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implement createChannelId api

pull/1/head
ansuz 2016-12-19 14:55:39 +01:00
parent 3698fe8b0e
commit 7df460c766
1 changed files with 21 additions and 2 deletions
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23
www/common/cryptpad-common.js
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@ -240,11 +240,30 @@ define([
};
var uint8ArrayToHex = common.uint8ArrayToHex = function (a) {
return a.map(function (e) {
return Number(e & 0xff).toString(16);
// call slice so Uint8Arrays work as expected
return Array.prototype.slice.call(a).map(function (e, i) {
var n = Number(e & 0xff).toString(16);
if (n === 'NaN') {
throw new Error('invalid input resulted in NaN');
}
switch (n.length) {
case 0: return '00'; // just being careful, shouldn't happen
case 1: return '0' + n;
case 2: return n;
default: throw new Error('unexpected value');
}
}).join('');
};
var createChannelId = common.createChannelId = function () {
var id = uint8ArrayToHex(Crypto.Nacl.randomBytes(16));
if (id.length !== 32 || /[^a-f0-9]/.test(id)) {
throw new Error('channel ids must consist of 32 hex characters');
}
return id;
};
var replaceHash = common.replaceHash = function (hash) {
if (window.history && window.history.replaceState) {
if (!/^#/.test(hash)) { hash = '#' + hash; }