Minor refactor, added GET

server/errors.go

@@ -51,6 +51,7 @@ var (
 	errHTTPBadRequestJSONInvalid                     = &errHTTP{40017, http.StatusBadRequest, "invalid request: request body must be message JSON", "https://ntfy.sh/docs/publish/#publish-as-json"}
 	errHTTPBadRequestActionsInvalid                  = &errHTTP{40018, http.StatusBadRequest, "invalid request: actions invalid", "https://ntfy.sh/docs/publish/#action-buttons"}
 	errHTTPBadRequestMatrixMessageInvalid            = &errHTTP{40019, http.StatusBadRequest, "invalid request: Matrix JSON invalid", "https://ntfy.sh/docs/publish/#matrix-gateway"}
+	errHTTPBadRequestMatrixPushkeyBaseURLMismatch    = &errHTTP{40020, http.StatusBadRequest, "invalid request: Push key must be prefixed with base URL", "https://ntfy.sh/docs/publish/#matrix-gateway"}
 	errHTTPNotFound                                  = &errHTTP{40401, http.StatusNotFound, "page not found", ""}
 	errHTTPUnauthorized                              = &errHTTP{40101, http.StatusUnauthorized, "unauthorized", "https://ntfy.sh/docs/publish/#authentication"}
 	errHTTPForbidden                                 = &errHTTP{40301, http.StatusForbidden, "forbidden", "https://ntfy.sh/docs/publish/#authentication"}

server/server.go

@@ -287,6 +287,8 @@ func (s *Server) handleInternal(w http.ResponseWriter, r *http.Request, v *visit
 		return s.ensureWebEnabled(s.handleWebConfig)(w, r, v)
 	} else if r.Method == http.MethodGet && r.URL.Path == userStatsPath {
 		return s.handleUserStats(w, r, v)
+	} else if r.Method == http.MethodGet && r.URL.Path == matrixPushPath {
+		return s.handleMatrixDiscovery(w)
 	} else if r.Method == http.MethodGet && staticRegex.MatchString(r.URL.Path) {
 		return s.ensureWebEnabled(s.handleStatic)(w, r, v)
 	} else if r.Method == http.MethodGet && docsRegex.MatchString(r.URL.Path) {
@@ -428,6 +430,10 @@ func (s *Server) handleFile(w http.ResponseWriter, r *http.Request, v *visitor)
 	return nil
 }
 
+func (s *Server) handleMatrixDiscovery(w http.ResponseWriter) error {
+	return handleMatrixDiscovery(w)
+}
+
 func (s *Server) handlePublishWithoutResponse(r *http.Request, v *visitor) (*message, error) {
 	t, err := s.topicFromPath(r.URL.Path)
 	if err != nil {
@@ -498,22 +504,12 @@ func (s *Server) handlePublish(w http.ResponseWriter, r *http.Request, v *visito
 }
 
 func (s *Server) handlePublishMatrix(w http.ResponseWriter, r *http.Request, v *visitor) error {
-	pushKey := r.Header.Get("X-Matrix-Pushkey")
-	if pushKey == "" {
-		return errHTTPBadRequestMatrixMessageInvalid
-	}
-	response := &matrixResponse{
-		Rejected: make([]string, 0),
-	}
 	_, err := s.handlePublishWithoutResponse(r, v)
 	if err != nil {
-		response.Rejected = append(response.Rejected, pushKey)
+		pushKey := r.Header.Get(matrixPushkeyHeader)
+		return writeMatrixError(w, pushKey, err)
 	}
-	w.Header().Set("Content-Type", "application/json")
-	if err := json.NewEncoder(w).Encode(response); err != nil {
-		return err
-	}
-	return nil
+	return writeMatrixSuccess(w)
 }
 
 func (s *Server) sendToFirebase(v *visitor, m *message) {
@@ -1316,22 +1312,6 @@ func (s *Server) transformBodyJSON(next handleFunc) handleFunc {
 	}
 }
 
-type matrixMessage struct {
-	Notification *matrixNotification `json:"notification"`
-}
-
-type matrixNotification struct {
-	Devices []*matrixDevice `json:"devices"`
-}
-
-type matrixDevice struct {
-	PushKey string `json:"pushkey"`
-}
-
-type matrixResponse struct {
-	Rejected []string `json:"rejected"`
-}
-
 func (s *Server) transformMatrixJSON(next handleFunc) handleFunc {
 	return func(w http.ResponseWriter, r *http.Request, v *visitor) error {
 		if s.config.BaseURL == "" {
@@ -1350,35 +1330,24 @@ func (s *Server) transformMatrixJSON(next handleFunc) handleFunc {
 		}
 		pushKey := m.Notification.Devices[0].PushKey
 		if !strings.HasPrefix(pushKey, s.config.BaseURL+"/") {
-			return matrixError(w, pushKey, errHTTPBadRequestMatrixMessageInvalid)
+			return writeMatrixError(w, pushKey, errHTTPBadRequestMatrixPushkeyBaseURLMismatch)
 		}
 		u, err := url.Parse(pushKey)
 		if err != nil {
-			return matrixError(w, pushKey, errHTTPBadRequestMatrixMessageInvalid)
+			return writeMatrixError(w, pushKey, errHTTPBadRequestMatrixMessageInvalid)
 		}
 		r.URL.Path = u.Path
 		r.URL.RawQuery = u.RawQuery
 		r.RequestURI = u.RequestURI()
 		r.Body = io.NopCloser(bytes.NewReader(body.PeekedBytes))
-		r.Header.Set("X-Matrix-Pushkey", pushKey)
+		r.Header.Set(matrixPushkeyHeader, pushKey)
 		if err := next(w, r, v); err != nil {
-			return matrixError(w, pushKey, errHTTPBadRequestMatrixMessageInvalid)
+			return writeMatrixError(w, pushKey, errHTTPBadRequestMatrixMessageInvalid)
 		}
 		return nil
 	}
 }
 
