1375 lines
42 KiB
JavaScript
1375 lines
42 KiB
JavaScript
/* global window: false */
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/* global textsecure: false */
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/* global WebAPI: false */
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/* global libsignal: false */
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/* global WebSocketResource: false */
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/* global WebSocket: false */
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/* global Event: false */
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/* global dcodeIO: false */
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/* global _: false */
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/* global ContactBuffer: false */
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/* global GroupBuffer: false */
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/* global Worker: false */
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/* eslint-disable more/no-then */
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const WORKER_TIMEOUT = 60 * 1000; // one minute
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const _utilWorker = new Worker('js/util_worker.js');
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const _jobs = Object.create(null);
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const _DEBUG = false;
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let _jobCounter = 0;
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function _makeJob(fnName) {
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_jobCounter += 1;
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const id = _jobCounter;
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if (_DEBUG) {
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window.log.info(`Worker job ${id} (${fnName}) started`);
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}
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_jobs[id] = {
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fnName,
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start: Date.now(),
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};
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return id;
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}
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function _updateJob(id, data) {
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const { resolve, reject } = data;
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const { fnName, start } = _jobs[id];
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_jobs[id] = {
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..._jobs[id],
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...data,
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resolve: value => {
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_removeJob(id);
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const end = Date.now();
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window.log.info(
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`Worker job ${id} (${fnName}) succeeded in ${end - start}ms`
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);
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return resolve(value);
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},
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reject: error => {
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_removeJob(id);
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const end = Date.now();
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window.log.info(
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`Worker job ${id} (${fnName}) failed in ${end - start}ms`
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);
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return reject(error);
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},
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};
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}
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function _removeJob(id) {
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if (_DEBUG) {
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_jobs[id].complete = true;
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} else {
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delete _jobs[id];
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}
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}
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function _getJob(id) {
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return _jobs[id];
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}
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async function callWorker(fnName, ...args) {
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const jobId = _makeJob(fnName);
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return new Promise((resolve, reject) => {
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_utilWorker.postMessage([jobId, fnName, ...args]);
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_updateJob(jobId, {
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resolve,
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reject,
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args: _DEBUG ? args : null,
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});
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setTimeout(
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() => reject(new Error(`Worker job ${jobId} (${fnName}) timed out`)),
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WORKER_TIMEOUT
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);
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});
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}
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_utilWorker.onmessage = e => {
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const [jobId, errorForDisplay, result] = e.data;
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const job = _getJob(jobId);
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if (!job) {
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throw new Error(
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`Received worker reply to job ${jobId}, but did not have it in our registry!`
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);
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}
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const { resolve, reject, fnName } = job;
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if (errorForDisplay) {
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return reject(
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new Error(
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`Error received from worker job ${jobId} (${fnName}): ${errorForDisplay}`
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)
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);
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}
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return resolve(result);
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};
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function MessageReceiver(username, password, signalingKey, options = {}) {
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this.count = 0;
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this.signalingKey = signalingKey;
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this.username = username;
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this.password = password;
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this.server = WebAPI.connect({ username, password });
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const address = libsignal.SignalProtocolAddress.fromString(username);
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this.number = address.getName();
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this.deviceId = address.getDeviceId();
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this.pending = Promise.resolve();
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if (options.retryCached) {
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this.pending = this.queueAllCached();
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}
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}
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MessageReceiver.stringToArrayBuffer = string =>
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Promise.resolve(dcodeIO.ByteBuffer.wrap(string, 'binary').toArrayBuffer());
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MessageReceiver.arrayBufferToString = arrayBuffer =>
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Promise.resolve(dcodeIO.ByteBuffer.wrap(arrayBuffer).toString('binary'));
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MessageReceiver.stringToArrayBufferBase64 = string =>
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callWorker('stringToArrayBufferBase64', string);
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MessageReceiver.arrayBufferToStringBase64 = arrayBuffer =>
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callWorker('arrayBufferToStringBase64', arrayBuffer);
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MessageReceiver.prototype = new textsecure.EventTarget();
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MessageReceiver.prototype.extend({
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constructor: MessageReceiver,
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connect() {
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if (this.calledClose) {
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return;
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}
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this.count = 0;
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if (this.hasConnected) {
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const ev = new Event('reconnect');
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this.dispatchEvent(ev);
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}
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this.hasConnected = true;
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if (this.socket && this.socket.readyState !== WebSocket.CLOSED) {
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this.socket.close();
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this.wsr.close();
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}
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// initialize the socket and start listening for messages
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this.socket = this.server.getMessageSocket();
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this.socket.onclose = this.onclose.bind(this);
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this.socket.onerror = this.onerror.bind(this);
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this.socket.onopen = this.onopen.bind(this);
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this.wsr = new WebSocketResource(this.socket, {
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handleRequest: this.handleRequest.bind(this),
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keepalive: {
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path: '/v1/keepalive',
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disconnect: true,
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},
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});
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// Because sometimes the socket doesn't properly emit its close event
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this._onClose = this.onclose.bind(this);
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this.wsr.addEventListener('close', this._onClose);
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// Ensures that an immediate 'empty' event from the websocket will fire only after
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// all cached envelopes are processed.
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this.incoming = [this.pending];
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},
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shutdown() {
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if (this.socket) {
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this.socket.onclose = null;
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this.socket.onerror = null;
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this.socket.onopen = null;
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this.socket = null;
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}
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if (this.wsr) {
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this.wsr.removeEventListener('close', this._onClose);
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this.wsr = null;
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}
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},
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close() {
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window.log.info('MessageReceiver.close()');
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this.calledClose = true;
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// Our WebSocketResource instance will close the socket and emit a 'close' event
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// if the socket doesn't emit one quickly enough.
