epan/dissectors/packet-fcsp.c

   1 /* packet-fc-sp.c
   2  * Routines for Fibre Channel Security Protocol (FC-SP)
   3  * This decoder is for FC-SP version 1.1
   4  * Copyright 2003, Dinesh G Dutt <ddutt@cisco.com>
   5  *
   6  * $Id$
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  * Copied from WHATEVER_FILE_YOU_USED (where "WHATEVER_FILE_YOU_USED"
  13  * is a dissector file; if you just copied this from README.developer,
  14  * don't bother with the "Copied from" - you don't even need to put
  15  * in a "Copied from" if you copied an existing dissector, especially
  16  * if the bulk of the code in the new dissector is your code)
  17  *
  18  * This program is free software; you can redistribute it and/or
  19  * modify it under the terms of the GNU General Public License
  20  * as published by the Free Software Foundation; either version 2
  21  * of the License, or (at your option) any later version.
  22  *
  23  * This program is distributed in the hope that it will be useful,
  24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26  * GNU General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU General Public License
  29  * along with this program; if not, write to the Free Software
  30  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  31  */
  32
  33 #ifdef HAVE_CONFIG_H
  34 # include "config.h"
  35 #endif
  36
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40
  41 #ifdef HAVE_SYS_TYPES_H
  42 # include <sys/types.h>
  43 #endif
  44
  45 #ifdef HAVE_NETINET_IN_H
  46 # include <netinet/in.h>
  47 #endif
  48
  49 #include <glib.h>
  50
  51 #include <epan/packet.h>
  52 #include <epan/conversation.h>
  53 #include <epan/etypes.h>
  54 #include "packet-scsi.h"
  55 #include "packet-fc.h"
  56
  57 /* Message Codes */
  58 #define FC_AUTH_MSG_AUTH_REJECT        0x0A
  59 #define FC_AUTH_MSG_AUTH_NEGOTIATE     0x0B
  60 #define FC_AUTH_MSG_AUTH_DONE          0x0C
  61 #define FC_AUTH_DHCHAP_CHALLENGE       0x10
  62 #define FC_AUTH_DHCHAP_REPLY           0x11
  63 #define FC_AUTH_DHCHAP_SUCCESS         0x12
  64 #define FC_AUTH_FCAP_REQUEST           0x13
  65 #define FC_AUTH_FCAP_ACKNOWLEDGE       0x14
  66 #define FC_AUTH_FCAP_CONFIRM           0x15
  67 #define FC_AUTH_FCPAP_INIT             0x16
  68 #define FC_AUTH_FCPAP_ACCEPT           0x17
  69 #define FC_AUTH_FCPAP_COMPLETE         0x18
  70
  71 #define FC_AUTH_NAME_TYPE_WWN          0x1
  72
  73 #define FC_AUTH_PROTO_TYPE_DHCHAP      0x1
  74 #define FC_AUTH_PROTO_TYPE_FCAP        0x2
  75
  76 #define FC_AUTH_DHCHAP_HASH_MD5        0x5
  77 #define FC_AUTH_DHCHAP_HASH_SHA1       0x6
  78
  79 #define FC_AUTH_DHCHAP_PARAM_HASHLIST  0x1
  80 #define FC_AUTH_DHCHAP_PARAM_DHgIDLIST 0x2
  81
  82 /* Initialize the protocol and registered fields */
  83 static int proto_fcsp              = -1;
  84 static int hf_auth_proto_ver       = -1;
  85 static int hf_auth_msg_code        = -1;
  86 static int hf_auth_flags           = -1;
  87 static int hf_auth_len             = -1;
  88 static int hf_auth_tid             = -1;
  89 static int hf_auth_initiator_wwn   = -1;
  90 static int hf_auth_initiator_name  = -1;
  91 static int hf_auth_usable_proto    = -1;
  92 static int hf_auth_rjt_code        = -1;
  93 static int hf_auth_rjt_codedet     = -1;
  94 static int hf_auth_responder_wwn   = -1;
  95 static int hf_auth_responder_name  = -1;
