vendor/symfony/routing/Symfony/Component/Routing/Matcher/ApacheUrlMatcher.php

   1 <?php
   2
   3 /*
   4  * This file is part of the Symfony package.
   5  *
   6  * (c) Fabien Potencier <fabien@symfony.com>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Symfony\Component\Routing\Matcher;
  13
  14 use Symfony\Component\Routing\Exception\MethodNotAllowedException;
  15
  16 /**
  17  * ApacheUrlMatcher matches URL based on Apache mod_rewrite matching (see ApacheMatcherDumper).
  18  *
  19  * @author Fabien Potencier <fabien@symfony.com>
  20  * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
  21  */
  22 class ApacheUrlMatcher extends UrlMatcher
  23 {
  24     /**
  25      * Tries to match a URL based on Apache mod_rewrite matching.
  26      *
  27      * Returns false if no route matches the URL.
  28      *
  29      * @param string $pathinfo The pathinfo to be parsed
  30      *
  31      * @return array An array of parameters
  32      *
  33      * @throws MethodNotAllowedException If the current method is not allowed
  34      */
  35     public function match($pathinfo)
  36     {
  37         $parameters = array();
  38         $defaults = array();
  39         $allow = array();
  40         $route = null;
  41
  42         foreach ($_SERVER as $key => $value) {
  43             $name = $key;
  44
  45             // skip non-routing variables
  46             // this improves performance when $_SERVER contains many usual
  47             // variables like HTTP_*, DOCUMENT_ROOT, REQUEST_URI, ...
  48             if (false === strpos($name, '_ROUTING_')) {
  49                 continue;
  50             }
  51
  52             while (0 === strpos($name, 'REDIRECT_')) {
  53                 $name = substr($name, 9);
  54             }
  55
  56             // expect _ROUTING_<type>_<name>
  57             // or _ROUTING_<type>
  58
  59             if (0 !== strpos($name, '_ROUTING_')) {
  60                 continue;
  61             }
  62             if (false !== $pos = strpos($name, '_', 9)) {
  63                 $type = substr($name, 9, $pos-9);
  64                 $name = substr($name, $pos+1);
  65             } else {
  66                 $type = substr($name, 9);
  67             }
  68
  69             if ('param' === $type) {
  70                 if ('' !== $value) {
  71                     $parameters[$name] = $value;
  72                 }
  73             } elseif ('default' === $type) {
  74                 $defaults[$name] = $value;
  75             } elseif ('route' === $type) {
  76                 $route = $value;
  77             } elseif ('allow' === $type) {
  78                 $allow[] = $name;
  79             }
  80
  81             unset($_SERVER[$key]);
  82         }
  83
  84         if (null !== $route) {
  85             $parameters['_route'] = $route;
  86
  87             return $this->mergeDefaults($parameters, $defaults);
  88         } elseif (0 < count($allow)) {
  89             throw new MethodNotAllowedException($allow);
  90         } else {
  91             return parent::match($pathinfo);
  92         }
  93     }
  94 }