mirror of https://github.com/xwiki-labs/cryptpad
131 lines
4.3 KiB
JavaScript
131 lines
4.3 KiB
JavaScript
define([
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'/bower_components/chainpad-listmap/chainpad-listmap.js',
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'/bower_components/chainpad-crypto/crypto.js',
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'/common/cryptpad-common.js',
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'/common/credential.js',
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'/bower_components/tweetnacl/nacl-fast.min.js',
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'/bower_components/scrypt-async/scrypt-async.min.js', // better load speed
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'/bower_components/jquery/dist/jquery.min.js',
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], function (Listmap, Crypto, Cryptpad, Cred) {
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var Exports = {
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Cred: Cred,
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};
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var Nacl = window.nacl;
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var allocateBytes = function (bytes) {
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var dispense = Cred.dispenser(bytes);
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var opt = {};
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// dispense 18 bytes of entropy for your encryption key
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var encryptionSeed = dispense(18);
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// 16 bytes for a deterministic channel key
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var channelSeed = dispense(16);
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// 32 bytes for a curve key
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var curveSeed = opt.curveSeed = dispense(32);
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// 32 more for a signing key
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var edSeed = opt.edSeed = dispense(32);
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// derive a private key from the ed seed
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var signingKeypair = Nacl.sign.keyPair.fromSeed(new Uint8Array(edSeed));
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opt.edPrivate = Nacl.util.encodeBase64(signingKeypair.secretKey);
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opt.edPublic = Nacl.util.encodeBase64(signingKeypair.publicKey);
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var keys = opt.keys = Crypto.createEditCryptor(null, encryptionSeed);
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// 24 bytes of base64
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keys.editKeyStr = keys.editKeyStr.replace(/\//g, '-');
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// 32 bytes of hex
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var channelHex = opt.channelHex = Cryptpad.uint8ArrayToHex(channelSeed);
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// should never happen
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if (channelHex.length !== 32) { throw new Error('invalid channel id'); }
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var channel64 = opt.channel64 = Cryptpad.hexToBase64(channelHex);
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var userHash = opt.userHash = '/1/edit/' + [opt.channel64, opt.keys.editKeyStr].join('/');
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return opt;
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};
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var loadUserObject = function (opt, cb) {
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var config = {
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websocketURL: Cryptpad.getWebsocketURL(),
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channel: opt.channelHex,
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data: {},
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validateKey: opt.keys.validateKey, // derived validation key
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crypto: Crypto.createEncryptor(opt.keys),
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logLevel: 1,
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};
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var rt = opt.rt = Listmap.create(config);
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rt.proxy
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.on('ready', function (info) {
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cb(void 0, rt);
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})
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.on('disconnect', function (info) {
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cb('E_DISCONNECT', info);
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});
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};
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var isProxyEmpty = function (proxy) {
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return Object.keys(proxy).length === 0;
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};
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Exports.loginOrRegister = function (uname, passwd, isRegister, cb) {
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if (typeof(cb) !== 'function') { return; }
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// Usernames are all lowercase. No going back on this one
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uname = uname.toLowerCase();
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// validate inputs
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if (!Cred.isValidUsername(uname)) { return void cb('INVAL_USER'); }
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if (!Cred.isValidPassword(passwd)) { return void cb('INVAL_PASS'); }
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Cred.deriveFromPassphrase(uname, passwd, 128, function (bytes) {
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// results...
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var res = {
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register: isRegister,
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};
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// run scrypt to derive the user's keys
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var opt = res.opt = allocateBytes(bytes);
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// use the derived key to generate an object
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loadUserObject(opt, function (err, rt) {
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if (err) { return void cb(err); }
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res.proxy = rt.proxy;
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res.realtime = rt.realtime;
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res.network = rt.network;
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// they're registering...
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res.userHash = opt.userHash;
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res.userName = uname;
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// export their signing key
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res.edPrivate = opt.edPrivate;
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res.edPublic = opt.edPublic;
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// they tried to just log in but there's no such user
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if (!isRegister && isProxyEmpty(rt.proxy)) {
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rt.network.disconnect(); // clean up after yourself
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return void cb('NO_SUCH_USER', res);
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}
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// they tried to register, but those exact credentials exist
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if (isRegister && !isProxyEmpty(rt.proxy)) {
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rt.network.disconnect();
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return void cb('ALREADY_REGISTERED', res);
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}
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cb(void 0, res);
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});
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});
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};
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return Exports;
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});
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