external/bsd/tcpdump/dist/print-cnfp.c

   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  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * Cisco NetFlow protocol
  30  *
  31  * See
  32  *
  33  *    http://www.cisco.com/c/en/us/td/docs/net_mgmt/netflow_collection_engine/3-6/user/guide/format.html#wp1005892
  34  */
  35
  36 #include <sys/cdefs.h>
  37 #ifndef lint
  38 __RCSID("$NetBSD: print-cnfp.c,v 1.5 2015/03/31 21:59:35 christos Exp $");
  39 #endif
  40
  41 #define NETDISSECT_REWORKED
  42 #ifdef HAVE_CONFIG_H
  43 #include "config.h"
  44 #endif
  45
  46 #include <tcpdump-stdinc.h>
  47
  48 #include <stdio.h>
  49 #include <string.h>
  50
  51 #include "interface.h"
  52 #include "addrtoname.h"
  53 #include "extract.h"
  54
  55 #include "tcp.h"
  56 #include "ipproto.h"
  57
  58 struct nfhdr_v1 {
  59         uint16_t        version;        /* version number */
  60         uint16_t        count;          /* # of records */
  61         uint32_t        msys_uptime;
  62         uint32_t        utc_sec;
  63         uint32_t        utc_nsec;
  64 };
  65
  66 struct nfrec_v1 {
  67         struct in_addr  src_ina;
  68         struct in_addr  dst_ina;
  69         struct in_addr  nhop_ina;
  70         uint16_t        input;          /* SNMP index of input interface */
  71         uint16_t        output;         /* SNMP index of output interface */
  72         uint32_t        packets;        /* packets in the flow */
  73         uint32_t        octets;         /* layer 3 octets in the packets of the flow */
  74         uint32_t        start_time;     /* sys_uptime value at start of flow */
  75         uint32_t        last_time;      /* sys_uptime value when last packet of flow was received */
  76         uint16_t        srcport;        /* TCP/UDP source port or equivalent */
  77         uint16_t        dstport;        /* TCP/UDP source port or equivalent */
  78         uint16_t        pad1;           /* pad */
  79         uint8_t         proto;          /* IP protocol type */
  80         uint8_t         tos;            /* IP type of service */
  81         uint8_t         tcp_flags;      /* cumulative OR of TCP flags */
  82         uint8_t         pad[3];         /* padding */
  83         uint32_t        reserved;       /* unused */
  84 };
  85
  86 struct nfhdr_v5 {
  87         uint16_t        version;        /* version number */
  88         uint16_t        count;          /* # of records */
  89         uint32_t        msys_uptime;
  90         uint32_t        utc_sec;
  91         uint32_t        utc_nsec;
  92         uint32_t        sequence;       /* flow sequence number */
  93         uint8_t         engine_type;    /* type of flow-switching engine */
  94         uint8_t         engine_id;      /* slot number of the flow-switching engine */
  95         uint16_t        sampling_interval; /* sampling mode and interval */
  96 };
  97
  98 struct nfrec_v5 {
  99         struct in_addr  src_ina;
 100         struct in_addr  dst_ina;
 101         struct in_addr  nhop_ina;
 102         uint16_t        input;          /* SNMP index of input interface */
 103         uint16_t        output;         /* SNMP index of output interface */
 104         uint32_t        packets;        /* packets in the flow */
 105         uint32_t        octets;         /* layer 3 octets in the packets of the flow */
 106         uint32_t        start_time;     /* sys_uptime value at start of flow */
 107         uint32_t        last_time;      /* sys_uptime value when last packet of flow was received */
 108         uint16_t        srcport;        /* TCP/UDP source port or equivalent */
 109         uint16_t        dstport;        /* TCP/UDP source port or equivalent */
 110         uint8_t         pad1;           /* pad */
 111         uint8_t         tcp_flags;      /* cumulative OR of TCP flags */
 112         uint8_t         proto;          /* IP protocol type */
