/*! * Webogram v0.3.1 - messaging web application for MTProto * https://github.com/zhukov/webogram * Copyright (C) 2014 Igor Zhukov * https://github.com/zhukov/webogram/blob/master/LICENSE */ angular.module('izhukov.mtproto', ['izhukov.utils']) .factory('MtpDcConfigurator', function () { var dcOptions = Config.Modes.test ? [ {id: 1, host: '173.240.5.253', port: 80}, {id: 2, host: '149.154.167.40', port: 80}, {id: 3, host: '174.140.142.5', port: 80} ] : [ {id: 1, host: '173.240.5.1', port: 80}, {id: 2, host: '149.154.167.51', port: 80}, {id: 3, host: '174.140.142.6', port: 80}, {id: 4, host: '149.154.167.91', port: 80}, {id: 5, host: '149.154.171.5', port: 80} ]; var chosenServers = {}; function chooseServer(dcID) { if (chosenServers[dcID] === undefined) { var chosenServer = false, i, dcOption; for (i = 0; i < dcOptions.length; i++) { dcOption = dcOptions[i]; if (dcOption.id == dcID) { chosenServer = dcOption.host + ':' + dcOption.port; } } chosenServers[dcID] = chosenServer; } return chosenServers[dcID]; } return { chooseServer: chooseServer }; }) .factory('MtpRsaKeysManager', function () { /** * Server public key, obtained from here: https://core.telegram.org/api/obtaining_api_id * * -----BEGIN RSA PUBLIC KEY----- * MIIBCgKCAQEAwVACPi9w23mF3tBkdZz+zwrzKOaaQdr01vAbU4E1pvkfj4sqDsm6 * lyDONS789sVoD/xCS9Y0hkkC3gtL1tSfTlgCMOOul9lcixlEKzwKENj1Yz/s7daS * an9tqw3bfUV/nqgbhGX81v/+7RFAEd+RwFnK7a+XYl9sluzHRyVVaTTveB2GazTw * Efzk2DWgkBluml8OREmvfraX3bkHZJTKX4EQSjBbbdJ2ZXIsRrYOXfaA+xayEGB+ * 8hdlLmAjbCVfaigxX0CDqWeR1yFL9kwd9P0NsZRPsmoqVwMbMu7mStFai6aIhc3n * Slv8kg9qv1m6XHVQY3PnEw+QQtqSIXklHwIDAQAB * -----END RSA PUBLIC KEY----- */ var publisKeysHex = [{ modulus: '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', exponent: '010001' }]; var publicKeysParsed = {}; var prepared = false; function prepareRsaKeys () { if (prepared) { return; } for (var i = 0; i < publisKeysHex.length; i++) { var keyParsed = publisKeysHex[i]; var RSAPublicKey = new TLSerialization(); RSAPublicKey.storeBytes(bytesFromHex(keyParsed.modulus), 'n'); RSAPublicKey.storeBytes(bytesFromHex(keyParsed.exponent), 'e'); var buffer = RSAPublicKey.getBuffer(); var fingerprintBytes = sha1Hash(buffer).slice(-8); fingerprintBytes.reverse(); publicKeysParsed[bytesToHex(fingerprintBytes)] = { modulus: keyParsed.modulus, exponent: keyParsed.exponent }; } prepared = true; }; function selectRsaKeyByFingerPrint (fingerprints) { prepareRsaKeys(); var fingerprintHex, foundKey, i; for (i = 0; i < fingerprints.length; i++) { fingerprintHex = bigStringInt(fingerprints[i]).toString(16); if (foundKey = publicKeysParsed[fingerprintHex]) { return angular.extend({fingerprint: fingerprints[i]}, foundKey); } } return false; }; return { prepare: prepareRsaKeys, select: selectRsaKeyByFingerPrint }; }) .service('MtpSecureRandom', function () { return new SecureRandom(); }) .factory('MtpTimeManager', function (Storage) { var lastMessageID = [0, 0], timeOffset = 0; Storage.get('server_time_offset').then(function (to) { if (to) { timeOffset = to; } }); function generateMessageID () { var timeTicks = tsNow(), timeSec = Math.floor(timeTicks / 1000) + timeOffset, timeMSec = timeTicks % 1000, random = nextRandomInt(0xFFFF); var messageID = [timeSec, (timeMSec << 21) | (random << 3) | 4]; if (lastMessageID[0] > messageID[0] || lastMessageID[0] == messageID[0] && lastMessageID[1] >= messageID[1]) { messageID = [lastMessageID[0], lastMessageID[1] + 4]; } lastMessageID = messageID; // console.log('generated msg id', messageID); return longFromInts(messageID[0], messageID[1]); }; function applyServerTime (serverTime, localTime) { var newTimeOffset = serverTime - Math.floor((localTime || tsNow()) / 1000), changed = Math.abs(timeOffset - newTimeOffset) > 10; Storage.set({server_time_offset: newTimeOffset}); lastMessageID = [0, 0]; timeOffset = newTimeOffset; console.log(dT(), 'Apply server time', serverTime, localTime, newTimeOffset, changed); return changed; }; return { generateID: generateMessageID, applyServerTime: applyServerTime, }; }) .factory('MtpAuthorizer', function (MtpDcConfigurator, MtpRsaKeysManager, MtpSecureRandom, MtpTimeManager, CryptoWorker, $http, $q, $timeout) { var chromeMatches = navigator.userAgent.match(/Chrome\/(\d+(\.\d+)?)/), chromeVersion = chromeMatches && parseFloat(chromeMatches[1]) || false; function mtpSendPlainRequest (dcID, requestBuffer) { var requestLength = requestBuffer.byteLength, requestArray = new Int32Array(requestBuffer); var header = new TLSerialization(); header.storeLongP(0, 0, 'auth_key_id'); // Auth key header.storeLong(MtpTimeManager.generateID(), 'msg_id'); // Msg_id header.storeInt(requestLength, 'request_length'); var headerBuffer = header.getBuffer(), headerArray = new Int32Array(headerBuffer), headerLength = headerBuffer.byteLength; var resultBuffer = new ArrayBuffer(headerLength + requestLength), resultArray = new Int32Array(resultBuffer); resultArray.set(headerArray); resultArray.set(requestArray, headerArray.length); delete $http.defaults.headers.post['Content-Type']; delete $http.defaults.headers.common['Accept']; if (!