signal-desktop/ts/ConversationController.ts
2020-08-11 19:15:06 -04:00

672 lines
21 KiB
TypeScript

const MAX_MESSAGE_BODY_LENGTH = 64 * 1024;
import { debounce, reduce, uniq, without } from 'lodash';
import dataInterface from './sql/Client';
import {
ConversationModelCollectionType,
ConversationModelType,
ConversationTypeType,
} from './model-types.d';
import { SendOptionsType } from './textsecure/SendMessage';
const {
getAllConversations,
getAllGroupsInvolvingId,
getMessagesBySentAt,
migrateConversationMessages,
removeConversation,
saveConversation,
updateConversation,
} = dataInterface;
// We have to run this in background.js, after all backbone models and collections on
// Whisper.* have been created. Once those are in typescript we can use more reasonable
// require statements for referencing these things, giving us more flexibility here.
export function start() {
const conversations = new window.Whisper.ConversationCollection();
// This class is entirely designed to keep the app title, badge and tray icon updated.
// In the future it could listen to redux changes and do its updates there.
const inboxCollection = new (window.Backbone.Collection.extend({
initialize() {
this.listenTo(conversations, 'add change:active_at', this.addActive);
this.listenTo(conversations, 'reset', () => this.reset([]));
this.on(
'add remove change:unreadCount',
debounce(this.updateUnreadCount.bind(this), 1000)
);
},
addActive(model: ConversationModelType) {
if (model.get('active_at')) {
this.add(model);
} else {
this.remove(model);
}
},
updateUnreadCount() {
const newUnreadCount = reduce(
this.map((m: ConversationModelType) => m.get('unreadCount')),
(item: number, memo: number) => (item || 0) + memo,
0
);
window.storage.put('unreadCount', newUnreadCount);
if (newUnreadCount > 0) {
window.setBadgeCount(newUnreadCount);
window.document.title = `${window.getTitle()} (${newUnreadCount})`;
} else {
window.setBadgeCount(0);
window.document.title = window.getTitle();
}
window.updateTrayIcon(newUnreadCount);
},
}))();
window.getInboxCollection = () => inboxCollection;
window.getConversations = () => conversations;
window.ConversationController = new ConversationController(conversations);
}
export class ConversationController {
_initialFetchComplete: boolean | undefined;
_initialPromise: Promise<void> = Promise.resolve();
_conversations: ConversationModelCollectionType;
constructor(conversations?: ConversationModelCollectionType) {
if (!conversations) {
throw new Error('ConversationController: need conversation collection!');
}
this._conversations = conversations;
}
get(id?: string | null): ConversationModelType | undefined {
if (!this._initialFetchComplete) {
throw new Error(
'ConversationController.get() needs complete initial fetch'
);
}
// This function takes null just fine. Backbone typings are too restrictive.
return this._conversations.get(id as string);
}
dangerouslyCreateAndAdd(attributes: Partial<ConversationModelType>) {
return this._conversations.add(attributes);
}
getOrCreate(
identifier: string,
type: ConversationTypeType,
additionalInitialProps = {}
) {
if (typeof identifier !== 'string') {
throw new TypeError("'id' must be a string");
}
if (type !== 'private' && type !== 'group') {
throw new TypeError(
`'type' must be 'private' or 'group'; got: '${type}'`
);
}
if (!this._initialFetchComplete) {
throw new Error(
'ConversationController.get() needs complete initial fetch'
);
}
let conversation = this._conversations.get(identifier);
if (conversation) {
return conversation;
}
const id = window.getGuid();
if (type === 'group') {
conversation = this._conversations.add({
id,
uuid: null,
e164: null,
groupId: identifier,
type,
version: 2,
...additionalInitialProps,
});
} else if (window.isValidGuid(identifier)) {
conversation = this._conversations.add({
id,
uuid: identifier,
e164: null,
groupId: null,
type,
version: 2,
...additionalInitialProps,
});
} else {
conversation = this._conversations.add({
id,
uuid: null,
e164: identifier,
groupId: null,
type,
version: 2,
...additionalInitialProps,
});
}
const create = async () => {
if (!conversation.isValid()) {
const validationError = conversation.validationError || {};
window.log.error(
'Contact is not valid. Not saving, but adding to collection:',
conversation.idForLogging(),
validationError.stack
);
return conversation;
}
try {
await saveConversation(conversation.attributes);
} catch (error) {
window.log.error(
'Conversation save failed! ',
identifier,
type,
'Error:',
error && error.stack ? error.stack : error
);
throw error;
}
return conversation;
};
conversation.initialPromise = create();
return conversation;
}
async getOrCreateAndWait(
id: string,
type: ConversationTypeType,
additionalInitialProps = {}
) {
return this._initialPromise.then(async () => {
const conversation = this.getOrCreate(id, type, additionalInitialProps);
if (conversation) {
return conversation.initialPromise.then(() => conversation);
}
return Promise.reject(
new Error('getOrCreateAndWait: did not get conversation')
);
});
}
getConversationId(address: string) {
if (!address) {
return null;
}
const [id] = window.textsecure.utils.unencodeNumber(address);
const conv = this.get(id);
if (conv) {
return conv.get('id');
}
return null;
}
getOurConversationId() {
const e164 = window.textsecure.storage.user.getNumber();
const uuid = window.textsecure.storage.user.getUuid();
return this.ensureContactIds({ e164, uuid, highTrust: true });
}
/**
* Given a UUID and/or an E164, resolves to a string representing the local
* database id of the given contact. In high trust mode, it may create new contacts,
* and it may merge contacts.
