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/*
This file is part of GNUnet.
Copyright (C) 2020--2024 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
*/
/**
* @author Tobias Frisch
* @file src/messenger/gnunet-service-messenger_message_handle.c
* @brief GNUnet MESSENGER service
*/
#include "gnunet-service-messenger_message_handle.h"
#include "gnunet-service-messenger_room.h"
static void
handle_member_session_switch (struct GNUNET_MESSENGER_MemberSession *session,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
struct GNUNET_MESSENGER_MemberSession *next = switch_member_session (session,
message,
hash);
if (next != session)
add_member_session (next->member, next);
}
void
handle_message_join (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SenderSession *session,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Member (%s) joins room (%s).\n",
GNUNET_sh2s (&(message->header.sender_id)), GNUNET_h2s (
get_srv_room_key (room)));
if (GNUNET_OK != reset_member_session (session->member, hash))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Resetting member session failed!\n");
solve_srv_room_member_collisions (
room,
&(message->body.join.key),
&(message->header.sender_id),
GNUNET_TIME_absolute_ntoh (message->header.timestamp)
);
}
void
handle_message_leave (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SenderSession *session,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Member (%s) leaves room (%s).\n",
GNUNET_sh2s (&(message->header.sender_id)), GNUNET_h2s (
get_srv_room_key (room)));
close_member_session (session->member);
}
void
handle_message_key (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SenderSession *session,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
handle_member_session_switch (session->member, message, hash);
}
void
handle_message_peer (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SenderSession *session,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
struct GNUNET_MESSENGER_PeerStore *store = get_srv_room_peer_store (room);
if (0 == GNUNET_memcmp (session->peer, &(message->body.peer.peer)))
update_store_peer (store, &(message->body.peer.peer), GNUNET_YES);
if (GNUNET_NO == contains_list_tunnels (&(room->basement),
&(message->body.peer.peer)))
add_to_list_tunnels (&(room->basement), &(message->body.peer.peer), hash);
if (room->peer_message)
rebuild_srv_room_basement_structure (room);
}
void
handle_message_id (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SenderSession *session,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
handle_member_session_switch (session->member, message, hash);
solve_srv_room_member_collisions (
room,
get_member_session_public_key (session->member),
&(message->body.id.id),
GNUNET_TIME_absolute_ntoh (message->header.timestamp)
);
}
void
handle_message_miss (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SenderSession *session,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
struct GNUNET_MESSENGER_PeerStore *store = get_srv_room_peer_store (room);
if (0 == GNUNET_memcmp (session->peer, &(message->body.miss.peer)))
update_store_peer (store, &(message->body.miss.peer), GNUNET_NO);
struct GNUNET_MESSENGER_ListTunnel *element = find_list_tunnels (
&(room->basement), &(message->body.miss.peer), NULL);
if (! element)
return;
remove_from_list_tunnels (&(room->basement), element);
if (room->peer_message)
rebuild_srv_room_basement_structure (room);
}
void
handle_message_delete (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SenderSession *session,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
struct GNUNET_TIME_Relative delay = GNUNET_TIME_relative_ntoh (
message->body.deletion.delay);
struct GNUNET_TIME_Absolute action = GNUNET_TIME_absolute_ntoh (
message->header.timestamp);
action = GNUNET_TIME_absolute_add (action, delay);
delay = GNUNET_TIME_absolute_get_difference (GNUNET_TIME_absolute_get (),
action);
delete_srv_room_message (room, session->member,
&(message->body.deletion.hash), delay);
}
void
handle_message_connection (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SenderSession *session,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
struct GNUNET_MESSENGER_ListTunnel *element = find_list_tunnels (
&(room->basement), session->peer, NULL);
if (! element)
return;
memcpy (&(element->connection), &(message->body.connection),
sizeof (struct GNUNET_MESSENGER_MessageConnection));
}
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