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<?php
//  ------------------------------------------------------------------------ //
//                XOOPS - PHP Content Management System                      //
//                    Copyright (c) 2000 XOOPS.org                           //
//                       <http://www.xoops.org/>                             //
//  ------------------------------------------------------------------------ //
//  This program is free software; you can redistribute it and/or modify     //
//  it under the terms of the GNU General Public License as published by     //
//  the Free Software Foundation; either version 2 of the License, or        //
//  (at your option) any later version.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  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 //
//  ------------------------------------------------------------------------ //

/**
 * Authorization classes, factory class file
 *
 * @copyright   http://www.impresscms.org/ The ImpressCMS Project
 * @license     LICENSE.txt
 * @category    ICMS
 * @package     Auth
 * @author      modified by UnderDog <underdog@impresscms.org>
 * @version     SVN: $Id: Factory.php 12313 2013-09-15 21:14:35Z skenow $
 */

/**
 * Authentification class factory
 * @copyright   http://www.xoops.org/ The XOOPS Project
 * @copyright   http://www.impresscms.org/ The ImpressCMS Project
 * @license     http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU General Public License (GPL)
 * @since       XOOPS
 * @category    ICMS
 * @package     Auth
 * @author      Pierre-Eric MENUET  <pemphp@free.fr>
 */
class icms_auth_Factory {

    /**
     * Get a reference to the only instance of authentication class
     *
     * if the class has not been instantiated yet, this will also take
     * care of that
     * @param   string $uname Username to get Authentication class for
     * @static
     * @return  object  Reference to the only instance of authentication class
     */
    static public function &getAuthConnection($uname) {
        static $auth_instance;
        if (isset($auth_instance)) {
            return $auth_instance;
        } else {
            global $icmsConfigAuth;

            if (empty($icmsConfigAuth['auth_method'])) {
                // If there is a config error, we use xoops
                $auth_method = 'xoops';
            } else {
                $auth_method = $icmsConfigAuth['auth_method'];

                /*
                 * @todo we need to add this in the preference
                 */
            }
            // Verify if uname allow to bypass LDAP auth
            if (in_array($uname, $icmsConfigAuth['ldap_users_bypass'])) $auth_method = 'xoops';
            /* with autoloading in ImpressCMS 1.3, requiring the file is not necessary */
            $class = 'icms_auth_' . ucfirst($auth_method);
            switch ($auth_method) {
                case 'xoops' :
                    $dao =& icms::$xoopsDB;
                    break;

                case 'ldap'  :
                    $dao = null;
                    break;

                case 'ads'  :
                    $dao = null;
                    break;

                default:
                    break;
            }
            $auth_instance = new $class($dao);
            return $auth_instance;
        }
    }
}