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cryptpad/www/form/main.js

244 lines
11 KiB
JavaScript

// Load #1, load as little as possible because we are in a race to get the loading screen up.
define([
'/bower_components/nthen/index.js',
'/api/config',
'/common/dom-ready.js',
'/common/sframe-common-outer.js',
'/bower_components/tweetnacl/nacl-fast.min.js',
], function (nThen, ApiConfig, DomReady, SFCommonO) {
var Nacl = window.nacl;
var href, hash;
// Loaded in load #2
nThen(function (waitFor) {
DomReady.onReady(waitFor());
}).nThen(function (waitFor) {
var obj = SFCommonO.initIframe(waitFor, true);
href = obj.href;
hash = obj.hash;
}).nThen(function (/*waitFor*/) {
var privateKey, publicKey;
var channels = {};
var getPropChannels = function () {
return channels;
};
var addData = function (meta, CryptPad, user, Utils) {
var keys = Utils.secret && Utils.secret.keys;
var parsed = Utils.Hash.parseTypeHash('pad', hash.slice(1));
if (parsed && parsed.auditorKey) {
meta.form_auditorKey = parsed.auditorKey;
meta.form_auditorHash = hash;
}
var secondary = keys && keys.secondaryKey;
if (!secondary) { return; }
var curvePair = Nacl.box.keyPair.fromSecretKey(Nacl.util.decodeUTF8(secondary).slice(0,32));
var validateKey = keys.secondaryValidateKey;
meta.form_answerValidateKey = validateKey;
publicKey = meta.form_public = Nacl.util.encodeBase64(curvePair.publicKey);
privateKey = meta.form_private = Nacl.util.encodeBase64(curvePair.secretKey);
var auditorHash = Utils.Hash.getViewHashFromKeys({
version: 1,
channel: Utils.secret.channel,
keys: { viewKeyStr: Nacl.util.encodeBase64(keys.cryptKey) }
});
var _parsed = Utils.Hash.parseTypeHash('pad', auditorHash);
meta.form_auditorHash = _parsed.getHash({auditorKey: privateKey});
};
var addRpc = function (sframeChan, Cryptpad, Utils) {
sframeChan.on('EV_FORM_PIN', function (data) {
channels.answersChannel = data.channel;
Cryptpad.getPadAttribute('answersChannel', function (err, res) {
// If already stored, don't pin it again
if (res && res === data.channel) { return; }
Cryptpad.pinPads([data.channel], function () {
Cryptpad.setPadAttribute('answersChannel', data.channel, function () {});
});
});
});
var getAnonymousKeys = function (formSeed, channel) {
var array = Nacl.util.decodeBase64(formSeed + channel);
var hash = Nacl.hash(array);
var secretKey = Nacl.util.encodeBase64(hash.subarray(32));
var publicKey = Utils.Hash.getCurvePublicFromPrivate(secretKey);
return {
curvePrivate: secretKey,
curvePublic: publicKey,
};
};
sframeChan.on('Q_FORM_FETCH_ANSWERS', function (data, cb) {
var myKeys = {};
var myFormKeys;
var CPNetflux;
var network;
nThen(function (w) {
require([
'/bower_components/chainpad-netflux/chainpad-netflux.js',
], w(function (_CPNetflux) {
CPNetflux = _CPNetflux;
}));
Cryptpad.getAccessKeys(w(function (_keys) {
if (!Array.isArray(_keys)) { return; }
_keys.some(function (_k) {
if ((!Cryptpad.initialTeam && !_k.id) || Cryptpad.initialTeam === _k.id) {
myKeys = _k;
return true;
}
});
}));
Cryptpad.getFormKeys(w(function (keys) {
myFormKeys = keys;
}));
Cryptpad.makeNetwork(w(function (err, nw) {
network = nw;
}));
}).nThen(function () {
if (!network) { return void cb({error: "E_CONNECT"}); }
if (myFormKeys.formSeed) {
myFormKeys = getAnonymousKeys(myFormKeys.formSeed, data.channel);
}
var keys = Utils.secret && Utils.secret.keys;
var crypto = Utils.Crypto.Mailbox.createEncryptor({
curvePrivate: privateKey || data.privateKey,