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if (this.wsr) {
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this.wsr.close(3000, 'called close');
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}
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return this.drain();
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},
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onopen() {
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window.log.info('websocket open');
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},
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onerror() {
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window.log.error('websocket error');
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},
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dispatchAndWait(event) {
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return Promise.all(this.dispatchEvent(event));
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},
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onclose(ev) {
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window.log.info(
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'websocket closed',
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ev.code,
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ev.reason || '',
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'calledClose:',
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this.calledClose
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);
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this.shutdown();
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if (this.calledClose) {
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return Promise.resolve();
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}
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if (ev.code === 3000) {
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return Promise.resolve();
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}
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if (ev.code === 3001) {
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this.onEmpty();
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}
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// possible 403 or network issue. Make an request to confirm
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return this.server
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.getDevices(this.number)
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.then(this.connect.bind(this)) // No HTTP error? Reconnect
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.catch(e => {
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const event = new Event('error');
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event.error = e;
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return this.dispatchAndWait(event);
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});
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},
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handleRequest(request) {
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this.incoming = this.incoming || [];
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const lastPromise = _.last(this.incoming);
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// We do the message decryption here, instead of in the ordered pending queue,
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// to avoid exposing the time it took us to process messages through the time-to-ack.
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// TODO: handle different types of requests.
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if (request.path !== '/api/v1/message') {
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window.log.info('got request', request.verb, request.path);
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request.respond(200, 'OK');
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if (request.verb === 'PUT' && request.path === '/api/v1/queue/empty') {
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this.onEmpty();
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}
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return;
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}
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const promise = textsecure.crypto
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.decryptWebsocketMessage(request.body, this.signalingKey)
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.then(plaintext => {
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const envelope = textsecure.protobuf.Envelope.decode(plaintext);
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// After this point, decoding errors are not the server's
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// fault, and we should handle them gracefully and tell the
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// user they received an invalid message
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if (this.isBlocked(envelope.source)) {
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return request.respond(200, 'OK');
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}
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return this.addToCache(envelope, plaintext).then(
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async () => {
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request.respond(200, 'OK');
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// To ensure that we queue in the same order we receive messages
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await lastPromise;
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this.queueEnvelope(envelope);
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},
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error => {
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request.respond(500, 'Failed to cache message');
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window.log.error(
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'handleRequest error trying to add message to cache:',
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error && error.stack ? error.stack : error
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);
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}
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);
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})
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.catch(e => {
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request.respond(500, 'Bad encrypted websocket message');
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window.log.error(
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'Error handling incoming message:',
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e && e.stack ? e.stack : e
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);
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const ev = new Event('error');
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ev.error = e;
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return this.dispatchAndWait(ev);
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});
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this.incoming.push(promise);
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},
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addToQueue(task) {
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this.count += 1;
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this.pending = this.pending.then(task, task);
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const { count, pending } = this;
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const cleanup = () => {
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this.updateProgress(count);
