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 4} + oidExtKeyUsageIPSECEndSystem = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 5} + oidExtKeyUsageIPSECTunnel = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 6} + oidExtKeyUsageIPSECUser = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 7} + oidExtKeyUsageTimeStamping = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 8} + oidExtKeyUsageOCSPSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 9} + oidExtKeyUsageMicrosoftServerGatedCrypto = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 311, 10, 3, 3} + oidExtKeyUsageNetscapeServerGatedCrypto = asn1.ObjectIdentifier{2, 16, 840, 1, 113730, 4, 1} + oidExtKeyUsageMicrosoftCommercialCodeSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 311, 2, 1, 22} + oidExtKeyUsageMicrosoftKernelCodeSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 311, 61, 1, 1} + // RFC 6962 s3.1 + oidExtKeyUsageCertificateTransparency = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 11129, 2, 4, 4} +) + +// ExtKeyUsage represents an extended set of actions that are valid for a given key. +// Each of the ExtKeyUsage* constants define a unique action. +type ExtKeyUsage int + +// ExtKeyUsage values: +const ( + ExtKeyUsageAny ExtKeyUsage = iota + ExtKeyUsageServerAuth + ExtKeyUsageClientAuth + ExtKeyUsageCodeSigning + ExtKeyUsageEmailProtection + ExtKeyUsageIPSECEndSystem + ExtKeyUsageIPSECTunnel + ExtKeyUsageIPSECUser + ExtKeyUsageTimeStamping + ExtKeyUsageOCSPSigning + ExtKeyUsageMicrosoftServerGatedCrypto + ExtKeyUsageNetscapeServerGatedCrypto + ExtKeyUsageMicrosoftCommercialCodeSigning + ExtKeyUsageMicrosoftKernelCodeSigning + ExtKeyUsageCertificateTransparency +) + +// extKeyUsageOIDs contains the mapping between an ExtKeyUsage and its OID. +var extKeyUsageOIDs = []struct { + extKeyUsage ExtKeyUsage + oid asn1.ObjectIdentifier +}{ + {ExtKeyUsageAny, oidExtKeyUsageAny}, + {ExtKeyUsageServerAuth, oidExtKeyUsageServerAuth}, + {ExtKeyUsageClientAuth, oidExtKeyUsageClientAuth}, + {ExtKeyUsageCodeSigning, oidExtKeyUsageCodeSigning}, + {ExtKeyUsageEmailProtection, oidExtKeyUsageEmailProtection}, + {ExtKeyUsageIPSECEndSystem, oidExtKeyUsageIPSECEndSystem}, + {ExtKeyUsageIPSECTunnel, oidExtKeyUsageIPSECTunnel}, + {ExtKeyUsageIPSECUser, oidExtKeyUsageIPSECUser}, + {ExtKeyUsageTimeStamping, oidExtKeyUsageTimeStamping}, + {ExtKeyUsageOCSPSigning, oidExtKeyUsageOCSPSigning}, + {ExtKeyUsageMicrosoftServerGatedCrypto, oidExtKeyUsageMicrosoftServerGatedCrypto}, + {ExtKeyUsageNetscapeServerGatedCrypto, oidExtKeyUsageNetscapeServerGatedCrypto}, + {ExtKeyUsageMicrosoftCommercialCodeSigning, oidExtKeyUsageMicrosoftCommercialCodeSigning}, + {ExtKeyUsageMicrosoftKernelCodeSigning, oidExtKeyUsageMicrosoftKernelCodeSigning}, + {ExtKeyUsageCertificateTransparency, oidExtKeyUsageCertificateTransparency}, +} + +func extKeyUsageFromOID(oid asn1.ObjectIdentifier) (eku ExtKeyUsage, ok bool) { + for _, pair := range extKeyUsageOIDs { + if oid.Equal(pair.oid) { + return pair.extKeyUsage, true + } + } + return +} + +func oidFromExtKeyUsage(eku ExtKeyUsage) (oid asn1.ObjectIdentifier, ok bool) { + for _, pair := range extKeyUsageOIDs { + if eku == pair.extKeyUsage { + return pair.oid, true + } + } + return +} + +// SerializedSCT represents a single TLS-encoded signed certificate timestamp, from RFC6962 s3.3. +type SerializedSCT struct { + Val []byte `tls:"minlen:1,maxlen:65535"` +} + +// SignedCertificateTimestampList is a list of signed certificate timestamps, from RFC6962 s3.3. +type SignedCertificateTimestampList struct { + SCTList []SerializedSCT `tls:"minlen:1,maxlen:65335"` +} + +// A Certificate represents an X.509 certificate. +type Certificate struct { + Raw []byte // Complete ASN.1 DER content (certificate, signature algorithm and signature). + RawTBSCertificate []byte // Certificate part of raw ASN.1 DER content. + RawSubjectPublicKeyInfo []byte // DER encoded SubjectPublicKeyInfo. + RawSubject []byte // DER encoded Subject + RawIssuer []byte // DER encoded Issuer + + Signature []byte + SignatureAlgorithm SignatureAlgorithm + + PublicKeyAlgorithm PublicKeyAlgorithm + PublicKey interface{} + + Version int + SerialNumber *big.Int + Issuer pkix.Name + Subject pkix.Name + NotBefore, NotAfter time.Time // Validity bounds. + KeyUsage KeyUsage + + // Extensions contains raw X.509 extensions. When parsing certificates, + // this can be used to extract non-critical extensions that are not + // parsed by this package. When marshaling certificates, the Extensions + // field is ignored, see ExtraExtensions. + Extensions []pkix.Extension + + // ExtraExtensions contains extensions to be copied, raw, into any + // marshaled certificates. Values override any extensions that would + // otherwise be produced based on the other fields. The ExtraExtensions + // field is not populated when parsing certificates, see Extensions. + ExtraExtensions []pkix.Extension + + // UnhandledCriticalExtensions contains a list of extension IDs that + // were not (fully) processed when parsing. Verify will fail if this + // slice is non-empty, unless verification is delegated to an OS + // library which understands all the critical extensions. + // + // Users can access these extensions using Extensions and can remove + // elements from this slice if they believe that they have been + // handled. + UnhandledCriticalExtensions []asn1.ObjectIdentifier + + ExtKeyUsage []ExtKeyUsage // Sequence of extended key usages. + UnknownExtKeyUsage []asn1.ObjectIdentifier // Encountered extended key usages unknown to this package. + + // BasicConstraintsValid indicates whether IsCA, MaxPathLen, + // and MaxPathLenZero are valid. + BasicConstraintsValid bool + IsCA bool + + // MaxPathLen and MaxPathLenZero indicate the presence and + // value of the BasicConstraints' "pathLenConstraint". + // + // When parsing a certificate, a positive non-zero MaxPathLen + // means that the field was specified, -1 means it was unset, + // and MaxPathLenZero being true mean that the field was + // explicitly set to zero. The case of MaxPathLen==0 with MaxPathLenZero==false + // should be treated equivalent to -1 (unset). + // + // When generating a certificate, an unset pathLenConstraint + // can be requested with either MaxPathLen == -1 or using the + // zero value for both MaxPathLen and MaxPathLenZero. + MaxPathLen int + // MaxPathLenZero indicates that BasicConstraintsValid==true + // and MaxPathLen==0 should be interpreted as an actual + // maximum path length of zero. Otherwise, that combination is + // interpreted as MaxPathLen not being set. + MaxPathLenZero bool + + SubjectKeyId []byte + AuthorityKeyId []byte + + // RFC 5280, 4.2.2.1 (Authority Information Access) + OCSPServer []string + IssuingCertificateURL []string + + // Subject Alternate Name values + DNSNames []string + EmailAddresses []string + IPAddresses []net.IP + URIs []*url.URL + + // Name constraints + PermittedDNSDomainsCritical bool // if true then the name constraints are marked critical. + PermittedDNSDomains []string + ExcludedDNSDomains []string + PermittedIPRanges []*net.IPNet + ExcludedIPRanges []*net.IPNet + PermittedEmailAddresses []string + ExcludedEmailAddresses []string + PermittedURIDomains []string + ExcludedURIDomains []string + + // CRL Distribution Points + CRLDistributionPoints []string + + PolicyIdentifiers []asn1.ObjectIdentifier + + // Certificate Transparency SCT extension contents; this is a TLS-encoded + // SignedCertificateTimestampList (RFC 6962 s3.3). + RawSCT []byte + SCTList SignedCertificateTimestampList +} + +// ErrUnsupportedAlgorithm results from attempting to perform an operation that +// involves algorithms that are not currently implemented. +var ErrUnsupportedAlgorithm = errors.New("x509: cannot verify signature: algorithm unimplemented") + +// InsecureAlgorithmError results when the signature algorithm for a certificate +// is known to be insecure. +type InsecureAlgorithmError SignatureAlgorithm + +func (e InsecureAlgorithmError) Error() string { + return fmt.Sprintf("x509: cannot verify signature: insecure algorithm %v", SignatureAlgorithm(e)) +} + +// ConstraintViolationError results when a requested usage is not permitted by +// a certificate. For example: checking a signature when the public key isn't a +// certificate signing key. +type ConstraintViolationError struct{} + +func (ConstraintViolationError) Error() string { + return "x509: invalid signature: parent certificate cannot sign this kind of certificate" +} + +// Equal indicates whether two Certificate objects are equal (by comparing their +// DER-encoded values). +func (c *Certificate) Equal(other *Certificate) bool { + return bytes.Equal(c.Raw, other.Raw) +} + +func (c *Certificate) hasSANExtension() bool { + return oidInExtensions(OIDExtensionSubjectAltName, c.Extensions) +} + +// Entrust have a broken root certificate (CN=Entrust.net Certification +// Authority (2048)) which isn't marked as a CA certificate and is thus invalid +// according to PKIX. +// We recognise this certificate by its SubjectPublicKeyInfo and exempt it +// from the Basic Constraints requirement. +// See http://www.entrust.net/knowledge-base/technote.cfm?tn=7869 +// +// TODO(agl): remove this hack once their reissued root is sufficiently +// widespread. +var entrustBrokenSPKI = []byte{ + 0x30, 0x82, 0x01, 0x22, 0x30, 0x0d, 0x06, 0x09, + 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, + 0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00, + 0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01, + 0x00, 0x97, 0xa3, 0x2d, 0x3c, 0x9e, 0xde, 0x05, + 0xda, 0x13, 0xc2, 0x11, 0x8d, 0x9d, 0x8e, 0xe3, + 0x7f, 0xc7, 0x4b, 0x7e, 0x5a, 0x9f, 0xb3, 0xff, + 0x62, 0xab, 0x73, 0xc8, 0x28, 0x6b, 0xba, 0x10, + 0x64, 0x82, 0x87, 0x13, 0xcd, 0x57, 0x18, 0xff, + 0x28, 0xce, 0xc0, 0xe6, 0x0e, 0x06, 0x91, 0x50, + 0x29, 0x83, 0xd1, 0xf2, 0xc3, 0x2a, 0xdb, 0xd8, + 0xdb, 0x4e, 0x04, 0xcc, 0x00, 0xeb, 0x8b, 0xb6, + 0x96, 0xdc, 0xbc, 0xaa, 0xfa, 0x52, 0x77, 0x04, + 0xc1, 0xdb, 0x19, 0xe4, 0xae, 0x9c, 0xfd, 0x3c, + 0x8b, 0x03, 0xef, 0x4d, 0xbc, 0x1a, 0x03, 0x65, + 0xf9, 0xc1, 0xb1, 0x3f, 0x72, 0x86, 0xf2, 0x38, + 0xaa, 0x19, 0xae, 0x10, 0x88, 0x78, 0x28, 0xda, + 0x75, 0xc3, 0x3d, 0x02, 0x82, 0x02, 0x9c, 0xb9, + 0xc1, 0x65, 0x77, 0x76, 0x24, 0x4c, 0x98, 0xf7, + 0x6d, 0x31, 0x38, 0xfb, 0xdb, 0xfe, 0xdb, 0x37, + 0x02, 0x76, 0xa1, 0x18, 0x97, 0xa6, 0xcc, 0xde, + 0x20, 0x09, 0x49, 0x36, 0x24, 0x69, 0x42, 0xf6, + 0xe4, 0x37, 0x62, 0xf1, 0x59, 0x6d, 0xa9, 0x3c, + 0xed, 0x34, 0x9c, 0xa3, 0x8e, 0xdb, 0xdc, 0x3a, + 0xd7, 0xf7, 0x0a, 0x6f, 0xef, 0x2e, 0xd8, 0xd5, + 0x93, 0x5a, 0x7a, 0xed, 0x08, 0x49, 0x68, 0xe2, + 0x41, 0xe3, 0x5a, 0x90, 0xc1, 0x86, 0x55, 0xfc, + 0x51, 0x43, 0x9d, 0xe0, 0xb2, 0xc4, 0x67, 0xb4, + 0xcb, 0x32, 0x31, 0x25, 0xf0, 0x54, 0x9f, 0x4b, + 0xd1, 0x6f, 0xdb, 0xd4, 0xdd, 0xfc, 0xaf, 0x5e, + 0x6c, 0x78, 0x90, 0x95, 0xde, 0xca, 0x3a, 0x48, + 0xb9, 0x79, 0x3c, 0x9b, 0x19, 0xd6, 0x75, 0x05, + 0xa0, 0xf9, 0x88, 0xd7, 0xc1, 0xe8, 0xa5, 0x09, + 0xe4, 0x1a, 0x15, 0xdc, 0x87, 0x23, 0xaa, 0xb2, + 0x75, 0x8c, 0x63, 0x25, 0x87, 0xd8, 0xf8, 0x3d, + 0xa6, 0xc2, 0xcc, 0x66, 0xff, 0xa5, 0x66, 0x68, + 0x55, 0x02, 0x03, 0x01, 0x00, 0x01, +} + +// CheckSignatureFrom verifies that the signature on c is a valid signature +// from parent. +func (c *Certificate) CheckSignatureFrom(parent *Certificate) error { + // RFC 5280, 4.2.1.9: + // "If the basic constraints extension is not present in a version 3 + // certificate, or the extension is present but the cA boolean is not + // asserted, then the certified public key MUST NOT be used to verify + // certificate signatures." + // (except for Entrust, see comment above entrustBrokenSPKI) + if (parent.Version == 3 && !parent.BasicConstraintsValid || + parent.BasicConstraintsValid && !parent.IsCA) && + !bytes.Equal(c.RawSubjectPublicKeyInfo, entrustBrokenSPKI) { + return ConstraintViolationError{} + } + + if parent.KeyUsage != 0 && parent.KeyUsage&KeyUsageCertSign == 0 { + return ConstraintViolationError{} + } + + if parent.PublicKeyAlgorithm == UnknownPublicKeyAlgorithm { + return ErrUnsupportedAlgorithm + } + + // TODO(agl): don't ignore the path length constraint. + + return parent.CheckSignature(c.SignatureAlgorithm, c.RawTBSCertificate, c.Signature) +} + +// CheckSignature verifies that signature is a valid signature over signed from +// c's public key. +func (c *Certificate) CheckSignature(algo SignatureAlgorithm, signed, signature []byte) error { + return checkSignature(algo, signed, signature, c.PublicKey) +} + +func (c *Certificate) hasNameConstraints() bool { + for _, e := range c.Extensions { + if len(e.Id) == 4 && e.Id[0] == OIDExtensionNameConstraints[0] && e.Id[1] == OIDExtensionNameConstraints[1] && e.Id[2] == OIDExtensionNameConstraints[2] && e.Id[3] == OIDExtensionNameConstraints[3] { + return true + } + } + + return false +} + +func (c *Certificate) getSANExtension() ([]byte, bool) { + for _, e := range c.Extensions { + if len(e.Id) == 4 && e.Id[0] == OIDExtensionSubjectAltName[0] && e.Id[1] == OIDExtensionSubjectAltName[1] && e.Id[2] == OIDExtensionSubjectAltName[2] && e.Id[3] == OIDExtensionSubjectAltName[3] { + return e.Value, true + } + } + + return nil, false +} + +func signaturePublicKeyAlgoMismatchError(expectedPubKeyAlgo PublicKeyAlgorithm, pubKey interface{}) error { + return fmt.Errorf("x509: signature algorithm specifies an %s public key, but have public key of type %T", expectedPubKeyAlgo.String(), pubKey) +} + +// CheckSignature verifies that signature is a valid signature over signed from +// a crypto.PublicKey. +func checkSignature(algo SignatureAlgorithm, signed, signature []byte, publicKey crypto.PublicKey) (err error) { + var hashType crypto.Hash + var pubKeyAlgo PublicKeyAlgorithm + + for _, details := range signatureAlgorithmDetails { + if details.algo == algo { + hashType = details.hash + pubKeyAlgo = details.pubKeyAlgo + } + } + + switch hashType { + case crypto.Hash(0): + return ErrUnsupportedAlgorithm + case crypto.MD5: + return InsecureAlgorithmError(algo) + } + + if !hashType.Available() { + return ErrUnsupportedAlgorithm + } + h := hashType.New() + + h.Write(signed) + digest := h.Sum(nil) + + switch pub := publicKey.(type) { + case *rsa.PublicKey: + if pubKeyAlgo != RSA { + return signaturePublicKeyAlgoMismatchError(pubKeyAlgo, pub) + } + if algo.isRSAPSS() { + return rsa.VerifyPSS(pub, hashType, digest, signature, &rsa.PSSOptions{SaltLength: rsa.PSSSaltLengthEqualsHash}) + } else { + return rsa.VerifyPKCS1v15(pub, hashType, digest, signature) + } + case *dsa.PublicKey: + if pubKeyAlgo != DSA { + return signaturePublicKeyAlgoMismatchError(pubKeyAlgo, pub) + } + dsaSig := new(dsaSignature) + if rest, err := asn1.Unmarshal(signature, dsaSig); err != nil { + return err + } else if len(rest) != 0 { + return errors.New("x509: trailing data after DSA signature") + } + if dsaSig.R.Sign() <= 0 || dsaSig.S.Sign() <= 0 { + return errors.New("x509: DSA signature contained zero or negative values") + } + if !dsa.Verify(pub, digest, dsaSig.R, dsaSig.S) { + return errors.New("x509: DSA verification failure") + } + return + case *ecdsa.PublicKey: + if pubKeyAlgo != ECDSA { + return signaturePublicKeyAlgoMismatchError(pubKeyAlgo, pub) + } + ecdsaSig := new(ecdsaSignature) + if rest, err := asn1.Unmarshal(signature, ecdsaSig); err != nil { + return err + } else if len(rest) != 0 { + return errors.New("x509: trailing data after ECDSA signature") + } + if ecdsaSig.R.Sign() <= 0 || ecdsaSig.S.Sign() <= 0 { + return errors.New("x509: ECDSA signature contained zero or negative values") + } + if !ecdsa.Verify(pub, digest, ecdsaSig.R, ecdsaSig.S) { + return errors.New("x509: ECDSA verification failure") + } + return + } + return ErrUnsupportedAlgorithm +} + +// CheckCRLSignature checks that the signature in crl is from c. +func (c *Certificate) CheckCRLSignature(crl *pkix.CertificateList) error { + algo := SignatureAlgorithmFromAI(crl.SignatureAlgorithm) + return c.CheckSignature(algo, crl.TBSCertList.Raw, crl.SignatureValue.RightAlign()) +} + +// UnhandledCriticalExtension results when the certificate contains an extension +// that is marked as critical but which is not handled by this library. +type UnhandledCriticalExtension struct { + ID asn1.ObjectIdentifier +} + +func (h UnhandledCriticalExtension) Error() string { + return fmt.Sprintf("x509: unhandled critical extension (%v)", h.ID) +} + +// RemoveCTPoison takes a DER-encoded TBSCertificate and removes the CT poison +// extension (preserving the order of other extensions), and returns the result +// still as a DER-encoded TBSCertificate. This function will fail if there is +// not exactly 1 CT poison extension present. +func RemoveCTPoison(tbsData []byte) ([]byte, error) { + return BuildPrecertTBS(tbsData, nil) +} + +// BuildPrecertTBS builds a Certificate Transparency pre-certificate (RFC 6962 +// s3.1) from the given DER-encoded TBSCertificate, returning a DER-encoded +// TBSCertificate. +// +// This function removes the CT poison extension (there must be exactly 1 of +// these), preserving the order of other extensions. +// +// If preIssuer is provided, this should be a special intermediate certificate +// that was used to sign the precert (indicated by having the special +// CertificateTransparency extended key usage). In this case, the issuance +// information of the pre-cert is updated to reflect the next issuer in the +// chain, i.e. the issuer of this special intermediate: +// - The precert's Issuer is changed to the Issuer of the intermediate +// - The precert's AuthorityKeyId is changed to the AuthorityKeyId of the +// intermediate. +func BuildPrecertTBS(tbsData []byte, preIssuer *Certificate) ([]byte, error) { + var tbs tbsCertificate + rest, err := asn1.Unmarshal(tbsData, &tbs) + if err != nil { + return nil, fmt.Errorf("failed to parse TBSCertificate: %v", err) + } else if rLen := len(rest); rLen > 0 { + return nil, fmt.Errorf("trailing data (%d bytes) after TBSCertificate", rLen) + } + poisonAt := -1 + for i, ext := range tbs.Extensions { + if ext.Id.Equal(OIDExtensionCTPoison) { + if poisonAt != -1 { + return nil, errors.New("multiple CT poison extensions present") + } + poisonAt = i + } + } + if poisonAt == -1 { + return nil, errors.New("no CT poison extension present") + } + tbs.Extensions = append(tbs.Extensions[:poisonAt], tbs.Extensions[poisonAt+1:]...) + tbs.Raw = nil + + if preIssuer != nil { + // Update the precert's Issuer field. Use the RawIssuer rather than the + // parsed Issuer to avoid any chance of ASN.1 differences (e.g. switching + // from UTF8String to PrintableString). + tbs.Issuer.FullBytes = preIssuer.RawIssuer + + // Also need to update the cert's AuthorityKeyID extension + // to that of the preIssuer. + var issuerKeyID []byte + for _, ext := range preIssuer.Extensions { + if ext.Id.Equal(OIDExtensionAuthorityKeyId) { + issuerKeyID = ext.Value + break + } + } + + // Check the preIssuer has the CT EKU. + seenCTEKU := false + for _, eku := range preIssuer.ExtKeyUsage { + if eku == ExtKeyUsageCertificateTransparency { + seenCTEKU = true + break + } + } + if !seenCTEKU { + return nil, fmt.Errorf("issuer does not have CertificateTransparency extended key usage") + } + + keyAt := -1 + for i, ext := range tbs.Extensions { + if ext.Id.Equal(OIDExtensionAuthorityKeyId) { + keyAt = i + break + } + } + if keyAt >= 0 { + // PreCert has an auth-key-id; replace it with the value from the preIssuer + if issuerKeyID != nil { + tbs.Extensions[keyAt].Value = issuerKeyID + } else { + tbs.Extensions = append(tbs.Extensions[:keyAt], tbs.Extensions[keyAt+1:]...) + } + } else if issuerKeyID != nil { + // PreCert did not have an auth-key-id, but the preIssuer does, so add it at the end. + authKeyIDExt := pkix.Extension{ + Id: OIDExtensionAuthorityKeyId, + Critical: false, + Value: issuerKeyID, + } + tbs.Extensions = append(tbs.Extensions, authKeyIDExt) + } + } + + data, err := asn1.Marshal(tbs) + if err != nil { + return nil, fmt.Errorf("failed to re-marshal TBSCertificate: %v", err) + } + return data, nil +} + +type basicConstraints struct { + IsCA bool `asn1:"optional"` + MaxPathLen int `asn1:"optional,default:-1"` +} + +// RFC 5280, 4.2.1.4 +type policyInformation struct { + Policy asn1.ObjectIdentifier + // policyQualifiers omitted +} + +const ( + nameTypeEmail = 1 + nameTypeDNS = 2 + nameTypeURI = 6 + nameTypeIP = 7 +) + +// RFC 5280, 4.2.2.1 +type authorityInfoAccess struct { + Method asn1.ObjectIdentifier + Location asn1.RawValue +} + +// RFC 5280, 4.2.1.14 +type distributionPoint struct { + DistributionPoint distributionPointName `asn1:"optional,tag:0"` + Reason asn1.BitString `asn1:"optional,tag:1"` + CRLIssuer asn1.RawValue `asn1:"optional,tag:2"` +} + +type distributionPointName struct { + FullName []asn1.RawValue `asn1:"optional,tag:0"` + RelativeName pkix.RDNSequence `asn1:"optional,tag:1"` +} + +func parsePublicKey(algo PublicKeyAlgorithm, keyData *publicKeyInfo) (interface{}, error) { + asn1Data := keyData.PublicKey.RightAlign() + switch algo { + case RSA: + // RSA public keys must have a NULL in the parameters + // (https://tools.ietf.org/html/rfc3279#section-2.3.1). + if !bytes.Equal(keyData.Algorithm.Parameters.FullBytes, asn1.NullBytes) { + return nil, errors.New("x509: RSA key missing NULL parameters") + } + + p := new(pkcs1PublicKey) + rest, err := asn1.Unmarshal(asn1Data, p) + if err != nil { + return nil, err + } + if len(rest) != 0 { + return nil, errors.New("x509: trailing data after RSA public key") + } + + if p.N.Sign() <= 0 { + return nil, errors.New("x509: RSA modulus is not a positive number") + } + if p.E <= 0 { + return nil, errors.New("x509: RSA public exponent is not a positive number") + } + + pub := &rsa.PublicKey{ + E: p.E, + N: p.N, + } + return pub, nil + case DSA: + var p *big.Int + rest, err := asn1.Unmarshal(asn1Data, &p) + if err != nil { + return nil, err + } + if len(rest) != 0 { + return nil, errors.New("x509: trailing data after DSA public key") + } + paramsData := keyData.Algorithm.Parameters.FullBytes + params := new(dsaAlgorithmParameters) + rest, err = asn1.Unmarshal(paramsData, params) + if err != nil { + return nil, err + } + if len(rest) != 0 { + return nil, errors.New("x509: trailing data after DSA parameters") + } + if p.Sign() <= 0 || params.P.Sign() <= 0 || params.Q.Sign() <= 0 || params.G.Sign() <= 0 { + return nil, errors.New("x509: zero or negative DSA parameter") + } + pub := &dsa.PublicKey{ + Parameters: dsa.Parameters{ + P: params.P, + Q: params.Q, + G: params.G, + }, + Y: p, + } + return pub, nil + case ECDSA: + paramsData := keyData.Algorithm.Parameters.FullBytes + namedCurveOID := new(asn1.ObjectIdentifier) + rest, err := asn1.Unmarshal(paramsData, namedCurveOID) + if err != nil { + return nil, err + } + if len(rest) != 0 { + return nil, errors.New("x509: trailing data after ECDSA parameters") + } + namedCurve := namedCurveFromOID(*namedCurveOID) + if namedCurve == nil { + return nil, errors.New("x509: unsupported elliptic curve") + } + x, y := elliptic.Unmarshal(namedCurve, asn1Data) + if x == nil { + return nil, errors.New("x509: failed to unmarshal elliptic curve point") + } + pub := &ecdsa.PublicKey{ + Curve: namedCurve, + X: x, + Y: y, + } + return pub, nil + default: + return nil, nil + } +} + +// NonFatalErrors is an error type which can hold a number of other errors. +// It's used to collect a range of non-fatal errors which occur while parsing +// a certificate, that way we can still match on certs which technically are +// invalid. +type NonFatalErrors struct { + Errors []error +} + +// Adds an error to the list of errors contained by NonFatalErrors. +func (e *NonFatalErrors) AddError(err error) { + e.Errors = append(e.Errors, err) +} + +// Returns a string consisting of the values of Error() from all of the errors +// contained in |e| +func (e NonFatalErrors) Error() string { + r := "NonFatalErrors: " + for _, err := range e.Errors { + r += err.Error() + "; " + } + return r +} + +// Returns true if |e| contains at least one error +func (e *NonFatalErrors) HasError() bool { + return len(e.Errors) > 0 +} + +func parseDistributionPoints(data []byte, crldp *[]string) error { + // CRLDistributionPoints ::= SEQUENCE SIZE (1..MAX) OF DistributionPoint + // + // DistributionPoint ::= SEQUENCE { + // distributionPoint [0] DistributionPointName OPTIONAL, + // reasons [1] ReasonFlags OPTIONAL, + // cRLIssuer [2] GeneralNames OPTIONAL } + // + // DistributionPointName ::= CHOICE { + // fullName [0] GeneralNames, + // nameRelativeToCRLIssuer [1] RelativeDistinguishedName } + + var cdp []distributionPoint + if rest, err := asn1.Unmarshal(data, &cdp); err != nil { + return err + } else if len(rest) != 0 { + return errors.New("x509: trailing data after X.509 CRL distribution point") + } + + for _, dp := range cdp { + // Per RFC 5280, 4.2.1.13, one of distributionPoint or cRLIssuer may be empty. + if len(dp.DistributionPoint.FullName) == 0 { + continue + } + + for _, fullName := range dp.DistributionPoint.FullName { + if fullName.Tag == 6 { + *crldp = append(*crldp, string(fullName.Bytes)) + } + } + } + return nil +} + +func forEachSAN(extension []byte, callback func(tag int, data []byte) error) error { + // RFC 5280, 4.2.1.6 + + // SubjectAltName ::= GeneralNames + // + // GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName + // + // GeneralName ::= CHOICE { + // otherName [0] OtherName, + // rfc822Name [1] IA5String, + // dNSName [2] IA5String, + // x400Address [3] ORAddress, + // directoryName [4] Name, + // ediPartyName [5] EDIPartyName, + // uniformResourceIdentifier [6] IA5String, + // iPAddress [7] OCTET STRING, + // registeredID [8] OBJECT IDENTIFIER } + var seq asn1.RawValue + rest, err := asn1.Unmarshal(extension, &seq) + if err != nil { + return err + } else if len(rest) != 0 { + return errors.New("x509: trailing data after X.509 extension") + } + if !seq.IsCompound || seq.Tag != asn1.TagSequence || seq.Class != asn1.ClassUniversal { + return asn1.StructuralError{Msg: "bad SAN sequence"} + } + + rest = seq.Bytes + for len(rest) > 0 { + var v asn1.RawValue + rest, err = asn1.Unmarshal(rest, &v) + if err != nil { + return err + } + + if err := callback(v.Tag, v.Bytes); err != nil { + return err + } + } + + return nil +} + +func parseSANExtension(value []byte, nfe *NonFatalErrors) (dnsNames, emailAddresses []string, ipAddresses []net.IP, uris []*url.URL, err error) { + err = forEachSAN(value, func(tag int, data []byte) error { + switch tag { + case nameTypeEmail: + mailbox := string(data) + if _, ok := parseRFC2821Mailbox(mailbox); !ok { + return fmt.Errorf("x509: cannot parse rfc822Name %q", mailbox) + } + emailAddresses = append(emailAddresses, mailbox) + case nameTypeDNS: + domain := string(data) + if _, ok := domainToReverseLabels(domain); !ok { + return fmt.Errorf("x509: cannot parse dnsName %q", string(data)) + } + dnsNames = append(dnsNames, domain) + case nameTypeURI: + uri, err := url.Parse(string(data)) + if err != nil { + return fmt.Errorf("x509: cannot parse URI %q: %s", string(data), err) + } + if len(uri.Host) > 0 { + if _, ok := domainToReverseLabels(uri.Host); !ok { + return fmt.Errorf("x509: cannot parse URI %q: invalid domain", string(data)) + } + } + uris = append(uris, uri) + case nameTypeIP: + switch len(data) { + case net.IPv4len, net.IPv6len: + ipAddresses = append(ipAddresses, data) + default: + nfe.AddError(fmt.Errorf("x509: certificate contained IP address of length %d : %v", len(data), data)) + } + } + + return nil + }) + + return +} + +// isValidIPMask returns true iff mask consists of zero or more 1 bits, followed by zero bits. +func isValidIPMask(mask []byte) bool { + seenZero := false + + for _, b := range mask { + if seenZero { + if b != 0 { + return false + } + + continue + } + + switch b { + case 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe: + seenZero = true + case 0xff: + default: + return false + } + } + + return true +} + +func parseNameConstraintsExtension(out *Certificate, e pkix.Extension) (unhandled bool, err error) { + // RFC 5280, 4.2.1.10 + + // NameConstraints ::= SEQUENCE { + // permittedSubtrees [0] GeneralSubtrees OPTIONAL, + // excludedSubtrees [1] GeneralSubtrees OPTIONAL } + // + // GeneralSubtrees ::= SEQUENCE SIZE (1..MAX) OF GeneralSubtree + // + // GeneralSubtree ::= SEQUENCE { + // base GeneralName, + // minimum [0] BaseDistance DEFAULT 0, + // maximum [1] BaseDistance OPTIONAL } + // + // BaseDistance ::= INTEGER (0..MAX) + + outer := cryptobyte.String(e.Value) + var toplevel, permitted, excluded cryptobyte.String + var havePermitted, haveExcluded bool + if !outer.ReadASN1(&toplevel, cryptobyte_asn1.SEQUENCE) || + !outer.Empty() || + !toplevel.ReadOptionalASN1(&permitted, &havePermitted, cryptobyte_asn1.Tag(0).ContextSpecific().Constructed()) || + !toplevel.ReadOptionalASN1(&excluded, &haveExcluded, cryptobyte_asn1.Tag(1).ContextSpecific().Constructed()) || + !toplevel.Empty() { + return false, errors.New("x509: invalid NameConstraints extension") + } + + if !havePermitted && !haveExcluded || len(permitted) == 0 && len(excluded) == 0 { + // https://tools.ietf.org/html/rfc5280#section-4.2.1.10: + // “either the permittedSubtrees field + // or the excludedSubtrees MUST be + // present” + return false, errors.New("x509: empty name constraints extension") + } + + getValues := func(subtrees cryptobyte.String) (dnsNames []string, ips []*net.IPNet, emails, uriDomains []string, err error) { + for !subtrees.Empty() { + var seq, value cryptobyte.String + var tag cryptobyte_asn1.Tag + if !subtrees.ReadASN1(&seq, cryptobyte_asn1.SEQUENCE) || + !seq.ReadAnyASN1(&value, &tag) { + return nil, nil, nil, nil, fmt.Errorf("x509: invalid NameConstraints extension") + } + + var ( + dnsTag = cryptobyte_asn1.Tag(2).ContextSpecific() + emailTag = cryptobyte_asn1.Tag(1).ContextSpecific() + ipTag = cryptobyte_asn1.Tag(7).ContextSpecific() + uriTag = cryptobyte_asn1.Tag(6).ContextSpecific() + ) + + switch tag { + case dnsTag: + domain := string(value) + if err := isIA5String(domain); err != nil { + return nil, nil, nil, nil, errors.New("x509: invalid constraint value: " + err.Error()) + } + + trimmedDomain := domain + if len(trimmedDomain) > 0 && trimmedDomain[0] == '.' { + // constraints can have a leading + // period to exclude the domain + // itself, but that's not valid in a + // normal domain name. + trimmedDomain = trimmedDomain[1:] + } + if _, ok := domainToReverseLabels(trimmedDomain); !ok { + return nil, nil, nil, nil, fmt.Errorf("x509: failed to parse dnsName constraint %q", domain) + } + dnsNames = append(dnsNames, domain) + + case ipTag: + l := len(value) + var ip, mask []byte + + switch l { + case 8: + ip = value[:4] + mask = value[4:] + + case 32: + ip = value[:16] + mask = value[16:] + + default: + return nil, nil, nil, nil, fmt.Errorf("x509: IP constraint contained value of length %d", l) + } + + if !isValidIPMask(mask) { + return nil, nil, nil, nil, fmt.Errorf("x509: IP constraint contained invalid mask %x", mask) + } + + ips = append(ips, &net.IPNet{IP: net.IP(ip), Mask: net.IPMask(mask)}) + + case emailTag: + constraint := string(value) + if err := isIA5String(constraint); err != nil { + return nil, nil, nil, nil, errors.New("x509: invalid constraint value: " + err.Error()) + } + + // If the constraint contains an @ then + // it specifies an exact mailbox name. + if strings.Contains(constraint, "@") { + if _, ok := parseRFC2821Mailbox(constraint); !ok { + return nil, nil, nil, nil, fmt.Errorf("x509: failed to parse rfc822Name constraint %q", constraint) + } + } else { + // Otherwise it's a domain name. + domain := constraint + if len(domain) > 0 && domain[0] == '.' { + domain = domain[1:] + } + if _, ok := domainToReverseLabels(domain); !ok { + return nil, nil, nil, nil, fmt.Errorf("x509: failed to parse rfc822Name constraint %q", constraint) + } + } + emails = append(emails, constraint) + + case uriTag: + domain := string(value) + if err := isIA5String(domain); err != nil { + return nil, nil, nil, nil, errors.New("x509: invalid constraint value: " + err.Error()) + } + + if net.ParseIP(domain) != nil { + return nil, nil, nil, nil, fmt.Errorf("x509: failed to parse URI constraint %q: cannot be IP address", domain) + } + + trimmedDomain := domain + if len(trimmedDomain) > 0 && trimmedDomain[0] == '.' { + // constraints can have a leading + // period to exclude the domain itself, + // but that's not valid in a normal + // domain name. + trimmedDomain = trimmedDomain[1:] + } + if _, ok := domainToReverseLabels(trimmedDomain); !ok { + return nil, nil, nil, nil, fmt.Errorf("x509: failed to parse URI constraint %q", domain) + } + uriDomains = append(uriDomains, domain) + + default: + unhandled = true + } + } + + return dnsNames, ips, emails, uriDomains, nil + } + + if out.PermittedDNSDomains, out.PermittedIPRanges, out.PermittedEmailAddresses, out.PermittedURIDomains, err = getValues(permitted); err != nil { + return false, err + } + if out.ExcludedDNSDomains, out.ExcludedIPRanges, out.ExcludedEmailAddresses, out.ExcludedURIDomains, err = getValues(excluded); err != nil { + return false, err + } + out.PermittedDNSDomainsCritical = e.Critical + + return unhandled, nil +} + +func parseCertificate(in *certificate) (*Certificate, error) { + var nfe NonFatalErrors + + out := new(Certificate) + out.Raw = in.Raw + out.RawTBSCertificate = in.TBSCertificate.Raw + out.RawSubjectPublicKeyInfo = in.TBSCertificate.PublicKey.Raw + out.RawSubject = in.TBSCertificate.Subject.FullBytes + out.RawIssuer = in.TBSCertificate.Issuer.FullBytes + + out.Signature = in.SignatureValue.RightAlign() + out.SignatureAlgorithm = SignatureAlgorithmFromAI(in.TBSCertificate.SignatureAlgorithm) + + out.PublicKeyAlgorithm = + getPublicKeyAlgorithmFromOID(in.TBSCertificate.PublicKey.Algorithm.Algorithm) + var err error + out.PublicKey, err = parsePublicKey(out.PublicKeyAlgorithm, &in.TBSCertificate.PublicKey) + if err != nil { + return nil, err + } + + out.Version = in.TBSCertificate.Version + 1 + out.SerialNumber = in.TBSCertificate.SerialNumber + + var issuer, subject pkix.RDNSequence + if rest, err := asn1.Unmarshal(in.TBSCertificate.Subject.FullBytes, &subject); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after X.509 subject") + } + if rest, err := asn1.Unmarshal(in.TBSCertificate.Issuer.FullBytes, &issuer); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after X.509 subject") + } + + out.Issuer.FillFromRDNSequence(&issuer) + out.Subject.FillFromRDNSequence(&subject) + + out.NotBefore = in.TBSCertificate.Validity.NotBefore + out.NotAfter = in.TBSCertificate.Validity.NotAfter + + for _, e := range in.TBSCertificate.Extensions { + out.Extensions = append(out.Extensions, e) + unhandled := false + + if len(e.Id) == 4 && e.Id[0] == OIDExtensionArc[0] && e.Id[1] == OIDExtensionArc[1] && e.Id[2] == OIDExtensionArc[2] { + switch e.Id[3] { + case OIDExtensionKeyUsage[3]: + // RFC 5280, 4.2.1.3 + var usageBits asn1.BitString + if rest, err := asn1.Unmarshal(e.Value, &usageBits); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after X.509 KeyUsage") + } + + var usage int + for i := 0; i < 9; i++ { + if usageBits.At(i) != 0 { + usage |= 1 << uint(i) + } + } + out.KeyUsage = KeyUsage(usage) + + case OIDExtensionBasicConstraints[3]: + // RFC 5280, 4.2.1.9 + var constraints basicConstraints + if rest, err := asn1.Unmarshal(e.Value, &constraints); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after X.509 BasicConstraints") + } + + out.BasicConstraintsValid = true + out.IsCA = constraints.IsCA + out.MaxPathLen = constraints.MaxPathLen + out.MaxPathLenZero = out.MaxPathLen == 0 + // TODO: map out.MaxPathLen to 0 if it has the -1 default value? (Issue 19285) + + case OIDExtensionSubjectAltName[3]: + out.DNSNames, out.EmailAddresses, out.IPAddresses, out.URIs, err = parseSANExtension(e.Value, &nfe) + if err != nil { + return nil, err + } + + if len(out.DNSNames) == 0 && len(out.EmailAddresses) == 0 && len(out.IPAddresses) == 0 && len(out.URIs) == 0 { + // If we didn't parse anything then we do the critical check, below. + unhandled = true + } + + case OIDExtensionNameConstraints[3]: + unhandled, err = parseNameConstraintsExtension(out, e) + if err != nil { + return nil, err + } + + case OIDExtensionCRLDistributionPoints[3]: + // RFC 5280, 4.2.1.13 + if err := parseDistributionPoints(e.Value, &out.CRLDistributionPoints); err != nil { + return nil, err + } + + case OIDExtensionAuthorityKeyId[3]: + // RFC 5280, 4.2.1.1 + var a authKeyId + if rest, err := asn1.Unmarshal(e.Value, &a); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after X.509 authority key-id") + } + out.AuthorityKeyId = a.Id + + case OIDExtensionExtendedKeyUsage[3]: + // RFC 5280, 4.2.1.12. Extended Key Usage + + // id-ce-extKeyUsage OBJECT IDENTIFIER ::= { id-ce 37 } + // + // ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId + // + // KeyPurposeId ::= OBJECT IDENTIFIER + + var keyUsage []asn1.ObjectIdentifier + if rest, err := asn1.Unmarshal(e.Value, &keyUsage); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after X.509 ExtendedKeyUsage") + } + + for _, u := range keyUsage { + if extKeyUsage, ok := extKeyUsageFromOID(u); ok { + out.ExtKeyUsage = append(out.ExtKeyUsage, extKeyUsage) + } else { + out.UnknownExtKeyUsage = append(out.UnknownExtKeyUsage, u) + } + } + + case OIDExtensionSubjectKeyId[3]: + // RFC 5280, 4.2.1.2 + var keyid []byte + if rest, err := asn1.Unmarshal(e.Value, &keyid); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after X.509 key-id") + } + out.SubjectKeyId = keyid + + case OIDExtensionCertificatePolicies[3]: + // RFC 5280 4.2.1.4: Certificate Policies + var policies []policyInformation + if rest, err := asn1.Unmarshal(e.Value, &policies); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after X.509 certificate policies") + } + out.PolicyIdentifiers = make([]asn1.ObjectIdentifier, len(policies)) + for i, policy := range policies { + out.PolicyIdentifiers[i] = policy.Policy + } + + default: + // Unknown extensions are recorded if critical. + unhandled = true + } + } else if e.Id.Equal(OIDExtensionAuthorityInfoAccess) { + // RFC 5280 4.2.2.1: Authority Information Access + var aia []authorityInfoAccess + if rest, err := asn1.Unmarshal(e.Value, &aia); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after X.509 authority information") + } + + for _, v := range aia { + // GeneralName: uniformResourceIdentifier [6] IA5String + if v.Location.Tag != 6 { + continue + } + if v.Method.Equal(OIDAuthorityInfoAccessOCSP) { + out.OCSPServer = append(out.OCSPServer, string(v.Location.Bytes)) + } else if v.Method.Equal(OIDAuthorityInfoAccessIssuers) { + out.IssuingCertificateURL = append(out.IssuingCertificateURL, string(v.Location.Bytes)) + } + } + } else if e.Id.Equal(OIDExtensionCTSCT) { + if rest, err := asn1.Unmarshal(e.Value, &out.RawSCT); err != nil { + nfe.AddError(fmt.Errorf("failed to asn1.Unmarshal SCT list extension: %v", err)) + } else if len(rest) != 0 { + nfe.AddError(errors.New("trailing data after ASN1-encoded SCT list")) + } else { + if rest, err := tls.Unmarshal(out.RawSCT, &out.SCTList); err != nil { + nfe.AddError(fmt.Errorf("failed to tls.Unmarshal SCT list: %v", err)) + } else if len(rest) != 0 { + nfe.AddError(errors.New("trailing data after TLS-encoded SCT list")) + } + } + } else { + // Unknown extensions are recorded if critical. + unhandled = true + } + + if e.Critical && unhandled { + out.UnhandledCriticalExtensions = append(out.UnhandledCriticalExtensions, e.Id) + } + } + if nfe.HasError() { + return out, nfe + } + return out, nil +} + +// ParseTBSCertificate parses a single TBSCertificate from the given ASN.1 DER data. +// The parsed data is returned in a Certificate struct for ease of access. +func ParseTBSCertificate(asn1Data []byte) (*Certificate, error) { + var tbsCert tbsCertificate + rest, err := asn1.Unmarshal(asn1Data, &tbsCert) + if err != nil { + return nil, err + } + if len(rest) > 0 { + return nil, asn1.SyntaxError{Msg: "trailing data"} + } + return parseCertificate(&certificate{ + Raw: tbsCert.Raw, + TBSCertificate: tbsCert}) +} + +// ParseCertificate parses a single certificate from the given ASN.1 DER data. +func ParseCertificate(asn1Data []byte) (*Certificate, error) { + var cert certificate + rest, err := asn1.Unmarshal(asn1Data, &cert) + if err != nil { + return nil, err + } + if len(rest) > 0 { + return nil, asn1.SyntaxError{Msg: "trailing data"} + } + + return parseCertificate(&cert) +} + +// ParseCertificates parses one or more certificates from the given ASN.1 DER +// data. The certificates must be concatenated with no intermediate padding. +func ParseCertificates(asn1Data []byte) ([]*Certificate, error) { + var v []*certificate + + for len(asn1Data) > 0 { + cert := new(certificate) + var err error + asn1Data, err = asn1.Unmarshal(asn1Data, cert) + if err != nil { + return nil, err + } + v = append(v, cert) + } + + ret := make([]*Certificate, len(v)) + for i, ci := range v { + cert, err := parseCertificate(ci) + if err != nil { + return nil, err + } + ret[i] = cert + } + + return ret, nil +} + +func reverseBitsInAByte(in byte) byte { + b1 := in>>4 | in<<4 + b2 := b1>>2&0x33 | b1<<2&0xcc + b3 := b2>>1&0x55 | b2<<1&0xaa + return b3 +} + +// asn1BitLength returns the bit-length of bitString by considering the +// most-significant bit in a byte to be the "first" bit. This convention +// matches ASN.1, but differs from almost everything else. +func asn1BitLength(bitString []byte) int { + bitLen := len(bitString) * 8 + + for i := range bitString { + b := bitString[len(bitString)-i-1] + + for bit := uint(0); bit < 8; bit++ { + if (b>>bit)&1 == 1 { + return bitLen + } + bitLen-- + } + } + + return 0 +} + +// OID values for standard extensions from RFC 5280. +var ( + OIDExtensionArc = asn1.ObjectIdentifier{2, 5, 29} // id-ce RFC5280 s4.2.1 + OIDExtensionSubjectKeyId = asn1.ObjectIdentifier{2, 5, 29, 14} + OIDExtensionKeyUsage = asn1.ObjectIdentifier{2, 5, 29, 15} + OIDExtensionExtendedKeyUsage = asn1.ObjectIdentifier{2, 5, 29, 37} + OIDExtensionAuthorityKeyId = asn1.ObjectIdentifier{2, 5, 29, 35} + OIDExtensionBasicConstraints = asn1.ObjectIdentifier{2, 5, 29, 19} + OIDExtensionSubjectAltName = asn1.ObjectIdentifier{2, 5, 29, 17} + OIDExtensionCertificatePolicies = asn1.ObjectIdentifier{2, 5, 29, 32} + OIDExtensionNameConstraints = asn1.ObjectIdentifier{2, 5, 29, 30} + OIDExtensionCRLDistributionPoints = asn1.ObjectIdentifier{2, 5, 29, 31} + OIDExtensionIssuerAltName = asn1.ObjectIdentifier{2, 5, 29, 18} + OIDExtensionSubjectDirectoryAttributes = asn1.ObjectIdentifier{2, 5, 29, 9} + OIDExtensionInhibitAnyPolicy = asn1.ObjectIdentifier{2, 5, 29, 54} + OIDExtensionPolicyConstraints = asn1.ObjectIdentifier{2, 5, 29, 36} + OIDExtensionPolicyMappings = asn1.ObjectIdentifier{2, 5, 29, 33} + OIDExtensionFreshestCRL = asn1.ObjectIdentifier{2, 5, 29, 46} + + OIDExtensionAuthorityInfoAccess = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 1, 