[Sommaire] [Imprimer]

   1  <?php
   2  /*
   3    $Id: application_top.php,v 1.280 2003/07/12 09:38:07 hpdl Exp $
   4  
   5    osCommerce, Open Source E-Commerce Solutions
   6    http://www.oscommerce.com
   7  
   8    Copyright (c) 2003 osCommerce
   9  
  10    Released under the GNU General Public License
  11  */
  12  
  13  // start the timer for the page parse time log
  14    define('PAGE_PARSE_START_TIME', microtime());
  15  
  16  // set the level of error reporting
  17    error_reporting(E_ALL & ~E_NOTICE);
  18  
  19  // check if register_globals is enabled.
  20  // since this is a temporary measure this message is hardcoded. The requirement will be removed before 2.2 is finalized.
  21    if (function_exists('ini_get')) {
  22      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.');
  23    }
  24  
  25  // Set the local configuration parameters - mainly for developers
  26    if (file_exists('includes/local/configure.php')) include('includes/local/configure.php');
  27  
  28  // include server parameters
  29    require('includes/configure.php');
  30  
  31    if (strlen(DB_SERVER) < 1) {
  32      if (is_dir('install')) {
  33        header('Location: install/index.php');
  34      }
  35    }
  36  
  37  // define the project version
  38    define('PROJECT_VERSION', 'osCommerce 2.2-MS2');
  39  
  40  // set the type of request (secure or not)
  41    $request_type = (getenv('HTTPS') == 'on') ? 'SSL' : 'NONSSL';
  42  
  43  // set php_self in the local scope
  44    if (!isset($PHP_SELF)) $PHP_SELF = $HTTP_SERVER_VARS['PHP_SELF'];
  45  
  46    if ($request_type == 'NONSSL') {
  47      define('DIR_WS_CATALOG', DIR_WS_HTTP_CATALOG);
  48    } else {
  49      define('DIR_WS_CATALOG', DIR_WS_HTTPS_CATALOG);
  50    }
  51  
  52  // include the list of project filenames
  53    require (DIR_WS_INCLUDES . 'filenames.php');
  54  
  55  // include the list of project database tables
  56    require (DIR_WS_INCLUDES . 'database_tables.php');
  57  
  58  // customization for the design layout
  59    define('BOX_WIDTH', 125); // how wide the boxes should be in pixels (default: 125)
  60  
  61  // include the database functions
  62    require(DIR_WS_FUNCTIONS . 'database.php');
  63  
  64  // make a connection to the database... now
  65    tep_db_connect() or die('Unable to connect to database server!');
  66  
  67  // set the application parameters
  68    $configuration_query = tep_db_query('select configuration_key as cfgKey, configuration_value as cfgValue from ' . TABLE_CONFIGURATION);
  69    while ($configuration = tep_db_fetch_array($configuration_query)) {
  70      define($configuration['cfgKey'], $configuration['cfgValue']);
  71    }
  72  
  73  // if gzip_compression is enabled, start to buffer the output
  74    if ( (GZIP_COMPRESSION == 'true') && ($ext_zlib_loaded = extension_loaded('zlib')) && (PHP_VERSION >= '4') ) {
  75      if (($ini_zlib_output_compression = (int)ini_get('zlib.output_compression')) < 1) {
  76        if (PHP_VERSION >= '4.0.4') {
  77          ob_start('ob_gzhandler');
  78        } else {
  79          include(DIR_WS_FUNCTIONS . 'gzip_compression.php');
  80          ob_start();
  81          ob_implicit_flush();
  82        }
  83      } else {
  84        ini_set('zlib.output_compression_level', GZIP_LEVEL);
  85      }
  86    }
  87  
  88  // set the HTTP GET parameters manually if search_engine_friendly_urls is enabled
  89    if (SEARCH_ENGINE_FRIENDLY_URLS == 'true') {
  90      if (strlen(getenv('PATH_INFO')) > 1) {
  91        $GET_array = array();
  92        $PHP_SELF = str_replace(getenv('PATH_INFO'), '', $PHP_SELF);
  93        $vars = explode('/', substr(getenv('PATH_INFO'), 1));
  94        for ($i=0, $n=sizeof($vars); $i<$n; $i++) {
  95          if (strpos($vars[$i], '[]')) {
  96            $GET_array[substr($vars[$i], 0, -2)][] = $vars[$i+1];
  97          } else {
  98            $HTTP_GET_VARS[$vars[$i]] = $vars[$i+1];
  99          }
 100          $i++;
 101        }
 102  
