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8 Commits

Author SHA1 Message Date
Antonio Murdaca
2e8377a708 version: bump to v0.1.26
Signed-off-by: Antonio Murdaca <runcom@redhat.com>
2017-11-15 14:48:39 +01:00
Daniel J Walsh
a76cfb7dc7 Merge pull request #450 from umohnani8/dir_transport
Add manifest type conversion to skopeo copy
2017-11-15 08:32:05 -05:00
Urvashi Mohnani
409dce8a89 Add manifest type conversion to skopeo with dir transport
User can select from 3 manifest types: oci, v2s1, or v2s2
skopeo copy defaults to oci manifest if the --format flag is not set
Adds option to compress blobs when saving to the directory using the dir transport
e.g skopeo copy --format v2s1 --compress-blobs docker-archive:alp.tar dir:my-directory

Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
2017-11-14 14:45:32 -05:00
Urvashi Mohnani
5b14746045 Vendor in changes from containers/image
Adds manifest type conversion to dir transport

Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
2017-11-14 14:45:32 -05:00
Antonio Murdaca
a3d2e8323a Merge pull request #409 from runcom/add-logo
[do not merge yet] add logo :)
2017-11-14 20:10:20 +01:00
Antonio Murdaca
2be4deb980 README.md: add logo
Signed-off-by: Antonio Murdaca <runcom@redhat.com>
2017-11-14 20:09:19 +01:00
Antonio Murdaca
5f71547262 Merge pull request #451 from runcom/cve-error-log
Fix CVE in tar-split
2017-11-08 16:26:21 +01:00
Antonio Murdaca
6c791a0559 bump back to v0.1.26-dev
Signed-off-by: Antonio Murdaca <runcom@redhat.com>
2017-11-08 15:59:21 +01:00
15 changed files with 761 additions and 32 deletions

View File

@@ -1,6 +1,10 @@
skopeo [![Build Status](https://travis-ci.org/projectatomic/skopeo.svg?branch=master)](https://travis-ci.org/projectatomic/skopeo)
=
<img src="https://cdn.rawgit.com/projectatomic/skopeo/master/docs/skopeo.svg" width="250">
----
`skopeo` is a command line utility that performs various operations on container images and image repositories. Skopeo works with API V2 registries such as Docker registries, the Atomic registry, private registries, local directories and local OCI-layout directories. Skopeo does not require a daemon to be running to perform these operations which consist of:
* Inspecting an image showing its properties including its layers.

View File

@@ -7,9 +7,11 @@ import (
"strings"
"github.com/containers/image/copy"
"github.com/containers/image/manifest"
"github.com/containers/image/transports"
"github.com/containers/image/transports/alltransports"
"github.com/containers/image/types"
imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/urfave/cli"
)
@@ -55,12 +57,27 @@ func copyHandler(context *cli.Context) error {
return err
}
var manifestType string
if context.IsSet("format") {
switch context.String("format") {
case "oci":
manifestType = imgspecv1.MediaTypeImageManifest
case "v2s1":
manifestType = manifest.DockerV2Schema1SignedMediaType
case "v2s2":
manifestType = manifest.DockerV2Schema2MediaType
default:
return fmt.Errorf("unknown format %q. Choose on of the supported formats: 'oci', 'v2s1', or 'v2s2'", context.String("format"))
}
}
return copy.Image(policyContext, destRef, srcRef, &copy.Options{
RemoveSignatures: removeSignatures,
SignBy: signBy,
ReportWriter: os.Stdout,
SourceCtx: sourceCtx,
DestinationCtx: destinationCtx,
RemoveSignatures: removeSignatures,
SignBy: signBy,
ReportWriter: os.Stdout,
SourceCtx: sourceCtx,
DestinationCtx: destinationCtx,
ForceManifestMIMEType: manifestType,
})
}
@@ -131,5 +148,13 @@ var copyCmd = cli.Command{
Value: "",
Usage: "`DIRECTORY` to use to store retrieved blobs (OCI layout destinations only)",
},
cli.StringFlag{
Name: "format, f",
Usage: "`MANIFEST TYPE` (oci, v2s1, or v2s2) to use when saving image to directory using the 'dir:' transport (default is manifest type of source)",
},
cli.BoolFlag{
Name: "dest-compress",
Usage: "Compress tarball image layers when saving to directory using the 'dir' transport. (default is same compression type as source)",
},
},
}

View File

@@ -18,6 +18,7 @@ func contextFromGlobalOptions(c *cli.Context, flagPrefix string) (*types.SystemC
DockerInsecureSkipTLSVerify: !c.GlobalBoolT("tls-verify"),
OSTreeTmpDirPath: c.String(flagPrefix + "ostree-tmp-dir"),
OCISharedBlobDirPath: c.String(flagPrefix + "shared-blob-dir"),
DirForceCompress: c.Bool(flagPrefix + "compress"),
}
if c.IsSet(flagPrefix + "tls-verify") {
ctx.DockerInsecureSkipTLSVerify = !c.BoolT(flagPrefix + "tls-verify")

