| package registry |
| |
| import ( |
| "bytes" |
| "crypto/sha256" |
| "errors" |
| "sync" |
| // this is required for some certificates |
| _ "crypto/sha512" |
| "encoding/hex" |
| "encoding/json" |
| "fmt" |
| "io" |
| "io/ioutil" |
| "net/http" |
| "net/http/cookiejar" |
| "net/url" |
| "strconv" |
| "strings" |
| |
| "github.com/Sirupsen/logrus" |
| "github.com/docker/distribution/registry/api/errcode" |
| "github.com/docker/docker/api/types" |
| registrytypes "github.com/docker/docker/api/types/registry" |
| "github.com/docker/docker/pkg/httputils" |
| "github.com/docker/docker/pkg/ioutils" |
| "github.com/docker/docker/pkg/stringid" |
| "github.com/docker/docker/pkg/tarsum" |
| "github.com/docker/docker/reference" |
| ) |
| |
| var ( |
| // ErrRepoNotFound is returned if the repository didn't exist on the |
| // remote side |
| ErrRepoNotFound = errors.New("Repository not found") |
| ) |
| |
| // A Session is used to communicate with a V1 registry |
| type Session struct { |
| indexEndpoint *V1Endpoint |
| client *http.Client |
| // TODO(tiborvass): remove authConfig |
| authConfig *types.AuthConfig |
| id string |
| } |
| |
| type authTransport struct { |
| http.RoundTripper |
| *types.AuthConfig |
| |
| alwaysSetBasicAuth bool |
| token []string |
| |
| mu sync.Mutex // guards modReq |
| modReq map[*http.Request]*http.Request // original -> modified |
| } |
| |
| // AuthTransport handles the auth layer when communicating with a v1 registry (private or official) |
| // |
| // For private v1 registries, set alwaysSetBasicAuth to true. |
| // |
| // For the official v1 registry, if there isn't already an Authorization header in the request, |
| // but there is an X-Docker-Token header set to true, then Basic Auth will be used to set the Authorization header. |
| // After sending the request with the provided base http.RoundTripper, if an X-Docker-Token header, representing |
| // a token, is present in the response, then it gets cached and sent in the Authorization header of all subsequent |
| // requests. |
| // |
| // If the server sends a token without the client having requested it, it is ignored. |
| // |
| // This RoundTripper also has a CancelRequest method important for correct timeout handling. |
| func AuthTransport(base http.RoundTripper, authConfig *types.AuthConfig, alwaysSetBasicAuth bool) http.RoundTripper { |
| if base == nil { |
| base = http.DefaultTransport |
| } |
| return &authTransport{ |
| RoundTripper: base, |
| AuthConfig: authConfig, |
| alwaysSetBasicAuth: alwaysSetBasicAuth, |
| modReq: make(map[*http.Request]*http.Request), |
| } |
| } |
| |
| // cloneRequest returns a clone of the provided *http.Request. |
| // The clone is a shallow copy of the struct and its Header map. |
| func cloneRequest(r *http.Request) *http.Request { |
| // shallow copy of the struct |
| r2 := new(http.Request) |
| *r2 = *r |
| // deep copy of the Header |
| r2.Header = make(http.Header, len(r.Header)) |
| for k, s := range r.Header { |
| r2.Header[k] = append([]string(nil), s...) |
| } |
| |
| return r2 |
| } |
| |
| // RoundTrip changes an HTTP request's headers to add the necessary |
| // authentication-related headers |
| func (tr *authTransport) RoundTrip(orig *http.Request) (*http.Response, error) { |
| // Authorization should not be set on 302 redirect for untrusted locations. |
| // This logic mirrors the behavior in addRequiredHeadersToRedirectedRequests. |