 103        if (sizeof($GET_array) > 0) {
 104          while (list($key, $value) = each($GET_array)) {
 105            $HTTP_GET_VARS[$key] = $value;
 106          }
 107        }
 108      }
 109    }
 110  
 111  // define general functions used application-wide
 112    require(DIR_WS_FUNCTIONS . 'general.php');
 113    require(DIR_WS_FUNCTIONS . 'html_output.php');
 114  
 115  // set the cookie domain
 116    $cookie_domain = (($request_type == 'NONSSL') ? HTTP_COOKIE_DOMAIN : HTTPS_COOKIE_DOMAIN);
 117    $cookie_path = (($request_type == 'NONSSL') ? HTTP_COOKIE_PATH : HTTPS_COOKIE_PATH);
 118  
 119  // include cache functions if enabled
 120    if (USE_CACHE == 'true') include(DIR_WS_FUNCTIONS . 'cache.php');
 121  
 122  // include shopping cart class
 123    require(DIR_WS_CLASSES . 'shopping_cart.php');
 124  
 125  // include navigation history class
 126    require(DIR_WS_CLASSES . 'navigation_history.php');
 127  
 128  // some code to solve compatibility issues
 129    require(DIR_WS_FUNCTIONS . 'compatibility.php');
 130  
 131  // check if sessions are supported, otherwise use the php3 compatible session class
 132    if (!function_exists('session_start')) {
 133      define('PHP_SESSION_NAME', 'osCsid');
 134      define('PHP_SESSION_PATH', $cookie_path);
 135      define('PHP_SESSION_DOMAIN', $cookie_domain);
 136      define('PHP_SESSION_SAVE_PATH', SESSION_WRITE_DIRECTORY);
 137  
 138      include(DIR_WS_CLASSES . 'sessions.php');
 139    }
 140  
 141  // define how the session functions will be used
 142    require(DIR_WS_FUNCTIONS . 'sessions.php');
 143  
 144  // set the session name and save path
 145    tep_session_name('osCsid');
 146    tep_session_save_path(SESSION_WRITE_DIRECTORY);
 147  
 148  // set the session cookie parameters
 149     if (function_exists('session_set_cookie_params')) {
 150      session_set_cookie_params(0, $cookie_path, $cookie_domain);
 151    } elseif (function_exists('ini_set')) {
 152      ini_set('session.cookie_lifetime', '0');
 153      ini_set('session.cookie_path', $cookie_path);
 154      ini_set('session.cookie_domain', $cookie_domain);
 155    }
 156  
 157  // set the session ID if it exists
 158     if (isset($HTTP_POST_VARS[tep_session_name()])) {
 159       tep_session_id($HTTP_POST_VARS[tep_session_name()]);
 160     } elseif ( ($request_type == 'SSL') && isset($HTTP_GET_VARS[tep_session_name()]) ) {
 161       tep_session_id($HTTP_GET_VARS[tep_session_name()]);
 162     }
 163  
 164  // start the session
 165    $session_started = false;
 166    if (SESSION_FORCE_COOKIE_USE == 'True') {
 167      tep_setcookie('cookie_test', 'please_accept_for_session', time()+60*60*24*30, $cookie_path, $cookie_domain);
 168  
 169      if (isset($HTTP_COOKIE_VARS['cookie_test'])) {
 170        tep_session_start();
 171        $session_started = true;
 172      }
 173    } elseif (SESSION_BLOCK_SPIDERS == 'True') {
 174      $user_agent = strtolower(getenv('HTTP_USER_AGENT'));
 175      $spider_flag = false;
 176  
 177      if (tep_not_null($user_agent)) {
 178        $spiders = file(DIR_WS_INCLUDES . 'spiders.txt');
 179  
 180        for ($i=0, $n=sizeof($spiders); $i<$n; $i++) {
 181          if (tep_not_null($spiders[$i])) {
 182            if (is_integer(strpos($user_agent, trim($spiders[$i])))) {
 183              $spider_flag = true;
 184              break;
 185            }
 186          }
 187        }
 188      }
 189  
 190      if ($spider_flag == false) {
 191        tep_session_start();
 192        $session_started = true;
 193      }
 194    } else {
 195      tep_session_start();
 196      $session_started = true;
 197    }
 198  
 199  // set SID once, even if empty
 200    $SID = (defined('SID') ? SID : '');
 201  
 202  // verify the ssl_session_id if the feature is enabled
 203    if ( ($request_type == 'SSL') && (SESSION_CHECK_SSL_SESSION_ID == 'True') && (ENABLE_SSL == true) && ($session_started == true) ) {
 204      $ssl_session_id = getenv('SSL_SESSION_ID');
 205      if (!tep_session_is_registered('SSL_SESSION_ID')) {
