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![Joseph Mingrone](/assets/img/avatar_default.png)
Local changes: - Update some local modifications to fix build - Synch config.h with upstream as much as possible Changelog: https://git.tcpdump.org/tcpdump/blob/55bc126b0216cfe409b8d6bd378f65679d136ddf:/CHANGES Reviewed by: emaste Obtained from: https://www.tcpdump.org/release/tcpdump-4.99.4.tar.gz Sponsored by: The FreeBSD Foundation
487 lines
14 KiB
C
487 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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/* \summary: Cisco NetFlow protocol printer */
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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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* https://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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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "netdissect-stdinc.h"
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#include <stdio.h>
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#include "netdissect.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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nd_uint16_t version; /* version number */
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nd_uint16_t count; /* # of records */
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nd_uint32_t msys_uptime;
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nd_uint32_t utc_sec;
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nd_uint32_t utc_nsec;
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};
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struct nfrec_v1 {
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nd_ipv4 src_ina;
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nd_ipv4 dst_ina;
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nd_ipv4 nhop_ina;
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nd_uint16_t input; /* SNMP index of input interface */
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nd_uint16_t output; /* SNMP index of output interface */
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nd_uint32_t packets; /* packets in the flow */
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nd_uint32_t octets; /* layer 3 octets in the packets of the flow */
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nd_uint32_t start_time; /* sys_uptime value at start of flow */
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nd_uint32_t last_time; /* sys_uptime value when last packet of flow was received */
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nd_uint16_t srcport; /* TCP/UDP source port or equivalent */
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nd_uint16_t dstport; /* TCP/UDP source port or equivalent */
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nd_byte pad1[2]; /* pad */
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nd_uint8_t proto; /* IP protocol type */
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nd_uint8_t tos; /* IP type of service */
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nd_uint8_t tcp_flags; /* cumulative OR of TCP flags */
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nd_byte pad[3]; /* padding */
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nd_uint32_t reserved; /* unused */
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};
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struct nfhdr_v5 {
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nd_uint16_t version; /* version number */
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nd_uint16_t count; /* # of records */
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nd_uint32_t msys_uptime;
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nd_uint32_t utc_sec;
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nd_uint32_t utc_nsec;
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nd_uint32_t sequence; /* flow sequence number */
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nd_uint8_t engine_type; /* type of flow-switching engine */
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nd_uint8_t engine_id; /* slot number of the flow-switching engine */
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nd_uint16_t sampling_interval; /* sampling mode and interval */
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};
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struct nfrec_v5 {
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nd_ipv4 src_ina;
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nd_ipv4 dst_ina;
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nd_ipv4 nhop_ina;
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nd_uint16_t input; /* SNMP index of input interface */
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nd_uint16_t output; /* SNMP index of output interface */
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nd_uint32_t packets; /* packets in the flow */
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nd_uint32_t octets; /* layer 3 octets in the packets of the flow */
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nd_uint32_t start_time; /* sys_uptime value at start of flow */
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nd_uint32_t last_time; /* sys_uptime value when last packet of flow was received */
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nd_uint16_t srcport; /* TCP/UDP source port or equivalent */
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nd_uint16_t dstport; /* TCP/UDP source port or equivalent */
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nd_byte pad1; /* pad */
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nd_uint8_t tcp_flags; /* cumulative OR of TCP flags */
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nd_uint8_t proto; /* IP protocol type */
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nd_uint8_t tos; /* IP type of service */
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nd_uint16_t src_as; /* AS number of the source */
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nd_uint16_t dst_as; /* AS number of the destination */
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nd_uint8_t src_mask; /* source address mask bits */
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nd_uint8_t dst_mask; /* destination address prefix mask bits */
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nd_byte pad2[2];
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nd_ipv4 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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nd_uint16_t version; /* version number */
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nd_uint16_t count; /* # of records */
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nd_uint32_t msys_uptime;
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nd_uint32_t utc_sec;
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nd_uint32_t utc_nsec;
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nd_uint32_t sequence; /* v5 flow sequence number */
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nd_uint32_t reserved; /* v5 only */
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};
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struct nfrec_v6 {
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nd_ipv4 src_ina;
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nd_ipv4 dst_ina;
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nd_ipv4 nhop_ina;
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nd_uint16_t input; /* SNMP index of input interface */
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nd_uint16_t output; /* SNMP index of output interface */