| // As the authorization logic is currently implemented in RoundTrip, |
| // a 302 redirect is detected by looking at the Referrer header as go http package adds said header. |
| // This is safe as Docker doesn't set Referrer in other scenarios. |
| if orig.Header.Get("Referer") != "" && !trustedLocation(orig) { |
| return tr.RoundTripper.RoundTrip(orig) |
| } |
| |
| req := cloneRequest(orig) |
| tr.mu.Lock() |
| tr.modReq[orig] = req |
| tr.mu.Unlock() |
| |
| if tr.alwaysSetBasicAuth { |
| if tr.AuthConfig == nil { |
| return nil, errors.New("unexpected error: empty auth config") |
| } |
| req.SetBasicAuth(tr.Username, tr.Password) |
| return tr.RoundTripper.RoundTrip(req) |
| } |
| |
| // Don't override |
| if req.Header.Get("Authorization") == "" { |
| if req.Header.Get("X-Docker-Token") == "true" && tr.AuthConfig != nil && len(tr.Username) > 0 { |
| req.SetBasicAuth(tr.Username, tr.Password) |
| } else if len(tr.token) > 0 { |
| req.Header.Set("Authorization", "Token "+strings.Join(tr.token, ",")) |
| } |
| } |
| resp, err := tr.RoundTripper.RoundTrip(req) |
| if err != nil { |
| delete(tr.modReq, orig) |
| return nil, err |
| } |
| if len(resp.Header["X-Docker-Token"]) > 0 { |
| tr.token = resp.Header["X-Docker-Token"] |
| } |
| resp.Body = &ioutils.OnEOFReader{ |
| Rc: resp.Body, |
| Fn: func() { |
| tr.mu.Lock() |
| delete(tr.modReq, orig) |
| tr.mu.Unlock() |
| }, |
| } |
| return resp, nil |
| } |
| |
| // CancelRequest cancels an in-flight request by closing its connection. |
| func (tr *authTransport) CancelRequest(req *http.Request) { |
| type canceler interface { |
| CancelRequest(*http.Request) |
| } |
| if cr, ok := tr.RoundTripper.(canceler); ok { |
| tr.mu.Lock() |
| modReq := tr.modReq[req] |
| delete(tr.modReq, req) |
| tr.mu.Unlock() |
| cr.CancelRequest(modReq) |
| } |
| } |
| |
| func authorizeClient(client *http.Client, authConfig *types.AuthConfig, endpoint *V1Endpoint) error { |
| var alwaysSetBasicAuth bool |
| |
| // If we're working with a standalone private registry over HTTPS, send Basic Auth headers |
| // alongside all our requests. |
| if endpoint.String() != IndexServer && endpoint.URL.Scheme == "https" { |
| info, err := endpoint.Ping() |
| if err != nil { |
| return err |
| } |
| if info.Standalone && authConfig != nil { |
| logrus.Debugf("Endpoint %s is eligible for private registry. Enabling decorator.", endpoint.String()) |
| alwaysSetBasicAuth = true |
| } |
| } |
| |
| // Annotate the transport unconditionally so that v2 can |
| // properly fallback on v1 when an image is not found. |
| client.Transport = AuthTransport(client.Transport, authConfig, alwaysSetBasicAuth) |
| |
| jar, err := cookiejar.New(nil) |
| if err != nil { |
| return errors.New("cookiejar.New is not supposed to return an error") |
| } |
| client.Jar = jar |
| |
| return nil |
| } |
| |
| func newSession(client *http.Client, authConfig *types.AuthConfig, endpoint *V1Endpoint) *Session { |
| return &Session{ |
| authConfig: authConfig, |
| client: client, |
| indexEndpoint: endpoint, |
| id: stringid.GenerateRandomID(), |
| } |
| } |
| |
| // NewSession creates a new session |
| // TODO(tiborvass): remove authConfig param once registry client v2 is vendored |
| func NewSession(client *http.Client, authConfig *types.AuthConfig, endpoint *V1Endpoint) (*Session, error) { |