1} + OIDExtensionSubjectInfoAccess = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 1, 11} + // OIDExtensionCTPoison is defined in RFC 6962 s3.1. + OIDExtensionCTPoison = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 11129, 2, 4, 3} + // OIDExtensionCTSCT is defined in RFC 6962 s3.3. + OIDExtensionCTSCT = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 11129, 2, 4, 2} +) + +var ( + OIDAuthorityInfoAccessOCSP = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 48, 1} + OIDAuthorityInfoAccessIssuers = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 48, 2} +) + +// oidInExtensions returns whether an extension with the given oid exists in +// extensions. +func oidInExtensions(oid asn1.ObjectIdentifier, extensions []pkix.Extension) bool { + for _, e := range extensions { + if e.Id.Equal(oid) { + return true + } + } + return false +} + +// marshalSANs marshals a list of addresses into a the contents of an X.509 +// SubjectAlternativeName extension. +func marshalSANs(dnsNames, emailAddresses []string, ipAddresses []net.IP, uris []*url.URL) (derBytes []byte, err error) { + var rawValues []asn1.RawValue + for _, name := range dnsNames { + rawValues = append(rawValues, asn1.RawValue{Tag: nameTypeDNS, Class: asn1.ClassContextSpecific, Bytes: []byte(name)}) + } + for _, email := range emailAddresses { + rawValues = append(rawValues, asn1.RawValue{Tag: nameTypeEmail, Class: asn1.ClassContextSpecific, Bytes: []byte(email)}) + } + for _, rawIP := range ipAddresses { + // If possible, we always want to encode IPv4 addresses in 4 bytes. + ip := rawIP.To4() + if ip == nil { + ip = rawIP + } + rawValues = append(rawValues, asn1.RawValue{Tag: nameTypeIP, Class: asn1.ClassContextSpecific, Bytes: ip}) + } + for _, uri := range uris { + rawValues = append(rawValues, asn1.RawValue{Tag: nameTypeURI, Class: asn1.ClassContextSpecific, Bytes: []byte(uri.String())}) + } + return asn1.Marshal(rawValues) +} + +func isIA5String(s string) error { + for _, r := range s { + if r >= utf8.RuneSelf { + return fmt.Errorf("x509: %q cannot be encoded as an IA5String", s) + } + } + + return nil +} + +func buildExtensions(template *Certificate, subjectIsEmpty bool, authorityKeyId []byte) (ret []pkix.Extension, err error) { + ret = make([]pkix.Extension, 11 /* maximum number of elements. */) + n := 0 + + if template.KeyUsage != 0 && + !oidInExtensions(OIDExtensionKeyUsage, template.ExtraExtensions) { + ret[n].Id = OIDExtensionKeyUsage + ret[n].Critical = true + + var a [2]byte + a[0] = reverseBitsInAByte(byte(template.KeyUsage)) + a[1] = reverseBitsInAByte(byte(template.KeyUsage >> 8)) + + l := 1 + if a[1] != 0 { + l = 2 + } + + bitString := a[:l] + ret[n].Value, err = asn1.Marshal(asn1.BitString{Bytes: bitString, BitLength: asn1BitLength(bitString)}) + if err != nil { + return + } + n++ + } + + if (len(template.ExtKeyUsage) > 0 || len(template.UnknownExtKeyUsage) > 0) && + !oidInExtensions(OIDExtensionExtendedKeyUsage, template.ExtraExtensions) { + ret[n].Id = OIDExtensionExtendedKeyUsage + + var oids []asn1.ObjectIdentifier + for _, u := range template.ExtKeyUsage { + if oid, ok := oidFromExtKeyUsage(u); ok { + oids = append(oids, oid) + } else { + panic("internal error") + } + } + + oids = append(oids, template.UnknownExtKeyUsage...) + + ret[n].Value, err = asn1.Marshal(oids) + if err != nil { + return + } + n++ + } + + if template.BasicConstraintsValid && !oidInExtensions(OIDExtensionBasicConstraints, template.ExtraExtensions) { + // Leaving MaxPathLen as zero indicates that no maximum path + // length is desired, unless MaxPathLenZero is set. A value of + // -1 causes encoding/asn1 to omit the value as desired. + maxPathLen := template.MaxPathLen + if maxPathLen == 0 && !template.MaxPathLenZero { + maxPathLen = -1 + } + ret[n].Id = OIDExtensionBasicConstraints + ret[n].Value, err = asn1.Marshal(basicConstraints{template.IsCA, maxPathLen}) + ret[n].Critical = true + if err != nil { + return + } + n++ + } + + if len(template.SubjectKeyId) > 0 && !oidInExtensions(OIDExtensionSubjectKeyId, template.ExtraExtensions) { + ret[n].Id = OIDExtensionSubjectKeyId + ret[n].Value, err = asn1.Marshal(template.SubjectKeyId) + if err != nil { + return + } + n++ + } + + if len(authorityKeyId) > 0 && !oidInExtensions(OIDExtensionAuthorityKeyId, template.ExtraExtensions) { + ret[n].Id = OIDExtensionAuthorityKeyId + ret[n].Value, err = asn1.Marshal(authKeyId{authorityKeyId}) + if err != nil { + return + } + n++ + } + + if (len(template.OCSPServer) > 0 || len(template.IssuingCertificateURL) > 0) && + !oidInExtensions(OIDExtensionAuthorityInfoAccess, template.ExtraExtensions) { + ret[n].Id = OIDExtensionAuthorityInfoAccess + var aiaValues []authorityInfoAccess + for _, name := range template.OCSPServer { + aiaValues = append(aiaValues, authorityInfoAccess{ + Method: OIDAuthorityInfoAccessOCSP, + Location: asn1.RawValue{Tag: 6, Class: asn1.ClassContextSpecific, Bytes: []byte(name)}, + }) + } + for _, name := range template.IssuingCertificateURL { + aiaValues = append(aiaValues, authorityInfoAccess{ + Method: OIDAuthorityInfoAccessIssuers, + Location: asn1.RawValue{Tag: 6, Class: asn1.ClassContextSpecific, Bytes: []byte(name)}, + }) + } + ret[n].Value, err = asn1.Marshal(aiaValues) + if err != nil { + return + } + n++ + } + + if (len(template.DNSNames) > 0 || len(template.EmailAddresses) > 0 || len(template.IPAddresses) > 0 || len(template.URIs) > 0) && + !oidInExtensions(OIDExtensionSubjectAltName, template.ExtraExtensions) { + ret[n].Id = OIDExtensionSubjectAltName + // https://tools.ietf.org/html/rfc5280#section-4.2.1.6 + // “If the subject field contains an empty sequence ... then + // subjectAltName extension ... is marked as critical” + ret[n].Critical = subjectIsEmpty + ret[n].Value, err = marshalSANs(template.DNSNames, template.EmailAddresses, template.IPAddresses, template.URIs) + if err != nil { + return + } + n++ + } + + if len(template.PolicyIdentifiers) > 0 && + !oidInExtensions(OIDExtensionCertificatePolicies, template.ExtraExtensions) { + ret[n].Id = OIDExtensionCertificatePolicies + policies := make([]policyInformation, len(template.PolicyIdentifiers)) + for i, policy := range template.PolicyIdentifiers { + policies[i].Policy = policy + } + ret[n].Value, err = asn1.Marshal(policies) + if err != nil { + return + } + n++ + } + + if (len(template.PermittedDNSDomains) > 0 || len(template.ExcludedDNSDomains) > 0 || + len(template.PermittedIPRanges) > 0 || len(template.ExcludedIPRanges) > 0 || + len(template.PermittedEmailAddresses) > 0 || len(template.ExcludedEmailAddresses) > 0 || + len(template.PermittedURIDomains) > 0 || len(template.ExcludedURIDomains) > 0) && + !oidInExtensions(OIDExtensionNameConstraints, template.ExtraExtensions) { + ret[n].Id = OIDExtensionNameConstraints + ret[n].Critical = template.PermittedDNSDomainsCritical + + ipAndMask := func(ipNet *net.IPNet) []byte { + maskedIP := ipNet.IP.Mask(ipNet.Mask) + ipAndMask := make([]byte, 0, len(maskedIP)+len(ipNet.Mask)) + ipAndMask = append(ipAndMask, maskedIP...) + ipAndMask = append(ipAndMask, ipNet.Mask...) + return ipAndMask + } + + serialiseConstraints := func(dns []string, ips []*net.IPNet, emails []string, uriDomains []string) (der []byte, err error) { + var b cryptobyte.Builder + + for _, name := range dns { + if err = isIA5String(name); err != nil { + return nil, err + } + + b.AddASN1(cryptobyte_asn1.SEQUENCE, func(b *cryptobyte.Builder) { + b.AddASN1(cryptobyte_asn1.Tag(2).ContextSpecific(), func(b *cryptobyte.Builder) { + b.AddBytes([]byte(name)) + }) + }) + } + + for _, ipNet := range ips { + b.AddASN1(cryptobyte_asn1.SEQUENCE, func(b *cryptobyte.Builder) { + b.AddASN1(cryptobyte_asn1.Tag(7).ContextSpecific(), func(b *cryptobyte.Builder) { + b.AddBytes(ipAndMask(ipNet)) + }) + }) + } + + for _, email := range emails { + if err = isIA5String(email); err != nil { + return nil, err + } + + b.AddASN1(cryptobyte_asn1.SEQUENCE, func(b *cryptobyte.Builder) { + b.AddASN1(cryptobyte_asn1.Tag(1).ContextSpecific(), func(b *cryptobyte.Builder) { + b.AddBytes([]byte(email)) + }) + }) + } + + for _, uriDomain := range uriDomains { + if err = isIA5String(uriDomain); err != nil { + return nil, err + } + + b.AddASN1(cryptobyte_asn1.SEQUENCE, func(b *cryptobyte.Builder) { + b.AddASN1(cryptobyte_asn1.Tag(6).ContextSpecific(), func(b *cryptobyte.Builder) { + b.AddBytes([]byte(uriDomain)) + }) + }) + } + + return b.Bytes() + } + + permitted, err := serialiseConstraints(template.PermittedDNSDomains, template.PermittedIPRanges, template.PermittedEmailAddresses, template.PermittedURIDomains) + if err != nil { + return nil, err + } + + excluded, err := serialiseConstraints(template.ExcludedDNSDomains, template.ExcludedIPRanges, template.ExcludedEmailAddresses, template.ExcludedURIDomains) + if err != nil { + return nil, err + } + + var b cryptobyte.Builder + b.AddASN1(cryptobyte_asn1.SEQUENCE, func(b *cryptobyte.Builder) { + if len(permitted) > 0 { + b.AddASN1(cryptobyte_asn1.Tag(0).ContextSpecific().Constructed(), func(b *cryptobyte.Builder) { + b.AddBytes(permitted) + }) + } + + if len(excluded) > 0 { + b.AddASN1(cryptobyte_asn1.Tag(1).ContextSpecific().Constructed(), func(b *cryptobyte.Builder) { + b.AddBytes(excluded) + }) + } + }) + + ret[n].Value, err = b.Bytes() + if err != nil { + return nil, err + } + n++ + } + + if len(template.CRLDistributionPoints) > 0 && + !oidInExtensions(OIDExtensionCRLDistributionPoints, template.ExtraExtensions) { + ret[n].Id = OIDExtensionCRLDistributionPoints + + var crlDp []distributionPoint + for _, name := range template.CRLDistributionPoints { + dp := distributionPoint{ + DistributionPoint: distributionPointName{ + FullName: []asn1.RawValue{ + asn1.RawValue{Tag: 6, Class: asn1.ClassContextSpecific, Bytes: []byte(name)}, + }, + }, + } + crlDp = append(crlDp, dp) + } + + ret[n].Value, err = asn1.Marshal(crlDp) + if err != nil { + return + } + n++ + } + + if (len(template.RawSCT) > 0 || len(template.SCTList.SCTList) > 0) && !oidInExtensions(OIDExtensionCTSCT, template.ExtraExtensions) { + rawSCT := template.RawSCT + if len(template.SCTList.SCTList) > 0 { + rawSCT, err = tls.Marshal(template.SCTList) + if err != nil { + return + } + } + ret[n].Id = OIDExtensionCTSCT + ret[n].Value, err = asn1.Marshal(rawSCT) + if err != nil { + return + } + n++ + } + + // Adding another extension here? Remember to update the maximum number + // of elements in the make() at the top of the function. + + return append(ret[:n], template.ExtraExtensions...), nil +} + +func subjectBytes(cert *Certificate) ([]byte, error) { + if len(cert.RawSubject) > 0 { + return cert.RawSubject, nil + } + + return asn1.Marshal(cert.Subject.ToRDNSequence()) +} + +// signingParamsForPublicKey returns the parameters to use for signing with +// priv. If requestedSigAlgo is not zero then it overrides the default +// signature algorithm. +func signingParamsForPublicKey(pub interface{}, requestedSigAlgo SignatureAlgorithm) (hashFunc crypto.Hash, sigAlgo pkix.AlgorithmIdentifier, err error) { + var pubType PublicKeyAlgorithm + + switch pub := pub.(type) { + case *rsa.PublicKey: + pubType = RSA + hashFunc = crypto.SHA256 + sigAlgo.Algorithm = oidSignatureSHA256WithRSA + sigAlgo.Parameters = asn1.NullRawValue + + case *ecdsa.PublicKey: + pubType = ECDSA + + switch pub.Curve { + case elliptic.P224(), elliptic.P256(): + hashFunc = crypto.SHA256 + sigAlgo.Algorithm = oidSignatureECDSAWithSHA256 + case elliptic.P384(): + hashFunc = crypto.SHA384 + sigAlgo.Algorithm = oidSignatureECDSAWithSHA384 + case elliptic.P521(): + hashFunc = crypto.SHA512 + sigAlgo.Algorithm = oidSignatureECDSAWithSHA512 + default: + err = errors.New("x509: unknown elliptic curve") + } + + default: + err = errors.New("x509: only RSA and ECDSA keys supported") + } + + if err != nil { + return + } + + if requestedSigAlgo == 0 { + return + } + + found := false + for _, details := range signatureAlgorithmDetails { + if details.algo == requestedSigAlgo { + if details.pubKeyAlgo != pubType { + err = errors.New("x509: requested SignatureAlgorithm does not match private key type") + return + } + sigAlgo.Algorithm, hashFunc = details.oid, details.hash + if hashFunc == 0 { + err = errors.New("x509: cannot sign with hash function requested") + return + } + if requestedSigAlgo.isRSAPSS() { + sigAlgo.Parameters = rsaPSSParameters(hashFunc) + } + found = true + break + } + } + + if !found { + err = errors.New("x509: unknown SignatureAlgorithm") + } + + return +} + +// emptyASN1Subject is the ASN.1 DER encoding of an empty Subject, which is +// just an empty SEQUENCE. +var emptyASN1Subject = []byte{0x30, 0} + +// CreateCertificate creates a new X.509v3 certificate based on a template. +// The following members of template are used: AuthorityKeyId, +// BasicConstraintsValid, DNSNames, ExcludedDNSDomains, ExtKeyUsage, +// IsCA, KeyUsage, MaxPathLen, MaxPathLenZero, NotAfter, NotBefore, +// PermittedDNSDomains, PermittedDNSDomainsCritical, SerialNumber, +// SignatureAlgorithm, Subject, SubjectKeyId, UnknownExtKeyUsage, +// and RawSCT. +// +// The certificate is signed by parent. If parent is equal to template then the +// certificate is self-signed. The parameter pub is the public key of the +// signee and priv is the private key of the signer. +// +// The returned slice is the certificate in DER encoding. +// +// All keys types that are implemented via crypto.Signer are supported (This +// includes *rsa.PublicKey and *ecdsa.PublicKey.) +// +// The AuthorityKeyId will be taken from the SubjectKeyId of parent, if any, +// unless the resulting certificate is self-signed. Otherwise the value from +// template will be used. +func CreateCertificate(rand io.Reader, template, parent *Certificate, pub, priv interface{}) (cert []byte, err error) { + key, ok := priv.(crypto.Signer) + if !ok { + return nil, errors.New("x509: certificate private key does not implement crypto.Signer") + } + + if template.SerialNumber == nil { + return nil, errors.New("x509: no SerialNumber given") + } + + hashFunc, signatureAlgorithm, err := signingParamsForPublicKey(key.Public(), template.SignatureAlgorithm) + if err != nil { + return nil, err + } + + publicKeyBytes, publicKeyAlgorithm, err := marshalPublicKey(pub) + if err != nil { + return nil, err + } + + asn1Issuer, err := subjectBytes(parent) + if err != nil { + return + } + + asn1Subject, err := subjectBytes(template) + if err != nil { + return + } + + authorityKeyId := template.AuthorityKeyId + if !bytes.Equal(asn1Issuer, asn1Subject) && len(parent.SubjectKeyId) > 0 { + authorityKeyId = parent.SubjectKeyId + } + + extensions, err := buildExtensions(template, bytes.Equal(asn1Subject, emptyASN1Subject), authorityKeyId) + if err != nil { + return + } + + encodedPublicKey := asn1.BitString{BitLength: len(publicKeyBytes) * 8, Bytes: publicKeyBytes} + c := tbsCertificate{ + Version: 2, + SerialNumber: template.SerialNumber, + SignatureAlgorithm: signatureAlgorithm, + Issuer: asn1.RawValue{FullBytes: asn1Issuer}, + Validity: validity{template.NotBefore.UTC(), template.NotAfter.UTC()}, + Subject: asn1.RawValue{FullBytes: asn1Subject}, + PublicKey: publicKeyInfo{nil, publicKeyAlgorithm, encodedPublicKey}, + Extensions: extensions, + } + + tbsCertContents, err := asn1.Marshal(c) + if err != nil { + return + } + + c.Raw = tbsCertContents + + h := hashFunc.New() + h.Write(tbsCertContents) + digest := h.Sum(nil) + + var signerOpts crypto.SignerOpts + signerOpts = hashFunc + if template.SignatureAlgorithm != 0 && template.SignatureAlgorithm.isRSAPSS() { + signerOpts = &rsa.PSSOptions{ + SaltLength: rsa.PSSSaltLengthEqualsHash, + Hash: hashFunc, + } + } + + var signature []byte + signature, err = key.Sign(rand, digest, signerOpts) + if err != nil { + return + } + + return asn1.Marshal(certificate{ + nil, + c, + signatureAlgorithm, + asn1.BitString{Bytes: signature, BitLength: len(signature) * 8}, + }) +} + +// pemCRLPrefix is the magic string that indicates that we have a PEM encoded +// CRL. +var pemCRLPrefix = []byte("-----BEGIN X509 CRL") + +// pemType is the type of a PEM encoded CRL. +var pemType = "X509 CRL" + +// ParseCRL parses a CRL from the given bytes. It's often the case that PEM +// encoded CRLs will appear where they should be DER encoded, so this function +// will transparently handle PEM encoding as long as there isn't any leading +// garbage. +func ParseCRL(crlBytes []byte) (*pkix.CertificateList, error) { + if bytes.HasPrefix(crlBytes, pemCRLPrefix) { + block, _ := pem.Decode(crlBytes) + if block != nil && block.Type == pemType { + crlBytes = block.Bytes + } + } + return ParseDERCRL(crlBytes) +} + +// ParseDERCRL parses a DER encoded CRL from the given bytes. +func ParseDERCRL(derBytes []byte) (*pkix.CertificateList, error) { + certList := new(pkix.CertificateList) + if rest, err := asn1.Unmarshal(derBytes, certList); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after CRL") + } + return certList, nil +} + +// CreateCRL returns a DER encoded CRL, signed by this Certificate, that +// contains the given list of revoked certificates. +func (c *Certificate) CreateCRL(rand io.Reader, priv interface{}, revokedCerts []pkix.RevokedCertificate, now, expiry time.Time) (crlBytes []byte, err error) { + key, ok := priv.(crypto.Signer) + if !ok { + return nil, errors.New("x509: certificate private key does not implement crypto.Signer") + } + + hashFunc, signatureAlgorithm, err := signingParamsForPublicKey(key.Public(), 0) + if err != nil { + return nil, err + } + + // Force revocation times to UTC per RFC 5280. + revokedCertsUTC := make([]pkix.RevokedCertificate, len(revokedCerts)) + for i, rc := range revokedCerts { + rc.RevocationTime = rc.RevocationTime.UTC() + revokedCertsUTC[i] = rc + } + + tbsCertList := pkix.TBSCertificateList{ + Version: 1, + Signature: signatureAlgorithm, + Issuer: c.Subject.ToRDNSequence(), + ThisUpdate: now.UTC(), + NextUpdate: expiry.UTC(), + RevokedCertificates: revokedCertsUTC, + } + + // Authority Key Id + if len(c.SubjectKeyId) > 0 { + var aki pkix.Extension + aki.Id = OIDExtensionAuthorityKeyId + aki.Value, err = asn1.Marshal(authKeyId{Id: c.SubjectKeyId}) + if err != nil { + return + } + tbsCertList.Extensions = append(tbsCertList.Extensions, aki) + } + + tbsCertListContents, err := asn1.Marshal(tbsCertList) + if err != nil { + return + } + + h := hashFunc.New() + h.Write(tbsCertListContents) + digest := h.Sum(nil) + + var signature []byte + signature, err = key.Sign(rand, digest, hashFunc) + if err != nil { + return + } + + return asn1.Marshal(pkix.CertificateList{ + TBSCertList: tbsCertList, + SignatureAlgorithm: signatureAlgorithm, + SignatureValue: asn1.BitString{Bytes: signature, BitLength: len(signature) * 8}, + }) +} + +// CertificateRequest represents a PKCS #10, certificate signature request. +type CertificateRequest struct { + Raw []byte // Complete ASN.1 DER content (CSR, signature algorithm and signature). + RawTBSCertificateRequest []byte // Certificate request info part of raw ASN.1 DER content. + RawSubjectPublicKeyInfo []byte // DER encoded SubjectPublicKeyInfo. + RawSubject []byte // DER encoded Subject. + + Version int + Signature []byte + SignatureAlgorithm SignatureAlgorithm + + PublicKeyAlgorithm PublicKeyAlgorithm + PublicKey interface{} + + Subject pkix.Name + + // Attributes is the dried husk of a bug and shouldn't be used. + Attributes []pkix.AttributeTypeAndValueSET + + // Extensions contains raw X.509 extensions. When parsing CSRs, this + // can be used to extract extensions that are not parsed by this + // package. + Extensions []pkix.Extension + + // ExtraExtensions contains extensions to be copied, raw, into any + // marshaled CSR. Values override any extensions that would otherwise + // be produced based on the other fields but are overridden by any + // extensions specified in Attributes. + // + // The ExtraExtensions field is not populated when parsing CSRs, see + // Extensions. + ExtraExtensions []pkix.Extension + + // Subject Alternate Name values. + DNSNames []string + EmailAddresses []string + IPAddresses []net.IP + URIs []*url.URL +} + +// These structures reflect the ASN.1 structure of X.509 certificate +// signature requests (see RFC 2986): + +type tbsCertificateRequest struct { + Raw asn1.RawContent + Version int + Subject asn1.RawValue + PublicKey publicKeyInfo + RawAttributes []asn1.RawValue `asn1:"tag:0"` +} + +type certificateRequest struct { + Raw asn1.RawContent + TBSCSR tbsCertificateRequest + SignatureAlgorithm pkix.AlgorithmIdentifier + SignatureValue asn1.BitString +} + +// oidExtensionRequest is a PKCS#9 OBJECT IDENTIFIER that indicates requested +// extensions in a CSR. +var oidExtensionRequest = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 9, 14} + +// newRawAttributes converts AttributeTypeAndValueSETs from a template +// CertificateRequest's Attributes into tbsCertificateRequest RawAttributes. +func newRawAttributes(attributes []pkix.AttributeTypeAndValueSET) ([]asn1.RawValue, error) { + var rawAttributes []asn1.RawValue + b, err := asn1.Marshal(attributes) + if err != nil { + return nil, err + } + rest, err := asn1.Unmarshal(b, &rawAttributes) + if err != nil { + return nil, err + } + if len(rest) != 0 { + return nil, errors.New("x509: failed to unmarshal raw CSR Attributes") + } + return rawAttributes, nil +} + +// parseRawAttributes Unmarshals RawAttributes intos AttributeTypeAndValueSETs. +func parseRawAttributes(rawAttributes []asn1.RawValue) []pkix.AttributeTypeAndValueSET { + var attributes []pkix.AttributeTypeAndValueSET + for _, rawAttr := range rawAttributes { + var attr pkix.AttributeTypeAndValueSET + rest, err := asn1.Unmarshal(rawAttr.FullBytes, &attr) + // Ignore attributes that don't parse into pkix.AttributeTypeAndValueSET + // (i.e.: challengePassword or unstructuredName). + if err == nil && len(rest) == 0 { + attributes = append(attributes, attr) + } + } + return attributes +} + +// parseCSRExtensions parses the attributes from a CSR and extracts any +// requested extensions. +func parseCSRExtensions(rawAttributes []asn1.RawValue) ([]pkix.Extension, error) { + // pkcs10Attribute reflects the Attribute structure from section 4.1 of + // https://tools.ietf.org/html/rfc2986. + type pkcs10Attribute struct { + Id asn1.ObjectIdentifier + Values []asn1.RawValue `asn1:"set"` + } + + var ret []pkix.Extension + for _, rawAttr := range rawAttributes { + var attr pkcs10Attribute + if rest, err := asn1.Unmarshal(rawAttr.FullBytes, &attr); err != nil || len(rest) != 0 || len(attr.Values) == 0 { + // Ignore attributes that don't parse. + continue + } + + if !attr.Id.Equal(oidExtensionRequest) { + continue + } + + var extensions []pkix.Extension + if _, err := asn1.Unmarshal(attr.Values[0].FullBytes, &extensions); err != nil { + return nil, err + } + ret = append(ret, extensions...) + } + + return ret, nil +} + +// CreateCertificateRequest creates a new certificate request based on a +// template. The following members of template are used: Attributes, DNSNames, +// EmailAddresses, ExtraExtensions, IPAddresses, URIs, SignatureAlgorithm, and +// Subject. The private key is the private key of the signer. +// +// The returned slice is the certificate request in DER encoding. +// +// All keys types that are implemented via crypto.Signer are supported (This +// includes *rsa.PublicKey and *ecdsa.PublicKey.) +func CreateCertificateRequest(rand io.Reader, template *CertificateRequest, priv interface{}) (csr []byte, err error) { + key, ok := priv.(crypto.Signer) + if !ok { + return nil, errors.New("x509: certificate private key does not implement crypto.Signer") + } + + var hashFunc crypto.Hash + var sigAlgo pkix.AlgorithmIdentifier + hashFunc, sigAlgo, err = signingParamsForPublicKey(key.Public(), template.SignatureAlgorithm) + if err != nil { + return nil, err + } + + var publicKeyBytes []byte + var publicKeyAlgorithm pkix.AlgorithmIdentifier + publicKeyBytes, publicKeyAlgorithm, err = marshalPublicKey(key.Public()) + if err != nil { + return nil, err + } + + var extensions []pkix.Extension + + if (len(template.DNSNames) > 0 || len(template.EmailAddresses) > 0 || len(template.IPAddresses) > 0 || len(template.URIs) > 0) && + !oidInExtensions(OIDExtensionSubjectAltName, template.ExtraExtensions) { + sanBytes, err := marshalSANs(template.DNSNames, template.EmailAddresses, template.IPAddresses, template.URIs) + if err != nil { + return nil, err + } + + extensions = append(extensions, pkix.Extension{ + Id: OIDExtensionSubjectAltName, + Value: sanBytes, + }) + } + + extensions = append(extensions, template.ExtraExtensions...) + + var attributes []pkix.AttributeTypeAndValueSET + attributes = append(attributes, template.Attributes...) + + if len(extensions) > 0 { + // specifiedExtensions contains all the extensions that we + // found specified via template.Attributes. + specifiedExtensions := make(map[string]bool) + + for _, atvSet := range template.Attributes { + if !atvSet.Type.Equal(oidExtensionRequest) { + continue + } + + for _, atvs := range atvSet.Value { + for _, atv := range atvs { + specifiedExtensions[atv.Type.String()] = true + } + } + } + + atvs := make([]pkix.AttributeTypeAndValue, 0, len(extensions)) + for _, e := range extensions { + if specifiedExtensions[e.Id.String()] { + // Attributes already contained a value for + // this extension and it takes priority. + continue + } + + atvs = append(atvs, pkix.AttributeTypeAndValue{ + // There is no place for the critical flag in a CSR. + Type: e.Id, + Value: e.Value, + }) + } + + // Append the extensions to an existing attribute if possible. + appended := false + for _, atvSet := range attributes { + if !atvSet.Type.Equal(oidExtensionRequest) || len(atvSet.Value) == 0 { + continue + } + + atvSet.Value[0] = append(atvSet.Value[0], atvs...) + appended = true + break + } + + // Otherwise, add a new attribute for the extensions. + if !appended { + attributes = append(attributes, pkix.AttributeTypeAndValueSET{ + Type: oidExtensionRequest, + Value: [][]pkix.AttributeTypeAndValue{ + atvs, + }, + }) + } + } + + asn1Subject := template.RawSubject + if len(asn1Subject) == 0 { + asn1Subject, err = asn1.Marshal(template.Subject.ToRDNSequence()) + if err != nil { + return + } + } + + rawAttributes, err := newRawAttributes(attributes) + if err != nil { + return + } + + tbsCSR := tbsCertificateRequest{ + Version: 0, // PKCS #10, RFC 2986 + Subject: asn1.RawValue{FullBytes: asn1Subject}, + PublicKey: publicKeyInfo{ + Algorithm: publicKeyAlgorithm, + PublicKey: asn1.BitString{ + Bytes: publicKeyBytes, + BitLength: len(publicKeyBytes) * 8, + }, + }, + RawAttributes: rawAttributes, + } + + tbsCSRContents, err := asn1.Marshal(tbsCSR) + if err != nil { + return + } + tbsCSR.Raw = tbsCSRContents + + h := hashFunc.New() + h.Write(tbsCSRContents) + digest := h.Sum(nil) + + var signature []byte + signature, err = key.Sign(rand, digest, hashFunc) + if err != nil { + return + } + + return asn1.Marshal(certificateRequest{ + TBSCSR: tbsCSR, + SignatureAlgorithm: sigAlgo, + SignatureValue: asn1.BitString{ + Bytes: signature, + BitLength: len(signature) * 8, + }, + }) +} + +// ParseCertificateRequest parses a single certificate request from the +// given ASN.1 DER data. +func ParseCertificateRequest(asn1Data []byte) (*CertificateRequest, error) { + var csr certificateRequest + + rest, err := asn1.Unmarshal(asn1Data, &csr) + if err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, asn1.SyntaxError{Msg: "trailing data"} + } + + return parseCertificateRequest(&csr) +} + +func parseCertificateRequest(in *certificateRequest) (*CertificateRequest, error) { + out := &CertificateRequest{ + Raw: in.Raw, + RawTBSCertificateRequest: in.TBSCSR.Raw, + RawSubjectPublicKeyInfo: in.TBSCSR.PublicKey.Raw, + RawSubject: in.TBSCSR.Subject.FullBytes, + + Signature: in.SignatureValue.RightAlign(), + SignatureAlgorithm: SignatureAlgorithmFromAI(in.SignatureAlgorithm), + + PublicKeyAlgorithm: getPublicKeyAlgorithmFromOID(in.TBSCSR.PublicKey.Algorithm.Algorithm), + + Version: in.TBSCSR.Version, + Attributes: parseRawAttributes(in.TBSCSR.RawAttributes), + } + + var err error + out.PublicKey, err = parsePublicKey(out.PublicKeyAlgorithm, &in.TBSCSR.PublicKey) + if err != nil { + return nil, err + } + + var subject pkix.RDNSequence + if rest, err := asn1.Unmarshal(in.TBSCSR.Subject.FullBytes, &subject); err != nil { + return nil, err + } else if len(rest) != 0 { + return nil, errors.New("x509: trailing data after X.509 Subject") + } + + out.Subject.FillFromRDNSequence(&subject) + + if out.Extensions, err = parseCSRExtensions(in.TBSCSR.RawAttributes); err != nil { + return nil, err + } + + var nfe NonFatalErrors + for _, extension := range out.Extensions { + if extension.Id.Equal(OIDExtensionSubjectAltName) { + out.DNSNames, out.EmailAddresses, out.IPAddresses, out.URIs, err = parseSANExtension(extension.Value, &nfe) + if err != nil { + return nil, err + } + } + } + + return out, nil +} + +// CheckSignature reports whether the signature on c is valid. +func (c *CertificateRequest) CheckSignature() error { + return checkSignature(c.SignatureAlgorithm, c.RawTBSCertificateRequest, c.Signature, c.PublicKey) +} diff --git a/vendor/github.com/google/certificate-transparency-go/x509/x509_test_import.go b/vendor/github.com/google/certificate-transparency-go/x509/x509_test_import.go new file mode 100644 index 00000000000..5a7e19fe14e --- /dev/null +++ b/vendor/github.com/google/certificate-transparency-go/x509/x509_test_import.go @@ -0,0 +1,55 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build ignore + +// This file is run by the x509 tests to ensure that a program with minimal +// imports can sign certificates without errors resulting from missing hash +// functions. +package main + +import ( + "crypto/rand" + // START CT CHANGES + "github.com/google/certificate-transparency-go/x509" + "github.com/google/certificate-transparency-go/x509/pkix" + // END CT CHANGES + "encoding/pem" + "math/big" + "time" +) + +func main() { + block, _ := pem.Decode([]byte(pemPrivateKey)) + rsaPriv, err := x509.ParsePKCS1PrivateKey(block.Bytes) + if err != nil { + panic("Failed to parse private key: " + err.Error()) + } + + template := x509.Certificate{ + SerialNumber: big.NewInt(1), + Subject: pkix.Name{ + CommonName: "test", + Organization: []string{"Σ Acme Co"}, + }, + NotBefore: time.Unix(1000, 0), + NotAfter: time.Unix(100000, 0), + KeyUsage: x509.KeyUsageCertSign, + } + + if _, err = x509.CreateCertificate(rand.Reader, &template, &template, &rsaPriv.PublicKey, rsaPriv); err != nil { + panic("failed to create certificate with basic imports: " + err.Error()) + } +} + +var pemPrivateKey = `-----BEGIN RSA PRIVATE KEY----- +MIIBOgIBAAJBALKZD0nEffqM1ACuak0bijtqE2QrI/KLADv7l3kK3ppMyCuLKoF0 +fd7Ai2KW5ToIwzFofvJcS/STa6HA5gQenRUCAwEAAQJBAIq9amn00aS0h/CrjXqu +/ThglAXJmZhOMPVn4eiu7/ROixi9sex436MaVeMqSNf7Ex9a8fRNfWss7Sqd9eWu +RTUCIQDasvGASLqmjeffBNLTXV2A5g4t+kLVCpsEIZAycV5GswIhANEPLmax0ME/ +EO+ZJ79TJKN5yiGBRsv5yvx5UiHxajEXAiAhAol5N4EUyq6I9w1rYdhPMGpLfk7A +IU2snfRJ6Nq2CQIgFrPsWRCkV+gOYcajD17rEqmuLrdIRexpg8N1DOSXoJ8CIGlS +tAboUGBxTDq3ZroNism3DaMIbKPyYrAqhKov1h5V +-----END RSA PRIVATE KEY----- +` diff --git a/vendor/github.com/google/certificate-transparency/go/BUILD b/vendor/github.com/google/certificate-transparency/go/BUILD deleted file mode 100644 index 352a5637920..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/BUILD +++ /dev/null @@ -1,32 +0,0 @@ -load("@io_bazel_rules_go//go:def.bzl", "go_library") - -go_library( - name = "go_default_library", - srcs = [ - "serialization.go", - "signatures.go", - "types.go", - ], - importpath = "github.com/google/certificate-transparency/go", - visibility = ["//visibility:public"], - deps = ["//vendor/github.com/google/certificate-transparency/go/x509:go_default_library"], -) - -filegroup( - name = "package-srcs", - srcs = glob(["**"]), - tags = ["automanaged"], - visibility = ["//visibility:private"], -) - -filegroup( - name = "all-srcs", - srcs = [ - ":package-srcs", - "//vendor/github.com/google/certificate-transparency/go/asn1:all-srcs", - "//vendor/github.com/google/certificate-transparency/go/client:all-srcs", - "//vendor/github.com/google/certificate-transparency/go/x509:all-srcs", - ], - tags = ["automanaged"], - visibility = ["//visibility:public"], -) diff --git a/vendor/github.com/google/certificate-transparency/go/README.md b/vendor/github.com/google/certificate-transparency/go/README.md deleted file mode 100644 index 82c5d1b3afd..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/README.md +++ /dev/null @@ -1,25 +0,0 @@ -This is the really early beginnings of a certificate transparency log -client written in Go, along with a log scanner tool. - -You'll need go v1.1 or higher to compile. - -# Installation - -This go code must be imported into your go workspace before you can -use it, which can be done with: - - go get github.com/google/certificate-transparency/go/client - go get github.com/google/certificate-transparency/go/scanner - etc. - -# Building the binaries - -To compile the log scanner run: - - go build github.com/google/certificate-transparency/go/scanner/main/scanner.go - -# Contributing - -When sending pull requests, please ensure that everything's been run -through ```gofmt``` beforehand so we can keep everything nice and -tidy. diff --git a/vendor/github.com/google/certificate-transparency/go/asn1/marshal.go b/vendor/github.com/google/certificate-transparency/go/asn1/marshal.go deleted file mode 100755 index ed17e41a55c..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/asn1/marshal.go +++ /dev/null @@ -1,581 +0,0 @@ -// Copyright 2009 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package asn1 - -import ( - "bytes" - "errors" - "fmt" - "io" - "math/big" - "reflect" - "time" - "unicode/utf8" -) - -// A forkableWriter is an in-memory buffer that can be -// 'forked' to create new forkableWriters that bracket the -// original. After -// pre, post := w.fork(); -// the overall sequence of bytes represented is logically w+pre+post. -type forkableWriter struct { - *bytes.Buffer - pre, post *forkableWriter -} - -func newForkableWriter() *forkableWriter { - return &forkableWriter{new(bytes.Buffer), nil, nil} -} - -func (f *forkableWriter) fork() (pre, post *forkableWriter) { - if f.pre != nil || f.post != nil { - panic("have already forked") - } - f.pre = newForkableWriter() - f.post = newForkableWriter() - return f.pre, f.post -} - -func (f *forkableWriter) Len() (l int) { - l += f.Buffer.Len() - if f.pre != nil { - l += f.pre.Len() - } - if f.post != nil { - l += f.post.Len() - } - return -} - -func (f *forkableWriter) writeTo(out io.Writer) (n int, err error) { - n, err = out.Write(f.Bytes()) - if err != nil { - return - } - - var nn int - - if f.pre != nil { - nn, err = f.pre.writeTo(out) - n += nn - if err != nil { - return - } - } - - if f.post != nil { - nn, err = f.post.writeTo(out) - n += nn - } - return -} - -func marshalBase128Int(out *forkableWriter, n int64) (err error) { - if n == 0 { - err = out.WriteByte(0) - return - } - - l := 0 - for i := n; i > 0; i >>= 7 { - l++ - } - - for i := l - 1; i >= 0; i-- { - o := byte(n >> uint(i*7)) - o &= 0x7f - if i != 0 { - o |= 0x80 - } - err = out.WriteByte(o) - if err != nil { - return - } - } - - return nil -} - -func marshalInt64(out *forkableWriter, i int64) (err error) { - n := int64Length(i) - - for ; n > 0; n-- { - err = out.WriteByte(byte(i >> uint((n-1)*8))) - if err != nil { - return - } - } - - return nil -} - -func int64Length(i int64) (numBytes int) { - numBytes = 1 - - for i > 127 { - numBytes++ - i >>= 8 - } - - for i < -128 { - numBytes++ - i >>= 8 - } - - return -} - -func marshalBigInt(out *forkableWriter, n *big.Int) (err error) { - if n.Sign() < 0 { - // A negative number has to be converted to two's-complement - // form. So we'll subtract 1 and invert. If the - // most-significant-bit isn't set then we'll need to pad the - // beginning with 0xff in order to keep the number negative. - nMinus1 := new(big.Int).Neg(n) - nMinus1.Sub(nMinus1, bigOne) - bytes := nMinus1.Bytes() - for i := range bytes { - bytes[i] ^= 0xff - } - if len(bytes) == 0 || bytes[0]&0x80 == 0 { - err = out.WriteByte(0xff) - if err != nil { - return - } - } - _, err = out.Write(bytes) - } else if n.Sign() == 0 { - // Zero is written as a single 0 zero rather than no bytes. - err = out.WriteByte(0x00) - } else { - bytes := n.Bytes() - if len(bytes) > 0 && bytes[0]&0x80 != 0 { - // We'll have to pad this with 0x00 in order to stop it - // looking like a negative number. - err = out.WriteByte(0) - if err != nil { - return - } - } - _, err = out.Write(bytes) - } - return -} - -func marshalLength(out *forkableWriter, i int) (err error) { - n := lengthLength(i) - - for ; n > 0; n-- { - err = out.WriteByte(byte(i >> uint((n-1)*8))) - if err != nil { - return - } - } - - return nil -} - -func lengthLength(i int) (numBytes int) { - numBytes = 1 - for i > 255 { - numBytes++ - i >>= 8 - } - return -} - -func marshalTagAndLength(out *forkableWriter, t tagAndLength) (err error) { - b := uint8(t.class) << 6 - if t.isCompound { - b |= 0x20 - } - if t.tag >= 31 { - b |= 0x1f - err = out.WriteByte(b) - if err != nil { - return - } - err = marshalBase128Int(out, int64(t.tag)) - if err != nil { - return - } - } else { - b |= uint8(t.tag) - err = out.WriteByte(b) - if err != nil { - return - } - } - - if t.length >= 128 { - l := lengthLength(t.length) - err = out.WriteByte(0x80 | byte(l)) - if err != nil { - return - } - err = marshalLength(out, t.length) - if err != nil { - return - } - } else { - err = out.WriteByte(byte(t.length)) - if err != nil { - return - } - } - - return nil -} - -func marshalBitString(out *forkableWriter, b BitString) (err error) { - paddingBits := byte((8 - b.BitLength%8) % 8) - err = out.WriteByte(paddingBits) - if err != nil { - return - } - _, err = out.Write(b.Bytes) - return -} - -func marshalObjectIdentifier(out *forkableWriter, oid []int) (err error) { - if len(oid) < 2 || oid[0] > 2 || (oid[0] < 2 && oid[1] >= 40) { - return StructuralError{"invalid object identifier"} - } - - err = marshalBase128Int(out, int64(oid[0]*40+oid[1])) - if err != nil { - return - } - for i := 2; i < len(oid); i++ { - err = marshalBase128Int(out, int64(oid[i])) - if err != nil { - return - } - } - - return -} - -func marshalPrintableString(out *forkableWriter, s string) (err error) { - b := []byte(s) - for _, c := range b { - if !isPrintable(c) { - return StructuralError{"PrintableString contains invalid character"} - } - } - - _, err = out.Write(b) - return -} - -func marshalIA5String(out *forkableWriter, s string) (err error) { - b := []byte(s) - for _, c := range b { - if c > 127 { - return StructuralError{"IA5String contains invalid character"} - } - } - - _, err = out.Write(b) - return -} - -func marshalUTF8String(out *forkableWriter, s string) (err error) { - _, err = out.Write([]byte(s)) - return -} - -func marshalTwoDigits(out *forkableWriter, v int) (err error) { - err = out.WriteByte(byte('0' + (v/10)%10)) - if err != nil { - return - } - return out.WriteByte(byte('0' + v%10)) -} - -func marshalUTCTime(out *forkableWriter, t time.Time) (err error) { - year, month, day := t.Date() - - switch { - case 1950 <= year && year < 2000: - err = marshalTwoDigits(out, int(year-1900)) - case 2000 <= year && year < 2050: - err = marshalTwoDigits(out, int(year-2000)) - default: - return StructuralError{"cannot represent time as UTCTime"} - } - if err != nil { - return - } - - err = marshalTwoDigits(out, int(month)) - if err != nil { - return - } - - err = marshalTwoDigits(out, day) - if err != nil { - return - } - - hour, min, sec := t.Clock() - - err = marshalTwoDigits(out, hour) - if err != nil { - return - } - - err = marshalTwoDigits(out, min) - if err != nil { - return - } - - err = marshalTwoDigits(out, sec) - if err != nil { - return - } - - _, offset := t.Zone() - - switch { - case offset/60 == 0: - err = out.WriteByte('Z') - return - case offset > 0: - err = out.WriteByte('+') - case offset < 0: - err = out.WriteByte('-') - } - - if err != nil { - return - } - - offsetMinutes := offset / 60 - if offsetMinutes < 0 { - offsetMinutes = -offsetMinutes - } - - err = marshalTwoDigits(out, offsetMinutes/60) - if err != nil { - return - } - - err = marshalTwoDigits(out, offsetMinutes%60) - return -} - -func stripTagAndLength(in []byte) []byte { - _, offset, err := parseTagAndLength(in, 0) - if err != nil { - return in - } - return in[offset:] -} - -func marshalBody(out *forkableWriter, value reflect.Value, params fieldParameters) (err error) { - switch value.Type() { - case timeType: - return marshalUTCTime(out, value.Interface().(time.Time)) - case bitStringType: - return marshalBitString(out, value.Interface().(BitString)) - case objectIdentifierType: - return marshalObjectIdentifier(out, value.Interface().(ObjectIdentifier)) - case bigIntType: - return marshalBigInt(out, value.Interface().(*big.Int)) - } - - switch v := value; v.Kind() { - case reflect.Bool: - if v.Bool() { - return out.WriteByte(255) - } else { - return out.WriteByte(0) - } - case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: - return marshalInt64(out, int64(v.Int())) - case reflect.Struct: - t := v.Type() - - startingField := 0 - - // If the first element of the structure is a non-empty - // RawContents, then we don't bother serializing the rest. - if t.NumField() > 0 && t.Field(0).Type == rawContentsType { - s := v.Field(0) - if s.Len() > 0 { - bytes := make([]byte, s.Len()) - for i := 0; i < s.Len(); i++ { - bytes[i] = uint8(s.Index(i).Uint()) - } - /* The RawContents will contain the tag and - * length fields but we'll also be writing - * those ourselves, so we strip them out of - * bytes */ - _, err = out.Write(stripTagAndLength(bytes)) - return - } else { - startingField = 1 - } - } - - for i := startingField; i < t.NumField(); i++ { - var pre *forkableWriter - pre, out = out.fork() - err = marshalField(pre, v.Field(i), parseFieldParameters(t.Field(i).Tag.Get("asn1"))) - if err != nil { - return - } - } - return - case reflect.Slice: - sliceType := v.Type() - if sliceType.Elem().Kind() == reflect.Uint8 { - bytes := make([]byte, v.Len()) - for i := 0; i < v.Len(); i++ { - bytes[i] = uint8(v.Index(i).Uint()) - } - _, err = out.Write(bytes) - return - } - - var fp fieldParameters - for i := 0; i < v.Len(); i++ { - var pre *forkableWriter - pre, out = out.fork() - err = marshalField(pre, v.Index(i), fp) - if err != nil { - return - } - } - return - case reflect.String: - switch params.stringType { - case tagIA5String: - return marshalIA5String(out, v.String()) - case tagPrintableString: - return marshalPrintableString(out, v.String()) - default: - return marshalUTF8String(out, v.String()) - } - } - - return StructuralError{"unknown Go type"} -} - -func marshalField(out *forkableWriter, v reflect.Value, params fieldParameters) (err error) { - // If the field is an interface{} then recurse into it. - if v.Kind() == reflect.Interface && v.Type().NumMethod() == 0 { - return marshalField(out, v.Elem(), params) - } - - if v.Kind() == reflect.Slice && v.Len() == 0 && params.omitEmpty { - return - } - - if params.optional && reflect.DeepEqual(v.Interface(), reflect.Zero(v.Type()).Interface()) { - return - } - - if v.Type() == rawValueType { - rv := v.Interface().