 206        $SESSION_SSL_ID = $ssl_session_id;
 207        tep_session_register('SESSION_SSL_ID');
 208      }
 209  
 210      if ($SESSION_SSL_ID != $ssl_session_id) {
 211        tep_session_destroy();
 212        tep_redirect(tep_href_link(FILENAME_SSL_CHECK));
 213      }
 214    }
 215  
 216  // verify the browser user agent if the feature is enabled
 217    if (SESSION_CHECK_USER_AGENT == 'True') {
 218      $http_user_agent = getenv('HTTP_USER_AGENT');
 219      if (!tep_session_is_registered('SESSION_USER_AGENT')) {
 220        $SESSION_USER_AGENT = $http_user_agent;
 221        tep_session_register('SESSION_USER_AGENT');
 222      }
 223  
 224      if ($SESSION_USER_AGENT != $http_user_agent) {
 225        tep_session_destroy();
 226        tep_redirect(tep_href_link(FILENAME_LOGIN));
 227      }
 228    }
 229  
 230  // verify the IP address if the feature is enabled
 231    if (SESSION_CHECK_IP_ADDRESS == 'True') {
 232      $ip_address = tep_get_ip_address();
 233      if (!tep_session_is_registered('SESSION_IP_ADDRESS')) {
 234        $SESSION_IP_ADDRESS = $ip_address;
 235        tep_session_register('SESSION_IP_ADDRESS');
 236      }
 237  
 238      if ($SESSION_IP_ADDRESS != $ip_address) {
 239        tep_session_destroy();
 240        tep_redirect(tep_href_link(FILENAME_LOGIN));
 241      }
 242    }
 243  
 244  // create the shopping cart & fix the cart if necesary
 245    if (tep_session_is_registered('cart') && is_object($cart)) {
 246      if (PHP_VERSION < 4) {
 247        $broken_cart = $cart;
 248        $cart = new shoppingCart;
 249        $cart->unserialize($broken_cart);
 250      }
 251    } else {
 252      tep_session_register('cart');
 253      $cart = new shoppingCart;
 254    }
 255  
 256  // include currencies class and create an instance
 257    require (DIR_WS_CLASSES . 'currencies.php');
 258    $currencies = new currencies();
 259  
 260  // include the mail classes
 261    require(DIR_WS_CLASSES . 'mime.php');
 262    require(DIR_WS_CLASSES . 'email.php');
 263  
 264  // set the language
 265    if (!tep_session_is_registered('language') || isset($HTTP_GET_VARS['language'])) {
 266      if (!tep_session_is_registered('language')) {
 267        tep_session_register('language');
 268        tep_session_register('languages_id');
 269      }
 270  
 271      include(DIR_WS_CLASSES . 'language.php');
 272      $lng = new language();
 273  
 274      if (isset($HTTP_GET_VARS['language']) && tep_not_null($HTTP_GET_VARS['language'])) {
 275        $lng->set_language($HTTP_GET_VARS['language']);
 276      } else {
 277        $lng->get_browser_language();
 278      }
 279  
 280      $language = $lng->language['directory'];
 281      $languages_id = $lng->language['id'];
 282    }
 283  
 284  // include the language translations
 285    require(DIR_WS_LANGUAGES . $language . '.php');
 286  
 287  // currency
 288    if (!tep_session_is_registered('currency') || isset($HTTP_GET_VARS['currency']) || ( (USE_DEFAULT_LANGUAGE_CURRENCY == 'true') && (LANGUAGE_CURRENCY != $currency) ) ) {
 289      if (!tep_session_is_registered('currency')) tep_session_register('currency');
 290  
 291      if (isset($HTTP_GET_VARS['currency'])) {
 292        if (!$currency = tep_currency_exists($HTTP_GET_VARS['currency'])) $currency = (USE_DEFAULT_LANGUAGE_CURRENCY == 'true') ? LANGUAGE_CURRENCY : DEFAULT_CURRENCY;
 293      } else {
 294        $currency = (USE_DEFAULT_LANGUAGE_CURRENCY == 'true') ? LANGUAGE_CURRENCY : DEFAULT_CURRENCY;
 295      }
 296    }
 297  
 298  // navigation history
 299    if (tep_session_is_registered('navigation')) {
 300      if (PHP_VERSION < 4) {
 301        $broken_navigation = $navigation;
 302        $navigation = new navigationHistory;
 303        $navigation->unserialize($broken_navigation);
 304      }
 305    } else {
 306      tep_session_register('navigation');
 307      $navigation = new navigationHistory;
 308    }
 309    $navigation->add_current_page();
 310  
 311  // Shopping cart actions
 312    if (isset($HTTP_GET_VARS['action'])) {
