130 lines
4.1 KiB
JavaScript
130 lines
4.1 KiB
JavaScript
import EJSON from 'ejson';
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import { takeLatest, select, put } from 'redux-saga/effects';
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import { ENCRYPTION } from '../actions/actionsTypes';
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import { encryptionSetBanner } from '../actions/encryption';
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import { Encryption } from '../lib/encryption';
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import Navigation from '../lib/Navigation';
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import {
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E2E_PUBLIC_KEY,
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E2E_PRIVATE_KEY,
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E2E_BANNER_TYPE,
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E2E_RANDOM_PASSWORD_KEY
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} from '../lib/encryption/constants';
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import database from '../lib/database';
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import RocketChat from '../lib/rocketchat';
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import UserPreferences from '../lib/userPreferences';
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import { getUserSelector } from '../selectors/login';
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import { showErrorAlert } from '../utils/info';
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import I18n from '../i18n';
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import log from '../utils/log';
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const getServer = state => state.share.server || state.server.server;
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const getE2eEnable = state => state.settings.E2E_Enable;
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const handleEncryptionInit = function* handleEncryptionInit() {
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try {
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const server = yield select(getServer);
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const user = yield select(getUserSelector);
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const E2E_Enable = yield select(getE2eEnable);
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// Fetch server info to check E2E enable
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const serversDB = database.servers;
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const serversCollection = serversDB.collections.get('servers');
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let serverInfo;
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try {
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serverInfo = yield serversCollection.find(server);
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} catch {
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// Server not found
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}
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// If E2E is disabled on server, skip
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if (!serverInfo?.E2E_Enable && !E2E_Enable) {
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return;
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}
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// Fetch stored private e2e key for this server
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const storedPrivateKey = yield UserPreferences.getStringAsync(`${ server }-${ E2E_PRIVATE_KEY }`);
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// Fetch server stored e2e keys
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const keys = yield RocketChat.e2eFetchMyKeys();
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// A private key was received from the server, but it's not saved locally yet
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// Show the banner asking for the password
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if (!storedPrivateKey && keys?.privateKey) {
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yield put(encryptionSetBanner(E2E_BANNER_TYPE.REQUEST_PASSWORD));
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return;
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}
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// If the user has a private key stored, but never entered the password
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const storedRandomPassword = yield UserPreferences.getStringAsync(`${ server }-${ E2E_RANDOM_PASSWORD_KEY }`);
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if (storedRandomPassword) {
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yield put(encryptionSetBanner(E2E_BANNER_TYPE.SAVE_PASSWORD));
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}
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// Fetch stored public e2e key for this server
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let storedPublicKey = yield UserPreferences.getStringAsync(`${ server }-${ E2E_PUBLIC_KEY }`);
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// Prevent parse undefined
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if (storedPublicKey) {
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storedPublicKey = EJSON.parse(storedPublicKey);
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}
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if (storedPublicKey && storedPrivateKey) {
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// Persist these keys
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yield Encryption.persistKeys(server, storedPublicKey, storedPrivateKey);
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} else {
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// Create new keys since the user doesn't have any
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yield Encryption.createKeys(user.id, server);
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yield put(encryptionSetBanner(E2E_BANNER_TYPE.SAVE_PASSWORD));
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}
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// Decrypt all pending messages/subscriptions
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Encryption.initialize(user.id);
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} catch (e) {
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log(e);
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}
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};
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const handleEncryptionStop = function* handleEncryptionStop() {
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// Hide encryption banner
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yield put(encryptionSetBanner());
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// Stop Encryption client
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Encryption.stop();
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};
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const handleEncryptionDecodeKey = function* handleEncryptionDecodeKey({ password }) {
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try {
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const server = yield select(getServer);
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const user = yield select(getUserSelector);
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// Fetch server stored e2e keys
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const keys = yield RocketChat.e2eFetchMyKeys();
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const publicKey = EJSON.parse(keys?.publicKey);
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// Decode the current server key
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const privateKey = yield Encryption.decodePrivateKey(keys?.privateKey, password, user.id);
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// Persist these decrypted keys
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yield Encryption.persistKeys(server, publicKey, privateKey);
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// Decrypt all pending messages/subscriptions
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Encryption.initialize(user.id);
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// Hide encryption banner
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yield put(encryptionSetBanner());
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Navigation.back();
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} catch {
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// Can't decrypt user private key
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showErrorAlert(I18n.t('Encryption_error_desc'), I18n.t('Encryption_error_title'));
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}
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};
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const root = function* root() {
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yield takeLatest(ENCRYPTION.INIT, handleEncryptionInit);
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yield takeLatest(ENCRYPTION.STOP, handleEncryptionStop);
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yield takeLatest(ENCRYPTION.DECODE_KEY, handleEncryptionDecodeKey);
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};
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export default root;
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