lib/system/RequestHandler.class.php

   1 <?php
   2 namespace dns\system;
   3 use dns\system\cache\builder\ControllerCacheBuilder;
   4
   5 /**
   6  * @author      Jan Altensen (Stricted)
   7  * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
   8  * @copyright   2013-2016 Jan Altensen (Stricted)
   9  */
  10 class RequestHandler {
  11         protected $pattern = "";
  12         protected $routeData = array();
  13
  14         /**
  15          * init RequestHandler
  16          */
  17         public function __construct ($module = '') {
  18                 $this->pattern = '~/?(?:(?P<controller>[A-Za-z0-9\-]+)(?:/(?P<id>\d+)(?:-(?P<title>[^/]+))?)?)?~x';
  19                 $controllers = ControllerCacheBuilder::getInstance()->getData(array('module' => $module));
  20
  21                 if (DNS::getSession()->username !== null) {
  22                         DNS::getTPL()->assign(array("username" => DNS::getSession()->username));
  23                 }
  24                 else {
  25                         DNS::getTPL()->assign(array("username" => ''));
  26                 }
  27
  28                 $className = "";
  29                 if (!empty($_SERVER['QUERY_STRING'])) {
  30                         $this->matches($_SERVER['QUERY_STRING']);
  31                         $this->registerRouteData();
  32                 }
  33                 else {
  34                         $className = '\\dns'.(empty($module) ? '' : '\\'.$module).'\\page\\IndexPage';
  35                 }
  36
  37                 if (isset($this->routeData['controller']) && !empty($this->routeData['controller'])) {
  38                         $controller = strtolower($this->routeData['controller']);
  39                         if (isset($controllers[$controller]) && !empty($controllers[$controller])) {
  40                                 $className = $controllers[$controller];
  41                         }
  42                         else {
  43                                 @header('HTTP/1.0 404 Not Found');
  44                                 DNS::getTPL()->assign(array("activeMenuItem" => '', "error" => 'The link you are trying to reach is no longer available or invalid.'));
  45                                 DNS::getTPL()->display('error.tpl');
  46                                 exit;
  47                         }
  48                 }
  49
  50                 if (!User::isLoggedIn() && $className != '\dns\page\LoginPage' && $className != '\dns\page\ApiPage') {
  51                         DNS::getTPL()->display('login.tpl');
  52                         exit;
  53                 }
  54
  55                 // handle offline mode
  56                 if (defined('OFFLINE') && OFFLINE) {
  57                         $admin = User::isAdmin();
  58                         $available = false;
  59
  60                         if (defined($className . '::AVAILABLE_DURING_OFFLINE_MODE') && constant($className . '::AVAILABLE_DURING_OFFLINE_MODE')) {
  61                                 $available = true;
  62                         }
  63
  64                         if (!$admin && !$available) {
  65                                 @header('HTTP/1.1 503 Service Unavailable');
  66                                 DNS::getTPL()->display('offline.tpl');
  67                                 exit;
  68                         }
  69                 }
  70
  71                 try {
  72                         new $className();
  73                 }
  74                 catch (\Exception $e) {
  75                         if ($e->getCode() == 404) {
  76                                 @header('HTTP/1.0 404 Not Found');
  77                         }
  78                         else if ($e->getCode() == 403) {
  79                                 @header('HTTP/1.0 403 Forbidden');
  80                         }
  81
  82                         /* show error page */
  83                         DNS::getTPL()->assign(array("activeMenuItem" => '', "error" => $e->getMessage()));
  84                         DNS::getTPL()->display('error.tpl');
  85                         exit;
  86                 }
  87         }
  88
  89         /**
  90          * Registers route data within $_GET and $_REQUEST.
  91          */
  92         protected function registerRouteData() {
  93                 foreach ($this->routeData as $key => $value) {
  94                         $_GET[$key] = $value;
  95                         $_REQUEST[$key] = $value;
  96                 }
  97         }
  98
  99         public function matches($requestURL) {
 100                 if (preg_match($this->pattern, $requestURL, $matches)) {
 101                         foreach ($matches as $key => $value) {
 102                                 if (!is_numeric($key)) {
 103                                         $this->routeData[$key] = $value;
 104                                 }
 105                         }
 106
 107                         return true;
 108                 }
 109
 110                 return false;
 111         }
 112 }