1140 lines
32 KiB
TypeScript
1140 lines
32 KiB
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { differenceWith, omit, partition } from 'lodash';
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import PQueue from 'p-queue';
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import {
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ErrorCode,
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groupEncrypt,
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ProtocolAddress,
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sealedSenderMultiRecipientEncrypt,
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SenderCertificate,
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UnidentifiedSenderMessageContent,
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} from '@signalapp/signal-client';
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import * as Bytes from '../Bytes';
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import { senderCertificateService } from '../services/senderCertificate';
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import {
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padMessage,
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SenderCertificateMode,
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SendLogCallbackType,
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} from '../textsecure/OutgoingMessage';
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import { Address } from '../types/Address';
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import { QualifiedAddress } from '../types/QualifiedAddress';
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import { UUID } from '../types/UUID';
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import { isEnabled } from '../RemoteConfig';
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import { isOlderThan } from './timestamp';
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import {
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GroupSendOptionsType,
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SendOptionsType,
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} from '../textsecure/SendMessage';
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import { HTTPError } from '../textsecure/Errors';
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import { IdentityKeys, SenderKeys, Sessions } from '../LibSignalStores';
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import { ConversationModel } from '../models/conversations';
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import { DeviceType, CallbackResultType } from '../textsecure/Types.d';
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import { getKeysForIdentifier } from '../textsecure/getKeysForIdentifier';
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import { ConversationAttributesType } from '../model-types.d';
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import {
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handleMessageSend,
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SEALED_SENDER,
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SendTypesType,
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shouldSaveProto,
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} from './handleMessageSend';
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import { parseIntOrThrow } from './parseIntOrThrow';
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import {
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multiRecipient200ResponseSchema,
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multiRecipient409ResponseSchema,
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multiRecipient410ResponseSchema,
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} from '../textsecure/WebAPI';
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import { SignalService as Proto } from '../protobuf';
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import * as RemoteConfig from '../RemoteConfig';
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import { strictAssert } from './assert';
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import { isGroupV2 } from './whatTypeOfConversation';
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import * as log from '../logging/log';
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const ERROR_EXPIRED_OR_MISSING_DEVICES = 409;
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const ERROR_STALE_DEVICES = 410;
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const HOUR = 60 * 60 * 1000;
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const DAY = 24 * HOUR;
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const MAX_CONCURRENCY = 5;
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// sendWithSenderKey is recursive, but we don't want to loop back too many times.
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const MAX_RECURSION = 10;
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const ACCESS_KEY_LENGTH = 16;
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const ZERO_ACCESS_KEY = Bytes.toBase64(new Uint8Array(ACCESS_KEY_LENGTH));
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// Public API:
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export async function sendToGroup({
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contentHint,
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conversation,
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groupSendOptions,
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messageId,
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isPartialSend,
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sendOptions,
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sendType,
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}: {
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contentHint: number;
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conversation: ConversationModel;
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groupSendOptions: GroupSendOptionsType;
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isPartialSend?: boolean;
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messageId: string | undefined;
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sendOptions?: SendOptionsType;
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sendType: SendTypesType;
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}): Promise<CallbackResultType> {
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strictAssert(
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window.textsecure.messaging,
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'sendToGroup: textsecure.messaging not available!'
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);
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const { timestamp } = groupSendOptions;
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const recipients = getRecipients(groupSendOptions);
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// First, do the attachment upload and prepare the proto we'll be sending
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const protoAttributes = window.textsecure.messaging.getAttrsFromGroupOptions(
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groupSendOptions
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);
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const contentMessage = await window.textsecure.messaging.getContentMessage(
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protoAttributes
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);
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return sendContentMessageToGroup({
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contentHint,
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contentMessage,
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conversation,
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isPartialSend,
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messageId,
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recipients,
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sendOptions,
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sendType,
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timestamp,
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});
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}
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export async function sendContentMessageToGroup({
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contentHint,
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contentMessage,
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conversation,
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isPartialSend,
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messageId,
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online,
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recipients,
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sendOptions,
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sendType,
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timestamp,
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}: {
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contentHint: number;
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contentMessage: Proto.Content;
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conversation: ConversationModel;
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isPartialSend?: boolean;
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messageId: string | undefined;
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online?: boolean;
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recipients: Array<string>;
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sendOptions?: SendOptionsType;
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sendType: SendTypesType;
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timestamp: number;
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}): Promise<CallbackResultType> {
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const logId = conversation.idForLogging();
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strictAssert(
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window.textsecure.messaging,
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'sendContentMessageToGroup: textsecure.messaging not available!'