  96 static int hf_auth_dhchap_groupid  = -1;
  97 static int hf_auth_dhchap_hashid   = -1;
  98 static int hf_auth_dhchap_chal_len = -1;
  99 static int hf_auth_dhchap_val_len  = -1;
 100 static int hf_auth_dhchap_rsp_len  = -1;
 101 static int hf_auth_initiator_name_type = -1;
 102 static int hf_auth_initiator_name_len = -1;
 103 static int hf_auth_responder_name_len = -1;
 104 static int hf_auth_responder_name_type = -1;
 105 static int hf_auth_proto_type = -1;
 106 static int hf_auth_proto_param_len = -1;
 107 static int hf_auth_dhchap_param_tag = -1;
 108 static int hf_auth_dhchap_param_len = -1;
 109 static int hf_auth_dhchap_hash_type = -1;
 110 static int hf_auth_dhchap_group_type = -1;
 111 static int hf_auth_dhchap_dhvalue = -1;
 112 static int hf_auth_dhchap_chal_value = -1;
 113 static int hf_auth_dhchap_rsp_value = -1;
 114
 115 /* Initialize the subtree pointers */
 116 static gint ett_fcsp = -1;
 117
 118 static dissector_handle_t data_handle;
 119
 120 static const value_string fcauth_msgcode_vals[] = {
 121     {FC_AUTH_MSG_AUTH_REJECT, "AUTH_Reject"},
 122     {FC_AUTH_MSG_AUTH_NEGOTIATE, "AUTH_Negotiate"},
 123     {FC_AUTH_MSG_AUTH_DONE, "AUTH_Done"},
 124     {FC_AUTH_DHCHAP_CHALLENGE, "DHCHAP_Challenge"},
 125     {FC_AUTH_DHCHAP_REPLY, "DHCHAP_Reply"},
 126     {FC_AUTH_DHCHAP_SUCCESS, "DHCHAP_Success"},
 127     {FC_AUTH_FCAP_REQUEST, "FCAP_Request"},
 128     {FC_AUTH_FCAP_ACKNOWLEDGE, "FCAP_Acknowledge"},
 129     {FC_AUTH_FCAP_CONFIRM, "FCAP_Confirm"},
 130     {FC_AUTH_FCPAP_INIT, "FCPAP_Init"},
 131     {FC_AUTH_FCPAP_ACCEPT, "FCPAP_Accept"},
 132     {FC_AUTH_FCPAP_COMPLETE, "FCPAP_Complete"},
 133     {0, NULL},
 134 };
 135
 136 static const value_string fcauth_rjtcode_vals[] = {
 137     {0x01, "Authentication Failure"},
 138     {0x02, "Logical Error"},
 139     {0, NULL},
 140 };
 141
 142 static const value_string fcauth_rjtcode_detail_vals[] = {
 143     {0x01, "Authentication Mechanism Not Usable"},
 144     {0x02, "DH Group Not Usable"},
 145     {0x03, "Hash Algorithm Not Usable"},
 146     {0x04, "Authentication Protocol Instance Already Started"},
 147     {0x05, "Authentication Failed "},
 148     {0x06, "Incorrect Payload "},
 149     {0x07, "Incorrect Authentication Protocol Message"},
 150     {0x08, "Protocol Reset"},
 151     {0, NULL},
 152 };
 153
 154 static const value_string fcauth_dhchap_param_vals[] = {
 155     {FC_AUTH_DHCHAP_PARAM_HASHLIST, "HashList"},
 156     {FC_AUTH_DHCHAP_PARAM_DHgIDLIST, "DHgIDList"},
 157     {0, NULL},
 158 };
 159
 160 static const value_string fcauth_dhchap_hash_algo_vals[] = {
 161     {FC_AUTH_DHCHAP_HASH_MD5, "MD5"},
 162     {FC_AUTH_DHCHAP_HASH_SHA1, "SHA-1"},
 163     {0, NULL},
 164 };
 165
 166 static const value_string fcauth_name_type_vals[] = {
 167     {FC_AUTH_NAME_TYPE_WWN, "WWN"},
 168     {0, NULL},
 169 };
 170
 171 static const value_string fcauth_proto_type_vals[] = {
 172     {FC_AUTH_PROTO_TYPE_DHCHAP, "DHCHAP"},
 173     {FC_AUTH_PROTO_TYPE_FCAP, "FCAP"},
 174     {0, NULL},
 175 };
 176
 177 static const value_string fcauth_dhchap_dhgid_vals[] = {
 178     {0, "DH NULL"},
 179     {1, "DH Group 1024"},
 180     {2, "DH Group 1280"},
 181     {3, "DH Group 1536"},
 182     {4, "DH Group 2048"},
 183     {0, NULL},
 184 };
 185
 186 /* this format is required because a script is used to build the C function
 187    that calls all the protocol registration.
