SudoModeInterceptor.php

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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;
 
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);
        }
    }
 
    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);
    }
 
    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;
    }
}