epan/dissectors/packet-nsrp.c

   1 /* packet-nsrp.c
   2  * Routines for the Juniper Netscreen Redundant Protocol (NSRP)
   3  *
   4  * Secfire <secfire@gmail.com>
   5  *
   6  * $Id$
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  26  */
  27
  28 /*
  29  *
  30  * NSRP update information can be found at www.juniper.net
  31  *
  32  *
  33  *
  34  *    NSRP Packet Header is defined as follow:
  35  *
  36  *       1         2       3        4        5         6       7        8
  37  *   +--------+--------+--------+--------+--------+--------+--------+--------+
  38  *   |Version | Type   |Clust ID|MSG Flag|     Length      |HA Port |Not Used|
  39  *   +--------+--------+--------+--------+--------+--------+--------+--------+
  40  *   |          Destination Unit         |             Source Unit           |
  41  *   +--------+--------+--------+--------+--------+--------+--------+--------+
  42  *
  43  *
  44  *
  45  */
  46
  47 #ifdef HAVE_CONFIG_H
  48 # include "config.h"
  49 #endif
  50
  51 #include <glib.h>
  52
  53 #include <epan/packet.h>
  54 #include <epan/etypes.h>
  55
  56 #define NSRP_MIN_LEN    32
  57
  58 /* Initialize the protocol and registered fields */
  59 static int proto_nsrp       = -1;
  60
  61 static int hf_nsrp_version       = -1;
  62 static int hf_nsrp_msg_type      = -1;
  63 static int hf_nsrp_clust_id      = -1;
  64 static int hf_nsrp_msg_flag      = -1;
  65 static int hf_nsrp_len           = -1;
  66 static int hf_nsrp_ha_port       = -1;
  67 static int hf_nsrp_not_used      = -1;
  68 static int hf_nsrp_dst_unit      = -1;
  69 static int hf_nsrp_src_unit      = -1;
  70 static int hf_nsrp_msgtype       = -1;
  71 static int hf_nsrp_wst_group     = -1;
  72 static int hf_nsrp_hst_group     = -1;
  73 static int hf_nsrp_msgflag     = -1;
  74 static int hf_nsrp_authflag      = -1;
  75 static int hf_nsrp_priority      = -1;
  76 static int hf_nsrp_dummy         = -1;
  77 static int hf_nsrp_authchecksum  = -1;
  78 static int hf_nsrp_ifnum         = -1;
  79
  80
  81 /* Dada defined for HA Message */
  82 static int hf_nsrp_msglen      = -1;
  83 static int hf_nsrp_encflag      = -1;
  84 static int hf_nsrp_notused = -1;
  85
  86 static int hf_nsrp_total_size = -1;
  87
  88 static int hf_nsrp_ns = -1;
  89 static int hf_nsrp_nr = -1;
  90
  91 static int hf_nsrp_no_used = -1;
  92 static int hf_nsrp_checksum = -1;
  93
  94 static int hf_nsrp_data = -1;
  95
  96
  97 static const value_string nsrp_msg_type_vals[] = {
  98         { 0x01, "HA MESSAGE" },
  99         { 0x02, "MNG MESSAGE" },
 100         { 0x03, "DADA MESSAGE" },
 101         { 0,                    NULL }
 102 };
 103
 104 static const value_string nsrp_msgtype_vals[] = {
 105         { 0x01, "CREATE SESSION" },
 106         { 0x02, "CLOSE SESSION" },
 107         { 0x03, "CHANG SESSION" },
 108         { 0x04, "CREATE SP SESSION" },
 109         { 0x05, "SYS CONFIG" },
 110         { 0x06, "FILE SYS" },
 111         { 0x07, "CMD WEB" },
 112         { 0x08, "SAVE SLAVE" },
 113         { 0x09, "VPN SPI" },
 114         { 0x0a, "ARP" },
 115         { 0x0b, "HEALTH CHECK" },
 116         { 0x0c, "EMW DATA" },
 117         { 0x0d, "INVITE SYNC" },
 118         { 0x0e, "DOWNLOAD CONFIG" },
 119         { 0x0f, "L2TP TUNL CREATE" },
 120         { 0x10, "L2TP TUNL DELETE" },
 121         { 0x11, "L2TP CALL CREATE" },
 122         { 0x12, "L2TP CALL DELETE" },
 123         { 0x13, "PKI SYNC" },
 124         { 0x14, "VPN SEQ" },
 125         { 0x15, "MAX" },
 126         { 0,                    NULL }
 127 };
 128
 129 static const value_string nsrp_flag_vals[] = {
 130         { 0x80, "ENCRPT MESSAGE" },
 131         { 0x40, "CLOSE SESSION" },
