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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 #include "config.h"
  48
  49 #include <glib.h>
  50
  51 #include <epan/packet.h>
  52 #include <epan/etypes.h>
  53
  54 #define NSRP_MIN_LEN    32
  55
  56 /* Initialize the protocol and registered fields */
  57 static int proto_nsrp       = -1;
  58
  59 static int hf_nsrp_version       = -1;
  60 static int hf_nsrp_msg_type      = -1;
  61 static int hf_nsrp_clust_id      = -1;
  62 static int hf_nsrp_msg_flag      = -1;
  63 static int hf_nsrp_len           = -1;
  64 static int hf_nsrp_ha_port       = -1;
  65 static int hf_nsrp_not_used      = -1;
  66 static int hf_nsrp_dst_unit      = -1;
  67 static int hf_nsrp_src_unit      = -1;
  68 static int hf_nsrp_msgtype       = -1;
  69 static int hf_nsrp_wst_group     = -1;
  70 static int hf_nsrp_hst_group     = -1;
  71 static int hf_nsrp_msgflag     = -1;
  72 static int hf_nsrp_authflag      = -1;
  73 static int hf_nsrp_priority      = -1;
  74 static int hf_nsrp_dummy         = -1;
  75 static int hf_nsrp_authchecksum  = -1;
  76 static int hf_nsrp_ifnum         = -1;
  77
  78
  79 /* Dada defined for HA Message */
  80 static int hf_nsrp_msglen      = -1;
  81 static int hf_nsrp_encflag      = -1;
  82 /* static int hf_nsrp_notused = -1; */
  83
  84 static int hf_nsrp_total_size = -1;
  85
  86 static int hf_nsrp_ns = -1;
  87 static int hf_nsrp_nr = -1;
  88
  89 static int hf_nsrp_no_used = -1;
  90 static int hf_nsrp_checksum = -1;
  91
  92 static int hf_nsrp_data = -1;
  93
  94
  95 static const value_string nsrp_msg_type_vals[] = {
  96         { 0x01, "HA MESSAGE" },
  97         { 0x02, "MNG MESSAGE" },
  98         { 0x03, "DADA MESSAGE" },
  99         { 0,                    NULL }
 100 };
 101
 102 static const value_string nsrp_msgtype_vals[] = {
 103         { 0x01, "CREATE SESSION" },
 104         { 0x02, "CLOSE SESSION" },
 105         { 0x03, "CHANG SESSION" },
 106         { 0x04, "CREATE SP SESSION" },
 107         { 0x05, "SYS CONFIG" },
 108         { 0x06, "FILE SYS" },
 109         { 0x07, "CMD WEB" },
 110         { 0x08, "SAVE SLAVE" },
 111         { 0x09, "VPN SPI" },
 112         { 0x0a, "ARP" },
 113         { 0x0b, "HEALTH CHECK" },
 114         { 0x0c, "EMW DATA" },
 115         { 0x0d, "INVITE SYNC" },
 116         { 0x0e, "DOWNLOAD CONFIG" },
 117         { 0x0f, "L2TP TUNL CREATE" },
 118         { 0x10, "L2TP TUNL DELETE" },
 119         { 0x11, "L2TP CALL CREATE" },
 120         { 0x12, "L2TP CALL DELETE" },
 121         { 0x13, "PKI SYNC" },
 122         { 0x14, "VPN SEQ" },
 123         { 0x15, "MAX" },
 124         { 0,                    NULL }
 125 };
 126
 127 static const value_string nsrp_flag_vals[] = {
 128         { 0x80, "ENCRPT MESSAGE" },
 129         { 0x40, "CLOSE SESSION" },
 130         { 0x20, "CHANG SESSION" },
 131         { 0x10, "CREATE SP SESSION" },
 132         { 0x08, "SYS CONFIG" },
 133         { 0x04, "FILE SYS" },
 134         { 0x02, "CMD WEB" },
 135         { 0,                    NULL }
 136 };
 137
 138 static const value_string nsrp_encflag_vals[] = {
 139         { 0xf0, "ENCRYPT METHOD MASK" },
 140         { 0x0f, "ENCRYPT PAD BIT MASK" },
 141         { 0,                    NULL }
 142 };
 143
 144
 145 /* Initialize the subtree pointers */
 146 static gint ett_nsrp = -1;
 147
 148 /* Code to actually dissect the packets */
 149 static void
 150 dissect_nsrp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 151 {
 152     proto_item  *ti;
 153     proto_tree  *nsrp_tree = NULL;
 154     gint        offset = 0;
 155     guint8      msgtype = 0;
 156
 157     col_set_str(pinfo->cinfo, COL_PROTOCOL, "NSRP");
 158
 159     col_set_str(pinfo->cinfo, COL_INFO, "NSRP Protocol");
 160
 161     if (tree) {
 162                         ti = proto_tree_add_item(tree, proto_nsrp, tvb, 0, -1, ENC_NA);
