// Add adds an image to the image cache
func (ic *ICache) Add(imageConfig *metadata.ImageConfig) {
defer trace.End(trace.Begin(""))
ic.m.Lock()
defer ic.m.Unlock()
// Normalize the name stored in imageConfig using Docker's reference code
ref, err := reference.WithName(imageConfig.Name)
if err != nil {
log.Errorf("Tried to create reference from %s: %s", imageConfig.Name, err.Error())
return
}
imageID := prefixImageID(imageConfig.ImageID)
ic.iDIndex.Add(imageConfig.ImageID)
ic.cacheByID[imageID] = imageConfig
for _, tag := range imageConfig.Tags {
ref, err = reference.WithTag(ref, tag)
if err != nil {
log.Errorf("Tried to create tagged reference from %s and tag %s: %s", imageConfig.Name, tag, err.Error())
return
}
ic.cacheByName[imageConfig.Reference] = imageConfig
}
}
// PullImage initiates a pull operation. image is the repository name to pull, and
// tag may be either empty, or indicate a specific tag to pull.
func (daemon *Daemon) PullImage(ctx context.Context, image, tag string, metaHeaders map[string][]string, authConfig *types.AuthConfig, outStream io.Writer) error {
// Special case: "pull -a" may send an image name with a
// trailing :. This is ugly, but let's not break API
// compatibility.
image = strings.TrimSuffix(image, ":")
ref, err := reference.ParseNamed(image)
if err != nil {
return err
}
if tag != "" {
// The "tag" could actually be a digest.
var dgst digest.Digest
dgst, err = digest.ParseDigest(tag)
if err == nil {
ref, err = reference.WithDigest(ref, dgst)
} else {
ref, err = reference.WithTag(ref, tag)
}
if err != nil {
return err
}
}
return daemon.pullImageWithReference(ctx, ref, metaHeaders, authConfig, outStream)
}
// sanitizeRepoAndTags parses the raw "t" parameter received from the client
// to a slice of repoAndTag.
// It also validates each repoName and tag.
func sanitizeRepoAndTags(names []string) ([]reference.Named, error) {
var (
repoAndTags []reference.Named
// This map is used for deduplicating the "-t" parameter.
uniqNames = make(map[string]struct{})
)
for _, repo := range names {
if repo == "" {
continue
}
ref, err := reference.ParseNamed(repo)
if err != nil {
return nil, err
}
ref = reference.WithDefaultTag(ref)
if _, isCanonical := ref.(reference.Canonical); isCanonical {
return nil, errors.New("build tag cannot contain a digest")
}
if _, isTagged := ref.(reference.NamedTagged); !isTagged {
ref, err = reference.WithTag(ref, reference.DefaultTag)
}
nameWithTag := ref.String()
if _, exists := uniqNames[nameWithTag]; !exists {
uniqNames[nameWithTag] = struct{}{}
repoAndTags = append(repoAndTags, ref)
}
}
return repoAndTags, nil
}
func pullImage(client client.APIClient, service *Service, image string) error {
distributionRef, err := reference.ParseNamed(image)
if err != nil {
return err
}
switch distributionRef.(type) {
case reference.Canonical:
case reference.NamedTagged:
default:
distributionRef, err = reference.WithTag(distributionRef, "latest")
if err != nil {
return err
}
}
repoInfo, err := registry.ParseRepositoryInfo(distributionRef)
if err != nil {
return err
}
authConfig := types.AuthConfig{}
if service.context.ConfigFile != nil && repoInfo != nil && repoInfo.Index != nil {
authConfig = registry.ResolveAuthConfig(service.context.ConfigFile.AuthConfigs, repoInfo.Index)
}
encodedAuth, err := encodeAuthToBase64(authConfig)
if err != nil {
return err
}
options := types.ImagePullOptions{
RegistryAuth: encodedAuth,
}
responseBody, err := client.ImagePull(context.Background(), distributionRef.String(), options)
if err != nil {
logrus.Errorf("Failed to pull image %s: %v", image, err)
return err
}
defer responseBody.Close()
var writeBuff io.Writer = os.Stdout
outFd, isTerminalOut := term.GetFdInfo(os.Stdout)
err = jsonmessage.DisplayJSONMessagesStream(responseBody, writeBuff, outFd, isTerminalOut, nil)
if err != nil {
if jerr, ok := err.(*jsonmessage.JSONError); ok {
// If no error code is set, default to 1
if jerr.Code == 0 {
jerr.Code = 1
}
fmt.Fprintf(os.Stderr, "%s", writeBuff)
return fmt.Errorf("Status: %s, Code: %d", jerr.Message, jerr.Code)
}
}
return err
}
func testTokenPassThru(t *testing.T, ts *httptest.Server) {
tmp, err := testDirectory("")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmp)
uri, err := url.Parse(ts.URL)
if err != nil {
t.Fatalf("could not parse url from test server: %v", err)
}
endpoint := registry.APIEndpoint{
Mirror: false,
URL: uri,
Version: 2,
Official: false,
TrimHostname: false,
TLSConfig: nil,
//VersionHeader: "verheader",
}
n, _ := reference.ParseNamed("testremotename")
repoInfo := ®istry.RepositoryInfo{
Named: n,
Index: ®istrytypes.IndexInfo{
Name: "testrepo",
Mirrors: nil,
Secure: false,
Official: false,
},
Official: false,
}
imagePullConfig := &ImagePullConfig{
Config: Config{
MetaHeaders: http.Header{},
AuthConfig: &types.AuthConfig{
RegistryToken: secretRegistryToken,
},
},
Schema2Types: ImageTypes,
}
puller, err := newPuller(endpoint, repoInfo, imagePullConfig)
if err != nil {
t.Fatal(err)
}
p := puller.(*v2Puller)
ctx := context.Background()
p.repo, _, err = NewV2Repository(ctx, p.repoInfo, p.endpoint, p.config.MetaHeaders, p.config.AuthConfig, "pull")
if err != nil {
t.Fatal(err)
}
logrus.Debug("About to pull")
// We expect it to fail, since we haven't mock'd the full registry exchange in our handler above
tag, _ := reference.WithTag(n, "tag_goes_here")
_ = p.pullV2Repository(ctx, tag)
}
func (l *tarexporter) legacyLoad(tmpDir string, outStream io.Writer, progressOutput progress.Output) error {
legacyLoadedMap := make(map[string]image.ID)
