Location: PHPKode > scripts > e-cart Free Shopping Cart Software Script Web Store > e-cart-free-shopping-cart-software-script-web-store/includes/application_top.php
<?php
/*

***********************************************************************************
***********************************************************************************

  This software is copyrighted by www.e-cart.biz. 
  It is not freeware and may not be distributed in 
  whole or in part without permission. 
    
  Professional versions of e-cart must be licensed and registered.
  Unlawful copies of e-cart will not be supported.
  For more information about your e-cart or to become a reseller or vendor,
  please contact hide@address.com
  
  This is a professional storefront that will enhance the online business
  of any storefront and make backend administration extremely easy and
  user-friendly. Novices will be able to comfortably navigate their new
  stores in a matter of minutes instead of hours or days.
    
  Extensive rescripting and programming has been intricately included 
  throughout this software and thus renders the original version inseparable.
  
  This copyright tag may not be lawfully removed and this software
  may not be lawfully redistributed without permission.
  
***********************************************************************************
***********************************************************************************

$Id: application_top.php,v 1.280 2003/07/12 09:38:07 hpdl Exp $

  osCommerce, Open Source E-Commerce Solutions
  http://www.oscommerce.com

  Copyright (c) 2003 osCommerce

  Released under the GNU General Public License
*/

// start the timer for the page parse time log
  define('PAGE_PARSE_START_TIME', microtime());

// set the level of error reporting
  error_reporting(E_ALL & ~E_NOTICE);

// check if register_globals is enabled.
// since this is a temporary measure this message is hardcoded. The requirement will be removed before 2.2 is finalized.
  if (function_exists('ini_get')) {
    ini_get('register_globals') or exit('Server Requirement Error: register_globals is disabled in your PHP configuration. This can be enabled in your php.ini configuration file or in the .htaccess file in your catalog directory.');
  }

// Set the local configuration parameters - mainly for developers
  if (file_exists('includes/local/configure.php')) include('includes/local/configure.php');

// include server parameters
  require('includes/configure.php');

  if (strlen(DB_SERVER) < 1) {
    if (is_dir('install')) {
      header('Location: install/index.php');
    }
  }

// define the project version
  define('PROJECT_VERSION', '');

// set the type of request (secure or not)
  $request_type = (getenv('HTTPS') == 'on') ? 'SSL' : 'NONSSL';

// set php_self in the local scope
  if (!isset($PHP_SELF)) $PHP_SELF = $HTTP_SERVER_VARS['PHP_SELF'];

  if ($request_type == 'NONSSL') {
    define('DIR_WS_CATALOG', DIR_WS_HTTP_CATALOG);
  } else {
    define('DIR_WS_CATALOG', DIR_WS_HTTPS_CATALOG);
  }

// include the list of project filenames
  require(DIR_WS_INCLUDES . 'filenames.php');

// include the list of project database tables
  require(DIR_WS_INCLUDES . 'database_tables.php');

// customization for the design layout
  define('BOX_WIDTH', 125); // how wide the boxes should be in pixels (default: 125)

// include the database functions
  require(DIR_WS_FUNCTIONS . 'database.php');

// make a connection to the database... now
  tep_db_connect() or die('Unable to connect to database server!');

// set the application parameters
  $configuration_query = tep_db_query('select configuration_key as cfgKey, configuration_value as cfgValue from ' . TABLE_CONFIGURATION);
  while ($configuration = tep_db_fetch_array($configuration_query)) {
    define($configuration['cfgKey'], $configuration['cfgValue']);
  }

// if gzip_compression is enabled, start to buffer the output
  if ( (GZIP_COMPRESSION == 'true') && ($ext_zlib_loaded = extension_loaded('zlib')) && (PHP_VERSION >= '4') ) {
    if (($ini_zlib_output_compression = (int)ini_get('zlib.output_compression')) < 1) {
      if (PHP_VERSION >= '4.0.4') {
        ob_start('ob_gzhandler');
      } else {
        include(DIR_WS_FUNCTIONS . 'gzip_compression.php');
        ob_start();
        ob_implicit_flush();
      }
    } else {
      ini_set('zlib.output_compression_level', GZIP_LEVEL);
    }
  }

