use go module for dependencies (#594)

clientapi/routing/filter.go

@@ -0,0 +1,123 @@
+// Copyright 2017 Jan Christian Grünhage
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package routing
+
+import (
+	"net/http"
+
+	"encoding/json"
+
+	"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
+	"github.com/matrix-org/dendrite/clientapi/auth/storage/accounts"
+	"github.com/matrix-org/dendrite/clientapi/httputil"
+	"github.com/matrix-org/dendrite/clientapi/jsonerror"
+	"github.com/matrix-org/gomatrix"
+	"github.com/matrix-org/gomatrixserverlib"
+	"github.com/matrix-org/util"
+)
+
+// GetFilter implements GET /_matrix/client/r0/user/{userId}/filter/{filterId}
+func GetFilter(
+	req *http.Request, device *authtypes.Device, accountDB *accounts.Database, userID string, filterID string,
+) util.JSONResponse {
+	if req.Method != http.MethodGet {
+		return util.JSONResponse{
+			Code: http.StatusMethodNotAllowed,
+			JSON: jsonerror.NotFound("Bad method"),
+		}
+	}
+	if userID != device.UserID {
+		return util.JSONResponse{
+			Code: http.StatusForbidden,
+			JSON: jsonerror.Forbidden("Cannot get filters for other users"),
+		}
+	}
+	localpart, _, err := gomatrixserverlib.SplitID('@', userID)
+	if err != nil {
+		return httputil.LogThenError(req, err)
+	}
+
+	res, err := accountDB.GetFilter(req.Context(), localpart, filterID)
+	if err != nil {
+		//TODO better error handling. This error message is *probably* right,
+		// but if there are obscure db errors, this will also be returned,
+		// even though it is not correct.
+		return util.JSONResponse{
+			Code: http.StatusBadRequest,
+			JSON: jsonerror.NotFound("No such filter"),
+		}
+	}
+	filter := gomatrix.Filter{}
+	err = json.Unmarshal(res, &filter)
+	if err != nil {
+		httputil.LogThenError(req, err)
+	}
+
+	return util.JSONResponse{
+		Code: http.StatusOK,
+		JSON: filter,
+	}
+}
+
+type filterResponse struct {
+	FilterID string `json:"filter_id"`
+}
+
+//PutFilter implements POST /_matrix/client/r0/user/{userId}/filter
+func PutFilter(
+	req *http.Request, device *authtypes.Device, accountDB *accounts.Database, userID string,
+) util.JSONResponse {
+	if req.Method != http.MethodPost {
+		return util.JSONResponse{
+			Code: http.StatusMethodNotAllowed,
+			JSON: jsonerror.NotFound("Bad method"),
+		}
+	}
+	if userID != device.UserID {
+		return util.JSONResponse{
+			Code: http.StatusForbidden,
+			JSON: jsonerror.Forbidden("Cannot create filters for other users"),
+		}
+	}
+
+	localpart, _, err := gomatrixserverlib.SplitID('@', userID)
+	if err != nil {
+		return httputil.LogThenError(req, err)
+	}
+
+	var filter gomatrix.Filter
+
+	if reqErr := httputil.UnmarshalJSONRequest(req, &filter); reqErr != nil {
+		return *reqErr
+	}
+
+	filterArray, err := json.Marshal(filter)
+	if err != nil {
+		return util.JSONResponse{
+			Code: http.StatusBadRequest,
+			JSON: jsonerror.BadJSON("Filter is malformed"),
+		}
+	}
+
+	filterID, err := accountDB.PutFilter(req.Context(), localpart, filterArray)
+	if err != nil {
+		return httputil.LogThenError(req, err)
+	}
+
+	return util.JSONResponse{
+		Code: http.StatusOK,
+		JSON: filterResponse{FilterID: filterID},
+	}
+}