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/*
* $Id: udp2.c,v 1.6 2004/03/01 20:26:12 mike Exp $
*
* libnet 1.1
* Build a UDP packet using port list chains
*
* Copyright (c) 1998 - 2004 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 c, build_ip;
struct timeval r;
struct timeval s;
struct timeval e;
libnet_t *l;
libnet_ptag_t udp;
char *payload;
libnet_ptag_t t;
struct libnet_stats ls;
uint16_t payload_s;
uint32_t src_ip, dst_ip;
uint16_t bport, eport, cport;
libnet_plist_t plist, *plist_p;
char errbuf[LIBNET_ERRBUF_SIZE];
printf("libnet 1.1.2 packet shaping: UDP2[link]\n");
l = libnet_init(
LIBNET_LINK, /* injection type */
NULL, /* network interface */
errbuf); /* errbuf */
if (l == NULL)
{
fprintf(stderr, "libnet_init() failed: %s", errbuf);
exit(EXIT_FAILURE);
}
src_ip = 0;
dst_ip = 0;
payload = NULL;
payload_s = 0;
plist_p = NULL;
while ((c = getopt(argc, argv, "d:s:p:P:")) != EOF)
{
switch (c)
{
case 'd':
if ((dst_ip = libnet_name2addr4(l, optarg,
LIBNET_RESOLVE)) == -1)
{
fprintf(stderr, "Bad destination IP address: %s\n", optarg);
exit(1);
}
break;
case 's':
if ((src_ip = libnet_name2addr4(l, optarg,
LIBNET_RESOLVE)) == -1)
{
fprintf(stderr, "Bad source IP address: %s\n", optarg);
exit(1);
}
break;
case 'P':
plist_p = &plist;
if (libnet_plist_chain_new(l, &plist_p, optarg) == -1)
{
fprintf(stderr, "Bad token in port list: %s\n",
libnet_geterror(l));
exit(1);
}
break;
case 'p':
payload = optarg;
payload_s = strlen(payload);
break;
default:
usage(argv[0]);
exit(EXIT_FAILURE);
}
}
if (!src_ip || !dst_ip || !plist_p)
{
usage(argv[0]);
exit(EXIT_FAILURE);
}
udp = 0;
#if !(__WIN32__)
gettimeofday(&s, NULL);
#else
/* This obviously is not as good - but it compiles now. */
s.tv_sec = time(NULL);
s.tv_usec = 0;
#endif
build_ip = 1;
while (libnet_plist_chain_next_pair(plist_p, &bport, &eport))
{
while (!(bport > eport) && bport != 0)
{
cport = bport++;
udp = libnet_build_udp(
1025, /* source port */
cport, /* destination port */
LIBNET_UDP_H + payload_s, /* packet size */
0, /* checksum */
(uint8_t *)payload, /* payload */
payload_s, /* payload size */
l, /* libnet handle */
udp); /* libnet id */
if (udp == -1)
{
fprintf(stderr, "Can't build UDP header (at port %d): %s\n",
cport, libnet_geterror(l));
goto bad;
}
if (build_ip)
{
build_ip = 0;
t = libnet_build_ipv4(
LIBNET_IPV4_H + LIBNET_UDP_H + payload_s, /* length */
0, /* TOS */
242, /* IP ID */
0, /* IP Frag */
64, /* TTL */
IPPROTO_UDP, /* protocol */
0, /* checksum */
src_ip, /* source IP */
dst_ip, /* destination IP */
NULL, /* payload */
0, /* payload size */
l, /* libnet handle */
0);
if (t == -1)
{
fprintf(stderr, "Can't build IP header: %s\n", libnet_geterror(l));
goto bad;
}
t = libnet_build_ethernet(
enet_dst, /* ethernet dest */
enet_src, /* ethernet source */
ETHERTYPE_IP, /* protocol type */
NULL, /* payload */
0, /* payload size */
l, /* libnet handle */
0);
if (t == -1)
{
fprintf(stderr, "Can't build ethernet header: %s\n",
libnet_geterror(l));
goto bad;
}
}
c = libnet_write(l);
if (c == -1)
{
fprintf(stderr, "write error: %s\n", libnet_geterror(l));
}
else
{
fprintf(stderr, "wrote %d byte UDP packet to port %d\r", c,
cport);
}
}
fprintf(stderr, "\n");
}
#if !(__WIN32__)
gettimeofday(&e, NULL);
#else
/* This obviously is not as good - but it compiles now. */
s.tv_sec = time(NULL);
s.tv_usec = 0;
#endif
libnet_timersub(&e, &s, &r);
fprintf(stderr, "Total time spent in loop: %d.%d\n", (int)r.tv_sec,
(int)r.tv_usec);
libnet_stats(l, &ls);
fprintf(stderr, "Packets sent: %lld\n"
"Packet errors: %lld\n"
"Bytes written: %lld\n",
(long long)ls.packets_sent, (long long)ls.packet_errors,
(long long)ls.bytes_written);
libnet_destroy(l);
return (EXIT_SUCCESS);
bad:
libnet_destroy(l);
return (EXIT_FAILURE);
}
void
usage(char *name)
{
fprintf(stderr, "usage: %s -s s_ip -d d_ip -P port list [-p payload]\n", name);
}
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