 113         uint8_t         tos;            /* IP type of service */
 114         uint16_t        src_as;         /* AS number of the source */
 115         uint16_t        dst_as;         /* AS number of the destination */
 116         uint8_t         src_mask;       /* source address mask bits */
 117         uint8_t         dst_mask;       /* destination address prefix mask bits */
 118         uint16_t        pad2;
 119         struct in_addr  peer_nexthop;   /* v6: IP address of the nexthop within the peer (FIB)*/
 120 };
 121
 122 struct nfhdr_v6 {
 123         uint16_t        version;        /* version number */
 124         uint16_t        count;          /* # of records */
 125         uint32_t        msys_uptime;
 126         uint32_t        utc_sec;
 127         uint32_t        utc_nsec;
 128         uint32_t        sequence;       /* v5 flow sequence number */
 129         uint32_t        reserved;       /* v5 only */
 130 };
 131
 132 struct nfrec_v6 {
 133         struct in_addr  src_ina;
 134         struct in_addr  dst_ina;
 135         struct in_addr  nhop_ina;
 136         uint16_t        input;          /* SNMP index of input interface */
 137         uint16_t        output;         /* SNMP index of output interface */
 138         uint32_t        packets;        /* packets in the flow */
 139         uint32_t        octets;         /* layer 3 octets in the packets of the flow */
 140         uint32_t        start_time;     /* sys_uptime value at start of flow */
 141         uint32_t        last_time;      /* sys_uptime value when last packet of flow was received */
 142         uint16_t        srcport;        /* TCP/UDP source port or equivalent */
 143         uint16_t        dstport;        /* TCP/UDP source port or equivalent */
 144         uint8_t         pad1;           /* pad */
 145         uint8_t         tcp_flags;      /* cumulative OR of TCP flags */
 146         uint8_t         proto;          /* IP protocol type */
 147         uint8_t         tos;            /* IP type of service */
 148         uint16_t        src_as;         /* AS number of the source */
 149         uint16_t        dst_as;         /* AS number of the destination */
 150         uint8_t         src_mask;       /* source address mask bits */
 151         uint8_t         dst_mask;       /* destination address prefix mask bits */
 152         uint16_t        flags;
 153         struct in_addr  peer_nexthop;   /* v6: IP address of the nexthop within the peer (FIB)*/
 154 };
 155
 156 static void
 157 cnfp_v1_print(netdissect_options *ndo, const u_char *cp)
 158 {
 159         register const struct nfhdr_v1 *nh;
 160         register const struct nfrec_v1 *nr;
 161         struct protoent *pent;
 162         int nrecs, ver;
 163 #if 0
 164         time_t t;
 165 #endif
 166
 167         nh = (const struct nfhdr_v1 *)cp;
 168         ND_TCHECK(*nh);
 169
 170         ver = EXTRACT_16BITS(&nh->version);
 171         nrecs = EXTRACT_32BITS(&nh->count);
 172 #if 0
 173         /*
 174          * This is seconds since the UN*X epoch, and is followed by
 175          * nanoseconds.  XXX - format it, rather than just dumping the
 176          * raw seconds-since-the-Epoch.
 177          */
 178         t = EXTRACT_32BITS(&nh->utc_sec);
 179 #endif
 180
 181         ND_PRINT((ndo, "NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
 182                EXTRACT_32BITS(&nh->msys_uptime)/1000,
 183                EXTRACT_32BITS(&nh->msys_uptime)%1000,
 184                EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec)));
 185
 186         nr = (const struct nfrec_v1 *)&nh[1];
 187
 188         ND_PRINT((ndo, "%2u recs", nrecs));
 189
 190         for (; nrecs != 0; nr++, nrecs--) {
 191                 char buf[20];
 192                 char asbuf[20];
 193
 194                 /*
 195                  * Make sure we have the entire record.
