epan/dissectors/packet-idmp.c

   1 /* Do not modify this file. Changes will be overwritten.                      */
   2 /* Generated automatically by the ASN.1 to Wireshark dissector compiler       */
   3 /* packet-idmp.c                                                              */
   4 /* asn2wrs.py -b -q -L -p idmp -c ./idmp.cnf -s ./packet-idmp-template -D . -O ../.. IDMProtocolSpecification.asn CommonProtocolSpecification.asn */
   5
   6 /* packet-idmp.c
   7  * Routines for X.519 Internet Directly Mapped Procotol (IDMP) packet dissection
   8  * Graeme Lunt 2010
   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 #include "config.h"
  18
  19 #include <epan/packet.h>
  20 #include <epan/prefs.h>
  21 #include <epan/reassemble.h>
  22 #include <epan/conversation.h>
  23 #include <epan/oids.h>
  24 #include <epan/asn1.h>
  25 #include <epan/ipproto.h>
  26 #include <epan/strutil.h>
  27
  28 #include <wsutil/str_util.h>
  29 #include <wsutil/array.h>
  30
  31 #include "packet-tcp.h"
  32
  33 #include "packet-ber.h"
  34 #include "packet-ros.h"
  35 #include "packet-x509ce.h"
  36
  37
  38 #define PNAME  "X.519 Internet Directly Mapped Protocol"
  39 #define PSNAME "IDMP"
  40 #define PFNAME "idmp"
  41
  42 void proto_register_idmp(void);
  43 void proto_reg_handoff_idm(void);
  44 void register_idmp_protocol_info(const char *oid, const ros_info_t *rinfo, int proto _U_, const char *name);
  45
  46 static bool           idmp_desegment       = true;
  47 #define IDMP_TCP_PORT     1102 /* made up for now - not IANA registered */
  48 static bool           idmp_reassemble      = true;
  49 static dissector_handle_t idmp_handle;
  50
  51 static proto_tree *top_tree;
  52 static const char *protocolID;
  53 static const char *saved_protocolID;
  54 static uint32_t    opcode           = -1;
  55
  56 /* Initialize the protocol and registered fields */
  57 int proto_idmp;
  58
  59 static int hf_idmp_version;
  60 static int hf_idmp_final;
  61 static int hf_idmp_length;
  62 static int hf_idmp_PDU;
  63
  64 static reassembly_table idmp_reassembly_table;
  65
  66 static int hf_idmp_fragments;
  67 static int hf_idmp_fragment;
  68 static int hf_idmp_fragment_overlap;
  69 static int hf_idmp_fragment_overlap_conflicts;
  70 static int hf_idmp_fragment_multiple_tails;
  71 static int hf_idmp_fragment_too_long_fragment;
  72 static int hf_idmp_fragment_error;
  73 static int hf_idmp_fragment_count;
  74 static int hf_idmp_reassembled_in;
  75 static int hf_idmp_reassembled_length;
  76 static int hf_idmp_segment_data;
  77
  78 static int ett_idmp_fragment;
  79 static int ett_idmp_fragments;
  80
  81 static const fragment_items idmp_frag_items = {
  82     /* Fragment subtrees */
  83     &ett_idmp_fragment,
  84     &ett_idmp_fragments,
  85     /* Fragment fields */
  86     &hf_idmp_fragments,
  87     &hf_idmp_fragment,
  88     &hf_idmp_fragment_overlap,
  89     &hf_idmp_fragment_overlap_conflicts,
  90     &hf_idmp_fragment_multiple_tails,
  91     &hf_idmp_fragment_too_long_fragment,
  92     &hf_idmp_fragment_error,
  93     &hf_idmp_fragment_count,
  94     /* Reassembled in field */
  95     &hf_idmp_reassembled_in,
  96     /* Reassembled length field */
  97     &hf_idmp_reassembled_length,
  98     /* Reassembled data field */
  99     NULL,
 100     /* Tag */
 101     "IDMP fragments"
 102 };
 103
 104
 105 static int call_idmp_oid_callback(tvbuff_t *tvb, int offset, packet_info *pinfo, int op, proto_tree *tree, struct SESSION_DATA_STRUCTURE *session)
 106 {
 107     if(session != NULL) {
 108
 109         /* XXX saved_protocolID should be part of session data */
 110         if (!saved_protocolID) {
 111             saved_protocolID = "[ unknown ]";
 112         }
 113
 114         /* mimic ROS! */
 115         session->ros_op = op;
 116         offset = call_ros_oid_callback(saved_protocolID, tvb, offset, pinfo, tree, session);
 117     }
 118
 119     return offset;
 120
 121 }
 122
 123 static int hf_idmp_bind;                          /* IdmBind */
 124 static int hf_idmp_bindResult;                    /* IdmBindResult */
 125 static int hf_idmp_bindError;                     /* IdmBindError */
 126 static int hf_idmp_request;                       /* Request */
 127 static int hf_idmp_idm_result;                    /* IdmResult */
 128 static int hf_idmp_idm_error;                     /* Error */
 129 static int hf_idmp_reject;                        /* IdmReject */
 130 static int hf_idmp_unbind;                        /* Unbind */
 131 static int hf_idmp_abort;                         /* Abort */
