Vendor in latest containers/image

Latest containers/image has support for searching registries.

Signed-off-by: umohnani8 <umohnani@redhat.com>

Closes: #241
Approved by: rhatdan

vendor/github.com/containers/image/directory/directory_dest.go

@@ -70,7 +70,7 @@ func newImageDestination(ref dirReference, compress bool) (types.ImageDestinatio
 		}
 	}
 	// create version file
-	err = ioutil.WriteFile(d.ref.versionPath(), []byte(version), 0755)
+	err = ioutil.WriteFile(d.ref.versionPath(), []byte(version), 0644)
 	if err != nil {
 		return nil, errors.Wrapf(err, "error creating version file %q", d.ref.versionPath())
 	}

vendor/github.com/containers/image/docker/docker_client.go

@@ -8,7 +8,9 @@ import (
 	"io"
 	"io/ioutil"
 	"net/http"
+	"net/url"
 	"path/filepath"
+	"strconv"
 	"strings"
 	"time"
 
@@ -24,8 +26,9 @@ import (
 )
 
 const (
-	dockerHostname = "docker.io"
-	dockerRegistry = "registry-1.docker.io"
+	dockerHostname   = "docker.io"
+	dockerV1Hostname = "index.docker.io"
+	dockerRegistry   = "registry-1.docker.io"
 
 	systemPerHostCertDirPath = "/etc/docker/certs.d"
 
@@ -66,9 +69,10 @@ type extensionSignatureList struct {
 }
 
 type bearerToken struct {
-	Token     string    `json:"token"`
-	ExpiresIn int       `json:"expires_in"`
-	IssuedAt  time.Time `json:"issued_at"`
+	Token       string    `json:"token"`
+	AccessToken string    `json:"access_token"`
+	ExpiresIn   int       `json:"expires_in"`
+	IssuedAt    time.Time `json:"issued_at"`
 }
 
 // dockerClient is configuration for dealing with a single Docker registry.
@@ -96,6 +100,24 @@ type authScope struct {
 	actions    string
 }
 
+func newBearerTokenFromJSONBlob(blob []byte) (*bearerToken, error) {
+	token := new(bearerToken)
+	if err := json.Unmarshal(blob, &token); err != nil {
+		return nil, err
+	}
+	if token.Token == "" {
+		token.Token = token.AccessToken
+	}
+	if token.ExpiresIn < minimumTokenLifetimeSeconds {
+		token.ExpiresIn = minimumTokenLifetimeSeconds
+		logrus.Debugf("Increasing token expiration to: %d seconds", token.ExpiresIn)
+	}
+	if token.IssuedAt.IsZero() {
+		token.IssuedAt = time.Now().UTC()
+	}
+	return token, nil
+}
+
 // this is cloned from docker/go-connections because upstream docker has changed
 // it and make deps here fails otherwise.
 // We'll drop this once we upgrade to docker 1.13.x deps.
@@ -202,6 +224,100 @@ func CheckAuth(ctx context.Context, sCtx *types.SystemContext, username, passwor
 	}
 }
 