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// We want to clear out the promise chain whenever possible because it could
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// lead to large memory usage over time:
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// https://github.com/nodejs/node/issues/6673#issuecomment-244331609
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if (this.pending === pending) {
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this.pending = Promise.resolve();
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}
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};
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pending.then(cleanup, cleanup);
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return pending;
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},
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onEmpty() {
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const { incoming } = this;
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this.incoming = [];
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const dispatchEmpty = () => {
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window.log.info("MessageReceiver: emitting 'empty' event");
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const ev = new Event('empty');
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return this.dispatchAndWait(ev);
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};
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const queueDispatch = () => {
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// resetting count to zero so everything queued after this starts over again
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this.count = 0;
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this.addToQueue(dispatchEmpty);
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};
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// We first wait for all recently-received messages (this.incoming) to be queued,
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// then we add a task to emit the 'empty' event to the queue, so all message
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// processing is complete by the time it runs.
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Promise.all(incoming).then(queueDispatch, queueDispatch);
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},
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drain() {
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const { incoming } = this;
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this.incoming = [];
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const queueDispatch = () =>
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this.addToQueue(() => {
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window.log.info('drained');
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});
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// This promise will resolve when there are no more messages to be processed.
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return Promise.all(incoming).then(queueDispatch, queueDispatch);
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},
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updateProgress(count) {
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// count by 10s
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if (count % 10 !== 0) {
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return;
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}
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const ev = new Event('progress');
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ev.count = count;
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this.dispatchEvent(ev);
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},
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async queueAllCached() {
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const items = await this.getAllFromCache();
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for (let i = 0, max = items.length; i < max; i += 1) {
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// eslint-disable-next-line no-await-in-loop
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await this.queueCached(items[i]);
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}
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},
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async queueCached(item) {
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try {
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let envelopePlaintext = item.envelope;
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if (item.version === 2) {
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envelopePlaintext = await MessageReceiver.stringToArrayBufferBase64(
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envelopePlaintext
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);
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}
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if (typeof envelopePlaintext === 'string') {
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envelopePlaintext = await MessageReceiver.stringToArrayBuffer(
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envelopePlaintext
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);
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}
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const envelope = textsecure.protobuf.Envelope.decode(envelopePlaintext);
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const { decrypted } = item;
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if (decrypted) {
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let payloadPlaintext = decrypted;
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if (item.version === 2) {
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payloadPlaintext = await MessageReceiver.stringToArrayBufferBase64(
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payloadPlaintext
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);
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}
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if (typeof payloadPlaintext === 'string') {
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payloadPlaintext = await MessageReceiver.stringToArrayBuffer(
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payloadPlaintext
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);
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}
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this.queueDecryptedEnvelope(envelope, payloadPlaintext);
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} else {
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this.queueEnvelope(envelope);
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}
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} catch (error) {
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window.log.error(
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'queueCached error handling item',
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item.id,
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'removing it. Error:',
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error && error.stack ? error.stack : error
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);
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try {
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const { id } = item;
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await textsecure.storage.unprocessed.remove(id);
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} catch (deleteError) {
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window.log.error(
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'queueCached error deleting item',