(RawValue) - if len(rv.FullBytes) != 0 { - _, err = out.Write(rv.FullBytes) - } else { - err = marshalTagAndLength(out, tagAndLength{rv.Class, rv.Tag, len(rv.Bytes), rv.IsCompound}) - if err != nil { - return - } - _, err = out.Write(rv.Bytes) - } - return - } - - tag, isCompound, ok := getUniversalType(v.Type()) - if !ok { - err = StructuralError{fmt.Sprintf("unknown Go type: %v", v.Type())} - return - } - class := classUniversal - - if params.stringType != 0 && tag != tagPrintableString { - return StructuralError{"explicit string type given to non-string member"} - } - - if tag == tagPrintableString { - if params.stringType == 0 { - // This is a string without an explicit string type. We'll use - // a PrintableString if the character set in the string is - // sufficiently limited, otherwise we'll use a UTF8String. - for _, r := range v.String() { - if r >= utf8.RuneSelf || !isPrintable(byte(r)) { - if !utf8.ValidString(v.String()) { - return errors.New("asn1: string not valid UTF-8") - } - tag = tagUTF8String - break - } - } - } else { - tag = params.stringType - } - } - - if params.set { - if tag != tagSequence { - return StructuralError{"non sequence tagged as set"} - } - tag = tagSet - } - - tags, body := out.fork() - - err = marshalBody(body, v, params) - if err != nil { - return - } - - bodyLen := body.Len() - - var explicitTag *forkableWriter - if params.explicit { - explicitTag, tags = tags.fork() - } - - if !params.explicit && params.tag != nil { - // implicit tag. - tag = *params.tag - class = classContextSpecific - } - - err = marshalTagAndLength(tags, tagAndLength{class, tag, bodyLen, isCompound}) - if err != nil { - return - } - - if params.explicit { - err = marshalTagAndLength(explicitTag, tagAndLength{ - class: classContextSpecific, - tag: *params.tag, - length: bodyLen + tags.Len(), - isCompound: true, - }) - } - - return nil -} - -// Marshal returns the ASN.1 encoding of val. -func Marshal(val interface{}) ([]byte, error) { - var out bytes.Buffer - v := reflect.ValueOf(val) - f := newForkableWriter() - err := marshalField(f, v, fieldParameters{}) - if err != nil { - return nil, err - } - _, err = f.writeTo(&out) - return out.Bytes(), nil -} diff --git a/vendor/github.com/google/certificate-transparency/go/client/logclient.go b/vendor/github.com/google/certificate-transparency/go/client/logclient.go deleted file mode 100644 index e9c7f216806..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/client/logclient.go +++ /dev/null @@ -1,358 +0,0 @@ -// Package client is a CT log client implementation and contains types and code -// for interacting with RFC6962-compliant CT Log instances. -// See http://tools.ietf.org/html/rfc6962 for details -package client - -import ( - "bytes" - "crypto/sha256" - "encoding/base64" - "encoding/json" - "errors" - "fmt" - "io/ioutil" - "log" - "net/http" - "strconv" - "time" - - "github.com/google/certificate-transparency/go" - "github.com/mreiferson/go-httpclient" - "golang.org/x/net/context" -) - -// URI paths for CT Log endpoints -const ( - AddChainPath = "/ct/v1/add-chain" - AddPreChainPath = "/ct/v1/add-pre-chain" - GetSTHPath = "/ct/v1/get-sth" - GetEntriesPath = "/ct/v1/get-entries" -) - -// LogClient represents a client for a given CT Log instance -type LogClient struct { - uri string // the base URI of the log. e.g. http://ct.googleapis/pilot - httpClient *http.Client // used to interact with the log via HTTP -} - -////////////////////////////////////////////////////////////////////////////////// -// JSON structures follow. -// These represent the structures returned by the CT Log server. -////////////////////////////////////////////////////////////////////////////////// - -// addChainRequest represents the JSON request body sent to the add-chain CT -// method. -type addChainRequest struct { - Chain []string `json:"chain"` -} - -// addChainResponse represents the JSON response to the add-chain CT method. -// An SCT represents a Log's promise to integrate a [pre-]certificate into the -// log within a defined period of time. -type addChainResponse struct { - SCTVersion ct.Version `json:"sct_version"` // SCT structure version - ID string `json:"id"` // Log ID - Timestamp uint64 `json:"timestamp"` // Timestamp of issuance - Extensions string `json:"extensions"` // Holder for any CT extensions - Signature string `json:"signature"` // Log signature for this SCT -} - -// getSTHResponse respresents the JSON response to the get-sth CT method -type getSTHResponse struct { - TreeSize uint64 `json:"tree_size"` // Number of certs in the current tree - Timestamp uint64 `json:"timestamp"` // Time that the tree was created - SHA256RootHash string `json:"sha256_root_hash"` // Root hash of the tree - TreeHeadSignature string `json:"tree_head_signature"` // Log signature for this STH -} - -// base64LeafEntry respresents a Base64 encoded leaf entry -type base64LeafEntry struct { - LeafInput string `json:"leaf_input"` - ExtraData string `json:"extra_data"` -} - -// getEntriesReponse respresents the JSON response to the CT get-entries method -type getEntriesResponse struct { - Entries []base64LeafEntry `json:"entries"` // the list of returned entries -} - -// getConsistencyProofResponse represents the JSON response to the CT get-consistency-proof method -type getConsistencyProofResponse struct { - Consistency []string `json:"consistency"` -} - -// getAuditProofResponse represents the JSON response to the CT get-audit-proof method -type getAuditProofResponse struct { - Hash []string `json:"hash"` // the hashes which make up the proof - TreeSize uint64 `json:"tree_size"` // the tree size against which this proof is constructed -} - -// getAcceptedRootsResponse represents the JSON response to the CT get-roots method. -type getAcceptedRootsResponse struct { - Certificates []string `json:"certificates"` -} - -// getEntryAndProodReponse represents the JSON response to the CT get-entry-and-proof method -type getEntryAndProofResponse struct { - LeafInput string `json:"leaf_input"` // the entry itself - ExtraData string `json:"extra_data"` // any chain provided when the entry was added to the log - AuditPath []string `json:"audit_path"` // the corresponding proof -} - -// New constructs a new LogClient instance. -// |uri| is the base URI of the CT log instance to interact with, e.g. -// http://ct.googleapis.com/pilot -func New(uri string) *LogClient { - var c LogClient - c.uri = uri - transport := &httpclient.Transport{ - ConnectTimeout: 10 * time.Second, - RequestTimeout: 30 * time.Second, - ResponseHeaderTimeout: 30 * time.Second, - MaxIdleConnsPerHost: 10, - DisableKeepAlives: false, - } - c.httpClient = &http.Client{Transport: transport} - return &c -} - -// Makes a HTTP call to |uri|, and attempts to parse the response as a JSON -// representation of the structure in |res|. -// Returns a non-nil |error| if there was a problem. -func (c *LogClient) fetchAndParse(uri string, res interface{}) error { - req, err := http.NewRequest("GET", uri, nil) - if err != nil { - return err - } - req.Header.Set("Keep-Alive", "timeout=15, max=100") - resp, err := c.httpClient.Do(req) - var body []byte - if resp != nil { - body, err = ioutil.ReadAll(resp.Body) - resp.Body.Close() - if err != nil { - return err - } - } - if err != nil { - return err - } - if err = json.Unmarshal(body, &res); err != nil { - return err - } - return nil -} - -// Makes a HTTP POST call to |uri|, and attempts to parse the response as a JSON -// representation of the structure in |res|. -// Returns a non-nil |error| if there was a problem. -func (c *LogClient) postAndParse(uri string, req interface{}, res interface{}) (*http.Response, string, error) { - postBody, err := json.Marshal(req) - if err != nil { - return nil, "", err - } - httpReq, err := http.NewRequest("POST", uri, bytes.NewReader(postBody)) - if err != nil { - return nil, "", err - } - httpReq.Header.Set("Keep-Alive", "timeout=15, max=100") - httpReq.Header.Set("Content-Type", "application/json") - resp, err := c.httpClient.Do(httpReq) - // Read all of the body, if there is one, so that the http.Client can do - // Keep-Alive: - var body []byte - if resp != nil { - body, err = ioutil.ReadAll(resp.Body) - resp.Body.Close() - } - if err != nil { - return resp, string(body), err - } - if resp.StatusCode == 200 { - if err != nil { - return resp, string(body), err - } - if err = json.Unmarshal(body, &res); err != nil { - return resp, string(body), err - } - } - return resp, string(body), nil -} - -func backoffForRetry(ctx context.Context, d time.Duration) error { - backoffTimer := time.NewTimer(d) - if ctx != nil { - select { - case <-ctx.Done(): - return ctx.Err() - case <-backoffTimer.C: - } - } else { - <-backoffTimer.C - } - return nil -} - -// Attempts to add |chain| to the log, using the api end-point specified by -// |path|. If provided context expires before submission is complete an -// error will be returned. -func (c *LogClient) addChainWithRetry(ctx context.Context, path string, chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) { - var resp addChainResponse - var req addChainRequest - for _, link := range chain { - req.Chain = append(req.Chain, base64.StdEncoding.EncodeToString(link)) - } - httpStatus := "Unknown" - backoffSeconds := 0 - done := false - for !done { - if backoffSeconds > 0 { - log.Printf("Got %s, backing-off %d seconds", httpStatus, backoffSeconds) - } - err := backoffForRetry(ctx, time.Second*time.Duration(backoffSeconds)) - if err != nil { - return nil, err - } - if backoffSeconds > 0 { - backoffSeconds = 0 - } - httpResp, errorBody, err := c.postAndParse(c.uri+path, &req, &resp) - if err != nil { - backoffSeconds = 10 - continue - } - switch { - case httpResp.StatusCode == 200: - done = true - case httpResp.StatusCode == 408: - // request timeout, retry immediately - case httpResp.StatusCode == 503: - // Retry - backoffSeconds = 10 - if retryAfter := httpResp.Header.Get("Retry-After"); retryAfter != "" { - if seconds, err := strconv.Atoi(retryAfter); err == nil { - backoffSeconds = seconds - } - } - default: - return nil, fmt.Errorf("got HTTP Status %s: %s", httpResp.Status, errorBody) - } - httpStatus = httpResp.Status - } - - rawLogID, err := base64.StdEncoding.DecodeString(resp.ID) - if err != nil { - return nil, err - } - rawSignature, err := base64.StdEncoding.DecodeString(resp.Signature) - if err != nil { - return nil, err - } - ds, err := ct.UnmarshalDigitallySigned(bytes.NewReader(rawSignature)) - if err != nil { - return nil, err - } - var logID ct.SHA256Hash - copy(logID[:], rawLogID) - return &ct.SignedCertificateTimestamp{ - SCTVersion: resp.SCTVersion, - LogID: logID, - Timestamp: resp.Timestamp, - Extensions: ct.CTExtensions(resp.Extensions), - Signature: *ds}, nil -} - -// AddChain adds the (DER represented) X509 |chain| to the log. -func (c *LogClient) AddChain(chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) { - return c.addChainWithRetry(nil, AddChainPath, chain) -} - -// AddPreChain adds the (DER represented) Precertificate |chain| to the log. -func (c *LogClient) AddPreChain(chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) { - return c.addChainWithRetry(nil, AddPreChainPath, chain) -} - -// AddChainWithContext adds the (DER represented) X509 |chain| to the log and -// fails if the provided context expires before the chain is submitted. -func (c *LogClient) AddChainWithContext(ctx context.Context, chain []ct.ASN1Cert) (*ct.SignedCertificateTimestamp, error) { - return c.addChainWithRetry(ctx, AddChainPath, chain) -} - -// GetSTH retrieves the current STH from the log. -// Returns a populated SignedTreeHead, or a non-nil error. -func (c *LogClient) GetSTH() (sth *ct.SignedTreeHead, err error) { - var resp getSTHResponse - if err = c.fetchAndParse(c.uri+GetSTHPath, &resp); err != nil { - return - } - sth = &ct.SignedTreeHead{ - TreeSize: resp.TreeSize, - Timestamp: resp.Timestamp, - } - - rawRootHash, err := base64.StdEncoding.DecodeString(resp.SHA256RootHash) - if err != nil { - return nil, fmt.Errorf("invalid base64 encoding in sha256_root_hash: %v", err) - } - if len(rawRootHash) != sha256.Size { - return nil, fmt.Errorf("sha256_root_hash is invalid length, expected %d got %d", sha256.Size, len(rawRootHash)) - } - copy(sth.SHA256RootHash[:], rawRootHash) - - rawSignature, err := base64.StdEncoding.DecodeString(resp.TreeHeadSignature) - if err != nil { - return nil, errors.New("invalid base64 encoding in tree_head_signature") - } - ds, err := ct.UnmarshalDigitallySigned(bytes.NewReader(rawSignature)) - if err != nil { - return nil, err - } - // TODO(alcutter): Verify signature - sth.TreeHeadSignature = *ds - return -} - -// GetEntries attempts to retrieve the entries in the sequence [|start|, |end|] from the CT -// log server. (see section 4.6.) -// Returns a slice of LeafInputs or a non-nil error. -func (c *LogClient) GetEntries(start, end int64) ([]ct.LogEntry, error) { - if end < 0 { - return nil, errors.New("end should be >= 0") - } - if end < start { - return nil, errors.New("start should be <= end") - } - var resp getEntriesResponse - err := c.fetchAndParse(fmt.Sprintf("%s%s?start=%d&end=%d", c.uri, GetEntriesPath, start, end), &resp) - if err != nil { - return nil, err - } - entries := make([]ct.LogEntry, len(resp.Entries)) - for index, entry := range resp.Entries { - leafBytes, err := base64.StdEncoding.DecodeString(entry.LeafInput) - leaf, err := ct.ReadMerkleTreeLeaf(bytes.NewBuffer(leafBytes)) - if err != nil { - return nil, err - } - entries[index].Leaf = *leaf - chainBytes, err := base64.StdEncoding.DecodeString(entry.ExtraData) - - var chain []ct.ASN1Cert - switch leaf.TimestampedEntry.EntryType { - case ct.X509LogEntryType: - chain, err = ct.UnmarshalX509ChainArray(chainBytes) - - case ct.PrecertLogEntryType: - chain, err = ct.UnmarshalPrecertChainArray(chainBytes) - - default: - return nil, fmt.Errorf("saw unknown entry type: %v", leaf.TimestampedEntry.EntryType) - } - if err != nil { - return nil, err - } - entries[index].Chain = chain - entries[index].Index = start + int64(index) - } - return entries, nil -} diff --git a/vendor/github.com/google/certificate-transparency/go/serialization.go b/vendor/github.com/google/certificate-transparency/go/serialization.go deleted file mode 100644 index aab3a3f20c8..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/serialization.go +++ /dev/null @@ -1,512 +0,0 @@ -package ct - -import ( - "bytes" - "container/list" - "crypto" - "encoding/binary" - "errors" - "fmt" - "io" -) - -// Variable size structure prefix-header byte lengths -const ( - CertificateLengthBytes = 3 - PreCertificateLengthBytes = 3 - ExtensionsLengthBytes = 2 - CertificateChainLengthBytes = 3 - SignatureLengthBytes = 2 -) - -// Max lengths -const ( - MaxCertificateLength = (1 << 24) - 1 - MaxExtensionsLength = (1 << 16) - 1 -) - -func writeUint(w io.Writer, value uint64, numBytes int) error { - buf := make([]uint8, numBytes) - for i := 0; i < numBytes; i++ { - buf[numBytes-i-1] = uint8(value & 0xff) - value >>= 8 - } - if value != 0 { - return errors.New("numBytes was insufficiently large to represent value") - } - if _, err := w.Write(buf); err != nil { - return err - } - return nil -} - -func writeVarBytes(w io.Writer, value []byte, numLenBytes int) error { - if err := writeUint(w, uint64(len(value)), numLenBytes); err != nil { - return err - } - if _, err := w.Write(value); err != nil { - return err - } - return nil -} - -func readUint(r io.Reader, numBytes int) (uint64, error) { - var l uint64 - for i := 0; i < numBytes; i++ { - l <<= 8 - var t uint8 - if err := binary.Read(r, binary.BigEndian, &t); err != nil { - return 0, err - } - l |= uint64(t) - } - return l, nil -} - -// Reads a variable length array of bytes from |r|. |numLenBytes| specifies the -// number of (BigEndian) prefix-bytes which contain the length of the actual -// array data bytes that follow. -// Allocates an array to hold the contents and returns a slice view into it if -// the read was successful, or an error otherwise. -func readVarBytes(r io.Reader, numLenBytes int) ([]byte, error) { - switch { - case numLenBytes > 8: - return nil, fmt.Errorf("numLenBytes too large (%d)", numLenBytes) - case numLenBytes == 0: - return nil, errors.New("numLenBytes should be > 0") - } - l, err := readUint(r, numLenBytes) - if err != nil { - return nil, err - } - data := make([]byte, l) - n, err := r.Read(data) - if err != nil { - return nil, err - } - if n != int(l) { - return nil, fmt.Errorf("short read: expected %d but got %d", l, n) - } - return data, nil -} - -// Reads a list of ASN1Cert types from |r| -func readASN1CertList(r io.Reader, totalLenBytes int, elementLenBytes int) ([]ASN1Cert, error) { - listBytes, err := readVarBytes(r, totalLenBytes) - if err != nil { - return []ASN1Cert{}, err - } - list := list.New() - listReader := bytes.NewReader(listBytes) - var entry []byte - for err == nil { - entry, err = readVarBytes(listReader, elementLenBytes) - if err != nil { - if err != io.EOF { - return []ASN1Cert{}, err - } - } else { - list.PushBack(entry) - } - } - ret := make([]ASN1Cert, list.Len()) - i := 0 - for e := list.Front(); e != nil; e = e.Next() { - ret[i] = e.Value.([]byte) - i++ - } - return ret, nil -} - -// ReadTimestampedEntryInto parses the byte-stream representation of a -// TimestampedEntry from |r| and populates the struct |t| with the data. See -// RFC section 3.4 for details on the format. -// Returns a non-nil error if there was a problem. -func ReadTimestampedEntryInto(r io.Reader, t *TimestampedEntry) error { - var err error - if err = binary.Read(r, binary.BigEndian, &t.Timestamp); err != nil { - return err - } - if err = binary.Read(r, binary.BigEndian, &t.EntryType); err != nil { - return err - } - switch t.EntryType { - case X509LogEntryType: - if t.X509Entry, err = readVarBytes(r, CertificateLengthBytes); err != nil { - return err - } - case PrecertLogEntryType: - if err := binary.Read(r, binary.BigEndian, &t.PrecertEntry.IssuerKeyHash); err != nil { - return err - } - if t.PrecertEntry.TBSCertificate, err = readVarBytes(r, PreCertificateLengthBytes); err != nil { - return err - } - default: - return fmt.Errorf("unknown EntryType: %d", t.EntryType) - } - t.Extensions, err = readVarBytes(r, ExtensionsLengthBytes) - return nil -} - -// ReadMerkleTreeLeaf parses the byte-stream representation of a MerkleTreeLeaf -// and returns a pointer to a new MerkleTreeLeaf structure containing the -// parsed data. -// See RFC section 3.4 for details on the format. -// Returns a pointer to a new MerkleTreeLeaf or non-nil error if there was a -// problem -func ReadMerkleTreeLeaf(r io.Reader) (*MerkleTreeLeaf, error) { - var m MerkleTreeLeaf - if err := binary.Read(r, binary.BigEndian, &m.Version); err != nil { - return nil, err - } - if m.Version != V1 { - return nil, fmt.Errorf("unknown Version %d", m.Version) - } - if err := binary.Read(r, binary.BigEndian, &m.LeafType); err != nil { - return nil, err - } - if m.LeafType != TimestampedEntryLeafType { - return nil, fmt.Errorf("unknown LeafType %d", m.LeafType) - } - if err := ReadTimestampedEntryInto(r, &m.TimestampedEntry); err != nil { - return nil, err - } - return &m, nil -} - -// UnmarshalX509ChainArray unmarshalls the contents of the "chain:" entry in a -// GetEntries response in the case where the entry refers to an X509 leaf. -func UnmarshalX509ChainArray(b []byte) ([]ASN1Cert, error) { - return readASN1CertList(bytes.NewReader(b), CertificateChainLengthBytes, CertificateLengthBytes) -} - -// UnmarshalPrecertChainArray unmarshalls the contents of the "chain:" entry in -// a GetEntries response in the case where the entry refers to a Precertificate -// leaf. -func UnmarshalPrecertChainArray(b []byte) ([]ASN1Cert, error) { - var chain []ASN1Cert - - reader := bytes.NewReader(b) - // read the pre-cert entry: - precert, err := readVarBytes(reader, CertificateLengthBytes) - if err != nil { - return chain, err - } - chain = append(chain, precert) - // and then read and return the chain up to the root: - remainingChain, err := readASN1CertList(reader, CertificateChainLengthBytes, CertificateLengthBytes) - if err != nil { - return chain, err - } - chain = append(chain, remainingChain...) - return chain, nil -} - -// UnmarshalDigitallySigned reconstructs a DigitallySigned structure from a Reader -func UnmarshalDigitallySigned(r io.Reader) (*DigitallySigned, error) { - var h byte - if err := binary.Read(r, binary.BigEndian, &h); err != nil { - return nil, fmt.Errorf("failed to read HashAlgorithm: %v", err) - } - - var s byte - if err := binary.Read(r, binary.BigEndian, &s); err != nil { - return nil, fmt.Errorf("failed to read SignatureAlgorithm: %v", err) - } - - sig, err := readVarBytes(r, SignatureLengthBytes) - if err != nil { - return nil, fmt.Errorf("failed to read Signature bytes: %v", err) - } - - return &DigitallySigned{ - HashAlgorithm: HashAlgorithm(h), - SignatureAlgorithm: SignatureAlgorithm(s), - Signature: sig, - }, nil -} - -func marshalDigitallySignedHere(ds DigitallySigned, here []byte) ([]byte, error) { - sigLen := len(ds.Signature) - dsOutLen := 2 + SignatureLengthBytes + sigLen - if here == nil { - here = make([]byte, dsOutLen) - } - if len(here) < dsOutLen { - return nil, ErrNotEnoughBuffer - } - here = here[0:dsOutLen] - - here[0] = byte(ds.HashAlgorithm) - here[1] = byte(ds.SignatureAlgorithm) - binary.BigEndian.PutUint16(here[2:4], uint16(sigLen)) - copy(here[4:], ds.Signature) - - return here, nil -} - -// MarshalDigitallySigned marshalls a DigitallySigned structure into a byte array -func MarshalDigitallySigned(ds DigitallySigned) ([]byte, error) { - return marshalDigitallySignedHere(ds, nil) -} - -func checkCertificateFormat(cert ASN1Cert) error { - if len(cert) == 0 { - return errors.New("certificate is zero length") - } - if len(cert) > MaxCertificateLength { - return errors.New("certificate too large") - } - return nil -} - -func checkExtensionsFormat(ext CTExtensions) error { - if len(ext) > MaxExtensionsLength { - return errors.New("extensions too large") - } - return nil -} - -func serializeV1CertSCTSignatureInput(timestamp uint64, cert ASN1Cert, ext CTExtensions) ([]byte, error) { - if err := checkCertificateFormat(cert); err != nil { - return nil, err - } - if err := checkExtensionsFormat(ext); err != nil { - return nil, err - } - var buf bytes.Buffer - if err := binary.Write(&buf, binary.BigEndian, V1); err != nil { - return nil, err - } - if err := binary.Write(&buf, binary.BigEndian, CertificateTimestampSignatureType); err != nil { - return nil, err - } - if err := binary.Write(&buf, binary.BigEndian, timestamp); err != nil { - return nil, err - } - if err := binary.Write(&buf, binary.BigEndian, X509LogEntryType); err != nil { - return nil, err - } - if err := writeVarBytes(&buf, cert, CertificateLengthBytes); err != nil { - return nil, err - } - if err := writeVarBytes(&buf, ext, ExtensionsLengthBytes); err != nil { - return nil, err - } - return buf.Bytes(), nil -} - -func serializeV1PrecertSCTSignatureInput(timestamp uint64, issuerKeyHash [issuerKeyHashLength]byte, tbs []byte, ext CTExtensions) ([]byte, error) { - if err := checkCertificateFormat(tbs); err != nil { - return nil, err - } - if err := checkExtensionsFormat(ext); err != nil { - return nil, err - } - var buf bytes.Buffer - if err := binary.Write(&buf, binary.BigEndian, V1); err != nil { - return nil, err - } - if err := binary.Write(&buf, binary.BigEndian, CertificateTimestampSignatureType); err != nil { - return nil, err - } - if err := binary.Write(&buf, binary.BigEndian, timestamp); err != nil { - return nil, err - } - if err := binary.Write(&buf, binary.BigEndian, PrecertLogEntryType); err != nil { - return nil, err - } - if _, err := buf.Write(issuerKeyHash[:]); err != nil { - return nil, err - } - if err := writeVarBytes(&buf, tbs, CertificateLengthBytes); err != nil { - return nil, err - } - if err := writeVarBytes(&buf, ext, ExtensionsLengthBytes); err != nil { - return nil, err - } - return buf.Bytes(), nil -} - -func serializeV1SCTSignatureInput(sct SignedCertificateTimestamp, entry LogEntry) ([]byte, error) { - if sct.SCTVersion != V1 { - return nil, fmt.Errorf("unsupported SCT version, expected V1, but got %s", sct.SCTVersion) - } - if entry.Leaf.LeafType != TimestampedEntryLeafType { - return nil, fmt.Errorf("Unsupported leaf type %s", entry.Leaf.LeafType) - } - switch entry.Leaf.TimestampedEntry.EntryType { - case X509LogEntryType: - return serializeV1CertSCTSignatureInput(sct.Timestamp, entry.Leaf.TimestampedEntry.X509Entry, entry.Leaf.TimestampedEntry.Extensions) - case PrecertLogEntryType: - return serializeV1PrecertSCTSignatureInput(sct.Timestamp, entry.Leaf.TimestampedEntry.PrecertEntry.IssuerKeyHash, - entry.Leaf.TimestampedEntry.PrecertEntry.TBSCertificate, - entry.Leaf.TimestampedEntry.Extensions) - default: - return nil, fmt.Errorf("unknown TimestampedEntryLeafType %s", entry.Leaf.TimestampedEntry.EntryType) - } -} - -// SerializeSCTSignatureInput serializes the passed in sct and log entry into -// the correct format for signing. -func SerializeSCTSignatureInput(sct SignedCertificateTimestamp, entry LogEntry) ([]byte, error) { - switch sct.SCTVersion { - case V1: - return serializeV1SCTSignatureInput(sct, entry) - default: - return nil, fmt.Errorf("unknown SCT version %d", sct.SCTVersion) - } -} - -// SerializedLength will return the space (in bytes) -func (sct SignedCertificateTimestamp) SerializedLength() (int, error) { - switch sct.SCTVersion { - case V1: - extLen := len(sct.Extensions) - sigLen := len(sct.Signature.Signature) - return 1 + 32 + 8 + 2 + extLen + 2 + 2 + sigLen, nil - default: - return 0, ErrInvalidVersion - } -} - -func serializeV1SCTHere(sct SignedCertificateTimestamp, here []byte) ([]byte, error) { - if sct.SCTVersion != V1 { - return nil, ErrInvalidVersion - } - sctLen, err := sct.SerializedLength() - if err != nil { - return nil, err - } - if here == nil { - here = make([]byte, sctLen) - } - if len(here) < sctLen { - return nil, ErrNotEnoughBuffer - } - if err := checkExtensionsFormat(sct.Extensions); err != nil { - return nil, err - } - - here = here[0:sctLen] - - // Write Version - here[0] = byte(sct.SCTVersion) - - // Write LogID - copy(here[1:33], sct.LogID[:]) - - // Write Timestamp - binary.BigEndian.PutUint64(here[33:41], sct.Timestamp) - - // Write Extensions - extLen := len(sct.Extensions) - binary.BigEndian.PutUint16(here[41:43], uint16(extLen)) - n := 43 + extLen - copy(here[43:n], sct.Extensions) - - // Write Signature - _, err = marshalDigitallySignedHere(sct.Signature, here[n:]) - if err != nil { - return nil, err - } - return here, nil -} - -// SerializeSCTHere serializes the passed in sct into the format specified -// by RFC6962 section 3.2. -// If a bytes slice here is provided then it will attempt to serialize into the -// provided byte slice, ErrNotEnoughBuffer will be returned if the buffer is -// too small. -// If a nil byte slice is provided, a buffer for will be allocated for you -// The returned slice will be sliced to the correct length. -func SerializeSCTHere(sct SignedCertificateTimestamp, here []byte) ([]byte, error) { - switch sct.SCTVersion { - case V1: - return serializeV1SCTHere(sct, here) - default: - return nil, fmt.Errorf("unknown SCT version %d", sct.SCTVersion) - } -} - -// SerializeSCT serializes the passed in sct into the format specified -// by RFC6962 section 3.2 -// Equivalent to SerializeSCTHere(sct, nil) -func SerializeSCT(sct SignedCertificateTimestamp) ([]byte, error) { - return SerializeSCTHere(sct, nil) -} - -func deserializeSCTV1(r io.Reader, sct *SignedCertificateTimestamp) error { - if err := binary.Read(r, binary.BigEndian, &sct.LogID); err != nil { - return err - } - if err := binary.Read(r, binary.BigEndian, &sct.Timestamp); err != nil { - return err - } - ext, err := readVarBytes(r, ExtensionsLengthBytes) - if err != nil { - return err - } - sct.Extensions = ext - ds, err := UnmarshalDigitallySigned(r) - if err != nil { - return err - } - sct.Signature = *ds - return nil -} - -func DeserializeSCT(r io.Reader) (*SignedCertificateTimestamp, error) { - var sct SignedCertificateTimestamp - if err := binary.Read(r, binary.BigEndian, &sct.SCTVersion); err != nil { - return nil, err - } - switch sct.SCTVersion { - case V1: - return &sct, deserializeSCTV1(r, &sct) - default: - return nil, fmt.Errorf("unknown SCT version %d", sct.SCTVersion) - } -} - -func serializeV1STHSignatureInput(sth SignedTreeHead) ([]byte, error) { - if sth.Version != V1 { - return nil, fmt.Errorf("invalid STH version %d", sth.Version) - } - if sth.TreeSize < 0 { - return nil, fmt.Errorf("invalid tree size %d", sth.TreeSize) - } - if len(sth.SHA256RootHash) != crypto.SHA256.Size() { - return nil, fmt.Errorf("invalid TreeHash length, got %d expected %d", len(sth.SHA256RootHash), crypto.SHA256.Size()) - } - - var buf bytes.Buffer - if err := binary.Write(&buf, binary.BigEndian, V1); err != nil { - return nil, err - } - if err := binary.Write(&buf, binary.BigEndian, TreeHashSignatureType); err != nil { - return nil, err - } - if err := binary.Write(&buf, binary.BigEndian, sth.Timestamp); err != nil { - return nil, err - } - if err := binary.Write(&buf, binary.BigEndian, sth.TreeSize); err != nil { - return nil, err - } - if err := binary.Write(&buf, binary.BigEndian, sth.SHA256RootHash); err != nil { - return nil, err - } - return buf.Bytes(), nil -} - -// SerializeSTHSignatureInput serializes the passed in sth into the correct -// format for signing. -func SerializeSTHSignatureInput(sth SignedTreeHead) ([]byte, error) { - switch sth.Version { - case V1: - return serializeV1STHSignatureInput(sth) - default: - return nil, fmt.Errorf("unsupported STH version %d", sth.Version) - } -} diff --git a/vendor/github.com/google/certificate-transparency/go/types.go b/vendor/github.com/google/certificate-transparency/go/types.go deleted file mode 100644 index 8a63e98e60a..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/types.go +++ /dev/null @@ -1,363 +0,0 @@ -package ct - -import ( - "bytes" - "crypto/sha256" - "encoding/base64" - "encoding/json" - "fmt" - - "github.com/google/certificate-transparency/go/x509" -) - -const ( - issuerKeyHashLength = 32 -) - -/////////////////////////////////////////////////////////////////////////////// -// The following structures represent those outlined in the RFC6962 document: -/////////////////////////////////////////////////////////////////////////////// - -// LogEntryType represents the LogEntryType enum from section 3.1 of the RFC: -// enum { x509_entry(0), precert_entry(1), (65535) } LogEntryType; -type LogEntryType uint16 - -func (e LogEntryType) String() string { - switch e { - case X509LogEntryType: - return "X509LogEntryType" - case PrecertLogEntryType: - return "PrecertLogEntryType" - } - panic(fmt.Sprintf("No string defined for LogEntryType constant value %d", e)) -} - -// LogEntryType constants, see section 3.1 of RFC6962. -const ( - X509LogEntryType LogEntryType = 0 - PrecertLogEntryType LogEntryType = 1 -) - -// MerkleLeafType represents the MerkleLeafType enum from section 3.4 of the -// RFC: enum { timestamped_entry(0), (255) } MerkleLeafType; -type MerkleLeafType uint8 - -func (m MerkleLeafType) String() string { - switch m { - case TimestampedEntryLeafType: - return "TimestampedEntryLeafType" - default: - return fmt.Sprintf("UnknownLeafType(%d)", m) - } -} - -// MerkleLeafType constants, see section 3.4 of the RFC. -const ( - TimestampedEntryLeafType MerkleLeafType = 0 // Entry type for an SCT -) - -// Version represents the Version enum from section 3.2 of the RFC: -// enum { v1(0), (255) } Version; -type Version uint8 - -func (v Version) String() string { - switch v { - case V1: - return "V1" - default: - return fmt.Sprintf("UnknownVersion(%d)", v) - } -} - -// CT Version constants, see section 3.2 of the RFC. -const ( - V1 Version = 0 -) - -// SignatureType differentiates STH signatures from SCT signatures, see RFC -// section 3.2 -type SignatureType uint8 - -func (st SignatureType) String() string { - switch st { - case CertificateTimestampSignatureType: - return "CertificateTimestamp" - case TreeHashSignatureType: - return "TreeHash" - default: - return fmt.Sprintf("UnknownSignatureType(%d)", st) - } -} - -// SignatureType constants, see RFC section 3.2 -const ( - CertificateTimestampSignatureType SignatureType = 0 - TreeHashSignatureType SignatureType = 1 -) - -// ASN1Cert type for holding the raw DER bytes of an ASN.1 Certificate -// (section 3.1) -type ASN1Cert []byte - -// PreCert represents a Precertificate (section 3.2) -type PreCert struct { - IssuerKeyHash [issuerKeyHashLength]byte - TBSCertificate []byte -} - -// CTExtensions is a representation of the raw bytes of any CtExtension -// structure (see section 3.2) -type CTExtensions []byte - -// MerkleTreeNode represents an internal node in the CT tree -type MerkleTreeNode []byte - -// ConsistencyProof represents a CT consistency proof (see sections 2.1.2 and -// 4.4) -type ConsistencyProof []MerkleTreeNode - -// AuditPath represents a CT inclusion proof (see sections 2.1.1 and 4.5) -type AuditPath []MerkleTreeNode - -// LeafInput represents a serialized MerkleTreeLeaf structure -type LeafInput []byte - -// HashAlgorithm from the DigitallySigned struct -type HashAlgorithm byte - -// HashAlgorithm constants -const ( - None HashAlgorithm = 0 - MD5 HashAlgorithm = 1 - SHA1 HashAlgorithm = 2 - SHA224 HashAlgorithm = 3 - SHA256 HashAlgorithm = 4 - SHA384 HashAlgorithm = 5 - SHA512 HashAlgorithm = 6 -) - -func (h HashAlgorithm) String() string { - switch h { - case None: - return "None" - case MD5: - return "MD5" - case SHA1: - return "SHA1" - case SHA224: - return "SHA224" - case SHA256: - return "SHA256" - case SHA384: - return "SHA384" - case SHA512: - return "SHA512" - default: - return fmt.Sprintf("UNKNOWN(%d)", h) - } -} - -// SignatureAlgorithm from the the DigitallySigned struct -type SignatureAlgorithm byte - -// SignatureAlgorithm constants -const ( - Anonymous SignatureAlgorithm = 0 - RSA SignatureAlgorithm = 1 - DSA SignatureAlgorithm = 2 - ECDSA SignatureAlgorithm = 3 -) - -func (s SignatureAlgorithm) String() string { - switch s { - case Anonymous: - return "Anonymous" - case RSA: - return "RSA" - case DSA: - return "DSA" - case ECDSA: - return "ECDSA" - default: - return fmt.Sprintf("UNKNOWN(%d)", s) - } -} - -// DigitallySigned represents an RFC5246 DigitallySigned structure -type DigitallySigned struct { - HashAlgorithm HashAlgorithm - SignatureAlgorithm SignatureAlgorithm - Signature []byte -} - -// FromBase64String populates the DigitallySigned structure from the base64 data passed in. -// Returns an error if the base64 data is invalid. -func (d *DigitallySigned) FromBase64String(b64 string) error { - raw, err := base64.StdEncoding.DecodeString(b64) - if err != nil { - return fmt.Errorf("failed to unbase64 DigitallySigned: %v", err) - } - ds, err := UnmarshalDigitallySigned(bytes.NewReader(raw)) - if err != nil { - return fmt.Errorf("failed to unmarshal DigitallySigned: %v", err) - } - *d = *ds - return nil -} - -// Base64String returns the base64 representation of the DigitallySigned struct. -func (d DigitallySigned) Base64String() (string, error) { - b, err := MarshalDigitallySigned(d) - if err != nil { - return "", err - } - return base64.StdEncoding.EncodeToString(b), nil -} - -// MarshalJSON implements the json.Marshaller interface. -func (d DigitallySigned) MarshalJSON() ([]byte, error) { - b64, err := d.Base64String() - if err != nil { - return []byte{}, err - } - return []byte(`"` + b64 + `"`), nil -} - -// UnmarshalJSON implements the json.Unmarshaler interface. -func (d *DigitallySigned) UnmarshalJSON(b []byte) error { - var content string - if err := json.Unmarshal(b, &content); err != nil { - return fmt.Errorf("failed to unmarshal DigitallySigned: %v", err) - } - return d.FromBase64String(content) -} - -// LogEntry represents the contents of an entry in a CT log, see section 3.1. -type LogEntry struct { - Index int64 - Leaf MerkleTreeLeaf - X509Cert *x509.Certificate - Precert *Precertificate - Chain []ASN1Cert -} - -// SHA256Hash represents the output from the SHA256 hash function. -type SHA256Hash [sha256.Size]byte - -// FromBase64String populates the SHA256 struct with the contents of the base64 data passed in. -func (s *SHA256Hash) FromBase64String(b64 string) error { - bs, err := base64.StdEncoding.DecodeString(b64) - if err != nil { - return fmt.Errorf("failed to unbase64 LogID: %v", err) - } - if len(bs) != sha256.Size { - return fmt.Errorf("invalid SHA256 length, expected 32 but got %d", len(bs)) - } - copy(s[:], bs) - return nil -} - -// Base64String returns the base64 representation of this SHA256Hash. -func (s SHA256Hash) Base64String() string { - return base64.StdEncoding.EncodeToString(s[:]) -} - -// MarshalJSON implements the json.Marshaller interface for SHA256Hash. -func (s SHA256Hash) MarshalJSON() ([]byte, error) { - return []byte(`"` + s.Base64String() + `"`), nil -} - -// UnmarshalJSON implements the json.Unmarshaller interface. -func (s *SHA256Hash) UnmarshalJSON(b []byte) error { - var content string - if err := json.Unmarshal(b, &content); err != nil { - return fmt.Errorf("failed to unmarshal SHA256Hash: %v", err) - } - return s.FromBase64String(content) -} - -// SignedTreeHead represents the structure returned by the get-sth CT method -// after base64 decoding. See sections 3.5 and 4.3 in the RFC) -type SignedTreeHead struct { - Version Version `json:"sth_version"` // The version of the protocol to which the STH conforms - TreeSize uint64 `json:"tree_size"` // The number of entries in the new tree - Timestamp uint64 `json:"timestamp"` // The time at which the STH was created - SHA256RootHash SHA256Hash `json:"sha256_root_hash"` // The root hash of the log's Merkle tree - TreeHeadSignature DigitallySigned `json:"tree_head_signature"` // The Log's signature for this STH (see RFC section 3.5) - LogID SHA256Hash `json:"log_id"` // The SHA256 hash of the log's public key -} - -// SignedCertificateTimestamp represents the structure returned by the -// add-chain and add-pre-chain methods after base64 decoding. (see RFC sections -// 3.2 ,4.1 and 4.2) -type SignedCertificateTimestamp struct { - SCTVersion Version // The version of the protocol to which the SCT conforms - LogID SHA256Hash // the SHA-256 hash of the log's public key, calculated over - // the DER encoding of the key represented as SubjectPublicKeyInfo. - Timestamp uint64 // Timestamp (in ms since unix epoc) at which the SCT was issued - Extensions CTExtensions // For future extensions to the protocol - Signature DigitallySigned // The Log's signature for this SCT -} - -func (s SignedCertificateTimestamp) String() string { - return fmt.Sprintf("{Version:%d LogId:%s Timestamp:%d Extensions:'%s' Signature:%v}", s.SCTVersion, - base64.StdEncoding.EncodeToString(s.LogID[:]), - s.Timestamp, - s.Extensions, - s.Signature) -} - -// TimestampedEntry is part of the MerkleTreeLeaf structure. -// See RFC section 3.4 -type TimestampedEntry struct { - Timestamp uint64 - EntryType LogEntryType - X509Entry ASN1Cert - PrecertEntry PreCert - Extensions CTExtensions -} - -// MerkleTreeLeaf represents the deserialized sructure of the hash input for the -// leaves of a log's Merkle tree. See RFC section 3.4 -type MerkleTreeLeaf struct { - Version Version // the version of the protocol to which the MerkleTreeLeaf corresponds - LeafType MerkleLeafType // The type of the leaf input, currently only TimestampedEntry can exist - TimestampedEntry TimestampedEntry // The entry data itself -} - -// Precertificate represents the parsed CT Precertificate structure. -type Precertificate struct { - // Raw DER bytes of the precert - Raw []byte - // SHA256 hash of the issuing key - IssuerKeyHash [issuerKeyHashLength]byte - // Parsed TBSCertificate structure (held in an x509.Certificate for ease of - // access. - TBSCertificate x509.Certificate -} - -// X509Certificate returns the X.509 Certificate contained within the -// MerkleTreeLeaf. -// Returns a pointer to an x509.Certificate or a non-nil error. -func (m *MerkleTreeLeaf) X509Certificate() (*x509.Certificate, error) { - return x509.ParseCertificate(m.TimestampedEntry.X509Entry) -} - -type sctError int - -// Preallocate errors for performance -var ( - ErrInvalidVersion error = sctError(1) - ErrNotEnoughBuffer error = sctError(2) -) - -func (e sctError) Error() string { - switch e { - case ErrInvalidVersion: - return "invalid SCT version detected" - case ErrNotEnoughBuffer: - return "provided buffer was too small" - default: - return "unknown error" - } -} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/BUILD b/vendor/github.com/google/certificate-transparency/go/x509/BUILD deleted file mode 100644 index 89ddc43348f..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/x509/BUILD +++ /dev/null @@ -1,78 +0,0 @@ -load("@io_bazel_rules_go//go:def.bzl", "go_library") - -go_library( - name = "go_default_library", - srcs = [ - "cert_pool.go", - "pem_decrypt.go", - "pkcs1.go", - "pkcs8.go", - "root.go", - "sec1.go", - "verify.go", - "x509.go", - ] + select({ - "@io_bazel_rules_go//go/platform:darwin": [ - "root_darwin.go", - "root_stub.go", - ], - "@io_bazel_rules_go//go/platform:dragonfly": [ - "root_unix.go", - ], - "@io_bazel_rules_go//go/platform:freebsd": [ - "root_unix.go", - ], - "@io_bazel_rules_go//go/platform:linux": [ - "root_unix.go", - ], - "@io_bazel_rules_go//go/platform:netbsd": [ - "root_unix.go", - ], - "@io_bazel_rules_go//go/platform:openbsd": [ - "root_unix.go", - ], - "@io_bazel_rules_go//go/platform:plan9": [ - "root_plan9.go", - ], - "@io_bazel_rules_go//go/platform:windows": [ - "root_windows.go", - ], - "//conditions:default": [], - }), - cgo = True, - clinkopts = select({ - "@io_bazel_rules_go//go/platform:darwin": [ - "-framework CoreFoundation -framework Security", - ], - "//conditions:default": [], - }), - copts = select({ - "@io_bazel_rules_go//go/platform:darwin": [ - "-mmacosx-version-min=10.6 -D__MAC_OS_X_VERSION_MAX_ALLOWED=1060", - ], - "//conditions:default": [], - }), - importpath = "github.com/google/certificate-transparency/go/x509", - visibility = ["//visibility:public"], - deps = [ - "//vendor/github.com/google/certificate-transparency/go/asn1:go_default_library", - "//vendor/github.com/google/certificate-transparency/go/x509/pkix:go_default_library", - ], -) - -filegroup( - name = "package-srcs", - srcs = glob(["**"]), - tags = ["automanaged"], - visibility = ["//visibility:private"], -) - -filegroup( - name = "all-srcs", - srcs = [ - ":package-srcs", - "//vendor/github.com/google/certificate-transparency/go/x509/pkix:all-srcs", - ], - tags = ["automanaged"], - visibility = ["//visibility:public"], -) diff --git a/vendor/github.com/google/certificate-transparency/go/x509/pkcs8.go b/vendor/github.com/google/certificate-transparency/go/x509/pkcs8.go deleted file mode 100755 index c6ad70b3e6f..