 132         { 0x20, "CHANG SESSION" },
 133         { 0x10, "CREATE SP SESSION" },
 134         { 0x08, "SYS CONFIG" },
 135         { 0x04, "FILE SYS" },
 136         { 0x02, "CMD WEB" },
 137         { 0,                    NULL }
 138 };
 139
 140 static const value_string nsrp_encflag_vals[] = {
 141         { 0xf0, "ENCRYPT METHOD MASK" },
 142         { 0x0f, "ENCRYPT PAD BIT MASK" },
 143         { 0,                    NULL }
 144 };
 145
 146
 147 /* Initialize the subtree pointers */
 148 static gint ett_nsrp = -1;
 149
 150 /* Code to actually dissect the packets */
 151 static void
 152 dissect_nsrp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 153 {
 154     proto_item  *ti;
 155     proto_tree  *nsrp_tree = NULL;
 156     gint        offset = 0;
 157     guint8      msgtype = 0;
 158
 159     col_set_str(pinfo->cinfo, COL_PROTOCOL, "NSRP");
 160
 161     col_set_str(pinfo->cinfo, COL_INFO, "NSRP Protocol");
 162
 163     if (tree) {
 164                         ti = proto_tree_add_item(tree, proto_nsrp, tvb, 0, -1, FALSE);
 165                         nsrp_tree = proto_item_add_subtree(ti, ett_nsrp);
 166
 167
 168                         proto_tree_add_item(nsrp_tree, hf_nsrp_version, tvb, offset, 1, FALSE);
 169                         offset += 1;
 170
 171                         msgtype = tvb_get_guint8(tvb, offset);
 172                         proto_tree_add_item(nsrp_tree, hf_nsrp_msg_type, tvb, offset, 1, FALSE);
 173                         offset += 1;
 174
 175                         proto_tree_add_item(nsrp_tree, hf_nsrp_clust_id, tvb, offset, 1, FALSE);
 176                         offset += 1;
 177
 178                         proto_tree_add_item(nsrp_tree, hf_nsrp_msg_flag, tvb, offset, 1, FALSE);
 179                         offset += 1;
 180
 181                         proto_tree_add_item(nsrp_tree, hf_nsrp_len, tvb, offset, 2, FALSE);
 182                         offset += 2;
 183
 184                         proto_tree_add_item(nsrp_tree, hf_nsrp_ha_port, tvb, offset, 1, FALSE);
 185                         offset += 1;
 186
 187                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, FALSE);
 188                         offset += 1;
 189
 190                         proto_tree_add_item(nsrp_tree, hf_nsrp_dst_unit, tvb, offset, 4, FALSE);
 191                         offset += 4;
 192
 193                         proto_tree_add_item(nsrp_tree, hf_nsrp_src_unit, tvb, offset, 4, FALSE);
 194                         offset += 4;
 195                 }
 196
 197 /*
 198  *
 199  *
 200  *    NSRP HA Packet is defined as follow:
 201  *
 202  *       1         2       3        4        5         6       7        8
 203  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 204  *   | Type   |WstGroup|HstGroup|MSG Flag|     Length      |Enc Flag|Not Used|
 205  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 206  *   |            Total Size             |        NS       |        NR       |
 207  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 208  *   |     No Used     |    Checksum     |              Data                 |
 209  *   +--------+--------+--------+--------+-----------------------------------+
 210  *
 211  *
 212  */
 213
 214                 if ( msgtype == 0x00 ) {
 215
 216                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, FALSE);
 217                         offset += 1;
 218
 219                         proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, FALSE);
 220                         offset += 1;
 221
 222                         proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, FALSE);
 223                         offset += 1;
 224
