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-rw-r--r--libnet/sample/stp.c227
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diff --git a/libnet/sample/stp.c b/libnet/sample/stp.c
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+++ b/libnet/sample/stp.c
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+/*
+ * $Id: stp.c,v 1.3 2004/01/21 19:01:29 mike Exp $
+ *
+ * libnet 1.1
+ * Build an STP frame
+ *
+ * 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"
+
+#define CONF 1
+#define TCN 2
+
+int
+main(int argc, char *argv[])
+{
+ int c, len, type;
+ libnet_t *l;
+ libnet_ptag_t t;
+ u_char *dst, *src;
+ u_char rootid[8], bridgeid[8];
+ char *device = NULL;
+ char errbuf[LIBNET_ERRBUF_SIZE];
+
+ printf("libnet 1.1 packet shaping: [STP]\n");
+
+ device = NULL;
+ src = dst = NULL;
+ type = CONF;
+ while ((c = getopt(argc, argv, "cd:i:s:t")) != EOF)
+ {
+ switch (c)
+ {
+ case 'c':
+ type = CONF;
+ break;
+ case 'd':
+ dst = libnet_hex_aton(optarg, &len);
+ break;
+ case 'i':
+ device = optarg;
+ break;
+ case 's':
+ src = libnet_hex_aton(optarg, &len);
+ break;
+ case 't':
+ type = TCN;
+ break;
+ default:
+ usage(argv[0]);
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ if (src == NULL || dst == NULL)
+ {
+ usage(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);
+ }
+
+ if (type == CONF)
+ {
+ rootid[0] = 0x80;
+ rootid[1] = 0x00;
+ rootid[2] = 0x00;
+ rootid[3] = 0x07;
+ rootid[4] = 0xec;
+ rootid[5] = 0xae;
+ rootid[6] = 0x30;
+ rootid[7] = 0x41;
+
+ bridgeid[0] = 0x80;
+ bridgeid[1] = 0x00;
+ bridgeid[2] = 0x00;
+ bridgeid[3] = 0x07;
+ bridgeid[4] = 0xec;
+ bridgeid[5] = 0xae;
+ bridgeid[6] = 0x30;
+ bridgeid[7] = 0x41;
+
+ t = libnet_build_stp_conf(
+ 0x0000, /* protocol id */
+ 0x00, /* protocol version */
+ 0x00, /* BPDU type */
+ 0x00, /* BPDU flags */
+ rootid, /* root id */
+ 0x00000001, /* root path cost */
+ bridgeid, /* bridge id */
+ 0x8002, /* port id */
+ 0x00, /* message age */
+ 0x0014, /* max age */
+ 0x0002, /* hello time */
+ 0x000f, /* forward delay */
+ NULL, /* payload */
+ 0, /* payload size */
+ l, /* libnet handle */
+ 0); /* libnet id */
+ if (t == -1)
+ {
+ fprintf(stderr, "Can't build STP conf header: %s\n",
+ libnet_geterror(l));
+ goto bad;
+ }
+ }
+ else
+ {
+ t = libnet_build_stp_tcn(
+ 0x0000, /* protocol id */
+ 0x00, /* protocol version */
+ 0x80, /* BPDU type */
+ NULL, /* payload */
+ 0, /* payload size */
+ l, /* libnet handle */
+ 0); /* libnet id */
+ if (t == -1)
+ {
+ fprintf(stderr, "Can't build STP tcn header: %s\n",
+ libnet_geterror(l));
+ goto bad;
+ }
+ }
+
+ t = libnet_build_802_2(
+ LIBNET_SAP_STP, /* DSAP */
+ LIBNET_SAP_STP, /* SSAP */
+ 0x03, /* control */
+ NULL, /* payload */
+ 0, /* payload size */
+ l, /* libnet handle */
+ 0); /* libnet id */
+ if (t == -1)
+ {
+ fprintf(stderr, "Can't build ethernet header: %s\n",
+ libnet_geterror(l));
+ goto bad;
+ }
+
+ t = libnet_build_802_3(
+ dst, /* ethernet destination */
+ src, /* ethernet source */
+ LIBNET_802_2_H + ((type == CONF) ? LIBNET_STP_CONF_H :
+ LIBNET_STP_TCN_H), /* frame size */
+ NULL, /* payload */
+ 0, /* payload size */
+ l, /* libnet handle */
+ 0); /* libnet id */
+ if (t == -1)
+ {
+ fprintf(stderr, "Can't build ethernet 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 STP 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);
+}
+
+
+void
+usage(char *name)
+{
+ fprintf(stderr, "usage %s -d dst -s src -t -c [-i interface]\n",
+ name);
+}
+
+/* EOF */