dirs, err := ioutil.ReadDir(tmpDir)
if err != nil {
return err
}
// every dir represents an image
for _, d := range dirs {
if d.IsDir() {
if err := l.legacyLoadImage(d.Name(), tmpDir, legacyLoadedMap, progressOutput); err != nil {
return err
}
}
}
// load tags from repositories file
repositoriesPath, err := safePath(tmpDir, legacyRepositoriesFileName)
if err != nil {
return err
}
repositoriesFile, err := os.Open(repositoriesPath)
if err != nil {
if !os.IsNotExist(err) {
return err
}
return repositoriesFile.Close()
}
defer repositoriesFile.Close()
repositories := make(map[string]map[string]string)
if err := json.NewDecoder(repositoriesFile).Decode(&repositories); err != nil {
return err
}
for name, tagMap := range repositories {
for tag, oldID := range tagMap {
imgID, ok := legacyLoadedMap[oldID]
if !ok {
return fmt.Errorf("invalid target ID: %v", oldID)
}
named, err := reference.WithName(name)
if err != nil {
return err
}
ref, err := reference.WithTag(named, tag)
if err != nil {
return err
}
l.setLoadedTag(ref, imgID, outStream)
}
}
return nil
}
func (s *router) postImagesPush(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
metaHeaders := map[string][]string{}
for k, v := range r.Header {
if strings.HasPrefix(k, "X-Meta-") {
metaHeaders[k] = v
}
}
if err := httputils.ParseForm(r); err != nil {
return err
}
authConfig := &types.AuthConfig{}
authEncoded := r.Header.Get("X-Registry-Auth")
if authEncoded != "" {
// the new format is to handle the authConfig as a header
authJSON := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authEncoded))
if err := json.NewDecoder(authJSON).Decode(authConfig); err != nil {
// to increase compatibility to existing api it is defaulting to be empty
authConfig = &types.AuthConfig{}
}
} else {
// the old format is supported for compatibility if there was no authConfig header
if err := json.NewDecoder(r.Body).Decode(authConfig); err != nil {
return fmt.Errorf("Bad parameters and missing X-Registry-Auth: %v", err)
}
}
ref, err := reference.ParseNamed(vars["name"])
if err != nil {
return err
}
tag := r.Form.Get("tag")
if tag != "" {
// Push by digest is not supported, so only tags are supported.
ref, err = reference.WithTag(ref, tag)
if err != nil {
return err
}
}
output := ioutils.NewWriteFlusher(w)
defer output.Close()
w.Header().Set("Content-Type", "application/json")
if err := s.daemon.PushImage(ref, metaHeaders, authConfig, output); err != nil {
if !output.Flushed() {
return err
}
sf := streamformatter.NewJSONStreamFormatter()
output.Write(sf.FormatError(err))
}
return nil
}
func (p *v2Puller) pullV2Repository(ctx context.Context, ref reference.Named) (err error) {
var layersDownloaded bool
if !reference.IsNameOnly(ref) {
var err error
layersDownloaded, err = p.pullV2Tag(ctx, ref)
if err != nil {
return err
}
} else {
manSvc, err := p.repo.Manifests(ctx)
if err != nil {
return err
}
tags, err := manSvc.Tags()
if err != nil {
// If this repository doesn't exist on V2, we should
// permit a fallback to V1.
return allowV1Fallback(err)
}
// The v2 registry knows about this repository, so we will not
// allow fallback to the v1 protocol even if we encounter an
// error later on.
p.confirmedV2 = true
// This probably becomes a lot nicer after the manifest
// refactor...
for _, tag := range tags {
tagRef, err := reference.WithTag(ref, tag)
if err != nil {
return err
}
pulledNew, err := p.pullV2Tag(ctx, tagRef)
if err != nil {
// Since this is the pull-all-tags case, don't
// allow an error pulling a particular tag to
// make the whole pull fall back to v1.
if fallbackErr, ok := err.(fallbackError); ok {
return fallbackErr.err
}
return err
}
// pulledNew is true if either new layers were downloaded OR if existing images were newly tagged
// TODO(tiborvass): should we change the name of `layersDownload`? What about message in WriteStatus?
layersDownloaded = layersDownloaded || pulledNew
}
}
writeStatus(ref.String(), p.config.ProgressOutput, layersDownloaded)
return nil
}
func (p *v1Puller) downloadImage(ctx context.Context, repoData *registry.RepositoryData, img *registry.ImgData, layersDownloaded *bool) error {
if img.Tag == "" {
logrus.Debugf("Image (id: %s) present in this repository but untagged, skipping", img.ID)
return nil
}
localNameRef, err := reference.WithTag(p.repoInfo, img.Tag)
if err != nil {
retErr := fmt.Errorf("Image (id: %s) has invalid tag: %s", img.ID, img.Tag)
logrus.Debug(retErr.Error())
return retErr
}
if err := v1.ValidateID(img.ID); err != nil {
return err
}
progress.Updatef(p.config.ProgressOutput, stringid.TruncateID(img.ID), "Pulling image (%s) from %s", img.Tag, p.repoInfo.FullName())
success := false
var lastErr error
for _, ep := range p.repoInfo.Index.Mirrors {
ep += "v1/"
progress.Updatef(p.config.ProgressOutput, stringid.TruncateID(img.ID), fmt.Sprintf("Pulling image (%s) from %s, mirror: %s", img.Tag, p.repoInfo.FullName(), ep))
if err = p.pullImage(ctx, img.ID, ep, localNameRef, layersDownloaded); err != nil {
// Don't report errors when pulling from mirrors.
logrus.Debugf("Error pulling image (%s) from %s, mirror: %s, %s", img.Tag, p.repoInfo.FullName(), ep, err)
continue
}
success = true
break
}
if !success {
for _, ep := range repoData.Endpoints {
progress.Updatef(p.config.ProgressOutput, stringid.TruncateID(img.ID), "Pulling image (%s) from %s, endpoint: %s", img.Tag, p.repoInfo.FullName(), ep)
if err = p.pullImage(ctx, img.ID, ep, localNameRef, layersDownloaded); err != nil {
// It's not ideal that only the last error is returned, it would be better to concatenate the errors.
