<?php
/**
 *	Logs a user into the system using CAS
 *
 * @copyright 2006-2010 City of Bloomington, Indiana
 * @license http://www.gnu.org/licenses/agpl.txt GNU/AGPL, see LICENSE.txt
 * @author Cliff Ingham <inghamn@bloomington.in.gov>
 */
if (defined('CAS')) {
	if (isset($_REQUEST['return_url'])) {
		$_SESSION['return_url'] = $_REQUEST['return_url'];
	}

	require_once CAS.'/SimpleCAS/Autoload.php';

	$options = array('hostname'=>CAS_SERVER,'uri'=>CAS_URI);
	$protocol = new SimpleCAS_Protocol_Version2($options);
	$client = SimpleCAS::client($protocol);
	$client->forceAuthentication();

	if ($client->isAuthenticated()) {
		try {
			$user = new User($client->getUsername());
			$user->startNewSession();

			if (isset($_SESSION['return_url'])) {
				header('Location: '.$_SESSION['return_url']);
			}
			else {
				header('Location: '.BASE_URL);
			}
		}
		catch (Exception $e) {
			$_SESSION['errorMessages'][] = $e;
		}
	}
	else {
		header('Location: '.BASE_URL);
	}
}

$template = new Template();
$template->blocks[] = new Block('loginForm.inc');
echo $template->render();