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CORS Listener and Handling with Symfony2
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<?php | |
namespace AppBundle\EventListener; | |
use Symfony\Component\HttpFoundation\Response; | |
use Symfony\Component\HttpKernel\HttpKernelInterface; | |
use Symfony\Component\HttpKernel\Event\GetResponseEvent; | |
use Symfony\Component\HttpKernel\Event\FilterResponseEvent; | |
class CorsListener | |
{ | |
public function __construct(array $options) | |
{ | |
$this->cors = $options; | |
} | |
public function onKernelRequest(GetResponseEvent $event) | |
{ | |
// Don't do anything if it's not the master request. | |
if (HttpKernelInterface::MASTER_REQUEST !== $event->getRequestType()) { | |
return; | |
} | |
$request = $event->getRequest(); | |
$method = $request->getRealMethod(); | |
// perform preflight checks | |
if ('OPTIONS' === $request->getMethod()) { | |
$response = new Response(); | |
$response->headers->set('Access-Control-Allow-Credentials', 'true'); | |
$response->headers->set('Access-Control-Allow-Methods', 'POST, GET, PUT, DELETE, PATCH, OPTIONS'); | |
$response->headers->set('Access-Control-Allow-Headers', 'Origin, Content-Type, Accept, Authorization'); | |
$response->headers->set('Access-Control-Max-Age', 3600); | |
//$response->headers->set('Access-Control-Allow-Origin', '*'); | |
$event->setResponse($response); | |
return; | |
} | |
} | |
public function onKernelResponse(FilterResponseEvent $event) | |
{ | |
$request = $event->getRequest(); | |
// Run CORS check in here to ensure domain is in the system | |
if (in_array($request->headers->get('origin'), $this->cors)) { | |
$response = $event->getResponse(); | |
$response->headers->set('Access-Control-Allow-Credentials', 'true'); | |
$response->headers->set('Access-Control-Allow-Headers', 'Origin, Content-Type, Accept, Authorization'); | |
$response->headers->set('Access-Control-Allow-Origin', $corsOrigin); | |
$response->headers->set('Access-Control-Allow-Methods', 'POST, GET, PUT, DELETE, PATCH, OPTIONS'); | |
$response->headers->set('Vary', 'Origin'); | |
$event->setResponse($response); | |
} | |
return; | |
} | |
} |
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... | |
<service id="app.tokens.action_listener" class="AppBundle\EventListener\CorsListener"> | |
<argument>%app_bundle.cors.origins%</argument> | |
<tag name="kernel.event_listener" event="kernel.controller" method="onKernelController" /> | |
<tag name="kernel.event_listener" event="kernel.response" method="onKernelResponse" /> | |
<tag name="kernel.event_listener" event="kernel.request" method="onKernelRequest" priority="300" /> | |
</service> | |
... |
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