8bdc5a6251
Also, the changes made in r272451 and r272653 that were lost in the merge of 4.6.2 (r276788) have been restored. PR: 199568 Differential Revision: https://reviews.freebsd.org/D3007 Reviewed by: brooks, hiren Approved by: jmallett (mentor) MFC after: 1 month
477 lines
14 KiB
C
477 lines
14 KiB
C
/* $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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/*
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* Cisco NetFlow protocol
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*
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* See
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*
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* http://www.cisco.com/c/en/us/td/docs/net_mgmt/netflow_collection_engine/3-6/user/guide/format.html#wp1005892
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*/
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#define NETDISSECT_REWORKED
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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 <tcpdump-stdinc.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 "addrtoname.h"
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#include "extract.h"
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#include "tcp.h"
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#include "ipproto.h"
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struct nfhdr_v1 {
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uint16_t version; /* version number */
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uint16_t count; /* # of records */
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uint32_t msys_uptime;
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uint32_t utc_sec;
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uint32_t utc_nsec;
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};
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struct nfrec_v1 {
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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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uint16_t input; /* SNMP index of input interface */
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uint16_t output; /* SNMP index of output interface */
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uint32_t packets; /* packets in the flow */
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uint32_t octets; /* layer 3 octets in the packets of the flow */
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uint32_t start_time; /* sys_uptime value at start of flow */
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uint32_t last_time; /* sys_uptime value when last packet of flow was received */
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uint16_t srcport; /* TCP/UDP source port or equivalent */
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uint16_t dstport; /* TCP/UDP source port or equivalent */
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uint16_t pad1; /* pad */
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uint8_t proto; /* IP protocol type */
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uint8_t tos; /* IP type of service */
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uint8_t tcp_flags; /* cumulative OR of TCP flags */
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uint8_t pad[3]; /* padding */
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uint32_t reserved; /* unused */
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};
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struct nfhdr_v5 {
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uint16_t version; /* version number */
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uint16_t count; /* # of records */
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uint32_t msys_uptime;
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uint32_t utc_sec;
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uint32_t utc_nsec;
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uint32_t sequence; /* flow sequence number */
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uint8_t engine_type; /* type of flow-switching engine */
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uint8_t engine_id; /* slot number of the flow-switching engine */
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uint16_t sampling_interval; /* sampling mode and interval */
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};
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struct nfrec_v5 {
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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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uint16_t input; /* SNMP index of input interface */
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uint16_t output; /* SNMP index of output interface */
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uint32_t packets; /* packets in the flow */
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uint32_t octets; /* layer 3 octets in the packets of the flow */
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uint32_t start_time; /* sys_uptime value at start of flow */
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uint32_t last_time; /* sys_uptime value when last packet of flow was received */
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uint16_t srcport; /* TCP/UDP source port or equivalent */
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uint16_t dstport; /* TCP/UDP source port or equivalent */
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uint8_t pad1; /* pad */
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uint8_t tcp_flags; /* cumulative OR of TCP flags */
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uint8_t proto; /* IP protocol type */
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uint8_t tos; /* IP type of service */
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uint16_t src_as; /* AS number of the source */
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uint16_t dst_as; /* AS number of the destination */
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uint8_t src_mask; /* source address mask bits */
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uint8_t dst_mask; /* destination address prefix mask bits */
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uint16_t pad2;
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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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struct nfhdr_v6 {
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uint16_t version; /* version number */
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uint16_t count; /* # of records */
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uint32_t msys_uptime;
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uint32_t utc_sec;
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uint32_t utc_nsec;
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uint32_t sequence; /* v5 flow sequence number */
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uint32_t reserved; /* v5 only */
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};
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struct nfrec_v6 {
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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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uint16_t input; /* SNMP index of input interface */
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uint16_t output; /* SNMP index of output interface */
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uint32_t packets; /* packets in the flow */
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uint32_t octets; /* layer 3 octets in the packets of the flow */
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uint32_t start_time; /* sys_uptime value at start of flow */
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uint32_t last_time; /* sys_uptime value when last packet of flow was received */
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uint16_t srcport; /* TCP/UDP source port or equivalent */
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uint16_t dstport; /* TCP/UDP source port or equivalent */