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item.id,
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'Error:',
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deleteError && deleteError.stack ? deleteError.stack : deleteError
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);
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}
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}
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},
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getEnvelopeId(envelope) {
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return `${envelope.source}.${
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envelope.sourceDevice
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} ${envelope.timestamp.toNumber()}`;
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},
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getAllFromCache() {
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window.log.info('getAllFromCache');
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return textsecure.storage.unprocessed.getAll().then(items => {
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window.log.info(
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'getAllFromCache loaded',
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items.length,
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'saved envelopes'
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);
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|
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return Promise.all(
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_.map(items, item => {
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const attempts = 1 + (item.attempts || 0);
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if (attempts >= 5) {
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window.log.warn(
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'getAllFromCache final attempt for envelope',
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item.id
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);
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return textsecure.storage.unprocessed.remove(item.id);
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}
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return textsecure.storage.unprocessed.save({ ...item, attempts });
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})
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).then(
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() => items,
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error => {
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window.log.error(
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'getAllFromCache error updating items after load:',
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error && error.stack ? error.stack : error
|
|
);
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return items;
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}
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);
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});
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},
|
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async addToCache(envelope, plaintext) {
|
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const id = this.getEnvelopeId(envelope);
|
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const data = {
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id,
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version: 2,
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envelope: await MessageReceiver.arrayBufferToStringBase64(plaintext),
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timestamp: Date.now(),
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attempts: 1,
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};
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return textsecure.storage.unprocessed.add(data);
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},
|
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async updateCache(envelope, plaintext) {
|
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const id = this.getEnvelopeId(envelope);
|
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const item = await textsecure.storage.unprocessed.get(id);
|
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if (!item) {
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window.log.error(
|
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`updateCache: Didn't find item ${id} in cache to update`
|
|
);
|
|
return null;
|
|
}
|
|
|
|
if (item.get('version') === 2) {
|
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item.set(
|
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'decrypted',
|
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await MessageReceiver.arrayBufferToStringBase64(plaintext)
|
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);
|
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} else {
|
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item.set(
|
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'decrypted',
|
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await MessageReceiver.arrayBufferToString(plaintext)
|
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);
|
|
}
|
|
|
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return textsecure.storage.unprocessed.save(item.attributes);
|
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},
|
|
removeFromCache(envelope) {
|
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const id = this.getEnvelopeId(envelope);
|
|
return textsecure.storage.unprocessed.remove(id);
|
|
},
|
|
queueDecryptedEnvelope(envelope, plaintext) {
|
|
const id = this.getEnvelopeId(envelope);
|
|
window.log.info('queueing decrypted envelope', id);
|
|
|
|
const task = this.handleDecryptedEnvelope.bind(this, envelope, plaintext);
|
|
const taskWithTimeout = textsecure.createTaskWithTimeout(
|
|
task,
|
|
`queueEncryptedEnvelope ${id}`
|
|
);
|
|
const promise = this.addToQueue(taskWithTimeout);
|
|
|
|
return promise.catch(error => {
|
|
window.log.error(
|
|
'queueDecryptedEnvelope error handling envelope',
|
|
id,
|
|
':',
|
|
error && error.stack ? error.stack : error
|
|
);
|
|
});
|
|
},
|
|
queueEnvelope(envelope) {
|
|
const id = this.getEnvelopeId(envelope);
|
|
window.log.info('queueing envelope', id);
|
|
|
|
const task = this.handleEnvelope.bind(this, envelope);
|
|
const taskWithTimeout = textsecure.createTaskWithTimeout(
|
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task,
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`queueEnvelope ${id}`
|
|
);
|
|
const promise = this.addToQueue(taskWithTimeout);
|
|
|
|
return promise.catch(error => {
|
|
window.log.error(
|
|
'queueEnvelope error handling envelope',
|
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id,
|
|
':',
|
|
error && error.stack ? error.stack : error
|
|
);
|
|
});
|
|
},
|
|
// Same as handleEnvelope, just without the decryption step. Necessary for handling
|
|
// messages which were successfully decrypted, but application logic didn't finish
|
|
// processing.
|
|
handleDecryptedEnvelope(envelope, plaintext) {
|
|
// No decryption is required for delivery receipts, so the decrypted field of
|
|
// the Unprocessed model will never be set
|
|
|
|
if (envelope.content) {
|
|
return this.innerHandleContentMessage(envelope, plaintext);
|
|
} else if (envelope.legacyMessage) {
|
|
return this.innerHandleLegacyMessage(envelope, plaintext);
|
|
}
|
|
this.removeFromCache(envelope);
|
|
throw new Error('Received message with no content and no legacyMessage');
|
|
},
|
|
handleEnvelope(envelope) {
|
|
if (envelope.type === textsecure.protobuf.Envelope.Type.RECEIPT) {
|
|
return this.onDeliveryReceipt(envelope);
|
|
}
|
|
|
|
if (envelope.content) {
