Created
November 15, 2012 14:22
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stripping cookies for caching when using the Symfony2 HttpCache
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<?php | |
require_once __DIR__.'/AppKernel.php'; | |
use Symfony\Bundle\FrameworkBundle\HttpCache\HttpCache; | |
use Symfony\Component\HttpFoundation\Request; | |
use Symfony\Component\HttpFoundation\Response; | |
class AppCache extends HttpCache | |
{ | |
private $cookieWhitelist = array( | |
'MYCOOKIE' | |
); | |
protected function lookup(Request $request, $catch = false) | |
{ | |
$this->removeUnusedCookies($request); | |
return parent::lookup($request, $catch); | |
} | |
protected function store(Request $request, Response $response) | |
{ | |
$this->removeUnusedCookies($request, $response); | |
parent::store($request, $response); | |
} | |
private function removeUnusedCookies(Request $request, Response $response = null) | |
{ | |
$cookie = $request->headers->get('cookie'); | |
if (empty($cookie)) { | |
return; | |
} | |
preg_match_all('/(?P<names>[^=]+)=(?P<values>[^\;]+)(;\s)?/im', $cookie, $cookieParts); | |
$cookie = array(); | |
foreach ($cookieParts['names'] as $key => $value) { | |
if (in_array($value, $this->cookieWhitelist)) { | |
$cookie[] = $value.'='.$cookieParts['values'][$key]; | |
} | |
} | |
if (empty($cookie)) { | |
$request->headers->remove('cookie'); | |
} else { | |
$request->headers->set('cookie', implode(';', $cookie)); | |
} | |
if ($response instanceof Response) { | |
foreach ($response->headers->getCookies() as $cookie) { | |
$name = $cookie->getName(); | |
if (!in_array($name, $this->cookieWhitelist)) { | |
$response->headers->removeCookie($name); | |
} | |
} | |
} | |
} | |
} |
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