580 lines
20 KiB
JavaScript
580 lines
20 KiB
JavaScript
/* global
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window,
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textsecure,
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libsignal,
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WebSocketResource,
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btoa,
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Signal,
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getString,
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libphonenumber,
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Event,
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ConversationController
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*/
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/* eslint-disable more/no-then */
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// eslint-disable-next-line func-names
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(function() {
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window.textsecure = window.textsecure || {};
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const ARCHIVE_AGE = 7 * 24 * 60 * 60 * 1000;
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function AccountManager(username, password) {
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this.server = window.WebAPI.connect({ username, password });
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this.pending = Promise.resolve();
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}
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function getNumber(numberId) {
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if (!numberId || !numberId.length) {
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return numberId;
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}
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const parts = numberId.split('.');
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if (!parts.length) {
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return numberId;
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}
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return parts[0];
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}
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AccountManager.prototype = new textsecure.EventTarget();
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AccountManager.prototype.extend({
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constructor: AccountManager,
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requestVoiceVerification(number) {
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return this.server.requestVerificationVoice(number);
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},
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requestSMSVerification(number) {
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return this.server.requestVerificationSMS(number);
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},
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async encryptDeviceName(name, providedIdentityKey) {
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const identityKey =
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providedIdentityKey ||
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(await textsecure.storage.protocol.getIdentityKeyPair());
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if (!identityKey) {
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throw new Error(
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'Identity key was not provided and is not in database!'
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);
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}
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const encrypted = await Signal.Crypto.encryptDeviceName(
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name,
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identityKey.pubKey
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);
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const proto = new textsecure.protobuf.DeviceName();
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proto.ephemeralPublic = encrypted.ephemeralPublic;
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proto.syntheticIv = encrypted.syntheticIv;
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proto.ciphertext = encrypted.ciphertext;
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const arrayBuffer = proto.encode().toArrayBuffer();
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return Signal.Crypto.arrayBufferToBase64(arrayBuffer);
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},
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async decryptDeviceName(base64) {
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const identityKey = await textsecure.storage.protocol.getIdentityKeyPair();
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const arrayBuffer = Signal.Crypto.base64ToArrayBuffer(base64);
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const proto = textsecure.protobuf.DeviceName.decode(arrayBuffer);
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const encrypted = {
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ephemeralPublic: proto.ephemeralPublic.toArrayBuffer(),
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syntheticIv: proto.syntheticIv.toArrayBuffer(),
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ciphertext: proto.ciphertext.toArrayBuffer(),
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};
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const name = await Signal.Crypto.decryptDeviceName(
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encrypted,
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identityKey.privKey
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);
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return name;
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},
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async maybeUpdateDeviceName() {
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const isNameEncrypted = textsecure.storage.user.getDeviceNameEncrypted();
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if (isNameEncrypted) {
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return;
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}
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const deviceName = await textsecure.storage.user.getDeviceName();
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const base64 = await this.encryptDeviceName(deviceName);
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await this.server.updateDeviceName(base64);
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},
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async deviceNameIsEncrypted() {
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await textsecure.storage.user.setDeviceNameEncrypted();
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},
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registerSingleDevice(number, verificationCode) {
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const registerKeys = this.server.registerKeys.bind(this.server);
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const createAccount = this.createAccount.bind(this);
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const clearSessionsAndPreKeys = this.clearSessionsAndPreKeys.bind(this);
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const generateKeys = this.generateKeys.bind(this, 100);
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const confirmKeys = this.confirmKeys.bind(this);
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const registrationDone = this.registrationDone.bind(this);
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return this.queueTask(() =>
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libsignal.KeyHelper.generateIdentityKeyPair().then(
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async identityKeyPair => {
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const profileKey = textsecure.crypto.getRandomBytes(32);
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const accessKey = await window.Signal.Crypto.deriveAccessKey(
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profileKey
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);
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return createAccount(
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number,
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verificationCode,
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identityKeyPair,
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profileKey,
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null,
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null,
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null,
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{ accessKey }
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)
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.then(clearSessionsAndPreKeys)
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.then(generateKeys)
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.then(keys => registerKeys(keys).then(() => confirmKeys(keys)))
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.then(() => registrationDone(number));
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}
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)
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);
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},
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registerSecondDevice(setProvisioningUrl, confirmNumber, progressCallback) {
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const createAccount = this.createAccount.bind(this);
