summaryrefslogtreecommitdiff
path: root/sample/ospf_hello.c
diff options
context:
space:
mode:
Diffstat (limited to 'sample/ospf_hello.c')
-rw-r--r--sample/ospf_hello.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/sample/ospf_hello.c b/sample/ospf_hello.c
new file mode 100644
index 0000000..3e910e1
--- /dev/null
+++ b/sample/ospf_hello.c
@@ -0,0 +1,176 @@
+/*
+ * $Id: ospf_hello.c,v 1.3 2004/11/09 07:05:07 mike Exp $
+ *
+ * libnet 1.1
+ * Build an OSPF Hello 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;
+ char errbuf[LIBNET_ERRBUF_SIZE];
+ char *to, *from;
+ u_char auth[8] = {0,0,0,0,0,0,0,0};
+
+
+ printf("libnet 1.1 OSPF Hello 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_hello(
+ 0xffffffff, /* netmask */
+ 2, /* interval */
+ 0x00, /* options */
+ 0x00, /* priority */
+ 30, /* dead int */
+ src, /* router */
+ src, /* router */
+ NULL, /* payload */
+ 0, /* payload size */
+ l, /* libnet handle */
+ 0); /* libnet id */
+ if (t == -1)
+ {
+ fprintf(stderr, "Can't build OSPF HELLO 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_HELLO_H + LIBNET_OSPF_AUTH_H, /* OSPF packet length */
+ LIBNET_OSPF_HELLO, /* 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_HELLO_H + LIBNET_OSPF_AUTH_H, /* packet total legnth */
+ 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> <neighbor>\n", pname);
+ exit(EXIT_SUCCESS);
+}