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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/messenger_api_util.h
* @brief messenger api: client implementation of GNUnet MESSENGER service
*/
#ifndef GNUNET_SERVICE_MESSENGER_UTIL_H
#define GNUNET_SERVICE_MESSENGER_UTIL_H
#include "platform.h"
#include "gnunet_cadet_service.h"
#include "gnunet_util_lib.h"
#include "gnunet_identity_service.h"
#include "gnunet_messenger_service.h"
/**
* Starts an urgent task to close a CADET channel asynchronously.
*
* @param[in,out] channel Channel
*/
void
delayed_disconnect_channel (struct GNUNET_CADET_Channel *channel);
/**
* Tries to generate an unused member id and store it into the <i>id</i> parameter.
* A map containing all currently used member ids is used to check against.
*
* @param[out] id New member id
* @param[in] members Map of member ids
* @return #GNUNET_YES on success, #GNUNET_NO on failure
*/
int
generate_free_member_id (struct GNUNET_ShortHashCode *id,
const struct GNUNET_CONTAINER_MultiShortmap *members);
/**
* Returns the public identity key of #GNUNET_IDENTITY_ego_get_anonymous() without
* recalculating it every time.
*
* @return anonymous public key
*/
const struct GNUNET_IDENTITY_PublicKey*
get_anonymous_public_key ();
/**
* Converts a Messenger service key of a room to the specific port which
* gets used for the CADET channels.
*
* The port includes upper bits of the #GNUNET_MESSENGER_VERSION to
* reduce the chance of incompatible connections.
*
* @param[in] key Messenger service room key
* @param[out] port CADET service port
*/
void
convert_messenger_key_to_port(const struct GNUNET_HashCode *key,
struct GNUNET_HashCode *port);
#endif //GNUNET_SERVICE_MESSENGER_UTIL_H
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