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  *     https://web.archive.org/web/20150302152944/http://tipc.sourceforge.net/doc/draft-spec-tipc-07.html
  27  *     https://web.archive.org/web/20161025110514/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
  41 #define TIPC_USER_LOW_IMPORTANCE        0
  42 #define TIPC_USER_MEDIUM_IMPORTANCE     1
  43 #define TIPC_USER_HIGH_IMPORTANCE       2
  44 #define TIPC_USER_CRITICAL_IMPORTANCE   3
  45 #define TIPC_USER_BCAST_PROTOCOL        5
  46 #define TIPC_USER_MSG_BUNDLER           6
  47 #define TIPC_USER_LINK_PROTOCOL         7
  48 #define TIPC_USER_CONN_MANAGER          8
  49 #define TIPC_USER_CHANGEOVER_PROTOCOL   10
  50 #define TIPC_USER_NAME_DISTRIBUTOR      11
  51 #define TIPC_USER_MSG_FRAGMENTER        12
  52 #define TIPC_USER_LINK_CONFIG           13
  53
  54 #define TIPC_CONN_MSG                   0
  55 #define TIPC_DIRECT_MSG                 1
  56 #define TIPC_NAMED_MSG                  2
  57 #define TIPC_MCAST_MSG                  3
  58
  59 #define TIPC_ZONE(addr)         (((addr) >> 24) & 0xFF)
  60 #define TIPC_CLUSTER(addr)      (((addr) >> 12) & 0xFFF)
  61 #define TIPC_NODE(addr)         (((addr) >> 0) & 0xFFF)
  62
  63 struct tipc_pkthdr {
  64         nd_uint32_t w0;
  65         nd_uint32_t w1;
  66 };
  67
  68 #define TIPC_VER(w0)            (((w0) >> 29) & 0x07)
  69 #define TIPC_USER(w0)           (((w0) >> 25) & 0x0F)
  70 #define TIPC_HSIZE(w0)          (((w0) >> 21) & 0x0F)
  71 #define TIPC_MSIZE(w0)          (((w0) >> 0) & 0x1FFFF)
  72 #define TIPC_MTYPE(w1)          (((w1) >> 29) & 0x07)
  73 #define TIPC_BROADCAST_ACK(w1)  (((w1) >> 0) & 0xFFFF)
  74 #define TIPC_LINK_ACK(w2)       (((w2) >> 16) & 0xFFFF)
  75 #define TIPC_LINK_SEQ(w2)       (((w2) >> 0) & 0xFFFF)
  76
  77 static const struct tok tipcuser_values[] = {
  78     { TIPC_USER_LOW_IMPORTANCE,      "Low Importance Data payload" },
  79     { TIPC_USER_MEDIUM_IMPORTANCE,   "Medium Importance Data payload" },
  80     { TIPC_USER_HIGH_IMPORTANCE,     "High Importance Data payload" },
  81     { TIPC_USER_CRITICAL_IMPORTANCE, "Critical Importance Data payload" },
  82     { TIPC_USER_BCAST_PROTOCOL,      "Broadcast Link Protocol internal" },
  83     { TIPC_USER_MSG_BUNDLER,         "Message Bundler Protocol internal" },
  84     { TIPC_USER_LINK_PROTOCOL,       "Link State Protocol internal" },
  85     { TIPC_USER_CONN_MANAGER,        "Connection Manager internal" },
  86     { TIPC_USER_CHANGEOVER_PROTOCOL, "Link Changeover Protocol internal" },
  87     { TIPC_USER_NAME_DISTRIBUTOR,    "Name Table Update Protocol internal" },
  88     { TIPC_USER_MSG_FRAGMENTER,      "Message Fragmentation Protocol internal" },
  89     { TIPC_USER_LINK_CONFIG,         "Neighbor Detection Protocol internal" },
  90     { 0, NULL }
  91 };
  92
  93 static const struct tok tipcmtype_values[] = {
  94     { TIPC_CONN_MSG,   "CONN_MSG" },
  95     { TIPC_DIRECT_MSG, "MCAST_MSG" },
  96     { TIPC_NAMED_MSG,  "NAMED_MSG" },
  97     { TIPC_MCAST_MSG,  "DIRECT_MSG" },
  98     { 0, NULL }
  99 };
 100
 101 static const struct tok tipc_linkconf_mtype_values[] = {
 102     { 0,   "Link request" },
 103     { 1,   "Link response" },
 104     { 0, NULL }
 105 };
 106
 107 struct payload_tipc_pkthdr {
 108         nd_uint32_t w0;
 109         nd_uint32_t w1;
 110         nd_uint32_t w2;
 111         nd_uint32_t prev_node;
