mirror of
https://github.com/oxen-io/session-desktop.git
synced 2023-12-14 02:12:57 +01:00
966 lines
39 KiB
JavaScript
966 lines
39 KiB
JavaScript
/*
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* vim: ts=4:sw=4:expandtab
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*/
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function MessageReceiver(url, username, password, signalingKey, options) {
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options = options || {};
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this.count = 0;
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this.url = url;
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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 = new TextSecureServer(url, username, password);
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var 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.prototype = new textsecure.EventTarget();
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MessageReceiver.prototype.extend({
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constructor: MessageReceiver,
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connect: function() {
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if (this.calledClose) {
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return;
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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: function() {
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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: function() {
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console.log('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: function() {
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console.log('websocket open');
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},
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onerror: function(error) {
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console.log('websocket error');
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},
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dispatchAndWait: function(event) {
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return Promise.all(this.dispatchEvent(event));
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},
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onclose: function(ev) {
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console.log(
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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;
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}
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if (ev.code === 3000) {
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return;
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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.getDevices(this.number)
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.then(this.connect.bind(this)) // No HTTP error? Reconnect
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.catch(function(e) {
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var ev = new Event('error');
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ev.error = e;
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return this.dispatchAndWait(ev);
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}.bind(this));
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},
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handleRequest: function(request) {
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this.incoming = 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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console.log('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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this.incoming.push(textsecure.crypto.decryptWebsocketMessage(request.body, this.signalingKey).then(function(plaintext) {
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var 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(function() {
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request.respond(200, 'OK');
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this.queueEnvelope(envelope);
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}.bind(this), function(error) {
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console.log(
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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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}.bind(this)).catch(function(e) {
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request.respond(500, 'Bad encrypted websocket message');
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console.log("Error handling incoming message:", e && e.stack ? e.stack : e);
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var ev = new Event('error');
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ev.error = e;
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return this.dispatchAndWait(ev);
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}.bind(this)));
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},
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addToQueue: function(task) {
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var count = this.count += 1;
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var current = this.pending = this.pending.then(task, task);
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var cleanup = function() {
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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 === current) {
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this.pending = Promise.resolve();
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}
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}.bind(this);
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current.then(cleanup, cleanup);
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return current;
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},
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onEmpty: function() {
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var incoming = this.incoming;
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this.incoming = [];
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var dispatchEmpty = function() {
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console.log('MessageReceiver: emitting \'empty\' event');
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var ev = new Event('empty');
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return this.dispatchAndWait(ev);
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}.bind(this);
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var queueDispatch = function() {
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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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}.bind(this);
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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: function() {
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var incoming = this.incoming;
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this.incoming = [];
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var queueDispatch = function() {
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return this.addToQueue(function() {
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console.log('drained');
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});
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}.bind(this);
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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: function(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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var 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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queueAllCached: function() {
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return this.getAllFromCache().then(function(items) {
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for (var i = 0, max = items.length; i < max; i += 1) {
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this.queueCached(items[i]);
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}
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}.bind(this));
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},
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queueCached: function(item) {
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try {
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var envelopePlaintext = item.envelope;
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// Up until 0.42.6 we stored envelope and decrypted as strings in IndexedDB,
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// so we need to be ready for them.
