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<?php
/**
* @copyright Copyright (c) 2016, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Morris Jobke <hey@morrisjobke.de>
* @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\Core\Controller;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\Files\File;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\DataResponse;
use OCP\AppFramework\Http\FileDisplayResponse;
use OCP\Files\IRootFolder;
use OCP\Files\NotFoundException;
use OCP\IPreview;
use OCP\IRequest;
class PreviewController extends Controller {
/** @var string */
private $userId;
/** @var IRootFolder */
private $root;
/** @var IPreview */
private $preview;
/** @var ITimeFactory */
private $timeFactory;
/**
* PreviewController constructor.
*
* @param string $appName
* @param IRequest $request
* @param IPreview $preview
* @param IRootFolder $root
* @param string $userId
*/
public function __construct($appName,
IRequest $request,
IPreview $preview,
IRootFolder $root,
$userId,
ITimeFactory $timeFactory
) {
parent::__construct($appName, $request);
$this->preview = $preview;
$this->root = $root;
$this->userId = $userId;
$this->timeFactory = $timeFactory;
}
/**
* @NoAdminRequired
* @NoCSRFRequired
*
* @param string $file
* @param int $x
* @param int $y
* @param bool $a
* @param bool $forceIcon
* @param string $mode
* @return DataResponse|Http\FileDisplayResponse
*/
public function getPreview(
$file = '',
$x = 32,
$y = 32,
$a = false,
$forceIcon = true,
$mode = 'fill') {
if ($file === '' || $x === 0 || $y === 0) {
return new DataResponse([], Http::STATUS_BAD_REQUEST);
}
try {
$userFolder = $this->root->getUserFolder($this->userId);
$file = $userFolder->get($file);
} catch (NotFoundException $e) {
return new DataResponse([], Http::STATUS_NOT_FOUND);
}
if (!($file instanceof File) || (!$forceIcon && !$this->preview->isAvailable($file))) {
return new DataResponse([], Http::STATUS_NOT_FOUND);
} else if (!$file->isReadable()) {
return new DataResponse([], Http::STATUS_FORBIDDEN);
}
try {
$f = $this->preview->getPreview($file, $x, $y, !$a, $mode);
$response = new FileDisplayResponse($f, Http::STATUS_OK, ['Content-Type' => $f->getMimeType()]);
// Let cache this!
$response->addHeader('Pragma', 'public');
// Cache previews for 24H
$response->cacheFor(3600 * 24);
$expires = new \DateTime();
$expires->setTimestamp($this->timeFactory->getTime());
$expires->add(new \DateInterval('P1D'));
$response->addHeader('Expires', $expires->format(\DateTime::RFC2822));
return $response;
} catch (NotFoundException $e) {
return new DataResponse([], Http::STATUS_NOT_FOUND);
} catch (\InvalidArgumentException $e) {
return new DataResponse([], Http::STATUS_BAD_REQUEST);
}
}
}