epan/dissectors/packet-t125.c

   1 /* Do not modify this file. Changes will be overwritten.                      */
   2 /* Generated automatically by the ASN.1 to Wireshark dissector compiler       */
   3 /* packet-t125.c                                                              */
   4 /* asn2wrs.py -b -q -L -p t125 -c ./t125.cnf -s ./packet-t125-template -D . -O ../.. MCS-PROTOCOL.asn */
   5
   6 /* packet-t125.c
   7  * Routines for t125 packet dissection
   8  * Copyright 2007, Ronnie Sahlberg
   9  *
  10  * Wireshark - Network traffic analyzer
  11  * By Gerald Combs <gerald@wireshark.org>
  12  * Copyright 1998 Gerald Combs
  13  *
  14  * SPDX-License-Identifier: GPL-2.0-or-later
  15  *
  16  */
  17
  18 #include "config.h"
  19
  20 #include <epan/packet.h>
  21 #include <epan/exceptions.h>
  22 #include <wsutil/array.h>
  23
  24 #include <epan/asn1.h>
  25 #include "packet-ber.h"
  26 #include "packet-per.h"
  27
  28 #include "packet-t124.h"
  29
  30 #define PNAME  "MULTIPOINT-COMMUNICATION-SERVICE T.125"
  31 #define PSNAME "T.125"
  32 #define PFNAME "t125"
  33
  34
  35 #define HF_T125_ERECT_DOMAIN_REQUEST 1
  36 #define HF_T125_DISCONNECT_PROVIDER_ULTIMATUM 8
  37 #define HF_T125_ATTACH_USER_REQUEST 10
  38 #define HF_T125_ATTACH_USER_CONFIRM 11
  39 #define HF_T125_CHANNEL_JOIN_REQUEST 14
  40 #define HF_T125_CHANNEL_JOIN_CONFIRM 15
  41 #define HF_T125_SEND_DATA_REQUEST 25
  42 #define HF_T125_SEND_DATA_INDICATION 26
  43
  44 void proto_register_t125(void);
  45 void proto_reg_handoff_t125(void);
  46
  47 /* Initialize the protocol and registered fields */
  48 static int proto_t125;
  49 static proto_tree *top_tree;
  50 static int hf_t125_ConnectMCSPDU_PDU;             /* ConnectMCSPDU */
  51 static int hf_t125_maxChannelIds;                 /* INTEGER_0_MAX */
  52 static int hf_t125_maxUserIds;                    /* INTEGER_0_MAX */
  53 static int hf_t125_maxTokenIds;                   /* INTEGER_0_MAX */
  54 static int hf_t125_numPriorities;                 /* INTEGER_0_MAX */
  55 static int hf_t125_minThroughput;                 /* INTEGER_0_MAX */
  56 static int hf_t125_maxHeight;                     /* INTEGER_0_MAX */
  57 static int hf_t125_maxMCSPDUsize;                 /* INTEGER_0_MAX */
  58 static int hf_t125_protocolVersion;               /* INTEGER_0_MAX */
  59 static int hf_t125_callingDomainSelector;         /* OCTET_STRING */
  60 static int hf_t125_calledDomainSelector;          /* OCTET_STRING */
  61 static int hf_t125_upwardFlag;                    /* BOOLEAN */
  62 static int hf_t125_targetParameters;              /* DomainParameters */
  63 static int hf_t125_minimumParameters;             /* DomainParameters */
  64 static int hf_t125_maximumParameters;             /* DomainParameters */
  65 static int hf_t125_userData;                      /* T_userData */
  66 static int hf_t125_result;                        /* Result */
  67 static int hf_t125_calledConnectId;               /* INTEGER_0_MAX */
  68 static int hf_t125_domainParameters;              /* DomainParameters */
  69 static int hf_t125_userData_01;                   /* T_userData_01 */
  70 static int hf_t125_dataPriority;                  /* DataPriority */
  71 static int hf_t125_connect_initial;               /* Connect_Initial */
  72 static int hf_t125_connect_response;              /* Connect_Response */
  73 static int hf_t125_connect_additional;            /* Connect_Additional */
  74 static int hf_t125_connect_result;                /* Connect_Result */
  75
  76 /* Initialize the subtree pointers */
  77 static int ett_t125;
  78
  79 static int ett_t125_DomainParameters;
  80 static int ett_t125_Connect_Initial_U;
  81 static int ett_t125_Connect_Response_U;
  82 static int ett_t125_Connect_Additional_U;
  83 static int ett_t125_Connect_Result_U;
  84 static int ett_t125_ConnectMCSPDU;
  85
  86 static heur_dissector_list_t t125_heur_subdissector_list;
  87
  88
  89 static const value_string t125_DataPriority_vals[] = {
  90   {   0, "top" },
  91   {   1, "high" },
  92   {   2, "medium" },
  93   {   3, "low" },
  94   { 0, NULL }
  95 };
  96
  97
