class.ilAuthModeDetermination.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 ilAuthModeDetermination
{
        const TYPE_MANUAL = 0;
        const TYPE_AUTOMATIC = 1;
        
        protected static $instance = null;
        
        protected $db = null;
        protected $settings = null;
        
        protected $kind = 0;
        protected $position = array(); 
        

        private function __construct()
        {
                global $ilSetting,$ilDB;
                
                $this->db = $ilDB;

                include_once "./Services/Administration/classes/class.ilSetting.php";
                $this->settings = new ilSetting("auth_mode_determination");
                $this->read();
        }
        
        public static function _getInstance()
        {
                if(self::$instance)
                {
                        return self::$instance;
                }
                return self::$instance = new ilAuthModeDetermination();
        }

        public function isManualSelection()
        {
                return $this->kind == self::TYPE_MANUAL;
        }

        public function getKind()
        {
                return $this->kind;
        }
        
        public function setKind($a_kind)
        {
                $this->kind = $a_kind;
        }
        
        public function getAuthModeSequence()
        {
                return $this->position ? $this->position : array();             
        }
        
        public function getCountActiveAuthModes()
        {
                return count($this->position);
        }
        
        public function setAuthModeSequence($a_pos)
        {
                $this->position = $a_pos;
        }
        
        public function save()
        {
                $this->settings->deleteAll();
                
                $this->settings->set('kind',$this->getKind());
                
                $counter = 0;
                foreach($this->position as $auth_mode)
                {
                        $this->settings->set((string) $counter++,$auth_mode);
                }
        }
        
        
        private function read()
        {
                $this->kind = $this->settings->get('kind',self::TYPE_MANUAL);
                
                include_once('Services/LDAP/classes/class.ilLDAPServer.php');
                $ldap_active = ilLDAPServer::_getFirstActiveServer();
                
                include_once('Services/Radius/classes/class.ilRadiusSettings.php');
                $rad_settings = ilRadiusSettings::_getInstance();
                $rad_active = $rad_settings->isActive();
                
                
                // Check if active
                for($i = 0; $i < 3; $i++)
                {
                        if($auth_mode = $this->settings->get((string) $i,0))
                        {
                                switch($auth_mode)
                                {
                                        case AUTH_LOCAL:
                                                $this->position[] = $auth_mode;
                                                break;
                                        case AUTH_LDAP:
                                                if($ldap_active)
                                                {
                                                        $this->position[] = $auth_mode;  
                                                }
                                                break;
                                                
                                        case AUTH_RADIUS:
                                                if($rad_active)
                                                {
                                                        $this->position[] = $auth_mode;  
                                                }
                                                break;
                                }
                        }
                }
                
                // Append missing active auth modes
                if(!in_array(AUTH_LOCAL,$this->position))
                {
                        $this->position[] = AUTH_LOCAL;
                }
                if($ldap_active)
                {       
                        if(!in_array(AUTH_LDAP,$this->position))
                        {
                                $this->position[] = AUTH_LDAP;
                        }
                }
                if($rad_active)
                {
                        if(!in_array(AUTH_RADIUS,$this->position))
                        {
                                $this->position[] = AUTH_RADIUS;
                        }
                        
                }
        }
}


?>