9.5/_folder_mounts_restriction_8php_source.html

<?php

declare(strict_types = 1);

namespace ‪TYPO3\CMS\Core\Resource\Search\QueryRestrictions;


/*

 * 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!

 */


use ‪TYPO3\CMS\Core\Authentication\BackendUserAuthentication;

use ‪TYPO3\CMS\Core\Database\Query\Expression\CompositeExpression;

use ‪TYPO3\CMS\Core\Database\Query\Expression\ExpressionBuilder;

use ‪TYPO3\CMS\Core\Database\Query\Restriction\AbstractRestrictionContainer;

use ‪TYPO3\CMS\Core\Resource\Folder;

use ‪TYPO3\CMS\Core\Resource\ResourceFactory;


class ‪FolderMountsRestriction extends ‪AbstractRestrictionContainer

{

    private ‪$backendUser;


    private ‪$folderMounts;


    public function ‪__construct(‪BackendUserAuthentication ‪$backendUser)

    {

        $this->backendUser = ‪$backendUser;

        $this->‪populateRestrictions();

    }


    private function ‪populateRestrictions(): void

    {

        if ($this->backendUser->isAdmin()) {

            return;

        }

        foreach ($this->‪getFolderMounts() as $folder) {

            $this->‪add(new ‪FolderRestriction($folder, true));

        }

    }


    public function ‪buildExpression(array $queriedTables, ExpressionBuilder $expressionBuilder): CompositeExpression

    {

        if (!$this->backendUser->isAdmin() && empty($this->‪getFolderMounts())) {

            // If the user isn't an admin but has no mounted folders, add an expression leading to an empty result

            return $expressionBuilder->andX('1=0');

        }

        $constraints = [];

        foreach ($this->restrictions as $restriction) {

            $constraints[] = $restriction->buildExpression($queriedTables, $expressionBuilder);

        }

        return $expressionBuilder->orX(...$constraints);

    }


    private function ‪getFolderMounts(): array

    {

        if ($this->folderMounts !== null) {

            return ‪$this->folderMounts;

        }

        $this->folderMounts = [];

        $fileMounts = $this->backendUser->getFileMountRecords();

        foreach ($fileMounts as $fileMount) {

            $this->folderMounts[] = ‪ResourceFactory::getInstance()->‪getFolderObjectFromCombinedIdentifier($fileMount['base'] . ':' . $fileMount['path']);

        }


        return ‪$this->folderMounts;

    }

}