// set the HTTP GET parameters manually if search_engine_friendly_urls is enabled
  if (SEARCH_ENGINE_FRIENDLY_URLS == 'true') {
    if (strlen(getenv('PATH_INFO')) > 1) {
      $GET_array = array();
      $PHP_SELF = str_replace(getenv('PATH_INFO'), '', $PHP_SELF);
      $vars = explode('/', substr(getenv('PATH_INFO'), 1));
      for ($i=0, $n=sizeof($vars); $i<$n; $i++) {
        if (strpos($vars[$i], '[]')) {
          $GET_array[substr($vars[$i], 0, -2)][] = $vars[$i+1];
        } else {
          $HTTP_GET_VARS[$vars[$i]] = $vars[$i+1];
        }
        $i++;
      }

      if (sizeof($GET_array) > 0) {
        while (list($key, $value) = each($GET_array)) {
          $HTTP_GET_VARS[$key] = $value;
        }
      }
    }
  }

// define general functions used application-wide
  require(DIR_WS_FUNCTIONS . 'general.php');
  require(DIR_WS_FUNCTIONS . 'html_output.php');

// set the cookie domain
  $cookie_domain = (($request_type == 'NONSSL') ? HTTP_COOKIE_DOMAIN : HTTPS_COOKIE_DOMAIN);
  $cookie_path = (($request_type == 'NONSSL') ? HTTP_COOKIE_PATH : HTTPS_COOKIE_PATH);

// include cache functions if enabled
  if (USE_CACHE == 'true') include(DIR_WS_FUNCTIONS . 'cache.php');

// include shopping cart class
  require(DIR_WS_CLASSES . 'shopping_cart.php');

// include navigation history class
  require(DIR_WS_CLASSES . 'navigation_history.php');

// some code to solve compatibility issues
  require(DIR_WS_FUNCTIONS . 'compatibility.php');

// check if sessions are supported, otherwise use the php3 compatible session class
  if (!function_exists('session_start')) {
    define('PHP_SESSION_NAME', 'osCsid');
    define('PHP_SESSION_PATH', $cookie_path);
    define('PHP_SESSION_DOMAIN', $cookie_domain);
    define('PHP_SESSION_SAVE_PATH', SESSION_WRITE_DIRECTORY);

    include(DIR_WS_CLASSES . 'sessions.php');
  }

// define how the session functions will be used
  require(DIR_WS_FUNCTIONS . 'sessions.php');

// set the session name and save path
  tep_session_name('osCsid');
  tep_session_save_path(SESSION_WRITE_DIRECTORY);

// set the session cookie parameters
   if (function_exists('session_set_cookie_params')) {
    session_set_cookie_params(0, $cookie_path, $cookie_domain);
  } elseif (function_exists('ini_set')) {
    ini_set('session.cookie_lifetime', '0');
    ini_set('session.cookie_path', $cookie_path);
    ini_set('session.cookie_domain', $cookie_domain);
  }

// set the session ID if it exists
   if (isset($HTTP_POST_VARS[tep_session_name()])) {
     tep_session_id($HTTP_POST_VARS[tep_session_name()]);
   } elseif ( ($request_type == 'SSL') && isset($HTTP_GET_VARS[tep_session_name()]) ) {
     tep_session_id($HTTP_GET_VARS[tep_session_name()]);
   }

// start the session
  $session_started = false;
  if (SESSION_FORCE_COOKIE_USE == 'True') {
    tep_setcookie('cookie_test', 'please_accept_for_session', time()+60*60*24*30, $cookie_path, $cookie_domain);

    if (isset($HTTP_COOKIE_VARS['cookie_test'])) {
      tep_session_start();
      $session_started = true;
    }
  } elseif (SESSION_BLOCK_SPIDERS == 'True') {
    $user_agent = strtolower(getenv('HTTP_USER_AGENT'));
    $spider_flag = false;

    if (tep_not_null($user_agent)) {
      $spiders = file(DIR_WS_INCLUDES . 'spiders.txt');

      for ($i=0, $n=sizeof($spiders); $i<$n; $i++) {
        if (tep_not_null($spiders[$i])) {
          if (is_integer(strpos($user_agent, trim($spiders[$i])))) {
            $spider_flag = true;
            break;
          }
        }
      }
    }

    if ($spider_flag == false) {
      tep_session_start();
      $session_started = true;
    }
  } else {
    tep_session_start();
    $session_started = true;
  }