 132 static int hf_idmp_startTLS;                      /* StartTLS */
 133 static int hf_idmp_tLSResponse;                   /* TLSResponse */
 134 static int hf_idmp_protocolID;                    /* OBJECT_IDENTIFIER */
 135 static int hf_idmp_callingAETitle;                /* GeneralName */
 136 static int hf_idmp_calledAETitle;                 /* GeneralName */
 137 static int hf_idmp_bind_argument;                 /* Bind_argument */
 138 static int hf_idmp_respondingAETitle;             /* GeneralName */
 139 static int hf_idmp_bind_result;                   /* Bind_result */
 140 static int hf_idmp_bind_errcode;                  /* Bind_errcode */
 141 static int hf_idmp_aETitleError;                  /* T_aETitleError */
 142 static int hf_idmp_bind_error;                    /* Bind_error */
 143 static int hf_idmp_invokeID;                      /* INTEGER */
 144 static int hf_idmp_opcode;                        /* Code */
 145 static int hf_idmp_argument;                      /* T_argument */
 146 static int hf_idmp_idm_invokeID;                  /* InvokeId */
 147 static int hf_idmp_result;                        /* T_result */
 148 static int hf_idmp_errcode;                       /* T_errcode */
 149 static int hf_idmp_error;                         /* T_error */
 150 static int hf_idmp_reason;                        /* T_reason */
 151 static int hf_idmp_local;                         /* T_local */
 152 static int hf_idmp_global;                        /* OBJECT_IDENTIFIER */
 153 static int hf_idmp_present;                       /* INTEGER */
 154 static int hf_idmp_absent;                        /* NULL */
 155
 156 /* Initialize the subtree pointers */
 157 static int ett_idmp;
 158 static int ett_idmp_IDM_PDU;
 159 static int ett_idmp_IdmBind;
 160 static int ett_idmp_IdmBindResult;
 161 static int ett_idmp_IdmBindError;
 162 static int ett_idmp_Request;
 163 static int ett_idmp_IdmResult;
 164 static int ett_idmp_Error;
 165 static int ett_idmp_IdmReject;
 166 static int ett_idmp_Code;
 167 static int ett_idmp_InvokeId;
 168
 169
 170
 171 static int
 172 dissect_idmp_OBJECT_IDENTIFIER(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 173   offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &protocolID);
 174
 175   return offset;
 176 }
 177
 178
 179
 180 static int
 181 dissect_idmp_Bind_argument(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 182   struct SESSION_DATA_STRUCTURE *session = (struct SESSION_DATA_STRUCTURE*)actx->private_data;
 183   offset = call_idmp_oid_callback(tvb, offset, actx->pinfo, (ROS_OP_BIND | ROS_OP_ARGUMENT), top_tree, session);
 184
 185
 186   return offset;
 187 }
 188
 189
 190 static const ber_sequence_t IdmBind_sequence[] = {
 191   { &hf_idmp_protocolID     , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_idmp_OBJECT_IDENTIFIER },
 192   { &hf_idmp_callingAETitle , BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL, dissect_x509ce_GeneralName },
 193   { &hf_idmp_calledAETitle  , BER_CLASS_CON, 1, BER_FLAGS_OPTIONAL, dissect_x509ce_GeneralName },
 194   { &hf_idmp_bind_argument  , BER_CLASS_CON, 2, 0, dissect_idmp_Bind_argument },
 195   { NULL, 0, 0, 0, NULL }
 196 };
 197
 198 static int
 199 dissect_idmp_IdmBind(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 200   protocolID = saved_protocolID = NULL;
 201   offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
 202                                    IdmBind_sequence, hf_index, ett_idmp_IdmBind);
 203
 204   if (protocolID) {
 205     saved_protocolID = wmem_strdup(wmem_epan_scope(), protocolID);
 206   }
 207   return offset;
 208 }
 209
 210
 211
 212 static int
 213 dissect_idmp_Bind_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_) {
 214   struct SESSION_DATA_STRUCTURE *session = (struct SESSION_DATA_STRUCTURE*)actx->private_data;
 215   offset = call_idmp_oid_callback(tvb, offset, actx->pinfo, (ROS_OP_BIND | ROS_OP_RESULT), top_tree, session);
 216
 217
 218   return offset;
 219 }
 220
 221
 222 static const ber_sequence_t IdmBindResult_sequence[] = {
 223   { &hf_idmp_protocolID     , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_idmp_OBJECT_IDENTIFIER },
 224   { &hf_idmp_respondingAETitle, BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL, dissect_x509ce_GeneralName },
 225   { &hf_idmp_bind_result    , BER_CLASS_CON, 1, 0, dissect_idmp_Bind_result },
 226   { NULL, 0, 0, 0, NULL }
 227 };
 228
 229 static int
 230 dissect_idmp_IdmBindResult(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 231   offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