 188 */
 189
 190 static void dissect_fcsp_dhchap_auth_param (tvbuff_t *tvb, proto_tree *tree,
 191                                      int offset, gint32 total_len)
 192 {
 193     guint16 auth_param_tag;
 194     guint16 param_len = 0, i;
 195
 196     if (tree) {
 197         auth_param_tag = tvb_get_ntohs (tvb, offset);
 198         total_len -= 4;
 199
 200         while (total_len > 0) {
 201             proto_tree_add_item (tree, hf_auth_dhchap_param_tag, tvb, offset,
 202                                  2, 0);
 203             proto_tree_add_item (tree, hf_auth_dhchap_param_len, tvb, offset+2,
 204                                  2, 0);
 205
 206             auth_param_tag = tvb_get_ntohs (tvb, offset);
 207             param_len = tvb_get_ntohs (tvb, offset+2)*4;
 208
 209             switch (auth_param_tag) {
 210             case FC_AUTH_DHCHAP_PARAM_HASHLIST:
 211                 offset += 4;
 212                 total_len -= 4;
 213                 for (i = 0; i < param_len; i += 4) {
 214                     proto_tree_add_item (tree, hf_auth_dhchap_hash_type, tvb,
 215                                          offset, 4, 0);
 216                     offset += 4;
 217                 }
 218                 break;
 219             case FC_AUTH_DHCHAP_PARAM_DHgIDLIST:
 220                 offset += 4;
 221                 total_len -= 4;
 222                 for (i = 0; i < param_len; i += 4) {
 223                     proto_tree_add_item (tree, hf_auth_dhchap_group_type, tvb,
 224                                          offset, 4, 0);
 225                     offset += 4;
 226                 }
 227                 break;
 228             default:
 229                 break;
 230             }
 231
 232             total_len -= param_len;
 233         }
 234     }
 235 }
 236
 237 static void dissect_fcsp_dhchap_challenge (tvbuff_t *tvb, proto_tree *tree)
 238 {
 239     int offset = 12;
 240     guint16 name_type;
 241     guint16 param_len, name_len;
 242
 243     if (tree) {
 244         proto_tree_add_item (tree, hf_auth_responder_name_type, tvb, offset,
 245                              2, 0);
 246         name_type = tvb_get_ntohs (tvb, offset);
 247
 248         proto_tree_add_item (tree, hf_auth_responder_name_len, tvb, offset+2,
 249                              2, 0);
 250
 251         name_len = tvb_get_ntohs (tvb, offset+2);
 252
 253         if (name_type == FC_AUTH_NAME_TYPE_WWN) {
 254             proto_tree_add_string (tree, hf_auth_responder_wwn, tvb, offset+4,
 255                                    8,
 256                                    fcwwn_to_str (tvb_get_ptr (tvb, offset+4,
 257                                                               8)));
 258         }
 259         else {
 260             proto_tree_add_bytes (tree, hf_auth_responder_name, tvb, offset+4,
 261                                   name_len, tvb_get_ptr (tvb, offset+4, name_len));
 262         }
 263         offset += (4+name_len);
 264
 265         proto_tree_add_item (tree, hf_auth_dhchap_hash_type, tvb, offset,
 266                              4, 0);
 267         proto_tree_add_item (tree, hf_auth_dhchap_group_type, tvb, offset+4,
 268                              4, 0);
 269         proto_tree_add_item (tree, hf_auth_dhchap_chal_len, tvb, offset+8,
 270                              4, 0);
 271         param_len = tvb_get_ntohl (tvb, offset+8);
 272