 313  // redirect the customer to a friendly cookie-must-be-enabled page if cookies are disabled
 314      if ($session_started == false) {
 315        tep_redirect(tep_href_link(FILENAME_COOKIE_USAGE));
 316      }
 317  
 318      if (DISPLAY_CART == 'true') {
 319        $goto =  FILENAME_SHOPPING_CART;
 320        $parameters = array('action', 'cPath', 'products_id', 'pid');
 321      } else {
 322        $goto = basename($PHP_SELF);
 323        if ($HTTP_GET_VARS['action'] == 'buy_now') {
 324          $parameters = array('action', 'pid', 'products_id');
 325        } else {
 326          $parameters = array('action', 'pid');
 327        }
 328      }
 329      switch ($HTTP_GET_VARS['action']) {
 330        // customer wants to update the product quantity in their shopping cart
 331        case 'update_product' : for ($i=0, $n=sizeof($HTTP_POST_VARS['products_id']); $i<$n; $i++) {
 332                                  if (in_array($HTTP_POST_VARS['products_id'][$i], (is_array($HTTP_POST_VARS['cart_delete']) ? $HTTP_POST_VARS['cart_delete'] : array()))) {
 333                                    $cart->remove($HTTP_POST_VARS['products_id'][$i]);
 334                                  } else {
 335                                    if (PHP_VERSION < 4) {
 336                                      // if PHP3, make correction for lack of multidimensional array.
 337                                      reset($HTTP_POST_VARS);
 338                                      while (list($key, $value) = each($HTTP_POST_VARS)) {
 339                                        if (is_array($value)) {
 340                                          while (list($key2, $value2) = each($value)) {
 341                                            if (ereg ("(.*)\]\[(.*)", $key2, $var)) {
 342                                              $id2[$var[1]][$var[2]] = $value2;
 343                                            }
 344                                          }
 345                                        }
 346                                      }
 347                                      $attributes = ($id2[$HTTP_POST_VARS['products_id'][$i]]) ? $id2[$HTTP_POST_VARS['products_id'][$i]] : '';
 348                                    } else {
 349                                      $attributes = ($HTTP_POST_VARS['id'][$HTTP_POST_VARS['products_id'][$i]]) ? $HTTP_POST_VARS['id'][$HTTP_POST_VARS['products_id'][$i]] : '';
 350                                    }
 351                                    $cart->add_cart($HTTP_POST_VARS['products_id'][$i], $HTTP_POST_VARS['cart_quantity'][$i], $attributes, false);
 352                                  }
 353                                }
 354                                tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
 355                                break;
 356        // customer adds a product from the products page
 357        case 'add_product' :    if (isset($HTTP_POST_VARS['products_id']) && is_numeric($HTTP_POST_VARS['products_id'])) {
 358                                  $cart->add_cart($HTTP_POST_VARS['products_id'], $cart->get_quantity(tep_get_uprid($HTTP_POST_VARS['products_id'], $HTTP_POST_VARS['id']))+1, $HTTP_POST_VARS['id']);
 359                                }
 360                                tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
 361                                break;
 362        // performed by the 'buy now' button in product listings and review page
 363        case 'buy_now' :        if (isset($HTTP_GET_VARS['products_id'])) {
 364                                  if (tep_has_product_attributes($HTTP_GET_VARS['products_id'])) {
 365                                    tep_redirect(tep_href_link(FILENAME_PRODUCT_INFO, 'products_id=' . $HTTP_GET_VARS['products_id']));
 366                                  } else {
 367                                    $cart->add_cart($HTTP_GET_VARS['products_id'], $cart->get_quantity($HTTP_GET_VARS['products_id'])+1);
 368                                  }
 369                                }
