Cable-Desktop/libtextsecure/sendmessage.js
2015-01-19 10:04:11 -10:00

433 lines
19 KiB
JavaScript

/* 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/>.
*/
// sendMessage(numbers = [], message = PushMessageContentProto, callback(success/failure map))
window.textsecure.messaging = function() {
'use strict';
var self = {};
function getKeysForNumber(number, updateDevices) {
var handleResult = function(response) {
for (var i in response.devices) {
if (updateDevices === undefined || updateDevices.indexOf(response.devices[i].deviceId) > -1)
textsecure.storage.devices.saveKeysToDeviceObject({
encodedNumber: number + "." + response.devices[i].deviceId,
identityKey: response.identityKey,
preKey: response.devices[i].preKey.publicKey,
preKeyId: response.devices[i].preKey.keyId,
signedKey: response.devices[i].signedPreKey.publicKey,
signedKeyId: response.devices[i].signedPreKey.keyId,
registrationId: response.devices[i].registrationId
});
}
};
var promises = [];
if (updateDevices !== undefined)
for (var i in updateDevices)
promises[promises.length] = textsecure.api.getKeysForNumber(number, updateDevices[i]).then(handleResult);
else
return textsecure.api.getKeysForNumber(number).then(handleResult);
return Promise.all(promises);
}
// success_callback(server success/failure map), error_callback(error_msg)
// message == PushMessageContentProto (NOT STRING)
function sendMessageToDevices(timestamp, number, deviceObjectList, message, success_callback, error_callback) {
var jsonData = [];
var relay = undefined;
var promises = [];
var addEncryptionFor = function(i) {
if (deviceObjectList[i].relay !== undefined) {
if (relay === undefined)
relay = deviceObjectList[i].relay;
else if (relay != deviceObjectList[i].relay)
return new Promise(function() { throw new Error("Mismatched relays for number " + number); });
} else {
if (relay === undefined)
relay = "";
else if (relay != "")
return new Promise(function() { throw new Error("Mismatched relays for number " + number); });
}
return textsecure.protocol.encryptMessageFor(deviceObjectList[i], message).then(function(encryptedMsg) {
jsonData[i] = {
type: encryptedMsg.type,
destinationDeviceId: textsecure.utils.unencodeNumber(deviceObjectList[i].encodedNumber)[1],
destinationRegistrationId: deviceObjectList[i].registrationId,
body: encryptedMsg.body,
timestamp: timestamp
};
if (deviceObjectList[i].relay !== undefined)
jsonData[i].relay = deviceObjectList[i].relay;
});
}
for (var i = 0; i < deviceObjectList.length; i++)
promises[i] = addEncryptionFor(i);
return Promise.all(promises).then(function() {
return textsecure.api.sendMessages(number, jsonData);
});
}
var makeAttachmentPointer;
var refreshGroup = function(number, groupId, devicesForNumber) {
groupId = getString(groupId);
var doUpdate = false;
for (var i in devicesForNumber) {
if (textsecure.storage.groups.needUpdateByDeviceRegistrationId(groupId, number, devicesForNumber[i].encodedNumber, devicesForNumber[i].registrationId))
doUpdate = true;
}
if (!doUpdate)
return Promise.resolve(true);
var group = textsecure.storage.groups.getGroup(groupId);
var numberIndex = group.numbers.indexOf(number);
if (numberIndex < 0) // This is potentially a multi-message rare racing-AJAX race
return Promise.reject("Tried to refresh group to non-member");
var proto = new textsecure.protobuf.PushMessageContent();
proto.group = new textsecure.protobuf.PushMessageContent.GroupContext();
proto.group.id = toArrayBuffer(group.id);
proto.group.type = textsecure.protobuf.PushMessageContent.GroupContext.Type.UPDATE;
proto.group.members = group.numbers;
proto.group.name = group.name === undefined ? null : group.name;
if (group.avatar !== undefined) {
return makeAttachmentPointer(group.avatar).then(function(attachment) {
proto.group.avatar = attachment;
return sendMessageToDevices(Date.now(), number, devicesForNumber, proto);
});
} else {
return sendMessageToDevices(Date.now(), number, devicesForNumber, proto);
}
}
var tryMessageAgain = function(number, encodedMessage, message_id) {
var message = new Whisper.MessageCollection().add({id: message_id});
message.fetch().then(function() {
textsecure.storage.removeEncrypted("devices" + number);
var proto = textsecure.protobuf.PushMessageContent.decode(encodedMessage, 'binary');
sendMessageProto(message.get('sent_at'), [number], proto, function(res) {
if (res.failure.length > 0)
message.set('errors', res.failure);
else
message.set('errors', []);
message.save().then(function(){
extension.trigger('message', message); // notify frontend listeners
});
});
});
};
textsecure.replay.registerFunction(tryMessageAgain, textsecure.replay.Type.SEND_MESSAGE);
var sendMessageProto = function(timestamp, numbers, message, callback) {
var numbersCompleted = 0;
var errors = [];
var successfulNumbers = [];
var numberCompleted = function() {
numbersCompleted++;
if (numbersCompleted >= numbers.length)