  98 static int
  99 dissect_t125_DataPriority(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 100   offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
 101                                   NULL);
 102
 103   return offset;
 104 }
 105
 106
 107
 108 static int
 109 dissect_t125_INTEGER_0_MAX(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 110   offset = dissect_ber_integer64(implicit_tag, actx, tree, tvb, offset, hf_index,
 111                                                 NULL);
 112
 113   return offset;
 114 }
 115
 116
 117 static const ber_sequence_t DomainParameters_sequence[] = {
 118   { &hf_t125_maxChannelIds  , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_t125_INTEGER_0_MAX },
 119   { &hf_t125_maxUserIds     , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_t125_INTEGER_0_MAX },
 120   { &hf_t125_maxTokenIds    , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_t125_INTEGER_0_MAX },
 121   { &hf_t125_numPriorities  , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_t125_INTEGER_0_MAX },
 122   { &hf_t125_minThroughput  , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_t125_INTEGER_0_MAX },
 123   { &hf_t125_maxHeight      , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_t125_INTEGER_0_MAX },
 124   { &hf_t125_maxMCSPDUsize  , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_t125_INTEGER_0_MAX },
 125   { &hf_t125_protocolVersion, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_t125_INTEGER_0_MAX },
 126   { NULL, 0, 0, 0, NULL }
 127 };
 128
 129 static int
 130 dissect_t125_DomainParameters(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 131   offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
 132                                    DomainParameters_sequence, hf_index, ett_t125_DomainParameters);
 133
 134   return offset;
 135 }
 136
 137
 138
 139 static int
 140 dissect_t125_OCTET_STRING(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 141   offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
 142                                        NULL);
 143
 144   return offset;
 145 }
 146
 147
 148
 149 static int
 150 dissect_t125_BOOLEAN(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 151   offset = dissect_ber_boolean(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
 152
 153   return offset;
 154 }
 155
 156
 157
 158 static int
 159 dissect_t125_T_userData(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 160     tvbuff_t    *next_tvb = NULL;
 161         heur_dtbl_entry_t *hdtbl_entry;
 162   offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
 163                                        &next_tvb);
 164
 165     if(next_tvb)
 166         dissector_try_heuristic(t125_heur_subdissector_list, next_tvb,
 167              actx->pinfo, top_tree, &hdtbl_entry, NULL);
 168
 169   return offset;
 170 }
 171
 172
 173 static const ber_sequence_t Connect_Initial_U_sequence[] = {
 174   { &hf_t125_callingDomainSelector, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_t125_OCTET_STRING },
 175   { &hf_t125_calledDomainSelector, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_t125_OCTET_STRING },
 176   { &hf_t125_upwardFlag     , BER_CLASS_UNI, BER_UNI_TAG_BOOLEAN, BER_FLAGS_NOOWNTAG, dissect_t125_BOOLEAN },
 177   { &hf_t125_targetParameters, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_t125_DomainParameters },
 178   { &hf_t125_minimumParameters, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_t125_DomainParameters },
 179   { &hf_t125_maximumParameters, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_t125_DomainParameters },
 180   { &hf_t125_userData       , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_t125_T_userData },
 181   { NULL, 0, 0, 0, NULL }
 182 };
 183
 184 static int
 185 dissect_t125_Connect_Initial_U(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 186   offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
 187                                    Connect_Initial_U_sequence, hf_index, ett_t125_Connect_Initial_U);
 188
 189   return offset;
 190 }
 191
 192
 193
 194 static int