 370                                tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
 371                                break;
 372        case 'notify' :         if (tep_session_is_registered('customer_id')) {
 373                                  if (isset($HTTP_GET_VARS['products_id'])) {
 374                                    $notify = $HTTP_GET_VARS['products_id'];
 375                                  } elseif (isset($HTTP_GET_VARS['notify'])) {
 376                                    $notify = $HTTP_GET_VARS['notify'];
 377                                  } elseif (isset($HTTP_POST_VARS['notify'])) {
 378                                    $notify = $HTTP_POST_VARS['notify'];
 379                                  } else {
 380                                    tep_redirect(tep_href_link(basename($PHP_SELF), tep_get_all_get_params(array('action', 'notify'))));
 381                                  }
 382                                  if (!is_array($notify)) $notify = array($notify);
 383                                  for ($i=0, $n=sizeof($notify); $i<$n; $i++) {
 384                                    $check_query = tep_db_query("select count(*) as count from " . TABLE_PRODUCTS_NOTIFICATIONS . " where products_id = '" . $notify[$i] . "' and customers_id = '" . $customer_id . "'");
 385                                    $check = tep_db_fetch_array($check_query);
 386                                    if ($check['count'] < 1) {
 387                                      tep_db_query("insert into " . TABLE_PRODUCTS_NOTIFICATIONS . " (products_id, customers_id, date_added) values ('" . $notify[$i] . "', '" . $customer_id . "', now())");
 388                                    }
 389                                  }
 390                                  tep_redirect(tep_href_link(basename($PHP_SELF), tep_get_all_get_params(array('action', 'notify'))));
 391                                } else {
 392                                  $navigation->set_snapshot();
 393                                  tep_redirect(tep_href_link(FILENAME_LOGIN, '', 'SSL'));
 394                                }
 395                                break;
 396        case 'notify_remove' :  if (tep_session_is_registered('customer_id') && isset($HTTP_GET_VARS['products_id'])) {
 397                                  $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 . "'");
 398                                  $check = tep_db_fetch_array($check_query);
 399                                  if ($check['count'] > 0) {
 400                                    tep_db_query("delete from " . TABLE_PRODUCTS_NOTIFICATIONS . " where products_id = '" . $HTTP_GET_VARS['products_id'] . "' and customers_id = '" . $customer_id . "'");
 401                                  }
 402                                  tep_redirect(tep_href_link(basename($PHP_SELF), tep_get_all_get_params(array('action'))));
 403                                } else {
 404                                  $navigation->set_snapshot();
 405                                  tep_redirect(tep_href_link(FILENAME_LOGIN, '', 'SSL'));
 406                                }
 407                                break;
 408        case 'cust_order' :     if (tep_session_is_registered('customer_id') && isset($HTTP_GET_VARS['pid'])) {
 409                                  if (tep_has_product_attributes($HTTP_GET_VARS['pid'])) {
 410                                    tep_redirect(tep_href_link(FILENAME_PRODUCT_INFO, 'products_id=' . $HTTP_GET_VARS['pid']));
 411                                  } else {
 412                                    $cart->add_cart($HTTP_GET_VARS['pid'], $cart->get_quantity($HTTP_GET_VARS['pid'])+1);
 413                                  }
 414                                }
 415                                tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
 416                                break;
 417      }
 418    }
 419  
 420  // include the who's online functions
 421    require(DIR_WS_FUNCTIONS . 'whos_online.php');
