lib/system/RequestHandler.class.php

   1 <?php
   2 namespace dns\system;
   3
   4 /**
   5  * @author      Jan Altensen (Stricted)
   6  * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
   7  * @copyright   2013-2015 Jan Altensen (Stricted)
   8  */
   9 class RequestHandler {
  10         /**
  11          * init RequestHandler
  12          */
  13         public function __construct ($module = '') {
  14                 $className = "";
  15                 $pages = glob(DNS_DIR.'/lib/'.(empty($module) ? '' : $module.'/').'page/*Page.class.php');
  16                 if (isset($_GET["page"]) && !empty($_GET["page"])) {
  17                         if (strtolower($_GET["page"]) != "abstract") {
  18                                 foreach ($pages as $page) {
  19                                         $page = str_replace('Page.class.php', '', basename($page));
  20                                         if (strtolower($_GET["page"]) == strtolower($page)) {
  21                                                 $class = "\\dns".(empty($module) ? '' : "\\".$module)."\\page\\".$page."Page";
  22                                                 if (class_exists($class) && is_subclass_of($class, '\\dns\\page\\AbstractPage')) {
  23                                                         $className = $class;
  24                                                 }
  25                                                 break;
  26                                         }
  27                                 }
  28                         }
  29                 }
  30                 else {
  31                         $className = '\\dns'.(empty($module) ? '' : '\\'.$module).'\\page\\IndexPage';
  32                 }
  33
  34                 if (!User::isLoggedIn() && $className != '\dns\page\LoginPage' && $className != '\dns\page\ApiPage') {
  35                         DNS::getTPL()->display('login.tpl');
  36                         exit;
  37                 }
  38
  39                 if (DNS::getSession()->username !== null) {
  40                         DNS::getTPL()->assign(array("username" => DNS::getSession()->username));
  41                 }
  42
  43                 if (empty($className)) {
  44                         @header('HTTP/1.0 404 Not Found');
  45                         DNS::getTPL()->assign(array("activeMenuItem" => '', "error" => 'The link you are trying to reach is no longer available or invalid.'));
  46                         DNS::getTPL()->display('error.tpl');
  47                         exit;
  48                 }
  49
  50                 // handle offline mode
  51                 if (defined('OFFLINE') && OFFLINE) {
  52                         $admin = User::isAdmin();
  53                         $available = false;
  54
  55                         if (defined($className . '::AVAILABLE_DURING_OFFLINE_MODE') && constant($className . '::AVAILABLE_DURING_OFFLINE_MODE')) {
  56                                 $available = true;
  57                         }
  58
  59                         if (!$admin && !$available) {
  60                                 @header('HTTP/1.1 503 Service Unavailable');
  61                                 DNS::getTPL()->display('offline.tpl');
  62                                 exit;
  63                         }
  64                 }
  65
  66                 try {
  67                         new $className();
  68                 }
  69                 catch (\Exception $e) {
  70                         if ($e->getCode() == 404) {
  71                                 @header('HTTP/1.0 404 Not Found');
  72                         }
  73                         else if ($e->getCode() == 403) {
  74                                 @header('HTTP/1.0 403 Forbidden');
  75                         }
  76
  77                         /* show error page */
  78                         DNS::getTPL()->assign(array("activeMenuItem" => '', "error" => $e->getMessage()));
  79                         DNS::getTPL()->display('error.tpl');
  80                         exit;
  81                 }
  82         }
  83 }