 225                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, FALSE);
 226                         offset += 1;
 227
 228                         proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, FALSE);
 229                         offset += 2;
 230
 231                         proto_tree_add_item(nsrp_tree, hf_nsrp_encflag, tvb, offset, 1, FALSE);
 232                         offset += 1;
 233
 234                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, FALSE);
 235                         offset += 1;
 236
 237                         proto_tree_add_item(nsrp_tree, hf_nsrp_total_size, tvb, offset, 4, FALSE);
 238                         offset += 4;
 239
 240                         proto_tree_add_item(nsrp_tree, hf_nsrp_ns, tvb, offset, 2, FALSE);
 241                         offset += 2;
 242
 243                         proto_tree_add_item(nsrp_tree, hf_nsrp_nr, tvb, offset, 2, FALSE);
 244                         offset += 2;
 245
 246                         proto_tree_add_item(nsrp_tree, hf_nsrp_no_used, tvb, offset, 2, FALSE);
 247                         offset += 2;
 248
 249                         proto_tree_add_item(nsrp_tree, hf_nsrp_checksum, tvb, offset, 2, FALSE);
 250                         offset += 2;
 251
 252                         proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, FALSE);
 253
 254     }
 255
 256 /*
 257  *
 258  *    NSRP MNG Packet is defined as follow:
 259  *
 260  *       1         2       3        4        5         6       7        8
 261  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 262  *   | Type   |WstGroup|HstGroup|MSG Flag|     Length      |AuthFlag|Not Used|
 263  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 264  *   |Priority+ Dummy  +   Auth CheckSum +                Data               |
 265  *   +--------+--------+--------+--------+-----------------------------------+
 266  *
 267  *
 268  */
 269
 270                 if ( msgtype == 0x02 ) {
 271
 272                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, FALSE);
 273                         offset += 1;
 274
 275                         proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, FALSE);
 276                         offset += 1;
 277
 278                         proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, FALSE);
 279                         offset += 1;
 280
 281                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, FALSE);
 282                         offset += 1;
 283
 284                         proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, FALSE);
 285                         offset += 2;
 286
 287                         proto_tree_add_item(nsrp_tree, hf_nsrp_authflag, tvb, offset, 1, FALSE);
 288                         offset += 1;
 289
 290                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, FALSE);
 291                         offset += 1;
 292
 293                         proto_tree_add_item(nsrp_tree, hf_nsrp_priority, tvb, offset, 1, FALSE);
 294                         offset += 1;
 295
 296                         proto_tree_add_item(nsrp_tree, hf_nsrp_dummy, tvb, offset, 1, FALSE);
 297                         offset += 1;
 298
 299                         proto_tree_add_item(nsrp_tree, hf_nsrp_authchecksum, tvb, offset, 2, FALSE);
 300                         offset += 2;
 301
 302                         proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, FALSE);
 303
 304     }
 305
 306
 307
 308
 309 /*
 310  *    NSRP DATA Packet is defined as follow:
 311  *
 312  *       1         2       3        4        5         6       7        8