 195 dissect_t125_Connect_Initial(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 196   offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
 197                                       hf_index, BER_CLASS_APP, 101, true, dissect_t125_Connect_Initial_U);
 198
 199   return offset;
 200 }
 201
 202
 203 static const value_string t125_Result_vals[] = {
 204   {   0, "rt-successful" },
 205   {   1, "rt-domain-merging" },
 206   {   2, "rt-domain-not-hierarchical" },
 207   {   3, "rt-no-such-channel" },
 208   {   4, "rt-no-such-domain" },
 209   {   5, "rt-no-such-user" },
 210   {   6, "rt-not-admitted" },
 211   {   7, "rt-other-user-id" },
 212   {   8, "rt-parameters-unacceptable" },
 213   {   9, "rt-token-not-available" },
 214   {  10, "rt-token-not-possessed" },
 215   {  11, "rt-too-many-channels" },
 216   {  12, "rt-too-many-tokens" },
 217   {  13, "rt-too-many-users" },
 218   {  14, "rt-unspecified-failure" },
 219   {  15, "rt-user-rejected" },
 220   { 0, NULL }
 221 };
 222
 223
 224 static int
 225 dissect_t125_Result(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 226   offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
 227                                   NULL);
 228
 229   return offset;
 230 }
 231
 232
 233
 234 static int
 235 dissect_t125_T_userData_01(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 236     tvbuff_t    *next_tvb = NULL;
 237         heur_dtbl_entry_t *hdtbl_entry;
 238
 239   offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
 240                                        &next_tvb);
 241
 242     if(next_tvb)
 243         dissector_try_heuristic(t125_heur_subdissector_list, next_tvb,
 244              actx->pinfo, top_tree, &hdtbl_entry, NULL);
 245
 246   return offset;
 247 }
 248
 249
 250 static const ber_sequence_t Connect_Response_U_sequence[] = {
 251   { &hf_t125_result         , BER_CLASS_UNI, BER_UNI_TAG_ENUMERATED, BER_FLAGS_NOOWNTAG, dissect_t125_Result },
 252   { &hf_t125_calledConnectId, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_t125_INTEGER_0_MAX },
 253   { &hf_t125_domainParameters, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_t125_DomainParameters },
 254   { &hf_t125_userData_01    , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_t125_T_userData_01 },
 255   { NULL, 0, 0, 0, NULL }
 256 };
 257
 258 static int
 259 dissect_t125_Connect_Response_U(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 260   offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
 261                                    Connect_Response_U_sequence, hf_index, ett_t125_Connect_Response_U);
 262
 263   return offset;
 264 }
 265
 266
 267
 268 static int
 269 dissect_t125_Connect_Response(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 270   offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
 271                                       hf_index, BER_CLASS_APP, 102, true, dissect_t125_Connect_Response_U);
 272
 273   return offset;
 274 }
 275
 276
 277 static const ber_sequence_t Connect_Additional_U_sequence[] = {
 278   { &hf_t125_calledConnectId, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_t125_INTEGER_0_MAX },
 279   { &hf_t125_dataPriority   , BER_CLASS_UNI, BER_UNI_TAG_ENUMERATED, BER_FLAGS_NOOWNTAG, dissect_t125_DataPriority },
 280   { NULL, 0, 0, 0, NULL }
 281 };
 282
 283 static int
 284 dissect_t125_Connect_Additional_U(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 285   offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
 286                                    Connect_Additional_U_sequence, hf_index, ett_t125_Connect_Additional_U);
 287
 288   return offset;
 289 }
 290
 291
 292
 293 static int
 294 dissect_t125_Connect_Additional(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 295   offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
 296                                       hf_index, BER_CLASS_APP, 103, true, dissect_t125_Connect_Additional_U);
 297
 298   return offset;
 299 }
 300
 301
 302 static const ber_sequence_t Connect_Result_U_sequence[] = {
 303   { &hf_t125_result         , BER_CLASS_UNI, BER_UNI_TAG_ENUMERATED, BER_FLAGS_NOOWNTAG, dissect_t125_Result },
 304   { NULL, 0, 0, 0, NULL }
