ErrorController.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\Frontend\Controller;
 
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use ‪TYPO3\CMS\Core\Controller\ErrorPageController;
use ‪TYPO3\CMS\Core\Error\Http\InternalServerErrorException;
use ‪TYPO3\CMS\Core\Error\Http\PageNotFoundException;
use ‪TYPO3\CMS\Core\Error\Http\ServiceUnavailableException;
use ‪TYPO3\CMS\Core\Error\PageErrorHandler\PageErrorHandlerInterface;
use ‪TYPO3\CMS\Core\Error\PageErrorHandler\PageErrorHandlerNotConfiguredException;
use ‪TYPO3\CMS\Core\Http\HtmlResponse;
use ‪TYPO3\CMS\Core\Http\JsonResponse;
use ‪TYPO3\CMS\Core\Site\Entity\Site;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
 
class ‪ErrorController
{
    public function ‪internalErrorAction(ServerRequestInterface $request, string $message, array $reasons = []): ResponseInterface
    {
        if (!$this->‪isPageUnavailableHandlerConfigured($request)) {
            throw new ‪InternalServerErrorException($message, 1607585445);
        }
        $errorHandler = $this->‪getErrorHandlerFromSite($request, 500);
        if ($errorHandler !== null) {
            return $errorHandler->handlePageError($request, $message, $reasons);
        }
        return $this->‪handleDefaultError($request, 500, $message ?: 'Internal Server Error');
    }
 
    public function ‪unavailableAction(ServerRequestInterface $request, string $message, array $reasons = []): ResponseInterface
    {
        if (!$this->‪isPageUnavailableHandlerConfigured($request)) {
            throw new ‪ServiceUnavailableException($message, 1518472181);
        }
        $errorHandler = $this->‪getErrorHandlerFromSite($request, 503);
        if ($errorHandler !== null) {
            return $errorHandler->handlePageError($request, $message, $reasons);
        }
        return $this->‪handleDefaultError($request, 503, $message ?: 'Service Unavailable');
    }
 
    public function ‪pageNotFoundAction(ServerRequestInterface $request, string $message, array $reasons = []): ResponseInterface
    {
        $errorHandler = $this->‪getErrorHandlerFromSite($request, 404);
        if ($errorHandler !== null) {
            return $errorHandler->handlePageError($request, $message, $reasons);
        }
        try {
            return $this->‪handleDefaultError($request, 404, $message);
        } catch (\RuntimeException $e) {
            throw new ‪PageNotFoundException($message, 1518472189);
        }
    }
 
    public function ‪accessDeniedAction(ServerRequestInterface $request, string $message, array $reasons = []): ResponseInterface
    {
        $errorHandler = $this->‪getErrorHandlerFromSite($request, 403);
        if ($errorHandler !== null) {
            return $errorHandler->handlePageError($request, $message, $reasons);
        }
        try {
            return $this->‪handleDefaultError($request, 403, $message);
        } catch (\RuntimeException $e) {
            throw new ‪PageNotFoundException($message, 1518472195);
        }
    }
 
    protected function ‪isPageUnavailableHandlerConfigured(ServerRequestInterface $request): bool
    {
        $normalizedParams = $request->getAttribute('normalizedParams');
        return !‪GeneralUtility::cmpIP($normalizedParams->getRemoteAddress(), ‪$GLOBALS['TYPO3_CONF_VARS']['SYS']['devIPmask']);
    }
 
    protected function ‪getErrorHandlerFromSite(ServerRequestInterface $request, int ‪$statusCode): ?‪PageErrorHandlerInterface
    {
        $site = $request->getAttribute('site');
        if ($site instanceof ‪Site) {
            try {
                return $site->getErrorHandler(‪$statusCode);
            } catch (‪PageErrorHandlerNotConfiguredException $e) {
                // No error handler found, so fallback back to the generic TYPO3 error handler.
            }
        }
        return null;
    }
 
    protected function ‪handleDefaultError(ServerRequestInterface $request, int ‪$statusCode, string $reason = ''): ResponseInterface
    {
        if (str_contains($request->getHeaderLine('Accept'), 'application/json')) {
            return new ‪JsonResponse(['reason' => $reason], ‪$statusCode);
        }
        $content = GeneralUtility::makeInstance(ErrorPageController::class)->errorAction(
            'Page Not Found',
            'The page did not exist or was inaccessible.' . ($reason ? ' Reason: ' . $reason : ''),
            0,
            ‪$statusCode
        );
        return new ‪HtmlResponse($content, ‪$statusCode);
    }
}