 232                                    IdmBindResult_sequence, hf_index, ett_idmp_IdmBindResult);
 233
 234   return offset;
 235 }
 236
 237
 238
 239 static int
 240 dissect_idmp_Bind_errcode(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 241
 242
 243   return offset;
 244 }
 245
 246
 247 static const value_string idmp_T_aETitleError_vals[] = {
 248   {   0, "callingAETitleNotAccepted" },
 249   {   1, "calledAETitleNotRecognized" },
 250   { 0, NULL }
 251 };
 252
 253
 254 static int
 255 dissect_idmp_T_aETitleError(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 256   offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
 257                                   NULL);
 258
 259   return offset;
 260 }
 261
 262
 263
 264 static int
 265 dissect_idmp_Bind_error(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 266   struct SESSION_DATA_STRUCTURE *session = (struct SESSION_DATA_STRUCTURE*)actx->private_data;
 267   offset = call_idmp_oid_callback(tvb, offset, actx->pinfo, (ROS_OP_BIND| ROS_OP_ERROR), top_tree, session);
 268
 269
 270   return offset;
 271 }
 272
 273
 274 static const ber_sequence_t IdmBindError_sequence[] = {
 275   { &hf_idmp_protocolID     , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_idmp_OBJECT_IDENTIFIER },
 276   { &hf_idmp_bind_errcode   , BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_idmp_Bind_errcode },
 277   { &hf_idmp_respondingAETitle, BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL, dissect_x509ce_GeneralName },
 278   { &hf_idmp_aETitleError   , BER_CLASS_UNI, BER_UNI_TAG_ENUMERATED, BER_FLAGS_OPTIONAL|BER_FLAGS_NOOWNTAG, dissect_idmp_T_aETitleError },
 279   { &hf_idmp_bind_error     , BER_CLASS_CON, 1, 0, dissect_idmp_Bind_error },
 280   { NULL, 0, 0, 0, NULL }
 281 };
 282
 283 static int
 284 dissect_idmp_IdmBindError(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                                    IdmBindError_sequence, hf_index, ett_idmp_IdmBindError);
 287
 288   return offset;
 289 }
 290
 291
 292
 293 static int
 294 dissect_idmp_INTEGER(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_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
 296                                                 NULL);
 297
 298   return offset;
 299 }
 300
 301
 302
 303 static int
 304 dissect_idmp_T_local(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 305   offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
 306                                                 &opcode);
 307
 308   return offset;
 309 }
 310
 311
 312 static const value_string idmp_Code_vals[] = {
 313   {   0, "local" },
 314   {   1, "global" },
 315   { 0, NULL }
 316 };
 317
 318 static const ber_choice_t Code_choice[] = {
 319   {   0, &hf_idmp_local          , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_idmp_T_local },
 320   {   1, &hf_idmp_global         , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_idmp_OBJECT_IDENTIFIER },
 321   { 0, NULL, 0, 0, 0, NULL }
 322 };
 323
 324 static int
 325 dissect_idmp_Code(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 326   offset = dissect_ber_choice(actx, tree, tvb, offset,
 327                                  Code_choice, hf_index, ett_idmp_Code,
 328                                  NULL);
 329
 330   return offset;
 331 }
 332
 333
 334
 335 static int
 336 dissect_idmp_T_argument(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 337   struct SESSION_DATA_STRUCTURE *session = (struct SESSION_DATA_STRUCTURE*)actx->private_data;
 338   offset = call_idmp_oid_callback(tvb, offset, actx->pinfo, (ROS_OP_INVOKE | ROS_OP_ARGUMENT | opcode), top_tree, session);
 339
 340
 341   return offset;
 342 }
 343
 344
 345 static const ber_sequence_t Request_sequence[] = {
 346   { &hf_idmp_invokeID       , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_idmp_INTEGER },
 347   { &hf_idmp_opcode         , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_idmp_Code },
 348   { &hf_idmp_argument       , BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_idmp_T_argument },
 349   { NULL, 0, 0, 0, NULL }
 350 };
 351
 352 static int
 353 dissect_idmp_Request(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 354   offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
 355                                    Request_sequence, hf_index, ett_idmp_Request);
 356
 357   return offset;
 358 }
 359
 360
 361
 362 static int
 363 dissect_idmp_NULL(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 364   offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index);
