<?php
/**
 *
 * Copyright (C) Villanova University 2007.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

require_once 'Action.php';

class Home extends Action {

    function launch()
    {
        header('Content-type: text/xml');
        header('Cache-Control: no-cache, must-revalidate'); // HTTP/1.1
        header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
        
        $output = '<?xml version="1.0" encoding="UTF-8"?' . ">\n" .
                  "<AJAXResponse>\n";
        if (is_callable(array($this, $_GET['method']))) {
            $output .= '<result>' . $this->$_GET['method']() . "</result>\n";
        } else {
            $output .= '<Error>Invalid Method</Error>';
        }
        $output .= '</AJAXResponse>';
        
        echo $output;
    }

    function getLightbox()
    {
        global $configArray;
        global $interface;

        // Assign our followup
        $interface->assign('followupModule', $_GET['followupModule']);
        $interface->assign('followupAction', $_GET['followupAction']);
        $interface->assign('followupId',     $_GET['followupId']);

        // Sanitize incoming parameters
        $module = preg_replace('/[^\w]/', '', $_GET['submodule']);
        $action = preg_replace('/[^\w]/', '', $_GET['subaction']);
        
        // Call Action
        $path = 'services/' . $module . '/' . $action. '.php';
        if (is_readable($path)) {
            require_once $path;
            if (class_exists($action)) {
                $service = new $action();
                $page = $service->launch();
                $interface->assign('page', $page);
            } else {
                PEAR::raiseError(new PEAR_Error('Unknown Action'));
            }
        } else {
            PEAR::raiseError(new PEAR_Error('Cannot Load Action'));
        }

        return $interface->fetch('AJAX/lightbox.tpl');
    }

    function Login()
    {
        global $configArray;

        // Fetch Salt
        $salt = $this->generateSalt();
        
        // HexDecode Password
        $password = pack('H*', $_GET['password']);

        // Decrypt Password
        /*
        require_once 'Crypt/Blowfish.php';
        $cipher = new Crypt_Blowfish($salt);
        $password = $cipher->decrypt($_GET['password']);
        */
        /*
        require_once 'Crypt/XXTEA.php';
        $cipher = new Crypt_XXTEA();
        $cipher->setKey($salt);
        $password = $cipher->decrypt($password);
        */
        require_once 'Crypt/rc4.php';
        $password = rc4Encrypt($salt, $password);
        
        // Put the username/password in POST fields where the authentication module
        // expects to find them:
        $_POST['username'] = $_GET['username'];
        $_POST['password'] = $password;
        
        // Authenticate the user:
        $user = UserAccount::login();
        if (PEAR::isError($user)) {
            return 'Error';
        } else {
            return 'True';
        }
    }
    
    function GetSalt()
    {
        return $this->generateSalt();
    }
    
    function generateSalt()
    {
        //return md5($_ENV['REMOTE_ADDR']);
        return str_replace('.', '', $_SERVER['REMOTE_ADDR']);
    }

}
?>