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- /*
- * $Id: arp.c,v 1.1.1.1 1999/05/18 15:33:43 dugsong Exp $
- *
- * libnet
- * arp.c - Build an ARP packet
- *
- * Copyright (c) 1998, 1999 Mike D. Schiffman <mike@infonexus.com>
- * route|daemon9 <route@infonexus.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- */
-
- #if (HAVE_CONFIG_H)
- #include "../../include/config.h"
- #endif
- #include "../libnet_test.h"
-
- int
- main(int argc, char *argv[])
- {
- int c;
- char errbuf[256];
- char *device = NULL;
- struct link_int *l;
-
- while ((c = getopt(argc, argv, "i:")) != EOF)
- {
- switch (c)
- {
- case 'i':
- device = optarg;
- break;
- default:
- exit(EXIT_FAILURE);
- }
- }
-
- if (!device)
- {
- fprintf(stderr, "Specify a device\n");
- exit(EXIT_FAILURE);
- }
-
- l = libnet_open_link_interface(device, errbuf);
- if (!l)
- {
- fprintf(stderr, "libnet_open_link_interface: %s\n", errbuf);
- exit(EXIT_FAILURE);
- }
- c = send_arp(l, device);
-
- return (c == -1 ? EXIT_FAILURE : EXIT_SUCCESS);
- }
-
-
- int
- send_arp(struct link_int *l, u_char *device)
- {
- int n;
- u_char *buf;
-
- if (libnet_init_packet(ARP_H + ETH_H, &buf) == -1)
- {
- perror("libnet_init_packet memory:");
- exit(EXIT_FAILURE);
- }
-
- /*
- * Ethernet header
- */
- libnet_build_ethernet(enet_dst, enet_src, ETHERTYPE_ARP, NULL, 0, buf);
-
- /*
- * ARP header
- */
- libnet_build_arp(ARPHRD_ETHER,
- ETHERTYPE_IP,
- 6,
- 4,
- ARPOP_REQUEST,
- enet_src,
- ip_src,
- enet_dst,
- ip_dst,
- NULL,
- 0,
- buf + ETH_H);
-
- n = libnet_write_link_layer(l, device, buf, ARP_H + ETH_H);
-
- printf("Wrote %d byte ARP packet through linktype %d\n", n, l->linktype);
-
- libnet_destroy_packet(&buf);
- return (n);
- }
-
- /* EOF */
-