a29cabe45a
* Report verification and recovery state to posthog * Fix CryptoApi import * Fix js-sdk import * Review: Use DeviceVerificationStatus instead of CrossSigningStatus * Review: Clean condition to check secrets in 4S * review: Fix redundent !!
529 lines
22 KiB
TypeScript
529 lines
22 KiB
TypeScript
/*
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {
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MatrixEvent,
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ClientEvent,
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EventType,
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MatrixClient,
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RoomStateEvent,
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SyncState,
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ClientStoppedError,
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} from "matrix-js-sdk/src/matrix";
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import { logger } from "matrix-js-sdk/src/logger";
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import { CryptoEvent } from "matrix-js-sdk/src/crypto";
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import { KeyBackupInfo } from "matrix-js-sdk/src/crypto-api";
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import { CryptoSessionStateChange } from "@matrix-org/analytics-events/types/typescript/CryptoSessionStateChange";
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import { PosthogAnalytics } from "./PosthogAnalytics";
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import dis from "./dispatcher/dispatcher";
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import {
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hideToast as hideBulkUnverifiedSessionsToast,
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showToast as showBulkUnverifiedSessionsToast,
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} from "./toasts/BulkUnverifiedSessionsToast";
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import {
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hideToast as hideSetupEncryptionToast,
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Kind as SetupKind,
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showToast as showSetupEncryptionToast,
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} from "./toasts/SetupEncryptionToast";
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import {
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hideToast as hideUnverifiedSessionsToast,
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showToast as showUnverifiedSessionsToast,
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} from "./toasts/UnverifiedSessionToast";
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import { accessSecretStorage, isSecretStorageBeingAccessed } from "./SecurityManager";
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import { isSecureBackupRequired } from "./utils/WellKnownUtils";
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import { ActionPayload } from "./dispatcher/payloads";
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import { Action } from "./dispatcher/actions";
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import { isLoggedIn } from "./utils/login";
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import SdkConfig from "./SdkConfig";
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import PlatformPeg from "./PlatformPeg";
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import { recordClientInformation, removeClientInformation } from "./utils/device/clientInformation";
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import SettingsStore, { CallbackFn } from "./settings/SettingsStore";
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import { UIFeature } from "./settings/UIFeature";
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import { isBulkUnverifiedDeviceReminderSnoozed } from "./utils/device/snoozeBulkUnverifiedDeviceReminder";
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import { getUserDeviceIds } from "./utils/crypto/deviceInfo";
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const KEY_BACKUP_POLL_INTERVAL = 5 * 60 * 1000;
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export default class DeviceListener {
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private dispatcherRef?: string;
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// device IDs for which the user has dismissed the verify toast ('Later')
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private dismissed = new Set<string>();
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// has the user dismissed any of the various nag toasts to setup encryption on this device?
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private dismissedThisDeviceToast = false;
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/** Cache of the info about the current key backup on the server. */
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private keyBackupInfo: KeyBackupInfo | null = null;
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/** When `keyBackupInfo` was last updated */
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private keyBackupFetchedAt: number | null = null;
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// We keep a list of our own device IDs so we can batch ones that were already
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// there the last time the app launched into a single toast, but display new
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// ones in their own toasts.
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private ourDeviceIdsAtStart: Set<string> | null = null;
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// The set of device IDs we're currently displaying toasts for
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private displayingToastsForDeviceIds = new Set<string>();
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private running = false;
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// The client with which the instance is running. Only set if `running` is true, otherwise undefined.
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private client?: MatrixClient;
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private shouldRecordClientInformation = false;
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private enableBulkUnverifiedSessionsReminder = true;
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private deviceClientInformationSettingWatcherRef: string | undefined;
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// Remember the current analytics state to avoid sending the same event multiple times.