 273         proto_tree_add_bytes (tree, hf_auth_dhchap_chal_value, tvb, offset+12,
 274                               param_len,
 275                               tvb_get_ptr (tvb, offset+12, param_len));
 276         offset += (param_len + 12);
 277
 278         proto_tree_add_item (tree, hf_auth_dhchap_val_len, tvb, offset, 4, 0);
 279         param_len = tvb_get_ntohl (tvb, offset);
 280
 281         proto_tree_add_bytes (tree, hf_auth_dhchap_dhvalue, tvb, offset+4,
 282                               param_len,
 283                               tvb_get_ptr (tvb, offset+4, param_len));
 284     }
 285 }
 286
 287
 288 static void dissect_fcsp_dhchap_reply (tvbuff_t *tvb, proto_tree *tree)
 289 {
 290     int offset = 12;
 291     guint32 param_len;
 292
 293     if (tree) {
 294         proto_tree_add_item (tree, hf_auth_dhchap_rsp_len, tvb, offset, 4, 0);
 295         param_len = tvb_get_ntohl (tvb, offset);
 296
 297         proto_tree_add_bytes (tree, hf_auth_dhchap_rsp_value, tvb, offset+4,
 298                               param_len,
 299                               tvb_get_ptr (tvb, offset+4, param_len));
 300         offset += (param_len + 4);
 301
 302         proto_tree_add_item (tree, hf_auth_dhchap_val_len, tvb, offset, 4, 0);
 303         param_len = tvb_get_ntohl (tvb, offset);
 304
 305         proto_tree_add_bytes (tree, hf_auth_dhchap_dhvalue, tvb, offset+4,
 306                               param_len,
 307                               tvb_get_ptr (tvb, offset+4, param_len));
 308         offset += (param_len + 4);
 309
 310         proto_tree_add_item (tree, hf_auth_dhchap_chal_len, tvb, offset, 4, 0);
 311         param_len = tvb_get_ntohl (tvb, offset);
 312
 313         proto_tree_add_bytes (tree, hf_auth_dhchap_chal_value, tvb, offset+4,
 314                               param_len,
 315                               tvb_get_ptr (tvb, offset+4, param_len));
 316     }
 317 }
 318
 319 static void dissect_fcsp_dhchap_success (tvbuff_t *tvb, proto_tree *tree)
 320 {
 321     int offset = 12;
 322     guint32 param_len;
 323
 324     if (tree) {
 325         proto_tree_add_item (tree, hf_auth_dhchap_rsp_len, tvb, offset, 4, 0);
 326         param_len = tvb_get_ntohl (tvb, offset);
 327
 328         proto_tree_add_bytes (tree, hf_auth_dhchap_rsp_value, tvb, offset+4,
 329                               param_len,
 330                               tvb_get_ptr (tvb, offset+4, param_len));
 331     }
 332 }
 333
 334
 335 static void dissect_fcsp_auth_negotiate (tvbuff_t *tvb, proto_tree *tree)
 336 {
 337     int offset = 12;
 338     guint16 name_type, name_len, proto_type, param_len;
 339     guint32 num_protos, i;
 340
 341     if (tree) {
 342         proto_tree_add_item (tree, hf_auth_initiator_name_type, tvb, offset,
 343                              2, 0);
 344         name_type = tvb_get_ntohs (tvb, offset);
 345
 346         proto_tree_add_item (tree, hf_auth_initiator_name_len, tvb, offset+2,
 347                              2, 0);
 348         name_len = tvb_get_ntohs (tvb, offset+2);
 349
 350         if (name_type == FC_AUTH_NAME_TYPE_WWN) {
 351             proto_tree_add_string (tree, hf_auth_initiator_wwn, tvb, offset+4, 8,
 352                                    fcwwn_to_str (tvb_get_ptr (tvb, offset+4, 8)));
 353         }
 354         else {
 355             proto_tree_add_bytes (tree, hf_auth_initiator_name, tvb, offset+4,
