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<!DOCTYPE html>
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<head>
<meta charset="utf-8">
<title>JSDoc: Source: jsxc.lib.otr.js</title>
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<h1 class="page-title">Source: jsxc.lib.otr.js</h1>
<section>
<article>
<pre class="prettyprint source"><code>/**
* @namespace jsxc.otr
*/
jsxc.otr = {
/** list of otr objects */
objects: {},
dsaFallback: null,
/**
* Handler for otr receive event
*
* @memberOf jsxc.otr
* @param {Object} d
* @param {string} d.bid
* @param {string} d.msg received message
* @param {boolean} d.encrypted True, if msg was encrypted.
* @param {boolean} d.forwarded
* @param {string} d.stamp timestamp
*/
receiveMessage: function(d) {
var bid = d.bid;
if (jsxc.otr.objects[bid].msgstate !== OTR.CONST.MSGSTATE_PLAINTEXT) {
jsxc.otr.backup(bid);
}
if (jsxc.otr.objects[bid].msgstate !== OTR.CONST.MSGSTATE_PLAINTEXT && !d.encrypted) {
jsxc.gui.window.postMessage({
bid: bid,
direction: jsxc.Message.SYS,
msg: $.t('Received_an_unencrypted_message') + '. [' + d.msg + ']',
encrypted: d.encrypted,
forwarded: d.forwarded,
stamp: d.stamp
});
} else {
jsxc.gui.window.postMessage({
bid: bid,
direction: jsxc.Message.IN,
msg: d.msg,
encrypted: d.encrypted,
forwarded: d.forwarded,
stamp: d.stamp
});
}
},
/**
* Handler for otr send event
*
* @param {string} jid
* @param {string} msg message to be send
*/
sendMessage: function(jid, msg, uid) {
if (jsxc.otr.objects[jsxc.jidToBid(jid)].msgstate !== 0) {
jsxc.otr.backup(jsxc.jidToBid(jid));
}
jsxc.xmpp._sendMessage(jid, msg, uid);
},
/**
* Create new otr instance
*
* @param {type} bid
* @returns {undefined}
*/
create: function(bid) {
if (jsxc.otr.objects.hasOwnProperty(bid)) {
return;
}
if (!jsxc.options.otr.priv) {
return;
}
// save list of otr objects
var ol = jsxc.storage.getUserItem('otrlist') || [];
if (ol.indexOf(bid) < 0) {
ol.push(bid);
jsxc.storage.setUserItem('otrlist', ol);
}
jsxc.otr.objects[bid] = new OTR(jsxc.options.otr);
if (jsxc.options.otr.SEND_WHITESPACE_TAG) {
jsxc.otr.objects[bid].SEND_WHITESPACE_TAG = true;
}
if (jsxc.options.otr.WHITESPACE_START_AKE) {
jsxc.otr.objects[bid].WHITESPACE_START_AKE = true;
}
jsxc.otr.objects[bid].on('status', function(status) {
var data = jsxc.storage.getUserItem('buddy', bid);
if (data === null) {
return;
}
switch (status) {
case OTR.CONST.STATUS_SEND_QUERY:
jsxc.gui.window.postMessage({
bid: bid,
direction: jsxc.Message.SYS,
msg: $.t('trying_to_start_private_conversation')
});
break;
case OTR.CONST.STATUS_AKE_SUCCESS:
data.fingerprint = jsxc.otr.objects[bid].their_priv_pk.fingerprint();
data.msgstate = OTR.CONST.MSGSTATE_ENCRYPTED;
var msg_state = jsxc.otr.objects[bid].trust ? 'Verified' : 'Unverified';
var msg = $.t(msg_state + '_private_conversation_started');
jsxc.gui.window.postMessage({
bid: bid,
direction: 'sys',
msg: msg
});
break;
case OTR.CONST.STATUS_END_OTR:
data.fingerprint = null;
if (jsxc.otr.objects[bid].msgstate === OTR.CONST.MSGSTATE_PLAINTEXT) {
// we abort the private conversation
data.msgstate = OTR.CONST.MSGSTATE_PLAINTEXT;
jsxc.gui.window.postMessage({
bid: bid,
direction: jsxc.Message.SYS,