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/x509/pkcs8.go +++ /dev/null @@ -1,56 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package x509 - -import ( - // START CT CHANGES - "github.com/google/certificate-transparency/go/asn1" - "github.com/google/certificate-transparency/go/x509/pkix" - // END CT CHANGES - "errors" - "fmt" -) - -// pkcs8 reflects an ASN.1, PKCS#8 PrivateKey. See -// ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-8/pkcs-8v1_2.asn -// and RFC5208. -type pkcs8 struct { - Version int - Algo pkix.AlgorithmIdentifier - PrivateKey []byte - // optional attributes omitted. -} - -// ParsePKCS8PrivateKey parses an unencrypted, PKCS#8 private key. See -// http://www.rsa.com/rsalabs/node.asp?id=2130 and RFC5208. -func ParsePKCS8PrivateKey(der []byte) (key interface{}, err error) { - var privKey pkcs8 - if _, err := asn1.Unmarshal(der, &privKey); err != nil { - return nil, err - } - switch { - case privKey.Algo.Algorithm.Equal(oidPublicKeyRSA): - key, err = ParsePKCS1PrivateKey(privKey.PrivateKey) - if err != nil { - return nil, errors.New("x509: failed to parse RSA private key embedded in PKCS#8: " + err.Error()) - } - return key, nil - - case privKey.Algo.Algorithm.Equal(oidPublicKeyECDSA): - bytes := privKey.Algo.Parameters.FullBytes - namedCurveOID := new(asn1.ObjectIdentifier) - if _, err := asn1.Unmarshal(bytes, namedCurveOID); err != nil { - namedCurveOID = nil - } - key, err = parseECPrivateKey(namedCurveOID, privKey.PrivateKey) - if err != nil { - return nil, errors.New("x509: failed to parse EC private key embedded in PKCS#8: " + err.Error()) - } - return key, nil - - default: - return nil, fmt.Errorf("x509: PKCS#8 wrapping contained private key with unknown algorithm: %v", privKey.Algo.Algorithm) - } -} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/pkix/pkix.go b/vendor/github.com/google/certificate-transparency/go/x509/pkix/pkix.go deleted file mode 100755 index 67db6ae5e3e..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/x509/pkix/pkix.go +++ /dev/null @@ -1,173 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package pkix contains shared, low level structures used for ASN.1 parsing -// and serialization of X.509 certificates, CRL and OCSP. -package pkix - -import ( - // START CT CHANGES - "github.com/google/certificate-transparency/go/asn1" - // END CT CHANGES - "math/big" - "time" -) - -// AlgorithmIdentifier represents the ASN.1 structure of the same name. See RFC -// 5280, section 4.1.1.2. -type AlgorithmIdentifier struct { - Algorithm asn1.ObjectIdentifier - Parameters asn1.RawValue `asn1:"optional"` -} - -type RDNSequence []RelativeDistinguishedNameSET - -type RelativeDistinguishedNameSET []AttributeTypeAndValue - -// AttributeTypeAndValue mirrors the ASN.1 structure of the same name in -// http://tools.ietf.org/html/rfc5280#section-4.1.2.4 -type AttributeTypeAndValue struct { - Type asn1.ObjectIdentifier - Value interface{} -} - -// Extension represents the ASN.1 structure of the same name. See RFC -// 5280, section 4.2. -type Extension struct { - Id asn1.ObjectIdentifier - Critical bool `asn1:"optional"` - Value []byte -} - -// Name represents an X.509 distinguished name. This only includes the common -// elements of a DN. Additional elements in the name are ignored. -type Name struct { - Country, Organization, OrganizationalUnit []string - Locality, Province []string - StreetAddress, PostalCode []string - SerialNumber, CommonName string - - Names []AttributeTypeAndValue -} - -func (n *Name) FillFromRDNSequence(rdns *RDNSequence) { - for _, rdn := range *rdns { - if len(rdn) == 0 { - continue - } - atv := rdn[0] - n.Names = append(n.Names, atv) - value, ok := atv.Value.(string) - if !ok { - continue - } - - t := atv.Type - if len(t) == 4 && t[0] == 2 && t[1] == 5 && t[2] == 4 { - switch t[3] { - case 3: - n.CommonName = value - case 5: - n.SerialNumber = value - case 6: - n.Country = append(n.Country, value) - case 7: - n.Locality = append(n.Locality, value) - case 8: - n.Province = append(n.Province, value) - case 9: - n.StreetAddress = append(n.StreetAddress, value) - case 10: - n.Organization = append(n.Organization, value) - case 11: - n.OrganizationalUnit = append(n.OrganizationalUnit, value) - case 17: - n.PostalCode = append(n.PostalCode, value) - } - } - } -} - -var ( - oidCountry = []int{2, 5, 4, 6} - oidOrganization = []int{2, 5, 4, 10} - oidOrganizationalUnit = []int{2, 5, 4, 11} - oidCommonName = []int{2, 5, 4, 3} - oidSerialNumber = []int{2, 5, 4, 5} - oidLocality = []int{2, 5, 4, 7} - oidProvince = []int{2, 5, 4, 8} - oidStreetAddress = []int{2, 5, 4, 9} - oidPostalCode = []int{2, 5, 4, 17} -) - -// appendRDNs appends a relativeDistinguishedNameSET to the given RDNSequence -// and returns the new value. The relativeDistinguishedNameSET contains an -// attributeTypeAndValue for each of the given values. See RFC 5280, A.1, and -// search for AttributeTypeAndValue. -func appendRDNs(in RDNSequence, values []string, oid asn1.ObjectIdentifier) RDNSequence { - if len(values) == 0 { - return in - } - - s := make([]AttributeTypeAndValue, len(values)) - for i, value := range values { - s[i].Type = oid - s[i].Value = value - } - - return append(in, s) -} - -func (n Name) ToRDNSequence() (ret RDNSequence) { - ret = appendRDNs(ret, n.Country, oidCountry) - ret = appendRDNs(ret, n.Organization, oidOrganization) - ret = appendRDNs(ret, n.OrganizationalUnit, oidOrganizationalUnit) - ret = appendRDNs(ret, n.Locality, oidLocality) - ret = appendRDNs(ret, n.Province, oidProvince) - ret = appendRDNs(ret, n.StreetAddress, oidStreetAddress) - ret = appendRDNs(ret, n.PostalCode, oidPostalCode) - if len(n.CommonName) > 0 { - ret = appendRDNs(ret, []string{n.CommonName}, oidCommonName) - } - if len(n.SerialNumber) > 0 { - ret = appendRDNs(ret, []string{n.SerialNumber}, oidSerialNumber) - } - - return ret -} - -// CertificateList represents the ASN.1 structure of the same name. See RFC -// 5280, section 5.1. Use Certificate.CheckCRLSignature to verify the -// signature. -type CertificateList struct { - TBSCertList TBSCertificateList - SignatureAlgorithm AlgorithmIdentifier - SignatureValue asn1.BitString -} - -// HasExpired reports whether now is past the expiry time of certList. -func (certList *CertificateList) HasExpired(now time.Time) bool { - return now.After(certList.TBSCertList.NextUpdate) -} - -// TBSCertificateList represents the ASN.1 structure of the same name. See RFC -// 5280, section 5.1. -type TBSCertificateList struct { - Raw asn1.RawContent - Version int `asn1:"optional,default:2"` - Signature AlgorithmIdentifier - Issuer RDNSequence - ThisUpdate time.Time - NextUpdate time.Time - RevokedCertificates []RevokedCertificate `asn1:"optional"` - Extensions []Extension `asn1:"tag:0,optional,explicit"` -} - -// RevokedCertificate represents the ASN.1 structure of the same name. See RFC -// 5280, section 5.1. -type RevokedCertificate struct { - SerialNumber *big.Int - RevocationTime time.Time - Extensions []Extension `asn1:"optional"` -} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/root_darwin.go b/vendor/github.com/google/certificate-transparency/go/x509/root_darwin.go deleted file mode 100755 index 3d3fa4e4d19..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/x509/root_darwin.go +++ /dev/null @@ -1,83 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build darwin,cgo - -package x509 - -/* -#cgo CFLAGS: -mmacosx-version-min=10.6 -D__MAC_OS_X_VERSION_MAX_ALLOWED=1060 -#cgo LDFLAGS: -framework CoreFoundation -framework Security - -#include -#include - -// FetchPEMRootsCTX509 fetches the system's list of trusted X.509 root certificates. -// -// On success it returns 0 and fills pemRoots with a CFDataRef that contains the extracted root -// certificates of the system. On failure, the function returns -1. -// -// Note: The CFDataRef returned in pemRoots must be released (using CFRelease) after -// we've consumed its content. -int FetchPEMRootsCTX509(CFDataRef *pemRoots) { - if (pemRoots == NULL) { - return -1; - } - - CFArrayRef certs = NULL; - OSStatus err = SecTrustCopyAnchorCertificates(&certs); - if (err != noErr) { - return -1; - } - - CFMutableDataRef combinedData = CFDataCreateMutable(kCFAllocatorDefault, 0); - int i, ncerts = CFArrayGetCount(certs); - for (i = 0; i < ncerts; i++) { - CFDataRef data = NULL; - SecCertificateRef cert = (SecCertificateRef)CFArrayGetValueAtIndex(certs, i); - if (cert == NULL) { - continue; - } - - // Note: SecKeychainItemExport is deprecated as of 10.7 in favor of SecItemExport. - // Once we support weak imports via cgo we should prefer that, and fall back to this - // for older systems. - err = SecKeychainItemExport(cert, kSecFormatX509Cert, kSecItemPemArmour, NULL, &data); - if (err != noErr) { - continue; - } - - if (data != NULL) { - CFDataAppendBytes(combinedData, CFDataGetBytePtr(data), CFDataGetLength(data)); - CFRelease(data); - } - } - - CFRelease(certs); - - *pemRoots = combinedData; - return 0; -} -*/ -import "C" -import "unsafe" - -func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) { - return nil, nil -} - -func initSystemRoots() { - roots := NewCertPool() - - var data C.CFDataRef = nil - err := C.FetchPEMRootsCTX509(&data) - if err == -1 { - return - } - - defer C.CFRelease(C.CFTypeRef(data)) - buf := C.GoBytes(unsafe.Pointer(C.CFDataGetBytePtr(data)), C.int(C.CFDataGetLength(data))) - roots.AppendCertsFromPEM(buf) - systemRoots = roots -} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/root_stub.go b/vendor/github.com/google/certificate-transparency/go/x509/root_stub.go deleted file mode 100755 index 4c742ccc371..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/x509/root_stub.go +++ /dev/null @@ -1,14 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build darwin,!cgo - -package x509 - -func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) { - return nil, nil -} - -func initSystemRoots() { -} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/root_unix.go b/vendor/github.com/google/certificate-transparency/go/x509/root_unix.go deleted file mode 100755 index 324f855b135..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/x509/root_unix.go +++ /dev/null @@ -1,37 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build dragonfly freebsd linux openbsd netbsd - -package x509 - -import "io/ioutil" - -// Possible certificate files; stop after finding one. -var certFiles = []string{ - "/etc/ssl/certs/ca-certificates.crt", // Debian/Ubuntu/Gentoo etc. - "/etc/pki/tls/certs/ca-bundle.crt", // Fedora/RHEL - "/etc/ssl/ca-bundle.pem", // OpenSUSE - "/etc/ssl/cert.pem", // OpenBSD - "/usr/local/share/certs/ca-root-nss.crt", // FreeBSD/DragonFly -} - -func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) { - return nil, nil -} - -func initSystemRoots() { - roots := NewCertPool() - for _, file := range certFiles { - data, err := ioutil.ReadFile(file) - if err == nil { - roots.AppendCertsFromPEM(data) - systemRoots = roots - return - } - } - - // All of the files failed to load. systemRoots will be nil which will - // trigger a specific error at verification time. -} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/verify.go b/vendor/github.com/google/certificate-transparency/go/x509/verify.go deleted file mode 100755 index e82dbc12b0b..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/x509/verify.go +++ /dev/null @@ -1,476 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package x509 - -import ( - "fmt" - "net" - "runtime" - "strings" - "time" - "unicode/utf8" -) - -type InvalidReason int - -const ( - // NotAuthorizedToSign results when a certificate is signed by another - // which isn't marked as a CA certificate. - NotAuthorizedToSign InvalidReason = iota - // Expired results when a certificate has expired, based on the time - // given in the VerifyOptions. - Expired - // CANotAuthorizedForThisName results when an intermediate or root - // certificate has a name constraint which doesn't include the name - // being checked. - CANotAuthorizedForThisName - // TooManyIntermediates results when a path length constraint is - // violated. - TooManyIntermediates - // IncompatibleUsage results when the certificate's key usage indicates - // that it may only be used for a different purpose. - IncompatibleUsage -) - -// CertificateInvalidError results when an odd error occurs. Users of this -// library probably want to handle all these errors uniformly. -type CertificateInvalidError struct { - Cert *Certificate - Reason InvalidReason -} - -func (e CertificateInvalidError) Error() string { - switch e.Reason { - case NotAuthorizedToSign: - return "x509: certificate is not authorized to sign other certificates" - case Expired: - return "x509: certificate has expired or is not yet valid" - case CANotAuthorizedForThisName: - return "x509: a root or intermediate certificate is not authorized to sign in this domain" - case TooManyIntermediates: - return "x509: too many intermediates for path length constraint" - case IncompatibleUsage: - return "x509: certificate specifies an incompatible key usage" - } - return "x509: unknown error" -} - -// HostnameError results when the set of authorized names doesn't match the -// requested name. -type HostnameError struct { - Certificate *Certificate - Host string -} - -func (h HostnameError) Error() string { - c := h.Certificate - - var valid string - if ip := net.ParseIP(h.Host); ip != nil { - // Trying to validate an IP - if len(c.IPAddresses) == 0 { - return "x509: cannot validate certificate for " + h.Host + " because it doesn't contain any IP SANs" - } - for _, san := range c.IPAddresses { - if len(valid) > 0 { - valid += ", " - } - valid += san.String() - } - } else { - if len(c.DNSNames) > 0 { - valid = strings.Join(c.DNSNames, ", ") - } else { - valid = c.Subject.CommonName - } - } - return "x509: certificate is valid for " + valid + ", not " + h.Host -} - -// UnknownAuthorityError results when the certificate issuer is unknown -type UnknownAuthorityError struct { - cert *Certificate - // hintErr contains an error that may be helpful in determining why an - // authority wasn't found. - hintErr error - // hintCert contains a possible authority certificate that was rejected - // because of the error in hintErr. - hintCert *Certificate -} - -func (e UnknownAuthorityError) Error() string { - s := "x509: certificate signed by unknown authority" - if e.hintErr != nil { - certName := e.hintCert.Subject.CommonName - if len(certName) == 0 { - if len(e.hintCert.Subject.Organization) > 0 { - certName = e.hintCert.Subject.Organization[0] - } - certName = "serial:" + e.hintCert.SerialNumber.String() - } - s += fmt.Sprintf(" (possibly because of %q while trying to verify candidate authority certificate %q)", e.hintErr, certName) - } - return s -} - -// SystemRootsError results when we fail to load the system root certificates. -type SystemRootsError struct { -} - -func (e SystemRootsError) Error() string { - return "x509: failed to load system roots and no roots provided" -} - -// VerifyOptions contains parameters for Certificate.Verify. It's a structure -// because other PKIX verification APIs have ended up needing many options. -type VerifyOptions struct { - DNSName string - Intermediates *CertPool - Roots *CertPool // if nil, the system roots are used - CurrentTime time.Time // if zero, the current time is used - DisableTimeChecks bool - // KeyUsage specifies which Extended Key Usage values are acceptable. - // An empty list means ExtKeyUsageServerAuth. Key usage is considered a - // constraint down the chain which mirrors Windows CryptoAPI behaviour, - // but not the spec. To accept any key usage, include ExtKeyUsageAny. - KeyUsages []ExtKeyUsage -} - -const ( - leafCertificate = iota - intermediateCertificate - rootCertificate -) - -// isValid performs validity checks on the c. -func (c *Certificate) isValid(certType int, currentChain []*Certificate, opts *VerifyOptions) error { - if !opts.DisableTimeChecks { - now := opts.CurrentTime - if now.IsZero() { - now = time.Now() - } - if now.Before(c.NotBefore) || now.After(c.NotAfter) { - return CertificateInvalidError{c, Expired} - } - } - - if len(c.PermittedDNSDomains) > 0 { - ok := false - for _, domain := range c.PermittedDNSDomains { - if opts.DNSName == domain || - (strings.HasSuffix(opts.DNSName, domain) && - len(opts.DNSName) >= 1+len(domain) && - opts.DNSName[len(opts.DNSName)-len(domain)-1] == '.') { - ok = true - break - } - } - - if !ok { - return CertificateInvalidError{c, CANotAuthorizedForThisName} - } - } - - // KeyUsage status flags are ignored. From Engineering Security, Peter - // Gutmann: A European government CA marked its signing certificates as - // being valid for encryption only, but no-one noticed. Another - // European CA marked its signature keys as not being valid for - // signatures. A different CA marked its own trusted root certificate - // as being invalid for certificate signing. Another national CA - // distributed a certificate to be used to encrypt data for the - // country’s tax authority that was marked as only being usable for - // digital signatures but not for encryption. Yet another CA reversed - // the order of the bit flags in the keyUsage due to confusion over - // encoding endianness, essentially setting a random keyUsage in - // certificates that it issued. Another CA created a self-invalidating - // certificate by adding a certificate policy statement stipulating - // that the certificate had to be used strictly as specified in the - // keyUsage, and a keyUsage containing a flag indicating that the RSA - // encryption key could only be used for Diffie-Hellman key agreement. - - if certType == intermediateCertificate && (!c.BasicConstraintsValid || !c.IsCA) { - return CertificateInvalidError{c, NotAuthorizedToSign} - } - - if c.BasicConstraintsValid && c.MaxPathLen >= 0 { - numIntermediates := len(currentChain) - 1 - if numIntermediates > c.MaxPathLen { - return CertificateInvalidError{c, TooManyIntermediates} - } - } - - return nil -} - -// Verify attempts to verify c by building one or more chains from c to a -// certificate in opts.Roots, using certificates in opts.Intermediates if -// needed. If successful, it returns one or more chains where the first -// element of the chain is c and the last element is from opts.Roots. -// -// WARNING: this doesn't do any revocation checking. -func (c *Certificate) Verify(opts VerifyOptions) (chains [][]*Certificate, err error) { - // Use Windows's own verification and chain building. - if opts.Roots == nil && runtime.GOOS == "windows" { - return c.systemVerify(&opts) - } - - if opts.Roots == nil { - opts.Roots = systemRootsPool() - if opts.Roots == nil { - return nil, SystemRootsError{} - } - } - - err = c.isValid(leafCertificate, nil, &opts) - if err != nil { - return - } - - if len(opts.DNSName) > 0 { - err = c.VerifyHostname(opts.DNSName) - if err != nil { - return - } - } - - candidateChains, err := c.buildChains(make(map[int][][]*Certificate), []*Certificate{c}, &opts) - if err != nil { - return - } - - keyUsages := opts.KeyUsages - if len(keyUsages) == 0 { - keyUsages = []ExtKeyUsage{ExtKeyUsageServerAuth} - } - - // If any key usage is acceptable then we're done. - for _, usage := range keyUsages { - if usage == ExtKeyUsageAny { - chains = candidateChains - return - } - } - - for _, candidate := range candidateChains { - if checkChainForKeyUsage(candidate, keyUsages) { - chains = append(chains, candidate) - } - } - - if len(chains) == 0 { - err = CertificateInvalidError{c, IncompatibleUsage} - } - - return -} - -func appendToFreshChain(chain []*Certificate, cert *Certificate) []*Certificate { - n := make([]*Certificate, len(chain)+1) - copy(n, chain) - n[len(chain)] = cert - return n -} - -func (c *Certificate) buildChains(cache map[int][][]*Certificate, currentChain []*Certificate, opts *VerifyOptions) (chains [][]*Certificate, err error) { - possibleRoots, failedRoot, rootErr := opts.Roots.findVerifiedParents(c) - for _, rootNum := range possibleRoots { - root := opts.Roots.certs[rootNum] - err = root.isValid(rootCertificate, currentChain, opts) - if err != nil { - continue - } - chains = append(chains, appendToFreshChain(currentChain, root)) - } - - possibleIntermediates, failedIntermediate, intermediateErr := opts.Intermediates.findVerifiedParents(c) -nextIntermediate: - for _, intermediateNum := range possibleIntermediates { - intermediate := opts.Intermediates.certs[intermediateNum] - for _, cert := range currentChain { - if cert == intermediate { - continue nextIntermediate - } - } - err = intermediate.isValid(intermediateCertificate, currentChain, opts) - if err != nil { - continue - } - var childChains [][]*Certificate - childChains, ok := cache[intermediateNum] - if !ok { - childChains, err = intermediate.buildChains(cache, appendToFreshChain(currentChain, intermediate), opts) - cache[intermediateNum] = childChains - } - chains = append(chains, childChains...) - } - - if len(chains) > 0 { - err = nil - } - - if len(chains) == 0 && err == nil { - hintErr := rootErr - hintCert := failedRoot - if hintErr == nil { - hintErr = intermediateErr - hintCert = failedIntermediate - } - err = UnknownAuthorityError{c, hintErr, hintCert} - } - - return -} - -func matchHostnames(pattern, host string) bool { - if len(pattern) == 0 || len(host) == 0 { - return false - } - - patternParts := strings.Split(pattern, ".") - hostParts := strings.Split(host, ".") - - if len(patternParts) != len(hostParts) { - return false - } - - for i, patternPart := range patternParts { - if patternPart == "*" { - continue - } - if patternPart != hostParts[i] { - return false - } - } - - return true -} - -// toLowerCaseASCII returns a lower-case version of in. See RFC 6125 6.4.1. We use -// an explicitly ASCII function to avoid any sharp corners resulting from -// performing Unicode operations on DNS labels. -func toLowerCaseASCII(in string) string { - // If the string is already lower-case then there's nothing to do. - isAlreadyLowerCase := true - for _, c := range in { - if c == utf8.RuneError { - // If we get a UTF-8 error then there might be - // upper-case ASCII bytes in the invalid sequence. - isAlreadyLowerCase = false - break - } - if 'A' <= c && c <= 'Z' { - isAlreadyLowerCase = false - break - } - } - - if isAlreadyLowerCase { - return in - } - - out := []byte(in) - for i, c := range out { - if 'A' <= c && c <= 'Z' { - out[i] += 'a' - 'A' - } - } - return string(out) -} - -// VerifyHostname returns nil if c is a valid certificate for the named host. -// Otherwise it returns an error describing the mismatch. -func (c *Certificate) VerifyHostname(h string) error { - // IP addresses may be written in [ ]. - candidateIP := h - if len(h) >= 3 && h[0] == '[' && h[len(h)-1] == ']' { - candidateIP = h[1 : len(h)-1] - } - if ip := net.ParseIP(candidateIP); ip != nil { - // We only match IP addresses against IP SANs. - // https://tools.ietf.org/html/rfc6125#appendix-B.2 - for _, candidate := range c.IPAddresses { - if ip.Equal(candidate) { - return nil - } - } - return HostnameError{c, candidateIP} - } - - lowered := toLowerCaseASCII(h) - - if len(c.DNSNames) > 0 { - for _, match := range c.DNSNames { - if matchHostnames(toLowerCaseASCII(match), lowered) { - return nil - } - } - // If Subject Alt Name is given, we ignore the common name. - } else if matchHostnames(toLowerCaseASCII(c.Subject.CommonName), lowered) { - return nil - } - - return HostnameError{c, h} -} - -func checkChainForKeyUsage(chain []*Certificate, keyUsages []ExtKeyUsage) bool { - usages := make([]ExtKeyUsage, len(keyUsages)) - copy(usages, keyUsages) - - if len(chain) == 0 { - return false - } - - usagesRemaining := len(usages) - - // We walk down the list and cross out any usages that aren't supported - // by each certificate. If we cross out all the usages, then the chain - // is unacceptable. - - for i := len(chain) - 1; i >= 0; i-- { - cert := chain[i] - if len(cert.ExtKeyUsage) == 0 && len(cert.UnknownExtKeyUsage) == 0 { - // The certificate doesn't have any extended key usage specified. - continue - } - - for _, usage := range cert.ExtKeyUsage { - if usage == ExtKeyUsageAny { - // The certificate is explicitly good for any usage. - continue - } - } - - const invalidUsage ExtKeyUsage = -1 - - NextRequestedUsage: - for i, requestedUsage := range usages { - if requestedUsage == invalidUsage { - continue - } - - for _, usage := range cert.ExtKeyUsage { - if requestedUsage == usage { - continue NextRequestedUsage - } else if requestedUsage == ExtKeyUsageServerAuth && - (usage == ExtKeyUsageNetscapeServerGatedCrypto || - usage == ExtKeyUsageMicrosoftServerGatedCrypto) { - // In order to support COMODO - // certificate chains, we have to - // accept Netscape or Microsoft SGC - // usages as equal to ServerAuth. - continue NextRequestedUsage - } - } - - usages[i] = invalidUsage - usagesRemaining-- - if usagesRemaining == 0 { - return false - } - } - } - - return true -} diff --git a/vendor/github.com/google/certificate-transparency/go/x509/x509.go b/vendor/github.com/google/certificate-transparency/go/x509/x509.go deleted file mode 100755 index cda72200f8d..00000000000 --- a/vendor/github.com/google/certificate-transparency/go/x509/x509.go +++ /dev/null @@ -1,1622 +0,0 @@ -// Copyright 2009 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package x509 parses X.509-encoded keys and certificates. -// -// START CT CHANGES -// This is a fork of the go library crypto/x509 package, it's more relaxed -// about certificates that it'll accept, and exports the TBSCertificate -// structure. -// END CT CHANGES -package x509 - -import ( - "bytes" - "crypto" - "crypto/dsa" - "crypto/ecdsa" - "crypto/elliptic" - "crypto/rsa" - "crypto/sha1" - // START CT CHANGES - "github.com/google/certificate-transparency/go/asn1" - "github.com/google/certificate-transparency/go/x509/pkix" - // END CT CHANGES - "encoding/pem" - "errors" - // START CT CHANGES - "fmt" - // END CT CHANGES - "io" - "math/big" - "net" - "time" -) - -// pkixPublicKey reflects a PKIX public key structure. See SubjectPublicKeyInfo -// in RFC 3280. -type pkixPublicKey struct { - Algo pkix.AlgorithmIdentifier - BitString asn1.BitString -} - -// ParsePKIXPublicKey parses a DER encoded public key. These values are -// typically found in PEM blocks with "BEGIN PUBLIC KEY". -func ParsePKIXPublicKey(derBytes []byte) (pub interface{}, err error) { - var pki publicKeyInfo - if _, err = asn1.Unmarshal(derBytes, &pki); err != nil { - return - } - algo := getPublicKeyAlgorithmFromOID(pki.Algorithm.Algorithm) - if algo == UnknownPublicKeyAlgorithm { - return nil, errors.New("x509: unknown public key algorithm") - } - return parsePublicKey(algo, &pki) -} - -func marshalPublicKey(pub interface{}) (publicKeyBytes []byte, publicKeyAlgorithm pkix.AlgorithmIdentifier, err error) { - switch pub := pub.(type) { - case *rsa.PublicKey: - publicKeyBytes, err = asn1.Marshal(rsaPublicKey{ - N: pub.N, - E: pub.E, - }) - publicKeyAlgorithm.Algorithm = oidPublicKeyRSA - // This is a NULL parameters value which is technically - // superfluous, but most other code includes it and, by - // doing this, we match their public key hashes. - publicKeyAlgorithm.Parameters = asn1.RawValue{ - Tag: 5, - } - case *ecdsa.PublicKey: - publicKeyBytes = elliptic.Marshal(pub.Curve, pub.X, pub.Y) - oid, ok := oidFromNamedCurve(pub.Curve) - if !ok { - return nil, pkix.AlgorithmIdentifier{}, errors.New("x509: unsupported elliptic curve") - } - publicKeyAlgorithm.Algorithm = oidPublicKeyECDSA - var paramBytes []byte - paramBytes, err = asn1.Marshal(oid) - if err != nil { - return - } - publicKeyAlgorithm.Parameters.FullBytes = paramBytes - default: - return nil, pkix.AlgorithmIdentifier{}, errors.New("x509: only RSA and ECDSA public keys supported") - } - - return publicKeyBytes, publicKeyAlgorithm, nil -} - -// MarshalPKIXPublicKey serialises a public key to DER-encoded PKIX format. -func MarshalPKIXPublicKey(pub interface{}) ([]byte, error) { - var publicKeyBytes []byte - var publicKeyAlgorithm pkix.AlgorithmIdentifier - var err error - - if publicKeyBytes, publicKeyAlgorithm, err = marshalPublicKey(pub); err != nil { - return nil, err - } - - pkix := pkixPublicKey{ - Algo: publicKeyAlgorithm, - BitString: asn1.BitString{ - Bytes: publicKeyBytes, - BitLength: 8 * len(publicKeyBytes), - }, - } - - ret, _ := asn1.Marshal(pkix) - return ret, nil -} - -// These structures reflect the ASN.1 structure of X.509 certificates.: - -type certificate struct { - Raw asn1.RawContent - TBSCertificate tbsCertificate - SignatureAlgorithm pkix.AlgorithmIdentifier - SignatureValue asn1.BitString -} - -type tbsCertificate struct { - Raw asn1.RawContent - Version int `asn1:"optional,explicit,default:1,tag:0"` - SerialNumber *big.Int - SignatureAlgorithm pkix.AlgorithmIdentifier - Issuer asn1.RawValue - Validity validity - Subject asn1.RawValue - PublicKey publicKeyInfo - UniqueId asn1.BitString `asn1:"optional,tag:1"` - SubjectUniqueId asn1.BitString `asn1:"optional,tag:2"` - Extensions []pkix.Extension `asn1:"optional,explicit,tag:3"` -} - -type dsaAlgorithmParameters struct { - P, Q, G *big.Int -} - -type dsaSignature struct { - R, S *big.Int -} - -type ecdsaSignature dsaSignature - -type validity struct { - NotBefore, NotAfter time.Time -} - -type publicKeyInfo struct { - Raw asn1.RawContent - Algorithm pkix.AlgorithmIdentifier - PublicKey asn1.BitString -} - -// RFC 5280, 4.2.1.1 -type authKeyId struct { - Id []byte `asn1:"optional,tag:0"` -} - -type SignatureAlgorithm int - -const ( - UnknownSignatureAlgorithm SignatureAlgorithm = iota - MD2WithRSA - MD5WithRSA - SHA1WithRSA - SHA256WithRSA - SHA384WithRSA - SHA512WithRSA - DSAWithSHA1 - DSAWithSHA256 - ECDSAWithSHA1 - ECDSAWithSHA256 - ECDSAWithSHA384 - ECDSAWithSHA512 -) - -type PublicKeyAlgorithm int - -const ( - UnknownPublicKeyAlgorithm PublicKeyAlgorithm = iota - RSA - DSA - ECDSA -) - -// OIDs for signature algorithms -// -// pkcs-1 OBJECT IDENTIFIER ::= { -// iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) 1 } -// -// -// RFC 3279 2.2.1 RSA Signature Algorithms -// -// md2WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 2 } -// -// md5WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 4 } -// -// sha-1WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 5 } -// -// dsaWithSha1 OBJECT IDENTIFIER ::= { -// iso(1) member-body(2) us(840) x9-57(10040) x9cm(4) 3 } -// -// RFC 3279 2.2.3 ECDSA Signature Algorithm -// -// ecdsa-with-SHA1 OBJECT IDENTIFIER ::= { -// iso(1) member-body(2) us(840) ansi-x962(10045) -// signatures(4) ecdsa-with-SHA1(1)} -// -// -// RFC 4055 5 PKCS #1 Version 1.5 -// -// sha256WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 11 } -// -// sha384WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 12 } -// -// sha512WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 13 } -// -// -// RFC 5758 3.1 DSA Signature Algorithms -// -// dsaWithSha256 OBJECT IDENTIFIER ::= { -// joint-iso-ccitt(2) country(16) us(840) organization(1) gov(101) -// csor(3) algorithms(4) id-dsa-with-sha2(3) 2} -// -// RFC 5758 3.2 ECDSA Signature Algorithm -// -// ecdsa-with-SHA256 OBJECT IDENTIFIER ::= { iso(1) member-body(2) -// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 2 } -// -// ecdsa-with-SHA384 OBJECT IDENTIFIER ::= { iso(1) member-body(2) -// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 3 } -// -// ecdsa-with-SHA512 OBJECT IDENTIFIER ::= { iso(1) member-body(2) -// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 4 } - -var ( - oidSignatureMD2WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 2} - oidSignatureMD5WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 4} - oidSignatureSHA1WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 5} - oidSignatureSHA256WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 11} - oidSignatureSHA384WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 12} - oidSignatureSHA512WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 13} - oidSignatureDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 3} - oidSignatureDSAWithSHA256 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 4, 3, 2} - oidSignatureECDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 1} - oidSignatureECDSAWithSHA256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 2} - oidSignatureECDSAWithSHA384 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 3} - oidSignatureECDSAWithSHA512 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 4} -) - -func getSignatureAlgorithmFromOID(oid asn1.ObjectIdentifier) SignatureAlgorithm { - switch { - case oid.Equal(oidSignatureMD2WithRSA): - return MD2WithRSA - case oid.Equal(oidSignatureMD5WithRSA): - return MD5WithRSA - case oid.Equal(oidSignatureSHA1WithRSA): - return SHA1WithRSA - case oid.Equal(oidSignatureSHA256WithRSA): - return SHA256WithRSA - case oid.Equal(oidSignatureSHA384WithRSA): - return SHA384WithRSA - case oid.Equal(oidSignatureSHA512WithRSA): - return SHA512WithRSA - case oid.Equal(oidSignatureDSAWithSHA1): - return DSAWithSHA1 - case oid.Equal(oidSignatureDSAWithSHA256): - return DSAWithSHA256 - case oid.Equal(oidSignatureECDSAWithSHA1): - return ECDSAWithSHA1 - case oid.Equal(oidSignatureECDSAWithSHA256): - return ECDSAWithSHA256 - case oid.Equal(oidSignatureECDSAWithSHA384): - return ECDSAWithSHA384 - case oid.Equal(oidSignatureECDSAWithSHA512): - return ECDSAWithSHA512 - } - return UnknownSignatureAlgorithm -} - -// RFC 3279, 2.3 Public Key Algorithms -// -// pkcs-1 OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840) -// rsadsi(113549) pkcs(1) 1 } -// -// rsaEncryption OBJECT IDENTIFIER ::== { pkcs1-1 1 } -// -// id-dsa OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840) -// x9-57(10040) x9cm(4) 1 } -// -// RFC 5480, 2.1.1 Unrestricted Algorithm Identifier and Parameters -// -// id-ecPublicKey OBJECT IDENTIFIER ::= { -// iso(1) member-body(2) us(840) ansi-X9-62(10045) keyType(2) 1 } -var ( - oidPublicKeyRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 1} - oidPublicKeyDSA = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 1} - oidPublicKeyECDSA = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1} -) - -func getPublicKeyAlgorithmFromOID(oid asn1.ObjectIdentifier) PublicKeyAlgorithm { - switch { - case oid.Equal(oidPublicKeyRSA): - return RSA - case oid.Equal(oidPublicKeyDSA): - return DSA - case oid.Equal(oidPublicKeyECDSA): - return ECDSA - } - return UnknownPublicKeyAlgorithm -} - -// RFC 5480, 2.1.1.1. Named Curve -// -// secp224r1 OBJECT IDENTIFIER ::= { -// iso(1) identified-organization(3) certicom(132) curve(0) 33 } -// -// secp256r1 OBJECT IDENTIFIER ::= { -// iso(1) member-body(2) us(840) ansi-X9-62(10045) curves(3) -// prime(1) 7 } -// -// secp384r1 OBJECT IDENTIFIER ::= { -// iso(1) identified-organization(3) certicom(132) curve(0) 34 } -// -// secp521r1 OBJECT IDENTIFIER ::= { -// iso(1) identified-organization(3) certicom(132) curve(0) 35 } -// -// NB: secp256r1 is equivalent to prime256v1 -var ( - oidNamedCurveP224 = asn1.ObjectIdentifier{1, 3, 132, 0, 33} - oidNamedCurveP256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 3, 1, 7} - oidNamedCurveP384 = asn1.ObjectIdentifier{1, 3, 132, 0, 34} - oidNamedCurveP521 = asn1.ObjectIdentifier{1, 3, 132, 0, 35} -) - -func namedCurveFromOID(oid asn1.ObjectIdentifier) elliptic.Curve { - switch { - case oid.Equal(oidNamedCurveP224): - return elliptic.P224() - case oid.Equal(oidNamedCurveP256): - return elliptic.P256() - case oid.Equal(oidNamedCurveP384): - return elliptic.P384() - case oid.Equal(oidNamedCurveP521): - return elliptic.P521() - } - return nil -} - -func oidFromNamedCurve(curve elliptic.Curve) (asn1.ObjectIdentifier, bool) { - switch curve { - case elliptic.P224(): - return oidNamedCurveP224, true - case elliptic.P256(): - return oidNamedCurveP256, true - case elliptic.P384(): - return oidNamedCurveP384, true - case elliptic.P521(): - return oidNamedCurveP521, true - } - - return nil, false -} - -// KeyUsage represents the set of actions that are valid for a given key. It's -// a bitmap of the KeyUsage* constants. -type KeyUsage int - -const ( - KeyUsageDigitalSignature KeyUsage = 1 << iota - KeyUsageContentCommitment - KeyUsageKeyEncipherment - KeyUsageDataEncipherment - KeyUsageKeyAgreement - KeyUsageCertSign - KeyUsageCRLSign - KeyUsageEncipherOnly - KeyUsageDecipherOnly -) - -// RFC 5280, 4.2.1.12 Extended Key Usage -// -// anyExtendedKeyUsage OBJECT IDENTIFIER ::= { id-ce-extKeyUsage 0 } -// -// id-kp OBJECT IDENTIFIER ::= { id-pkix 3 } -// -// id-kp-serverAuth OBJECT IDENTIFIER ::= { id-kp 1 } -// id-kp-clientAuth OBJECT IDENTIFIER ::= { id-kp 2 } -// id-kp-codeSigning OBJECT IDENTIFIER ::= { id-kp 3 } -// id-kp-emailProtection OBJECT IDENTIFIER ::= { id-kp 4 } -// id-kp-timeStamping OBJECT IDENTIFIER ::= { id-kp 8 } -// id-kp-OCSPSigning OBJECT IDENTIFIER ::= { id-kp 9 } -var ( - oidExtKeyUsageAny = asn1.ObjectIdentifier{2, 5, 29, 37, 0} - oidExtKeyUsageServerAuth = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 1} - oidExtKeyUsageClientAuth = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 2} - oidExtKeyUsageCodeSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 3} - oidExtKeyUsageEmailProtection = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 4} - oidExtKeyUsageIPSECEndSystem = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 5} - oidExtKeyUsageIPSECTunnel = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 6} - oidExtKeyUsageIPSECUser = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 7} - oidExtKeyUsageTimeStamping = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 8} - oidExtKeyUsageOCSPSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 9} - oidExtKeyUsageMicrosoftServerGatedCrypto = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 311, 10, 3, 3} - oidExtKeyUsageNetscapeServerGatedCrypto = asn1.ObjectIdentifier{2, 16, 840, 1, 113730, 4, 1} -) - -// ExtKeyUsage represents an extended set of actions that are valid for a given key. -// Each of the ExtKeyUsage* constants define a unique action. -type ExtKeyUsage int - -const ( - ExtKeyUsageAny ExtKeyUsage = iota - ExtKeyUsageServerAuth - ExtKeyUsageClientAuth - ExtKeyUsageCodeSigning - ExtKeyUsageEmailProtection - ExtKeyUsageIPSECEndSystem - ExtKeyUsageIPSECTunnel - ExtKeyUsageIPSECUser - ExtKeyUsageTimeStamping - ExtKeyUsageOCSPSigning - ExtKeyUsageMicrosoftServerGatedCrypto - ExtKeyUsageNetscapeServerGatedCrypto -) - -// extKeyUsageOIDs contains the mapping between an ExtKeyUsage and its OID. -var extKeyUsageOIDs = []struct { - extKeyUsage ExtKeyUsage - oid asn1.ObjectIdentifier -}{ - {ExtKeyUsageAny, oidExtKeyUsageAny}, - {ExtKeyUsageServerAuth, oidExtKeyUsageServerAuth}, - {ExtKeyUsageClientAuth, oidExtKeyUsageClientAuth}, - {ExtKeyUsageCodeSigning, oidExtKeyUsageCodeSigning}, - {ExtKeyUsageEmailProtection, oidExtKeyUsageEmailProtection}, - {ExtKeyUsageIPSECEndSystem, oidExtKeyUsageIPSECEndSystem}, - {ExtKeyUsageIPSECTunnel, oidExtKeyUsageIPSECTunnel}, - {ExtKeyUsageIPSECUser, oidExtKeyUsageIPSECUser}, - {ExtKeyUsageTimeStamping, oidExtKeyUsageTimeStamping}, - {ExtKeyUsageOCSPSigning, oidExtKeyUsageOCSPSigning}, - {ExtKeyUsageMicrosoftServerGatedCrypto, oidExtKeyUsageMicrosoftServerGatedCrypto}, - {ExtKeyUsageNetscapeServerGatedCrypto, oidExtKeyUsageNetscapeServerGatedCrypto}, -} - -func extKeyUsageFromOID(oid asn1.ObjectIdentifier) (eku ExtKeyUsage, ok bool) { - for _, pair := range extKeyUsageOIDs { - if oid.Equal(pair.oid) { - return pair.extKeyUsage, true - } - } - return -} - -func oidFromExtKeyUsage(eku ExtKeyUsage) (oid asn1.ObjectIdentifier, ok bool) { - for _, pair := range extKeyUsageOIDs { - if eku == pair.extKeyUsage { - return pair.oid, true - } - } - return -} - -// A Certificate represents an X.509 certificate. -type Certificate struct { - Raw []byte // Complete ASN.1 DER content (certificate, signature algorithm and signature). - RawTBSCertificate []byte // Certificate part of raw ASN.1 DER content. - RawSubjectPublicKeyInfo []byte // DER encoded SubjectPublicKeyInfo. - RawSubject []byte // DER encoded Subject - RawIssuer []byte // DER encoded Issuer - - Signature []byte - SignatureAlgorithm SignatureAlgorithm - - PublicKeyAlgorithm PublicKeyAlgorithm - PublicKey interface{} - - Version int - SerialNumber *big.Int - Issuer pkix.Name - Subject pkix.Name - NotBefore, NotAfter time.Time // Validity bounds. - KeyUsage KeyUsage - - // Extensions contains raw X.509 extensions. When parsing certificates, - // this can be used to extract non-critical extensions that are not - // parsed by this package. When marshaling certificates, the Extensions - // field is ignored, see ExtraExtensions. - Extensions []pkix.Extension - - // ExtraExtensions contains extensions to be copied, raw, into any - // marshaled certificates. Values override any extensions that would - // otherwise be produced based on the other fields. The ExtraExtensions - // field is not populated when parsing certificates, see Extensions. - ExtraExtensions []pkix.Extension - - ExtKeyUsage []ExtKeyUsage // Sequence of extended key usages. - UnknownExtKeyUsage []asn1.ObjectIdentifier // Encountered extended key usages unknown to this package. - - BasicConstraintsValid bool // if true then the next two fields are valid. - IsCA bool - MaxPathLen int - - SubjectKeyId []byte - AuthorityKeyId []byte - - // RFC 5280, 4.2.2.1 (Authority Information Access) - OCSPServer []string - IssuingCertificateURL []string - - // Subject Alternate Name values - DNSNames []string - EmailAddresses []string - IPAddresses []net.IP - - // Name constraints - PermittedDNSDomainsCritical bool // if true then the name constraints are marked critical. - PermittedDNSDomains []string - - // CRL Distribution Points - CRLDistributionPoints []string - - PolicyIdentifiers []asn1.ObjectIdentifier -} - -// ErrUnsupportedAlgorithm results from attempting to perform an operation that -// involves algorithms that are not currently implemented. -var ErrUnsupportedAlgorithm = errors.New("x509: cannot verify signature: algorithm unimplemented") - -// ConstraintViolationError results when a requested usage is not permitted by -// a certificate. For example: checking a signature when the public key isn't a -// certificate signing key. -type ConstraintViolationError struct{} - -func (ConstraintViolationError) Error() string { - return "x509: invalid signature: parent certificate cannot sign this kind of certificate" -} - -func (c *Certificate) Equal(other *Certificate) bool { - return bytes.Equal(c.Raw, other.Raw) -} - -// Entrust have a broken root certificate (CN=Entrust.net Certification -// Authority (2048)) which isn't marked as a CA certificate and is thus invalid -// according to PKIX. -// We recognise this certificate by its SubjectPublicKeyInfo and exempt it -// from the Basic Constraints requirement. -// See http://www.entrust.net/knowledge-base/technote.cfm?tn=7869 -// -// TODO(agl): remove this hack once their reissued root is sufficiently -// widespread. -var entrustBrokenSPKI = []byte{ - 0x30, 0x82, 0x01, 0x22, 0x30, 0x0d, 0x06, 0x09, - 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, - 0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00, - 0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01, - 0x00, 0x97, 0xa3, 0x2d, 0x3c, 0x9e, 0xde, 0x05, - 0xda, 0x13, 0xc2, 0x11, 0x8d, 0x9d, 0x8e, 0xe3, - 0x7f, 0xc7, 0x4b, 0x7e, 0x5a, 0x9f, 0xb3, 0xff, - 0x62, 0xab, 0x73, 0xc8, 0x28, 0x6b, 0xba, 0x10, - 0x64, 0x82, 0x87, 0x13, 0xcd, 0x57, 0x18, 0xff, - 0x28, 0xce, 0xc0, 0xe6, 0x0e, 0x06, 0x91, 0x50, - 0x29, 0x83, 0xd1, 0xf2, 0xc3, 0x2a, 0xdb, 0xd8, - 0xdb, 0x4e, 0x04, 0xcc, 0x00, 0xeb, 0x8b, 0xb6, - 0x96, 0xdc, 0xbc, 0xaa, 0xfa, 0x52, 0x77, 0x04, - 0xc1, 0xdb, 0x19, 0xe4, 0xae, 0x9c, 0xfd, 0x3c, - 0x8b, 0x03, 0xef, 0x4d, 0xbc, 0x1a, 0x03, 0x65, - 0xf9, 0xc1, 0xb1, 0x3f, 0x72, 0x86, 0xf2, 0x38, - 0xaa, 0x19, 0xae, 0x10, 0x88, 0x78, 0x28, 0xda, - 0x75, 0xc3, 0x3d, 0x02, 0x82, 0x02, 0x9c, 0xb9, - 0xc1, 0x65, 0x77, 0x76, 0x24, 0x4c, 0x98, 0xf7, - 0x6d, 0x31, 0x38, 0xfb, 0xdb, 0xfe, 0xdb, 0x37, - 0x02, 0x76, 0xa1, 0x18, 0x97, 0xa6, 0xcc, 0xde, - 0x20, 0x09, 0x49, 0x36, 0x24, 0x69, 0x42, 0xf6, - 0xe4, 0x37, 0x62, 0xf1, 0x59, 0x6d, 0xa9, 0x3c, - 0xed, 0x34, 0x9c, 0xa3, 0x8e, 0xdb, 0xdc, 0x3a, - 0xd7, 0xf7, 0x0a, 0x6f, 0xef, 0x2e, 0xd8, 0xd5, - 0x93, 0x5a, 0x7a, 0xed, 0x08, 0x49, 0x68, 0xe2, - 0x41, 0xe3, 0x5a, 0x90, 0xc1, 0x86, 0x55, 0xfc, - 0x51, 0x43, 0x9d, 0xe0, 0xb2, 0xc4, 0x67, 0xb4, - 0xcb, 0x32, 0x31, 0x25, 0xf0, 0x54, 0x9f, 0x4b, - 0xd1, 0x6f, 0xdb, 0xd4, 0xdd, 0xfc, 0xaf, 0x5e, - 0x6c, 0x78, 0x90, 0x95, 0xde, 0xca, 0x3a, 0x48, - 0xb9, 0x79, 0x3c, 0x9b, 0x19, 0xd6, 0x75, 0x05, - 0xa0, 0xf9, 0x88, 0xd7, 0xc1, 0xe8, 0xa5, 0x09, - 0xe4, 0x1a, 0x15, 0xdc, 0x87, 0x23, 0xaa, 0xb2, - 0x75, 0x8c, 0x63, 0x25, 0x87, 0xd8, 0xf8, 0x3d, - 0xa6, 0xc2, 0xcc, 0x66, 0xff, 0xa5, 0x66, 0x68, - 0x55, 0x02, 0x03, 0x01, 0x00, 0x01, -} - -// CheckSignatureFrom verifies that the signature on c is a valid signature -// from parent. -func (c *Certificate) CheckSignatureFrom(parent *Certificate) (err error) { - // RFC 5280, 4.2.1.9: - // "If the basic constraints extension is not present in a version 3 - // certificate, or the extension is present but the cA boolean is not - // asserted, then the certified public key MUST NOT be used to verify - // certificate signatures." - // (except for Entrust, see comment above entrustBrokenSPKI) - if (parent.Version == 3 && !parent.BasicConstraintsValid || - parent.BasicConstraintsValid && !parent.IsCA) && - !bytes.Equal(c.RawSubjectPublicKeyInfo, entrustBrokenSPKI) { - return ConstraintViolationError{} - } - - if parent.KeyUsage != 0 && parent.KeyUsage&KeyUsageCertSign == 0 { - return ConstraintViolationError{} - } - - if parent.PublicKeyAlgorithm == UnknownPublicKeyAlgorithm { - return ErrUnsupportedAlgorithm - } - - // TODO(agl): don't ignore the path length constraint. - - return parent.CheckSignature(c.SignatureAlgorithm, c.RawTBSCertificate, c.Signature) -} - -// CheckSignature verifies that signature is a valid signature over signed from -// c's public key. -func (c *Certificate) CheckSignature(algo SignatureAlgorithm, signed, signature []byte) (err error) { - var hashType crypto.Hash - - switch algo { - case SHA1WithRSA, DSAWithSHA1, ECDSAWithSHA1: - hashType = crypto.SHA1 - case SHA256WithRSA, DSAWithSHA256, ECDSAWithSHA256: - hashType = crypto.SHA256 - case SHA384WithRSA, ECDSAWithSHA384: - hashType = crypto.SHA384 - case SHA512WithRSA, ECDSAWithSHA512: - hashType = crypto.SHA512 - default: - return ErrUnsupportedAlgorithm - } - - if !hashType.Available() { - return ErrUnsupportedAlgorithm - } - h := hashType.New() - - h.Write(signed) - digest := h.Sum(nil) - - switch pub := c.PublicKey.