 305 };
 306
 307 static int
 308 dissect_t125_Connect_Result_U(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 309   offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
 310                                    Connect_Result_U_sequence, hf_index, ett_t125_Connect_Result_U);
 311
 312   return offset;
 313 }
 314
 315
 316
 317 static int
 318 dissect_t125_Connect_Result(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 319   offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
 320                                       hf_index, BER_CLASS_APP, 104, true, dissect_t125_Connect_Result_U);
 321
 322   return offset;
 323 }
 324
 325
 326 static const value_string t125_ConnectMCSPDU_vals[] = {
 327   { 101, "connect-initial" },
 328   { 102, "connect-response" },
 329   { 103, "connect-additional" },
 330   { 104, "connect-result" },
 331   { 0, NULL }
 332 };
 333
 334 static const ber_choice_t ConnectMCSPDU_choice[] = {
 335   { 101, &hf_t125_connect_initial, BER_CLASS_APP, 101, BER_FLAGS_NOOWNTAG, dissect_t125_Connect_Initial },
 336   { 102, &hf_t125_connect_response, BER_CLASS_APP, 102, BER_FLAGS_NOOWNTAG, dissect_t125_Connect_Response },
 337   { 103, &hf_t125_connect_additional, BER_CLASS_APP, 103, BER_FLAGS_NOOWNTAG, dissect_t125_Connect_Additional },
 338   { 104, &hf_t125_connect_result , BER_CLASS_APP, 104, BER_FLAGS_NOOWNTAG, dissect_t125_Connect_Result },
 339   { 0, NULL, 0, 0, 0, NULL }
 340 };
 341
 342 static int
 343 dissect_t125_ConnectMCSPDU(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 344   offset = dissect_ber_choice(actx, tree, tvb, offset,
 345                                  ConnectMCSPDU_choice, hf_index, ett_t125_ConnectMCSPDU,
 346                                  NULL);
 347
 348   return offset;
 349 }
 350
 351 /*--- PDUs ---*/
 352
 353 static int dissect_ConnectMCSPDU_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) {
 354   int offset = 0;
 355   asn1_ctx_t asn1_ctx;
 356   asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);
 357   offset = dissect_t125_ConnectMCSPDU(false, tvb, offset, &asn1_ctx, tree, hf_t125_ConnectMCSPDU_PDU);
 358   return offset;
 359 }
 360
 361
 362 static int
 363 dissect_t125(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void *data _U_)
 364 {
 365   proto_item *item = NULL;
 366   proto_tree *tree = NULL;
 367   int8_t ber_class;
 368   bool pc;
 369   int32_t tag;
 370
 371   top_tree = parent_tree;
 372
 373   col_set_str(pinfo->cinfo, COL_PROTOCOL, "T.125");
 374   col_clear(pinfo->cinfo, COL_INFO);
 375
 376   item = proto_tree_add_item(parent_tree, proto_t125, tvb, 0, tvb_captured_length(tvb), ENC_NA);
 377   tree = proto_item_add_subtree(item, ett_t125);
 378
 379   get_ber_identifier(tvb, 0, &ber_class, &pc, &tag);
 380
 381   if ( (ber_class==BER_CLASS_APP) && (tag>=101) && (tag<=104) ){
 382     dissect_ConnectMCSPDU_PDU(tvb, pinfo, tree, NULL);
 383   } else  {
 384     t124_set_top_tree(top_tree);
 385     dissect_DomainMCSPDU_PDU(tvb, pinfo, tree);
 386   }
 387
 388   return tvb_captured_length(tvb);
 389 }
 390
 391 static bool
 392 dissect_t125_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void *data _U_)
 393 {
 394   int8_t ber_class;
 395   bool pc;
 396   int32_t tag;
 397   volatile bool failed;
 398
 399   /*
 400    * We must catch all the "ran past the end of the packet" exceptions
 401    * here and, if we catch one, just return false.  It's too painful
 402    * to have a version of dissect_per_sequence() that checks all
 403    * references to the tvbuff before making them and returning "no"
 404    * if they would fail.
 405    */
 406   failed = false;
 407   TRY {
 408     /* could be BER */
 409     get_ber_identifier(tvb, 0, &ber_class, &pc, &tag);
 410   } CATCH_BOUNDS_ERRORS {
 411     failed = true;
 412   } ENDTRY;
 413
 414   if (failed) {
 415       return false;
 416   }
 417
 418   if (((ber_class==BER_CLASS_APP) && ((tag>=101) && (tag<=104)))) {
 419     dissect_t125(tvb, pinfo, parent_tree, NULL);
 420
 421     return true;
 422   }
 423
 424   /*
 425    * Check that the first byte of the packet is a valid t125/MCS header.
