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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 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
- */
- /**
- * @file tun/test_tun.c
- * @brief test for tun.c
- * @author Christian Grothoff
- */
- #include "platform.h"
- #include "gnunet_util_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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