// set SID once, even if empty
  $SID = (defined('SID') ? SID : '');

// verify the ssl_session_id if the feature is enabled
  if ( ($request_type == 'SSL') && (SESSION_CHECK_SSL_SESSION_ID == 'True') && (ENABLE_SSL == true) && ($session_started == true) ) {
    $ssl_session_id = getenv('SSL_SESSION_ID');
    if (!tep_session_is_registered('SSL_SESSION_ID')) {
      $SESSION_SSL_ID = $ssl_session_id;
      tep_session_register('SESSION_SSL_ID');
    }

    if ($SESSION_SSL_ID != $ssl_session_id) {
      tep_session_destroy();
      tep_redirect(tep_href_link(FILENAME_SSL_CHECK));
    }
  }

// verify the browser user agent if the feature is enabled
  if (SESSION_CHECK_USER_AGENT == 'True') {
    $http_user_agent = getenv('HTTP_USER_AGENT');
    if (!tep_session_is_registered('SESSION_USER_AGENT')) {
      $SESSION_USER_AGENT = $http_user_agent;
      tep_session_register('SESSION_USER_AGENT');
    }

    if ($SESSION_USER_AGENT != $http_user_agent) {
      tep_session_destroy();
      tep_redirect(tep_href_link(FILENAME_LOGIN));
    }
  }

// verify the IP address if the feature is enabled
  if (SESSION_CHECK_IP_ADDRESS == 'True') {
    $ip_address = tep_get_ip_address();
    if (!tep_session_is_registered('SESSION_IP_ADDRESS')) {
      $SESSION_IP_ADDRESS = $ip_address;
      tep_session_register('SESSION_IP_ADDRESS');
    }

    if ($SESSION_IP_ADDRESS != $ip_address) {
      tep_session_destroy();
      tep_redirect(tep_href_link(FILENAME_LOGIN));
    }
  }

// create the shopping cart & fix the cart if necesary
  if (tep_session_is_registered('cart') && is_object($cart)) {
    if (PHP_VERSION < 4) {
      $broken_cart = $cart;
      $cart = new shoppingCart;
      $cart->unserialize($broken_cart);
    }
  } else {
    tep_session_register('cart');
    $cart = new shoppingCart;
  }

// include currencies class and create an instance
  require(DIR_WS_CLASSES . 'currencies.php');
  $currencies = new currencies();

// include the mail classes
  require(DIR_WS_CLASSES . 'mime.php');
  require(DIR_WS_CLASSES . 'email.php');

// set the language
  if (!tep_session_is_registered('language') || isset($HTTP_GET_VARS['language'])) {
    if (!tep_session_is_registered('language')) {
      tep_session_register('language');
      tep_session_register('languages_id');
    }

    include(DIR_WS_CLASSES . 'language.php');
    $lng = new language();

    if (isset($HTTP_GET_VARS['language']) && tep_not_null($HTTP_GET_VARS['language'])) {
      $lng->set_language($HTTP_GET_VARS['language']);
    } else {
      $lng->get_browser_language();
    }

    $language = $lng->language['directory'];
    $languages_id = $lng->language['id'];
  }

// include the language translations
  require(DIR_WS_LANGUAGES . $language . '.php');

// currency
  if (!tep_session_is_registered('currency') || isset($HTTP_GET_VARS['currency']) || ( (USE_DEFAULT_LANGUAGE_CURRENCY == 'true') && (LANGUAGE_CURRENCY != $currency) ) ) {
    if (!tep_session_is_registered('currency')) tep_session_register('currency');

    if (isset($HTTP_GET_VARS['currency'])) {
      if (!$currency = tep_currency_exists($HTTP_GET_VARS['currency'])) $currency = (USE_DEFAULT_LANGUAGE_CURRENCY == 'true') ? LANGUAGE_CURRENCY : DEFAULT_CURRENCY;
    } else {
      $currency = (USE_DEFAULT_LANGUAGE_CURRENCY == 'true') ? LANGUAGE_CURRENCY : DEFAULT_CURRENCY;
    }
  }

