func (b *bridge) createManifestEvent(action string, repo reference.Named, sm distribution.Manifest) (*Event, error) {
event := b.createEvent(action)
event.Target.Repository = repo.Name()
mt, p, err := sm.Payload()
if err != nil {
return nil, err
}
// Ensure we have the canonical manifest descriptor here
_, desc, err := distribution.UnmarshalManifest(mt, p)
if err != nil {
return nil, err
}
event.Target.MediaType = mt
event.Target.Length = desc.Size
event.Target.Size = desc.Size
event.Target.Digest = desc.Digest
ref, err := reference.WithDigest(repo, event.Target.Digest)
if err != nil {
return nil, err
}
event.Target.URL, err = b.ub.BuildManifestURL(ref)
if err != nil {
return nil, err
}
return event, nil
}
// schema2ManifestDigest computes the manifest digest, and, if pulling by
// digest, ensures that it matches the requested digest.
func schema2ManifestDigest(ref reference.Named, mfst distribution.Manifest) (digest.Digest, error) {
_, canonical, err := mfst.Payload()
if err != nil {
return "", err
}
// If pull by digest, then verify the manifest digest.
if digested, isDigested := ref.(reference.Canonical); isDigested {
verifier, err := digest.NewDigestVerifier(digested.Digest())
if err != nil {
return "", err
}
if _, err := verifier.Write(canonical); err != nil {
return "", err
}
if !verifier.Verified() {
err := fmt.Errorf("manifest verification failed for digest %s", digested.Digest())
logrus.Error(err)
return "", err
}
return digested.Digest(), nil
}
return digest.FromBytes(canonical), nil
}
// rememberLayersOfManifest caches the layer digests of given manifest
func (r *repository) rememberLayersOfManifest(manifestDigest digest.Digest, manifest distribution.Manifest, cacheName string) {
r.cachedLayers.RememberDigest(manifestDigest, r.blobrepositorycachettl, cacheName)
// remember the layers in the cache as an optimization to avoid searching all remote repositories
for _, layer := range manifest.References() {
r.cachedLayers.RememberDigest(layer.Digest, r.blobrepositorycachettl, cacheName)
}
}
// rememberLayers caches the provided layers
func (r *repository) rememberLayers(manifest distribution.Manifest, cacheName string) {
if !r.pullthrough {
return
}
// remember the layers in the cache as an optimization to avoid searching all remote repositories
for _, layer := range manifest.References() {
r.cachedLayers.RememberDigest(layer.Digest, cacheName)
}
}
// Put puts a manifest. A tag can be specified using an options parameter which uses some shared state to hold the
// tag name in order to build the correct upload URL. This state is written and read under a lock.
func (ms *manifests) Put(ctx context.Context, m distribution.Manifest, options ...distribution.ManifestServiceOption) (digest.Digest, error) {
ref := ms.name
for _, option := range options {
if opt, ok := option.(withTagOption); ok {
var err error
ref, err = reference.WithTag(ref, opt.tag)
if err != nil {
return "", err
}
} else {
err := option.Apply(ms)
if err != nil {
return "", err
}
}
}
manifestURL, err := ms.ub.BuildManifestURL(ref)
if err != nil {
return "", err
}
mediaType, p, err := m.Payload()
if err != nil {
return "", err
}
putRequest, err := http.NewRequest("PUT", manifestURL, bytes.NewReader(p))
if err != nil {
return "", err
}
putRequest.Header.Set("Content-Type", mediaType)
resp, err := ms.client.Do(putRequest)
if err != nil {
return "", err
}
defer resp.Body.Close()
if SuccessStatus(resp.StatusCode) {
dgstHeader := resp.Header.Get("Docker-Content-Digest")
dgst, err := digest.ParseDigest(dgstHeader)
if err != nil {
return "", err
}
return dgst, nil
}
return "", HandleErrorResponse(resp)
}
// GetImageManifest fetches the image manifest from the storage backend, if it exists.
