packet-dcerpc-epm.c

   1 /* packet-dcerpc-epm.c
   2  * Routines for dcerpc endpoint mapper dissection
   3  * Copyright 2001, Todd Sabin <tas@webspan.net>
   4  *
   5  * $Id: packet-dcerpc-epm.c,v 1.20 2003/06/26 04:30:27 tpot Exp $
   6  *
   7  * Ethereal - Network traffic analyzer
   8  * By Gerald Combs <gerald@ethereal.com>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  24  */
  25
  26 #ifdef HAVE_CONFIG_H
  27 #include "config.h"
  28 #endif
  29
  30
  31 #include <string.h>
  32
  33 #include <glib.h>
  34 #include <epan/packet.h>
  35 #include "packet-dcerpc.h"
  36 #include "packet-dcerpc-nt.h"
  37
  38
  39 static int proto_epm = -1;
  40
  41 static int hf_epm_opnum = -1;
  42 static int hf_epm_inquiry_type = -1;
  43 static int hf_epm_object = -1;
  44 static int hf_epm_if_id = -1;
  45 static int hf_epm_ver_maj = -1;
  46 static int hf_epm_ver_min = -1;
  47 static int hf_epm_ver_opt = -1;
  48 static int hf_epm_hnd = -1;
  49 static int hf_epm_max_ents = -1;
  50 static int hf_epm_num_ents = -1;
  51 static int hf_epm_uuid = -1;
  52 static int hf_epm_tower_length = -1;
  53 static int hf_epm_tower_data = -1;
  54 static int hf_epm_max_towers = -1;
  55 static int hf_epm_num_towers = -1;
  56 static int hf_epm_rc = -1;
  57 static int hf_epm_replace = -1;
  58 static int hf_epm_tower_num_floors = -1;
  59 static int hf_epm_tower_rhs_len = -1;
  60 static int hf_epm_tower_lhs_len = -1;
  61 static int hf_epm_tower_proto_id = -1;
  62 static int hf_epm_annotation = -1;
  63 static int hf_epm_ann_offset = -1;
  64 static int hf_epm_ann_len = -1;
  65 static int hf_epm_proto_named_pipes = -1;
  66 static int hf_epm_proto_netbios_name = -1;
  67 static int hf_epm_proto_ip = -1;
  68 static int hf_epm_proto_udp_port = -1;
  69 static int hf_epm_proto_tcp_port = -1;
  70
  71 static gint ett_epm = -1;
  72 static gint ett_epm_tower_floor = -1;
  73 static gint ett_epm_entry = -1;
  74
  75 static e_uuid_t uuid_epm = { 0xe1af8308, 0x5d1f, 0x11c9, { 0x91, 0xa4, 0x08, 0x00, 0x2b, 0x14, 0xa0, 0xfa } };
  76 static guint16  ver_epm = 3;
  77
  78
  79 /* typedef struct {
  80       unsigned int tower_len,
  81       [size_is(tower_len)] char tower[];
  82    } twr_t, *twr_p_t;
  83 */
  84 static int epm_dissect_tower (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, char *drep);
  85
  86
  87 static int
  88 epm_dissect_pointer_IF_ID(tvbuff_t *tvb, int offset,
  89                              packet_info *pinfo, proto_tree *tree,
  90                              char *drep)
  91 {
  92         dcerpc_info *di;
  93
  94         di=pinfo->private_data;
  95         offset = dissect_ndr_uuid_t (tvb, offset, pinfo, tree, drep,
  96                                      di->hf_index, NULL);
  97         offset = dissect_ndr_uint16 (tvb, offset, pinfo, tree, drep,
  98                                      hf_epm_ver_maj, NULL);
  99         offset = dissect_ndr_uint16 (tvb, offset, pinfo, tree, drep,
 100                                      hf_epm_ver_min, NULL);
 101         return offset;
 102 }
 103
 104 static int
 105 epm_dissect_pointer_UUID(tvbuff_t *tvb, int offset,
 106                              packet_info *pinfo, proto_tree *tree,
 107                              char *drep)
 108 {
 109         dcerpc_info *di;
 110
 111         di=pinfo->private_data;
 112         offset = dissect_ndr_uuid_t (tvb, offset, pinfo, tree, drep,
 113                                      di->hf_index, NULL);
 114         return offset;
 115 }
 116
 117 static int
 118 epm_dissect_ept_lookup_rqst (tvbuff_t *tvb, int offset,
 119                              packet_info *pinfo, proto_tree *tree,
 120                              char *drep)
 121 {
 122     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 123                                  hf_epm_inquiry_type, NULL);
 124
 125     offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
 126                              epm_dissect_pointer_UUID, NDR_POINTER_PTR,