('ArrayBufferView' in window) && (!chromeVersion || chromeVersion < 30)) { resultArray = resultArray.buffer; } return $http.post('http://' + MtpDcConfigurator.chooseServer(dcID) + '/apiw1', resultArray, { responseType: 'arraybuffer', transformRequest: null }).then( function (result) { if (!result.data || !result.data.byteLength) { return $q.reject({code: 406, type: 'NETWORK_BAD_RESPONSE'}); } try { var deserializer = new TLDeserialization(result.data, {mtproto: true}); var auth_key_id = deserializer.fetchLong('auth_key_id'); var msg_id = deserializer.fetchLong('msg_id'); var msg_len = deserializer.fetchInt('msg_len'); } catch (e) { return $q.reject({code: 406, type: 'NETWORK_BAD_RESPONSE', originalError: e}); } rng_seed_time(); return deserializer; }, function (error) { if (!error.message && !error.type) { error = {code: 406, type: 'NETWORK_BAD_REQUEST', originalError: error}; } return $q.reject(error); } ); }; function mtpSendReqPQ (auth) { var deferred = auth.deferred; var request = new TLSerialization({mtproto: true}); request.storeMethod('req_pq', {nonce: auth.nonce}); console.log(dT(), 'Send req_pq', bytesToHex(auth.nonce)); mtpSendPlainRequest(auth.dcID, request.getBuffer()).then(function (deserializer) { var response = deserializer.fetchObject('ResPQ'); if (response._ != 'resPQ') { throw new Error('resPQ response invalid: ' + response._); } if (!bytesCmp (auth.nonce, response.nonce)) { throw new Error('resPQ nonce mismatch'); } auth.serverNonce = response.server_nonce; auth.pq = response.pq; auth.fingerprints = response.server_public_key_fingerprints; console.log(dT(), 'Got ResPQ', bytesToHex(auth.serverNonce), bytesToHex(auth.pq), auth.fingerprints); auth.publicKey = MtpRsaKeysManager.select(auth.fingerprints); if (!auth.publicKey) { throw new Error('No public key found'); } console.log(dT(), 'PQ factorization start', auth.pq); CryptoWorker.factorize(auth.pq).then(function (pAndQ) { auth.p = pAndQ[0]; auth.q = pAndQ[1]; console.log(dT(), 'PQ factorization done', pAndQ[2]); mtpSendReqDhParams(auth); }, function (error) { console.log('Worker error', error, error.stack); deferred.reject(error); }); }, function (error) { console.log(dT(), 'req_pq error', error.message); deferred.reject(error); }); $timeout(function () { MtpRsaKeysManager.prepare(); }); }; function mtpSendReqDhParams (auth) { var deferred = auth.deferred; auth.newNonce = new Array(32); MtpSecureRandom.nextBytes(auth.newNonce); var data = new TLSerialization({mtproto: true}); data.storeObject({ _: 'p_q_inner_data', pq: auth.pq, p: auth.p, q: auth.q, nonce: auth.nonce, server_nonce: auth.serverNonce, new_nonce: auth.newNonce }, 'P_Q_inner_data', 'DECRYPTED_DATA'); var dataWithHash = sha1Hash(data.getBuffer()).concat(data.getBytes()); var request = new TLSerialization({mtproto: true}); request.storeMethod('req_DH_params', { nonce: auth.nonce, server_nonce: auth.serverNonce, p: auth.p, q: auth.q, public_key_fingerprint: auth.publicKey.fingerprint, encrypted_data: rsaEncrypt(auth.publicKey, dataWithHash) }); console.log(dT(), 'Send req_DH_params'); mtpSendPlainRequest(auth.dcID, request.getBuffer()).then(function (deserializer) { var response = deserializer.fetchObject('Server_DH_Params', 'RESPONSE'); if (response._ != 'server_DH_params_fail' && response._ != 'server_DH_params_ok') { deferred.reject(new Error('Server_DH_Params response invalid: ' + response._)); return false; } if (!bytesCmp (auth.nonce, response.nonce)) { deferred.reject(new Error('Server_DH_Params nonce mismatch')); return false; } if (!bytesCmp (auth.serverNonce, response.server_nonce)) { deferred.reject(new Error('Server_DH_Params server_nonce mismatch')); return false; } if (response._ == 'server_DH_params_fail') { var newNonceHash = sha1Hash(auth.newNonce).slice(-16) if (!bytesCmp (newNonceHash, response.new_nonce_hash)) { deferred.reject(new Error('server_DH_params_fail new_nonce_hash mismatch')); return false; } deferred.reject(new Error('server_DH_params_fail')); return false; } try { mtpDecryptServerDhDataAnswer(auth, response.encrypted_answer); } catch (e) { deferred.reject(e); return false; } mtpSendSetClientDhParams(auth); }, function (error) { deferred.reject(error); }); }; function mtpDecryptServerDhDataAnswer (auth, encryptedAnswer) { auth.localTime = tsNow(); auth.tmpAesKey = sha1Hash(auth.newNonce.concat(auth.serverNonce)).concat(sha1Hash(auth.serverNonce.concat(auth.newNonce)).slice(0, 12)); auth.tmpAesIv = sha1Hash(auth.serverNonce.concat(auth.newNonce)).slice(12).concat(sha1Hash([].concat(auth.newNonce, auth.newNonce)), auth.newNonce.slice(0, 4)); var answerWithHash = aesDecrypt(encryptedAnswer, auth.tmpAesKey, auth.tmpAesIv); var hash = answerWithHash.slice(0, 20); var answerWithPadding = answerWithHash.slice(20); var buffer = bytesToArrayBuffer(answerWithPadding); var deserializer = new TLDeserialization(buffer, {mtproto: true}); var response = deserializer.fetchObject('Server_DH_inner_data'); if (response._ != 'server_DH_inner_data') { throw new Error('server_DH_inner_data response invalid: ' + constructor); } if (!bytesCmp (auth.nonce, response.nonce)) { throw new Error('server_DH_inner_data nonce mismatch'); } if (!bytesCmp (auth.serverNonce, response.server_nonce)) { throw new Error('server_DH_inner_data serverNonce mismatch'); } console.log(dT(), 'Done decrypting answer'); auth.g = response.g; auth.dhPrime = response.dh_prime; auth.gA = response.g_a; auth.serverTime = response.server_time; auth.retry = 0; var offset = deserializer.getOffset(); if (!bytesCmp(hash, sha1Hash(answerWithPadding.slice(0, offset)))) { throw new Error('server_DH_inner_data SHA1-hash mismatch'); } MtpTimeManager.applyServerTime(auth.serverTime, auth.localTime); }; function mtpSendSetClientDhParams(auth) { var deferred = auth.deferred, gBytes = bytesFromHex(auth.g.toString(16)); auth.b = new Array(256); MtpSecureRandom.nextBytes(auth.b); CryptoWorker.modPow(gBytes, auth.b, auth.dhPrime).then(function (gB) { var data = new TLSerialization({mtproto: true}); data.storeObject({ _: 'client_DH_inner_data', nonce: auth.nonce, server_nonce: auth.serverNonce, retry_id: [0, auth.retry++], g_b: gB, }, 'Client_DH_Inner_Data'); var dataWithHash = sha1Hash(data.getBuffer()).concat(data.getBytes()); var encryptedData = aesEncrypt(dataWithHash, auth.tmpAesKey, auth.tmpAesIv); var request = new TLSerialization({mtproto: true}); request.storeMethod('set_client_DH_params', { nonce: auth.nonce, server_nonce: auth.serverNonce, encrypted_data: encryptedData }); console.log(dT(), 'Send set_client_DH_params'); mtpSendPlainRequest(auth.dcID, request.getBuffer()).then(function (deserializer) { var response = deserializer.fetchObject('Set_client_DH_params_answer'); if (response._ != 'dh_gen_ok' && response._ != 'dh_gen_retry' && response._ != 'dh_gen_fail') { deferred.reject(new Error('Set_client_DH_params_answer response invalid: ' + response._)); return false; } if (!bytesCmp (auth.nonce, response.nonce)) { deferred.reject(new Error('Set_client_DH_params_answer nonce mismatch')); return false } if (!bytesCmp (auth.serverNonce, response.server_nonce)) { deferred.reject(new Error('Set_client_DH_params_answer server_nonce mismatch')); return false; } CryptoWorker.modPow(auth.gA, auth.b, auth.dhPrime).then(function (authKey) { var authKeyHash = sha1Hash(authKey), authKeyAux = authKeyHash.slice(0, 8), authKeyID = authKeyHash.slice(-8); console.log(dT(), 'Got Set_client_DH_params_answer', response._); switch (response._) { case 'dh_gen_ok': var newNonceHash1 = sha1Hash(auth.newNonce.concat([1], authKeyAux)).slice(-16); if (!bytesCmp(newNonceHash1, response.new_nonce_hash1)) { deferred.reject(new Error('Set_client_DH_params_answer new_nonce_hash1 mismatch')); return false; } var serverSalt = bytesXor(auth.newNonce.slice(0, 8), auth.serverNonce.slice(0, 8)); // console.log('Auth successfull!', authKeyID, authKey, serverSalt); auth.authKeyID = authKeyID; auth.authKey = authKey; auth.serverSalt = serverSalt; deferred.resolve(auth); break; case 'dh_gen_retry': var newNonceHash2 = sha1Hash(auth.newNonce.concat([2], authKeyAux)).slice(-16); if (!bytesCmp(newNonceHash2, response.new_nonce_hash2)) { deferred.reject(new Error('Set_client_DH_params_answer new_nonce_hash2 mismatch')); return false; } return mtpSendSetClientDhParams(auth); case 'dh_gen_fail': var newNonceHash3 = sha1Hash(auth.newNonce.concat([3], authKeyAux)).slice(-16); if (!bytesCmp(newNonceHash3, response.new_nonce_hash3)) { deferred.reject(new Error('Set_client_DH_params_answer new_nonce_hash3 mismatch')); return false; } deferred.reject(new Error('Set_client_DH_params_answer fail')); return false; } }, function (error) { deferred.reject(error); }) }, function (error) { deferred.reject(error); }); }, function (error) { deferred.reject(error); }) }; var cached = {}; function mtpAuth (dcID) { if (cached[dcID] !== undefined) { return cached[dcID]; } var nonce = []; for (var i = 0; i < 16; i++) { nonce.push(nextRandomInt(0xFF)); } if (!MtpDcConfigurator.chooseServer(dcID)) { return $q.reject(new Error('No server found for dc ' + dcID)); } var auth = { dcID: dcID, nonce: nonce, deferred: $q.defer() }; $timeout(function () { mtpSendReqPQ(auth); }); cached[dcID] = auth.deferred.promise; cached[dcID]['catch'](function () { delete cached[dcID]; }) return cached[dcID]; }; return { auth: mtpAuth }; }) .factory('MtpNetworkerFactory', function (MtpDcConfigurator, MtpTimeManager, MtpSecureRandom, Storage, CryptoWorker, $http, $q, $timeout, $interval, $rootScope) { var updatesProcessor, iii = 0, offline, offlineInited = false, chromeMatches = navigator.userAgent.match(/Chrome\/(\d+(\.\d+)?)