| if err := authorizeClient(client, authConfig, endpoint); err != nil { |
| return nil, err |
| } |
| |
| return newSession(client, authConfig, endpoint), nil |
| } |
| |
| // ID returns this registry session's ID. |
| func (r *Session) ID() string { |
| return r.id |
| } |
| |
| // GetRemoteHistory retrieves the history of a given image from the registry. |
| // It returns a list of the parent's JSON files (including the requested image). |
| func (r *Session) GetRemoteHistory(imgID, registry string) ([]string, error) { |
| res, err := r.client.Get(registry + "images/" + imgID + "/ancestry") |
| if err != nil { |
| return nil, err |
| } |
| defer res.Body.Close() |
| if res.StatusCode != 200 { |
| if res.StatusCode == 401 { |
| return nil, errcode.ErrorCodeUnauthorized.WithArgs() |
| } |
| return nil, httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to fetch remote history for %s", res.StatusCode, imgID), res) |
| } |
| |
| var history []string |
| if err := json.NewDecoder(res.Body).Decode(&history); err != nil { |
| return nil, fmt.Errorf("Error while reading the http response: %v", err) |
| } |
| |
| logrus.Debugf("Ancestry: %v", history) |
| return history, nil |
| } |
| |
| // LookupRemoteImage checks if an image exists in the registry |
| func (r *Session) LookupRemoteImage(imgID, registry string) error { |
| res, err := r.client.Get(registry + "images/" + imgID + "/json") |
| if err != nil { |
| return err |
| } |
| res.Body.Close() |
| if res.StatusCode != 200 { |
| return httputils.NewHTTPRequestError(fmt.Sprintf("HTTP code %d", res.StatusCode), res) |
| } |
| return nil |
| } |
| |
| // GetRemoteImageJSON retrieves an image's JSON metadata from the registry. |
| func (r *Session) GetRemoteImageJSON(imgID, registry string) ([]byte, int64, error) { |
| res, err := r.client.Get(registry + "images/" + imgID + "/json") |
| if err != nil { |
| return nil, -1, fmt.Errorf("Failed to download json: %s", err) |
| } |
| defer res.Body.Close() |
| if res.StatusCode != 200 { |
| return nil, -1, httputils.NewHTTPRequestError(fmt.Sprintf("HTTP code %d", res.StatusCode), res) |
| } |
| // if the size header is not present, then set it to '-1' |
| imageSize := int64(-1) |
| if hdr := res.Header.Get("X-Docker-Size"); hdr != "" { |
| imageSize, err = strconv.ParseInt(hdr, 10, 64) |
| if err != nil { |
| return nil, -1, err |
| } |
| } |
| |
| jsonString, err := ioutil.ReadAll(res.Body) |
| if err != nil { |
| return nil, -1, fmt.Errorf("Failed to parse downloaded json: %v (%s)", err, jsonString) |
| } |
| return jsonString, imageSize, nil |
| } |
| |
| // GetRemoteImageLayer retrieves an image layer from the registry |
| func (r *Session) GetRemoteImageLayer(imgID, registry string, imgSize int64) (io.ReadCloser, error) { |
| var ( |
| statusCode = 0 |
| res *http.Response |
| err error |
| imageURL = fmt.Sprintf("%simages/%s/layer", registry, imgID) |
| ) |
| |
| req, err := http.NewRequest("GET", imageURL, nil) |
| if err != nil { |
| return nil, fmt.Errorf("Error while getting from the server: %v", err) |
| } |
| statusCode = 0 |
| res, err = r.client.Do(req) |
| if err != nil { |
| logrus.Debugf("Error contacting registry %s: %v", registry, err) |
| // the only case err != nil && res != nil is https://golang.org/src/net/http/client.go#L515 |
| if res != nil { |
| if res.Body != nil { |
| res.Body.Close() |
| } |
| statusCode = res.StatusCode |
| } |
