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     if (check_col(pinfo->cinfo, COL_INFO))
 162     {
 163                         col_set_str(pinfo->cinfo, COL_INFO, "NSRP Protocol");
 164                 }
 165
 166     if (tree) {
 167                         ti = proto_tree_add_item(tree, proto_nsrp, tvb, 0, -1, FALSE);
 168                         nsrp_tree = proto_item_add_subtree(ti, ett_nsrp);
 169
 170
 171                         proto_tree_add_item(nsrp_tree, hf_nsrp_version, tvb, offset, 1, FALSE);
 172                         offset += 1;
 173
 174                         msgtype = tvb_get_guint8(tvb, offset);
 175                         proto_tree_add_item(nsrp_tree, hf_nsrp_msg_type, tvb, offset, 1, FALSE);
 176                         offset += 1;
 177
 178                         proto_tree_add_item(nsrp_tree, hf_nsrp_clust_id, tvb, offset, 1, FALSE);
 179                         offset += 1;
 180
 181                         proto_tree_add_item(nsrp_tree, hf_nsrp_msg_flag, tvb, offset, 1, FALSE);
 182                         offset += 1;
 183
 184                         proto_tree_add_item(nsrp_tree, hf_nsrp_len, tvb, offset, 2, FALSE);
 185                         offset += 2;
 186
 187                         proto_tree_add_item(nsrp_tree, hf_nsrp_ha_port, tvb, offset, 1, FALSE);
 188                         offset += 1;
 189
 190                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, FALSE);
 191                         offset += 1;
 192
 193                         proto_tree_add_item(nsrp_tree, hf_nsrp_dst_unit, tvb, offset, 4, FALSE);
 194                         offset += 4;
 195
 196                         proto_tree_add_item(nsrp_tree, hf_nsrp_src_unit, tvb, offset, 4, FALSE);
 197                         offset += 4;
 198                 }
 199
 200 /*
 201  *
 202  *
 203  *    NSRP HA Packet is defined as follow:
 204  *
 205  *       1         2       3        4        5         6       7        8
 206  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 207  *   | Type   |WstGroup|HstGroup|MSG Flag|     Length      |Enc Flag|Not Used|
 208  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 209  *   |            Total Size             |        NS       |        NR       |
 210  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 211  *   |     No Used     |    Checksum     |              Data                 |
 212  *   +--------+--------+--------+--------+-----------------------------------+
 213  *
 214  *
 215  */
 216
 217                 if ( msgtype == 0x00 ) {
 218
 219                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, FALSE);
 220                         offset += 1;
 221
 222                         proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, FALSE);
 223                         offset += 1;
 224
 225                         proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, FALSE);
 226                         offset += 1;
 227
 228                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, FALSE);
 229                         offset += 1;
 230
 231                         proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, FALSE);
 232                         offset += 2;
 233
 234                         proto_tree_add_item(nsrp_tree, hf_nsrp_encflag, tvb, offset, 1, FALSE);
 235                         offset += 1;
 236
 237                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, FALSE);
 238                         offset += 1;
 239
 240                         proto_tree_add_item(nsrp_tree, hf_nsrp_total_size, tvb, offset, 4, FALSE);
 241                         offset += 4;
 242
 243                         proto_tree_add_item(nsrp_tree, hf_nsrp_ns, tvb, offset, 2, FALSE);
 244                         offset += 2;
 245
 246                         proto_tree_add_item(nsrp_tree, hf_nsrp_nr, tvb, offset, 2, FALSE);
 247                         offset += 2;
 248
 249                         proto_tree_add_item(nsrp_tree, hf_nsrp_no_used, tvb, offset, 2, FALSE);
 250                         offset += 2;
 251
 252                         proto_tree_add_item(nsrp_tree, hf_nsrp_checksum, tvb, offset, 2, FALSE);
 253                         offset += 2;
 254
 255                         proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, FALSE);
 256
 257     }
 258
 259 /*
 260  *
 261  *    NSRP MNG Packet is defined as follow:
 262  *
 263  *       1         2       3        4        5         6       7        8
 264  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 265  *   | Type   |WstGroup|HstGroup|MSG Flag|     Length      |AuthFlag|Not Used|