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if (typeof envelopePlaintext === 'string') {
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envelopePlaintext = this.stringToArrayBuffer(envelopePlaintext);
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}
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var envelope = textsecure.protobuf.Envelope.decode(envelopePlaintext);
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var decrypted = item.decrypted;
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if (decrypted) {
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var payloadPlaintext = decrypted;
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if (typeof payloadPlaintext === 'string') {
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payloadPlaintext = this.stringToArrayBuffer(payloadPlaintext);
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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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}
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catch (error) {
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console.log('queueCached error handling item', item.id);
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}
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},
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getEnvelopeId: function(envelope) {
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return envelope.source + '.' + envelope.sourceDevice + ' ' + envelope.timestamp.toNumber();
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},
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stringToArrayBuffer: function(string) {
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return new dcodeIO.ByteBuffer.wrap(string, 'binary').toArrayBuffer();
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},
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getAllFromCache: function() {
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console.log('getAllFromCache');
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return textsecure.storage.unprocessed.getAll().then(function(items) {
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console.log('getAllFromCache loaded', items.length, 'saved envelopes');
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return Promise.all(_.map(items, function(item) {
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var attempts = 1 + (item.attempts || 0);
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if (attempts >= 5) {
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console.log('getAllFromCache final attempt for envelope', item.id);
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return textsecure.storage.unprocessed.remove(item.id);
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} else {
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return textsecure.storage.unprocessed.update(item.id, {attempts: attempts});
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}
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}.bind(this))).then(function() {
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return items;
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}, function(error) {
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console.log(
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'getAllFromCache error updating items after load:',
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error && error.stack ? error.stack : error
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);
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return items;
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});
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}.bind(this));
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},
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addToCache: function(envelope, plaintext) {
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var id = this.getEnvelopeId(envelope);
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var data = {
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id: id,
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envelope: 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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updateCache: function(envelope, plaintext) {
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var id = this.getEnvelopeId(envelope);
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var data = {
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decrypted: plaintext
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};
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return textsecure.storage.unprocessed.update(id, data);
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},
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removeFromCache: function(envelope) {
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var id = this.getEnvelopeId(envelope);
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return textsecure.storage.unprocessed.remove(id);
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},
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queueDecryptedEnvelope: function(envelope, plaintext) {
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var id = this.getEnvelopeId(envelope);
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console.log('queueing decrypted envelope', id);
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var task = this.handleDecryptedEnvelope.bind(this, envelope, plaintext);
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var taskWithTimeout = textsecure.createTaskWithTimeout(task, 'queueEncryptedEnvelope ' + id);
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var promise = this.addToQueue(taskWithTimeout);
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return promise.catch(function(error) {
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console.log('queueDecryptedEnvelope error handling envelope', id, ':', error && error.stack ? error.stack : error);
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});
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},
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queueEnvelope: function(envelope) {
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var id = this.getEnvelopeId(envelope);
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console.log('queueing envelope', id);
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var task = this.handleEnvelope.bind(this, envelope);
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var taskWithTimeout = textsecure.createTaskWithTimeout(task, 'queueEnvelope ' + id);