*
* highTrust = uuid/e164 pairing came from CDS, the server, or your own device
*/
// tslint:disable-next-line cyclomatic-complexity max-func-body-length
ensureContactIds({
e164,
uuid,
highTrust,
}: {
e164?: string;
uuid?: string;
highTrust?: boolean;
}) {
// Check for at least one parameter being provided. This is necessary
// because this path can be called on startup to resolve our own ID before
// our phone number or UUID are known. The existing behavior in these
// cases can handle a returned `undefined` id, so we do that.
const normalizedUuid = uuid ? uuid.toLowerCase() : undefined;
const identifier = normalizedUuid || e164;
if ((!e164 && !uuid) || !identifier) {
return undefined;
}
const convoE164 = this.get(e164);
const convoUuid = this.get(normalizedUuid);
// 1. Handle no match at all
if (!convoE164 && !convoUuid) {
window.log.info(
'ensureContactIds: Creating new contact, no matches found'
);
const newConvo = this.getOrCreate(identifier, 'private');
if (highTrust && e164) {
newConvo.updateE164(e164);
}
if (normalizedUuid) {
newConvo.updateUuid(normalizedUuid);
}
if (highTrust && e164 && normalizedUuid) {
updateConversation(newConvo.attributes);
}
return newConvo.get('id');
// 2. Handle match on only E164
} else if (convoE164 && !convoUuid) {
const haveUuid = Boolean(normalizedUuid);
window.log.info(
`ensureContactIds: e164-only match found (have UUID: ${haveUuid})`
);
// If we are only searching based on e164 anyway, then return the first result
if (!normalizedUuid) {
return convoE164.get('id');
}
// Fill in the UUID for an e164-only contact
if (normalizedUuid && !convoE164.get('uuid')) {
if (highTrust) {
window.log.info('ensureContactIds: Adding UUID to e164-only match');
convoE164.updateUuid(normalizedUuid);
updateConversation(convoE164.attributes);
}
return convoE164.get('id');
}
window.log.info(
'ensureContactIds: e164 already had UUID, creating a new contact'
);
// If existing e164 match already has UUID, create a new contact...
const newConvo = this.getOrCreate(normalizedUuid, 'private');
if (highTrust) {
window.log.info(
'ensureContactIds: Moving e164 from old contact to new'
);
// Remove the e164 from the old contact...
convoE164.set({ e164: undefined });
updateConversation(convoE164.attributes);
// ...and add it to the new one.
newConvo.updateE164(e164);
updateConversation(newConvo.attributes);
}
return newConvo.get('id');
// 3. Handle match on only UUID
} else if (!convoE164 && convoUuid) {
window.log.info(
`ensureContactIds: UUID-only match found (have e164: ${Boolean(e164)})`
);
if (e164 && highTrust) {
convoUuid.updateE164(e164);
updateConversation(convoUuid.attributes);
}
return convoUuid.get('id');
}
// For some reason, TypeScript doesn't believe that we can trust that these two values
// are truthy by this point. So we'll throw if we get there.
if (!convoE164 || !convoUuid) {
throw new Error('ensureContactIds: convoE164 or convoUuid are falsey!');
}
// Now, we know that we have a match for both e164 and uuid checks
if (convoE164 === convoUuid) {
return convoUuid.get('id');
}
if (highTrust) {
// Conflict: If e164 match already has a UUID, we remove its e164.
if (convoE164.get('uuid') && convoE164.get('uuid') !== normalizedUuid) {
window.log.info(
'ensureContactIds: e164 match had different UUID than incoming pair, removing its e164.'
