class.ilCron.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2009 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 pear
//require_once("DB.php");

class ilCron
{
        var $db;
        var $log;

        function ilCron(&$db)
        {
                define('DEBUG',1);
                define('SOCKET_TIMEOUT',5);

                $this->db = $db;
                
                $GLOBALS["ilDB"] = $this->db;
                include_once './Services/Administration/classes/class.ilSetting.php';
                $this->setting = new ilSetting("common", true);

        }

        function initLog($path,$file,$client)
        {
                include_once './Services/Logging/classes/class.ilLog.php';

                $this->log =& new ilLog($path,$file,$client);

                return true;
        }

        function txt($language,$key,$module = 'common')
        {
                include_once './Services/Language/classes/class.ilLanguage.php';
                return ilLanguage::_lookupEntry($language, $module, $key);
        }

        
        function start()
        {
                // add here other checks
                if($this->__readSetting('cron_user_check'))
                {
                        $this->__checkUserAccounts();
                }
                if($this->__readSetting('cron_link_check'))
                {
                        $this->__checkLinks();
                }
        }

        function __checkUserAccounts()
        {
                global $ilDB;
                
                $two_weeks_in_seconds = 60 * 60 * 24 * 14;

                $this->log->write('Cron: Start checkUserAccounts()');
                $query = "SELECT * FROM usr_data,usr_pref ".
                        "WHERE time_limit_message = ".$ilDB->quote(0, "integer")." ".
                        "AND time_limit_unlimited = ".$ilDB->quote(0, "integer")." ".
                        "AND time_limit_from < ".$ilDB->quote(time(), "integer")." ".
                        "AND time_limit_until > ".$ilDB->quote($two_weeks_in_seconds, "integer")." ".
                        "AND usr_data.usr_id = usr_pref.usr_id ".
                        "AND keyword = ".$ilDB->quote("language", "text");

                $res = $ilDB->query($query);

                while($row = $ilDB->fetchObject($res))
                {
                        include_once './Services/Mail/classes/class.ilMimeMail.php';

                        $data['expires'] = $row->time_limit_until;
                        $data['email'] = $row->email;
                        $data['login'] = $row->login;
                        $data['usr_id'] = $row->usr_id;
                        $data['language'] = $row->value;
                        $data['owner'] = $row->time_limit_owner;

                        // Get owner
                        $query = "SELECT email FROM usr_data WHERE usr_id = ".$ilDB->quote($data['owner'], "integer");
                        
                        $res2 = $this->db->query($query);
                        while($row = $res2->fetchRow(DB_FETCHMODE_OBJECT))
                        {
                                $from = $row->email;
                        }

                        // Send mail
                        $mail =& new ilMimeMail();
                        
                        $mail->From($from);
                        $mail->To($data['email']);
                        $mail->Subject($this->txt($data['language'],'account_expires_subject'));
                        $mail->Body($this->txt($data['language'],'account_expires_body')." ".strftime('%Y-%m-%d %R',$data['expires']));
                        $mail->send();

                        // set status 'mail sent'
                        $query = "UPDATE usr_data SET time_limit_message = ".$ilDB->quote(1, "integer").
                                " WHERE usr_id = ".$ilDB->quote($data['usr_id'], "integer");
                        $ilDB->manipulate($query);
                        
                        // Send log message
                        $this->log->write('Cron: (checkUserAccounts()) sent message to '.$data['login'].'.');
                }
                
        }


        function __checkLinks()
        {
                include_once'./classes/class.ilLinkChecker.php';

                $link_checker =& new ilLinkChecker($this->db);
                $link_checker->setMailStatus(true);

                $invalid = $link_checker->checkLinks();
                foreach($link_checker->getLogMessages() as $message)
                {
                        $this->log->write($message);
                }

                return true;
        }

        function __readSetting($a_keyword)
        {
                return $this->setting->get($a_keyword);
/*              $query = "SELECT * FROM sett ings ".
                        "WHERE keyword = '".$a_keyword."'";

                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        return $row->value ? $row->value : 0;
                }
                return 0;       */
        }
}
?>