(type) { - case *rsa.PublicKey: - return rsa.VerifyPKCS1v15(pub, hashType, digest, signature) - case *dsa.PublicKey: - dsaSig := new(dsaSignature) - if _, err := asn1.Unmarshal(signature, dsaSig); err != nil { - return err - } - if dsaSig.R.Sign() <= 0 || dsaSig.S.Sign() <= 0 { - return errors.New("x509: DSA signature contained zero or negative values") - } - if !dsa.Verify(pub, digest, dsaSig.R, dsaSig.S) { - return errors.New("x509: DSA verification failure") - } - return - case *ecdsa.PublicKey: - ecdsaSig := new(ecdsaSignature) - if _, err := asn1.Unmarshal(signature, ecdsaSig); err != nil { - return err - } - if ecdsaSig.R.Sign() <= 0 || ecdsaSig.S.Sign() <= 0 { - return errors.New("x509: ECDSA signature contained zero or negative values") - } - if !ecdsa.Verify(pub, digest, ecdsaSig.R, ecdsaSig.S) { - return errors.New("x509: ECDSA verification failure") - } - return - } - return ErrUnsupportedAlgorithm -} - -// CheckCRLSignature checks that the signature in crl is from c. -func (c *Certificate) CheckCRLSignature(crl *pkix.CertificateList) (err error) { - algo := getSignatureAlgorithmFromOID(crl.SignatureAlgorithm.Algorithm) - return c.CheckSignature(algo, crl.TBSCertList.Raw, crl.SignatureValue.RightAlign()) -} - -// START CT CHANGES -type UnhandledCriticalExtension struct { - ID asn1.ObjectIdentifier -} - -func (h UnhandledCriticalExtension) Error() string { - return fmt.Sprintf("x509: unhandled critical extension (%v)", h.ID) -} - -// END CT CHANGES - -type basicConstraints struct { - IsCA bool `asn1:"optional"` - MaxPathLen int `asn1:"optional,default:-1"` -} - -// RFC 5280 4.2.1.4 -type policyInformation struct { - Policy asn1.ObjectIdentifier - // policyQualifiers omitted -} - -// RFC 5280, 4.2.1.10 -type nameConstraints struct { - Permitted []generalSubtree `asn1:"optional,tag:0"` - Excluded []generalSubtree `asn1:"optional,tag:1"` -} - -type generalSubtree struct { - Name string `asn1:"tag:2,optional,ia5"` -} - -// RFC 5280, 4.2.2.1 -type authorityInfoAccess struct { - Method asn1.ObjectIdentifier - Location asn1.RawValue -} - -// RFC 5280, 4.2.1.14 -type distributionPoint struct { - DistributionPoint distributionPointName `asn1:"optional,tag:0"` - Reason asn1.BitString `asn1:"optional,tag:1"` - CRLIssuer asn1.RawValue `asn1:"optional,tag:2"` -} - -type distributionPointName struct { - FullName asn1.RawValue `asn1:"optional,tag:0"` - RelativeName pkix.RDNSequence `asn1:"optional,tag:1"` -} - -func parsePublicKey(algo PublicKeyAlgorithm, keyData *publicKeyInfo) (interface{}, error) { - asn1Data := keyData.PublicKey.RightAlign() - switch algo { - case RSA: - p := new(rsaPublicKey) - _, err := asn1.Unmarshal(asn1Data, p) - if err != nil { - return nil, err - } - - if p.N.Sign() <= 0 { - return nil, errors.New("x509: RSA modulus is not a positive number") - } - if p.E <= 0 { - return nil, errors.New("x509: RSA public exponent is not a positive number") - } - - pub := &rsa.PublicKey{ - E: p.E, - N: p.N, - } - return pub, nil - case DSA: - var p *big.Int - _, err := asn1.Unmarshal(asn1Data, &p) - if err != nil { - return nil, err - } - paramsData := keyData.Algorithm.Parameters.FullBytes - params := new(dsaAlgorithmParameters) - _, err = asn1.Unmarshal(paramsData, params) - if err != nil { - return nil, err - } - if p.Sign() <= 0 || params.P.Sign() <= 0 || params.Q.Sign() <= 0 || params.G.Sign() <= 0 { - return nil, errors.New("x509: zero or negative DSA parameter") - } - pub := &dsa.PublicKey{ - Parameters: dsa.Parameters{ - P: params.P, - Q: params.Q, - G: params.G, - }, - Y: p, - } - return pub, nil - case ECDSA: - paramsData := keyData.Algorithm.Parameters.FullBytes - namedCurveOID := new(asn1.ObjectIdentifier) - _, err := asn1.Unmarshal(paramsData, namedCurveOID) - if err != nil { - return nil, err - } - namedCurve := namedCurveFromOID(*namedCurveOID) - if namedCurve == nil { - return nil, errors.New("x509: unsupported elliptic curve") - } - x, y := elliptic.Unmarshal(namedCurve, asn1Data) - if x == nil { - return nil, errors.New("x509: failed to unmarshal elliptic curve point") - } - pub := &ecdsa.PublicKey{ - Curve: namedCurve, - X: x, - Y: y, - } - return pub, nil - default: - return nil, nil - } -} - -// START CT CHANGES - -// NonFatalErrors is an error type which can hold a number of other errors. -// It's used to collect a range of non-fatal errors which occur while parsing -// a certificate, that way we can still match on certs which technically are -// invalid. -type NonFatalErrors struct { - Errors []error -} - -// Adds an error to the list of errors contained by NonFatalErrors. -func (e *NonFatalErrors) AddError(err error) { - e.Errors = append(e.Errors, err) -} - -// Returns a string consisting of the values of Error() from all of the errors -// contained in |e| -func (e NonFatalErrors) Error() string { - r := "NonFatalErrors: " - for _, err := range e.Errors { - r += err.Error() + "; " - } - return r -} - -// Returns true if |e| contains at least one error -func (e *NonFatalErrors) HasError() bool { - return len(e.Errors) > 0 -} - -// END CT CHANGES - -func parseCertificate(in *certificate) (*Certificate, error) { - // START CT CHANGES - var nfe NonFatalErrors - // END CT CHANGES - - out := new(Certificate) - out.Raw = in.Raw - out.RawTBSCertificate = in.TBSCertificate.Raw - out.RawSubjectPublicKeyInfo = in.TBSCertificate.PublicKey.Raw - out.RawSubject = in.TBSCertificate.Subject.FullBytes - out.RawIssuer = in.TBSCertificate.Issuer.FullBytes - - out.Signature = in.SignatureValue.RightAlign() - out.SignatureAlgorithm = - getSignatureAlgorithmFromOID(in.TBSCertificate.SignatureAlgorithm.Algorithm) - - out.PublicKeyAlgorithm = - getPublicKeyAlgorithmFromOID(in.TBSCertificate.PublicKey.Algorithm.Algorithm) - var err error - out.PublicKey, err = parsePublicKey(out.PublicKeyAlgorithm, &in.TBSCertificate.PublicKey) - if err != nil { - return nil, err - } - - if in.TBSCertificate.SerialNumber.Sign() < 0 { - // START CT CHANGES - nfe.AddError(errors.New("x509: negative serial number")) - // END CT CHANGES - } - - out.Version = in.TBSCertificate.Version + 1 - out.SerialNumber = in.TBSCertificate.SerialNumber - - var issuer, subject pkix.RDNSequence - if _, err := asn1.Unmarshal(in.TBSCertificate.Subject.FullBytes, &subject); err != nil { - return nil, err - } - if _, err := asn1.Unmarshal(in.TBSCertificate.Issuer.FullBytes, &issuer); err != nil { - return nil, err - } - - out.Issuer.FillFromRDNSequence(&issuer) - out.Subject.FillFromRDNSequence(&subject) - - out.NotBefore = in.TBSCertificate.Validity.NotBefore - out.NotAfter = in.TBSCertificate.Validity.NotAfter - - for _, e := range in.TBSCertificate.Extensions { - out.Extensions = append(out.Extensions, e) - - if len(e.Id) == 4 && e.Id[0] == 2 && e.Id[1] == 5 && e.Id[2] == 29 { - switch e.Id[3] { - case 15: - // RFC 5280, 4.2.1.3 - var usageBits asn1.BitString - _, err := asn1.Unmarshal(e.Value, &usageBits) - - if err == nil { - var usage int - for i := 0; i < 9; i++ { - if usageBits.At(i) != 0 { - usage |= 1 << uint(i) - } - } - out.KeyUsage = KeyUsage(usage) - continue - } - case 19: - // RFC 5280, 4.2.1.9 - var constraints basicConstraints - _, err := asn1.Unmarshal(e.Value, &constraints) - - if err == nil { - out.BasicConstraintsValid = true - out.IsCA = constraints.IsCA - out.MaxPathLen = constraints.MaxPathLen - continue - } - case 17: - // RFC 5280, 4.2.1.6 - - // SubjectAltName ::= GeneralNames - // - // GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName - // - // GeneralName ::= CHOICE { - // otherName [0] OtherName, - // rfc822Name [1] IA5String, - // dNSName [2] IA5String, - // x400Address [3] ORAddress, - // directoryName [4] Name, - // ediPartyName [5] EDIPartyName, - // uniformResourceIdentifier [6] IA5String, - // iPAddress [7] OCTET STRING, - // registeredID [8] OBJECT IDENTIFIER } - var seq asn1.RawValue - _, err := asn1.Unmarshal(e.Value, &seq) - if err != nil { - return nil, err - } - if !seq.IsCompound || seq.Tag != 16 || seq.Class != 0 { - return nil, asn1.StructuralError{Msg: "bad SAN sequence"} - } - - parsedName := false - - rest := seq.Bytes - for len(rest) > 0 { - var v asn1.RawValue - rest, err = asn1.Unmarshal(rest, &v) - if err != nil { - return nil, err - } - switch v.Tag { - case 1: - out.EmailAddresses = append(out.EmailAddresses, string(v.Bytes)) - parsedName = true - case 2: - out.DNSNames = append(out.DNSNames, string(v.Bytes)) - parsedName = true - case 7: - switch len(v.Bytes) { - case net.IPv4len, net.IPv6len: - out.IPAddresses = append(out.IPAddresses, v.Bytes) - default: - // START CT CHANGES - nfe.AddError(fmt.Errorf("x509: certificate contained IP address of length %d : %v", len(v.Bytes), v.Bytes)) - // END CT CHANGES - } - } - } - - if parsedName { - continue - } - // If we didn't parse any of the names then we - // fall through to the critical check below. - - case 30: - // RFC 5280, 4.2.1.10 - - // NameConstraints ::= SEQUENCE { - // permittedSubtrees [0] GeneralSubtrees OPTIONAL, - // excludedSubtrees [1] GeneralSubtrees OPTIONAL } - // - // GeneralSubtrees ::= SEQUENCE SIZE (1..MAX) OF GeneralSubtree - // - // GeneralSubtree ::= SEQUENCE { - // base GeneralName, - // minimum [0] BaseDistance DEFAULT 0, - // maximum [1] BaseDistance OPTIONAL } - // - // BaseDistance ::= INTEGER (0..MAX) - - var constraints nameConstraints - _, err := asn1.Unmarshal(e.Value, &constraints) - if err != nil { - return nil, err - } - - if len(constraints.Excluded) > 0 && e.Critical { - // START CT CHANGES - nfe.AddError(UnhandledCriticalExtension{e.Id}) - // END CT CHANGES - } - - for _, subtree := range constraints.Permitted { - if len(subtree.Name) == 0 { - if e.Critical { - // START CT CHANGES - nfe.AddError(UnhandledCriticalExtension{e.Id}) - // END CT CHANGES - } - continue - } - out.PermittedDNSDomains = append(out.PermittedDNSDomains, subtree.Name) - } - continue - - case 31: - // RFC 5280, 4.2.1.14 - - // CRLDistributionPoints ::= SEQUENCE SIZE (1..MAX) OF DistributionPoint - // - // DistributionPoint ::= SEQUENCE { - // distributionPoint [0] DistributionPointName OPTIONAL, - // reasons [1] ReasonFlags OPTIONAL, - // cRLIssuer [2] GeneralNames OPTIONAL } - // - // DistributionPointName ::= CHOICE { - // fullName [0] GeneralNames, - // nameRelativeToCRLIssuer [1] RelativeDistinguishedName } - - var cdp []distributionPoint - _, err := asn1.Unmarshal(e.Value, &cdp) - if err != nil { - return nil, err - } - - for _, dp := range cdp { - var n asn1.RawValue - _, err = asn1.Unmarshal(dp.DistributionPoint.FullName.Bytes, &n) - if err != nil { - return nil, err - } - - if n.Tag == 6 { - out.CRLDistributionPoints = append(out.CRLDistributionPoints, string(n.Bytes)) - } - } - continue - - case 35: - // RFC 5280, 4.2.1.1 - var a authKeyId - _, err = asn1.Unmarshal(e.Value, &a) - if err != nil { - return nil, err - } - out.AuthorityKeyId = a.Id - continue - - case 37: - // RFC 5280, 4.2.1.12. Extended Key Usage - - // id-ce-extKeyUsage OBJECT IDENTIFIER ::= { id-ce 37 } - // - // ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId - // - // KeyPurposeId ::= OBJECT IDENTIFIER - - var keyUsage []asn1.ObjectIdentifier - _, err = asn1.Unmarshal(e.Value, &keyUsage) - if err != nil { - return nil, err - } - - for _, u := range keyUsage { - if extKeyUsage, ok := extKeyUsageFromOID(u); ok { - out.ExtKeyUsage = append(out.ExtKeyUsage, extKeyUsage) - } else { - out.UnknownExtKeyUsage = append(out.UnknownExtKeyUsage, u) - } - } - - continue - - case 14: - // RFC 5280, 4.2.1.2 - var keyid []byte - _, err = asn1.Unmarshal(e.Value, &keyid) - if err != nil { - return nil, err - } - out.SubjectKeyId = keyid - continue - - case 32: - // RFC 5280 4.2.1.4: Certificate Policies - var policies []policyInformation - if _, err = asn1.Unmarshal(e.Value, &policies); err != nil { - return nil, err - } - out.PolicyIdentifiers = make([]asn1.ObjectIdentifier, len(policies)) - for i, policy := range policies { - out.PolicyIdentifiers[i] = policy.Policy - } - } - } else if e.Id.Equal(oidExtensionAuthorityInfoAccess) { - // RFC 5280 4.2.2.1: Authority Information Access - var aia []authorityInfoAccess - if _, err = asn1.Unmarshal(e.Value, &aia); err != nil { - return nil, err - } - - for _, v := range aia { - // GeneralName: uniformResourceIdentifier [6] IA5String - if v.Location.Tag != 6 { - continue - } - if v.Method.Equal(oidAuthorityInfoAccessOcsp) { - out.OCSPServer = append(out.OCSPServer, string(v.Location.Bytes)) - } else if v.Method.Equal(oidAuthorityInfoAccessIssuers) { - out.IssuingCertificateURL = append(out.IssuingCertificateURL, string(v.Location.Bytes)) - } - } - } - - if e.Critical { - // START CT CHANGES - nfe.AddError(UnhandledCriticalExtension{e.Id}) - // END CT CHANGES - } - } - // START CT CHANGES - if nfe.HasError() { - return out, nfe - } - // END CT CHANGES - return out, nil -} - -// START CT CHANGES - -// ParseTBSCertificate parses a single TBSCertificate from the given ASN.1 DER data. -// The parsed data is returned in a Certificate struct for ease of access. -func ParseTBSCertificate(asn1Data []byte) (*Certificate, error) { - var tbsCert tbsCertificate - rest, err := asn1.Unmarshal(asn1Data, &tbsCert) - if err != nil { - return nil, err - } - if len(rest) > 0 { - return nil, asn1.SyntaxError{Msg: "trailing data"} - } - return parseCertificate(&certificate{ - Raw: tbsCert.Raw, - TBSCertificate: tbsCert}) -} - -// END CT CHANGES - -// ParseCertificate parses a single certificate from the given ASN.1 DER data. -func ParseCertificate(asn1Data []byte) (*Certificate, error) { - var cert certificate - rest, err := asn1.Unmarshal(asn1Data, &cert) - if err != nil { - return nil, err - } - if len(rest) > 0 { - return nil, asn1.SyntaxError{Msg: "trailing data"} - } - - return parseCertificate(&cert) -} - -// ParseCertificates parses one or more certificates from the given ASN.1 DER -// data. The certificates must be concatenated with no intermediate padding. -func ParseCertificates(asn1Data []byte) ([]*Certificate, error) { - var v []*certificate - - for len(asn1Data) > 0 { - cert := new(certificate) - var err error - asn1Data, err = asn1.Unmarshal(asn1Data, cert) - if err != nil { - return nil, err - } - v = append(v, cert) - } - - ret := make([]*Certificate, len(v)) - for i, ci := range v { - cert, err := parseCertificate(ci) - if err != nil { - return nil, err - } - ret[i] = cert - } - - return ret, nil -} - -func reverseBitsInAByte(in byte) byte { - b1 := in>>4 | in<<4 - b2 := b1>>2&0x33 | b1<<2&0xcc - b3 := b2>>1&0x55 | b2<<1&0xaa - return b3 -} - -var ( - oidExtensionSubjectKeyId = []int{2, 5, 29, 14} - oidExtensionKeyUsage = []int{2, 5, 29, 15} - oidExtensionExtendedKeyUsage = []int{2, 5, 29, 37} - oidExtensionAuthorityKeyId = []int{2, 5, 29, 35} - oidExtensionBasicConstraints = []int{2, 5, 29, 19} - oidExtensionSubjectAltName = []int{2, 5, 29, 17} - oidExtensionCertificatePolicies = []int{2, 5, 29, 32} - oidExtensionNameConstraints = []int{2, 5, 29, 30} - oidExtensionCRLDistributionPoints = []int{2, 5, 29, 31} - oidExtensionAuthorityInfoAccess = []int{1, 3, 6, 1, 5, 5, 7, 1, 1} -) - -var ( - oidAuthorityInfoAccessOcsp = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 48, 1} - oidAuthorityInfoAccessIssuers = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 48, 2} -) - -// oidNotInExtensions returns whether an extension with the given oid exists in -// extensions. -func oidInExtensions(oid asn1.ObjectIdentifier, extensions []pkix.Extension) bool { - for _, e := range extensions { - if e.Id.Equal(oid) { - return true - } - } - return false -} - -func buildExtensions(template *Certificate) (ret []pkix.Extension, err error) { - ret = make([]pkix.Extension, 10 /* maximum number of elements. */) - n := 0 - - if template.KeyUsage != 0 && - !oidInExtensions(oidExtensionKeyUsage, template.ExtraExtensions) { - ret[n].Id = oidExtensionKeyUsage - ret[n].Critical = true - - var a [2]byte - a[0] = reverseBitsInAByte(byte(template.KeyUsage)) - a[1] = reverseBitsInAByte(byte(template.KeyUsage >> 8)) - - l := 1 - if a[1] != 0 { - l = 2 - } - - ret[n].Value, err = asn1.Marshal(asn1.BitString{Bytes: a[0:l], BitLength: l * 8}) - if err != nil { - return - } - n++ - } - - if (len(template.ExtKeyUsage) > 0 || len(template.UnknownExtKeyUsage) > 0) && - !oidInExtensions(oidExtensionExtendedKeyUsage, template.ExtraExtensions) { - ret[n].Id = oidExtensionExtendedKeyUsage - - var oids []asn1.ObjectIdentifier - for _, u := range template.ExtKeyUsage { - if oid, ok := oidFromExtKeyUsage(u); ok { - oids = append(oids, oid) - } else { - panic("internal error") - } - } - - oids = append(oids, template.UnknownExtKeyUsage...) - - ret[n].Value, err = asn1.Marshal(oids) - if err != nil { - return - } - n++ - } - - if template.BasicConstraintsValid && !oidInExtensions(oidExtensionBasicConstraints, template.ExtraExtensions) { - ret[n].Id = oidExtensionBasicConstraints - ret[n].Value, err = asn1.Marshal(basicConstraints{template.IsCA, template.MaxPathLen}) - ret[n].Critical = true - if err != nil { - return - } - n++ - } - - if len(template.SubjectKeyId) > 0 && !oidInExtensions(oidExtensionSubjectKeyId, template.ExtraExtensions) { - ret[n].Id = oidExtensionSubjectKeyId - ret[n].Value, err = asn1.Marshal(template.SubjectKeyId) - if err != nil { - return - } - n++ - } - - if len(template.AuthorityKeyId) > 0 && !oidInExtensions(oidExtensionAuthorityKeyId, template.ExtraExtensions) { - ret[n].Id = oidExtensionAuthorityKeyId - ret[n].Value, err = asn1.Marshal(authKeyId{template.AuthorityKeyId}) - if err != nil { - return - } - n++ - } - - if (len(template.OCSPServer) > 0 || len(template.IssuingCertificateURL) > 0) && - !oidInExtensions(oidExtensionAuthorityInfoAccess, template.ExtraExtensions) { - ret[n].Id = oidExtensionAuthorityInfoAccess - var aiaValues []authorityInfoAccess - for _, name := range template.OCSPServer { - aiaValues = append(aiaValues, authorityInfoAccess{ - Method: oidAuthorityInfoAccessOcsp, - Location: asn1.RawValue{Tag: 6, Class: 2, Bytes: []byte(name)}, - }) - } - for _, name := range template.IssuingCertificateURL { - aiaValues = append(aiaValues, authorityInfoAccess{ - Method: oidAuthorityInfoAccessIssuers, - Location: asn1.RawValue{Tag: 6, Class: 2, Bytes: []byte(name)}, - }) - } - ret[n].Value, err = asn1.Marshal(aiaValues) - if err != nil { - return - } - n++ - } - - if (len(template.DNSNames) > 0 || len(template.EmailAddresses) > 0 || len(template.IPAddresses) > 0) && - !oidInExtensions(oidExtensionSubjectAltName, template.ExtraExtensions) { - ret[n].Id = oidExtensionSubjectAltName - var rawValues []asn1.RawValue - for _, name := range template.DNSNames { - rawValues = append(rawValues, asn1.RawValue{Tag: 2, Class: 2, Bytes: []byte(name)}) - } - for _, email := range template.EmailAddresses { - rawValues = append(rawValues, asn1.RawValue{Tag: 1, Class: 2, Bytes: []byte(email)}) - } - for _, rawIP := range template.IPAddresses { - // If possible, we always want to encode IPv4 addresses in 4 bytes. - ip := rawIP.To4() - if ip == nil { - ip = rawIP - } - rawValues = append(rawValues, asn1.RawValue{Tag: 7, Class: 2, Bytes: ip}) - } - ret[n].Value, err = asn1.Marshal(rawValues) - if err != nil { - return - } - n++ - } - - if len(template.PolicyIdentifiers) > 0 && - !oidInExtensions(oidExtensionCertificatePolicies, template.ExtraExtensions) { - ret[n].Id = oidExtensionCertificatePolicies - policies := make([]policyInformation, len(template.PolicyIdentifiers)) - for i, policy := range template.PolicyIdentifiers { - policies[i].Policy = policy - } - ret[n].Value, err = asn1.Marshal(policies) - if err != nil { - return - } - n++ - } - - if len(template.PermittedDNSDomains) > 0 && - !oidInExtensions(oidExtensionNameConstraints, template.ExtraExtensions) { - ret[n].Id = oidExtensionNameConstraints - ret[n].Critical = template.PermittedDNSDomainsCritical - - var out nameConstraints - out.Permitted = make([]generalSubtree, len(template.PermittedDNSDomains)) - for i, permitted := range template.PermittedDNSDomains { - out.Permitted[i] = generalSubtree{Name: permitted} - } - ret[n].Value, err = asn1.Marshal(out) - if err != nil { - return - } - n++ - } - - if len(template.CRLDistributionPoints) > 0 && - !oidInExtensions(oidExtensionCRLDistributionPoints, template.ExtraExtensions) { - ret[n].Id = oidExtensionCRLDistributionPoints - - var crlDp []distributionPoint - for _, name := range template.CRLDistributionPoints { - rawFullName, _ := asn1.Marshal(asn1.RawValue{Tag: 6, Class: 2, Bytes: []byte(name)}) - - dp := distributionPoint{ - DistributionPoint: distributionPointName{ - FullName: asn1.RawValue{Tag: 0, Class: 2, Bytes: rawFullName}, - }, - } - crlDp = append(crlDp, dp) - } - - ret[n].Value, err = asn1.Marshal(crlDp) - if err != nil { - return - } - n++ - } - - // Adding another extension here? Remember to update the maximum number - // of elements in the make() at the top of the function. - - return append(ret[:n], template.ExtraExtensions...), nil -} - -func subjectBytes(cert *Certificate) ([]byte, error) { - if len(cert.RawSubject) > 0 { - return cert.RawSubject, nil - } - - return asn1.Marshal(cert.Subject.ToRDNSequence()) -} - -// CreateCertificate creates a new certificate based on a template. The -// following members of template are used: SerialNumber, Subject, NotBefore, -// NotAfter, KeyUsage, ExtKeyUsage, UnknownExtKeyUsage, BasicConstraintsValid, -// IsCA, MaxPathLen, SubjectKeyId, DNSNames, PermittedDNSDomainsCritical, -// PermittedDNSDomains. -// -// The certificate is signed by parent. If parent is equal to template then the -// certificate is self-signed. The parameter pub is the public key of the -// signee and priv is the private key of the signer. -// -// The returned slice is the certificate in DER encoding. -// -// The only supported key types are RSA and ECDSA (*rsa.PublicKey or -// *ecdsa.PublicKey for pub, *rsa.PrivateKey or *ecdsa.PublicKey for priv). -func CreateCertificate(rand io.Reader, template, parent *Certificate, pub interface{}, priv interface{}) (cert []byte, err error) { - var publicKeyBytes []byte - var publicKeyAlgorithm pkix.AlgorithmIdentifier - - if publicKeyBytes, publicKeyAlgorithm, err = marshalPublicKey(pub); err != nil { - return nil, err - } - - var signatureAlgorithm pkix.AlgorithmIdentifier - var hashFunc crypto.Hash - - switch priv := priv.(type) { - case *rsa.PrivateKey: - signatureAlgorithm.Algorithm = oidSignatureSHA1WithRSA - hashFunc = crypto.SHA1 - case *ecdsa.PrivateKey: - switch priv.Curve { - case elliptic.P224(), elliptic.P256(): - hashFunc = crypto.SHA256 - signatureAlgorithm.Algorithm = oidSignatureECDSAWithSHA256 - case elliptic.P384(): - hashFunc = crypto.SHA384 - signatureAlgorithm.Algorithm = oidSignatureECDSAWithSHA384 - case elliptic.P521(): - hashFunc = crypto.SHA512 - signatureAlgorithm.Algorithm = oidSignatureECDSAWithSHA512 - default: - return nil, errors.New("x509: unknown elliptic curve") - } - default: - return nil, errors.New("x509: only RSA and ECDSA private keys supported") - } - - if err != nil { - return - } - - if len(parent.SubjectKeyId) > 0 { - template.AuthorityKeyId = parent.SubjectKeyId - } - - extensions, err := buildExtensions(template) - if err != nil { - return - } - - asn1Issuer, err := subjectBytes(parent) - if err != nil { - return - } - - asn1Subject, err := subjectBytes(template) - if err != nil { - return - } - - encodedPublicKey := asn1.BitString{BitLength: len(publicKeyBytes) * 8, Bytes: publicKeyBytes} - c := tbsCertificate{ - Version: 2, - SerialNumber: template.SerialNumber, - SignatureAlgorithm: signatureAlgorithm, - Issuer: asn1.RawValue{FullBytes: asn1Issuer}, - Validity: validity{template.NotBefore.UTC(), template.NotAfter.UTC()}, - Subject: asn1.RawValue{FullBytes: asn1Subject}, - PublicKey: publicKeyInfo{nil, publicKeyAlgorithm, encodedPublicKey}, - Extensions: extensions, - } - - tbsCertContents, err := asn1.Marshal(c) - if err != nil { - return - } - - c.Raw = tbsCertContents - - h := hashFunc.New() - h.Write(tbsCertContents) - digest := h.Sum(nil) - - var signature []byte - - switch priv := priv.(type) { - case *rsa.PrivateKey: - signature, err = rsa.SignPKCS1v15(rand, priv, hashFunc, digest) - case *ecdsa.PrivateKey: - var r, s *big.Int - if r, s, err = ecdsa.Sign(rand, priv, digest); err == nil { - signature, err = asn1.Marshal(ecdsaSignature{r, s}) - } - default: - panic("internal error") - } - - if err != nil { - return - } - - cert, err = asn1.Marshal(certificate{ - nil, - c, - signatureAlgorithm, - asn1.BitString{Bytes: signature, BitLength: len(signature) * 8}, - }) - return -} - -// pemCRLPrefix is the magic string that indicates that we have a PEM encoded -// CRL. -var pemCRLPrefix = []byte("-----BEGIN X509 CRL") - -// pemType is the type of a PEM encoded CRL. -var pemType = "X509 CRL" - -// ParseCRL parses a CRL from the given bytes. It's often the case that PEM -// encoded CRLs will appear where they should be DER encoded, so this function -// will transparently handle PEM encoding as long as there isn't any leading -// garbage. -func ParseCRL(crlBytes []byte) (certList *pkix.CertificateList, err error) { - if bytes.HasPrefix(crlBytes, pemCRLPrefix) { - block, _ := pem.Decode(crlBytes) - if block != nil && block.Type == pemType { - crlBytes = block.Bytes - } - } - return ParseDERCRL(crlBytes) -} - -// ParseDERCRL parses a DER encoded CRL from the given bytes. -func ParseDERCRL(derBytes []byte) (certList *pkix.CertificateList, err error) { - certList = new(pkix.CertificateList) - _, err = asn1.Unmarshal(derBytes, certList) - if err != nil { - certList = nil - } - return -} - -// CreateCRL returns a DER encoded CRL, signed by this Certificate, that -// contains the given list of revoked certificates. -// -// The only supported key type is RSA (*rsa.PrivateKey for priv). -func (c *Certificate) CreateCRL(rand io.Reader, priv interface{}, revokedCerts []pkix.RevokedCertificate, now, expiry time.Time) (crlBytes []byte, err error) { - rsaPriv, ok := priv.(*rsa.PrivateKey) - if !ok { - return nil, errors.New("x509: non-RSA private keys not supported") - } - tbsCertList := pkix.TBSCertificateList{ - Version: 2, - Signature: pkix.AlgorithmIdentifier{ - Algorithm: oidSignatureSHA1WithRSA, - }, - Issuer: c.Subject.ToRDNSequence(), - ThisUpdate: now.UTC(), - NextUpdate: expiry.UTC(), - RevokedCertificates: revokedCerts, - } - - tbsCertListContents, err := asn1.Marshal(tbsCertList) - if err != nil { - return - } - - h := sha1.New() - h.Write(tbsCertListContents) - digest := h.Sum(nil) - - signature, err := rsa.SignPKCS1v15(rand, rsaPriv, crypto.SHA1, digest) - if err != nil { - return - } - - return asn1.Marshal(pkix.CertificateList{ - TBSCertList: tbsCertList, - SignatureAlgorithm: pkix.AlgorithmIdentifier{ - Algorithm: oidSignatureSHA1WithRSA, - }, - SignatureValue: asn1.BitString{Bytes: signature, BitLength: len(signature) * 8}, - }) -} diff --git a/vendor/github.com/mreiferson/go-httpclient/.gitignore b/vendor/github.com/mreiferson/go-httpclient/.gitignore deleted file mode 100644 index dbec55fb6f4..00000000000 --- a/vendor/github.com/mreiferson/go-httpclient/.gitignore +++ /dev/null @@ -1 +0,0 @@ -*.sw[op] diff --git a/vendor/github.com/mreiferson/go-httpclient/.travis.yml b/vendor/github.com/mreiferson/go-httpclient/.travis.yml deleted file mode 100644 index ba1b6b7f9fe..00000000000 --- a/vendor/github.com/mreiferson/go-httpclient/.travis.yml +++ /dev/null @@ -1,11 +0,0 @@ -language: go -go: - - 1.1 -install: - - go get github.com/bmizerany/assert -script: - - pushd $TRAVIS_BUILD_DIR - - go test - - popd -notifications: - email: false diff --git a/vendor/github.com/mreiferson/go-httpclient/LICENSE b/vendor/github.com/mreiferson/go-httpclient/LICENSE deleted file mode 100644 index ba625cab099..00000000000 --- a/vendor/github.com/mreiferson/go-httpclient/LICENSE +++ /dev/null @@ -1,21 +0,0 @@ -The MIT License (MIT) - -Copyright (c) 2012 Matt Reiferson - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. diff --git a/vendor/github.com/mreiferson/go-httpclient/README.md b/vendor/github.com/mreiferson/go-httpclient/README.md deleted file mode 100644 index 6d0dbff945f..00000000000 --- a/vendor/github.com/mreiferson/go-httpclient/README.md +++ /dev/null @@ -1,41 +0,0 @@ -## go-httpclient - -**requires Go 1.1+** as of `v0.4.0` the API has been completely re-written for Go 1.1 (for a Go -1.0.x compatible release see [1adef50](https://github.com/mreiferson/go-httpclient/tree/1adef50)) - -[![Build -Status](https://secure.travis-ci.org/mreiferson/go-httpclient.png?branch=master)](http://travis-ci.org/mreiferson/go-httpclient) - -Provides an HTTP Transport that implements the `RoundTripper` interface and -can be used as a built in replacement for the standard library's, providing: - - * connection timeouts - * request timeouts - -This is a thin wrapper around `http.Transport` that sets dial timeouts and uses -Go's internal timer scheduler to call the Go 1.1+ `CancelRequest()` API. - -### Example - -```go -transport := &httpclient.Transport{ - ConnectTimeout: 1*time.Second, - RequestTimeout: 10*time.Second, - ResponseHeaderTimeout: 5*time.Second, -} -defer transport.Close() - -client := &http.Client{Transport: transport} -req, _ := http.NewRequest("GET", "http://127.0.0.1/test", nil) -resp, err := client.Do(req) -if err != nil { - return err -} -defer resp.Body.Close() -``` - -*Note:* you will want to re-use a single client object rather than creating one for each request, otherwise you will end up [leaking connections](https://code.google.com/p/go/issues/detail?id=4049#c3). - -### Reference Docs - -For API docs see [godoc](http://godoc.org/github.com/mreiferson/go-httpclient). diff --git a/vendor/github.com/mreiferson/go-httpclient/httpclient.go b/vendor/github.com/mreiferson/go-httpclient/httpclient.go deleted file mode 100644 index 89e018bffda..00000000000 --- a/vendor/github.com/mreiferson/go-httpclient/httpclient.go +++ /dev/null @@ -1,237 +0,0 @@ -/* -Provides an HTTP Transport that implements the `RoundTripper` interface and -can be used as a built in replacement for the standard library's, providing: - - * connection timeouts - * request timeouts - -This is a thin wrapper around `http.Transport` that sets dial timeouts and uses -Go's internal timer scheduler to call the Go 1.1+ `CancelRequest()` API. -*/ -package httpclient - -import ( - "crypto/tls" - "errors" - "io" - "net" - "net/http" - "net/url" - "sync" - "time" -) - -// returns the current version of the package -func Version() string { - return "0.4.1" -} - -// Transport implements the RoundTripper interface and can be used as a replacement -// for Go's built in http.Transport implementing end-to-end request timeouts. -// -// transport := &httpclient.Transport{ -// ConnectTimeout: 1*time.Second, -// ResponseHeaderTimeout: 5*time.Second, -// RequestTimeout: 10*time.Second, -// } -// defer transport.Close() -// -// client := &http.Client{Transport: transport} -// req, _ := http.NewRequest("GET", "http://127.0.0.1/test", nil) -// resp, err := client.Do(req) -// if err != nil { -// return err -// } -// defer resp.Body.Close() -// -type Transport struct { - // Proxy specifies a function to return a proxy for a given - // *http.Request. If the function returns a non-nil error, the - // request is aborted with the provided error. - // If Proxy is nil or returns a nil *url.URL, no proxy is used. - Proxy func(*http.Request) (*url.URL, error) - - // Dial specifies the dial function for creating TCP - // connections. This will override the Transport's ConnectTimeout and - // ReadWriteTimeout settings. - // If Dial is nil, a dialer is generated on demand matching the Transport's - // options. - Dial func(network, addr string) (net.Conn, error) - - // TLSClientConfig specifies the TLS configuration to use with - // tls.Client. If nil, the default configuration is used. - TLSClientConfig *tls.Config - - // DisableKeepAlives, if true, prevents re-use of TCP connections - // between different HTTP requests. - DisableKeepAlives bool - - // DisableCompression, if true, prevents the Transport from - // requesting compression with an "Accept-Encoding: gzip" - // request header when the Request contains no existing - // Accept-Encoding value. If the Transport requests gzip on - // its own and gets a gzipped response, it's transparently - // decoded in the Response.Body. However, if the user - // explicitly requested gzip it is not automatically - // uncompressed. - DisableCompression bool - - // MaxIdleConnsPerHost, if non-zero, controls the maximum idle - // (keep-alive) to keep per-host. If zero, - // http.DefaultMaxIdleConnsPerHost is used. - MaxIdleConnsPerHost int - - // ConnectTimeout, if non-zero, is the maximum amount of time a dial will wait for - // a connect to complete. - ConnectTimeout time.Duration - - // ResponseHeaderTimeout, if non-zero, specifies the amount of - // time to wait for a server's response headers after fully - // writing the request (including its body, if any). This - // time does not include the time to read the response body. - ResponseHeaderTimeout time.Duration - - // RequestTimeout, if non-zero, specifies the amount of time for the entire - // request to complete (including all of the above timeouts + entire response body). - // This should never be less than the sum total of the above two timeouts. - RequestTimeout time.Duration - - // ReadWriteTimeout, if non-zero, will set a deadline for every Read and - // Write operation on the request connection. - ReadWriteTimeout time.Duration - - // TCPWriteBufferSize, the size of the operating system's write - // buffer associated with the connection. - TCPWriteBufferSize int - - // TCPReadBuffserSize, the size of the operating system's read - // buffer associated with the connection. - TCPReadBufferSize int - - starter sync.Once - transport *http.Transport -} - -// Close cleans up the Transport, currently a no-op -func (t *Transport) Close() error { - return nil -} - -func (t *Transport) lazyStart() { - if t.Dial == nil { - t.Dial = func(netw, addr string) (net.Conn, error) { - c, err := net.DialTimeout(netw, addr, t.ConnectTimeout) - if err != nil { - return nil, err - } - - if t.TCPReadBufferSize != 0 || t.TCPWriteBufferSize != 0 { - if tcpCon, ok := c.(*net.TCPConn); ok { - if t.TCPWriteBufferSize != 0 { - if err = tcpCon.SetWriteBuffer(t.TCPWriteBufferSize); err != nil { - return nil, err - } - } - if t.TCPReadBufferSize != 0 { - if err = tcpCon.SetReadBuffer(t.TCPReadBufferSize); err != nil { - return nil, err - } - } - } else { - err = errors.New("Not Tcp Connection") - return nil, err - } - } - - if t.ReadWriteTimeout > 0 { - timeoutConn := &rwTimeoutConn{ - TCPConn: c.