 127                              "Object:", hf_epm_object);
 128
 129     offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
 130                              epm_dissect_pointer_IF_ID, NDR_POINTER_PTR,
 131                              "Interface:", hf_epm_if_id);
 132
 133     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 134                                  hf_epm_ver_opt, NULL);
 135
 136     offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
 137                                   hf_epm_hnd, NULL);
 138
 139     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 140                                  hf_epm_max_ents, NULL);
 141     return offset;
 142 }
 143
 144
 145 static int
 146 epm_dissect_ept_entry_t(tvbuff_t *tvb, int offset,
 147                              packet_info *pinfo, proto_tree *parent_tree,
 148                              char *drep)
 149 {
 150     proto_item *item=NULL;
 151     proto_tree *tree=NULL;
 152     int old_offset=offset;
 153     guint32 len;
 154     gint strlen;
 155     dcerpc_info *di;
 156     const char *str;
 157
 158     di=pinfo->private_data;
 159     if(di->conformant_run){
 160         return offset;
 161     }
 162
 163     if(parent_tree){
 164         item = proto_tree_add_text(parent_tree, tvb, offset, -1, "Entry:");
 165         tree = proto_item_add_subtree(item, ett_epm_entry);
 166     }
 167
 168     offset = dissect_ndr_uuid_t (tvb, offset, pinfo, tree, drep,
 169                                  hf_epm_object, NULL);
 170
 171     offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
 172                              epm_dissect_tower, NDR_POINTER_PTR,
 173                              "Tower pointer:", -1);
 174
 175     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 176                                  hf_epm_ann_offset, NULL);
 177     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 178                                  hf_epm_ann_len, &len);
 179     str=(const char *)tvb_get_ptr(tvb, offset, -1);
 180     strlen=len;
 181     strlen=MIN(strlen,tvb_length_remaining(tvb, offset));
 182     proto_tree_add_item(tree, hf_epm_annotation, tvb, offset, len, TRUE);
 183     offset += len;
 184
 185     if(str&&str[0]){
 186         if(parent_tree) {
 187             proto_item_append_text(item, " Service:%*s ", strlen, str);
 188             proto_item_append_text(tree->parent, " Service:%*s ", strlen, str);
 189         }
 190         if (check_col(pinfo->cinfo, COL_INFO)) {
 191             col_append_fstr(pinfo->cinfo, COL_INFO, ", Service:%*s", strlen, str);
 192         }
 193     }
 194
 195     proto_item_set_len(item, offset-old_offset);
 196     return offset;
 197 }
 198
 199 static int
 200 epm_dissect_ept_entry_t_array(tvbuff_t *tvb, int offset,
 201                              packet_info *pinfo, proto_tree *tree,
 202                              char *drep)
 203 {
 204     offset = dissect_ndr_ucvarray(tvb, offset, pinfo, tree, drep,
 205                              epm_dissect_ept_entry_t);
 206
 207     return offset;
 208 }
 209
 210 static int
 211 epm_dissect_ept_lookup_resp (tvbuff_t *tvb, int offset,
 212                              packet_info *pinfo, proto_tree *tree,
 213                              char *drep)
 214 {
 215     offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
 216                                   hf_epm_hnd, NULL);
 217
 218     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 219                                  hf_epm_num_ents, NULL);
 220
 221     offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
 222                              epm_dissect_ept_entry_t_array, NDR_POINTER_REF,
 223                              "Entries:", -1);
 224
 225     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 226                                  hf_epm_rc, NULL);
 227
 228     return offset;
 229 }
 230
 231 #if 0
 232 static int
 233 epm_dissect_uuid (tvbuff_t *tvb, int offset,
 234                              packet_info *pinfo, proto_tree *tree,
