Your IP : 216.73.217.13
<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Frontend\Middleware;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;
use Psr\Log\LoggerInterface;
use TYPO3\CMS\Core\Cache\Frontend\FrontendInterface;
use TYPO3\CMS\Core\Configuration\Features;
use TYPO3\CMS\Core\Core\RequestId;
use TYPO3\CMS\Core\Security\ContentSecurityPolicy\PolicyProvider;
use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Scope;
use TYPO3\CMS\Core\Security\ContentSecurityPolicy\UriValue;
/**
* Adds Content-Security-Policy headers to response.
*
* @internal
*/
final class ContentSecurityPolicyHeaders implements MiddlewareInterface
{
public function __construct(
private readonly Features $features,
private readonly RequestId $requestId,
private readonly LoggerInterface $logger,
private readonly FrontendInterface $cache,
private readonly PolicyProvider $policyProvider,
) {}
public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
{
// return early in case CSP shall not be used
if (!$this->features->isFeatureEnabled('security.frontend.enforceContentSecurityPolicy')) {
return $handler->handle($request);
}
// make sure, the nonce value is set before processing the remaining middlewares
$request = $request->withAttribute('nonce', $this->requestId->nonce);
$response = $handler->handle($request);
$site = $request->getAttribute('site');
$scope = Scope::frontendSite($site);
if ($response->hasHeader('Content-Security-Policy') || $response->hasHeader('Content-Security-Policy-Report-Only')) {
$this->logger->info('Content-Security-Policy not enforced due to existence of custom header', [
'scope' => (string)$scope,
'uri' => (string)$request->getUri(),
]);
return $response;
}
$policy = $this->policyProvider->provideFor($scope);
if ($policy->isEmpty()) {
return $response;
}
$reportingUri = $this->policyProvider->getReportingUrlFor($scope, $request);
if ($reportingUri !== null) {
$policy = $policy->report(UriValue::fromUri($reportingUri));
}
return $response->withHeader('Content-Security-Policy', $policy->compile($this->requestId->nonce, $this->cache));
}
}