View File

@@ -20,20 +20,24 @@ _complete_() {
}
_skopeo_copy() {
local options_with_args="
--sign-by
--src-creds --screds
--src-cert-dir
--src-tls-verify
--dest-creds --dcreds
--dest-cert-dir
--dest-ostree-tmp-dir
--dest-tls-verify
"
local boolean_options="
--remove-signatures
"
_complete_ "$options_with_args" "$boolean_options"
local options_with_args="
--format -f
--sign-by
--src-creds --screds
--src-cert-dir
--src-tls-verify
--dest-creds --dcreds
--dest-cert-dir
--dest-ostree-tmp-dir
--dest-tls-verify
"
local boolean_options="
--dest-compress
--remove-signatures
"
_complete_ "$options_with_args" "$boolean_options"
}
_skopeo_inspect() {

View File

@@ -60,12 +60,16 @@ Uses the system's trust policy to validate images, rejects images not trusted by
_destination-image_ use the "image name" format described above
**--format, -f** _manifest-type_ Manifest type (oci, v2s1, or v2s2) to use when saving image to directory using the 'dir:' transport (default is manifest type of source)
**--remove-signatures** do not copy signatures, if any, from _source-image_. Necessary when copying a signed image to a destination which does not support signatures.
**--sign-by=**_key-id_ add a signature using that key ID for an image name corresponding to _destination-image_
**--src-creds** _username[:password]_ for accessing the source registry
**--dest-compress** _bool-value_ Compress tarball image layers when saving to directory using the 'dir' transport. (default is same compression type as source)
**--dest-creds** _username[:password]_ for accessing the destination registry
**--src-cert-dir** _path_ Use certificates at _path_ (*.crt, *.cert, *.key) to connect to the source registry

546
docs/skopeo.svg Normal file
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After

Width:  |  Height:  |  Size: 24 KiB

View File

@@ -15,6 +15,7 @@ import (
"github.com/containers/image/signature"
"github.com/go-check/check"
"github.com/opencontainers/go-digest"
imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/opencontainers/image-tools/image"
)
@@ -591,6 +592,32 @@ func (s *CopySuite) TestCopySchemaConversion(c *check.C) {
s.testCopySchemaConversionRegistries(c, "docker://"+v2s1DockerRegistryURL+"/schema1", "docker://"+v2DockerRegistryURL+"/schema2")
}
func (s *CopySuite) TestCopyManifestConversion(c *check.C) {
topDir, err := ioutil.TempDir("", "manifest-conversion")
c.Assert(err, check.IsNil)
defer os.RemoveAll(topDir)
srcDir := filepath.Join(topDir, "source")
destDir1 := filepath.Join(topDir, "dest1")
destDir2 := filepath.Join(topDir, "dest2")
// oci to v2s1 and vice-versa not supported yet
// get v2s2 manifest type
assertSkopeoSucceeds(c, "", "copy", "docker://busybox", "dir:"+srcDir)
verifyManifestMIMEType(c, srcDir, manifest.DockerV2Schema2MediaType)
// convert from v2s2 to oci
assertSkopeoSucceeds(c, "", "copy", "--format=oci", "dir:"+srcDir, "dir:"+destDir1)
verifyManifestMIMEType(c, destDir1, imgspecv1.MediaTypeImageManifest)
// convert from oci to v2s2
assertSkopeoSucceeds(c, "", "copy", "--format=v2s2", "dir:"+destDir1, "dir:"+destDir2)
verifyManifestMIMEType(c, destDir2, manifest.DockerV2Schema2MediaType)
// convert from v2s2 to v2s1
assertSkopeoSucceeds(c, "", "copy", "--format=v2s1", "dir:"+srcDir, "dir:"+destDir1)
verifyManifestMIMEType(c, destDir1, manifest.DockerV2Schema1SignedMediaType)
// convert from v2s1 to v2s2
assertSkopeoSucceeds(c, "", "copy", "--format=v2s2", "dir:"+destDir1, "dir:"+destDir2)
verifyManifestMIMEType(c, destDir2, manifest.DockerV2Schema2MediaType)
}
func (s *CopySuite) testCopySchemaConversionRegistries(c *check.C, schema1Registry, schema2Registry string) {
topDir, err := ioutil.TempDir("", "schema-conversion")
c.Assert(err, check.IsNil)

