128 lines
4.0 KiB
Go
128 lines
4.0 KiB
Go
// Copyright 2019 Alex Chen
|
|
//
|
|
// 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/dendrite/clientapi/jsonerror"
|
|
"github.com/matrix-org/dendrite/roomserver/api"
|
|
"github.com/matrix-org/dendrite/setup/config"
|
|
userapi "github.com/matrix-org/dendrite/userapi/api"
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
"github.com/matrix-org/util"
|
|
)
|
|
|
|
type getEventRequest struct {
|
|
req *http.Request
|
|
device *userapi.Device
|
|
roomID string
|
|
eventID string
|
|
cfg *config.ClientAPI
|
|
federation *gomatrixserverlib.FederationClient
|
|
requestedEvent *gomatrixserverlib.Event
|
|
}
|
|
|
|
// GetEvent implements GET /_matrix/client/r0/rooms/{roomId}/event/{eventId}
|
|
// https://matrix.org/docs/spec/client_server/r0.4.0.html#get-matrix-client-r0-rooms-roomid-event-eventid
|
|
func GetEvent(
|
|
req *http.Request,
|
|
device *userapi.Device,
|
|
roomID string,
|
|
eventID string,
|
|
cfg *config.ClientAPI,
|
|
rsAPI api.RoomserverInternalAPI,
|
|
federation *gomatrixserverlib.FederationClient,
|
|
) util.JSONResponse {
|
|
eventsReq := api.QueryEventsByIDRequest{
|
|
EventIDs: []string{eventID},
|
|
}
|
|
var eventsResp api.QueryEventsByIDResponse
|
|
err := rsAPI.QueryEventsByID(req.Context(), &eventsReq, &eventsResp)
|
|
if err != nil {
|
|
util.GetLogger(req.Context()).WithError(err).Error("queryAPI.QueryEventsByID failed")
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
|
|
if len(eventsResp.Events) == 0 {
|
|
// Event not found 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"),
|
|
}
|
|
}
|
|
|
|
requestedEvent := eventsResp.Events[0].Event
|
|
|
|
r := getEventRequest{
|
|
req: req,
|
|
device: device,
|
|
roomID: roomID,
|
|
eventID: eventID,
|
|
cfg: cfg,
|
|
federation: federation,
|
|
requestedEvent: requestedEvent,
|
|
}
|
|
|
|
stateReq := api.QueryStateAfterEventsRequest{
|
|
RoomID: r.requestedEvent.RoomID(),
|
|
PrevEventIDs: r.requestedEvent.PrevEventIDs(),
|
|
StateToFetch: []gomatrixserverlib.StateKeyTuple{{
|
|
EventType: gomatrixserverlib.MRoomMember,
|
|
StateKey: device.UserID,
|
|
}},
|
|
}
|
|
var stateResp api.QueryStateAfterEventsResponse
|
|
if err := rsAPI.QueryStateAfterEvents(req.Context(), &stateReq, &stateResp); err != nil {
|
|
util.GetLogger(req.Context()).WithError(err).Error("queryAPI.QueryStateAfterEvents failed")
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
|
|
if !stateResp.RoomExists {
|
|
util.GetLogger(req.Context()).Errorf("Expected to find room for event %s but failed", r.requestedEvent.EventID())
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
|
|
if !stateResp.PrevEventsExist {
|
|
// Missing some events locally; stateResp.StateEvents unavailable.
|
|
return util.JSONResponse{
|
|
Code: http.StatusNotFound,
|
|
JSON: jsonerror.NotFound("The event was not found or you do not have permission to read this event"),
|
|
}
|
|
}
|
|
|
|
for _, stateEvent := range stateResp.StateEvents {
|
|
if !stateEvent.StateKeyEquals(device.UserID) {
|
|
continue
|
|
}
|
|
membership, err := stateEvent.Membership()
|
|
if err != nil {
|
|
util.GetLogger(req.Context()).WithError(err).Error("stateEvent.Membership failed")
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
if membership == gomatrixserverlib.Join {
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: gomatrixserverlib.ToClientEvent(r.requestedEvent, gomatrixserverlib.FormatAll),
|
|
}
|
|
}
|
|
}
|
|
|
|
return util.JSONResponse{
|
|
Code: http.StatusNotFound,
|
|
JSON: jsonerror.NotFound("The event was not found or you do not have permission to read this event"),
|
|
}
|
|
}
|