 163                         nsrp_tree = proto_item_add_subtree(ti, ett_nsrp);
 164
 165
 166                         proto_tree_add_item(nsrp_tree, hf_nsrp_version, tvb, offset, 1, ENC_BIG_ENDIAN);
 167                         offset += 1;
 168
 169                         msgtype = tvb_get_guint8(tvb, offset);
 170                         proto_tree_add_item(nsrp_tree, hf_nsrp_msg_type, tvb, offset, 1, ENC_BIG_ENDIAN);
 171                         offset += 1;
 172
 173                         proto_tree_add_item(nsrp_tree, hf_nsrp_clust_id, tvb, offset, 1, ENC_BIG_ENDIAN);
 174                         offset += 1;
 175
 176                         proto_tree_add_item(nsrp_tree, hf_nsrp_msg_flag, tvb, offset, 1, ENC_BIG_ENDIAN);
 177                         offset += 1;
 178
 179                         proto_tree_add_item(nsrp_tree, hf_nsrp_len, tvb, offset, 2, ENC_BIG_ENDIAN);
 180                         offset += 2;
 181
 182                         proto_tree_add_item(nsrp_tree, hf_nsrp_ha_port, tvb, offset, 1, ENC_BIG_ENDIAN);
 183                         offset += 1;
 184
 185                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, ENC_BIG_ENDIAN);
 186                         offset += 1;
 187
 188                         proto_tree_add_item(nsrp_tree, hf_nsrp_dst_unit, tvb, offset, 4, ENC_BIG_ENDIAN);
 189                         offset += 4;
 190
 191                         proto_tree_add_item(nsrp_tree, hf_nsrp_src_unit, tvb, offset, 4, ENC_BIG_ENDIAN);
 192                         offset += 4;
 193                 }
 194
 195 /*
 196  *
 197  *
 198  *    NSRP HA Packet is defined as follow:
 199  *
 200  *       1         2       3        4        5         6       7        8
 201  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 202  *   | Type   |WstGroup|HstGroup|MSG Flag|     Length      |Enc Flag|Not Used|
 203  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 204  *   |            Total Size             |        NS       |        NR       |
 205  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 206  *   |     No Used     |    Checksum     |              Data                 |
 207  *   +--------+--------+--------+--------+-----------------------------------+
 208  *
 209  *
 210  */
 211
 212                 if ( msgtype == 0x00 ) {
 213
 214                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, ENC_BIG_ENDIAN);
 215                         offset += 1;
 216
 217                         proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
 218                         offset += 1;
 219
 220                         proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
 221                         offset += 1;
 222
 223                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, ENC_BIG_ENDIAN);
 224                         offset += 1;
 225
 226                         proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, ENC_BIG_ENDIAN);
 227                         offset += 2;
 228
 229                         proto_tree_add_item(nsrp_tree, hf_nsrp_encflag, tvb, offset, 1, ENC_BIG_ENDIAN);
 230                         offset += 1;
 231
 232                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, ENC_BIG_ENDIAN);
 233                         offset += 1;
 234
 235                         proto_tree_add_item(nsrp_tree, hf_nsrp_total_size, tvb, offset, 4, ENC_BIG_ENDIAN);
 236                         offset += 4;
 237
 238                         proto_tree_add_item(nsrp_tree, hf_nsrp_ns, tvb, offset, 2, ENC_BIG_ENDIAN);
 239                         offset += 2;
 240
 241                         proto_tree_add_item(nsrp_tree, hf_nsrp_nr, tvb, offset, 2, ENC_BIG_ENDIAN);
 242                         offset += 2;
 243
 244                         proto_tree_add_item(nsrp_tree, hf_nsrp_no_used, tvb, offset, 2, ENC_BIG_ENDIAN);