-func matrixError(w http.ResponseWriter, pushKey string, err error) error {
-	log.Debug("Matrix message with push key %s rejected: %s", pushKey, err.Error())
-	response := &matrixResponse{
-		Rejected: []string{pushKey},
-	}
-	if err := json.NewEncoder(w).Encode(response); err != nil {
-		return err
-	}
-	return nil
-}
-
 func (s *Server) authWrite(next handleFunc) handleFunc {
 	return s.withAuth(next, auth.PermissionWrite)
 }

server/server_matrix.go

@@ -0,0 +1,56 @@
+package server
+
+import (
+	"encoding/json"
+	"heckel.io/ntfy/log"
+	"io"
+	"net/http"
+)
+
+const (
+	matrixPushkeyHeader = "X-Matrix-Pushkey"
+)
+
+type matrixMessage struct {
+	Notification *matrixNotification `json:"notification"`
+}
+
+type matrixNotification struct {
+	Devices []*matrixDevice `json:"devices"`
+}
+
+type matrixDevice struct {
+	PushKey string `json:"pushkey"`
+}
+
+type matrixResponse struct {
+	Rejected []string `json:"rejected"`
+}
+
+func handleMatrixDiscovery(w http.ResponseWriter) error {
+	w.Header().Set("Content-Type", "application/json")
+	_, err := io.WriteString(w, `{"unifiedpush":{"gateway":"matrix"}}`+"\n")
+	return err
+}
+
+func writeMatrixError(w http.ResponseWriter, pushKey string, err error) error {
+	log.Debug("Matrix message with push key %s rejected: %s", pushKey, err.Error())
+	response := &matrixResponse{
+		Rejected: []string{pushKey},
+	}
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		return err
+	}
+	return nil
+}
+
+func writeMatrixSuccess(w http.ResponseWriter) error {
+	response := &matrixResponse{
+		Rejected: make([]string, 0),
+	}
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		return err
+	}
+	return nil
+}

server/server_test.go

@@ -916,6 +916,48 @@ func TestServer_PublishUnifiedPushText(t *testing.T) {
 	require.Equal(t, "this is a unifiedpush text message", m.Message)
 }
 
+func TestServer_MatrixGateway_Discovery(t *testing.T) {
+	s := newTestServer(t, newTestConfig(t))
+	response := request(t, s, "GET", "/_matrix/push/v1/notify", "", nil)
+	require.Equal(t, 200, response.Code)
+	require.Equal(t, `{"unifiedpush":{"gateway":"matrix"}}`+"\n", response.Body.String())
+}
+
+func TestServer_MatrixGateway_Push_Success(t *testing.T) {
+	s := newTestServer(t, newTestConfig(t))
+	notification := `{"notification":{"devices":[{"pushkey":"http://127.0.0.1:12345/mytopic?up=1"}]}}`
+	response := request(t, s, "POST", "/_matrix/push/v1/notify", notification, nil)
+	require.Equal(t, 200, response.Code)
+	require.Equal(t, `{"rejected":[]}`+"\n", response.Body.String())
+
+	response = request(t, s, "GET", "/mytopic/json?poll=1", "", nil)
+	require.Equal(t, 200, response.Code)
+	m := toMessage(t, response.Body.String())
+	require.Equal(t, notification, m.Message)
+}
+
+func TestServer_MatrixGateway_Push_Failure_InvalidPushkey(t *testing.T) {
+	s := newTestServer(t, newTestConfig(t))
+	notification := `{"notification":{"devices":[{"pushkey":"http://wrong-base-url.com/mytopic?up=1"}]}}`
+	response := request(t, s, "POST", "/_matrix/push/v1/notify", notification, nil)
+	require.Equal(t, 200, response.Code)
+	require.Equal(t, `{"rejected":["http://wrong-base-url.com/mytopic?up=1"]}`+"\n", response.Body.String())
+
+	response = request(t, s, "GET", "/mytopic/json?poll=1", "", nil)
+	require.Equal(t, 200, response.Code)
+	require.Equal(t, "", response.Body.String()) // Empty!
+}
+
+func TestServer_MatrixGateway_Push_Failure_EverythingIsWrong(t *testing.T) {
+	s := newTestServer(t, newTestConfig(t))
+	notification := `{"message":"this is not really a Matrix message"}`
+	response := request(t, s, "POST", "/_matrix/push/v1/notify", notification, nil)
+	require.Equal(t, 400, response.Code)
+	err := toHTTPError(t, response.Body.String())
+	require.Equal(t, 40019, err.Code)
+	require.Equal(t, 400, err.HTTPCode)
+}
+
 func TestServer_PublishActions_AndPoll(t *testing.T) {
 	s := newTestServer(t, newTestConfig(t))
 	response := request(t, s, "PUT", "/mytopic", "my message", map[string]string{