// verifyManifest ensures that the manifest content is valid from the
// perspective of the registry. It ensures that the signature is valid for the
// enclosed payload. As a policy, the registry only tries to store valid
// content, leaving trust policies of that content up to consumers.
func (ms *signedManifestHandler) verifyManifest(ctx context.Context, mnfst schema1.SignedManifest, skipDependencyVerification bool) error {
var errs distribution.ErrManifestVerification
if len(mnfst.Name) > reference.NameTotalLengthMax {
errs = append(errs,
distribution.ErrManifestNameInvalid{
Name: mnfst.Name,
Reason: fmt.Errorf("manifest name must not be more than %v characters", reference.NameTotalLengthMax),
})
}
if !reference.NameRegexp.MatchString(mnfst.Name) {
errs = append(errs,
distribution.ErrManifestNameInvalid{
Name: mnfst.Name,
Reason: fmt.Errorf("invalid manifest name format"),
})
}
if len(mnfst.History) != len(mnfst.FSLayers) {
errs = append(errs, fmt.Errorf("mismatched history and fslayer cardinality %d != %d",
len(mnfst.History), len(mnfst.FSLayers)))
}
if _, err := schema1.Verify(&mnfst); err != nil {
switch err {
case libtrust.ErrMissingSignatureKey, libtrust.ErrInvalidJSONContent, libtrust.ErrMissingSignatureKey:
errs = append(errs, distribution.ErrManifestUnverified{})
default:
if err.Error() == "invalid signature" { // TODO(stevvooe): This should be exported by libtrust
errs = append(errs, distribution.ErrManifestUnverified{})
} else {
errs = append(errs, err)
}
}
}
if !skipDependencyVerification {
for _, fsLayer := range mnfst.References() {
_, err := ms.repository.Blobs(ctx).Stat(ctx, fsLayer.Digest)
if err != nil {
if err != distribution.ErrBlobUnknown {
errs = append(errs, err)
}
// On error here, we always append unknown blob errors.
errs = append(errs, distribution.ErrManifestBlobUnknown{Digest: fsLayer.Digest})
}
}
}
if len(errs) != 0 {
return errs
}
return nil
}
// verifyManifest ensures that the manifest content is valid from the
// perspective of the registry. It ensures that the signature is valid for the
// enclosed payload. As a policy, the registry only tries to store valid
// content, leaving trust policies of that content up to consumers.
func (ms *manifestStore) verifyManifest(ctx context.Context, mnfst *schema1.SignedManifest) error {
var errs distribution.ErrManifestVerification
if mnfst.Name != ms.repository.Name() {
errs = append(errs, fmt.Errorf("repository name does not match manifest name"))
}
if len(mnfst.History) != len(mnfst.FSLayers) {
errs = append(errs, fmt.Errorf("mismatched history and fslayer cardinality %d != %d",
len(mnfst.History), len(mnfst.FSLayers)))
}
if _, err := schema1.Verify(mnfst); err != nil {
switch err {
case libtrust.ErrMissingSignatureKey, libtrust.ErrInvalidJSONContent, libtrust.ErrMissingSignatureKey:
errs = append(errs, distribution.ErrManifestUnverified{})
default:
if err.Error() == "invalid signature" { // TODO(stevvooe): This should be exported by libtrust
errs = append(errs, distribution.ErrManifestUnverified{})
} else {
errs = append(errs, err)
}
}
}
if !ms.skipDependencyVerification {
for _, fsLayer := range mnfst.FSLayers {
_, err := ms.repository.Blobs(ctx).Stat(ctx, fsLayer.BlobSum)
if err != nil {
if err != distribution.ErrBlobUnknown {
errs = append(errs, err)
}
// On error here, we always append unknown blob errors.
errs = append(errs, distribution.ErrManifestBlobUnknown{Digest: fsLayer.BlobSum})
}
}
}
if len(errs) != 0 {
return errs
}
return nil
}
func testManifestStorage(t *testing.T, options ...RegistryOption) {
repoName, _ := reference.ParseNamed("foo/bar")
env := newManifestStoreTestEnv(t, repoName, "thetag", options...)
