cPanel / Fantastico / Joomla -> Domain info

Greetings! First off we're going to have several thousand cPanel users, each are going to have their own version of Joomla 1.5 which we will install for them through cPanel/Fantastico.

My question revolves around finding domain/user information for whichever client is running our modules.

Basically what I'm trying to find out is how and what user specific information I can get through php (or other means). We're developing modules that depend on these variables. Ie -> A sign-up form which submits to our central DB, but must pass along information about which client is submitting it (their domain.com for instance).

If anyone can point me in the right direction I would greatly appreciate it.

 

Theres actually a class created in configuration.php after a Joomla install called JConfig.

I was able to get the information I needed via these two lines:

$jc = new JConfig();
$domain = $jc->sitename;