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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
* @copyright Copyright (c) 2016, Björn Schießle <bjoern@schiessle.org>
*
* @author Allan Nordhøy <epost@anotheragency.no>
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
* @author Bjoern Schiessle <bjoern@schiessle.org>
* @author Björn Schießle <bjoern@schiessle.org>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Julius Härtl <jus@bitgrid.net>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\FederatedFileSharing\Controller;
use OCA\DAV\Connector\Sabre\PublicAuth;
use OCA\FederatedFileSharing\AddressHandler;
use OCA\FederatedFileSharing\FederatedShareProvider;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\Attribute\OpenAPI;
use OCP\AppFramework\Http\JSONResponse;
use OCP\Constants;
use OCP\Federation\ICloudIdManager;
use OCP\HintException;
use OCP\Http\Client\IClientService;
use OCP\IL10N;
use OCP\IRequest;
use OCP\ISession;
use OCP\IUserSession;
use OCP\Share\IManager;
use OCP\Share\IShare;
use Psr\Log\LoggerInterface;
/**
* Class MountPublicLinkController
*
* convert public links to federated shares
*
* @package OCA\FederatedFileSharing\Controller
*/
#[OpenAPI(scope: OpenAPI::SCOPE_FEDERATION)]
class MountPublicLinkController extends Controller {
/**
* MountPublicLinkController constructor.
*/
public function __construct(
string $appName,
IRequest $request,
private FederatedShareProvider $federatedShareProvider,
private IManager $shareManager,
private AddressHandler $addressHandler,
private ISession $session,
private IL10N $l,
private IUserSession $userSession,
private IClientService $clientService,
private ICloudIdManager $cloudIdManager,
private LoggerInterface $logger,
) {
parent::__construct($appName, $request);
}
/**
* send federated share to a user of a public link
*
* @NoCSRFRequired
* @PublicPage
* @BruteForceProtection(action=publicLink2FederatedShare)
*
* @param string $shareWith Username to share with
* @param string $token Token of the share
* @param string $password Password of the share
* @return JSONResponse<Http::STATUS_OK, array{remoteUrl: string}, array{}>|JSONResponse<Http::STATUS_BAD_REQUEST, array{message: string}, array{}>
* 200: Remote URL returned
* 400: Creating share is not possible
*/
public function createFederatedShare($shareWith, $token, $password = '') {
if (!$this->federatedShareProvider->isOutgoingServer2serverShareEnabled()) {
return new JSONResponse(
['message' => 'This server doesn\'t support outgoing federated shares'],
Http::STATUS_BAD_REQUEST
);
}
try {
[, $server] = $this->addressHandler->splitUserRemote($shareWith);
$share = $this->shareManager->getShareByToken($token);
} catch (HintException $e) {
$response = new JSONResponse(['message' => $e->getHint()], Http::STATUS_BAD_REQUEST);
$response->throttle();
return $response;
}
// make sure that user is authenticated in case of a password protected link
$storedPassword = $share->getPassword();
$authenticated = $this->session->get(PublicAuth::DAV_AUTHENTICATED) === $share->getId() ||
$this->shareManager->checkPassword($share, $password);
if (!empty($storedPassword) && !$authenticated) {
$response = new JSONResponse(
['message' => 'No permission to access the share'],
Http::STATUS_BAD_REQUEST
);
$response->throttle();
return $response;
}
if (($share->getPermissions() & Constants::PERMISSION_READ) === 0) {
$response = new JSONResponse(
['message' => 'Mounting file drop not supported'],
Http::STATUS_BAD_REQUEST
);
$response->throttle();
return $response;
}
$share->setSharedWith($shareWith);
$share->setShareType(IShare::TYPE_REMOTE);
try {
$this->federatedShareProvider->create($share);
} catch (\Exception $e) {
$this->logger->warning($e->getMessage(), [
'app' => 'federatedfilesharing',
'exception' => $e,
]);
return new JSONResponse(['message' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
}
return new JSONResponse(['remoteUrl' => $server]);
}
/**
* ask other server to get a federated share
*
* @NoAdminRequired
*
* @param string $token
* @param string $remote
* @param string $password
* @param string $owner (only for legacy reasons, can be removed with legacyMountPublicLink())
* @param string $ownerDisplayName (only for legacy reasons, can be removed with legacyMountPublicLink())
* @param string $name (only for legacy reasons, can be removed with legacyMountPublicLink())
* @return JSONResponse
*/
public function askForFederatedShare($token, $remote, $password = '', $owner = '', $ownerDisplayName = '', $name = '') {
// check if server admin allows to mount public links from other servers
if ($this->federatedShareProvider->isIncomingServer2serverShareEnabled() === false) {
return new JSONResponse(['message' => $this->l->t('Server to server sharing is not enabled on this server')], Http::STATUS_BAD_REQUEST);
}
$cloudId = $this->cloudIdManager->getCloudId($this->userSession->getUser()->getUID(), $this->addressHandler->generateRemoteURL());
$httpClient = $this->clientService->newClient();
try {
$response = $httpClient->post($remote . '/index.php/apps/federatedfilesharing/createFederatedShare',
[
'body' =>
[
'token' => $token,
'shareWith' => rtrim($cloudId->getId(), '/'),
'password' => $password
],
'connect_timeout' => 10,
]
);
} catch (\Exception $e) {
if (empty($password)) {
$message = $this->l->t("Couldn't establish a federated share.");
} else {
$message = $this->l->t("Couldn't establish a federated share, maybe the password was wrong.");
}
return new JSONResponse(['message' => $message], Http::STATUS_BAD_REQUEST);
}
$body = $response->getBody();
$result = json_decode($body, true);
if (is_array($result) && isset($result['remoteUrl'])) {
return new JSONResponse(['message' => $this->l->t('Federated Share request sent, you will receive an invitation. Check your notifications.')]);
}
// if we doesn't get the expected response we assume that we try to add
// a federated share from a Nextcloud <= 9 server
$message = $this->l->t("Couldn't establish a federated share, it looks like the server to federate with is too old (Nextcloud <= 9).");
return new JSONResponse(['message' => $message], Http::STATUS_BAD_REQUEST);
}
}
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