ctx := context.Background()
ms, err := env.repository.Manifests(ctx)
if err != nil {
t.Fatal(err)
}
equalSignatures := env.registry.(*registry).schema1SignaturesEnabled
m := schema1.Manifest{
Versioned: manifest.Versioned{
SchemaVersion: 1,
},
Name: env.name.Name(),
Tag: env.tag,
}
// Build up some test layers and add them to the manifest, saving the
// readseekers for upload later.
testLayers := map[digest.Digest]io.ReadSeeker{}
for i := 0; i < 2; i++ {
rs, ds, err := testutil.CreateRandomTarFile()
if err != nil {
t.Fatalf("unexpected error generating test layer file")
}
dgst := digest.Digest(ds)
testLayers[digest.Digest(dgst)] = rs
m.FSLayers = append(m.FSLayers, schema1.FSLayer{
BlobSum: dgst,
})
m.History = append(m.History, schema1.History{
V1Compatibility: "",
})
}
pk, err := libtrust.GenerateECP256PrivateKey()
if err != nil {
t.Fatalf("unexpected error generating private key: %v", err)
}
sm, merr := schema1.Sign(&m, pk)
if merr != nil {
t.Fatalf("error signing manifest: %v", err)
}
_, err = ms.Put(ctx, sm)
if err == nil {
t.Fatalf("expected errors putting manifest with full verification")
}
switch err := err.(type) {
case distribution.ErrManifestVerification:
if len(err) != 2 {
t.Fatalf("expected 2 verification errors: %#v", err)
}
for _, err := range err {
if _, ok := err.(distribution.ErrManifestBlobUnknown); !ok {
t.Fatalf("unexpected error type: %v", err)
}
}
default:
t.Fatalf("unexpected error verifying manifest: %v", err)
}
// Now, upload the layers that were missing!
for dgst, rs := range testLayers {
wr, err := env.repository.Blobs(env.ctx).Create(env.ctx)
if err != nil {
t.Fatalf("unexpected error creating test upload: %v", err)
}
if _, err := io.Copy(wr, rs); err != nil {
t.Fatalf("unexpected error copying to upload: %v", err)
}
if _, err := wr.Commit(env.ctx, distribution.Descriptor{Digest: dgst}); err != nil {
t.Fatalf("unexpected error finishing upload: %v", err)
}
}
var manifestDigest digest.Digest
if manifestDigest, err = ms.Put(ctx, sm); err != nil {
t.Fatalf("unexpected error putting manifest: %v", err)
}
exists, err := ms.Exists(ctx, manifestDigest)
if err != nil {
t.Fatalf("unexpected error checking manifest existence: %#v", err)
}
if !exists {
t.Fatalf("manifest should exist")
}
fromStore, err := ms.Get(ctx, manifestDigest)
if err != nil {
t.Fatalf("unexpected error fetching manifest: %v", err)
}
fetchedManifest, ok := fromStore.(*schema1.SignedManifest)
if !ok {
t.Fatalf("unexpected manifest type from signedstore")
}
if !bytes.Equal(fetchedManifest.Canonical, sm.Canonical) {
t.Fatalf("fetched payload does not match original payload: %q != %q", fetchedManifest.Canonical, sm.Canonical)
}
if equalSignatures {
if !reflect.DeepEqual(fetchedManifest, sm) {
t.Fatalf("fetched manifest not equal: %#v != %#v", fetchedManifest.Manifest, sm.Manifest)
}
}
_, pl, err := fetchedManifest.Payload()
if err != nil {
t.Fatalf("error getting payload %#v", err)
}
fetchedJWS, err := libtrust.ParsePrettySignature(pl, "signatures")
if err != nil {
t.Fatalf("unexpected error parsing jws: %v", err)
}
payload, err := fetchedJWS.Payload()
if err != nil {
t.Fatalf("unexpected error extracting payload: %v", err)
}
// Now that we have a payload, take a moment to check that the manifest is
// return by the payload digest.