callback({success: successfulNumbers, failure: errors});
}
var registerError = function(number, message, error) {
if (error) {
if (error.humanError)
message = error.humanError;
} else
error = new Error(message);
errors[errors.length] = { number: number, reason: message, error: error };
numberCompleted();
}
var doSendMessage;
var reloadDevicesAndSend = function(number, recurse) {
return function() {
var devicesForNumber = textsecure.storage.devices.getDeviceObjectsForNumber(number);
if (devicesForNumber.length == 0)
return registerError(number, "Got empty device list when loading device keys", null);
doSendMessage(number, devicesForNumber, recurse);
}
}
doSendMessage = function(number, devicesForNumber, recurse) {
var groupUpdate = Promise.resolve(true);
if (message.group && message.group.id)
groupUpdate = refreshGroup(number, message.group.id, devicesForNumber);
return groupUpdate.then(function() {
return sendMessageToDevices(timestamp, number, devicesForNumber, message).then(function(result) {
successfulNumbers[successfulNumbers.length] = number;
numberCompleted();
});
}).catch(function(error) {
if (error instanceof Error && error.name == "HTTPError" && (error.message == 410 || error.message == 409)) {
if (!recurse)
return registerError(number, "Hit retry limit attempting to reload device list", error);
if (error.message == 409)
textsecure.storage.devices.removeDeviceIdsForNumber(number, error.response.extraDevices);
var resetDevices = ((error.message == 410) ? error.response.staleDevices : error.response.missingDevices);
getKeysForNumber(number, resetDevices)
.then(reloadDevicesAndSend(number, false))
.catch(function(error) {
if (error.message !== "Identity key changed")
registerError(number, "Failed to reload device keys", error);
else {
error = new textsecure.OutgoingIdentityKeyError(number, getString(message.encode()));
registerError(number, "Identity key changed", error);
}
});
} else
registerError(number, "Failed to create or send message", error);
});
}
var getDevicesAndSendToNumber = function(number) {
var devicesForNumber = textsecure.storage.devices.getDeviceObjectsForNumber(number);
var promises = [];
for (var j in devicesForNumber)
if (devicesForNumber[j].registrationId === undefined)
promises[promises.length] = getKeysForNumber(number, [parseInt(textsecure.utils.unencodeNumber(devicesForNumber[j].encodedNumber)[1])]);
Promise.all(promises).then(function() {
devicesForNumber = textsecure.storage.devices.getDeviceObjectsForNumber(number);
if (devicesForNumber.length == 0) {
getKeysForNumber(number)
.then(reloadDevicesAndSend(number, true))
.catch(function(error) {
registerError(number, "Failed to retreive new device keys for number " + number, error);
});
} else
doSendMessage(number, devicesForNumber, true);
});
}
for (var i in numbers)
getDevicesAndSendToNumber(numbers[i]);
}
makeAttachmentPointer = function(attachment) {
var proto = new textsecure.protobuf.PushMessageContent.AttachmentPointer();
proto.key = textsecure.crypto.getRandomBytes(64);
var iv = textsecure.crypto.getRandomBytes(16);
return textsecure.protocol.encryptAttachment(attachment.data, proto.key, iv).then(function(encryptedBin) {
return textsecure.api.putAttachment(encryptedBin).then(function(id) {
proto.id = id;
proto.contentType = attachment.contentType;
return proto;
});
});
}
var sendIndividualProto = function(number, proto, timestamp) {
return new Promise(function(resolve, reject) {
sendMessageProto(timestamp, [number], proto, function(res) {
if (res.failure.length > 0)
reject(res.failure);
else
resolve();
});
});
}
var sendGroupProto = function(numbers, proto, timestamp) {
timestamp = timestamp || Date.now();
var me = textsecure.utils.unencodeNumber(textsecure.storage.getUnencrypted("number_id"))[0];
numbers = numbers.filter(function(number) { return number != me; });
return new Promise(function(resolve, reject) {
sendMessageProto(timestamp, numbers, proto, function(res) {
if (res.failure.length > 0)
reject(res.failure);
else
resolve();
});
});
}
self.sendMessageToNumber = function(number, messageText, attachments, timestamp) {
var proto = new textsecure.protobuf.PushMessageContent();
proto.body = messageText;
var promises = [];
for (var i in attachments)
promises.push(makeAttachmentPointer(attachments[i]));
return Promise.all(promises).then(function(attachmentsArray) {
proto.attachments = attachmentsArray;
return sendIndividualProto(number, proto, timestamp);
});
}
self.closeSession = function(number) {
var proto = new textsecure.protobuf.PushMessageContent();
proto.body = "TERMINATE";
proto.flags = textsecure.protobuf.PushMessageContent.Flags.END_SESSION;
return sendIndividualProto(number, proto).then(function(res) {
var devices = textsecure.storage.devices.getDeviceObjectsForNumber(number);
for (var i in devices)
textsecure.protocol.closeOpenSessionForDevice(devices[i].encodedNumber);