);
// Remove the e164 from the old contact...
convoE164.set({ e164: undefined });
updateConversation(convoE164.attributes);
// ...and add it to the new one.
convoUuid.updateE164(e164);
updateConversation(convoUuid.attributes);
return convoUuid.get('id');
}
window.log.warn(
`ensureContactIds: Found a split contact - UUID ${normalizedUuid} and E164 ${e164}. Merging.`
);
// Conflict: If e164 match has no UUID, we merge. We prefer the UUID match.
// Note: no await here, we want to keep this function synchronous
convoUuid.updateE164(e164);
this.combineContacts(convoUuid, convoE164)
.then(() => {
// If the old conversation was currently displayed, we load the new one
window.Whisper.events.trigger('refreshConversation', {
newId: convoUuid.get('id'),
oldId: convoE164.get('id'),
});
})
.catch(error => {
const errorText = error && error.stack ? error.stack : error;
window.log.warn(
`ensureContactIds error combining contacts: ${errorText}`
);
});
}
return convoUuid.get('id');
}
async checkForConflicts() {
window.log.info('checkForConflicts: starting...');
const byUuid = Object.create(null);
const byE164 = Object.create(null);
// We iterate from the oldest conversations to the newest. This allows us, in a
// conflict case, to keep the one with activity the most recently.
const models = [...this._conversations.models.reverse()];
const max = models.length;
for (let i = 0; i < max; i += 1) {
const conversation = models[i];
const uuid = conversation.get('uuid');
const e164 = conversation.get('e164');
if (uuid) {
const existing = byUuid[uuid];
if (!existing) {
byUuid[uuid] = conversation;
} else {
window.log.warn(
`checkForConflicts: Found conflict with uuid ${uuid}`
);
// Keep the newer one if it has an e164, otherwise keep existing
if (conversation.get('e164')) {
// Keep new one
// eslint-disable-next-line no-await-in-loop
await this.combineContacts(conversation, existing);
byUuid[uuid] = conversation;
} else {
// Keep existing - note that this applies if neither had an e164
// eslint-disable-next-line no-await-in-loop
await this.combineContacts(existing, conversation);
}
}
}
if (e164) {
const existing = byE164[e164];
if (!existing) {
byE164[e164] = conversation;
} else {
// If we have two contacts with the same e164 but different truthy UUIDs, then
// we'll delete the e164 on the older one
if (
conversation.get('uuid') &&
existing.get('uuid') &&
conversation.get('uuid') !== existing.get('uuid')
) {
window.log.warn(
`checkForConflicts: Found two matches on e164 ${e164} with different truthy UUIDs. Dropping e164 on older.`
);
existing.set({ e164: undefined });
updateConversation(existing.attributes);
byE164[e164] = conversation;
// eslint-disable-next-line no-continue
continue;
}
window.log.warn(
`checkForConflicts: Found conflict with e164 ${e164}`
);
// Keep the newer one if it has a UUID, otherwise keep existing
if (conversation.get('uuid')) {
// Keep new one
// eslint-disable-next-line no-await-in-loop
await this.combineContacts(conversation, existing);
byE164[e164] = conversation;
} else {
// Keep existing - note that this applies if neither had a UUID
// eslint-disable-next-line no-await-in-loop
await this.combineContacts(existing, conversation);
}
}
}
}
window.log.info('checkForConflicts: complete!');
}
async combineContacts(
current: ConversationModelType,
obsolete: ConversationModelType
) {
const obsoleteId = obsolete.get('id');
const currentId = current.get('id');
window.log.warn('combineContacts: Combining two conversations', {
obsolete: obsoleteId,
current: currentId,
});
if (!current.get('profileKey') && obsolete.get('profileKey')) {
window.log.warn(
'combineContacts: Copying profile key from old to new contact'
);
await current.setProfileKey(obsolete.get('profileKey'));
}
window.log.warn(
'combineContacts: Delete all sessions tied to old conversationId'
);
const deviceIds = await window.textsecure.storage.protocol.getDeviceIds(
obsoleteId
);
await Promise.all(
deviceIds.map(async deviceId => {
await window.textsecure.storage.protocol.removeSession(
`${obsoleteId}.${deviceId}`
);
})
);
window.log.warn(
'combineContacts: Delete all identity information tied to old conversationId'
);
await window.textsecure.storage.protocol.removeIdentityKey(obsoleteId);
window.log.warn(
'combineContacts: Ensure that all V1 groups have new conversationId instead of old'
