signal-desktop/js/models/messages.js
2018-05-07 21:53:39 -04:00

974 lines
31 KiB
JavaScript

/* global _: false */
/* global Backbone: false */
/* global ConversationController: false */
/* global getAccountManager: false */
/* global i18n: false */
/* global Signal: false */
/* global textsecure: false */
/* global Whisper: false */
/* eslint-disable more/no-then */
// eslint-disable-next-line func-names
(function() {
'use strict';
window.Whisper = window.Whisper || {};
const { Message: TypedMessage } = Signal.Types;
const { deleteAttachmentData } = Signal.Migrations;
window.Whisper.Message = Backbone.Model.extend({
database: Whisper.Database,
storeName: 'messages',
initialize(attributes) {
if (_.isObject(attributes)) {
this.set(TypedMessage.initializeSchemaVersion(attributes));
}
this.on('change:attachments', this.updateImageUrl);
this.on('destroy', this.onDestroy);
this.on('change:expirationStartTimestamp', this.setToExpire);
this.on('change:expireTimer', this.setToExpire);
this.on('unload', this.unload);
this.setToExpire();
this.VOICE_FLAG =
textsecure.protobuf.AttachmentPointer.Flags.VOICE_MESSAGE;
},
idForLogging() {
return `${this.get('source')}.${this.get('sourceDevice')} ${this.get(
'sent_at'
)}`;
},
defaults() {
return {
timestamp: new Date().getTime(),
attachments: [],
};
},
validate(attributes) {
const required = ['conversationId', 'received_at', 'sent_at'];
const missing = _.filter(required, attr => !attributes[attr]);
if (missing.length) {
console.log(`Message missing attributes: ${missing}`);
}
},
isEndSession() {
const flag = textsecure.protobuf.DataMessage.Flags.END_SESSION;
// eslint-disable-next-line no-bitwise
return !!(this.get('flags') & flag);
},
isExpirationTimerUpdate() {
const flag =
textsecure.protobuf.DataMessage.Flags.EXPIRATION_TIMER_UPDATE;
// eslint-disable-next-line no-bitwise
return !!(this.get('flags') & flag);
},
isGroupUpdate() {
return !!this.get('group_update');
},
isIncoming() {
return this.get('type') === 'incoming';
},
isUnread() {
return !!this.get('unread');
},
// overriding this to allow for this.unset('unread'), save to db, then fetch()
// to propagate. We don't want the unset key in the db so our unread index stays
// small.
/* eslint-disable */
/* jscs:disable */
fetch(options) {
options = options ? _.clone(options) : {};
if (options.parse === void 0) options.parse = true;
const model = this;
const success = options.success;
options.success = function(resp) {
model.attributes = {}; // this is the only changed line
if (!model.set(model.parse(resp, options), options)) return false;
if (success) success(model, resp, options);
model.trigger('sync', model, resp, options);
};
const error = options.error;
options.error = function(resp) {
if (error) error(model, resp, options);
model.trigger('error', model, resp, options);
};
return this.sync('read', this, options);
},
/* jscs:enable */
/* eslint-enable */
/* eslint-disable more/no-then */
getNameForNumber(number) {
const conversation = ConversationController.get(number);
if (!conversation) {
return number;
}
return conversation.getDisplayName();
},
getDescription() {
if (this.isGroupUpdate()) {
const groupUpdate = this.get('group_update');
if (groupUpdate.left === 'You') {
return i18n('youLeftTheGroup');
} else if (groupUpdate.left) {
return i18n('leftTheGroup', this.getNameForNumber(groupUpdate.left));
}
const messages = [i18n('updatedTheGroup')];
if (groupUpdate.name) {
messages.push(i18n('titleIsNow', groupUpdate.name));
}
if (groupUpdate.joined && groupUpdate.joined.length) {
const names = _.map(
groupUpdate.joined,
this.getNameForNumber.bind(this)
);
if (names.length > 1) {
messages.push(i18n('multipleJoinedTheGroup', names.join(', ')));
} else {
messages.push(i18n('joinedTheGroup', names[0]));
}
}
return messages.join(' ');