// navigation history
  if (tep_session_is_registered('navigation')) {
    if (PHP_VERSION < 4) {
      $broken_navigation = $navigation;
      $navigation = new navigationHistory;
      $navigation->unserialize($broken_navigation);
    }
  } else {
    tep_session_register('navigation');
    $navigation = new navigationHistory;
  }
  $navigation->add_current_page();

// Shopping cart actions
  if (isset($HTTP_GET_VARS['action'])) {
// redirect the customer to a friendly cookie-must-be-enabled page if cookies are disabled
    if ($session_started == false) {
      tep_redirect(tep_href_link(FILENAME_COOKIE_USAGE));
    }

    if (DISPLAY_CART == 'true') {
      $goto =  FILENAME_SHOPPING_CART;
      $parameters = array('action', 'cPath', 'products_id', 'pid');
    } else {
      $goto = basename($PHP_SELF);
      if ($HTTP_GET_VARS['action'] == 'buy_now') {
        $parameters = array('action', 'pid', 'products_id');
      } else {
        $parameters = array('action', 'pid');
      }
    }
    switch ($HTTP_GET_VARS['action']) {
      // customer wants to update the product quantity in their shopping cart
      case 'update_product' : for ($i=0, $n=sizeof($HTTP_POST_VARS['products_id']); $i<$n; $i++) {
                                if (in_array($HTTP_POST_VARS['products_id'][$i], (is_array($HTTP_POST_VARS['cart_delete']) ? $HTTP_POST_VARS['cart_delete'] : array()))) {
                                  $cart->remove($HTTP_POST_VARS['products_id'][$i]);
                                } else {
                                  if (PHP_VERSION < 4) {
                                    // if PHP3, make correction for lack of multidimensional array.
                                    reset($HTTP_POST_VARS);
                                    while (list($key, $value) = each($HTTP_POST_VARS)) {
                                      if (is_array($value)) {
                                        while (list($key2, $value2) = each($value)) {
                                          if (ereg ("(.*)\]\[(.*)", $key2, $var)) {
                                            $id2[$var[1]][$var[2]] = $value2;
                                          }
                                        }
                                      }
                                    }
                                    $attributes = ($id2[$HTTP_POST_VARS['products_id'][$i]]) ? $id2[$HTTP_POST_VARS['products_id'][$i]] : '';
                                  } else {
                                    $attributes = ($HTTP_POST_VARS['id'][$HTTP_POST_VARS['products_id'][$i]]) ? $HTTP_POST_VARS['id'][$HTTP_POST_VARS['products_id'][$i]] : '';
                                  }
                                  $cart->add_cart($HTTP_POST_VARS['products_id'][$i], $HTTP_POST_VARS['cart_quantity'][$i], $attributes, false);
                                }
                              }
                              tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
                              break;
      // customer adds a product from the products page
      case 'add_product' :    if (isset($HTTP_POST_VARS['products_id']) && is_numeric($HTTP_POST_VARS['products_id'])) {
                                $cart->add_cart($HTTP_POST_VARS['products_id'], $cart->get_quantity(tep_get_uprid($HTTP_POST_VARS['products_id'], $HTTP_POST_VARS['id']))+1, $HTTP_POST_VARS['id']);
                              }
                              tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
                              break;
      // performed by the 'buy now' button in product listings and review page
      case 'buy_now' :        if (isset($HTTP_GET_VARS['products_id'])) {
                                if (tep_has_product_attributes($HTTP_GET_VARS['products_id'])) {
                                  tep_redirect(tep_href_link(FILENAME_PRODUCT_INFO, 'products_id=' . $HTTP_GET_VARS['products_id']));
                                } else {
                                  $cart->add_cart($HTTP_GET_VARS['products_id'], $cart->get_quantity($HTTP_GET_VARS['products_id'])+1);
                                }
                              }
