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manifest/schema1: mark docker manifest v2, schema 1 deprecated

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Docker Image manifest v2, schema version 1 is deprecated since 2015, when
manifest v2, schema version 2 was introduced (2e3f4934a7).

Users should no longer use this specification other than for backward
compatibility.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2022-11-25 16:54:21 +01:00
parent ede90db01c
commit ff2bce2731
No known key found for this signature in database
GPG key ID: 76698F39D527CE8C
8 changed files with 133 additions and 23 deletions
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16
configuration/configuration.go
View file

@ -203,12 +203,24 @@ type Configuration struct {
// Compatibility is used for configurations of working with older or deprecated features.
Compatibility struct {
// Schema1 configures how schema1 manifests will be handled
// Schema1 configures how schema1 manifests will be handled.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since
// 2015. These options should only be used if you need to provide
// backward compatibility.
Schema1 struct {
// TrustKey is the signing key to use for adding the signature to
// schema1 manifests.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since
// 2015. These options should only be used if you need to provide
// backward compatibility.
TrustKey string `yaml:"signingkeyfile,omitempty"`
// Enabled determines if schema1 manifests should be pullable
// Enabled determines if schema1 manifests should be pullable.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since
// 2015. These options should only be used if you need to provide
// backward compatibility.
Enabled bool `yaml:"enabled,omitempty"`
} `yaml:"schema1,omitempty"`
} `yaml:"compatibility,omitempty"`

7
docs/spec/manifest-v2-1.md
View file

@ -6,6 +6,13 @@ keywords: registry, on-prem, images, tags, repository, distribution, api, advanc
# Image Manifest Version 2, Schema 1
> **Deprecated**
>
> Image Manifest v2, Schema 1 is deprecated. Use [Image Manifest v2, Schema 2](manifest-v2-2.md),
> or the [OCI Image Specification](https://github.com/opencontainers/image-spec).
> Image Manifest v2, Schema 1 should not be used for purposes other than backward
> compatibility.
This document outlines the format of the V2 image manifest. The image
manifest described herein was introduced in the Docker daemon in the [v1.3.0
release](https://github.com/docker/docker/commit/9f482a66ab37ec396ac61ed0c00d59122ac07453).

24
manifest/schema1/config_builder.go
View file

@ -52,6 +52,10 @@ type configManifestBuilder struct {
// schema version from an image configuration and a set of descriptors.
// It takes a BlobService so that it can add an empty tar to the blob store
// if the resulting manifest needs empty layers.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015,
// use Docker Image Manifest v2, Schema 2, or the OCI Image Specification v1.
// This package should not be used for purposes other than backward compatibility.
func NewConfigManifestBuilder(bs distribution.BlobService, pk libtrust.PrivateKey, ref reference.Named, configJSON []byte) distribution.ManifestBuilder {
return &configManifestBuilder{
bs: bs,
@ -61,7 +65,10 @@ func NewConfigManifestBuilder(bs distribution.BlobService, pk libtrust.PrivateKe
}
}
// Build produces a final manifest from the given references
// Build produces a final manifest from the given references.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func (mb *configManifestBuilder) Build(ctx context.Context) (m distribution.Manifest, err error) {
type imageRootFS struct {
Type string `json:"type"`
@ -238,7 +245,10 @@ func (mb *configManifestBuilder) emptyTar(ctx context.Context) (digest.Digest, e
return descriptor.Digest, nil
}
// AppendReference adds a reference to the current ManifestBuilder
// AppendReference adds a reference to the current ManifestBuilder.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func (mb *configManifestBuilder) AppendReference(d distribution.Describable) error {
descriptor := d.Descriptor()
@ -250,12 +260,18 @@ func (mb *configManifestBuilder) AppendReference(d distribution.Describable) err
return nil
}
// References returns the current references added to this builder
// References returns the current references added to this builder.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func (mb *configManifestBuilder) References() []distribution.Descriptor {
return mb.descriptors
}
// MakeV1ConfigFromConfig creates an legacy V1 image config from image config JSON
// MakeV1ConfigFromConfig creates an legacy V1 image config from image config JSON.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func MakeV1ConfigFromConfig(configJSON []byte, v1ID, parentV1ID string, throwaway bool) ([]byte, error) {
// Top-level v1compatibility string should be a modified version of the
// image config.

