Exemplo n.º 1
0
// put stores the manifest in the repository, if not already present. Any
// updated signatures will be stored, as well.
func (rs *revisionStore) put(ctx context.Context, sm *manifest.SignedManifest) (distribution.Descriptor, error) {
	// Resolve the payload in the manifest.
	payload, err := sm.Payload()
	if err != nil {
		return distribution.Descriptor{}, err
	}

	// Digest and store the manifest payload in the blob store.
	revision, err := rs.blobStore.Put(ctx, manifest.ManifestMediaType, payload)
	if err != nil {
		context.GetLogger(ctx).Errorf("error putting payload into blobstore: %v", err)
		return distribution.Descriptor{}, err
	}

	// Link the revision into the repository.
	if err := rs.blobStore.linkBlob(ctx, revision); err != nil {
		return distribution.Descriptor{}, err
	}

	// Grab each json signature and store them.
	signatures, err := sm.Signatures()
	if err != nil {
		return distribution.Descriptor{}, err
	}

	if err := rs.repository.Signatures().Put(revision.Digest, signatures...); err != nil {
		return distribution.Descriptor{}, err
	}

	return revision, nil
}
Exemplo n.º 2
0
func digestFromManifest(m *manifest.SignedManifest, localName string) (digest.Digest, int, error) {
	payload, err := m.Payload()
	if err != nil {
		// If this failed, the signatures section was corrupted
		// or missing. Treat the entire manifest as the payload.
		payload = m.Raw
	}
	manifestDigest, err := digest.FromBytes(payload)
	if err != nil {
		logrus.Infof("Could not compute manifest digest for %s:%s : %v", localName, m.Tag, err)
	}
	return manifestDigest, len(payload), nil
}
Exemplo n.º 3
0
func manifestDigest(sm *manifest.SignedManifest) (digest.Digest, error) {
	payload, err := sm.Payload()
	if err != nil {
		return "", err

	}

	dgst, err := digest.FromBytes(payload)
	if err != nil {
		return "", err
	}

	return dgst, nil
}
Exemplo n.º 4
0
func verifyManifest(signedManifest *manifest.SignedManifest, tag string) (m *manifest.Manifest, err error) {
	// If pull by digest, then verify the manifest digest. NOTE: It is
	// important to do this first, before any other content validation. If the
	// digest cannot be verified, don't even bother with those other things.
	if manifestDigest, err := digest.ParseDigest(tag); err == nil {
		verifier, err := digest.NewDigestVerifier(manifestDigest)
		if err != nil {
			return nil, err
		}
		payload, err := signedManifest.Payload()
		if err != nil {
			// If this failed, the signatures section was corrupted
			// or missing. Treat the entire manifest as the payload.
			payload = signedManifest.Raw
		}
		if _, err := verifier.Write(payload); err != nil {
			return nil, err
		}
		if !verifier.Verified() {
			err := fmt.Errorf("image verification failed for digest %s", manifestDigest)
			logrus.Error(err)
			return nil, err
		}

		var verifiedManifest manifest.Manifest
		if err = json.Unmarshal(payload, &verifiedManifest); err != nil {
			return nil, err
		}
		m = &verifiedManifest
	} else {
		m = &signedManifest.Manifest
	}

	if m.SchemaVersion != 1 {
		return nil, fmt.Errorf("unsupported schema version %d for tag %q", m.SchemaVersion, tag)
	}
	if len(m.FSLayers) != len(m.History) {
		return nil, fmt.Errorf("length of history not equal to number of layers for tag %q", tag)
	}
	if len(m.FSLayers) == 0 {
		return nil, fmt.Errorf("no FSLayers in manifest for tag %q", tag)
	}
	return m, nil
}
Exemplo n.º 5
0
// digestManifest takes a digest of the given manifest. This belongs somewhere
// better but we'll wait for a refactoring cycle to find that real somewhere.
func digestManifest(ctx context.Context, sm *manifest.SignedManifest) (digest.Digest, error) {
	p, err := sm.Payload()
	if err != nil {
		if !strings.Contains(err.Error(), "missing signature key") {
			ctxu.GetLogger(ctx).Errorf("error getting manifest payload: %v", err)
			return "", err
		}

		// NOTE(stevvooe): There are no signatures but we still have a
		// payload. The request will fail later but this is not the
		// responsibility of this part of the code.
		p = sm.Raw
	}

	dgst, err := digest.FromBytes(p)
	if err != nil {
		ctxu.GetLogger(ctx).Errorf("error digesting manifest: %v", err)
		return "", err
	}

	return dgst, err
}
Exemplo n.º 6
0
func (b *bridge) createManifestEvent(action string, repo string, sm *manifest.SignedManifest) (*Event, error) {
	event := b.createEvent(action)
	event.Target.MediaType = manifest.ManifestMediaType
	event.Target.Repository = repo

	p, err := sm.Payload()
	if err != nil {
		return nil, err
	}

	event.Target.Length = int64(len(p))
	event.Target.Size = int64(len(p))
	event.Target.Digest, err = digest.FromBytes(p)
	if err != nil {
		return nil, err
	}

	event.Target.URL, err = b.ub.BuildManifestURL(sm.Name, event.Target.Digest.String())
	if err != nil {
		return nil, err
	}

	return event, nil
}