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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_container_lib.h"
#include "gnunet_crypto_lib.h"
#include "gnunet_disk_lib.h"
#include "gnunet_identity_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 ();

#endif //GNUNET_SERVICE_MESSENGER_UTIL_H