| return nil, fmt.Errorf("Server error: Status %d while fetching image layer (%s)", |
| statusCode, imgID) |
| } |
| |
| if res.StatusCode != 200 { |
| res.Body.Close() |
| return nil, fmt.Errorf("Server error: Status %d while fetching image layer (%s)", |
| res.StatusCode, imgID) |
| } |
| |
| if res.Header.Get("Accept-Ranges") == "bytes" && imgSize > 0 { |
| logrus.Debug("server supports resume") |
| return httputils.ResumableRequestReaderWithInitialResponse(r.client, req, 5, imgSize, res), nil |
| } |
| logrus.Debug("server doesn't support resume") |
| return res.Body, nil |
| } |
| |
| // GetRemoteTag retrieves the tag named in the askedTag argument from the given |
| // repository. It queries each of the registries supplied in the registries |
| // argument, and returns data from the first one that answers the query |
| // successfully. |
| func (r *Session) GetRemoteTag(registries []string, repositoryRef reference.Named, askedTag string) (string, error) { |
| repository := repositoryRef.RemoteName() |
| |
| if strings.Count(repository, "/") == 0 { |
| // This will be removed once the registry supports auto-resolution on |
| // the "library" namespace |
| repository = "library/" + repository |
| } |
| for _, host := range registries { |
| endpoint := fmt.Sprintf("%srepositories/%s/tags/%s", host, repository, askedTag) |
| res, err := r.client.Get(endpoint) |
| if err != nil { |
| return "", err |
| } |
| |
| logrus.Debugf("Got status code %d from %s", res.StatusCode, endpoint) |
| defer res.Body.Close() |
| |
| if res.StatusCode == 404 { |
| return "", ErrRepoNotFound |
| } |
| if res.StatusCode != 200 { |
| continue |
| } |
| |
| var tagID string |
| if err := json.NewDecoder(res.Body).Decode(&tagID); err != nil { |
| return "", err |
| } |
| return tagID, nil |
| } |
| return "", fmt.Errorf("Could not reach any registry endpoint") |
| } |
| |
| // GetRemoteTags retrieves all tags from the given repository. It queries each |
| // of the registries supplied in the registries argument, and returns data from |
| // the first one that answers the query successfully. It returns a map with |
| // tag names as the keys and image IDs as the values. |
| func (r *Session) GetRemoteTags(registries []string, repositoryRef reference.Named) (map[string]string, error) { |
| repository := repositoryRef.RemoteName() |
| |
| if strings.Count(repository, "/") == 0 { |
| // This will be removed once the registry supports auto-resolution on |
| // the "library" namespace |
| repository = "library/" + repository |
| } |
| for _, host := range registries { |
| endpoint := fmt.Sprintf("%srepositories/%s/tags", host, repository) |
| res, err := r.client.Get(endpoint) |
| if err != nil { |
| return nil, err |
| } |
| |
| logrus.Debugf("Got status code %d from %s", res.StatusCode, endpoint) |
| defer res.Body.Close() |
| |
| if res.StatusCode == 404 { |
| return nil, ErrRepoNotFound |
| } |
| if res.StatusCode != 200 { |
| continue |
| } |
| |
| result := make(map[string]string) |
| if err := json.NewDecoder(res.Body).Decode(&result); err != nil { |
| return nil, err |
| } |
| return result, nil |
| } |
| return nil, fmt.Errorf("Could not reach any registry endpoint") |
| } |
| |
| func buildEndpointsList(headers []string, indexEp string) ([]string, error) { |
| var endpoints []string |
| parsedURL, err := url.Parse(indexEp) |
| if err != nil { |
| return nil, err |