|
|
return this.handleContentMessage(envelope);
|
|
} else if (envelope.legacyMessage) {
|
|
return this.handleLegacyMessage(envelope);
|
|
}
|
|
this.removeFromCache(envelope);
|
|
throw new Error('Received message with no content and no legacyMessage');
|
|
},
|
|
getStatus() {
|
|
if (this.socket) {
|
|
return this.socket.readyState;
|
|
} else if (this.hasConnected) {
|
|
return WebSocket.CLOSED;
|
|
}
|
|
return -1;
|
|
},
|
|
onDeliveryReceipt(envelope) {
|
|
return new Promise((resolve, reject) => {
|
|
const ev = new Event('delivery');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.deliveryReceipt = {
|
|
timestamp: envelope.timestamp.toNumber(),
|
|
source: envelope.source,
|
|
sourceDevice: envelope.sourceDevice,
|
|
};
|
|
this.dispatchAndWait(ev).then(resolve, reject);
|
|
});
|
|
},
|
|
unpad(paddedData) {
|
|
const paddedPlaintext = new Uint8Array(paddedData);
|
|
let plaintext;
|
|
|
|
for (let i = paddedPlaintext.length - 1; i >= 0; i -= 1) {
|
|
if (paddedPlaintext[i] === 0x80) {
|
|
plaintext = new Uint8Array(i);
|
|
plaintext.set(paddedPlaintext.subarray(0, i));
|
|
plaintext = plaintext.buffer;
|
|
break;
|
|
} else if (paddedPlaintext[i] !== 0x00) {
|
|
throw new Error('Invalid padding');
|
|
}
|
|
}
|
|
|
|
return plaintext;
|
|
},
|
|
decrypt(envelope, ciphertext) {
|
|
let promise;
|
|
const address = new libsignal.SignalProtocolAddress(
|
|
envelope.source,
|
|
envelope.sourceDevice
|
|
);
|
|
|
|
const ourNumber = textsecure.storage.user.getNumber();
|
|
const number = address.toString().split('.')[0];
|
|
const options = {};
|
|
|
|
// No limit on message keys if we're communicating with our other devices
|
|
if (ourNumber === number) {
|
|
options.messageKeysLimit = false;
|
|
}
|
|
|
|
const sessionCipher = new libsignal.SessionCipher(
|
|
textsecure.storage.protocol,
|
|
address,
|
|
options
|
|
);
|
|
|
|
switch (envelope.type) {
|
|
case textsecure.protobuf.Envelope.Type.CIPHERTEXT:
|
|
window.log.info('message from', this.getEnvelopeId(envelope));
|
|
promise = sessionCipher
|
|
.decryptWhisperMessage(ciphertext)
|
|
.then(this.unpad);
|
|
break;
|
|
case textsecure.protobuf.Envelope.Type.PREKEY_BUNDLE:
|
|
window.log.info('prekey message from', this.getEnvelopeId(envelope));
|
|
promise = this.decryptPreKeyWhisperMessage(
|
|
ciphertext,
|
|
sessionCipher,
|
|
address
|
|
);
|
|
break;
|
|
default:
|
|
promise = Promise.reject(new Error('Unknown message type'));
|
|
}
|
|
|
|
return promise
|
|
.then(plaintext =>
|
|
this.updateCache(envelope, plaintext).then(
|
|
() => plaintext,
|
|
error => {
|
|
window.log.error(
|
|
'decrypt failed to save decrypted message contents to cache:',
|
|
error && error.stack ? error.stack : error
|
|
);
|
|
return plaintext;
|
|
}
|
|
)
|
|
)
|
|
.catch(error => {
|
|
let errorToThrow = error;
|
|
|
|
if (error && error.message === 'Unknown identity key') {
|
|
// create an error that the UI will pick up and ask the
|
|
// user if they want to re-negotiate
|
|
const buffer = dcodeIO.ByteBuffer.wrap(ciphertext);
|
|
errorToThrow = new textsecure.IncomingIdentityKeyError(
|
|
address.toString(),
|
|
buffer.toArrayBuffer(),
|
|
error.identityKey
|
|
);
|
|
}
|
|
const ev = new Event('error');
|
|
ev.error = errorToThrow;
|
|
ev.proto = envelope;
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
|
|
const returnError = () => Promise.reject(errorToThrow);
|
|
return this.dispatchAndWait(ev).then(returnError, returnError);
|
|
});
|
|
},
|
|
async decryptPreKeyWhisperMessage(ciphertext, sessionCipher, address) {
|
|
const padded = await sessionCipher.decryptPreKeyWhisperMessage(ciphertext);
|
|
|
|
try {
|
|
return this.unpad(padded);
|
|
} catch (e) {
|
|
if (e.message === 'Unknown identity key') {
|
|
// create an error that the UI will pick up and ask the
|
|
// user if they want to re-negotiate
|
|
const buffer = dcodeIO.ByteBuffer.wrap(ciphertext);
|
|
throw new textsecure.IncomingIdentityKeyError(
|
|
address.toString(),
|
|
buffer.toArrayBuffer(),
|
|
e.identityKey
|
|
);
|
|
}
|
|
throw e;
|
|
}
|
|
},
|
|
handleSentMessage(
|
|
envelope,
|
|
destination,
|
|
timestamp,
|
|
msg,
|
|
expirationStartTimestamp
|
|
) {
|
|
let p = Promise.resolve();
|
|
// eslint-disable-next-line no-bitwise
|
|
if (msg.flags & textsecure.protobuf.DataMessage.Flags.END_SESSION) {
|
|
p = this.handleEndSession(destination);
|
|
}
|
|
return p.then(() =>
|
|
this.processDecrypted(envelope, msg, this.number).then(message => {
|
|
const groupId = message.group && message.group.id;
|
|
const isBlocked = this.isGroupBlocked(groupId);
|
|
const isMe = envelope.source === textsecure.storage.user.getNumber();
|
|
const hasGroupMetadata = Boolean(message.group);
|
|
|
|
if (groupId && isBlocked && !(isMe && hasGroupMetadata)) {
|
|
window.log.warn(
|
|
`Message ${this.getEnvelopeId(
|
|
envelope
|
|
)} ignored; destined for blocked group`
|
|
);
|
|
return this.removeFromCache(envelope);
|
|
}
|
|
|
|
const ev = new Event('sent');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.data = {
|
|
destination,
|
|
timestamp: timestamp.toNumber(),
|
|
device: envelope.sourceDevice,
|
|
message,
|
|
};
|
|
if (expirationStartTimestamp) {
|
|
ev.data.expirationStartTimestamp = expirationStartTimestamp.toNumber();
|
|
}
|
|
return this.dispatchAndWait(ev);
|
|
})
|
|
);
|
|
},
|
|
handleDataMessage(envelope, msg) {
|
|
window.log.info('data message from', this.getEnvelopeId(envelope));
|
|
let p = Promise.resolve();
|
|
// eslint-disable-next-line no-bitwise
|
|
if (msg.flags & textsecure.protobuf.DataMessage.Flags.END_SESSION) {
|
|
p = this.handleEndSession(envelope.source);
|
|
}
|
|
return p.then(() =>
|
|
this.processDecrypted(envelope, msg, envelope.source).then(message => {
|
|
const groupId = message.group && message.group.id;
|
|
const isBlocked = this.isGroupBlocked(groupId);
|
|
const isMe = envelope.source === textsecure.storage.user.getNumber();
|
|
const hasGroupMetadata = Boolean(message.group);
|
|
|
|
if (groupId && isBlocked && !(isMe && hasGroupMetadata)) {
|
|
window.log.warn(
|
|
`Message ${this.getEnvelopeId(
|
|
envelope
|
|
)} ignored; destined for blocked group`
|
|
);
|
|
return this.removeFromCache(envelope);
|
|
}
|
|
|
|
const ev = new Event('message');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.data = {
|
|
source: envelope.source,
|
|
sourceDevice: envelope.sourceDevice,
|
|
timestamp: envelope.timestamp.toNumber(),
|
|
receivedAt: envelope.receivedAt,
|
|
message,
|
|
};
|
|
return this.dispatchAndWait(ev);
|
|
})
|
|
);
|
|
},
|
|
handleLegacyMessage(envelope) {
|
|
return this.decrypt(envelope, envelope.legacyMessage).then(plaintext =>
|
|
this.innerHandleLegacyMessage(envelope, plaintext)
|
|
);
|
|
},
|
|
innerHandleLegacyMessage(envelope, plaintext) {
|
|
const message = textsecure.protobuf.DataMessage.decode(plaintext);
|
|
return this.handleDataMessage(envelope, message);
|
|
},
|
|
handleContentMessage(envelope) {
|
|
return this.decrypt(envelope, envelope.content).then(plaintext =>
|
|
this.innerHandleContentMessage(envelope, plaintext)
|
|
);
|
|
},
|
|
innerHandleContentMessage(envelope, plaintext) {
|
|
const content = textsecure.protobuf.Content.decode(plaintext);
|
|
if (content.syncMessage) {
|
|
return this.handleSyncMessage(envelope, content.syncMessage);
|
|
} else if (content.dataMessage) {
|
|
return this.handleDataMessage(envelope, content.dataMessage);
|
|
} else if (content.nullMessage) {
|
|
return this.handleNullMessage(envelope, content.nullMessage);
|
|
} else if (content.callMessage) {
|
|
return this.handleCallMessage(envelope, content.callMessage);
|
|
} else if (content.receiptMessage) {
|
|
return this.handleReceiptMessage(envelope, content.receiptMessage);
|
|
}
|
|
this.removeFromCache(envelope);
|
|
throw new Error('Unsupported content message');
|
|
},
|
|
handleCallMessage(envelope) {
|
|
window.log.info('call message from', this.getEnvelopeId(envelope));