 112         nd_uint32_t orig_port;
 113         nd_uint32_t dest_port;
 114         nd_uint32_t orig_node;
 115         nd_uint32_t dest_node;
 116         nd_uint32_t name_type;
 117         nd_uint32_t w9;
 118         nd_uint32_t wA;
 119 };
 120
 121 struct  internal_tipc_pkthdr {
 122         nd_uint32_t w0;
 123         nd_uint32_t w1;
 124         nd_uint32_t w2;
 125         nd_uint32_t prev_node;
 126         nd_uint32_t w4;
 127         nd_uint32_t w5;
 128         nd_uint32_t orig_node;
 129         nd_uint32_t dest_node;
 130         nd_uint32_t trans_seq;
 131         nd_uint32_t w9;
 132 };
 133
 134 #define TIPC_SEQ_GAP(w1)        (((w1) >> 16) & 0x1FFF)
 135 #define TIPC_BC_GAP_AFTER(w2)   (((w2) >> 16) & 0xFFFF)
 136 #define TIPC_BC_GAP_TO(w2)      (((w2) >> 0) & 0xFFFF)
 137 #define TIPC_LAST_SENT_FRAG(w4) (((w4) >> 16) & 0xFFFF)
 138 #define TIPC_NEXT_SENT_FRAG(w4) (((w4) >> 0) & 0xFFFF)
 139 #define TIPC_SESS_NO(w5)        (((w5) >> 16) & 0xFFFF)
 140 #define TIPC_MSG_CNT(w9)        (((w9) >> 16) & 0xFFFF)
 141 #define TIPC_LINK_TOL(w9)       (((w9) >> 0) & 0xFFFF)
 142
 143 struct link_conf_tipc_pkthdr {
 144         nd_uint32_t w0;
 145         nd_uint32_t w1;
 146         nd_uint32_t dest_domain;
 147         nd_uint32_t prev_node;
 148         nd_uint32_t ntwrk_id;
 149         nd_uint32_t w5;
 150         nd_byte     media_address[16];
 151 };
 152
 153 #define TIPC_NODE_SIG(w1)       (((w1) >> 0) & 0xFFFF)
 154 #define TIPC_MEDIA_ID(w5)       (((w5) >> 0) & 0xFF)
 155
 156 static void
 157 print_payload(netdissect_options *ndo, const struct payload_tipc_pkthdr *ap)
 158 {
 159         uint32_t w0, w1, w2;
 160         u_int user;
 161         u_int hsize;
 162         u_int msize;
 163         u_int mtype;
 164         u_int broadcast_ack;
 165         u_int link_ack;
 166         u_int link_seq;
 167         u_int prev_node;
 168         u_int orig_port;
 169         u_int dest_port;
 170         u_int orig_node;
 171         u_int dest_node;
 172
 173         ND_TCHECK_4(ap->dest_port);
 174         w0 = GET_BE_U_4(ap->w0);
 175         user = TIPC_USER(w0);
 176         hsize = TIPC_HSIZE(w0);
 177         msize = TIPC_MSIZE(w0);
 178         w1 = GET_BE_U_4(ap->w1);
 179         mtype = TIPC_MTYPE(w1);
 180         prev_node = GET_BE_U_4(ap->prev_node);
 181         orig_port = GET_BE_U_4(ap->orig_port);
 182         dest_port = GET_BE_U_4(ap->dest_port);
 183         if (hsize <= 6) {
 184                 ND_PRINT("TIPC v%u.0 %u.%u.%u:%u > %u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
 185                     TIPC_VER(w0),
 186                     TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 187                     orig_port, dest_port,
 188                     hsize*4, msize,
 189                     tok2str(tipcuser_values, "unknown", user),
 190                     tok2str(tipcmtype_values, "Unknown", mtype));
 191         } else {
 192                 orig_node = GET_BE_U_4(ap->orig_node);
 193                 dest_node = GET_BE_U_4(ap->dest_node);
 194                 ND_PRINT("TIPC v%u.0 %u.%u.%u:%u > %u.%u.%u:%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
 195                     TIPC_VER(w0),
 196                     TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
 197                     orig_port,
 198                     TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