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uint8_t pad1; /* pad */
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uint8_t tcp_flags; /* cumulative OR of TCP flags */
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uint8_t proto; /* IP protocol type */
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uint8_t tos; /* IP type of service */
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uint16_t src_as; /* AS number of the source */
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uint16_t dst_as; /* AS number of the destination */
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uint8_t src_mask; /* source address mask bits */
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uint8_t dst_mask; /* destination address prefix mask bits */
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uint16_t flags;
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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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static void
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cnfp_v1_print(netdissect_options *ndo, const u_char *cp)
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{
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register const struct nfhdr_v1 *nh;
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register const struct nfrec_v1 *nr;
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struct protoent *pent;
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int nrecs, ver;
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#if 0
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time_t t;
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#endif
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nh = (const struct nfhdr_v1 *)cp;
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ND_TCHECK(*nh);
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ver = EXTRACT_16BITS(&nh->version);
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nrecs = EXTRACT_32BITS(&nh->count);
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#if 0
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/*
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* This is seconds since the UN*X epoch, and is followed by
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* nanoseconds. XXX - format it, rather than just dumping the
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* raw seconds-since-the-Epoch.
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*/
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t = EXTRACT_32BITS(&nh->utc_sec);
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#endif
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ND_PRINT((ndo, "NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
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EXTRACT_32BITS(&nh->msys_uptime)/1000,
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EXTRACT_32BITS(&nh->msys_uptime)%1000,
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EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec)));
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nr = (const struct nfrec_v1 *)&nh[1];
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ND_PRINT((ndo, "%2u recs", nrecs));
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for (; nrecs != 0; nr++, nrecs--) {
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char buf[20];
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char asbuf[20];
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/*
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* Make sure we have the entire record.
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*/
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ND_TCHECK(*nr);
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ND_PRINT((ndo, "\n started %u.%03u, last %u.%03u",
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EXTRACT_32BITS(&nr->start_time)/1000,
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EXTRACT_32BITS(&nr->start_time)%1000,
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EXTRACT_32BITS(&nr->last_time)/1000,
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EXTRACT_32BITS(&nr->last_time)%1000));
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asbuf[0] = buf[0] = '\0';
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ND_PRINT((ndo, "\n %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf,
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EXTRACT_16BITS(&nr->srcport)));
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ND_PRINT((ndo, "> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf,
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EXTRACT_16BITS(&nr->dstport)));
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ND_PRINT((ndo, ">> %s\n ", intoa(nr->nhop_ina.s_addr)));
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pent = getprotobynumber(nr->proto);
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if (!pent || ndo->ndo_nflag)
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ND_PRINT((ndo, "%u ", nr->proto));
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else
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ND_PRINT((ndo, "%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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flags = nr->tcp_flags;
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ND_PRINT((ndo, "%s%s%s%s%s%s%s",
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flags & TH_FIN ? "F" : "",
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flags & TH_SYN ? "S" : "",
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flags & TH_RST ? "R" : "",
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flags & TH_PUSH ? "P" : "",
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flags & TH_ACK ? "A" : "",
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flags & TH_URG ? "U" : "",
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flags ? " " : ""));
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}
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buf[0]='\0';
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ND_PRINT((ndo, "tos %u, %u (%u octets) %s",
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nr->tos,
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EXTRACT_32BITS(&nr->packets),
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EXTRACT_32BITS(&nr->octets), buf));
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}
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return;
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trunc:
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ND_PRINT((ndo, "[|cnfp]"));
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return;
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}
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static void
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cnfp_v5_print(netdissect_options *ndo, const u_char *cp)
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{
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register const struct nfhdr_v5 *nh;
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register const struct nfrec_v5 *nr;
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struct protoent *pent;
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int nrecs, ver;
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#if 0
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time_t t;
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#endif
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nh = (const struct nfhdr_v5 *)cp;
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ND_TCHECK(*nh);
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ver = EXTRACT_16BITS(&nh->version);
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nrecs = EXTRACT_32BITS(&nh->count);
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#if 0
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/*
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* This is seconds since the UN*X epoch, and is followed by
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* nanoseconds. XXX - format it, rather than just dumping the
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* raw seconds-since-the-Epoch.