|
|
this.removeFromCache(envelope);
|
|
},
|
|
handleReceiptMessage(envelope, receiptMessage) {
|
|
const results = [];
|
|
if (
|
|
receiptMessage.type === textsecure.protobuf.ReceiptMessage.Type.DELIVERY
|
|
) {
|
|
for (let i = 0; i < receiptMessage.timestamp.length; i += 1) {
|
|
const ev = new Event('delivery');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.deliveryReceipt = {
|
|
timestamp: receiptMessage.timestamp[i].toNumber(),
|
|
source: envelope.source,
|
|
sourceDevice: envelope.sourceDevice,
|
|
};
|
|
results.push(this.dispatchAndWait(ev));
|
|
}
|
|
} else if (
|
|
receiptMessage.type === textsecure.protobuf.ReceiptMessage.Type.READ
|
|
) {
|
|
for (let i = 0; i < receiptMessage.timestamp.length; i += 1) {
|
|
const ev = new Event('read');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.timestamp = envelope.timestamp.toNumber();
|
|
ev.read = {
|
|
timestamp: receiptMessage.timestamp[i].toNumber(),
|
|
reader: envelope.source,
|
|
};
|
|
results.push(this.dispatchAndWait(ev));
|
|
}
|
|
}
|
|
return Promise.all(results);
|
|
},
|
|
handleNullMessage(envelope) {
|
|
window.log.info('null message from', this.getEnvelopeId(envelope));
|
|
this.removeFromCache(envelope);
|
|
},
|
|
handleSyncMessage(envelope, syncMessage) {
|
|
if (envelope.source !== this.number) {
|
|
throw new Error('Received sync message from another number');
|
|
}
|
|
// eslint-disable-next-line eqeqeq
|
|
if (envelope.sourceDevice == this.deviceId) {
|
|
throw new Error('Received sync message from our own device');
|
|
}
|
|
if (syncMessage.sent) {
|
|
const sentMessage = syncMessage.sent;
|
|
const to = sentMessage.message.group
|
|
? `group(${sentMessage.message.group.id.toBinary()})`
|
|
: sentMessage.destination;
|
|
|
|
window.log.info(
|
|
'sent message to',
|
|
to,
|
|
sentMessage.timestamp.toNumber(),
|
|
'from',
|
|
this.getEnvelopeId(envelope)
|
|
);
|
|
return this.handleSentMessage(
|
|
envelope,
|
|
sentMessage.destination,
|
|
sentMessage.timestamp,
|
|
sentMessage.message,
|
|
sentMessage.expirationStartTimestamp
|
|
);
|
|
} else if (syncMessage.contacts) {
|
|
return this.handleContacts(envelope, syncMessage.contacts);
|
|
} else if (syncMessage.groups) {
|
|
return this.handleGroups(envelope, syncMessage.groups);
|
|
} else if (syncMessage.blocked) {
|
|
return this.handleBlocked(envelope, syncMessage.blocked);
|
|
} else if (syncMessage.request) {
|
|
window.log.info('Got SyncMessage Request');
|
|
return this.removeFromCache(envelope);
|
|
} else if (syncMessage.read && syncMessage.read.length) {
|
|
window.log.info('read messages from', this.getEnvelopeId(envelope));
|
|
return this.handleRead(envelope, syncMessage.read);
|
|
} else if (syncMessage.verified) {
|
|
return this.handleVerified(envelope, syncMessage.verified);
|
|
} else if (syncMessage.configuration) {
|
|
return this.handleConfiguration(envelope, syncMessage.configuration);
|
|
}
|
|
throw new Error('Got empty SyncMessage');
|
|
},
|
|
handleConfiguration(envelope, configuration) {
|
|
const ev = new Event('configuration');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.configuration = {
|
|
readReceipts: configuration.readReceipts,
|
|
};
|
|
return this.dispatchAndWait(ev);
|
|
},
|
|
handleVerified(envelope, verified) {
|
|
const ev = new Event('verified');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.verified = {
|
|
state: verified.state,
|
|
destination: verified.destination,
|
|
identityKey: verified.identityKey.toArrayBuffer(),
|
|
};
|
|
return this.dispatchAndWait(ev);
|
|
},
|
|
handleRead(envelope, read) {
|
|
const results = [];
|
|
for (let i = 0; i < read.length; i += 1) {
|
|
const ev = new Event('readSync');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.timestamp = envelope.timestamp.toNumber();
|
|
ev.read = {
|
|
timestamp: read[i].timestamp.toNumber(),
|
|
sender: read[i].sender,
|
|
};
|
|
results.push(this.dispatchAndWait(ev));
|
|
}
|
|
return Promise.all(results);
|
|
},
|
|
handleContacts(envelope, contacts) {
|
|
window.log.info('contact sync');
|
|
const attachmentPointer = contacts.blob;
|
|
return this.handleAttachment(attachmentPointer).then(() => {
|
|
const results = [];
|
|
const contactBuffer = new ContactBuffer(attachmentPointer.data);
|
|
let contactDetails = contactBuffer.next();
|
|
while (contactDetails !== undefined) {
|
|
const ev = new Event('contact');
|
|
ev.contactDetails = contactDetails;
|
|
results.push(this.dispatchAndWait(ev));
|
|
|
|
contactDetails = contactBuffer.next();
|
|
}
|
|
|
|
const ev = new Event('contactsync');
|
|
results.push(this.dispatchAndWait(ev));
|
|
|
|
return Promise.all(results).then(() => {
|
|
window.log.info('handleContacts: finished');
|
|
return this.removeFromCache(envelope);
|
|
});
|
|
});
|
|
},
|
|
handleGroups(envelope, groups) {
|
|
window.log.info('group sync');
|
|
const attachmentPointer = groups.blob;
|
|
return this.handleAttachment(attachmentPointer).then(() => {
|
|
const groupBuffer = new GroupBuffer(attachmentPointer.data);
|
|
let groupDetails = groupBuffer.next();
|
|
const promises = [];
|
|
while (groupDetails !== undefined) {
|
|
const getGroupDetails = details => {
|
|
// eslint-disable-next-line no-param-reassign
|
|
details.id = details.id.toBinary();
|
|
if (details.active) {
|
|
return textsecure.storage.groups
|
|
.getGroup(details.id)
|
|
.then(existingGroup => {
|
|
if (existingGroup === undefined) {
|
|
return textsecure.storage.groups.createNewGroup(
|
|
details.members,
|
|
details.id
|
|
);
|
|
}
|
|
return textsecure.storage.groups.updateNumbers(
|
|
details.id,
|
|
details.members
|
|
);
|
|
})
|
|
.then(() => details);
|
|
}
|
|
return Promise.resolve(details);
|
|
};
|
|
|
|
const promise = getGroupDetails(groupDetails)
|
|
.then(details => {
|
|
const ev = new Event('group');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.groupDetails = details;
|
|
return this.dispatchAndWait(ev);
|
|
})
|
|
.catch(e => {
|
|
window.log.error('error processing group', e);
|
|
});
|
|
groupDetails = groupBuffer.next();
|
|
promises.push(promise);
|
|
}
|
|
|
|
Promise.all(promises).then(() => {
|
|
const ev = new Event('groupsync');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
return this.dispatchAndWait(ev);
|
|
});
|
|
});
|
|
},
|
|
handleBlocked(envelope, blocked) {
|
|
window.log.info('Setting these numbers as blocked:', blocked.numbers);
|
|
textsecure.storage.put('blocked', blocked.numbers);
|
|
|
|
const groupIds = _.map(blocked.groupIds, groupId => groupId.toBinary());
|
|
window.log.info(
|
|
'Setting these groups as blocked:',
|
|
groupIds.map(groupId => `group(${groupId})`)
|
|
);
|
|
textsecure.storage.put('blocked-groups', groupIds);
|
|
|
|
return this.removeFromCache(envelope);
|
|
},
|
|
isBlocked(number) {
|
|
return textsecure.storage.get('blocked', []).indexOf(number) >= 0;
|
|
},
|
|
isGroupBlocked(groupId) {
|
|
return textsecure.storage.get('blocked-groups', []).indexOf(groupId) >= 0;
|
|
},
|
|
handleAttachment(attachment) {
|
|
// eslint-disable-next-line no-param-reassign
|
|
attachment.id = attachment.id.toString();
|
|
// eslint-disable-next-line no-param-reassign
|
|
attachment.key = attachment.key.toArrayBuffer();
|
|
if (attachment.digest) {
|
|
// eslint-disable-next-line no-param-reassign
|
|
attachment.digest = attachment.digest.toArrayBuffer();
|
|
}
|
|
function decryptAttachment(encrypted) {
|
|
return textsecure.crypto.decryptAttachment(
|
|
encrypted,
|
|
attachment.key,
|
|
attachment.digest
|
|
);
|
|
}
|
|
|
|
function updateAttachment(data) {
|
|
// eslint-disable-next-line no-param-reassign
|
|
attachment.data = data;
|
|
}
|
|
|
|
return this.server
|
|
.getAttachment(attachment.id)
|
|
.then(decryptAttachment)
|
|
.then(updateAttachment);
|
|
},
|
|
validateRetryContentMessage(content) {
|
|
// Today this is only called for incoming identity key errors, so it can't be a sync
|
|
// message.
