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   2013-2015 Jan Altensen (Stricted)
   9  */
  10 class RequestHandler {
  11         protected $pattern = "";
  12         protected $routeData = array();
  13         protected $controllers = array();
  14
  15         /**
  16          * init RequestHandler
  17          */
  18         public function __construct ($module = '') {
  19                 $this->pattern = '~/?(?:(?P<controller>[A-Za-z0-9\-]+)(?:/(?P<id>\d+)(?:-(?P<title>[^/]+))?)?)?~x';
  20                 $this->getControllers($module);
  21
  22                 if (DNS::getSession()->username !== null) {
  23                         DNS::getTPL()->assign(array("username" => DNS::getSession()->username));
  24                 }
  25                 else {
  26                         DNS::getTPL()->assign(array("username" => ''));
  27                 }
  28
  29                 $className = "";
  30                 if (!empty($_SERVER['QUERY_STRING'])) {
  31                         $this->matches($_SERVER['QUERY_STRING']);
  32                         $this->registerRouteData();
  33                 }
  34                 else {
  35                         $className = '\\dns'.(empty($module) ? '' : '\\'.$module).'\\page\\IndexPage';
  36                 }
  37
  38                 if (isset($this->routeData['controller']) && !empty($this->routeData['controller'])) {
  39                         $controller = strtolower($this->routeData['controller']);
  40                         if (isset($this->controllers[$controller]) && !empty($this->controllers[$controller])) {
  41                                 $className = $this->controllers[$controller];
  42                         }
  43                         else {
  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
  51                 if (!User::isLoggedIn() && $className != '\dns\page\LoginPage' && $className != '\dns\page\ApiPage') {
  52                         DNS::getTPL()->display('login.tpl');
  53                         exit;
  54                 }
  55
  56                 // handle offline mode
  57                 if (defined('OFFLINE') && OFFLINE) {
  58                         $admin = User::isAdmin();
  59                         $available = false;
  60
  61                         if (defined($className . '::AVAILABLE_DURING_OFFLINE_MODE') && constant($className . '::AVAILABLE_DURING_OFFLINE_MODE')) {
  62                                 $available = true;
  63                         }
  64
  65                         if (!$admin && !$available) {
  66                                 @header('HTTP/1.1 503 Service Unavailable');
  67                                 DNS::getTPL()->display('offline.tpl');
  68                                 exit;
  69                         }
  70                 }
  71
  72                 try {
  73                         new $className();
  74                 }
  75                 catch (\Exception $e) {
  76                         if ($e->getCode() == 404) {
  77                                 @header('HTTP/1.0 404 Not Found');
  78                         }
  79                         else if ($e->getCode() == 403) {
  80                                 @header('HTTP/1.0 403 Forbidden');
  81                         }
  82
  83                         /* show error page */
  84                         DNS::getTPL()->assign(array("activeMenuItem" => '', "error" => $e->getMessage()));
  85                         DNS::getTPL()->display('error.tpl');
  86                         exit;
  87                 }
  88         }
  89
  90         /**
  91          * Registers route data within $_GET and $_REQUEST.
  92          */
  93         protected function registerRouteData() {
  94                 foreach ($this->routeData as $key => $value) {
  95                         $_GET[$key] = $value;
  96                         $_REQUEST[$key] = $value;
  97                 }
  98         }
  99
 100         public function getControllers ($module) {
 101
 102                 $this->controllers = ControllerCacheBuilder::getInstance()->getData(array('module' => $module));
 103                 /*
 104                 $pages = glob(DNS_DIR.'/lib/'.(empty($module) ? '' : $module.'/').'page/*Page.class.php');
 105
 106                 foreach ($pages as $page) {
 107                         $page = str_replace('Page.class.php', '', basename($page));
 108
 109                         $class = "\\dns".(empty($module) ? '' : "\\".$module)."\\page\\".$page."Page";
 110                         if (class_exists($class) && is_subclass_of($class, '\\dns\\page\\AbstractPage')) {
 111                                 $this->controllers[strtolower($page)] = $class;
 112                         }
 113                 }
 114                 */
 115         }
 116
 117         public function matches($requestURL) {
 118                 if (preg_match($this->pattern, $requestURL, $matches)) {
 119                         foreach ($matches as $key => $value) {
 120                                 if (!is_numeric($key)) {
 121                                         $this->routeData[$key] = $value;
 122                                 }
 123                         }
 124
 125                         return true;
 126                 }
 127
 128                 return false;
 129         }
 130 }