| } |
| var urlScheme = parsedURL.Scheme |
| // The registry's URL scheme has to match the Index' |
| for _, ep := range headers { |
| epList := strings.Split(ep, ",") |
| for _, epListElement := range epList { |
| endpoints = append( |
| endpoints, |
| fmt.Sprintf("%s://%s/v1/", urlScheme, strings.TrimSpace(epListElement))) |
| } |
| } |
| return endpoints, nil |
| } |
| |
| // GetRepositoryData returns lists of images and endpoints for the repository |
| func (r *Session) GetRepositoryData(name reference.Named) (*RepositoryData, error) { |
| repositoryTarget := fmt.Sprintf("%srepositories/%s/images", r.indexEndpoint.String(), name.RemoteName()) |
| |
| logrus.Debugf("[registry] Calling GET %s", repositoryTarget) |
| |
| req, err := http.NewRequest("GET", repositoryTarget, nil) |
| if err != nil { |
| return nil, err |
| } |
| // this will set basic auth in r.client.Transport and send cached X-Docker-Token headers for all subsequent requests |
| req.Header.Set("X-Docker-Token", "true") |
| res, err := r.client.Do(req) |
| if err != nil { |
| // check if the error is because of i/o timeout |
| // and return a non-obtuse error message for users |
| // "Get https://index.docker.io/v1/repositories/library/busybox/images: i/o timeout" |
| // was a top search on the docker user forum |
| if isTimeout(err) { |
| return nil, fmt.Errorf("Network timed out while trying to connect to %s. You may want to check your internet connection or if you are behind a proxy.", repositoryTarget) |
| } |
| return nil, fmt.Errorf("Error while pulling image: %v", err) |
| } |
| defer res.Body.Close() |
| if res.StatusCode == 401 { |
| return nil, errcode.ErrorCodeUnauthorized.WithArgs() |
| } |
| // TODO: Right now we're ignoring checksums in the response body. |
| // In the future, we need to use them to check image validity. |
| if res.StatusCode == 404 { |
| return nil, httputils.NewHTTPRequestError(fmt.Sprintf("HTTP code: %d", res.StatusCode), res) |
| } else if res.StatusCode != 200 { |
| errBody, err := ioutil.ReadAll(res.Body) |
| if err != nil { |
| logrus.Debugf("Error reading response body: %s", err) |
| } |
| return nil, httputils.NewHTTPRequestError(fmt.Sprintf("Error: Status %d trying to pull repository %s: %q", res.StatusCode, name.RemoteName(), errBody), res) |
| } |
| |
| var endpoints []string |
| if res.Header.Get("X-Docker-Endpoints") != "" { |
| endpoints, err = buildEndpointsList(res.Header["X-Docker-Endpoints"], r.indexEndpoint.String()) |
| if err != nil { |
| return nil, err |
| } |
| } else { |
| // Assume the endpoint is on the same host |
| endpoints = append(endpoints, fmt.Sprintf("%s://%s/v1/", r.indexEndpoint.URL.Scheme, req.URL.Host)) |
| } |
| |
| remoteChecksums := []*ImgData{} |
| if err := json.NewDecoder(res.Body).Decode(&remoteChecksums); err != nil { |
| return nil, err |
| } |
| |
| // Forge a better object from the retrieved data |
| imgsData := make(map[string]*ImgData, len(remoteChecksums)) |
| for _, elem := range remoteChecksums { |
| imgsData[elem.ID] = elem |
| } |
| |
| return &RepositoryData{ |
| ImgList: imgsData, |
| Endpoints: endpoints, |
| }, nil |
| } |
| |
| // PushImageChecksumRegistry uploads checksums for an image |
| func (r *Session) PushImageChecksumRegistry(imgData *ImgData, registry string) error { |
| u := registry + "images/" + imgData.ID + "/checksum" |
| |
| logrus.Debugf("[registry] Calling PUT %s", u) |