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);
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const ourConversationId = window.ConversationController.getOurConversationIdOrThrow();
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const ourConversation = window.ConversationController.get(ourConversationId);
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if (
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isEnabled('desktop.sendSenderKey3') &&
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ourConversation?.get('capabilities')?.senderKey &&
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RemoteConfig.isEnabled('desktop.senderKey.send') &&
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isGroupV2(conversation.attributes)
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) {
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try {
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return await sendToGroupViaSenderKey({
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contentHint,
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contentMessage,
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conversation,
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isPartialSend,
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messageId,
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online,
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recipients,
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recursionCount: 0,
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sendOptions,
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sendType,
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timestamp,
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});
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} catch (error) {
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log.error(
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`sendToGroup/${logId}: Sender Key send failed, logging, proceeding to normal send`,
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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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const sendLogCallback = window.textsecure.messaging.makeSendLogCallback({
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contentHint,
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messageId,
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proto: Buffer.from(Proto.Content.encode(contentMessage).finish()),
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sendType,
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timestamp,
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});
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const groupId = isGroupV2(conversation.attributes)
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? conversation.get('groupId')
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: undefined;
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return window.textsecure.messaging.sendGroupProto({
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contentHint,
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groupId,
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options: { ...sendOptions, online },
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proto: contentMessage,
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recipients,
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sendLogCallback,
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timestamp,
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});
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}
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// The Primary Sender Key workflow
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export async function sendToGroupViaSenderKey(options: {
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contentHint: number;
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contentMessage: Proto.Content;
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conversation: ConversationModel;
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isPartialSend?: boolean;
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messageId: string | undefined;
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online?: boolean;
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recipients: Array<string>;
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recursionCount: number;
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sendOptions?: SendOptionsType;
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sendType: SendTypesType;
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timestamp: number;
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}): Promise<CallbackResultType> {
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const {
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contentHint,
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contentMessage,
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conversation,
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isPartialSend,
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messageId,
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online,
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recursionCount,
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recipients,
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sendOptions,
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sendType,
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timestamp,
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} = options;
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const { ContentHint } = Proto.UnidentifiedSenderMessage.Message;
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const logId = conversation.idForLogging();
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log.info(
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`sendToGroupViaSenderKey/${logId}: Starting ${timestamp}, recursion count ${recursionCount}...`
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);
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if (recursionCount > MAX_RECURSION) {
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throw new Error(
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`sendToGroupViaSenderKey/${logId}: Too much recursion! Count is at ${recursionCount}`
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);
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}
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const groupId = conversation.get('groupId');
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if (!groupId || !isGroupV2(conversation.attributes)) {
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throw new Error(
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`sendToGroupViaSenderKey/${logId}: Missing groupId or group is not GV2`
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);
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}
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if (
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contentHint !== ContentHint.DEFAULT &&
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contentHint !== ContentHint.RESENDABLE &&
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contentHint !== ContentHint.IMPLICIT
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) {
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throw new Error(
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`sendToGroupViaSenderKey/${logId}: Invalid contentHint ${contentHint}`
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);
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}
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strictAssert(
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window.textsecure.messaging,
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'sendToGroupViaSenderKey: textsecure.messaging not available!'
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);
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const {
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attributes,
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}: { attributes: ConversationAttributesType } = conversation;
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// 1. Add sender key info if we have none, or clear out if it's too old
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const THIRTY_DAYS = 30 * DAY;
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if (!attributes.senderKeyInfo) {
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log.info(
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`sendToGroupViaSenderKey/${logId}: Adding initial sender key info`
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);
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conversation.set({
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senderKeyInfo: {
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createdAtDate: Date.now(),
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distributionId: window.getGuid(),
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memberDevices: [],
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},
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});
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window.Signal.Data.updateConversation(attributes);
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} else if (isOlderThan(attributes.senderKeyInfo.createdAtDate, THIRTY_DAYS)) {
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const { createdAtDate } = attributes.senderKeyInfo;
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log.info(
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`sendToGroupViaSenderKey/${logId}: Resetting sender key; ${createdAtDate} is too old`
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);
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await resetSenderKey(conversation);
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}
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// 2. Fetch all devices we believe we'll be sending to
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const ourUuid = window.textsecure.storage.user.getCheckedUuid();
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const {
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devices: currentDevices,
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emptyIdentifiers,
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} = await window.textsecure.storage.protocol.getOpenDevices(
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ourUuid,
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recipients
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);
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// 3. If we have no open sessions with people we believe we are sending to, and we
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// believe that any have signal accounts, fetch their prekey bundle and start
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// sessions with them.
