353 lines
13 KiB
JavaScript
353 lines
13 KiB
JavaScript
/*
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* vim: ts=4:sw=4:expandtab
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*/
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(function () {
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'use strict';
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window.Whisper = window.Whisper || {};
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var Message = window.Whisper.Message = Backbone.Model.extend({
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database : Whisper.Database,
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storeName : 'messages',
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initialize: function() {
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this.on('change:attachments', this.updateImageUrl);
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this.on('destroy', this.revokeImageUrl);
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},
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defaults : function() {
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return {
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timestamp: new Date().getTime(),
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attachments: []
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};
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},
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validate: function(attributes, options) {
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var required = ['conversationId', 'received_at', 'sent_at'];
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var missing = _.filter(required, function(attr) { return !attributes[attr]; });
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if (missing.length) {
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console.log("Message missing attributes: " + missing);
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}
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},
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isEndSession: function() {
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var flag = textsecure.protobuf.DataMessage.Flags.END_SESSION;
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return !!(this.get('flags') & flag);
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},
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isGroupUpdate: function() {
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return !!(this.get('group_update'));
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},
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isIncoming: function() {
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return this.get('type') === 'incoming';
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},
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getDescription: function() {
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if (this.isGroupUpdate()) {
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var group_update = this.get('group_update');
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if (group_update.left) {
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return group_update.left + ' left the group.';
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}
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var messages = ['Updated the group.'];
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if (group_update.name) {
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messages.push("Title is now '" + group_update.name + "'.");
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}
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if (group_update.joined) {
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messages.push(group_update.joined.join(', ') + ' joined the group.');
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}
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return messages.join(' ');
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}
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if (this.isEndSession()) {
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return 'Secure session ended.';
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}
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if (this.isIncoming() && this.hasKeyConflicts()) {
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return 'Received message with unknown identity key.';
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}
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if (this.isIncoming() && this.hasErrors()) {
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return 'Error handling incoming message.';
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}
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return this.get('body');
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},
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getNotificationText: function() {
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var description = this.getDescription();
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if (description) {
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return description;
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}
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if (this.get('attachments').length > 0) {
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return 'Media message';
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}
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return '';
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},
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updateImageUrl: function() {
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this.revokeImageUrl();
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var attachment = this.get('attachments')[0];
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if (attachment) {
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var blob = new Blob([attachment.data], {
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type: attachment.contentType
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});
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this.imageUrl = URL.createObjectURL(blob);
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} else {
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this.imageUrl = null;
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}
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},
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revokeImageUrl: function() {
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if (this.imageUrl) {
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URL.revokeObjectURL(this.imageUrl);
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this.imageUrl = null;
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}
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},
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getImageUrl: function() {
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if (this.imageUrl === undefined) {
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this.updateImageUrl();
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}
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return this.imageUrl;
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},
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getContact: function() {
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var conversationId = this.get('source');
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if (!this.isIncoming()) {
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conversationId = textsecure.storage.user.getNumber();
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}
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var c = ConversationController.get(conversationId);
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if (!c) {
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c = ConversationController.create({id: conversationId});
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c.fetch();
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}
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return c;
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},
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isOutgoing: function() {
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return this.get('type') === 'outgoing';
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},
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hasErrors: function() {
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return _.size(this.get('errors')) > 0;
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},
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hasKeyConflicts: function() {
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return _.any(this.get('errors'), function(e) {
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return (e.name === 'IncomingIdentityKeyError' ||
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e.name === 'OutgoingIdentityKeyError');
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});
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},
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hasKeyConflict: function(number) {
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return _.any(this.get('errors'), function(e) {
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return (e.name === 'IncomingIdentityKeyError' ||
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e.name === 'OutgoingIdentityKeyError') &&
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e.number === number;
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});
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},
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getKeyConflict: function(number) {
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return _.find(this.get('errors'), function(e) {
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return (e.name === 'IncomingIdentityKeyError' ||
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e.name === 'OutgoingIdentityKeyError') &&
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e.number === number;
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});
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},
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send: function(promise) {
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return promise.then(function() {
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this.save({sent: true});
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}.bind(this)).catch(function(errors) {
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this.set({sent: true});
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this.saveErrors(errors);
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}.bind(this));
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},
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saveErrors: function(errors) {
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if (!(errors instanceof Array)) {
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errors = [errors];
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}
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errors.forEach(function(e) {
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console.log(e);
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console.log(e.reason, e.stack);
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});
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return this.save({
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errors : errors.map(function(e) {
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if (e.constructor === Error) {
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return _.pick(e, 'name', 'message', 'code', 'number', 'reason');
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}
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return e;
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})
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});
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},
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resend: function(number) {
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var error = this.getSendError(number);
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if (error) {
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var promise = new textsecure.ReplayableError(error).replay();
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this.send(promise);
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}
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},
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resolveConflict: function(number) {
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var error = this.getKeyConflict(number);
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if (error) {
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var promise = new textsecure.ReplayableError(error).replay();
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if (this.isIncoming()) {
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promise = promise.then(function(dataMessage) {
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this.handleDataMessage(dataMessage);
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}.bind(this));
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}
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promise.then(function() {
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this.save('errors', []);
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}.bind(this)).catch(function(e) {
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this.saveErrors(e);
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}.bind(this));
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return promise;
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}
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},
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handleDataMessage: function(dataMessage) {
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// This function can be called from the background script on an
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// incoming message or from the frontend after the user accepts an
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// identity key change.