 356                                   name_len, tvb_get_ptr (tvb, offset+4,
 357                                                          name_len));
 358         }
 359
 360         offset += (4+name_len);
 361
 362         proto_tree_add_item (tree, hf_auth_usable_proto, tvb, offset, 4, 0);
 363         num_protos = tvb_get_ntohl (tvb, offset);
 364         offset += 4;
 365
 366         for (i = 0; i < num_protos; i++) {
 367             proto_tree_add_item (tree, hf_auth_proto_param_len, tvb, offset, 4, 0);
 368             param_len = tvb_get_ntohl (tvb, offset);
 369             offset += 4;
 370
 371             if (tvb_bytes_exist (tvb, offset, param_len)) {
 372                 proto_type = tvb_get_ntohl (tvb, offset);
 373
 374                 proto_tree_add_item (tree, hf_auth_proto_type, tvb, offset, 4, 0);
 375                 switch (proto_type) {
 376                 case FC_AUTH_PROTO_TYPE_DHCHAP:
 377                     dissect_fcsp_dhchap_auth_param (tvb, tree, offset+4, param_len);
 378                     break;
 379                 case FC_AUTH_PROTO_TYPE_FCAP:
 380                     break;
 381                 default:
 382                     break;
 383                 }
 384             }
 385             offset += param_len;
 386         }
 387     }
 388 }
 389
 390 static void dissect_fcsp_auth_done (tvbuff_t *tvb _U_, proto_tree *tree _U_)
 391 {
 392 }
 393
 394 static void dissect_fcsp_auth_rjt (tvbuff_t *tvb, proto_tree *tree)
 395 {
 396     int offset = 12;
 397
 398     if (tree) {
 399         proto_tree_add_item (tree, hf_auth_rjt_code, tvb, offset, 1, 0);
 400         proto_tree_add_item (tree, hf_auth_rjt_codedet, tvb, offset+1, 1, 0);
 401     }
 402 }
 403
 404 static void dissect_fcsp (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 405 {
 406     proto_item *ti = NULL;
 407     guint8 opcode;
 408     int offset = 0;
 409     proto_tree *fcsp_tree = NULL;
 410
 411     /* Make entry in the Info column on summary display */
 412     opcode = tvb_get_guint8 (tvb, 2);
 413
 414     if (check_col (pinfo->cinfo, COL_INFO)) {
 415         col_add_str (pinfo->cinfo, COL_INFO,
 416                      val_to_str (opcode, fcauth_msgcode_vals, "0x%x"));
 417     }
 418
 419     if (tree) {
 420         ti = proto_tree_add_protocol_format (tree, proto_fcsp, tvb, 0,
 421                                              tvb_length (tvb), "FC-SP");
 422         fcsp_tree = proto_item_add_subtree (ti, ett_fcsp);
 423
 424         proto_tree_add_item (fcsp_tree, hf_auth_flags, tvb, offset+1, 1, 0);
 425         proto_tree_add_item (fcsp_tree, hf_auth_msg_code, tvb, offset+2, 1, 0);
 426         proto_tree_add_item (fcsp_tree, hf_auth_proto_ver, tvb, offset+3, 1,
 427                              0);
 428         proto_tree_add_item (fcsp_tree, hf_auth_len, tvb, offset+4, 4, 0);
 429         proto_tree_add_item (fcsp_tree, hf_auth_tid, tvb, offset+8, 4, 0);
 430
 431         switch (opcode) {
 432         case FC_AUTH_MSG_AUTH_REJECT:
 433             dissect_fcsp_auth_rjt (tvb, tree);
 434             break;
 435         case FC_AUTH_MSG_AUTH_NEGOTIATE:
 436             dissect_fcsp_auth_negotiate (tvb, tree);
 437             break;
 438         case FC_AUTH_MSG_AUTH_DONE:
 439             dissect_fcsp_auth_done (tvb, tree);
 440             break;
 441         case FC_AUTH_DHCHAP_CHALLENGE:
 442             dissect_fcsp_dhchap_challenge (tvb, tree);
 443             break;