 199                     dest_port,
 200                     hsize*4, msize,
 201                     tok2str(tipcuser_values, "unknown", user),
 202                     tok2str(tipcmtype_values, "Unknown", mtype));
 203
 204                 if (ndo->ndo_vflag) {
 205                         broadcast_ack = TIPC_BROADCAST_ACK(w1);
 206                         w2 = GET_BE_U_4(ap->w2);
 207                         link_ack = TIPC_LINK_ACK(w2);
 208                         link_seq = TIPC_LINK_SEQ(w2);
 209                         ND_PRINT("\n\tPrevious Node %u.%u.%u, Broadcast Ack %u, Link Ack %u, Link Sequence %u",
 210                             TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 211                             broadcast_ack, link_ack, link_seq);
 212                 }
 213         }
 214         return;
 215
 216 trunc:
 217         nd_print_trunc(ndo);
 218 }
 219
 220 static void
 221 print_internal(netdissect_options *ndo, const struct internal_tipc_pkthdr *ap)
 222 {
 223         uint32_t w0, w1, w2, w4, w5, w9;
 224         u_int user;
 225         u_int hsize;
 226         u_int msize;
 227         u_int mtype;
 228         u_int seq_gap;
 229         u_int broadcast_ack;
 230         u_int bc_gap_after;
 231         u_int bc_gap_to;
 232         u_int prev_node;
 233         u_int last_sent_frag;
 234         u_int next_sent_frag;
 235         u_int sess_no;
 236         u_int orig_node;
 237         u_int dest_node;
 238         u_int trans_seq;
 239         u_int msg_cnt;
 240         u_int link_tol;
 241
 242         ND_TCHECK_4(ap->dest_node);
 243         w0 = GET_BE_U_4(ap->w0);
 244         user = TIPC_USER(w0);
 245         hsize = TIPC_HSIZE(w0);
 246         msize = TIPC_MSIZE(w0);
 247         w1 = GET_BE_U_4(ap->w1);
 248         mtype = TIPC_MTYPE(w1);
 249         orig_node = GET_BE_U_4(ap->orig_node);
 250         dest_node = GET_BE_U_4(ap->dest_node);
 251         ND_PRINT("TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s (0x%08x)",
 252             TIPC_VER(w0),
 253             TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
 254             TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
 255             hsize*4, msize,
 256             tok2str(tipcuser_values, "unknown", user),
 257             tok2str(tipcmtype_values, "Unknown", mtype), w1);
 258
 259         if (ndo->ndo_vflag) {
 260                 ND_TCHECK_SIZE(ap);
 261                 seq_gap = TIPC_SEQ_GAP(w1);
 262                 broadcast_ack = TIPC_BROADCAST_ACK(w1);
 263                 w2 = GET_BE_U_4(ap->w2);
 264                 bc_gap_after = TIPC_BC_GAP_AFTER(w2);
 265                 bc_gap_to = TIPC_BC_GAP_TO(w2);
 266                 prev_node = GET_BE_U_4(ap->prev_node);
 267                 w4 = GET_BE_U_4(ap->w4);
 268                 last_sent_frag = TIPC_LAST_SENT_FRAG(w4);
 269                 next_sent_frag = TIPC_NEXT_SENT_FRAG(w4);
 270                 w5 = GET_BE_U_4(ap->w5);
 271                 sess_no = TIPC_SESS_NO(w5);
 272                 trans_seq = GET_BE_U_4(ap->trans_seq);
 273                 w9 = GET_BE_U_4(ap->w9);
 274                 msg_cnt = TIPC_MSG_CNT(w9);
 275                 link_tol = TIPC_LINK_TOL(w9);
 276                 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",
 277                     TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 278                     sess_no, broadcast_ack, seq_gap, bc_gap_after, bc_gap_to,
