mirror of
https://github.com/element-hq/synapse
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145 lines
6.7 KiB
JavaScript
145 lines
6.7 KiB
JavaScript
/*
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Copyright 2014 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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angular.module('matrixPhoneService', [])
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.factory('matrixPhoneService', ['$rootScope', '$injector', 'matrixService', 'eventHandlerService', function MatrixPhoneService($rootScope, $injector, matrixService, eventHandlerService) {
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var matrixPhoneService = function() {
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};
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matrixPhoneService.INCOMING_CALL_EVENT = "INCOMING_CALL_EVENT";
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matrixPhoneService.REPLACED_CALL_EVENT = "REPLACED_CALL_EVENT";
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matrixPhoneService.allCalls = {};
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// a place to save candidates that come in for calls we haven't got invites for yet (when paginating backwards)
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matrixPhoneService.candidatesByCall = {};
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matrixPhoneService.callPlaced = function(call) {
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matrixPhoneService.allCalls[call.call_id] = call;
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};
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$rootScope.$on(eventHandlerService.CALL_EVENT, function(ngEvent, event, isLive) {
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if (event.user_id == matrixService.config().user_id) return;
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var msg = event.content;
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if (event.type == 'm.call.invite') {
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if (event.age == undefined || msg.lifetime == undefined) {
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// if the event doesn't have either an age (the HS is too old) or a lifetime
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// (the sending client was too old when it sent it) then fall back to old behaviour
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if (!isLive) return; // until matrix supports expiring messages
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}
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if (event.age > msg.lifetime) {
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console.log("Ignoring expired call event of type "+event.type);
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return;
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}
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var call = undefined;
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if (!isLive) {
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// if this event wasn't live then this call may already be over
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call = matrixPhoneService.allCalls[msg.call_id];
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if (call && call.state == 'ended') {
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return;
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}
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}
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var MatrixCall = $injector.get('MatrixCall');
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var call = new MatrixCall(event.room_id);
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call.call_id = msg.call_id;
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call.initWithInvite(event);
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matrixPhoneService.allCalls[call.call_id] = call;
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// if we stashed candidate events for that call ID, play them back now
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if (!isLive && matrixPhoneService.candidatesByCall[call.call_id] != undefined) {
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for (var i = 0; i < matrixPhoneService.candidatesByCall[call.call_id].length; ++i) {
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call.gotRemoteIceCandidate(matrixPhoneService.candidatesByCall[call.call_id][i]);
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}
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}
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// Were we trying to call that user (room)?
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var existingCall;
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var callIds = Object.keys(matrixPhoneService.allCalls);
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for (var i = 0; i < callIds.length; ++i) {
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var thisCallId = callIds[i];
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var thisCall = matrixPhoneService.allCalls[thisCallId];
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if (call.room_id == thisCall.room_id && thisCall.direction == 'outbound'
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&& (thisCall.state == 'wait_local_media' || thisCall.state == 'create_offer' || thisCall.state == 'invite_sent')) {
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existingCall = thisCall;
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break;
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}
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}
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if (existingCall) {
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// If we've only got to wait_local_media or create_offer and we've got an invite,
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// pick the incoming call because we know we haven't sent our invite yet
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// otherwise, pick whichever call has the lowest call ID (by string comparison)
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if (existingCall.state == 'wait_local_media' || existingCall.state == 'create_offer' || existingCall.call_id > call.call_id) {
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console.log("Glare detected: answering incoming call "+call.call_id+" and canceling outgoing call "+existingCall.call_id);
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existingCall.replacedBy(call);
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call.answer();
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$rootScope.$broadcast(matrixPhoneService.REPLACED_CALL_EVENT, existingCall, call);
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} else {
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console.log("Glare detected: rejecting incoming call "+call.call_id+" and keeping outgoing call "+existingCall.call_id);
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call.hangup();
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}
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} else {
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$rootScope.$broadcast(matrixPhoneService.INCOMING_CALL_EVENT, call);
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}
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} else if (event.type == 'm.call.answer') {
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var call = matrixPhoneService.allCalls[msg.call_id];
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if (!call) {
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console.log("Got answer for unknown call ID "+msg.call_id);
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return;
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}
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call.receivedAnswer(msg);
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} else if (event.type == 'm.call.candidates') {
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var call = matrixPhoneService.allCalls[msg.call_id];
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if (!call && isLive) {
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console.log("Got candidates for unknown call ID "+msg.call_id);
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return;
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} else if (!call) {
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if (matrixPhoneService.candidatesByCall[msg.call_id] == undefined) {
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matrixPhoneService.candidatesByCall[msg.call_id] = [];
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}
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matrixPhoneService.candidatesByCall[msg.call_id] = matrixPhoneService.candidatesByCall[msg.call_id].concat(msg.candidates);
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} else {
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for (var i = 0; i < msg.candidates.length; ++i) {
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call.gotRemoteIceCandidate(msg.candidates[i]);
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}
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}
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} else if (event.type == 'm.call.hangup') {
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var call = matrixPhoneService.allCalls[msg.call_id];
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if (!call && isLive) {
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console.log("Got hangup for unknown call ID "+msg.call_id);
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} else if (!call) {
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// if not live, store the fact that the call has ended because we're probably getting events backwards so
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// the hangup will come before the invite
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var MatrixCall = $injector.get('MatrixCall');
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var call = new MatrixCall(event.room_id);
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call.call_id = msg.call_id;
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call.initWithHangup(event);
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matrixPhoneService.allCalls[msg.call_id] = call;
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} else {
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call.onHangupReceived();
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delete(matrixPhoneService.allCalls[msg.call_id]);
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}
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}
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});
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return matrixPhoneService;
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}]);
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