|
|
if (content.syncMessage) {
|
|
return false;
|
|
}
|
|
|
|
// We want at least one field set, but not more than one
|
|
let count = 0;
|
|
count += content.dataMessage ? 1 : 0;
|
|
count += content.callMessage ? 1 : 0;
|
|
count += content.nullMessage ? 1 : 0;
|
|
if (count !== 1) {
|
|
return false;
|
|
}
|
|
|
|
// It's most likely that dataMessage will be populated, so we look at it in detail
|
|
const data = content.dataMessage;
|
|
if (
|
|
data &&
|
|
!data.attachments.length &&
|
|
!data.body &&
|
|
!data.expireTimer &&
|
|
!data.flags &&
|
|
!data.group
|
|
) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
},
|
|
tryMessageAgain(from, ciphertext, message) {
|
|
const address = libsignal.SignalProtocolAddress.fromString(from);
|
|
const sentAt = message.sent_at || Date.now();
|
|
const receivedAt = message.received_at || Date.now();
|
|
|
|
const ourNumber = textsecure.storage.user.getNumber();
|
|
const number = address.getName();
|
|
const device = address.getDeviceId();
|
|
const options = {};
|
|
|
|
// No limit on message keys if we're communicating with our other devices
|
|
if (ourNumber === number) {
|
|
options.messageKeysLimit = false;
|
|
}
|
|
|
|
const sessionCipher = new libsignal.SessionCipher(
|
|
textsecure.storage.protocol,
|
|
address,
|
|
options
|
|
);
|
|
window.log.info('retrying prekey whisper message');
|
|
return this.decryptPreKeyWhisperMessage(
|
|
ciphertext,
|
|
sessionCipher,
|
|
address
|
|
).then(plaintext => {
|
|
const envelope = {
|
|
source: number,
|
|
sourceDevice: device,
|
|
receivedAt,
|
|
timestamp: {
|
|
toNumber() {
|
|
return sentAt;
|
|
},
|
|
},
|
|
};
|
|
|
|
// Before June, all incoming messages were still DataMessage:
|
|
// - iOS: Michael Kirk says that they were sending Legacy messages until June
|
|
// - Desktop: https://github.com/signalapp/Signal-Desktop/commit/e8548879db405d9bcd78b82a456ad8d655592c0f
|
|
// - Android: https://github.com/signalapp/libsignal-service-java/commit/61a75d023fba950ff9b4c75a249d1a3408e12958
|
|
//
|
|
// var d = new Date('2017-06-01T07:00:00.000Z');
|
|
// d.getTime();
|
|
const startOfJune = 1496300400000;
|
|
if (sentAt < startOfJune) {
|
|
return this.innerHandleLegacyMessage(envelope, plaintext);
|
|
}
|
|
|
|
// This is ugly. But we don't know what kind of proto we need to decode...
|
|
try {
|
|
// Simply decoding as a Content message may throw
|
|
const content = textsecure.protobuf.Content.decode(plaintext);
|
|
|
|
// But it might also result in an invalid object, so we try to detect that
|
|
if (this.validateRetryContentMessage(content)) {
|
|
return this.innerHandleContentMessage(envelope, plaintext);
|
|
}
|
|
} catch (e) {
|
|
return this.innerHandleLegacyMessage(envelope, plaintext);
|
|
}
|
|
|
|
return this.innerHandleLegacyMessage(envelope, plaintext);
|
|
});
|
|
},
|
|
async handleEndSession(number) {
|
|
window.log.info('got end session');
|
|
const deviceIds = await textsecure.storage.protocol.getDeviceIds(number);
|
|
|
|
return Promise.all(
|
|
deviceIds.map(deviceId => {
|
|
const address = new libsignal.SignalProtocolAddress(number, deviceId);
|
|
const sessionCipher = new libsignal.SessionCipher(
|
|
textsecure.storage.protocol,
|
|
address
|
|
);
|
|
|
|
window.log.info('deleting sessions for', address.toString());
|
|
return sessionCipher.deleteAllSessionsForDevice();
|
|
})
|
|
);
|
|
},
|
|
processDecrypted(envelope, decrypted, source) {
|
|
/* eslint-disable no-bitwise, no-param-reassign */
|
|
const FLAGS = textsecure.protobuf.DataMessage.Flags;
|
|
|
|
// Now that its decrypted, validate the message and clean it up for consumer
|
|
// processing
|
|
// Note that messages may (generally) only perform one action and we ignore remaining
|
|
// fields after the first action.
