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Edit File : AbstractSurrogate.php \| Size : 4.31 KB
<?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\HttpCache; use Symfony\Component\HttpFoundation\Request; use Symfony\Component\HttpFoundation\Response; use Symfony\Component\HttpKernel\HttpKernelInterface; /* * Abstract class implementing Surrogate capabilities to Request and Response instances. * * @author Fabien Potencier <fabien@symfony.com> * @author Robin Chalas <robin.chalas@gmail.com> / abstract class AbstractSurrogate implements SurrogateInterface { protected $contentTypes; protected $phpEscapeMap = [ ['<?', '<%', '<s', '<S'], ['<?php echo "<?"; ?>', '<?php echo "<%"; ?>', '<?php echo "<s"; ?>', '<?php echo "<S"; ?>'], ]; /* * @param array $contentTypes An array of content-type that should be parsed for Surrogate information * (default: text/html, text/xml, application/xhtml+xml, and application/xml) / public function __construct(array $contentTypes = ['text/html', 'text/xml', 'application/xhtml+xml', 'application/xml']) { $this->contentTypes = $contentTypes; } /* * Returns a new cache strategy instance. * * @return ResponseCacheStrategyInterface A ResponseCacheStrategyInterface instance / public function createCacheStrategy() { return new ResponseCacheStrategy(); } /* * {@inheritdoc} / public function hasSurrogateCapability(Request $request) { if (null === $value = $request->headers->get('Surrogate-Capability')) { return false; } return str_contains($value, sprintf('%s/1.0', strtoupper($this->getName()))); } /* * {@inheritdoc} / public function addSurrogateCapability(Request $request) { $current = $request->headers->get('Surrogate-Capability'); $new = sprintf('symfony="%s/1.0"', strtoupper($this->getName())); $request->headers->set('Surrogate-Capability', $current ? $current.', '.$new : $new); } /* * {@inheritdoc} / public function needsParsing(Response $response) { if (!$control = $response->headers->get('Surrogate-Control')) { return false; } $pattern = sprintf('#content="[^"]%s/1.0[^"]"#', strtoupper($this->getName())); return (bool) preg_match($pattern, $control); } /* * {@inheritdoc} / public function handle(HttpCache $cache, $uri, $alt, $ignoreErrors) { $subRequest = Request::create($uri, Request::METHOD_GET, [], $cache->getRequest()->cookies->all(), [], $cache->getRequest()->server->all()); try { $response = $cache->handle($subRequest, HttpKernelInterface::SUB_REQUEST, true); if (!$response->isSuccessful()) { throw new \RuntimeException(sprintf('Error when rendering "%s" (Status code is %d).', $subRequest->getUri(), $response->getStatusCode())); } return $response->getContent(); } catch (\Exception $e) { if ($alt) { return $this->handle($cache, $alt, '', $ignoreErrors); } if (!$ignoreErrors) { throw $e; } } return ''; } /* * Remove the Surrogate from the Surrogate-Control header. / protected function removeFromControl(Response $response) { if (!$response->headers->has('Surrogate-Control')) { return; } $value = $response->headers->get('Surrogate-Control'); $upperName = strtoupper($this->getName()); if (sprintf('content="%s/1.0"', $upperName) == $value) { $response->headers->remove('Surrogate-Control'); } elseif (preg_match(sprintf('#,\scontent="%s/1.0"#', $upperName), $value)) { $response->headers->set('Surrogate-Control', preg_replace(sprintf('#,\scontent="%s/1.0"#', $upperName), '', $value)); } elseif (preg_match(sprintf('#content="%s/1.0",\s#', $upperName), $value)) { $response->headers->set('Surrogate-Control', preg_replace(sprintf('#content="%s/1.0",\s*#', $upperName), '', $value)); } } } Back

Edit File : AbstractSurrogate.php | Size : 4.31 KB

<?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\HttpCache;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\HttpKernelInterface;

