Parse CodeIgniter cookie with Node.js

Question

I'm trying to parse a CodeIgniter cookie with node.js. I'm using this code to get all the cookies:

function parse_cookies(_cookies) {
   var cookies = {};

   _cookies && _cookies.split(';').forEach(function( cookie ) {
     var parts = cookie.split('=');
     cookies[ parts[ 0 ].trim() ] = ( parts[ 1 ] || '' ).trim();
   });

   return cookies;
}

It returns all the cookies so then I do:

var cookies = parse_cookies(handshakeData.headers.cookie);
console.log(cookies.ci_session);

But the ci_session cookie is in this format:

a:4:{s:10:"session_id";s:32:"152933dbf8a52a55b48518b940451aey";s:10:"ip_address";s:12:"192.168.1.68";s:10:"user_agent";s:72:"Mozilla/5.0+(Windows+NT+6.1;+WOW64;+rv:34.0)+Gecko/20100101+Firefox/34.0";s:13:"last_activity";i:1419314157;}44503444ab1688f1e3a5ece6a3ff1e024e4b773f

How can I get the session_id value from it?

Madara's Ghost · Accepted Answer · 2014-12-23 08:44:30Z

1

This format looks like PHP's serialize() function. There's an NPM Package to parse those.

If you don't want to add another dependency, and assuming CodeIgniter's cookie scheme won't change much, you can do something as simple as

cookies.ci_session.match(/s:32:"([a-z0-9]{32})"/)[1]

Which finds the occurrence of s:32:"(??)" where ?? is 32 alphanumeric characters. The [1] is because match() returns an array of matches, [0] is the entire match (s:32:"(??)") and [1] is the first capture group (enclosed in brackets), namely ??, which is what you want.

edited Dec 23, 2014 at 8:44

answered Dec 23, 2014 at 8:21

Madara's Ghost

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