Exemplo n.º 1
0
// Push a local image to the registry
func (r *Session) PushImageJSONRegistry(imgData *ImgData, jsonRaw []byte, registry string, token []string) error {

	log.Debugf("[registry] Calling PUT %s", registry+"images/"+imgData.ID+"/json")

	req, err := r.reqFactory.NewRequest("PUT", registry+"images/"+imgData.ID+"/json", bytes.NewReader(jsonRaw))
	if err != nil {
		return err
	}
	req.Header.Add("Content-type", "application/json")
	setTokenAuth(req, token)

	res, _, err := r.doRequest(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 utils.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 utils.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 utils.NewHTTPRequestError(fmt.Sprintf("HTTP code %d while uploading metadata: %s", res.StatusCode, errBody), res)
	}
	return nil
}
Exemplo n.º 2
0
func (r *Session) PushImageLayerRegistry(imgID string, layer io.Reader, registry string, token []string, jsonRaw []byte) (checksum string, checksumPayload string, err error) {

	log.Debugf("[registry] Calling PUT %s", registry+"images/"+imgID+"/layer")

	tarsumLayer := &tarsum.TarSum{Reader: layer}

	h := sha256.New()
	h.Write(jsonRaw)
	h.Write([]byte{'\n'})

	// FIXME: by doing this way, we will produce wrong checksum.
	key, err := utils.GetDefaultKey()
	if err != nil {
		return "", "", fmt.Errorf("Failed to get default key: %v", err)
	}
	checksumLayer, err := utils.AesReadCloserWrapper(key, io.TeeReader(tarsumLayer, h))
	if err != nil {
		return "", "", fmt.Errorf("Failed to create AES read closer: %v", err)
	}

	req, err := r.reqFactory.NewRequest("PUT", registry+"images/"+imgID+"/layer", checksumLayer)
	if err != nil {
		return "", "", err
	}
	req.Header.Add("Content-Type", "application/octet-stream")
	req.Header.Add("X-Docker-Signature", utils.GetSignature(key))
	req.ContentLength = -1
	req.TransferEncoding = []string{"chunked"}
	setTokenAuth(req, token)
	res, _, err := r.doRequest(req)
	if err != nil {
		return "", "", fmt.Errorf("Failed to upload layer: %s", 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 "", "", utils.NewHTTPRequestError(fmt.Sprintf("HTTP code %d while uploading metadata and error when trying to parse response body: %s", res.StatusCode, err), res)
		}
		return "", "", utils.NewHTTPRequestError(fmt.Sprintf("Received HTTP code %d while uploading layer: %s", res.StatusCode, errBody), res)
	}

	checksumPayload = "sha256:" + hex.EncodeToString(h.Sum(nil))
	return tarsumLayer.Sum(jsonRaw), checksumPayload, nil
}
Exemplo n.º 3
0
// Retrieve the history of a given image from the Registry.
// Return a list of the parent's json (requested image included)
func (r *Session) GetRemoteHistory(imgID, registry string, token []string) ([]string, error) {
	req, err := r.reqFactory.NewRequest("GET", registry+"images/"+imgID+"/ancestry", nil)
	if err != nil {
		return nil, err
	}
	setTokenAuth(req, token)
	res, _, err := r.doRequest(req)
	if err != nil {
		return nil, err
	}
	defer res.Body.Close()
	if res.StatusCode != 200 {
		if res.StatusCode == 401 {
			return nil, errLoginRequired
		}
		return nil, utils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to fetch remote history for %s", res.StatusCode, imgID), res)
	}

	jsonString, err := ioutil.ReadAll(res.Body)
	if err != nil {
		return nil, fmt.Errorf("Error while reading the http response: %s", err)
	}

