2 * $Id: icmp_mask.c,v 1.1.1.1 2000/05/25 00:28:49 route Exp $
5 * icmp.c - Build an ICMP_HOSTMASK packet at the link layer
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;
45 struct libnet_link_int *l;
47 printf("link layer ICMP packet building/writing test\n");
51 while ((c = getopt(argc, argv, "i:d:s:")) != EOF)
56 if (!(dst_ip = libnet_name_resolve(optarg, 1)))
58 fprintf(stderr, "Bad destination IP address: %s\n", optarg);
66 if (!(src_ip = libnet_name_resolve(optarg, 1)))
68 fprintf(stderr, "Bad source IP address: %s\n", optarg);
77 if (!src_ip || !dst_ip || !device)
83 if ((l = libnet_open_link_interface(device, errbuf)) == NULL)
85 fprintf(stderr, "libnet_open_link_interface: %s\n", errbuf);
88 c = send_icmp(l, device, src_ip, dst_ip);
90 return (c == -1 ? EXIT_FAILURE : EXIT_SUCCESS);
95 send_icmp(struct libnet_link_int *l, u_char *device, u_long src_ip, u_long
101 if (libnet_init_packet(LIBNET_ICMP_MASK_H + LIBNET_IP_H + LIBNET_ETH_H,
104 perror("no packet memory");
111 libnet_build_ethernet(enet_dst, enet_src, ETHERTYPE_IP, NULL, 0, buf);
113 libnet_build_ip(LIBNET_ICMP_MASK_H,
118 IPPROTO_ICMP, /* Transport protocol */
119 src_ip, /* Source IP */
120 dst_ip, /* Destination IP */
121 NULL, /* Pointer to payload (none) */
123 buf + LIBNET_ETH_H); /* Packet header memory */
125 libnet_build_icmp_mask(ICMP_MASKREPLY, /* type */
129 0xffffffff, /* mask */
132 buf + LIBNET_ETH_H + LIBNET_IP_H);
134 libnet_do_checksum(buf + LIBNET_ETH_H, IPPROTO_IP, LIBNET_IP_H);
135 libnet_do_checksum(buf + LIBNET_ETH_H, IPPROTO_ICMP, LIBNET_ICMP_MASK_H);
137 printf("Packet as it will appear on the wire (give or take some byte ordering):");
138 libnet_hex_dump(buf, LIBNET_ETH_H + LIBNET_IP_H + LIBNET_ICMP_MASK_H, 0,
142 n = libnet_write_link_layer(l, device, buf, LIBNET_ETH_H + LIBNET_IP_H
143 + LIBNET_ICMP_MASK_H);
144 if (n != LIBNET_ETH_H + LIBNET_IP_H + LIBNET_ICMP_MASK_H)
146 fprintf(stderr, "Oopz. Only wrote %d bytes\n", n);
150 printf("Wrote %d byte ICMP packet through linktype %d\n", n, l->linktype);
152 libnet_destroy_packet(&buf);
160 fprintf(stderr, "usage: %s -i interface -s source_ip -d destination_ip\n", name);