                              tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
                              break;
      case 'notify' :         if (tep_session_is_registered('customer_id')) {
                                if (isset($HTTP_GET_VARS['products_id'])) {
                                  $notify = $HTTP_GET_VARS['products_id'];
                                } elseif (isset($HTTP_GET_VARS['notify'])) {
                                  $notify = $HTTP_GET_VARS['notify'];
                                } elseif (isset($HTTP_POST_VARS['notify'])) {
                                  $notify = $HTTP_POST_VARS['notify'];
                                } else {
                                  tep_redirect(tep_href_link(basename($PHP_SELF), tep_get_all_get_params(array('action', 'notify'))));
                                }
                                if (!is_array($notify)) $notify = array($notify);
                                for ($i=0, $n=sizeof($notify); $i<$n; $i++) {
                                  $check_query = tep_db_query("select count(*) as count from " . TABLE_PRODUCTS_NOTIFICATIONS . " where products_id = '" . $notify[$i] . "' and customers_id = '" . $customer_id . "'");
                                  $check = tep_db_fetch_array($check_query);
                                  if ($check['count'] < 1) {
                                    tep_db_query("insert into " . TABLE_PRODUCTS_NOTIFICATIONS . " (products_id, customers_id, date_added) values ('" . $notify[$i] . "', '" . $customer_id . "', now())");
                                  }
                                }
                                tep_redirect(tep_href_link(basename($PHP_SELF), tep_get_all_get_params(array('action', 'notify'))));
                              } else {
                                $navigation->set_snapshot();
                                tep_redirect(tep_href_link(FILENAME_LOGIN, '', 'SSL'));
                              }
                              break;
      case 'notify_remove' :  if (tep_session_is_registered('customer_id') && isset($HTTP_GET_VARS['products_id'])) {
                                $check_query = tep_db_query("select count(*) as count from " . TABLE_PRODUCTS_NOTIFICATIONS . " where products_id = '" . $HTTP_GET_VARS['products_id'] . "' and customers_id = '" . $customer_id . "'");
                                $check = tep_db_fetch_array($check_query);
                                if ($check['count'] > 0) {
                                  tep_db_query("delete from " . TABLE_PRODUCTS_NOTIFICATIONS . " where products_id = '" . $HTTP_GET_VARS['products_id'] . "' and customers_id = '" . $customer_id . "'");
                                }
                                tep_redirect(tep_href_link(basename($PHP_SELF), tep_get_all_get_params(array('action'))));
                              } else {
                                $navigation->set_snapshot();
                                tep_redirect(tep_href_link(FILENAME_LOGIN, '', 'SSL'));
                              }
                              break;
      case 'cust_order' :     if (tep_session_is_registered('customer_id') && isset($HTTP_GET_VARS['pid'])) {
                                if (tep_has_product_attributes($HTTP_GET_VARS['pid'])) {
                                  tep_redirect(tep_href_link(FILENAME_PRODUCT_INFO, 'products_id=' . $HTTP_GET_VARS['pid']));
                                } else {
                                  $cart->add_cart($HTTP_GET_VARS['pid'], $cart->get_quantity($HTTP_GET_VARS['pid'])+1);
                                }
                              }
                              tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
                              break;
    }
  }

// include the who's online functions
  require(DIR_WS_FUNCTIONS . 'whos_online.php');
  tep_update_whos_online();

// include the password crypto functions
  require(DIR_WS_FUNCTIONS . 'password_funcs.php');

// include validation functions (right now only email address)
  require(DIR_WS_FUNCTIONS . 'validations.php');

// split-page-results
  require(DIR_WS_CLASSES . 'split_page_results.php');



