/* vim: ts=4:sw=4:expandtab
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
;(function() {
'use strict';
var conversations = new Whisper.ConversationCollection();
var messages = new Whisper.MessageCollection();
if (!localStorage.getItem('first_install_ran')) {
localStorage.setItem('first_install_ran', 1);
extension.navigator.tabs.create("options.html");
}
if (textsecure.registration.isDone()) {
init();
} else {
extension.on('registration_done', init);
}
function init() {
if (!textsecure.registration.isDone()) { return; }
// initialize the socket and start listening for messages
var socket = textsecure.api.getMessageWebsocket();
new WebSocketResource(socket, function(request) {
// TODO: handle different types of requests. for now we only expect
// PUT /messages <encrypted IncomingPushMessageSignal>
textsecure.protocol.decryptWebsocketMessage(request.body).then(function(plaintext) {
var proto = textsecure.protobuf.IncomingPushMessageSignal.decode(plaintext);
// After this point, decoding errors are not the server's
// fault, and we should handle them gracefully and tell the
// user they received an invalid message
request.respond(200, 'OK');
if (proto.type === textsecure.protobuf.IncomingPushMessageSignal.Type.RECEIPT) {
onDeliveryReceipt(proto);
} else {
onMessageReceived(proto);
}
}).catch(function(e) {
console.log("Error handling incoming message:", e);
extension.trigger('error', e);
request.respond(500, 'Bad encrypted websocket message');
});
});
};
function onMessageReceived(pushMessage) {
var now = new Date().getTime();
var timestamp = pushMessage.timestamp.toNumber();
var conversation = conversations.add({
id : pushMessage.source,
type : 'private'
}, { merge : true } );
var message = messages.add({
source : pushMessage.source,
sourceDevice : pushMessage.sourceDevice,
relay : pushMessage.relay,
sent_at : timestamp,
received_at : now,
conversationId : pushMessage.source,
type : 'incoming'
});
var newUnreadCount = textsecure.storage.getUnencrypted("unreadCount", 0) + 1;
textsecure.storage.putUnencrypted("unreadCount", newUnreadCount);
extension.navigator.setBadgeText(newUnreadCount);
conversation.save().then(function() {
message.save().then(function() {
return new Promise(function(resolve) {
resolve(textsecure.protocol.handleIncomingPushMessageProto(pushMessage).then(
function(pushMessageContent) {
handlePushMessageContent(pushMessageContent, message);
}
));
}).catch(function(e) {
if (e.name === 'IncomingIdentityKeyError') {
e.args.push(message.id);
message.save({ errors : [e] }).then(function() {
extension.trigger('message', message); // notify frontend listeners
});
} else if (e.message === 'Bad MAC') {
message.save({ errors : [ _.pick(e, ['name', 'message'])]}).then(function() {
extension.trigger('message', message); // notify frontend listeners
});
} else {
console.log(e);
throw e;
}
});
});
});
};
extension.on('message:decrypted', function(options) {
var message = messages.add({id: options.message_id});
message.fetch().then(function() {
var pushMessageContent = handlePushMessageContent(
new textsecure.protobuf.PushMessageContent(options.data),
message
);
});
});
function handlePushMessageContent(pushMessageContent, message) {
// This function can be called from the background script on an
// incoming message or from the frontend after the user accepts an
// identity key change.
var source = message.get('source');
return textsecure.processDecrypted(pushMessageContent, source).then(function(pushMessageContent) {
var now = new Date().getTime();
var conversationId = pushMessageContent.group ? pushMessageContent.group.id : source;
var conversation = conversations.add({id: conversationId}, {merge: true});
var attributes = {};
conversation.fetch().fail(function() {
// this is a new conversation
if (pushMessageContent.group) {
attributes = {
type : 'group',
groupId : pushMessageContent.group.id,
name : pushMessageContent.group.name || '',
avatar : pushMessageContent.group.avatar,
members : pushMessageContent.group.members,
};
} else {
attributes = {
name : source,
type : 'private'
};
}
}).always(function() {
if (pushMessageContent.group &&
pushMessageContent.group.type === textsecure.protobuf.PushMessageContent.GroupContext.Type.UPDATE) {
attributes = {
groupId : pushMessageContent.group.id,
name : pushMessageContent.group.name,
avatar : pushMessageContent.group.avatar,
members : pushMessageContent.group.members,
};
}
attributes.active_at = now;
conversation.set(attributes);
message.set({
body : pushMessageContent.body,
conversationId : conversation.id,
attachments : pushMessageContent.attachments,
decrypted_at : now,
errors : []
});
if (message.get('sent_at') > conversation.get('timestamp')) {
conversation.set({ timestamp: message.get('sent_at'), lastMessage: message.get('body') });
}
conversation.save().then(function() {
message.save().then(function() {
extension.trigger('message', message); // notify frontend listeners
});
});
});
});
}
function onDeliveryReceipt(pushMessage) {
var timestamp = pushMessage.timestamp.toNumber();
var messages = new Whisper.MessageCollection();
var groups = new Whisper.ConversationCollection();
console.log('delivery receipt', pushMessage.source, timestamp);
messages.fetchSentAt(timestamp).then(function() {
groups.fetchGroups(pushMessage.source).then(function() {
for (var i in messages.where({type: 'outgoing'})) {
var message = messages.at(i);
var deliveries = message.get('delivered') || 0;
var conversationId = message.get('conversationId');
if (conversationId === pushMessage.source || groups.get(conversationId)) {
message.save({delivered: deliveries + 1}).then(function() {
extension.trigger('message', message); // notify frontend listeners
});
return;
// TODO: consider keeping a list of numbers we've
// successfully delivered to?
}
}
});
}).fail(function() {
console.log('got delivery receipt for unknown message', pushMessage.source, timestamp);
});
};
})();