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if (
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emptyIdentifiers.length > 0 &&
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emptyIdentifiers.some(isIdentifierRegistered)
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) {
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await fetchKeysForIdentifiers(emptyIdentifiers);
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// Restart here to capture devices for accounts we just started sessions with
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return sendToGroupViaSenderKey({
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...options,
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recursionCount: recursionCount + 1,
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});
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}
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strictAssert(
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attributes.senderKeyInfo,
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`sendToGroupViaSenderKey/${logId}: expect senderKeyInfo`
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);
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// Note: From here on, we will need to recurse if we change senderKeyInfo
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const {
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memberDevices,
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distributionId,
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createdAtDate,
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} = attributes.senderKeyInfo;
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const memberSet = new Set(conversation.getMembers());
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// 4. Partition devices into sender key and non-sender key groups
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const [devicesForSenderKey, devicesForNormalSend] = partition(
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currentDevices,
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device => isValidSenderKeyRecipient(memberSet, device.identifier)
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);
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const senderKeyRecipients = getUuidsFromDevices(devicesForSenderKey);
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const normalSendRecipients = getUuidsFromDevices(devicesForNormalSend);
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log.info(
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`sendToGroupViaSenderKey/${logId}:` +
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` ${senderKeyRecipients.length} accounts for sender key (${devicesForSenderKey.length} devices),` +
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` ${normalSendRecipients.length} accounts for normal send (${devicesForNormalSend.length} devices)`
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);
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// 5. Ensure we have enough recipients
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if (senderKeyRecipients.length < 2) {
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throw new Error(
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`sendToGroupViaSenderKey/${logId}: Not enough recipients for Sender Key message. Failing over.`
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);
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}
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// 6. Analyze target devices for sender key, determine which have been added or removed
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const {
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newToMemberDevices,
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newToMemberUuids,
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removedFromMemberDevices,
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removedFromMemberUuids,
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} = _analyzeSenderKeyDevices(
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memberDevices,
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devicesForSenderKey,
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isPartialSend
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);
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// 7. If members have been removed from the group, we need to reset our sender key, then
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// start over to get a fresh set of target devices.
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const keyNeedsReset = Array.from(removedFromMemberUuids).some(
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uuid => !conversation.hasMember(uuid)
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);
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if (keyNeedsReset) {
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await resetSenderKey(conversation);
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// Restart here to start over; empty memberDevices means we'll send distribution
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// message to everyone.
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return sendToGroupViaSenderKey({
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...options,
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recursionCount: recursionCount + 1,
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});
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}
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// 8. If there are new members or new devices in the group, we need to ensure that they
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// have our sender key before we send sender key messages to them.
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if (newToMemberUuids.length > 0) {
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log.info(
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`sendToGroupViaSenderKey/${logId}: Sending sender key to ${
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newToMemberUuids.length
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} members: ${JSON.stringify(newToMemberUuids)}`
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);
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await handleMessageSend(
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window.textsecure.messaging.sendSenderKeyDistributionMessage(
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{
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contentHint: ContentHint.RESENDABLE,
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distributionId,
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groupId,
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identifiers: newToMemberUuids,
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},
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sendOptions ? { ...sendOptions, online: false } : undefined
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),
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{ messageIds: [], sendType: 'senderKeyDistributionMessage' }
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);
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// Update memberDevices with new devices
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const updatedMemberDevices = [...memberDevices, ...newToMemberDevices];
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conversation.set({
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senderKeyInfo: {
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createdAtDate,
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distributionId,
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memberDevices: updatedMemberDevices,
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},
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});
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window.Signal.Data.updateConversation(conversation.attributes);
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// Restart here because we might have discovered new or dropped devices as part of
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// distributing our sender key.
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return sendToGroupViaSenderKey({
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...options,
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recursionCount: recursionCount + 1,
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});
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}
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// 9. Update memberDevices with removals which didn't require a reset.
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if (removedFromMemberDevices.length > 0) {
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const updatedMemberDevices = [
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...differenceWith<DeviceType, DeviceType>(
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memberDevices,
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removedFromMemberDevices,
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deviceComparator
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),
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];
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conversation.set({
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senderKeyInfo: {
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createdAtDate,
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distributionId,
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memberDevices: updatedMemberDevices,
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},
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});
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window.Signal.Data.updateConversation(conversation.attributes);
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}
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// 10. Send the Sender Key message!