 444         case FC_AUTH_DHCHAP_REPLY:
 445             dissect_fcsp_dhchap_reply (tvb, tree);
 446             break;
 447         case FC_AUTH_DHCHAP_SUCCESS:
 448             dissect_fcsp_dhchap_success (tvb, tree);
 449             break;
 450         case FC_AUTH_FCAP_REQUEST:
 451         case FC_AUTH_FCAP_ACKNOWLEDGE:
 452         case FC_AUTH_FCAP_CONFIRM:
 453         case FC_AUTH_FCPAP_INIT:
 454         case FC_AUTH_FCPAP_ACCEPT:
 455         case FC_AUTH_FCPAP_COMPLETE:
 456             proto_tree_add_text (fcsp_tree, tvb, offset+12, tvb_length (tvb),
 457                                  "FCAP Decoding Not Supported");
 458             break;
 459         default:
 460             break;
 461         }
 462     }
 463 }
 464
 465 void
 466 proto_register_fcsp (void)
 467 {
 468     /* Setup list of header fields  See Section 1.6.1 for details*/
 469     static hf_register_info hf[] = {
 470         { &hf_auth_proto_ver,
 471           {"Protocol Version", "fcsp.version", FT_UINT8, BASE_HEX, NULL,
 472            0x0, NULL, HFILL}},
 473         { &hf_auth_msg_code,
 474           {"Message Code", "fcsp.opcode", FT_UINT8, BASE_HEX,
 475            VALS (fcauth_msgcode_vals), 0x0, NULL, HFILL}},
 476         { &hf_auth_flags,
 477           {"Flags", "fcsp.flags", FT_UINT8, BASE_HEX, NULL, 0x0, NULL,
 478            HFILL}},
 479         { &hf_auth_len,
 480           {"Packet Length", "fcsp.len", FT_UINT32, BASE_DEC, NULL, 0x0,
 481            NULL, HFILL}},
 482         { &hf_auth_tid,
 483           {"Transaction Identifier", "fcsp.tid", FT_UINT32, BASE_HEX, NULL,
 484            0x0, NULL, HFILL}},
 485         { &hf_auth_initiator_wwn,
 486           {"Initiator Name (WWN)", "fcsp.initwwn", FT_STRING, BASE_NONE, NULL,
 487            0x0, NULL, HFILL}},
 488         { &hf_auth_initiator_name,
 489           {"Initiator Name (Unknown Type)", "fcsp.initname", FT_BYTES,
 490            BASE_NONE, NULL, 0x0, NULL, HFILL}},
 491         { &hf_auth_initiator_name_type,
 492           {"Initiator Name Type", "fcsp.initnametype", FT_UINT16, BASE_HEX,
 493            VALS (fcauth_name_type_vals), 0x0, NULL, HFILL}},
 494         { &hf_auth_initiator_name_len,
 495           {"Initiator Name Length", "fcsp.initnamelen", FT_UINT16, BASE_DEC,
 496            NULL, 0x0, NULL, HFILL}},
 497         { &hf_auth_usable_proto,
 498           {"Number of Usable Protocols", "fcsp.usableproto", FT_UINT32,
 499            BASE_DEC, NULL, 0x0, NULL, HFILL}},
 500         { &hf_auth_rjt_code,
 501           {"Reason Code", "fcsp.rjtcode", FT_UINT8, BASE_DEC,
 502            VALS (fcauth_rjtcode_vals), 0x0, NULL, HFILL}},
 503         { &hf_auth_rjt_codedet,
 504           {"Reason Code Explanation", "fcsp.rjtcodet", FT_UINT8, BASE_DEC,
 505            VALS (fcauth_rjtcode_detail_vals), 0x0, NULL, HFILL}},
 506         { &hf_auth_responder_wwn,
 507           {"Responder Name (WWN)", "fcsp.rspwwn", FT_STRING, BASE_NONE, NULL,
 508            0x0, NULL, HFILL}},
 509         { &hf_auth_responder_name,
 510           {"Responder Name (Unknown Type)", "fcsp.rspname", FT_BYTES, BASE_NONE,
 511            NULL, 0x0, NULL, HFILL}},
 512         { &hf_auth_responder_name_type,
 513           {"Responder Name Type", "fcsp.rspnametype", FT_UINT16, BASE_HEX,
 514            VALS (fcauth_name_type_vals), 0x0, NULL, HFILL}},
 515         { &hf_auth_responder_name_len,
 516           {"Responder Name Type", "fcsp.rspnamelen", FT_UINT16, BASE_DEC,