 313  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 314  *   | Type   |WstGroup|HstGroup|MSG Flag|     Length      | Ifnum  |Not Used|
 315  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 316  *   |            Total Size             |                Data               |
 317  *   +--------+--------+--------+--------+-----------------------------------+
 318  *
 319  *
 320  */
 321    if ( msgtype == 0x03 ) {
 322
 323                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, FALSE);
 324                         offset += 1;
 325
 326                         proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, FALSE);
 327                         offset += 1;
 328
 329                         proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, FALSE);
 330                         offset += 1;
 331
 332                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, FALSE);
 333                         offset += 1;
 334
 335                         proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, FALSE);
 336                         offset += 2;
 337
 338                         proto_tree_add_item(nsrp_tree, hf_nsrp_ifnum, tvb, offset, 1, FALSE);
 339                         offset += 1;
 340
 341                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, FALSE);
 342                         offset += 1;
 343
 344                         proto_tree_add_item(nsrp_tree, hf_nsrp_total_size, tvb, offset, 4, FALSE);
 345                         offset += 4;
 346
 347                         proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, FALSE);
 348
 349     }
 350
 351 }
 352
 353
 354 void
 355 proto_register_nsrp(void)
 356 {
 357
 358     static hf_register_info hf[] = {
 359         { &hf_nsrp_version,
 360           { "Version", "nsrp.version",
 361             FT_UINT8, BASE_DEC, NULL, 0,
 362             "NSRP Version", HFILL }
 363         },
 364                 { &hf_nsrp_msg_type,
 365           { "Type", "nsrp.type",
 366             FT_UINT8, BASE_DEC, nsrp_msg_type_vals, 0,
 367             "NSRP Message Type", HFILL }
 368         },
 369                 { &hf_nsrp_clust_id,
 370           { "Clust ID", "nsrp.clustid",
 371             FT_UINT8, BASE_DEC, NULL, 0,
 372             "NSRP CLUST ID", HFILL }
 373         },
 374                 { &hf_nsrp_msg_flag,
 375           { "Flag", "nsrp.flag",
 376             FT_UINT8, BASE_DEC, NULL, 0,
 377             "NSRP FLAG", HFILL }
 378         },
 379         { &hf_nsrp_len,
 380           { "Length", "nsrp.length",
 381             FT_UINT16, BASE_DEC, NULL, 0,
 382             "NSRP Length", HFILL }
 383         },
 384                 { &hf_nsrp_ha_port,
 385           { "Port", "nsrp.haport",
 386             FT_UINT8, BASE_DEC, NULL, 0,
 387             "NSRP HA Port", HFILL }
 388         },
 389                 { &hf_nsrp_not_used,
 390           { "Not used", "nsrp.notused",
 391             FT_UINT8, BASE_DEC, NULL, 0,
 392             "NOT USED", HFILL }
 393         },
 394                 { &hf_nsrp_dst_unit,
 395           { "Destination", "nsrp.dst",
 396             FT_UINT32, BASE_DEC, NULL, 0,
 397             "DESTINATION UNIT INFORMATION", HFILL }
 398         },
 399         { &hf_nsrp_src_unit,
 400           { "Source", "nsrp.src",
 401             FT_UINT32, BASE_DEC, NULL, 0,
 402             "SOURCE UNIT INFORMATION", HFILL }
 403         },
 404                 { &hf_nsrp_msgtype,
 405           { "MsgType", "nsrp.msgtype",
 406             FT_UINT8, BASE_DEC, VALS(nsrp_msgtype_vals), 0,
 407             "Message Type", HFILL }
 408         },
 409                 { &hf_nsrp_wst_group,
 410           { "Wst group", "nsrp.wst",