 235                              char *drep)
 236 {
 237     offset = dissect_ndr_uuid_t (tvb, offset, pinfo, tree, drep,
 238                                   hf_epm_uuid, NULL);
 239     return offset;
 240 }
 241 #endif
 242
 243
 244
 245 static const value_string proto_id_vals[] = {
 246         { 0x00, "OSI OID"},
 247         { 0x0d, "UUID"},
 248         { 0x05, "OSI TP4"},
 249         { 0x06, "OSI CLNS or DNA Routing"},
 250         { 0x07, "DOD TCP"},
 251         { 0x08, "DOD UDP"},
 252         { 0x09, "DOD IP"},
 253         { 0x0a, "RPC connectionless protocol"},
 254         { 0x0b, "RPC connection-oriented protocol"},
 255         { 0x02, "DNA Session Control"},
 256         { 0x03, "DNA Session Control V3"},
 257         { 0x04, "DNA NSP Transport"},
 258         { 0x0f, "Named Pipes"},
 259         { 0x10, "Named Pipes"},
 260         { 0x11, "NetBIOS"},
 261         { 0x12, "NetBEUI"},
 262         { 0x13, "Netware SPX"},
 263         { 0x14, "Netware IPX"},
 264         { 0x16, "Appletalk Stream"},
 265         { 0x17, "Appletalk Datagram"},
 266         { 0x18, "Appletalk"},
 267         { 0x19, "NetBIOS"},
 268         { 0x1a, "Vines SPP"},
 269         { 0x1b, "Vines IPC"},
 270         { 0x1c, "StreetTalk"},
 271         { 0x20, "Unix Domain Socket"},
 272         { 0x21, "null"},
 273         { 0x22, "NetBIOS"},
 274         { 0, NULL},
 275 };
 276
 277
 278 /* XXX this function assumes LE encoding. can not use the NDR routines
 279    since they assume padding.
 280 */
 281 static int
 282 epm_dissect_tower_data (tvbuff_t *tvb, int offset,
 283                              packet_info *pinfo, proto_tree *tree,
 284                              char *drep)
 285 {
 286     guint16 num_floors, i;
 287     dcerpc_info *di;
 288
 289     di=pinfo->private_data;
 290     if(di->conformant_run){
 291         return offset;
 292     }
 293
 294     num_floors = tvb_get_letohs(tvb, offset);
 295     proto_tree_add_uint(tree, hf_epm_tower_num_floors, tvb, offset, 2, num_floors);
 296     offset += 2;
 297
 298     for(i=1;i<=num_floors;i++){
 299         proto_item *it = NULL;
 300         proto_tree *tr = NULL;
 301         int old_offset = offset;
 302         guint16 len;
 303         guint8 proto_id;
 304         e_uuid_t uuid;
 305
 306         it = proto_tree_add_text(tree, tvb, offset, 0, "Floor %d  ", i);
 307         tr = proto_item_add_subtree(it, ett_epm_tower_floor);
 308
 309         len = tvb_get_letohs(tvb, offset);
 310         proto_tree_add_uint(tr, hf_epm_tower_lhs_len, tvb, offset, 2, len);
 311         offset += 2;
 312
 313         proto_id = tvb_get_guint8(tvb, offset);
 314         proto_tree_add_uint(tr, hf_epm_tower_proto_id, tvb, offset, 1, proto_id);
 315
 316         switch(proto_id){
 317         case 0x0d: /* UUID */
 318             dcerpc_tvb_get_uuid (tvb, offset+1, drep, &uuid);
 319             proto_tree_add_string_format (tr, hf_epm_uuid, tvb, offset+1, 16, "",
 320                           "UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
 321                           uuid.Data1, uuid.Data2, uuid.Data3,
 322                           uuid.Data4[0], uuid.Data4[1],
 323                           uuid.Data4[2], uuid.Data4[3],
 324                           uuid.Data4[4], uuid.Data4[5],
 325                           uuid.Data4[6], uuid.Data4[7]);
 326             proto_tree_add_text(tr, tvb, offset+17, 2, "Version %d.%d", tvb_get_guint8(tvb, offset+18), tvb_get_guint8(tvb, offset+17));
 327             break;
 328         }
 329         offset += len;
 330
 331         len = tvb_get_letohs(tvb, offset);
 332         proto_tree_add_uint(tr, hf_epm_tower_rhs_len, tvb, offset, 2, len);
 333         offset += 2;
 334
 335         switch(proto_id){
 336         case 0x07: /* TCP this one is always big endian */
 337             proto_tree_add_item(tr, hf_epm_proto_tcp_port, tvb, offset, 2, FALSE);
 338             proto_item_append_text(tr, "TCP Port:%d", tvb_get_ntohs(tvb, offset));