  $configuration_query = tep_db_query("select  configuration_key as themesKey, configuration_value as themesValue from " . TABLE_CONFIGURATION . " where configuration_key = 'SITE_THEMES'");
  $configuration = tep_db_fetch_array($configuration_query);
  define($configuration['themesKey'], $configuration['themesValue']);
  if($configuration['themesKey']==""){
  define(THEMES_STYLE, "stylesheet.css");
 
  require(DIR_WS_CLASSES . 'boxes.php'); }
  else{

  require(DIR_WS_CLASSES . 'themes_boxes.php');
  define(THEMES_STYLE, DIR_WS_CLASSES . "themes/" . SITE_THEMES . "/stylesheet.css");
  }

// auto activate and expire banners
  require(DIR_WS_FUNCTIONS . 'banner.php');
  tep_activate_banners();
  tep_expire_banners();

// auto expire special products
  require(DIR_WS_FUNCTIONS . 'specials.php');
  tep_expire_specials();

// calculate category path
  if (isset($HTTP_GET_VARS['cPath'])) {
    $cPath = $HTTP_GET_VARS['cPath'];
  } elseif (isset($HTTP_GET_VARS['products_id']) && !isset($HTTP_GET_VARS['manufacturers_id'])) {
    $cPath = tep_get_product_path($HTTP_GET_VARS['products_id']);
  } else {
    $cPath = '';
  }

  if (tep_not_null($cPath)) {
    $cPath_array = tep_parse_category_path($cPath);
    $cPath = implode('_', $cPath_array);
    $current_category_id = $cPath_array[(sizeof($cPath_array)-1)];
  } else {
    $current_category_id = 0;
  }

// include the breadcrumb class and start the breadcrumb trail
  require(DIR_WS_CLASSES . 'breadcrumb.php');
  $breadcrumb = new breadcrumb;

 // $breadcrumb->add(HEADER_TITLE_TOP, HTTP_SERVER);
  $breadcrumb->add(HEADER_TITLE_CATALOG, tep_href_link(FILENAME_DEFAULT));

// add category names or the manufacturer name to the breadcrumb trail
  if (isset($cPath_array)) {
    for ($i=0, $n=sizeof($cPath_array); $i<$n; $i++) {
      $categories_query = tep_db_query("select categories_name from " . TABLE_CATEGORIES_DESCRIPTION . " where categories_id = '" . (int)$cPath_array[$i] . "' and language_id = '" . (int)$languages_id . "'");
      if (tep_db_num_rows($categories_query) > 0) {
        $categories = tep_db_fetch_array($categories_query);
        $breadcrumb->add($categories['categories_name'], tep_href_link(FILENAME_DEFAULT, 'cPath=' . implode('_', array_slice($cPath_array, 0, ($i+1)))));
      } else {
        break;
      }
    }
  } elseif (isset($HTTP_GET_VARS['manufacturers_id'])) {
    $manufacturers_query = tep_db_query("select manufacturers_name from " . TABLE_MANUFACTURERS . " where manufacturers_id = '" . (int)$HTTP_GET_VARS['manufacturers_id'] . "'");
    if (tep_db_num_rows($manufacturers_query)) {
      $manufacturers = tep_db_fetch_array($manufacturers_query);
      $breadcrumb->add($manufacturers['manufacturers_name'], tep_href_link(FILENAME_DEFAULT, 'manufacturers_id=' . $HTTP_GET_VARS['manufacturers_id']));
    }
  }

// add the products model to the breadcrumb trail
  if (isset($HTTP_GET_VARS['products_id'])) {
    $model_query = tep_db_query("select products_name from " . TABLE_PRODUCTS_DESCRIPTION . " where products_id = '" . 

(int)$HTTP_GET_VARS['products_id'] . "'");

    if (tep_db_num_rows($model_query)) {
      $model = tep_db_fetch_array($model_query);
      $breadcrumb->add($model['products_name'], tep_href_link(FILENAME_PRODUCT_INFO, 'cPath=' . $cPath . '&products_id=' . 

