<?php
/* --------------------------------------------------------------
   $Id: compatibility.php 950 2005-05-14 16:45:21Z mz $   

   XT-Commerce - community made shopping
   http://www.xt-commerce.com

   Copyright (c) 2003 XT-Commerce
   --------------------------------------------------------------
   based on: 
   (c) 2000-2001 The Exchange Project  (earlier name of osCommerce)
   (c) 2002-2003 osCommerce(compatibility.php,v 1.8 2003/04/09); www.oscommerce.com 
   (c) 2003	 nextcommerce (compatibility.php,v 1.6 2003/08/18); www.nextcommerce.org

   Released under the GNU General Public License 
   --------------------------------------------------------------*/
defined( '_VALID_XTC' ) or die( 'Direct Access to this location is not allowed.' );
  ////
  // Recursively handle magic_quotes_gpc turned off.
  // This is due to the possibility of have an array in
  // $HTTP_xxx_VARS
  // Ie, products attributes
  function do_magic_quotes_gpc(&$ar) {
    if (!is_array($ar)) return;

    while (list($key, $value) = each($ar)) {
      if (is_array($value)) {
        do_magic_quotes_gpc($value);
      } else {
        $ar[$key] = addslashes($value);
      }
    }
  }

  // $HTTP_xxx_VARS are always set on php4
  if (!is_array($_GET)) $_GET = array();
  if (!is_array($_POST)) $_POST = array();
  if (!is_array($_COOKIE)) $_COOKIE = array();

  // handle magic_quotes_gpc turned off.
  if (!get_magic_quotes_gpc()) {
    do_magic_quotes_gpc($_GET);
    do_magic_quotes_gpc($_POST);
    do_magic_quotes_gpc($_COOKIE);
  }

  if (!function_exists('is_numeric')) {
    function is_numeric($param) {
      return ereg("^[0-9]{1,50}.?[0-9]{0,50}$", $param);
    }
  }

  if (!function_exists('is_uploaded_file')) {
    function is_uploaded_file($filename) {
      if (!$tmp_file = get_cfg_var('upload_tmp_dir')) {
        $tmp_file = dirname(tempnam('', ''));
      }

      if (strchr($tmp_file, '/')) {
        if (substr($tmp_file, -1) != '/') $tmp_file .= '/';
      } elseif (strchr($tmp_file, '\\')) {
        if (substr($tmp_file, -1) != '\\') $tmp_file .= '\\';
      }

      return file_exists($tmp_file . basename($filename));
    }
  }

  if (!function_exists('move_uploaded_file')) {
    function move_uploaded_file($file, $target) {
      return copy($file, $target);
    }
  }

  if (!function_exists('checkdnsrr')) {
    function checkdnsrr($host, $type) {
      if(xtc_not_null($host) && xtc_not_null($type)) {
        @exec("nslookup -type=$type $host", $output);
        while(list($k, $line) = each($output)) {
          if(eregi("^$host", $line)) {
            return true;
          }
        }
      }
      return false;
    }
  }
?>