/*	$OpenBSD: print-cnfp.c,v 1.2 1998/06/25 20:26:59 mickey Exp $	*//* * Copyright (c) 1998 Michael Shalayeff * 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. All advertising materials mentioning features or use of this software *    must display the following acknowledgement: *	This product includes software developed by Michael Shalayeff. * 4. The name of the author may not be used to endorse or promote products *    derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. *//* Cisco NetFlow protocol */#ifndef lintstatic const char rcsid[] _U_ =    "@(#) $Header: /tcpdump/master/tcpdump/print-cnfp.c,v 1.17 2005-04-20 20:53:18 guy Exp $";#endif#ifdef HAVE_CONFIG_H#include "config.h"#endif#include <tcpdump-stdinc.h>#include <stdio.h>#include <string.h>#include "interface.h"#include "addrtoname.h"#include "extract.h"#include "tcp.h"#include "ipproto.h"struct nfhdr {	u_int32_t	ver_cnt;	/* version [15], and # of records */	u_int32_t	msys_uptime;	u_int32_t	utc_sec;	u_int32_t	utc_nsec;	u_int32_t	sequence;	/* v5 flow sequence number */	u_int32_t	reserved;	/* v5 only */};struct nfrec {	struct in_addr	src_ina;	struct in_addr	dst_ina;	struct in_addr	nhop_ina;	u_int32_t	ifaces;		/* src,dst ifaces */	u_int32_t	packets;	u_int32_t	octets;	u_int32_t	start_time;	/* sys_uptime value */	u_int32_t	last_time;	/* sys_uptime value */	u_int32_t	ports;		/* src,dst ports */	u_int32_t	proto_tos;	/* proto, tos, pad, flags(v5) */	u_int32_t	asses;		/* v1: flags; v5: src,dst AS */	u_int32_t	masks;		/* src,dst addr prefix; v6: encaps */	struct in_addr	peer_nexthop;	/* v6: IP address of the nexthop within the peer (FIB)*/};voidcnfp_print(const u_char *cp, const u_char *bp _U_){	register const struct nfhdr *nh;	register const struct nfrec *nr;	struct protoent *pent;	int nrecs, ver;#if 0	time_t t;#endif	nh = (const struct nfhdr *)cp;	if ((const u_char *)(nh + 1) > snapend)		return;	nrecs = EXTRACT_32BITS(&nh->ver_cnt) & 0xffff;	ver = (EXTRACT_32BITS(&nh->ver_cnt) & 0xffff0000) >> 16;#if 0	/*	 * This is seconds since the UN*X epoch, and is followed by	 * nanoseconds.  XXX - format it, rather than just dumping the	 * raw seconds-since-the-Epoch.	 */	t = EXTRACT_32BITS(&nh->utc_sec);#endif	printf("NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,	       EXTRACT_32BITS(&nh->msys_uptime)/1000,	       EXTRACT_32BITS(&nh->msys_uptime)%1000,	       EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec));	if (ver == 5 || ver == 6) {		printf("#%u, ", EXTRACT_32BITS(&nh->sequence));		nr = (const struct nfrec *)&nh[1];		snaplen -= 24;	} else {		nr = (const struct nfrec *)&nh->sequence;		snaplen -= 16;	}	printf("%2u recs", nrecs);	for (; nrecs-- && (const u_char *)(nr + 1) <= snapend; nr++) {		char buf[20];		char asbuf[20];		printf("\n  started %u.%03u, last %u.%03u",		       EXTRACT_32BITS(&nr->start_time)/1000,		       EXTRACT_32BITS(&nr->start_time)%1000,		       EXTRACT_32BITS(&nr->last_time)/1000,		       EXTRACT_32BITS(&nr->last_time)%1000);		asbuf[0] = buf[0] = '\0';		if (ver == 5 || ver == 6) {			snprintf(buf, sizeof(buf), "/%u",				 (EXTRACT_32BITS(&nr->masks) >> 24) & 0xff);			snprintf(asbuf, sizeof(asbuf), ":%u",				 (EXTRACT_32BITS(&nr->asses) >> 16) & 0xffff);		}		printf("\n    %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf,			EXTRACT_32BITS(&nr->ports) >> 16);		if (ver == 5 || ver ==6) {			snprintf(buf, sizeof(buf), "/%d",				 (EXTRACT_32BITS(&nr->masks) >> 16) & 0xff);			snprintf(asbuf, sizeof(asbuf), ":%u",				 EXTRACT_32BITS(&nr->asses) & 0xffff);		}		printf("> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf,			EXTRACT_32BITS(&nr->ports) & 0xffff);		printf(">> %s\n    ", intoa(nr->nhop_ina.s_addr));		pent = getprotobynumber((EXTRACT_32BITS(&nr->proto_tos) >> 8) & 0xff);		if (!pent || nflag)			printf("%u ",			       (EXTRACT_32BITS(&nr->proto_tos) >> 8) & 0xff);		else			printf("%s ", pent->p_name);		/* tcp flags for tcp only */		if (pent && pent->p_proto == IPPROTO_TCP) {			int flags;			if (ver == 1)				flags = (EXTRACT_32BITS(&nr->asses) >> 24) & 0xff;			else				flags = (EXTRACT_32BITS(&nr->proto_tos) >> 16) & 0xff;			if (flags & TH_FIN)	putchar('F');			if (flags & TH_SYN)	putchar('S');			if (flags & TH_RST)	putchar('R');			if (flags & TH_PUSH)	putchar('P');			if (flags & TH_ACK)	putchar('A');			if (flags & TH_URG)	putchar('U');			if (flags)				putchar(' ');		}		buf[0]='\0';		if (ver == 6) {			snprintf(buf, sizeof(buf), "(%u<>%u encaps)",				 (EXTRACT_32BITS(&nr->masks) >> 8) & 0xff,				 (EXTRACT_32BITS(&nr->masks)) & 0xff);		}		printf("tos %u, %u (%u octets) %s",		       EXTRACT_32BITS(&nr->proto_tos) & 0xff,		       EXTRACT_32BITS(&nr->packets),		       EXTRACT_32BITS(&nr->octets), buf);	}}