 365
 366   return offset;
 367 }
 368
 369
 370 static const value_string idmp_InvokeId_vals[] = {
 371   {   0, "present" },
 372   {   1, "absent" },
 373   { 0, NULL }
 374 };
 375
 376 static const ber_choice_t InvokeId_choice[] = {
 377   {   0, &hf_idmp_present        , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_idmp_INTEGER },
 378   {   1, &hf_idmp_absent         , BER_CLASS_UNI, BER_UNI_TAG_NULL, BER_FLAGS_NOOWNTAG, dissect_idmp_NULL },
 379   { 0, NULL, 0, 0, 0, NULL }
 380 };
 381
 382 static int
 383 dissect_idmp_InvokeId(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 384   offset = dissect_ber_choice(actx, tree, tvb, offset,
 385                                  InvokeId_choice, hf_index, ett_idmp_InvokeId,
 386                                  NULL);
 387
 388   return offset;
 389 }
 390
 391
 392
 393 static int
 394 dissect_idmp_T_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_) {
 395   struct SESSION_DATA_STRUCTURE *session = (struct SESSION_DATA_STRUCTURE*)actx->private_data;
 396   offset = call_idmp_oid_callback(tvb, offset, actx->pinfo, (ROS_OP_INVOKE | ROS_OP_RESULT | opcode), top_tree, session);
 397
 398
 399   return offset;
 400 }
 401
 402
 403 static const ber_sequence_t IdmResult_sequence[] = {
 404   { &hf_idmp_idm_invokeID   , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_idmp_InvokeId },
 405   { &hf_idmp_opcode         , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_idmp_Code },
 406   { &hf_idmp_result         , BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_idmp_T_result },
 407   { NULL, 0, 0, 0, NULL }
 408 };
 409
 410 static int
 411 dissect_idmp_IdmResult(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 412   offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
 413                                    IdmResult_sequence, hf_index, ett_idmp_IdmResult);
 414
 415   return offset;
 416 }
 417
 418
 419
 420 static int
 421 dissect_idmp_T_errcode(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 422
 423
 424   return offset;
 425 }
 426
 427
 428
 429 static int
 430 dissect_idmp_T_error(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 431
 432
 433   return offset;
 434 }
 435
 436
 437 static const ber_sequence_t Error_sequence[] = {
 438   { &hf_idmp_invokeID       , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_idmp_INTEGER },
 439   { &hf_idmp_errcode        , BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_idmp_T_errcode },
 440   { &hf_idmp_error          , BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_idmp_T_error },
 441   { NULL, 0, 0, 0, NULL }
 442 };
 443
 444 static int
 445 dissect_idmp_Error(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 446   offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
 447                                    Error_sequence, hf_index, ett_idmp_Error);
 448
 449   return offset;
 450 }
 451
 452
 453 static const value_string idmp_T_reason_vals[] = {
 454   {   0, "mistypedPDU" },
 455   {   1, "duplicateInvokeIDRequest" },
 456   {   2, "unsupportedOperationRequest" },
 457   {   3, "unknownOperationRequest" },
 458   {   4, "mistypedArgumentRequest" },
 459   {   5, "resourceLimitationRequest" },
 460   {   6, "unknownInvokeIDResult" },
 461   {   7, "mistypedResultRequest" },
 462   {   8, "unknownInvokeIDError" },
 463   {   9, "unknownError" },
 464   {  10, "mistypedParameterError" },
 465   { 0, NULL }
 466 };
 467
 468
 469 static int
 470 dissect_idmp_T_reason(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 471   offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
 472                                   NULL);
 473
 474   return offset;
 475 }
 476
 477
 478 static const ber_sequence_t IdmReject_sequence[] = {
 479   { &hf_idmp_invokeID       , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_idmp_INTEGER },
 480   { &hf_idmp_reason         , BER_CLASS_UNI, BER_UNI_TAG_ENUMERATED, BER_FLAGS_NOOWNTAG, dissect_idmp_T_reason },
 481   { NULL, 0, 0, 0, NULL }
 482 };
 483
 484 static int
 485 dissect_idmp_IdmReject(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 486   offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
 487                                    IdmReject_sequence, hf_index, ett_idmp_IdmReject);
 488
 489   return offset;
 490 }
 491
 492
 493
 494 static int
 495 dissect_idmp_Unbind(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 496   offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index);
 497
 498   return offset;
