dnrops
/
cryptpad
mirror of https://github.com/xwiki-labs/cryptpad
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

fall back to old parsing if the message is bencoded?

This commit is contained in:
ansuz 2016-05-20 16:45:25 +02:00
parent 976a08cc7a
commit f04be53d11
1 changed files with 36 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
www/common/crypto.js
View File

@ -22,12 +22,46 @@ define([
return Nacl.util.encodeUTF8(unpacked);
};
var isBencoded = function (msg) {
return /^\d+:/;
};
// this is crap because of bencoding messages... it should go away....
var splitMessage = function (msg, sending) {
var idx = 0;
var nl;
for (var i = ((sending) ? 0 : 1); i < 3; i++) {
nl = msg.indexOf(':',idx);
idx = nl + Number(msg.substring(idx,nl)) + 1;
}
return [ msg.substring(0,idx), msg.substring(msg.indexOf(':',idx) + 1) ];
};
var encrypt = module.exports.encrypt = function (msg, key) {
return encryptStr(msg, key);
if (!isBencoded(msg)) {
return encryptStr(msg, key);
}
var spl = splitMessage(msg, true);
var json = JSON.parse(spl[1]);
// non-patches are not encrypted.
if (json[0] !== 2) { return msg; }
json[1] = encryptStr(JSON.stringify(json[1]), key);
var res = JSON.stringify(json);
return spl[0] + res.length + ':' + res;
};
var decrypt = module.exports.decrypt = function (msg, key) {
return decryptStr(msg, key);
if (!isBencoded(msg)) {
return decryptStr(msg, key);
}
var spl = splitMessage(msg, false);
var json = JSON.parse(spl[1]);
// non-patches are not encrypted.
if (json[0] !== 2) { return msg; }
if (typeof(json[1]) !== 'string') { throw new Error(); }
json[1] = JSON.parse(decryptStr(json[1], key));
var res = JSON.stringify(json);
return spl[0] + res.length + ':' + res;
};
var parseKey = module.exports.parseKey = function (str) {