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let sendLogId: number;
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let senderKeyRecipientsWithDevices: Record<string, Array<number>> = {};
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devicesForSenderKey.forEach(item => {
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const { id, identifier } = item;
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senderKeyRecipientsWithDevices[identifier] ||= [];
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senderKeyRecipientsWithDevices[identifier].push(id);
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});
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try {
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const messageBuffer = await encryptForSenderKey({
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contentHint,
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devices: devicesForSenderKey,
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distributionId,
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contentMessage: Proto.Content.encode(contentMessage).finish(),
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groupId,
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});
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const accessKeys = getXorOfAccessKeys(devicesForSenderKey);
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const result = await window.textsecure.messaging.sendWithSenderKey(
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messageBuffer,
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accessKeys,
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timestamp,
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online
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);
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const parsed = multiRecipient200ResponseSchema.safeParse(result);
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if (parsed.success) {
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const { uuids404 } = parsed.data;
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if (uuids404 && uuids404.length > 0) {
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await _waitForAll({
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tasks: uuids404.map(uuid => async () =>
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markIdentifierUnregistered(uuid)
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),
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});
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}
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senderKeyRecipientsWithDevices = omit(
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senderKeyRecipientsWithDevices,
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uuids404 || []
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);
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} else {
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log.error(
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`sendToGroupViaSenderKey/${logId}: Server returned unexpected 200 response ${JSON.stringify(
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parsed.error.flatten()
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)}`
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);
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}
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if (shouldSaveProto(sendType)) {
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sendLogId = await window.Signal.Data.insertSentProto(
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{
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contentHint,
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proto: Buffer.from(Proto.Content.encode(contentMessage).finish()),
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timestamp,
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},
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{
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recipients: senderKeyRecipientsWithDevices,
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messageIds: messageId ? [messageId] : [],
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}
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);
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}
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} catch (error) {
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if (error.code === ERROR_EXPIRED_OR_MISSING_DEVICES) {
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await handle409Response(logId, error);
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|
|
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// Restart here to capture the right set of devices for our next send.
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return sendToGroupViaSenderKey({
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...options,
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recursionCount: recursionCount + 1,
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});
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}
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if (error.code === ERROR_STALE_DEVICES) {
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await handle410Response(conversation, error);
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// Restart here to use the right registrationIds for devices we already knew about,
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// as well as send our sender key to these re-registered or re-linked devices.
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return sendToGroupViaSenderKey({
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...options,
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recursionCount: recursionCount + 1,
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});
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}
|
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if (error.code === ErrorCode.InvalidRegistrationId && error.addr) {
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const address = error.addr as ProtocolAddress;
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const name = address.name();
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const brokenAccount = window.ConversationController.get(name);
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if (brokenAccount) {
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log.warn(
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`sendToGroupViaSenderKey/${logId}: Disabling sealed sender for ${brokenAccount.idForLogging()}`
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);
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brokenAccount.set({ sealedSender: SEALED_SENDER.DISABLED });
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window.Signal.Data.updateConversation(brokenAccount.attributes);
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// Now that we've eliminate this problematic account, we can try the send again.
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return sendToGroupViaSenderKey({
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...options,
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recursionCount: recursionCount + 1,
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});
|
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}