// As the error is also given to the output stream the user will see the error.
lastErr = err
progress.Updatef(p.config.ProgressOutput, stringid.TruncateID(img.ID), "Error pulling image (%s) from %s, endpoint: %s, %s", img.Tag, p.repoInfo.FullName(), ep, err)
continue
}
success = true
break
}
}
if !success {
err := fmt.Errorf("Error pulling image (%s) from %s, %v", img.Tag, p.repoInfo.FullName(), lastErr)
progress.Update(p.config.ProgressOutput, stringid.TruncateID(img.ID), err.Error())
return err
}
return nil
}
// PushImage initiates a push operation on the repository named localName.
func (daemon *Daemon) PushImage(ctx context.Context, image, tag string, metaHeaders map[string][]string, authConfig *types.AuthConfig, outStream io.Writer) error {
ref, err := reference.ParseNamed(image)
if err != nil {
return err
}
if tag != "" {
// Push by digest is not supported, so only tags are supported.
ref, err = reference.WithTag(ref, tag)
if err != nil {
return err
}
}
// Include a buffer so that slow client connections don't affect
// transfer performance.
progressChan := make(chan progress.Progress, 100)
writesDone := make(chan struct{})
ctx, cancelFunc := context.WithCancel(ctx)
go func() {
writeDistributionProgress(cancelFunc, outStream, progressChan)
close(writesDone)
}()
imagePushConfig := &distribution.ImagePushConfig{
Config: distribution.Config{
MetaHeaders: metaHeaders,
AuthConfig: authConfig,
ProgressOutput: progress.ChanOutput(progressChan),
RegistryService: daemon.RegistryService,
ImageEventLogger: daemon.LogImageEvent,
MetadataStore: daemon.distributionMetadataStore,
ImageStore: distribution.NewImageConfigStoreFromStore(daemon.imageStore),
ReferenceStore: daemon.referenceStore,
},
ConfigMediaType: schema2.MediaTypeImageConfig,
LayerStore: distribution.NewLayerProviderFromStore(daemon.layerStore),
TrustKey: daemon.trustKey,
UploadManager: daemon.uploadManager,
}
err = distribution.Push(ctx, ref, imagePushConfig)
close(progressChan)
<-writesDone
return err
}
func (p *v2Puller) pullV2Repository(ctx context.Context, ref reference.Named) (err error) {
var refs []reference.Named
if !reference.IsNameOnly(ref) {
refs = []reference.Named{ref}
} else {
manSvc, err := p.repo.Manifests(ctx)
if err != nil {
return err
}
tags, err := manSvc.Tags()
if err != nil {
return err
}
// If this call succeeded, we can be confident that the
// registry on the other side speaks the v2 protocol.
p.confirmedV2 = true
// This probably becomes a lot nicer after the manifest
// refactor...
for _, tag := range tags {
tagRef, err := reference.WithTag(ref, tag)
if err != nil {
return err
}
refs = append(refs, tagRef)
}
}
var layersDownloaded bool
for _, pullRef := range refs {
// pulledNew is true if either new layers were downloaded OR if existing images were newly tagged
// TODO(tiborvass): should we change the name of `layersDownload`? What about message in WriteStatus?
pulledNew, err := p.pullV2Tag(ctx, pullRef)
if err != nil {
return err
}
layersDownloaded = layersDownloaded || pulledNew
}
writeStatus(ref.String(), p.config.ProgressOutput, layersDownloaded)
return nil
}
// TagImage creates the tag specified by newTag, pointing to the image named
// imageName (alternatively, imageName can also be an image ID).
func (daemon *Daemon) TagImage(imageName, repository, tag string) error {
imageID, err := daemon.GetImageID(imageName)
if err != nil {
return err
}
newTag, err := reference.WithName(repository)
if err != nil {
return err
}
if tag != "" {
if newTag, err = reference.WithTag(newTag, tag); err != nil {
return err
}
}
return daemon.TagImageWithReference(imageID, newTag)
}
// AddImage adds an image to the image cache
func (ic *ICache) AddImage(imageConfig *metadata.ImageConfig) {
ic.m.Lock()
defer ic.m.Unlock()
var imageID string
// Don't assume the image id in image has "sha256:<id> as format. We store it in
// this fomat to make it easier to lookup by digest
if strings.HasPrefix(imageConfig.ImageID, "sha") {
imageID = imageConfig.ImageID
} else {
imageID = "sha256:" + imageConfig.ImageID
}
// add image id to truncindex
ic.idIndex.Add(imageConfig.ImageID)
ic.cacheByID[imageID] = imageConfig
// Normalize the name stored in imageConfig using Docker's reference code
ref, err := reference.WithName(imageConfig.Name)
if err != nil {
log.Errorf("Tried to create reference from %s: %s", imageConfig.Name, err.Error())
return
}
for _, tag := range imageConfig.Tags {
ref, err = reference.WithTag(ref, tag)
if err != nil {
log.Errorf("Tried to create tagged reference from %s and tag %s: %s", imageConfig.Name, tag, err.Error())
return
}
if tagged, ok := ref.(reference.NamedTagged); ok {
taggedName := fmt.Sprintf("%s:%s", tagged.Name(), tagged.Tag())
ic.cacheByName[taggedName] = imageConfig
} else {
ic.cacheByName[ref.Name()] = imageConfig
}
}
}
func (daemon *Daemon) CmdImagePush(repo, tag string, authConfig *types.AuthConfig, metaHeaders map[string][]string, output io.Writer) error {
// Special case: "pull -a" may send an image name with a
// trailing :. This is ugly, but let's not break API
// compatibility.
repo = strings.TrimSuffix(repo, ":")
var ref reference.Named
ref, err := reference.ParseNamed(repo)
if err != nil {
return err
}
if tag != "" {
ref, err = reference.WithTag(ref, tag)
if err != nil {
return err
}
}
return daemon.Daemon.PushImage(ref, metaHeaders, authConfig, output)
}
func (s *router) postImagesTag(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := httputils.ParseForm(r); err != nil {
return err
}
repo := r.Form.Get("repo")
tag := r.Form.Get("tag")
newTag, err := reference.WithName(repo)
if err != nil {
return err
}
if tag != "" {
if newTag, err = reference.WithTag(newTag, tag); err != nil {
return err
}
}
if err := s.daemon.TagImage(newTag, vars["name"]); err != nil {
return err
}
w.WriteHeader(http.StatusCreated)
return nil
}
// parseRemoteRef parses the remote reference into a reference.Named
// returning the tag associated with the reference. In the case the
// given reference string includes both digest and tag, the returned
// reference will have the digest without the tag, but the tag will
// be returned.
func parseRemoteRef(remote string) (reference.Named, string, error) {
// Parse remote reference, supporting remotes with name and tag
// NOTE: Using distribution reference to handle references
// containing both a name and digest
remoteRef, err := distreference.ParseNamed(remote)
if err != nil {
return nil, "", err
}
var tag string
if t, ok := remoteRef.(distreference.Tagged); ok {
tag = t.Tag()
}
// Convert distribution reference to docker reference
// TODO: remove when docker reference changes reconciled upstream
ref, err := reference.WithName(remoteRef.Name())
if err != nil {
return nil, "", err
}
if d, ok := remoteRef.(distreference.Digested); ok {
ref, err = reference.WithDigest(ref, d.Digest())
if err != nil {
return nil, "", err
}
} else if tag != "" {
ref, err = reference.WithTag(ref, tag)
if err != nil {
return nil, "", err
}
} else {
ref = reference.WithDefaultTag(ref)
}
return ref, tag, nil
}
// ImportImage imports an image, getting the archived layer data either from
// inConfig (if src is "-"), or from a URI specified in src. Progress output is
// written to outStream. Repository and tag names can optionally be given in
// the repo and tag arguments, respectively.
