339 lines
13 KiB
TypeScript
339 lines
13 KiB
TypeScript
/*
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Copyright 2015, 2016 OpenMarket Ltd
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Copyright 2019, 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 { MatrixClient } from "matrix-js-sdk/src/client";
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import { Room } from "matrix-js-sdk/src/models/room";
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import { EventType } from "matrix-js-sdk/src/@types/event";
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import { MatrixClientPeg } from './MatrixClientPeg';
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import Modal from './Modal';
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import { _t } from './languageHandler';
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import dis from "./dispatcher/dispatcher";
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import * as Rooms from "./Rooms";
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import DMRoomMap from "./utils/DMRoomMap";
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import { getAddressType } from "./UserAddress";
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import { getE2EEWellKnown } from "./utils/WellKnownUtils";
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import GroupStore from "./stores/GroupStore";
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import CountlyAnalytics from "./CountlyAnalytics";
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import { isJoinedOrNearlyJoined } from "./utils/membership";
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import { VIRTUAL_ROOM_EVENT_TYPE } from "./CallHandler";
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import SpaceStore from "./stores/SpaceStore";
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import { makeSpaceParentEvent } from "./utils/space";
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import { Action } from "./dispatcher/actions";
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import { ICreateRoomOpts } from "matrix-js-sdk/src/@types/requests";
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import { Preset, Visibility } from "matrix-js-sdk/src/@types/partials";
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import ErrorDialog from "./components/views/dialogs/ErrorDialog";
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import Spinner from "./components/views/elements/Spinner";
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// we define a number of interfaces which take their names from the js-sdk
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/* eslint-disable camelcase */
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export interface IOpts {
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dmUserId?: string;
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createOpts?: ICreateRoomOpts;
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spinner?: boolean;
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guestAccess?: boolean;
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encryption?: boolean;
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inlineErrors?: boolean;
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andView?: boolean;
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associatedWithCommunity?: string;
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parentSpace?: Room;
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}
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/**
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* Create a new room, and switch to it.
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*
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* @param {object=} opts parameters for creating the room
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* @param {string=} opts.dmUserId If specified, make this a DM room for this user and invite them
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* @param {object=} opts.createOpts set of options to pass to createRoom call.
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* @param {bool=} opts.spinner True to show a modal spinner while the room is created.
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* Default: True
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* @param {bool=} opts.guestAccess Whether to enable guest access.
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* Default: True
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* @param {bool=} opts.encryption Whether to enable encryption.
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* Default: False
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* @param {bool=} opts.inlineErrors True to raise errors off the promise instead of resolving to null.
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* Default: False
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* @param {bool=} opts.andView True to dispatch an action to view the room once it has been created.
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*
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* @returns {Promise} which resolves to the room id, or null if the
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* action was aborted or failed.
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*/
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export default function createRoom(opts: IOpts): Promise<string | null> {
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opts = opts || {};
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if (opts.spinner === undefined) opts.spinner = true;
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if (opts.guestAccess === undefined) opts.guestAccess = true;
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if (opts.encryption === undefined) opts.encryption = false;
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const startTime = CountlyAnalytics.getTimestamp();
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const client = MatrixClientPeg.get();
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if (client.isGuest()) {
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dis.dispatch({ action: 'require_registration' });
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return Promise.resolve(null);
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}
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const defaultPreset = opts.dmUserId ? Preset.TrustedPrivateChat : Preset.PrivateChat;
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// set some defaults for the creation
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const createOpts: ICreateRoomOpts = opts.createOpts || {};
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createOpts.preset = createOpts.preset || defaultPreset;
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createOpts.visibility = createOpts.visibility || Visibility.Private;
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if (opts.dmUserId && createOpts.invite === undefined) {
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switch (getAddressType(opts.dmUserId)) {
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case 'mx-user-id':
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createOpts.invite = [opts.dmUserId];
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break;
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case 'email':
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createOpts.invite_3pid = [{
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id_server: MatrixClientPeg.get().getIdentityServerUrl(true),
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medium: 'email',
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address: opts.dmUserId,
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}];
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}
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}
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if (opts.dmUserId && createOpts.is_direct === undefined) {
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createOpts.is_direct = true;
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}
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// By default, view the room after creating it
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if (opts.andView === undefined) {
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opts.andView = true;
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}
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createOpts.initial_state = createOpts.initial_state || [];
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// Allow guests by default since the room is private and they'd
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// need an invite. This means clicking on a 3pid invite email can
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// actually drop you right in to a chat.
