ResourcePublicationSlot.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\Form\Slot;
 
use ‪TYPO3\CMS\Core\Attribute\AsEventListener;
use ‪TYPO3\CMS\Core\Core\Environment;
use ‪TYPO3\CMS\Core\Resource\Event\GeneratePublicUrlForResourceEvent;
use ‪TYPO3\CMS\Core\Resource\File;
use ‪TYPO3\CMS\Core\Resource\FileInterface;
use ‪TYPO3\CMS\Core\Resource\ProcessedFile;
use ‪TYPO3\CMS\Core\Resource\ResourceInterface;
use ‪TYPO3\CMS\Core\SingletonInterface;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
use ‪TYPO3\CMS\Core\Utility\PathUtility;
 
class ‪ResourcePublicationSlot implements ‪SingletonInterface
{
    protected ‪$fileIdentifiers = [];
 
    #[AsEventListener('form-framework/resource-getPublicUrl')]
    public function ‪getPublicUrl(‪GeneratePublicUrlForResourceEvent $event): void
    {
        $resource = $event->‪getResource();
        if (!$resource instanceof ‪FileInterface
            || !$this->‪has($resource)
            || $event->‪getStorage()->getDriverType() !== 'Local'
        ) {
            return;
        }
        $event->‪setPublicUrl($this->‪getStreamUrl($event->‪getResource()));
    }
 
    public function ‪add(‪FileInterface $resource): void
    {
        if ($this->‪has($resource)) {
            return;
        }
        $this->fileIdentifiers[] = $resource->‪getIdentifier();
    }
 
    public function ‪has(‪FileInterface $resource): bool
    {
        return in_array($resource->‪getIdentifier(), $this->fileIdentifiers, true);
    }
 
    protected function ‪getStreamUrl(‪ResourceInterface $resource): string
    {
        $queryParameterArray = ['eID' => 'dumpFile', 't' => ''];
        if ($resource instanceof ‪File) {
            $queryParameterArray['f'] = $resource->getUid();
            $queryParameterArray['t'] = 'f';
        } elseif ($resource instanceof ‪ProcessedFile) {
            $queryParameterArray['p'] = $resource->getUid();
            $queryParameterArray['t'] = 'p';
        }
 
        $queryParameterArray['token'] = ‪GeneralUtility::hmac(implode('|', $queryParameterArray), 'resourceStorageDumpFile');
        ‪$publicUrl = GeneralUtility::locationHeaderUrl(‪PathUtility::getAbsoluteWebPath(‪Environment::getPublicPath() . '/index.php'));
        ‪$publicUrl .= '?' . http_build_query($queryParameterArray, '', '&', PHP_QUERY_RFC3986);
        return ‪$publicUrl;
    }
}