class.ilLDAPRoleAssignmentRule.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. |
        +-----------------------------------------------------------------------------+
*/

class ilLDAPRoleAssignmentRule
{
        private static $instances = null;
        
        const TYPE_GROUP = 1;
        const TYPE_ATTRIBUTE = 2;
        const TYPE_PLUGIN = 3;
        
        private $server_id = 0;
        private $plugin_active = false;
        private $add_on_update = false;
        private $remove_on_update = false;
        private $plugin_id = 0;
        
        
        private function __construct($a_id = 0)
        {
                global $ilDB;
                
                $this->db = $ilDB;      

                $this->rule_id = $a_id;
                $this->read();
        }
        
        public static function _getInstanceByRuleId($a_rule_id)
        {
                if(isset(self::$instances[$a_rule_id]))
                {
                        return self::$instances[$a_rule_id];
                }
                return self::$instances[$a_rule_id] = new ilLDAPRoleAssignmentRule($a_rule_id);
        }
        
        public static function hasRulesForUpdate()
        {
                global $ilDB;
                
                $query = 'SELECT COUNT(*) num FROM ldap_role_assignments '.
                        'WHERE add_on_update = 1 '.
                        'OR remove_on_update = 1 ';
                $res = $ilDB->query($query);
                $row = $res->fetchRow(DB_FETCHMODE_OBJECT);
                return $row->num > 0;
        }
        
        public function matches($a_user_data)
        {
                global $ilLog;
                
                switch($this->getType())
                {
                        case self::TYPE_PLUGIN:
                                include_once './Services/LDAP/classes/class.ilLDAPRoleAssignmentRules.php';
                                return ilLDAPRoleAssignmentRules::callPlugin($this->getPluginId(), $a_user_data);
                                
                        case self::TYPE_ATTRIBUTE:
                                
                                $attn = strtolower($this->getAttributeName());
                                
                                if(!isset($a_user_data[$attn]))
                                {
                                        return false;
                                }

                                if(!is_array($a_user_data[$attn]))
                                {
                                        $attribute_val = array(0 => $a_user_data[$attn]);
                                }
                                else
                                {
                                        $attribute_val = $a_user_data[$attn];
                                }
                                
                                foreach($attribute_val as $value)
                                {
                                        if($this->wildcardCompare(trim($this->getAttributeValue()),trim($value)))
                                        {
                                                $ilLog->write(__METHOD__.': Found role mapping: '.ilObject::_lookupTitle($this->getRoleId()));
                                                return true;
                                        }
                                        /*                                      
                                        if(trim($value) == trim($this->getAttributeValue()))
                                        {
                                                $ilLog->write(__METHOD__.': Found role mapping: '.ilObject::_lookupTitle($this->getRoleId()));
                                                return true;
                                        }
                                        */
                                }
                                return false;

                        case self::TYPE_GROUP:
                                return $this->isGroupMember($a_user_data);
                                
                }
        }
        
        protected function wildcardCompare($a_str1, $a_str2)
        {
                $pattern = str_replace('*','.*?', $a_str1);
                $GLOBALS['ilLog']->write(__METHOD__.': Replace pattern:'. $pattern.' => '.$a_str2);
                return (bool) preg_match('/^'.$pattern.'$/i',$a_str2);
        }
        
        private function isGroupMember($a_user_data)
        {
                global $ilLog;
                
                
                if($this->isMemberAttributeDN())
                {
                        $user_cmp = $a_user_data['dn'];
                }
                else
                {
                        $user_cmp = $a_user_data['ilExternalAccount'];
                }
                
                include_once('Services/LDAP/classes/class.ilLDAPQuery.php');
                include_once('Services/LDAP/classes/class.ilLDAPServer.php');
                                
                $server = ilLDAPServer::getInstanceByServerId(ilLDAPServer::_getFirstActiveServer());
                
                try
                {
                        $query = new ilLDAPQuery($server);
                        $query->bind();
                        $res = $query->query($this->getDN(),
                                                                sprintf('(%s=%s)',
                                                                $this->getMemberAttribute(),
                                                                $user_cmp),
                                                        IL_LDAP_SCOPE_BASE,
                                                        array('dn'));
                        return $res->numRows() ? true : false;
                }
                catch(ilLDAPQueryException $e)
                {
                        $ilLog->write(__METHOD__.': Caught Exception: '.$e->getMessage());
                        return false;
                }
        }
        