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if (opts.guestAccess) {
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createOpts.initial_state.push({
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type: 'm.room.guest_access',
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state_key: '',
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content: {
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guest_access: 'can_join',
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},
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});
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}
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if (opts.encryption) {
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createOpts.initial_state.push({
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type: 'm.room.encryption',
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state_key: '',
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content: {
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algorithm: 'm.megolm.v1.aes-sha2',
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},
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});
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}
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if (opts.parentSpace) {
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opts.createOpts.initial_state.push(makeSpaceParentEvent(opts.parentSpace, true));
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opts.createOpts.initial_state.push({
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type: EventType.RoomHistoryVisibility,
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content: {
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"history_visibility": opts.createOpts.preset === Preset.PublicChat ? "world_readable" : "invited",
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},
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});
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}
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let modal;
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if (opts.spinner) modal = Modal.createDialog(Spinner, null, 'mx_Dialog_spinner');
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let roomId;
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return client.createRoom(createOpts).finally(function() {
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if (modal) modal.close();
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}).then(function(res) {
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roomId = res.room_id;
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if (opts.dmUserId) {
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return Rooms.setDMRoom(roomId, opts.dmUserId);
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} else {
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return Promise.resolve();
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}
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}).then(() => {
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if (opts.parentSpace) {
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return SpaceStore.instance.addRoomToSpace(opts.parentSpace, roomId, [client.getDomain()], true);
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}
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if (opts.associatedWithCommunity) {
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return GroupStore.addRoomToGroup(opts.associatedWithCommunity, roomId, false);
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}
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}).then(function() {
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// NB createRoom doesn't block on the client seeing the echo that the
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// room has been created, so we race here with the client knowing that
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// the room exists, causing things like
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// https://github.com/vector-im/vector-web/issues/1813
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// Even if we were to block on the echo, servers tend to split the room
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// state over multiple syncs so we can't atomically know when we have the
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// entire thing.
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if (opts.andView) {
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dis.dispatch({
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action: 'view_room',
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room_id: roomId,
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should_peek: false,
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// Creating a room will have joined us to the room,
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// so we are expecting the room to come down the sync
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// stream, if it hasn't already.
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joining: true,
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justCreatedOpts: opts,
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});
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}
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CountlyAnalytics.instance.trackRoomCreate(startTime, roomId);
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return roomId;
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}, function(err) {
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// Raise the error if the caller requested that we do so.
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if (opts.inlineErrors) throw err;
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// We also failed to join the room (this sets joining to false in RoomViewStore)
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dis.dispatch({
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action: Action.JoinRoomError,
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roomId,
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});
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console.error("Failed to create room " + roomId + " " + err);
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let description = _t("Server may be unavailable, overloaded, or you hit a bug.");
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if (err.errcode === "M_UNSUPPORTED_ROOM_VERSION") {
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// Technically not possible with the UI as of April 2019 because there's no
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// options for the user to change this. However, it's not a bad thing to report
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// the error to the user for if/when the UI is available.
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description = _t("The server does not support the room version specified.");
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}
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Modal.createTrackedDialog('Failure to create room', '', ErrorDialog, {
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title: _t("Failure to create room"),
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description,
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});
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return null;
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});
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}
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export function findDMForUser(client: MatrixClient, userId: string): Room {
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const roomIds = DMRoomMap.shared().getDMRoomsForUserId(userId);
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const rooms = roomIds.map(id => client.getRoom(id));
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const suitableDMRooms = rooms.filter(r => {
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// Validate that we are joined and the other person is also joined. We'll also make sure
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// that the room also looks like a DM (until we have canonical DMs to tell us). For now,
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// a DM is a room of two people that contains those two people exactly. This does mean
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// that bots, assistants, etc will ruin a room's DM-ness, though this is a problem for
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// canonical DMs to solve.
