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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2020, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @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 <http://www.gnu.org/licenses/>.
*
*/
namespace OC\AppFramework\Middleware;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\Response;
use OCP\AppFramework\Middleware;
use OCP\IRequest;
class NotModifiedMiddleware extends Middleware {
/** @var IRequest */
private $request;
public function __construct(IRequest $request) {
$this->request = $request;
}
public function afterController($controller, $methodName, Response $response) {
$etagHeader = $this->request->getHeader('IF_NONE_MATCH');
if ($etagHeader !== '' && $response->getETag() !== null && trim($etagHeader) === '"' . $response->getETag() . '"') {
$response->setStatus(Http::STATUS_NOT_MODIFIED);
return $response;
}
$modifiedSinceHeader = $this->request->getHeader('IF_MODIFIED_SINCE');
if ($modifiedSinceHeader !== '' && $response->getLastModified() !== null && trim($modifiedSinceHeader) === $response->getLastModified()->format(\DateTime::RFC2822)) {
$response->setStatus(Http::STATUS_NOT_MODIFIED);
return $response;
}
return $response;
}
}
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