}
if (this.isEndSession()) {
return i18n('sessionEnded');
}
if (this.isIncoming() && this.hasErrors()) {
return i18n('incomingError');
}
return this.get('body');
},
isKeyChange() {
return this.get('type') === 'keychange';
},
getNotificationText() {
const description = this.getDescription();
if (description) {
return description;
}
if (this.get('attachments').length > 0) {
return i18n('mediaMessage');
}
if (this.isExpirationTimerUpdate()) {
const { expireTimer } = this.get('expirationTimerUpdate');
return i18n(
'timerSetTo',
Whisper.ExpirationTimerOptions.getAbbreviated(expireTimer)
);
}
if (this.isKeyChange()) {
const conversation = this.getModelForKeyChange();
return i18n('keychanged', conversation.getTitle());
}
return '';
},
async onDestroy() {
this.revokeImageUrl();
const attachments = this.get('attachments');
await Promise.all(attachments.map(deleteAttachmentData));
},
updateImageUrl() {
this.revokeImageUrl();
const attachment = this.get('attachments')[0];
if (attachment) {
const blob = new Blob([attachment.data], {
type: attachment.contentType,
});
this.imageUrl = URL.createObjectURL(blob);
} else {
this.imageUrl = null;
}
},
unload() {
if (this.quoteThumbnail) {
URL.revokeObjectURL(this.quoteThumbnail.objectUrl);
this.quoteThumbnail = null;
}
if (this.quotedMessage) {
this.quotedMessage = null;
}
const quote = this.get('quote');
const attachments = (quote && quote.attachments) || [];
attachments.forEach(attachment => {
if (attachment.thumbnail && attachment.thumbnail.objectUrl) {
URL.revokeObjectURL(attachment.thumbnail.objectUrl);
// eslint-disable-next-line no-param-reassign
attachment.thumbnail.objectUrl = null;
}
});
this.revokeImageUrl();
},
revokeImageUrl() {
if (this.imageUrl) {
URL.revokeObjectURL(this.imageUrl);
this.imageUrl = null;
}
},
getImageUrl() {
if (this.imageUrl === undefined) {
this.updateImageUrl();
}
return this.imageUrl;
},
getQuoteObjectUrl() {
const thumbnail = this.quoteThumbnail;
if (!thumbnail || !thumbnail.objectUrl) {
return null;
}
return thumbnail.objectUrl;
},
getQuoteContact() {
const quote = this.get('quote');
if (!quote) {
return null;
}
const { author } = quote;
if (!author) {
return null;
}
return ConversationController.get(author);
},
processAttachment(attachment, externalObjectUrl) {
const { thumbnail } = attachment;
const objectUrl = (thumbnail && thumbnail.objectUrl) || externalObjectUrl;
const thumbnailWithObjectUrl = !objectUrl
? null
: Object.assign({}, attachment.thumbnail || {}, {
objectUrl,
});
return Object.assign({}, attachment, {
// eslint-disable-next-line no-bitwise
isVoiceMessage: Boolean(attachment.flags & this.VOICE_FLAG),
thumbnail: thumbnailWithObjectUrl,
});
},
getPropsForQuote() {
const quote = this.get('quote');
if (!quote) {
return null;
}
const objectUrl = this.getQuoteObjectUrl();
const OUR_NUMBER = textsecure.storage.user.getNumber();
const { author } = quote;
const contact = this.getQuoteContact();
const authorTitle = contact ? contact.getTitle() : author;
const authorProfileName = contact ? contact.getProfileName() : null;
const authorColor = contact ? contact.getColor() : 'grey';
const isFromMe = contact ? contact.id === OUR_NUMBER : false;
const isIncoming = this.isIncoming();
const onClick = () => {
const { quotedMessage } = this;
if (quotedMessage) {
this.trigger('scroll-to-message', { id: quotedMessage.id });
}
};
return {
attachments: (quote.attachments || []).map(attachment =>
this.processAttachment(attachment, objectUrl)
),
authorColor,
authorProfileName,
authorTitle,
isFromMe,
isIncoming,
onClick: this.quotedMessage ? onClick : null,
text: quote.text,
};
},
getConversation() {
// This needs to be an unsafe call, because this method is called during
// initial module setup. We may be in the middle of the initial fetch to
// the database.