(*net.TCPConn), - rwTimeout: t.ReadWriteTimeout, - } - return timeoutConn, nil - } - return c, nil - } - } - - t.transport = &http.Transport{ - Dial: t.Dial, - Proxy: t.Proxy, - TLSClientConfig: t.TLSClientConfig, - DisableKeepAlives: t.DisableKeepAlives, - DisableCompression: t.DisableCompression, - MaxIdleConnsPerHost: t.MaxIdleConnsPerHost, - ResponseHeaderTimeout: t.ResponseHeaderTimeout, - } -} - -func (t *Transport) CancelRequest(req *http.Request) { - t.starter.Do(t.lazyStart) - - t.transport.CancelRequest(req) -} - -func (t *Transport) CloseIdleConnections() { - t.starter.Do(t.lazyStart) - - t.transport.CloseIdleConnections() -} - -func (t *Transport) RegisterProtocol(scheme string, rt http.RoundTripper) { - t.starter.Do(t.lazyStart) - - t.transport.RegisterProtocol(scheme, rt) -} - -func (t *Transport) RoundTrip(req *http.Request) (resp *http.Response, err error) { - t.starter.Do(t.lazyStart) - - if t.RequestTimeout > 0 { - timer := time.AfterFunc(t.RequestTimeout, func() { - t.transport.CancelRequest(req) - }) - - resp, err = t.transport.RoundTrip(req) - if err != nil { - timer.Stop() - } else { - resp.Body = &bodyCloseInterceptor{ReadCloser: resp.Body, timer: timer} - } - } else { - resp, err = t.transport.RoundTrip(req) - } - - return -} - -type bodyCloseInterceptor struct { - io.ReadCloser - timer *time.Timer -} - -func (bci *bodyCloseInterceptor) Close() error { - bci.timer.Stop() - return bci.ReadCloser.Close() -} - -// A net.Conn that sets a deadline for every Read or Write operation -type rwTimeoutConn struct { - *net.TCPConn - rwTimeout time.Duration -} - -func (c *rwTimeoutConn) Read(b []byte) (int, error) { - err := c.TCPConn.SetDeadline(time.Now().Add(c.rwTimeout)) - if err != nil { - return 0, err - } - return c.TCPConn.Read(b) -} - -func (c *rwTimeoutConn) Write(b []byte) (int, error) { - err := c.TCPConn.SetDeadline(time.Now().Add(c.rwTimeout)) - if err != nil { - return 0, err - } - return c.TCPConn.Write(b) -} diff --git a/vendor/golang.org/x/crypto/bcrypt/bcrypt.go b/vendor/golang.org/x/crypto/bcrypt/bcrypt.go index 8cc35da0369..57d85fa5edf 100644 --- a/vendor/golang.org/x/crypto/bcrypt/bcrypt.go +++ b/vendor/golang.org/x/crypto/bcrypt/bcrypt.go @@ -241,11 +241,11 @@ func (p *hashed) Hash() []byte { n = 3 } arr[n] = '$' - n += 1 + n++ copy(arr[n:], []byte(fmt.Sprintf("%02d", p.cost))) n += 2 arr[n] = '$' - n += 1 + n++ copy(arr[n:], p.salt) n += encodedSaltSize copy(arr[n:], p.hash) diff --git a/vendor/golang.org/x/crypto/cryptobyte/BUILD b/vendor/golang.org/x/crypto/cryptobyte/BUILD new file mode 100644 index 00000000000..e10f5ce308a --- /dev/null +++ b/vendor/golang.org/x/crypto/cryptobyte/BUILD @@ -0,0 +1,30 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +go_library( + name = "go_default_library", + srcs = [ + "asn1.go", + "builder.go", + "string.go", + ], + importpath = "golang.org/x/crypto/cryptobyte", + visibility = ["//visibility:public"], + deps = ["//vendor/golang.org/x/crypto/cryptobyte/asn1:go_default_library"], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [ + ":package-srcs", + "//vendor/golang.org/x/crypto/cryptobyte/asn1:all-srcs", + ], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/vendor/golang.org/x/crypto/cryptobyte/asn1.go b/vendor/golang.org/x/crypto/cryptobyte/asn1.go new file mode 100644 index 00000000000..88ec8b4fbf8 --- /dev/null +++ b/vendor/golang.org/x/crypto/cryptobyte/asn1.go @@ -0,0 +1,732 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package cryptobyte + +import ( + encoding_asn1 "encoding/asn1" + "fmt" + "math/big" + "reflect" + "time" + + "golang.org/x/crypto/cryptobyte/asn1" +) + +// This file contains ASN.1-related methods for String and Builder. + +// Builder + +// AddASN1Int64 appends a DER-encoded ASN.1 INTEGER. +func (b *Builder) AddASN1Int64(v int64) { + b.addASN1Signed(asn1.INTEGER, v) +} + +// AddASN1Enum appends a DER-encoded ASN.1 ENUMERATION. +func (b *Builder) AddASN1Enum(v int64) { + b.addASN1Signed(asn1.ENUM, v) +} + +func (b *Builder) addASN1Signed(tag asn1.Tag, v int64) { + b.AddASN1(tag, func(c *Builder) { + length := 1 + for i := v; i >= 0x80 || i < -0x80; i >>= 8 { + length++ + } + + for ; length > 0; length-- { + i := v >> uint((length-1)*8) & 0xff + c.AddUint8(uint8(i)) + } + }) +} + +// AddASN1Uint64 appends a DER-encoded ASN.1 INTEGER. +func (b *Builder) AddASN1Uint64(v uint64) { + b.AddASN1(asn1.INTEGER, func(c *Builder) { + length := 1 + for i := v; i >= 0x80; i >>= 8 { + length++ + } + + for ; length > 0; length-- { + i := v >> uint((length-1)*8) & 0xff + c.AddUint8(uint8(i)) + } + }) +} + +// AddASN1BigInt appends a DER-encoded ASN.1 INTEGER. +func (b *Builder) AddASN1BigInt(n *big.Int) { + if b.err != nil { + return + } + + b.AddASN1(asn1.INTEGER, func(c *Builder) { + if n.Sign() < 0 { + // A negative number has to be converted to two's-complement form. So we + // invert and subtract 1. If the most-significant-bit isn't set then + // we'll need to pad the beginning with 0xff in order to keep the number + // negative. + nMinus1 := new(big.Int).Neg(n) + nMinus1.Sub(nMinus1, bigOne) + bytes := nMinus1.Bytes() + for i := range bytes { + bytes[i] ^= 0xff + } + if bytes[0]&0x80 == 0 { + c.add(0xff) + } + c.add(bytes...) + } else if n.Sign() == 0 { + c.add(0) + } else { + bytes := n.Bytes() + if bytes[0]&0x80 != 0 { + c.add(0) + } + c.add(bytes...) + } + }) +} + +// AddASN1OctetString appends a DER-encoded ASN.1 OCTET STRING. +func (b *Builder) AddASN1OctetString(bytes []byte) { + b.AddASN1(asn1.OCTET_STRING, func(c *Builder) { + c.AddBytes(bytes) + }) +} + +const generalizedTimeFormatStr = "20060102150405Z0700" + +// AddASN1GeneralizedTime appends a DER-encoded ASN.1 GENERALIZEDTIME. +func (b *Builder) AddASN1GeneralizedTime(t time.Time) { + if t.Year() < 0 || t.Year() > 9999 { + b.err = fmt.Errorf("cryptobyte: cannot represent %v as a GeneralizedTime", t) + return + } + b.AddASN1(asn1.GeneralizedTime, func(c *Builder) { + c.AddBytes([]byte(t.Format(generalizedTimeFormatStr))) + }) +} + +// AddASN1BitString appends a DER-encoded ASN.1 BIT STRING. This does not +// support BIT STRINGs that are not a whole number of bytes. +func (b *Builder) AddASN1BitString(data []byte) { + b.AddASN1(asn1.BIT_STRING, func(b *Builder) { + b.AddUint8(0) + b.AddBytes(data) + }) +} + +func (b *Builder) addBase128Int(n int64) { + var length int + if n == 0 { + length = 1 + } else { + for i := n; i > 0; i >>= 7 { + length++ + } + } + + for i := length - 1; i >= 0; i-- { + o := byte(n >> uint(i*7)) + o &= 0x7f + if i != 0 { + o |= 0x80 + } + + b.add(o) + } +} + +func isValidOID(oid encoding_asn1.ObjectIdentifier) bool { + if len(oid) < 2 { + return false + } + + if oid[0] > 2 || (oid[0] <= 1 && oid[1] >= 40) { + return false + } + + for _, v := range oid { + if v < 0 { + return false + } + } + + return true +} + +func (b *Builder) AddASN1ObjectIdentifier(oid encoding_asn1.ObjectIdentifier) { + b.AddASN1(asn1.OBJECT_IDENTIFIER, func(b *Builder) { + if !isValidOID(oid) { + b.err = fmt.Errorf("cryptobyte: invalid OID: %v", oid) + return + } + + b.addBase128Int(int64(oid[0])*40 + int64(oid[1])) + for _, v := range oid[2:] { + b.addBase128Int(int64(v)) + } + }) +} + +func (b *Builder) AddASN1Boolean(v bool) { + b.AddASN1(asn1.BOOLEAN, func(b *Builder) { + if v { + b.AddUint8(0xff) + } else { + b.AddUint8(0) + } + }) +} + +func (b *Builder) AddASN1NULL() { + b.add(uint8(asn1.NULL), 0) +} + +// MarshalASN1 calls encoding_asn1.Marshal on its input and appends the result if +// successful or records an error if one occurred. +func (b *Builder) MarshalASN1(v interface{}) { + // NOTE(martinkr): This is somewhat of a hack to allow propagation of + // encoding_asn1.Marshal errors into Builder.err. N.B. if you call MarshalASN1 with a + // value embedded into a struct, its tag information is lost. + if b.err != nil { + return + } + bytes, err := encoding_asn1.Marshal(v) + if err != nil { + b.err = err + return + } + b.AddBytes(bytes) +} + +// AddASN1 appends an ASN.1 object. The object is prefixed with the given tag. +// Tags greater than 30 are not supported and result in an error (i.e. +// low-tag-number form only). The child builder passed to the +// BuilderContinuation can be used to build the content of the ASN.1 object. +func (b *Builder) AddASN1(tag asn1.Tag, f BuilderContinuation) { + if b.err != nil { + return + } + // Identifiers with the low five bits set indicate high-tag-number format + // (two or more octets), which we don't support. + if tag&0x1f == 0x1f { + b.err = fmt.Errorf("cryptobyte: high-tag number identifier octects not supported: 0x%x", tag) + return + } + b.AddUint8(uint8(tag)) + b.addLengthPrefixed(1, true, f) +} + +// String + +func (s *String) ReadASN1Boolean(out *bool) bool { + var bytes String + if !s.ReadASN1(&bytes, asn1.INTEGER) || len(bytes) != 1 { + return false + } + + switch bytes[0] { + case 0: + *out = false + case 0xff: + *out = true + default: + return false + } + + return true +} + +var bigIntType = reflect.TypeOf((*big.Int)(nil)).Elem() + +// ReadASN1Integer decodes an ASN.1 INTEGER into out and advances. If out does +// not point to an integer or to a big.Int, it panics. It returns true on +// success and false on error. +func (s *String) ReadASN1Integer(out interface{}) bool { + if reflect.TypeOf(out).Kind() != reflect.Ptr { + panic("out is not a pointer") + } + switch reflect.ValueOf(out).Elem().Kind() { + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + var i int64 + if !s.readASN1Int64(&i) || reflect.ValueOf(out).Elem().OverflowInt(i) { + return false + } + reflect.ValueOf(out).Elem().SetInt(i) + return true + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64: + var u uint64 + if !s.readASN1Uint64(&u) || reflect.ValueOf(out).Elem().OverflowUint(u) { + return false + } + reflect.ValueOf(out).Elem().SetUint(u) + return true + case reflect.Struct: + if reflect.TypeOf(out).Elem() == bigIntType { + return s.readASN1BigInt(out.(*big.Int)) + } + } + panic("out does not point to an integer type") +} + +func checkASN1Integer(bytes []byte) bool { + if len(bytes) == 0 { + // An INTEGER is encoded with at least one octet. + return false + } + if len(bytes) == 1 { + return true + } + if bytes[0] == 0 && bytes[1]&0x80 == 0 || bytes[0] == 0xff && bytes[1]&0x80 == 0x80 { + // Value is not minimally encoded. + return false + } + return true +} + +var bigOne = big.NewInt(1) + +func (s *String) readASN1BigInt(out *big.Int) bool { + var bytes String + if !s.ReadASN1(&bytes, asn1.INTEGER) || !checkASN1Integer(bytes) { + return false + } + if bytes[0]&0x80 == 0x80 { + // Negative number. + neg := make([]byte, len(bytes)) + for i, b := range bytes { + neg[i] = ^b + } + out.SetBytes(neg) + out.Add(out, bigOne) + out.Neg(out) + } else { + out.SetBytes(bytes) + } + return true +} + +func (s *String) readASN1Int64(out *int64) bool { + var bytes String + if !s.ReadASN1(&bytes, asn1.INTEGER) || !checkASN1Integer(bytes) || !asn1Signed(out, bytes) { + return false + } + return true +} + +func asn1Signed(out *int64, n []byte) bool { + length := len(n) + if length > 8 { + return false + } + for i := 0; i < length; i++ { + *out <<= 8 + *out |= int64(n[i]) + } + // Shift up and down in order to sign extend the result. + *out <<= 64 - uint8(length)*8 + *out >>= 64 - uint8(length)*8 + return true +} + +func (s *String) readASN1Uint64(out *uint64) bool { + var bytes String + if !s.ReadASN1(&bytes, asn1.INTEGER) || !checkASN1Integer(bytes) || !asn1Unsigned(out, bytes) { + return false + } + return true +} + +func asn1Unsigned(out *uint64, n []byte) bool { + length := len(n) + if length > 9 || length == 9 && n[0] != 0 { + // Too large for uint64. + return false + } + if n[0]&0x80 != 0 { + // Negative number. + return false + } + for i := 0; i < length; i++ { + *out <<= 8 + *out |= uint64(n[i]) + } + return true +} + +// ReadASN1Enum decodes an ASN.1 ENUMERATION into out and advances. It returns +// true on success and false on error. +func (s *String) ReadASN1Enum(out *int) bool { + var bytes String + var i int64 + if !s.ReadASN1(&bytes, asn1.ENUM) || !checkASN1Integer(bytes) || !asn1Signed(&i, bytes) { + return false + } + if int64(int(i)) != i { + return false + } + *out = int(i) + return true +} + +func (s *String) readBase128Int(out *int) bool { + ret := 0 + for i := 0; len(*s) > 0; i++ { + if i == 4 { + return false + } + ret <<= 7 + b := s.read(1)[0] + ret |= int(b & 0x7f) + if b&0x80 == 0 { + *out = ret + return true + } + } + return false // truncated +} + +// ReadASN1ObjectIdentifier decodes an ASN.1 OBJECT IDENTIFIER into out and +// advances. It returns true on success and false on error. +func (s *String) ReadASN1ObjectIdentifier(out *encoding_asn1.ObjectIdentifier) bool { + var bytes String + if !s.ReadASN1(&bytes, asn1.OBJECT_IDENTIFIER) || len(bytes) == 0 { + return false + } + + // In the worst case, we get two elements from the first byte (which is + // encoded differently) and then every varint is a single byte long. + components := make([]int, len(bytes)+1) + + // The first varint is 40*value1 + value2: + // According to this packing, value1 can take the values 0, 1 and 2 only. + // When value1 = 0 or value1 = 1, then value2 is <= 39. When value1 = 2, + // then there are no restrictions on value2. + var v int + if !bytes.readBase128Int(&v) { + return false + } + if v < 80 { + components[0] = v / 40 + components[1] = v % 40 + } else { + components[0] = 2 + components[1] = v - 80 + } + + i := 2 + for ; len(bytes) > 0; i++ { + if !bytes.readBase128Int(&v) { + return false + } + components[i] = v + } + *out = components[:i] + return true +} + +// ReadASN1GeneralizedTime decodes an ASN.1 GENERALIZEDTIME into out and +// advances. It returns true on success and false on error. +func (s *String) ReadASN1GeneralizedTime(out *time.Time) bool { + var bytes String + if !s.ReadASN1(&bytes, asn1.GeneralizedTime) { + return false + } + t := string(bytes) + res, err := time.Parse(generalizedTimeFormatStr, t) + if err != nil { + return false + } + if serialized := res.Format(generalizedTimeFormatStr); serialized != t { + return false + } + *out = res + return true +} + +// ReadASN1BitString decodes an ASN.1 BIT STRING into out and advances. It +// returns true on success and false on error. +func (s *String) ReadASN1BitString(out *encoding_asn1.BitString) bool { + var bytes String + if !s.ReadASN1(&bytes, asn1.BIT_STRING) || len(bytes) == 0 { + return false + } + + paddingBits := uint8(bytes[0]) + bytes = bytes[1:] + if paddingBits > 7 || + len(bytes) == 0 && paddingBits != 0 || + len(bytes) > 0 && bytes[len(bytes)-1]&(1< 4 || len(*s) < int(2+lenLen) { + return false + } + + lenBytes := String((*s)[2 : 2+lenLen]) + if !lenBytes.readUnsigned(&len32, int(lenLen)) { + return false + } + + // ITU-T X.690 section 10.1 (DER length forms) requires encoding the length + // with the minimum number of octets. + if len32 < 128 { + // Length should have used short-form encoding. + return false + } + if len32>>((lenLen-1)*8) == 0 { + // Leading octet is 0. Length should have been at least one byte shorter. + return false + } + + headerLen = 2 + uint32(lenLen) + if headerLen+len32 < len32 { + // Overflow. + return false + } + length = headerLen + len32 + } + + if uint32(int(length)) != length || !s.ReadBytes((*[]byte)(out), int(length)) { + return false + } + if skipHeader && !out.Skip(int(headerLen)) { + panic("cryptobyte: internal error") + } + + return true +} diff --git a/vendor/github.com/mreiferson/go-httpclient/BUILD b/vendor/golang.org/x/crypto/cryptobyte/asn1/BUILD similarity index 82% rename from vendor/github.com/mreiferson/go-httpclient/BUILD rename to vendor/golang.org/x/crypto/cryptobyte/asn1/BUILD index 93e1dee21b6..294ca33eff2 100644 --- a/vendor/github.com/mreiferson/go-httpclient/BUILD +++ b/vendor/golang.org/x/crypto/cryptobyte/asn1/BUILD @@ -2,8 +2,8 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library") go_library( name = "go_default_library", - srcs = ["httpclient.go"], - importpath = "github.com/mreiferson/go-httpclient", + srcs = ["asn1.go"], + importpath = "golang.org/x/crypto/cryptobyte/asn1", visibility = ["//visibility:public"], ) diff --git a/vendor/golang.org/x/crypto/cryptobyte/asn1/asn1.go b/vendor/golang.org/x/crypto/cryptobyte/asn1/asn1.go new file mode 100644 index 00000000000..90ef6a241de --- /dev/null +++ b/vendor/golang.org/x/crypto/cryptobyte/asn1/asn1.go @@ -0,0 +1,46 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package asn1 contains supporting types for parsing and building ASN.1 +// messages with the cryptobyte package. +package asn1 + +// Tag represents an ASN.1 identifier octet, consisting of a tag number +// (indicating a type) and class (such as context-specific or constructed). +// +// Methods in the cryptobyte package only support the low-tag-number form, i.e. +// a single identifier octet with bits 7-8 encoding the class and bits 1-6 +// encoding the tag number. +type Tag uint8 + +const ( + classConstructed = 0x20 + classContextSpecific = 0x80 +) + +// Constructed returns t with the constructed class bit set. +func (t Tag) Constructed() Tag { return t | classConstructed } + +// ContextSpecific returns t with the context-specific class bit set. +func (t Tag) ContextSpecific() Tag { return t | classContextSpecific } + +// The following is a list of standard tag and class combinations. +const ( + BOOLEAN = Tag(1) + INTEGER = Tag(2) + BIT_STRING = Tag(3) + OCTET_STRING = Tag(4) + NULL = Tag(5) + OBJECT_IDENTIFIER = Tag(6) + ENUM = Tag(10) + UTF8String = Tag(12) + SEQUENCE = Tag(16 | classConstructed) + SET = Tag(17 | classConstructed) + PrintableString = Tag(19) + T61String = Tag(20) + IA5String = Tag(22) + UTCTime = Tag(23) + GeneralizedTime = Tag(24) + GeneralString = Tag(27) +) diff --git a/vendor/golang.org/x/crypto/cryptobyte/builder.go b/vendor/golang.org/x/crypto/cryptobyte/builder.go new file mode 100644 index 00000000000..29b4c764127 --- /dev/null +++ b/vendor/golang.org/x/crypto/cryptobyte/builder.go @@ -0,0 +1,309 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package cryptobyte + +import ( + "errors" + "fmt" +) + +// A Builder builds byte strings from fixed-length and length-prefixed values. +// Builders either allocate space as needed, or are ‘fixed’, which means that +// they write into a given buffer and produce an error if it's exhausted. +// +// The zero value is a usable Builder that allocates space as needed. +// +// Simple values are marshaled and appended to a Builder using methods on the +// Builder. Length-prefixed values are marshaled by providing a +// BuilderContinuation, which is a function that writes the inner contents of +// the value to a given Builder. See the documentation for BuilderContinuation +// for details. +type Builder struct { + err error + result []byte + fixedSize bool + child *Builder + offset int + pendingLenLen int + pendingIsASN1 bool + inContinuation *bool +} + +// NewBuilder creates a Builder that appends its output to the given buffer. +// Like append(), the slice will be reallocated if its capacity is exceeded. +// Use Bytes to get the final buffer. +func NewBuilder(buffer []byte) *Builder { + return &Builder{ + result: buffer, + } +} + +// NewFixedBuilder creates a Builder that appends its output into the given +// buffer. This builder does not reallocate the output buffer. Writes that +// would exceed the buffer's capacity are treated as an error. +func NewFixedBuilder(buffer []byte) *Builder { + return &Builder{ + result: buffer, + fixedSize: true, + } +} + +// Bytes returns the bytes written by the builder or an error if one has +// occurred during during building. +func (b *Builder) Bytes() ([]byte, error) { + if b.err != nil { + return nil, b.err + } + return b.result[b.offset:], nil +} + +// BytesOrPanic returns the bytes written by the builder or panics if an error +// has occurred during building. +func (b *Builder) BytesOrPanic() []byte { + if b.err != nil { + panic(b.err) + } + return b.result[b.offset:] +} + +// AddUint8 appends an 8-bit value to the byte string. +func (b *Builder) AddUint8(v uint8) { + b.add(byte(v)) +} + +// AddUint16 appends a big-endian, 16-bit value to the byte string. +func (b *Builder) AddUint16(v uint16) { + b.add(byte(v>>8), byte(v)) +} + +// AddUint24 appends a big-endian, 24-bit value to the byte string. The highest +// byte of the 32-bit input value is silently truncated. +func (b *Builder) AddUint24(v uint32) { + b.add(byte(v>>16), byte(v>>8), byte(v)) +} + +// AddUint32 appends a big-endian, 32-bit value to the byte string. +func (b *Builder) AddUint32(v uint32) { + b.add(byte(v>>24), byte(v>>16), byte(v>>8), byte(v)) +} + +// AddBytes appends a sequence of bytes to the byte string. +func (b *Builder) AddBytes(v []byte) { + b.add(v...) +} + +// BuilderContinuation is continuation-passing interface for building +// length-prefixed byte sequences. Builder methods for length-prefixed +// sequences (AddUint8LengthPrefixed etc) will invoke the BuilderContinuation +// supplied to them. The child builder passed to the continuation can be used +// to build the content of the length-prefixed sequence. For example: +// +// parent := cryptobyte.NewBuilder() +// parent.AddUint8LengthPrefixed(func (child *Builder) { +// child.AddUint8(42) +// child.AddUint8LengthPrefixed(func (grandchild *Builder) { +// grandchild.AddUint8(5) +// }) +// }) +// +// It is an error to write more bytes to the child than allowed by the reserved +// length prefix. After the continuation returns, the child must be considered +// invalid, i.e. users must not store any copies or references of the child +// that outlive the continuation. +// +// If the continuation panics with a value of type BuildError then the inner +// error will be returned as the error from Bytes. If the child panics +// otherwise then Bytes will repanic with the same value. +type BuilderContinuation func(child *Builder) + +// BuildError wraps an error. If a BuilderContinuation panics with this value, +// the panic will be recovered and the inner error will be returned from +// Builder.Bytes. +type BuildError struct { + Err error +} + +// AddUint8LengthPrefixed adds a 8-bit length-prefixed byte sequence. +func (b *Builder) AddUint8LengthPrefixed(f BuilderContinuation) { + b.addLengthPrefixed(1, false, f) +} + +// AddUint16LengthPrefixed adds a big-endian, 16-bit length-prefixed byte sequence. +func (b *Builder) AddUint16LengthPrefixed(f BuilderContinuation) { + b.addLengthPrefixed(2, false, f) +} + +// AddUint24LengthPrefixed adds a big-endian, 24-bit length-prefixed byte sequence. +func (b *Builder) AddUint24LengthPrefixed(f BuilderContinuation) { + b.addLengthPrefixed(3, false, f) +} + +// AddUint32LengthPrefixed adds a big-endian, 32-bit length-prefixed byte sequence. +func (b *Builder) AddUint32LengthPrefixed(f BuilderContinuation) { + b.addLengthPrefixed(4, false, f) +} + +func (b *Builder) callContinuation(f BuilderContinuation, arg *Builder) { + if !*b.inContinuation { + *b.inContinuation = true + + defer func() { + *b.inContinuation = false + + r := recover() + if r == nil { + return + } + + if buildError, ok := r.(BuildError); ok { + b.err = buildError.Err + } else { + panic(r) + } + }() + } + + f(arg) +} + +func (b *Builder) addLengthPrefixed(lenLen int, isASN1 bool, f BuilderContinuation) { + // Subsequent writes can be ignored if the builder has encountered an error. + if b.err != nil { + return + } + + offset := len(b.result) + b.add(make([]byte, lenLen)...) + + if b.inContinuation == nil { + b.inContinuation = new(bool) + } + + b.child = &Builder{ + result: b.result, + fixedSize: b.fixedSize, + offset: offset, + pendingLenLen: lenLen, + pendingIsASN1: isASN1, + inContinuation: b.inContinuation, + } + + b.callContinuation(f, b.child) + b.flushChild() + if b.child != nil { + panic("cryptobyte: internal error") + } +} + +func (b *Builder) flushChild() { + if b.child == nil { + return + } + b.child.flushChild() + child := b.child + b.child = nil + + if child.err != nil { + b.err = child.err + return + } + + length := len(child.result) - child.pendingLenLen - child.offset + + if length < 0 { + panic("cryptobyte: internal error") // result unexpectedly shrunk + } + + if child.pendingIsASN1 { + // For ASN.1, we reserved a single byte for the length. If that turned out + // to be incorrect, we have to move the contents along in order to make + // space. + if child.pendingLenLen != 1 { + panic("cryptobyte: internal error") + } + var lenLen, lenByte uint8 + if int64(length) > 0xfffffffe { + b.err = errors.New("pending ASN.1 child too long") + return + } else if length > 0xffffff { + lenLen = 5 + lenByte = 0x80 | 4 + } else if length > 0xffff { + lenLen = 4 + lenByte = 0x80 | 3 + } else if length > 0xff { + lenLen = 3 + lenByte = 0x80 | 2 + } else if length > 0x7f { + lenLen = 2 + lenByte = 0x80 | 1 + } else { + lenLen = 1 + lenByte = uint8(length) + length = 0 + } + + // Insert the initial length byte, make space for successive length bytes, + // and adjust the offset. + child.result[child.offset] = lenByte + extraBytes := int(lenLen - 1) + if extraBytes != 0 { + child.add(make([]byte, extraBytes)...) + childStart := child.offset + child.pendingLenLen + copy(child.result[childStart+extraBytes:], child.result[childStart:]) + } + child.offset++ + child.pendingLenLen = extraBytes + } + + l := length + for i := child.pendingLenLen - 1; i >= 0; i-- { + child.result[child.offset+i] = uint8(l) + l >>= 8 + } + if l != 0 { + b.err = fmt.Errorf("cryptobyte: pending child length %d exceeds %d-byte length prefix", length, child.pendingLenLen) + return + } + + if !b.fixedSize { + b.result = child.result // In case child reallocated result. + } +} + +func (b *Builder) add(bytes ...byte) { + if b.err != nil { + return + } + if b.child != nil { + panic("attempted write while child is pending") + } + if len(b.result)+len(bytes) < len(bytes) { + b.err = errors.New("cryptobyte: length overflow") + } + if b.fixedSize && len(b.result)+len(bytes) > cap(b.result) { + b.err = errors.New("cryptobyte: Builder is exceeding its fixed-size buffer") + return + } + b.result = append(b.result, bytes...) +} + +// A MarshalingValue marshals itself into a Builder. +type MarshalingValue interface { + // Marshal is called by Builder.AddValue. It receives a pointer to a builder + // to marshal itself into. It may return an error that occurred during + // marshaling, such as unset or invalid values. + Marshal(b *Builder) error +} + +// AddValue calls Marshal on v, passing a pointer to the builder to append to. +// If Marshal returns an error, it is set on the Builder so that subsequent +// appends don't have an effect. +func (b *Builder) AddValue(v MarshalingValue) { + err := v.Marshal(b) + if err != nil { + b.err = err + } +} diff --git a/vendor/golang.org/x/crypto/cryptobyte/string.go b/vendor/golang.org/x/crypto/cryptobyte/string.go new file mode 100644 index 00000000000..db3d738d39c --- /dev/null +++ b/vendor/golang.org/x/crypto/cryptobyte/string.go @@ -0,0 +1,167 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package cryptobyte contains types that help with parsing and constructing +// length-prefixed, binary messages, including ASN.1 DER. (The asn1 subpackage +// contains useful ASN.1 constants.) +// +// The String type is for parsing. It wraps a []byte slice and provides helper +// functions for consuming structures, value by value. +// +// The Builder type is for constructing messages. It providers helper functions +// for appending values and also for appending length-prefixed submessages – +// without having to worry about calculating the length prefix ahead of time. +// +// See the documentation and examples for the Builder and String types to get +// started. +package cryptobyte + +// String represents a string of bytes. It provides methods for parsing +// fixed-length and length-prefixed values from it. +type String []byte + +// read advances a String by n bytes and returns them. If less than n bytes +// remain, it returns nil. +func (s *String) read(n int) []byte { + if len(*s) < n { + return nil + } + v := (*s)[:n] + *s = (*s)[n:] + return v +} + +// Skip advances the String by n byte and reports whether it was successful. +func (s *String) Skip(n int) bool { + return s.read(n) != nil +} + +// ReadUint8 decodes an 8-bit value into out and advances over it. It +// returns true on success and false on error. +func (s *String) ReadUint8(out *uint8) bool { + v := s.read(1) + if v == nil { + return false + } + *out = uint8(v[0]) + return true +} + +// ReadUint16 decodes a big-endian, 16-bit value into out and advances over it. +// It returns true on success and false on error. +func (s *String) ReadUint16(out *uint16) bool { + v := s.read(2) + if v == nil { + return false + } + *out = uint16(v[0])<<8 | uint16(v[1]) + return true +} + +// ReadUint24 decodes a big-endian, 24-bit value into out and advances over it. +// It returns true on success and false on error. +func (s *String) ReadUint24(out *uint32) bool { + v := s.read(3) + if v == nil { + return false + } + *out = uint32(v[0])<<16 | uint32(v[1])<<8 | uint32(v[2]) + return true +} + +// ReadUint32 decodes a big-endian, 32-bit value into out and advances over it. +// It returns true on success and false on error. +func (s *String) ReadUint32(out *uint32) bool { + v := s.read(4) + if v == nil { + return false + } + *out = uint32(v[0])<<24 | uint32(v[1])<<16 | uint32(v[2])<<8 | uint32(v[3]) + return true +} + +func (s *String) readUnsigned(out *uint32, length int) bool { + v := s.read(length) + if v == nil { + return false + } + var result uint32 + for i := 0; i < length; i++ { + result <<= 8 + result |= uint32(v[i]) + } + *out = result + return true +} + +func (s *String) readLengthPrefixed(lenLen int, outChild *String) bool { + lenBytes := s.read(lenLen) + if lenBytes == nil { + return false + } + var length uint32 + for _, b := range lenBytes { + length = length << 8 + length = length | uint32(b) + } + if int(length) < 0 { + // This currently cannot overflow because we read uint24 at most, but check + // anyway in case that changes in the future. + return false + } + v := s.read(int(length)) + if v == nil { + return false + } + *outChild = v + return true +} + +// ReadUint8LengthPrefixed reads the content of an 8-bit length-prefixed value +// into out and advances over it. It returns true on success and false on +// error. +func (s *String) ReadUint8LengthPrefixed(out *String) bool { + return s.readLengthPrefixed(1, out) +} + +// ReadUint16LengthPrefixed reads the content of a big-endian, 16-bit +// length-prefixed value into out and advances over it. It returns true on +// success and false on error. +func (s *String) ReadUint16LengthPrefixed(out *String) bool { + return s.readLengthPrefixed(2, out) +} + +// ReadUint24LengthPrefixed reads the content of a big-endian, 24-bit +// length-prefixed value into out and advances over it. It returns true on +// success and false on error. +func (s *String) ReadUint24LengthPrefixed(out *String) bool { + return s.readLengthPrefixed(3, out) +} + +// ReadBytes reads n bytes into out and advances over them. It returns true on +// success and false and error. +func (s *String) ReadBytes(out *[]byte, n int) bool { + v := s.read(n) + if v == nil { + return false + } + *out = v + return true +} + +// CopyBytes copies len(out) bytes into out and advances over them. It returns +// true on success and false on error. +func (s *String) CopyBytes(out []byte) bool { + n := len(out) + v := s.read(n) + if v == nil { + return false + } + return copy(out, v) == n +} + +// Empty reports whether the string does not contain any bytes. +func (s String) Empty() bool { + return len(s) == 0 +} diff --git a/vendor/golang.org/x/crypto/curve25519/curve25519.go b/vendor/golang.org/x/crypto/curve25519/curve25519.go index 2d14c2a78ac..cb8fbc57b97 100644 --- a/vendor/golang.org/x/crypto/curve25519/curve25519.go +++ b/vendor/golang.org/x/crypto/curve25519/curve25519.go @@ -2,7 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -// We have a implementation in amd64 assembly so this code is only run on +// We have an implementation in amd64 assembly so this code is only run on // non-amd64 platforms. The amd64 assembly does not support gccgo. // +build !amd64 gccgo appengine diff --git a/vendor/golang.org/x/crypto/ed25519/ed25519.go b/vendor/golang.org/x/crypto/ed25519/ed25519.go index 16cd38546f3..4f26b49b6a8 100644 --- a/vendor/golang.org/x/crypto/ed25519/ed25519.go +++ b/vendor/golang.org/x/crypto/ed25519/ed25519.go @@ -6,7 +6,7 @@ // https://ed25519.cr.yp.to/. // // These functions are also compatible with the “Ed25519” function defined in -// https://tools.ietf.org/html/draft-irtf-cfrg-eddsa-05. +// RFC 8032. package ed25519 // This code is a port of the public domain, “ref10” implementation of ed25519 diff --git a/vendor/golang.org/x/crypto/internal/chacha20/BUILD b/vendor/golang.org/x/crypto/internal/chacha20/BUILD new file mode 100644 index 00000000000..fa38cb7bd04 --- /dev/null +++ b/vendor/golang.org/x/crypto/internal/chacha20/BUILD @@ -0,0 +1,22 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +go_library( + name = "go_default_library", + srcs = ["chacha_generic.go"], + importpath = "golang.org/x/crypto/internal/chacha20", + visibility = ["//vendor/golang.org/x/crypto:__subpackages__"], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [":package-srcs"], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/vendor/golang.org/x/crypto/internal/chacha20/chacha_generic.go b/vendor/golang.org/x/crypto/internal/chacha20/chacha_generic.go new file mode 100644 index 00000000000..0f8efdbaa44 --- /dev/null +++ b/vendor/golang.org/x/crypto/internal/chacha20/chacha_generic.go @@ -0,0 +1,198 @@ +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package ChaCha20 implements the core ChaCha20 function as specified in https://tools.ietf.org/html/rfc7539#section-2.3. +package chacha20 + +import "encoding/binary" + +const rounds = 20 + +// core applies the ChaCha20 core function to 16-byte input in, 32-byte key k, +// and 16-byte constant c, and puts the result into 64-byte array out. +func core(out *[64]byte, in *[16]byte, k *[32]byte) { + j0 := uint32(0x61707865) + j1 := uint32(0x3320646e) + j2 := uint32(0x79622d32) + j3 := uint32(0x6b206574) + j4 := binary.LittleEndian.Uint32(k[0:4]) + j5 := binary.LittleEndian.Uint32(k[4:8]) + j6 := binary.LittleEndian.Uint32(k[8:12]) + j7 := binary.LittleEndian.Uint32(k[12:16]) + j8 := binary.LittleEndian.Uint32(k[16:20]) + j9 := binary.LittleEndian.Uint32(k[20:24]) + j10 := binary.LittleEndian.Uint32(k[24:28]) + j11 := binary.LittleEndian.Uint32(k[28:32]) + j12 := binary.LittleEndian.Uint32(in[0:4]) + j13 := binary.LittleEndian.Uint32(in[4:8]) + j14 := binary.LittleEndian.Uint32(in[8:12]) + j15 := binary.LittleEndian.Uint32(in[12:16]) + + x0, x1, x2, x3, x4, x5, x6, x7 := j0, j1, j2, j3, j4, j5, j6, j7 + x8, x9, x10, x11, x12, x13, x14, x15 := j8, j9, j10, j11, j12, j13, j14, j15 + + for i := 0; i < rounds; i += 2 { + x0 += x4 + x12 ^= x0 + x12 = (x12 << 16) | (x12 >> (16)) + x8 += x12 + x4 ^= x8 + x4 = (x4 << 12) | (x4 >> (20)) + x0 += x4 + x12 ^= x0 + x12 = (x12 << 8) | (x12 >> (24)) + x8 += x12 + x4 ^= x8 + x4 = (x4 << 7) | (x4 >> (25)) + x1 += x5 + x13 ^= x1 + x13 = (x13 << 16) | (x13 >> 16) + x9 += x13 + x5 ^= x9 + x5 = (x5 << 12) | (x5 >> 20) + x1 += x5 + x13 ^= x1 + x13 = (x13 << 8) | (x13 >> 24) + x9 += x13 + x5 ^= x9 + x5 = (x5 << 7) | (x5 >> 25) + x2 += x6 + x14 ^= x2 + x14 = (x14 << 16) | (x14 >> 16) + x10 += x14 + x6 ^= x10 + x6 = (x6 << 12) | (x6 >> 20) + x2 += x6 + x14 ^= x2 + x14 = (x14 << 8) | (x14 >> 24) + x10 += x14 + x6 ^= x10 + x6 = (x6 << 7) | (x6 >> 25) + x3 += x7 + x15 ^= x3 + x15 = (x15 << 16) | (x15 >> 16) + x11 += x15 + x7 ^= x11 + x7 = (x7 << 12) | (x7 >> 20) + x3 += x7 + x15 ^= x3 + x15 = (x15 << 8) | (x15 >> 24) + x11 += x15 + x7 ^= x11 + x7 = (x7 << 7) | (x7 >> 25) + x0 += x5 + x15 ^= x0 + x15 = (x15 << 16) | (x15 >> 16) + x10 += x15 + x5 ^= x10 + x5 = (x5 << 12) | (x5 >> 20) + x0 += x5 + x15 ^= x0 + x15 = (x15 << 8) | (x15 >> 24) + x10 += x15 + x5 ^= x10 + x5 = (x5 << 7) | (x5 >> 25) + x1 += x6 + x12 ^= x1 + x12 = (x12 << 16) | (x12 >> 16) + x11 += x12 + x6 ^= x11 + x6 = (x6 << 12) | (x6 >> 20) + x1 += x6 + x12 ^= x1 + x12 = (x12 << 8) | (x12 >> 24) + x11 += x12 + x6 ^= x11 + x6 = (x6 << 7) | (x6 >> 25) + x2 += x7 + x13 ^= x2 + x13 = (x13 << 16) | (x13 >> 16) + x8 += x13 + x7 ^= x8 + x7 = (x7 << 12) | (x7 >> 20) + x2 += x7 + x13 ^= x2 + x13 = (x13 << 8) | (x13 >> 24) + x8 += x13 + x7 ^= x8 + x7 = (x7 << 7) | (x7 >> 25) + x3 += x4 + x14 ^= x3 + x14 = (x14 << 16) | (x14 >> 16) + x9 += x14 + x4 ^= x9 + x4 = (x4 << 12) | (x4 >> 20) + x3 += x4 + x14 ^= x3 + x14 = (x14 << 8) | (x14 >> 24) + x9 += x14 + x4 ^= x9 + x4 = (x4 << 7) | (x4 >> 25) + } + + x0 += j0 + x1 += j1 + x2 += j2 + x3 += j3 + x4 += j4 + x5 += j5 + x6 += j6 + x7 += j7 + x8 += j8 + x9 += j9 + x10 += j10 + x11 += j11 + x12 += j12 + x13 += j13 + x14 += j14 + x15 += j15 + + binary.LittleEndian.PutUint32(out[0:4], x0) + binary.LittleEndian.PutUint32(out[4:8], x1) + binary.LittleEndian.PutUint32(out[8:12], x2) + binary.LittleEndian.PutUint32(out[12:16], x3) + binary.LittleEndian.PutUint32(out[16:20], x4) + binary.LittleEndian.PutUint32(out[20:24], x5) + binary.LittleEndian.PutUint32(out[24:28], x6) + binary.LittleEndian.PutUint32(out[28:32], x7) + binary.LittleEndian.PutUint32(out[32:36], x8) + binary.LittleEndian.PutUint32(out[36:40], x9) + binary.LittleEndian.PutUint32(out[40:44], x10) + binary.LittleEndian.PutUint32(out[44:48], x11) + binary.LittleEndian.PutUint32(out[48:52], x12) + binary.LittleEndian.PutUint32(out[52:56], x13) + binary.LittleEndian.PutUint32(out[56:60], x14) + binary.LittleEndian.PutUint32(out[60:64], x15) +} + +// XORKeyStream crypts bytes from in to out using the given key and counters. +// In and out must overlap entirely or not at all. Counter contains the raw +// ChaCha20 counter bytes (i.e. block counter followed by nonce). +func XORKeyStream(out, in []byte, counter *[16]byte, key *[32]byte) { + var block [64]byte + var counterCopy [16]byte + copy(counterCopy[:], counter[:]) + + for len(in) >= 64 { + core(&block, &counterCopy, key) + for i, x := range block { + out[i] = in[i] ^ x + } + u := uint32(1) + for i := 0; i < 4; i++ { + u += uint32(counterCopy[i]) + counterCopy[i] = byte(u) + u >>= 8 + } + in = in[64:] + out = out[64:] + } + + if len(in) > 0 { + core(&block, &counterCopy, key) + for i, v := range in { + out[i] = v ^ block[i] + } + } +} diff --git a/vendor/golang.org/x/crypto/nacl/secretbox/secretbox.go b/vendor/golang.org/x/crypto/nacl/secretbox/secretbox.go index 646886477d7..db3cc5b0f80 100644 --- a/vendor/golang.org/x/crypto/nacl/secretbox/secretbox.go +++ b/vendor/golang.org/x/crypto/nacl/secretbox/secretbox.go @@ -13,6 +13,23 @@ example, by using nonce 1 for the first message, nonce 2 for the second message, etc. Nonces are long enough that randomly generated nonces have negligible risk of collision. +Messages should be small because: + +1. The whole message needs to be held in memory to be processed. + +2. Using large messages pressures implementations on small machines to decrypt +and process plaintext before authenticating it. This is very dangerous, and +this API does not allow it, but a protocol that uses excessive message sizes +might present some implementations with no other choice. + +3. Fixed overheads will be sufficiently amortised by messages as small as 8KB. + +4. Performance may be improved by working with messages that fit into data caches. + +Thus large amounts of data should be chunked so that each message is small. +(Each message still needs a unique nonce.) If in doubt, 16KB is a reasonable +chunk size. + This package is interoperable with NaCl: https://nacl.cr.yp.to/secretbox.html. */ package secretbox diff --git a/vendor/golang.org/x/crypto/ocsp/BUILD b/vendor/golang.org/x/crypto/ocsp/BUILD new file mode 100644 index 00000000000..d4cb712f0b9 --- /dev/null +++ b/vendor/golang.org/x/crypto/ocsp/BUILD @@ -0,0 +1,22 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +go_library( + name = "go_default_library", + srcs = ["ocsp.go"], + importpath = "golang.org/x/crypto/ocsp", + visibility = ["//visibility:public"], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [":package-srcs"], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/vendor/golang.org/x/crypto/ocsp/ocsp.go b/vendor/golang.org/x/crypto/ocsp/ocsp.go new file mode 100644 index 00000000000..b030d0e5a90 --- /dev/null +++ b/vendor/golang.org/x/crypto/ocsp/ocsp.go @@ -0,0 +1,778 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package ocsp parses OCSP responses as specified in RFC 2560. OCSP responses +// are signed messages attesting to the validity of a certificate for a small +// period of time. This is used to manage revocation for X.509 certificates. +package ocsp + +import ( + "crypto" + "crypto/ecdsa" + "crypto/elliptic" + "crypto/rand" + "crypto/rsa" + _ "crypto/sha1" + _ "crypto/sha256" + _ "crypto/sha512" + "crypto/x509" + "crypto/x509/pkix" + "encoding/asn1" + "errors" + "fmt" + "math/big" + "strconv" + "time" +) + +var idPKIXOCSPBasic = asn1.ObjectIdentifier([]int{1, 3, 6, 1, 5, 5, 7, 48, 1, 1}) + +// ResponseStatus contains the result of an OCSP request. See +// https://tools.ietf.org/html/rfc6960#section-2.3 +type ResponseStatus int + +const ( + Success ResponseStatus = 0 + Malformed ResponseStatus = 1 + InternalError ResponseStatus = 2 + TryLater ResponseStatus = 3 + // Status code four is unused in OCSP. See + // https://tools.ietf.org/html/rfc6960#section-4.2.1 + SignatureRequired ResponseStatus = 5 + Unauthorized ResponseStatus = 6 +) + +func (r ResponseStatus) String() string { + switch r { + case Success: + return "success" + case Malformed: + return "malformed" + case InternalError: + return "internal error" + case TryLater: + return "try later" + case SignatureRequired: + return "signature required" + case Unauthorized: + return "unauthorized" + default: + return "unknown OCSP status: " + strconv.Itoa(int(r)) + } +} + +// ResponseError is an error that may be returned by ParseResponse to indicate +// that the response itself is an error, not just that its indicating that a +// certificate is revoked, unknown, etc. +type ResponseError struct { + Status ResponseStatus +} + +func (r ResponseError) Error() string { + return "ocsp: error from server: " + r.Status.String() +} + +// These are internal structures that reflect the ASN.1 structure of an OCSP +// response. See RFC 2560, section 4.2. + +type certID struct { + HashAlgorithm pkix.AlgorithmIdentifier + NameHash []byte + IssuerKeyHash []byte + SerialNumber *big.Int +} + +// https://tools.ietf.org/html/rfc2560#section-4.1.1 +type ocspRequest struct { + TBSRequest tbsRequest +} + +type tbsRequest struct { + Version int `asn1:"explicit,tag:0,default:0,optional"` + RequestorName pkix.RDNSequence `asn1:"explicit,tag:1,optional"` + RequestList []request +} + +type request struct { + Cert certID +} + +type responseASN1 struct { + Status asn1.Enumerated + Response responseBytes `asn1:"explicit,tag:0,optional"` +} + +type responseBytes struct { + ResponseType asn1.ObjectIdentifier + Response []byte +} + +type basicResponse struct { + TBSResponseData responseData + SignatureAlgorithm pkix.AlgorithmIdentifier + Signature asn1.BitString + Certificates []asn1.RawValue `asn1:"explicit,tag:0,optional"` +} + +type responseData struct { + Raw asn1.RawContent + Version int `asn1:"optional,default:0,explicit,tag:0"` + RawResponderID asn1.RawValue + ProducedAt time.Time `asn1:"generalized"` + Responses []singleResponse +} + +type singleResponse struct { + CertID certID + Good asn1.Flag `asn1:"tag:0,optional"` + Revoked revokedInfo `asn1:"tag:1,optional"` + Unknown asn1.Flag `asn1:"tag:2,optional"` + ThisUpdate time.Time `asn1:"generalized"` + NextUpdate time.Time `asn1:"generalized,explicit,tag:0,optional"` + SingleExtensions []pkix.Extension `asn1:"explicit,tag:1,optional"` +} + +type revokedInfo struct { + RevocationTime time.Time `asn1:"generalized"` + Reason asn1.Enumerated `asn1:"explicit,tag:0,optional"` +} + +var ( + oidSignatureMD2WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 2} + oidSignatureMD5WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 4} + oidSignatureSHA1WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 5} + oidSignatureSHA256WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 11} + oidSignatureSHA384WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 12} + oidSignatureSHA512WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 13} + oidSignatureDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 3} + oidSignatureDSAWithSHA256 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 3, 2} + oidSignatureECDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 1} + oidSignatureECDSAWithSHA256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 2} + oidSignatureECDSAWithSHA384 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 3} + oidSignatureECDSAWithSHA512 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 4} +) + +var hashOIDs = map[crypto.Hash]asn1.ObjectIdentifier{ + crypto.SHA1: asn1.ObjectIdentifier([]int{1, 3, 14, 3, 2, 26}), + crypto.SHA256: asn1.ObjectIdentifier([]int{2, 16, 840, 1, 101, 3, 4, 2, 1}), + crypto.SHA384: asn1.ObjectIdentifier([]int{2, 16, 840, 1, 101, 3, 4, 2, 2}), + crypto.SHA512: asn1.ObjectIdentifier([]int{2, 16, 840, 1, 101, 3, 4, 2, 3}), +} + +// TODO(rlb): This is also from crypto/x509, so same comment as AGL's below +var signatureAlgorithmDetails = []struct { + algo x509.SignatureAlgorithm + oid asn1.ObjectIdentifier + pubKeyAlgo x509.PublicKeyAlgorithm + hash crypto.Hash +}{ + {x509.MD2WithRSA, oidSignatureMD2WithRSA, x509.RSA, crypto.Hash(0) /* no value for MD2 */}, + {x509.MD5WithRSA, oidSignatureMD5WithRSA, x509.RSA, crypto.MD5}, + {x509.SHA1WithRSA, oidSignatureSHA1WithRSA, x509.RSA, crypto.SHA1}, + {x509.SHA256WithRSA, oidSignatureSHA256WithRSA, x509.RSA, crypto.SHA256}, + {x509.SHA384WithRSA, oidSignatureSHA384WithRSA, x509.RSA, crypto.SHA384}, + {x509.SHA512WithRSA, oidSignatureSHA512WithRSA, x509.RSA, crypto.SHA512}, + {x509.DSAWithSHA1, oidSignatureDSAWithSHA1, x509.DSA, crypto.SHA1}, + {x509.DSAWithSHA256, oidSignatureDSAWithSHA256, x509.DSA, crypto.SHA256}, + {x509.ECDSAWithSHA1, oidSignatureECDSAWithSHA1, x509.ECDSA, crypto.SHA1}, + {x509.ECDSAWithSHA256, oidSignatureECDSAWithSHA256, x509.ECDSA, crypto.SHA256}, + {x509.ECDSAWithSHA384, oidSignatureECDSAWithSHA384, x509.ECDSA, crypto.SHA384}, + {x509.ECDSAWithSHA512, oidSignatureECDSAWithSHA512, x509.ECDSA, crypto.SHA512}, +} + +// TODO(rlb): This is also from crypto/x509, so same comment as AGL's below +func signingParamsForPublicKey(pub interface{}, requestedSigAlgo x509.SignatureAlgorithm) (hashFunc crypto.Hash, sigAlgo pkix.AlgorithmIdentifier, err error) { + var pubType x509.PublicKeyAlgorithm + + switch pub := pub.