func (daemon *Daemon) ImportImage(src string, repository, tag string, msg string, inConfig io.ReadCloser, outStream io.Writer, changes []string) error {
var (
sf = streamformatter.NewJSONStreamFormatter()
rc io.ReadCloser
resp *http.Response
newRef reference.Named
)
if repository != "" {
var err error
newRef, err = reference.ParseNamed(repository)
if err != nil {
return err
}
if _, isCanonical := newRef.(reference.Canonical); isCanonical {
return errors.New("cannot import digest reference")
}
if tag != "" {
newRef, err = reference.WithTag(newRef, tag)
if err != nil {
return err
}
}
}
config, err := dockerfile.BuildFromConfig(&container.Config{}, changes)
if err != nil {
return err
}
if src == "-" {
rc = inConfig
} else {
inConfig.Close()
u, err := url.Parse(src)
if err != nil {
return err
}
if u.Scheme == "" {
u.Scheme = "http"
u.Host = src
u.Path = ""
}
outStream.Write(sf.FormatStatus("", "Downloading from %s", u))
resp, err = httputils.Download(u.String())
if err != nil {
return err
}
progressOutput := sf.NewProgressOutput(outStream, true)
rc = progress.NewProgressReader(resp.Body, progressOutput, resp.ContentLength, "", "Importing")
}
defer rc.Close()
if len(msg) == 0 {
msg = "Imported from " + src
}
inflatedLayerData, err := archive.DecompressStream(rc)
if err != nil {
return err
}
// TODO: support windows baselayer?
l, err := daemon.layerStore.Register(inflatedLayerData, "")
if err != nil {
return err
}
defer layer.ReleaseAndLog(daemon.layerStore, l)
created := time.Now().UTC()
imgConfig, err := json.Marshal(&image.Image{
V1Image: image.V1Image{
DockerVersion: dockerversion.Version,
Config: config,
Architecture: runtime.GOARCH,
OS: runtime.GOOS,
Created: created,
Comment: msg,
},
RootFS: &image.RootFS{
Type: "layers",
DiffIDs: []layer.DiffID{l.DiffID()},
},
History: []image.History{{
Created: created,
Comment: msg,
}},
})
if err != nil {
return err
}
id, err := daemon.imageStore.Create(imgConfig)
if err != nil {
return err
}
// FIXME: connect with commit code and call refstore directly
if newRef != nil {
if err := daemon.TagImageWithReference(id, newRef); err != nil {
return err
}
}
daemon.LogImageEvent(id.String(), id.String(), "import")
outStream.Write(sf.FormatStatus("", id.String()))
return nil
}
func migrateRefs(root, driverName string, rs refAdder, mappings map[string]image.ID) error {
migrationFile := filepath.Join(root, migrationTagsFileName)
if _, err := os.Lstat(migrationFile); !os.IsNotExist(err) {
return err
}
type repositories struct {
Repositories map[string]map[string]string
}
var repos repositories
f, err := os.Open(filepath.Join(root, repositoriesFilePrefixLegacy+driverName))
if err != nil {
if os.IsNotExist(err) {
return nil
}
return err
}
defer f.Close()
if err := json.NewDecoder(f).Decode(&repos); err != nil {
return err
}
for name, repo := range repos.Repositories {
for tag, id := range repo {
if strongID, exists := mappings[id]; exists {
ref, err := reference.WithName(name)
if err != nil {
logrus.Errorf("migrate tags: invalid name %q, %q", name, err)
continue
}
if dgst, err := digest.ParseDigest(tag); err == nil {
canonical, err := reference.WithDigest(ref, dgst)
if err != nil {
logrus.Errorf("migrate tags: invalid digest %q, %q", dgst, err)
continue
}
if err := rs.AddDigest(canonical, strongID, false); err != nil {
logrus.Errorf("can't migrate digest %q for %q, err: %q", ref.String(), strongID, err)
}
} else {
tagRef, err := reference.WithTag(ref, tag)
if err != nil {
logrus.Errorf("migrate tags: invalid tag %q, %q", tag, err)
continue
}
if err := rs.AddTag(tagRef, strongID, false); err != nil {
logrus.Errorf("can't migrate tag %q for %q, err: %q", ref.String(), strongID, err)
}
}
logrus.Infof("migrated tag %s:%s to point to %s", name, tag, strongID)
}
}
}
mf, err := os.Create(migrationFile)
if err != nil {
return err
}
mf.Close()
return nil
}
func (l *tarexporter) parseNames(names []string) (map[image.ID]*imageDescriptor, error) {
imgDescr := make(map[image.ID]*imageDescriptor)
addAssoc := func(id image.ID, ref reference.Named) {
if _, ok := imgDescr[id]; !ok {
imgDescr[id] = &imageDescriptor{}
}
if ref != nil {
var tagged reference.NamedTagged
if _, ok := ref.(reference.Canonical); ok {
return
}
var ok bool
if tagged, ok = ref.(reference.NamedTagged); !ok {
var err error
if tagged, err = reference.WithTag(ref, reference.DefaultTag); err != nil {
return
}
}
for _, t := range imgDescr[id].refs {
if tagged.String() == t.String() {
return
}
}
imgDescr[id].refs = append(imgDescr[id].refs, tagged)
}
}
for _, name := range names {
id, ref, err := reference.ParseIDOrReference(name)
if err != nil {
return nil, err
}
if id != "" {
_, err := l.is.Get(image.ID(id))
if err != nil {
return nil, err
}
addAssoc(image.ID(id), nil)
continue
}
if ref.Name() == string(digest.Canonical) {
imgID, err := l.is.Search(name)