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var promise = this.addToQueue(taskWithTimeout);
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return promise.catch(function(error) {
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console.log('queueEnvelope error handling envelope', id, ':', error && error.stack ? error.stack : error);
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});
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},
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// Same as handleEnvelope, just without the decryption step. Necessary for handling
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// messages which were successfully decrypted, but application logic didn't finish
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// processing.
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handleDecryptedEnvelope: function(envelope, plaintext) {
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// No decryption is required for delivery receipts, so the decrypted field of
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// the Unprocessed model will never be set
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if (envelope.content) {
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return this.innerHandleContentMessage(envelope, plaintext);
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} else if (envelope.legacyMessage) {
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return this.innerHandleLegacyMessage(envelope, plaintext);
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} else {
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this.removeFromCache(envelope);
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throw new Error('Received message with no content and no legacyMessage');
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}
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},
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handleEnvelope: function(envelope) {
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if (envelope.type === textsecure.protobuf.Envelope.Type.RECEIPT) {
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return this.onDeliveryReceipt(envelope);
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}
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if (envelope.content) {
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return this.handleContentMessage(envelope);
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} else if (envelope.legacyMessage) {
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return this.handleLegacyMessage(envelope);
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} else {
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this.removeFromCache(envelope);
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throw new Error('Received message with no content and no legacyMessage');
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}
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},
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getStatus: function() {
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if (this.socket) {
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return this.socket.readyState;
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} else if (this.hasConnected) {
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return WebSocket.CLOSED;
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} else {
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return -1;
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}
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},
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onDeliveryReceipt: function (envelope) {
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return new Promise(function(resolve, reject) {
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var ev = new Event('delivery');
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ev.confirm = this.removeFromCache.bind(this, envelope);
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ev.deliveryReceipt = {
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timestamp : envelope.timestamp.toNumber(),
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source : envelope.source,
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sourceDevice : envelope.sourceDevice
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};
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this.dispatchAndWait(ev).then(resolve, reject);
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}.bind(this));
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},
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unpad: function(paddedPlaintext) {
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paddedPlaintext = new Uint8Array(paddedPlaintext);
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var plaintext;
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for (var i = paddedPlaintext.length - 1; i >= 0; i--) {
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if (paddedPlaintext[i] == 0x80) {
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plaintext = new Uint8Array(i);
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plaintext.set(paddedPlaintext.subarray(0, i));
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plaintext = plaintext.buffer;
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break;
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} else if (paddedPlaintext[i] !== 0x00) {
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throw new Error('Invalid padding');
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}
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}
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return plaintext;
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},
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decrypt: function(envelope, ciphertext) {
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var promise;
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var address = new libsignal.SignalProtocolAddress(envelope.source, envelope.sourceDevice);
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var ourNumber = textsecure.storage.user.getNumber();
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var number = address.toString().split('.')[0];
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var options = {};
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// No limit on message keys if we're communicating with our other devices
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if (ourNumber === number) {
