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\Security\Http;

    13 

    14 use Symfony\Component\Security\Core\SecurityContextInterface;

    15 

    16 use Symfony\Component\HttpFoundation\Request;

    17 use Symfony\Component\HttpFoundation\RedirectResponse;

    18 use Symfony\Component\Routing\RouterInterface;

    19 

    20 /**

    21  * Encapsulates the logic needed to create sub-requests, redirect the user, and match URLs.

    22  *

    23  * @author Fabien Potencier <fabien@symfony.com>

    24  */

    25 class HttpUtils

    26 {

    27     private $router;

    28 

    29     /**

    30      * Constructor.

    31      *

    32      * @param RouterInterface $router An RouterInterface instance

    33      */

    34     public function __construct(RouterInterface $router = null)

    35     {

    36         $this->router = $router;

    37     }

    38 

    39     /**

    40      * Creates a redirect Response.

    41      *

    42      * @param Request $request A Request instance

    43      * @param string  $path    A path (an absolute path (/foo), an absolute URL (http://...), or a route name (foo))

    44      * @param integer $status  The status code

    45      *

    46      * @return Response A RedirectResponse instance

    47      */

    48     public function createRedirectResponse(Request $request, $path, $status = 302)

    49     {

    50         if ('/' === $path[0]) {

    51             $path = $request->getUriForPath($path);

    52         } elseif (0 !== strpos($path, 'http')) {

    53             $this->resetLocale($request);

    54             $path = $this->generateUrl($path, true);

    55         }

    56 

    57         return new RedirectResponse($path, $status);

    58     }

    59 

    60     /**

    61      * Creates a Request.

    62      *

    63      * @param Request $request The current Request instance

    64      * @param string  $path    A path (an absolute path (/foo), an absolute URL (http://...), or a route name (foo))

    65      *

    66      * @return Request A Request instance

    67      */

    68     public function createRequest(Request $request, $path)

    69     {

    70         if ($path && '/' !== $path[0] && 0 !== strpos($path, 'http')) {

    71             $this->resetLocale($request);

    72             $path = $this->generateUrl($path, true);

    73         }

    74 

    75         $newRequest = Request::create($path, 'get', array(), $request->cookies->all(), array(), $request->server->all());

    76         if ($session = $request->getSession()) {

    77             $newRequest->setSession($session);

    78         }

    79 

    80         if ($request->attributes->has(SecurityContextInterface::AUTHENTICATION_ERROR)) {

    81             $newRequest->attributes->set(SecurityContextInterface::AUTHENTICATION_ERROR, $request->attributes->get(SecurityContextInterface::AUTHENTICATION_ERROR));

    82         }

    83         if ($request->attributes->has(SecurityContextInterface::ACCESS_DENIED_ERROR)) {

    84             $newRequest->attributes->set(SecurityContextInterface::ACCESS_DENIED_ERROR, $request->attributes->get(SecurityContextInterface::ACCESS_DENIED_ERROR));

    85         }

    86         if ($request->attributes->has(SecurityContextInterface::LAST_USERNAME)) {

    87             $newRequest->attributes->set(SecurityContextInterface::LAST_USERNAME, $request->attributes->get(SecurityContextInterface::LAST_USERNAME));

    88         }

    89 

    90         return $newRequest;

    91     }

    92 

    93     /**

    94      * Checks that a given path matches the Request.

    95      *

    96      * @param Request $request A Request instance

    97      * @param string  $path    A path (an absolute path (/foo), an absolute URL (http://...), or a route name (foo))

    98      *

    99      * @return Boolean true if the path is the same as the one from the Request, false otherwise

   100      */

   101     public function checkRequestPath(Request $request, $path)

   102     {

   103         if ('/' !== $path[0]) {

   104             try {

   105                 $parameters = $this->router->match($request->getPathInfo());

   106 

   107                 return $path === $parameters['_route'];

   108             } catch (\Exception $e) {

   109                 return false;

   110             }

   111         }

   112 

   113         return $path === $request->getPathInfo();

   114     }

   115 

   116     // hack (don't have a better solution for now)

   117     private function resetLocale(Request $request)

   118     {

   119         $context = $this->router->getContext();

   120         if ($context->getParameter('_locale')) {

   121             return;

   122         }

   123 

   124         try {

   125             $parameters = $this->router->match($request->getPathInfo());

   126 

   127             if (isset($parameters['_locale'])) {

   128                 $context->setParameter('_locale', $parameters['_locale']);

   129             } elseif ($session = $request->getSession()) {

   130                 $context->setParameter('_locale', $session->getLocale());

   131             }

   132         } catch (\Exception $e) {

   133             // let's hope user doesn't use the locale in the path

   134         }

   135     }

   136 

   137     private function generateUrl($route, $absolute = false)

   138     {

   139         if (null === $this->router) {

   140             throw new \LogicException('You must provide a RouterInterface instance to be able to use routes.');

   141         }

   142 

   143         return $this->router->generate($route, array(), $absolute);

   144     }

   145 }