 196                  */
 197                 ND_TCHECK(*nr);
 198                 ND_PRINT((ndo, "\n  started %u.%03u, last %u.%03u",
 199                        EXTRACT_32BITS(&nr->start_time)/1000,
 200                        EXTRACT_32BITS(&nr->start_time)%1000,
 201                        EXTRACT_32BITS(&nr->last_time)/1000,
 202                        EXTRACT_32BITS(&nr->last_time)%1000));
 203
 204                 asbuf[0] = buf[0] = '\0';
 205                 ND_PRINT((ndo, "\n    %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf,
 206                         EXTRACT_16BITS(&nr->srcport)));
 207
 208                 ND_PRINT((ndo, "> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf,
 209                         EXTRACT_16BITS(&nr->dstport)));
 210
 211                 ND_PRINT((ndo, ">> %s\n    ", intoa(nr->nhop_ina.s_addr)));
 212
 213                 pent = getprotobynumber(nr->proto);
 214                 if (!pent || ndo->ndo_nflag)
 215                         ND_PRINT((ndo, "%u ", nr->proto));
 216                 else
 217                         ND_PRINT((ndo, "%s ", pent->p_name));
 218
 219                 /* tcp flags for tcp only */
 220                 if (pent && pent->p_proto == IPPROTO_TCP) {
 221                         int flags;
 222                         flags = nr->tcp_flags;
 223                         ND_PRINT((ndo, "%s%s%s%s%s%s%s",
 224                                 flags & TH_FIN  ? "F" : "",
 225                                 flags & TH_SYN  ? "S" : "",
 226                                 flags & TH_RST  ? "R" : "",
 227                                 flags & TH_PUSH ? "P" : "",
 228                                 flags & TH_ACK  ? "A" : "",
 229                                 flags & TH_URG  ? "U" : "",
 230                                 flags           ? " " : ""));
 231                 }
 232
 233                 buf[0]='\0';
 234                 ND_PRINT((ndo, "tos %u, %u (%u octets) %s",
 235                        nr->tos,
 236                        EXTRACT_32BITS(&nr->packets),
 237                        EXTRACT_32BITS(&nr->octets), buf));
 238         }
 239         return;
 240
 241 trunc:
 242         ND_PRINT((ndo, "[|cnfp]"));
 243         return;
 244 }
 245
 246 static void
 247 cnfp_v5_print(netdissect_options *ndo, const u_char *cp)
 248 {
 249         register const struct nfhdr_v5 *nh;
 250         register const struct nfrec_v5 *nr;
 251         struct protoent *pent;
 252         int nrecs, ver;
 253 #if 0
 254         time_t t;
 255 #endif
 256
 257         nh = (const struct nfhdr_v5 *)cp;
 258         ND_TCHECK(*nh);
 259
 260         ver = EXTRACT_16BITS(&nh->version);
 261         nrecs = EXTRACT_32BITS(&nh->count);
 262 #if 0
 263         /*
 264          * This is seconds since the UN*X epoch, and is followed by
 265          * nanoseconds.  XXX - format it, rather than just dumping the
 266          * raw seconds-since-the-Epoch.
 267          */
 268         t = EXTRACT_32BITS(&nh->utc_sec);
 269 #endif
 270
 271         ND_PRINT((ndo, "NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
 272                EXTRACT_32BITS(&nh->msys_uptime)/1000,
 273                EXTRACT_32BITS(&nh->msys_uptime)%1000,
 274                EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec)));
 275
 276         ND_PRINT((ndo, "#%u, ", EXTRACT_32BITS(&nh->sequence)));
 277         nr = (const struct nfrec_v5 *)&nh[1];
 278
 279         ND_PRINT((ndo, "%2u recs", nrecs));
 280
 281         for (; nrecs != 0; nr++, nrecs--) {
 282                 char buf[20];
 283                 char asbuf[20];
 284
 285                 /*
 286                  * Make sure we have the entire record.
