2015-10-15 23:05:57 -04:00
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var cookie = require('cookie');
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2016-09-08 12:52:22 -04:00
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var defaults = require('lodash.defaults');
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2015-10-15 23:05:57 -04:00
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var xhr = require('xhr');
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2015-12-08 15:14:16 -05:00
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var pako = require('pako');
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2015-10-15 23:05:57 -04:00
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2016-01-14 10:25:03 -05:00
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/**
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* Module that handles coookie interactions.
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* (Cookies?!?! Jar?!?! Get it?!?! WE'RE AMAZING!!!!)
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*
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* get(name, callback) – can be sync or async, as callback is optional
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* set(name, value) – synchronously sets the cookie
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* use(name, uri, callback) – can by sync or async, gets cookie from the uri if not there.
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*/
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2015-12-07 17:43:04 -05:00
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var Jar = {
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2015-12-08 15:14:16 -05:00
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unsign: function (value, callback) {
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2016-03-23 10:02:20 -04:00
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// Return the usable content portion of a signed, compressed cookie generated by
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// Django's signing module
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// https://github.com/django/django/blob/stable/1.8.x/django/core/signing.py
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2016-06-30 11:27:46 -04:00
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if (typeof value === 'undefined') return callback(null, value);
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2015-12-08 15:14:16 -05:00
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try {
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var b64Data = value.split(':')[0];
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var decompress = false;
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if (b64Data[0] === '.') {
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decompress = true;
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b64Data = b64Data.substring(1);
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}
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// Django makes its base64 strings url safe by replacing + and / with - and _ respectively
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2016-03-23 10:02:20 -04:00
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// using base64.urlsafe_b64encode
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// https://docs.python.org/2/library/base64.html#base64.b64encode
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2015-12-08 15:14:16 -05:00
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b64Data = b64Data.replace(/[-_]/g, function (c) {return {'-':'+', '_':'/'}[c]; });
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var strData = atob(b64Data);
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if (decompress) {
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var charData = strData.split('').map(function (c) { return c.charCodeAt(0); });
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var binData = new Uint8Array(charData);
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var data = pako.inflate(binData);
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strData = String.fromCharCode.apply(null, new Uint16Array(data));
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}
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return callback(null, strData);
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} catch (e) {
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return callback(e);
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}
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},
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2015-12-07 17:43:04 -05:00
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get: function (name, callback) {
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2016-03-23 09:50:41 -04:00
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// Get cookie by name
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var obj = cookie.parse(document.cookie) || {};
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2015-10-15 23:05:57 -04:00
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2015-12-07 17:43:04 -05:00
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// Handle optional callback
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if (typeof callback === 'function') {
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if (typeof obj === 'undefined') return callback('Cookie not found.');
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return callback(null, obj[name]);
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}
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return obj[name];
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},
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use: function (name, uri, callback) {
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// Attempt to get cookie
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Jar.get(name, function (err, obj) {
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if (typeof obj !== 'undefined') return callback(null, obj);
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// Make XHR request to cookie setter uri
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xhr({
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uri: uri
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}, function (err) {
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if (err) return callback(err);
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Jar.get(name, callback);
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});
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2015-10-15 23:05:57 -04:00
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});
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2015-12-07 17:43:04 -05:00
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},
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2016-09-08 12:52:22 -04:00
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set: function (name, value, opts) {
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2017-09-18 14:40:52 -04:00
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opts = opts || {};
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2016-09-08 12:52:22 -04:00
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defaults(opts, {
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2017-09-18 11:44:06 -04:00
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expires: new Date(new Date().setYear(new Date().getFullYear() + 1))
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2016-09-08 12:52:22 -04:00
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});
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2017-09-18 11:44:06 -04:00
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opts.path = '/';
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2016-09-08 12:52:22 -04:00
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var obj = cookie.serialize(name, value, opts);
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document.cookie = obj;
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2016-06-08 13:47:11 -04:00
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},
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2016-06-13 10:06:43 -04:00
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getUnsignedValue: function (cookieName, signedValue, callback) {
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2016-06-08 13:47:11 -04:00
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// Get a value from a signed object
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Jar.get(cookieName, function (err, value) {
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if (err) return callback(err);
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2016-06-30 11:40:05 -04:00
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if (typeof value === 'undefined') return callback(null, value);
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2016-06-08 13:47:11 -04:00
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Jar.unsign(value, function (err, contents) {
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if (err) return callback(err);
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2016-06-30 11:27:46 -04:00
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2016-06-08 13:47:11 -04:00
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try {
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var data = JSON.parse(contents);
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} catch (err) {
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return callback(err);
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}
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return callback(null, data[signedValue]);
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});
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});
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2015-12-07 17:43:04 -05:00
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}
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2015-10-16 10:59:55 -04:00
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};
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2015-10-16 15:10:17 -04:00
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module.exports = Jar;
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