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($a_username = '')
        {
                if(!strlen($a_username))
                {
                        return $this->position ? $this->position : array();             
                }
                $sorted = array();
                
                ilLoggerFactory::getLogger('auth')->dump($this->position, ilLogLevel::DEBUG);
                
                foreach($this->position as $auth_key)
                {
                        include_once './Services/LDAP/classes/class.ilLDAPServer.php';
                        $sid = ilLDAPServer::getServerIdByAuthMode($auth_key);
                        if($sid)
                        {
                                $server = ilLDAPServer::getInstanceByServerId($sid);
                                ilLoggerFactory::getLogger('auth')->debug('Validating username filter for ' . $server->getName());
                                if(strlen($server->getUsernameFilter()))
                                {
                                        //#17731
                                        $pattern = str_replace('*','.*?', $server->getUsernameFilter());

                                        if(preg_match('/^'.$pattern.'$/', $a_username))
                                        {
                                                ilLoggerFactory::getLogger('auth')->debug('Filter matches for ' . $a_username);
                                                array_unshift($sorted, $auth_key);
                                                continue;
                                        }
                                        ilLoggerFactory::getLogger('auth')->debug('Filter matches not for ' . $a_username. ' <-> ' . $server->getUsernameFilter());
                                }
                        }
                        $sorted[] = $auth_key;
                }
                
                ilLoggerFactory::getLogger('auth')->dump($this->position, ilLogLevel::DEBUG);
                
                return (array) $sorted;
        }
        
        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()
        {
                global $ilSetting;
                
                $this->kind = $this->settings->get('kind',self::TYPE_MANUAL);
                
                // begin-patch ldap_multiple
                include_once('Services/LDAP/classes/class.ilLDAPServer.php');
                // end-patch ldap_multiple
                
                include_once('Services/Radius/classes/class.ilRadiusSettings.php');
                $rad_settings = ilRadiusSettings::_getInstance();
                $rad_active = $rad_settings->isActive();
                
                $soap_active = $ilSetting->get('soap_auth_active',false);

                // apache settings
                $apache_settings = new ilSetting('apache_auth');
                $apache_active = $apache_settings->get('apache_enable_auth');

                // Check if active
                // begin-patch ldap_multiple
                $i = 0;
                while(true)
                {
                        $auth_mode = $this->settings->get((string) $i++,FALSE);
                        if($auth_mode === FALSE)
                        {
                                break;
                        }
                        if($auth_mode)
                        {
                                // begin-patch ldap_multiple
                                switch((int) $auth_mode)
                                {
                                        case AUTH_LOCAL:
                                                $this->position[] = $auth_mode;
                                                break;
                                        
                                        case AUTH_LDAP:
                                                $auth_id = ilLDAPServer::getServerIdByAuthMode($auth_mode);
                                                $server = ilLDAPServer::getInstanceByServerId($auth_id);
                                                
                                                if($server->isActive())
                                                {
                                                        $this->position[] = $auth_mode;
                                                }
                                                break;
                                                
                                        case AUTH_RADIUS:
                                                if($rad_active)
                                                {
                                                        $this->position[] = $auth_mode;  
                                                }
                                                break;
                                        
                                        case AUTH_SOAP:
                                                if($soap_active)
                                                {
                                                        $this->position[] = $auth_mode;
                                                } 
                                                break;

                                        case AUTH_APACHE:
                                                if($apache_active)
                                                {
                                                        $this->position[] = $auth_mode;
                                                }
                                                break;
                                                
                                        // begin-patch auth_plugin
                                        default:
                                                foreach(ilAuthUtils::getAuthPlugins() as $pl)
                                                {
                                                        if($pl->isAuthActive($auth_mode))
                                                        {
                                                                $this->position[] = $auth_mode;
                                                        }
                                                }
                                                break;
                                        // end-patch auth_plugin
                                                
                                }
                        }
                }
                // end-patch ldap_multiple

                // Append missing active auth modes
                if(!in_array(AUTH_LOCAL,$this->position))
                {
                        $this->position[] = AUTH_LOCAL;
                }
                // begin-patch ldap_multiple
                foreach(ilLDAPServer::_getActiveServerList() as $sid)
                {
                        $server = ilLDAPServer::getInstanceByServerId($sid);
                        if($server->isActive())
                        {
                                if(!in_array(AUTH_LDAP.'_'.$sid, $this->position))
                                {
                                        $this->position[] = (AUTH_LDAP.'_'.$sid);
                                }
                        }
                                        
                }
                // end-patch ldap_multiple
                if($rad_active)
                {
                        if(!in_array(AUTH_RADIUS,$this->position))
                        {
                                $this->position[] = AUTH_RADIUS;
                        }
                        
                }
                if($soap_active)
                {
                        if(!in_array(AUTH_SOAP,$this->position))
                        {
                                $this->position[] = AUTH_SOAP;
                        }
                }
                if($apache_active)
                {
                        if(!in_array(AUTH_APACHE,$this->position))
                        {
                                $this->position[] = AUTH_APACHE;
                        }
                }
                // begin-patch auth_plugin
                foreach(ilAuthUtils::getAuthPlugins() as $pl)
                {
                        foreach($pl->getAuthIds() as $auth_id)
                        {
                                if($pl->isAuthActive($auth_id))
                                {
                                        if(!in_array($auth_id, $this->position))
                                        {
                                                $this->position[] = $auth_id;
                                        }
                                }
                        }
                }
                // end-patch auth_plugin
        }
}


?>