package abi import ( "bytes" "context" "encoding/json" "os" "strings" "github.com/containers/common/libimage" cp "github.com/containers/image/v5/copy" "github.com/containers/image/v5/manifest" "github.com/containers/image/v5/pkg/shortnames" "github.com/containers/image/v5/transports" "github.com/containers/image/v5/transports/alltransports" "github.com/containers/podman/v3/pkg/domain/entities" "github.com/containers/storage" "github.com/opencontainers/go-digest" imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1" "github.com/pkg/errors" "github.com/sirupsen/logrus" ) // ManifestCreate implements logic for creating manifest lists via ImageEngine func (ir *ImageEngine) ManifestCreate(ctx context.Context, names []string, images []string, opts entities.ManifestCreateOptions) (string, error) { // FIXME: change the interface of manifest create `names []string` -> // `name string`. if len(names) == 0 { return "", errors.New("no name specified for creating a manifest list") } name := names[0] manifestList, err := ir.Libpod.LibimageRuntime().CreateManifestList(name) if err != nil { return "", err } addOptions := &libimage.ManifestListAddOptions{All: opts.All} for _, image := range images { if _, err := manifestList.Add(ctx, image, addOptions); err != nil { return "", err } } return manifestList.ID(), nil } // ManifestExists checks if a manifest list with the given name exists in local storage func (ir *ImageEngine) ManifestExists(ctx context.Context, name string) (*entities.BoolReport, error) { image, _, err := ir.Libpod.LibimageRuntime().LookupImage(name, &libimage.LookupImageOptions{IgnorePlatform: true}) if err != nil { if errors.Cause(err) == storage.ErrImageUnknown { return &entities.BoolReport{Value: false}, nil } return nil, err } isManifestList, err := image.IsManifestList(ctx) if err != nil { return nil, err } return &entities.BoolReport{Value: isManifestList}, nil } // ManifestInspect returns the content of a manifest list or image func (ir *ImageEngine) ManifestInspect(ctx context.Context, name string) ([]byte, error) { // NOTE: we have to do a bit of a limbo here as `podman manifest // inspect foo` wants to do a remote-inspect of foo iff "foo" in the // containers storage is an ordinary image but not a manifest list. manifestList, err := ir.Libpod.LibimageRuntime().LookupManifestList(name) if err != nil { switch errors.Cause(err) { // Do a remote inspect if there's no local image or if the // local image is not a manifest list. case storage.ErrImageUnknown, libimage.ErrNotAManifestList: return ir.remoteManifestInspect(ctx, name) default: return nil, err } } schema2List, err := manifestList.Inspect() if err != nil { return nil, err } rawSchema2List, err := json.Marshal(schema2List) if err != nil { return nil, err } var b bytes.Buffer if err := json.Indent(&b, rawSchema2List, "", " "); err != nil { return nil, errors.Wrapf(err, "error rendering manifest %s for display", name) } return b.Bytes(), nil } // inspect a remote manifest list. func (ir *ImageEngine) remoteManifestInspect(ctx context.Context, name string) ([]byte, error) { sys := ir.Libpod.SystemContext() resolved, err := shortnames.Resolve(sys, name) if err != nil { return nil, err } var ( latestErr error result []byte manType string b bytes.Buffer ) appendErr := func(e error) { if latestErr == nil { latestErr = e } else { latestErr = errors.Wrapf(latestErr, "tried %v\n", e) } } for _, candidate := range resolved.PullCandidates { ref, err := alltransports.ParseImageName("docker://" + candidate.Value.String()) if err != nil { return nil, err } src, err := ref.NewImageSource(ctx, sys) if err != nil { appendErr(errors.Wrapf(err, "reading image %q", transports.ImageName(ref))) continue } defer src.Close() manifestBytes, manifestType, err := src.GetManifest(ctx, nil) if err != nil { appendErr(errors.Wrapf(err, "loading manifest %q", transports.ImageName(ref))) continue } result = manifestBytes manType = manifestType break } if len(result) == 0 && latestErr != nil { return nil, latestErr } switch manType { case manifest.DockerV2Schema2MediaType: logrus.Warnf("Warning! The manifest type %s is not a manifest list but a single image.", manType) schema2Manifest, err := manifest.Schema2FromManifest(result) if err != nil { return nil, errors.Wrapf(err, "error parsing manifest blob %q as a %q", string(result), manType) } if result, err = schema2Manifest.Serialize(); err != nil { return nil, err } default: listBlob, err := manifest.ListFromBlob(result, manType) if err != nil { return nil, errors.Wrapf(err, "error parsing manifest blob %q as a %q", string(result), manType) } list, err := listBlob.ConvertToMIMEType(manifest.DockerV2ListMediaType) if err != nil { return nil, err } if result, err = list.Serialize(); err != nil { return nil, err } } if err = json.Indent(&b, result, "", " "); err != nil { return nil, errors.Wrapf(err, "error rendering manifest %s for display", name) } return b.Bytes(), nil } // ManifestAdd adds images to the manifest list func (ir *ImageEngine) ManifestAdd(ctx context.Context, opts entities.ManifestAddOptions) (string, error) { // FIXME: the name options