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/* -*- Mode: c; tab-width: 4; indent-tabs-mode: 1; c-basic-offset: 4; -*- */
/* vim:set ts=4 sw=4 ai nobackup nocindent sm: */
/*
* tcptraceroute -- A traceroute implementation using TCP packets
* Copyright (c) 2001-2006 Michael C. Toren <mct@toren.net>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License, version 2, as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* A copy of the GNU GPL is available as /usr/doc/copyright/GPL on Debian
* systems, or on the World Wide Web at http://www.gnu.org/copyleft/gpl.html
* You can also obtain it by writing to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
extern pcap_t *pcap;
extern int pcap_fd;
/*
* How many bytes should we examine on every packet that comes off the
* wire? This doesn't include the link layer which is accounted for
* later. We're looking only for ICMP and TCP packets, so this should
* work. For ICMP, we also examine the quoted IP header, which is why
* there's a *2 there. The +32 is just to be safe.
*/
#define SNAPLEN (LIBNET_IPV4_H * 2 + \
(LIBNET_TCP_H > LIBNET_ICMPV4_H ? LIBNET_TCP_H : LIBNET_ICMPV4_H) + 32)
void initcapture(void);
int capture(proberecord *);
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