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|---|---|---|
| c8cf0f94 PA |
1 | /* $OpenBSD: print-cnfp.c,v 1.2 1998/06/25 20:26:59 mickey Exp $ */ |
| 2 | ||
| 3 | /* | |
| 4 | * Copyright (c) 1998 Michael Shalayeff | |
| 5 | * All rights reserved. | |
| 6 | * | |
| 7 | * Redistribution and use in source and binary forms, with or without | |
| 8 | * modification, are permitted provided that the following conditions | |
| 9 | * are met: | |
| 10 | * 1. Redistributions of source code must retain the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer. | |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 | * notice, this list of conditions and the following disclaimer in the | |
| 14 | * documentation and/or other materials provided with the distribution. | |
| 15 | * 3. All advertising materials mentioning features or use of this software | |
| 16 | * must display the following acknowledgement: | |
| 17 | * This product includes software developed by Michael Shalayeff. | |
| 18 | * 4. The name of the author may not be used to endorse or promote products | |
| 19 | * derived from this software without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
| 22 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
| 23 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 24 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 26 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 30 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 31 | */ | |
| 32 | ||
| 33 | /* Cisco NetFlow protocol */ | |
| 34 | ||
| 35 | #ifndef lint | |
| 36 | static const char rcsid[] _U_ = | |
| 37 | "@(#) $Header: /tcpdump/master/tcpdump/print-cnfp.c,v 1.16.2.1 2005/04/20 20:53:39 guy Exp $"; | |
| 38 | #endif | |
| 39 | ||
| 40 | #ifdef HAVE_CONFIG_H | |
| 41 | #include "config.h" | |
| 42 | #endif | |
| 43 | ||
| 44 | #include <tcpdump-stdinc.h> | |
| 45 | ||
| 46 | #include <stdio.h> | |
| 47 | #include <string.h> | |
| 48 | ||
| 49 | #include "interface.h" | |
| 50 | #include "addrtoname.h" | |
| 51 | #include "extract.h" | |
| 52 | ||
| 53 | #include "tcp.h" | |
| 54 | #include "ipproto.h" | |
| 55 | ||
| 56 | struct nfhdr { | |
| 57 | u_int32_t ver_cnt; /* version [15], and # of records */ | |
| 58 | u_int32_t msys_uptime; | |
| 59 | u_int32_t utc_sec; | |
| 60 | u_int32_t utc_nsec; | |
| 61 | u_int32_t sequence; /* v5 flow sequence number */ | |
| 62 | u_int32_t reserved; /* v5 only */ | |
| 63 | }; | |
| 64 | ||
| 65 | struct nfrec { | |
| 66 | struct in_addr src_ina; | |
| 67 | struct in_addr dst_ina; | |
| 68 | struct in_addr nhop_ina; | |
| 69 | u_int32_t ifaces; /* src,dst ifaces */ | |
| 70 | u_int32_t packets; | |
| 71 | u_int32_t octets; | |
| 72 | u_int32_t start_time; /* sys_uptime value */ | |
| 73 | u_int32_t last_time; /* sys_uptime value */ | |
| 74 | u_int32_t ports; /* src,dst ports */ | |
| 75 | u_int32_t proto_tos; /* proto, tos, pad, flags(v5) */ | |
| 76 | u_int32_t asses; /* v1: flags; v5: src,dst AS */ | |
| 77 | u_int32_t masks; /* src,dst addr prefix; v6: encaps */ | |
| 78 | struct in_addr peer_nexthop; /* v6: IP address of the nexthop within the peer (FIB)*/ | |
| 79 | }; | |
| 80 | ||
| 81 | void | |
| 82 | cnfp_print(const u_char *cp, const u_char *bp _U_) | |
| 83 | { | |
| 84 | register const struct nfhdr *nh; | |
| 85 | register const struct nfrec *nr; | |
| 86 | struct protoent *pent; | |
| 87 | int nrecs, ver; | |
| 88 | #if 0 | |
| 89 | time_t t; | |
| 90 | #endif | |
| 91 | ||
| 92 | nh = (const struct nfhdr *)cp; | |
| 93 | ||
| 94 | if ((const u_char *)(nh + 1) > snapend) | |
| 95 | return; | |
| 96 | ||
| 97 | nrecs = EXTRACT_32BITS(&nh->ver_cnt) & 0xffff; | |
