Annotation of embedaddon/libnet/sample/icmp_timestamp.c, revision 1.1
1.1 ! misho 1: /*
! 2: * $Id: icmp_timestamp.c,v 1.2 2004/01/03 20:31:01 mike Exp $
! 3: *
! 4: * libnet 1.1
! 5: * Build an ICMP_TSTAMP packet
! 6: *
! 7: * Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
! 8: * All rights reserved.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 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.
! 18: *
! 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
! 29: * SUCH DAMAGE.
! 30: *
! 31: */
! 32:
! 33: #if (HAVE_CONFIG_H)
! 34: #include "../include/config.h"
! 35: #endif
! 36: #include "./libnet_test.h"
! 37:
! 38: int
! 39: main(int argc, char **argv)
! 40: {
! 41: int c;
! 42: libnet_t *l;
! 43: libnet_ptag_t t;
! 44: u_long src_ip, dst_ip;
! 45: char errbuf[LIBNET_ERRBUF_SIZE];
! 46:
! 47: printf("libnet 1.1 packet shaping: ICMP timestamp[raw]\n");
! 48:
! 49: /*
! 50: * Initialize the library. Root priviledges are required.
! 51: */
! 52: l = libnet_init(
! 53: LIBNET_RAW4, /* injection type */
! 54: NULL, /* network interface */
! 55: errbuf); /* errbuf */
! 56:
! 57: if (l == NULL)
! 58: {
! 59: fprintf(stderr, "libnet_init() failed: %s", errbuf);
! 60: exit(EXIT_FAILURE);
! 61: }
! 62:
! 63: src_ip = 0;
! 64: dst_ip = 0;
! 65: while((c = getopt(argc, argv, "d:s:")) != EOF)
! 66: {
! 67: switch (c)
! 68: {
! 69: case 'd':
! 70: if ((dst_ip = libnet_name2addr4(l, optarg, LIBNET_RESOLVE)) == -1)
! 71: {
! 72: fprintf(stderr, "Bad destination IP address: %s\n", optarg);
! 73: exit(1);
! 74: }
! 75: break;
! 76: case 's':
! 77: if ((src_ip = libnet_name2addr4(l, optarg, LIBNET_RESOLVE)) == -1)
! 78: {
! 79: fprintf(stderr, "Bad source IP address: %s\n", optarg);
! 80: exit(1);
! 81: }
! 82: break;
! 83: }
! 84: }
! 85: if (!src_ip || !dst_ip)
! 86: {
! 87: usage(argv[0]);
! 88: exit(EXIT_FAILURE);
! 89: }
! 90:
! 91: t = libnet_build_icmpv4_timestamp(
! 92: ICMP_TSTAMP, /* type */
! 93: 0, /* code */
! 94: 0, /* checksum */
! 95: 242, /* id */
! 96: 424, /* sequence number */
! 97: 1000, /* otime */
! 98: 2000, /* rtime */
! 99: 3000, /* ttime */
! 100: NULL, /* payload */
! 101: 0, /* payload size */
! 102: l, /* libnet handle */
! 103: 0);
! 104: if (t == -1)
! 105: {
! 106: fprintf(stderr, "Can't build ICMP header: %s\n", libnet_geterror(l));
! 107: goto bad;
! 108: }
! 109:
! 110: t = libnet_build_ipv4(
! 111: LIBNET_IPV4_H + LIBNET_ICMPV4_TS_H, /* length */
! 112: 0, /* TOS */
! 113: 242, /* IP ID */
! 114: 0, /* IP Frag */
! 115: 64, /* TTL */
! 116: IPPROTO_ICMP, /* protocol */
! 117: 0, /* checksum */
! 118: src_ip, /* source IP */
! 119: dst_ip, /* destination IP */
! 120: NULL, /* payload */
! 121: 0, /* payload size */
! 122: l, /* libnet handle */
! 123: 0);
! 124: if (t == -1)
! 125: {
! 126: fprintf(stderr, "Can't build IP header: %s\n", libnet_geterror(l));
! 127: goto bad;
! 128: }
! 129:
! 130: /*
! 131: * Write it to the wire.
! 132: */
! 133: c = libnet_write(l);
! 134: if (c == -1)
! 135: {
! 136: fprintf(stderr, "Write error: %s\n", libnet_geterror(l));
! 137: goto bad;
! 138: }
! 139: else
! 140: {
! 141: fprintf(stderr, "Wrote %d byte ICMP packet; check the wire.\n", c);
! 142: }
! 143: libnet_destroy(l);
! 144: return (EXIT_SUCCESS);
! 145: bad:
! 146: libnet_destroy(l);
! 147: return (EXIT_FAILURE);
! 148: }
! 149:
! 150:
! 151: void
! 152: usage(char *name)
! 153: {
! 154: fprintf(stderr, "usage: %s -s source_ip -d destination_ip\n ", name);
! 155: }
! 156:
! 157: /* EOF */
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