if err != nil {
return nil, err
}
addAssoc(imgID, nil)
continue
}
if reference.IsNameOnly(ref) {
assocs := l.rs.ReferencesByName(ref)
for _, assoc := range assocs {
addAssoc(assoc.ImageID, assoc.Ref)
}
if len(assocs) == 0 {
imgID, err := l.is.Search(name)
if err != nil {
return nil, err
}
addAssoc(imgID, nil)
}
continue
}
var imgID image.ID
if imgID, err = l.rs.Get(ref); err != nil {
return nil, err
}
addAssoc(imgID, ref)
}
return imgDescr, nil
}
func (cli *DockerCli) trustedPull(repoInfo *registry.RepositoryInfo, ref registry.Reference, authConfig types.AuthConfig, requestPrivilege apiclient.RequestPrivilegeFunc) error {
var refs []target
notaryRepo, err := cli.getNotaryRepository(repoInfo, authConfig)
if err != nil {
fmt.Fprintf(cli.out, "Error establishing connection to trust repository: %s\n", err)
return err
}
if ref.String() == "" {
// List all targets
targets, err := notaryRepo.ListTargets(releasesRole, data.CanonicalTargetsRole)
if err != nil {
return notaryError(repoInfo.FullName(), err)
}
for _, tgt := range targets {
t, err := convertTarget(tgt.Target)
if err != nil {
fmt.Fprintf(cli.out, "Skipping target for %q\n", repoInfo.Name())
continue
}
refs = append(refs, t)
}
} else {
t, err := notaryRepo.GetTargetByName(ref.String(), releasesRole, data.CanonicalTargetsRole)
if err != nil {
return notaryError(repoInfo.FullName(), err)
}
r, err := convertTarget(t.Target)
if err != nil {
return err
}
refs = append(refs, r)
}
for i, r := range refs {
displayTag := r.reference.String()
if displayTag != "" {
displayTag = ":" + displayTag
}
fmt.Fprintf(cli.out, "Pull (%d of %d): %s%s@%s\n", i+1, len(refs), repoInfo.Name(), displayTag, r.digest)
if err := cli.imagePullPrivileged(authConfig, repoInfo.Name(), r.digest.String(), requestPrivilege); err != nil {
return err
}
// If reference is not trusted, tag by trusted reference
if !r.reference.HasDigest() {
tagged, err := reference.WithTag(repoInfo, r.reference.String())
if err != nil {
return err
}
trustedRef, err := reference.WithDigest(repoInfo, r.digest)
if err != nil {
return err
}
if err := cli.tagTrusted(trustedRef, tagged); err != nil {
return err
}
}
}
return nil
}
func runInstall(dockerCli *command.DockerCli, opts pluginOptions) error {
// Parse name using distribution reference package to support name
// containing both tag and digest. Names with both tag and digest
// will be treated by the daemon as a pull by digest with
// an alias for the tag (if no alias is provided).
ref, err := distreference.ParseNamed(opts.name)
if err != nil {
return err
}
alias := ""
if opts.alias != "" {
aref, err := reference.ParseNamed(opts.alias)
if err != nil {
return err
}
aref = reference.WithDefaultTag(aref)
if _, ok := aref.(reference.NamedTagged); !ok {
return fmt.Errorf("invalid name: %s", opts.alias)
}
alias = aref.String()
}
ctx := context.Background()
index, err := getRepoIndexFromUnnormalizedRef(ref)
if err != nil {
return err
}
remote := ref.String()
_, isCanonical := ref.(distreference.Canonical)
if command.IsTrusted() && !isCanonical {
if alias == "" {
alias = ref.String()
}
var nt reference.NamedTagged
named, err := reference.ParseNamed(ref.Name())
if err != nil {
return err
}
if tagged, ok := ref.(distreference.Tagged); ok {
nt, err = reference.WithTag(named, tagged.Tag())
if err != nil {
return err
}
} else {
named = reference.WithDefaultTag(named)
nt = named.(reference.NamedTagged)
}
trusted, err := image.TrustedReference(ctx, dockerCli, nt, newRegistryService())
if err != nil {
return err
}
remote = trusted.String()
}
authConfig := command.ResolveAuthConfig(ctx, dockerCli, index)
encodedAuth, err := command.EncodeAuthToBase64(authConfig)
if err != nil {
return err
}
registryAuthFunc := command.RegistryAuthenticationPrivilegedFunc(dockerCli, index, "plugin install")
options := types.PluginInstallOptions{
RegistryAuth: encodedAuth,
RemoteRef: remote,
Disabled: opts.disable,
AcceptAllPermissions: opts.grantPerms,
AcceptPermissionsFunc: acceptPrivileges(dockerCli, opts.name),
// TODO: Rename PrivilegeFunc, it has nothing to do with privileges
PrivilegeFunc: registryAuthFunc,
Args: opts.args,
}
responseBody, err := dockerCli.Client().PluginInstall(ctx, alias, options)
if err != nil {
if strings.Contains(err.Error(), "target is image") {
return errors.New(err.Error() + " - Use `docker image pull`")
}
return err
}
defer responseBody.Close()
if err := jsonmessage.DisplayJSONMessagesToStream(responseBody, dockerCli.Out(), nil); err != nil {
return err
}
fmt.Fprintf(dockerCli.Out(), "Installed plugin %s\n", opts.name) // todo: return proper values from the API for this result
return nil
}
// Update adds new images to the cache
func (c *ImageCache) Update(client *client.PortLayer) error {
c.m.Lock()
defer c.m.Unlock()
CacheNotUpdated = true
log.Debugf("Updating image cache...")