 499 }
 500
 501
 502 static const value_string idmp_Abort_vals[] = {
 503   {   0, "mistypedPDU" },
 504   {   1, "unboundRequest" },
 505   {   2, "invalidPDU" },
 506   {   3, "resourceLimitation" },
 507   {   4, "connectionFailed" },
 508   {   5, "invalidProtocol" },
 509   {   6, "reasonNotSpecified" },
 510   { 0, NULL }
 511 };
 512
 513
 514 static int
 515 dissect_idmp_Abort(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 516   offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
 517                                   NULL);
 518
 519   return offset;
 520 }
 521
 522
 523
 524 static int
 525 dissect_idmp_StartTLS(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 526   offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index);
 527
 528   return offset;
 529 }
 530
 531
 532 static const value_string idmp_TLSResponse_vals[] = {
 533   {   0, "success" },
 534   {   1, "operationsError" },
 535   {   2, "protocolError" },
 536   {   3, "unavailable" },
 537   { 0, NULL }
 538 };
 539
 540
 541 static int
 542 dissect_idmp_TLSResponse(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 543   offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
 544                                   NULL);
 545
 546   return offset;
 547 }
 548
 549
 550 static const value_string idmp_IDM_PDU_vals[] = {
 551   {   0, "bind" },
 552   {   1, "bindResult" },
 553   {   2, "bindError" },
 554   {   3, "request" },
 555   {   4, "result" },
 556   {   5, "error" },
 557   {   6, "reject" },
 558   {   7, "unbind" },
 559   {   8, "abort" },
 560   {   9, "startTLS" },
 561   {  10, "tLSResponse" },
 562   { 0, NULL }
 563 };
 564
 565 static const ber_choice_t IDM_PDU_choice[] = {
 566   {   0, &hf_idmp_bind           , BER_CLASS_CON, 0, 0, dissect_idmp_IdmBind },
 567   {   1, &hf_idmp_bindResult     , BER_CLASS_CON, 1, 0, dissect_idmp_IdmBindResult },
 568   {   2, &hf_idmp_bindError      , BER_CLASS_CON, 2, 0, dissect_idmp_IdmBindError },
 569   {   3, &hf_idmp_request        , BER_CLASS_CON, 3, 0, dissect_idmp_Request },
 570   {   4, &hf_idmp_idm_result     , BER_CLASS_CON, 4, 0, dissect_idmp_IdmResult },
 571   {   5, &hf_idmp_idm_error      , BER_CLASS_CON, 5, 0, dissect_idmp_Error },
 572   {   6, &hf_idmp_reject         , BER_CLASS_CON, 6, 0, dissect_idmp_IdmReject },
 573   {   7, &hf_idmp_unbind         , BER_CLASS_CON, 7, 0, dissect_idmp_Unbind },
 574   {   8, &hf_idmp_abort          , BER_CLASS_CON, 8, 0, dissect_idmp_Abort },
 575   {   9, &hf_idmp_startTLS       , BER_CLASS_CON, 9, 0, dissect_idmp_StartTLS },
 576   {  10, &hf_idmp_tLSResponse    , BER_CLASS_CON, 10, 0, dissect_idmp_TLSResponse },
 577   { 0, NULL, 0, 0, 0, NULL }
 578 };
 579
 580 static int
 581 dissect_idmp_IDM_PDU(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
 582   offset = dissect_ber_choice(actx, tree, tvb, offset,
 583                                  IDM_PDU_choice, hf_index, ett_idmp_IDM_PDU,
 584                                  NULL);
 585
 586   return offset;
 587 }
 588
 589
 590 void
 591 register_idmp_protocol_info(const char *oid, const ros_info_t *rinfo, int proto _U_, const char *name)
 592 {
 593     /* just register with ROS for now */
 594     register_ros_protocol_info(oid, rinfo, proto, name, false);
 595 }
 596
 597
 598 static int dissect_idmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_)
 599 {
 600     int offset = 0;
 601
 602     proto_item                    *item;
 603     proto_tree                    *tree;
 604     asn1_ctx_t                     asn1_ctx;
 605     struct SESSION_DATA_STRUCTURE  session;
 606     bool                           idmp_final;
 607     uint32_t                       idmp_length;
 608     fragment_head                 *fd_head;
 609     conversation_t                *conv;
 610     uint32_t                       dst_ref = 0;
 611
 612     asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);
 613
 614     conv = find_conversation_pinfo(pinfo, 0);
 615     if (conv) {
 616         /* Found a conversation, also use index for the generated dst_ref */
 617         dst_ref = conv->conv_index;
 618     }
 619
 620     /* save parent_tree so subdissectors can create new top nodes */
 621     top_tree=parent_tree;
 622
 623     item = proto_tree_add_item(parent_tree, proto_idmp, tvb, 0, -1, ENC_NA);
 624     tree = proto_item_add_subtree(item, ett_idmp);
 625
 626     col_set_str(pinfo->cinfo, COL_PROTOCOL, "IDMP");
 627
 628     /* now check the segment fields */
 629
 630     proto_tree_add_item(tree, hf_idmp_version, tvb, offset, 1, ENC_BIG_ENDIAN); offset++;