 339             break;
 340
 341         case 0x08: /* UDP this one is always big endian */
 342             proto_tree_add_item(tr, hf_epm_proto_udp_port, tvb, offset, 2, FALSE);
 343             proto_item_append_text(tr, "UDP Port:%d", tvb_get_ntohs(tvb, offset));
 344             break;
 345
 346         case 0x09: /* IP this one is always big endian */
 347             proto_tree_add_item(tr, hf_epm_proto_ip, tvb, offset, 4, TRUE);
 348             proto_item_append_text(tr, "IP:%s", ip_to_str(tvb_get_ptr(tvb, offset, 4)));
 349             break;
 350
 351         case 0x0f: /* \\PIPE\xxx   named pipe */
 352             proto_tree_add_item(tr, hf_epm_proto_named_pipes, tvb, offset, len, TRUE);
 353             proto_item_append_text(tr, "NamedPipe:%*s",MIN(len,tvb_length_remaining(tvb, offset)), tvb_get_ptr(tvb, offset, -1));
 354             break;
 355
 356         case 0x10: /* PIPENAME  named pipe */
 357             proto_tree_add_item(tr, hf_epm_proto_named_pipes, tvb, offset, len, TRUE);
 358             proto_item_append_text(tr, "PIPE:%*s",MIN(len,tvb_length_remaining(tvb, offset)), tvb_get_ptr(tvb, offset, -1));
 359             break;
 360
 361         case 0x11: /* \\NETBIOS   netbios name */
 362             proto_tree_add_item(tr, hf_epm_proto_netbios_name, tvb, offset, len, TRUE);
 363             proto_item_append_text(tr, "NetBIOS:%*s",MIN(len,tvb_length_remaining(tvb, offset)), tvb_get_ptr(tvb, offset, -1));
 364             break;
 365         default:
 366             if(len){
 367                 proto_tree_add_text(tr, tvb, offset, len, "not decoded yet");
 368             }
 369         }
 370         offset += len;
 371
 372         proto_item_set_len(it, offset-old_offset);
 373     }
 374     return offset;
 375 }
 376
 377 /* typedef struct {
 378       unsigned int tower_len,
 379       [size_is(tower_len)] char tower[];
 380    } twr_t, *twr_p_t;
 381 */
 382 static int
 383 epm_dissect_tower (tvbuff_t *tvb, int offset,
 384                              packet_info *pinfo, proto_tree *tree,
 385                              char *drep)
 386 {
 387     guint32 len;
 388     dcerpc_info *di;
 389
 390     di=pinfo->private_data;
 391     if(di->conformant_run){
 392         return offset;
 393     }
 394
 395     /* first one is the header of the conformant array, second one is the
 396        length field */
 397     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 398                                  hf_epm_tower_length, &len);
 399     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 400                                  hf_epm_tower_length, NULL);
 401     offset = epm_dissect_tower_data(tvb, offset, pinfo, tree, drep);
 402
 403     return offset;
 404 }
 405 static int
 406 epm_dissect_tower_pointer (tvbuff_t *tvb, int offset,
 407                              packet_info *pinfo, proto_tree *tree,
 408                              char *drep)
 409 {
 410     offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
 411                              epm_dissect_tower, NDR_POINTER_PTR,
 412                              "Tower pointer:", -1);
 413     return offset;
 414 }
 415 static int
 416 epm_dissect_tower_array (tvbuff_t *tvb, int offset,
 417                              packet_info *pinfo, proto_tree *tree,
 418                              char *drep)
 419 {
 420     offset = dissect_ndr_ucvarray(tvb, offset, pinfo, tree, drep,
 421                              epm_dissect_tower_pointer);
 422
 423     return offset;
 424 }
 425
 426 static int
 427 epm_dissect_ept_map_rqst (tvbuff_t *tvb, int offset,
 428                              packet_info *pinfo, proto_tree *tree,
 429                              char *drep)
 430 {
 431     /* [in] handle_t h */
 432     offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
 433                                   hf_epm_hnd, NULL);
 434
 435 #if 0
 436     /* according to opengroup we should have an uuid pointer here.