below are *mandatory* arguments and should // be reflected as such in the signature. if len(opts.Images) < 2 { return "", errors.New("manifest add requires two images") } imageName := opts.Images[0] listName := opts.Images[1] manifestList, err := ir.Libpod.LibimageRuntime().LookupManifestList(listName) if err != nil { return "", err } addOptions := &libimage.ManifestListAddOptions{ All: opts.All, AuthFilePath: opts.Authfile, CertDirPath: opts.CertDir, InsecureSkipTLSVerify: opts.SkipTLSVerify, Username: opts.Username, Password: opts.Password, } instanceDigest, err := manifestList.Add(ctx, imageName, addOptions) if err != nil { return "", err } annotateOptions := &libimage.ManifestListAnnotateOptions{ Architecture: opts.Arch, Features: opts.Features, OS: opts.OS, OSVersion: opts.OSVersion, Variant: opts.Variant, } if len(opts.Annotation) != 0 { annotations := make(map[string]string) for _, annotationSpec := range opts.Annotation { spec := strings.SplitN(annotationSpec, "=", 2) if len(spec) != 2 { return "", errors.Errorf("no value given for annotation %q", spec[0]) } annotations[spec[0]] = spec[1] } annotateOptions.Annotations = annotations } if err := manifestList.AnnotateInstance(instanceDigest, annotateOptions); err != nil { return "", err } return manifestList.ID(), nil } // ManifestAnnotate updates an entry of the manifest list func (ir *ImageEngine) ManifestAnnotate(ctx context.Context, names []string, opts entities.ManifestAnnotateOptions) (string, error) { // FIXME: the `names` are *mandatory* arguments and should be // reflected as such in the signature. if len(names) < 2 { return "", errors.New("manifest annotate requires two names") } listName := names[0] instanceDigest, err := digest.Parse(names[1]) if err != nil { return "", errors.Errorf(`invalid image digest "%s": %v`, names[1], err) } manifestList, err := ir.Libpod.LibimageRuntime().LookupManifestList(listName) if err != nil { return "", err } annotateOptions := &libimage.ManifestListAnnotateOptions{ Architecture: opts.Arch, Features: opts.Features, OS: opts.OS, OSVersion: opts.OSVersion, Variant: opts.Variant, } if len(opts.Annotation) != 0 { annotations := make(map[string]string) for _, annotationSpec := range opts.Annotation { spec := strings.SplitN(annotationSpec, "=", 2) if len(spec) != 2 { return "", errors.Errorf("no value given for annotation %q", spec[0]) } annotations[spec[0]] = spec[1] } annotateOptions.Annotations = annotations } if err := manifestList.AnnotateInstance(instanceDigest, annotateOptions); err != nil { return "", err } return manifestList.ID(), nil } // ManifestRemove removes specified digest from the specified manifest list func (ir *ImageEngine) ManifestRemove(ctx context.Context, names []string) (string, error) { // FIXME: the `names` are *mandatory* arguments and should be // reflected as such in the signature. if len(names) < 2 { return "", errors.New("manifest remove requires two names") } listName := names[0] instanceDigest, err := digest.Parse(names[1]) if err != nil { return "", errors.Errorf(`invalid image digest "%s": %v`, names[1], err) } manifestList, err := ir.Libpod.LibimageRuntime().LookupManifestList(listName) if err != nil { return "", err } if err := manifestList.RemoveInstance(instanceDigest); err != nil { return "", err } return manifestList.ID(), nil } // ManifestRm removes the specified manifest list from storage func (ir *ImageEngine) ManifestRm(ctx context.Context, names []string) (report *entities.ImageRemoveReport, rmErrors []error) { return ir.Remove(ctx, names, entities.ImageRemoveOptions{}) } // ManifestPush pushes a manifest list or image index to the destination func (ir *ImageEngine) ManifestPush(ctx context.Context, name, destination string, opts entities.ImagePushOptions) (string, error) { manifestList, err := ir.Libpod.LibimageRuntime().LookupManifestList(name) if err != nil { return "", errors.Wrapf(err, "error retrieving local image from image name %s", name) } var manifestType string if opts.Format != "" { switch opts.Format { case "oci": manifestType = imgspecv1.MediaTypeImageManifest case "v2s2", "docker": manifestType = manifest.DockerV2Schema2MediaType default: return "", errors.Errorf("unknown format %q. Choose one of the supported formats: 'oci' or 'v2s2'", opts.Format) } } pushOptions := &libimage.ManifestListPushOptions{} pushOptions.AuthFilePath = opts.Authfile pushOptions.CertDirPath = opts.CertDir pushOptions.Username = opts.Username pushOptions.Password = opts.Password pushOptions.ImageListSelection = cp.CopySpecificImages pushOptions.ManifestMIMEType = manifestType pushOptions.RemoveSignatures = opts.RemoveSignatures pushOptions.SignBy = opts.SignBy if opts.All { pushOptions.ImageListSelection = cp.CopyAllImages } if !opts.Quiet { pushOptions.Writer = os.Stderr } manDigest, err := manifestList.Push(ctx, destination, pushOptions) if err != nil { return "", err } if opts.Rm { if _, rmErrors := ir.Libpod.LibimageRuntime().RemoveImages(ctx, []string{manifestList.ID()}, nil); len(rmErrors) > 0 { return "", errors.Wrap(rmErrors[0], "error removing manifest after push") } } return manDigest.String(), err }