+// SearchResult holds the information of each matching image
+// It matches the output returned by the v1 endpoint
+type SearchResult struct {
+	Name        string `json:"name"`
+	Description string `json:"description"`
+	// StarCount states the number of stars the image has
+	StarCount int  `json:"star_count"`
+	IsTrusted bool `json:"is_trusted"`
+	// IsAutomated states whether the image is an automated build
+	IsAutomated bool `json:"is_automated"`
+	// IsOfficial states whether the image is an official build
+	IsOfficial bool `json:"is_official"`
+}
+
+// SearchRegistry queries a registry for images that contain "image" in their name
+// The limit is the max number of results desired
+// Note: The limit value doesn't work with all registries
+// for example registry.access.redhat.com returns all the results without limiting it to the limit value
+func SearchRegistry(ctx context.Context, sCtx *types.SystemContext, registry, image string, limit int) ([]SearchResult, error) {
+	type V2Results struct {
+		// Repositories holds the results returned by the /v2/_catalog endpoint
+		Repositories []string `json:"repositories"`
+	}
+	type V1Results struct {
+		// Results holds the results returned by the /v1/search endpoint
+		Results []SearchResult `json:"results"`
+	}
+	v2Res := &V2Results{}
+	v1Res := &V1Results{}
+
+	// The /v2/_catalog endpoint has been disabled for docker.io therefore the call made to that endpoint will fail
+	// So using the v1 hostname for docker.io for simplicity of implementation and the fact that it returns search results
+	if registry == dockerHostname {
+		registry = dockerV1Hostname
+	}
+
+	client, err := newDockerClientWithDetails(sCtx, registry, "", "", "", nil, "")
+	if err != nil {
+		return nil, errors.Wrapf(err, "error creating new docker client")
+	}
+
+	logrus.Debugf("trying to talk to v2 search endpoint\n")
+	resp, err := client.makeRequest(ctx, "GET", "/v2/_catalog", nil, nil)
+	if err != nil {
+		logrus.Debugf("error getting search results from v2 endpoint %q: %v", registry, err)
+	} else {
+		defer resp.Body.Close()
+		if resp.StatusCode != http.StatusOK {
+			logrus.Debugf("error getting search results from v2 endpoint %q, status code %q", registry, resp.StatusCode)
+		} else {
+			if err := json.NewDecoder(resp.Body).Decode(v2Res); err != nil {
+				return nil, err
+			}
+			searchRes := []SearchResult{}
+			for _, repo := range v2Res.Repositories {
+				if strings.Contains(repo, image) {
+					res := SearchResult{
+						Name: repo,
+					}
+					searchRes = append(searchRes, res)
+				}
+			}
+			return searchRes, nil
+		}
+	}
+
+	// set up the query values for the v1 endpoint
+	u := url.URL{
+		Path: "/v1/search",
+	}
+	q := u.Query()
+	q.Set("q", image)
+	q.Set("n", strconv.Itoa(limit))
+	u.RawQuery = q.Encode()
+
+	logrus.Debugf("trying to talk to v1 search endpoint\n")
+	resp, err = client.makeRequest(ctx, "GET", u.String(), nil, nil)
+	if err != nil {
+		logrus.Debugf("error getting search results from v1 endpoint %q: %v", registry, err)
+	} else {
+		defer resp.Body.Close()
+		if resp.StatusCode != http.StatusOK {
+			logrus.Debugf("error getting search results from v1 endpoint %q, status code %q", registry, resp.StatusCode)
+		} else {
+			if err := json.NewDecoder(resp.Body).Decode(v1Res); err != nil {
+				return nil, err
+			}
+			return v1Res.Results, nil
+		}
+	}
+
+	return nil, errors.Wrapf(err, "couldn't search registry %q", registry)
+}
+
 // makeRequest creates and executes a http.Request with the specified parameters, adding authentication and TLS options for the Docker client.
 // The host name and schema is taken from the client or autodetected, and the path is relative to it, i.e. the path usually starts with /v2/.
 func (c *dockerClient) makeRequest(ctx context.Context, method, path string, headers map[string][]string, stream io.Reader) (*http.Response, error) {
@@ -332,18 +448,8 @@ func (c *dockerClient) getBearerToken(ctx context.Context, realm, service, scope
 	if err != nil {
 		return nil, err
 	}
-	var token bearerToken
-	if err := json.Unmarshal(tokenBlob, &token); err != nil {
-		return nil, err
-	}
-	if token.ExpiresIn < minimumTokenLifetimeSeconds {
-		token.ExpiresIn = minimumTokenLifetimeSeconds
-		logrus.Debugf("Increasing token expiration to: %d seconds", token.ExpiresIn)
-	}
-	if token.IssuedAt.IsZero() {
-		token.IssuedAt = time.Now().UTC()
-	}
-	return &token, nil
+
+	return newBearerTokenFromJSONBlob(tokenBlob)
 }
 
 // detectProperties detects various properties of the registry.

vendor/github.com/containers/image/docker/docker_image_dest.go

@@ -131,7 +131,7 @@ func (d *dockerImageDestination) PutBlob(stream io.Reader, inputInfo types.BlobI
 	defer res.Body.Close()
 	if res.StatusCode != http.StatusAccepted {
 		logrus.Debugf("Error initiating layer upload, response %#v", *res)
-		return types.BlobInfo{}, errors.Errorf("Error initiating layer upload to %s, status %d", uploadPath, res.StatusCode)
+		return types.BlobInfo{}, errors.Wrapf(client.HandleErrorResponse(res), "Error initiating layer upload to %s", uploadPath)
 	}
 	uploadLocation, err := res.Location()
 	if err != nil {
@@ -167,7 +167,7 @@ func (d *dockerImageDestination) PutBlob(stream io.Reader, inputInfo types.BlobI
 	defer res.Body.Close()
 	if res.StatusCode != http.StatusCreated {
 		logrus.Debugf("Error uploading layer, response %#v", *res)
-		return types.BlobInfo{}, errors.Errorf("Error uploading layer to %s, status %d", uploadLocation, res.StatusCode)
+		return types.BlobInfo{}, errors.Wrapf(client.HandleErrorResponse(res), "Error uploading layer to %s", uploadLocation)
 	}
 