return ConversationController.getUnsafe(this.get('conversationId'));
},
getExpirationTimerUpdateSource() {
if (!this.isExpirationTimerUpdate()) {
throw new Error('Message is not a timer update!');
}
const conversationId = this.get('expirationTimerUpdate').source;
return ConversationController.getOrCreate(conversationId, 'private');
},
getContact() {
let conversationId = this.get('source');
if (!this.isIncoming()) {
conversationId = textsecure.storage.user.getNumber();
}
return ConversationController.getOrCreate(conversationId, 'private');
},
getModelForKeyChange() {
const id = this.get('key_changed');
if (!this.modelForKeyChange) {
const c = ConversationController.getOrCreate(id, 'private');
this.modelForKeyChange = c;
}
return this.modelForKeyChange;
},
getModelForVerifiedChange() {
const id = this.get('verifiedChanged');
if (!this.modelForVerifiedChange) {
const c = ConversationController.getOrCreate(id, 'private');
this.modelForVerifiedChange = c;
}
return this.modelForVerifiedChange;
},
isOutgoing() {
return this.get('type') === 'outgoing';
},
hasErrors() {
return _.size(this.get('errors')) > 0;
},
getStatus(number) {
const readBy = this.get('read_by') || [];
if (readBy.indexOf(number) >= 0) {
return 'read';
}
const deliveredTo = this.get('delivered_to') || [];
if (deliveredTo.indexOf(number) >= 0) {
return 'delivered';
}
const sentTo = this.get('sent_to') || [];
if (sentTo.indexOf(number) >= 0) {
return 'sent';
}
return null;
},
send(promise) {
this.trigger('pending');
return promise
.then(result => {
const now = Date.now();
this.trigger('done');
if (result.dataMessage) {
this.set({ dataMessage: result.dataMessage });
}
const sentTo = this.get('sent_to') || [];
this.save({
sent_to: _.union(sentTo, result.successfulNumbers),
sent: true,
expirationStartTimestamp: now,
});
this.sendSyncMessage();
})
.catch(result => {
const now = Date.now();
this.trigger('done');
if (result.dataMessage) {
this.set({ dataMessage: result.dataMessage });
}
let promises = [];
if (result instanceof Error) {
this.saveErrors(result);
if (result.name === 'SignedPreKeyRotationError') {
promises.push(getAccountManager().rotateSignedPreKey());
} else if (result.name === 'OutgoingIdentityKeyError') {
const c = ConversationController.get(result.number);
promises.push(c.getProfiles());
}
} else {
this.saveErrors(result.errors);
if (result.successfulNumbers.length > 0) {
const sentTo = this.get('sent_to') || [];
this.set({
sent_to: _.union(sentTo, result.successfulNumbers),
sent: true,
expirationStartTimestamp: now,
});
promises.push(this.sendSyncMessage());
}
promises = promises.concat(
_.map(result.errors, error => {
if (error.name === 'OutgoingIdentityKeyError') {
const c = ConversationController.get(error.number);
promises.push(c.getProfiles());
}
})
);
}
return Promise.all(promises).then(() => {
this.trigger('send-error', this.get('errors'));
});
});
},
someRecipientsFailed() {
const c = this.getConversation();
if (!c || c.isPrivate()) {
return false;
}
const recipients = c.contactCollection.length - 1;
const errors = this.get('errors');
if (!errors) {
return false;
}
if (errors.length > 0 && recipients > 0 && errors.length < recipients) {
return true;
}
return false;
},
sendSyncMessage() {
this.syncPromise = this.syncPromise || Promise.resolve();
this.syncPromise = this.syncPromise.then(() => {
const dataMessage = this.get('dataMessage');
if (this.get('synced') || !dataMessage) {
return Promise.resolve();
}
return textsecure.messaging
.sendSyncMessage(
dataMessage,
this.get('sent_at'),
this.get('destination'),
this.get('expirationStartTimestamp')
)
.then(() => {
this.save({ synced: true, dataMessage: null });
});
});
},
saveErrors(providedErrors) {
let errors = providedErrors;
if (!(errors instanceof Array)) {