// todo(richardscothern): this assumes v2 schema 1 manifests for now but in the future
// get the version from the Accept HTTP header
func (imh *imageManifestHandler) GetImageManifest(w http.ResponseWriter, r *http.Request) {
ctxu.GetLogger(imh).Debug("GetImageManifest")
manifests, err := imh.Repository.Manifests(imh)
if err != nil {
imh.Errors = append(imh.Errors, err)
return
}
var manifest distribution.Manifest
if imh.Tag != "" {
tags := imh.Repository.Tags(imh)
desc, err := tags.Get(imh, imh.Tag)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
return
}
imh.Digest = desc.Digest
}
if etagMatch(r, imh.Digest.String()) {
w.WriteHeader(http.StatusNotModified)
return
}
manifest, err = manifests.Get(imh, imh.Digest)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
return
}
ct, p, err := manifest.Payload()
if err != nil {
return
}
w.Header().Set("Content-Type", ct)
w.Header().Set("Content-Length", fmt.Sprint(len(p)))
w.Header().Set("Docker-Content-Digest", imh.Digest.String())
w.Header().Set("Etag", fmt.Sprintf(`"%s"`, imh.Digest))
w.Write(p)
}
func (b *bridge) createManifestEvent(action string, repo string, sm distribution.Manifest) (*Event, error) {
event := b.createEvent(action)
event.Target.Repository = repo
mt, p, err := sm.Payload()
if err != nil {
return nil, err
}
event.Target.MediaType = mt
event.Target.Length = int64(len(p))
event.Target.Size = int64(len(p))
event.Target.Digest = digest.FromBytes(p)
event.Target.URL, err = b.ub.BuildManifestURL(repo, event.Target.Digest.String())
if err != nil {
return nil, err
}
return event, nil
}
// GetImageManifest fetches the image manifest from the storage backend, if it exists.
func (imh *imageManifestHandler) GetImageManifest(w http.ResponseWriter, r *http.Request) {
ctxu.GetLogger(imh).Debug("GetImageManifest")
manifests, err := imh.Repository.Manifests(imh)
if err != nil {
imh.Errors = append(imh.Errors, err)
return
}
var manifest distribution.Manifest
if imh.Tag != "" {
tags := imh.Repository.Tags(imh)
desc, err := tags.Get(imh, imh.Tag)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
return
}
imh.Digest = desc.Digest
}
if etagMatch(r, imh.Digest.String()) {
w.WriteHeader(http.StatusNotModified)
return
}
var options []distribution.ManifestServiceOption
if imh.Tag != "" {
options = append(options, distribution.WithTag(imh.Tag))
}
manifest, err = manifests.Get(imh, imh.Digest, options...)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
return
}
supportsSchema2 := false
supportsManifestList := false
if acceptHeaders, ok := r.Header["Accept"]; ok {
for _, mediaType := range acceptHeaders {
if mediaType == schema2.MediaTypeManifest {
supportsSchema2 = true
}
if mediaType == manifestlist.MediaTypeManifestList {
supportsManifestList = true
}
}
}
schema2Manifest, isSchema2 := manifest.(*schema2.DeserializedManifest)
manifestList, isManifestList := manifest.(*manifestlist.DeserializedManifestList)
// Only rewrite schema2 manifests when they are being fetched by tag.
// If they are being fetched by digest, we can't return something not
// matching the digest.
if imh.Tag != "" && isSchema2 && !supportsSchema2 {
// Rewrite manifest in schema1 format
ctxu.GetLogger(imh).Infof("rewriting manifest %s in schema1 format to support old client", imh.Digest.String())
manifest, err = imh.convertSchema2Manifest(schema2Manifest)
if err != nil {
return
}
} else if imh.Tag != "" && isManifestList && !supportsManifestList {
// Rewrite manifest in schema1 format
ctxu.GetLogger(imh).Infof("rewriting manifest list %s in schema1 format to support old client", imh.Digest.String())
// Find the image manifest corresponding to the default
// platform
var manifestDigest digest.Digest
for _, manifestDescriptor := range manifestList.Manifests {
if manifestDescriptor.Platform.Architecture == defaultArch && manifestDescriptor.Platform.OS == defaultOS {
manifestDigest = manifestDescriptor.Digest
break
}
}
if manifestDigest == "" {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown)
return
}
manifest, err = manifests.Get(imh, manifestDigest)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
return
}
// If necessary, convert the image manifest
if schema2Manifest, isSchema2 := manifest.(*schema2.DeserializedManifest); isSchema2 && !supportsSchema2 {
manifest, err = imh.convertSchema2Manifest(schema2Manifest)
if err != nil {
return
}
}
}
ct, p, err := manifest.Payload()
if err != nil {
return
}
w.Header().Set("Content-Type", ct)
w.Header().Set("Content-Length", fmt.Sprint(len(p)))
w.Header().Set("Docker-Content-Digest", imh.Digest.String())
w.Header().Set("Etag", fmt.Sprintf(`"%s"`, imh.Digest))
w.Write(p)
}
// Put creates or updates the named manifest.
