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// Copyright 2017 Vector Creations Ltd
//
// 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"
"math"
"net/http"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/syncapi/storage"
"github.com/matrix-org/dendrite/syncapi/synctypes"
"github.com/matrix-org/dendrite/syncapi/types"
userapi "github.com/matrix-org/dendrite/userapi/api"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/gomatrixserverlib/spec"
"github.com/matrix-org/util"
)
type getMembershipResponse struct {
Chunk []synctypes.ClientEvent `json:"chunk"`
}
// https://matrix.org/docs/spec/client_server/r0.6.0#get-matrix-client-r0-rooms-roomid-joined-members
type getJoinedMembersResponse struct {
Joined map[string]joinedMember `json:"joined"`
}
type joinedMember struct {
DisplayName string `json:"display_name"`
AvatarURL string `json:"avatar_url"`
}
// The database stores 'displayname' without an underscore.
// Deserialize into this and then change to the actual API response
type databaseJoinedMember struct {
DisplayName string `json:"displayname"`
AvatarURL string `json:"avatar_url"`
}
// GetMemberships implements
//
// GET /rooms/{roomId}/members
// GET /rooms/{roomId}/joined_members
func GetMemberships(
req *http.Request, device *userapi.Device, roomID string,
syncDB storage.Database, rsAPI api.SyncRoomserverAPI,
joinedOnly bool, membership, notMembership *string, at string,
) util.JSONResponse {
queryReq := api.QueryMembershipForUserRequest{
RoomID: roomID,
UserID: device.UserID,
}
var queryRes api.QueryMembershipForUserResponse
if err := rsAPI.QueryMembershipForUser(req.Context(), &queryReq, &queryRes); err != nil {
util.GetLogger(req.Context()).WithError(err).Error("rsAPI.QueryMembershipsForRoom failed")
return spec.InternalServerError()
}
if !queryRes.HasBeenInRoom {
return util.JSONResponse{
Code: http.StatusForbidden,
JSON: spec.Forbidden("You aren't a member of the room and weren't previously a member of the room."),
}
}
if joinedOnly && !queryRes.IsInRoom {
return util.JSONResponse{
Code: http.StatusForbidden,
JSON: spec.Forbidden("You aren't a member of the room and weren't previously a member of the room."),
}
}
db, err := syncDB.NewDatabaseSnapshot(req.Context())
if err != nil {
return spec.InternalServerError()
}
defer db.Rollback() // nolint: errcheck
atToken, err := types.NewTopologyTokenFromString(at)
if err != nil {
atToken = types.TopologyToken{Depth: math.MaxInt64, PDUPosition: math.MaxInt64}
if queryRes.HasBeenInRoom && !queryRes.IsInRoom {
// If you have left the room then this will be the members of the room when you left.
atToken, err = db.EventPositionInTopology(req.Context(), queryRes.EventID)
if err != nil {
util.GetLogger(req.Context()).WithError(err).Error("unable to get 'atToken'")
return spec.InternalServerError()
}
}
}
eventIDs, err := db.SelectMemberships(req.Context(), roomID, atToken, membership, notMembership)
if err != nil {
util.GetLogger(req.Context()).WithError(err).Error("db.SelectMemberships failed")
return spec.InternalServerError()
}
qryRes := &api.QueryEventsByIDResponse{}
if err := rsAPI.QueryEventsByID(req.Context(), &api.QueryEventsByIDRequest{EventIDs: eventIDs, RoomID: roomID}, qryRes); err != nil {
util.GetLogger(req.Context()).WithError(err).Error("rsAPI.QueryEventsByID failed")
return spec.InternalServerError()
}
result := qryRes.Events
if joinedOnly {
var res getJoinedMembersResponse
res.Joined = make(map[string]joinedMember)
for _, ev := range result {
var content databaseJoinedMember
if err := json.Unmarshal(ev.Content(), &content); err != nil {
util.GetLogger(req.Context()).WithError(err).Error("failed to unmarshal event content")
return spec.InternalServerError()
}
res.Joined[ev.Sender()] = joinedMember(content)
}
return util.JSONResponse{
Code: http.StatusOK,
JSON: res,
}
}
return util.JSONResponse{
Code: http.StatusOK,
JSON: getMembershipResponse{synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(result), synctypes.FormatAll)},
}
}
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