(type) { + case *rsa.PublicKey: + pubType = x509.RSA + hashFunc = crypto.SHA256 + sigAlgo.Algorithm = oidSignatureSHA256WithRSA + sigAlgo.Parameters = asn1.RawValue{ + Tag: 5, + } + + case *ecdsa.PublicKey: + pubType = x509.ECDSA + + switch pub.Curve { + case elliptic.P224(), elliptic.P256(): + hashFunc = crypto.SHA256 + sigAlgo.Algorithm = oidSignatureECDSAWithSHA256 + case elliptic.P384(): + hashFunc = crypto.SHA384 + sigAlgo.Algorithm = oidSignatureECDSAWithSHA384 + case elliptic.P521(): + hashFunc = crypto.SHA512 + sigAlgo.Algorithm = oidSignatureECDSAWithSHA512 + default: + err = errors.New("x509: unknown elliptic curve") + } + + default: + err = errors.New("x509: only RSA and ECDSA keys supported") + } + + if err != nil { + return + } + + if requestedSigAlgo == 0 { + return + } + + found := false + for _, details := range signatureAlgorithmDetails { + if details.algo == requestedSigAlgo { + if details.pubKeyAlgo != pubType { + err = errors.New("x509: requested SignatureAlgorithm does not match private key type") + return + } + sigAlgo.Algorithm, hashFunc = details.oid, details.hash + if hashFunc == 0 { + err = errors.New("x509: cannot sign with hash function requested") + return + } + found = true + break + } + } + + if !found { + err = errors.New("x509: unknown SignatureAlgorithm") + } + + return +} + +// TODO(agl): this is taken from crypto/x509 and so should probably be exported +// from crypto/x509 or crypto/x509/pkix. +func getSignatureAlgorithmFromOID(oid asn1.ObjectIdentifier) x509.SignatureAlgorithm { + for _, details := range signatureAlgorithmDetails { + if oid.Equal(details.oid) { + return details.algo + } + } + return x509.UnknownSignatureAlgorithm +} + +// TODO(rlb): This is not taken from crypto/x509, but it's of the same general form. +func getHashAlgorithmFromOID(target asn1.ObjectIdentifier) crypto.Hash { + for hash, oid := range hashOIDs { + if oid.Equal(target) { + return hash + } + } + return crypto.Hash(0) +} + +func getOIDFromHashAlgorithm(target crypto.Hash) asn1.ObjectIdentifier { + for hash, oid := range hashOIDs { + if hash == target { + return oid + } + } + return nil +} + +// This is the exposed reflection of the internal OCSP structures. + +// The status values that can be expressed in OCSP. See RFC 6960. +const ( + // Good means that the certificate is valid. + Good = iota + // Revoked means that the certificate has been deliberately revoked. + Revoked + // Unknown means that the OCSP responder doesn't know about the certificate. + Unknown + // ServerFailed is unused and was never used (see + // https://go-review.googlesource.com/#/c/18944). ParseResponse will + // return a ResponseError when an error response is parsed. + ServerFailed +) + +// The enumerated reasons for revoking a certificate. See RFC 5280. +const ( + Unspecified = 0 + KeyCompromise = 1 + CACompromise = 2 + AffiliationChanged = 3 + Superseded = 4 + CessationOfOperation = 5 + CertificateHold = 6 + + RemoveFromCRL = 8 + PrivilegeWithdrawn = 9 + AACompromise = 10 +) + +// Request represents an OCSP request. See RFC 6960. +type Request struct { + HashAlgorithm crypto.Hash + IssuerNameHash []byte + IssuerKeyHash []byte + SerialNumber *big.Int +} + +// Marshal marshals the OCSP request to ASN.1 DER encoded form. +func (req *Request) Marshal() ([]byte, error) { + hashAlg := getOIDFromHashAlgorithm(req.HashAlgorithm) + if hashAlg == nil { + return nil, errors.New("Unknown hash algorithm") + } + return asn1.Marshal(ocspRequest{ + tbsRequest{ + Version: 0, + RequestList: []request{ + { + Cert: certID{ + pkix.AlgorithmIdentifier{ + Algorithm: hashAlg, + Parameters: asn1.RawValue{Tag: 5 /* ASN.1 NULL */}, + }, + req.IssuerNameHash, + req.IssuerKeyHash, + req.SerialNumber, + }, + }, + }, + }, + }) +} + +// Response represents an OCSP response containing a single SingleResponse. See +// RFC 6960. +type Response struct { + // Status is one of {Good, Revoked, Unknown} + Status int + SerialNumber *big.Int + ProducedAt, ThisUpdate, NextUpdate, RevokedAt time.Time + RevocationReason int + Certificate *x509.Certificate + // TBSResponseData contains the raw bytes of the signed response. If + // Certificate is nil then this can be used to verify Signature. + TBSResponseData []byte + Signature []byte + SignatureAlgorithm x509.SignatureAlgorithm + + // IssuerHash is the hash used to compute the IssuerNameHash and IssuerKeyHash. + // Valid values are crypto.SHA1, crypto.SHA256, crypto.SHA384, and crypto.SHA512. + // If zero, the default is crypto.SHA1. + IssuerHash crypto.Hash + + // RawResponderName optionally contains the DER-encoded subject of the + // responder certificate. Exactly one of RawResponderName and + // ResponderKeyHash is set. + RawResponderName []byte + // ResponderKeyHash optionally contains the SHA-1 hash of the + // responder's public key. Exactly one of RawResponderName and + // ResponderKeyHash is set. + ResponderKeyHash []byte + + // Extensions contains raw X.509 extensions from the singleExtensions field + // of the OCSP response. When parsing certificates, this can be used to + // extract non-critical extensions that are not parsed by this package. When + // marshaling OCSP responses, the Extensions field is ignored, see + // ExtraExtensions. + Extensions []pkix.Extension + + // ExtraExtensions contains extensions to be copied, raw, into any marshaled + // OCSP response (in the singleExtensions field). Values override any + // extensions that would otherwise be produced based on the other fields. The + // ExtraExtensions field is not populated when parsing certificates, see + // Extensions. + ExtraExtensions []pkix.Extension +} + +// These are pre-serialized error responses for the various non-success codes +// defined by OCSP. The Unauthorized code in particular can be used by an OCSP +// responder that supports only pre-signed responses as a response to requests +// for certificates with unknown status. See RFC 5019. +var ( + MalformedRequestErrorResponse = []byte{0x30, 0x03, 0x0A, 0x01, 0x01} + InternalErrorErrorResponse = []byte{0x30, 0x03, 0x0A, 0x01, 0x02} + TryLaterErrorResponse = []byte{0x30, 0x03, 0x0A, 0x01, 0x03} + SigRequredErrorResponse = []byte{0x30, 0x03, 0x0A, 0x01, 0x05} + UnauthorizedErrorResponse = []byte{0x30, 0x03, 0x0A, 0x01, 0x06} +) + +// CheckSignatureFrom checks that the signature in resp is a valid signature +// from issuer. This should only be used if resp.Certificate is nil. Otherwise, +// the OCSP response contained an intermediate certificate that created the +// signature. That signature is checked by ParseResponse and only +// resp.Certificate remains to be validated. +func (resp *Response) CheckSignatureFrom(issuer *x509.Certificate) error { + return issuer.CheckSignature(resp.SignatureAlgorithm, resp.TBSResponseData, resp.Signature) +} + +// ParseError results from an invalid OCSP response. +type ParseError string + +func (p ParseError) Error() string { + return string(p) +} + +// ParseRequest parses an OCSP request in DER form. It only supports +// requests for a single certificate. Signed requests are not supported. +// If a request includes a signature, it will result in a ParseError. +func ParseRequest(bytes []byte) (*Request, error) { + var req ocspRequest + rest, err := asn1.Unmarshal(bytes, &req) + if err != nil { + return nil, err + } + if len(rest) > 0 { + return nil, ParseError("trailing data in OCSP request") + } + + if len(req.TBSRequest.RequestList) == 0 { + return nil, ParseError("OCSP request contains no request body") + } + innerRequest := req.TBSRequest.RequestList[0] + + hashFunc := getHashAlgorithmFromOID(innerRequest.Cert.HashAlgorithm.Algorithm) + if hashFunc == crypto.Hash(0) { + return nil, ParseError("OCSP request uses unknown hash function") + } + + return &Request{ + HashAlgorithm: hashFunc, + IssuerNameHash: innerRequest.Cert.NameHash, + IssuerKeyHash: innerRequest.Cert.IssuerKeyHash, + SerialNumber: innerRequest.Cert.SerialNumber, + }, nil +} + +// ParseResponse parses an OCSP response in DER form. It only supports +// responses for a single certificate. If the response contains a certificate +// then the signature over the response is checked. If issuer is not nil then +// it will be used to validate the signature or embedded certificate. +// +// Invalid responses and parse failures will result in a ParseError. +// Error responses will result in a ResponseError. +func ParseResponse(bytes []byte, issuer *x509.Certificate) (*Response, error) { + return ParseResponseForCert(bytes, nil, issuer) +} + +// ParseResponseForCert parses an OCSP response in DER form and searches for a +// Response relating to cert. If such a Response is found and the OCSP response +// contains a certificate then the signature over the response is checked. If +// issuer is not nil then it will be used to validate the signature or embedded +// certificate. +// +// Invalid responses and parse failures will result in a ParseError. +// Error responses will result in a ResponseError. +func ParseResponseForCert(bytes []byte, cert, issuer *x509.Certificate) (*Response, error) { + var resp responseASN1 + rest, err := asn1.Unmarshal(bytes, &resp) + if err != nil { + return nil, err + } + if len(rest) > 0 { + return nil, ParseError("trailing data in OCSP response") + } + + if status := ResponseStatus(resp.Status); status != Success { + return nil, ResponseError{status} + } + + if !resp.Response.ResponseType.Equal(idPKIXOCSPBasic) { + return nil, ParseError("bad OCSP response type") + } + + var basicResp basicResponse + rest, err = asn1.Unmarshal(resp.Response.Response, &basicResp) + if err != nil { + return nil, err + } + + if len(basicResp.Certificates) > 1 { + return nil, ParseError("OCSP response contains bad number of certificates") + } + + if n := len(basicResp.TBSResponseData.Responses); n == 0 || cert == nil && n > 1 { + return nil, ParseError("OCSP response contains bad number of responses") + } + + var singleResp singleResponse + if cert == nil { + singleResp = basicResp.TBSResponseData.Responses[0] + } else { + match := false + for _, resp := range basicResp.TBSResponseData.Responses { + if cert.SerialNumber.Cmp(resp.CertID.SerialNumber) == 0 { + singleResp = resp + match = true + break + } + } + if !match { + return nil, ParseError("no response matching the supplied certificate") + } + } + + ret := &Response{ + TBSResponseData: basicResp.TBSResponseData.Raw, + Signature: basicResp.Signature.RightAlign(), + SignatureAlgorithm: getSignatureAlgorithmFromOID(basicResp.SignatureAlgorithm.Algorithm), + Extensions: singleResp.SingleExtensions, + SerialNumber: singleResp.CertID.SerialNumber, + ProducedAt: basicResp.TBSResponseData.ProducedAt, + ThisUpdate: singleResp.ThisUpdate, + NextUpdate: singleResp.NextUpdate, + } + + // Handle the ResponderID CHOICE tag. ResponderID can be flattened into + // TBSResponseData once https://go-review.googlesource.com/34503 has been + // released. + rawResponderID := basicResp.TBSResponseData.RawResponderID + switch rawResponderID.Tag { + case 1: // Name + var rdn pkix.RDNSequence + if rest, err := asn1.Unmarshal(rawResponderID.Bytes, &rdn); err != nil || len(rest) != 0 { + return nil, ParseError("invalid responder name") + } + ret.RawResponderName = rawResponderID.Bytes + case 2: // KeyHash + if rest, err := asn1.Unmarshal(rawResponderID.Bytes, &ret.ResponderKeyHash); err != nil || len(rest) != 0 { + return nil, ParseError("invalid responder key hash") + } + default: + return nil, ParseError("invalid responder id tag") + } + + if len(basicResp.Certificates) > 0 { + ret.Certificate, err = x509.ParseCertificate(basicResp.Certificates[0].FullBytes) + if err != nil { + return nil, err + } + + if err := ret.CheckSignatureFrom(ret.Certificate); err != nil { + return nil, ParseError("bad signature on embedded certificate: " + err.Error()) + } + + if issuer != nil { + if err := issuer.CheckSignature(ret.Certificate.SignatureAlgorithm, ret.Certificate.RawTBSCertificate, ret.Certificate.Signature); err != nil { + return nil, ParseError("bad OCSP signature: " + err.Error()) + } + } + } else if issuer != nil { + if err := ret.CheckSignatureFrom(issuer); err != nil { + return nil, ParseError("bad OCSP signature: " + err.Error()) + } + } + + for _, ext := range singleResp.SingleExtensions { + if ext.Critical { + return nil, ParseError("unsupported critical extension") + } + } + + for h, oid := range hashOIDs { + if singleResp.CertID.HashAlgorithm.Algorithm.Equal(oid) { + ret.IssuerHash = h + break + } + } + if ret.IssuerHash == 0 { + return nil, ParseError("unsupported issuer hash algorithm") + } + + switch { + case bool(singleResp.Good): + ret.Status = Good + case bool(singleResp.Unknown): + ret.Status = Unknown + default: + ret.Status = Revoked + ret.RevokedAt = singleResp.Revoked.RevocationTime + ret.RevocationReason = int(singleResp.Revoked.Reason) + } + + return ret, nil +} + +// RequestOptions contains options for constructing OCSP requests. +type RequestOptions struct { + // Hash contains the hash function that should be used when + // constructing the OCSP request. If zero, SHA-1 will be used. + Hash crypto.Hash +} + +func (opts *RequestOptions) hash() crypto.Hash { + if opts == nil || opts.Hash == 0 { + // SHA-1 is nearly universally used in OCSP. + return crypto.SHA1 + } + return opts.Hash +} + +// CreateRequest returns a DER-encoded, OCSP request for the status of cert. If +// opts is nil then sensible defaults are used. +func CreateRequest(cert, issuer *x509.Certificate, opts *RequestOptions) ([]byte, error) { + hashFunc := opts.hash() + + // OCSP seems to be the only place where these raw hash identifiers are + // used. I took the following from + // http://msdn.microsoft.com/en-us/library/ff635603.aspx + _, ok := hashOIDs[hashFunc] + if !ok { + return nil, x509.ErrUnsupportedAlgorithm + } + + if !hashFunc.Available() { + return nil, x509.ErrUnsupportedAlgorithm + } + h := opts.hash().New() + + var publicKeyInfo struct { + Algorithm pkix.AlgorithmIdentifier + PublicKey asn1.BitString + } + if _, err := asn1.Unmarshal(issuer.RawSubjectPublicKeyInfo, &publicKeyInfo); err != nil { + return nil, err + } + + h.Write(publicKeyInfo.PublicKey.RightAlign()) + issuerKeyHash := h.Sum(nil) + + h.Reset() + h.Write(issuer.RawSubject) + issuerNameHash := h.Sum(nil) + + req := &Request{ + HashAlgorithm: hashFunc, + IssuerNameHash: issuerNameHash, + IssuerKeyHash: issuerKeyHash, + SerialNumber: cert.SerialNumber, + } + return req.Marshal() +} + +// CreateResponse returns a DER-encoded OCSP response with the specified contents. +// The fields in the response are populated as follows: +// +// The responder cert is used to populate the responder's name field, and the +// certificate itself is provided alongside the OCSP response signature. +// +// The issuer cert is used to puplate the IssuerNameHash and IssuerKeyHash fields. +// +// The template is used to populate the SerialNumber, Status, RevokedAt, +// RevocationReason, ThisUpdate, and NextUpdate fields. +// +// If template.IssuerHash is not set, SHA1 will be used. +// +// The ProducedAt date is automatically set to the current date, to the nearest minute. +func CreateResponse(issuer, responderCert *x509.Certificate, template Response, priv crypto.Signer) ([]byte, error) { + var publicKeyInfo struct { + Algorithm pkix.AlgorithmIdentifier + PublicKey asn1.BitString + } + if _, err := asn1.Unmarshal(issuer.RawSubjectPublicKeyInfo, &publicKeyInfo); err != nil { + return nil, err + } + + if template.IssuerHash == 0 { + template.IssuerHash = crypto.SHA1 + } + hashOID := getOIDFromHashAlgorithm(template.IssuerHash) + if hashOID == nil { + return nil, errors.New("unsupported issuer hash algorithm") + } + + if !template.IssuerHash.Available() { + return nil, fmt.Errorf("issuer hash algorithm %v not linked into binary", template.IssuerHash) + } + h := template.IssuerHash.New() + h.Write(publicKeyInfo.PublicKey.RightAlign()) + issuerKeyHash := h.Sum(nil) + + h.Reset() + h.Write(issuer.RawSubject) + issuerNameHash := h.Sum(nil) + + innerResponse := singleResponse{ + CertID: certID{ + HashAlgorithm: pkix.AlgorithmIdentifier{ + Algorithm: hashOID, + Parameters: asn1.RawValue{Tag: 5 /* ASN.1 NULL */}, + }, + NameHash: issuerNameHash, + IssuerKeyHash: issuerKeyHash, + SerialNumber: template.SerialNumber, + }, + ThisUpdate: template.ThisUpdate.UTC(), + NextUpdate: template.NextUpdate.UTC(), + SingleExtensions: template.ExtraExtensions, + } + + switch template.Status { + case Good: + innerResponse.Good = true + case Unknown: + innerResponse.Unknown = true + case Revoked: + innerResponse.Revoked = revokedInfo{ + RevocationTime: template.RevokedAt.UTC(), + Reason: asn1.Enumerated(template.RevocationReason), + } + } + + rawResponderID := asn1.RawValue{ + Class: 2, // context-specific + Tag: 1, // Name (explicit tag) + IsCompound: true, + Bytes: responderCert.RawSubject, + } + tbsResponseData := responseData{ + Version: 0, + RawResponderID: rawResponderID, + ProducedAt: time.Now().Truncate(time.Minute).UTC(), + Responses: []singleResponse{innerResponse}, + } + + tbsResponseDataDER, err := asn1.Marshal(tbsResponseData) + if err != nil { + return nil, err + } + + hashFunc, signatureAlgorithm, err := signingParamsForPublicKey(priv.Public(), template.SignatureAlgorithm) + if err != nil { + return nil, err + } + + responseHash := hashFunc.New() + responseHash.Write(tbsResponseDataDER) + signature, err := priv.Sign(rand.Reader, responseHash.Sum(nil), hashFunc) + if err != nil { + return nil, err + } + + response := basicResponse{ + TBSResponseData: tbsResponseData, + SignatureAlgorithm: signatureAlgorithm, + Signature: asn1.BitString{ + Bytes: signature, + BitLength: 8 * len(signature), + }, + } + if template.Certificate != nil { + response.Certificates = []asn1.RawValue{ + {FullBytes: template.Certificate.Raw}, + } + } + responseDER, err := asn1.Marshal(response) + if err != nil { + return nil, err + } + + return asn1.Marshal(responseASN1{ + Status: asn1.Enumerated(Success), + Response: responseBytes{ + ResponseType: idPKIXOCSPBasic, + Response: responseDER, + }, + }) +} diff --git a/vendor/golang.org/x/crypto/pkcs12/crypto.go b/vendor/golang.org/x/crypto/pkcs12/crypto.go index 4bd4470ec04..484ca51b715 100644 --- a/vendor/golang.org/x/crypto/pkcs12/crypto.go +++ b/vendor/golang.org/x/crypto/pkcs12/crypto.go @@ -124,7 +124,7 @@ func pbDecrypt(info decryptable, password []byte) (decrypted []byte, err error) return } -// decryptable abstracts a object that contains ciphertext. +// decryptable abstracts an object that contains ciphertext. type decryptable interface { Algorithm() pkix.AlgorithmIdentifier Data() []byte diff --git a/vendor/golang.org/x/crypto/pkcs12/internal/rc2/rc2.go b/vendor/golang.org/x/crypto/pkcs12/internal/rc2/rc2.go index 8c7090258c5..7499e3fb69d 100644 --- a/vendor/golang.org/x/crypto/pkcs12/internal/rc2/rc2.go +++ b/vendor/golang.org/x/crypto/pkcs12/internal/rc2/rc2.go @@ -122,7 +122,6 @@ func (c *rc2Cipher) Encrypt(dst, src []byte) { r3 = r3 + c.k[r2&63] for j <= 40 { - // mix r0 r0 = r0 + c.k[j] + (r3 & r2) + ((^r3) & r1) r0 = rotl16(r0, 1) @@ -151,7 +150,6 @@ func (c *rc2Cipher) Encrypt(dst, src []byte) { r3 = r3 + c.k[r2&63] for j <= 60 { - // mix r0 r0 = r0 + c.k[j] + (r3 & r2) + ((^r3) & r1) r0 = rotl16(r0, 1) @@ -244,7 +242,6 @@ func (c *rc2Cipher) Decrypt(dst, src []byte) { r0 = r0 - c.k[r3&63] for j >= 0 { - // unmix r3 r3 = rotl16(r3, 16-5) r3 = r3 - c.k[j] - (r2 & r1) - ((^r2) & r0) diff --git a/vendor/golang.org/x/crypto/salsa20/salsa/salsa20_amd64.go b/vendor/golang.org/x/crypto/salsa20/salsa/salsa20_amd64.go index c34d362ee16..f9269c38484 100644 --- a/vendor/golang.org/x/crypto/salsa20/salsa/salsa20_amd64.go +++ b/vendor/golang.org/x/crypto/salsa20/salsa/salsa20_amd64.go @@ -13,7 +13,7 @@ package salsa func salsa2020XORKeyStream(out, in *byte, n uint64, nonce, key *byte) // XORKeyStream crypts bytes from in to out using the given key and counters. -// In and out may be the same slice but otherwise should not overlap. Counter +// In and out must overlap entirely or not at all. Counter // contains the raw salsa20 counter bytes (both nonce and block counter). func XORKeyStream(out, in []byte, counter *[16]byte, key *[32]byte) { if len(in) == 0 { diff --git a/vendor/golang.org/x/crypto/salsa20/salsa/salsa20_ref.go b/vendor/golang.org/x/crypto/salsa20/salsa/salsa20_ref.go index 95f8ca5bb96..22126d17c4e 100644 --- a/vendor/golang.org/x/crypto/salsa20/salsa/salsa20_ref.go +++ b/vendor/golang.org/x/crypto/salsa20/salsa/salsa20_ref.go @@ -203,7 +203,7 @@ func core(out *[64]byte, in *[16]byte, k *[32]byte, c *[16]byte) { } // XORKeyStream crypts bytes from in to out using the given key and counters. -// In and out may be the same slice but otherwise should not overlap. Counter +// In and out must overlap entirely or not at all. Counter // contains the raw salsa20 counter bytes (both nonce and block counter). func XORKeyStream(out, in []byte, counter *[16]byte, key *[32]byte) { var block [64]byte diff --git a/vendor/golang.org/x/crypto/ssh/BUILD b/vendor/golang.org/x/crypto/ssh/BUILD index 3b248104645..444eac4a4c2 100644 --- a/vendor/golang.org/x/crypto/ssh/BUILD +++ b/vendor/golang.org/x/crypto/ssh/BUILD @@ -29,6 +29,8 @@ go_library( deps = [ "//vendor/golang.org/x/crypto/curve25519:go_default_library", "//vendor/golang.org/x/crypto/ed25519:go_default_library", + "//vendor/golang.org/x/crypto/internal/chacha20:go_default_library", + "//vendor/golang.org/x/crypto/poly1305:go_default_library", ], ) diff --git a/vendor/golang.org/x/crypto/ssh/buffer.go b/vendor/golang.org/x/crypto/ssh/buffer.go index 6931b5114fe..1ab07d078db 100644 --- a/vendor/golang.org/x/crypto/ssh/buffer.go +++ b/vendor/golang.org/x/crypto/ssh/buffer.go @@ -51,13 +51,12 @@ func (b *buffer) write(buf []byte) { } // eof closes the buffer. Reads from the buffer once all -// the data has been consumed will receive os.EOF. -func (b *buffer) eof() error { +// the data has been consumed will receive io.EOF. +func (b *buffer) eof() { b.Cond.L.Lock() b.closed = true b.Cond.Signal() b.Cond.L.Unlock() - return nil } // Read reads data from the internal buffer in buf. Reads will block diff --git a/vendor/golang.org/x/crypto/ssh/certs.go b/vendor/golang.org/x/crypto/ssh/certs.go index b1f02207819..42106f3f2cb 100644 --- a/vendor/golang.org/x/crypto/ssh/certs.go +++ b/vendor/golang.org/x/crypto/ssh/certs.go @@ -44,7 +44,9 @@ type Signature struct { const CertTimeInfinity = 1<<64 - 1 // An Certificate represents an OpenSSH certificate as defined in -// [PROTOCOL.certkeys]?rev=1.8. +// [PROTOCOL.certkeys]?rev=1.8. The Certificate type implements the +// PublicKey interface, so it can be unmarshaled using +// ParsePublicKey. type Certificate struct { Nonce []byte Key PublicKey @@ -340,10 +342,10 @@ func (c *CertChecker) Authenticate(conn ConnMetadata, pubKey PublicKey) (*Permis // the signature of the certificate. func (c *CertChecker) CheckCert(principal string, cert *Certificate) error { if c.IsRevoked != nil && c.IsRevoked(cert) { - return fmt.Errorf("ssh: certicate serial %d revoked", cert.Serial) + return fmt.Errorf("ssh: certificate serial %d revoked", cert.Serial) } - for opt, _ := range cert.CriticalOptions { + for opt := range cert.CriticalOptions { // sourceAddressCriticalOption will be enforced by // serverAuthenticate if opt == sourceAddressCriticalOption { diff --git a/vendor/golang.org/x/crypto/ssh/channel.go b/vendor/golang.org/x/crypto/ssh/channel.go index 195530ea0da..c0834c00dfe 100644 --- a/vendor/golang.org/x/crypto/ssh/channel.go +++ b/vendor/golang.org/x/crypto/ssh/channel.go @@ -205,32 +205,32 @@ type channel struct { // writePacket sends a packet. If the packet is a channel close, it updates // sentClose. This method takes the lock c.writeMu. -func (c *channel) writePacket(packet []byte) error { - c.writeMu.Lock() - if c.sentClose { - c.writeMu.Unlock() +func (ch *channel) writePacket(packet []byte) error { + ch.writeMu.Lock() + if ch.sentClose { + ch.writeMu.Unlock() return io.EOF } - c.sentClose = (packet[0] == msgChannelClose) - err := c.mux.conn.writePacket(packet) - c.writeMu.Unlock() + ch.sentClose = (packet[0] == msgChannelClose) + err := ch.mux.conn.writePacket(packet) + ch.writeMu.Unlock() return err } -func (c *channel) sendMessage(msg interface{}) error { +func (ch *channel) sendMessage(msg interface{}) error { if debugMux { - log.Printf("send(%d): %#v", c.mux.chanList.offset, msg) + log.Printf("send(%d): %#v", ch.mux.chanList.offset, msg) } p := Marshal(msg) - binary.BigEndian.PutUint32(p[1:], c.remoteId) - return c.writePacket(p) + binary.BigEndian.PutUint32(p[1:], ch.remoteId) + return ch.writePacket(p) } // WriteExtended writes data to a specific extended stream. These streams are // used, for example, for stderr. -func (c *channel) WriteExtended(data []byte, extendedCode uint32) (n int, err error) { - if c.sentEOF { +func (ch *channel) WriteExtended(data []byte, extendedCode uint32) (n int, err error) { + if ch.sentEOF { return 0, io.EOF } // 1 byte message type, 4 bytes remoteId, 4 bytes data length @@ -241,16 +241,16 @@ func (c *channel) WriteExtended(data []byte, extendedCode uint32) (n int, err er opCode = msgChannelExtendedData } - c.writeMu.Lock() - packet := c.packetPool[extendedCode] + ch.writeMu.Lock() + packet := ch.packetPool[extendedCode] // We don't remove the buffer from packetPool, so // WriteExtended calls from different goroutines will be // flagged as errors by the race detector. - c.writeMu.Unlock() + ch.writeMu.Unlock() for len(data) > 0 { - space := min(c.maxRemotePayload, len(data)) - if space, err = c.remoteWin.reserve(space); err != nil { + space := min(ch.maxRemotePayload, len(data)) + if space, err = ch.remoteWin.reserve(space); err != nil { return n, err } if want := headerLength + space; uint32(cap(packet)) < want { @@ -262,13 +262,13 @@ func (c *channel) WriteExtended(data []byte, extendedCode uint32) (n int, err er todo := data[:space] packet[0] = opCode - binary.BigEndian.PutUint32(packet[1:], c.remoteId) + binary.BigEndian.PutUint32(packet[1:], ch.remoteId) if extendedCode > 0 { binary.BigEndian.PutUint32(packet[5:], uint32(extendedCode)) } binary.BigEndian.PutUint32(packet[headerLength-4:], uint32(len(todo))) copy(packet[headerLength:], todo) - if err = c.writePacket(packet); err != nil { + if err = ch.writePacket(packet); err != nil { return n, err } @@ -276,14 +276,14 @@ func (c *channel) WriteExtended(data []byte, extendedCode uint32) (n int, err er data = data[len(todo):] } - c.writeMu.Lock() - c.packetPool[extendedCode] = packet - c.writeMu.Unlock() + ch.writeMu.Lock() + ch.packetPool[extendedCode] = packet + ch.writeMu.Unlock() return n, err } -func (c *channel) handleData(packet []byte) error { +func (ch *channel) handleData(packet []byte) error { headerLen := 9 isExtendedData := packet[0] == msgChannelExtendedData if isExtendedData { @@ -303,7 +303,7 @@ func (c *channel) handleData(packet []byte) error { if length == 0 { return nil } - if length > c.maxIncomingPayload { + if length > ch.maxIncomingPayload { // TODO(hanwen): should send Disconnect? return errors.New("ssh: incoming packet exceeds maximum payload size") } @@ -313,21 +313,21 @@ func (c *channel) handleData(packet []byte) error { return errors.New("ssh: wrong packet length") } - c.windowMu.Lock() - if c.myWindow < length { - c.windowMu.Unlock() + ch.windowMu.Lock() + if ch.myWindow < length { + ch.windowMu.Unlock() // TODO(hanwen): should send Disconnect with reason? return errors.New("ssh: remote side wrote too much") } - c.myWindow -= length - c.windowMu.Unlock() + ch.myWindow -= length + ch.windowMu.Unlock() if extended == 1 { - c.extPending.write(data) + ch.extPending.write(data) } else if extended > 0 { // discard other extended data. } else { - c.pending.write(data) + ch.pending.write(data) } return nil } @@ -384,31 +384,31 @@ func (c *channel) close() { // responseMessageReceived is called when a success or failure message is // received on a channel to check that such a message is reasonable for the // given channel. -func (c *channel) responseMessageReceived() error { - if c.direction == channelInbound { +func (ch *channel) responseMessageReceived() error { + if ch.direction == channelInbound { return errors.New("ssh: channel response message received on inbound channel") } - if c.decided { + if ch.decided { return errors.New("ssh: duplicate response received for channel") } - c.decided = true + ch.decided = true return nil } -func (c *channel) handlePacket(packet []byte) error { +func (ch *channel) handlePacket(packet []byte) error { switch packet[0] { case msgChannelData, msgChannelExtendedData: - return c.handleData(packet) + return ch.handleData(packet) case msgChannelClose: - c.sendMessage(channelCloseMsg{PeersId: c.remoteId}) - c.mux.chanList.remove(c.localId) - c.close() + ch.sendMessage(channelCloseMsg{PeersID: ch.remoteId}) + ch.mux.chanList.remove(ch.localId) + ch.close() return nil case msgChannelEOF: // RFC 4254 is mute on how EOF affects dataExt messages but // it is logical to signal EOF at the same time. - c.extPending.eof() - c.pending.eof() + ch.extPending.eof() + ch.pending.eof() return nil } @@ -419,24 +419,24 @@ func (c *channel) handlePacket(packet []byte) error { switch msg := decoded.(type) { case *channelOpenFailureMsg: - if err := c.responseMessageReceived(); err != nil { + if err := ch.responseMessageReceived(); err != nil { return err } - c.mux.chanList.remove(msg.PeersId) - c.msg <- msg + ch.mux.chanList.remove(msg.PeersID) + ch.msg <- msg case *channelOpenConfirmMsg: - if err := c.responseMessageReceived(); err != nil { + if err := ch.responseMessageReceived(); err != nil { return err } if msg.MaxPacketSize < minPacketLength || msg.MaxPacketSize > 1<<31 { return fmt.Errorf("ssh: invalid MaxPacketSize %d from peer", msg.MaxPacketSize) } - c.remoteId = msg.MyId - c.maxRemotePayload = msg.MaxPacketSize - c.remoteWin.add(msg.MyWindow) - c.msg <- msg + ch.remoteId = msg.MyID + ch.maxRemotePayload = msg.MaxPacketSize + ch.remoteWin.add(msg.MyWindow) + ch.msg <- msg case *windowAdjustMsg: - if !c.remoteWin.add(msg.AdditionalBytes) { + if !ch.remoteWin.add(msg.AdditionalBytes) { return fmt.Errorf("ssh: invalid window update for %d bytes", msg.AdditionalBytes) } case *channelRequestMsg: @@ -444,12 +444,12 @@ func (c *channel) handlePacket(packet []byte) error { Type: msg.Request, WantReply: msg.WantReply, Payload: msg.RequestSpecificData, - ch: c, + ch: ch, } - c.incomingRequests <- &req + ch.incomingRequests <- &req default: - c.msg <- msg + ch.msg <- msg } return nil } @@ -488,23 +488,23 @@ func (e *extChannel) Read(data []byte) (n int, err error) { return e.ch.ReadExtended(data, e.code) } -func (c *channel) Accept() (Channel, <-chan *Request, error) { - if c.decided { +func (ch *channel) Accept() (Channel, <-chan *Request, error) { + if ch.decided { return nil, nil, errDecidedAlready } - c.maxIncomingPayload = channelMaxPacket + ch.maxIncomingPayload = channelMaxPacket confirm := channelOpenConfirmMsg{ - PeersId: c.remoteId, - MyId: c.localId, - MyWindow: c.myWindow, - MaxPacketSize: c.maxIncomingPayload, + PeersID: ch.remoteId, + MyID: ch.localId, + MyWindow: ch.myWindow, + MaxPacketSize: ch.maxIncomingPayload, } - c.decided = true - if err := c.sendMessage(confirm); err != nil { + ch.decided = true + if err := ch.sendMessage(confirm); err != nil { return nil, nil, err } - return c, c.incomingRequests, nil + return ch, ch.incomingRequests, nil } func (ch *channel) Reject(reason RejectionReason, message string) error { @@ -512,7 +512,7 @@ func (ch *channel) Reject(reason RejectionReason, message string) error { return errDecidedAlready } reject := channelOpenFailureMsg{ - PeersId: ch.remoteId, + PeersID: ch.remoteId, Reason: reason, Message: message, Language: "en", @@ -541,7 +541,7 @@ func (ch *channel) CloseWrite() error { } ch.sentEOF = true return ch.sendMessage(channelEOFMsg{ - PeersId: ch.remoteId}) + PeersID: ch.remoteId}) } func (ch *channel) Close() error { @@ -550,7 +550,7 @@ func (ch *channel) Close() error { } return ch.sendMessage(channelCloseMsg{ - PeersId: ch.remoteId}) + PeersID: ch.remoteId}) } // Extended returns an io.ReadWriter that sends and receives data on the given, @@ -577,7 +577,7 @@ func (ch *channel) SendRequest(name string, wantReply bool, payload []byte) (boo } msg := channelRequestMsg{ - PeersId: ch.remoteId, + PeersID: ch.remoteId, Request: name, WantReply: wantReply, RequestSpecificData: payload, @@ -614,11 +614,11 @@ func (ch *channel) ackRequest(ok bool) error { var msg interface{} if !ok { msg = channelRequestFailureMsg{ - PeersId: ch.remoteId, + PeersID: ch.remoteId, } } else { msg = channelRequestSuccessMsg{ - PeersId: ch.remoteId, + PeersID: ch.remoteId, } } return ch.sendMessage(msg) diff --git a/vendor/golang.org/x/crypto/ssh/cipher.go b/vendor/golang.org/x/crypto/ssh/cipher.go index 22bb30ccd78..30a49fdf27a 100644 --- a/vendor/golang.org/x/crypto/ssh/cipher.go +++ b/vendor/golang.org/x/crypto/ssh/cipher.go @@ -16,6 +16,9 @@ import ( "hash" "io" "io/ioutil" + + "golang.org/x/crypto/internal/chacha20" + "golang.org/x/crypto/poly1305" ) const ( @@ -53,78 +56,78 @@ func newRC4(key, iv []byte) (cipher.Stream, error) { return rc4.NewCipher(key) } -type streamCipherMode struct { - keySize int - ivSize int - skip int - createFunc func(key, iv []byte) (cipher.Stream, error) +type cipherMode struct { + keySize int + ivSize int + create func(key, iv []byte, macKey []byte, algs directionAlgorithms) (packetCipher, error) } -func (c *streamCipherMode) createStream(key, iv []byte) (cipher.Stream, error) { - if len(key) < c.keySize { - panic("ssh: key length too small for cipher") - } - if len(iv) < c.ivSize { - panic("ssh: iv too small for cipher") - } - - stream, err := c.createFunc(key[:c.keySize], iv[:c.ivSize]) - if err != nil { - return nil, err - } - - var streamDump []byte - if c.skip > 0 { - streamDump = make([]byte, 512) - } - - for remainingToDump := c.skip; remainingToDump > 0; { - dumpThisTime := remainingToDump - if dumpThisTime > len(streamDump) { - dumpThisTime = len(streamDump) +func streamCipherMode(skip int, createFunc func(key, iv []byte) (cipher.Stream, error)) func(key, iv []byte, macKey []byte, algs directionAlgorithms) (packetCipher, error) { + return func(key, iv, macKey []byte, algs directionAlgorithms) (packetCipher, error) { + stream, err := createFunc(key, iv) + if err != nil { + return nil, err } - stream.XORKeyStream(streamDump[:dumpThisTime], streamDump[:dumpThisTime]) - remainingToDump -= dumpThisTime - } - return stream, nil + var streamDump []byte + if skip > 0 { + streamDump = make([]byte, 512) + } + + for remainingToDump := skip; remainingToDump > 0; { + dumpThisTime := remainingToDump + if dumpThisTime > len(streamDump) { + dumpThisTime = len(streamDump) + } + stream.XORKeyStream(streamDump[:dumpThisTime], streamDump[:dumpThisTime]) + remainingToDump -= dumpThisTime + } + + mac := macModes[algs.MAC].new(macKey) + return &streamPacketCipher{ + mac: mac, + etm: macModes[algs.MAC].etm, + macResult: make([]byte, mac.Size()), + cipher: stream, + }, nil + } } // cipherModes documents properties of supported ciphers. Ciphers not included // are not supported and will not be negotiated, even if explicitly requested in // ClientConfig.Crypto.Ciphers. -var cipherModes = map[string]*streamCipherMode{ +var cipherModes = map[string]*cipherMode{ // Ciphers from RFC4344, which introduced many CTR-based ciphers. Algorithms // are defined in the order specified in the RFC. - "aes128-ctr": {16, aes.BlockSize, 0, newAESCTR}, - "aes192-ctr": {24, aes.BlockSize, 0, newAESCTR}, - "aes256-ctr": {32, aes.BlockSize, 0, newAESCTR}, + "aes128-ctr": {16, aes.BlockSize, streamCipherMode(0, newAESCTR)}, + "aes192-ctr": {24, aes.BlockSize, streamCipherMode(0, newAESCTR)}, + "aes256-ctr": {32, aes.BlockSize, streamCipherMode(0, newAESCTR)}, // Ciphers from RFC4345, which introduces security-improved arcfour ciphers. // They are defined in the order specified in the RFC. - "arcfour128": {16, 0, 1536, newRC4}, - "arcfour256": {32, 0, 1536, newRC4}, + "arcfour128": {16, 0, streamCipherMode(1536, newRC4)}, + "arcfour256": {32, 0, streamCipherMode(1536, newRC4)}, // Cipher defined in RFC 4253, which describes SSH Transport Layer Protocol. // Note that this cipher is not safe, as stated in RFC 4253: "Arcfour (and // RC4) has problems with weak keys, and should be used with caution." // RFC4345 introduces improved versions of Arcfour. - "arcfour": {16, 0, 0, newRC4}, + "arcfour": {16, 0, streamCipherMode(0, newRC4)}, - // AES-GCM is not a stream cipher, so it is constructed with a - // special case. If we add any more non-stream ciphers, we - // should invest a cleaner way to do this. - gcmCipherID: {16, 12, 0, nil}, + // AEAD ciphers + gcmCipherID: {16, 12, newGCMCipher}, + chacha20Poly1305ID: {64, 0, newChaCha20Cipher}, // CBC mode is insecure and so is not included in the default config. // (See http://www.isg.rhul.ac.uk/~kp/SandPfinal.pdf). If absolutely // needed, it's possible to specify a custom Config to enable it. // You should expect that an active attacker can recover plaintext if // you do. - aes128cbcID: {16, aes.BlockSize, 0, nil}, + aes128cbcID: {16, aes.BlockSize, newAESCBCCipher}, - // 3des-cbc is insecure and is disabled by default. - tripledescbcID: {24, des.BlockSize, 0, nil}, + // 3des-cbc is insecure and is not included in the default + // config. + tripledescbcID: {24, des.BlockSize, newTripleDESCBCCipher}, } // prefixLen is the length of the packet prefix that contains the packet length @@ -304,7 +307,7 @@ type gcmCipher struct { buf []byte } -func newGCMCipher(iv, key, macKey []byte) (packetCipher, error) { +func newGCMCipher(key, iv, unusedMacKey []byte, unusedAlgs directionAlgorithms) (packetCipher, error) { c, err := aes.NewCipher(key) if err != nil { return nil, err @@ -372,7 +375,7 @@ func (c *gcmCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) { } length := binary.BigEndian.Uint32(c.prefix[:]) if length > maxPacket { - return nil, errors.New("ssh: max packet length exceeded.") + return nil, errors.New("ssh: max packet length exceeded") } if cap(c.buf) < int(length+gcmTagSize) { @@ -422,7 +425,7 @@ type cbcCipher struct { oracleCamouflage uint32 } -func newCBCCipher(c cipher.Block, iv, key, macKey []byte, algs directionAlgorithms) (packetCipher, error) { +func newCBCCipher(c cipher.Block, key, iv, macKey []byte, algs directionAlgorithms) (packetCipher, error) { cbc := &cbcCipher{ mac: macModes[algs.MAC].new(macKey), decrypter: cipher.NewCBCDecrypter(c, iv), @@ -436,13 +439,13 @@ func newCBCCipher(c cipher.Block, iv, key, macKey []byte, algs directionAlgorith return cbc, nil } -func newAESCBCCipher(iv, key, macKey []byte, algs directionAlgorithms) (packetCipher, error) { +func newAESCBCCipher(key, iv, macKey []byte, algs directionAlgorithms) (packetCipher, error) { c, err := aes.NewCipher(key) if err != nil { return nil, err } - cbc, err := newCBCCipher(c, iv, key, macKey, algs) + cbc, err := newCBCCipher(c, key, iv, macKey, algs) if err != nil { return nil, err } @@ -450,13 +453,13 @@ func newAESCBCCipher(iv, key, macKey []byte, algs directionAlgorithms) (packetCi return cbc, nil } -func newTripleDESCBCCipher(iv, key, macKey []byte, algs directionAlgorithms) (packetCipher, error) { +func newTripleDESCBCCipher(key, iv, macKey []byte, algs directionAlgorithms) (packetCipher, error) { c, err := des.NewTripleDESCipher(key) if err != nil { return nil, err } - cbc, err := newCBCCipher(c, iv, key, macKey, algs) + cbc, err := newCBCCipher(c, key, iv, macKey, algs) if err != nil { return nil, err } @@ -548,11 +551,11 @@ func (c *cbcCipher) readPacketLeaky(seqNum uint32, r io.Reader) ([]byte, error) c.packetData = c.packetData[:entirePacketSize] } - if n, err := io.ReadFull(r, c.packetData[firstBlockLength:]); err != nil { + n, err := io.ReadFull(r, c.packetData[firstBlockLength:]) + if err != nil { return nil, err - } else { - c.oracleCamouflage -= uint32(n) } + c.oracleCamouflage -= uint32(n) remainingCrypted := c.packetData[firstBlockLength:macStart] c.decrypter.CryptBlocks(remainingCrypted, remainingCrypted) @@ -627,3 +630,142 @@ func (c *cbcCipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, pack return nil } + +const chacha20Poly1305ID = "chacha20-poly1305@openssh.com" + +// chacha20Poly1305Cipher implements the chacha20-poly1305@openssh.com +// AEAD, which is described here: +// +// https://tools.ietf.org/html/draft-josefsson-ssh-chacha20-poly1305-openssh-00 +// +// the methods here also implement padding, which RFC4253 Section 6 +// also requires of stream ciphers. +type chacha20Poly1305Cipher struct { + lengthKey [32]byte + contentKey [32]byte + buf []byte +} + +func newChaCha20Cipher(key, unusedIV, unusedMACKey []byte, unusedAlgs directionAlgorithms) (packetCipher, error) { + if len(key) != 64 { + panic(len(key)) + } + + c := &chacha20Poly1305Cipher{ + buf: make([]byte, 256), + } + + copy(c.contentKey[:], key[:32]) + copy(c.lengthKey[:], key[32:]) + return c, nil +} + +// The Poly1305 key is obtained by encrypting 32 0-bytes. +var chacha20PolyKeyInput [32]byte + +func (c *chacha20Poly1305Cipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) { + var counter [16]byte + binary.BigEndian.PutUint64(counter[8:], uint64(seqNum)) + + var polyKey [32]byte + chacha20.XORKeyStream(polyKey[:], chacha20PolyKeyInput[:], &counter, &c.contentKey) + + encryptedLength := c.buf[:4] + if _, err := io.ReadFull(r, encryptedLength); err != nil { + return nil, err + } + + var lenBytes [4]byte + chacha20.XORKeyStream(lenBytes[:], encryptedLength, &counter, &c.lengthKey) + + length := binary.BigEndian.Uint32(lenBytes[:]) + if length > maxPacket { + return nil, errors.New("ssh: invalid packet length, packet too large") + } + + contentEnd := 4 + length + packetEnd := contentEnd + poly1305.TagSize + if uint32(cap(c.buf)) < packetEnd { + c.buf = make([]byte, packetEnd) + copy(c.buf[:], encryptedLength) + } else { + c.buf = c.buf[:packetEnd] + } + + if _, err := io.ReadFull(r, c.buf[4:packetEnd]); err != nil { + return nil, err + } + + var mac [poly1305.TagSize]byte + copy(mac[:], c.buf[contentEnd:packetEnd]) + if !poly1305.Verify(&mac, c.buf[:contentEnd], &polyKey) { + return nil, errors.New("ssh: MAC failure") + } + + counter[0] = 1 + + plain := c.buf[4:contentEnd] + chacha20.XORKeyStream(plain, plain, &counter, &c.contentKey) + + padding := plain[0] + if padding < 4 { + // padding is a byte, so it automatically satisfies + // the maximum size, which is 255. + return nil, fmt.Errorf("ssh: illegal padding %d", padding) + } + + if int(padding)+1 >= len(plain) { + return nil, fmt.Errorf("ssh: padding %d too large", padding) + } + + plain = plain[1 : len(plain)-int(padding)] + + return plain, nil +} + +func (c *chacha20Poly1305Cipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, payload []byte) error { + var counter [16]byte + binary.BigEndian.PutUint64(counter[8:], uint64(seqNum)) + + var polyKey [32]byte + chacha20.XORKeyStream(polyKey[:], chacha20PolyKeyInput[:], &counter, &c.contentKey) + + // There is no blocksize, so fall back to multiple of 8 byte + // padding, as