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/*
This file is part of GNUnet.
Copyright (C) 2020--2021 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_recv.c
* @brief GNUnet MESSENGER service
*/
#include "gnunet-service-messenger_message_recv.h"
#include "gnunet-service-messenger_operation.h"
static int
iterate_forward_members (void *cls, const struct GNUNET_IDENTITY_PublicKey *public_key,
struct GNUNET_MESSENGER_MemberSession *session)
{
struct GNUNET_MESSENGER_SrvTunnel *tunnel = cls;
struct GNUNET_MESSENGER_SrvRoom *room = tunnel->room;
struct GNUNET_MESSENGER_ListMessage *element;
for (element = session->messages.head; element; element = element->next)
forward_tunnel_message(tunnel, get_room_message(room, NULL, &(element->hash), GNUNET_NO), &(element->hash));
return GNUNET_YES;
}
int
recv_message_info (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
{
const uint32_t version = get_tunnel_messenger_version(tunnel);
if (GNUNET_OK != update_tunnel_messenger_version(tunnel, message->body.info.messenger_version))
{
disconnect_tunnel(tunnel);
return GNUNET_NO;
}
if (version == get_tunnel_messenger_version(tunnel))
return GNUNET_NO;
if (room->host)
{
const struct GNUNET_MESSENGER_Ego *ego = get_handle_ego(room->host);
send_tunnel_message (tunnel, room->host, create_message_info(ego));
}
struct GNUNET_PeerIdentity peer;
get_tunnel_peer_identity(tunnel, &peer);
if (GNUNET_YES != contains_list_tunnels(&(room->basement), &peer))
{
struct GNUNET_MESSENGER_MemberStore *member_store = get_room_member_store(room);
iterate_store_members(member_store, iterate_forward_members, tunnel);
}
check_room_peer_status(room, tunnel);
return GNUNET_NO;
}
int
recv_message_peer (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
{
struct GNUNET_PeerIdentity peer;
GNUNET_PEER_resolve (tunnel->peer, &peer);
if (0 == GNUNET_memcmp(&peer, &(message->body.peer.peer)))
{
if (!tunnel->peer_message)
tunnel->peer_message = GNUNET_new(struct GNUNET_HashCode);
GNUNET_memcpy(tunnel->peer_message, &hash, sizeof(hash));
}
return GNUNET_YES;
}
int
recv_message_request (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
{
const struct GNUNET_MESSENGER_Message *msg = get_room_message (
room, NULL, &(message->body.request.hash), GNUNET_NO
);
if (!msg)
{
struct GNUNET_MESSENGER_OperationStore *operation_store = get_room_operation_store(room);
use_store_operation(
operation_store,
&(message->body.request.hash),
GNUNET_MESSENGER_OP_REQUEST,
GNUNET_MESSENGER_REQUEST_DELAY
);
return GNUNET_YES;
}
struct GNUNET_MESSENGER_MemberStore *member_store = get_room_member_store(room);
struct GNUNET_MESSENGER_Member *member = get_store_member_of(member_store, message);
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Callback for message (%s)\n", GNUNET_h2s (hash));
if (!member)
return GNUNET_NO;
struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of(member, message, hash);
if ((!session) || (GNUNET_YES != check_member_session_history(session, hash, GNUNET_NO)))
return GNUNET_NO;
forward_tunnel_message (tunnel, msg, &(message->body.request.hash));
return GNUNET_NO;
}
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