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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2016, John Molakvoæ (skjnldsv@protonmail.com)
*
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Joas Schilling <coding@schilljs.com>
* @author John Molakvoæ <skjnldsv@protonmail.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Thomas Citharel <nextcloud@tcit.fr>
*
* @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\Core\Controller;
use OC\Files\AppData\Factory;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\FileDisplayResponse;
use OCP\AppFramework\Http\NotFoundResponse;
use OCP\AppFramework\Http\Response;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\Files\IAppData;
use OCP\Files\NotFoundException;
use OCP\Files\SimpleFS\ISimpleFile;
use OCP\Files\SimpleFS\ISimpleFolder;
use OCP\IRequest;
class CssController extends Controller {
protected IAppData $appData;
protected ITimeFactory $timeFactory;
public function __construct(string $appName,
IRequest $request,
Factory $appDataFactory,
ITimeFactory $timeFactory) {
parent::__construct($appName, $request);
$this->appData = $appDataFactory->get('css');
$this->timeFactory = $timeFactory;
}
/**
* @PublicPage
* @NoCSRFRequired
* @NoSameSiteCookieRequired
*
* @param string $fileName css filename with extension
* @param string $appName css folder name
* @return FileDisplayResponse|NotFoundResponse
*/
public function getCss(string $fileName, string $appName): Response {
try {
$folder = $this->appData->getFolder($appName);
$gzip = false;
$file = $this->getFile($folder, $fileName, $gzip);
} catch (NotFoundException $e) {
return new NotFoundResponse();
}
$response = new FileDisplayResponse($file, Http::STATUS_OK, ['Content-Type' => 'text/css']);
if ($gzip) {
$response->addHeader('Content-Encoding', 'gzip');
}
$ttl = 31536000;
$response->addHeader('Cache-Control', 'max-age='.$ttl.', immutable');
$expires = new \DateTime();
$expires->setTimestamp($this->timeFactory->getTime());
$expires->add(new \DateInterval('PT'.$ttl.'S'));
$response->addHeader('Expires', $expires->format(\DateTime::RFC1123));
$response->addHeader('Pragma', 'cache');
return $response;
}
/**
* @param ISimpleFolder $folder
* @param string $fileName
* @param bool $gzip is set to true if we use the gzip file
* @return ISimpleFile
* @throws NotFoundException
*/
private function getFile(ISimpleFolder $folder, string $fileName, bool &$gzip): ISimpleFile {
$encoding = $this->request->getHeader('Accept-Encoding');
if (strpos($encoding, 'gzip') !== false) {
try {
$gzip = true;
return $folder->getFile($fileName . '.gzip'); # Safari doesn't like .gz
} catch (NotFoundException $e) {
// continue
}
}
$gzip = false;
return $folder->getFile($fileName);
}
}
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