/), chromeVersion = chromeMatches && parseFloat(chromeMatches[1]) || false; $rootScope.retryOnline = function () { $(document.body).trigger('online'); } function MtpNetworker(dcID, authKey, serverSalt, options) { options = options || {}; this.dcID = dcID; this.iii = iii++; this.authKey = authKey; this.authKeyID = sha1Hash(authKey).slice(-8); this.serverSalt = serverSalt; this.upload = options.fileUpload || options.fileDownload || false; this.updateSession(); this.currentRequests = 0; this.checkConnectionPeriod = 0; this.sentMessages = {}; this.serverMessages = []; this.clientMessages = []; this.pendingMessages = {}; this.pendingAcks = []; this.pendingResends = []; this.connectionInited = false; this.pendingTimeouts = []; this.longPollInt = $interval(this.checkLongPoll.bind(this), 10000); this.checkLongPoll(); if (!offlineInited) { offlineInited = true; $rootScope.offline = true; $rootScope.offlineConnecting = true; } if (Config.Navigator.mobile) { this.setupMobileSleep(); } }; MtpNetworker.prototype.updateSession = function () { this.seqNo = 0; this.sessionID = new Array(8); MtpSecureRandom.nextBytes(this.sessionID); if (false) { this.sessionID[0] = 0xAB; this.sessionID[1] = 0xCD; } }; MtpNetworker.prototype.setupMobileSleep = function () { var self = this; $rootScope.$watch('idle.isIDLE', function (isIDLE) { if (isIDLE) { self.sleepAfter = tsNow() + 30000; } else { delete self.sleepAfter; self.checkLongPoll(); } }); $rootScope.$on('push_received', function () { // console.log(dT(), 'push recieved', self.sleepAfter); if (self.sleepAfter) { self.sleepAfter = tsNow() + 30000; self.checkLongPoll(); } }); }; MtpNetworker.prototype.updateSentMessage = function (sentMessageID) { var sentMessage = this.sentMessages[sentMessageID]; if (!sentMessage) { return false; } var self = this; if (sentMessage.container) { var newInner = []; angular.forEach(sentMessage.inner, function(innerSentMessageID){ var innerSentMessage = self.updateSentMessage(innerSentMessageID); if (innerSentMessage) { newInner.push(innerSentMessage.msg_id); } }); sentMessage.inner = newInner; } sentMessage.msg_id = MtpTimeManager.generateID(); sentMessage.seq_no = this.generateSeqNo( sentMessage.notContentRelated || sentMessage.container ); this.sentMessages[sentMessage.msg_id] = sentMessage; delete self.sentMessages[sentMessageID]; return sentMessage; }; MtpNetworker.prototype.generateSeqNo = function (notContentRelated) { var seqNo = this.seqNo * 2; if (!notContentRelated) { seqNo++; this.seqNo++; } return seqNo; } MtpNetworker.prototype.wrapMtpCall = function (method, params, options) { var serializer = new TLSerialization({mtproto: true}); serializer.storeMethod(method, params); var messageID = MtpTimeManager.generateID(), seqNo = this.generateSeqNo(), message = { msg_id: messageID, seq_no: seqNo, body: serializer.getBytes() }; if (Config.Modes.debug) { console.log(dT(), 'MT call', method, params, messageID, seqNo); } return this.pushMessage(message, options); }; MtpNetworker.prototype.wrapMtpMessage = function (object, options) { options = options || {}; var serializer = new TLSerialization({mtproto: true}); serializer.storeObject(object, 'Object'); var messageID = MtpTimeManager.generateID(), seqNo = this.generateSeqNo(options.notContentRelated), message = { msg_id: messageID, seq_no: seqNo, body: serializer.getBytes() }; if (Config.Modes.debug) { console.log(dT(), 'MT message', object, messageID, seqNo); } return this.pushMessage(message, options); }; MtpNetworker.prototype.wrapApiCall = function (method, params, options) { var serializer = new TLSerialization(options); if (!this.connectionInited) { serializer.storeInt(0x1c900537, 'invokeWithLayer18'); serializer.storeInt(0x69796de9, 'initConnection'); serializer.storeInt(Config.App.id, 'api_id'); serializer.storeString(navigator.userAgent || 'Unknown UserAgent', 'device_model'); serializer.storeString(navigator.platform || 'Unknown Platform', 'system_version'); serializer.storeString(Config.App.version, 'app_version'); serializer.storeString(navigator.language || 'en', 'lang_code'); } if (options.afterMessageID) { serializer.storeInt(0xcb9f372d, 'invokeAfterMsg'); serializer.storeLong(options.afterMessageID, 'msg_id'); } options.resultType = serializer.storeMethod(method, params); var messageID = MtpTimeManager.generateID(), seqNo = this.generateSeqNo(), message = { msg_id: messageID, seq_no: seqNo, body: serializer.getBytes(), isAPI: true }; if (Config.Modes.debug) { console.log(dT(), 'Api call', method, params, messageID, seqNo, options); } else { console.log(dT(), 'Api call', method); } return this.pushMessage(message, options); }; MtpNetworker.prototype.checkLongPoll = function(force) { var isClean = this.cleanupSent(); // console.log('Check lp', this.longPollPending, tsNow(), this.dcID, isClean); if (this.longPollPending && tsNow() < this.longPollPending || this.offline) { return false; } var self = this; Storage.get('dc').then(function (baseDcID) { if (isClean && ( baseDcID != self.dcID || self.upload || self.sleepAfter && tsNow() > self.sleepAfter )) { // console.warn(dT(), 'Send long-poll for DC is delayed', self.dcID, self.sleepAfter); return; } self.sendLongPoll(); }); }; MtpNetworker.prototype.sendLongPoll = function() { var maxWait = 25000, self = this; this.longPollPending = tsNow() + maxWait; // console.log('Set lp', this.longPollPending, tsNow()); this.wrapMtpCall('http_wait', { max_delay: 0, wait_after: 0, max_wait: maxWait }, { noResponse: true, longPoll: true }).then(function () { delete self.longPollPending; $timeout(self.checkLongPoll.bind(self), 0); }, function () { console.log('Long-poll failed'); }); }; MtpNetworker.prototype.pushMessage = function(message, options) { var deferred = $q.defer(); this.sentMessages[message.msg_id] = angular.extend(message, options || {}, {deferred: deferred}); this.pendingMessages[message.msg_id] = 0; if (!options || !options.noShedule) { this.sheduleRequest(); } if (angular.isObject(options)) { options.messageID = message.msg_id; } return deferred.promise; }; MtpNetworker.prototype.pushResend = function(messageID, delay) { var value = delay ? tsNow() + delay : 0; var sentMessage = this.sentMessages[messageID]; if (sentMessage.container) { for (var i = 0; i < sentMessage.inner.length; i++) { this.pendingMessages[sentMessage.inner[i]] = value; } } else { this.pendingMessages[messageID] = value; } // console.log('Resend due', messageID, this.pendingMessages); this.sheduleRequest(delay); }; MtpNetworker.prototype.getMsgKeyIv = function (msgKey, isOut) { var authKey = this.authKey, x = isOut ? 0 : 8; var promises = { sha1a: CryptoWorker.sha1Hash(msgKey.concat(authKey.slice(x, x + 32))), sha1b: CryptoWorker.sha1Hash(authKey.slice(32 + x, 48 + x).concat(msgKey, authKey.slice(48 + x, 64 + x))), sha1c: CryptoWorker.sha1Hash(authKey.slice(64 + x, 96 + x).concat(msgKey)), sha1d: CryptoWorker.sha1Hash(msgKey.concat(authKey.slice(96 + x, 128 + x))) }; return $q.all(promises).then(function (result) { var aesKey = result.sha1a.slice(0, 8).concat(result.sha1b.slice(8, 20), result.sha1c.slice(4, 16)); var aesIv = result.sha1a.slice(8, 20).concat(result.sha1b.slice(0, 8), result.sha1c.slice(16, 20), result.sha1d.slice(0, 8)); return [aesKey, aesIv]; }); }; MtpNetworker.prototype.checkConnection = function(event) { $rootScope.offlineConnecting = true; console.log(dT(), 'Check connection', event); $timeout.cancel(this.checkConnectionPromise); var serializer = new TLSerialization({mtproto: true}), pingID = [nextRandomInt(0xFFFFFFFF), nextRandomInt(0xFFFFFFFF)]; serializer.storeMethod('ping', {ping_id: pingID}); var pingMessage = { msg_id: MtpTimeManager.generateID(), seq_no: this.generateSeqNo(true), body: serializer.getBytes() }; var self = this; this.sendEncryptedRequest(pingMessage).then(function (result) { delete $rootScope.offlineConnecting; self.toggleOffline(false); }, function () { console.log(dT(), 'Delay ', self.checkConnectionPeriod * 1000); self.checkConnectionPromise = $timeout(self.checkConnection.bind(self), parseInt(self.checkConnectionPeriod * 1000)); self.checkConnectionPeriod = Math.min(60, self.checkConnectionPeriod * 1.5); $timeout(function () { delete $rootScope.offlineConnecting; }, 1000); }) }; MtpNetworker.prototype.toggleOffline = function(enabled) { // console.log('toggle ', enabled, this.dcID, this.iii); if (this.offline !== undefined && this.offline == enabled) { return false; } this.offline = enabled; $rootScope.offline = enabled; $rootScope.offlineConnecting = false; if (this.offline) { $timeout.cancel(this.nextReqPromise); delete this.nextReq; if (this.checkConnectionPeriod < 1.5) { this.checkConnectionPeriod = 0; } this.checkConnectionPromise = $timeout(this.checkConnection.bind(this), parseInt(this.checkConnectionPeriod * 1000)); this.checkConnectionPeriod = Math.min(60, (1 + this.checkConnectionPeriod) * 1.5); this.onOnlineCb = this.checkConnection.bind(this); $(document.body).on('online', this.onOnlineCb); } else { delete this.longPollPending; this.checkLongPoll(); this.sheduleRequest(); if (this.onOnlineCb) { $(document.body).off('online', this.onOnlineCb); } $timeout.cancel(this.checkConnectionPromise); } }; MtpNetworker.prototype.performSheduledRequest = function() { // console.trace('sheduled', this.dcID, this.iii); if (this.offline) { console.log(dT(), 'Cancel sheduled'); return false; } delete this.nextReq; if (this.pendingAcks.length) { var ackMsgIDs = []; for (var i = 0; i < this.pendingAcks.length; i++) { ackMsgIDs.push(this.pendingAcks[i]); } // console.log('acking messages', ackMsgIDs); this.wrapMtpMessage({_: 'msgs_ack', msg_ids: ackMsgIDs}, {notContentRelated: true, noShedule: true}); } if (this.pendingResends.length) { var resendMsgIDs = [], resendOpts = {noShedule: true, notContentRelated: true}; for (var i = 0; i < this.pendingResends.length; i++) { resendMsgIDs.push(this.pendingResends[i]); } // console.log('resendReq messages', resendMsgIDs); this.wrapMtpMessage({_: 