curvePublic: publicKey || data.publicKey,
validateKey: data.validateKey
});
var config = {
network: network,
channel: data.channel,
noChainPad: true,
validateKey: keys.secondaryValidateKey,
owners: [myKeys.edPublic],
crypto: crypto,
// XXX Cache
};
var results = {};
config.onReady = function () {
var myKey;
// If we have submitted an anonymous answer, retrieve it
if (myFormKeys.curvePublic && results[myFormKeys.curvePublic]) {
myKey = myFormKeys.curvePublic;
}
cb({
myKey: myKey,
results: results
});
network.disconnect();
};
config.onMessage = function (msg, peer, vKey, isCp, hash, senderCurve, cfg) {
var parsed = Utils.Util.tryParse(msg);
if (!parsed) { return; }
results[senderCurve] = {
msg: parsed,
hash: hash,
time: cfg.time
};
};
CPNetflux.start(config);
});
});
sframeChan.on("Q_FETCH_MY_ANSWERS", function (data, cb) {
var answer;
var myKeys;
nThen(function (w) {
Cryptpad.getFormKeys(w(function (keys) {
myKeys = keys;
}));
Cryptpad.getFormAnswer({channel: data.channel}, w(function (obj) {
if (!obj || obj.error) {
w.abort();
return void cb(obj);
}
answer = obj;
}));
}).nThen(function () {
if (answer.anonymous) {
if (!myKeys.formSeed) { return void cb({ error: "ANONYMOUS_ERROR" }); }
myKeys = getAnonymousKeys(myKeys.formSeed, data.channel);
}
Cryptpad.getHistoryRange({
channel: data.channel,
lastKnownHash: answer.hash,
toHash: answer.hash,
}, function (obj) {
if (obj && obj.error) { return void cb(obj); }
var messages = obj.messages;
var res = Utils.Crypto.Mailbox.openOwnSecretLetter(messages[0].msg, {
validateKey: data.validateKey,
ephemeral_private: Nacl.util.decodeBase64(answer.curvePrivate),
my_private: Nacl.util.decodeBase64(myKeys.curvePrivate),
their_public: Nacl.util.decodeBase64(data.publicKey)
});
cb(JSON.parse(res.content));
});
});
});
sframeChan.on("Q_FORM_SUBMIT", function (data, cb) {
var box = data.mailbox;
var myKeys;
nThen(function (w) {
Cryptpad.getFormKeys(w(function (keys) {
myKeys = keys;
}));
}).nThen(function () {
// XXX if we are a registered user (myKeys.curvePrivate exists), we may
// have already answered anonymously. We should send a "proof" to show
// that the existing anonymous answer are ours (using myKeys.formSeed).
// Even if we never answered anonymously, the keyPair would be unique to
// the current channel so it wouldn't leak anything.
if (data.anonymous) {
if (!myKeys.formSeed) { return void cb({ error: "ANONYMOUS_ERROR" }); }
myKeys = getAnonymousKeys(myKeys.formSeed, box.channel);
}
var keys = Utils.secret && Utils.secret.keys;
myKeys.signingKey = keys.secondarySignKey;
var ephemeral_keypair = Nacl.box.keyPair();
var ephemeral_private = Nacl.util.encodeBase64(ephemeral_keypair.secretKey);
myKeys.ephemeral_keypair = ephemeral_keypair;
var crypto = Utils.Crypto.Mailbox.createEncryptor(myKeys);
var text = JSON.stringify(data.results);
var ciphertext = crypto.encrypt(text, box.publicKey);
var hash = ciphertext.slice(0,64);
Cryptpad.anonRpcMsg("WRITE_PRIVATE_MESSAGE", [
box.channel,
ciphertext
], function (err, response) {
Cryptpad.storeFormAnswer({
channel: box.channel,
hash: hash,
curvePrivate: ephemeral_private,
anonymous: Boolean(data.anonymous)
});
cb({error: err, response: response, hash: hash});
});
});
});
};
SFCommonO.start({
addData: addData,
addRpc: addRpc,
cache: true,
noDrive: true,
hash: hash,
href: href,
useCreationScreen: true,
messaging: true,
getPropChannels: getPropChannels
});
});
});