|
|
|
|
if (decrypted.flags == null) {
|
|
decrypted.flags = 0;
|
|
}
|
|
if (decrypted.expireTimer == null) {
|
|
decrypted.expireTimer = 0;
|
|
}
|
|
|
|
if (decrypted.flags & FLAGS.END_SESSION) {
|
|
decrypted.body = null;
|
|
decrypted.attachments = [];
|
|
decrypted.group = null;
|
|
return Promise.resolve(decrypted);
|
|
} else if (decrypted.flags & FLAGS.EXPIRATION_TIMER_UPDATE) {
|
|
decrypted.body = null;
|
|
decrypted.attachments = [];
|
|
} else if (decrypted.flags & FLAGS.PROFILE_KEY_UPDATE) {
|
|
decrypted.body = null;
|
|
decrypted.attachments = [];
|
|
} else if (decrypted.flags !== 0) {
|
|
throw new Error('Unknown flags in message');
|
|
}
|
|
|
|
const promises = [];
|
|
|
|
if (decrypted.group !== null) {
|
|
decrypted.group.id = decrypted.group.id.toBinary();
|
|
|
|
if (
|
|
decrypted.group.type === textsecure.protobuf.GroupContext.Type.UPDATE
|
|
) {
|
|
if (decrypted.group.avatar !== null) {
|
|
promises.push(this.handleAttachment(decrypted.group.avatar));
|
|
}
|
|
}
|
|
|
|
const storageGroups = textsecure.storage.groups;
|
|
|
|
promises.push(
|
|
storageGroups.getNumbers(decrypted.group.id).then(existingGroup => {
|
|
if (existingGroup === undefined) {
|
|
if (
|
|
decrypted.group.type !==
|
|
textsecure.protobuf.GroupContext.Type.UPDATE
|
|
) {
|
|
decrypted.group.members = [source];
|
|
window.log.warn('Got message for unknown group');
|
|
}
|
|
return textsecure.storage.groups.createNewGroup(
|
|
decrypted.group.members,
|
|
decrypted.group.id
|
|
);
|
|
}
|
|
const fromIndex = existingGroup.indexOf(source);
|
|
|
|
if (fromIndex < 0) {
|
|
// TODO: This could be indication of a race...
|
|
window.log.warn(
|
|
'Sender was not a member of the group they were sending from'
|
|
);
|
|
}
|
|
|
|
switch (decrypted.group.type) {
|
|
case textsecure.protobuf.GroupContext.Type.UPDATE:
|
|
decrypted.body = null;
|
|
decrypted.attachments = [];
|
|
return textsecure.storage.groups.updateNumbers(
|
|
decrypted.group.id,
|
|
decrypted.group.members
|
|
);
|
|
case textsecure.protobuf.GroupContext.Type.QUIT:
|
|
decrypted.body = null;
|
|
decrypted.attachments = [];
|
|
if (source === this.number) {
|
|
return textsecure.storage.groups.deleteGroup(
|
|
decrypted.group.id
|
|
);
|
|
}
|
|
return textsecure.storage.groups.removeNumber(
|
|
decrypted.group.id,
|
|
source
|
|
);
|
|
case textsecure.protobuf.GroupContext.Type.DELIVER:
|
|
decrypted.group.name = null;
|
|
decrypted.group.members = [];
|
|
decrypted.group.avatar = null;
|
|
return Promise.resolve();
|
|
default:
|
|
this.removeFromCache(envelope);
|
|
throw new Error('Unknown group message type');
|
|
}
|
|
})
|
|
);
|
|
}
|
|
|
|
for (let i = 0, max = decrypted.attachments.length; i < max; i += 1) {
|
|
const attachment = decrypted.attachments[i];
|
|
promises.push(this.handleAttachment(attachment));
|
|
}
|
|
|
|
if (decrypted.contact && decrypted.contact.length) {
|
|
const contacts = decrypted.contact;
|
|
|
|
for (let i = 0, max = contacts.length; i < max; i += 1) {
|
|
const contact = contacts[i];
|
|
const { avatar } = contact;
|
|
|
|
if (avatar && avatar.avatar) {
|
|
// We don't want the failure of a thumbnail download to fail the handling of
|
|
// this message entirely, like we do for full attachments.
|
|
promises.push(
|
|
this.handleAttachment(avatar.avatar).catch(error => {
|
|
window.log.error(
|
|
'Problem loading avatar for contact',
|
|
error && error.stack ? error.stack : error
|
|
);
|
|
})
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (decrypted.quote && decrypted.quote.id) {
|
|
decrypted.quote.id = decrypted.quote.id.toNumber();
|
|
}
|
|
|
|
if (decrypted.quote && decrypted.quote.attachments) {
|
|
const { attachments } = decrypted.quote;
|
|
|
|
for (let i = 0, max = attachments.length; i < max; i += 1) {
|
|
const attachment = attachments[i];
|
|
const { thumbnail } = attachment;
|
|
|
|
if (thumbnail) {
|
|
// We don't want the failure of a thumbnail download to fail the handling of
|
|
// this message entirely, like we do for full attachments.
|
|
promises.push(
|
|
this.handleAttachment(thumbnail).catch(error => {
|
|
window.log.error(
|
|
'Problem loading thumbnail for quote',
|
|
error && error.stack ? error.stack : error
|
|
);
|
|
})
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
return Promise.all(promises).then(() => decrypted);
|
|
/* eslint-enable no-bitwise, no-param-reassign */
|
|
},
|
|
});
|
|
|
|
window.textsecure = window.textsecure || {};
|
|
|
|
textsecure.MessageReceiver = function MessageReceiverWrapper(
|
|
username,
|
|
password,
|
|
signalingKey,
|
|
options
|
|
) {
|
|
const messageReceiver = new MessageReceiver(
|
|
username,
|
|
password,
|
|
signalingKey,
|
|
options
|
|
);
|
|
this.addEventListener = messageReceiver.addEventListener.bind(
|
|
messageReceiver
|
|
);
|
|
this.removeEventListener = messageReceiver.removeEventListener.bind(
|
|
messageReceiver
|
|
);
|
|
this.getStatus = messageReceiver.getStatus.bind(messageReceiver);
|
|
this.close = messageReceiver.close.bind(messageReceiver);
|
|
messageReceiver.connect();
|
|
};
|
|
|
|
textsecure.MessageReceiver.prototype = {
|
|
constructor: textsecure.MessageReceiver,
|
|
};
|
|
|
|
textsecure.MessageReceiver.stringToArrayBuffer =
|
|
MessageReceiver.stringToArrayBuffer;
|
|
textsecure.MessageReceiver.arrayBufferToString =
|
|
MessageReceiver.arrayBufferToString;
|
|
textsecure.MessageReceiver.stringToArrayBufferBase64 =
|
|
MessageReceiver.stringToArrayBufferBase64;
|
|
textsecure.MessageReceiver.arrayBufferToStringBase64 =
|
|
MessageReceiver.arrayBufferToStringBase64;
|