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options.messageKeysLimit = false;
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}
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var sessionCipher = new libsignal.SessionCipher(textsecure.storage.protocol, address, options);
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switch(envelope.type) {
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case textsecure.protobuf.Envelope.Type.CIPHERTEXT:
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console.log('message from', this.getEnvelopeId(envelope));
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promise = sessionCipher.decryptWhisperMessage(ciphertext).then(this.unpad);
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break;
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case textsecure.protobuf.Envelope.Type.PREKEY_BUNDLE:
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console.log('prekey message from', this.getEnvelopeId(envelope));
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promise = this.decryptPreKeyWhisperMessage(ciphertext, sessionCipher, address);
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break;
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default:
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promise = Promise.reject(new Error("Unknown message type"));
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}
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return promise.then(function(plaintext) {
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return this.updateCache(envelope, plaintext).then(function() {
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return plaintext;
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}, function(error) {
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console.log(
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'decrypt failed to save decrypted message contents to cache:',
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error && error.stack ? error.stack : error
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);
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return plaintext;
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});
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}.bind(this)).catch(function(error) {
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if (error.message === 'Unknown identity key') {
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// create an error that the UI will pick up and ask the
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// user if they want to re-negotiate
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var buffer = dcodeIO.ByteBuffer.wrap(ciphertext);
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error = new textsecure.IncomingIdentityKeyError(
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address.toString(),
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buffer.toArrayBuffer(),
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error.identityKey
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);
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}
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var ev = new Event('error');
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ev.error = error;
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ev.proto = envelope;
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ev.confirm = this.removeFromCache.bind(this, envelope);
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var returnError = function() {
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return Promise.reject(error);
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};
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return this.dispatchAndWait(ev).then(returnError, returnError);
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}.bind(this));
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},
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decryptPreKeyWhisperMessage: function(ciphertext, sessionCipher, address) {
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return sessionCipher.decryptPreKeyWhisperMessage(ciphertext).then(this.unpad).catch(function(e) {
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if (e.message === 'Unknown identity key') {
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// create an error that the UI will pick up and ask the
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// user if they want to re-negotiate
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var buffer = dcodeIO.ByteBuffer.wrap(ciphertext);
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throw new textsecure.IncomingIdentityKeyError(
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address.toString(),
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buffer.toArrayBuffer(),
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e.identityKey
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);
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}
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throw e;
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});
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},
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handleSentMessage: function(envelope, destination, timestamp, message, expirationStartTimestamp) {
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var p = Promise.resolve();
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if ((message.flags & textsecure.protobuf.DataMessage.Flags.END_SESSION) ==
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textsecure.protobuf.DataMessage.Flags.END_SESSION ) {
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p = this.handleEndSession(destination);
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}
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return p.then(function() {
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return this.processDecrypted(envelope, message, this.number).then(function(message) {
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var ev = new Event('sent');
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ev.confirm = this.removeFromCache.bind(this, envelope);
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ev.data = {
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destination : destination,
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timestamp : timestamp.toNumber(),
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device : envelope.sourceDevice,
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message : message
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};