View File

@@ -1,5 +1,5 @@
github.com/urfave/cli v1.17.0
github.com/containers/image master
github.com/containers/image f950aa3529148eb0dea90888c24b6682da641b13
github.com/opencontainers/go-digest master
gopkg.in/cheggaaa/pb.v1 ad4efe000aa550bb54918c06ebbadc0ff17687b9 https://github.com/cheggaaa/pb
github.com/containers/storage master

View File

@@ -12,8 +12,6 @@ import (
"strings"
"time"
pb "gopkg.in/cheggaaa/pb.v1"
"github.com/containers/image/image"
"github.com/containers/image/pkg/compression"
"github.com/containers/image/signature"
@@ -22,6 +20,7 @@ import (
"github.com/opencontainers/go-digest"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
pb "gopkg.in/cheggaaa/pb.v1"
)
type digestingReader struct {
@@ -95,6 +94,8 @@ type Options struct {
DestinationCtx *types.SystemContext
ProgressInterval time.Duration // time to wait between reports to signal the progress channel
Progress chan types.ProgressProperties // Reported to when ProgressInterval has arrived for a single artifact+offset.
// manifest MIME type of image set by user. "" is default and means use the autodetection to the the manifest MIME type
ForceManifestMIMEType string
}
// Image copies image from srcRef to destRef, using policyContext to validate
@@ -193,7 +194,7 @@ func Image(policyContext *signature.PolicyContext, destRef, srcRef types.ImageRe
// We compute preferredManifestMIMEType only to show it in error messages.
// Without having to add this context in an error message, we would be happy enough to know only that no conversion is needed.
preferredManifestMIMEType, otherManifestMIMETypeCandidates, err := determineManifestConversion(&manifestUpdates, src, dest.SupportedManifestMIMETypes(), canModifyManifest)
preferredManifestMIMEType, otherManifestMIMETypeCandidates, err := determineManifestConversion(&manifestUpdates, src, dest.SupportedManifestMIMETypes(), canModifyManifest, options.ForceManifestMIMEType)
if err != nil {
return err
}

View File

@@ -41,12 +41,16 @@ func (os *orderedSet) append(s string) {
// Note that the conversion will only happen later, through src.UpdatedImage
// Returns the preferred manifest MIME type (whether we are converting to it or using it unmodified),
// and a list of other possible alternatives, in order.
func determineManifestConversion(manifestUpdates *types.ManifestUpdateOptions, src types.Image, destSupportedManifestMIMETypes []string, canModifyManifest bool) (string, []string, error) {
func determineManifestConversion(manifestUpdates *types.ManifestUpdateOptions, src types.Image, destSupportedManifestMIMETypes []string, canModifyManifest bool, forceManifestMIMEType string) (string, []string, error) {
_, srcType, err := src.Manifest()
if err != nil { // This should have been cached?!
return "", nil, errors.Wrap(err, "Error reading manifest")
}
if forceManifestMIMEType != "" {
destSupportedManifestMIMETypes = []string{forceManifestMIMEType}
}
if len(destSupportedManifestMIMETypes) == 0 {
return srcType, []string{}, nil // Anything goes; just use the original as is, do not try any conversions.
}

