gnunet-service-messenger_room.h

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/*
   This file is part of GNUnet.
   Copyright (C) 2020 GNUnet e.V.

   GNUnet 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.

   GNUnet 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/>.

   SPDX-License-Identifier: AGPL3.0-or-later
 */
#ifndef GNUNET_SERVICE_MESSENGER_ROOM_H
#define GNUNET_SERVICE_MESSENGER_ROOM_H

#include "platform.h"
#include "gnunet_cadet_service.h"
#include "gnunet_container_lib.h"
#include "gnunet_crypto_lib.h"
#include "gnunet_identity_service.h"
#include "gnunet_mq_lib.h"

#include "gnunet-service-messenger_contact.h"

#include "gnunet_messenger_service.h"
#include "gnunet-service-messenger_basement.h"
#include "gnunet-service-messenger_handle.h"
#include "gnunet-service-messenger_tunnel.h"

#include "gnunet-service-messenger_list_messages.h"
#include "messenger_api_list_tunnels.h"

#include "gnunet-service-messenger_message_store.h"
#include "messenger_api_ego.h"

enum GNUNET_MESSENGER_MemberAccess
{
  GNUNET_MESSENGER_MEMBER_ALLOWED = 1,
  GNUNET_MESSENGER_MEMBER_BLOCKED = 1,

  GNUNET_MESSENGER_MEMBER_UNKNOWN = 0
};

struct GNUNET_MESSENGER_MemberInfo
{
  enum GNUNET_MESSENGER_MemberAccess access;

  struct GNUNET_MESSENGER_ListMessages session_messages;
};

struct GNUNET_MESSENGER_SrvRoom
{
  struct GNUNET_MESSENGER_Service *service;
  struct GNUNET_MESSENGER_SrvHandle *host;
  struct GNUNET_CADET_Port *port;

  struct GNUNET_HashCode key;

  struct GNUNET_CONTAINER_MultiPeerMap *tunnels;
  struct GNUNET_CONTAINER_MultiShortmap *members;
  struct GNUNET_CONTAINER_MultiShortmap *member_infos;

  struct GNUNET_MESSENGER_MessageStore store;
  struct GNUNET_CONTAINER_MultiHashMap *requested;

  struct GNUNET_MESSENGER_ListTunnels basement;
  struct GNUNET_MESSENGER_ListMessages last_messages;

  struct GNUNET_HashCode *peer_message;

  struct GNUNET_MESSENGER_ListMessages handling;
  struct GNUNET_SCHEDULER_Task *idle;

  int strict_access;
};

struct GNUNET_MESSENGER_SrvRoom*
create_room (struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key);

void
destroy_room (struct GNUNET_MESSENGER_SrvRoom *room);

struct GNUNET_MESSENGER_SrvContact*
get_room_contact (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_ShortHashCode *id);

void
add_room_contact (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_ShortHashCode *id,
                  const struct GNUNET_IDENTITY_PublicKey *pubkey);

struct GNUNET_MESSENGER_MemberInfo*
get_room_member_info (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_ShortHashCode *id);

struct GNUNET_ShortHashCode*
generate_room_member_id (const struct GNUNET_MESSENGER_SrvRoom *room);

const struct GNUNET_ShortHashCode*
get_room_host_id (const struct GNUNET_MESSENGER_SrvRoom *room);

void
change_room_host_id (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_ShortHashCode *unique_id);

int
open_room (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle);

int
entry_room_at (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle,
               const struct GNUNET_PeerIdentity *door);

struct GNUNET_MESSENGER_SrvTunnel*
find_room_tunnel_to (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_ShortHashCode *contact_id);

struct GNUNET_MQ_Envelope*
pack_room_message (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle,
                   struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash, int mode);

void
send_room_message (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle,
                   struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash);

void
send_room_message_ext (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle,
                       struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash,
                       struct GNUNET_MESSENGER_SrvTunnel *tunnel);

void
forward_room_message (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
                      const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);

void
merge_room_last_messages (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle);

struct GNUNET_CADET_Handle*
get_room_cadet (struct GNUNET_MESSENGER_SrvRoom *room);

struct GNUNET_HashCode*
get_room_key (struct GNUNET_MESSENGER_SrvRoom *room);

const struct GNUNET_MESSENGER_SrvTunnel*
get_room_tunnel (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_PeerIdentity *peer);

const struct GNUNET_MESSENGER_Message*
get_room_message (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle,
                  const struct GNUNET_HashCode *hash, int request);

void
update_room_last_messages (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_MESSENGER_Message *message,
                           const struct GNUNET_HashCode *hash);

void
switch_room_member_id (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_ShortHashCode *old_id,
                       const struct GNUNET_ShortHashCode *new_id, const struct GNUNET_HashCode *hash);

void
rebuild_room_basement_structure (struct GNUNET_MESSENGER_SrvRoom *room);

void
handle_room_messages (struct GNUNET_MESSENGER_SrvRoom *room);

#endif //GNUNET_SERVICE_MESSENGER_ROOM_H