errors = [errors];
}
errors.forEach(e => {
console.log(
'Message.saveErrors:',
e && e.reason ? e.reason : null,
e && e.stack ? e.stack : e
);
});
errors = errors.map(e => {
if (
e.constructor === Error ||
e.constructor === TypeError ||
e.constructor === ReferenceError
) {
return _.pick(e, 'name', 'message', 'code', 'number', 'reason');
}
return e;
});
errors = errors.concat(this.get('errors') || []);
return this.save({ errors });
},
hasNetworkError() {
const error = _.find(
this.get('errors'),
e =>
e.name === 'MessageError' ||
e.name === 'OutgoingMessageError' ||
e.name === 'SendMessageNetworkError' ||
e.name === 'SignedPreKeyRotationError'
);
return !!error;
},
removeOutgoingErrors(number) {
const errors = _.partition(
this.get('errors'),
e =>
e.number === number &&
(e.name === 'MessageError' ||
e.name === 'OutgoingMessageError' ||
e.name === 'SendMessageNetworkError' ||
e.name === 'SignedPreKeyRotationError' ||
e.name === 'OutgoingIdentityKeyError')
);
this.set({ errors: errors[1] });
return errors[0][0];
},
isReplayableError(e) {
return (
e.name === 'MessageError' ||
e.name === 'OutgoingMessageError' ||
e.name === 'SendMessageNetworkError' ||
e.name === 'SignedPreKeyRotationError' ||
e.name === 'OutgoingIdentityKeyError'
);
},
resend(number) {
const error = this.removeOutgoingErrors(number);
if (error) {
const promise = new textsecure.ReplayableError(error).replay();
this.send(promise);
}
},
handleDataMessage(dataMessage, confirm) {
// This function is called from the background script in a few scenarios:
// 1. on an incoming message
// 2. on a sent message sync'd from another device
// 3. in rare cases, an incoming message can be retried, though it will
// still go through one of the previous two codepaths
const message = this;
const source = message.get('source');
const type = message.get('type');
let conversationId = message.get('conversationId');
if (dataMessage.group) {
conversationId = dataMessage.group.id;
}
const GROUP_TYPES = textsecure.protobuf.GroupContext.Type;
const conversation = ConversationController.get(conversationId);
return conversation.queueJob(
() =>
new Promise(resolve => {
const now = new Date().getTime();
let attributes = { type: 'private' };
if (dataMessage.group) {
let groupUpdate = null;
attributes = {
type: 'group',
groupId: dataMessage.group.id,
};
if (dataMessage.group.type === GROUP_TYPES.UPDATE) {
attributes = {
type: 'group',
groupId: dataMessage.group.id,
name: dataMessage.group.name,
avatar: dataMessage.group.avatar,
members: _.union(
dataMessage.group.members,
conversation.get('members')
),
};
groupUpdate =
conversation.changedAttributes(
_.pick(dataMessage.group, 'name', 'avatar')
) || {};
const difference = _.difference(
attributes.members,
conversation.get('members')
);
if (difference.length > 0) {
groupUpdate.joined = difference;
}
if (conversation.get('left')) {
console.log('re-added to a left group');
attributes.left = false;
}
} else if (dataMessage.group.type === GROUP_TYPES.QUIT) {
if (source === textsecure.storage.user.getNumber()) {
attributes.left = true;
groupUpdate = { left: 'You' };
} else {
groupUpdate = { left: source };
}
attributes.members = _.without(
conversation.get('members'),
source
);
}
if (groupUpdate !== null) {
message.set({ group_update: groupUpdate });
}
}
message.set({
attachments: dataMessage.attachments,
body: dataMessage.body,
conversationId: conversation.id,
decrypted_at: now,
errors: [],
flags: dataMessage.flags,
hasAttachments: dataMessage.hasAttachments,
hasFileAttachments: dataMessage.hasFileAttachments,
hasVisualMediaAttachments: dataMessage.hasVisualMediaAttachments,
quote: dataMessage.quote,
schemaVersion: dataMessage.schemaVersion,
});
if (type === 'outgoing') {
