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// 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 (
"encoding/json"
"io"
"net/http"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
"github.com/tidwall/gjson"
"github.com/matrix-org/dendrite/syncapi/storage"
"github.com/matrix-org/dendrite/syncapi/sync"
"github.com/matrix-org/dendrite/syncapi/synctypes"
"github.com/matrix-org/dendrite/userapi/api"
"github.com/matrix-org/gomatrixserverlib/spec"
)
// GetFilter implements GET /_matrix/client/r0/user/{userId}/filter/{filterId}
func GetFilter(
req *http.Request, device *api.Device, syncDB storage.Database, userID string, filterID string,
) util.JSONResponse {
if userID != device.UserID {
return util.JSONResponse{
Code: http.StatusForbidden,
JSON: spec.Forbidden("Cannot get filters for other users"),
}
}
localpart, _, err := gomatrixserverlib.SplitID('@', userID)
if err != nil {
util.GetLogger(req.Context()).WithError(err).Error("gomatrixserverlib.SplitID failed")
return spec.InternalServerError()
}
filter := synctypes.DefaultFilter()
if err := syncDB.GetFilter(req.Context(), &filter, localpart, filterID); 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: spec.NotFound("No such filter"),
}
}
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 *api.Device, syncDB storage.Database, userID string,
) util.JSONResponse {
if userID != device.UserID {
return util.JSONResponse{
Code: http.StatusForbidden,
JSON: spec.Forbidden("Cannot create filters for other users"),
}
}
localpart, _, err := gomatrixserverlib.SplitID('@', userID)
if err != nil {
util.GetLogger(req.Context()).WithError(err).Error("gomatrixserverlib.SplitID failed")
return spec.InternalServerError()
}
var filter synctypes.Filter
defer req.Body.Close() // nolint:errcheck
body, err := io.ReadAll(req.Body)
if err != nil {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.BadJSON("The request body could not be read. " + err.Error()),
}
}
if err = json.Unmarshal(body, &filter); err != nil {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.BadJSON("The request body could not be decoded into valid JSON. " + err.Error()),
}
}
// the filter `limit` is `int` which defaults to 0 if not set which is not what we want. We want to use the default
// limit if it is unset, which is what this does.
limitRes := gjson.GetBytes(body, "room.timeline.limit")
if !limitRes.Exists() {
util.GetLogger(req.Context()).Infof("missing timeline limit, using default")
filter.Room.Timeline.Limit = sync.DefaultTimelineLimit
}
// Validate generates a user-friendly error
if err = filter.Validate(); err != nil {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.BadJSON("Invalid filter: " + err.Error()),
}
}
filterID, err := syncDB.PutFilter(req.Context(), localpart, &filter)
if err != nil {
util.GetLogger(req.Context()).WithError(err).Error("syncDB.PutFilter failed")
return spec.InternalServerError()
}
return util.JSONResponse{
Code: http.StatusOK,
JSON: filterResponse{FilterID: filterID},
}
}
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