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*/
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t = EXTRACT_32BITS(&nh->utc_sec);
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#endif
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ND_PRINT((ndo, "NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
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EXTRACT_32BITS(&nh->msys_uptime)/1000,
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EXTRACT_32BITS(&nh->msys_uptime)%1000,
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EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec)));
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ND_PRINT((ndo, "#%u, ", EXTRACT_32BITS(&nh->sequence)));
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nr = (const struct nfrec_v5 *)&nh[1];
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ND_PRINT((ndo, "%2u recs", nrecs));
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for (; nrecs != 0; nr++, nrecs--) {
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char buf[20];
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char asbuf[20];
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/*
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* Make sure we have the entire record.
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*/
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ND_TCHECK(*nr);
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ND_PRINT((ndo, "\n started %u.%03u, last %u.%03u",
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EXTRACT_32BITS(&nr->start_time)/1000,
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EXTRACT_32BITS(&nr->start_time)%1000,
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EXTRACT_32BITS(&nr->last_time)/1000,
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EXTRACT_32BITS(&nr->last_time)%1000));
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asbuf[0] = buf[0] = '\0';
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snprintf(buf, sizeof(buf), "/%u", nr->src_mask);
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snprintf(asbuf, sizeof(asbuf), ":%u",
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EXTRACT_16BITS(&nr->src_as));
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ND_PRINT((ndo, "\n %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf,
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EXTRACT_16BITS(&nr->srcport)));
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snprintf(buf, sizeof(buf), "/%d", nr->dst_mask);
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snprintf(asbuf, sizeof(asbuf), ":%u",
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EXTRACT_16BITS(&nr->dst_as));
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ND_PRINT((ndo, "> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf,
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EXTRACT_16BITS(&nr->dstport)));
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ND_PRINT((ndo, ">> %s\n ", intoa(nr->nhop_ina.s_addr)));
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pent = getprotobynumber(nr->proto);
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if (!pent || ndo->ndo_nflag)
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ND_PRINT((ndo, "%u ", nr->proto));
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else
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ND_PRINT((ndo, "%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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flags = nr->tcp_flags;
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ND_PRINT((ndo, "%s%s%s%s%s%s%s",
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flags & TH_FIN ? "F" : "",
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flags & TH_SYN ? "S" : "",
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flags & TH_RST ? "R" : "",
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flags & TH_PUSH ? "P" : "",
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flags & TH_ACK ? "A" : "",
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flags & TH_URG ? "U" : "",
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flags ? " " : ""));
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}
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buf[0]='\0';
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ND_PRINT((ndo, "tos %u, %u (%u octets) %s",
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nr->tos,
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EXTRACT_32BITS(&nr->packets),
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EXTRACT_32BITS(&nr->octets), buf));
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}
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return;
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trunc:
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ND_PRINT((ndo, "[|cnfp]"));
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return;
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}
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static void
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cnfp_v6_print(netdissect_options *ndo, const u_char *cp)
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{
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register const struct nfhdr_v6 *nh;
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register const struct nfrec_v6 *nr;
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struct protoent *pent;
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int nrecs, ver;
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#if 0
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time_t t;
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#endif
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nh = (const struct nfhdr_v6 *)cp;
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ND_TCHECK(*nh);
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ver = EXTRACT_16BITS(&nh->version);
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nrecs = EXTRACT_32BITS(&nh->count);
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#if 0
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/*
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* This is seconds since the UN*X epoch, and is followed by
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* nanoseconds. XXX - format it, rather than just dumping the
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* raw seconds-since-the-Epoch.