	log.Debugf("Ancestry: %s", jsonString)
	history := new([]string)
	if err := json.Unmarshal(jsonString, history); err != nil {
		return nil, err
	}
	return *history, nil
}
Exemplo n.º 4
0
func (r *Session) SearchRepositories(term string) (*SearchResults, error) {
	log.Debugf("Index server: %s", r.indexEndpoint)
	u := r.indexEndpoint + "search?q=" + url.QueryEscape(term)
	req, err := r.reqFactory.NewRequest("GET", u, nil)
	if err != nil {
		return nil, err
	}
	if r.authConfig != nil && len(r.authConfig.Username) > 0 {
		req.SetBasicAuth(r.authConfig.Username, r.authConfig.Password)
	}
	req.Header.Set("X-Docker-Token", "true")
	res, _, err := r.doRequest(req)
	if err != nil {
		return nil, err
	}
	defer res.Body.Close()
	if res.StatusCode != 200 {
		return nil, utils.NewHTTPRequestError(fmt.Sprintf("Unexepected status code %d", res.StatusCode), res)
	}
	rawData, err := ioutil.ReadAll(res.Body)
	if err != nil {
		return nil, err
	}
	result := new(SearchResults)
	err = json.Unmarshal(rawData, result)
	return result, err
}
Exemplo n.º 5
0
// Retrieve an image from the Registry.
func (r *Session) GetRemoteImageJSON(imgID, registry string, token []string) ([]byte, int, error) {
	// Get the JSON
	req, err := r.reqFactory.NewRequest("GET", registry+"images/"+imgID+"/json", nil)
	if err != nil {
		return nil, -1, fmt.Errorf("Failed to download json: %s", err)
	}

	// FIXME: check if it is encrypted.
	key, err := utils.GetDefaultKey()
	if err != nil {
		return nil, -1, fmt.Errorf("Failed to get default key: %v", err)
	}
	req.Header.Add("X-Docker-Signature", utils.GetSignature(key))
	setTokenAuth(req, token)
	res, _, err := r.doRequest(req)
	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, utils.NewHTTPRequestError(fmt.Sprintf("HTTP code %d", res.StatusCode), res)
	}

	// TODO: check if server supports encrypt.

	// if the size header is not present, then set it to '-1'
	imageSize := -1
	if hdr := res.Header.Get("X-Docker-Size"); hdr != "" {
		imageSize, err = strconv.Atoi(hdr)
		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: %s (%s)", err, jsonString)
	}
	return jsonString, imageSize, nil
}
Exemplo n.º 6
0
// push a tag on the registry.
// Remote has the format '<user>/<repo>
func (r *Session) PushRegistryTag(remote, revision, tag, registry string, token []string) error {
	// "jsonify" the string
	revision = "\"" + revision + "\""
	path := fmt.Sprintf("repositories/%s/tags/%s", remote, tag)

	req, err := r.reqFactory.NewRequest("PUT", registry+path, strings.NewReader(revision))
	if err != nil {
		return err
	}
	req.Header.Add("Content-type", "application/json")
	setTokenAuth(req, token)
	req.ContentLength = int64(len(revision))
	res, _, err := r.doRequest(req)
	if err != nil {
		return err
	}
	res.Body.Close()
	if res.StatusCode != 200 && res.StatusCode != 201 {
		return utils.NewHTTPRequestError(fmt.Sprintf("Internal server error: %d trying to push tag %s on %s", res.StatusCode, tag, remote), res)
	}
	return nil
}
Exemplo n.º 7
0
func (r *Session) PushImageJSONIndex(remote string, imgList []*ImgData, validate bool, regs []string) (*RepositoryData, error) {
	cleanImgList := []*ImgData{}
	indexEp := r.indexEndpoint

	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", indexEp, remote, suffix)
	log.Debugf("[registry] PUT %s", u)
	log.Debugf("Image list pushed to index:\n%s", imgListJSON)
	req, err := r.reqFactory.NewRequest("PUT", u, bytes.NewReader(imgListJSON))
	if err != nil {
		return nil, err
	}
	req.Header.Add("Content-type", "application/json")
	req.SetBasicAuth(r.authConfig.Username, r.authConfig.Password)
	req.ContentLength = int64(len(imgListJSON))
	req.Header.Set("X-Docker-Token", "true")
	if validate {
		req.Header["X-Docker-Endpoints"] = regs
	}

	res, _, err := r.doRequest(req)
	if err != nil {
		return nil, err
	}
	defer res.Body.Close()