 287                  */
 288                 ND_TCHECK(*nr);
 289                 ND_PRINT((ndo, "\n  started %u.%03u, last %u.%03u",
 290                        EXTRACT_32BITS(&nr->start_time)/1000,
 291                        EXTRACT_32BITS(&nr->start_time)%1000,
 292                        EXTRACT_32BITS(&nr->last_time)/1000,
 293                        EXTRACT_32BITS(&nr->last_time)%1000));
 294
 295                 asbuf[0] = buf[0] = '\0';
 296                 snprintf(buf, sizeof(buf), "/%u", nr->src_mask);
 297                 snprintf(asbuf, sizeof(asbuf), ":%u",
 298                         EXTRACT_16BITS(&nr->src_as));
 299                 ND_PRINT((ndo, "\n    %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf,
 300                         EXTRACT_16BITS(&nr->srcport)));
 301
 302                 snprintf(buf, sizeof(buf), "/%d", nr->dst_mask);
 303                 snprintf(asbuf, sizeof(asbuf), ":%u",
 304                          EXTRACT_16BITS(&nr->dst_as));
 305                 ND_PRINT((ndo, "> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf,
 306                         EXTRACT_16BITS(&nr->dstport)));
 307
 308                 ND_PRINT((ndo, ">> %s\n    ", intoa(nr->nhop_ina.s_addr)));
 309
 310                 pent = getprotobynumber(nr->proto);
 311                 if (!pent || ndo->ndo_nflag)
 312                         ND_PRINT((ndo, "%u ", nr->proto));
 313                 else
 314                         ND_PRINT((ndo, "%s ", pent->p_name));
 315
 316                 /* tcp flags for tcp only */
 317                 if (pent && pent->p_proto == IPPROTO_TCP) {
 318                         int flags;
 319                         flags = nr->tcp_flags;
 320                         ND_PRINT((ndo, "%s%s%s%s%s%s%s",
 321                                 flags & TH_FIN  ? "F" : "",
 322                                 flags & TH_SYN  ? "S" : "",
 323                                 flags & TH_RST  ? "R" : "",
 324                                 flags & TH_PUSH ? "P" : "",
 325                                 flags & TH_ACK  ? "A" : "",
 326                                 flags & TH_URG  ? "U" : "",
 327                                 flags           ? " " : ""));
 328                 }
 329
 330                 buf[0]='\0';
 331                 ND_PRINT((ndo, "tos %u, %u (%u octets) %s",
 332                        nr->tos,
 333                        EXTRACT_32BITS(&nr->packets),
 334                        EXTRACT_32BITS(&nr->octets), buf));
 335         }
 336         return;
 337
 338 trunc:
 339         ND_PRINT((ndo, "[|cnfp]"));
 340         return;
 341 }
 342
 343 static void
 344 cnfp_v6_print(netdissect_options *ndo, const u_char *cp)
 345 {
 346         register const struct nfhdr_v6 *nh;
 347         register const struct nfrec_v6 *nr;
 348         struct protoent *pent;
 349         int nrecs, ver;
 350 #if 0
 351         time_t t;
 352 #endif
 353
 354         nh = (const struct nfhdr_v6 *)cp;
 355         ND_TCHECK(*nh);
 356
 357         ver = EXTRACT_16BITS(&nh->version);
 358         nrecs = EXTRACT_32BITS(&nh->count);
 359 #if 0
 360         /*
 361          * This is seconds since the UN*X epoch, and is followed by
 362          * nanoseconds.  XXX - format it, rather than just dumping the
 363          * raw seconds-since-the-Epoch.
 364          */
 365         t = EXTRACT_32BITS(&nh->utc_sec);
 366 #endif
 367
 368         ND_PRINT((ndo, "NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
 369                EXTRACT_32BITS(&nh->msys_uptime)/1000,
 370                EXTRACT_32BITS(&nh->msys_uptime)%1000,
 371                EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec)));
 372
 373         ND_PRINT((ndo, "#%u, ", EXTRACT_32BITS(&nh->sequence)));
 374         nr = (const struct nfrec_v6 *)&nh[1];
 375
 376         ND_PRINT((ndo, "%2u recs", nrecs));
 377
 378         for (; nrecs != 0; nr++, nrecs--) {
 379                 char buf[20];
 380                 char asbuf[20];
 381
 382                 /*
 383                  * Make sure we have the entire record.