 279                     last_sent_frag, next_sent_frag, trans_seq, msg_cnt,
 280                     link_tol);
 281         }
 282         return;
 283
 284 trunc:
 285         nd_print_trunc(ndo);
 286 }
 287
 288 static void
 289 print_link_conf(netdissect_options *ndo, const struct link_conf_tipc_pkthdr *ap)
 290 {
 291         uint32_t w0, w1, w5;
 292         u_int user;
 293         u_int hsize;
 294         u_int msize;
 295         u_int mtype;
 296         u_int node_sig;
 297         u_int prev_node;
 298         u_int dest_domain;
 299         u_int ntwrk_id;
 300         u_int media_id;
 301
 302         ND_TCHECK_4(ap->prev_node);
 303         w0 = GET_BE_U_4(ap->w0);
 304         user = TIPC_USER(w0);
 305         hsize = TIPC_HSIZE(w0);
 306         msize = TIPC_MSIZE(w0);
 307         w1 = GET_BE_U_4(ap->w1);
 308         mtype = TIPC_MTYPE(w1);
 309         dest_domain = GET_BE_U_4(ap->dest_domain);
 310         prev_node = GET_BE_U_4(ap->prev_node);
 311
 312         ND_PRINT("TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
 313             TIPC_VER(w0),
 314             TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 315             TIPC_ZONE(dest_domain), TIPC_CLUSTER(dest_domain), TIPC_NODE(dest_domain),
 316             hsize*4, msize,
 317             tok2str(tipcuser_values, "unknown", user),
 318             tok2str(tipc_linkconf_mtype_values, "Unknown", mtype));
 319         if (ndo->ndo_vflag) {
 320                 node_sig = TIPC_NODE_SIG(w1);
 321                 ntwrk_id = GET_BE_U_4(ap->ntwrk_id);
 322                 w5 = GET_BE_U_4(ap->w5);
 323                 media_id = TIPC_MEDIA_ID(w5);
 324                 ND_PRINT("\n\tNodeSignature %u, network_id %u, media_id %u",
 325                     node_sig, ntwrk_id, media_id);
 326         }
 327         return;
 328
 329 trunc:
 330         nd_print_trunc(ndo);
 331 }
 332
 333 void
 334 tipc_print(netdissect_options *ndo, const u_char *bp, u_int length _U_,
 335     u_int caplen _U_)
 336 {
 337         const struct tipc_pkthdr *ap;
 338         uint32_t w0;
 339         u_int user;
 340
 341         ndo->ndo_protocol = "tipc";
 342         ap = (const struct tipc_pkthdr *)bp;
 343         w0 = GET_BE_U_4(ap->w0);
 344         user = TIPC_USER(w0);
 345
 346         switch (user)
 347         {
 348                 case TIPC_USER_LOW_IMPORTANCE:
 349                 case TIPC_USER_MEDIUM_IMPORTANCE:
 350                 case TIPC_USER_HIGH_IMPORTANCE:
 351                 case TIPC_USER_CRITICAL_IMPORTANCE:
 352                 case TIPC_USER_NAME_DISTRIBUTOR:
 353                 case TIPC_USER_CONN_MANAGER:
 354                         print_payload(ndo, (const struct payload_tipc_pkthdr *)bp);
 355                         break;
 356
 357                 case TIPC_USER_LINK_CONFIG:
 358                         print_link_conf(ndo, (const struct link_conf_tipc_pkthdr *)bp);
 359                         break;
 360
 361                 case TIPC_USER_BCAST_PROTOCOL:
 362                 case TIPC_USER_MSG_BUNDLER:
 363                 case TIPC_USER_LINK_PROTOCOL:
 364                 case TIPC_USER_CHANGEOVER_PROTOCOL:
 365                 case TIPC_USER_MSG_FRAGMENTER:
 366                         print_internal(ndo, (const struct internal_tipc_pkthdr *)bp);
 367                         break;
 368
 369         }
 370 }