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}
|
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|
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throw new Error(
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`sendToGroupViaSenderKey/${logId}: Returned unexpected error ${
|
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error.code
|
|
}. Failing over. ${error.stack || error}`
|
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);
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}
|
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|
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// 11. Return early if there are no normal send recipients
|
|
if (normalSendRecipients.length === 0) {
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return {
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dataMessage: contentMessage.dataMessage
|
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? Proto.DataMessage.encode(contentMessage.dataMessage).finish()
|
|
: undefined,
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successfulIdentifiers: senderKeyRecipients,
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unidentifiedDeliveries: senderKeyRecipients,
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|
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contentHint,
|
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timestamp,
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contentProto: Buffer.from(Proto.Content.encode(contentMessage).finish()),
|
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recipients: senderKeyRecipientsWithDevices,
|
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};
|
|
}
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|
|
// 12. Send normal message to the leftover normal recipients. Then combine normal send
|
|
// result with result from sender key send for final return value.
|
|
|
|
// We don't want to use a normal send log callback here, because the proto has already
|
|
// been saved as part of the Sender Key send. We're just adding recipients here.
|
|
const sendLogCallback: SendLogCallbackType = async ({
|
|
identifier,
|
|
deviceIds,
|
|
}: {
|
|
identifier: string;
|
|
deviceIds: Array<number>;
|
|
}) => {
|
|
if (!shouldSaveProto(sendType)) {
|
|
return;
|
|
}
|
|
|
|
const sentToConversation = window.ConversationController.get(identifier);
|
|
if (!sentToConversation) {
|
|
log.warn(
|
|
`sendToGroupViaSenderKey/callback: Unable to find conversation for identifier ${identifier}`
|
|
);
|
|
return;
|
|
}
|
|
const recipientUuid = sentToConversation.get('uuid');
|
|
if (!recipientUuid) {
|
|
log.warn(
|
|
`sendToGroupViaSenderKey/callback: Conversation ${conversation.idForLogging()} had no UUID`
|
|
);
|
|
return;
|
|
}
|
|
|
|
await window.Signal.Data.insertProtoRecipients({
|
|
id: sendLogId,
|
|
recipientUuid,
|
|
deviceIds,
|
|
});
|
|
};
|
|
const normalSendResult = await window.textsecure.messaging.sendGroupProto({
|
|
contentHint,
|
|
groupId,
|
|
options: { ...sendOptions, online },
|
|
proto: contentMessage,
|
|
recipients: normalSendRecipients,
|
|
sendLogCallback,
|
|
timestamp,
|
|
});
|
|
|
|
return {
|
|
dataMessage: contentMessage.dataMessage
|
|
? Proto.DataMessage.encode(contentMessage.dataMessage).finish()
|
|
: undefined,
|
|
errors: normalSendResult.errors,
|
|
failoverIdentifiers: normalSendResult.failoverIdentifiers,
|
|
successfulIdentifiers: [
|
|
...(normalSendResult.successfulIdentifiers || []),
|
|
...senderKeyRecipients,
|
|
],
|
|
unidentifiedDeliveries: [
|
|
...(normalSendResult.unidentifiedDeliveries || []),
|
|
...senderKeyRecipients,
|
|
],
|
|
|
|
contentHint,
|
|
timestamp,
|
|
contentProto: Buffer.from(Proto.Content.encode(contentMessage).finish()),
|
|
recipients: {
|
|
...normalSendResult.recipients,
|
|
...senderKeyRecipientsWithDevices,
|
|
},
|
|
};
|
|
}
|
|
|
|
// Utility Methods
|
|
|
|
export async function _waitForAll<T>({
|
|
tasks,
|
|
maxConcurrency = MAX_CONCURRENCY,
|
|
}: {
|
|
tasks: Array<() => Promise<T>>;
|
|
maxConcurrency?: number;
|
|
}): Promise<Array<T>> {
|
|
const queue = new PQueue({
|
|
concurrency: maxConcurrency,
|
|
timeout: 2 * 60 * 1000,
|
|
});
|
|
return queue.addAll(tasks);
|
|
}
|
|
|
|
function getRecipients(options: GroupSendOptionsType): Array<string> {
|
|
if (options.groupV2) {
|
|
return options.groupV2.members;
|
|
}
|
|
if (options.groupV1) {
|
|
return options.groupV1.members;
|
|
}
|
|
|
|
throw new Error('getRecipients: Unable to extract recipients!');
|
|
}
|
|
|
|
async function markIdentifierUnregistered(identifier: string) {
|
|
const conversation = window.ConversationController.getOrCreate(
|
|
identifier,
|
|
'private'
|
|
);
|
|
|
|
conversation.setUnregistered();
|
|
window.Signal.Data.updateConversation(conversation.attributes);
|
|
|
|
const uuid = UUID.lookup(identifier);
|
|
if (!uuid) {
|
|
log.warn(`No uuid found for ${identifier}`);
|
|
return;
|
|
}
|
|
|
|
await window.textsecure.storage.protocol.archiveAllSessions(uuid);
|
|
}
|
|
|
|
function isIdentifierRegistered(identifier: string) {
|
|
const conversation = window.ConversationController.getOrCreate(
|
|
identifier,
|
|
'private'
|
|
);
|
|
const isUnregistered = conversation.isUnregistered();
|
|
|
|
return !isUnregistered;
|
|
}
|
|
|
|
async function handle409Response(logId: string, error: HTTPError) {
|
|
const parsed = multiRecipient409ResponseSchema.safeParse(error.response);
|
|
if (parsed.success) {
|
|
await _waitForAll({
|
|
tasks: parsed.data.map(item => async () => {
|
|
const { uuid, devices } = item;
|
|
// Start new sessions with devices we didn't know about before
|
|
if (devices.missingDevices && devices.missingDevices.length > 0) {
|
|
await fetchKeysForIdentifier(uuid, devices.missingDevices);
|
|
}
|
|
|
|
// Archive sessions with devices that have been removed
|
|
if (devices.extraDevices && devices.extraDevices.length > 0) {
|
|
const ourUuid = window.textsecure.storage.user.getCheckedUuid();
|
|
|
|
await _waitForAll({
|
|
tasks: devices.extraDevices.map(deviceId => async () => {
|
|
await window.textsecure.storage.protocol.archiveSession(
|
|
new QualifiedAddress(ourUuid, Address.create(uuid, deviceId))
|
|
);
|
|
}),
|
|
});
|
|
}
|
|
}),
|
|
maxConcurrency: 2,
|
|
});
|
|
} else {
|
|
log.error(
|
|
`handle409Response/${logId}: Server returned unexpected 409 response ${JSON.stringify(
|
|
parsed.error.flatten()
|
|
)}`
|
|
);
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
async function handle410Response(
|
|
conversation: ConversationModel,
|
|
error: HTTPError
|
|
) {
|
|
const logId = conversation.idForLogging();
|
|
|
|
const parsed = multiRecipient410ResponseSchema.safeParse(error.response);
|
|
if (parsed.success) {
|
|
await _waitForAll({
|
|
tasks: parsed.data.map(item => async () => {
|
|
const { uuid, devices } = item;
|
|
if (devices.staleDevices && devices.staleDevices.length > 0) {
|
|
const ourUuid = window.textsecure.storage.user.getCheckedUuid();
|
|
|
|
// First, archive our existing sessions with these devices
|
|
await _waitForAll({
|
|
tasks: devices.staleDevices.map(deviceId => async () => {
|
|
await window.textsecure.storage.protocol.archiveSession(
|
|
new QualifiedAddress(ourUuid, Address.create(uuid, deviceId))
|
|
);
|
|
}),
|
|
});
|
|
|
|
// Start new sessions with these devices
|
|
await fetchKeysForIdentifier(uuid, devices.staleDevices);
|
|
|
|
// Forget that we've sent our sender key to these devices, since they've
|
|
// been re-registered or re-linked.