dgst := digest.FromBytes(payload)
exists, err = ms.Exists(ctx, dgst)
if err != nil {
t.Fatalf("error checking manifest existence by digest: %v", err)
}
if !exists {
t.Fatalf("manifest %s should exist", dgst)
}
fetchedByDigest, err := ms.Get(ctx, dgst)
if err != nil {
t.Fatalf("unexpected error fetching manifest by digest: %v", err)
}
byDigestManifest, ok := fetchedByDigest.(*schema1.SignedManifest)
if !ok {
t.Fatalf("unexpected manifest type from signedstore")
}
if !bytes.Equal(byDigestManifest.Canonical, fetchedManifest.Canonical) {
t.Fatalf("fetched manifest not equal: %q != %q", byDigestManifest.Canonical, fetchedManifest.Canonical)
}
if equalSignatures {
if !reflect.DeepEqual(fetchedByDigest, fetchedManifest) {
t.Fatalf("fetched manifest not equal: %#v != %#v", fetchedByDigest, fetchedManifest)
}
}
sigs, err := fetchedJWS.Signatures()
if err != nil {
t.Fatalf("unable to extract signatures: %v", err)
}
if len(sigs) != 1 {
t.Fatalf("unexpected number of signatures: %d != %d", len(sigs), 1)
}
// Now, push the same manifest with a different key
pk2, err := libtrust.GenerateECP256PrivateKey()
if err != nil {
t.Fatalf("unexpected error generating private key: %v", err)
}
sm2, err := schema1.Sign(&m, pk2)
if err != nil {
t.Fatalf("unexpected error signing manifest: %v", err)
}
_, pl, err = sm2.Payload()
if err != nil {
t.Fatalf("error getting payload %#v", err)
}
jws2, err := libtrust.ParsePrettySignature(pl, "signatures")
if err != nil {
t.Fatalf("error parsing signature: %v", err)
}
sigs2, err := jws2.Signatures()
if err != nil {
t.Fatalf("unable to extract signatures: %v", err)
}
if len(sigs2) != 1 {
t.Fatalf("unexpected number of signatures: %d != %d", len(sigs2), 1)
}
if manifestDigest, err = ms.Put(ctx, sm2); err != nil {
t.Fatalf("unexpected error putting manifest: %v", err)
}
fromStore, err = ms.Get(ctx, manifestDigest)
if err != nil {
t.Fatalf("unexpected error fetching manifest: %v", err)
}
fetched, ok := fromStore.(*schema1.SignedManifest)
if !ok {
t.Fatalf("unexpected type from signed manifeststore : %T", fetched)
}
if _, err := schema1.Verify(fetched); err != nil {
t.Fatalf("unexpected error verifying manifest: %v", err)
}
// Assemble our payload and two signatures to get what we expect!
expectedJWS, err := libtrust.NewJSONSignature(payload, sigs[0], sigs2[0])
if err != nil {
t.Fatalf("unexpected error merging jws: %v", err)
}
expectedSigs, err := expectedJWS.Signatures()
if err != nil {
t.Fatalf("unexpected error getting expected signatures: %v", err)
}
_, pl, err = fetched.Payload()
if err != nil {
t.Fatalf("error getting payload %#v", err)
}
receivedJWS, err := libtrust.ParsePrettySignature(pl, "signatures")
if err != nil {
t.Fatalf("unexpected error parsing jws: %v", err)
}
receivedPayload, err := receivedJWS.Payload()
if err != nil {
t.Fatalf("unexpected error extracting received payload: %v", err)
}
if !bytes.Equal(receivedPayload, payload) {
t.Fatalf("payloads are not equal")
}
if equalSignatures {
receivedSigs, err := receivedJWS.Signatures()
if err != nil {
t.Fatalf("error getting signatures: %v", err)
}
for i, sig := range receivedSigs {
if !bytes.Equal(sig, expectedSigs[i]) {
t.Fatalf("mismatched signatures from remote: %v != %v", string(sig), string(expectedSigs[i]))
}
}
}
// Test deleting manifests
err = ms.Delete(ctx, dgst)
if err != nil {
t.Fatalf("unexpected an error deleting manifest by digest: %v", err)
}
exists, err = ms.Exists(ctx, dgst)
if err != nil {