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const clearSessionsAndPreKeys = this.clearSessionsAndPreKeys.bind(this);
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const generateKeys = this.generateKeys.bind(this, 100, progressCallback);
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const confirmKeys = this.confirmKeys.bind(this);
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const registrationDone = this.registrationDone.bind(this);
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const registerKeys = this.server.registerKeys.bind(this.server);
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const getSocket = this.server.getProvisioningSocket.bind(this.server);
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const queueTask = this.queueTask.bind(this);
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const provisioningCipher = new libsignal.ProvisioningCipher();
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let gotProvisionEnvelope = false;
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return provisioningCipher.getPublicKey().then(
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pubKey =>
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new Promise((resolve, reject) => {
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const socket = getSocket();
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socket.onclose = event => {
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window.log.info('provisioning socket closed. Code:', event.code);
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if (!gotProvisionEnvelope) {
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reject(new Error('websocket closed'));
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}
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};
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socket.onopen = () => {
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window.log.info('provisioning socket open');
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};
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const wsr = new WebSocketResource(socket, {
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keepalive: { path: '/v1/keepalive/provisioning' },
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handleRequest(request) {
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if (request.path === '/v1/address' && request.verb === 'PUT') {
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const proto = textsecure.protobuf.ProvisioningUuid.decode(
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request.body
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);
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setProvisioningUrl(
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[
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'tsdevice:/?uuid=',
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proto.uuid,
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'&pub_key=',
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encodeURIComponent(btoa(getString(pubKey))),
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].join('')
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);
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request.respond(200, 'OK');
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} else if (
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request.path === '/v1/message' &&
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request.verb === 'PUT'
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) {
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const envelope = textsecure.protobuf.ProvisionEnvelope.decode(
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request.body,
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'binary'
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);
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request.respond(200, 'OK');
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gotProvisionEnvelope = true;
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wsr.close();
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resolve(
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provisioningCipher
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.decrypt(envelope)
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.then(provisionMessage =>
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queueTask(() =>
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confirmNumber(provisionMessage.number).then(
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deviceName => {
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if (
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typeof deviceName !== 'string' ||
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deviceName.length === 0
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) {
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throw new Error('Invalid device name');
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}
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return createAccount(
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provisionMessage.number,
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provisionMessage.provisioningCode,
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provisionMessage.identityKeyPair,
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provisionMessage.profileKey,
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deviceName,
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provisionMessage.userAgent,
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provisionMessage.readReceipts
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)
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.then(clearSessionsAndPreKeys)
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.then(generateKeys)
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.then(keys =>
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registerKeys(keys).then(() =>
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confirmKeys(keys)
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)
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)
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.then(() =>
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registrationDone(provisionMessage.number)
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);
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}
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)
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)
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)
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);
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} else {
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window.log.error('Unknown websocket message', request.path);
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}
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},
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});
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})
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);
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},
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refreshPreKeys() {
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const generateKeys = this.generateKeys.bind(this, 100);
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const registerKeys = this.server.registerKeys.bind(this.server);
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return this.queueTask(() =>
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this.server.getMyKeys().then(preKeyCount => {
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window.log.info(`prekey count ${preKeyCount}`);
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if (preKeyCount < 10) {
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return generateKeys().then(registerKeys);
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}
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return null;
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})
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);
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},
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rotateSignedPreKey() {
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return this.queueTask(() => {
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const signedKeyId = textsecure.storage.get('signedKeyId', 1);
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if (typeof signedKeyId !== 'number') {
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throw new Error('Invalid signedKeyId');
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}
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const store = textsecure.storage.protocol;
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const { server, cleanSignedPreKeys } = this;
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return store
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.getIdentityKeyPair()
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.then(
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identityKey =>
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libsignal.KeyHelper.generateSignedPreKey(
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identityKey,
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signedKeyId
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),
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() => {
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// We swallow any error here, because we don't want to get into
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// a loop of repeated retries.
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window.log.error(
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'Failed to get identity key. Canceling key rotation.'