const receipts = Whisper.DeliveryReceipts.forMessage(
conversation,
message
);
receipts.forEach(() =>
message.set({
delivered: (message.get('delivered') || 0) + 1,
})
);
}
attributes.active_at = now;
conversation.set(attributes);
if (message.isExpirationTimerUpdate()) {
message.set({
expirationTimerUpdate: {
source,
expireTimer: dataMessage.expireTimer,
},
});
conversation.set({ expireTimer: dataMessage.expireTimer });
} else if (dataMessage.expireTimer) {
message.set({ expireTimer: dataMessage.expireTimer });
}
// NOTE: Remove once the above uses
// `Conversation::updateExpirationTimer`:
const { expireTimer } = dataMessage;
const shouldLogExpireTimerChange =
message.isExpirationTimerUpdate() || expireTimer;
if (shouldLogExpireTimerChange) {
console.log("Update conversation 'expireTimer'", {
id: conversation.idForLogging(),
expireTimer,
source: 'handleDataMessage',
});
}
if (!message.isEndSession() && !message.isGroupUpdate()) {
if (dataMessage.expireTimer) {
if (
dataMessage.expireTimer !== conversation.get('expireTimer')
) {
conversation.updateExpirationTimer(
dataMessage.expireTimer,
source,
message.get('received_at')
);
}
} else if (conversation.get('expireTimer')) {
conversation.updateExpirationTimer(
null,
source,
message.get('received_at')
);
}
}
if (type === 'incoming') {
const readSync = Whisper.ReadSyncs.forMessage(message);
if (readSync) {
if (
message.get('expireTimer') &&
!message.get('expirationStartTimestamp')
) {
message.set(
'expirationStartTimestamp',
readSync.get('read_at')
);
}
}
if (readSync || message.isExpirationTimerUpdate()) {
message.unset('unread');
// This is primarily to allow the conversation to mark all older
// messages as read, as is done when we receive a read sync for
// a message we already know about.
Whisper.ReadSyncs.notifyConversation(message);
} else {
conversation.set(
'unreadCount',
conversation.get('unreadCount') + 1
);
}
}
if (type === 'outgoing') {
const reads = Whisper.ReadReceipts.forMessage(
conversation,
message
);
if (reads.length) {
const readBy = reads.map(receipt => receipt.get('reader'));
message.set({
read_by: _.union(message.get('read_by'), readBy),
});
}
message.set({ recipients: conversation.getRecipients() });
}
const conversationTimestamp = conversation.get('timestamp');
if (
!conversationTimestamp ||
message.get('sent_at') > conversationTimestamp
) {
conversation.set({
lastMessage: message.getNotificationText(),
timestamp: message.get('sent_at'),
});
}
if (dataMessage.profileKey) {
const profileKey = dataMessage.profileKey.toArrayBuffer();
if (source === textsecure.storage.user.getNumber()) {
conversation.set({ profileSharing: true });
} else if (conversation.isPrivate()) {
conversation.set({ profileKey });
} else {
ConversationController.getOrCreateAndWait(
source,
'private'
).then(sender => {
sender.setProfileKey(profileKey);
});
}
}
const handleError = error => {
const errorForLog = error && error.stack ? error.stack : error;
console.log(
'handleDataMessage',
message.idForLogging(),
'error:',
errorForLog
);
return resolve();
};
message.save().then(() => {
conversation.save().then(() => {
try {
conversation.trigger('newmessage', message);
} catch (e) {
return handleError(e);
}
// We fetch() here because, between the message.save() above and
// the previous line's trigger() call, we might have marked all
// messages unread in the database. This message might already
// be read!
const previousUnread = message.get('unread');
return message.fetch().then(
() => {
try {
if (previousUnread !== message.get('unread')) {
console.log(
'Caught race condition on new message read state! ' +
'Manually starting timers.'
);
// We call markRead() even though the message is already
// marked read because we need to start expiration
// timers, etc.
