<?php

 /**

 * File: Header.Examine.class.php

 * This is the HTTP Header Examine class for the Geeklog Spam-X plugin

 *

 * Copyright (C) 2005-2009 by the following authors:

 * Author    Dirk Haun <dirk AT haun-online DOT de>

 *

 * based on the works of Tom Willett <tomw AT pigstye DOT net>

 *

 * Licensed under the GNU General Public License

 *

 * @package Spam-X

 * @subpackage Modules

 */

 if (strpos(strtolower($_SERVER['PHP_SELF']), 'header.examine.class.php') !== false) {

     die('This file can not be used on its own!');

 }

 /**

 * Include Abstract Examine Class

 */

 require_once $_CONF['path'] . 'plugins/spamx/' . 'BaseCommand.class.php';

 /**

 * Examines Post according to HTTP Headers

 *

 * @author Dirk Haun, dirk AT haun-online DOT de

 *

 * @package Spam-X

 *

 */

 class Header extends BaseCommand {

     /**

      * No Constructor Use BaseCommand constructor

      */

     /**

      * Here we do the work

      */

     function execute($comment)

     {

         global $_CONF, $_TABLES, $_USER, $LANG_SX00, $result;

         if (isset ($_USER['uid']) && ($_USER['uid'] > 1)) {

             $uid = $_USER['uid'];

         } else {

             $uid = 1;

         }

         // get HTTP headers of the current request

         if (function_exists ('getallheaders')) {

             $headers = getallheaders ();

         } else {

             // if getallheaders() is not available, we have to fake it using

             // the $_SERVER['HTTP_...'] values

             $headers = array ();

             foreach ($_SERVER as $key => $content) {

                 if (substr ($key, 0, 4) == 'HTTP') {

                     $name = str_replace ('_', '-', substr ($key, 5));

                     $headers[$name] = $content;

                 }

             }

         }

         $result = DB_query ("SELECT value FROM {$_TABLES['spamx']} WHERE name='HTTPHeader'", 1);

         $nrows = DB_numRows ($result);

         $ans = 0;

         for ($i = 0; $i < $nrows; $i++) {

             list ($entry) = DB_fetchArray ($result);

             $v = explode (':', $entry);

             $name = trim ($v[0]);

             $value = trim ($v[1]);

             $value = str_replace ('#', '\\#', $value);

             foreach ($headers as $key => $content) {

                 if (strcasecmp ($name, $key) == 0) {

                     if (preg_match ("#$value#i", $content)) {

                         $ans = 1; // quit on first positive match

                         SPAMX_log ($LANG_SX00['foundspam'] . $entry .

                                    $LANG_SX00['foundspam2'] . $uid . 

                                    $LANG_SX00['foundspam3'] .

                                    $_SERVER['REMOTE_ADDR']);

                         break;

                     }

                 }

             }

         }

         return $ans;

     }

 }

 ?>