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var message = this;
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var source = message.get('source');
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var type = message.get('type');
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var timestamp = message.get('sent_at');
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var conversationId = message.get('conversationId');
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if (dataMessage.group) {
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conversationId = dataMessage.group.id;
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}
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var conversation = ConversationController.create({id: conversationId});
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conversation.fetch().always(function() {
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var now = new Date().getTime();
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var attributes = { type: 'private' };
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if (dataMessage.group) {
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var group_update = {};
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attributes = {
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type: 'group',
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groupId: dataMessage.group.id,
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};
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if (dataMessage.group.type === textsecure.protobuf.GroupContext.Type.UPDATE) {
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attributes = {
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type : 'group',
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groupId : dataMessage.group.id,
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name : dataMessage.group.name,
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avatar : dataMessage.group.avatar,
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members : dataMessage.group.members,
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};
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group_update = conversation.changedAttributes(_.pick(dataMessage.group, 'name', 'avatar')) || {};
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var difference = _.difference(dataMessage.group.members, conversation.get('members'));
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if (difference.length > 0) {
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group_update.joined = difference;
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}
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}
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else if (dataMessage.group.type === textsecure.protobuf.GroupContext.Type.QUIT) {
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group_update = { left: source };
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attributes.members = _.without(conversation.get('members'), source);
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}
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if (_.keys(group_update).length > 0) {
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message.set({group_update: group_update});
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}
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}
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if (type === 'outgoing') {
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// lazy hack - check for receipts that arrived early.
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if (dataMessage.group && dataMessage.group.id) { // group sync
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var members = conversation.get('members') || [];
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var receipts = window.receipts.where({ timestamp: timestamp });
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for (var i in receipts) {
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if (members.indexOf(receipts[i].get('source')) > -1) {
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window.receipts.remove(receipts[i]);
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message.set({
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delivered: (message.get('delivered') || 0) + 1
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});
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}
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}
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} else {
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var receipt = window.receipts.findWhere({
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timestamp: timestamp,
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source: conversationId
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});
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if (receipt) {
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window.receipts.remove(receipt);
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message.set({
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delivered: (message.get('delivered') || 0) + 1
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});
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}
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}
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}
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attributes.active_at = now;
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if (type === 'incoming') {
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attributes.unreadCount = conversation.get('unreadCount') + 1;
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}
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conversation.set(attributes);
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message.set({
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body : dataMessage.body,
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conversationId : conversation.id,
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attachments : dataMessage.attachments,
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decrypted_at : now,
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flags : dataMessage.flags,
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errors : []
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});
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var conversation_timestamp = conversation.get('timestamp');
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if (!conversation_timestamp || message.get('sent_at') > conversation_timestamp) {
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conversation.set({
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timestamp: message.get('sent_at'),
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lastMessage: message.get('body')
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});
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}
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else if (!conversation.get('lastMessage')) {
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conversation.set({
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lastMessage: message.get('body')
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});
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}
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conversation.save().then(function() {
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message.save().then(function() {
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if (message.isIncoming()) {
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notifyConversation(message);
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} else {
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conversation.trigger('newmessages');
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}
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});
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});
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});
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}
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});
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Whisper.MessageCollection = Backbone.Collection.extend({
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model : Message,
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database : Whisper.Database,
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storeName : 'messages',
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comparator : 'received_at',
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initialize : function(models, options) {
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if (options) {
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this.conversation = options.conversation;
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}
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},
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destroyAll : function () {
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return Promise.all(this.models.map(function(m) {
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return new Promise(function(resolve, reject) {
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m.destroy().then(resolve).fail(reject);
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});
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}));
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},
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fetchSentAt: function(timestamp) {
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return this.fetch({
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index: {
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// 'receipt' index on sent_at
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name: 'receipt',
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only: timestamp
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}
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});
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},
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fetchConversation: function(conversationId) {
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var options = {remove: false};
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options.index = {
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// 'conversation' index on [conversationId, received_at]
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name : 'conversation',
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lower : [conversationId],
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upper : [conversationId, Number.MAX_VALUE]
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// SELECT messages WHERE conversationId = this.id ORDER
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// received_at DESC
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};
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// TODO pagination/infinite scroll
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// limit: 10, offset: page*10,
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return this.fetch(options);
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},
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hasKeyConflicts: function() {
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return this.any(function(m) { return m.hasKeyConflicts(); });
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}
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});
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})();
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