diff options
Diffstat (limited to 'libnet/sample/ieee.c')
| -rw-r--r-- | libnet/sample/ieee.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/libnet/sample/ieee.c b/libnet/sample/ieee.c new file mode 100644 index 0000000..0037b01 --- /dev/null +++ b/libnet/sample/ieee.c @@ -0,0 +1,177 @@ +/* + * $Id: ieee.c,v 1.2 2004/01/03 20:31:01 mike Exp $ + * + * libnet 1.1 + * Build an ieee 802.1q/ARP packet + * + * 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, len, do_802_2; + u_long i; + libnet_t *l; + libnet_ptag_t t; + u_char *dst, *src, oui[3]; + char *device = NULL; + char errbuf[LIBNET_ERRBUF_SIZE]; + + printf("libnet 1.1 packet shaping: ieee[802.1q / 802.2 / ARP]\n"); + + do_802_2 = 0; + device = NULL; + src = dst = NULL; + while ((c = getopt(argc, argv, "8d:i:s:")) != EOF) + { + switch (c) + { + case '8': + do_802_2 = 1; + break; + case 'd': + dst = libnet_hex_aton(optarg, &len); + break; + case 'i': + device = optarg; + break; + case 's': + src = libnet_hex_aton(optarg, &len); + break; + } + } + + if (src == NULL || dst == NULL) + { + fprintf(stderr, "usage %s -d dst -s src [-8 ] [-i interface]\n", + argv[0]); + exit(EXIT_FAILURE); + } + + /* + * Initialize the library. Root priviledges are required. + */ + l = libnet_init( + LIBNET_LINK, /* injection type */ + device, /* network interface */ + errbuf); /* errbuf */ + + if (l == NULL) + { + fprintf(stderr, "libnet_init() failed: %s", errbuf); + exit(EXIT_FAILURE); + } + + i = libnet_get_ipaddr4(l); + + t = libnet_build_arp( + ARPHRD_ETHER, /* hardware addr */ + ETHERTYPE_IP, /* protocol addr */ + 6, /* hardware addr size */ + 4, /* protocol addr size */ + ARPOP_REPLY, /* operation type */ + src, /* sender hardware addr */ + (u_char *)&i, /* sender protocol addr */ + dst, /* target hardware addr */ + (u_char *)&i, /* target protocol addr */ + NULL, /* payload */ + 0, /* payload size */ + l, /* libnet handle */ + 0); /* libnet id */ + if (t == -1) + { + fprintf(stderr, "Can't build ARP header: %s\n", libnet_geterror(l)); + goto bad; + } + + if (do_802_2) + { + memset(&oui, 0, 3); + t = libnet_build_802_2snap( + 0xaa, /* SNAP DSAP */ + 0xaa, /* SNAP SSAP */ + 0, /* control */ + oui, /* oui */ + ETHERTYPE_ARP, /* ARP header follows */ + NULL, /* payload */ + 0, /* payload size */ + l, /* libnet handle */ + 0); /* libnet id */ + if (t == -1) + { + fprintf(stderr, "Can't build 802.2 header: %s\n", libnet_geterror(l)); + goto bad; + } + } + t = libnet_build_802_1q( + dst, /* dest mac */ + src, /* source mac */ + ETHERTYPE_VLAN, /* TPI */ + 0x006, /* priority (0 - 7) */ + 0x001, /* CFI flag */ + 0x100, /* vid (0 - 4095) */ + do_802_2 ? LIBNET_802_2SNAP_H + LIBNET_ARP_ETH_IP_H : 0x0806, + NULL, /* payload */ + 0, /* payload size */ + l, /* libnet handle */ + 0); /* libnet id */ + if (t == -1) + { + fprintf(stderr, "Can't build 802.1q header: %s\n", libnet_geterror(l)); + goto bad; + } + /* + * Write it to the wire. + */ + c = libnet_write(l); + + if (c == -1) + { + fprintf(stderr, "Write error: %s\n", libnet_geterror(l)); + goto bad; + } + else + { + fprintf(stderr, "Wrote %d byte 802.1q packet; check the wire.\n", c); + } + free(dst); + free(src); + libnet_destroy(l); + return (EXIT_SUCCESS); +bad: + free(dst); + free(src); + libnet_destroy(l); + return (EXIT_FAILURE); +} + +/* EOF */ |