69
manifest/schema1/manifest.go
View file

@ -1,3 +1,9 @@
// Package schema1 provides definitions for the deprecated Docker Image
// Manifest v2, Schema 1 specification.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification. This package should not be used for purposes
// other than backward compatibility.
package schema1
import (
@ -10,18 +16,30 @@ import (
"github.com/opencontainers/go-digest"
)
const (
// MediaTypeManifest specifies the mediaType for the current version. Note
// that for schema version 1, the the media is optionally "application/json".
MediaTypeManifest = "application/vnd.docker.distribution.manifest.v1+json"
// MediaTypeSignedManifest specifies the mediatype for current SignedManifest version
MediaTypeSignedManifest = "application/vnd.docker.distribution.manifest.v1+prettyjws"
// MediaTypeManifestLayer specifies the media type for manifest layers
MediaTypeManifestLayer = "application/vnd.docker.container.image.rootfs.diff+x-gtar"
)
// MediaTypeManifest specifies the mediaType for the current version. Note
// that for schema version 1, the the media is optionally "application/json".
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
const MediaTypeManifest = "application/vnd.docker.distribution.manifest.v1+json"
// MediaTypeSignedManifest specifies the mediatype for current SignedManifest version
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
const MediaTypeSignedManifest = "application/vnd.docker.distribution.manifest.v1+prettyjws"
// MediaTypeManifestLayer specifies the media type for manifest layers
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
const MediaTypeManifestLayer = "application/vnd.docker.container.image.rootfs.diff+x-gtar"
// SchemaVersion provides a pre-initialized version structure for this
// packages version of the manifest.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
var SchemaVersion = manifest.Versioned{
SchemaVersion: 1,
}
@ -55,13 +73,19 @@ func init() {
}
}
// FSLayer is a container struct for BlobSums defined in an image manifest
// FSLayer is a container struct for BlobSums defined in an image manifest.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
type FSLayer struct {
// BlobSum is the tarsum of the referenced filesystem image layer
BlobSum digest.Digest `json:"blobSum"`
}
// History stores unstructured v1 compatibility information
// History stores unstructured v1 compatibility information.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
type History struct {
// V1Compatibility is the raw v1 compatibility information
V1Compatibility string `json:"v1Compatibility"`
@ -69,6 +93,9 @@ type History struct {
// Manifest provides the base accessible fields for working with V2 image
// format in the registry.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
type Manifest struct {
manifest.Versioned
@ -91,6 +118,9 @@ type Manifest struct {
// SignedManifest provides an envelope for a signed image manifest, including
// the format sensitive raw bytes.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
type SignedManifest struct {
Manifest
@ -105,6 +135,9 @@ type SignedManifest struct {
}
// UnmarshalJSON populates a new SignedManifest struct from JSON data.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func (sm *SignedManifest) UnmarshalJSON(b []byte) error {
sm.all = make([]byte, len(b))
// store manifest and signatures in all
@ -136,7 +169,10 @@ func (sm *SignedManifest) UnmarshalJSON(b []byte) error {
return nil
}
// References returns the descriptors of this manifests references
// References returns the descriptors of this manifests references.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func (sm SignedManifest) References() []distribution.Descriptor {
dependencies := make([]distribution.Descriptor, len(sm.FSLayers))
for i, fsLayer := range sm.FSLayers {
@ -153,6 +189,9 @@ func (sm SignedManifest) References() []distribution.Descriptor {
// contents. Applications requiring a marshaled signed manifest should simply
// use Raw directly, since the the content produced by json.Marshal will be
// compacted and will fail signature checks.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func (sm *SignedManifest) MarshalJSON() ([]byte, error) {
if len(sm.all) > 0 {
return sm.all, nil
@ -163,6 +202,9 @@ func (sm *SignedManifest) MarshalJSON() ([]byte, error) {
}
// Payload returns the signed content of the signed manifest.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func (sm SignedManifest) Payload() (string, []byte, error) {
return MediaTypeSignedManifest, sm.all, nil
}
@ -170,6 +212,9 @@ func (sm SignedManifest) Payload() (string, []byte, error) {
// Signatures returns the signatures as provided by
// (*libtrust.JSONSignature).Signatures. The byte slices are opaque jws
// signatures.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func (sm *SignedManifest) Signatures() ([][]byte, error) {
jsig, err := libtrust.ParsePrettySignature(sm.all, "signatures")
if err != nil {

