FormSlugAjaxController.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\Controller;
 
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use ‪TYPO3\CMS\Backend\Utility\BackendUtility;
use ‪TYPO3\CMS\Core\DataHandling\Model\RecordStateFactory;
use ‪TYPO3\CMS\Core\DataHandling\SlugHelper;
use ‪TYPO3\CMS\Core\Http\JsonResponse;
use ‪TYPO3\CMS\Core\Utility\ArrayUtility;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
 
class ‪FormSlugAjaxController extends ‪AbstractFormEngineAjaxController
{
 
    public function ‪suggestAction(ServerRequestInterface $request): ResponseInterface
    {
        $this->‪checkRequest($request);
 
        $queryParameters = $request->getParsedBody() ?? [];
        $values = $queryParameters['values'];
        $mode = $queryParameters['mode'];
        $tableName = (string)($queryParameters['tableName'] ?? '');
        $pid = (int)$queryParameters['pageId'];
        $parentPageId = (int)$queryParameters['parentPageId'];
        $recordId = (int)$queryParameters['recordId'];
        $languageId = (int)$queryParameters['language'];
        $fieldName = $queryParameters['fieldName'];
 
        $fieldConfig = ‪$GLOBALS['TCA'][$tableName]['columns'][$fieldName]['config'] ?? [];
        $row = (array)‪BackendUtility::getRecord($tableName, $recordId);
        $recordType = ‪BackendUtility::getTCAtypeValue($tableName, $row);
        $columnsOverridesConfigOfField = ‪$GLOBALS['TCA'][$tableName]['types'][$recordType]['columnsOverrides'][$fieldName]['config'] ?? null;
        if ($columnsOverridesConfigOfField) {
            ‪ArrayUtility::mergeRecursiveWithOverrule($fieldConfig, $columnsOverridesConfigOfField);
        }
        if (empty($fieldConfig)) {
            throw new \RuntimeException(
                'No valid field configuration for table ' . $tableName . ' field name ' . $fieldName . ' found.',
                1535379534
            );
        }
 
        $evalInfo = !empty($fieldConfig['eval']) ? ‪GeneralUtility::trimExplode(',', $fieldConfig['eval'], true) : [];
        $hasToBeUniqueInDb = in_array('unique', $evalInfo, true);
        $hasToBeUniqueInSite = in_array('uniqueInSite', $evalInfo, true);
        $hasToBeUniqueInPid = in_array('uniqueInPid', $evalInfo, true);
 
        $hasConflict = false;
 
        $recordData = $values;
        if (!isset($recordData['uid'])) {
            $recordData['uid'] = $recordId;
        }
        $recordData['pid'] = $pid;
        if (!empty(‪$GLOBALS['TCA'][$tableName]['ctrl']['languageField'])) {
            $recordData[‪$GLOBALS['TCA'][$tableName]['ctrl']['languageField']] = $languageId;
        }
        if ($tableName === 'pages' && empty($recordData['is_siteroot'])) {
            $recordData['is_siteroot'] = $row['is_siteroot'];
        }
 
        $slug = GeneralUtility::makeInstance(SlugHelper::class, $tableName, $fieldName, $fieldConfig);
        if ($mode === 'auto') {
            // New page - Feed incoming values to generator
            $proposal = $slug->generate($recordData, $pid);
        } elseif ($mode === 'recreate') {
            $proposal = $slug->generate($recordData, $parentPageId);
        } elseif ($mode === 'manual') {
            // Existing record - Fetch full record and only validate against the new "slug" field.
            $proposal = $slug->sanitize($values['manual']);
        } else {
            throw new \RuntimeException('mode must be either "auto", "recreate" or "manual"', 1535835666);
        }
 
        $state = ‪RecordStateFactory::forName($tableName)
            ->fromArray($recordData, $pid, $recordId);
        if ($hasToBeUniqueInDb && !$slug->isUniqueInTable($proposal, $state)) {
            $hasConflict = true;
            $proposal = $slug->buildSlugForUniqueInTable($proposal, $state);
        }
        if ($hasToBeUniqueInSite && !$slug->isUniqueInSite($proposal, $state)) {
            $hasConflict = true;
            $proposal = $slug->buildSlugForUniqueInSite($proposal, $state);
        }
        if ($hasToBeUniqueInPid && !$slug->isUniqueInPid($proposal, $state)) {
            $hasConflict = true;
            $proposal = $slug->buildSlugForUniqueInPid($proposal, $state);
        }
 
        return new ‪JsonResponse([
            'hasConflicts' => $hasConflict,
            'manual' => $values['manual'] ?? '',
            'proposal' => $proposal,
        ]);
    }
 
    protected function ‪checkRequest(ServerRequestInterface $request): bool
    {
        $queryParameters = $request->getParsedBody() ?? [];
        $expectedHash = GeneralUtility::hmac(
            implode(
                '',
                [
                    $queryParameters['tableName'],
                    $queryParameters['pageId'],
                    $queryParameters['recordId'],
                    $queryParameters['language'],
                    $queryParameters['fieldName'],
                    $queryParameters['command'],
                    $queryParameters['parentPageId'],
                ]
            ),
            __CLASS__
        );
        if (!hash_equals($expectedHash, $queryParameters['signature'])) {
            throw new \InvalidArgumentException(
                'HMAC could not be verified',
                1535137045
            );
        }
        return true;
    }
}