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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
*/
/**
* @author Tobias Frisch
* @file src/messenger/messenger_api_room.c
* @brief messenger api: client implementation of GNUnet MESSENGER service
*/
#include "messenger_api_room.h"
#include "messenger_api_handle.h"
struct GNUNET_MESSENGER_Room*
create_room (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key)
{
struct GNUNET_MESSENGER_Room *room = GNUNET_new(struct GNUNET_MESSENGER_Room);
room->handle = handle;
GNUNET_memcpy(&(room->key), key, sizeof(*key));
room->opened = GNUNET_NO;
room->contact_id = NULL;
room->members = GNUNET_CONTAINER_multishortmap_create (8, GNUNET_NO);
init_list_tunnels (&(room->entries));
room->messages = GNUNET_CONTAINER_multihashmap_create (8, GNUNET_NO);
return room;
}
static int
iterate_destroy_message (void *cls, const struct GNUNET_HashCode *key, void *value)
{
struct GNUNET_MESSENGER_Message *message = value;
destroy_message (message);
return GNUNET_YES;
}
void
destroy_room (struct GNUNET_MESSENGER_Room *room)
{
if (room->members)
GNUNET_CONTAINER_multishortmap_destroy (room->members);
clear_list_tunnels (&(room->entries));
if (room->messages)
{
GNUNET_CONTAINER_multihashmap_iterate (room->messages, iterate_destroy_message, NULL);
GNUNET_CONTAINER_multihashmap_destroy (room->messages);
}
if (room->contact_id)
GNUNET_free(room->contact_id);
GNUNET_free(room);
}
const struct GNUNET_MESSENGER_Message*
get_room_message (const struct GNUNET_MESSENGER_Room *room, const struct GNUNET_HashCode *hash)
{
return GNUNET_CONTAINER_multihashmap_get (room->messages, hash);
}
static void
handle_join_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
struct GNUNET_MESSENGER_Contact *contact = get_handle_contact_by_pubkey (room->handle, &(message->body.join.key));
if (contact)
GNUNET_CONTAINER_multishortmap_put (room->members, &(message->header.sender_id), contact,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
}
static void
handle_leave_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
GNUNET_CONTAINER_multishortmap_remove_all (room->members, &(message->header.sender_id));
}
static void
handle_name_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
struct GNUNET_MESSENGER_Contact *contact = GNUNET_CONTAINER_multishortmap_get (room->members,
&(message->header.sender_id));
if (contact)
set_contact_name (contact, message->body.name.name);
}
static void
handle_key_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
struct GNUNET_MESSENGER_Contact *contact = GNUNET_CONTAINER_multishortmap_get (room->members,
&(message->header.sender_id));
if (contact)
swap_handle_contact_by_pubkey (room->handle, contact, &(message->body.key.key));
}
static void
handle_id_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
struct GNUNET_MESSENGER_Contact *contact = GNUNET_CONTAINER_multishortmap_get (room->members,
&(message->header.sender_id));
if ((contact) && (GNUNET_OK
== GNUNET_CONTAINER_multishortmap_put (room->members, &(message->body.id.id), contact,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST)))
GNUNET_CONTAINER_multishortmap_remove (room->members, &(message->header.sender_id), contact);
}
static void
handle_miss_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
if ((room->contact_id) && (0 == GNUNET_memcmp(&(message->header.sender_id), room->contact_id)))
{
struct GNUNET_MESSENGER_ListTunnel *match = find_list_tunnels (&(room->entries), &(message->body.miss.peer), NULL);
if (match)
remove_from_list_tunnels (&(room->entries), match);
}
}
void
handle_room_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
if (GNUNET_NO != GNUNET_CONTAINER_multihashmap_contains (room->messages, hash))
return;
switch (message->header.kind)
{
case GNUNET_MESSENGER_KIND_JOIN:
handle_join_message (room, message, hash);
break;
case GNUNET_MESSENGER_KIND_LEAVE:
handle_leave_message (room, message, hash);
break;
case GNUNET_MESSENGER_KIND_NAME:
handle_name_message (room, message, hash);
break;
case GNUNET_MESSENGER_KIND_KEY:
handle_key_message (room, message, hash);
break;
case GNUNET_MESSENGER_KIND_ID:
handle_id_message (room, message, hash);
break;
case GNUNET_MESSENGER_KIND_MISS:
handle_miss_message (room, message, hash);
break;
default:
break;
}
struct GNUNET_MESSENGER_Message *clone = copy_message (message);
if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (room->messages, hash, clone,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
destroy_message (clone);
}
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