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<?php
declare(strict_types=1);
/**
*
* @copyright Copyright (c) 2018, Daniel Calviño Sánchez (danxuliu@gmail.com)
*
* @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\Spreed\Share\Helper;
use OCA\Spreed\Exceptions\ParticipantNotFoundException;
use OCA\Spreed\Exceptions\RoomNotFoundException;
use OCA\Spreed\Manager;
use OCA\Spreed\Room;
use OCP\AppFramework\OCS\OCSNotFoundException;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\IL10N;
use OCP\IUser;
use OCP\IUserManager;
use OCP\Share\IShare;
/**
* Helper of OCA\Files_Sharing\Controller\ShareAPIController for room shares.
*
* The methods of this class are called from the ShareAPIController to perform
* actions or checks specific to room shares.
*/
class ShareAPIController {
/** @var string */
private $userId;
/** @var IUserManager */
private $userManager;
/** @var Manager */
private $manager;
/** @var ITimeFactory */
protected $timeFactory;
/** @var IL10N */
private $l;
public function __construct(
string $UserId,
IUserManager $userManager,
Manager $manager,
ITimeFactory $timeFactory,
IL10N $l10n
) {
$this->userId = $UserId;
$this->userManager = $userManager;
$this->manager = $manager;
$this->timeFactory = $timeFactory;
$this->l = $l10n;
}
/**
* Formats the specific fields of a room share for OCS output.
*
* The returned fields override those set by the main ShareAPIController.
*
* @param IShare $share
* @return array
*/
public function formatShare(IShare $share): array {
$result = [];
try {
$room = $this->manager->getRoomByToken($share->getSharedWith());
} catch (RoomNotFoundException $e) {
return $result;
}
$result['share_with_displayname'] = $room->getDisplayName($this->userId);
try {
$room->getParticipant($this->userId);
} catch (ParticipantNotFoundException $e) {
// Removing the conversation token from the leaked data if not a participant.
// Adding some unique but reproducable part to the share_with here
// so the avatars for conversations are distinguishable
$result['share_with'] = 'private_conversation_' . substr(sha1($room->getName() . $room->getId()), 0, 6);
}
if ($room->getType() === Room::PUBLIC_CALL) {
$result['token'] = $share->getToken();
}
return $result;
}
/**
* Prepares the given share to be passed to OC\Share20\Manager::createShare.
*
* @param IShare $share
* @param string $shareWith
* @param int $permissions
* @param string $expireDate
* @throws OCSNotFoundException
*/
public function createShare(IShare $share, string $shareWith, int $permissions, string $expireDate): void {
$share->setSharedWith($shareWith);
$share->setPermissions($permissions);
if ($expireDate !== '') {
try {
$expireDate = $this->parseDate($expireDate);
$share->setExpirationDate($expireDate);
} catch (\Exception $e) {
throw new OCSNotFoundException($this->l->t('Invalid date, date format must be YYYY-MM-DD'));
}
}
}
/**
* Make sure that the passed date is valid ISO 8601
* So YYYY-MM-DD
* If not throw an exception
*
* Copied from \OCA\Files_Sharing\Controller\ShareAPIController::parseDate.
*
* @param string $expireDate
* @return \DateTime
* @throws \Exception
*/
private function parseDate(string $expireDate): \DateTime {
try {
$date = $this->timeFactory->getDateTime($expireDate);
} catch (\Exception $e) {
throw new \Exception('Invalid date. Format must be YYYY-MM-DD');
}
if ($date === false) {
throw new \Exception('Invalid date. Format must be YYYY-MM-DD');
}
$date->setTime(0, 0, 0);
return $date;
}
/**
* Returns whether the given user can access the given room share or not.
*
* A user can access a room share only if she is a participant of the room.
*
* @param IShare $share
* @param string $user
* @return bool
*/
public function canAccessShare(IShare $share, string $user): bool {
try {
$room = $this->manager->getRoomByToken($share->getSharedWith());
} catch (RoomNotFoundException $e) {
return false;
}
try {
$room->getParticipant($user);
} catch (ParticipantNotFoundException $e) {
return false;
}
return true;
}
}
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