The Tcpdump Group git mirrors - tcpdump/blob - print-tipc.c

   1 /*
   2  * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that: (1) source code distributions
   7  * retain the above copyright notice and this paragraph in its entirety, (2)
   8  * distributions including binary code include the above copyright notice and
   9  * this paragraph in its entirety in the documentation or other materials
  10  * provided with the distribution, and (3) all advertising materials mentioning
  11  * features or use of this software display the following acknowledgement:
  12  * ``This product includes software developed by the University of California,
  13  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  14  * the University nor the names of its contributors may be used to endorse
  15  * or promote products derived from this software without specific prior
  16  * written permission.
  17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  20  */
  21
  22 /* \summary: Transparent Inter-Process Communication (TIPC) protocol printer */
  23
  24 /*
  25  * specification:
  26  *      http://tipc.sourceforge.net/doc/draft-spec-tipc-07.html
  27  *      http://tipc.sourceforge.net/doc/tipc_message_formats.html
  28  */
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include <config.h>
  32 #endif
  33
  34 #include "netdissect-stdinc.h"
  35
  36 #include "netdissect.h"
  37 #include "ethertype.h"
  38 #include "extract.h"
  39
  40 static const char tstr[] = "[|TIPC]";
  41
  42 #define TIPC_USER_LOW_IMPORTANCE        0
  43 #define TIPC_USER_MEDIUM_IMPORTANCE     1
  44 #define TIPC_USER_HIGH_IMPORTANCE       2
  45 #define TIPC_USER_CRITICAL_IMPORTANCE   3
  46 #define TIPC_USER_BCAST_PROTOCOL        5
  47 #define TIPC_USER_MSG_BUNDLER           6
  48 #define TIPC_USER_LINK_PROTOCOL         7
  49 #define TIPC_USER_CONN_MANAGER          8
  50 #define TIPC_USER_CHANGEOVER_PROTOCOL   10
  51 #define TIPC_USER_NAME_DISTRIBUTOR      11
  52 #define TIPC_USER_MSG_FRAGMENTER        12
  53 #define TIPC_USER_LINK_CONFIG           13
  54
  55 #define TIPC_CONN_MSG                   0
  56 #define TIPC_DIRECT_MSG                 1
  57 #define TIPC_NAMED_MSG                  2
  58 #define TIPC_MCAST_MSG                  3
  59
  60 #define TIPC_ZONE(addr)         (((addr) >> 24) & 0xFF)
  61 #define TIPC_CLUSTER(addr)      (((addr) >> 12) & 0xFFF)
  62 #define TIPC_NODE(addr)         (((addr) >> 0) & 0xFFF)
  63
  64 struct tipc_pkthdr {
  65         nd_uint32_t w0;
  66         nd_uint32_t w1;
  67 };
  68
  69 #define TIPC_VER(w0)            (((w0) >> 29) & 0x07)
  70 #define TIPC_USER(w0)           (((w0) >> 25) & 0x0F)
  71 #define TIPC_HSIZE(w0)          (((w0) >> 21) & 0x0F)
  72 #define TIPC_MSIZE(w0)          (((w0) >> 0) & 0xFFFF)
  73 #define TIPC_MTYPE(w1)          (((w1) >> 29) & 0x07)
  74 #define TIPC_BROADCAST_ACK(w1)  (((w1) >> 0) & 0xFFFF)
  75 #define TIPC_LINK_ACK(w2)       (((w2) >> 16) & 0xFFFF)
  76 #define TIPC_LINK_SEQ(w2)       (((w2) >> 0) & 0xFFFF)
  77
  78 static const struct tok tipcuser_values[] = {
  79     { TIPC_USER_LOW_IMPORTANCE,      "Low Importance Data payload" },
  80     { TIPC_USER_MEDIUM_IMPORTANCE,   "Medium Importance Data payload" },
  81     { TIPC_USER_HIGH_IMPORTANCE,     "High Importance Data payload" },
  82     { TIPC_USER_CRITICAL_IMPORTANCE, "Critical Importance Data payload" },
  83     { TIPC_USER_BCAST_PROTOCOL,      "Broadcast Link Protocol internal" },
  84     { TIPC_USER_MSG_BUNDLER,         "Message Bundler Protocol internal" },
  85     { TIPC_USER_LINK_PROTOCOL,       "Link State Protocol internal" },
  86     { TIPC_USER_CONN_MANAGER,        "Connection Manager internal" },
  87     { TIPC_USER_CHANGEOVER_PROTOCOL, "Link Changeover Protocol internal" },
  88     { TIPC_USER_NAME_DISTRIBUTOR,    "Name Table Update Protocol internal" },
