<?php declare(strict_types=1);
namespace Shopware\Core\Framework\Routing;
use Shopware\Core\Framework\Log\Package;
use Shopware\Core\Framework\Routing\Annotation\RouteScope as RouteScopeAnnotation;
use Shopware\Core\PlatformRequest;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\RequestEvent;
use Symfony\Component\HttpKernel\Event\ResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;
/**
* @deprecated tag:v6.5.0 - reason:becomes-internal - EventSubscribers will become internal in v6.5.0
*/
#[Package('core')]
class CoreSubscriber implements EventSubscriberInterface
{
/**
* @var array<string>
*/
private array $cspTemplates;
/**
* @internal
*
* @param array<string> $cspTemplates
*/
public function __construct(array $cspTemplates)
{
$this->cspTemplates = $cspTemplates;
}
/**
* @return array<string, string|array{0: string, 1: int}|list<array{0: string, 1?: int}>>
*/
public static function getSubscribedEvents()
{
return [
KernelEvents::REQUEST => 'initializeCspNonce',
KernelEvents::RESPONSE => 'setSecurityHeaders',
];
}
public function initializeCspNonce(RequestEvent $event): void
{
$nonce = base64_encode(random_bytes(8));
$event->getRequest()->attributes->set(PlatformRequest::ATTRIBUTE_CSP_NONCE, $nonce);
}
public function setSecurityHeaders(ResponseEvent $event): void
{
if (!$event->getResponse()->isSuccessful()) {
return;
}
$response = $event->getResponse();
if ($event->getRequest()->isSecure()) {
$response->headers->set('Strict-Transport-Security', 'max-age=31536000; includeSubDomains');
}
$response->headers->set('X-Frame-Options', 'ALLOW');
$response->headers->set('X-Content-Type-Options', 'nosniff');
$response->headers->set('Referrer-Policy', 'strict-origin-when-cross-origin');
$cspTemplate = $this->cspTemplates['default'] ?? '';
$scopes = $event->getRequest()->attributes->get(PlatformRequest::ATTRIBUTE_ROUTE_SCOPE, []);
if ($scopes instanceof RouteScopeAnnotation) {
$scopes = $scopes->getScopes();
}
foreach ($scopes as $scope) {
$cspTemplate = $this->cspTemplates[$scope] ?? $cspTemplate;
}
$cspTemplate = trim($cspTemplate);
if ($cspTemplate !== '' && !$response->headers->has('Content-Security-Policy')) {
$nonce = $event->getRequest()->attributes->get(PlatformRequest::ATTRIBUTE_CSP_NONCE);
if (\is_string($nonce)) {
$csp = str_replace('%nonce%', $nonce, $cspTemplate);
$csp = str_replace(["\n", "\r"], ' ', $csp);
$response->headers->set('Content-Security-Policy', $csp);
}
}
}
}