/*
* vim: ts=4:sw=4:expandtab
*/
;(function () {
'use strict';
window.textsecure = window.textsecure || {};
var ARCHIVE_AGE = 7 * 24 * 60 * 60 * 1000;
function AccountManager(url, username, password) {
this.server = new TextSecureServer(url, username, password);
this.pending = Promise.resolve();
}
function getNumber(numberId) {
if (!numberId || !numberId.length) {
return numberId;
}
var parts = numberId.split('.');
if (!parts.length) {
return numberId;
}
return parts[0];
}
AccountManager.prototype = new textsecure.EventTarget();
AccountManager.prototype.extend({
constructor: AccountManager,
requestVoiceVerification: function(number) {
return this.server.requestVerificationVoice(number);
},
requestSMSVerification: function(number) {
return this.server.requestVerificationSMS(number);
},
registerSingleDevice: function(number, verificationCode) {
var registerKeys = this.server.registerKeys.bind(this.server);
var createAccount = this.createAccount.bind(this);
var clearSessionsAndPreKeys = this.clearSessionsAndPreKeys.bind(this);
var generateKeys = this.generateKeys.bind(this, 100);
var confirmKeys = this.confirmKeys.bind(this);
var registrationDone = this.registrationDone.bind(this);
return this.queueTask(function() {
return libsignal.KeyHelper.generateIdentityKeyPair().then(function(identityKeyPair) {
var profileKey = textsecure.crypto.getRandomBytes(32);
return createAccount(number, verificationCode, identityKeyPair, profileKey)
.then(clearSessionsAndPreKeys)
.then(generateKeys)
.then(function(keys) {
return registerKeys(keys).then(function() {
return confirmKeys(keys);
});
})
.then(registrationDone);
});
});
},
registerSecondDevice: function(setProvisioningUrl, confirmNumber, progressCallback) {
var createAccount = this.createAccount.bind(this);
var clearSessionsAndPreKeys = this.clearSessionsAndPreKeys.bind(this);
var generateKeys = this.generateKeys.bind(this, 100, progressCallback);
var confirmKeys = this.confirmKeys.bind(this);
var registrationDone = this.registrationDone.bind(this);
var registerKeys = this.server.registerKeys.bind(this.server);
var getSocket = this.server.getProvisioningSocket.bind(this.server);
var queueTask = this.queueTask.bind(this);
var provisioningCipher = new libsignal.ProvisioningCipher();
var gotProvisionEnvelope = false;
return provisioningCipher.getPublicKey().then(function(pubKey) {
return new Promise(function(resolve, reject) {
var socket = getSocket();
socket.onclose = function(e) {
console.log('provisioning socket closed', e.code);
if (!gotProvisionEnvelope) {
reject(new Error('websocket closed'));
}
};
socket.onopen = function(e) {
console.log('provisioning socket open');
};
var wsr = new WebSocketResource(socket, {
keepalive: { path: '/v1/keepalive/provisioning' },
handleRequest: function(request) {
if (request.path === "/v1/address" && request.verb === "PUT") {
var proto = textsecure.protobuf.ProvisioningUuid.decode(request.body);
setProvisioningUrl([
'tsdevice:/?uuid=', proto.uuid, '&pub_key=',
encodeURIComponent(btoa(getString(pubKey)))
].join(''));
request.respond(200, 'OK');
} else if (request.path === "/v1/message" && request.verb === "PUT") {
var envelope = textsecure.protobuf.ProvisionEnvelope.decode(request.body, 'binary');
request.respond(200, 'OK');
gotProvisionEnvelope = true;
wsr.close();
resolve(provisioningCipher.decrypt(envelope).then(function(provisionMessage) {
return queueTask(function() {
return confirmNumber(provisionMessage.number).then(function(deviceName) {
if (typeof deviceName !== 'string' || deviceName.length === 0) {
throw new Error('Invalid device name');
}
return createAccount(
provisionMessage.number,
provisionMessage.provisioningCode,
provisionMessage.identityKeyPair,
provisionMessage.profileKey,
deviceName,
provisionMessage.userAgent,
provisionMessage.readReceipts
)
.then(clearSessionsAndPreKeys)
.then(generateKeys)
.then(function(keys) {
return registerKeys(keys).then(function() {
return confirmKeys(keys);
});
})
.then(registrationDone);
});
});
}));
} else {
console.log('Unknown websocket message', request.path);
}
}
});
});
});
},
refreshPreKeys: function() {
var generateKeys = this.generateKeys.bind(this, 100);
var registerKeys = this.server.registerKeys.bind(this.server);
return this.queueTask(function() {
return this.server.getMyKeys().then(function(preKeyCount) {
console.log('prekey count ' + preKeyCount);
if (preKeyCount < 10) {
return generateKeys().then(registerKeys);
}
});
}.bind(this));
},
rotateSignedPreKey: function() {
return this.queueTask(function() {
var signedKeyId = textsecure.storage.get('signedKeyId', 1);
if (typeof signedKeyId != 'number') {
throw new Error('Invalid signedKeyId');
}
var store = textsecure.storage.protocol;
var server = this.server;
var cleanSignedPreKeys = this.cleanSignedPreKeys;
// TODO: harden this against missing identity key? Otherwise, we get
// retries every five seconds.