| 98 | ver = (EXTRACT_32BITS(&nh->ver_cnt) & 0xffff0000) >> 16; | |
| 99 | #if 0 | |
| 100 | /* | |
| 101 | * This is seconds since the UN*X epoch, and is followed by | |
| 102 | * nanoseconds. XXX - format it, rather than just dumping the | |
| 103 | * raw seconds-since-the-Epoch. | |
| 104 | */ | |
| 105 | t = EXTRACT_32BITS(&nh->utc_sec); | |
| 106 | #endif | |
| 107 | ||
| 108 | printf("NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver, | |
| 109 | EXTRACT_32BITS(&nh->msys_uptime)/1000, | |
| 110 | EXTRACT_32BITS(&nh->msys_uptime)%1000, | |
| 111 | EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec)); | |
| 112 | ||
| 113 | if (ver == 5 || ver == 6) { | |
| 114 | printf("#%u, ", EXTRACT_32BITS(&nh->sequence)); | |
| 115 | nr = (const struct nfrec *)&nh[1]; | |
| 116 | snaplen -= 24; | |
| 117 | } else { | |
| 118 | nr = (const struct nfrec *)&nh->sequence; | |
| 119 | snaplen -= 16; | |
| 120 | } | |
| 121 | ||
| 122 | printf("%2u recs", nrecs); | |
| 123 | ||
| 124 | for (; nrecs-- && (const u_char *)(nr + 1) <= snapend; nr++) { | |
| 125 | char buf[20]; | |
| 126 | char asbuf[20]; | |
| 127 | ||
| 128 | printf("\n started %u.%03u, last %u.%03u", | |
| 129 | EXTRACT_32BITS(&nr->start_time)/1000, | |
| 130 | EXTRACT_32BITS(&nr->start_time)%1000, | |
| 131 | EXTRACT_32BITS(&nr->last_time)/1000, | |
| 132 | EXTRACT_32BITS(&nr->last_time)%1000); | |
| 133 | ||
| 134 | asbuf[0] = buf[0] = '\0'; | |
| 135 | if (ver == 5 || ver == 6) { | |
| 136 | snprintf(buf, sizeof(buf), "/%u", | |
| 137 | (EXTRACT_32BITS(&nr->masks) >> 24) & 0xff); | |
| 138 | snprintf(asbuf, sizeof(asbuf), ":%u", | |
| 139 | (EXTRACT_32BITS(&nr->asses) >> 16) & 0xffff); | |
| 140 | } | |
| 141 | printf("\n %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf, | |
| 142 | EXTRACT_32BITS(&nr->ports) >> 16); | |
| 143 | ||
| 144 | if (ver == 5 || ver ==6) { | |
| 145 | snprintf(buf, sizeof(buf), "/%d", | |
| 146 | (EXTRACT_32BITS(&nr->masks) >> 16) & 0xff); | |
| 147 | snprintf(asbuf, sizeof(asbuf), ":%u", | |
| 148 | EXTRACT_32BITS(&nr->asses) & 0xffff); | |
| 149 | } | |
| 150 | printf("> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf, | |
| 151 | EXTRACT_32BITS(&nr->ports) & 0xffff); | |
| 152 | ||
| 153 | printf(">> %s\n ", intoa(nr->nhop_ina.s_addr)); | |
| 154 | ||
| 155 | pent = getprotobynumber((EXTRACT_32BITS(&nr->proto_tos) >> 8) & 0xff); | |
| 156 | if (!pent || nflag) | |
| 157 | printf("%u ", | |
| 158 | (EXTRACT_32BITS(&nr->proto_tos) >> 8) & 0xff); | |
| 159 | else | |
| 160 | printf("%s ", pent->p_name); | |
| 161 | ||
| 162 | /* tcp flags for tcp only */ | |
| 163 | if (pent && pent->p_proto == IPPROTO_TCP) { | |
| 164 | int flags; | |
| 165 | if (ver == 1) | |
| 166 | flags = (EXTRACT_32BITS(&nr->asses) >> 24) & 0xff; | |
| 167 | else | |
| 168 | flags = (EXTRACT_32BITS(&nr->proto_tos) >> 16) & 0xff; | |
| 169 | if (flags & TH_FIN) putchar('F'); | |
| 170 | if (flags & TH_SYN) putchar('S'); | |
| 171 | if (flags & TH_RST) putchar('R'); | |
| 172 | if (flags & TH_PUSH) putchar('P'); | |
| 173 | if (flags & TH_ACK) putchar('A'); | |
| 174 | if (flags & TH_URG) putchar('U'); | |
| 175 | if (flags) | |
| 176 | putchar(' '); | |
| 177 | } | |
| 178 | ||
| 179 | buf[0]='\0'; | |
| 180 | if (ver == 6) { | |
| 181 | snprintf(buf, sizeof(buf), "(%u<>%u encaps)", | |
| 182 | (EXTRACT_32BITS(&nr->masks) >> 8) & 0xff, | |
| 183 | (EXTRACT_32BITS(&nr->masks)) & 0xff); | |
| 184 | } | |
| 185 | printf("tos %u, %u (%u octets) %s", | |
| 186 | EXTRACT_32BITS(&nr->proto_tos) & 0xff, | |
| 187 | EXTRACT_32BITS(&nr->packets), | |
| 188 | EXTRACT_32BITS(&nr->octets), buf); | |
| 189 | } | |
| 190 | } |