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private analyticsVerificationState?: string;
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private analyticsRecoveryState?: string;
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public static sharedInstance(): DeviceListener {
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if (!window.mxDeviceListener) window.mxDeviceListener = new DeviceListener();
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return window.mxDeviceListener;
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}
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public start(matrixClient: MatrixClient): void {
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this.running = true;
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this.client = matrixClient;
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this.client.on(CryptoEvent.WillUpdateDevices, this.onWillUpdateDevices);
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this.client.on(CryptoEvent.DevicesUpdated, this.onDevicesUpdated);
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this.client.on(CryptoEvent.DeviceVerificationChanged, this.onDeviceVerificationChanged);
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this.client.on(CryptoEvent.UserTrustStatusChanged, this.onUserTrustStatusChanged);
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this.client.on(CryptoEvent.KeysChanged, this.onCrossSingingKeysChanged);
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this.client.on(ClientEvent.AccountData, this.onAccountData);
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this.client.on(ClientEvent.Sync, this.onSync);
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this.client.on(RoomStateEvent.Events, this.onRoomStateEvents);
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this.shouldRecordClientInformation = SettingsStore.getValue("deviceClientInformationOptIn");
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// only configurable in config, so we don't need to watch the value
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this.enableBulkUnverifiedSessionsReminder = SettingsStore.getValue(UIFeature.BulkUnverifiedSessionsReminder);
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this.deviceClientInformationSettingWatcherRef = SettingsStore.watchSetting(
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"deviceClientInformationOptIn",
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null,
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this.onRecordClientInformationSettingChange,
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);
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this.dispatcherRef = dis.register(this.onAction);
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this.recheck();
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this.updateClientInformation();
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}
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public stop(): void {
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this.running = false;
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if (this.client) {
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this.client.removeListener(CryptoEvent.WillUpdateDevices, this.onWillUpdateDevices);
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this.client.removeListener(CryptoEvent.DevicesUpdated, this.onDevicesUpdated);
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this.client.removeListener(CryptoEvent.DeviceVerificationChanged, this.onDeviceVerificationChanged);
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this.client.removeListener(CryptoEvent.UserTrustStatusChanged, this.onUserTrustStatusChanged);
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this.client.removeListener(CryptoEvent.KeysChanged, this.onCrossSingingKeysChanged);
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this.client.removeListener(ClientEvent.AccountData, this.onAccountData);
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this.client.removeListener(ClientEvent.Sync, this.onSync);
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this.client.removeListener(RoomStateEvent.Events, this.onRoomStateEvents);
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}
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if (this.deviceClientInformationSettingWatcherRef) {
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SettingsStore.unwatchSetting(this.deviceClientInformationSettingWatcherRef);
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}
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if (this.dispatcherRef) {
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dis.unregister(this.dispatcherRef);
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this.dispatcherRef = undefined;
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}
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this.dismissed.clear();
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this.dismissedThisDeviceToast = false;
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this.keyBackupInfo = null;
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this.keyBackupFetchedAt = null;
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this.keyBackupStatusChecked = false;
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this.ourDeviceIdsAtStart = null;
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this.displayingToastsForDeviceIds = new Set();
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this.client = undefined;
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}
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/**
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* Dismiss notifications about our own unverified devices
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*
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* @param {String[]} deviceIds List of device IDs to dismiss notifications for
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*/
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public async dismissUnverifiedSessions(deviceIds: Iterable<string>): Promise<void> {
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logger.log("Dismissing unverified sessions: " + Array.from(deviceIds).join(","));
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for (const d of deviceIds) {
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this.dismissed.add(d);
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}
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this.recheck();
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}
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public dismissEncryptionSetup(): void {
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this.dismissedThisDeviceToast = true;
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this.recheck();
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}
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private async ensureDeviceIdsAtStartPopulated(): Promise<void> {
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if (this.ourDeviceIdsAtStart === null) {
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this.ourDeviceIdsAtStart = await this.getDeviceIds();
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}
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}
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/** Get the device list for the current user
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*
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* @returns the set of device IDs
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*/
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private async getDeviceIds(): Promise<Set<string>> {
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const cli = this.client;
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if (!cli) return new Set();
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return await getUserDeviceIds(cli, cli.getSafeUserId());
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}
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private onWillUpdateDevices = async (users: string[], initialFetch?: boolean): Promise<void> => {
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if (!this.client) return;
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// If we didn't know about *any* devices before (ie. it's fresh login),
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// then they are all pre-existing devices, so ignore this and set the
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// devicesAtStart list to the devices that we see after the fetch.
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if (initialFetch) return;
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const myUserId = this.client.getSafeUserId();
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if (users.includes(myUserId)) await this.ensureDeviceIdsAtStartPopulated();
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// No need to do a recheck here: we just need to get a snapshot of our devices
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// before we download any new ones.
