PreviewUserAuthentication.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\Workspaces\Authentication;
 
use ‪TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
use ‪TYPO3\CMS\Core\Database\ConnectionPool;
use ‪TYPO3\CMS\Core\Database\Query\Restriction\RootLevelRestriction;
use ‪TYPO3\CMS\Core\Type\Bitmask\Permission;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
 
class ‪PreviewUserAuthentication extends ‪BackendUserAuthentication
{
    public function ‪__construct()
    {
        parent::__construct();
        $this->name = 'ADMCMD_prev';
    }
 
    public function ‪checkWorkspace($wsRec, ‪$fields = '*')
    {
        // If not array, look up workspace record:
        if (!is_array($wsRec)) {
            switch ((int)$wsRec) {
                case '0':
                    $wsRec = ['uid' => (int)$wsRec];
                    break;
                default:
                    $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)->getQueryBuilderForTable('sys_workspace');
                    $queryBuilder->getRestrictions()->add(GeneralUtility::makeInstance(RootLevelRestriction::class));
                    $wsRec = $queryBuilder->select(...‪GeneralUtility::trimExplode(',', ‪$fields))
                        ->from('sys_workspace')
                        ->where($queryBuilder->expr()->eq(
                            'uid',
                            $queryBuilder->createNamedParameter($wsRec, \PDO::PARAM_INT)
                        ))
                        ->orderBy('title')
                        ->setMaxResults(1)
                        ->execute()
                        ->fetch(\PDO::FETCH_ASSOC);
            }
        }
        // If the workspace exists in the database, the preview user is automatically a member to that workspace
        if (is_array($wsRec)) {
            return array_merge($wsRec, ['_ACCESS' => 'member']);
        }
        return false;
    }
 
    public function ‪getPagePermsClause($perms)
    {
        if ($perms === ‪Permission::PAGE_SHOW) {
            return '1=1';
        }
        return '0=1';
    }
 
    public function ‪calcPerms($row)
    {
        return ‪Permission::PAGE_SHOW;
    }
}