add multiple manifest intercepetor handler

1, Add a interceptor to block request to upload manifest list
2, Discard notiification without tag.

Signed-off-by: wang yan <wangyan@vmware.com>

src/core/proxy/interceptor_test.go

@@ -79,6 +79,53 @@ func TestMatchPullManifest(t *testing.T) {
 	assert.Equal("sha256:ca4626b691f57d16ce1576231e4a2e2135554d32e13a85dcff380d51fdd13f6a", tag7)
 }
 
+func TestMatchPushManifest(t *testing.T) {
+	assert := assert.New(t)
+	req1, _ := http.NewRequest("POST", "http://127.0.0.1:5000/v2/library/ubuntu/manifests/14.04", nil)
+	res1, _, _ := MatchPushManifest(req1)
+	assert.False(res1, "%s %v is not a request to push manifest", req1.Method, req1.URL)
+
+	req2, _ := http.NewRequest("PUT", "http://192.168.0.3:80/v2/library/ubuntu/manifests/14.04", nil)
+	res2, repo2, tag2 := MatchPushManifest(req2)
+	assert.True(res2, "%s %v is a request to push manifest", req2.Method, req2.URL)
+	assert.Equal("library/ubuntu", repo2)
+	assert.Equal("14.04", tag2)
+
+	req3, _ := http.NewRequest("GET", "https://192.168.0.5:443/v1/library/ubuntu/manifests/14.04", nil)
+	res3, _, _ := MatchPushManifest(req3)
+	assert.False(res3, "%s %v is not a request to push manifest", req3.Method, req3.URL)
+
+	req4, _ := http.NewRequest("PUT", "https://192.168.0.5/v2/library/ubuntu/manifests/14.04", nil)
+	res4, repo4, tag4 := MatchPushManifest(req4)
+	assert.True(res4, "%s %v is a request to push manifest", req4.Method, req4.URL)
+	assert.Equal("library/ubuntu", repo4)
+	assert.Equal("14.04", tag4)
+
+	req5, _ := http.NewRequest("PUT", "https://myregistry.com/v2/path1/path2/golang/manifests/1.6.2", nil)
+	res5, repo5, tag5 := MatchPushManifest(req5)
+	assert.True(res5, "%s %v is a request to push manifest", req5.Method, req5.URL)
+	assert.Equal("path1/path2/golang", repo5)
+	assert.Equal("1.6.2", tag5)
+
+	req6, _ := http.NewRequest("PUT", "https://myregistry.com/v2/myproject/registry/manifests/sha256:ca4626b691f57d16ce1576231e4a2e2135554d32e13a85dcff380d51fdd13f6a", nil)
+	res6, repo6, tag6 := MatchPushManifest(req6)
+	assert.True(res6, "%s %v is a request to push manifest", req6.Method, req6.URL)
+	assert.Equal("myproject/registry", repo6)
+	assert.Equal("sha256:ca4626b691f57d16ce1576231e4a2e2135554d32e13a85dcff380d51fdd13f6a", tag6)
+
+	req7, _ := http.NewRequest("PUT", "https://myregistry.com/v2/myproject/manifests/sha256:ca4626b691f57d16ce1576231e4a2e2135554d32e13a85dcff380d51fdd13f6a", nil)
+	res7, repo7, tag7 := MatchPushManifest(req7)
+	assert.True(res7, "%s %v is a request to push manifest", req7.Method, req7.URL)
+	assert.Equal("myproject", repo7)
+	assert.Equal("sha256:ca4626b691f57d16ce1576231e4a2e2135554d32e13a85dcff380d51fdd13f6a", tag7)
+
+	req8, _ := http.NewRequest("PUT", "http://192.168.0.3:80/v2/library/ubuntu/manifests/14.04", nil)
+	res8, repo8, tag8 := MatchPushManifest(req8)
+	assert.True(res8, "%s %v is a request to push manifest", req8.Method, req8.URL)
+	assert.Equal("library/ubuntu", repo8)
+	assert.Equal("14.04", tag8)
+}
+
 func TestMatchListRepos(t *testing.T) {
 	assert := assert.New(t)
 	req1, _ := http.NewRequest("POST", "http://127.0.0.1:5000/v2/_catalog", nil)

src/core/proxy/interceptors.go

@@ -43,6 +43,18 @@ func MatchPullManifest(req *http.Request) (bool, string, string) {
 	if req.Method != http.MethodGet {
 		return false, "", ""
 	}
+	return matchManifestURL(req)
+}
+
+// MatchPushManifest checks if the request looks like a request to push manifest.  If it is returns the image and tag/sha256 digest as 2nd and 3rd return values
+func MatchPushManifest(req *http.Request) (bool, string, string) {
+	if req.Method != http.MethodPut {
+		return false, "", ""
+	}
+	return matchManifestURL(req)
+}
+
+func matchManifestURL(req *http.Request) (bool, string, string) {
 	re := regexp.MustCompile(manifestURLPattern)
 	s := re.FindStringSubmatch(req.URL.Path)
 	if len(s) == 3 {
@@ -168,6 +180,25 @@ func (rh readonlyHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 	rh.next.ServeHTTP(rw, req)
 }
 
+type multipleManifestHandler struct {
+	next http.Handler
+}
+
+// The handler is responsible for blocking request to upload manifest list by docker client, which is not supported so far by Harbor.
+func (mh multipleManifestHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
+	match, _, _ := MatchPushManifest(req)
+	if match {
+		contentType := req.Header.Get("Content-type")
+		// application/vnd.docker.distribution.manifest.list.v2+json
+		if strings.Contains(contentType, "manifest.list.v2") {
+			log.Debugf("Content-type: %s is not supported, failing the response.", contentType)
+			http.Error(rw, marshalError("UNSUPPORTED_MEDIA_TYPE", "Manifest.list is not supported."), http.StatusUnsupportedMediaType)
+			return
+		}
+	}
+	mh.next.ServeHTTP(rw, req)
+}
+
 type listReposHandler struct {
 	next http.Handler
 }

src/core/proxy/proxy.go

@@ -38,7 +38,7 @@ func Init(urls ...string) error {
 		return err
 	}
 	Proxy = httputil.NewSingleHostReverseProxy(targetURL)
-	handlers = handlerChain{head: readonlyHandler{next: urlHandler{next: listReposHandler{next: contentTrustHandler{next: vulnerableHandler{next: Proxy}}}}}}
+	handlers = handlerChain{head: readonlyHandler{next: urlHandler{next: multipleManifestHandler{next: listReposHandler{next: contentTrustHandler{next: vulnerableHandler{next: Proxy}}}}}}}
 	return nil
 }
 

src/core/service/notifications/registry/handler.go

@@ -93,6 +93,8 @@ func (n *NotificationHandler) Post() {
 		}()
 
 		if action == "push" {
+			// discard the notification without tag.
+			if tag != "" {
 				go func() {
 					exist := dao.RepositoryExists(repository)
 					if exist {
@@ -107,6 +109,8 @@ func (n *NotificationHandler) Post() {
 						log.Errorf("Error happens when adding repository: %v", err)
 					}
 				}()
+			}
+
 			if !coreutils.WaitForManifestReady(repository, tag, 5) {
 				log.Errorf("Manifest for image %s:%s is not ready, skip the follow up actions.", repository, tag)
 				return