return res;
});
}
self.sendMessageToGroup = function(groupId, messageText, attachments, timestamp) {
var proto = new textsecure.protobuf.PushMessageContent();
proto.body = messageText;
proto.group = new textsecure.protobuf.PushMessageContent.GroupContext();
proto.group.id = toArrayBuffer(groupId);
proto.group.type = textsecure.protobuf.PushMessageContent.GroupContext.Type.DELIVER;
var numbers = textsecure.storage.groups.getNumbers(groupId);
if (numbers === undefined)
return new Promise(function(resolve, reject) { reject(new Error("Unknown Group")); });
var promises = [];
for (var i in attachments)
promises.push(makeAttachmentPointer(attachments[i]));
return Promise.all(promises).then(function(attachmentsArray) {
proto.attachments = attachmentsArray;
return sendGroupProto(numbers, proto, timestamp);
});
}
self.createGroup = function(numbers, name, avatar) {
var proto = new textsecure.protobuf.PushMessageContent();
proto.group = new textsecure.protobuf.PushMessageContent.GroupContext();
var group = textsecure.storage.groups.createNewGroup(numbers);
proto.group.id = toArrayBuffer(group.id);
var numbers = group.numbers;
proto.group.type = textsecure.protobuf.PushMessageContent.GroupContext.Type.UPDATE;
proto.group.members = numbers;
proto.group.name = name;
if (avatar !== undefined) {
return makeAttachmentPointer(avatar).then(function(attachment) {
proto.group.avatar = attachment;
return sendGroupProto(numbers, proto).then(function() {
return proto.group.id;
});
});
} else {
return sendGroupProto(numbers, proto).then(function() {
return proto.group.id;
});
}
}
self.updateGroup = function(groupId, name, avatar, numbers) {
var proto = new textsecure.protobuf.PushMessageContent();
proto.group = new textsecure.protobuf.PushMessageContent.GroupContext();
proto.group.id = toArrayBuffer(groupId);
proto.group.type = textsecure.protobuf.PushMessageContent.GroupContext.Type.UPDATE;
proto.group.name = name;
var numbers = textsecure.storage.groups.addNumbers(groupId, numbers);
if (numbers === undefined) {
return new Promise(function(resolve, reject) { reject(new Error("Unknown Group")); });
}
proto.group.members = numbers;
if (avatar !== undefined) {
return makeAttachmentPointer(avatar).then(function(attachment) {
proto.group.avatar = attachment;
return sendGroupProto(numbers, proto).then(function() {
return proto.group.id;
});
});
} else {
return sendGroupProto(numbers, proto).then(function() {
return proto.group.id;
});
}
}
self.addNumberToGroup = function(groupId, number) {
var proto = new textsecure.protobuf.PushMessageContent();
proto.group = new textsecure.protobuf.PushMessageContent.GroupContext();
proto.group.id = toArrayBuffer(groupId);
proto.group.type = textsecure.protobuf.PushMessageContent.GroupContext.Type.UPDATE;
var numbers = textsecure.storage.groups.addNumbers(groupId, [number]);
if (numbers === undefined)
return new Promise(function(resolve, reject) { reject(new Error("Unknown Group")); });
proto.group.members = numbers;
return sendGroupProto(numbers, proto);
}
self.setGroupName = function(groupId, name) {
var proto = new textsecure.protobuf.PushMessageContent();
proto.group = new textsecure.protobuf.PushMessageContent.GroupContext();
proto.group.id = toArrayBuffer(groupId);
proto.group.type = textsecure.protobuf.PushMessageContent.GroupContext.Type.UPDATE;
proto.group.name = name;
var numbers = textsecure.storage.groups.getNumbers(groupId);
if (numbers === undefined)
return new Promise(function(resolve, reject) { reject(new Error("Unknown Group")); });
proto.group.members = numbers;
return sendGroupProto(numbers, proto);
}
self.setGroupAvatar = function(groupId, avatar) {
var proto = new textsecure.protobuf.PushMessageContent();
proto.group = new textsecure.protobuf.PushMessageContent.GroupContext();
proto.group.id = toArrayBuffer(groupId);
proto.group.type = textsecure.protobuf.PushMessageContent.GroupContext.Type.UPDATE;
var numbers = textsecure.storage.groups.getNumbers(groupId);
if (numbers === undefined)
return new Promise(function(resolve, reject) { reject(new Error("Unknown Group")); });
proto.group.members = numbers;
return makeAttachmentPointer(avatar).then(function(attachment) {
proto.group.avatar = attachment;
return sendGroupProto(numbers, proto);
});
}
self.leaveGroup = function(groupId) {
var proto = new textsecure.protobuf.PushMessageContent();
proto.group = new textsecure.protobuf.PushMessageContent.GroupContext();
proto.group.id = toArrayBuffer(groupId);
proto.group.type = textsecure.protobuf.PushMessageContent.GroupContext.Type.QUIT;
var numbers = textsecure.storage.groups.getNumbers(groupId);
if (numbers === undefined)
return new Promise(function(resolve, reject) { reject(new Error("Unknown Group")); });
textsecure.storage.groups.deleteGroup(groupId);
return sendGroupProto(numbers, proto);
}
return self;
}();