/usr/share/php/Symfony/Component/HttpKernel/HttpCache/AbstractSurrogate.php is in php-symfony-http-kernel 3.4.6+dfsg-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | <?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 = array(
array('<?', '<%', '<s', '<S'),
array('<?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 = array('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 = $request->headers->get('Surrogate-Capability')) {
return false;
}
return false !== strpos($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, array(), $cache->getRequest()->cookies->all(), array(), $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 %s).', $subRequest->getUri(), $response->getStatusCode()));
}
return $response->getContent();
} catch (\Exception $e) {
if ($alt) {
return $this->handle($cache, $alt, '', $ignoreErrors);
}
if (!$ignoreErrors) {
throw $e;
}
}
}
/**
* 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));
}
}
}
|