diff options
Diffstat (limited to 'src/messenger/gnunet-service-messenger_basement.c')
-rw-r--r-- | src/messenger/gnunet-service-messenger_basement.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/messenger/gnunet-service-messenger_basement.c b/src/messenger/gnunet-service-messenger_basement.c new file mode 100644 index 000000000..190cf2de5 --- /dev/null +++ b/src/messenger/gnunet-service-messenger_basement.c @@ -0,0 +1,58 @@ +/* + 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_basement.c + * @brief GNUnet MESSENGER service + */ + +#include "gnunet-service-messenger_basement.h" + +size_t +count_of_tunnels (const struct GNUNET_MESSENGER_ListTunnels *tunnels) +{ + const struct GNUNET_MESSENGER_ListTunnel *element; + size_t count = 0; + + for (element = tunnels->head; element; element = element->next) + count++; + + return count; +} + +int +should_connect_tunnel_to (size_t count, size_t src, size_t dst) +{ + if ((src + 1) % count == dst % count) + return GNUNET_YES; + + return GNUNET_NO; +} + +int +required_connection_between (size_t count, size_t src, size_t dst) +{ + if (GNUNET_YES == should_connect_tunnel_to (count, src, dst)) + return GNUNET_YES; + if (GNUNET_YES == should_connect_tunnel_to (count, dst, src)) + return GNUNET_YES; + + return GNUNET_NO; +} |