 	logrus.Debugf("Upload of layer %s complete", computedDigest)
@@ -196,7 +196,7 @@ func (d *dockerImageDestination) HasBlob(info types.BlobInfo) (bool, int64, erro
 		return true, getBlobSize(res), nil
 	case http.StatusUnauthorized:
 		logrus.Debugf("... not authorized")
-		return false, -1, errors.Errorf("not authorized to read from destination repository %s", reference.Path(d.ref.ref))
+		return false, -1, client.HandleErrorResponse(res)
 	case http.StatusNotFound:
 		logrus.Debugf("... not present")
 		return false, -1, nil
@@ -447,7 +447,7 @@ sigExists:
 				logrus.Debugf("Error body %s", string(body))
 			}
 			logrus.Debugf("Error uploading signature, status %d, %#v", res.StatusCode, res)
-			return errors.Errorf("Error uploading signature to %s, status %d", path, res.StatusCode)
+			return errors.Wrapf(client.HandleErrorResponse(res), "Error uploading signature to %s", path)
 		}
 	}
 

vendor/github.com/containers/image/image/oci.go

@@ -149,6 +149,16 @@ func (m *manifestOCI1) UpdatedImage(options types.ManifestUpdateOptions) (types.
 
 	switch options.ManifestMIMEType {
 	case "": // No conversion, OK
+	case manifest.DockerV2Schema1MediaType, manifest.DockerV2Schema1SignedMediaType:
+		// We can't directly convert to V1, but we can transitively convert via a V2 image
+		m2, err := copy.convertToManifestSchema2()
+		if err != nil {
+			return nil, err
+		}
+		return m2.UpdatedImage(types.ManifestUpdateOptions{
+			ManifestMIMEType: options.ManifestMIMEType,
+			InformationOnly:  options.InformationOnly,
+		})
 	case manifest.DockerV2Schema2MediaType:
 		return copy.convertToManifestSchema2()
 	default:

vendor/github.com/containers/image/ostree/ostree_dest.go

@@ -14,6 +14,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"strconv"
+	"strings"
 	"syscall"
 	"time"
 	"unsafe"
@@ -175,7 +176,10 @@ func fixFiles(selinuxHnd *C.struct_selabel_handle, root string, dir string, user
 			if err != nil {
 				return err
 			}
-			relPath = fmt.Sprintf("/%s", relPath)
+			// Handle /exports/hostfs as a special case.  Files under this directory are copied to the host,
+			// thus we benefit from maintaining the same SELinux label they would have on the host as we could
+			// use hard links instead of copying the files.
+			relPath = fmt.Sprintf("/%s", strings.TrimPrefix(relPath, "exports/hostfs/"))
 
 			relPathC := C.CString(relPath)
 			defer C.free(unsafe.Pointer(relPathC))
@@ -237,7 +241,7 @@ func generateTarSplitMetadata(output *bytes.Buffer, file string) error {
 	}
 	defer stream.Close()
 
-	gzReader, err := gzip.NewReader(stream)
+	gzReader, err := archive.DecompressStream(stream)
 	if err != nil {
 		return err
 	}
@@ -383,7 +387,7 @@ func (d *ostreeImageDestination) Commit() error {
 	var selinuxHnd *C.struct_selabel_handle
 
 	if os.Getuid() == 0 && selinux.GetEnabled() {
-		selinuxHnd, err := C.selabel_open(C.SELABEL_CTX_FILE, nil, 0)
+		selinuxHnd, err = C.selabel_open(C.SELABEL_CTX_FILE, nil, 0)
 		if selinuxHnd == nil {
 			return errors.Wrapf(err, "cannot open the SELinux DB")
 		}

vendor/github.com/containers/image/tarball/tarball_reference.go

@@ -89,5 +89,5 @@ func (r *tarballReference) DeleteImage(ctx *types.SystemContext) error {
 }
 
 func (r *tarballReference) NewImageDestination(ctx *types.SystemContext) (types.ImageDestination, error) {
-	return nil, fmt.Errorf("destination not implemented yet")
+	return nil, fmt.Errorf(`"tarball:" locations can only be read from, not written to`)
 }