|
|
const senderKeyInfo = conversation.get('senderKeyInfo');
|
|
if (senderKeyInfo) {
|
|
const devicesToRemove: Array<PartialDeviceType> = devices.staleDevices.map(
|
|
id => ({ id, identifier: uuid })
|
|
);
|
|
conversation.set({
|
|
senderKeyInfo: {
|
|
...senderKeyInfo,
|
|
memberDevices: differenceWith(
|
|
senderKeyInfo.memberDevices,
|
|
devicesToRemove,
|
|
partialDeviceComparator
|
|
),
|
|
},
|
|
});
|
|
window.Signal.Data.updateConversation(conversation.attributes);
|
|
}
|
|
}
|
|
}),
|
|
maxConcurrency: 2,
|
|
});
|
|
} else {
|
|
log.error(
|
|
`handle410Response/${logId}: Server returned unexpected 410 response ${JSON.stringify(
|
|
parsed.error.flatten()
|
|
)}`
|
|
);
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
function getXorOfAccessKeys(devices: Array<DeviceType>): Buffer {
|
|
const uuids = getUuidsFromDevices(devices);
|
|
|
|
const result = Buffer.alloc(ACCESS_KEY_LENGTH);
|
|
strictAssert(
|
|
result.length === ACCESS_KEY_LENGTH,
|
|
'getXorOfAccessKeys starting value'
|
|
);
|
|
|
|
uuids.forEach(uuid => {
|
|
const conversation = window.ConversationController.get(uuid);
|
|
if (!conversation) {
|
|
throw new Error(
|
|
`getXorOfAccessKeys: Unable to fetch conversation for UUID ${uuid}`
|
|
);
|
|
}
|
|
|
|
const accessKey = getAccessKey(conversation.attributes);
|
|
if (!accessKey) {
|
|
throw new Error(`getXorOfAccessKeys: No accessKey for UUID ${uuid}`);
|
|
}
|
|
|
|
const accessKeyBuffer = Buffer.from(accessKey, 'base64');
|
|
if (accessKeyBuffer.length !== ACCESS_KEY_LENGTH) {
|
|
throw new Error(
|
|
`getXorOfAccessKeys: Access key for ${uuid} had length ${accessKeyBuffer.length}`
|
|
);
|
|
}
|
|
|
|
for (let i = 0; i < ACCESS_KEY_LENGTH; i += 1) {
|
|
// eslint-disable-next-line no-bitwise
|
|
result[i] ^= accessKeyBuffer[i];
|
|
}
|
|
});
|
|
|
|
return result;
|
|
}
|
|
|
|
async function encryptForSenderKey({
|
|
contentHint,
|
|
contentMessage,
|
|
devices,
|
|
distributionId,
|
|
groupId,
|
|
}: {
|
|
contentHint: number;
|
|
contentMessage: Uint8Array;
|
|
devices: Array<DeviceType>;
|
|
distributionId: string;
|
|
groupId: string;
|
|
}): Promise<Buffer> {
|
|
const ourUuid = window.textsecure.storage.user.getCheckedUuid();
|
|
const ourDeviceId = window.textsecure.storage.user.getDeviceId();
|
|
if (!ourDeviceId) {
|
|
throw new Error(
|
|
'encryptForSenderKey: Unable to fetch our uuid or deviceId'
|
|
);
|
|
}
|
|
|
|
const sender = ProtocolAddress.new(
|
|
ourUuid.toString(),
|
|
parseIntOrThrow(ourDeviceId, 'encryptForSenderKey, ourDeviceId')
|
|
);
|
|
const ourAddress = getOurAddress();
|
|
const senderKeyStore = new SenderKeys({ ourUuid });
|
|
const message = Buffer.from(padMessage(contentMessage));
|
|
|
|
const ciphertextMessage = await window.textsecure.storage.protocol.enqueueSenderKeyJob(
|
|
new QualifiedAddress(ourUuid, ourAddress),
|
|
() => groupEncrypt(sender, distributionId, senderKeyStore, message)
|
|
);
|
|
|
|
const groupIdBuffer = Buffer.from(groupId, 'base64');
|
|
const senderCertificateObject = await senderCertificateService.get(
|
|
SenderCertificateMode.WithoutE164
|
|
);
|
|
if (!senderCertificateObject) {
|
|
throw new Error('encryptForSenderKey: Unable to fetch sender certifiate!');
|
|
}
|
|
|
|
const senderCertificate = SenderCertificate.deserialize(
|
|
Buffer.from(senderCertificateObject.serialized)
|
|
);
|
|
const content = UnidentifiedSenderMessageContent.new(
|
|
ciphertextMessage,
|
|
senderCertificate,
|
|
contentHint,
|
|