23
manifest/schema1/reference_builder.go
View file

@ -21,6 +21,9 @@ type referenceManifestBuilder struct {
// NewReferenceManifestBuilder is used to build new manifests for the current
// schema version using schema1 dependencies.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func NewReferenceManifestBuilder(pk libtrust.PrivateKey, ref reference.Named, architecture string) distribution.ManifestBuilder {
tag := ""
if tagged, isTagged := ref.(reference.Tagged); isTagged {
@ -54,7 +57,10 @@ func (mb *referenceManifestBuilder) Build(ctx context.Context) (distribution.Man
return Sign(&m, mb.pk)
}
// AppendReference adds a reference to the current ManifestBuilder
// AppendReference adds a reference to the current ManifestBuilder.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func (mb *referenceManifestBuilder) AppendReference(d distribution.Describable) error {
r, ok := d.(Reference)
if !ok {
@ -67,7 +73,10 @@ func (mb *referenceManifestBuilder) AppendReference(d distribution.Describable)
return nil
}
// References returns the current references added to this builder
// References returns the current references added to this builder.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func (mb *referenceManifestBuilder) References() []distribution.Descriptor {
refs := make([]distribution.Descriptor, len(mb.Manifest.FSLayers))
for i := range mb.Manifest.FSLayers {
@ -79,15 +88,21 @@ func (mb *referenceManifestBuilder) References() []distribution.Descriptor {
return refs
}
// Reference describes a manifest v2, schema version 1 dependency.
// Reference describes a Manifest v2, schema version 1 dependency.
// An FSLayer associated with a history entry.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
type Reference struct {
Digest digest.Digest
Size int64 // if we know it, set it for the descriptor.
History History
}
// Descriptor describes a reference
// Descriptor describes a reference.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func (r Reference) Descriptor() distribution.Descriptor {
return distribution.Descriptor{
MediaType: MediaTypeManifestLayer,

6
manifest/schema1/sign.go
View file

@ -10,6 +10,9 @@ import (
// Sign signs the manifest with the provided private key, returning a
// SignedManifest. This typically won't be used within the registry, except
// for testing.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func Sign(m *Manifest, pk libtrust.PrivateKey) (*SignedManifest, error) {
p, err := json.MarshalIndent(m, "", " ")
if err != nil {
@ -40,6 +43,9 @@ func Sign(m *Manifest, pk libtrust.PrivateKey) (*SignedManifest, error) {
// SignWithChain signs the manifest with the given private key and x509 chain.
// The public key of the first element in the chain must be the public key
// corresponding with the sign key.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func SignWithChain(m *Manifest, key libtrust.PrivateKey, chain []*x509.Certificate) (*SignedManifest, error) {
p, err := json.MarshalIndent(m, "", " ")
if err != nil {

6
manifest/schema1/verify.go
View file

@ -9,6 +9,9 @@ import (
// Verify verifies the signature of the signed manifest returning the public
// keys used during signing.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func Verify(sm *SignedManifest) ([]libtrust.PublicKey, error) {
js, err := libtrust.ParsePrettySignature(sm.all, "signatures")
if err != nil {
@ -22,6 +25,9 @@ func Verify(sm *SignedManifest) ([]libtrust.PublicKey, error) {
// VerifyChains verifies the signature of the signed manifest against the
// certificate pool returning the list of verified chains. Signatures without
// an x509 chain are not checked.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func VerifyChains(sm *SignedManifest, ca *x509.CertPool) ([][]*x509.Certificate, error) {
js, err := libtrust.ParsePrettySignature(sm.all, "signatures")
if err != nil {

5
testutil/manifests.go
View file

@ -40,7 +40,10 @@ func MakeManifestList(blobstatter distribution.BlobStatter, manifestDigests []di
}
// MakeSchema1Manifest constructs a schema 1 manifest from a given list of digests and returns
// the digest of the manifest
// the digest of the manifest.
//
// Deprecated: Docker Image Manifest v2, Schema 1 is deprecated since 2015.
// Use Docker Image Manifest v2, Schema 2, or the OCI Image Specification.
func MakeSchema1Manifest(digests []digest.Digest) (distribution.Manifest, error) {
manifest := schema1.Manifest{
Versioned: manifest.Versioned{