196 lines
6.0 KiB
C
196 lines
6.0 KiB
C
/* $NetBSD: print-cnfp.c,v 1.3 2002/02/18 09:37:06 itojun Exp $ */
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/* $OpenBSD: print-cnfp.c,v 1.2 1998/06/25 20:26:59 mickey Exp $ */
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/*
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* Copyright (c) 1998 Michael Shalayeff
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Michael Shalayeff.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Cisco NetFlow protocol */
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static const char rcsid[] =
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"@(#) Header: /tcpdump/master/tcpdump/print-cnfp.c,v 1.8 2001/09/17 21:57:58 fenner Exp";
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#else
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__RCSID("$NetBSD: print-cnfp.c,v 1.3 2002/02/18 09:37:06 itojun Exp $");
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#endif
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stdio.h>
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#include <string.h>
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#include "interface.h"
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#include "tcp.h"
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struct nfhdr {
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u_int32_t ver_cnt; /* version [15], and # of records */
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u_int32_t msys_uptime;
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u_int32_t utc_sec;
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u_int32_t utc_nsec;
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u_int32_t sequence; /* v5 flow sequence number */
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u_int32_t reserved; /* v5 only */
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};
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struct nfrec {
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struct in_addr src_ina;
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struct in_addr dst_ina;
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struct in_addr nhop_ina;
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u_int32_t ifaces; /* src,dst ifaces */
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u_int32_t packets;
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u_int32_t octets;
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u_int32_t start_time; /* sys_uptime value */
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u_int32_t last_time; /* sys_uptime value */
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u_int32_t ports; /* src,dst ports */
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u_int32_t proto_tos; /* proto, tos, pad, flags(v5) */
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u_int32_t asses; /* v1: flags; v5: src,dst AS */
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u_int32_t masks; /* src,dst addr prefix; v6: encaps */
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struct in_addr peer_nexthop; /* v6: IP address of the nexthop within the peer (FIB)*/
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};
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void
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cnfp_print(const u_char *cp, u_int len, const u_char *bp)
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{
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register const struct nfhdr *nh;
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register const struct nfrec *nr;
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register const struct ip *ip;
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struct protoent *pent;
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int nrecs, ver;
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time_t t;
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ip = (const struct ip *)bp;
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nh = (const struct nfhdr *)cp;
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if ((const u_char *)(nh + 1) > snapend)
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return;
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nrecs = ntohl(nh->ver_cnt) & 0xffff;
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ver = (ntohl(nh->ver_cnt) & 0xffff0000) >> 16;
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t = ntohl(nh->utc_sec);
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/* (p = ctime(&t))[24] = '\0'; */
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printf("NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
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(unsigned)ntohl(nh->msys_uptime)/1000,
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(unsigned)ntohl(nh->msys_uptime)%1000,
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(unsigned)ntohl(nh->utc_sec), (unsigned)ntohl(nh->utc_nsec));
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if (ver == 5 || ver == 6) {
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printf("#%u, ", (unsigned)htonl(nh->sequence));
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nr = (const struct nfrec *)&nh[1];
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snaplen -= 24;
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} else {
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nr = (const struct nfrec *)&nh->sequence;
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snaplen -= 16;
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}
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printf("%2u recs", nrecs);
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for (; nrecs-- && (const u_char *)(nr + 1) <= snapend; nr++) {
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char buf[20];
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char asbuf[20];
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printf("\n started %u.%03u, last %u.%03u",
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(unsigned)ntohl(nr->start_time)/1000,
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(unsigned)ntohl(nr->start_time)%1000,
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(unsigned)ntohl(nr->last_time)/1000,
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(unsigned)ntohl(nr->last_time)%1000);
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asbuf[0] = buf[0] = '\0';
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if (ver == 5 || ver == 6) {
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snprintf(buf, sizeof(buf), "/%u",
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(unsigned)(ntohl(nr->masks) >> 24) & 0xff);
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snprintf(asbuf, sizeof(asbuf), ":%u",
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(unsigned)(ntohl(nr->asses) >> 16) & 0xffff);
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}
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printf("\n %s%s%s:%u ", inet_ntoa(nr->src_ina), buf, asbuf,
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(unsigned)ntohl(nr->ports) >> 16);
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if (ver == 5 || ver ==6) {
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snprintf(buf, sizeof(buf), "/%d",
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(unsigned)(ntohl(nr->masks) >> 16) & 0xff);
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snprintf(asbuf, sizeof(asbuf), ":%u",
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(unsigned)ntohl(nr->asses) & 0xffff);
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}
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printf("> %s%s%s:%u ", inet_ntoa(nr->dst_ina), buf, asbuf,
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(unsigned)ntohl(nr->ports) & 0xffff);
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printf(">> %s\n ", inet_ntoa(nr->nhop_ina));
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pent = getprotobynumber((ntohl(nr->proto_tos) >> 8) & 0xff);
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if (!pent || nflag)
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printf("%u ",
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(unsigned)(ntohl(nr->proto_tos) >> 8) & 0xff);
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else
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printf("%s ", pent->p_name);
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/* tcp flags for tcp only */
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if (pent && pent->p_proto == IPPROTO_TCP) {
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int flags;
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if (ver == 1)
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flags = (ntohl(nr->asses) >> 24) & 0xff;
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else
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flags = (ntohl(nr->proto_tos) >> 16) & 0xff;
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if (flags & TH_FIN) putchar('F');
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if (flags & TH_SYN) putchar('S');
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if (flags & TH_RST) putchar('R');
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if (flags & TH_PUSH) putchar('P');
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if (flags & TH_ACK) putchar('A');
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if (flags & TH_URG) putchar('U');
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if (flags)
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putchar(' ');
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}
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buf[0]='\0';
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if (ver == 6) {
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snprintf(buf, sizeof(buf), "(%u<>%u encaps)",
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(unsigned)(ntohl(nr->masks) >> 8) & 0xff,
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(unsigned)(ntohl(nr->masks)) & 0xff);
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}
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printf("tos %u, %u (%u octets) %s",
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(unsigned)ntohl(nr->proto_tos) & 0xff,
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(unsigned)ntohl(nr->packets),
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(unsigned)ntohl(nr->octets), buf);
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}
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}
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