$HTTP_GET_VARS['products_id']));
    }
  }

  // include the articles functions
  require(DIR_WS_FUNCTIONS . 'articles.php');
  require(DIR_WS_FUNCTIONS . 'article_header_tags.php'); 

// calculate topic path
  if (isset($HTTP_GET_VARS['tPath'])) {
    $tPath = $HTTP_GET_VARS['tPath'];
  } elseif (isset($HTTP_GET_VARS['articles_id']) && !isset($HTTP_GET_VARS['authors_id'])) {
    $tPath = tep_get_article_path($HTTP_GET_VARS['articles_id']);
  } else {
    $tPath = '';
  }

  if (tep_not_null($tPath)) {
    $tPath_array = tep_parse_topic_path($tPath);
    $tPath = implode('_', $tPath_array);
    $current_topic_id = $tPath_array[(sizeof($tPath_array)-1)];
  } else {
    $current_topic_id = 0;
  }

// add topic names or the author name to the breadcrumb trail
  if (isset($tPath_array)) {
    for ($i=0, $n=sizeof($tPath_array); $i<$n; $i++) {
      $topics_query = tep_db_query("select topics_name from " . TABLE_TOPICS_DESCRIPTION . " where topics_id = '" . (int)$tPath_array[$i] . "' and language_id = '" . (int)$languages_id . "'");
      if (tep_db_num_rows($topics_query) > 0) {
        $topics = tep_db_fetch_array($topics_query);
        $breadcrumb->add($topics['topics_name'], tep_href_link(FILENAME_ARTICLES, 'tPath=' . implode('_', array_slice($tPath_array, 0, ($i+1)))));
      } else {
        break;
      }
    }
  } elseif (isset($HTTP_GET_VARS['authors_id'])) {
    $authors_query = tep_db_query("select authors_name from " . TABLE_AUTHORS . " where authors_id = '" . (int)$HTTP_GET_VARS['authors_id'] . "'");
    if (tep_db_num_rows($authors_query)) {
      $authors = tep_db_fetch_array($authors_query);
      $breadcrumb->add('Articles by ' . $authors['authors_name'], tep_href_link(FILENAME_ARTICLES, 'authors_id=' . $HTTP_GET_VARS['authors_id']));
    }
  }

// add the articles name to the breadcrumb trail
  if (isset($HTTP_GET_VARS['articles_id'])) {
    $article_query = tep_db_query("select articles_name from " . TABLE_ARTICLES_DESCRIPTION . " where articles_id = '" . (int)$HTTP_GET_VARS['articles_id'] . "'");
    if (tep_db_num_rows($article_query)) {
      $article = tep_db_fetch_array($article_query);
      if (isset($HTTP_GET_VARS['authors_id'])) {
        $breadcrumb->add($article['articles_name'], tep_href_link(FILENAME_ARTICLE_INFO, 'authors_id=' . $HTTP_GET_VARS['authors_id'] . '&articles_id=' . $HTTP_GET_VARS['articles_id']));
      } else {
        $breadcrumb->add($article['articles_name'], tep_href_link(FILENAME_ARTICLE_INFO, 'tPath=' . $tPath . '&articles_id=' . $HTTP_GET_VARS['articles_id']));
      }
    }
  }

// add only if Header Tags not already installed
  require(DIR_WS_FUNCTIONS . 'clean_html_comments.php');
  
// initialize the message stack for output messages
  require(DIR_WS_CLASSES . 'message_stack.php');
  $messageStack = new messageStack;

// set which precautions should be checked
  define('WARN_INSTALL_EXISTENCE', 'true');
  define('WARN_CONFIG_WRITEABLE', 'true');
  define('WARN_SESSION_DIRECTORY_NOT_WRITEABLE', 'true');
  define('WARN_SESSION_AUTO_START', 'true');
  define('WARN_DOWNLOAD_DIRECTORY_NOT_READABLE', 'true');
  
  
  $currentFile = $_SERVER["SCRIPT_NAME"]; 
$parts = Explode('/', $currentFile); 
$currentFile = $parts[count($parts) - 1]; 


if (DOWN_FOR_MAINTENANCE == 'true' and $currentFile != "maintenance.php") {
if ($_SERVER['REMOTE_ADDR'] != DOWN_FOR_MAINTENANCE_IP_ADDRESS) 
{ 
tep_redirect(tep_href_link(DOWN_FOR_MAINTENANCE_PAGE)); 
}
}

  
  
?>
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