 631     proto_tree_add_item(tree, hf_idmp_final, tvb, offset, 1, ENC_BIG_ENDIAN);
 632     idmp_final = tvb_get_uint8(tvb, offset); offset++;
 633     proto_tree_add_item(tree, hf_idmp_length, tvb, offset, 4, ENC_BIG_ENDIAN);
 634     idmp_length = tvb_get_ntohl(tvb, offset); offset += 4;
 635
 636     asn1_ctx.private_data = &session;
 637
 638     if(idmp_reassemble) {
 639
 640         pinfo->fragmented = !idmp_final;
 641
 642         col_append_fstr(pinfo->cinfo, COL_INFO, " [%sIDMP fragment, %u byte%s]",
 643                             idmp_final ? "Final " : "" ,
 644                             idmp_length, plurality(idmp_length, "", "s"));
 645
 646         fd_head = fragment_add_seq_next(&idmp_reassembly_table, tvb, offset,
 647                                         pinfo, dst_ref, NULL,
 648                                         idmp_length, !idmp_final);
 649
 650         if(fd_head && fd_head->next) {
 651             proto_tree_add_item(tree, hf_idmp_segment_data, tvb, offset, (idmp_length) ? -1 : 0, ENC_NA);
 652
 653             if (idmp_final) {
 654                 /* This is the last segment */
 655                 tvb = process_reassembled_data (tvb, offset, pinfo,
 656                                                 "Reassembled IDMP", fd_head, &idmp_frag_items, NULL, tree);
 657                 offset = 0;
 658             } else if (pinfo->num != fd_head->reassembled_in) {
 659                 /* Add a "Reassembled in" link if not reassembled in this frame */
 660                 proto_tree_add_uint (tree, hf_idmp_reassembled_in,
 661                                      tvb, 0, 0, fd_head->reassembled_in);
 662             }
 663         }
 664
 665     } else {
 666         if(!idmp_final) {
 667
 668             col_append_fstr(pinfo->cinfo, COL_INFO, " [IDMP fragment, %u byte%s, IDMP reassembly not enabled]",
 669                                 idmp_length, plurality(idmp_length, "", "s"));
 670
 671             proto_tree_add_bytes_format_value(tree, hf_idmp_segment_data, tvb, offset, (idmp_length) ? -1 : 0,
 672                                 NULL, "(IDMP reassembly not enabled)");
 673         }
 674     }
 675     /* not reassembling - just dissect */
 676     if(idmp_final) {
 677         asn1_ctx.private_data = &session;
 678         dissect_idmp_IDM_PDU(false, tvb, offset, &asn1_ctx, tree, hf_idmp_PDU);
 679     }
 680
 681     return tvb_captured_length(tvb);
 682 }
 683
 684 static unsigned get_idmp_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb,
 685                               int offset, void *data _U_)
 686 {
 687     uint32_t len;
 688
 689     len = tvb_get_ntohl(tvb, offset + 2);
 690
 691     return len + 6;
 692 }
 693
 694 static int dissect_idmp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data)
 695 {
 696     tcp_dissect_pdus(tvb, pinfo, parent_tree, idmp_desegment, 0, get_idmp_pdu_len, dissect_idmp, data);
 697         return tvb_captured_length(tvb);
 698 }
 699
 700 static void idmp_reassemble_cleanup(void)
 701 {
 702     protocolID = NULL; // packet scoped
 703     saved_protocolID = NULL; // epan scoped copy of protocolID
 704     opcode = -1;
 705 }
 706
 707 /*--- proto_register_idmp -------------------------------------------*/
 708 void proto_register_idmp(void)
 709 {
 710     /* List of fields */
 711     static hf_register_info hf[] = {
 712         { &hf_idmp_version,
 713           { "version", "idmp.version",
 714             FT_INT8, BASE_DEC, NULL, 0,
 715             "idmp.INTEGER", HFILL }},
 716         { &hf_idmp_final,
 717           { "final", "idmp.final",
 718             FT_BOOLEAN, BASE_NONE, NULL, 0,
 719             "idmp.BOOLEAN", HFILL }},
 720         { &hf_idmp_length,
 721           { "length", "idmp.length",
 722             FT_INT32, BASE_DEC, NULL, 0,
 723             "idmp.INTEGER", HFILL }},
 724         { &hf_idmp_PDU,
 725           { "IDM-PDU", "idmp.pdu",
 726             FT_UINT32, BASE_DEC, VALS(idmp_IDM_PDU_vals), 0,
 727             "idmp.PDU", HFILL }},
 728         /* Fragment entries */
 729         { &hf_idmp_fragments,
 730           { "IDMP fragments", "idmp.fragments", FT_NONE, BASE_NONE,
 731             NULL, 0x00, NULL, HFILL } },
 732         { &hf_idmp_fragment,
 733           { "IDMP fragment", "idmp.fragment", FT_FRAMENUM, BASE_NONE,
 734             NULL, 0x00, NULL, HFILL } },
 735         { &hf_idmp_fragment_overlap,
 736           { "IDMP fragment overlap", "idmp.fragment.overlap", FT_BOOLEAN,
 737             BASE_NONE, NULL, 0x00, NULL, HFILL } },