func (r *repository) Put(ctx context.Context, manifest distribution.Manifest, options ...distribution.ManifestServiceOption) (digest.Digest, error) {
if err := r.checkPendingErrors(ctx); err != nil {
return "", err
}
var canonical []byte
// Resolve the payload in the manifest.
mediatype, payload, err := manifest.Payload()
if err != nil {
return "", err
}
switch manifest.(type) {
case *schema1.SignedManifest:
canonical = manifest.(*schema1.SignedManifest).Canonical
case *schema2.DeserializedManifest:
canonical = payload
default:
err = fmt.Errorf("unrecognized manifest type %T", manifest)
return "", regapi.ErrorCodeManifestInvalid.WithDetail(err)
}
if !r.acceptschema2 {
if _, ok := manifest.(*schema1.SignedManifest); !ok {
err = fmt.Errorf("schema version 2 disabled")
return "", regapi.ErrorCodeManifestInvalid.WithDetail(err)
}
}
// Calculate digest
dgst := digest.FromBytes(canonical)
// Upload to openshift
ism := imageapi.ImageStreamMapping{
ObjectMeta: kapi.ObjectMeta{
Namespace: r.namespace,
Name: r.name,
},
Image: imageapi.Image{
ObjectMeta: kapi.ObjectMeta{
Name: dgst.String(),
Annotations: map[string]string{
imageapi.ManagedByOpenShiftAnnotation: "true",
},
},
DockerImageReference: fmt.Sprintf("%s/%s/%s@%s", r.registryAddr, r.namespace, r.name, dgst.String()),
DockerImageManifest: string(payload),
DockerImageManifestMediaType: mediatype,
},
}
for _, option := range options {
if opt, ok := option.(distribution.WithTagOption); ok {
ism.Tag = opt.Tag
break
}
}
if err = r.fillImageWithMetadata(manifest, &ism.Image); err != nil {
return "", err
}
if err = r.registryOSClient.ImageStreamMappings(r.namespace).Create(&ism); err != nil {
// if the error was that the image stream wasn't found, try to auto provision it
statusErr, ok := err.(*kerrors.StatusError)
if !ok {
context.GetLogger(r.ctx).Errorf("error creating ImageStreamMapping: %s", err)
return "", err
}
if quotautil.IsErrorQuotaExceeded(statusErr) {
context.GetLogger(r.ctx).Errorf("denied creating ImageStreamMapping: %v", statusErr)
return "", distribution.ErrAccessDenied
}
status := statusErr.ErrStatus
if status.Code != http.StatusNotFound || (strings.ToLower(status.Details.Kind) != "imagestream" /*pre-1.2*/ && strings.ToLower(status.Details.Kind) != "imagestreams") || status.Details.Name != r.name {
context.GetLogger(r.ctx).Errorf("error creating ImageStreamMapping: %s", err)
return "", err
}
stream := imageapi.ImageStream{
ObjectMeta: kapi.ObjectMeta{
Name: r.name,
},
}
uclient, ok := UserClientFrom(r.ctx)
if !ok {
context.GetLogger(r.ctx).Errorf("error creating user client to auto provision image stream: Origin user client unavailable")
return "", statusErr
}
if _, err := uclient.ImageStreams(r.namespace).Create(&stream); err != nil {
if quotautil.IsErrorQuotaExceeded(err) {
context.GetLogger(r.ctx).Errorf("denied creating ImageStream: %v", err)
return "", distribution.ErrAccessDenied
}
context.GetLogger(r.ctx).Errorf("error auto provisioning ImageStream: %s", err)
return "", statusErr
}
// try to create the ISM again
if err := r.registryOSClient.ImageStreamMappings(r.namespace).Create(&ism); err != nil {
