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add front proxy authenticator
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f34bb50ce7
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557e653785
@ -0,0 +1,95 @@
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/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package headerrequest
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import (
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"crypto/x509"
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"fmt"
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"io/ioutil"
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"net/http"
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"strings"
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"k8s.io/kubernetes/pkg/auth/authenticator"
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"k8s.io/kubernetes/pkg/auth/user"
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utilcert "k8s.io/kubernetes/pkg/util/cert"
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"k8s.io/kubernetes/pkg/util/sets"
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x509request "k8s.io/kubernetes/plugin/pkg/auth/authenticator/request/x509"
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)
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type requestHeaderAuthRequestHandler struct {
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nameHeaders []string
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}
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func New(nameHeaders []string) (authenticator.Request, error) {
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headers := []string{}
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for _, headerName := range nameHeaders {
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trimmedHeader := strings.TrimSpace(headerName)
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if len(trimmedHeader) == 0 {
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return nil, fmt.Errorf("empty header %q", headerName)
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}
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headers = append(headers, trimmedHeader)
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}
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return &requestHeaderAuthRequestHandler{nameHeaders: headers}, nil
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}
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func NewSecure(clientCA string, proxyClientNames []string, nameHeaders []string) (authenticator.Request, error) {
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headerAuthenticator, err := New(nameHeaders)
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if err != nil {
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return nil, err
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}
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if len(clientCA) == 0 {
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return nil, fmt.Errorf("missing clientCA file")
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}
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// Wrap with an x509 verifier
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caData, err := ioutil.ReadFile(clientCA)
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if err != nil {
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return nil, fmt.Errorf("error reading %s: %v", clientCA, err)
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}
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opts := x509request.DefaultVerifyOptions()
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opts.Roots = x509.NewCertPool()
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certs, err := utilcert.ParseCertsPEM(caData)
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if err != nil {
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return nil, fmt.Errorf("error loading certs from %s: %v", clientCA, err)
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}
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for _, cert := range certs {
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opts.Roots.AddCert(cert)
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}
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return x509request.NewVerifier(opts, headerAuthenticator, sets.NewString(proxyClientNames...)), nil
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}
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func (a *requestHeaderAuthRequestHandler) AuthenticateRequest(req *http.Request) (user.Info, bool, error) {
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name := headerValue(req.Header, a.nameHeaders)
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if len(name) == 0 {
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return nil, false, nil
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}
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return &user.DefaultInfo{Name: name}, true, nil
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}
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func headerValue(h http.Header, headerNames []string) string {
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for _, headerName := range headerNames {
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headerValue := h.Get(headerName)
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if len(headerValue) > 0 {
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return headerValue
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}
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}
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return ""
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}
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@ -0,0 +1,89 @@
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/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package headerrequest
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import (
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"net/http"
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"reflect"
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"testing"
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"k8s.io/kubernetes/pkg/auth/user"
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)
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func TestRequestHeader(t *testing.T) {
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testcases := map[string]struct {
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nameHeaders []string
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requestHeaders http.Header
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expectedUser user.Info
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expectedOk bool
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}{
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"empty": {},
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"no match": {
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nameHeaders: []string{"X-Remote-User"},
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},
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"match": {
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nameHeaders: []string{"X-Remote-User"},
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requestHeaders: http.Header{"X-Remote-User": {"Bob"}},
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expectedUser: &user.DefaultInfo{Name: "Bob"},
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expectedOk: true,
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},
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"exact match": {
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nameHeaders: []string{"X-Remote-User"},
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requestHeaders: http.Header{
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"Prefixed-X-Remote-User-With-Suffix": {"Bob"},
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"X-Remote-User-With-Suffix": {"Bob"},
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},
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},
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"first match": {
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nameHeaders: []string{
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"X-Remote-User",
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"A-Second-X-Remote-User",
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"Another-X-Remote-User",
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},
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requestHeaders: http.Header{
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"X-Remote-User": {"", "First header, second value"},
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"A-Second-X-Remote-User": {"Second header, first value", "Second header, second value"},
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"Another-X-Remote-User": {"Third header, first value"}},
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expectedUser: &user.DefaultInfo{Name: "Second header, first value"},
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expectedOk: true,
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},
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"case-insensitive": {
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nameHeaders: []string{"x-REMOTE-user"}, // configured headers can be case-insensitive
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requestHeaders: http.Header{"X-Remote-User": {"Bob"}}, // the parsed headers are normalized by the http package
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expectedUser: &user.DefaultInfo{Name: "Bob"},
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expectedOk: true,
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},
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}
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for k, testcase := range testcases {
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auth, err := New(testcase.nameHeaders)
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if err != nil {
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t.Fatal(err)
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}
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req := &http.Request{Header: testcase.requestHeaders}
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user, ok, _ := auth.AuthenticateRequest(req)
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if testcase.expectedOk != ok {
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t.Errorf("%v: expected %v, got %v", k, testcase.expectedOk, ok)
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}
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if e, a := testcase.expectedUser, user; !reflect.DeepEqual(e, a) {
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t.Errorf("%v: expected %#v, got %#v", k, e, a)
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}
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}
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}
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@ -839,6 +839,7 @@ k8s.io/kubernetes/plugin/pkg/auth/authenticator/password/allow,liggitt,0
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k8s.io/kubernetes/plugin/pkg/auth/authenticator/password/passwordfile,liggitt,0
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k8s.io/kubernetes/plugin/pkg/auth/authenticator/request/anonymous,ixdy,1
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k8s.io/kubernetes/plugin/pkg/auth/authenticator/request/basicauth,liggitt,0
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k8s.io/kubernetes/plugin/pkg/auth/authenticator/request/headerrequest,deads2k,0
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k8s.io/kubernetes/plugin/pkg/auth/authenticator/request/union,liggitt,0
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k8s.io/kubernetes/plugin/pkg/auth/authenticator/request/x509,liggitt,0
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k8s.io/kubernetes/plugin/pkg/auth/authenticator/token/anytoken,timstclair,1
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