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};
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private onDevicesUpdated = (users: string[]): void => {
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if (!this.client) return;
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if (!users.includes(this.client.getSafeUserId())) return;
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this.recheck();
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};
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private onDeviceVerificationChanged = (userId: string): void => {
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if (!this.client) return;
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if (userId !== this.client.getUserId()) return;
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this.recheck();
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};
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private onUserTrustStatusChanged = (userId: string): void => {
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if (!this.client) return;
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if (userId !== this.client.getUserId()) return;
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this.recheck();
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};
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private onCrossSingingKeysChanged = (): void => {
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this.recheck();
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};
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private onAccountData = (ev: MatrixEvent): void => {
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// User may have:
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// * migrated SSSS to symmetric
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// * uploaded keys to secret storage
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// * completed secret storage creation
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// which result in account data changes affecting checks below.
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if (
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ev.getType().startsWith("m.secret_storage.") ||
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ev.getType().startsWith("m.cross_signing.") ||
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ev.getType() === "m.megolm_backup.v1"
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) {
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this.recheck();
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}
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};
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private onSync = (state: SyncState, prevState: SyncState | null): void => {
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if (state === "PREPARED" && prevState === null) {
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this.recheck();
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}
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};
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private onRoomStateEvents = (ev: MatrixEvent): void => {
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if (ev.getType() !== EventType.RoomEncryption) return;
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// If a room changes to encrypted, re-check as it may be our first
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// encrypted room. This also catches encrypted room creation as well.
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this.recheck();
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};
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private onAction = ({ action }: ActionPayload): void => {
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if (action !== Action.OnLoggedIn) return;
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this.recheck();
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this.updateClientInformation();
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};
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/**
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* Fetch the key backup information from the server.
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*
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* The result is cached for `KEY_BACKUP_POLL_INTERVAL` ms to avoid repeated API calls.
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*
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* @returns The key backup info from the server, or `null` if there is no key backup.
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*/
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private async getKeyBackupInfo(): Promise<KeyBackupInfo | null> {
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if (!this.client) return null;
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const now = new Date().getTime();
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if (
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!this.keyBackupInfo ||
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!this.keyBackupFetchedAt ||
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this.keyBackupFetchedAt < now - KEY_BACKUP_POLL_INTERVAL
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) {
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this.keyBackupInfo = await this.client.getKeyBackupVersion();
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this.keyBackupFetchedAt = now;
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}
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return this.keyBackupInfo;
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}
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private shouldShowSetupEncryptionToast(): boolean {
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// If we're in the middle of a secret storage operation, we're likely
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// modifying the state involved here, so don't add new toasts to setup.
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if (isSecretStorageBeingAccessed()) return false;
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// Show setup toasts once the user is in at least one encrypted room.
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const cli = this.client;
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return cli?.getRooms().some((r) => cli.isRoomEncrypted(r.roomId)) ?? false;
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}
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private recheck(): void {
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this.doRecheck().catch((e) => {
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if (e instanceof ClientStoppedError) {
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// the client was stopped while recheck() was running. Nothing left to do.
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} else {
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logger.error("Error during `DeviceListener.recheck`", e);
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}
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});
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}
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private async doRecheck(): Promise<void> {
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if (!this.running || !this.client) return; // we have been stopped
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const cli = this.client;
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// cross-signing support was added to Matrix in MSC1756, which landed in spec v1.1
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if (!(await cli.isVersionSupported("v1.1"))) return;
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const crypto = cli.getCrypto();
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if (!crypto) return;
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// don't recheck until the initial sync is complete: lots of account data events will fire
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// while the initial sync is processing and we don't need to recheck on each one of them
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// (we add a listener on sync to do once check after the initial sync is done)
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if (!cli.isInitialSyncComplete()) return;
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const crossSigningReady = await crypto.isCrossSigningReady();
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const secretStorageReady = await crypto.isSecretStorageReady();
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const allSystemsReady = crossSigningReady && secretStorageReady;
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await this.reportCryptoSessionStateToAnalytics(cli);
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if (this.dismissedThisDeviceToast || allSystemsReady) {
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hideSetupEncryptionToast();
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this.checkKeyBackupStatus();
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} else if (this.shouldShowSetupEncryptionToast()) {
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// make sure our keys are finished downloading
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await crypto.getUserDeviceInfo([cli.getSafeUserId()]);
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// cross signing isn't enabled - nag to enable it
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// There are 3 different toasts for:
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if (!(await crypto.getCrossSigningKeyId()) && (await crypto.userHasCrossSigningKeys())) {
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// Cross-signing on account but this device doesn't trust the master key (verify this session)
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showSetupEncryptionToast(SetupKind.VERIFY_THIS_SESSION);
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this.checkKeyBackupStatus();
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} else {
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const backupInfo = await this.getKeyBackupInfo();
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if (backupInfo) {
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// No cross-signing on account but key backup available (upgrade encryption)
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showSetupEncryptionToast(SetupKind.UPGRADE_ENCRYPTION);
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} else {
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// No cross-signing or key backup on account (set up encryption)
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await cli.waitForClientWellKnown();
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if (isSecureBackupRequired(cli) && isLoggedIn()) {
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// If we're meant to set up, and Secure Backup is required,
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// trigger the flow directly without a toast once logged in.