if quotautil.IsErrorQuotaExceeded(err) {
context.GetLogger(r.ctx).Errorf("denied a creation of ImageStreamMapping: %v", err)
return "", distribution.ErrAccessDenied
}
context.GetLogger(r.ctx).Errorf("error creating ImageStreamMapping: %s", err)
return "", err
}
}
return dgst, nil
}
func storeTestImage(
ctx context.Context,
reg distribution.Namespace,
imageReference reference.NamedTagged,
schemaVersion int,
managedByOpenShift bool,
) (*imageapi.Image, error) {
repo, err := reg.Repository(ctx, imageReference)
if err != nil {
return nil, fmt.Errorf("unexpected error getting repo %q: %v", imageReference.Name(), err)
}
var (
m distribution.Manifest
m1 schema1.Manifest
)
switch schemaVersion {
case 1:
m1 = schema1.Manifest{
Versioned: manifest.Versioned{
SchemaVersion: 1,
},
Name: imageReference.Name(),
Tag: imageReference.Tag(),
}
case 2:
// TODO
fallthrough
default:
return nil, fmt.Errorf("unsupported manifest version %d", schemaVersion)
}
for i := 0; i < testImageLayerCount; i++ {
rs, ds, err := registrytest.CreateRandomTarFile()
if err != nil {
return nil, fmt.Errorf("unexpected error generating test layer file: %v", err)
}
dgst := digest.Digest(ds)
wr, err := repo.Blobs(ctx).Create(ctx)
if err != nil {
return nil, fmt.Errorf("unexpected error creating test upload: %v", err)
}
defer wr.Close()
n, err := io.Copy(wr, rs)
if err != nil {
return nil, fmt.Errorf("unexpected error copying to upload: %v", err)
}
if schemaVersion == 1 {
m1.FSLayers = append(m1.FSLayers, schema1.FSLayer{BlobSum: dgst})
m1.History = append(m1.History, schema1.History{V1Compatibility: fmt.Sprintf(`{"size":%d}`, n)})
} // TODO v2
if _, err := wr.Commit(ctx, distribution.Descriptor{Digest: dgst, MediaType: schema1.MediaTypeManifestLayer}); err != nil {
return nil, fmt.Errorf("unexpected error finishing upload: %v", err)
}
}
var dgst digest.Digest
var payload []byte
if schemaVersion == 1 {
pk, err := libtrust.GenerateECP256PrivateKey()
if err != nil {
return nil, fmt.Errorf("unexpected error generating private key: %v", err)
}
m, err = schema1.Sign(&m1, pk)
if err != nil {
return nil, fmt.Errorf("error signing manifest: %v", err)
}
_, payload, err = m.Payload()
if err != nil {
return nil, fmt.Errorf("error getting payload %#v", err)
}
dgst = digest.FromBytes(payload)
} //TODO v2
image := &imageapi.Image{
ObjectMeta: kapi.ObjectMeta{
Name: dgst.String(),
},
DockerImageManifest: string(payload),
DockerImageReference: imageReference.Name() + "@" + dgst.String(),
}
if managedByOpenShift {
image.Annotations = map[string]string{imageapi.ManagedByOpenShiftAnnotation: "true"}
}
if schemaVersion == 1 {
signedManifest := m.(*schema1.SignedManifest)
signatures, err := signedManifest.Signatures()
if err != nil {
return nil, err
}
for _, signDigest := range signatures {
image.DockerImageSignatures = append(image.DockerImageSignatures, signDigest)
}
}
err = imageapi.ImageWithMetadata(image)
if err != nil {
return nil, fmt.Errorf("failed to fill image with metadata: %v", err)
}
return image, nil
}
// GetImageManifest fetches the image manifest from the storage backend, if it exists.