msg: $.t('private_conversation_aborted')
});
} else {
// the buddy abort the private conversation
data.msgstate = OTR.CONST.MSGSTATE_FINISHED;
jsxc.gui.window.postMessage({
bid: bid,
direction: jsxc.Message.SYS,
msg: $.t('your_buddy_closed_the_private_conversation_you_should_do_the_same')
});
}
break;
case OTR.CONST.STATUS_SMP_HANDLE:
jsxc.keepBusyAlive();
break;
}
jsxc.storage.setUserItem('buddy', bid, data);
// for encryption and verification state
jsxc.gui.update(bid);
});
jsxc.otr.objects[bid].on('smp', function(type, data) {
switch (type) {
case 'question': // verification request received
jsxc.gui.window.postMessage({
bid: bid,
direction: jsxc.Message.SYS,
msg: $.t('Authentication_request_received')
});
jsxc.gui.window.smpRequest(bid, data);
jsxc.storage.setUserItem('smp', bid, {
data: data || null
});
break;
case 'trust': // verification completed
jsxc.otr.objects[bid].trust = data;
jsxc.storage.updateUserItem('buddy', bid, 'trust', data);
jsxc.otr.backup(bid);
jsxc.gui.update(bid);
if (data) {
jsxc.gui.window.postMessage({
bid: bid,
direction: jsxc.Message.SYS,
msg: $.t('conversation_is_now_verified')
});
} else {
jsxc.gui.window.postMessage({
bid: bid,
direction: jsxc.Message.SYS,
msg: $.t('authentication_failed')
});
}
jsxc.storage.removeUserItem('smp', bid);
jsxc.gui.dialog.close('smp');
break;
case 'abort':
jsxc.gui.window.hideOverlay(bid);
jsxc.gui.window.postMessage({
bid: bid,
direction: jsxc.Message.SYS,
msg: $.t('Authentication_aborted')
});
break;
default:
jsxc.debug('[OTR] sm callback: Unknown type: ' + type);
}
});
// Receive message
jsxc.otr.objects[bid].on('ui', function(msg, encrypted, meta) {
jsxc.otr.receiveMessage({
bid: bid,
msg: msg,
encrypted: encrypted === true,
stamp: meta.stamp,
forwarded: meta.forwarded
});
});
// Send message
jsxc.otr.objects[bid].on('io', function(msg, uid) {
var jid = jsxc.gui.window.get(bid).data('jid') || jsxc.otr.objects[bid].jid;
jsxc.otr.objects[bid].jid = jid;
jsxc.otr.sendMessage(jid, msg, uid);
});
jsxc.otr.objects[bid].on('error', function(err) {
// Handle this case in jsxc.otr.receiveMessage
if (err !== 'Received an unencrypted message.') {
jsxc.gui.window.postMessage({
bid: bid,
direction: jsxc.Message.SYS,
msg: '[OTR] ' + $.t(err)
});
}
jsxc.error('[OTR] ' + err);
});
jsxc.otr.restore(bid);
},
/**
* show verification dialog with related part (secret or question)
*
* @param {type} bid
* @param {string} [data]
* @returns {undefined}
*/
onSmpQuestion: function(bid, data) {
jsxc.gui.showVerification(bid);
$('#jsxc_dialog select').prop('selectedIndex', (data ? 2 : 3)).change();
$('#jsxc_dialog > div:eq(0)').hide();
if (data) {
$('#jsxc_dialog > div:eq(2)').find('#jsxc_quest').val(data).prop('disabled', true);
$('#jsxc_dialog > div:eq(2)').find('.jsxc_submit').text($.t('Answer'));
$('#jsxc_dialog > div:eq(2)').find('.jsxc_explanation').text($.t('onsmp_explanation_question'));
$('#jsxc_dialog > div:eq(2)').show();
} else {
$('#jsxc_dialog > div:eq(3)').find('.jsxc_explanation').text($.t('onsmp_explanation_secret'));
$('#jsxc_dialog > div:eq(3)').show();
}
$('#jsxc_dialog .jsxc_close').click(function() {
jsxc.storage.removeUserItem('smp', bid);
