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- /* $Id:$ */
- /*
- * Copyright (c) 2004-2005 Aaron Turner.
- * 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.
- * 3. Neither the names of the copyright owners nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``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 AUTHORS OR COPYRIGHT HOLDERS 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.
- */
-
- /*
- * Purpose: Modify packets in a pcap file based on rules provided by the
- * user to offload work from tcpreplay and provide a easier means of
- * reproducing traffic for testing purposes.
- */
- #include "config.h"
- #include "defines.h"
- #include "common.h"
- #include <ctype.h>
- #include <fcntl.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <sys/types.h>
- #include <unistd.h>
- #include "tcpbridge.h"
- #include "tcpbridge_opts.h"
- #include "portmap.h"
- #include "edit_packet.h"
- #include "mac.h"
- #include "rewrite_l2.h"
- #include "bridge.h"
- #include "send_packets.h"
- #ifdef DEBUG
- int debug;
- #endif
- #ifdef HAVE_TCPDUMP
- /* tcpdump handle */
- tcpdump_t tcpdump;
- #endif
- COUNTER bytes_sent, total_bytes, failed, pkts_sent, cache_packets;
- struct timeval begin, end;
- volatile int didsig;
- tcpbridge_opt_t options;
- /* local functions */
- void init(void);
- void post_args(int argc, char *argv[]);
- int
- main(int argc, char *argv[])
- {
- int optct;
- init();
- /* call autoopts to process arguments */
- optct = optionProcess(&tcpbridgeOptions, argc, argv);
- argc -= optct;
- argv += optct;
- post_args(argc, argv);
- /*
- #ifdef HAVE_TCPDUMP
- if (options.verbose) {
- tcpdump.filename = options.infile;
- tcpdump_open(&tcpdump);
- }
- #endif
- */
- /*
- if (options.unidir) {
- replay_live(options.listen1, options.send1);
- } else {
- */
- do_bridge(options.listen1, options.listen2);
- // }
- /* clean up after ourselves */
- libnet_destroy(options.send1);
- libnet_destroy(options.send2);
- pcap_close(options.listen1);
- pcap_close(options.listen2);
- #ifdef HAVE_TCPDUMP
- tcpdump_close(&tcpdump);
- #endif
- return 0;
- }
- void
- init(void)
- {
-
- bytes_sent = total_bytes = failed = pkts_sent = cache_packets = 0;
- memset(&options, 0, sizeof(options));
-
- options.snaplen = 65535;
- options.promisc = 1;
- options.to_ms = 1;
- total_bytes = 0;
- #ifdef HAVE_TCPDUMP
- /* clear out tcpdump struct */
- memset(&tcpdump, '\0', sizeof(tcpdump_t));
- #endif
-
-
- if (fcntl(STDERR_FILENO, F_SETFL, O_NONBLOCK) < 0)
- warnx("Unable to set STDERR to non-blocking: %s", strerror(errno));
-
- }
- void
- post_args(int argc, char *argv[])
- {
- char ebuf[LIBNET_ERRBUF_SIZE];
- #ifdef DEBUG
- if (HAVE_OPT(DBUG))
- debug = OPT_VALUE_DBUG;
- #else
- if (HAVE_OPT(DBUG))
- warn("not configured with --enable-debug. Debugging disabled.");
- #endif
-
- #ifdef HAVE_TCPDUMP
- if (HAVE_OPT(VERBOSE))
- options.verbose = 1;
-
- if (HAVE_OPT(DECODE))
- tcpdump.args = safe_strdup(OPT_ARG(DECODE));
-
- #endif
- /* open up interfaces */
- if ((options.send1 = libnet_init(LIBNET_LINK_ADV, options.intf1, ebuf)) == NULL)
- errx(1, "Unable to open interface %s for sending: %s", options.intf1, ebuf);
- if ((options.listen1 = pcap_open_live(options.intf1, options.snaplen,
- options.promisc, options.to_ms, ebuf)) == NULL)
- errx(1, "Unable to open interface %s for recieving: %s", options.intf1, ebuf);
- /* open interfaces bi-directionally ?? */
- if (!options.unidir) {
- if (strcmp(options.intf1, options.intf2) == 0)
- errx(1, "Whoa tiger! You don't want to use %s twice!", options.intf1);
- if ((options.send2 = libnet_init(LIBNET_LINK_ADV, options.intf2, ebuf)) == NULL)
- errx(1, "Unable to open interface %s for sending: %s", options.intf2, ebuf);
-
-
- if ((options.listen2 = pcap_open_live(options.intf2, options.snaplen,
- options.promisc, options.to_ms, ebuf)) == NULL)
- errx(1, "Unable to open interface %s for recieving: %s", options.intf2, ebuf);
- }
- }
- /*
- Local Variables:
- mode:c
- indent-tabs-mode:nil
- c-basic-offset:4
- End:
- */
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