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Attachment.php
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Attachment.php
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<?php
/************************************************************************
* This file is part of EspoCRM.
*
* EspoCRM – Open Source CRM application.
* Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
* Website: https://www.espocrm.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License version 3.
*
* In accordance with Section 7(b) of the GNU Affero General Public License version 3,
* these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
************************************************************************/
namespace Espo\EntryPoints;
use Espo\Core\Utils\Metadata;
use Espo\Entities\Attachment as AttachmentEntity;
use Espo\Core\Acl;
use Espo\Core\Api\Request;
use Espo\Core\Api\Response;
use Espo\Core\EntryPoint\EntryPoint;
use Espo\Core\Exceptions\BadRequest;
use Espo\Core\Exceptions\Forbidden;
use Espo\Core\Exceptions\NotFound;
use Espo\Core\FileStorage\Manager as FileStorageManager;
use Espo\Core\ORM\EntityManager;
class Attachment implements EntryPoint
{
public function __construct(
private FileStorageManager $fileStorageManager,
private EntityManager $entityManager,
private Acl $acl,
private Metadata $metadata
) {}
public function run(Request $request, Response $response): void
{
$id = $request->getQueryParam('id');
if (!$id) {
throw new BadRequest("No id.");
}
$attachment = $this->entityManager
->getRDBRepositoryByClass(AttachmentEntity::class)
->getById($id);
if (!$attachment) {
throw new NotFound("Attachment not found.");
}
if (!$this->acl->checkEntity($attachment)) {
throw new Forbidden("No access to attachment.");
}
if (!$this->fileStorageManager->exists($attachment)) {
throw new NotFound("File not found.");
}
$fileType = $attachment->getType();
if (!in_array($fileType, $this->getAllowedFileTypeList())) {
throw new Forbidden("Not allowed file type '{$fileType}'.");
}
if ($attachment->isBeingUploaded()) {
throw new Forbidden("Attachment is being-uploaded.");
}
if ($fileType) {
$response->setHeader('Content-Type', $fileType);
}
$stream = $this->fileStorageManager->getStream($attachment);
$size = $stream->getSize() ?? $this->fileStorageManager->getSize($attachment);
$response
->setHeader('Pragma', 'public')
->setHeader('Content-Length', (string) $size)
->setHeader('Content-Security-Policy', "default-src 'self'")
->setBody($stream);
}
/**
* @return string[]
*/
private function getAllowedFileTypeList(): array
{
return $this->metadata->get(['app', 'image', 'allowedFileTypeList']) ?? [];
}
}