 384                  */
 385                 ND_TCHECK(*nr);
 386                 ND_PRINT((ndo, "\n  started %u.%03u, last %u.%03u",
 387                        EXTRACT_32BITS(&nr->start_time)/1000,
 388                        EXTRACT_32BITS(&nr->start_time)%1000,
 389                        EXTRACT_32BITS(&nr->last_time)/1000,
 390                        EXTRACT_32BITS(&nr->last_time)%1000));
 391
 392                 asbuf[0] = buf[0] = '\0';
 393                 snprintf(buf, sizeof(buf), "/%u", nr->src_mask);
 394                 snprintf(asbuf, sizeof(asbuf), ":%u",
 395                         EXTRACT_16BITS(&nr->src_as));
 396                 ND_PRINT((ndo, "\n    %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf,
 397                         EXTRACT_16BITS(&nr->srcport)));
 398
 399                 snprintf(buf, sizeof(buf), "/%d", nr->dst_mask);
 400                 snprintf(asbuf, sizeof(asbuf), ":%u",
 401                          EXTRACT_16BITS(&nr->dst_as));
 402                 ND_PRINT((ndo, "> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf,
 403                         EXTRACT_16BITS(&nr->dstport)));
 404
 405                 ND_PRINT((ndo, ">> %s\n    ", intoa(nr->nhop_ina.s_addr)));
 406
 407                 pent = getprotobynumber(nr->proto);
 408                 if (!pent || ndo->ndo_nflag)
 409                         ND_PRINT((ndo, "%u ", nr->proto));
 410                 else
 411                         ND_PRINT((ndo, "%s ", pent->p_name));
 412
 413                 /* tcp flags for tcp only */
 414                 if (pent && pent->p_proto == IPPROTO_TCP) {
 415                         int flags;
 416                         flags = nr->tcp_flags;
 417                         ND_PRINT((ndo, "%s%s%s%s%s%s%s",
 418                                 flags & TH_FIN  ? "F" : "",
 419                                 flags & TH_SYN  ? "S" : "",
 420                                 flags & TH_RST  ? "R" : "",
 421                                 flags & TH_PUSH ? "P" : "",
 422                                 flags & TH_ACK  ? "A" : "",
 423                                 flags & TH_URG  ? "U" : "",
 424                                 flags           ? " " : ""));
 425                 }
 426
 427                 buf[0]='\0';
 428                 snprintf(buf, sizeof(buf), "(%u<>%u encaps)",
 429                          (EXTRACT_16BITS(&nr->flags) >> 8) & 0xff,
 430                          (EXTRACT_16BITS(&nr->flags)) & 0xff);
 431                 ND_PRINT((ndo, "tos %u, %u (%u octets) %s",
 432                        nr->tos,
 433                        EXTRACT_32BITS(&nr->packets),
 434                        EXTRACT_32BITS(&nr->octets), buf));
 435         }
 436         return;
 437
 438 trunc:
 439         ND_PRINT((ndo, "[|cnfp]"));
 440         return;
 441 }
 442
 443 void
 444 cnfp_print(netdissect_options *ndo, const u_char *cp)
 445 {
 446         int ver;
 447
 448         /*
 449          * First 2 bytes are the version number.
 450          */
 451         ND_TCHECK2(*cp, 2);
 452         ver = EXTRACT_16BITS(cp);
 453         switch (ver) {
 454
 455         case 1:
 456                 cnfp_v1_print(ndo, cp);
 457                 break;
 458
 459         case 5:
 460                 cnfp_v5_print(ndo, cp);
 461                 break;
 462
 463         case 6:
 464                 cnfp_v6_print(ndo, cp);
 465                 break;
 466
 467         default:
 468                 ND_PRINT((ndo, "NetFlow v%x", ver));
 469                 break;
 470         }
 471         return;
 472
 473 trunc:
 474         ND_PRINT((ndo, "[|cnfp]"));
 475         return;
 476 }