136 lines
4.6 KiB
JavaScript
136 lines
4.6 KiB
JavaScript
/*
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Copyright 2015, 2016 OpenMarket Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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"use strict";
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import Promise from 'bluebird';
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var Matrix = require("matrix-js-sdk");
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var Room = Matrix.Room;
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var CallHandler = require('matrix-react-sdk/lib/CallHandler');
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// FIXME: This currently forces Vector to try to hit the matrix.org AS for conferencing.
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// This is bad because it prevents people running their own ASes from being used.
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// This isn't permanent and will be customisable in the future: see the proposal
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// at docs/conferencing.md for more info.
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var USER_PREFIX = "fs_";
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var DOMAIN = "matrix.org";
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function ConferenceCall(matrixClient, groupChatRoomId) {
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this.client = matrixClient;
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this.groupRoomId = groupChatRoomId;
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this.confUserId = module.exports.getConferenceUserIdForRoom(this.groupRoomId);
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}
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ConferenceCall.prototype.setup = function() {
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var self = this;
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return this._joinConferenceUser().then(function() {
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return self._getConferenceUserRoom();
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}).then(function(room) {
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// return a call for *this* room to be placed. We also tack on
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// confUserId to speed up lookups (else we'd need to loop every room
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// looking for a 1:1 room with this conf user ID!)
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var call = Matrix.createNewMatrixCall(self.client, room.roomId);
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call.confUserId = self.confUserId;
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call.groupRoomId = self.groupRoomId;
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return call;
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});
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};
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ConferenceCall.prototype._joinConferenceUser = function() {
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// Make sure the conference user is in the group chat room
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var groupRoom = this.client.getRoom(this.groupRoomId);
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if (!groupRoom) {
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return Promise.reject("Bad group room ID");
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}
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var member = groupRoom.getMember(this.confUserId);
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if (member && member.membership === "join") {
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return Promise.resolve();
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}
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return this.client.invite(this.groupRoomId, this.confUserId);
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};
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ConferenceCall.prototype._getConferenceUserRoom = function() {
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// Use an existing 1:1 with the conference user; else make one
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var rooms = this.client.getRooms();
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var confRoom = null;
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for (var i = 0; i < rooms.length; i++) {
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var confUser = rooms[i].getMember(this.confUserId);
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if (confUser && confUser.membership === "join" &&
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rooms[i].getJoinedMembers().length === 2) {
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confRoom = rooms[i];
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break;
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}
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}
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if (confRoom) {
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return Promise.resolve(confRoom);
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}
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return this.client.createRoom({
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preset: "private_chat",
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invite: [this.confUserId]
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}).then(function(res) {
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return new Room(res.room_id);
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});
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};
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/**
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* Check if this user ID is in fact a conference bot.
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* @param {string} userId The user ID to check.
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* @return {boolean} True if it is a conference bot.
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*/
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module.exports.isConferenceUser = function(userId) {
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if (userId.indexOf("@" + USER_PREFIX) !== 0) {
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return false;
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}
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var base64part = userId.split(":")[0].substring(1 + USER_PREFIX.length);
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if (base64part) {
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var decoded = new Buffer(base64part, "base64").toString();
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// ! $STUFF : $STUFF
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return /^!.+:.+/.test(decoded);
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}
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return false;
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};
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module.exports.getConferenceUserIdForRoom = function(roomId) {
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// abuse browserify's core node Buffer support (strip padding ='s)
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var base64RoomId = new Buffer(roomId).toString("base64").replace(/=/g, "");
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return "@" + USER_PREFIX + base64RoomId + ":" + DOMAIN;
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};
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module.exports.createNewMatrixCall = function(client, roomId) {
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var confCall = new ConferenceCall(
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client, roomId
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);
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return confCall.setup();
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};
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module.exports.getConferenceCallForRoom = function(roomId) {
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// search for a conference 1:1 call for this group chat room ID
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var activeCall = CallHandler.getAnyActiveCall();
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if (activeCall && activeCall.confUserId) {
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var thisRoomConfUserId = module.exports.getConferenceUserIdForRoom(
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roomId
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);
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if (thisRoomConfUserId === activeCall.confUserId) {
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return activeCall;
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}
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}
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return null;
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};
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module.exports.ConferenceCall = ConferenceCall;
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module.exports.slot = 'conference';
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