 738         { &hf_idmp_fragment_overlap_conflicts,
 739           { "IDMP fragment overlapping with conflicting data",
 740             "idmp.fragment.overlap.conflicts", FT_BOOLEAN, BASE_NONE,
 741             NULL, 0x00, NULL, HFILL } },
 742         { &hf_idmp_fragment_multiple_tails,
 743           { "IDMP has multiple tail fragments",
 744             "idmp.fragment.multiple_tails", FT_BOOLEAN, BASE_NONE,
 745             NULL, 0x00, NULL, HFILL } },
 746         { &hf_idmp_fragment_too_long_fragment,
 747           { "IDMP fragment too long", "idmp.fragment.too_long_fragment",
 748             FT_BOOLEAN, BASE_NONE, NULL, 0x00, NULL, HFILL } },
 749         { &hf_idmp_fragment_error,
 750           { "IDMP defragmentation error", "idmp.fragment.error", FT_FRAMENUM,
 751             BASE_NONE, NULL, 0x00, NULL, HFILL } },
 752         { &hf_idmp_fragment_count,
 753           { "IDMP fragment count", "idmp.fragment.count", FT_UINT32, BASE_DEC,
 754             NULL, 0x00, NULL, HFILL } },
 755         { &hf_idmp_reassembled_in,
 756           { "Reassembled IDMP in frame", "idmp.reassembled.in", FT_FRAMENUM, BASE_NONE,
 757             NULL, 0x00, "This IDMP packet is reassembled in this frame", HFILL } },
 758         { &hf_idmp_reassembled_length,
 759           { "Reassembled IDMP length", "idmp.reassembled.length", FT_UINT32, BASE_DEC,
 760             NULL, 0x00, "The total length of the reassembled payload", HFILL } },
 761         { &hf_idmp_segment_data,
 762           { "IDMP segment data", "idmp.segment_data", FT_BYTES, BASE_NONE,
 763             NULL, 0x00, NULL, HFILL } },
 764
 765     { &hf_idmp_bind,
 766       { "bind", "idmp.bind_element",
 767         FT_NONE, BASE_NONE, NULL, 0,
 768         "IdmBind", HFILL }},
 769     { &hf_idmp_bindResult,
 770       { "bindResult", "idmp.bindResult_element",
 771         FT_NONE, BASE_NONE, NULL, 0,
 772         "IdmBindResult", HFILL }},
 773     { &hf_idmp_bindError,
 774       { "bindError", "idmp.bindError_element",
 775         FT_NONE, BASE_NONE, NULL, 0,
 776         "IdmBindError", HFILL }},
 777     { &hf_idmp_request,
 778       { "request", "idmp.request_element",
 779         FT_NONE, BASE_NONE, NULL, 0,
 780         NULL, HFILL }},
 781     { &hf_idmp_idm_result,
 782       { "result", "idmp.result_element",
 783         FT_NONE, BASE_NONE, NULL, 0,
 784         "IdmResult", HFILL }},
 785     { &hf_idmp_idm_error,
 786       { "error", "idmp.error_element",
 787         FT_NONE, BASE_NONE, NULL, 0,
 788         NULL, HFILL }},
 789     { &hf_idmp_reject,
 790       { "reject", "idmp.reject_element",
 791         FT_NONE, BASE_NONE, NULL, 0,
 792         "IdmReject", HFILL }},
 793     { &hf_idmp_unbind,
 794       { "unbind", "idmp.unbind_element",
 795         FT_NONE, BASE_NONE, NULL, 0,
 796         NULL, HFILL }},
 797     { &hf_idmp_abort,
 798       { "abort", "idmp.abort",
 799         FT_UINT32, BASE_DEC, VALS(idmp_Abort_vals), 0,
 800         NULL, HFILL }},
 801     { &hf_idmp_startTLS,
 802       { "startTLS", "idmp.startTLS_element",
 803         FT_NONE, BASE_NONE, NULL, 0,
 804         NULL, HFILL }},
 805     { &hf_idmp_tLSResponse,
 806       { "tLSResponse", "idmp.tLSResponse",
 807         FT_UINT32, BASE_DEC, VALS(idmp_TLSResponse_vals), 0,
 808         NULL, HFILL }},
 809     { &hf_idmp_protocolID,
 810       { "protocolID", "idmp.protocolID",
 811         FT_OID, BASE_NONE, NULL, 0,
 812         "OBJECT_IDENTIFIER", HFILL }},
 813     { &hf_idmp_callingAETitle,
 814       { "callingAETitle", "idmp.callingAETitle",
 815         FT_UINT32, BASE_DEC, VALS(x509ce_GeneralName_vals), 0,
 816         "GeneralName", HFILL }},
 817     { &hf_idmp_calledAETitle,
 818       { "calledAETitle", "idmp.calledAETitle",
 819         FT_UINT32, BASE_DEC, VALS(x509ce_GeneralName_vals), 0,
 820         "GeneralName", HFILL }},
 821     { &hf_idmp_bind_argument,
 822       { "argument", "idmp.argument_element",
 823         FT_NONE, BASE_NONE, NULL, 0,
 824         "Bind_argument", HFILL }},
 825     { &hf_idmp_respondingAETitle,
 826       { "respondingAETitle", "idmp.respondingAETitle",
 827         FT_UINT32, BASE_DEC, VALS(x509ce_GeneralName_vals), 0,
 828         "GeneralName", HFILL }},
 829     { &hf_idmp_bind_result,
 830       { "result", "idmp.result_element",
 831         FT_NONE, BASE_NONE, NULL, 0,
 832         "Bind_result", HFILL }},
 833     { &hf_idmp_bind_errcode,
 834       { "errcode", "idmp.errcode_element",
 835         FT_NONE, BASE_NONE, NULL, 0,
 836         "Bind_errcode", HFILL }},
