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/* $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 lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/tcpdump/print-cnfp.c,v 1.16 2003-11-16 09:36:16 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)*/
};
void
cnfp_print(const u_char *cp, const u_char *bp)
{
register const struct nfhdr *nh;
register const struct nfrec *nr;
register const struct ip *ip;
struct protoent *pent;
int nrecs, ver;
time_t t;
ip = (const struct ip *)bp;
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;
t = EXTRACT_32BITS(&nh->utc_sec);
/* (p = ctime(&t))[24] = '\0'; */
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);
}
}
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