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/*
This file is part of GNUnet.
Copyright (C) 2020--2023 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_send.c
* @brief GNUnet MESSENGER service
*/
#include "platform.h"
#include "gnunet-service-messenger_message_send.h"
#include "gnunet-service-messenger_handle.h"
#include "gnunet-service-messenger_member.h"
#include "gnunet-service-messenger_member_session.h"
#include "gnunet-service-messenger_operation.h"
#include "gnunet-service-messenger_room.h"
struct GNUNET_MESSENGER_MemberNotify
{
struct GNUNET_MESSENGER_SrvRoom *room;
struct GNUNET_MESSENGER_SrvHandle *handle;
struct GNUNET_MESSENGER_MemberSession *session;
};
static void
notify_about_members (struct GNUNET_MESSENGER_MemberNotify *notify,
struct GNUNET_MESSENGER_MemberSession *session,
struct GNUNET_CONTAINER_MultiHashMap *map,
int check_permission)
{
if (session->prev)
notify_about_members (notify, session->prev, map, GNUNET_YES);
struct GNUNET_MESSENGER_MessageStore *message_store = get_srv_room_message_store(notify->room);
struct GNUNET_MESSENGER_ListMessage *element;
for (element = session->messages.head; element; element = element->next)
{
if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains(map, &(element->hash)))
continue;
if ((GNUNET_YES == check_permission) &&
(GNUNET_YES != check_member_session_history(notify->session, &(element->hash), GNUNET_NO)))
continue;
if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put(map, &(element->hash), NULL,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Notification of session message could be duplicated!\n");
const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, &(element->hash));
if ((!message) || (GNUNET_YES == is_peer_message (message)))
continue;
struct GNUNET_MESSENGER_SenderSession sender;
sender.member = session;
notify_srv_handle_message (notify->handle, notify->room, &sender, message, &(element->hash));
}
}
static int
iterate_notify_about_members (void *cls,
const struct GNUNET_IDENTITY_PublicKey *public_key,
struct GNUNET_MESSENGER_MemberSession *session)
{
struct GNUNET_MESSENGER_MemberNotify *notify = cls;
if ((notify->session == session) || (GNUNET_YES == is_member_session_completed(session)))
return GNUNET_YES;
struct GNUNET_CONTAINER_MultiHashMap *map = GNUNET_CONTAINER_multihashmap_create(4, GNUNET_NO);
notify_about_members (notify, session, map, GNUNET_NO);
GNUNET_CONTAINER_multihashmap_destroy(map);
return GNUNET_YES;
}
void
send_message_join (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SrvHandle *handle,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
set_srv_handle_key(handle, &(message->body.join.key));
struct GNUNET_MESSENGER_MemberStore *member_store = get_srv_room_member_store(room);
struct GNUNET_MESSENGER_Member *member = add_store_member(member_store, &(message->header.sender_id));
struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of (member, message, hash);
if (!session)
{
GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "A valid session is required to join a room!\n");
goto skip_member_notification;
}
struct GNUNET_MESSENGER_MemberNotify notify;
notify.room = room;
notify.handle = handle;
notify.session = session;
iterate_store_members(get_srv_room_member_store(room), iterate_notify_about_members, ¬ify);
skip_member_notification:
check_srv_room_peer_status(room, NULL);
}
void
send_message_key (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SrvHandle *handle,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
set_srv_handle_key(handle, &(message->body.key.key));
}
void
send_message_peer (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SrvHandle *handle,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
if (!room->peer_message)
room->peer_message = GNUNET_new(struct GNUNET_HashCode);
GNUNET_memcpy(room->peer_message, hash, sizeof(struct GNUNET_HashCode));
}
void
send_message_id (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SrvHandle *handle,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
change_srv_handle_member_id (handle, get_srv_room_key(room), &(message->body.id.id));
}
void
send_message_request (struct GNUNET_MESSENGER_SrvRoom *room,
struct GNUNET_MESSENGER_SrvHandle *handle,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
struct GNUNET_MESSENGER_OperationStore *operation_store = get_srv_room_operation_store(room);
use_store_operation(
operation_store,
&(message->body.request.hash),
GNUNET_MESSENGER_OP_REQUEST,
GNUNET_MESSENGER_REQUEST_DELAY
);
}
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