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/*
* $Id: icmp_echo.c,v 1.10 1999/10/27 01:37:27 route Exp $
*
* libnet
* icmp_echo.c - ICMP_ECHO Packet assembly tester
*
* Copyright (c) 1998, 1999 Mike D. Schiffman <mike@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 sock, n, c, p_num;
struct libnet_arena arena, *arena_p;
u_char *packets[10];
u_long src_ip, dst_ip;
printf("ICMP_ECHO / Arena allocator test\n");
src_ip = 0;
dst_ip = 0;
while((c = getopt(argc, argv, "d:s:")) != EOF)
{
switch (c)
{
case 'd':
if (!(dst_ip = libnet_name_resolve(optarg, 1)))
{
fprintf(stderr, "Bad destination IP address: %s\n", optarg);
exit(1);
}
break;
case 's':
if (!(src_ip = libnet_name_resolve(optarg, 1)))
{
fprintf(stderr, "Bad source IP address: %s\n", optarg);
exit(1);
}
break;
}
}
if (!src_ip || !dst_ip)
{
usage(argv[0]);
exit(EXIT_FAILURE);
}
arena_p = &arena;
p_num = 10;
if (libnet_init_packet_arena(&arena_p, p_num, LIBNET_ICMP_ECHO_H +
LIBNET_IP_H) == -1)
{
fprintf(stderr, "libnet_init_packet_arena failed\n");
exit(EXIT_FAILURE);
}
else
{
printf("Allocated an arena of %ld bytes..\n",
LIBNET_GET_ARENA_SIZE(arena));
}
/*
* Open our raw IP socket and set IP_HDRINCL.
*/
sock = libnet_open_raw_sock(IPPROTO_RAW);
if (sock == -1)
{
perror("No socket");
exit(EXIT_FAILURE);
}
for (n = 0; n < p_num; n++)
{
printf("%ld bytes remaining in arena\n",
LIBNET_GET_ARENA_REMAINING_BYTES(arena));
packets[n] = libnet_next_packet_from_arena(&arena_p,
LIBNET_ICMP_ECHO_H + LIBNET_IP_H);
if (!packets[n])
{
fprintf(stderr, "Arena is empty\n");
continue;
}
/*
* Build the IP header (shown exploded for commenting).
*/
libnet_build_ip(LIBNET_ICMP_ECHO_H, /* Size of the payload */
IPTOS_LOWDELAY | IPTOS_THROUGHPUT, /* IP tos */
242, /* IP ID */
0, /* Frag stuff */
48, /* TTL */
IPPROTO_ICMP, /* Transport protocol */
src_ip, /* Source IP */
dst_ip, /* Destination IP */
NULL, /* Pointer to payload (none) */
0,
packets[n]); /* Packet header memory */
/*
* Build the ICMP header.
*/
libnet_build_icmp_echo(ICMP_ECHO, /* type */
0, /* code */
242, /* id */
1, /* seq */
NULL, /* pointer to payload */
0, /* size of payload */
packets[n] + LIBNET_IP_H); /* packet header memory */
if (libnet_do_checksum(packets[n], IPPROTO_ICMP, LIBNET_ICMP_ECHO_H)
== -1)
{
fprintf(stderr, "Can't do checksum!\n");
}
/*
* Write the packet to the network.
*/
c = libnet_write_ip(sock, packets[n], LIBNET_ICMP_ECHO_H + LIBNET_IP_H);
if (c < LIBNET_ICMP_ECHO_H + LIBNET_IP_H)
{
fprintf(stderr, "write_ip\n");
}
printf("Completed %d of %d, wrote %d bytes\n", n + 1, p_num, c);
}
libnet_destroy_packet_arena(&arena_p);
/* Blah. */
return (c == -1 ? EXIT_FAILURE : EXIT_SUCCESS);
}
void
usage(u_char *name)
{
fprintf(stderr, "usage: %s -s source_ip -d destination_ip\n ", name);
}
/* EOF */
|