 517            NULL, 0x0, NULL, HFILL}},
 518         { &hf_auth_dhchap_hashid,
 519           {"Hash Identifier", "fcsp.dhchap.hashid", FT_UINT32, BASE_HEX, NULL, 0x0,
 520            NULL, HFILL}},
 521         { &hf_auth_dhchap_groupid,
 522           {"DH Group Identifier", "fcsp.dhchap.groupid", FT_UINT32, BASE_HEX, NULL,
 523            0x0, NULL, HFILL}},
 524         { &hf_auth_dhchap_chal_len,
 525           {"Challenge Value Length", "fcsp.dhchap.challen", FT_UINT32, BASE_DEC,
 526            NULL, 0x0, NULL, HFILL}},
 527         { &hf_auth_dhchap_val_len,
 528           {"DH Value Length", "fcsp.dhchap.vallen", FT_UINT32, BASE_DEC, NULL,
 529            0x0, NULL, HFILL}},
 530         { &hf_auth_dhchap_rsp_len,
 531           {"Response Value Length", "fcsp.dhchap.rsplen", FT_UINT32, BASE_DEC,
 532            NULL, 0x0, NULL, HFILL}},
 533         { &hf_auth_proto_type,
 534           {"Authentication Protocol Type", "fcsp.proto", FT_UINT32, BASE_DEC,
 535            VALS (fcauth_proto_type_vals), 0x0, NULL, HFILL}},
 536         { &hf_auth_proto_param_len,
 537           {"Protocol Parameters Length", "fcsp.protoparamlen", FT_UINT32,
 538            BASE_DEC, NULL, 0x0, NULL, HFILL}},
 539         { &hf_auth_dhchap_param_tag,
 540           {"Parameter Tag", "fcsp.dhchap.paramtype", FT_UINT16, BASE_HEX,
 541            VALS (fcauth_dhchap_param_vals), 0x0, NULL, HFILL}},
 542         { &hf_auth_dhchap_param_len,
 543           {"Parameter Length", "fcsp.dhchap.paramlen", FT_UINT16, BASE_DEC,
 544            NULL, 0x0, NULL, HFILL}},
 545         { &hf_auth_dhchap_hash_type,
 546           {"Hash Algorithm", "fcsp.dhchap.hashtype", FT_UINT32, BASE_DEC,
 547            VALS (fcauth_dhchap_hash_algo_vals), 0x0, NULL, HFILL}},
 548         { &hf_auth_dhchap_group_type,
 549           {"DH Group", "fcsp.dhchap.dhgid", FT_UINT32, BASE_DEC,
 550            VALS (fcauth_dhchap_dhgid_vals), 0x0, NULL, HFILL}},
 551         { &hf_auth_dhchap_chal_value,
 552           {"Challenge Value", "fcsp.dhchap.chalval", FT_BYTES, BASE_NONE,
 553            NULL, 0x0, NULL, HFILL}},
 554         { &hf_auth_dhchap_dhvalue,
 555           {"DH Value", "fcsp.dhchap.dhvalue", FT_BYTES, BASE_NONE, NULL, 0x0,
 556            NULL, HFILL}},
 557         { &hf_auth_dhchap_rsp_value,
 558           {"Response Value", "fcsp.dhchap.rspval", FT_BYTES, BASE_NONE, NULL,
 559            0x0, NULL, HFILL}},
 560
 561     };
 562
 563
 564     /* Setup protocol subtree array */
 565     static gint *ett[] = {
 566         &ett_fcsp,
 567     };
 568
 569     /* Register the protocol name and description */
 570     proto_fcsp = proto_register_protocol ("Fibre Channel Security Protocol",
 571                                            "FC-SP", "fcsp");
 572
 573     register_dissector("fcsp", dissect_fcsp, proto_fcsp);
 574     /* Required function calls to register the header fields and subtrees used */
 575     proto_register_field_array(proto_fcsp, hf, array_length(hf));
 576     proto_register_subtree_array(ett, array_length(ett));
 577 }
 578
 579 /* If this dissector uses sub-dissector registration add a registration routine.
 580    This format is required because a script is used to find these routines and
 581    create the code that calls these routines.
 582 */
 583 void
 584 proto_reg_handoff_fcsp (void)
 585 {
 586     data_handle = find_dissector ("data");
 587 }
 588