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<?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\Backend\Middleware;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;
use Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerAwareTrait;
use TYPO3\CMS\Backend\Controller\Security\SudoModeController;
use TYPO3\CMS\Backend\Security\SudoMode\Access\AccessStorage;
use TYPO3\CMS\Backend\Security\SudoMode\Exception\RequestGrantedException;
use TYPO3\CMS\Backend\Security\SudoMode\Exception\VerificationRequiredException;
use TYPO3\CMS\Core\Http\RedirectResponse;
/**
* Middleware that catches any `VerificationRequiredException` (= the current
* user must verify the access for a particular resource, route, module) by
* entering their password again; and any `RequestGrantedException` (= the
* verification process was successful & the user shall be redirected to
* the URI, that has been requested originally).
*/
final class SudoModeInterceptor implements MiddlewareInterface, LoggerAwareInterface
{
use LoggerAwareTrait;
public function __construct(
private readonly AccessStorage $storage,
private readonly SudoModeController $controller,
) {}
public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
{
try {
return $handler->handle($request);
} catch (VerificationRequiredException $exception) {
return $this->handleVerificationRequired($exception);
} catch (RequestGrantedException $exception) {
return $this->handleRequestGrantedException($exception);
}
}
/**
* Redirects to the sudo mode controller, and renders the password verification dialog.
*/
private function handleVerificationRequired(VerificationRequiredException $exception): ResponseInterface
{
$claim = $exception->getClaim();
$this->logger->info('Confirmation required', ['claim' => $claim->id]);
$this->storage->addClaim($claim);
$uri = $this->controller->buildModuleActionUriForClaim($claim);
return new RedirectResponse($uri, 401);
}
/**
* Redirects to the URI that was originally requested (prior to this sudo mode interception).
*/
private function handleRequestGrantedException(RequestGrantedException $exception): ?ResponseInterface
{
$instruction = $exception->getInstruction();
// other request methods than HTTP GET are currently not supported
// (there is much more to do, in terms of intercepting AJAX request etc.)
if ($instruction->getMethod() === 'GET') {
return new RedirectResponse($instruction->getUri(), 303);
}
return null;
}
}