host, err := guest.UUID()
if host == "" {
host, err = os.Hostname()
}
if err != nil {
return fmt.Errorf("Unexpected error getting hostname: %s", err)
}
// attempt to create the image store if it doesn't exist
store := &models.ImageStore{Name: host}
_, err = client.Storage.CreateImageStore(
storage.NewCreateImageStoreParams().WithBody(store),
)
if err != nil {
if _, ok := err.(*storage.CreateImageStoreConflict); ok {
log.Debugf("Store already exists")
} else {
log.Debugf("Creating a store failed: %#v", err)
return err
}
}
params := storage.NewListImagesParams().WithStoreName(host)
layers, err := client.Storage.ListImages(params)
if err != nil {
return fmt.Errorf("Failed to retrieve image list from portlayer: %s", err)
}
for _, layer := range layers.Payload {
imageConfig := &metadata.ImageConfig{}
if err := json.Unmarshal([]byte(layer.Metadata["metaData"]), imageConfig); err != nil {
derr.NewErrorWithStatusCode(fmt.Errorf("Failed to unmarshal image config: %s", err),
http.StatusInternalServerError)
}
if imageConfig.ImageID != "" {
var imageID string
// Don't assume the image id in image has "sha256:<id> as format. We store it in
// this fomat to make it easier to lookup by digest
if strings.HasPrefix(imageConfig.ImageID, "sha") {
imageID = imageConfig.ImageID
} else {
imageID = "sha256:" + imageConfig.ImageID
}
c.cacheByID[imageID] = imageConfig
// Normalize the name stored in imageConfig using Docker's reference code
ref, err := reference.WithName(imageConfig.Name)
if err != nil {
log.Errorf("Tried to create reference from %s: %s", imageConfig.Name, err.Error())
continue
}
for id := range imageConfig.Tags {
tag := imageConfig.Tags[id]
ref, err = reference.WithTag(ref, tag)
if err != nil {
log.Errorf("Tried to create tagged reference from %s and tag %s: %s", imageConfig.Name, tag, err.Error())
continue
}
if tagged, ok := ref.(reference.NamedTagged); ok {
taggedName := fmt.Sprintf("%s:%s", tagged.Name(), tagged.Tag())
c.cacheByName[taggedName] = imageConfig
} else {
c.cacheByName[ref.Name()] = imageConfig
}
}
}
}
CacheNotUpdated = false
return nil
}
func restoreCustomImage(is image.Store, ls layer.Store, rs reference.Store) error {
type graphDriverStore interface {
GraphDriver() graphdriver.Driver
}
gds, ok := ls.(graphDriverStore)
if !ok {
return nil
}
driver := gds.GraphDriver()
wd, ok := driver.(*windows.Driver)
if !ok {
return nil
}
imageInfos, err := wd.GetCustomImageInfos()
if err != nil {
return err
}
// Convert imageData to valid image configuration
for _, info := range imageInfos {
name := strings.ToLower(info.Name)
type registrar interface {
RegisterDiffID(graphID string, size int64) (layer.Layer, error)
}
r, ok := ls.(registrar)
if !ok {
return errors.New("Layerstore doesn't support RegisterDiffID")
}
if _, err := r.RegisterDiffID(info.ID, info.Size); err != nil {
return err
}
// layer is intentionally not released
rootFS := image.NewRootFSWithBaseLayer(filepath.Base(info.Path))
// Create history for base layer
config, err := json.Marshal(&image.Image{
V1Image: image.V1Image{
DockerVersion: dockerversion.Version,
Architecture: runtime.GOARCH,
OS: runtime.GOOS,
Created: info.CreatedTime,
},
RootFS: rootFS,
History: []image.History{},
OSVersion: info.OSVersion,
OSFeatures: info.OSFeatures,
})
named, err := reference.ParseNamed(name)
if err != nil {
return err
}
ref, err := reference.WithTag(named, info.Version)
if err != nil {
return err
}
id, err := is.Create(config)
if err != nil {
logrus.Warnf("Failed to restore custom image %s with error: %s.", name, err)
logrus.Warnf("Skipping image %s...", name)
continue
}
if err := rs.AddTag(ref, id, true); err != nil {
return err
}
logrus.Debugf("Registered base layer %s as %s", ref, id)
}
return nil
}
func (mf *v1ManifestFetcher) fetchWithSession(ctx context.Context, ref reference.Named) (*types.ImageInspect, error) {
repoData, err := mf.session.GetRepositoryData(mf.repoInfo)
if err != nil {
if strings.Contains(err.Error(), "HTTP code: 404") {
return nil, fmt.Errorf("Error: image %s not found", mf.repoInfo.RemoteName())
}
// Unexpected HTTP error
return nil, err
}
var tagsList map[string]string
tagsList, err = mf.session.GetRemoteTags(repoData.Endpoints, mf.repoInfo)
if err != nil {
logrus.Errorf("unable to get remote tags: %s", err)
return nil, err
}
logrus.Debugf("Retrieving the tag list")
tagged, isTagged := ref.(reference.NamedTagged)
var tagID, tag string
if isTagged {
tag = tagged.Tag()
tagsList[tagged.Tag()] = tagID
} else {
ref, err = reference.WithTag(ref, reference.DefaultTag)
if err != nil {
return nil, err
}
tagged, _ := ref.(reference.NamedTagged)
tag = tagged.Tag()
tagsList[tagged.Tag()] = tagID
}
tagID, err = mf.session.GetRemoteTag(repoData.Endpoints, mf.repoInfo, tag)
if err == registry.ErrRepoNotFound {
return nil, fmt.Errorf("Tag %s not found in repository %s", tag, mf.repoInfo.FullName())
}
if err != nil {
logrus.Errorf("unable to get remote tags: %s", err)
return nil, err
}
tagList := []string{}
for tag := range tagsList {
tagList = append(tagList, tag)
}
img := repoData.ImgList[tagID]
var pulledImg *image.Image
for _, ep := range mf.repoInfo.Index.Mirrors {
if pulledImg, err = mf.pullImageJSON(img.ID, ep, repoData.Tokens); err != nil {
// Don't report errors when pulling from mirrors.
logrus.Debugf("Error pulling image json of %s:%s, mirror: %s, %s", mf.repoInfo.FullName(), img.Tag, ep, err)
continue
}
break
}
if pulledImg == nil {
for _, ep := range repoData.Endpoints {
if pulledImg, err = mf.pullImageJSON(img.ID, ep, repoData.Tokens); err != nil {
// It's not ideal that only the last error is returned, it would be better to concatenate the errors.
logrus.Infof("Error pulling image json of %s:%s, endpoint: %s, %v", mf.repoInfo.FullName(), img.Tag, ep, err)
continue
}
break
}
}
if err != nil {
return nil, fmt.Errorf("Error pulling image (%s) from %s, %v", img.Tag, mf.repoInfo.FullName(), err)
}
if pulledImg == nil {
return nil, fmt.Errorf("No such image %s:%s", mf.repoInfo.FullName(), tag)
}
return makeImageInspect(pulledImg, tag, "", tagList), nil
}
func (mf *v2ManifestFetcher) fetchWithRepository(ctx context.Context, ref reference.Named) (*imageInspect, error) {
var (
manifest distribution.Manifest
tagOrDigest string // Used for logging/progress only
tagList = []string{}
)
manSvc, err := mf.repo.Manifests(ctx)
if err != nil {
return nil, err
}
if _, isTagged := ref.(reference.NamedTagged); !isTagged {
ref, err = reference.WithTag(ref, reference.DefaultTag)
if err != nil {
return nil, err
}
}
if tagged, isTagged := ref.(reference.NamedTagged); isTagged {
// NOTE: not using TagService.Get, since it uses HEAD requests
// against the manifests endpoint, which are not supported by
// all registry versions.
manifest, err = manSvc.Get(ctx, "", client.WithTag(tagged.Tag()))
if err != nil {
return nil, allowV1Fallback(err)
}
tagOrDigest = tagged.Tag()
} else if digested, isDigested := ref.(reference.Canonical); isDigested {
manifest, err = manSvc.Get(ctx, digested.Digest())
if err != nil {
return nil, err
}
tagOrDigest = digested.Digest().String()
} else {
return nil, fmt.Errorf("internal error: reference has neither a tag nor a digest: %s", ref.String())
}
if manifest == nil {
return nil, fmt.Errorf("image manifest does not exist for tag or digest %q", tagOrDigest)
}
// If manSvc.Get succeeded, we can be confident that the registry on
// the other side speaks the v2 protocol.