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nd_uint32_t packets; /* packets in the flow */
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nd_uint32_t octets; /* layer 3 octets in the packets of the flow */
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nd_uint32_t start_time; /* sys_uptime value at start of flow */
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nd_uint32_t last_time; /* sys_uptime value when last packet of flow was received */
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nd_uint16_t srcport; /* TCP/UDP source port or equivalent */
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nd_uint16_t dstport; /* TCP/UDP source port or equivalent */
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nd_byte pad1; /* pad */
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nd_uint8_t tcp_flags; /* cumulative OR of TCP flags */
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nd_uint8_t proto; /* IP protocol type */
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nd_uint8_t tos; /* IP type of service */
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nd_uint16_t src_as; /* AS number of the source */
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nd_uint16_t dst_as; /* AS number of the destination */
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nd_uint8_t src_mask; /* source address mask bits */
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nd_uint8_t dst_mask; /* destination address prefix mask bits */
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nd_uint16_t flags;
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nd_ipv4 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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const struct nfhdr_v1 *nh;
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const struct nfrec_v1 *nr;
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const char *p_name;
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uint8_t proto;
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u_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_SIZE(nh);
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ver = GET_BE_U_2(nh->version);
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nrecs = GET_BE_U_4(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 = GET_BE_U_4(nh->utc_sec);
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#endif
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ND_PRINT("NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
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GET_BE_U_4(nh->msys_uptime)/1000,
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GET_BE_U_4(nh->msys_uptime)%1000,
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GET_BE_U_4(nh->utc_sec), GET_BE_U_4(nh->utc_nsec));
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nr = (const struct nfrec_v1 *)&nh[1];
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ND_PRINT("%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_SIZE(nr);
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ND_PRINT("\n started %u.%03u, last %u.%03u",
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GET_BE_U_4(nr->start_time)/1000,
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GET_BE_U_4(nr->start_time)%1000,
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GET_BE_U_4(nr->last_time)/1000,
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GET_BE_U_4(nr->last_time)%1000);
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asbuf[0] = buf[0] = '\0';
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ND_PRINT("\n %s%s%s:%u ",
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intoa(GET_IPV4_TO_NETWORK_ORDER(nr->src_ina)),
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buf, asbuf,
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GET_BE_U_2(nr->srcport));
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ND_PRINT("> %s%s%s:%u ",
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intoa(GET_IPV4_TO_NETWORK_ORDER(nr->dst_ina)),
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buf, asbuf,
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GET_BE_U_2(nr->dstport));
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ND_PRINT(">> %s\n ",
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intoa(GET_IPV4_TO_NETWORK_ORDER(nr->nhop_ina)));
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proto = GET_U_1(nr->proto);
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if (!ndo->ndo_nflag && (p_name = netdb_protoname(proto)) != NULL)
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ND_PRINT("%s ", p_name);
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else
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ND_PRINT("%u ", proto);
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/* tcp flags for tcp only */
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if (proto == IPPROTO_TCP) {
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u_int flags;
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flags = GET_U_1(nr->tcp_flags);
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ND_PRINT("%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("tos %u, %u (%u octets) %s",
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GET_U_1(nr->tos),
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GET_BE_U_4(nr->packets),
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GET_BE_U_4(nr->octets), buf);
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}
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return;
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trunc:
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nd_print_trunc(ndo);
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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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const struct nfhdr_v5 *nh;
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const struct nfrec_v5 *nr;
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const char *p_name;
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uint8_t proto;
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u_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_SIZE(nh);
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ver = GET_BE_U_2(nh->version);
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nrecs = GET_BE_U_4(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 = GET_BE_U_4(nh->utc_sec);
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#endif
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ND_PRINT("NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
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GET_BE_U_4(nh->msys_uptime)/1000,
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GET_BE_U_4(nh->msys_uptime)%1000,
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GET_BE_U_4(nh->utc_sec), GET_BE_U_4(nh->utc_nsec));
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ND_PRINT("#%u, ", GET_BE_U_4(nh->sequence));
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nr = (const struct nfrec_v5 *)&nh[1];
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ND_PRINT("%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_SIZE(nr);
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ND_PRINT("\n started %u.%03u, last %u.%03u",
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GET_BE_U_4(nr->start_time)/1000,
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GET_BE_U_4(nr->start_time)%1000,
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GET_BE_U_4(nr->last_time)/1000,
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GET_BE_U_4(nr->last_time)%1000);
