/usr/share/php/Symfony/Component/HttpKernel/Fragment/EsiFragmentRenderer.php is in php-symfony-http-kernel 2.3.21+dfsg-4+deb8u3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 | <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* 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\Controller\ControllerReference;
use Symfony\Component\HttpKernel\HttpCache\Esi;
use Symfony\Component\HttpKernel\UriSigner;
/**
* Implements the ESI rendering strategy.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class EsiFragmentRenderer extends RoutableFragmentRenderer
{
private $esi;
private $inlineStrategy;
private $signer;
/**
* Constructor.
*
* The "fallback" strategy when ESI is not available should always be an
* instance of InlineFragmentRenderer.
*
* @param Esi $esi An Esi instance
* @param FragmentRendererInterface $inlineStrategy The inline strategy to use when ESI is not supported
* @param UriSigner $signer
*/
public function __construct(Esi $esi, FragmentRendererInterface $inlineStrategy, UriSigner $signer = null)
{
$this->esi = $esi;
$this->inlineStrategy = $inlineStrategy;
$this->signer = $signer;
}
/**
* {@inheritdoc}
*
* Note that if the current Request has no ESI capability, this method
* falls back to use the inline rendering strategy.
*
* Additional available options:
*
* * alt: an alternative URI to render in case of an error
* * comment: a comment to add when returning an esi:include tag
*
* @see Symfony\Component\HttpKernel\HttpCache\ESI
*/
public function render($uri, Request $request, array $options = array())
{
if (!$this->esi->hasSurrogateEsiCapability($request)) {
return $this->inlineStrategy->render($uri, $request, $options);
}
if ($uri instanceof ControllerReference) {
$uri = $this->generateSignedFragmentUri($uri, $request);
}
$alt = isset($options['alt']) ? $options['alt'] : null;
if ($alt instanceof ControllerReference) {
$alt = $this->generateSignedFragmentUri($alt, $request);
}
$tag = $this->esi->renderIncludeTag($uri, $alt, isset($options['ignore_errors']) ? $options['ignore_errors'] : false, isset($options['comment']) ? $options['comment'] : '');
return new Response($tag);
}
/**
* {@inheritdoc}
*/
public function getName()
{
return 'esi';
}
private function generateSignedFragmentUri($uri, Request $request)
{
if (null === $this->signer) {
throw new \LogicException('You must use a URI when using the ESI rendering strategy or set a URL signer.');
}
// we need to sign the absolute URI, but want to return the path only.
$fragmentUri = $this->signer->sign($this->generateFragmentUri($uri, $request, true));
return substr($fragmentUri, strlen($request->getSchemeAndHttpHost()));
}
}
|