  89     { TIPC_USER_MSG_FRAGMENTER,      "Message Fragmentation Protocol internal" },
  90     { TIPC_USER_LINK_CONFIG,         "Neighbor Detection Protocol internal" },
  91     { 0, NULL }
  92 };
  93
  94 static const struct tok tipcmtype_values[] = {
  95     { TIPC_CONN_MSG,   "CONN_MSG" },
  96     { TIPC_DIRECT_MSG, "MCAST_MSG" },
  97     { TIPC_NAMED_MSG,  "NAMED_MSG" },
  98     { TIPC_MCAST_MSG,  "DIRECT_MSG" },
  99     { 0, NULL }
 100 };
 101
 102 static const struct tok tipc_linkconf_mtype_values[] = {
 103     { 0,   "Link request" },
 104     { 1,   "Link response" },
 105     { 0, NULL }
 106 };
 107
 108 struct payload_tipc_pkthdr {
 109         nd_uint32_t w0;
 110         nd_uint32_t w1;
 111         nd_uint32_t w2;
 112         nd_uint32_t prev_node;
 113         nd_uint32_t orig_port;
 114         nd_uint32_t dest_port;
 115         nd_uint32_t orig_node;
 116         nd_uint32_t dest_node;
 117         nd_uint32_t name_type;
 118         nd_uint32_t w9;
 119         nd_uint32_t wA;
 120 };
 121
 122 struct  internal_tipc_pkthdr {
 123         nd_uint32_t w0;
 124         nd_uint32_t w1;
 125         nd_uint32_t w2;
 126         nd_uint32_t prev_node;
 127         nd_uint32_t w4;
 128         nd_uint32_t w5;
 129         nd_uint32_t orig_node;
 130         nd_uint32_t dest_node;
 131         nd_uint32_t trans_seq;
 132         nd_uint32_t w9;
 133 };
 134
 135 #define TIPC_SEQ_GAP(w1)        (((w1) >> 16) & 0x1FFF)
 136 #define TIPC_BC_GAP_AFTER(w2)   (((w2) >> 16) & 0xFFFF)
 137 #define TIPC_BC_GAP_TO(w2)      (((w2) >> 0) & 0xFFFF)
 138 #define TIPC_LAST_SENT_FRAG(w4) (((w4) >> 16) & 0xFFFF)
 139 #define TIPC_NEXT_SENT_FRAG(w4) (((w4) >> 0) & 0xFFFF)
 140 #define TIPC_SESS_NO(w5)        (((w5) >> 16) & 0xFFFF)
 141 #define TIPC_MSG_CNT(w9)        (((w9) >> 16) & 0xFFFF)
 142 #define TIPC_LINK_TOL(w9)       (((w9) >> 0) & 0xFFFF)
 143
 144 struct link_conf_tipc_pkthdr {
 145         nd_uint32_t w0;
 146         nd_uint32_t w1;
 147         nd_uint32_t dest_domain;
 148         nd_uint32_t prev_node;
 149         nd_uint32_t ntwrk_id;
 150         nd_uint32_t w5;
 151         nd_byte     media_address[16];
 152 };
 153
 154 #define TIPC_NODE_SIG(w1)       (((w1) >> 0) & 0xFFFF)
 155 #define TIPC_MEDIA_ID(w5)       (((w5) >> 0) & 0xFF)
 156
 157 static void
 158 print_payload(netdissect_options *ndo, const struct payload_tipc_pkthdr *ap)
 159 {
 160         uint32_t w0, w1, w2;
 161         u_int user;
 162         u_int hsize;
 163         u_int msize;
 164         u_int mtype;
 165         u_int broadcast_ack;
 166         u_int link_ack;
 167         u_int link_seq;
 168         u_int prev_node;
 169         u_int orig_port;
 170         u_int dest_port;
 171         u_int orig_node;
 172         u_int dest_node;
 173
 174         ND_TCHECK_4(ap->dest_port);
 175         w0 = EXTRACT_BE_U_4(ap->w0);
 176         user = TIPC_USER(w0);
 177         hsize = TIPC_HSIZE(w0);
 178         msize = TIPC_MSIZE(w0);
 179         w1 = EXTRACT_BE_U_4(ap->w1);
 180         mtype = TIPC_MTYPE(w1);
 181         prev_node = EXTRACT_BE_U_4(ap->prev_node);
 182         orig_port = EXTRACT_BE_U_4(ap->orig_port);
 183         dest_port = EXTRACT_BE_U_4(ap->dest_port);
 184         if (hsize <= 6) {
 185                 ND_PRINT("TIPC v%u.0 %u.%u.%u:%u > %u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
 186                     TIPC_VER(w0),
 187                     TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 188                     orig_port, dest_port,
 189                     hsize*4, msize,
 190                     tok2str(tipcuser_values, "unknown", user),
 191                     tok2str(tipcmtype_values, "Unknown", mtype));
 192         } else {
 193                 ND_TCHECK_4(ap->dest_node);
 194                 orig_node = EXTRACT_BE_U_4(ap->orig_node);