);
const groups = await this.getAllGroupsInvolvingId(obsoleteId);
groups.forEach(group => {
const members = group.get('members');
const withoutObsolete = without(members, obsoleteId);
const currentAdded = uniq([...withoutObsolete, currentId]);
group.set({
members: currentAdded,
});
updateConversation(group.attributes);
});
// Note: we explicitly don't want to update V2 groups
window.log.warn(
'combineContacts: Delete the obsolete conversation from the database'
);
await removeConversation(obsoleteId, {
Conversation: window.Whisper.Conversation,
});
window.log.warn('combineContacts: Update messages table');
await migrateConversationMessages(obsoleteId, currentId);
window.log.warn(
'combineContacts: Eliminate old conversation from ConversationController lookups'
);
this._conversations.remove(obsolete);
this._conversations.resetLookups();
window.log.warn('combineContacts: Complete!', {
obsolete: obsoleteId,
current: currentId,
});
}
/**
* Given a groupId and optional additional initialization properties,
* ensures the existence of a group conversation and returns a string
* representing the local database ID of the group conversation.
*/
ensureGroup(groupId: string, additionalInitProps = {}) {
return this.getOrCreate(groupId, 'group', additionalInitProps).get('id');
}
/**
* Given certain metadata about a message (an identifier of who wrote the
* message and the sent_at timestamp of the message) returns the
* conversation the message belongs to OR null if a conversation isn't
* found.
*/
async getConversationForTargetMessage(
targetFromId: string,
targetTimestamp: number
) {
const messages = await getMessagesBySentAt(targetTimestamp, {
MessageCollection: window.Whisper.MessageCollection,
});
const targetMessage = messages.find(m => {
const contact = m.getContact();
if (!contact) {
return false;
}
const mcid = contact.get('id');
return mcid === targetFromId;
});
if (targetMessage) {
return targetMessage.getConversation();
}
return null;
}
prepareForSend(
id: string,
options?: any
): {
wrap: (promise: Promise<any>) => Promise<void>;
sendOptions: SendOptionsType | undefined;
} {
// id is any valid conversation identifier
const conversation = this.get(id);
const sendOptions = conversation
? conversation.getSendOptions(options)
: undefined;
const wrap = conversation
? conversation.wrapSend.bind(conversation)
: async (promise: Promise<any>) => promise;
return { wrap, sendOptions };
}
async getAllGroupsInvolvingId(
conversationId: string
): Promise<Array<ConversationModelType>> {
const groups = await getAllGroupsInvolvingId(conversationId, {
ConversationCollection: window.Whisper.ConversationCollection,
});
return groups.map(group => this._conversations.add(group));
}
async loadPromise() {
return this._initialPromise;
}
reset() {
this._initialPromise = Promise.resolve();
this._initialFetchComplete = false;
this._conversations.reset([]);
}
isFetchComplete() {
return this._initialFetchComplete;
}
async load() {
window.log.info('ConversationController: starting initial fetch');
if (this._conversations.length) {
throw new Error('ConversationController: Already loaded!');
}
const load = async () => {
try {
const collection = await getAllConversations({
ConversationCollection: window.Whisper.ConversationCollection,
});
this._conversations.add(collection.models);
this._initialFetchComplete = true;
await Promise.all(
this._conversations.map(async conversation => {
// This call is important to allow Conversation models not to generate their
// cached props on initial construction if we're in the middle of the load
// from the database. Then we come back to the models when it is safe and
// generate those props.
conversation.generateProps();
if (!conversation.get('lastMessage')) {
await conversation.updateLastMessage();
}
// In case a too-large draft was saved to the database
const draft = conversation.get('draft');
if (draft && draft.length > MAX_MESSAGE_BODY_LENGTH) {
conversation.set({
draft: draft.slice(0, MAX_MESSAGE_BODY_LENGTH),
});
updateConversation(conversation.attributes);
}
})
);
window.log.info('ConversationController: done with initial fetch');
} catch (error) {
window.log.error(
'ConversationController: initial fetch failed',
error && error.stack ? error.stack : error
);
throw error;
}
};
this._initialPromise = load();
return this._initialPromise;
}
}