 245                         offset += 2;
 246
 247                         proto_tree_add_item(nsrp_tree, hf_nsrp_checksum, tvb, offset, 2, ENC_BIG_ENDIAN);
 248                         offset += 2;
 249
 250                         proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, ENC_ASCII|ENC_NA);
 251
 252     }
 253
 254 /*
 255  *
 256  *    NSRP MNG Packet is defined as follow:
 257  *
 258  *       1         2       3        4        5         6       7        8
 259  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 260  *   | Type   |WstGroup|HstGroup|MSG Flag|     Length      |AuthFlag|Not Used|
 261  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 262  *   |Priority+ Dummy  +   Auth CheckSum +                Data               |
 263  *   +--------+--------+--------+--------+-----------------------------------+
 264  *
 265  *
 266  */
 267
 268                 if ( msgtype == 0x02 ) {
 269
 270                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, ENC_BIG_ENDIAN);
 271                         offset += 1;
 272
 273                         proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
 274                         offset += 1;
 275
 276                         proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
 277                         offset += 1;
 278
 279                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, ENC_BIG_ENDIAN);
 280                         offset += 1;
 281
 282                         proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, ENC_BIG_ENDIAN);
 283                         offset += 2;
 284
 285                         proto_tree_add_item(nsrp_tree, hf_nsrp_authflag, tvb, offset, 1, ENC_BIG_ENDIAN);
 286                         offset += 1;
 287
 288                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, ENC_BIG_ENDIAN);
 289                         offset += 1;
 290
 291                         proto_tree_add_item(nsrp_tree, hf_nsrp_priority, tvb, offset, 1, ENC_BIG_ENDIAN);
 292                         offset += 1;
 293
 294                         proto_tree_add_item(nsrp_tree, hf_nsrp_dummy, tvb, offset, 1, ENC_BIG_ENDIAN);
 295                         offset += 1;
 296
 297                         proto_tree_add_item(nsrp_tree, hf_nsrp_authchecksum, tvb, offset, 2, ENC_BIG_ENDIAN);
 298                         offset += 2;
 299
 300                         proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, ENC_ASCII|ENC_NA);
 301
 302     }
 303
 304
 305
 306
 307 /*
 308  *    NSRP DATA Packet is defined as follow:
 309  *
 310  *       1         2       3        4        5         6       7        8
 311  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 312  *   | Type   |WstGroup|HstGroup|MSG Flag|     Length      | Ifnum  |Not Used|
 313  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 314  *   |            Total Size             |                Data               |
 315  *   +--------+--------+--------+--------+-----------------------------------+
 316  *
 317  *
 318  */
 319    if ( msgtype == 0x03 ) {
 320
 321                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, ENC_BIG_ENDIAN);
 322                         offset += 1;
 323
 324                         proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
 325                         offset += 1;
 326
 327                         proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
 328                         offset += 1;
 329
 330                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, ENC_BIG_ENDIAN);
 331                         offset += 1;
 332
 333                         proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, ENC_BIG_ENDIAN);
 334                         offset += 2;
 335
