diff options
Diffstat (limited to 'libnet/sample/ospf_lsa.c')
| -rw-r--r-- | libnet/sample/ospf_lsa.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/libnet/sample/ospf_lsa.c b/libnet/sample/ospf_lsa.c new file mode 100644 index 0000000..aa08283 --- /dev/null +++ b/libnet/sample/ospf_lsa.c @@ -0,0 +1,190 @@ +/* + * $Id: ospf_lsa.c,v 1.2 2004/01/03 20:31:01 mike Exp $ + * + * libnet 1.1 + * Build an OSPF LSA packet + * + * Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com> + * All rights reserved. + * + * Copyright (c) 1999, 2000 Andrew Reiter <areiter@bindview.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; + libnet_t *l; + libnet_ptag_t t; + u_long src, dst; + u_char auth[8] = {0,0,0,0,0,0,0,0}; + char *from, *to, errbuf[LIBNET_ERRBUF_SIZE]; + + printf("libnet 1.1 OSPF LSA packet shaping[raw]\n"); + + if (argc != 3) + { + usage(argv[0]); + } + + from = argv[1]; + to = argv[2]; + + /* + * Initialize the library. Root priviledges are required. + */ + l = libnet_init( + LIBNET_RAW4, /* injection type */ + NULL, /* network interface */ + errbuf); /* errbuf */ + + if (l == NULL) + { + fprintf(stderr, "libnet_init() failed: %s", errbuf); + exit(EXIT_FAILURE); + } + + /* Too lazy to check for error */ + src = libnet_name2addr4(l, from, LIBNET_DONT_RESOLVE); + dst = libnet_name2addr4(l, to, LIBNET_DONT_RESOLVE); + + t = libnet_build_ospfv2_lsa_net( + 0xffffff00, /* netmask */ + 0xc0ffee00, /* router id */ + NULL, /* payload */ + 0, /* payload size */ + l, /* libnet handle */ + 0); /* libnet id */ + if (t == -1) + { + fprintf(stderr, "Can't build LSA net header: %s\n", libnet_geterror(l)); + goto bad; + } + + t = libnet_build_ospfv2_lsa( + 40, /* packet age */ + 0, /* options */ + LIBNET_LS_TYPE_NET, /* type */ + htonl(0xc0ffee00), /* LS id */ + src, /* ad router */ + 0x11111111, /* seq */ + 0xffff, /* checksum */ + LIBNET_OSPF_LS_NET_H + LIBNET_OSPF_LSA_H, /* packet length */ + NULL, /* payload */ + 0, /* payload size */ + l, /* libnet handle */ + 0); /* libnet id */ + if (t == -1) + { + fprintf(stderr, "Can't build LSA header: %s\n", libnet_geterror(l)); + goto bad; + } + + /* authentication data */ + t = libnet_build_data( + auth, /* auth data */ + LIBNET_OSPF_AUTH_H, /* payload size */ + l, /* libnet handle */ + 0); /* libnet id */ + if (t == -1) + { + fprintf(stderr, "Can't build OSPF AUTH header: %s\n", libnet_geterror(l)); + goto bad; + } + + t = libnet_build_ospfv2( + LIBNET_OSPF_LSA_H + LIBNET_OSPF_AUTH_H + + LIBNET_OSPF_LS_NET_H, /* OSPF packet length */ + LIBNET_OSPF_LSA, /* OSPF packet type */ + htonl(0xd000000d), /* router id */ + htonl(0xc0ffee00), /* area id */ + 0, /* checksum */ + LIBNET_OSPF_AUTH_NULL, /* auth type */ + NULL, /* payload */ + 0, /* payload size */ + l, /* libnet handle */ + 0); /* libnet id */ + if (t == -1) + { + fprintf(stderr, "Can't build OSPF header: %s\n", libnet_geterror(l)); + goto bad; + } + + t = libnet_build_ipv4( + LIBNET_IPV4_H + LIBNET_OSPF_H + LIBNET_OSPF_AUTH_H + + LIBNET_OSPF_LSA_H + LIBNET_OSPF_LS_NET_H, /* packet total length */ + 0, /* TOS */ + 101, /* IP iD */ + IP_DF, /* IP frag */ + 254, /* TTL */ + IPPROTO_OSPF, /* protocol */ + 0, /* checksum */ + src, /* source IP */ + dst, /* destination IP */ + NULL, /* payload */ + 0, /* payload size */ + l, /* libnet handle */ + 0); /* libnet id */ + if (t == -1) + { + fprintf(stderr, "Can't build IP 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 OSPF packet; check the wire.\n", +c); + } + libnet_destroy(l); + return (EXIT_SUCCESS); +bad: + libnet_destroy(l); + return (EXIT_FAILURE); +} + + +void +usage(char *pname) +{ + printf("Usage: %s <source ip> <dest. ip>\n", pname); + exit(0); +} |