mirror of
https://github.com/matrix-org/dendrite.git
synced 2024-11-27 00:31:55 -06:00
0f09e9d196
This allows us to apply history visibility without having to recalculate it in the roomserver. Unblocks https://github.com/matrix-org/complement/pull/495, fix missing part of https://github.com/matrix-org/dendrite/issues/617
103 lines
3.4 KiB
Go
103 lines
3.4 KiB
Go
// Copyright 2022 The Matrix.org Foundation C.I.C.
|
|
//
|
|
// 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"
|
|
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
"github.com/matrix-org/util"
|
|
"github.com/sirupsen/logrus"
|
|
|
|
"github.com/matrix-org/dendrite/clientapi/jsonerror"
|
|
"github.com/matrix-org/dendrite/roomserver/api"
|
|
"github.com/matrix-org/dendrite/setup/config"
|
|
"github.com/matrix-org/dendrite/syncapi/internal"
|
|
"github.com/matrix-org/dendrite/syncapi/storage"
|
|
userapi "github.com/matrix-org/dendrite/userapi/api"
|
|
)
|
|
|
|
// GetEvent implements
|
|
//
|
|
// GET /_matrix/client/r0/rooms/{roomId}/event/{eventId}
|
|
//
|
|
// https://spec.matrix.org/v1.4/client-server-api/#get_matrixclientv3roomsroomideventeventid
|
|
func GetEvent(
|
|
req *http.Request,
|
|
device *userapi.Device,
|
|
roomID string,
|
|
eventID string,
|
|
cfg *config.SyncAPI,
|
|
syncDB storage.Database,
|
|
rsAPI api.SyncRoomserverAPI,
|
|
) util.JSONResponse {
|
|
ctx := req.Context()
|
|
db, err := syncDB.NewDatabaseTransaction(ctx)
|
|
logger := util.GetLogger(ctx).WithFields(logrus.Fields{
|
|
"event_id": eventID,
|
|
"room_id": roomID,
|
|
})
|
|
if err != nil {
|
|
logger.WithError(err).Error("GetEvent: syncDB.NewDatabaseTransaction failed")
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
|
|
events, err := db.Events(ctx, []string{eventID})
|
|
if err != nil {
|
|
logger.WithError(err).Error("GetEvent: syncDB.Events failed")
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
|
|
// The requested event does not exist in our database
|
|
if len(events) == 0 {
|
|
logger.Debugf("GetEvent: requested event doesn't exist locally")
|
|
return util.JSONResponse{
|
|
Code: http.StatusNotFound,
|
|
JSON: jsonerror.NotFound("The event was not found or you do not have permission to read this event"),
|
|
}
|
|
}
|
|
|
|
// If the request is coming from an appservice, get the user from the request
|
|
userID := device.UserID
|
|
if asUserID := req.FormValue("user_id"); device.AppserviceID != "" && asUserID != "" {
|
|
userID = asUserID
|
|
}
|
|
|
|
// Apply history visibility to determine if the user is allowed to view the event
|
|
events, err = internal.ApplyHistoryVisibilityFilter(ctx, db, rsAPI, events, nil, userID, "event")
|
|
if err != nil {
|
|
logger.WithError(err).Error("GetEvent: internal.ApplyHistoryVisibilityFilter failed")
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: jsonerror.InternalServerError(),
|
|
}
|
|
}
|
|
|
|
// We only ever expect there to be one event
|
|
if len(events) != 1 {
|
|
// 0 events -> not allowed to view event; > 1 events -> something that shouldn't happen
|
|
logger.WithField("event_count", len(events)).Debug("GetEvent: can't return the requested event")
|
|
return util.JSONResponse{
|
|
Code: http.StatusNotFound,
|
|
JSON: jsonerror.NotFound("The event was not found or you do not have permission to read this event"),
|
|
}
|
|
}
|
|
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: gomatrixserverlib.HeaderedToClientEvent(events[0], gomatrixserverlib.FormatAll),
|
|
}
|
|
}
|