        
        
        public function _getRules($a_server_id)
        {
                global $ilDB;
                
                $query = "SELECT rule_id FROM ldap_role_assignments ".
                                "WHERE server_id = ".$ilDB->quote($a_server_id,'integer');
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $rules[] = self::_getInstanceByRuleId($row->rule_id);
                }
                return $rules ? $rules : array();
        }
        
        public function setRoleId($a_role_id)
        {
                $this->role_id = $a_role_id;    
        }
        
        public function getRoleId()
        {
                return $this->role_id;
        }
        
        public function getRuleId()
        {
                return $this->rule_id;
        }
        
        public function setServerId($a_id)
        {
                $this->server_id = $a_id;
        }
        
        public function getServerId()
        {
                return $this->server_id;
        }
        
        public function setType($a_type)
        {
                $this->type = $a_type;
        }
        
        public function getType()
        {
                return $this->type;
        }
        
        public function setDN($a_dn)
        {
                $this->dn = $a_dn;
        }
        
        public function getDN()
        {
                return $this->dn;
        }
        
        public function setMemberAttribute($a_attribute)
        {
                $this->member_attribute = $a_attribute;
        }
        
        public function getMemberAttribute()
        {
                return $this->member_attribute;
        }
        
        public function setMemberIsDN($a_status)
        {
                $this->member_is_dn = $a_status;
        }
        
        public function isMemberAttributeDN()
        {
                return (bool) $this->member_is_dn;
        }
        
        public function setAttributeName($a_name)
        {
                $this->attribute_name = $a_name;
        }
        
        public function getAttributeName()
        {
                return $this->attribute_name;
        }
        
        public function setAttributeValue($a_value)
        {
                $this->attribute_value = $a_value;
        }
        
        public function getAttributeValue()
        {
                return $this->attribute_value;
        }
        
        public function enableAddOnUpdate($a_status)
        {
                $this->add_on_update = $a_status;
        }
        
        public function isAddOnUpdateEnabled()
        {
                return (bool) $this->add_on_update;
        }
        
        public function enableRemoveOnUpdate($a_status)
        {
                $this->remove_on_update = $a_status;
        }
        
        public function isRemoveOnUpdateEnabled()
        {
                return (bool) $this->remove_on_update;
        }
        
        public function setPluginId($a_id)
        {
                $this->plugin_id = $a_id;
        }
        
        public function getPluginId()
        {
                return $this->plugin_id;
        }
        
        public function isPluginActive()
        {
                return (bool) $this->getType() == self::TYPE_PLUGIN;
        }
        
        
        public function conditionToString()
        {
                global $lng;
                
                switch($this->getType())
                {
                        case self::TYPE_PLUGIN:
                                return $lng->txt('ldap_plugin_id').': '.$this->getPluginId();
                        
                        case self::TYPE_GROUP:
                                $dn_arr = explode(',',$this->getDN());
                                return $dn_arr[0];
                                
                        
                        case self::TYPE_ATTRIBUTE:
                                return $this->getAttributeName().'='.$this->getAttributeValue();
                }
        }
        
        
        public function create()
        {
                global $ilDB;
                
                $next_id = $ilDB->nextId('ldap_role_assignments');