/**
 * Abstract class implementing Surrogate capabilities to Request and Response instances.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Robin Chalas <robin.chalas@gmail.com>
 */
abstract class AbstractSurrogate implements SurrogateInterface
{
    protected $contentTypes;
    protected $phpEscapeMap = [
        ['<?', '<%', '<s', '<S'],
        ['<?php echo "<?"; ?>', '<?php echo "<%"; ?>', '<?php echo "<s"; ?>', '<?php echo "<S"; ?>'],
    ];

/**
     * @param array $contentTypes An array of content-type that should be parsed for Surrogate information
     *                            (default: text/html, text/xml, application/xhtml+xml, and application/xml)
     */
    public function __construct(array $contentTypes = ['text/html', 'text/xml', 'application/xhtml+xml', 'application/xml'])
    {
        $this->contentTypes = $contentTypes;
    }

/**
     * Returns a new cache strategy instance.
     *
     * @return ResponseCacheStrategyInterface A ResponseCacheStrategyInterface instance
     */
    public function createCacheStrategy()
    {
        return new ResponseCacheStrategy();
    }

/**
     * {@inheritdoc}
     */
    public function hasSurrogateCapability(Request $request)
    {
        if (null === $value = $request->headers->get('Surrogate-Capability')) {
            return false;
        }

return str_contains($value, sprintf('%s/1.0', strtoupper($this->getName())));
    }

/**
     * {@inheritdoc}
     */
    public function addSurrogateCapability(Request $request)
    {
        $current = $request->headers->get('Surrogate-Capability');
        $new = sprintf('symfony="%s/1.0"', strtoupper($this->getName()));

$request->headers->set('Surrogate-Capability', $current ? $current.', '.$new : $new);
    }

/**
     * {@inheritdoc}
     */
    public function needsParsing(Response $response)
    {
        if (!$control = $response->headers->get('Surrogate-Control')) {
            return false;
        }

$pattern = sprintf('#content="[^"]*%s/1.0[^"]*"#', strtoupper($this->getName()));

return (bool) preg_match($pattern, $control);
    }

/**
     * {@inheritdoc}
     */
    public function handle(HttpCache $cache, $uri, $alt, $ignoreErrors)
    {
        $subRequest = Request::create($uri, Request::METHOD_GET, [], $cache->getRequest()->cookies->all(), [], $cache->getRequest()->server->all());

try {
            $response = $cache->handle($subRequest, HttpKernelInterface::SUB_REQUEST, true);

if (!$response->isSuccessful()) {
                throw new \RuntimeException(sprintf('Error when rendering "%s" (Status code is %d).', $subRequest->getUri(), $response->getStatusCode()));
            }

return $response->getContent();
        } catch (\Exception $e) {
            if ($alt) {
                return $this->handle($cache, $alt, '', $ignoreErrors);
            }

if (!$ignoreErrors) {
                throw $e;
            }
        }

return '';
    }

/**
     * Remove the Surrogate from the Surrogate-Control header.
     */
    protected function removeFromControl(Response $response)
    {
        if (!$response->headers->has('Surrogate-Control')) {
            return;
        }

$value = $response->headers->get('Surrogate-Control');
        $upperName = strtoupper($this->getName());

if (sprintf('content="%s/1.0"', $upperName) == $value) {
            $response->headers->remove('Surrogate-Control');
        } elseif (preg_match(sprintf('#,\s*content="%s/1.0"#', $upperName), $value)) {
            $response->headers->set('Surrogate-Control', preg_replace(sprintf('#,\s*content="%s/1.0"#', $upperName), '', $value));
        } elseif (preg_match(sprintf('#content="%s/1.0",\s*#', $upperName), $value)) {
            $response->headers->set('Surrogate-Control', preg_replace(sprintf('#content="%s/1.0",\s*#', $upperName), '', $value));
        }
    }
}

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