| |
| req, err := http.NewRequest("PUT", u, nil) |
| if err != nil { |
| return err |
| } |
| req.Header.Set("X-Docker-Checksum", imgData.Checksum) |
| req.Header.Set("X-Docker-Checksum-Payload", imgData.ChecksumPayload) |
| |
| res, err := r.client.Do(req) |
| if err != nil { |
| return fmt.Errorf("Failed to upload metadata: %v", err) |
| } |
| defer res.Body.Close() |
| if len(res.Cookies()) > 0 { |
| r.client.Jar.SetCookies(req.URL, res.Cookies()) |
| } |
| if res.StatusCode != 200 { |
| errBody, err := ioutil.ReadAll(res.Body) |
| if err != nil { |
| return fmt.Errorf("HTTP code %d while uploading metadata and error when trying to parse response body: %s", res.StatusCode, err) |
| } |
| var jsonBody map[string]string |
| if err := json.Unmarshal(errBody, &jsonBody); err != nil { |
| errBody = []byte(err.Error()) |
| } else if jsonBody["error"] == "Image already exists" { |
| return ErrAlreadyExists |
| } |
| return fmt.Errorf("HTTP code %d while uploading metadata: %q", res.StatusCode, errBody) |
| } |
| return nil |
| } |
| |
| // PushImageJSONRegistry pushes JSON metadata for a local image to the registry |
| func (r *Session) PushImageJSONRegistry(imgData *ImgData, jsonRaw []byte, registry string) error { |
| |
| u := registry + "images/" + imgData.ID + "/json" |
| |
| logrus.Debugf("[registry] Calling PUT %s", u) |
| |
| req, err := http.NewRequest("PUT", u, bytes.NewReader(jsonRaw)) |
| if err != nil { |
| return err |
| } |
| req.Header.Add("Content-type", "application/json") |
| |
| res, err := r.client.Do(req) |
| if err != nil { |
| return fmt.Errorf("Failed to upload metadata: %s", err) |
| } |
| defer res.Body.Close() |
| if res.StatusCode == 401 && strings.HasPrefix(registry, "http://") { |
| return httputils.NewHTTPRequestError("HTTP code 401, Docker will not send auth headers over HTTP.", res) |
| } |
| if res.StatusCode != 200 { |
| errBody, err := ioutil.ReadAll(res.Body) |
| if err != nil { |
| return httputils.NewHTTPRequestError(fmt.Sprintf("HTTP code %d while uploading metadata and error when trying to parse response body: %s", res.StatusCode, err), res) |
| } |
| var jsonBody map[string]string |
| if err := json.Unmarshal(errBody, &jsonBody); err != nil { |
| errBody = []byte(err.Error()) |
| } else if jsonBody["error"] == "Image already exists" { |
| return ErrAlreadyExists |
| } |
| return httputils.NewHTTPRequestError(fmt.Sprintf("HTTP code %d while uploading metadata: %q", res.StatusCode, errBody), res) |
| } |
| return nil |
| } |
| |
| // PushImageLayerRegistry sends the checksum of an image layer to the registry |
| func (r *Session) PushImageLayerRegistry(imgID string, layer io.Reader, registry string, jsonRaw []byte) (checksum string, checksumPayload string, err error) { |
| u := registry + "images/" + imgID + "/layer" |
| |
| logrus.Debugf("[registry] Calling PUT %s", u) |
| |
| tarsumLayer, err := tarsum.NewTarSum(layer, false, tarsum.Version0) |
| if err != nil { |
| return "", "", err |
| } |
| h := sha256.New() |
| h.Write(jsonRaw) |
| h.Write([]byte{'\n'}) |
| checksumLayer := io.TeeReader(tarsumLayer, h) |
| |
| req, err := http.NewRequest("PUT", u, checksumLayer) |
| if err != nil { |
| return "", "", err |
| } |
| req.Header.Add("Content-Type", "application/octet-stream") |
| req.ContentLength = -1 |
| req.TransferEncoding = []string{"chunked"} |
| res, err := r.client.Do(req) |