'msg_resend_req', msg_ids: resendMsgIDs}, resendOpts); this.lastResendReq = {req_msg_id: resendOpts.messageID, resend_msg_ids: resendMsgIDs}; } var messages = [], message, messagesByteLen = 0, currentTime = tsNow(), hasApiCall = false, hasHttpWait = false, self = this; angular.forEach(this.pendingMessages, function (value, messageID) { if (!value || value >= currentTime) { if (message = self.sentMessages[messageID]) { messages.push(message); messagesByteLen += message.body.length + 32; if (message.isAPI) { hasApiCall = true; } else if (message.longPoll) { hasHttpWait = true; } } else { // console.log(message, messageID); } delete self.pendingMessages[messageID]; } }); if (hasApiCall && !hasHttpWait) { var serializer = new TLSerialization({mtproto: true}); serializer.storeMethod('http_wait', {max_delay: 0, wait_after: 0, max_wait: 1000}); messages.push({ msg_id: MtpTimeManager.generateID(), seq_no: this.generateSeqNo(), body: serializer.getBytes() }); } if (!messages.length) { // console.log('no sheduled messages'); return; } var noResponseMsgs = []; if (messages.length > 1) { var container = new TLSerialization({mtproto: true, startMaxLength: messagesByteLen + 64}); container.storeInt(0x73f1f8dc, 'CONTAINER[id]'); container.storeInt(messages.length, 'CONTAINER[count]'); var onloads = []; var innerMessages = []; for (var i = 0; i < messages.length; i++) { container.storeLong(messages[i].msg_id, 'CONTAINER[' + i + '][msg_id]'); innerMessages.push(messages[i].msg_id); container.storeInt(messages[i].seq_no, 'CONTAINER[' + i + '][seq_no]'); container.storeInt(messages[i].body.length, 'CONTAINER[' + i + '][bytes]'); container.storeRawBytes(messages[i].body, 'CONTAINER[' + i + '][body]'); if (messages[i].noResponse) { noResponseMsgs.push(messages[i].msg_id); } } var containerSentMessage = { msg_id: MtpTimeManager.generateID(), seq_no: this.generateSeqNo(true), container: true, inner: innerMessages } message = angular.extend({body: container.getBytes()}, containerSentMessage); this.sentMessages[message.msg_id] = containerSentMessage; if (Config.Modes.debug) { console.log(dT(), 'Container', innerMessages, message.msg_id, message.seq_no); } } else { if (message.noResponse) { noResponseMsgs.push(message.msg_id); } this.sentMessages[message.msg_id] = message; } this.pendingAcks = []; var self = this; this.sendEncryptedRequest(message).then(function (result) { self.toggleOffline(false); self.parseResponse(result.data).then(function (response) { if (Config.Modes.debug) { console.log(dT(), 'Server response', self.dcID, response); } self.processMessage(response.response, response.messageID, response.sessionID); angular.forEach(noResponseMsgs, function (msgID) { if (self.sentMessages[msgID]) { var deferred = self.sentMessages[msgID].deferred; delete self.sentMessages[msgID]; deferred.resolve(); } }); self.checkLongPoll(); this.checkConnectionPeriod = Math.max(1.1, Math.sqrt(this.checkConnectionPeriod)); }); }, function (error) { console.log('Encrypted request failed', error); if (message.container) { angular.forEach(message.inner, function (msgID) { self.pendingMessages[msgID] = 0; }); delete self.sentMessages[message.msg_id]; } else { self.pendingMessages[message.msg_id] = 0; } angular.forEach(noResponseMsgs, function (msgID) { if (self.sentMessages[msgID]) { var deferred = self.sentMessages[msgID].deferred; delete self.sentMessages[msgID]; delete self.pendingMessages[msgID]; deferred.reject(); } }); self.toggleOffline(true); }); }; MtpNetworker.prototype.getEncryptedMessage = function (bytes) { var self = this; return CryptoWorker.sha1Hash(bytes).then(function (bytesHash) { var msgKey = bytesHash.slice(-16); return self.getMsgKeyIv(msgKey, true).then(function (keyIv) { return CryptoWorker.aesEncrypt(bytes, keyIv[0], keyIv[1]).then(function (encryptedBytes) { return { bytes: encryptedBytes, msgKey: msgKey }; }) }) }) }; MtpNetworker.prototype.getDecryptedMessage = function (msgKey, encryptedData) { return this.getMsgKeyIv(msgKey, false).then(function (keyIv) { return CryptoWorker.aesDecrypt(encryptedData, keyIv[0], keyIv[1]); }); }; MtpNetworker.prototype.sendEncryptedRequest = function (message) { var self = this; // console.log(dT(), 'Send encrypted'/*, message*/); // console.trace(); var data = new TLSerialization({startMaxLength: message.body.length + 64}); data.storeIntBytes(this.serverSalt, 64, 'salt'); data.storeIntBytes(this.sessionID, 64, 'session_id'); data.storeLong(message.msg_id, 'message_id'); data.storeInt(message.seq_no, 'seq_no'); data.storeInt(message.body.length, 'message_data_length'); data.storeRawBytes(message.body, 'message_data'); return this.getEncryptedMessage(data.getBytes()).then(function (encryptedResult) { // console.log(dT(), 'Got encrypted out message'/*, encryptedResult*/); var request = new TLSerialization({startMaxLength: encryptedResult.bytes.length + 256}); request.storeIntBytes(self.authKeyID, 64, 'auth_key_id'); request.storeIntBytes(encryptedResult.msgKey, 128, 'msg_key'); request.storeRawBytes(encryptedResult.bytes, 'encrypted_data'); delete $http.defaults.headers.post['Content-Type']; delete $http.defaults.headers.common['Accept']; var resultArray = request.getArray(); if (!