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);
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}
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)
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.then(res => {
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if (!res) {
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return null;
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}
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window.log.info('Saving new signed prekey', res.keyId);
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return Promise.all([
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textsecure.storage.put('signedKeyId', signedKeyId + 1),
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store.storeSignedPreKey(res.keyId, res.keyPair),
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server.setSignedPreKey({
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keyId: res.keyId,
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publicKey: res.keyPair.pubKey,
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signature: res.signature,
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}),
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])
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.then(() => {
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const confirmed = true;
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window.log.info('Confirming new signed prekey', res.keyId);
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return Promise.all([
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textsecure.storage.remove('signedKeyRotationRejected'),
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store.storeSignedPreKey(res.keyId, res.keyPair, confirmed),
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]);
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})
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.then(() => cleanSignedPreKeys());
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})
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.catch(e => {
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window.log.error(
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'rotateSignedPrekey error:',
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e && e.stack ? e.stack : e
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);
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if (
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e instanceof Error &&
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e.name === 'HTTPError' &&
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e.code >= 400 &&
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e.code <= 599
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) {
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const rejections =
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1 + textsecure.storage.get('signedKeyRotationRejected', 0);
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textsecure.storage.put('signedKeyRotationRejected', rejections);
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window.log.error(
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'Signed key rotation rejected count:',
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rejections
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);
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} else {
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throw e;
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}
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});
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});
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},
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queueTask(task) {
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const taskWithTimeout = textsecure.createTaskWithTimeout(task);
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this.pending = this.pending.then(taskWithTimeout, taskWithTimeout);
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return this.pending;
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},
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cleanSignedPreKeys() {
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const MINIMUM_KEYS = 3;
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const store = textsecure.storage.protocol;
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return store.loadSignedPreKeys().then(allKeys => {
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allKeys.sort((a, b) => (a.created_at || 0) - (b.created_at || 0));
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allKeys.reverse(); // we want the most recent first
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let confirmed = allKeys.filter(key => key.confirmed);
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const unconfirmed = allKeys.filter(key => !key.confirmed);
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const recent = allKeys[0] ? allKeys[0].keyId : 'none';
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const recentConfirmed = confirmed[0] ? confirmed[0].keyId : 'none';
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window.log.info(`Most recent signed key: ${recent}`);
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window.log.info(`Most recent confirmed signed key: ${recentConfirmed}`);
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window.log.info(
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'Total signed key count:',
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allKeys.length,
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'-',
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confirmed.length,
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'confirmed'
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);
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let confirmedCount = confirmed.length;
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// Keep MINIMUM_KEYS confirmed keys, then drop if older than a week
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confirmed = confirmed.forEach((key, index) => {
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if (index < MINIMUM_KEYS) {
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return;
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}
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const createdAt = key.created_at || 0;
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const age = Date.now() - createdAt;
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if (age > ARCHIVE_AGE) {
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window.log.info(
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'Removing confirmed signed prekey:',
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key.keyId,
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'with timestamp:',
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createdAt
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);
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store.removeSignedPreKey(key.keyId);
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confirmedCount -= 1;
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}
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});
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const stillNeeded = MINIMUM_KEYS - confirmedCount;
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// If we still don't have enough total keys, we keep as many unconfirmed
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// keys as necessary. If not necessary, and over a week old, we drop.
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unconfirmed.forEach((key, index) => {
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if (index < stillNeeded) {
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return;
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}
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const createdAt = key.created_at || 0;
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const age = Date.now() - createdAt;
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if (age > ARCHIVE_AGE) {
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window.log.info(
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'Removing unconfirmed signed prekey:',
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key.keyId,
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'with timestamp:',
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createdAt
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);
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store.removeSignedPreKey(key.keyId);
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}
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});
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});
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},
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async createAccount(
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number,
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verificationCode,
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identityKeyPair,
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profileKey,
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deviceName,
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userAgent,
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readReceipts,
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options = {}
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) {
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const { accessKey } = options;
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const signalingKey = libsignal.crypto.getRandomBytes(32 + 20);
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let password = btoa(getString(libsignal.crypto.getRandomBytes(16)));
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password = password.substring(0, password.length - 2);
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const registrationId = libsignal.KeyHelper.generateRegistrationId();
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const previousNumber = getNumber(textsecure.storage.get('number_id'));
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const encryptedDeviceName = await this.encryptDeviceName(
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deviceName,
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identityKeyPair
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);
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await this.deviceNameIsEncrypted();
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const response = await this.server.confirmCode(
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number,
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verificationCode,
