friendica-github/src/Model/Storage/SystemResource.php

73 lines
2 KiB
PHP

<?php
/**
* @copyright Copyright (C) 2010-2021, the Friendica project
*
* @license GNU AGPL version 3 or any later version
*
* 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/>.
*
*/
namespace Friendica\Model\Storage;
/**
* System resource storage class
*
* This class is used to load system resources, like images.
* Is not intended to be selectable by admins as default storage class.
*/
class SystemResource implements IStorage
{
const NAME = 'SystemResource';
// Valid folders to look for resources
const VALID_FOLDERS = ["images"];
/**
* @inheritDoc
*/
public function get(string $reference): string
{
$folder = dirname($reference);
if (!in_array($folder, self::VALID_FOLDERS)) {
throw new ReferenceStorageException(sprintf('System Resource is invalid for reference %s, no valid folder found', $reference));
}
if (!file_exists($reference)) {
throw new StorageException(sprintf('System Resource is invalid for reference %s, the file doesn\'t exist', $reference));
}
$content = file_get_contents($reference);
if ($content === false) {
throw new StorageException(sprintf('Cannot get content for reference %s', $reference));
}
return $content;
}
/**
* @inheritDoc
*/
public function __toString()
{
return self::NAME;
}
/**
* @inheritDoc
*/
public static function getName(): string
{
return self::NAME;
}
}