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if (expirationStartTimestamp) {
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ev.data.expirationStartTimestamp = expirationStartTimestamp.toNumber();
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}
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return this.dispatchAndWait(ev);
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}.bind(this));
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}.bind(this));
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},
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handleDataMessage: function(envelope, message) {
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console.log('data message from', this.getEnvelopeId(envelope));
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var p = Promise.resolve();
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if ((message.flags & textsecure.protobuf.DataMessage.Flags.END_SESSION) ==
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textsecure.protobuf.DataMessage.Flags.END_SESSION ) {
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p = this.handleEndSession(envelope.source);
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}
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return p.then(function() {
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return this.processDecrypted(envelope, message, envelope.source).then(function(message) {
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var ev = new Event('message');
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|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.data = {
|
|
source : envelope.source,
|
|
sourceDevice : envelope.sourceDevice,
|
|
timestamp : envelope.timestamp.toNumber(),
|
|
receivedAt : envelope.receivedAt,
|
|
message : message
|
|
};
|
|
return this.dispatchAndWait(ev);
|
|
}.bind(this));
|
|
}.bind(this));
|
|
},
|
|
handleLegacyMessage: function (envelope) {
|
|
return this.decrypt(envelope, envelope.legacyMessage).then(function(plaintext) {
|
|
return this.innerHandleLegacyMessage(envelope, plaintext);
|
|
}.bind(this));
|
|
},
|
|
innerHandleLegacyMessage: function (envelope, plaintext) {
|
|
var message = textsecure.protobuf.DataMessage.decode(plaintext);
|
|
return this.handleDataMessage(envelope, message);
|
|
},
|
|
handleContentMessage: function (envelope) {
|
|
return this.decrypt(envelope, envelope.content).then(function(plaintext) {
|
|
return this.innerHandleContentMessage(envelope, plaintext);
|
|
}.bind(this));
|
|
},
|
|
innerHandleContentMessage: function(envelope, plaintext) {
|
|
var 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);
|
|
} else {
|
|
this.removeFromCache(envelope);
|
|
throw new Error('Unsupported content message');
|
|
}
|
|
},
|
|
handleCallMessage: function(envelope, nullMessage) {
|
|
console.log('call message from', this.getEnvelopeId(envelope));
|
|
this.removeFromCache(envelope);
|
|
},
|
|
handleReceiptMessage: function(envelope, receiptMessage) {
|
|
var results = [];
|
|
if (receiptMessage.type === textsecure.protobuf.ReceiptMessage.Type.DELIVERY) {
|
|
for (var i = 0; i < receiptMessage.timestamps.length; ++i) {
|
|
var ev = new Event('delivery');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.deliveryReceipt = {
|
|
timestamp : receiptMessage.timestamps[i].toNumber(),
|
|
source : envelope.source,
|
|
sourceDevice : envelope.sourceDevice
|
|
};
|
|
results.push(this.dispatchAndWait(ev));
|
|
}
|
|
} else if (receiptMessage.type === textsecure.protobuf.ReceiptMessage.Type.READ) {
|
|
for (var i = 0; i < receiptMessage.timestamps.length; ++i) {
|
|
var ev = new Event('read');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.timestamp = envelope.timestamp.toNumber();
|
|
ev.read = {
|
|
timestamp : receiptMessage.timestamps[i].toNumber(),
|
|
reader : envelope.source
|
|
}
|
|
results.push(this.dispatchAndWait(ev));
|
|
}
|
|
}
|
|
return Promise.all(results);
|
|
},
|
|
handleNullMessage: function(envelope, nullMessage) {
|
|
console.log('null message from', this.getEnvelopeId(envelope));
|
|
this.removeFromCache(envelope);
|
|
},
|
|
handleSyncMessage: function(envelope, syncMessage) {
|
|
if (envelope.source !== this.number) {
|
|
throw new Error('Received sync message from another number');
|
|
}
|
|
if (envelope.sourceDevice == this.deviceId) {
|
|
throw new Error('Received sync message from our own device');
|
|
}
|
|
if (syncMessage.sent) {
|
|
var sentMessage = syncMessage.sent;
|
|
var to = sentMessage.message.group
|
|
? 'group(' + sentMessage.message.group.id.toBinary() + ')'
|
|
: sentMessage.destination;
|
|
|
|
console.log('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) {
|
|
console.log('Got SyncMessage Request');
|
|
return this.removeFromCache(envelope);
|
|
} else if (syncMessage.read && syncMessage.read.length) {
|
|
console.log('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.settings) {
|
|
return this.handleSettings(envelope, syncMessage.settings);
|
|
} else {
|
|
throw new Error('Got empty SyncMessage');
|
|
}
|
|
},
|
|
handleSettings: function(envelope, settings) {
|
|
var ev = new Event('settings');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.settings = {
|
|
readReceipts: settings.readReceipts
|
|
};
|
|
return this.dispatchAndWait(ev);
|
|
},
|
|
handleVerified: function(envelope, verified) {
|
|
var 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: function(envelope, read) {
|
|
var results = [];
|
|
for (var i = 0; i < read.length; ++i) {
|
|
var 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: function(envelope, contacts) {
|
|
console.log('contact sync');
|
|
var attachmentPointer = contacts.blob;
|
|
return this.handleAttachment(attachmentPointer).then(function() {
|
|
var results = [];
|
|
var contactBuffer = new ContactBuffer(attachmentPointer.data);
|
|
var contactDetails = contactBuffer.next();
|
|
while (contactDetails !== undefined) {
|
|
var ev = new Event('contact');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.contactDetails = contactDetails;
|
|
results.push(this.dispatchAndWait(ev));
|
|
|
|
contactDetails = contactBuffer.next();
|
|
}
|
|
|
|
var ev = new Event('contactsync');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
results.push(this.dispatchAndWait(ev));
|
|
|
|
return Promise.all(results);
|
|
}.bind(this));
|
|
},
|
|
handleGroups: function(envelope, groups) {
|
|
console.log('group sync');
|
|
var attachmentPointer = groups.blob;
|
|
return this.handleAttachment(attachmentPointer).then(function() {
|
|
var groupBuffer = new GroupBuffer(attachmentPointer.data);
|
|
var groupDetails = groupBuffer.next();
|
|
var promises = [];
|
|
while (groupDetails !== undefined) {
|
|