described in RFC 4253, Sec 6. + const packetSizeMultiple = 8 + + padding := packetSizeMultiple - (1+len(payload))%packetSizeMultiple + if padding < 4 { + padding += packetSizeMultiple + } + + // size (4 bytes), padding (1), payload, padding, tag. + totalLength := 4 + 1 + len(payload) + padding + poly1305.TagSize + if cap(c.buf) < totalLength { + c.buf = make([]byte, totalLength) + } else { + c.buf = c.buf[:totalLength] + } + + binary.BigEndian.PutUint32(c.buf, uint32(1+len(payload)+padding)) + chacha20.XORKeyStream(c.buf, c.buf[:4], &counter, &c.lengthKey) + c.buf[4] = byte(padding) + copy(c.buf[5:], payload) + packetEnd := 5 + len(payload) + padding + if _, err := io.ReadFull(rand, c.buf[5+len(payload):packetEnd]); err != nil { + return err + } + + counter[0] = 1 + chacha20.XORKeyStream(c.buf[4:], c.buf[4:packetEnd], &counter, &c.contentKey) + + var mac [poly1305.TagSize]byte + poly1305.Sum(&mac, c.buf[:packetEnd], &polyKey) + + copy(c.buf[packetEnd:], mac[:]) + + if _, err := w.Write(c.buf); err != nil { + return err + } + return nil +} diff --git a/vendor/golang.org/x/crypto/ssh/client.go b/vendor/golang.org/x/crypto/ssh/client.go index a7e3263bcab..6fd1994553b 100644 --- a/vendor/golang.org/x/crypto/ssh/client.go +++ b/vendor/golang.org/x/crypto/ssh/client.go @@ -9,6 +9,7 @@ import ( "errors" "fmt" "net" + "os" "sync" "time" ) @@ -187,6 +188,10 @@ func Dial(network, addr string, config *ClientConfig) (*Client, error) { // net.Conn underlying the the SSH connection. type HostKeyCallback func(hostname string, remote net.Addr, key PublicKey) error +// BannerCallback is the function type used for treat the banner sent by +// the server. A BannerCallback receives the message sent by the remote server. +type BannerCallback func(message string) error + // A ClientConfig structure is used to configure a Client. It must not be // modified after having been passed to an SSH function. type ClientConfig struct { @@ -209,6 +214,12 @@ type ClientConfig struct { // FixedHostKey can be used for simplistic host key checks. HostKeyCallback HostKeyCallback + // BannerCallback is called during the SSH dance to display a custom + // server's message. The client configuration can supply this callback to + // handle it as wished. The function BannerDisplayStderr can be used for + // simplistic display on Stderr. + BannerCallback BannerCallback + // ClientVersion contains the version identification string that will // be used for the connection. If empty, a reasonable default is used. ClientVersion string @@ -255,3 +266,13 @@ func FixedHostKey(key PublicKey) HostKeyCallback { hk := &fixedHostKey{key} return hk.check } + +// BannerDisplayStderr returns a function that can be used for +// ClientConfig.BannerCallback to display banners on os.Stderr. +func BannerDisplayStderr() BannerCallback { + return func(banner string) error { + _, err := os.Stderr.WriteString(banner) + + return err + } +} diff --git a/vendor/golang.org/x/crypto/ssh/client_auth.go b/vendor/golang.org/x/crypto/ssh/client_auth.go index b882da0863a..5f44b77403e 100644 --- a/vendor/golang.org/x/crypto/ssh/client_auth.go +++ b/vendor/golang.org/x/crypto/ssh/client_auth.go @@ -11,6 +11,14 @@ import ( "io" ) +type authResult int + +const ( + authFailure authResult = iota + authPartialSuccess + authSuccess +) + // clientAuthenticate authenticates with the remote server. See RFC 4252. func (c *connection) clientAuthenticate(config *ClientConfig) error { // initiate user auth session @@ -37,11 +45,12 @@ func (c *connection) clientAuthenticate(config *ClientConfig) error { if err != nil { return err } - if ok { + if ok == authSuccess { // success return nil + } else if ok == authFailure { + tried[auth.method()] = true } - tried[auth.method()] = true if methods == nil { methods = lastMethods } @@ -82,7 +91,7 @@ type AuthMethod interface { // If authentication is not successful, a []string of alternative // method names is returned. If the slice is nil, it will be ignored // and the previous set of possible methods will be reused. - auth(session []byte, user string, p packetConn, rand io.Reader) (bool, []string, error) + auth(session []byte, user string, p packetConn, rand io.Reader) (authResult, []string, error) // method returns the RFC 4252 method name. method() string @@ -91,13 +100,13 @@ type AuthMethod interface { // "none" authentication, RFC 4252 section 5.2. type noneAuth int -func (n *noneAuth) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) { +func (n *noneAuth) auth(session []byte, user string, c packetConn, rand io.Reader) (authResult, []string, error) { if err := c.writePacket(Marshal(&userAuthRequestMsg{ User: user, Service: serviceSSH, Method: "none", })); err != nil { - return false, nil, err + return authFailure, nil, err } return handleAuthResponse(c) @@ -111,7 +120,7 @@ func (n *noneAuth) method() string { // a function call, e.g. by prompting the user. type passwordCallback func() (password string, err error) -func (cb passwordCallback) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) { +func (cb passwordCallback) auth(session []byte, user string, c packetConn, rand io.Reader) (authResult, []string, error) { type passwordAuthMsg struct { User string `sshtype:"50"` Service string @@ -125,7 +134,7 @@ func (cb passwordCallback) auth(session []byte, user string, c packetConn, rand // The program may only find out that the user doesn't have a password // when prompting. if err != nil { - return false, nil, err + return authFailure, nil, err } if err := c.writePacket(Marshal(&passwordAuthMsg{ @@ -135,7 +144,7 @@ func (cb passwordCallback) auth(session []byte, user string, c packetConn, rand Reply: false, Password: pw, })); err != nil { - return false, nil, err + return authFailure, nil, err } return handleAuthResponse(c) @@ -178,7 +187,7 @@ func (cb publicKeyCallback) method() string { return "publickey" } -func (cb publicKeyCallback) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) { +func (cb publicKeyCallback) auth(session []byte, user string, c packetConn, rand io.Reader) (authResult, []string, error) { // Authentication is performed by sending an enquiry to test if a key is // acceptable to the remote. If the key is acceptable, the client will // attempt to authenticate with the valid key. If not the client will repeat @@ -186,13 +195,13 @@ func (cb publicKeyCallback) auth(session []byte, user string, c packetConn, rand signers, err := cb() if err != nil { - return false, nil, err + return authFailure, nil, err } var methods []string for _, signer := range signers { ok, err := validateKey(signer.PublicKey(), user, c) if err != nil { - return false, nil, err + return authFailure, nil, err } if !ok { continue @@ -206,7 +215,7 @@ func (cb publicKeyCallback) auth(session []byte, user string, c packetConn, rand Method: cb.method(), }, []byte(pub.Type()), pubKey)) if err != nil { - return false, nil, err + return authFailure, nil, err } // manually wrap the serialized signature in a string @@ -224,24 +233,24 @@ func (cb publicKeyCallback) auth(session []byte, user string, c packetConn, rand } p := Marshal(&msg) if err := c.writePacket(p); err != nil { - return false, nil, err + return authFailure, nil, err } - var success bool + var success authResult success, methods, err = handleAuthResponse(c) if err != nil { - return false, nil, err + return authFailure, nil, err } // If authentication succeeds or the list of available methods does not // contain the "publickey" method, do not attempt to authenticate with any // other keys. According to RFC 4252 Section 7, the latter can occur when // additional authentication methods are required. - if success || !containsMethod(methods, cb.method()) { + if success == authSuccess || !containsMethod(methods, cb.method()) { return success, methods, err } } - return false, methods, nil + return authFailure, methods, nil } func containsMethod(methods []string, method string) bool { @@ -283,7 +292,9 @@ func confirmKeyAck(key PublicKey, c packetConn) (bool, error) { } switch packet[0] { case msgUserAuthBanner: - // TODO(gpaul): add callback to present the banner to the user + if err := handleBannerResponse(c, packet); err != nil { + return false, err + } case msgUserAuthPubKeyOk: var msg userAuthPubKeyOkMsg if err := Unmarshal(packet, &msg); err != nil { @@ -316,30 +327,53 @@ func PublicKeysCallback(getSigners func() (signers []Signer, err error)) AuthMet // handleAuthResponse returns whether the preceding authentication request succeeded // along with a list of remaining authentication methods to try next and // an error if an unexpected response was received. -func handleAuthResponse(c packetConn) (bool, []string, error) { +func handleAuthResponse(c packetConn) (authResult, []string, error) { for { packet, err := c.readPacket() if err != nil { - return false, nil, err + return authFailure, nil, err } switch packet[0] { case msgUserAuthBanner: - // TODO: add callback to present the banner to the user + if err := handleBannerResponse(c, packet); err != nil { + return authFailure, nil, err + } case msgUserAuthFailure: var msg userAuthFailureMsg if err := Unmarshal(packet, &msg); err != nil { - return false, nil, err + return authFailure, nil, err } - return false, msg.Methods, nil + if msg.PartialSuccess { + return authPartialSuccess, msg.Methods, nil + } + return authFailure, msg.Methods, nil case msgUserAuthSuccess: - return true, nil, nil + return authSuccess, nil, nil default: - return false, nil, unexpectedMessageError(msgUserAuthSuccess, packet[0]) + return authFailure, nil, unexpectedMessageError(msgUserAuthSuccess, packet[0]) } } } +func handleBannerResponse(c packetConn, packet []byte) error { + var msg userAuthBannerMsg + if err := Unmarshal(packet, &msg); err != nil { + return err + } + + transport, ok := c.(*handshakeTransport) + if !ok { + return nil + } + + if transport.bannerCallback != nil { + return transport.bannerCallback(msg.Message) + } + + return nil +} + // KeyboardInteractiveChallenge should print questions, optionally // disabling echoing (e.g. for passwords), and return all the answers. // Challenge may be called multiple times in a single session. After @@ -349,7 +383,7 @@ func handleAuthResponse(c packetConn) (bool, []string, error) { // both CLI and GUI environments. type KeyboardInteractiveChallenge func(user, instruction string, questions []string, echos []bool) (answers []string, err error) -// KeyboardInteractive returns a AuthMethod using a prompt/response +// KeyboardInteractive returns an AuthMethod using a prompt/response // sequence controlled by the server. func KeyboardInteractive(challenge KeyboardInteractiveChallenge) AuthMethod { return challenge @@ -359,7 +393,7 @@ func (cb KeyboardInteractiveChallenge) method() string { return "keyboard-interactive" } -func (cb KeyboardInteractiveChallenge) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) { +func (cb KeyboardInteractiveChallenge) auth(session []byte, user string, c packetConn, rand io.Reader) (authResult, []string, error) { type initiateMsg struct { User string `sshtype:"50"` Service string @@ -373,37 +407,42 @@ func (cb KeyboardInteractiveChallenge) auth(session []byte, user string, c packe Service: serviceSSH, Method: "keyboard-interactive", })); err != nil { - return false, nil, err + return authFailure, nil, err } for { packet, err := c.readPacket() if err != nil { - return false, nil, err + return authFailure, nil, err } // like handleAuthResponse, but with less options. switch packet[0] { case msgUserAuthBanner: - // TODO: Print banners during userauth. + if err := handleBannerResponse(c, packet); err != nil { + return authFailure, nil, err + } continue case msgUserAuthInfoRequest: // OK case msgUserAuthFailure: var msg userAuthFailureMsg if err := Unmarshal(packet, &msg); err != nil { - return false, nil, err + return authFailure, nil, err } - return false, msg.Methods, nil + if msg.PartialSuccess { + return authPartialSuccess, msg.Methods, nil + } + return authFailure, msg.Methods, nil case msgUserAuthSuccess: - return true, nil, nil + return authSuccess, nil, nil default: - return false, nil, unexpectedMessageError(msgUserAuthInfoRequest, packet[0]) + return authFailure, nil, unexpectedMessageError(msgUserAuthInfoRequest, packet[0]) } var msg userAuthInfoRequestMsg if err := Unmarshal(packet, &msg); err != nil { - return false, nil, err + return authFailure, nil, err } // Manually unpack the prompt/echo pairs. @@ -413,7 +452,7 @@ func (cb KeyboardInteractiveChallenge) auth(session []byte, user string, c packe for i := 0; i < int(msg.NumPrompts); i++ { prompt, r, ok := parseString(rest) if !ok || len(r) == 0 { - return false, nil, errors.New("ssh: prompt format error") + return authFailure, nil, errors.New("ssh: prompt format error") } prompts = append(prompts, string(prompt)) echos = append(echos, r[0] != 0) @@ -421,16 +460,16 @@ func (cb KeyboardInteractiveChallenge) auth(session []byte, user string, c packe } if len(rest) != 0 { - return false, nil, errors.New("ssh: extra data following keyboard-interactive pairs") + return authFailure, nil, errors.New("ssh: extra data following keyboard-interactive pairs") } answers, err := cb(msg.User, msg.Instruction, prompts, echos) if err != nil { - return false, nil, err + return authFailure, nil, err } if len(answers) != len(prompts) { - return false, nil, errors.New("ssh: not enough answers from keyboard-interactive callback") + return authFailure, nil, errors.New("ssh: not enough answers from keyboard-interactive callback") } responseLength := 1 + 4 for _, a := range answers { @@ -446,7 +485,7 @@ func (cb KeyboardInteractiveChallenge) auth(session []byte, user string, c packe } if err := c.writePacket(serialized); err != nil { - return false, nil, err + return authFailure, nil, err } } } @@ -456,10 +495,10 @@ type retryableAuthMethod struct { maxTries int } -func (r *retryableAuthMethod) auth(session []byte, user string, c packetConn, rand io.Reader) (ok bool, methods []string, err error) { +func (r *retryableAuthMethod) auth(session []byte, user string, c packetConn, rand io.Reader) (ok authResult, methods []string, err error) { for i := 0; r.maxTries <= 0 || i < r.maxTries; i++ { ok, methods, err = r.authMethod.auth(session, user, c, rand) - if ok || err != nil { // either success or error terminate + if ok != authFailure || err != nil { // either success, partial success or error terminate return ok, methods, err } } diff --git a/vendor/golang.org/x/crypto/ssh/common.go b/vendor/golang.org/x/crypto/ssh/common.go index dc39e4d2318..04f3620b3d5 100644 --- a/vendor/golang.org/x/crypto/ssh/common.go +++ b/vendor/golang.org/x/crypto/ssh/common.go @@ -24,11 +24,21 @@ const ( serviceSSH = "ssh-connection" ) -// supportedCiphers specifies the supported ciphers in preference order. +// supportedCiphers lists ciphers we support but might not recommend. var supportedCiphers = []string{ "aes128-ctr", "aes192-ctr", "aes256-ctr", "aes128-gcm@openssh.com", - "arcfour256", "arcfour128", + chacha20Poly1305ID, + "arcfour256", "arcfour128", "arcfour", + aes128cbcID, + tripledescbcID, +} + +// preferredCiphers specifies the default preference for ciphers. +var preferredCiphers = []string{ + "aes128-gcm@openssh.com", + chacha20Poly1305ID, + "aes128-ctr", "aes192-ctr", "aes256-ctr", } // supportedKexAlgos specifies the supported key-exchange algorithms in @@ -211,7 +221,7 @@ func (c *Config) SetDefaults() { c.Rand = rand.Reader } if c.Ciphers == nil { - c.Ciphers = supportedCiphers + c.Ciphers = preferredCiphers } var ciphers []string for _, c := range c.Ciphers { @@ -242,7 +252,7 @@ func (c *Config) SetDefaults() { // buildDataSignedForAuth returns the data that is signed in order to prove // possession of a private key. See RFC 4252, section 7. -func buildDataSignedForAuth(sessionId []byte, req userAuthRequestMsg, algo, pubKey []byte) []byte { +func buildDataSignedForAuth(sessionID []byte, req userAuthRequestMsg, algo, pubKey []byte) []byte { data := struct { Session []byte Type byte @@ -253,7 +263,7 @@ func buildDataSignedForAuth(sessionId []byte, req userAuthRequestMsg, algo, pubK Algo []byte PubKey []byte }{ - sessionId, + sessionID, msgUserAuthRequest, req.User, req.Service, diff --git a/vendor/golang.org/x/crypto/ssh/handshake.go b/vendor/golang.org/x/crypto/ssh/handshake.go index 932ce8393ea..4f7912ecd65 100644 --- a/vendor/golang.org/x/crypto/ssh/handshake.go +++ b/vendor/golang.org/x/crypto/ssh/handshake.go @@ -78,6 +78,11 @@ type handshakeTransport struct { dialAddress string remoteAddr net.Addr + // bannerCallback is non-empty if we are the client and it has been set in + // ClientConfig. In that case it is called during the user authentication + // dance to handle a custom server's message. + bannerCallback BannerCallback + // Algorithms agreed in the last key exchange. algorithms *algorithms @@ -120,6 +125,7 @@ func newClientTransport(conn keyingTransport, clientVersion, serverVersion []byt t.dialAddress = dialAddr t.remoteAddr = addr t.hostKeyCallback = config.HostKeyCallback + t.bannerCallback = config.BannerCallback if config.HostKeyAlgorithms != nil { t.hostKeyAlgorithms = config.HostKeyAlgorithms } else { diff --git a/vendor/golang.org/x/crypto/ssh/kex.go b/vendor/golang.org/x/crypto/ssh/kex.go index f91c2770edc..f34bcc01332 100644 --- a/vendor/golang.org/x/crypto/ssh/kex.go +++ b/vendor/golang.org/x/crypto/ssh/kex.go @@ -119,7 +119,7 @@ func (group *dhGroup) Client(c packetConn, randSource io.Reader, magics *handsha return nil, err } - kInt, err := group.diffieHellman(kexDHReply.Y, x) + ki, err := group.diffieHellman(kexDHReply.Y, x) if err != nil { return nil, err } @@ -129,8 +129,8 @@ func (group *dhGroup) Client(c packetConn, randSource io.Reader, magics *handsha writeString(h, kexDHReply.HostKey) writeInt(h, X) writeInt(h, kexDHReply.Y) - K := make([]byte, intLength(kInt)) - marshalInt(K, kInt) + K := make([]byte, intLength(ki)) + marshalInt(K, ki) h.Write(K) return &kexResult{ @@ -164,7 +164,7 @@ func (group *dhGroup) Server(c packetConn, randSource io.Reader, magics *handsha } Y := new(big.Int).Exp(group.g, y, group.p) - kInt, err := group.diffieHellman(kexDHInit.X, y) + ki, err := group.diffieHellman(kexDHInit.X, y) if err != nil { return nil, err } @@ -177,8 +177,8 @@ func (group *dhGroup) Server(c packetConn, randSource io.Reader, magics *handsha writeInt(h, kexDHInit.X) writeInt(h, Y) - K := make([]byte, intLength(kInt)) - marshalInt(K, kInt) + K := make([]byte, intLength(ki)) + marshalInt(K, ki) h.Write(K) H := h.Sum(nil) @@ -462,9 +462,9 @@ func (kex *curve25519sha256) Client(c packetConn, rand io.Reader, magics *handsh writeString(h, kp.pub[:]) writeString(h, reply.EphemeralPubKey) - kInt := new(big.Int).SetBytes(secret[:]) - K := make([]byte, intLength(kInt)) - marshalInt(K, kInt) + ki := new(big.Int).SetBytes(secret[:]) + K := make([]byte, intLength(ki)) + marshalInt(K, ki) h.Write(K) return &kexResult{ @@ -510,9 +510,9 @@ func (kex *curve25519sha256) Server(c packetConn, rand io.Reader, magics *handsh writeString(h, kexInit.ClientPubKey) writeString(h, kp.pub[:]) - kInt := new(big.Int).SetBytes(secret[:]) - K := make([]byte, intLength(kInt)) - marshalInt(K, kInt) + ki := new(big.Int).SetBytes(secret[:]) + K := make([]byte, intLength(ki)) + marshalInt(K, ki) h.Write(K) H := h.Sum(nil) diff --git a/vendor/golang.org/x/crypto/ssh/keys.go b/vendor/golang.org/x/crypto/ssh/keys.go index 7a8756a9330..dadf41ab740 100644 --- a/vendor/golang.org/x/crypto/ssh/keys.go +++ b/vendor/golang.org/x/crypto/ssh/keys.go @@ -363,10 +363,21 @@ func (r *rsaPublicKey) CryptoPublicKey() crypto.PublicKey { type dsaPublicKey dsa.PublicKey -func (r *dsaPublicKey) Type() string { +func (k *dsaPublicKey) Type() string { return "ssh-dss" } +func checkDSAParams(param *dsa.Parameters) error { + // SSH specifies FIPS 186-2, which only provided a single size + // (1024 bits) DSA key. FIPS 186-3 allows for larger key + // sizes, which would confuse SSH. + if l := param.P.BitLen(); l != 1024 { + return fmt.Errorf("ssh: unsupported DSA key size %d", l) + } + + return nil +} + // parseDSA parses an DSA key according to RFC 4253, section 6.6. func parseDSA(in []byte) (out PublicKey, rest []byte, err error) { var w struct { @@ -377,13 +388,18 @@ func parseDSA(in []byte) (out PublicKey, rest []byte, err error) { return nil, nil, err } + param := dsa.Parameters{ + P: w.P, + Q: w.Q, + G: w.G, + } + if err := checkDSAParams(¶m); err != nil { + return nil, nil, err + } + key := &dsaPublicKey{ - Parameters: dsa.Parameters{ - P: w.P, - Q: w.Q, - G: w.G, - }, - Y: w.Y, + Parameters: param, + Y: w.Y, } return key, w.Rest, nil } @@ -465,12 +481,12 @@ func (k *dsaPrivateKey) Sign(rand io.Reader, data []byte) (*Signature, error) { type ecdsaPublicKey ecdsa.PublicKey -func (key *ecdsaPublicKey) Type() string { - return "ecdsa-sha2-" + key.nistID() +func (k *ecdsaPublicKey) Type() string { + return "ecdsa-sha2-" + k.nistID() } -func (key *ecdsaPublicKey) nistID() string { - switch key.Params().BitSize { +func (k *ecdsaPublicKey) nistID() string { + switch k.Params().BitSize { case 256: return "nistp256" case 384: @@ -483,7 +499,7 @@ func (key *ecdsaPublicKey) nistID() string { type ed25519PublicKey ed25519.PublicKey -func (key ed25519PublicKey) Type() string { +func (k ed25519PublicKey) Type() string { return KeyAlgoED25519 } @@ -502,23 +518,23 @@ func parseED25519(in []byte) (out PublicKey, rest []byte, err error) { return (ed25519PublicKey)(key), w.Rest, nil } -func (key ed25519PublicKey) Marshal() []byte { +func (k ed25519PublicKey) Marshal() []byte { w := struct { Name string KeyBytes []byte }{ KeyAlgoED25519, - []byte(key), + []byte(k), } return Marshal(&w) } -func (key ed25519PublicKey) Verify(b []byte, sig *Signature) error { - if sig.Format != key.Type() { - return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, key.Type()) +func (k ed25519PublicKey) Verify(b []byte, sig *Signature) error { + if sig.Format != k.Type() { + return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, k.Type()) } - edKey := (ed25519.PublicKey)(key) + edKey := (ed25519.PublicKey)(k) if ok := ed25519.Verify(edKey, b, sig.Blob); !ok { return errors.New("ssh: signature did not verify") } @@ -579,9 +595,9 @@ func parseECDSA(in []byte) (out PublicKey, rest []byte, err error) { return (*ecdsaPublicKey)(key), w.Rest, nil } -func (key *ecdsaPublicKey) Marshal() []byte { +func (k *ecdsaPublicKey) Marshal() []byte { // See RFC 5656, section 3.1. - keyBytes := elliptic.Marshal(key.Curve, key.X, key.Y) + keyBytes := elliptic.Marshal(k.Curve, k.X, k.Y) // ECDSA publickey struct layout should match the struct used by // parseECDSACert in the x/crypto/ssh/agent package. w := struct { @@ -589,20 +605,20 @@ func (key *ecdsaPublicKey) Marshal() []byte { ID string Key []byte }{ - key.Type(), - key.nistID(), + k.Type(), + k.nistID(), keyBytes, } return Marshal(&w) } -func (key *ecdsaPublicKey) Verify(data []byte, sig *Signature) error { - if sig.Format != key.Type() { - return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, key.Type()) +func (k *ecdsaPublicKey) Verify(data []byte, sig *Signature) error { + if sig.Format != k.Type() { + return fmt.Errorf("ssh: signature type %s for key type %s", sig.Format, k.Type()) } - h := ecHash(key.Curve).New() + h := ecHash(k.Curve).New() h.Write(data) digest := h.Sum(nil) @@ -619,7 +635,7 @@ func (key *ecdsaPublicKey) Verify(data []byte, sig *Signature) error { return err } - if ecdsa.Verify((*ecdsa.PublicKey)(key), digest, ecSig.R, ecSig.S) { + if ecdsa.Verify((*ecdsa.PublicKey)(k), digest, ecSig.R, ecSig.S) { return nil } return errors.New("ssh: signature did not verify") @@ -630,19 +646,28 @@ func (k *ecdsaPublicKey) CryptoPublicKey() crypto.PublicKey { } // NewSignerFromKey takes an *rsa.PrivateKey, *dsa.PrivateKey, -// *ecdsa.PrivateKey or any other crypto.Signer and returns a corresponding -// Signer instance. ECDSA keys must use P-256, P-384 or P-521. +// *ecdsa.PrivateKey or any other crypto.Signer and returns a +// corresponding Signer instance. ECDSA keys must use P-256, P-384 or +// P-521. DSA keys must use parameter size L1024N160. func NewSignerFromKey(key interface{}) (Signer, error) { switch key := key.(type) { case crypto.Signer: return NewSignerFromSigner(key) case *dsa.PrivateKey: - return &dsaPrivateKey{key}, nil + return newDSAPrivateKey(key) default: return nil, fmt.Errorf("ssh: unsupported key type %T", key) } } +func newDSAPrivateKey(key *dsa.PrivateKey) (Signer, error) { + if err := checkDSAParams(&key.PublicKey.Parameters); err != nil { + return nil, err + } + + return &dsaPrivateKey{key}, nil +} + type wrappedSigner struct { signer crypto.Signer pubKey PublicKey @@ -733,7 +758,7 @@ func NewPublicKey(key interface{}) (PublicKey, error) { return (*rsaPublicKey)(key), nil case *ecdsa.PublicKey: if !supportedEllipticCurve(key.Curve) { - return nil, errors.New("ssh: only P-256, P-384 and P-521 EC keys are supported.") + return nil, errors.New("ssh: only P-256, P-384 and P-521 EC keys are supported") } return (*ecdsaPublicKey)(key), nil case *dsa.PublicKey: diff --git a/vendor/golang.org/x/crypto/ssh/messages.go b/vendor/golang.org/x/crypto/ssh/messages.go index e6ecd3afa5a..08d28117305 100644 --- a/vendor/golang.org/x/crypto/ssh/messages.go +++ b/vendor/golang.org/x/crypto/ssh/messages.go @@ -23,10 +23,6 @@ const ( msgUnimplemented = 3 msgDebug = 4 msgNewKeys = 21 - - // Standard authentication messages - msgUserAuthSuccess = 52 - msgUserAuthBanner = 53 ) // SSH messages: @@ -137,6 +133,18 @@ type userAuthFailureMsg struct { PartialSuccess bool } +// See RFC 4252, section 5.1 +const msgUserAuthSuccess = 52 + +// See RFC 4252, section 5.4 +const msgUserAuthBanner = 53 + +type userAuthBannerMsg struct { + Message string `sshtype:"53"` + // unused, but required to allow message parsing + Language string +} + // See RFC 4256, section 3.2 const msgUserAuthInfoRequest = 60 const msgUserAuthInfoResponse = 61 @@ -154,7 +162,7 @@ const msgChannelOpen = 90 type channelOpenMsg struct { ChanType string `sshtype:"90"` - PeersId uint32 + PeersID uint32 PeersWindow uint32 MaxPacketSize uint32 TypeSpecificData []byte `ssh:"rest"` @@ -165,7 +173,7 @@ const msgChannelData = 94 // Used for debug print outs of packets. type channelDataMsg struct { - PeersId uint32 `sshtype:"94"` + PeersID uint32 `sshtype:"94"` Length uint32 Rest []byte `ssh:"rest"` } @@ -174,8 +182,8 @@ type channelDataMsg struct { const msgChannelOpenConfirm = 91 type channelOpenConfirmMsg struct { - PeersId uint32 `sshtype:"91"` - MyId uint32 + PeersID uint32 `sshtype:"91"` + MyID uint32 MyWindow uint32 MaxPacketSize uint32 TypeSpecificData []byte `ssh:"rest"` @@ -185,7 +193,7 @@ type channelOpenConfirmMsg struct { const msgChannelOpenFailure = 92 type channelOpenFailureMsg struct { - PeersId uint32 `sshtype:"92"` + PeersID uint32 `sshtype:"92"` Reason RejectionReason Message string Language string @@ -194,7 +202,7 @@ type channelOpenFailureMsg struct { const msgChannelRequest = 98 type channelRequestMsg struct { - PeersId uint32 `sshtype:"98"` + PeersID uint32 `sshtype:"98"` Request string WantReply bool RequestSpecificData []byte `ssh:"rest"` @@ -204,28 +212,28 @@ type channelRequestMsg struct { const msgChannelSuccess = 99 type channelRequestSuccessMsg struct { - PeersId uint32 `sshtype:"99"` + PeersID uint32 `sshtype:"99"` } // See RFC 4254, section 5.4. const msgChannelFailure = 100 type channelRequestFailureMsg struct { - PeersId uint32 `sshtype:"100"` + PeersID uint32 `sshtype:"100"` } // See RFC 4254, section 5.3 const msgChannelClose = 97 type channelCloseMsg struct { - PeersId uint32 `sshtype:"97"` + PeersID uint32 `sshtype:"97"` } // See RFC 4254, section 5.3 const msgChannelEOF = 96 type channelEOFMsg struct { - PeersId uint32 `sshtype:"96"` + PeersID uint32 `sshtype:"96"` } // See RFC 4254, section 4 @@ -255,7 +263,7 @@ type globalRequestFailureMsg struct { const msgChannelWindowAdjust = 93 type windowAdjustMsg struct { - PeersId uint32 `sshtype:"93"` + PeersID uint32 `sshtype:"93"` AdditionalBytes uint32 } diff --git a/vendor/golang.org/x/crypto/ssh/mux.go b/vendor/golang.org/x/crypto/ssh/mux.go index 27a527c106b..f19016270e8 100644 --- a/vendor/golang.org/x/crypto/ssh/mux.go +++ b/vendor/golang.org/x/crypto/ssh/mux.go @@ -278,7 +278,7 @@ func (m *mux) handleChannelOpen(packet []byte) error { if msg.MaxPacketSize < minPacketLength || msg.MaxPacketSize > 1<<31 { failMsg := channelOpenFailureMsg{ - PeersId: msg.PeersId, + PeersID: msg.PeersID, Reason: ConnectionFailed, Message: "invalid request", Language: "en_US.UTF-8", @@ -287,7 +287,7 @@ func (m *mux) handleChannelOpen(packet []byte) error { } c := m.newChannel(msg.ChanType, channelInbound, msg.TypeSpecificData) - c.remoteId = msg.PeersId + c.remoteId = msg.PeersID c.maxRemotePayload = msg.MaxPacketSize c.remoteWin.add(msg.PeersWindow) m.incomingChannels <- c @@ -313,7 +313,7 @@ func (m *mux) openChannel(chanType string, extra []byte) (*channel, error) { PeersWindow: ch.myWindow, MaxPacketSize: ch.maxIncomingPayload, TypeSpecificData: extra, - PeersId: ch.localId, + PeersID: ch.localId, } if err := m.sendMessage(open); err != nil { return nil, err diff --git a/vendor/golang.org/x/crypto/ssh/server.go b/vendor/golang.org/x/crypto/ssh/server.go index 8a78b7ca0f1..6262f341654 100644 --- a/vendor/golang.org/x/crypto/ssh/server.go +++ b/vendor/golang.org/x/crypto/ssh/server.go @@ -95,6 +95,10 @@ type ServerConfig struct { // Note that RFC 4253 section 4.2 requires that this string start with // "SSH-2.0-". ServerVersion string + + // BannerCallback, if present, is called and the return string is sent to + // the client after key exchange completed but before authentication. + BannerCallback func(conn ConnMetadata) string } // AddHostKey adds a private key as a host key. If an existing host @@ -252,7 +256,7 @@ func (s *connection) serverHandshake(config *ServerConfig) (*Permissions, error) func isAcceptableAlgo(algo string) bool { switch algo { case KeyAlgoRSA, KeyAlgoDSA, KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521, KeyAlgoED25519, - CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01, CertAlgoECDSA384v01, CertAlgoECDSA521v01: + CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01, CertAlgoECDSA384v01, CertAlgoECDSA521v01, CertAlgoED25519v01: return true } return false @@ -293,7 +297,7 @@ func checkSourceAddress(addr net.Addr, sourceAddrs string) error { // provided by the user failed to authenticate. type ServerAuthError struct { // Errors contains authentication errors returned by the authentication - // callback methods. + // callback methods. The first entry typically is NoAuthError. Errors []error } @@ -305,6 +309,12 @@ func (l ServerAuthError) Error() string { return "[" + strings.Join(errs, ", ") + "]" } +// NoAuthError is the unique error that is returned if no +// authentication method has been passed yet. This happens as a normal +// part of the authentication loop, since the client first tries +// 'none' authentication to discover available methods. +var NoAuthError = errors.New("ssh: no auth passed yet") + func (s *connection) serverAuthenticate(config *ServerConfig) (*Permissions, error) { sessionID := s.transport.getSessionID() var cache pubKeyCache @@ -312,6 +322,7 @@ func (s *connection) serverAuthenticate(config *ServerConfig) (*Permissions, err authFailures := 0 var authErrs []error + var displayedBanner bool userAuthLoop: for { @@ -343,8 +354,22 @@ userAuthLoop: } s.user = userAuthReq.User + + if !displayedBanner && config.BannerCallback != nil { + displayedBanner = true + msg := config.BannerCallback(s) + if msg != "" { + bannerMsg := &userAuthBannerMsg{ + Message: msg, + } + if err := s.transport.writePacket(Marshal(bannerMsg)); err != nil { + return nil, err + } + } + } + perms = nil - authErr := errors.New("no auth passed yet") + authErr := NoAuthError switch userAuthReq.Method { case "none": diff --git a/vendor/golang.org/x/crypto/ssh/session.go b/vendor/golang.org/x/crypto/ssh/session.go index cc06e03f5c1..d3321f6b784 100644 --- a/vendor/golang.org/x/crypto/ssh/session.go +++ b/vendor/golang.org/x/crypto/ssh/session.go @@ -406,7 +406,7 @@ func (s *Session) Wait() error { s.stdinPipeWriter.Close() } var copyError error - for _ = range s.copyFuncs { + for range s.copyFuncs { if err := <-s.errors; err != nil && copyError == nil { copyError = err } diff --git a/vendor/golang.org/x/crypto/ssh/terminal/terminal.go b/vendor/golang.org/x/crypto/ssh/terminal/terminal.go index 18379a935bf..9a887598ff4 100644 --- a/vendor/golang.org/x/crypto/ssh/terminal/terminal.go +++ b/vendor/golang.org/x/crypto/ssh/terminal/terminal.go @@ -617,7 +617,7 @@ func writeWithCRLF(w io.Writer, buf []byte) (n int, err error) { if _, err = w.Write(crlf); err != nil { return n, err } - n += 1 + n++ buf = buf[1:] } } diff --git a/vendor/golang.org/x/crypto/ssh/terminal/util.go b/vendor/golang.org/x/crypto/ssh/terminal/util.go index a37e47a2140..199b27af09f 100644 --- a/vendor/golang.org/x/crypto/ssh/terminal/util.go +++ b/vendor/golang.org/x/crypto/ssh/terminal/util.go @@ -17,44 +17,41 @@ package terminal import ( - "syscall" - "unsafe" - "golang.org/x/sys/unix" ) // State contains the state of a terminal. type State struct { - termios syscall.Termios + termios unix.Termios } // IsTerminal returns true if the given file descriptor is a terminal. func IsTerminal(fd int) bool { - var termios syscall.Termios - _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0) - return err == 0 + _, err := unix.IoctlGetTermios(fd, ioctlReadTermios) + return err == nil } // MakeRaw put the terminal connected to the given file descriptor into raw // mode and returns the previous state of the terminal so that it can be // restored. func MakeRaw(fd int) (*State, error) { - var oldState State - if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 { + termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios) + if err != nil { return nil, err } - newState := oldState.termios + oldState := State{termios: *termios} + // This attempts to replicate the behaviour documented for cfmakeraw in // the termios(3) manpage. - newState.Iflag &^= syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON - newState.Oflag &^= syscall.OPOST - newState.Lflag &^= syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN - newState.Cflag &^= syscall.CSIZE | syscall.PARENB - newState.Cflag |= syscall.CS8 - newState.Cc[unix.VMIN] = 1 - newState.Cc[unix.VTIME] = 0 - if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 { + termios.Iflag &^= unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON + termios.Oflag &^= unix.OPOST + termios.Lflag &^= unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN + termios.Cflag &^= unix.CSIZE | unix.PARENB + termios.Cflag |= unix.CS8 + termios.Cc[unix.VMIN] = 1 + termios.Cc[unix.VTIME] = 0 + if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, termios); err != nil { return nil, err } @@ -64,59 +61,55 @@ func MakeRaw(fd int) (*State, error) { // GetState returns the current state of a terminal which may be useful to // restore the terminal after a signal. func GetState(fd int) (*State, error) { - var oldState State - if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 { + termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios) + if err != nil { return nil, err } - return &oldState, nil + return &State{termios: *termios}, nil } // Restore restores the terminal connected to the given file descriptor to a // previous state. func Restore(fd int, state *State) error { - if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&state.termios)), 0, 0, 0); err != 0 { - return err - } - return nil + return unix.IoctlSetTermios(fd, ioctlWriteTermios, &state.termios) } // GetSize returns the dimensions of the given terminal. func GetSize(fd int) (width, height int, err error) { - var dimensions [4]uint16 - - if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&dimensions)), 0, 0, 0); err != 0 { + ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ) + if err != nil { return -1, -1, err } - return int(dimensions[1]), int(dimensions[0]), nil + return int(ws.Col), int(ws.Row), nil } // passwordReader is an io.Reader that reads from a specific file descriptor. type passwordReader int func (r passwordReader) Read(buf []byte) (int, error) { - return syscall.Read(int(r), buf) + return unix.Read(int(r), buf) } // ReadPassword reads a line of input from a terminal without local echo. This // is commonly used for inputting passwords and other sensitive data. The slice // returned does not include the \n. func ReadPassword(fd int) ([]byte, error) { - var oldState syscall.Termios - if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState)), 0, 0, 0); err != 0 { + termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios) + if err != nil { return nil, err } - newState := oldState - newState.Lflag &^= syscall.ECHO - newState.Lflag |= syscall.ICANON | syscall.ISIG - newState.Iflag |= syscall.ICRNL - if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 { + newState := *termios + newState.Lflag &^= unix.ECHO + newState.Lflag |= unix.ICANON | unix.ISIG + newState.Iflag |= unix.ICRNL + if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, &newState); err != nil { return nil, err } defer func() { - syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&oldState)), 0, 0, 0) + unix.IoctlSetTermios(fd, ioctlWriteTermios, termios) }() return readPasswordLine(passwordReader(fd)) diff --git a/vendor/golang.org/x/crypto/ssh/terminal/util_windows.go b/vendor/golang.org/x/crypto/ssh/terminal/util_windows.go index 60979ccd005..4933ac36118 100644 --- a/vendor/golang.org/x/crypto/ssh/terminal/util_windows.go +++ b/vendor/golang.org/x/crypto/ssh/terminal/util_windows.go @@ -17,6 +17,8 @@ package terminal import ( + "os" + "golang.org/x/sys/windows" ) @@ -71,13 +73,6 @@ func GetSize(fd int) (width, height int, err error) { return int(info.Size.X), int(info.Size.Y), nil } -// passwordReader is an io.Reader that reads from a specific Windows HANDLE. -type passwordReader int - -func (r passwordReader) Read(buf []byte) (int, error) { - return windows.Read(windows.Handle(r), buf) -} - // ReadPassword reads a line of input from a terminal without local echo. This // is commonly used for inputting passwords and other sensitive data. The slice // returned does not include the \n. @@ -98,5 +93,13 @@ func ReadPassword(fd int) ([]byte, error) { windows.SetConsoleMode(windows.Handle(fd), old) }() - return readPasswordLine(passwordReader(fd)) + var h windows.Handle + p, _ := windows.GetCurrentProcess() + if err := windows.DuplicateHandle(p, windows.Handle(fd), p, &h, 0, false, windows.DUPLICATE_SAME_ACCESS); err != nil { + return nil, err + } + + f := os.NewFile(uintptr(h), "stdin") + defer f.Close() + return readPasswordLine(f) } diff --git a/vendor/golang.org/x/crypto/ssh/transport.go b/vendor/golang.org/x/crypto/ssh/transport.go index f9780e0ae70..f6fae1db460 100644 --- a/vendor/golang.org/x/crypto/ssh/transport.go +++ b/vendor/golang.org/x/crypto/ssh/transport.go @@ -6,6 +6,7 @@ package ssh import ( "bufio" + "bytes" "errors" "io" "log" @@ -76,17 +77,17 @@ type connectionState struct { // both directions are triggered by reading and writing a msgNewKey packet // respectively. func (t *transport) prepareKeyChange(algs *algorithms, kexResult *kexResult) error { - if ciph, err := newPacketCipher(t.reader.dir, algs.r, kexResult); err != nil { + ciph, err := newPacketCipher(t.reader.dir, algs.r, kexResult) + if err != nil { return err - } else { - t.reader.pendingKeyChange <- ciph } + t.reader.pendingKeyChange <- ciph - if ciph, err := newPacketCipher(t.writer.dir, algs.w, kexResult); err != nil { + ciph, err = newPacketCipher(t.writer.dir, algs.w, kexResult) + if err != nil { return err - } else { - t.writer.pendingKeyChange <- ciph } + t.writer.pendingKeyChange <- ciph return nil } @@ -139,7 +140,7 @@ func (s *connectionState) readPacket(r *bufio.Reader) ([]byte, error) { case cipher := <-s.pendingKeyChange: s.packetCipher = cipher default: - return nil, errors.New("ssh: got bogus newkeys message.") + return nil, errors.New("ssh: got bogus newkeys message") } case msgDisconnect: @@ -232,52 +233,22 @@ var ( clientKeys = direction{[]byte{'A'}, []byte{'C'}, []byte{'E'}} ) -// generateKeys generates key material for IV, MAC and encryption. -func generateKeys(d direction, algs directionAlgorithms, kex *kexResult) (iv, key, macKey []byte) { - cipherMode := cipherModes[algs.Cipher] - macMode := macModes[algs.MAC] - - iv = make([]byte, cipherMode.ivSize) - key = make([]byte, cipherMode.keySize) - macKey = make([]byte, macMode.keySize) - - generateKeyMaterial(iv, d.ivTag, kex) - generateKeyMaterial(key, d.keyTag, kex) - generateKeyMaterial(macKey, d.macKeyTag, kex) - return -} - // setupKeys sets the cipher and MAC keys from kex.K, kex.H and sessionId, as // described in RFC 4253, section 6.4. direction should either be serverKeys // (to setup server->client keys) or clientKeys (for client->server keys). func newPacketCipher(d direction, algs directionAlgorithms, kex *kexResult) (packetCipher, error) { - iv, key, macKey := generateKeys(d, algs, kex) + cipherMode := cipherModes[algs.Cipher] + macMode := macModes[algs.MAC] - if algs.Cipher == gcmCipherID { - return newGCMCipher(iv, key, macKey) - } + iv := make([]byte, cipherMode.ivSize) + key := make([]byte, cipherMode.keySize) + macKey := make([]byte, macMode.keySize) - if algs.Cipher == aes128cbcID { - return newAESCBCCipher(iv, key, macKey, algs) - } + generateKeyMaterial(iv, d.ivTag, kex) + generateKeyMaterial(key, d.keyTag, kex) + generateKeyMaterial(macKey, d.macKeyTag, kex) - if algs.Cipher == tripledescbcID { - return newTripleDESCBCCipher(iv, key, macKey, algs) - } - - c := &streamPacketCipher{ - mac: macModes[algs.MAC].new(macKey), - etm: macModes[algs.MAC].etm, - } - c.macResult = make([]byte, c.mac.Size()) - - var err error - c.cipher, err = cipherModes[algs.Cipher].createStream(key, iv) - if err != nil { - return nil, err - } - - return c, nil + return cipherModes[algs.Cipher].create(key, iv, macKey, algs) } // generateKeyMaterial fills out with key material generated from tag, K, H @@ -342,7 +313,7 @@ func readVersion(r io.Reader) ([]byte, error) { var ok bool var buf [1]byte - for len(versionString) < maxVersionStringBytes { + for length := 0; length < maxVersionStringBytes; length++ { _, err := io.ReadFull(r, buf[:]) if err != nil { return nil, err @@ -350,6 +321,13 @@ func readVersion(r io.Reader) ([]byte, error) { // The RFC says that the version should be terminated with \r\n // but several SSH servers actually only send a \n. if buf[0] == '\n' { + if !bytes.HasPrefix(versionString, []byte("SSH-")) { + // RFC 4253 says we need to ignore all version string lines + // except the one containing the SSH version (provided that + // all the lines do not exceed 255 bytes in total). + versionString = versionString[:0] + continue + } ok = true break }