 195                 dest_node = EXTRACT_BE_U_4(ap->dest_node);
 196                 ND_PRINT("TIPC v%u.0 %u.%u.%u:%u > %u.%u.%u:%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
 197                     TIPC_VER(w0),
 198                     TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
 199                     orig_port,
 200                     TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
 201                     dest_port,
 202                     hsize*4, msize,
 203                     tok2str(tipcuser_values, "unknown", user),
 204                     tok2str(tipcmtype_values, "Unknown", mtype));
 205
 206                 if (ndo->ndo_vflag) {
 207                         broadcast_ack = TIPC_BROADCAST_ACK(w1);
 208                         w2 = EXTRACT_BE_U_4(ap->w2);
 209                         link_ack = TIPC_LINK_ACK(w2);
 210                         link_seq = TIPC_LINK_SEQ(w2);
 211                         ND_PRINT("\n\tPrevious Node %u.%u.%u, Broadcast Ack %u, Link Ack %u, Link Sequence %u",
 212                             TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 213                             broadcast_ack, link_ack, link_seq);
 214                 }
 215         }
 216         return;
 217
 218 trunc:
 219         ND_PRINT("%s", tstr);
 220 }
 221
 222 static void
 223 print_internal(netdissect_options *ndo, const struct internal_tipc_pkthdr *ap)
 224 {
 225         uint32_t w0, w1, w2, w4, w5, w9;
 226         u_int user;
 227         u_int hsize;
 228         u_int msize;
 229         u_int mtype;
 230         u_int seq_gap;
 231         u_int broadcast_ack;
 232         u_int bc_gap_after;
 233         u_int bc_gap_to;
 234         u_int prev_node;
 235         u_int last_sent_frag;
 236         u_int next_sent_frag;
 237         u_int sess_no;
 238         u_int orig_node;
 239         u_int dest_node;
 240         u_int trans_seq;
 241         u_int msg_cnt;
 242         u_int link_tol;
 243
 244         ND_TCHECK_4(ap->dest_node);
 245         w0 = EXTRACT_BE_U_4(ap->w0);
 246         user = TIPC_USER(w0);
 247         hsize = TIPC_HSIZE(w0);
 248         msize = TIPC_MSIZE(w0);
 249         w1 = EXTRACT_BE_U_4(ap->w1);
 250         mtype = TIPC_MTYPE(w1);
 251         orig_node = EXTRACT_BE_U_4(ap->orig_node);
 252         dest_node = EXTRACT_BE_U_4(ap->dest_node);
 253         ND_PRINT("TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s (0x%08x)",
 254             TIPC_VER(w0),
 255             TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
 256             TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
 257             hsize*4, msize,
 258             tok2str(tipcuser_values, "unknown", user),
 259             tok2str(tipcmtype_values, "Unknown", mtype), w1);
 260
 261         if (ndo->ndo_vflag) {
 262                 ND_TCHECK_SIZE(ap);
 263                 seq_gap = TIPC_SEQ_GAP(w1);
 264                 broadcast_ack = TIPC_BROADCAST_ACK(w1);
 265                 w2 = EXTRACT_BE_U_4(ap->w2);
 266                 bc_gap_after = TIPC_BC_GAP_AFTER(w2);
 267                 bc_gap_to = TIPC_BC_GAP_TO(w2);
 268                 prev_node = EXTRACT_BE_U_4(ap->prev_node);
 269                 w4 = EXTRACT_BE_U_4(ap->w4);
 270                 last_sent_frag = TIPC_LAST_SENT_FRAG(w4);
 271                 next_sent_frag = TIPC_NEXT_SENT_FRAG(w4);
 272                 w5 = EXTRACT_BE_U_4(ap->w5);
 273                 sess_no = TIPC_SESS_NO(w5);
 274                 trans_seq = EXTRACT_BE_U_4(ap->trans_seq);
 275                 w9 = EXTRACT_BE_U_4(ap->w9);
 276                 msg_cnt = TIPC_MSG_CNT(w9);
 277                 link_tol = TIPC_LINK_TOL(w9);
 278                 ND_PRINT("\n\tPrevious Node %u.%u.%u, Session No. %u, Broadcast Ack %u, Sequence Gap %u,  Broadcast Gap After %u, Broadcast Gap To %u, Last Sent Packet No. %u, Next sent Packet No. %u, Transport Sequence %u, msg_count %u, Link Tolerance %u",
