export graph from cacti with authentication

[procef]

hello,

I'm creating an extranet with PHP/mysql to watch my access points activity, but I can't get graphs from cacti if the web based autentication is set.
I want to let the authentication set so that users will access to their graphs and won't have access to the other graphs

I tried to modify many pages such as graphview.php so that I can use the rrdtool function but I got some problems with the $_session varible, then i tried to create a $_session variable with each requiered values on it but it still not working.

I also can't use the export functionality on cacti cause there is too many graph...

Does anybody have an idea ???

Thanx