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-rw-r--r--src/util/test_tun.c72
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diff --git a/src/util/test_tun.c b/src/util/test_tun.c
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1/*
2 This file is part of GNUnet.
3 Copyright (C) 2010, 2011, 2012 Christian Grothoff
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
19/**
20 * @file tun/test_tun.c
21 * @brief test for tun.c
22 * @author Christian Grothoff
23 */
24#include "platform.h"
25#include "gnunet_tun_lib.h"
26
27static int ret;
28
29static void
30test_udp (size_t pll,
31 int pl_fill,
32 uint16_t crc)
33{
34 struct GNUNET_TUN_IPv4Header ip;
35 struct GNUNET_TUN_UdpHeader udp;
36 char payload[pll];
37 struct in_addr src;
38 struct in_addr dst;
39
40 GNUNET_assert (1 == inet_pton (AF_INET, "1.2.3.4", &src));
41 GNUNET_assert (1 == inet_pton (AF_INET, "122.2.3.5", &dst));
42 memset (payload, pl_fill, sizeof (payload));
43 GNUNET_TUN_initialize_ipv4_header (&ip,
44 IPPROTO_UDP,
45 pll + sizeof (udp),
46 &src,
47 &dst);
48 udp.source_port = htons (4242);
49 udp.destination_port = htons (4242);
50 udp.len = htons (pll);
51 GNUNET_TUN_calculate_udp4_checksum (&ip,
52 &udp,
53 payload,
54 pll);
55 if (crc != ntohs (udp.crc))
56 {
57 fprintf (stderr, "Got CRC: %u, wanted: %u\n",
58 ntohs (udp.crc),
59 crc);
60 ret = 1;
61 }
62}
63
64int main (int argc,
65 char **argv)
66{
67 test_udp (4, 3, 22439);
68 test_udp (4, 1, 23467);
69 test_udp (7, 17, 6516);
70 test_udp (12451, 251, 42771);
71 return ret;
72}