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hideSetupEncryptionToast();
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accessSecretStorage();
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} else {
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showSetupEncryptionToast(SetupKind.SET_UP_ENCRYPTION);
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}
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}
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}
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}
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// This needs to be done after awaiting on getUserDeviceInfo() above, so
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// we make sure we get the devices after the fetch is done.
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await this.ensureDeviceIdsAtStartPopulated();
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// Unverified devices that were there last time the app ran
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// (technically could just be a boolean: we don't actually
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// need to remember the device IDs, but for the sake of
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// symmetry...).
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const oldUnverifiedDeviceIds = new Set<string>();
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// Unverified devices that have appeared since then
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const newUnverifiedDeviceIds = new Set<string>();
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const isCurrentDeviceTrusted =
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crossSigningReady &&
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Boolean(
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(await crypto.getDeviceVerificationStatus(cli.getSafeUserId(), cli.deviceId!))?.crossSigningVerified,
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);
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// as long as cross-signing isn't ready,
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// you can't see or dismiss any device toasts
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if (crossSigningReady) {
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const devices = await this.getDeviceIds();
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for (const deviceId of devices) {
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if (deviceId === cli.deviceId) continue;
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const deviceTrust = await crypto.getDeviceVerificationStatus(cli.getSafeUserId(), deviceId);
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if (!deviceTrust?.crossSigningVerified && !this.dismissed.has(deviceId)) {
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if (this.ourDeviceIdsAtStart?.has(deviceId)) {
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oldUnverifiedDeviceIds.add(deviceId);
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} else {
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newUnverifiedDeviceIds.add(deviceId);
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}
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}
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}
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}
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logger.debug("Old unverified sessions: " + Array.from(oldUnverifiedDeviceIds).join(","));
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logger.debug("New unverified sessions: " + Array.from(newUnverifiedDeviceIds).join(","));
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logger.debug("Currently showing toasts for: " + Array.from(this.displayingToastsForDeviceIds).join(","));
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const isBulkUnverifiedSessionsReminderSnoozed = isBulkUnverifiedDeviceReminderSnoozed();
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// Display or hide the batch toast for old unverified sessions
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// don't show the toast if the current device is unverified
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if (
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oldUnverifiedDeviceIds.size > 0 &&
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isCurrentDeviceTrusted &&
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this.enableBulkUnverifiedSessionsReminder &&
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!isBulkUnverifiedSessionsReminderSnoozed
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) {
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showBulkUnverifiedSessionsToast(oldUnverifiedDeviceIds);
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} else {
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hideBulkUnverifiedSessionsToast();
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}
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// Show toasts for new unverified devices if they aren't already there
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for (const deviceId of newUnverifiedDeviceIds) {
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showUnverifiedSessionsToast(deviceId);
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}
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// ...and hide any we don't need any more
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for (const deviceId of this.displayingToastsForDeviceIds) {
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if (!newUnverifiedDeviceIds.has(deviceId)) {
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logger.debug("Hiding unverified session toast for " + deviceId);
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hideUnverifiedSessionsToast(deviceId);
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}
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}
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this.displayingToastsForDeviceIds = newUnverifiedDeviceIds;
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}
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/**
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* Reports current recovery state to analytics.
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* Checks if the session is verified and if the recovery is correctly set up (i.e all secrets known locally and in 4S).