return store.getIdentityKeyPair().then(function(identityKey) {
return libsignal.KeyHelper.generateSignedPreKey(identityKey, signedKeyId);
}, function(error) {
console.log('Failed to get identity key. Canceling key rotation.');
}).then(function(res) {
if (!res) {
return;
}
console.log('Saving new signed prekey', res.keyId);
return Promise.all([
textsecure.storage.put('signedKeyId', signedKeyId + 1),
store.storeSignedPreKey(res.keyId, res.keyPair),
server.setSignedPreKey({
keyId : res.keyId,
publicKey : res.keyPair.pubKey,
signature : res.signature
}),
]).then(function() {
var confirmed = true;
console.log('Confirming new signed prekey', res.keyId);
return Promise.all([
textsecure.storage.remove('signedKeyRotationRejected'),
store.storeSignedPreKey(res.keyId, res.keyPair, confirmed),
]);
}).then(function() {
return cleanSignedPreKeys();
});
}).catch(function(e) {
console.log(
'rotateSignedPrekey error:',
e && e.stack ? e.stack : e
);
if (e instanceof Error && e.name == 'HTTPError' && e.code >= 400 && e.code <= 599) {
var rejections = 1 + textsecure.storage.get('signedKeyRotationRejected', 0);
textsecure.storage.put('signedKeyRotationRejected', rejections);
console.log('Signed key rotation rejected count:', rejections);
} else {
throw e;
}
});
}.bind(this));
},
queueTask: function(task) {
var taskWithTimeout = textsecure.createTaskWithTimeout(task);
return this.pending = this.pending.then(taskWithTimeout, taskWithTimeout);
},
cleanSignedPreKeys: function() {
var MINIMUM_KEYS = 3;
var store = textsecure.storage.protocol;
return store.loadSignedPreKeys().then(function(allKeys) {
allKeys.sort(function(a, b) {
return (a.created_at || 0) - (b.created_at || 0);
});
allKeys.reverse(); // we want the most recent first
var confirmed = allKeys.filter(function(key) {
return key.confirmed;
});
var unconfirmed = allKeys.filter(function(key) {
return !key.confirmed;
});
var recent = allKeys[0] ? allKeys[0].keyId : 'none';
var recentConfirmed = confirmed[0] ? confirmed[0].keyId : 'none';
console.log('Most recent signed key: ' + recent);
console.log('Most recent confirmed signed key: ' + recentConfirmed);
console.log(
'Total signed key count:',
allKeys.length,
'-',
confirmed.length,
'confirmed'
);
var confirmedCount = confirmed.length;
// Keep MINIMUM_KEYS confirmed keys, then drop if older than a week
confirmed = confirmed.forEach(function(key, index) {
if (index < MINIMUM_KEYS) {
return;
}
var created_at = key.created_at || 0;
var age = Date.now() - created_at;
if (age > ARCHIVE_AGE) {
console.log(
'Removing confirmed signed prekey:',
key.keyId,
'with timestamp:',
created_at
);
store.removeSignedPreKey(key.keyId);
confirmedCount--;
}
});
var stillNeeded = MINIMUM_KEYS - confirmedCount;
// If we still don't have enough total keys, we keep as many unconfirmed
// keys as necessary. If not necessary, and over a week old, we drop.
