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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2021 Gary Kim <gary@garykim.dev>
*
* @author Gary Kim <gary@garykim.dev>
*
* @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\Talk\Federation;
use OCA\Talk\AppInfo\Application;
use OCA\Talk\Exceptions\CannotReachRemoteException;
use OCA\Talk\Exceptions\RoomNotFoundException;
use OCA\Talk\Exceptions\UnauthorizedException;
use OCA\Talk\Manager;
use OCA\Talk\Model\Attendee;
use OCA\Talk\Model\Invitation;
use OCA\Talk\Model\InvitationMapper;
use OCA\Talk\Room;
use OCA\Talk\Service\ParticipantService;
use OCP\AppFramework\Db\DoesNotExistException;
use OCP\IUser;
use OCP\Notification\IManager;
use SensitiveParameter;
/**
* Class FederationManager
*
* @package OCA\Talk\Federation
*
* FederationManager handles incoming federated rooms
*/
class FederationManager {
public const TALK_ROOM_RESOURCE = 'talk-room';
public const TALK_PROTOCOL_NAME = 'nctalk';
public const NOTIFICATION_SHARE_ACCEPTED = 'SHARE_ACCEPTED';
public const NOTIFICATION_SHARE_DECLINED = 'SHARE_DECLINED';
public const NOTIFICATION_SHARE_UNSHARED = 'SHARE_UNSHARED';
public const NOTIFICATION_ROOM_MODIFIED = 'ROOM_MODIFIED';
public const TOKEN_LENGTH = 64;
public function __construct(
private Manager $manager,
private ParticipantService $participantService,
private InvitationMapper $invitationMapper,
private BackendNotifier $backendNotifier,
private IManager $notificationManager,
) {
}
public function addRemoteRoom(
IUser $user,
int $remoteAttendeeId,
int $roomType,
string $roomName,
string $remoteToken,
string $remoteServerUrl,
#[SensitiveParameter]
string $sharedSecret,
): Invitation {
try {
$room = $this->manager->getRoomByToken($remoteToken, null, $remoteServerUrl);
} catch (RoomNotFoundException) {
$room = $this->manager->createRemoteRoom($roomType, $roomName, $remoteToken, $remoteServerUrl);
}
$invitation = new Invitation();
$invitation->setUserId($user->getUID());
$invitation->setState(Invitation::STATE_PENDING);
$invitation->setLocalRoomId($room->getId());
$invitation->setAccessToken($sharedSecret);
$invitation->setRemoteServerUrl($remoteServerUrl);
$invitation->setRemoteToken($remoteToken);
$invitation->setRemoteAttendeeId($remoteAttendeeId);
$this->invitationMapper->insert($invitation);
return $invitation;
}
protected function markNotificationProcessed(string $userId, int $shareId): void {
$notification = $this->notificationManager->createNotification();
$notification->setApp(Application::APP_ID)
->setUser($userId)
->setObject('remote_talk_share', (string) $shareId);
$this->notificationManager->markProcessed($notification);
}
/**
* @throws UnauthorizedException
* @throws DoesNotExistException
* @throws CannotReachRemoteException
*/
public function acceptRemoteRoomShare(IUser $user, int $shareId): void {
$invitation = $this->invitationMapper->getInvitationById($shareId);
if ($invitation->getUserId() !== $user->getUID()) {
throw new UnauthorizedException('invitation is for a different user');
}
// Add user to the room
$room = $this->manager->getRoomById($invitation->getLocalRoomId());
if (
!$this->backendNotifier->sendShareAccepted($invitation->getRemoteServerUrl(), $invitation->getRemoteAttendeeId(), $invitation->getAccessToken())
) {
throw new CannotReachRemoteException();
}
$participant = [
[
'actorType' => Attendee::ACTOR_USERS,
'actorId' => $user->getUID(),
'displayName' => $user->getDisplayName(),
'accessToken' => $invitation->getAccessToken(),
'remoteId' => $invitation->getRemoteAttendeeId(), // FIXME this seems unnecessary
]
];
$this->participantService->addUsers($room, $participant, $user);
$invitation->setState(Invitation::STATE_ACCEPTED);
$this->invitationMapper->update($invitation);
$this->markNotificationProcessed($user->getUID(), $shareId);
}
/**
* @throws DoesNotExistException
*/
public function getRemoteShareById(int $shareId): Invitation {
return $this->invitationMapper->getInvitationById($shareId);
}
/**
* @throws UnauthorizedException
* @throws DoesNotExistException
*/
public function rejectRemoteRoomShare(IUser $user, int $shareId): void {
$invitation = $this->invitationMapper->getInvitationById($shareId);
if ($invitation->getUserId() !== $user->getUID()) {
throw new UnauthorizedException('invitation is for a different user');
}
$this->invitationMapper->delete($invitation);
$this->markNotificationProcessed($user->getUID(), $shareId);
$this->backendNotifier->sendShareDeclined($invitation->getRemoteServerUrl(), $invitation->getRemoteAttendeeId(), $invitation->getAccessToken());
}
/**
* @param IUser $user
* @return Invitation[]
*/
public function getRemoteRoomShares(IUser $user): array {
return $this->invitationMapper->getInvitationsForUser($user);
}
public function getNumberOfInvitations(Room $room): int {
return $this->invitationMapper->countInvitationsForLocalRoom($room);
}
}
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