t.Fatalf("Error querying manifest existence")
}
if exists {
t.Errorf("Deleted manifest should not exist")
}
deletedManifest, err := ms.Get(ctx, dgst)
if err == nil {
t.Errorf("Unexpected success getting deleted manifest")
}
switch err.(type) {
case distribution.ErrManifestUnknownRevision:
break
default:
t.Errorf("Unexpected error getting deleted manifest: %s", reflect.ValueOf(err).Type())
}
if deletedManifest != nil {
t.Errorf("Deleted manifest get returned non-nil")
}
// Re-upload should restore manifest to a good state
_, err = ms.Put(ctx, sm)
if err != nil {
t.Errorf("Error re-uploading deleted manifest")
}
exists, err = ms.Exists(ctx, dgst)
if err != nil {
t.Fatalf("Error querying manifest existence")
}
if !exists {
t.Errorf("Restored manifest should exist")
}
deletedManifest, err = ms.Get(ctx, dgst)
if err != nil {
t.Errorf("Unexpected error getting manifest")
}
if deletedManifest == nil {
t.Errorf("Deleted manifest get returned non-nil")
}
r, err := NewRegistry(ctx, env.driver, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableRedirect)
if err != nil {
t.Fatalf("error creating registry: %v", err)
}
repo, err := r.Repository(ctx, env.name)
if err != nil {
t.Fatalf("unexpected error getting repo: %v", err)
}
ms, err = repo.Manifests(ctx)
if err != nil {
t.Fatal(err)
}
err = ms.Delete(ctx, dgst)
if err == nil {
t.Errorf("Unexpected success deleting while disabled")
}
}
func TestManifestStorage(t *testing.T) {
env := newManifestStoreTestEnv(t, "foo/bar", "thetag")
ctx := context.Background()
ms, err := env.repository.Manifests(ctx)
if err != nil {
t.Fatal(err)
}
exists, err := ms.ExistsByTag(env.tag)
if err != nil {
t.Fatalf("unexpected error checking manifest existence: %v", err)
}
if exists {
t.Fatalf("manifest should not exist")
}
dgsts, err := ms.Enumerate()
if err != nil {
t.Errorf("unexpected error enumerating manifest revisions: %v", err)
} else if len(dgsts) != 0 {
t.Errorf("expected exactly 0 manifests, not %d", len(dgsts))
}
if _, err := ms.GetByTag(env.tag); true {
switch err.(type) {
case distribution.ErrManifestUnknown:
break
default:
t.Fatalf("expected manifest unknown error: %#v", err)
}
}
m := schema1.Manifest{
Versioned: manifest.Versioned{
SchemaVersion: 1,
},
Name: env.name,
Tag: env.tag,
}
// Build up some test layers and add them to the manifest, saving the
// readseekers for upload later.
testLayers := map[digest.Digest]io.ReadSeeker{}
for i := 0; i < 2; i++ {
rs, ds, err := testutil.CreateRandomTarFile()
if err != nil {
t.Fatalf("unexpected error generating test layer file")
}
dgst := digest.Digest(ds)
testLayers[digest.Digest(dgst)] = rs
m.FSLayers = append(m.FSLayers, schema1.FSLayer{
BlobSum: dgst,
})
m.History = append(m.History, schema1.History{
V1Compatibility: "",
})
}
pk, err := libtrust.GenerateECP256PrivateKey()
if err != nil {
t.Fatalf("unexpected error generating private key: %v", err)
}
sm, merr := schema1.Sign(&m, pk)
if merr != nil {
t.Fatalf("error signing manifest: %v", err)
}
err = ms.Put(sm)
if err == nil {
t.Fatalf("expected errors putting manifest with full verification")
}
switch err := err.(type) {
case distribution.ErrManifestVerification:
if len(err) != 2 {
t.Fatalf("expected 2 verification errors: %#v", err)
}
for _, err := range err {
if _, ok := err.(distribution.ErrManifestBlobUnknown); !ok {
t.Fatalf("unexpected error type: %v", err)
}
}
default:
t.Fatalf("unexpected error verifying manifest: %v", err)
}
// Now, upload the layers that were missing!