unconfirmed.forEach(function(key, index) {
if (index < stillNeeded) {
return;
}
var created_at = key.created_at || 0;
var age = Date.now() - created_at;
if (age > ARCHIVE_AGE) {
console.log(
'Removing unconfirmed signed prekey:',
key.keyId,
'with timestamp:',
created_at
);
store.removeSignedPreKey(key.keyId);
}
});
});
},
createAccount: function(number, verificationCode, identityKeyPair,
profileKey, deviceName, userAgent, readReceipts) {
var signalingKey = libsignal.crypto.getRandomBytes(32 + 20);
var password = btoa(getString(libsignal.crypto.getRandomBytes(16)));
password = password.substring(0, password.length - 2);
var registrationId = libsignal.KeyHelper.generateRegistrationId();
var previousNumber = getNumber(textsecure.storage.get('number_id'));
return this.server.confirmCode(
number, verificationCode, password, signalingKey, registrationId, deviceName
).then(function(response) {
if (previousNumber && previousNumber !== number) {
console.log('New number is different from old number; deleting all previous data');
return textsecure.storage.protocol.removeAllData().then(function() {
console.log('Successfully deleted previous data');
return response;
}, function(error) {
console.log(
'Something went wrong deleting data from previous number',
error && error.stack ? error.stack : error
);
return response;
});
}
return response;
}).then(function(response) {
textsecure.storage.remove('identityKey');
textsecure.storage.remove('signaling_key');
textsecure.storage.remove('password');
textsecure.storage.remove('registrationId');
textsecure.storage.remove('number_id');
textsecure.storage.remove('device_name');
textsecure.storage.remove('regionCode');
textsecure.storage.remove('userAgent');
textsecure.storage.remove('profileKey');
textsecure.storage.remove('read-receipts-setting');
// update our own identity key, which may have changed
// if we're relinking after a reinstall on the master device
textsecure.storage.protocol.saveIdentityWithAttributes(number, {
id : number,
publicKey : identityKeyPair.pubKey,
firstUse : true,
timestamp : Date.now(),
verified : textsecure.storage.protocol.VerifiedStatus.VERIFIED,
nonblockingApproval : true
});
textsecure.storage.put('identityKey', identityKeyPair);
textsecure.storage.put('signaling_key', signalingKey);
textsecure.storage.put('password', password);
textsecure.storage.put('registrationId', registrationId);
if (profileKey) {
textsecure.storage.put('profileKey', profileKey);
}
if (userAgent) {
textsecure.storage.put('userAgent', userAgent);
}
if (readReceipts) {
textsecure.storage.put('read-receipt-setting', true);
} else {
textsecure.storage.put('read-receipt-setting', false);
}
textsecure.storage.user.setNumberAndDeviceId(number, response.deviceId || 1, deviceName);
textsecure.storage.put('regionCode', libphonenumber.util.getRegionCodeForNumber(number));
this.server.username = textsecure.storage.get('number_id');
}.bind(this));
},
clearSessionsAndPreKeys: function() {
var store = textsecure.storage.protocol;
console.log('clearing all sessions, prekeys, and signed prekeys');
return Promise.all([
store.clearPreKeyStore(),
store.clearSignedPreKeysStore(),
store.clearSessionStore(),
]);
},
// Takes the same object returned by generateKeys
confirmKeys: function(keys) {
var store = textsecure.storage.protocol;
var key = keys.signedPreKey;
var confirmed = true;
console.log('confirmKeys: confirming key', key.keyId);
return store.storeSignedPreKey(key.keyId, key.keyPair, confirmed);
},
generateKeys: function (count, progressCallback) {
if (typeof progressCallback !== 'function') {
progressCallback = undefined;
}
var startId = textsecure.storage.get('maxPreKeyId', 1);
var signedKeyId = textsecure.storage.get('signedKeyId', 1);
if (typeof startId != 'number') {
throw new Error('Invalid maxPreKeyId');
}
if (typeof signedKeyId != 'number') {
throw new Error('Invalid signedKeyId');
}
var store = textsecure.storage.protocol;
return store.getIdentityKeyPair().then(function(identityKey) {
var result = { preKeys: [], identityKey: identityKey.pubKey };
var promises = [];
for (var keyId = startId; keyId < startId+count; ++keyId) {
promises.push(
libsignal.KeyHelper.generatePreKey(keyId).then(function(res) {
store.storePreKey(res.keyId, res.keyPair);
result.preKeys.push({
keyId : res.keyId,
publicKey : res.keyPair.pubKey
});
if (progressCallback) { progressCallback(); }
})
);
}
promises.push(
libsignal.KeyHelper.generateSignedPreKey(identityKey, signedKeyId).then(function(res) {
store.storeSignedPreKey(res.keyId, res.keyPair);
result.signedPreKey = {
keyId : res.keyId,
publicKey : res.keyPair.pubKey,
signature : res.signature,
// server.registerKeys doesn't use keyPair, confirmKeys does
keyPair : res.keyPair,
};
})
);
textsecure.storage.put('maxPreKeyId', startId + count);
textsecure.storage.put('signedKeyId', signedKeyId + 1);
return Promise.all(promises).then(function() {
// This is primarily for the signed prekey summary it logs out
return this.cleanSignedPreKeys().then(function() {
return result;
});
}.bind(this));
}.bind(this));
},
registrationDone: function() {
console.log('registration done');
this.dispatchEvent(new Event('registration'));
}
});
textsecure.AccountManager = AccountManager;
}());