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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.c
* @brief messenger api: client implementation of GNUnet MESSENGER service
*/
#include "messenger_api_util.h"
static void
callback_close_channel (void *cls)
{
struct GNUNET_CADET_Channel *channel = cls;
if (channel)
GNUNET_CADET_channel_destroy (channel);
}
void
delayed_disconnect_channel (struct GNUNET_CADET_Channel *channel)
{
GNUNET_assert(channel);
GNUNET_SCHEDULER_add_delayed_with_priority (GNUNET_TIME_relative_get_zero_ (),
GNUNET_SCHEDULER_PRIORITY_URGENT,
callback_close_channel, channel);
}
int
generate_free_member_id (struct GNUNET_ShortHashCode *id,
const struct GNUNET_CONTAINER_MultiShortmap *members)
{
GNUNET_assert(id);
size_t counter = 1 + (members ? GNUNET_CONTAINER_multishortmap_size (members) : 0);
do
{
GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_STRONG, id, sizeof(struct GNUNET_ShortHashCode));
if ((members) && (GNUNET_YES == GNUNET_CONTAINER_multishortmap_contains (members, id)))
counter--;
else
break;
}
while (counter > 0);
if (counter)
return GNUNET_YES;
return GNUNET_NO;
}
const struct GNUNET_IDENTITY_PublicKey*
get_anonymous_public_key ()
{
static struct GNUNET_IDENTITY_PublicKey public_key;
static struct GNUNET_IDENTITY_Ego* ego = NULL;
if (!ego)
{
ego = GNUNET_IDENTITY_ego_get_anonymous();
GNUNET_IDENTITY_ego_get_public_key(ego, &public_key);
}
return &public_key;
}
void
convert_messenger_key_to_port(const struct GNUNET_HashCode *key,
struct GNUNET_HashCode *port)
{
static uint32_t version_value = 0;
static struct GNUNET_HashCode version;
if (!version_value) {
version_value = (uint32_t) (GNUNET_MESSENGER_VERSION);
version_value = ((version_value >> 16) & 0xFFFF);
version_value = GNUNET_htole32(version_value);
GNUNET_CRYPTO_hash(&version_value, sizeof(version_value), &version);
}
GNUNET_CRYPTO_hash_sum(key, &version, port);
}
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