 837     { &hf_idmp_aETitleError,
 838       { "aETitleError", "idmp.aETitleError",
 839         FT_UINT32, BASE_DEC, VALS(idmp_T_aETitleError_vals), 0,
 840         NULL, HFILL }},
 841     { &hf_idmp_bind_error,
 842       { "error", "idmp.error_element",
 843         FT_NONE, BASE_NONE, NULL, 0,
 844         "Bind_error", HFILL }},
 845     { &hf_idmp_invokeID,
 846       { "invokeID", "idmp.invokeID",
 847         FT_INT32, BASE_DEC, NULL, 0,
 848         "INTEGER", HFILL }},
 849     { &hf_idmp_opcode,
 850       { "opcode", "idmp.opcode",
 851         FT_UINT32, BASE_DEC, VALS(idmp_Code_vals), 0,
 852         "Code", HFILL }},
 853     { &hf_idmp_argument,
 854       { "argument", "idmp.argument_element",
 855         FT_NONE, BASE_NONE, NULL, 0,
 856         NULL, HFILL }},
 857     { &hf_idmp_idm_invokeID,
 858       { "invokeID", "idmp.idmResult.invokeID",
 859         FT_UINT32, BASE_DEC, VALS(idmp_InvokeId_vals), 0,
 860         NULL, HFILL }},
 861     { &hf_idmp_result,
 862       { "result", "idmp.result_element",
 863         FT_NONE, BASE_NONE, NULL, 0,
 864         NULL, HFILL }},
 865     { &hf_idmp_errcode,
 866       { "errcode", "idmp.errcode_element",
 867         FT_NONE, BASE_NONE, NULL, 0,
 868         NULL, HFILL }},
 869     { &hf_idmp_error,
 870       { "error", "idmp.error_element",
 871         FT_NONE, BASE_NONE, NULL, 0,
 872         NULL, HFILL }},
 873     { &hf_idmp_reason,
 874       { "reason", "idmp.reason",
 875         FT_UINT32, BASE_DEC, VALS(idmp_T_reason_vals), 0,
 876         NULL, HFILL }},
 877     { &hf_idmp_local,
 878       { "local", "idmp.local",
 879         FT_INT32, BASE_DEC, NULL, 0,
 880         NULL, HFILL }},
 881     { &hf_idmp_global,
 882       { "global", "idmp.global",
 883         FT_OID, BASE_NONE, NULL, 0,
 884         "OBJECT_IDENTIFIER", HFILL }},
 885     { &hf_idmp_present,
 886       { "present", "idmp.present",
 887         FT_INT32, BASE_DEC, NULL, 0,
 888         "INTEGER", HFILL }},
 889     { &hf_idmp_absent,
 890       { "absent", "idmp.absent_element",
 891         FT_NONE, BASE_NONE, NULL, 0,
 892         NULL, HFILL }},
 893     };
 894
 895     /* List of subtrees */
 896     static int *ett[] = {
 897         &ett_idmp,
 898         &ett_idmp_fragment,
 899         &ett_idmp_fragments,
 900     &ett_idmp_IDM_PDU,
 901     &ett_idmp_IdmBind,
 902     &ett_idmp_IdmBindResult,
 903     &ett_idmp_IdmBindError,
 904     &ett_idmp_Request,
 905     &ett_idmp_IdmResult,
 906     &ett_idmp_Error,
 907     &ett_idmp_IdmReject,
 908     &ett_idmp_Code,
 909     &ett_idmp_InvokeId,
 910     };
 911     module_t *idmp_module;
 912
 913     /* Register protocol */
 914     proto_idmp = proto_register_protocol(PNAME, PSNAME, PFNAME);
 915
 916     /* Register fields and subtrees */
 917     proto_register_field_array(proto_idmp, hf, array_length(hf));
 918     proto_register_subtree_array(ett, array_length(ett));
 919
 920     idmp_handle = register_dissector("idmp", dissect_idmp_tcp, proto_idmp);
 921
 922     register_cleanup_routine (&idmp_reassemble_cleanup);
 923     reassembly_table_register (&idmp_reassembly_table,
 924                            &addresses_reassembly_table_functions);
 925
 926
 927     /* Register our configuration options for IDMP, particularly our port */
 928
 929     idmp_module = prefs_register_protocol_subtree("OSI/X.500", proto_idmp, NULL);
 930
 931     prefs_register_bool_preference(idmp_module, "desegment_idmp_messages",
 932                                    "Reassemble IDMP messages spanning multiple TCP segments",
 933                                    "Whether the IDMP dissector should reassemble messages spanning multiple TCP segments."
 934                                    " To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
 935                                    &idmp_desegment);
 936
 937     prefs_register_bool_preference(idmp_module, "reassemble",
 938                                    "Reassemble segmented IDMP datagrams",
 939                                    "Whether segmented IDMP datagrams should be reassembled."
 940                                    " To use this option, you must also enable"
 941                                    " \"Allow subdissectors to reassemble TCP streams\""
 942                                    " in the TCP protocol settings.", &idmp_reassemble);
 943 }
 944
 945
 946 /*--- proto_reg_handoff_idm --- */
 947 void proto_reg_handoff_idm(void) {
 948     dissector_add_uint_with_preference("tcp.port", IDMP_TCP_PORT, idmp_handle);
 949 }