class.ilAuthMultiple.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 ILIAS open source, University of Cologne            |
        |                                                                             |
        | 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.                      |
        |                                                                             |
        | 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. |
        +-----------------------------------------------------------------------------+
*/

include_once('./Services/Authentication/classes/class.ilAuthUtils.php');

class ilAuthMultiple
{
        protected $settings = null;
        protected $auth = null;
        protected $auth_modes = null;
        protected $current_auth_modes = null;
        protected $first_auth_method = true;
        
        public function __construct()
        {
                include_once('./Services/Authentication/classes/class.ilAuthModeDetermination.php');
                $this->settings = ilAuthModeDetermination::_getInstance();
                
                $this->auth_modes = $this->settings->getAuthModeSequence();
                
                $this->initNextAuthObject();
                $this->first_auth_method = false;
        }
        
        public function setIdle($time,$add = false)
        {
                $this->auth->setIdle($time,$add);
        }
        
        public function setExpire($time,$add = false)
        {
                $this->auth->setExpire($time,$add);
        }
        
        public function logout()
        {
                $this->auth->logout();
        }
        
        public function checkAuth()
        {
                global $ilLog;
                
                do
                {
                        if($this->auth->checkAuth())
                        {
                                return true;
                        }
                        $this->auth->logout();
                        
                } 
                while($this->initNextAuthObject());
                
                $ilLog->write(__METHOD__.': Authentication failed.');
                return false;
        }
        
        public function getUsername()
        {
                return $this->auth->getUsername();
        }
        
        public function getAuth()
        {
                return $this->checkAuth();
        }
        
        public function start()
        {
                $this->auth->start();
        }
        
        public function getStatus()
        {
                return $this->auth->getStatus();
        }
        
        
        private function initNextAuthObject()
        {
                global $ilLog,$ilClientIniFile;
                
                if(!$this->current_auth_mode = current($this->auth_modes))
                {
                        return false;
                }
                next($this->auth_modes);
                switch($this->current_auth_mode)
                {
                        case AUTH_LDAP:
                                $ilLog->write(__METHOD__.': Current Authentication method is LDAP.');
                        include_once 'Services/LDAP/classes/class.ilAuthLDAP.php';
                                $auth_params['sessionName'] = "_authhttp".md5(CLIENT_ID);
                                $this->auth = new ilAuthLDAP($auth_params);
                                break;
                                
                        case AUTH_RADIUS:
                                $ilLog->write(__METHOD__.': Current Authentication method is RADIUS.');
                                include_once('Services/Radius/classes/class.ilAuthRadius.php');
                                $auth_params['sessionName'] = "_authhttp".md5(CLIENT_ID);
                                $this->auth = new ilAuthRadius($auth_params);
                                break;
                        case AUTH_LOCAL:
                                $ilLog->write(__METHOD__.': Current Authentication method is ILIAS DB.');
                                $auth_params = array(
                                                                                        'dsn'             => IL_DSN,
                                                                                        'table'       => $ilClientIniFile->readVariable("auth", "table"),
                                                                                        'usernamecol' => $ilClientIniFile->readVariable("auth", "usercol"),
                                                                                        'passwordcol' => $ilClientIniFile->readVariable("auth", "passcol")
                                                                                        );
                                $auth_params['sessionName'] = "_authhttp".md5(CLIENT_ID);
                                require_once 'class.ilAuthContainerMDB2.php';
                                $authContainer = new ilAuthContainerMDB2($auth_params);
                                $authContainer->setObserversEnabled(true);
                                $this->auth = new Auth($authContainer, $auth_params,"",false);
                                break;                          
                }
                if(!$this->first_auth_method)
                {
                        $this->auth->start();
                }
                return true;
        }
        
}
?>