 422    tep_update_whos_online();
 423  
 424  // include the password crypto functions
 425    require(DIR_WS_FUNCTIONS . 'password_funcs.php');
 426  
 427  // include validation functions (right now only email address)
 428    require(DIR_WS_FUNCTIONS . 'validations.php');
 429  
 430  // split-page-results
 431    require(DIR_WS_CLASSES . 'split_page_results.php');
 432  
 433  // infobox
 434    require(DIR_WS_CLASSES . 'boxes.php');
 435  
 436  // auto activate and expire banners
 437    require(DIR_WS_FUNCTIONS . 'banner.php');
 438    tep_activate_banners();
 439    tep_expire_banners();
 440  
 441  // auto expire special products
 442    require(DIR_WS_FUNCTIONS . 'specials.php');
 443    tep_expire_specials();
 444  
 445  // calculate category path
 446    if (isset($HTTP_GET_VARS['cPath'])) {
 447      $cPath = $HTTP_GET_VARS['cPath'];
 448    } elseif (isset($HTTP_GET_VARS['products_id']) && !isset($HTTP_GET_VARS['manufacturers_id'])) {
 449      $cPath = tep_get_product_path($HTTP_GET_VARS['products_id']);
 450    } else {
 451      $cPath = '';
 452    }
 453  
 454    if (tep_not_null($cPath)) {
 455      $cPath_array = tep_parse_category_path($cPath);
 456      $cPath = implode('_', $cPath_array);
 457      $current_category_id = $cPath_array[(sizeof($cPath_array)-1)];
 458    } else {
 459      $current_category_id = 0;
 460    }
 461  
 462  // include the breadcrumb class and start the breadcrumb trail
 463    require(DIR_WS_CLASSES . 'breadcrumb.php');
 464    $breadcrumb = new breadcrumb;
 465  
 466    $breadcrumb->add(HEADER_TITLE_TOP, HTTP_SERVER);
 467    $breadcrumb->add(HEADER_TITLE_CATALOG, tep_href_link(FILENAME_DEFAULT));
 468  
 469  // add category names or the manufacturer name to the breadcrumb trail
 470    if (isset($cPath_array)) {
 471      for ($i=0, $n=sizeof($cPath_array); $i<$n; $i++) {
 472        $categories_query = tep_db_query("select categories_name from " . TABLE_CATEGORIES_DESCRIPTION . " where categories_id = '" . (int)$cPath_array[$i] . "' and language_id = '" . (int)$languages_id . "'");
 473        if (tep_db_num_rows($categories_query) > 0) {
 474          $categories = tep_db_fetch_array($categories_query);
 475          $breadcrumb->add($categories['categories_name'], tep_href_link(FILENAME_DEFAULT, 'cPath=' . implode('_', array_slice($cPath_array, 0, ($i+1)))));
 476        } else {
 477          break;
 478        }
 479      }
 480    } elseif (isset($HTTP_GET_VARS['manufacturers_id'])) {
 481      $manufacturers_query = tep_db_query("select manufacturers_name from " . TABLE_MANUFACTURERS . " where manufacturers_id = '" . (int)$HTTP_GET_VARS['manufacturers_id'] . "'");
 482      if (tep_db_num_rows($manufacturers_query)) {
 483        $manufacturers = tep_db_fetch_array($manufacturers_query);
 484        $breadcrumb->add($manufacturers['manufacturers_name'], tep_href_link(FILENAME_DEFAULT, 'manufacturers_id=' . $HTTP_GET_VARS['manufacturers_id']));
 485      }
 486    }
 487  
 488  // add the products model to the breadcrumb trail
 489    if (isset($HTTP_GET_VARS['products_id'])) {
 490      $model_query = tep_db_query("select products_model from " . TABLE_PRODUCTS . " where products_id = '" . (int)$HTTP_GET_VARS['products_id'] . "'");
 491      if (tep_db_num_rows($model_query)) {
 492        $model = tep_db_fetch_array($model_query);
 493        $breadcrumb->add($model['products_model'], tep_href_link(FILENAME_PRODUCT_INFO, 'cPath=' . $cPath . '&products_id=' . $HTTP_GET_VARS['products_id']));
 494      }
 495    }
 496  
 497  // initialize the message stack for output messages
 498    require(DIR_WS_CLASSES . 'message_stack.php');
 499    $messageStack = new messageStack;
 500  
 501  // set which precautions should be checked
 502    define('WARN_INSTALL_EXISTENCE', 'true');
 503    define('WARN_CONFIG_WRITEABLE', 'true');
 504    define('WARN_SESSION_DIRECTORY_NOT_WRITEABLE', 'true');
 505    define('WARN_SESSION_AUTO_START', 'true');
 506    define('WARN_DOWNLOAD_DIRECTORY_NOT_READABLE', 'true');
 507  ?>