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<?php
declare(strict_types=1);
/**
* @copyright 2018, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Iscle <albertiscle9@gmail.com>
* @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 OCA\DAV\Controller;
use OCA\DAV\Db\Direct;
use OCA\DAV\Db\DirectMapper;
use OCP\AppFramework\Http\DataResponse;
use OCP\AppFramework\OCS\OCSBadRequestException;
use OCP\AppFramework\OCS\OCSNotFoundException;
use OCP\AppFramework\OCS\OCSForbiddenException;
use OCP\AppFramework\OCSController;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\EventDispatcher\GenericEvent;
use OCP\EventDispatcher\IEventDispatcher;
use OCP\Files\File;
use OCP\Files\IRootFolder;
use OCP\IRequest;
use OCP\IURLGenerator;
use OCP\Security\ISecureRandom;
class DirectController extends OCSController {
/** @var IRootFolder */
private $rootFolder;
/** @var string */
private $userId;
/** @var DirectMapper */
private $mapper;
/** @var ISecureRandom */
private $random;
/** @var ITimeFactory */
private $timeFactory;
/** @var IURLGenerator */
private $urlGenerator;
/** @var IEventDispatcher */
private $eventDispatcher;
public function __construct(string $appName,
IRequest $request,
IRootFolder $rootFolder,
string $userId,
DirectMapper $mapper,
ISecureRandom $random,
ITimeFactory $timeFactory,
IURLGenerator $urlGenerator,
IEventDispatcher $eventDispatcher) {
parent::__construct($appName, $request);
$this->rootFolder = $rootFolder;
$this->userId = $userId;
$this->mapper = $mapper;
$this->random = $random;
$this->timeFactory = $timeFactory;
$this->urlGenerator = $urlGenerator;
$this->eventDispatcher = $eventDispatcher;
}
/**
* @NoAdminRequired
*/
public function getUrl(int $fileId, int $expirationTime = 60 * 60 * 8): DataResponse {
$userFolder = $this->rootFolder->getUserFolder($this->userId);
$files = $userFolder->getById($fileId);
if ($files === []) {
throw new OCSNotFoundException();
}
if ($expirationTime <= 0 || $expirationTime > (60 * 60 * 24)) {
throw new OCSBadRequestException('Expiration time should be greater than 0 and less than or equal to ' . (60 * 60 * 24));
}
$file = array_shift($files);
if (!($file instanceof File)) {
throw new OCSBadRequestException('Direct download only works for files');
}
$event = new GenericEvent(null, ['path' => $userFolder->getRelativePath($file->getPath())]);
$this->eventDispatcher->dispatch('file.beforeGetDirect', $event);
if ($event->getArgument('run') === false) {
throw new OCSForbiddenException('Permission denied to download file');
}
//TODO: at some point we should use the directdownlaod function of storages
$direct = new Direct();
$direct->setUserId($this->userId);
$direct->setFileId($fileId);
$token = $this->random->generate(60, ISecureRandom::CHAR_ALPHANUMERIC);
$direct->setToken($token);
$direct->setExpiration($this->timeFactory->getTime() + $expirationTime);
$this->mapper->insert($direct);
$url = $this->urlGenerator->getAbsoluteURL('remote.php/direct/'.$token);
return new DataResponse([
'url' => $url,
]);
}
}
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