func (imh *imageManifestHandler) GetImageManifest(w http.ResponseWriter, r *http.Request) {
ctxu.GetLogger(imh).Debug("GetImageManifest")
manifests, err := imh.Repository.Manifests(imh)
if err != nil {
imh.Errors = append(imh.Errors, err)
return
}
var manifest distribution.Manifest
if imh.Tag != "" {
tags := imh.Repository.Tags(imh)
desc, err := tags.Get(imh, imh.Tag)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
return
}
imh.Digest = desc.Digest
}
if etagMatch(r, imh.Digest.String()) {
w.WriteHeader(http.StatusNotModified)
return
}
var options []distribution.ManifestServiceOption
if imh.Tag != "" {
options = append(options, distribution.WithTag(imh.Tag))
}
manifest, err = manifests.Get(imh, imh.Digest, options...)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
return
}
supportsSchema2 := false
supportsManifestList := false
// this parsing of Accept headers is not quite as full-featured as godoc.org's parser, but we don't care about "q=" values
// https://github.com/golang/gddo/blob/e91d4165076d7474d20abda83f92d15c7ebc3e81/httputil/header/header.go#L165-L202
for _, acceptHeader := range r.Header["Accept"] {
// r.Header[...] is a slice in case the request contains the same header more than once
// if the header isn't set, we'll get the zero value, which "range" will handle gracefully
// we need to split each header value on "," to get the full list of "Accept" values (per RFC 2616)
// https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
for _, mediaType := range strings.Split(acceptHeader, ",") {
// remove "; q=..." if present
if i := strings.Index(mediaType, ";"); i >= 0 {
mediaType = mediaType[:i]
}
// it's common (but not required) for Accept values to be space separated ("a/b, c/d, e/f")
mediaType = strings.TrimSpace(mediaType)
if mediaType == schema2.MediaTypeManifest {
supportsSchema2 = true
}
if mediaType == manifestlist.MediaTypeManifestList {
supportsManifestList = true
}
}
}
schema2Manifest, isSchema2 := manifest.(*schema2.DeserializedManifest)
manifestList, isManifestList := manifest.(*manifestlist.DeserializedManifestList)
// Only rewrite schema2 manifests when they are being fetched by tag.
// If they are being fetched by digest, we can't return something not
// matching the digest.
if imh.Tag != "" && isSchema2 && !supportsSchema2 {
// Rewrite manifest in schema1 format
ctxu.GetLogger(imh).Infof("rewriting manifest %s in schema1 format to support old client", imh.Digest.String())
manifest, err = imh.convertSchema2Manifest(schema2Manifest)
if err != nil {
return
}
} else if imh.Tag != "" && isManifestList && !supportsManifestList {
// Rewrite manifest in schema1 format
ctxu.GetLogger(imh).Infof("rewriting manifest list %s in schema1 format to support old client", imh.Digest.String())
// Find the image manifest corresponding to the default
// platform
var manifestDigest digest.Digest
for _, manifestDescriptor := range manifestList.Manifests {
if manifestDescriptor.Platform.Architecture == defaultArch && manifestDescriptor.Platform.OS == defaultOS {
manifestDigest = manifestDescriptor.Digest
break
}
}
if manifestDigest == "" {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown)
return
}
manifest, err = manifests.Get(imh, manifestDigest)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
return
}
// If necessary, convert the image manifest
if schema2Manifest, isSchema2 := manifest.(*schema2.DeserializedManifest); isSchema2 && !supportsSchema2 {
manifest, err = imh.convertSchema2Manifest(schema2Manifest)
if err != nil {
return
}
}
}
ct, p, err := manifest.Payload()
if err != nil {
return
}
w.Header().Set("Content-Type", ct)
w.Header().Set("Content-Length", fmt.Sprint(len(p)))
w.Header().Set("Docker-Content-Digest", imh.Digest.String())
w.Header().Set("Etag", fmt.Sprintf(`"%s"`, imh.Digest))
w.Write(p)
}
