Annotation of embedaddon/libnet/sample/ospf_hello.c, revision 1.1.1.2
1.1 misho 1: /*
1.1.1.2 ! misho 2: * $Id: ospf_hello.c,v 1.3 2004/11/09 07:05:07 mike Exp $
1.1 misho 3: *
4: * libnet 1.1
5: * Build an OSPF Hello packet
6: *
7: * Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
8: * All rights reserved.
9: *
10: * Copyright (c) 1999, 2000 Andrew Reiter <areiter@bindview.com>
11: * All rights reserved.
12: *
13: * Redistribution and use in source and binary forms, with or without
14: * modification, are permitted provided that the following conditions
15: * are met:
16: * 1. Redistributions of source code must retain the above copyright
17: * notice, this list of conditions and the following disclaimer.
18: * 2. Redistributions in binary form must reproduce the above copyright
19: * notice, this list of conditions and the following disclaimer in the
20: * documentation and/or other materials provided with the distribution.
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32: * SUCH DAMAGE.
33: *
34: */
35:
36: #if (HAVE_CONFIG_H)
37: #include "../include/config.h"
38: #endif
39: #include "./libnet_test.h"
40:
41: int
42: main(int argc, char **argv)
43: {
44: int c;
45: libnet_t *l;
46: libnet_ptag_t t;
1.1.1.2 ! misho 47: u_long src, dst;
1.1 misho 48: char errbuf[LIBNET_ERRBUF_SIZE];
1.1.1.2 ! misho 49: char *to, *from;
1.1 misho 50: u_char auth[8] = {0,0,0,0,0,0,0,0};
51:
52:
53: printf("libnet 1.1 OSPF Hello packet shaping[raw]\n");
54:
1.1.1.2 ! misho 55: if (argc != 3)
1.1 misho 56: {
57: usage(argv[0]);
58: }
59:
60: from = argv[1];
61: to = argv[2];
62:
63: /*
64: * Initialize the library. Root priviledges are required.
65: */
66: l = libnet_init(
67: LIBNET_RAW4, /* injection type */
68: NULL, /* network interface */
69: errbuf); /* errbuf */
70:
71: if (l == NULL)
72: {
73: fprintf(stderr, "libnet_init() failed: %s", errbuf);
74: exit(EXIT_FAILURE);
75: }
76:
77: /* Too lazy to check for error */
78: src = libnet_name2addr4(l, from, LIBNET_DONT_RESOLVE);
79: dst = libnet_name2addr4(l, to, LIBNET_DONT_RESOLVE);
80:
81: t = libnet_build_ospfv2_hello(
82: 0xffffffff, /* netmask */
83: 2, /* interval */
84: 0x00, /* options */
85: 0x00, /* priority */
86: 30, /* dead int */
87: src, /* router */
88: src, /* router */
89: NULL, /* payload */
90: 0, /* payload size */
91: l, /* libnet handle */
92: 0); /* libnet id */
93: if (t == -1)
94: {
95: fprintf(stderr, "Can't build OSPF HELLO header: %s\n", libnet_geterror(l));
96: goto bad;
97: }
98:
99: /* authentication data */
100: t = libnet_build_data(
101: auth, /* auth data */
102: LIBNET_OSPF_AUTH_H, /* payload size */
103: l, /* libnet handle */
104: 0); /* libnet id */
105: if (t == -1)
106: {
107: fprintf(stderr, "Can't build OSPF auth header: %s\n", libnet_geterror(l));
108: goto bad;
109: }
110:
111: t = libnet_build_ospfv2(
112: LIBNET_OSPF_HELLO_H + LIBNET_OSPF_AUTH_H, /* OSPF packet length */
113: LIBNET_OSPF_HELLO, /* OSPF packet type */
114: htonl(0xd000000d), /* router id */
115: htonl(0xc0ffee00), /* area id */
116: 0, /* checksum */
117: LIBNET_OSPF_AUTH_NULL, /* auth type */
118: NULL, /* payload */
119: 0, /* payload size */
120: l, /* libnet handle */
121: 0); /* libnet id */
122:
123: if (t == -1)
124: {
125: fprintf(stderr, "Can't build OSPF header: %s\n", libnet_geterror(l));
126: goto bad;
127: }
128:
129: t = libnet_build_ipv4(
130: LIBNET_IPV4_H + LIBNET_OSPF_H +
131: LIBNET_OSPF_HELLO_H + LIBNET_OSPF_AUTH_H, /* packet total legnth */
132: 0, /* TOS */
133: 101, /* IP iD */
134: IP_DF, /* IP frag */
135: 254, /* TTL */
136: IPPROTO_OSPF, /* protocol */
137: 0, /* checksum */
138: src, /* source IP */
139: dst, /* destination IP */
140: NULL, /* payload */
141: 0, /* payload size */
142: l, /* libnet handle */
143: 0); /* libnet id */
144: if (t == -1)
145: {
146: fprintf(stderr, "Can't build IP header: %s\n", libnet_geterror(l));
147: goto bad;
148: }
149:
150: /*
151: * Write it to the wire.
152: */
153: c = libnet_write(l);
154: if (c == -1)
155: {
156: fprintf(stderr, "Write error: %s\n", libnet_geterror(l));
157: goto bad;
158: }
159: else
160: {
161: fprintf(stderr, "Wrote %d byte OSPF packet; check the wire.\n", c);
162: }
163: libnet_destroy(l);
164: return (EXIT_SUCCESS);
165: bad:
166: libnet_destroy(l);
167: return (EXIT_FAILURE);
168: }
169:
170:
171: void
172: usage(char *pname)
173: {
174: printf("Usage: %s <source ip> <dest. ip> <neighbor>\n", pname);
175: exit(EXIT_SUCCESS);
176: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to ospf_hello.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / libnet / sample