var promise = (function(groupDetails) {
|
|
groupDetails.id = groupDetails.id.toBinary();
|
|
if (groupDetails.active) {
|
|
return textsecure.storage.groups.getGroup(groupDetails.id).
|
|
then(function(existingGroup) {
|
|
if (existingGroup === undefined) {
|
|
return textsecure.storage.groups.createNewGroup(
|
|
groupDetails.members, groupDetails.id
|
|
);
|
|
} else {
|
|
return textsecure.storage.groups.updateNumbers(
|
|
groupDetails.id, groupDetails.members
|
|
);
|
|
}
|
|
}).then(function() { return groupDetails });
|
|
} else {
|
|
return Promise.resolve(groupDetails);
|
|
}
|
|
})(groupDetails).then(function(groupDetails) {
|
|
var ev = new Event('group');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
ev.groupDetails = groupDetails;
|
|
return this.dispatchAndWait(ev);
|
|
}.bind(this)).catch(function(e) {
|
|
console.log('error processing group', e);
|
|
});
|
|
groupDetails = groupBuffer.next();
|
|
promises.push(promise);
|
|
}
|
|
|
|
Promise.all(promises).then(function() {
|
|
var ev = new Event('groupsync');
|
|
ev.confirm = this.removeFromCache.bind(this, envelope);
|
|
return this.dispatchAndWait(ev);
|
|
}.bind(this));
|
|
}.bind(this));
|
|
},
|
|
handleBlocked: function(envelope, blocked) {
|
|
console.log('Setting these numbers as blocked:', blocked.numbers);
|
|
textsecure.storage.put('blocked', blocked.numbers);
|
|
},
|
|
isBlocked: function(number) {
|
|
return textsecure.storage.get('blocked', []).indexOf(number) >= 0;
|
|
},
|
|
handleAttachment: function(attachment) {
|
|
attachment.id = attachment.id.toString();
|
|
attachment.key = attachment.key.toArrayBuffer();
|
|
if (attachment.digest) {
|
|
attachment.digest = attachment.digest.toArrayBuffer();
|
|
}
|
|
function decryptAttachment(encrypted) {
|
|
return textsecure.crypto.decryptAttachment(
|
|
encrypted,
|
|
attachment.key,
|
|
attachment.digest
|
|
);
|
|
}
|
|
|
|
function updateAttachment(data) {
|
|
attachment.data = data;
|
|
}
|
|
|
|
return this.server.getAttachment(attachment.id)
|
|
.then(decryptAttachment)
|
|
.then(updateAttachment);
|
|
},
|
|
validateRetryContentMessage: function(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
|
|
var 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
|
|
var data = content.dataMessage;
|
|
if (data && !data.attachments.length && !data.body && !data.expireTimer && !data.flags && !data.group) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
},
|
|
tryMessageAgain: function(from, ciphertext, message) {
|
|
var address = libsignal.SignalProtocolAddress.fromString(from);
|
|
var sentAt = message.sent_at || Date.now();
|
|
var receivedAt = message.received_at || Date.now();
|
|
|
|
var ourNumber = textsecure.storage.user.getNumber();
|
|
var number = address.getName();
|
|
var device = address.getDeviceId();
|
|
var options = {};
|
|
|
|
// No limit on message keys if we're communicating with our other devices
|
|
if (ourNumber === number) {
|
|
options.messageKeysLimit = false;
|
|
}
|
|
|
|
var sessionCipher = new libsignal.SessionCipher(textsecure.storage.protocol, address, options);
|
|
console.log('retrying prekey whisper message');
|
|
return this.decryptPreKeyWhisperMessage(ciphertext, sessionCipher, address).then(function(plaintext) {
|
|
var envelope = {
|
|
source: number,
|
|
sourceDevice: device,
|
|
receivedAt: receivedAt,
|
|
timestamp: {
|
|
toNumber: function() {
|
|
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();
|
|
var 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
|
|
var 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);
|
|
}.bind(this));
|
|
},
|
|
handleEndSession: function(number) {
|
|
console.log('got end session');
|
|
return textsecure.storage.protocol.getDeviceIds(number).then(function(deviceIds) {
|
|
return Promise.all(deviceIds.map(function(deviceId) {
|
|
var address = new libsignal.SignalProtocolAddress(number, deviceId);
|
|
var sessionCipher = new libsignal.SessionCipher(textsecure.storage.protocol, address);
|
|
|
|
console.log('deleting sessions for', address.toString());
|
|
return sessionCipher.deleteAllSessionsForDevice();
|
|
}));
|
|
});
|
|
},
|
|
processDecrypted: function(envelope, decrypted, source) {
|
|
// 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 & textsecure.protobuf.DataMessage.Flags.END_SESSION) {
|
|
decrypted.body = null;
|
|
decrypted.attachments = [];
|
|
decrypted.group = null;
|
|
return Promise.resolve(decrypted);
|
|
} else if (decrypted.flags & textsecure.protobuf.DataMessage.Flags.EXPIRATION_TIMER_UPDATE ) {
|
|
decrypted.body = null;
|
|
decrypted.attachments = [];
|
|
} else if (decrypted.flags & textsecure.protobuf.DataMessage.Flags.PROFILE_KEY_UPDATE) {
|
|
decrypted.body = null;
|
|
decrypted.attachments = [];
|
|
} else if (decrypted.flags != 0) {
|
|
throw new Error("Unknown flags in message");
|
|
}
|
|
|
|
var 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));
|
|
}
|
|
}
|
|
|
|
promises.push(textsecure.storage.groups.getNumbers(decrypted.group.id).then(function(existingGroup) {
|
|
if (existingGroup === undefined) {
|
|
if (decrypted.group.type != textsecure.protobuf.GroupContext.Type.UPDATE) {
|
|
decrypted.group.members = [source];
|
|
console.log("Got message for unknown group");
|
|
}
|
|
return textsecure.storage.groups.createNewGroup(decrypted.group.members, decrypted.group.id);
|
|
} else {
|
|
var fromIndex = existingGroup.indexOf(source);
|
|
|
|
if (fromIndex < 0) {
|
|
//TODO: This could be indication of a race...
|
|
console.log("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
|
|
);
|
|
|
|
break;
|
|
case textsecure.protobuf.GroupContext.Type.QUIT:
|
|
decrypted.body = null;
|
|
decrypted.attachments = [];
|
|
if (source === this.number) {
|
|
return textsecure.storage.groups.deleteGroup(decrypted.group.id);
|
|
} else {
|
|
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;
|
|
|
|
break;
|
|
default:
|
|
this.removeFromCache(envelope);
|
|
throw new Error("Unknown group message type");
|
|
}
|
|
}
|
|
}.bind(this)));
|
|
}
|
|
|
|
for (var i in decrypted.attachments) {
|
|
promises.push(this.handleAttachment(decrypted.attachments[i]));
|
|
}
|
|
return Promise.all(promises).then(function() {
|
|
return decrypted;
|
|
});
|
|
}
|
|
});
|
|
|
|
window.textsecure = window.textsecure || {};
|
|
|
|
textsecure.MessageReceiver = function(url, username, password, signalingKey, options) {
|
|
var messageReceiver = new MessageReceiver(url, 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.replay.registerFunction(messageReceiver.tryMessageAgain.bind(messageReceiver), textsecure.replay.Type.INIT_SESSION);
|
|
};
|
|
|
|
textsecure.MessageReceiver.prototype = {
|
|
constructor: textsecure.MessageReceiver
|
|
};
|
|
|