for dgst, rs := range testLayers {
wr, err := env.repository.Blobs(env.ctx).Create(env.ctx)
if err != nil {
t.Fatalf("unexpected error creating test upload: %v", err)
}
if _, err := io.Copy(wr, rs); err != nil {
t.Fatalf("unexpected error copying to upload: %v", err)
}
if _, err := wr.Commit(env.ctx, distribution.Descriptor{Digest: dgst}); err != nil {
t.Fatalf("unexpected error finishing upload: %v", err)
}
}
if err = ms.Put(sm); err != nil {
t.Fatalf("unexpected error putting manifest: %v", err)
}
exists, err = ms.ExistsByTag(env.tag)
if err != nil {
t.Fatalf("unexpected error checking manifest existence: %v", err)
}
if !exists {
t.Fatalf("manifest should exist")
}
fetchedManifest, err := ms.GetByTag(env.tag)
if err != nil {
t.Fatalf("unexpected error fetching manifest: %v", err)
}
if !reflect.DeepEqual(fetchedManifest, sm) {
t.Fatalf("fetched manifest not equal: %#v != %#v", fetchedManifest, sm)
}
fetchedJWS, err := libtrust.ParsePrettySignature(fetchedManifest.Raw, "signatures")
if err != nil {
t.Fatalf("unexpected error parsing jws: %v", err)
}
payload, err := fetchedJWS.Payload()
if err != nil {
t.Fatalf("unexpected error extracting payload: %v", err)
}
// Now that we have a payload, take a moment to check that the manifest is
// return by the payload digest.
dgst, err := digest.FromBytes(payload)
if err != nil {
t.Fatalf("error getting manifest digest: %v", err)
}
exists, err = ms.Exists(dgst)
if err != nil {
t.Fatalf("error checking manifest existence by digest: %v", err)
}
if !exists {
t.Fatalf("manifest %s should exist", dgst)
}
fetchedByDigest, err := ms.Get(dgst)
if err != nil {
t.Fatalf("unexpected error fetching manifest by digest: %v", err)
}
if !reflect.DeepEqual(fetchedByDigest, fetchedManifest) {
t.Fatalf("fetched manifest not equal: %#v != %#v", fetchedByDigest, fetchedManifest)
}
sigs, err := fetchedJWS.Signatures()
if err != nil {
t.Fatalf("unable to extract signatures: %v", err)
}
if len(sigs) != 1 {
t.Fatalf("unexpected number of signatures: %d != %d", len(sigs), 1)
}
// Enumerate only valid manifest revision digests
dgsts, err = ms.Enumerate()
if err != nil {
t.Errorf("unexpected error enumerating manifest revisions: %v", err)
} else if len(dgsts) != 1 {
t.Errorf("expected exactly 1 manifest, not %d", len(dgsts))
} else if dgsts[0] != dgst {
t.Errorf("got unexpected digest manifest (%s != %s)", dgsts[0], dgst)
}
// Enumerate all digests
if err := EnumerateAllDigests(ms); err != nil {
t.Fatalf("failed to configure enumeration of all digests: %v", err)
}
dgsts, err = ms.Enumerate()
if err != nil {
t.Errorf("unexpected error enumerating manifest revisions: %v", err)
} else {
// _layers contain 2 links per one tarsum blob
expCount := 1 + len(testLayers)*2
if len(dgsts) != expCount {
t.Errorf("unexpected number of returned digests (%d != %d)", len(dgsts), expCount)
}
received := make(map[digest.Digest]struct{})
for _, dgst := range dgsts {
received[dgst] = struct{}{}
}
if _, exists := received[dgst]; !exists {
t.Errorf("expected manifest revision %s to be returned", dgst.String())
}
for dgst := range testLayers {
if _, exists := received[dgst]; !exists {
t.Errorf("expected layer blob %s to be returned", dgst.String())
}
}
}
// Grabs the tags and check that this tagged manifest is present
tags, err := ms.Tags()
if err != nil {
t.Fatalf("unexpected error fetching tags: %v", err)
}
if len(tags) != 1 {
t.Fatalf("unexpected tags returned: %v", tags)
}
if tags[0] != env.tag {
t.Fatalf("unexpected tag found in tags: %v != %v", tags, []string{env.tag})
}
// Now, push the same manifest with a different key
pk2, err := libtrust.GenerateECP256PrivateKey()
if err != nil {
t.Fatalf("unexpected error generating private key: %v", err)
}
sm2, err := schema1.Sign(&m, pk2)
if err != nil {
t.Fatalf("unexpected error signing manifest: %v", err)
}
jws2, err := libtrust.ParsePrettySignature(sm2.Raw, "signatures")
if err != nil {
t.Fatalf("error parsing signature: %v", err)
}
sigs2, err := jws2.Signatures()
if err != nil {
t.Fatalf("unable to extract signatures: %v", err)
}
if len(sigs2) != 1 {
t.Fatalf("unexpected number of signatures: %d != %d", len(sigs2), 1)
}
if err = ms.Put(sm2); err != nil {
t.Fatalf("unexpected error putting manifest: %v", err)
}
fetched, err := ms.GetByTag(env.tag)
if err != nil {
t.Fatalf("unexpected error fetching manifest: %v", err)
}
if _, err := schema1.Verify(fetched); err != nil {
t.Fatalf("unexpected error verifying manifest: %v", err)
}
// Assemble our payload and two signatures to get what we expect!