message.markRead();
}
if (message.get('unread')) {
return conversation.notify(message).then(() => {
confirm();
return resolve();
}, handleError);
}
confirm();
return resolve();
} catch (e) {
return handleError(e);
}
},
() => {
try {
console.log(
'handleDataMessage: Message',
message.idForLogging(),
'was deleted'
);
confirm();
return resolve();
} catch (e) {
return handleError(e);
}
}
);
}, handleError);
}, handleError);
})
);
},
markRead(readAt) {
this.unset('unread');
if (this.get('expireTimer') && !this.get('expirationStartTimestamp')) {
this.set('expirationStartTimestamp', readAt || Date.now());
}
Whisper.Notifications.remove(
Whisper.Notifications.where({
messageId: this.id,
})
);
return new Promise((resolve, reject) => {
this.save().then(resolve, reject);
});
},
isExpiring() {
return this.get('expireTimer') && this.get('expirationStartTimestamp');
},
isExpired() {
return this.msTilExpire() <= 0;
},
msTilExpire() {
if (!this.isExpiring()) {
return Infinity;
}
const now = Date.now();
const start = this.get('expirationStartTimestamp');
const delta = this.get('expireTimer') * 1000;
let msFromNow = start + delta - now;
if (msFromNow < 0) {
msFromNow = 0;
}
return msFromNow;
},
setToExpire() {
if (this.isExpiring() && !this.get('expires_at')) {
const start = this.get('expirationStartTimestamp');
const delta = this.get('expireTimer') * 1000;
const expiresAt = start + delta;
// This method can be called due to the expiration-related .set() calls in
// handleDataMessage(), but the .save() here would conflict with the
// same call at the end of handleDataMessage(). So we only call .save()
// here if we've previously saved this model.
if (!this.isNew()) {
this.save('expires_at', expiresAt);
}
Whisper.ExpiringMessagesListener.update();
console.log('Set message expiration', {
expiresAt,
sentAt: this.get('sent_at'),
});
}
},
});
Whisper.MessageCollection = Backbone.Collection.extend({
model: Whisper.Message,
database: Whisper.Database,
storeName: 'messages',
comparator(left, right) {
if (left.get('received_at') === right.get('received_at')) {
return (left.get('sent_at') || 0) - (right.get('sent_at') || 0);
}
return (left.get('received_at') || 0) - (right.get('received_at') || 0);
},
initialize(models, options) {
if (options) {
this.conversation = options.conversation;
}
},
destroyAll() {
return Promise.all(
this.models.map(
m =>
new Promise((resolve, reject) => {
m
.destroy()
.then(resolve)
.fail(reject);
})
)
);
},
fetchSentAt(timestamp) {
return new Promise(resolve =>
this.fetch({
index: {
// 'receipt' index on sent_at
name: 'receipt',
only: timestamp,
},
}).always(resolve)
);
},
getLoadedUnreadCount() {
return this.reduce((total, model) => {
const unread = model.get('unread') && model.isIncoming();
return total + (unread ? 1 : 0);
}, 0);
},
fetchConversation(conversationId, providedLimit, providedUnreadCount) {
let limit = providedLimit;
let unreadCount = providedUnreadCount;
if (typeof limit !== 'number') {
limit = 100;
}
if (typeof unreadCount !== 'number') {
unreadCount = 0;
}
let startingLoadedUnread = 0;
if (unreadCount > 0) {
startingLoadedUnread = this.getLoadedUnreadCount();
}
return new Promise(resolve => {
let upper;
if (this.length === 0) {
// fetch the most recent messages first
upper = Number.MAX_VALUE;
} else {
// not our first rodeo, fetch older messages.
upper = this.at(0).get('received_at');
}
const options = { remove: false, limit };
options.index = {
// 'conversation' index on [conversationId, received_at]
name: 'conversation',
lower: [conversationId],
upper: [conversationId, upper],
order: 'desc',
// SELECT messages WHERE conversationId = this.id ORDER
// received_at DESC
};
this.fetch(options).always(resolve);
}).then(() => {
if (unreadCount <= 0) {
return Promise.resolve();
}
const loadedUnread = this.getLoadedUnreadCount();
if (loadedUnread >= unreadCount) {
return Promise.resolve();
}
if (startingLoadedUnread === loadedUnread) {
// that fetch didn't get us any more unread. stop fetching more.
return Promise.resolve();
}
console.log('fetchConversation: doing another fetch to get all unread');
return this.fetchConversation(conversationId, limit, unreadCount);
});
},
fetchNextExpiring() {
this.fetch({ index: { name: 'expires_at' }, limit: 1 });
},
fetchExpired() {
console.log('Load expired messages');
this.fetch({
conditions: { expires_at: { $lte: Date.now() } },
addIndividually: true,
});
},
});
})();