	// FIXME:
	if len(res.Header.Get("X-Docker-Signature")) == 0 {

	}

	// Redirect if necessary
	for res.StatusCode >= 300 && res.StatusCode < 400 {
		log.Debugf("Redirected to %s", res.Header.Get("Location"))
		req, err = r.reqFactory.NewRequest("PUT", res.Header.Get("Location"), bytes.NewReader(imgListJSON))
		if err != nil {
			return nil, err
		}
		req.SetBasicAuth(r.authConfig.Username, r.authConfig.Password)
		req.ContentLength = int64(len(imgListJSON))
		req.Header.Set("X-Docker-Token", "true")
		if validate {
			req.Header["X-Docker-Endpoints"] = regs
		}
		res, _, err := r.doRequest(req)
		if err != nil {
			return nil, err
		}
		defer res.Body.Close()

		// TODO: add check here, too.
	}

	var tokens, endpoints []string
	if !validate {
		if res.StatusCode != 200 && res.StatusCode != 201 {
			errBody, err := ioutil.ReadAll(res.Body)
			if err != nil {
				return nil, err
			}
			return nil, utils.NewHTTPRequestError(fmt.Sprintf("Error: Status %d trying to push repository %s: %s", res.StatusCode, remote, errBody), res)
		}
		if res.Header.Get("X-Docker-Token") != "" {
			tokens = res.Header["X-Docker-Token"]
			log.Debugf("Auth token: %v", tokens)
		} else {
			return nil, fmt.Errorf("Index response didn't contain an access token")
		}

		if res.Header.Get("X-Docker-Endpoints") != "" {
			endpoints, err = buildEndpointsList(res.Header["X-Docker-Endpoints"], indexEp)
			if err != nil {
				return nil, err
			}
		} else {
			return nil, fmt.Errorf("Index response didn't contain any endpoints")
		}
	}
	if validate {
		if res.StatusCode != 204 {
			errBody, err := ioutil.ReadAll(res.Body)
			if err != nil {
				return nil, err
			}
			return nil, utils.NewHTTPRequestError(fmt.Sprintf("Error: Status %d trying to push checksums %s: %s", res.StatusCode, remote, errBody), res)
		}
	}

	return &RepositoryData{
		Tokens:    tokens,
		Endpoints: endpoints,
	}, nil
}
Exemplo n.º 8
0
func (r *Session) GetRepositoryData(remote string) (*RepositoryData, error) {
	indexEp := r.indexEndpoint
	repositoryTarget := fmt.Sprintf("%srepositories/%s/images", indexEp, remote)

	log.Debugf("[registry] Calling GET %s", repositoryTarget)

	req, err := r.reqFactory.NewRequest("GET", repositoryTarget, nil)
	if err != nil {
		return nil, err
	}
	if r.authConfig != nil && len(r.authConfig.Username) > 0 {
		req.SetBasicAuth(r.authConfig.Username, r.authConfig.Password)
	}
	req.Header.Set("X-Docker-Token", "true")

	res, _, err := r.doRequest(req)
	if err != nil {
		return nil, err
	}
	defer res.Body.Close()
	if res.StatusCode == 401 {
		return nil, errLoginRequired
	}
	// 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 != 200 {
		return nil, utils.NewHTTPRequestError(fmt.Sprintf("HTTP code: %d", res.StatusCode), res)
	}

	var tokens []string
	if res.Header.Get("X-Docker-Token") != "" {
		tokens = res.Header["X-Docker-Token"]
	}

	var endpoints []string
	if res.Header.Get("X-Docker-Endpoints") != "" {
		endpoints, err = buildEndpointsList(res.Header["X-Docker-Endpoints"], indexEp)
		if err != nil {
			return nil, err
		}
	} else {
		// Assume the endpoint is on the same host
		u, err := url.Parse(indexEp)
		if err != nil {
			return nil, err
		}
		endpoints = append(endpoints, fmt.Sprintf("%s://%s/v1/", u.Scheme, req.URL.Host))
	}

	checksumsJSON, err := ioutil.ReadAll(res.Body)
	if err != nil {
		return nil, err
	}
	remoteChecksums := []*ImgData{}
	if err := json.Unmarshal(checksumsJSON, &remoteChecksums); err != nil {
		return nil, err
	}

	// Forge a better object from the retrieved data
	imgsData := make(map[string]*ImgData)
	for _, elem := range remoteChecksums {
		imgsData[elem.ID] = elem
	}

	return &RepositoryData{
		ImgList:   imgsData,
		Endpoints: endpoints,
		Tokens:    tokens,
	}, nil
}