mf.confirmedV2 = true
tagList, err = mf.repo.Tags(ctx).All(ctx)
if err != nil {
// If this repository doesn't exist on V2, we should
// permit a fallback to V1.
return nil, allowV1Fallback(err)
}
var (
image *image.Image
manifestDigest digest.Digest
)
switch v := manifest.(type) {
case *schema1.SignedManifest:
image, manifestDigest, err = mf.pullSchema1(ctx, ref, v)
if err != nil {
return nil, err
}
case *schema2.DeserializedManifest:
image, manifestDigest, err = mf.pullSchema2(ctx, ref, v)
if err != nil {
return nil, err
}
case *manifestlist.DeserializedManifestList:
image, manifestDigest, err = mf.pullManifestList(ctx, ref, v)
if err != nil {
return nil, err
}
default:
return nil, errors.New("unsupported manifest format")
}
// TODO(runcom)
//var showTags bool
//if reference.IsNameOnly(ref) {
//showTags = true
//logrus.Debug("Using default tag: latest")
//ref = reference.WithDefaultTag(ref)
//}
//_ = showTags
return makeImageInspect(image, tagOrDigest, manifestDigest, tagList), nil
}
func TestTokenPassThru(t *testing.T) {
authConfig := &types.AuthConfig{
RegistryToken: "mysecrettoken",
}
gotToken := false
handler := func(w http.ResponseWriter, r *http.Request) {
if strings.Contains(r.Header.Get("Authorization"), authConfig.RegistryToken) {
logrus.Debug("Detected registry token in auth header")
gotToken = true
}
if r.RequestURI == "/v2/" {
w.Header().Set("WWW-Authenticate", `Bearer realm="foorealm"`)
w.WriteHeader(401)
}
}
ts := httptest.NewServer(http.HandlerFunc(handler))
defer ts.Close()
tmp, err := utils.TestDirectory("")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmp)
endpoint := registry.APIEndpoint{
Mirror: false,
URL: ts.URL,
Version: 2,
Official: false,
TrimHostname: false,
TLSConfig: nil,
//VersionHeader: "verheader",
}
n, _ := reference.ParseNamed("testremotename")
repoInfo := ®istry.RepositoryInfo{
Named: n,
Index: ®istrytypes.IndexInfo{
Name: "testrepo",
Mirrors: nil,
Secure: false,
Official: false,
},
Official: false,
}
imagePullConfig := &ImagePullConfig{
MetaHeaders: http.Header{},
AuthConfig: authConfig,
}
puller, err := newPuller(endpoint, repoInfo, imagePullConfig)
if err != nil {
t.Fatal(err)
}
p := puller.(*v2Puller)
ctx := context.Background()
p.repo, _, err = NewV2Repository(ctx, p.repoInfo, p.endpoint, p.config.MetaHeaders, p.config.AuthConfig, "pull")
if err != nil {
t.Fatal(err)
}
logrus.Debug("About to pull")
// We expect it to fail, since we haven't mock'd the full registry exchange in our handler above
tag, _ := reference.WithTag(n, "tag_goes_here")
_ = p.pullV2Repository(ctx, tag)
if !gotToken {
t.Fatal("Failed to receive registry token")
}
}
// Commit creates a new filesystem image from the current state of a container.
// The image can optionally be tagged into a repository.
func (daemon *Daemon) Commit(name string, c *backend.ContainerCommitConfig) (string, error) {
container, err := daemon.GetContainer(name)
if err != nil {
return "", err
}
// It is not possible to commit a running container on Windows
if runtime.GOOS == "windows" && container.IsRunning() {
return "", fmt.Errorf("Windows does not support commit of a running container")
}
if c.Pause && !container.IsPaused() {
daemon.containerPause(container)
defer daemon.containerUnpause(container)
}
newConfig, err := dockerfile.BuildFromConfig(c.Config, c.Changes)
if err != nil {
return "", err
}
if c.MergeConfigs {
if err := merge(newConfig, container.Config); err != nil {
return "", err
}
}
rwTar, err := daemon.exportContainerRw(container)
if err != nil {
return "", err
}
defer func() {
if rwTar != nil {
rwTar.Close()
}
}()
var history []image.History
rootFS := image.NewRootFS()
osVersion := ""
var osFeatures []string
if container.ImageID != "" {
img, err := daemon.imageStore.Get(container.ImageID)
if err != nil {
return "", err
}
history = img.History
rootFS = img.RootFS
osVersion = img.OSVersion
osFeatures = img.OSFeatures
}
l, err := daemon.layerStore.Register(rwTar, rootFS.ChainID())
if err != nil {
return "", err
}
defer layer.ReleaseAndLog(daemon.layerStore, l)
h := image.History{
Author: c.Author,
Created: time.Now().UTC(),
CreatedBy: strings.Join(container.Config.Cmd, " "),
Comment: c.Comment,
EmptyLayer: true,
}
if diffID := l.DiffID(); layer.DigestSHA256EmptyTar != diffID {
h.EmptyLayer = false
rootFS.Append(diffID)
}
history = append(history, h)
config, err := json.Marshal(&image.Image{
V1Image: image.V1Image{
DockerVersion: dockerversion.Version,
Config: newConfig,
Architecture: runtime.GOARCH,
OS: runtime.GOOS,
Container: container.ID,
ContainerConfig: *container.Config,
Author: c.Author,
Created: h.Created,
},
RootFS: rootFS,
History: history,
OSFeatures: osFeatures,
OSVersion: osVersion,
})
if err != nil {
return "", err
}
id, err := daemon.imageStore.Create(config)
if err != nil {
return "", err
}
if container.ImageID != "" {
if err := daemon.imageStore.SetParent(id, container.ImageID); err != nil {
return "", err
}
}
if c.Repo != "" {
newTag, err := reference.WithName(c.Repo) // todo: should move this to API layer
if err != nil {
return "", err
}
if c.Tag != "" {
if newTag, err = reference.WithTag(newTag, c.Tag); err != nil {
return "", err
}
}
if err := daemon.TagImageWithReference(id, newTag); err != nil {
return "", err
}
}
attributes := map[string]string{
"comment": c.Comment,
}
daemon.LogContainerEventWithAttributes(container, "commit", attributes)
return id.String(), nil
}
// TrustedPull handles content trust pulling of an image
func (cli *DockerCli) TrustedPull(ctx context.Context, repoInfo *registry.RepositoryInfo, ref registry.Reference, authConfig types.AuthConfig, requestPrivilege types.RequestPrivilegeFunc) error {
var refs []target
notaryRepo, err := cli.getNotaryRepository(repoInfo, authConfig, "pull")
if err != nil {
fmt.Fprintf(cli.out, "Error establishing connection to trust repository: %s\n", err)
return err
}
if ref.String() == "" {
// List all targets