('ArrayBufferView' in window) && (!chromeVersion || chromeVersion < 30)) { resultArray = resultArray.buffer; } return $http.post('http://' + MtpDcConfigurator.chooseServer(self.dcID) + '/apiw1', resultArray, { responseType: 'arraybuffer', transformRequest: null }).then( function (result) { if (!result.data || !result.data.byteLength) { return $q.reject({code: 406, type: 'NETWORK_BAD_RESPONSE'}); } return result; }, function (error) { if (!error.message && !error.type) { error = {code: 406, type: 'NETWORK_BAD_REQUEST'}; } return $q.reject(error); } ); }); }; MtpNetworker.prototype.parseResponse = function (responseBuffer) { // console.log(dT(), 'Start parsing response'); var self = this; var deserializer = new TLDeserialization(responseBuffer); var authKeyID = deserializer.fetchIntBytes(64, 'auth_key_id'); if (!bytesCmp(authKeyID, this.authKeyID)) { throw new Error('Invalid server auth_key_id: ' + bytesToHex(authKeyID)); } var msgKey = deserializer.fetchIntBytes(128, 'msg_key'); var dataLength = responseBuffer.byteLength - deserializer.getOffset(); var encryptedData = deserializer.fetchRawBytes(dataLength, 'encrypted_data'); return this.getDecryptedMessage(msgKey, encryptedData).then(function (dataWithPadding) { var buffer = bytesToArrayBuffer(dataWithPadding); var deserializer = new TLDeserialization(buffer, {mtproto: true}); var salt = deserializer.fetchIntBytes(64, 'salt'); var sessionID = deserializer.fetchIntBytes(64, 'session_id'); var messageID = deserializer.fetchLong('message_id'); var seqNo = deserializer.fetchInt('seq_no'); var messageBody = deserializer.fetchRawBytes(false, 'message_data'); var offset = deserializer.getOffset(); return CryptoWorker.sha1Hash(dataWithPadding.slice(0, offset)).then(function (dataHashed) { if (!bytesCmp(msgKey, dataHashed.slice(-16))) { throw new Error('server msgKey mismatch'); } var buffer = bytesToArrayBuffer(messageBody); var deserializerOptions = { mtproto: true, override: { mt_message: function (result, field) { result.msg_id = this.fetchLong(field + '[msg_id]'); result.seqno = this.fetchInt(field + '[seqno]'); result.bytes = this.fetchInt(field + '[bytes]'); var offset = this.getOffset(); try { result.body = this.fetchObject('Object', field + '[body]'); } catch (e) { console.error(dT(), 'parse error', e.message, e.stack); result.body = {_: 'parse_error', error: e}; } if (this.offset != offset + result.bytes) { console.warn(dT(), 'set offset', this.offset, offset, result.bytes); console.log(dT(), result); this.offset = offset + result.bytes; } // console.log(dT(), 'override message', result); }, mt_rpc_result: function (result, field) { result.req_msg_id = this.fetchLong(field + '[req_msg_id]'); var sentMessage = self.sentMessages[result.req_msg_id], type = sentMessage && sentMessage.resultType || 'Object'; result.result = this.fetchObject(type, field + '[result]'); // console.log(dT(), 'override rpc_result', type, result); } } }; var deserializer = new TLDeserialization(buffer, deserializerOptions); var response = deserializer.fetchObject('', 'INPUT'); return { response: response, messageID: messageID, sessionID: sessionID, seqNo: seqNo }; }); }); }; MtpNetworker.prototype.applyServerSalt = function (newServerSalt) { var serverSalt = longToBytes(newServerSalt); var storeObj = {}; storeObj['dc' + this.dcID + '_server_salt'] = bytesToHex(serverSalt); Storage.set(storeObj); this.serverSalt = serverSalt; return true; }; MtpNetworker.prototype.sheduleRequest = function (delay) { if (this.offline) { this.checkConnection('forced shedule'); } var nextReq = tsNow() + delay; if (delay && this.nextReq && this.nextReq <= nextReq) { return false; } // console.log('shedule req', delay); // console.trace(); $timeout.cancel(this.nextReqPromise); this.nextReqPromise = $timeout(this.performSheduledRequest.bind(this), delay || 0); this.nextReq = nextReq; }; MtpNetworker.prototype.onSessionCreate = function (sessionID, messageID) { // console.log(dT(), 'New session created', bytesToHex(sessionID)); }; MtpNetworker.prototype.ackMessage = function (msgID) { // console.log('ack message', msgID); this.pendingAcks.push(msgID); this.sheduleRequest(30000); }; MtpNetworker.prototype.reqResendMessage = function (msgID) { console.log(dT(), 'Req resend', msgID); this.pendingResends.push(msgID); this.sheduleRequest(100); }; MtpNetworker.prototype.cleanupSent = function () { var self = this; var notEmpty = false; // console.log('clean start', this.dcID/*, this.sentMessages*/); angular.forEach(this.sentMessages, function(message, msgID) { // console.log('clean iter', msgID, message); if (message.notContentRelated && self.pendingMessages[msgID] === undefined) { // console.log('clean notContentRelated', msgID); delete self.sentMessages[msgID]; } else if (message.container) { for (var i = 0; i < message.inner.length; i++) { if (self.sentMessages[message.inner[i]] !