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asbuf[0] = buf[0] = '\0';
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snprintf(buf, sizeof(buf), "/%u", GET_U_1(nr->src_mask));
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snprintf(asbuf, sizeof(asbuf), ":%u",
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GET_BE_U_2(nr->src_as));
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ND_PRINT("\n %s%s%s:%u ",
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intoa(GET_IPV4_TO_NETWORK_ORDER(nr->src_ina)),
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buf, asbuf,
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GET_BE_U_2(nr->srcport));
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snprintf(buf, sizeof(buf), "/%u", GET_U_1(nr->dst_mask));
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snprintf(asbuf, sizeof(asbuf), ":%u",
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GET_BE_U_2(nr->dst_as));
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ND_PRINT("> %s%s%s:%u ",
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intoa(GET_IPV4_TO_NETWORK_ORDER(nr->dst_ina)),
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buf, asbuf,
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GET_BE_U_2(nr->dstport));
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ND_PRINT(">> %s\n ",
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intoa(GET_IPV4_TO_NETWORK_ORDER(nr->nhop_ina)));
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proto = GET_U_1(nr->proto);
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if (!ndo->ndo_nflag && (p_name = netdb_protoname(proto)) != NULL)
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ND_PRINT("%s ", p_name);
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else
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ND_PRINT("%u ", proto);
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/* tcp flags for tcp only */
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if (proto == IPPROTO_TCP) {
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u_int flags;
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flags = GET_U_1(nr->tcp_flags);
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ND_PRINT("%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("tos %u, %u (%u octets) %s",
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GET_U_1(nr->tos),
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GET_BE_U_4(nr->packets),
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GET_BE_U_4(nr->octets), buf);
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}
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return;
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trunc:
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nd_print_trunc(ndo);
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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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const struct nfhdr_v6 *nh;
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const struct nfrec_v6 *nr;
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const char *p_name;
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uint8_t proto;
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u_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_SIZE(nh);
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ver = GET_BE_U_2(nh->version);
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nrecs = GET_BE_U_4(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 = GET_BE_U_4(nh->utc_sec);
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#endif
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ND_PRINT("NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
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GET_BE_U_4(nh->msys_uptime)/1000,
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GET_BE_U_4(nh->msys_uptime)%1000,
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GET_BE_U_4(nh->utc_sec), GET_BE_U_4(nh->utc_nsec));
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ND_PRINT("#%u, ", GET_BE_U_4(nh->sequence));
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nr = (const struct nfrec_v6 *)&nh[1];
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ND_PRINT("%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_SIZE(nr);
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ND_PRINT("\n started %u.%03u, last %u.%03u",
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GET_BE_U_4(nr->start_time)/1000,
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GET_BE_U_4(nr->start_time)%1000,
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GET_BE_U_4(nr->last_time)/1000,
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GET_BE_U_4(nr->last_time)%1000);
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asbuf[0] = buf[0] = '\0';
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snprintf(buf, sizeof(buf), "/%u", GET_U_1(nr->src_mask));
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snprintf(asbuf, sizeof(asbuf), ":%u",
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GET_BE_U_2(nr->src_as));
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ND_PRINT("\n %s%s%s:%u ",
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intoa(GET_IPV4_TO_NETWORK_ORDER(nr->src_ina)),
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buf, asbuf,
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GET_BE_U_2(nr->srcport));
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snprintf(buf, sizeof(buf), "/%u", GET_U_1(nr->dst_mask));
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snprintf(asbuf, sizeof(asbuf), ":%u",
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GET_BE_U_2(nr->dst_as));
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ND_PRINT("> %s%s%s:%u ",
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intoa(GET_IPV4_TO_NETWORK_ORDER(nr->dst_ina)),
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buf, asbuf,
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GET_BE_U_2(nr->dstport));
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ND_PRINT(">> %s\n ",
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intoa(GET_IPV4_TO_NETWORK_ORDER(nr->nhop_ina)));
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proto = GET_U_1(nr->proto);
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if (!ndo->ndo_nflag && (p_name = netdb_protoname(proto)) != NULL)
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ND_PRINT("%s ", p_name);
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else
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ND_PRINT("%u ", proto);
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/* tcp flags for tcp only */
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if (proto == IPPROTO_TCP) {
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u_int flags;
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flags = GET_U_1(nr->tcp_flags);
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ND_PRINT("%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';
|
|
snprintf(buf, sizeof(buf), "(%u<>%u encaps)",
|
|
(GET_BE_U_2(nr->flags) >> 8) & 0xff,
|
|
(GET_BE_U_2(nr->flags)) & 0xff);
|
|
ND_PRINT("tos %u, %u (%u octets) %s",
|
|
GET_U_1(nr->tos),
|
|
GET_BE_U_4(nr->packets),
|
|
GET_BE_U_4(nr->octets), buf);
|
|
}
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
void
|
|
cnfp_print(netdissect_options *ndo, const u_char *cp)
|
|
{
|
|
int ver;
|
|
|
|
/*
|
|
* First 2 bytes are the version number.
|
|
*/
|
|
ndo->ndo_protocol = "cnfp";
|
|
ver = GET_BE_U_2(cp);
|
|
switch (ver) {
|
|
|
|
case 1:
|
|
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("NetFlow v%x", ver);
|
|
break;
|
|
}
|
|
}
|