 437        in my w2k captures i can not see any such thing */
 438     /* [in, ptr] uuid_p_t object */
 439     offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
 440                              epm_dissect_uuid, NDR_POINTER_PTR,
 441                              "UUID pointer:", -1, 1);
 442 #endif
 443
 444     /* [in, ptr] twr_p_t map_tower */
 445     offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
 446                              epm_dissect_tower, NDR_POINTER_PTR,
 447                              "Tower pointer:", -1);
 448
 449     /* [in, out] ept_lookup_handle_t *entry_handle */
 450     offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
 451                                   hf_epm_hnd, NULL);
 452
 453     /* [in] unsigned32 max_towers */
 454     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 455                                  hf_epm_max_towers, NULL);
 456
 457     return offset;
 458 }
 459
 460 static int
 461 epm_dissect_ept_map_resp (tvbuff_t *tvb, int offset,
 462                              packet_info *pinfo, proto_tree *tree,
 463                              char *drep)
 464 {
 465     /* [in, out] ept_lookup_handle_t *entry_handle */
 466     offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
 467                                   hf_epm_hnd, NULL);
 468
 469     /* [out, ptr] unsigned32 *num_towers */
 470     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 471                                  hf_epm_num_towers, NULL);
 472
 473     /* [out, length_is(*num_towers), size_is(max_towers), ptr] twr_p_t towers[] */
 474     offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
 475                              epm_dissect_tower_array, NDR_POINTER_REF,
 476                              "Tower array:", -1);
 477
 478     /* [out] error_status_t *status */
 479     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 480                                  hf_epm_rc, NULL);
 481
 482     return offset;
 483 }
 484
 485 static int
 486 epm_dissect_ept_entry_t_ucarray(tvbuff_t *tvb, int offset,
 487                              packet_info *pinfo, proto_tree *tree,
 488                              char *drep)
 489 {
 490     offset = dissect_ndr_ucarray(tvb, offset, pinfo, tree, drep,
 491                              epm_dissect_ept_entry_t);
 492
 493     return offset;
 494 }
 495
 496 static int
 497 epm_dissect_ept_insert_rqst (tvbuff_t *tvb, int offset,
 498                              packet_info *pinfo, proto_tree *tree,
 499                              char *drep)
 500 {
 501     /* [in, out] ept_lookup_handle_t *entry_handle */
 502     offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
 503                                   hf_epm_hnd, NULL);
 504
 505     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 506                                  hf_epm_num_ents, NULL);
 507
 508     offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
 509                              epm_dissect_ept_entry_t_ucarray, NDR_POINTER_REF,
 510                              "Entries:", -1);
 511
 512     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 513                                  hf_epm_replace, NULL);
 514
 515     return offset;
 516 }
 517
 518
 519
 520 static int
 521 epm_dissect_ept_insert_resp (tvbuff_t *tvb, int offset,
 522                              packet_info *pinfo, proto_tree *tree,
 523                              char *drep)
 524 {
 525     /* [out] error_status_t *status */
 526     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 527                                  hf_epm_rc, NULL);
 528
 529     return offset;
 530 }
 531
 532
 533 static int
 534 epm_dissect_ept_delete_rqst (tvbuff_t *tvb, int offset,
 535                              packet_info *pinfo, proto_tree *tree,
 536                              char *drep)
 537 {
