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/*
This file is part of GNUnet.
Copyright (C) 2010, 2011, 2012 Christian Grothoff
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU 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.
*/
/**
* @file tun/test_tun.c
* @brief test for tun.c
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_tun_lib.h"
static int ret;
static void
test_udp (size_t pll,
int pl_fill,
uint16_t crc)
{
struct GNUNET_TUN_IPv4Header ip;
struct GNUNET_TUN_UdpHeader udp;
char payload[pll];
struct in_addr src;
struct in_addr dst;
GNUNET_assert (1 == inet_pton (AF_INET, "1.2.3.4", &src));
GNUNET_assert (1 == inet_pton (AF_INET, "122.2.3.5", &dst));
memset (payload, pl_fill, sizeof (payload));
GNUNET_TUN_initialize_ipv4_header (&ip,
IPPROTO_UDP,
pll + sizeof (udp),
&src,
&dst);
udp.source_port = htons (4242);
udp.destination_port = htons (4242);
udp.len = htons (pll);
GNUNET_TUN_calculate_udp4_checksum (&ip,
&udp,
payload,
pll);
if (crc != ntohs (udp.crc))
{
fprintf (stderr, "Got CRC: %u, wanted: %u\n",
ntohs (udp.crc),
crc);
ret = 1;
}
}
int main (int argc,
char **argv)
{
test_udp (4, 3, 22439);
test_udp (4, 1, 23467);
test_udp (7, 17, 6516);
test_udp (12451, 251, 42771);
return ret;
}
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