add legal name check

Signed-off-by: Kay Yan <kay.yan@daocloud.io>

cmd/helm/repo_add.go

@@ -177,6 +177,11 @@ func (o *repoAddOptions) run(out io.Writer) error {
 		InsecureSkipTLSverify: o.insecureSkipTLSverify,
 	}
 
+	// Check If the repo name is legal
+	if strings.Contains(o.name, "/") {
+		return errors.Errorf("repository name (%s) contains '/', please specify a different name without '/'", o.name)
+	}
+
 	// If the repo exists do one of two things:
 	// 1. If the configuration for the name is the same continue without error
 	// 2. When the config is different require --force-update

cmd/helm/repo_add_test.go

@@ -131,6 +131,37 @@ func TestRepoAdd(t *testing.T) {
 	}
 }
 
+func TestRepoAddCheckLegalName(t *testing.T) {
+	ts, err := repotest.NewTempServerWithCleanup(t, "testdata/testserver/*.*")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer ts.Stop()
+	const testRepoName = "test-hub/test-name"
+
+	rootDir := ensure.TempDir(t)
+	repoFile := filepath.Join(ensure.TempDir(t), "repositories.yaml")
+
+	o := &repoAddOptions{
+		name:               testRepoName,
+		url:                ts.URL(),
+		forceUpdate:        false,
+		deprecatedNoUpdate: true,
+		repoFile:           repoFile,
+	}
+	os.Setenv(xdg.CacheHomeEnvVar, rootDir)
+
+	wantErrorMsg := fmt.Sprintf("repository name (%s) contains '/', please specify a different name without '/'", testRepoName)
+
+	if err := o.run(ioutil.Discard); err != nil {
+		if wantErrorMsg != err.Error() {
+			t.Fatalf("Actual error %s, not equal to expected error %s", err, wantErrorMsg)
+		}
+	} else {
+		t.Fatalf("expect reported an error.")
+	}
+}
+
 func TestRepoAddConcurrentGoRoutines(t *testing.T) {
 	const testName = "test-name"
 	repoFile := filepath.Join(ensure.TempDir(t), "repositories.yaml")