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password,
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signalingKey,
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registrationId,
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encryptedDeviceName,
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{ accessKey }
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);
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if (previousNumber && previousNumber !== number) {
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window.log.warn(
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'New number is different from old number; deleting all previous data'
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);
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try {
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await textsecure.storage.protocol.removeAllData();
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window.log.info('Successfully deleted previous data');
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} catch (error) {
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window.log.error(
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'Something went wrong deleting data from previous number',
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error && error.stack ? error.stack : error
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);
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}
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}
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await Promise.all([
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textsecure.storage.remove('identityKey'),
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textsecure.storage.remove('signaling_key'),
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textsecure.storage.remove('password'),
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textsecure.storage.remove('registrationId'),
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textsecure.storage.remove('number_id'),
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textsecure.storage.remove('device_name'),
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textsecure.storage.remove('regionCode'),
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textsecure.storage.remove('userAgent'),
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textsecure.storage.remove('profileKey'),
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textsecure.storage.remove('read-receipts-setting'),
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]);
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// update our own identity key, which may have changed
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// if we're relinking after a reinstall on the master device
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await textsecure.storage.protocol.saveIdentityWithAttributes(number, {
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id: number,
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publicKey: identityKeyPair.pubKey,
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firstUse: true,
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timestamp: Date.now(),
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verified: textsecure.storage.protocol.VerifiedStatus.VERIFIED,
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nonblockingApproval: true,
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});
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await textsecure.storage.put('identityKey', identityKeyPair);
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await textsecure.storage.put('signaling_key', signalingKey);
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await textsecure.storage.put('password', password);
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await textsecure.storage.put('registrationId', registrationId);
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if (profileKey) {
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await textsecure.storage.put('profileKey', profileKey);
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}
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if (userAgent) {
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await textsecure.storage.put('userAgent', userAgent);
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}
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await textsecure.storage.put(
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'read-receipt-setting',
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Boolean(readReceipts)
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);
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await textsecure.storage.user.setNumberAndDeviceId(
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number,
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response.deviceId || 1,
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deviceName
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);
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await textsecure.storage.put(
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'regionCode',
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libphonenumber.util.getRegionCodeForNumber(number)
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);
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},
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async clearSessionsAndPreKeys() {
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const store = textsecure.storage.protocol;
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window.log.info('clearing all sessions, prekeys, and signed prekeys');
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await Promise.all([
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store.clearPreKeyStore(),
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store.clearSignedPreKeysStore(),
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store.clearSessionStore(),
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]);
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},
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// Takes the same object returned by generateKeys
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async confirmKeys(keys) {
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const store = textsecure.storage.protocol;
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const key = keys.signedPreKey;
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const confirmed = true;
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window.log.info('confirmKeys: confirming key', key.keyId);
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await store.storeSignedPreKey(key.keyId, key.keyPair, confirmed);
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},
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generateKeys(count, providedProgressCallback) {
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const progressCallback =
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typeof providedProgressCallback === 'function'
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? providedProgressCallback
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: null;
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const startId = textsecure.storage.get('maxPreKeyId', 1);
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const signedKeyId = textsecure.storage.get('signedKeyId', 1);
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if (typeof startId !== 'number') {
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throw new Error('Invalid maxPreKeyId');
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}
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if (typeof signedKeyId !== 'number') {
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throw new Error('Invalid signedKeyId');
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}
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const store = textsecure.storage.protocol;
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return store.getIdentityKeyPair().then(identityKey => {
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const result = { preKeys: [], identityKey: identityKey.pubKey };
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const promises = [];
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for (let keyId = startId; keyId < startId + count; keyId += 1) {
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promises.push(
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libsignal.KeyHelper.generatePreKey(keyId).then(res => {
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store.storePreKey(res.keyId, res.keyPair);
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result.preKeys.push({
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keyId: res.keyId,
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publicKey: res.keyPair.pubKey,
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});
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if (progressCallback) {
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progressCallback();
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}
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})
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);
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}
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promises.push(
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libsignal.KeyHelper.generateSignedPreKey(
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identityKey,
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signedKeyId
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).then(res => {
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store.storeSignedPreKey(res.keyId, res.keyPair);
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result.signedPreKey = {
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keyId: res.keyId,
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publicKey: res.keyPair.pubKey,
|
|
signature: res.signature,
|
|
// server.registerKeys doesn't use keyPair, confirmKeys does
|
|
keyPair: res.keyPair,
|
|
};
|
|
})
|
|
);
|
|
|
|
textsecure.storage.put('maxPreKeyId', startId + count);
|
|
textsecure.storage.put('signedKeyId', signedKeyId + 1);
|
|
return Promise.all(promises).then(() =>
|
|
// This is primarily for the signed prekey summary it logs out
|
|
this.cleanSignedPreKeys().then(() => result)
|
|
);
|
|
});
|
|
},
|
|
async registrationDone(number) {
|
|
window.log.info('registration done');
|
|
|
|
// Ensure that we always have a conversation for ourself
|
|
await ConversationController.getOrCreateAndWait(number, 'private');
|
|
|
|
this.dispatchEvent(new Event('registration'));
|
|
},
|
|
});
|
|
textsecure.AccountManager = AccountManager;
|
|
})();
|