View File

@@ -4,19 +4,77 @@ import (
"io"
"io/ioutil"
"os"
"path/filepath"
"github.com/containers/image/types"
"github.com/opencontainers/go-digest"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
const version = "Directory Transport Version: 1.0\n"
// ErrNotContainerImageDir indicates that the directory doesn't match the expected contents of a directory created
// using the 'dir' transport
var ErrNotContainerImageDir = errors.New("not a containers image directory, don't want to overwrite important data")
type dirImageDestination struct {
ref dirReference
ref dirReference
compress bool
}
// newImageDestination returns an ImageDestination for writing to an existing directory.
func newImageDestination(ref dirReference) types.ImageDestination {
return &dirImageDestination{ref}
// newImageDestination returns an ImageDestination for writing to a directory.
func newImageDestination(ref dirReference, compress bool) (types.ImageDestination, error) {
d := &dirImageDestination{ref: ref, compress: compress}
// If directory exists check if it is empty
// if not empty, check whether the contents match that of a container image directory and overwrite the contents
// if the contents don't match throw an error
dirExists, err := pathExists(d.ref.resolvedPath)
if err != nil {
return nil, errors.Wrapf(err, "error checking for path %q", d.ref.resolvedPath)
}
if dirExists {
isEmpty, err := isDirEmpty(d.ref.resolvedPath)
if err != nil {
return nil, err
}
if !isEmpty {
versionExists, err := pathExists(d.ref.versionPath())
if err != nil {
return nil, errors.Wrapf(err, "error checking if path exists %q", d.ref.versionPath())
}
if versionExists {
contents, err := ioutil.ReadFile(d.ref.versionPath())
if err != nil {
return nil, err
}
// check if contents of version file is what we expect it to be
if string(contents) != version {
return nil, ErrNotContainerImageDir
}
} else {
return nil, ErrNotContainerImageDir
}
// delete directory contents so that only one image is in the directory at a time
if err = removeDirContents(d.ref.resolvedPath); err != nil {
return nil, errors.Wrapf(err, "error erasing contents in %q", d.ref.resolvedPath)
}
logrus.Debugf("overwriting existing container image directory %q", d.ref.resolvedPath)
}
} else {
// create directory if it doesn't exist
if err := os.MkdirAll(d.ref.resolvedPath, 0755); err != nil {
return nil, errors.Wrapf(err, "unable to create directory %q", d.ref.resolvedPath)
}
}
// create version file
err = ioutil.WriteFile(d.ref.versionPath(), []byte(version), 0755)
if err != nil {
return nil, errors.Wrapf(err, "error creating version file %q", d.ref.versionPath())
}
return d, nil
}
// Reference returns the reference used to set up this destination. Note that this should directly correspond to user's intent,
@@ -42,7 +100,7 @@ func (d *dirImageDestination) SupportsSignatures() error {
// ShouldCompressLayers returns true iff it is desirable to compress layer blobs written to this destination.
func (d *dirImageDestination) ShouldCompressLayers() bool {
return false
return d.compress
}
// AcceptsForeignLayerURLs returns false iff foreign layers in manifest should be actually
@@ -147,3 +205,39 @@ func (d *dirImageDestination) PutSignatures(signatures [][]byte) error {
func (d *dirImageDestination) Commit() error {
return nil
}
// returns true if path exists
func pathExists(path string) (bool, error) {
_, err := os.Stat(path)
if err == nil {
return true, nil
}
if err != nil && os.IsNotExist(err) {
return false, nil
}
return false, err
}
// returns true if directory is empty
func isDirEmpty(path string) (bool, error) {
files, err := ioutil.ReadDir(path)
if err != nil {
return false, err
}
return len(files) == 0, nil
}
// deletes the contents of a directory
func removeDirContents(path string) error {
files, err := ioutil.ReadDir(path)
if err != nil {
return err
}
for _, file := range files {
if err := os.RemoveAll(filepath.Join(path, file.Name())); err != nil {
return err
}
}
return nil
}

View File

@@ -152,7 +152,11 @@ func (ref dirReference) NewImageSource(ctx *types.SystemContext) (types.ImageSou
// NewImageDestination returns a types.ImageDestination for this reference.
// The caller must call .Close() on the returned ImageDestination.
func (ref dirReference) NewImageDestination(ctx *types.SystemContext) (types.ImageDestination, error) {
return newImageDestination(ref), nil
compress := false
if ctx != nil {
compress = ctx.DirForceCompress
}
return newImageDestination(ref, compress)
}
// DeleteImage deletes the named image from the registry, if supported.
@@ -175,3 +179,8 @@ func (ref dirReference) layerPath(digest digest.Digest) string {
func (ref dirReference) signaturePath(index int) string {
return filepath.Join(ref.path, fmt.Sprintf("signature-%d", index+1))
}
// versionPath returns a path for the version file within a directory using our conventions.
func (ref dirReference) versionPath() string {
return filepath.Join(ref.path, "version")
}

View File

@@ -236,7 +236,7 @@ func (d *dockerImageDestination) PutManifest(m []byte) error {
return err
}
defer res.Body.Close()
if res.StatusCode != http.StatusCreated {
if !successStatus(res.StatusCode) {
err = errors.Wrapf(client.HandleErrorResponse(res), "Error uploading manifest to %s", path)
if isManifestInvalidError(errors.Cause(err)) {
err = types.ManifestTypeRejectedError{Err: err}
@@ -246,6 +246,12 @@ func (d *dockerImageDestination) PutManifest(m []byte) error {
return nil
}
// successStatus returns true if the argument is a successful HTTP response
// code (in the range 200 - 399 inclusive).
func successStatus(status int) bool {
return status >= 200 && status <= 399
}
// isManifestInvalidError returns true iff err from client.HandleErrorReponse is a “manifest invalid” error.
func isManifestInvalidError(err error) bool {
errors, ok := err.(errcode.Errors)

View File

@@ -349,6 +349,10 @@ type SystemContext struct {
DockerDaemonHost string
// Used to skip TLS verification, off by default. To take effect DockerDaemonCertPath needs to be specified as well.
DockerDaemonInsecureSkipTLSVerify bool
// === dir.Transport overrides ===
// DirForceCompress compresses the image layers if set to true
DirForceCompress bool
}
// ProgressProperties is used to pass information from the copy code to a monitor which

View File

@@ -1,4 +1,4 @@
package version
// Version is the version of the build.
const Version = "0.1.25"
const Version = "0.1.26"