                $query = "INSERT INTO ldap_role_assignments (server_id,rule_id,type,dn,attribute,isdn,att_name,att_value,role_id, ".
                        "add_on_update, remove_on_update, plugin_id ) ".
                        "VALUES( ".
                        $this->db->quote($this->getServerId(),'integer').", ".
                        $this->db->quote($next_id,'integer').", ".
                        $this->db->quote($this->getType(),'integer').", ".
                        $this->db->quote($this->getDN(),'text').", ".
                        $this->db->quote($this->getMemberAttribute(),'text').", ".
                        $this->db->quote($this->isMemberAttributeDN(),'integer').", ".
                        $this->db->quote($this->getAttributeName(),'text').", ".
                        $this->db->quote($this->getAttributeValue(),'text').", ".
                        $this->db->quote($this->getRoleId(),'integer').", ".
                        $this->db->quote($this->isAddOnUpdateEnabled(), 'integer').', '.
                        $this->db->quote($this->isRemoveOnUpdateEnabled(), 'integer').', '.
                        $this->db->quote($this->getPluginId(),'integer').' '.
                        ")";
                $res = $ilDB->manipulate($query);
                $this->rule_id = $next_id;
                                
                return true;
        }

        public function update()
        {
                global $ilDB;
                
                $query = "UPDATE ldap_role_assignments ".
                        "SET server_id = ".$this->db->quote($this->getServerId(),'integer').", ".
                        "type = ".$this->db->quote($this->getType(),'integer').", ".
                        "dn = ".$this->db->quote($this->getDN(),'text').", ".
                        "attribute = ".$this->db->quote($this->getMemberAttribute(),'text').", ".
                        "isdn = ".$this->db->quote($this->isMemberAttributeDN(),'integer').", ".
                        "att_name = ".$this->db->quote($this->getAttributeName(),'text').", ".
                        "att_value = ".$this->db->quote($this->getAttributeValue(),'text').", ".
                        "role_id = ".$this->db->quote($this->getRoleId(),'integer').", ".
                        "add_on_update = ".$this->db->quote($this->isAddOnUpdateEnabled(),'integer').', '.
                        'remove_on_update = '.$this->db->quote($this->isRemoveOnUpdateEnabled(),'integer').', '.
                        'plugin_id = '.$this->db->quote($this->getPluginId(),'integer').' '.
                        "WHERE rule_id = ".$this->db->quote($this->getRuleId(),'integer')." ";
                $res = $ilDB->manipulate($query);                       
                return true;
        }
        
        public function validate()
        {
                global $ilErr;
                
                $ilErr->setMessage('');
                
                if(!$this->getRoleId())
                {
                        $ilErr->setMessage('fill_out_all_required_fields');
                        return false;
                }
                switch($this->getType())
                {
                        case self::TYPE_GROUP:
                                if(!strlen($this->getDN()) or !strlen($this->getMemberAttribute()))
                                {
                                        $ilErr->setMessage('fill_out_all_required_fields');
                                        return false;
                                }
                                break;
                        case self::TYPE_ATTRIBUTE:
                                if(!strlen($this->getAttributeName()) or !strlen($this->getAttributeValue()))
                                {
                                        $ilErr->setMessage('fill_out_all_required_fields');
                                        return false;
                                }
                                break;
                                
                        case self::TYPE_PLUGIN:
                                if(!$this->getPluginId())
                                {
                                        $ilErr->setMessage('ldap_err_missing_plugin_id');
                                        return false;
                                }
                                break;
                                
                        default:
                                $ilErr->setMessage('ldap_no_type_given');
                                return false;
                }
                return true;
        }
                
        public function delete()
        {
                global $ilDB;
                
                $query = "DELETE FROM ldap_role_assignments ".
                        "WHERE rule_id = ".$this->db->quote($this->getRuleId(),'integer')." ";
                $res = $ilDB->manipulate($query);
                return true;
                        
        }
        private function read()
        {
                global $ilDB;
                
                $query = "SELECT * FROM ldap_role_assignments ".
                        "WHERE rule_id = ".$this->db->quote($this->getRuleId(),'integer')." ";
                
                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->setServerId($row->server_id);
                        $this->setType($row->type);
                        $this->setDN($row->dn);
                        $this->setMemberAttribute($row->attribute);
                        $this->setMemberIsDN($row->isdn);
                        $this->setAttributeName($row->att_name);
                        $this->setAttributeValue($row->att_value);
                        $this->setRoleId($row->role_id);
                        $this->enableAddOnUpdate($row->add_on_update);
                        $this->enableRemoveOnUpdate($row->remove_on_update);
                        $this->setPluginId($row->plugin_id);
                }
        }
}
?>