 538     offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
 539                                   hf_epm_hnd, NULL);
 540
 541     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 542                                  hf_epm_num_ents, NULL);
 543
 544     offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
 545                              epm_dissect_ept_entry_t_ucarray, NDR_POINTER_REF,
 546                              "Entries:", -1);
 547
 548     return offset;
 549 }
 550
 551
 552
 553 static int
 554 epm_dissect_ept_delete_resp (tvbuff_t *tvb, int offset,
 555                              packet_info *pinfo, proto_tree *tree,
 556                              char *drep)
 557 {
 558     /* [out] error_status_t *status */
 559     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 560                                  hf_epm_rc, NULL);
 561
 562     return offset;
 563 }
 564
 565
 566
 567 static int
 568 epm_dissect_ept_lookup_handle_free_rqst (tvbuff_t *tvb, int offset,
 569                              packet_info *pinfo, proto_tree *tree,
 570                              char *drep)
 571 {
 572     offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
 573                                   hf_epm_hnd, NULL);
 574
 575     return offset;
 576 }
 577
 578 static int
 579 epm_dissect_ept_lookup_handle_free_resp (tvbuff_t *tvb, int offset,
 580                              packet_info *pinfo, proto_tree *tree,
 581                              char *drep)
 582 {
 583     offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
 584                                   hf_epm_hnd, NULL);
 585
 586     offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
 587                                  hf_epm_rc, NULL);
 588
 589     return offset;
 590 }
 591
 592
 593 static dcerpc_sub_dissector epm_dissectors[] = {
 594     { 0, "Insert",
 595         epm_dissect_ept_insert_rqst,
 596         epm_dissect_ept_insert_resp },
 597     { 1, "Delete",
 598         epm_dissect_ept_delete_rqst,
 599         epm_dissect_ept_delete_resp },
 600     { 2, "Lookup",
 601         epm_dissect_ept_lookup_rqst,
 602         epm_dissect_ept_lookup_resp },
 603     { 3, "Map",
 604         epm_dissect_ept_map_rqst,
 605         epm_dissect_ept_map_resp },
 606     { 4, "LookupHandleFree",
 607         epm_dissect_ept_lookup_handle_free_rqst,
 608         epm_dissect_ept_lookup_handle_free_resp },
 609     { 5, "InqObject", NULL, NULL },
 610     { 6, "MgmtDelete", NULL, NULL },
 611     { 0, NULL, NULL, NULL }
 612 };
 613
 614 void
 615 proto_register_epm (void)
 616 {
 617         static hf_register_info hf[] = {
 618         { &hf_epm_opnum,
 619           { "Operation", "epm.opnum", FT_UINT16, BASE_DEC,
 620             NULL, 0x0, "Operation", HFILL }},
 621         { &hf_epm_inquiry_type,
 622           { "Inquiry type", "epm.inq_type", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
 623         { &hf_epm_object,
 624           { "Object", "epm.object", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
 625         { &hf_epm_if_id,
 626           { "Interface", "epm.if_id", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
 627         { &hf_epm_ver_maj,
 628           { "Version Major", "epm.ver_maj", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
 629         { &hf_epm_ver_min,
 630           { "Version Minor", "epm.ver_min", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
 631         { &hf_epm_ver_opt,
 632           { "Version Option", "epm.ver_opt", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
 633         { &hf_epm_hnd,
 634           { "Handle", "epm.hnd", FT_BYTES, BASE_NONE, NULL, 0x0, "Context handle", HFILL }},
 635         { &hf_epm_max_ents,
 636           { "Max entries", "epm.max_ents", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
 637         { &hf_epm_num_ents,
 638           { "Num entries", "epm.num_ents", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
