diff options
Diffstat (limited to 'src/messenger/gnunet-service-messenger_util.c')
-rw-r--r-- | src/messenger/gnunet-service-messenger_util.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/messenger/gnunet-service-messenger_util.c b/src/messenger/gnunet-service-messenger_util.c new file mode 100644 index 000000000..94fc9469d --- /dev/null +++ b/src/messenger/gnunet-service-messenger_util.c @@ -0,0 +1,64 @@ +/* + 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/gnunet-service-messenger_util.c + * @brief GNUnet MESSENGER service + */ + +#include "gnunet-service-messenger_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_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) +{ + 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; +} |