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* @param cli - the matrix client
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* @private
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*/
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private async reportCryptoSessionStateToAnalytics(cli: MatrixClient): Promise<void> {
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const crypto = cli.getCrypto()!;
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const secretStorageReady = await crypto.isSecretStorageReady();
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const crossSigningStatus = await crypto.getCrossSigningStatus();
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const backupInfo = await this.getKeyBackupInfo();
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const is4SEnabled = (await cli.secretStorage.getDefaultKeyId()) != null;
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const deviceVerificationStatus = await crypto.getDeviceVerificationStatus(cli.getUserId()!, cli.getDeviceId()!);
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const verificationState =
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deviceVerificationStatus?.signedByOwner && deviceVerificationStatus?.crossSigningVerified
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? "Verified"
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: "NotVerified";
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let recoveryState: "Disabled" | "Enabled" | "Incomplete";
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if (!is4SEnabled) {
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recoveryState = "Disabled";
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} else {
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const allCrossSigningSecretsCached =
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crossSigningStatus.privateKeysCachedLocally.masterKey &&
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crossSigningStatus.privateKeysCachedLocally.selfSigningKey &&
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crossSigningStatus.privateKeysCachedLocally.userSigningKey;
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if (backupInfo != null) {
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// There is a backup. Check that all secrets are stored in 4S and known locally.
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// If they are not, recovery is incomplete.
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const backupPrivateKeyIsInCache = (await crypto.getSessionBackupPrivateKey()) != null;
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if (secretStorageReady && allCrossSigningSecretsCached && backupPrivateKeyIsInCache) {
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recoveryState = "Enabled";
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} else {
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recoveryState = "Incomplete";
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}
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} else {
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// No backup. Just consider cross-signing secrets.
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if (secretStorageReady && allCrossSigningSecretsCached) {
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recoveryState = "Enabled";
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} else {
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recoveryState = "Incomplete";
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}
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}
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}
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if (this.analyticsVerificationState === verificationState && this.analyticsRecoveryState === recoveryState) {
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|
// No changes, no need to send the event nor update the user properties
|
|
return;
|
|
}
|
|
this.analyticsRecoveryState = recoveryState;
|
|
this.analyticsVerificationState = verificationState;
|
|
|
|
// Update user properties
|
|
PosthogAnalytics.instance.setProperty("recoveryState", recoveryState);
|
|
PosthogAnalytics.instance.setProperty("verificationState", verificationState);
|
|
|
|
PosthogAnalytics.instance.trackEvent<CryptoSessionStateChange>({
|
|
eventName: "CryptoSessionState",
|
|
verificationState: verificationState,
|
|
recoveryState: recoveryState,
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Check if key backup is enabled, and if not, raise an `Action.ReportKeyBackupNotEnabled` event (which will
|
|
* trigger an auto-rageshake).
|
|
*/
|
|
private checkKeyBackupStatus = async (): Promise<void> => {
|
|
if (this.keyBackupStatusChecked || !this.client) {
|
|
return;
|
|
}
|
|
const activeKeyBackupVersion = await this.client.getCrypto()?.getActiveSessionBackupVersion();
|
|
// if key backup is enabled, no need to check this ever again (XXX: why only when it is enabled?)
|
|
this.keyBackupStatusChecked = !!activeKeyBackupVersion;
|
|
|
|
if (!activeKeyBackupVersion) {
|
|
dis.dispatch({ action: Action.ReportKeyBackupNotEnabled });
|
|
}
|
|
};
|
|
private keyBackupStatusChecked = false;
|
|
|
|
private onRecordClientInformationSettingChange: CallbackFn = (
|
|
_originalSettingName,
|
|
_roomId,
|
|
_level,
|
|
_newLevel,
|
|
newValue,
|
|
) => {
|
|
const prevValue = this.shouldRecordClientInformation;
|
|
|
|
this.shouldRecordClientInformation = !!newValue;
|
|
|
|
if (this.shouldRecordClientInformation !== prevValue) {
|
|
this.updateClientInformation();
|
|
}
|
|
};
|
|
|
|
private updateClientInformation = async (): Promise<void> => {
|
|
if (!this.client) return;
|
|
try {
|
|
if (this.shouldRecordClientInformation) {
|
|
await recordClientInformation(this.client, SdkConfig.get(), PlatformPeg.get() ?? undefined);
|
|
} else {
|
|
await removeClientInformation(this.client);
|
|
}
|
|
} catch (error) {
|
|
// this is a best effort operation
|
|
// log the error without rethrowing
|
|
logger.error("Failed to update client information", error);
|
|
}
|
|
};
|
|
}
|