Expand an existing Codeigniter Module

Hello, i have a simple but complete CodeIgniter module that manage User Login via mnultiple Social channel and Regular way. I need to use this module to offer FREE WIFI access to my customers. U can have a look at this adress: [login to view URL] Basically the work is to take this ready script and to put it at work to let him do what i need. I attach a simple mockup of work flow of my system: 1) the user connect to FREE Wifi ( the router redirect the user to the login page ) 2) the user must do a LOGIN ( the script supplyied integrate all type of social network ) 3) after success full login the app share his action with all his contacts ( this has sense only in case of facebook login or google +1 login ) 4) the app check if user LIKED facebook or google page ( in case of login with facebook or google ) 5) the user if did not LIKE the page he must LIKE 6) after he pressed LIKE he get redirected to LANDING PAGE defined by us. The 70 % of the work as u can see is done. ( LOGIN module handle almost all this tasks already ) Thanks