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authorChristian Grothoff <christian@grothoff.org>2020-11-14 17:17:42 +0100
committerChristian Grothoff <christian@grothoff.org>2020-11-14 17:17:42 +0100
commitc90b5703c88339f7bdf909b77a45ea93c21792cd (patch)
treefc3397900dc6bdbcdd17cf773f6d60e53abc025a /src/messenger/gnunet-service-messenger_basement.c
parentf62e24a88c21235bc3c901508cfb474509ef2961 (diff)
parentd36019fe48ff1e4e56754ef3e689bd67445a38f6 (diff)
downloadgnunet-c90b5703c88339f7bdf909b77a45ea93c21792cd.tar.gz
gnunet-c90b5703c88339f7bdf909b77a45ea93c21792cd.zip
Merge branch 'master' of git+ssh://gnunet.org/gnunet
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1/*
2 This file is part of GNUnet.
3 Copyright (C) 2020 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19 */
20/**
21 * @author Tobias Frisch
22 * @file src/messenger/gnunet-service-messenger_basement.c
23 * @brief GNUnet MESSENGER service
24 */
25
26#include "gnunet-service-messenger_basement.h"
27
28size_t
29count_of_tunnels (const struct GNUNET_MESSENGER_ListTunnels *tunnels)
30{
31 const struct GNUNET_MESSENGER_ListTunnel *element;
32 size_t count = 0;
33
34 for (element = tunnels->head; element; element = element->next)
35 count++;
36
37 return count;
38}
39
40int
41should_connect_tunnel_to (size_t count, size_t src, size_t dst)
42{
43 if ((src + 1) % count == dst % count)
44 return GNUNET_YES;
45
46 return GNUNET_NO;
47}
48
49int
50required_connection_between (size_t count, size_t src, size_t dst)
51{
52 if (GNUNET_YES == should_connect_tunnel_to (count, src, dst))
53 return GNUNET_YES;
54 if (GNUNET_YES == should_connect_tunnel_to (count, dst, src))
55 return GNUNET_YES;
56
57 return GNUNET_NO;
58}