groupIdBuffer
|
|
);
|
|
|
|
const recipients = devices
|
|
.slice()
|
|
.sort((a, b): number => {
|
|
if (a.identifier === b.identifier) {
|
|
return 0;
|
|
}
|
|
|
|
if (a.identifier < b.identifier) {
|
|
return -1;
|
|
}
|
|
|
|
return 1;
|
|
})
|
|
.map(device => {
|
|
return ProtocolAddress.new(
|
|
UUID.checkedLookup(device.identifier).toString(),
|
|
device.id
|
|
);
|
|
});
|
|
const identityKeyStore = new IdentityKeys({ ourUuid });
|
|
const sessionStore = new Sessions({ ourUuid });
|
|
return sealedSenderMultiRecipientEncrypt(
|
|
content,
|
|
recipients,
|
|
identityKeyStore,
|
|
sessionStore
|
|
);
|
|
}
|
|
|
|
function isValidSenderKeyRecipient(
|
|
members: Set<ConversationModel>,
|
|
uuid: string
|
|
): boolean {
|
|
const memberConversation = window.ConversationController.get(uuid);
|
|
if (!memberConversation) {
|
|
log.warn(
|
|
`isValidSenderKeyRecipient: Missing conversation model for member ${uuid}`
|
|
);
|
|
return false;
|
|
}
|
|
|
|
if (!members.has(memberConversation)) {
|
|
log.info(
|
|
`isValidSenderKeyRecipient: Sending to ${uuid}, not a group member`
|
|
);
|
|
return false;
|
|
}
|
|
|
|
const capabilities = memberConversation.get('capabilities');
|
|
if (!capabilities?.senderKey) {
|
|
return false;
|
|
}
|
|
|
|
if (!getAccessKey(memberConversation.attributes)) {
|
|
return false;
|
|
}
|
|
|
|
if (memberConversation.isUnregistered()) {
|
|
log.warn(`isValidSenderKeyRecipient: Member ${uuid} is unregistered`);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function deviceComparator(left?: DeviceType, right?: DeviceType): boolean {
|
|
return Boolean(
|
|
left &&
|
|
right &&
|
|
left.id === right.id &&
|
|
left.identifier === right.identifier &&
|
|
left.registrationId === right.registrationId
|
|
);
|
|
}
|
|
|
|
type PartialDeviceType = Omit<DeviceType, 'registrationId'>;
|
|
|
|
function partialDeviceComparator(
|
|
left?: PartialDeviceType,
|
|
right?: PartialDeviceType
|
|
): boolean {
|
|
return Boolean(
|
|
left &&
|
|
right &&
|
|
left.id === right.id &&
|
|
left.identifier === right.identifier
|
|
);
|
|
}
|
|
|
|
function getUuidsFromDevices(devices: Array<DeviceType>): Array<string> {
|
|
const uuids = new Set<string>();
|
|
devices.forEach(device => {
|
|
uuids.add(device.identifier);
|
|
});
|
|
|
|
return Array.from(uuids);
|
|
}
|
|
|
|
export function _analyzeSenderKeyDevices(
|
|
memberDevices: Array<DeviceType>,
|
|
devicesForSend: Array<DeviceType>,
|
|
isPartialSend?: boolean
|
|
): {
|
|
newToMemberDevices: Array<DeviceType>;
|
|
newToMemberUuids: Array<string>;
|
|
removedFromMemberDevices: Array<DeviceType>;
|
|
removedFromMemberUuids: Array<string>;
|
|
} {
|
|
const newToMemberDevices = differenceWith<DeviceType, DeviceType>(
|
|
devicesForSend,
|
|
memberDevices,
|
|
deviceComparator
|
|
);
|
|
const newToMemberUuids = getUuidsFromDevices(newToMemberDevices);
|
|
|
|
// If this is a partial send, we won't do anything with device removals
|
|
if (isPartialSend) {
|
|
return {
|
|
newToMemberDevices,
|
|
newToMemberUuids,
|
|
removedFromMemberDevices: [],
|
|
removedFromMemberUuids: [],
|
|
};
|
|
}
|
|
|
|
const removedFromMemberDevices = differenceWith<DeviceType, DeviceType>(
|
|
memberDevices,
|
|
devicesForSend,
|
|
deviceComparator
|
|
);
|
|
const removedFromMemberUuids = getUuidsFromDevices(removedFromMemberDevices);
|
|
|
|
return {
|
|
newToMemberDevices,
|
|
newToMemberUuids,
|
|
removedFromMemberDevices,
|
|
removedFromMemberUuids,
|
|
};
|
|
}
|
|
|
|
