* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\HttpKernel\Fragment; use Symfony\Component\HttpFoundation\Request; use Symfony\Component\HttpFoundation\Response; use Symfony\Component\HttpKernel\HttpKernelInterface; use Symfony\Component\HttpKernel\Controller\ControllerReference; use Symfony\Component\HttpKernel\KernelEvents; use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent; use Symfony\Component\EventDispatcher\EventDispatcherInterface; /** * Implements the inline rendering strategy where the Request is rendered by the current HTTP kernel. * * @author Fabien Potencier */ class InlineFragmentRenderer extends RoutableFragmentRenderer { private $kernel; private $dispatcher; /** * Constructor. * * @param HttpKernelInterface $kernel A HttpKernelInterface instance * @param EventDispatcherInterface $dispatcher A EventDispatcherInterface instance */ public function __construct(HttpKernelInterface $kernel, EventDispatcherInterface $dispatcher = null) { $this->kernel = $kernel; $this->dispatcher = $dispatcher; } /** * {@inheritdoc} * * Additional available options: * * * alt: an alternative URI to render in case of an error */ public function render($uri, Request $request, array $options = array()) { $reference = null; if ($uri instanceof ControllerReference) { $reference = $uri; // Remove attributes from the generated URI because if not, the Symfony // routing system will use them to populate the Request attributes. We don't // want that as we want to preserve objects (so we manually set Request attributes // below instead) $attributes = $reference->attributes; $reference->attributes = array(); // The request format and locale might have been overridden by the user foreach (array('_format', '_locale') as $key) { if (isset($attributes[$key])) { $reference->attributes[$key] = $attributes[$key]; } } $uri = $this->generateFragmentUri($uri, $request, false, false); $reference->attributes = array_merge($attributes, $reference->attributes); } $subRequest = $this->createSubRequest($uri, $request); // override Request attributes as they can be objects (which are not supported by the generated URI) if (null !== $reference) { $subRequest->attributes->add($reference->attributes); } $level = ob_get_level(); try { return $this->kernel->handle($subRequest, HttpKernelInterface::SUB_REQUEST, false); } catch (\Exception $e) { // we dispatch the exception event to trigger the logging // the response that comes back is simply ignored if (isset($options['ignore_errors']) && $options['ignore_errors'] && $this->dispatcher) { $event = new GetResponseForExceptionEvent($this->kernel, $request, HttpKernelInterface::SUB_REQUEST, $e); $this->dispatcher->dispatch(KernelEvents::EXCEPTION, $event); } // let's clean up the output buffers that were created by the sub-request while (ob_get_level() > $level) { ob_get_clean(); } if (isset($options['alt'])) { $alt = $options['alt']; unset($options['alt']); return $this->render($alt, $request, $options); } if (!isset($options['ignore_errors']) || !$options['ignore_errors']) { throw $e; } return new Response(); } } protected function createSubRequest($uri, Request $request) { $cookies = $request->cookies->all(); $server = $request->server->all(); // Override the arguments to emulate a sub-request. // Sub-request object will point to localhost as client ip and real client ip // will be included into trusted header for client ip try { if ($trustedHeaderName = Request::getTrustedHeaderName(Request::HEADER_CLIENT_IP)) { $currentXForwardedFor = $request->headers->get($trustedHeaderName, ''); $server['HTTP_'.$trustedHeaderName] = ($currentXForwardedFor ? $currentXForwardedFor.', ' : '').$request->getClientIp(); } } catch (\InvalidArgumentException $e) { // Do nothing } $server['REMOTE_ADDR'] = '127.0.0.1'; $subRequest = Request::create($uri, 'get', array(), $cookies, array(), $server); if ($request->headers->has('Surrogate-Capability')) { $subRequest->headers->set('Surrogate-Capability', $request->headers->get('Surrogate-Capability')); } if ($session = $request->getSession()) { $subRequest->setSession($session); } return $subRequest; } /** * {@inheritdoc} */ public function getName() { return 'inline'; } }