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if (r && r.getMyMembership() === "join") {
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const members = r.currentState.getMembers();
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const joinedMembers = members.filter(m => isJoinedOrNearlyJoined(m.membership));
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const otherMember = joinedMembers.find(m => m.userId === userId);
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return otherMember && joinedMembers.length === 2;
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}
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return false;
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}).sort((r1, r2) => {
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return r2.getLastActiveTimestamp() -
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r1.getLastActiveTimestamp();
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});
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if (suitableDMRooms.length) {
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return suitableDMRooms[0];
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}
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}
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/*
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* Try to ensure the user is already in the megolm session before continuing
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* NOTE: this assumes you've just created the room and there's not been an opportunity
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* for other code to run, so we shouldn't miss RoomState.newMember when it comes by.
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*/
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export async function _waitForMember(client: MatrixClient, roomId: string, userId: string, opts = { timeout: 1500 }) {
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const { timeout } = opts;
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let handler;
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return new Promise((resolve) => {
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handler = function(_event, _roomstate, member) {
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if (member.userId !== userId) return;
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if (member.roomId !== roomId) return;
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resolve(true);
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};
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client.on("RoomState.newMember", handler);
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/* We don't want to hang if this goes wrong, so we proceed and hope the other
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user is already in the megolm session */
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setTimeout(resolve, timeout, false);
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}).finally(() => {
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client.removeListener("RoomState.newMember", handler);
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});
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}
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/*
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* Ensure that for every user in a room, there is at least one device that we
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* can encrypt to.
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*/
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export async function canEncryptToAllUsers(client: MatrixClient, userIds: string[]) {
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try {
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const usersDeviceMap = await client.downloadKeys(userIds);
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// { "@user:host": { "DEVICE": {...}, ... }, ... }
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return Object.values(usersDeviceMap).every((userDevices) =>
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// { "DEVICE": {...}, ... }
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Object.keys(userDevices).length > 0,
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);
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} catch (e) {
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console.error("Error determining if it's possible to encrypt to all users: ", e);
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return false; // assume not
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}
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}
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// Similar to ensureDMExists but also adds creation content
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// without polluting ensureDMExists with unrelated stuff (also
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// they're never encrypted).
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export async function ensureVirtualRoomExists(
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client: MatrixClient, userId: string, nativeRoomId: string,
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): Promise<string> {
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const existingDMRoom = findDMForUser(client, userId);
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let roomId;
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if (existingDMRoom) {
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roomId = existingDMRoom.roomId;
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} else {
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roomId = await createRoom({
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dmUserId: userId,
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spinner: false,
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andView: false,
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createOpts: {
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creation_content: {
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// This allows us to recognise that the room is a virtual room
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// when it comes down our sync stream (we also put the ID of the
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// respective native room in there because why not?)
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[VIRTUAL_ROOM_EVENT_TYPE]: nativeRoomId,
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},
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},
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});
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}
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return roomId;
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}
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export async function ensureDMExists(client: MatrixClient, userId: string): Promise<string> {
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const existingDMRoom = findDMForUser(client, userId);
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let roomId;
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if (existingDMRoom) {
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roomId = existingDMRoom.roomId;
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} else {
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let encryption: boolean = undefined;
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if (privateShouldBeEncrypted()) {
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encryption = await canEncryptToAllUsers(client, [userId]);
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}
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roomId = await createRoom({ encryption, dmUserId: userId, spinner: false, andView: false });
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await _waitForMember(client, roomId, userId);
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}
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return roomId;
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}
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export function privateShouldBeEncrypted(): boolean {
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const e2eeWellKnown = getE2EEWellKnown();
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if (e2eeWellKnown) {
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const defaultDisabled = e2eeWellKnown["default"] === false;
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return !defaultDisabled;
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}
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return true;
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}
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