function getOurAddress(): Address {
|
|
const ourUuid = window.textsecure.storage.user.getCheckedUuid();
|
|
const ourDeviceId = window.textsecure.storage.user.getDeviceId();
|
|
if (!ourDeviceId) {
|
|
throw new Error('getOurAddress: Unable to fetch our deviceId');
|
|
}
|
|
return new Address(ourUuid, ourDeviceId);
|
|
}
|
|
|
|
async function resetSenderKey(conversation: ConversationModel): Promise<void> {
|
|
const logId = conversation.idForLogging();
|
|
|
|
log.info(`resetSenderKey/${logId}: Sender key needs reset. Clearing data...`);
|
|
const {
|
|
attributes,
|
|
}: { attributes: ConversationAttributesType } = conversation;
|
|
const { senderKeyInfo } = attributes;
|
|
if (!senderKeyInfo) {
|
|
log.warn(`resetSenderKey/${logId}: No sender key info`);
|
|
return;
|
|
}
|
|
|
|
const { distributionId } = senderKeyInfo;
|
|
const ourAddress = getOurAddress();
|
|
|
|
// Note: We preserve existing distributionId to minimize space for sender key storage
|
|
conversation.set({
|
|
senderKeyInfo: {
|
|
createdAtDate: Date.now(),
|
|
distributionId,
|
|
memberDevices: [],
|
|
},
|
|
});
|
|
window.Signal.Data.updateConversation(conversation.attributes);
|
|
|
|
const ourUuid = window.storage.user.getCheckedUuid();
|
|
await window.textsecure.storage.protocol.removeSenderKey(
|
|
new QualifiedAddress(ourUuid, ourAddress),
|
|
distributionId
|
|
);
|
|
}
|
|
|
|
function getAccessKey(
|
|
attributes: ConversationAttributesType
|
|
): string | undefined {
|
|
const { sealedSender, accessKey } = attributes;
|
|
|
|
if (sealedSender === SEALED_SENDER.ENABLED) {
|
|
return accessKey || undefined;
|
|
}
|
|
|
|
if (
|
|
sealedSender === SEALED_SENDER.UNKNOWN ||
|
|
sealedSender === SEALED_SENDER.UNRESTRICTED
|
|
) {
|
|
return ZERO_ACCESS_KEY;
|
|
}
|
|
|
|
return undefined;
|
|
}
|
|
|
|
async function fetchKeysForIdentifiers(
|
|
identifiers: Array<string>
|
|
): Promise<void> {
|
|
log.info(
|
|
`fetchKeysForIdentifiers: Fetching keys for ${identifiers.length} identifiers`
|
|
);
|
|
|
|
try {
|
|
await _waitForAll({
|
|
tasks: identifiers.map(identifier => async () =>
|
|
fetchKeysForIdentifier(identifier)
|
|
),
|
|
});
|
|
} catch (error) {
|
|
log.error(
|
|
'fetchKeysForIdentifiers: Failed to fetch keys:',
|
|
error && error.stack ? error.stack : error
|
|
);
|
|
}
|
|
}
|
|
|
|
async function fetchKeysForIdentifier(
|
|
identifier: string,
|
|
devices?: Array<number>
|
|
): Promise<void> {
|
|
log.info(
|
|
`fetchKeysForIdentifier: Fetching ${
|
|
devices || 'all'
|
|
} devices for ${identifier}`
|
|
);
|
|
|
|
if (!window.textsecure?.messaging?.server) {
|
|
throw new Error('fetchKeysForIdentifier: No server available!');
|
|
}
|
|
|
|
const emptyConversation = window.ConversationController.getOrCreate(
|
|
identifier,
|
|
'private'
|
|
);
|
|
|
|
try {
|
|
const { accessKeyFailed } = await getKeysForIdentifier(
|
|
identifier,
|
|
window.textsecure?.messaging?.server,
|
|
devices,
|
|
getAccessKey(emptyConversation.attributes)
|
|
);
|
|
if (accessKeyFailed) {
|
|
log.info(
|
|
`fetchKeysForIdentifiers: Setting sealedSender to DISABLED for conversation ${emptyConversation.idForLogging()}`
|
|
);
|
|
emptyConversation.set({
|
|
sealedSender: SEALED_SENDER.DISABLED,
|
|
});
|
|
window.Signal.Data.updateConversation(emptyConversation.attributes);
|
|
}
|
|
} catch (error) {
|
|
if (error.name === 'UnregisteredUserError') {
|
|
await markIdentifierUnregistered(identifier);
|
|
return;
|
|
}
|
|
throw error;
|
|
}
|
|
}
|