2 * $Id: udp.c,v 1.1.1.1 2000/05/25 00:28:49 route Exp $
5 * UDP Packet assembly tester
7 * Copyright (c) 1998, 1999, 2000 Mike D. Schiffman <mike@infonexus.com>
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include "../../include/config.h"
36 #include "../libnet_test.h"
39 main(int argc, char **argv)
42 u_long src_ip, dst_ip;
43 u_short src_prt, dst_prt;
46 printf("UDP packet building/writing test\n");
52 while((c = getopt(argc, argv, "d:s:")) != EOF)
57 * We expect the input to be of the form `ip.ip.ip.ip.port`. We
58 * point cp to the last dot of the IP address/port string and
59 * then seperate them with a NULL byte. The optarg now points to
60 * just the IP address, and cp points to the port.
63 if (!(cp = strrchr(optarg, '.')))
68 dst_prt = (u_short)atoi(cp);
69 if (!(dst_ip = libnet_name_resolve(optarg, 1)))
71 fprintf(stderr, "Bad destination IP address: %s\n", optarg);
76 if (!(cp = strrchr(optarg, '.')))
81 src_prt = (u_short)atoi(cp);
82 if (!(src_ip = libnet_name_resolve(optarg, 1)))
84 fprintf(stderr, "Bad source IP address: %s\n", optarg);
90 if (!src_ip || !src_prt || !dst_ip || !dst_prt)
96 buf = malloc(LIBNET_UDP_H + LIBNET_IP_H);
99 perror("No memory for packet header");
103 sock = libnet_open_raw_sock(IPPROTO_RAW);
110 libnet_build_ip(LIBNET_UDP_H,
122 libnet_build_udp(src_prt, dst_prt, NULL, 0, buf + LIBNET_IP_H);
124 libnet_do_checksum(buf, IPPROTO_UDP, LIBNET_UDP_H);
126 c = libnet_write_ip(sock, buf, LIBNET_UDP_H + LIBNET_IP_H);
127 if (c < LIBNET_UDP_H + LIBNET_IP_H)
129 fprintf(stderr, "libnet_write_ip\n");
131 printf("Completed, wrote %d bytes\n", c);
135 return (c == -1 ? EXIT_FAILURE : EXIT_SUCCESS);
143 "usage: %s -s source_ip.source_port -d destination_ip.destination_port\n",