 426    * This might not be enough, but since t125 only catch COTP packets,
 427    * it should not be a problem.
 428    */
 429   uint8_t first_byte = tvb_get_uint8(tvb, 0) >> 2;
 430   switch (first_byte) {
 431     case HF_T125_ERECT_DOMAIN_REQUEST:
 432     case HF_T125_ATTACH_USER_REQUEST:
 433     case HF_T125_ATTACH_USER_CONFIRM:
 434     case HF_T125_CHANNEL_JOIN_REQUEST:
 435     case HF_T125_CHANNEL_JOIN_CONFIRM:
 436     case HF_T125_DISCONNECT_PROVIDER_ULTIMATUM:
 437     case HF_T125_SEND_DATA_REQUEST:
 438     case HF_T125_SEND_DATA_INDICATION:
 439       dissect_t125(tvb, pinfo, parent_tree, NULL);
 440       return true;
 441   }
 442
 443   return false;
 444 }
 445
 446
 447 /*--- proto_register_t125 -------------------------------------------*/
 448 void proto_register_t125(void) {
 449
 450   /* List of fields */
 451   static hf_register_info hf[] = {
 452     { &hf_t125_ConnectMCSPDU_PDU,
 453       { "ConnectMCSPDU", "t125.ConnectMCSPDU",
 454         FT_UINT32, BASE_DEC, VALS(t125_ConnectMCSPDU_vals), 0,
 455         NULL, HFILL }},
 456     { &hf_t125_maxChannelIds,
 457       { "maxChannelIds", "t125.maxChannelIds",
 458         FT_UINT64, BASE_DEC, NULL, 0,
 459         "INTEGER_0_MAX", HFILL }},
 460     { &hf_t125_maxUserIds,
 461       { "maxUserIds", "t125.maxUserIds",
 462         FT_UINT64, BASE_DEC, NULL, 0,
 463         "INTEGER_0_MAX", HFILL }},
 464     { &hf_t125_maxTokenIds,
 465       { "maxTokenIds", "t125.maxTokenIds",
 466         FT_UINT64, BASE_DEC, NULL, 0,
 467         "INTEGER_0_MAX", HFILL }},
 468     { &hf_t125_numPriorities,
 469       { "numPriorities", "t125.numPriorities",
 470         FT_UINT64, BASE_DEC, NULL, 0,
 471         "INTEGER_0_MAX", HFILL }},
 472     { &hf_t125_minThroughput,
 473       { "minThroughput", "t125.minThroughput",
 474         FT_UINT64, BASE_DEC, NULL, 0,
 475         "INTEGER_0_MAX", HFILL }},
 476     { &hf_t125_maxHeight,
 477       { "maxHeight", "t125.maxHeight",
 478         FT_UINT64, BASE_DEC, NULL, 0,
 479         "INTEGER_0_MAX", HFILL }},
 480     { &hf_t125_maxMCSPDUsize,
 481       { "maxMCSPDUsize", "t125.maxMCSPDUsize",
 482         FT_UINT64, BASE_DEC, NULL, 0,
 483         "INTEGER_0_MAX", HFILL }},
 484     { &hf_t125_protocolVersion,
 485       { "protocolVersion", "t125.protocolVersion",
 486         FT_UINT64, BASE_DEC, NULL, 0,
 487         "INTEGER_0_MAX", HFILL }},
 488     { &hf_t125_callingDomainSelector,
 489       { "callingDomainSelector", "t125.callingDomainSelector",
 490         FT_BYTES, BASE_NONE, NULL, 0,
 491         "OCTET_STRING", HFILL }},
 492     { &hf_t125_calledDomainSelector,
 493       { "calledDomainSelector", "t125.calledDomainSelector",
 494         FT_BYTES, BASE_NONE, NULL, 0,
 495         "OCTET_STRING", HFILL }},
 496     { &hf_t125_upwardFlag,
 497       { "upwardFlag", "t125.upwardFlag",
 498         FT_BOOLEAN, BASE_NONE, NULL, 0,
 499         "BOOLEAN", HFILL }},
 500     { &hf_t125_targetParameters,
 501       { "targetParameters", "t125.targetParameters_element",
 502         FT_NONE, BASE_NONE, NULL, 0,
 503         "DomainParameters", HFILL }},
 504     { &hf_t125_minimumParameters,