if (jsxc.master) {
jsxc.otr.objects[bid].sm.abort();
}
});
},
/**
* Send verification request to buddy
*
* @param {string} bid
* @param {string} sec secret
* @param {string} [quest] question
* @returns {undefined}
*/
sendSmpReq: function(bid, sec, quest) {
jsxc.keepBusyAlive();
jsxc.otr.objects[bid].smpSecret(sec, quest || '');
},
/**
* Toggle encryption state
*
* @param {type} bid
* @returns {undefined}
*/
toggleTransfer: function(bid) {
if (typeof OTR !== 'function') {
return;
}
if (jsxc.storage.getUserItem('buddy', bid).msgstate === 0) {
jsxc.otr.goEncrypt(bid);
} else {
jsxc.otr.goPlain(bid);
}
},
/**
* Send request to encrypt the session
*
* @param {type} bid
* @returns {undefined}
*/
goEncrypt: function(bid) {
if (jsxc.master) {
if (jsxc.otr.objects.hasOwnProperty(bid)) {
jsxc.otr.objects[bid].sendQueryMsg();
}
} else {
jsxc.storage.updateUserItem('buddy', bid, 'transferReq', 1);
}
},
/**
* Abort encryptet session
*
* @param {type} bid
* @param cb callback
* @returns {undefined}
*/
goPlain: function(bid, cb) {
if (jsxc.master) {
if (jsxc.otr.objects.hasOwnProperty(bid)) {
jsxc.otr.objects[bid].endOtr.call(jsxc.otr.objects[bid], cb);
jsxc.otr.objects[bid].init.call(jsxc.otr.objects[bid]);
jsxc.otr.backup(bid);
}
} else {
jsxc.storage.updateUserItem('buddy', bid, 'transferReq', 0);
}
},
/**
* Backups otr session
*
* @param {string} bid
*/
backup: function(bid) {
var o = jsxc.otr.objects[bid]; // otr object
var r = {}; // return value
if (o === null) {
return;
}
// all variables which should be saved
var savekey = ['jid', 'our_instance_tag', 'msgstate', 'authstate', 'fragment', 'their_y', 'their_old_y', 'their_keyid', 'their_instance_tag', 'our_dh', 'our_old_dh', 'our_keyid', 'sessKeys', 'storedMgs', 'oldMacKeys', 'trust', 'transmittedRS', 'ssid', 'receivedPlaintext', 'authstate', 'send_interval'];
var i;
for (i = 0; i < savekey.length; i++) {
r[savekey[i]] = JSON.stringify(o[savekey[i]]);
}
if (o.their_priv_pk !== null) {
r.their_priv_pk = JSON.stringify(o.their_priv_pk.packPublic());
}
if (o.ake.otr_version && o.ake.otr_version !== '') {
r.otr_version = JSON.stringify(o.ake.otr_version);
}
jsxc.storage.setUserItem('otr', bid, r);
},
/**
* Restore old otr session
*
* @param {string} bid
*/
restore: function(bid) {
var o = jsxc.otr.objects[bid];
var d = jsxc.storage.getUserItem('otr', bid);
if (o !== null || d !== null) {
var key;
for (key in d) {
if (d.hasOwnProperty(key)) {
var val = JSON.parse(d[key]);
if (key === 'their_priv_pk' && val !== null) {
val = DSA.parsePublic(val);
}
if (key === 'otr_version' && val !== null) {
o.ake.otr_version = val;
} else {
o[key] = val;
}
}
}
jsxc.otr.objects[bid] = o;
if (o.msgstate === 1 && o.their_priv_pk !== null) {
o._smInit.call(jsxc.otr.objects[bid]);
}
}
jsxc.otr.enable(bid);
},
/**
* Create or load DSA key
*
* @returns {unresolved}
*/
createDSA: function() {
if (jsxc.options.otr.priv) {
return;
}
if (typeof OTR !== 'function') {
jsxc.warn('OTR support disabled');
OTR = {};
OTR.CONST = {
MSGSTATE_PLAINTEXT: 0,
MSGSTATE_ENCRYPTED: 1,
MSGSTATE_FINISHED: 2
};
return;
}
if (jsxc.storage.getUserItem('key') === null) {
var msg = $.t('Creating_your_private_key_');