 411             FT_UINT8, BASE_DEC, NULL, 0,
 412             "NSRP WST GROUP", HFILL }
 413         },
 414                 { &hf_nsrp_hst_group,
 415           { "Hst group", "nsrp.hst",
 416             FT_UINT8, BASE_DEC, NULL, 0,
 417             "NSRP HST GROUP", HFILL }
 418         },
 419         { &hf_nsrp_msgflag,
 420           { "Msgflag", "nsrp.msgflag",
 421             FT_UINT8, BASE_DEC, VALS(nsrp_flag_vals), 0,
 422             "NSRP MSG FLAG", HFILL }
 423         },
 424         { &hf_nsrp_msglen,
 425           { "Msg Length", "nsrp.msglen",
 426             FT_UINT16, BASE_DEC, NULL, 0,
 427             "NSRP MESSAGE LENGTH", HFILL }
 428         },
 429
 430         { &hf_nsrp_encflag,
 431           { "Enc Flag", "nsrp.encflag",
 432             FT_UINT8, BASE_DEC, VALS(nsrp_encflag_vals), 0,
 433             "NSRP ENCRYPT FLAG", HFILL }
 434         },
 435                 { &hf_nsrp_notused,
 436           { "Not Used", "nsrp.notused",
 437             FT_UINT8, BASE_DEC, NULL, 0,
 438             "NOT USED", HFILL }
 439         },
 440                 { &hf_nsrp_total_size,
 441           { "Total Size", "nsrp.totalsize",
 442             FT_UINT32, BASE_DEC, NULL, 0,
 443             "NSRP MSG TOTAL MESSAGE", HFILL }
 444         },
 445                 { &hf_nsrp_ns,
 446           { "Ns", "nsrp.ns",
 447             FT_UINT16, BASE_DEC, NULL, 0,
 448             NULL, HFILL }
 449         },
 450                 { &hf_nsrp_nr,
 451           { "Nr", "nsrp.nr",
 452             FT_UINT16, BASE_DEC, NULL, 0,
 453             NULL, HFILL }
 454         },
 455                 { &hf_nsrp_no_used,
 456           { "Reserved", "nsrp.reserved",
 457             FT_UINT16, BASE_DEC, NULL, 0,
 458             "RESERVED", HFILL }
 459         },
 460                 { &hf_nsrp_checksum,
 461           { "Checksum", "nsrp.checksum",
 462             FT_UINT16, BASE_HEX, NULL, 0,
 463             "NSRP PACKET CHECKSUM", HFILL }
 464         },
 465                 { &hf_nsrp_authflag,
 466           { "AuthFlag", "nsrp.authflag",
 467             FT_UINT8, BASE_HEX, NULL, 0,
 468             "NSRP Auth Flag", HFILL }
 469         },
 470                         { &hf_nsrp_priority,
 471           { "Priority", "nsrp.priority",
 472             FT_UINT8, BASE_HEX, NULL, 0,
 473             "NSRP Priority", HFILL }
 474         },
 475                         { &hf_nsrp_dummy,
 476           { "Dummy", "nsrp.dummy",
 477             FT_UINT8, BASE_HEX, NULL, 0,
 478             "NSRP Dummy", HFILL }
 479         },
 480                 { &hf_nsrp_authchecksum,
 481           { "Checksum", "nsrp.authchecksum",
 482             FT_UINT16, BASE_HEX, NULL, 0,
 483             "NSRP AUTH CHECKSUM", HFILL }
 484         },
 485                 { &hf_nsrp_ifnum,
 486           { "Ifnum", "nsrp.ifnum",
 487             FT_UINT16, BASE_HEX, NULL, 0,
 488             "NSRP IfNum", HFILL }
 489         },
 490         { &hf_nsrp_data,
 491           { "Data", "nsrp.data",
 492             FT_STRING, BASE_NONE, NULL, 0,
 493             "PADDING", HFILL }
 494         }
 495     };
 496
 497     static gint *ett[] = {
 498         &ett_nsrp
 499     };
 500
 501     proto_nsrp = proto_register_protocol("Juniper Netscreen Redundant Protocol",
 502         "NSRP", "nsrp");
 503     proto_register_field_array(proto_nsrp, hf, array_length(hf));
 504     proto_register_subtree_array(ett, array_length(ett));
 505 }
 506
 507
 508 void
 509 proto_reg_handoff_nsrp(void)
 510 {
 511     dissector_handle_t nsrp_handle;
 512
 513     nsrp_handle = create_dissector_handle(dissect_nsrp, proto_nsrp);
 514     dissector_add("ethertype", ETHERTYPE_NSRP, nsrp_handle);
 515 }