 639         { &hf_epm_uuid,
 640           { "UUID", "epm.uuid", FT_STRING, BASE_NONE, NULL, 0x0, "UUID", HFILL }},
 641         { &hf_epm_annotation,
 642           { "Annotation", "epm.annotation", FT_STRING, BASE_NONE, NULL, 0x0, "Annotation", HFILL }},
 643         { &hf_epm_proto_named_pipes,
 644           { "Named Pipe", "epm.proto.named_pipe", FT_STRING, BASE_NONE, NULL, 0x0, "Name of the named pipe for this service", HFILL }},
 645         { &hf_epm_proto_netbios_name,
 646           { "NetBIOS Name", "epm.proto.netbios_name", FT_STRING, BASE_NONE, NULL, 0x0, "NetBIOS name where this service can be found", HFILL }},
 647         { &hf_epm_tower_length,
 648           { "Length", "epm.tower.len", FT_UINT32, BASE_DEC, NULL, 0x0, "Length of tower data", HFILL }},
 649         { &hf_epm_tower_data,
 650           { "Tower", "epm.tower", FT_BYTES, BASE_HEX, NULL, 0x0, "Tower data", HFILL }},
 651         { &hf_epm_max_towers,
 652           { "Max Towers", "epm.max_towers", FT_UINT32, BASE_DEC, NULL, 0x0, "Maximum number of towers to return", HFILL }},
 653         { &hf_epm_num_towers,
 654           { "Num Towers", "epm.num_towers", FT_UINT32, BASE_DEC, NULL, 0x0, "Number number of towers to return", HFILL }},
 655         { &hf_epm_ann_offset,
 656           { "Annotation offset", "epm.ann_offset", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
 657         { &hf_epm_ann_len,
 658           { "Annotation length", "epm.ann_len", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
 659         { &hf_epm_rc,
 660           { "Return code", "epm.rc", FT_UINT32, BASE_HEX, NULL, 0x0, "EPM return value", HFILL }},
 661         { &hf_epm_replace,
 662           { "Replace", "epm.replace", FT_UINT8, BASE_DEC, NULL, 0x0, "Replace existing objects?", HFILL }},
 663         { &hf_epm_tower_num_floors,
 664           { "Number of floors", "epm.tower.num_floors", FT_UINT16, BASE_DEC, NULL, 0x0, "Number of floors in tower", HFILL }},
 665         { &hf_epm_proto_udp_port,
 666           { "UDP Port", "epm.proto.udp_port", FT_UINT16, BASE_DEC, NULL, 0x0, "UDP Port where this service can be found", HFILL }},
 667         { &hf_epm_proto_tcp_port,
 668           { "TCP Port", "epm.proto.tcp_port", FT_UINT16, BASE_DEC, NULL, 0x0, "TCP Port where this service can be found", HFILL }},
 669         { &hf_epm_tower_rhs_len,
 670           { "RHS Length", "epm.tower.rhs.len", FT_UINT16, BASE_DEC, NULL, 0x0, "Length of RHS data", HFILL }},
 671         { &hf_epm_tower_lhs_len,
 672           { "LHS Length", "epm.tower.lhs.len", FT_UINT16, BASE_DEC, NULL, 0x0, "Length of LHS data", HFILL }},
 673         { &hf_epm_proto_ip,
 674           { "IP", "epm.proto.ip", FT_IPv4, BASE_NONE, NULL, 0x0, "IP address where service is located", HFILL }},
 675         { &hf_epm_tower_proto_id,
 676           { "Protocol", "epm.tower.proto_id", FT_UINT8, BASE_HEX, VALS(proto_id_vals), 0x0, "Protocol identifier", HFILL }}
 677     };
 678
 679         static gint *ett[] = {
 680                 &ett_epm,
 681                 &ett_epm_tower_floor,
 682                 &ett_epm_entry
 683         };
 684         proto_epm = proto_register_protocol ("DCE/RPC Endpoint Mapper", "EPM", "epm");
 685         proto_register_field_array (proto_epm, hf, array_length (hf));
 686         proto_register_subtree_array (ett, array_length (ett));
 687 }
 688
 689 void
 690 proto_reg_handoff_epm (void)
 691 {
 692         header_field_info *hf_info;
 693
 694         /* Register the protocol as dcerpc */
 695         dcerpc_init_uuid (proto_epm, ett_epm, &uuid_epm, ver_epm, epm_dissectors, hf_epm_opnum);
 696
 697         /* Set opnum strings from subdissector list */
 698
 699         hf_info = proto_registrar_get_nth(hf_epm_opnum);
 700         hf_info->strings = value_string_from_subdissectors(
 701                 epm_dissectors, array_length(epm_dissectors));
 702 }