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*/
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t = EXTRACT_32BITS(&nh->utc_sec);
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#endif
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ND_PRINT((ndo, "NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
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EXTRACT_32BITS(&nh->msys_uptime)/1000,
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EXTRACT_32BITS(&nh->msys_uptime)%1000,
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EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec)));
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ND_PRINT((ndo, "#%u, ", EXTRACT_32BITS(&nh->sequence)));
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nr = (const struct nfrec_v6 *)&nh[1];
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ND_PRINT((ndo, "%2u recs", nrecs));
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for (; nrecs != 0; nr++, nrecs--) {
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char buf[20];
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char asbuf[20];
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/*
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* Make sure we have the entire record.
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*/
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ND_TCHECK(*nr);
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ND_PRINT((ndo, "\n started %u.%03u, last %u.%03u",
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EXTRACT_32BITS(&nr->start_time)/1000,
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EXTRACT_32BITS(&nr->start_time)%1000,
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EXTRACT_32BITS(&nr->last_time)/1000,
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EXTRACT_32BITS(&nr->last_time)%1000));
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asbuf[0] = buf[0] = '\0';
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snprintf(buf, sizeof(buf), "/%u", nr->src_mask);
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snprintf(asbuf, sizeof(asbuf), ":%u",
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EXTRACT_16BITS(&nr->src_as));
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ND_PRINT((ndo, "\n %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf,
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EXTRACT_16BITS(&nr->srcport)));
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snprintf(buf, sizeof(buf), "/%d", nr->dst_mask);
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snprintf(asbuf, sizeof(asbuf), ":%u",
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EXTRACT_16BITS(&nr->dst_as));
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ND_PRINT((ndo, "> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf,
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EXTRACT_16BITS(&nr->dstport)));
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ND_PRINT((ndo, ">> %s\n ", intoa(nr->nhop_ina.s_addr)));
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pent = getprotobynumber(nr->proto);
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if (!pent || ndo->ndo_nflag)
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ND_PRINT((ndo, "%u ", nr->proto));
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else
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ND_PRINT((ndo, "%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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flags = nr->tcp_flags;
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ND_PRINT((ndo, "%s%s%s%s%s%s%s",
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flags & TH_FIN ? "F" : "",
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flags & TH_SYN ? "S" : "",
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flags & TH_RST ? "R" : "",
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flags & TH_PUSH ? "P" : "",
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flags & TH_ACK ? "A" : "",
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flags & TH_URG ? "U" : "",
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flags ? " " : ""));
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}
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buf[0]='\0';
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snprintf(buf, sizeof(buf), "(%u<>%u encaps)",
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(EXTRACT_16BITS(&nr->flags) >> 8) & 0xff,
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(EXTRACT_16BITS(&nr->flags)) & 0xff);
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ND_PRINT((ndo, "tos %u, %u (%u octets) %s",
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nr->tos,
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EXTRACT_32BITS(&nr->packets),
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EXTRACT_32BITS(&nr->octets), buf));
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}
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return;
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trunc:
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ND_PRINT((ndo, "[|cnfp]"));
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return;
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}
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void
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cnfp_print(netdissect_options *ndo, const u_char *cp)
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{
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int ver;
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/*
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* First 2 bytes are the version number.
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*/
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ND_TCHECK2(*cp, 2);
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ver = EXTRACT_16BITS(cp);
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switch (ver) {
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case 1:
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cnfp_v1_print(ndo, cp);
|
|
break;
|
|
|
|
case 5:
|
|
cnfp_v5_print(ndo, cp);
|
|
break;
|
|
|
|
case 6:
|
|
cnfp_v6_print(ndo, cp);
|
|
break;
|
|
|
|
default:
|
|
ND_PRINT((ndo, "NetFlow v%x", ver));
|
|
break;
|
|
}
|
|
return;
|
|
|
|
trunc:
|
|
ND_PRINT((ndo, "[|cnfp]"));
|
|
return;
|
|
}
|