var worker = null;
if (Worker) {
// try to create web-worker
try {
worker = new Worker(jsxc.options.root + '/lib/otr/lib/dsa-webworker.js');
} catch (err) {
jsxc.warn('Couldn\'t create web-worker.', err);
}
}
jsxc.otr.dsaFallback = (worker === null);
if (!jsxc.otr.dsaFallback) {
// create DSA key in background
worker.onmessage = function(e) {
var type = e.data.type;
var val = e.data.val;
if (type === 'debug') {
jsxc.debug(val);
} else if (type === 'data') {
jsxc.otr.DSAready(DSA.parsePrivate(val));
}
};
jsxc.debug('DSA key creation started.');
// start worker
worker.postMessage({
imports: [jsxc.options.root + '/lib/otr/vendor/salsa20.js', jsxc.options.root + '/lib/otr/vendor/bigint.js', jsxc.options.root + '/lib/otr/vendor/crypto.js', jsxc.options.root + '/lib/otr/vendor/eventemitter.js', jsxc.options.root + '/lib/otr/lib/const.js', jsxc.options.root + '/lib/otr/lib/helpers.js', jsxc.options.root + '/lib/otr/lib/dsa.js'],
seed: BigInt.getSeed(),
debug: true
});
} else {
// fallback
jsxc.xmpp.conn.pause();
jsxc.gui.dialog.open(jsxc.gui.template.get('waitAlert', null, msg), {
noClose: true
});
jsxc.debug('DSA key creation started in fallback mode.');
// wait until the wait alert is opened
setTimeout(function() {
var dsa = new DSA();
jsxc.otr.DSAready(dsa);
}, 500);
}
} else {
jsxc.debug('DSA key loaded');
jsxc.options.otr.priv = DSA.parsePrivate(jsxc.storage.getUserItem('key'));
jsxc.otr._createDSA();
}
},
/**
* Ending of createDSA().
*/
_createDSA: function() {
jsxc.storage.setUserItem('priv_fingerprint', jsxc.options.otr.priv.fingerprint());
$.each(jsxc.storage.getUserItem('windowlist') || [], function(index, val) {
jsxc.otr.create(val);
});
},
/**
* Ending of DSA key generation.
*
* @param {DSA} dsa DSA object
*/
DSAready: function(dsa) {
jsxc.storage.setUserItem('key', dsa.packPrivate());
jsxc.options.otr.priv = dsa;
// close wait alert
if (jsxc.otr.dsaFallback) {
jsxc.xmpp.conn.resume();
jsxc.gui.dialog.close();
}
jsxc.otr._createDSA();
},
enable: function(bid) {
jsxc.gui.window.get(bid).find('.jsxc_otr').removeClass('jsxc_disabled');
}
};
</code></pre>
</article>
</section>
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<h2><a href="index.html">Index</a></h2><h3>Classes</h3><ul><li><a href="jsxc.Message.html">Message</a></li></ul><h3>Namespaces</h3><ul><li><a href="jsxc.html">jsxc</a></li><li><a href="jsxc.gui.html">gui</a></li><li><a href="jsxc.gui.dialog.html">dialog</a></li><li><a href="jsxc.gui.queryActions.html">queryActions</a></li><li><a href="jsxc.gui.roster.html">roster</a></li><li><a href="jsxc.gui.window.html">window</a></li><li><a href="jsxc.muc.html">muc</a></li><li><a href="jsxc.notification.html">notification</a></li><li><a href="jsxc.options.html">options</a></li><li><a href="jsxc.otr.html">otr</a></li><li><a href="jsxc.storage.html">storage</a></li><li><a href="jsxc.webrtc.html">webrtc</a></li><li><a href="jsxc.xmpp.html">xmpp</a></li><li><a href="jsxc.xmpp.bookmarks.html">bookmarks</a></li><li><a href="jsxc.xmpp.carbons.html">carbons</a></li></ul><h3>Global</h3><ul><li>{boolean}</li><li>{integer}</li><li>{string}</li></ul>
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