| if err != nil { |
| return "", "", fmt.Errorf("Failed to upload layer: %v", err) |
| } |
| if rc, ok := layer.(io.Closer); ok { |
| if err := rc.Close(); err != nil { |
| return "", "", err |
| } |
| } |
| defer res.Body.Close() |
| |
| if res.StatusCode != 200 { |
| errBody, err := ioutil.ReadAll(res.Body) |
| if err != nil { |
| return "", "", httputils.NewHTTPRequestError(fmt.Sprintf("HTTP code %d while uploading metadata and error when trying to parse response body: %s", res.StatusCode, err), res) |
| } |
| return "", "", httputils.NewHTTPRequestError(fmt.Sprintf("Received HTTP code %d while uploading layer: %q", res.StatusCode, errBody), res) |
| } |
| |
| checksumPayload = "sha256:" + hex.EncodeToString(h.Sum(nil)) |
| return tarsumLayer.Sum(jsonRaw), checksumPayload, nil |
| } |
| |
| // PushRegistryTag pushes a tag on the registry. |
| // Remote has the format '<user>/<repo> |
| func (r *Session) PushRegistryTag(remote reference.Named, revision, tag, registry string) error { |
| // "jsonify" the string |
| revision = "\"" + revision + "\"" |
| path := fmt.Sprintf("repositories/%s/tags/%s", remote.RemoteName(), tag) |
| |
| req, err := http.NewRequest("PUT", registry+path, strings.NewReader(revision)) |
| if err != nil { |
| return err |
| } |
| req.Header.Add("Content-type", "application/json") |
| req.ContentLength = int64(len(revision)) |
| res, err := r.client.Do(req) |
| if err != nil { |
| return err |
| } |
| res.Body.Close() |
| if res.StatusCode != 200 && res.StatusCode != 201 { |
| return httputils.NewHTTPRequestError(fmt.Sprintf("Internal server error: %d trying to push tag %s on %s", res.StatusCode, tag, remote.RemoteName()), res) |
| } |
| return nil |
| } |
| |
| // PushImageJSONIndex uploads an image list to the repository |
| func (r *Session) PushImageJSONIndex(remote reference.Named, imgList []*ImgData, validate bool, regs []string) (*RepositoryData, error) { |
| cleanImgList := []*ImgData{} |
| if validate { |
| for _, elem := range imgList { |
| if elem.Checksum != "" { |
| cleanImgList = append(cleanImgList, elem) |
| } |
| } |
| } else { |
| cleanImgList = imgList |
| } |
| |
| imgListJSON, err := json.Marshal(cleanImgList) |
| if err != nil { |
| return nil, err |
| } |
| var suffix string |
| if validate { |
| suffix = "images" |
| } |
| u := fmt.Sprintf("%srepositories/%s/%s", r.indexEndpoint.String(), remote.RemoteName(), suffix) |
| logrus.Debugf("[registry] PUT %s", u) |
| logrus.Debugf("Image list pushed to index:\n%s", imgListJSON) |
| headers := map[string][]string{ |
| "Content-type": {"application/json"}, |
| // this will set basic auth in r.client.Transport and send cached X-Docker-Token headers for all subsequent requests |
| "X-Docker-Token": {"true"}, |
| } |
| if validate { |
| headers["X-Docker-Endpoints"] = regs |
| } |
| |
| // Redirect if necessary |
| var res *http.Response |
| for { |
| if res, err = r.putImageRequest(u, headers, imgListJSON); err != nil { |
| return nil, err |
| } |
| if !shouldRedirect(res) { |
| break |
| } |
| res.Body.Close() |
| u = res.Header.Get("Location") |
| logrus.Debugf("Redirected to %s", u) |
| } |
| defer res.Body.Close() |
| |
| if res.StatusCode == 401 { |
| return nil, errcode.ErrorCodeUnauthorized.WithArgs() |
| } |
| |
| var tokens, endpoints []string |
| if !validate { |
| if res.StatusCode != 200 && res.StatusCode != 201 { |
| errBody, err := ioutil.ReadAll(res.Body) |