 505       { "minimumParameters", "t125.minimumParameters_element",
 506         FT_NONE, BASE_NONE, NULL, 0,
 507         "DomainParameters", HFILL }},
 508     { &hf_t125_maximumParameters,
 509       { "maximumParameters", "t125.maximumParameters_element",
 510         FT_NONE, BASE_NONE, NULL, 0,
 511         "DomainParameters", HFILL }},
 512     { &hf_t125_userData,
 513       { "userData", "t125.userData",
 514         FT_BYTES, BASE_NONE, NULL, 0,
 515         NULL, HFILL }},
 516     { &hf_t125_result,
 517       { "result", "t125.result",
 518         FT_UINT32, BASE_DEC, VALS(t125_Result_vals), 0,
 519         NULL, HFILL }},
 520     { &hf_t125_calledConnectId,
 521       { "calledConnectId", "t125.calledConnectId",
 522         FT_UINT64, BASE_DEC, NULL, 0,
 523         "INTEGER_0_MAX", HFILL }},
 524     { &hf_t125_domainParameters,
 525       { "domainParameters", "t125.domainParameters_element",
 526         FT_NONE, BASE_NONE, NULL, 0,
 527         NULL, HFILL }},
 528     { &hf_t125_userData_01,
 529       { "userData", "t125.userData",
 530         FT_BYTES, BASE_NONE, NULL, 0,
 531         "T_userData_01", HFILL }},
 532     { &hf_t125_dataPriority,
 533       { "dataPriority", "t125.dataPriority",
 534         FT_UINT32, BASE_DEC, VALS(t125_DataPriority_vals), 0,
 535         NULL, HFILL }},
 536     { &hf_t125_connect_initial,
 537       { "connect-initial", "t125.connect_initial_element",
 538         FT_NONE, BASE_NONE, NULL, 0,
 539         NULL, HFILL }},
 540     { &hf_t125_connect_response,
 541       { "connect-response", "t125.connect_response_element",
 542         FT_NONE, BASE_NONE, NULL, 0,
 543         NULL, HFILL }},
 544     { &hf_t125_connect_additional,
 545       { "connect-additional", "t125.connect_additional_element",
 546         FT_NONE, BASE_NONE, NULL, 0,
 547         NULL, HFILL }},
 548     { &hf_t125_connect_result,
 549       { "connect-result", "t125.connect_result_element",
 550         FT_NONE, BASE_NONE, NULL, 0,
 551         NULL, HFILL }},
 552   };
 553
 554   /* List of subtrees */
 555   static int *ett[] = {
 556           &ett_t125,
 557     &ett_t125_DomainParameters,
 558     &ett_t125_Connect_Initial_U,
 559     &ett_t125_Connect_Response_U,
 560     &ett_t125_Connect_Additional_U,
 561     &ett_t125_Connect_Result_U,
 562     &ett_t125_ConnectMCSPDU,
 563   };
 564
 565   /* Register protocol */
 566   proto_t125 = proto_register_protocol(PNAME, PSNAME, PFNAME);
 567   /* Register fields and subtrees */
 568   proto_register_field_array(proto_t125, hf, array_length(hf));
 569   proto_register_subtree_array(ett, array_length(ett));
 570
 571   t125_heur_subdissector_list= register_heur_dissector_list_with_description("t125", "T.125 User data", proto_t125);
 572
 573   register_dissector("t125", dissect_t125, proto_t125);
 574 }
 575
 576
 577 /*--- proto_reg_handoff_t125 ---------------------------------------*/
 578 void proto_reg_handoff_t125(void) {
 579
 580   heur_dissector_add("cotp", dissect_t125_heur, "T.125 over COTP", "t125_cotp", proto_t125, HEURISTIC_ENABLE);
 581   heur_dissector_add("cotp_is", dissect_t125_heur, "T.125 over COTP (inactive subset)", "t125_cotp_is", proto_t125, HEURISTIC_ENABLE);
 582 }