== undefined) { // console.log('clean failed, found', msgID, message.inner[i], self.sentMessages[message.inner[i]].seq_no); notEmpty = true; return; } } // console.log('clean container', msgID); delete self.sentMessages[msgID]; } else { notEmpty = true; } }); return !notEmpty; }; MtpNetworker.prototype.processMessageAck = function (messageID) { var sentMessage = this.sentMessages[messageID]; if (sentMessage && !sentMessage.acked) { delete sentMessage.body; sentMessage.acked = true; return true; } return false; }; MtpNetworker.prototype.processError = function (rawError) { var matches = (rawError.error_message || '').match(/^([A-Z_0-9]+\b)(: (.+))?/) || []; rawError.error_code = uintToInt(rawError.error_code); return { code: !rawError.error_code || rawError.error_code <= 0 ? 500 : rawError.error_code, type: matches[1] || 'UNKNOWN', description: matches[3] || ('CODE#' + rawError.error_code + ' ' + rawError.error_message), originalError: rawError }; }; MtpNetworker.prototype.processMessage = function (message, messageID, sessionID) { // console.log('process message', message, messageID, sessionID); switch (message._) { case 'msg_container': var len = message.messages.length; for (var i = 0; i < len; i++) { this.processMessage(message.messages[i], messageID, sessionID); } break; case 'bad_server_salt': console.log(dT(), 'Bad server salt', message); var sentMessage = this.sentMessages[message.bad_msg_id]; if (!sentMessage || sentMessage.seq_no != message.bad_msg_seqno) { console.log(message.bad_msg_id, message.bad_msg_seqno); throw new Error('Bad server salt for invalid message'); } this.applyServerSalt(message.new_server_salt); this.pushResend(message.bad_msg_id); this.ackMessage(messageID); break; case 'bad_msg_notification': console.log(dT(), 'Bad msg notification', message); var sentMessage = this.sentMessages[message.bad_msg_id]; if (!sentMessage || sentMessage.seq_no != message.bad_msg_seqno) { console.log(message.bad_msg_id, message.bad_msg_seqno); throw new Error('Bad msg notification for invalid message'); } if (message.error_code == 16 || message.error_code == 17) { if (MtpTimeManager.applyServerTime( bigStringInt(messageID).shiftRight(32).toString(10) )) { console.log(dT(), 'Update session'); this.updateSession(); } var badMessage = this.updateSentMessage(message.bad_msg_id); this.pushResend(badMessage.msg_id); this.ackMessage(messageID); } break; case 'message': this.serverMessages.push(message.msg_id); this.processMessage(message.body, message.msg_id, sessionID); break; case 'new_session_created': this.ackMessage(messageID); this.processMessageAck(message.first_msg_id); this.applyServerSalt(message.server_salt); this.onSessionCreate(sessionID, messageID); break; case 'msgs_ack': for (var i = 0; i < message.msg_ids.length; i++) { this.processMessageAck(message.msg_ids[i]); } break; case 'msg_detailed_info': if (!this.sentMessages[message.msg_id]) { this.ackMessage(message.answer_msg_id); break; } case 'msg_new_detailed_info': // this.ackMessage(message.answer_msg_id); this.reqResendMessage(message.answer_msg_id); break; case 'msgs_state_info': this.ackMessage(message.answer_msg_id); if (this.lastResendReq && this.lastResendReq.req_msg_id == message.req_msg_id && this.pendingResends.length) { var i, badMsgID, pos; for (i = 0; i < this.lastResendReq.resend_msg_ids.length; i++) { badMsgID = this.lastResendReq.resend_msg_ids[i]; pos = this.pendingResends.indexOf(badMsgID); if (pos != -1) { this.pendingResends.splice(pos, 1); } } } break; case 'rpc_result': this.ackMessage(messageID); var sentMessageID = message.req_msg_id, sentMessage = this.sentMessages[sentMessageID]; this.processMessageAck(sentMessageID); if (sentMessage) { var deferred = sentMessage.deferred; if (message.result._ == 'rpc_error') { var error = this.processError(message.result); console.log(dT(), 'Rpc error', error) if (deferred) { deferred.reject(error) } } else { if (deferred) { if (Config.Modes.debug) { console.log(dT(), 'Rpc response', message.result); } else { var dRes = message.result._; if (!dRes) { if (message.result.length > 5) { dRes = '[..' + message.result.length + '..]'; } else { dRes = message.result; } } console.log(dT(), 'Rpc response', dRes); } sentMessage.deferred.resolve(message.result); } if (sentMessage.isAPI) { this.connectionInited = true; } } delete this.sentMessages[sentMessageID]; } break; default: this.ackMessage(messageID); // console.log('Update', message); if (updatesProcessor) { updatesProcessor(message); } break; } }; return { getNetworker: function (dcID, authKey, serverSalt, options) { return new MtpNetworker(dcID, authKey, serverSalt, options); }, setUpdatesProcessor: function (callback) { updatesProcessor = callback; } }; })