expectedJWS, err := libtrust.NewJSONSignature(payload, sigs[0], sigs2[0])
if err != nil {
t.Fatalf("unexpected error merging jws: %v", err)
}
expectedSigs, err := expectedJWS.Signatures()
if err != nil {
t.Fatalf("unexpected error getting expected signatures: %v", err)
}
receivedJWS, err := libtrust.ParsePrettySignature(fetched.Raw, "signatures")
if err != nil {
t.Fatalf("unexpected error parsing jws: %v", err)
}
receivedPayload, err := receivedJWS.Payload()
if err != nil {
t.Fatalf("unexpected error extracting received payload: %v", err)
}
if !bytes.Equal(receivedPayload, payload) {
t.Fatalf("payloads are not equal")
}
receivedSigs, err := receivedJWS.Signatures()
if err != nil {
t.Fatalf("error getting signatures: %v", err)
}
for i, sig := range receivedSigs {
if !bytes.Equal(sig, expectedSigs[i]) {
t.Fatalf("mismatched signatures from remote: %v != %v", string(sig), string(expectedSigs[i]))
}
}
// Test deleting manifests
err = ms.Delete(dgst)
if err != nil {
t.Fatalf("unexpected an error deleting manifest by digest: %v", err)
}
exists, err = ms.Exists(dgst)
if err != nil {
t.Fatalf("Error querying manifest existence")
}
if exists {
t.Errorf("Deleted manifest should not exist")
}
deletedManifest, err := ms.Get(dgst)
if err == nil {
t.Errorf("Unexpected success getting deleted manifest")
}
switch err.(type) {
case distribution.ErrManifestUnknownRevision:
break
default:
t.Errorf("Unexpected error getting deleted manifest: %s", reflect.ValueOf(err).Type())
}
if deletedManifest != nil {
t.Errorf("Deleted manifest get returned non-nil")
}
// Re-upload should restore manifest to a good state
err = ms.Put(sm)
if err != nil {
t.Errorf("Error re-uploading deleted manifest")
}
exists, err = ms.Exists(dgst)
if err != nil {
t.Fatalf("Error querying manifest existence")
}
if !exists {
t.Errorf("Restored manifest should exist")
}
deletedManifest, err = ms.Get(dgst)
if err != nil {
t.Errorf("Unexpected error getting manifest")
}
if deletedManifest == nil {
t.Errorf("Deleted manifest get returned non-nil")
}
r, err := NewRegistry(ctx, env.driver, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableRedirect)
if err != nil {
t.Fatalf("error creating registry: %v", err)
}
repo, err := r.Repository(ctx, env.name)
if err != nil {
t.Fatalf("unexpected error getting repo: %v", err)
}
ms, err = repo.Manifests(ctx)
if err != nil {
t.Fatal(err)
}
err = ms.Delete(dgst)
if err == nil {
t.Errorf("Unexpected success deleting while disabled")
}
}