 279                     TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 280                     sess_no, broadcast_ack, seq_gap, bc_gap_after, bc_gap_to,
 281                     last_sent_frag, next_sent_frag, trans_seq, msg_cnt,
 282                     link_tol);
 283         }
 284         return;
 285
 286 trunc:
 287         ND_PRINT("%s", tstr);
 288 }
 289
 290 static void
 291 print_link_conf(netdissect_options *ndo, const struct link_conf_tipc_pkthdr *ap)
 292 {
 293         uint32_t w0, w1, w5;
 294         u_int user;
 295         u_int hsize;
 296         u_int msize;
 297         u_int mtype;
 298         u_int node_sig;
 299         u_int prev_node;
 300         u_int dest_domain;
 301         u_int ntwrk_id;
 302         u_int media_id;
 303
 304         ND_TCHECK_4(ap->prev_node);
 305         w0 = EXTRACT_BE_U_4(ap->w0);
 306         user = TIPC_USER(w0);
 307         hsize = TIPC_HSIZE(w0);
 308         msize = TIPC_MSIZE(w0);
 309         w1 = EXTRACT_BE_U_4(ap->w1);
 310         mtype = TIPC_MTYPE(w1);
 311         dest_domain = EXTRACT_BE_U_4(ap->dest_domain);
 312         prev_node = EXTRACT_BE_U_4(ap->prev_node);
 313
 314         ND_PRINT("TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
 315             TIPC_VER(w0),
 316             TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 317             TIPC_ZONE(dest_domain), TIPC_CLUSTER(dest_domain), TIPC_NODE(dest_domain),
 318             hsize*4, msize,
 319             tok2str(tipcuser_values, "unknown", user),
 320             tok2str(tipc_linkconf_mtype_values, "Unknown", mtype));
 321         if (ndo->ndo_vflag) {
 322                 ND_TCHECK_4(ap->w5);
 323                 node_sig = TIPC_NODE_SIG(w1);
 324                 ntwrk_id = EXTRACT_BE_U_4(ap->ntwrk_id);
 325                 w5 = EXTRACT_BE_U_4(ap->w5);
 326                 media_id = TIPC_MEDIA_ID(w5);
 327                 ND_PRINT("\n\tNodeSignature %u, network_id %u, media_id %u",
 328                     node_sig, ntwrk_id, media_id);
 329         }
 330         return;
 331
 332 trunc:
 333         ND_PRINT("%s", tstr);
 334 }
 335
 336 void
 337 tipc_print(netdissect_options *ndo, const u_char *bp, u_int length _U_,
 338     u_int caplen _U_)
 339 {
 340         const struct tipc_pkthdr *ap;
 341         uint32_t w0;
 342         u_int user;
 343
 344         ndo->ndo_protocol = "tipc";
 345         ap = (const struct tipc_pkthdr *)bp;
 346         ND_TCHECK_4(ap->w0);
 347         w0 = EXTRACT_BE_U_4(ap->w0);
 348         user = TIPC_USER(w0);
 349
 350         switch (user)
 351         {
 352                 case TIPC_USER_LOW_IMPORTANCE:
 353                 case TIPC_USER_MEDIUM_IMPORTANCE:
 354                 case TIPC_USER_HIGH_IMPORTANCE:
 355                 case TIPC_USER_CRITICAL_IMPORTANCE:
 356                 case TIPC_USER_NAME_DISTRIBUTOR:
 357                 case TIPC_USER_CONN_MANAGER:
 358                         print_payload(ndo, (const struct payload_tipc_pkthdr *)bp);
 359                         break;
 360
 361                 case TIPC_USER_LINK_CONFIG:
 362                         print_link_conf(ndo, (const struct link_conf_tipc_pkthdr *)bp);
 363                         break;
 364
 365                 case TIPC_USER_BCAST_PROTOCOL:
 366                 case TIPC_USER_MSG_BUNDLER:
 367                 case TIPC_USER_LINK_PROTOCOL:
 368                 case TIPC_USER_CHANGEOVER_PROTOCOL:
 369                 case TIPC_USER_MSG_FRAGMENTER:
 370                         print_internal(ndo, (const struct internal_tipc_pkthdr *)bp);
 371                         break;
 372
 373         }
 374         return;
 375
 376 trunc:
 377         ND_PRINT("%s", tstr);
 378 }
 379
 380 /*
 381  * Local Variables:
 382  * c-style: bsd
 383  * End:
 384  */
 385