| if err != nil { |
| logrus.Debugf("Error reading response body: %s", err) |
| } |
| return nil, httputils.NewHTTPRequestError(fmt.Sprintf("Error: Status %d trying to push repository %s: %q", res.StatusCode, remote.RemoteName(), errBody), res) |
| } |
| tokens = res.Header["X-Docker-Token"] |
| logrus.Debugf("Auth token: %v", tokens) |
| |
| if res.Header.Get("X-Docker-Endpoints") == "" { |
| return nil, fmt.Errorf("Index response didn't contain any endpoints") |
| } |
| endpoints, err = buildEndpointsList(res.Header["X-Docker-Endpoints"], r.indexEndpoint.String()) |
| if err != nil { |
| return nil, err |
| } |
| } else { |
| if res.StatusCode != 204 { |
| errBody, err := ioutil.ReadAll(res.Body) |
| if err != nil { |
| logrus.Debugf("Error reading response body: %s", err) |
| } |
| return nil, httputils.NewHTTPRequestError(fmt.Sprintf("Error: Status %d trying to push checksums %s: %q", res.StatusCode, remote.RemoteName(), errBody), res) |
| } |
| } |
| |
| return &RepositoryData{ |
| Endpoints: endpoints, |
| }, nil |
| } |
| |
| func (r *Session) putImageRequest(u string, headers map[string][]string, body []byte) (*http.Response, error) { |
| req, err := http.NewRequest("PUT", u, bytes.NewReader(body)) |
| if err != nil { |
| return nil, err |
| } |
| req.ContentLength = int64(len(body)) |
| for k, v := range headers { |
| req.Header[k] = v |
| } |
| response, err := r.client.Do(req) |
| if err != nil { |
| return nil, err |
| } |
| return response, nil |
| } |
| |
| func shouldRedirect(response *http.Response) bool { |
| return response.StatusCode >= 300 && response.StatusCode < 400 |
| } |
| |
| // SearchRepositories performs a search against the remote repository |
| func (r *Session) SearchRepositories(term string, limit int) (*registrytypes.SearchResults, error) { |
| if limit < 1 || limit > 100 { |
| return nil, fmt.Errorf("Limit %d is outside the range of [1, 100]", limit) |
| } |
| logrus.Debugf("Index server: %s", r.indexEndpoint) |
| u := r.indexEndpoint.String() + "search?q=" + url.QueryEscape(term) + "&n=" + url.QueryEscape(fmt.Sprintf("%d", limit)) |
| |
| req, err := http.NewRequest("GET", u, nil) |
| if err != nil { |
| return nil, fmt.Errorf("Error while getting from the server: %v", err) |
| } |
| // Have the AuthTransport send authentication, when logged in. |
| req.Header.Set("X-Docker-Token", "true") |
| res, err := r.client.Do(req) |
| if err != nil { |
| return nil, err |
| } |
| defer res.Body.Close() |
| if res.StatusCode != 200 { |
| return nil, httputils.NewHTTPRequestError(fmt.Sprintf("Unexpected status code %d", res.StatusCode), res) |
| } |
| result := new(registrytypes.SearchResults) |
| return result, json.NewDecoder(res.Body).Decode(result) |
| } |
| |
| // GetAuthConfig returns the authentication settings for a session |
| // TODO(tiborvass): remove this once registry client v2 is vendored |
| func (r *Session) GetAuthConfig(withPasswd bool) *types.AuthConfig { |
| password := "" |
| if withPasswd { |
| password = r.authConfig.Password |
| } |
| return &types.AuthConfig{ |
| Username: r.authConfig.Username, |
| Password: password, |
| } |
| } |
| |
| func isTimeout(err error) bool { |
| type timeout interface { |
| Timeout() bool |
| } |
| e := err |
| switch urlErr := err.(type) { |
| case *url.Error: |
| e = urlErr.Err |
| } |
| t, ok := e.(timeout) |
| return ok && t.Timeout() |
| } |