 336                         proto_tree_add_item(nsrp_tree, hf_nsrp_ifnum, tvb, offset, 1, ENC_BIG_ENDIAN);
 337                         offset += 1;
 338
 339                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, ENC_BIG_ENDIAN);
 340                         offset += 1;
 341
 342                         proto_tree_add_item(nsrp_tree, hf_nsrp_total_size, tvb, offset, 4, ENC_BIG_ENDIAN);
 343                         offset += 4;
 344
 345                         proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, ENC_ASCII|ENC_NA);
 346
 347     }
 348
 349 }
 350
 351
 352 void
 353 proto_register_nsrp(void)
 354 {
 355
 356     static hf_register_info hf[] = {
 357         { &hf_nsrp_version,
 358           { "Version", "nsrp.version",
 359             FT_UINT8, BASE_DEC, NULL, 0,
 360             "NSRP Version", HFILL }
 361         },
 362                 { &hf_nsrp_msg_type,
 363           { "Type", "nsrp.type",
 364             FT_UINT8, BASE_DEC, nsrp_msg_type_vals, 0,
 365             "NSRP Message Type", HFILL }
 366         },
 367                 { &hf_nsrp_clust_id,
 368           { "Clust ID", "nsrp.clustid",
 369             FT_UINT8, BASE_DEC, NULL, 0,
 370             "NSRP CLUST ID", HFILL }
 371         },
 372                 { &hf_nsrp_msg_flag,
 373           { "Flag", "nsrp.flag",
 374             FT_UINT8, BASE_DEC, NULL, 0,
 375             "NSRP FLAG", HFILL }
 376         },
 377         { &hf_nsrp_len,
 378           { "Length", "nsrp.length",
 379             FT_UINT16, BASE_DEC, NULL, 0,
 380             "NSRP Length", HFILL }
 381         },
 382                 { &hf_nsrp_ha_port,
 383           { "Port", "nsrp.haport",
 384             FT_UINT8, BASE_DEC, NULL, 0,
 385             "NSRP HA Port", HFILL }
 386         },
 387                 { &hf_nsrp_not_used,
 388           { "Not used", "nsrp.notused",
 389             FT_UINT8, BASE_DEC, NULL, 0,
 390             NULL, HFILL }
 391         },
 392                 { &hf_nsrp_dst_unit,
 393           { "Destination", "nsrp.dst",
 394             FT_UINT32, BASE_DEC, NULL, 0,
 395             "DESTINATION UNIT INFORMATION", HFILL }
 396         },
 397         { &hf_nsrp_src_unit,
 398           { "Source", "nsrp.src",
 399             FT_UINT32, BASE_DEC, NULL, 0,
 400             "SOURCE UNIT INFORMATION", HFILL }
 401         },
 402                 { &hf_nsrp_msgtype,
 403           { "MsgType", "nsrp.msgtype",
 404             FT_UINT8, BASE_DEC, VALS(nsrp_msgtype_vals), 0,
 405             "Message Type", HFILL }
 406         },
 407                 { &hf_nsrp_wst_group,
 408           { "Wst group", "nsrp.wst",
 409             FT_UINT8, BASE_DEC, NULL, 0,
 410             "NSRP WST GROUP", HFILL }
 411         },
 412                 { &hf_nsrp_hst_group,
 413           { "Hst group", "nsrp.hst",
 414             FT_UINT8, BASE_DEC, NULL, 0,
 415             "NSRP HST GROUP", HFILL }
 416         },
 417         { &hf_nsrp_msgflag,
 418           { "Msgflag", "nsrp.msgflag",
 419             FT_UINT8, BASE_DEC, VALS(nsrp_flag_vals), 0,
 420             "NSRP MSG FLAG", HFILL }
 421         },
 422         { &hf_nsrp_msglen,
 423           { "Msg Length", "nsrp.msglen",
 424             FT_UINT16, BASE_DEC, NULL, 0,
 425             "NSRP MESSAGE LENGTH", HFILL }
 426         },
 427
 428         { &hf_nsrp_encflag,
 429           { "Enc Flag", "nsrp.encflag",
 430             FT_UINT8, BASE_DEC, VALS(nsrp_encflag_vals), 0,
 431             "NSRP ENCRYPT FLAG", HFILL }
 432         },
 433 #if 0
 434                 { &hf_nsrp_notused,
 435           { "Not Used", "nsrp.notused",
 436             FT_UINT8, BASE_DEC, NULL, 0,
 437             NULL, HFILL }
 438         },
 439 #endif
 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             NULL, 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_uint("ethertype", ETHERTYPE_NSRP, nsrp_handle);
 515 }