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1/*
2 This file is part of GNUnet.
3 Copyright (C) 2020--2021 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19 */
20/**
21 * @author Tobias Frisch
22 * @file src/messenger/messenger_api_util.h
23 * @brief messenger api: client implementation of GNUnet MESSENGER service
24 */
25
26#ifndef GNUNET_SERVICE_MESSENGER_UTIL_H
27#define GNUNET_SERVICE_MESSENGER_UTIL_H
28
29#include "platform.h"
30#include "gnunet_cadet_service.h"
31#include "gnunet_container_lib.h"
32#include "gnunet_crypto_lib.h"
33#include "gnunet_disk_lib.h"
34#include "gnunet_identity_service.h"
35#include "gnunet_messenger_service.h"
36
37/**
38 * Starts an urgent task to close a CADET channel asynchronously.
39 *
40 * @param[in/out] channel Channel
41 */
42void
43delayed_disconnect_channel (struct GNUNET_CADET_Channel *channel);
44
45/**
46 * Tries to generate an unused member id and store it into the <i>id</i> parameter.
47 * A map containing all currently used member ids is used to check against.
48 *
49 * @param[out] id New member id
50 * @param[in] members Map of member ids
51 * @return #GNUNET_YES on success, #GNUNET_NO on failure
52 */
53int
54generate_free_member_id (struct GNUNET_ShortHashCode *id,
55 const struct GNUNET_CONTAINER_MultiShortmap *members);
56
57/**
58 * Returns the public identity key of #GNUNET_IDENTITY_ego_get_anonymous() without
59 * recalculating it every time.
60 *
61 * @return anonymous public key
62 */
63const struct GNUNET_IDENTITY_PublicKey*
64get_anonymous_public_key ();
65
66/**
67 * Converts a Messenger service key of a room to the specific port which
68 * gets used for the CADET channels.
69 *
70 * The port includes upper bits of the #GNUNET_MESSENGER_VERSION to
71 * reduce the chance of incompatible connections.
72 *
73 * @param[in] key Messenger service room key
74 * @param[out] port CADET service port
75 */
76void
77convert_messenger_key_to_port(const struct GNUNET_HashCode *key,
78 struct GNUNET_HashCode *port);
79
80#endif //GNUNET_SERVICE_MESSENGER_UTIL_H