targets, err := notaryRepo.ListTargets(releasesRole, data.CanonicalTargetsRole)
if err != nil {
return notaryError(repoInfo.FullName(), err)
}
for _, tgt := range targets {
t, err := convertTarget(tgt.Target)
if err != nil {
fmt.Fprintf(cli.out, "Skipping target for %q\n", repoInfo.Name())
continue
}
// Only list tags in the top level targets role or the releases delegation role - ignore
// all other delegation roles
if tgt.Role != releasesRole && tgt.Role != data.CanonicalTargetsRole {
continue
}
refs = append(refs, t)
}
if len(refs) == 0 {
return notaryError(repoInfo.FullName(), fmt.Errorf("No trusted tags for %s", repoInfo.FullName()))
}
} else {
t, err := notaryRepo.GetTargetByName(ref.String(), releasesRole, data.CanonicalTargetsRole)
if err != nil {
return notaryError(repoInfo.FullName(), err)
}
// Only get the tag if it's in the top level targets role or the releases delegation role
// ignore it if it's in any other delegation roles
if t.Role != releasesRole && t.Role != data.CanonicalTargetsRole {
return notaryError(repoInfo.FullName(), fmt.Errorf("No trust data for %s", ref.String()))
}
logrus.Debugf("retrieving target for %s role\n", t.Role)
r, err := convertTarget(t.Target)
if err != nil {
return err
}
refs = append(refs, r)
}
for i, r := range refs {
displayTag := r.reference.String()
if displayTag != "" {
displayTag = ":" + displayTag
}
fmt.Fprintf(cli.out, "Pull (%d of %d): %s%s@%s\n", i+1, len(refs), repoInfo.Name(), displayTag, r.digest)
ref, err := reference.WithDigest(repoInfo, r.digest)
if err != nil {
return err
}
if err := cli.ImagePullPrivileged(ctx, authConfig, ref.String(), requestPrivilege, false); err != nil {
return err
}
// If reference is not trusted, tag by trusted reference
if !r.reference.HasDigest() {
tagged, err := reference.WithTag(repoInfo, r.reference.String())
if err != nil {
return err
}
trustedRef, err := reference.WithDigest(repoInfo, r.digest)
if err != nil {
return err
}
if err := cli.TagTrusted(ctx, trustedRef, tagged); err != nil {
return err
}
}
}
return nil
}
func restoreCustomImage(driver graphdriver.Driver, is image.Store, ls layer.Store, rs reference.Store) error {
if wd, ok := driver.(*windows.Driver); ok {
imageInfos, err := wd.GetCustomImageInfos()
if err != nil {
return err
}
// Convert imageData to valid image configuration
for i := range imageInfos {
name := strings.ToLower(imageInfos[i].Name)
type registrar interface {
RegisterDiffID(graphID string, size int64) (layer.Layer, error)
}
r, ok := ls.(registrar)
if !ok {
return errors.New("Layerstore doesn't support RegisterDiffID")
}
if _, err := r.RegisterDiffID(imageInfos[i].ID, imageInfos[i].Size); err != nil {
return err
}
// layer is intentionally not released
rootFS := image.NewRootFS()
rootFS.BaseLayer = filepath.Base(imageInfos[i].Path)
// Create history for base layer
config, err := json.Marshal(&image.Image{
V1Image: image.V1Image{
DockerVersion: dockerversion.Version,
Architecture: runtime.GOARCH,
OS: runtime.GOOS,
Created: imageInfos[i].CreatedTime,
},
RootFS: rootFS,
History: []image.History{},
})
named, err := reference.ParseNamed(name)
if err != nil {
return err
}
ref, err := reference.WithTag(named, imageInfos[i].Version)
if err != nil {
return err
}
id, err := is.Create(config)
if err != nil {
return err
}
if err := rs.AddTag(ref, id, true); err != nil {
return err
}
logrus.Debugf("Registered base layer %s as %s", ref, id)
}
}
return nil
}
// Creates an image from Pull or from Import
func (s *router) postImagesCreate(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := httputils.ParseForm(r); err != nil {
return err
}
var (
image = r.Form.Get("fromImage")
repo = r.Form.Get("repo")
tag = r.Form.Get("tag")
message = r.Form.Get("message")
)
authEncoded := r.Header.Get("X-Registry-Auth")
authConfig := &types.AuthConfig{}
if authEncoded != "" {
authJSON := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authEncoded))
if err := json.NewDecoder(authJSON).Decode(authConfig); err != nil {
// for a pull it is not an error if no auth was given
// to increase compatibility with the existing api it is defaulting to be empty
authConfig = &types.AuthConfig{}
}
}
var (
err error
output = ioutils.NewWriteFlusher(w)
)
defer output.Close()
w.Header().Set("Content-Type", "application/json")
if image != "" { //pull
// Special case: "pull -a" may send an image name with a
// trailing :. This is ugly, but let's not break API
// compatibility.
image = strings.TrimSuffix(image, ":")
var ref reference.Named
ref, err = reference.ParseNamed(image)
if err == nil {
if tag != "" {
// The "tag" could actually be a digest.
var dgst digest.Digest
dgst, err = digest.ParseDigest(tag)
if err == nil {
ref, err = reference.WithDigest(ref, dgst)
} else {
ref, err = reference.WithTag(ref, tag)
}
}
if err == nil {
metaHeaders := map[string][]string{}
for k, v := range r.Header {
if strings.HasPrefix(k, "X-Meta-") {
metaHeaders[k] = v
}
}
err = s.daemon.PullImage(ref, metaHeaders, authConfig, output)
}
}
} else { //import
var newRef reference.Named
if repo != "" {
var err error
newRef, err = reference.ParseNamed(repo)
if err != nil {
return err
}
if _, isCanonical := newRef.(reference.Canonical); isCanonical {
return errors.New("cannot import digest reference")
}
if tag != "" {
newRef, err = reference.WithTag(newRef, tag)
if err != nil {
return err
}
}
}
src := r.Form.Get("fromSrc")
// 'err' MUST NOT be defined within this block, we need any error
// generated from the download to be available to the output
// stream processing below
var newConfig *container.Config
newConfig, err = dockerfile.BuildFromConfig(&container.Config{}, r.Form["changes"])
if err != nil {
return err
}
err = s.daemon.ImportImage(src, newRef, message, r.Body, output, newConfig)
}
if err != nil {
if !output.Flushed() {
return err
}
sf := streamformatter.NewJSONStreamFormatter()
output.Write(sf.FormatError(err))
}
return nil
}