 266  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 267  *   |Priority+ Dummy  +   Auth CheckSum +                Data               |
 268  *   +--------+--------+--------+--------+-----------------------------------+
 269  *
 270  *
 271  */
 272
 273                 if ( msgtype == 0x02 ) {
 274
 275                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, FALSE);
 276                         offset += 1;
 277
 278                         proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, FALSE);
 279                         offset += 1;
 280
 281                         proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, FALSE);
 282                         offset += 1;
 283
 284                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, FALSE);
 285                         offset += 1;
 286
 287                         proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, FALSE);
 288                         offset += 2;
 289
 290                         proto_tree_add_item(nsrp_tree, hf_nsrp_authflag, tvb, offset, 1, FALSE);
 291                         offset += 1;
 292
 293                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, FALSE);
 294                         offset += 1;
 295
 296                         proto_tree_add_item(nsrp_tree, hf_nsrp_priority, tvb, offset, 1, FALSE);
 297                         offset += 1;
 298
 299                         proto_tree_add_item(nsrp_tree, hf_nsrp_dummy, tvb, offset, 1, FALSE);
 300                         offset += 1;
 301
 302                         proto_tree_add_item(nsrp_tree, hf_nsrp_authchecksum, tvb, offset, 2, FALSE);
 303                         offset += 2;
 304
 305                         proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, FALSE);
 306
 307     }
 308
 309
 310
 311
 312 /*
 313  *    NSRP DATA Packet is defined as follow:
 314  *
 315  *       1         2       3        4        5         6       7        8
 316  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 317  *   | Type   |WstGroup|HstGroup|MSG Flag|     Length      | Ifnum  |Not Used|
 318  *   +--------+--------+--------+--------+--------+--------+--------+--------+
 319  *   |            Total Size             |                Data               |
 320  *   +--------+--------+--------+--------+-----------------------------------+
 321  *
 322  *
 323  */
 324    if ( msgtype == 0x03 ) {
 325
 326                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, FALSE);
 327                         offset += 1;
 328
 329                         proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, FALSE);
 330                         offset += 1;
 331
 332                         proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, FALSE);
 333                         offset += 1;
 334
 335                         proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, FALSE);
 336                         offset += 1;
 337
 338                         proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, FALSE);
 339                         offset += 2;
 340
 341                         proto_tree_add_item(nsrp_tree, hf_nsrp_ifnum, tvb, offset, 1, FALSE);
 342                         offset += 1;
 343
 344                         proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, FALSE);
 345                         offset += 1;
 346
 347                         proto_tree_add_item(nsrp_tree, hf_nsrp_total_size, tvb, offset, 4, FALSE);
 348                         offset += 4;
 349
 350                         proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, FALSE);
 351
 352     }
 353
 354 }
 355
 356
 357 void
 358 proto_register_nsrp(void)
 359 {
 360
 361     static hf_register_info hf[] = {
 362         { &hf_nsrp_version,
 363           { "Version", "nsrp.version",
 364             FT_UINT8, BASE_DEC, NULL, 0,
 365             "NSRP Version", HFILL }
 366         },
 367                 { &hf_nsrp_msg_type,
 368           { "Type", "nsrp.type",
 369             FT_UINT8, BASE_DEC, nsrp_msg_type_vals, 0,
 370             "NSRP Message Type", HFILL }
 371         },
 372                 { &hf_nsrp_clust_id,
 373           { "Clust ID", "nsrp.clustid",
 374             FT_UINT8, BASE_DEC, NULL, 0,
 375             "NSRP CLUST ID", HFILL }
 376         },
 377                 { &hf_nsrp_msg_flag,
 378           { "Flag", "nsrp.flag",
 379             FT_UINT8, BASE_DEC, NULL, 0,
 380             "NSRP FLAG", HFILL }
 381         },
 382         { &hf_nsrp_len,
 383           { "Length", "nsrp.length",
 384             FT_UINT16, BASE_DEC, NULL, 0,
 385             "NSRP Length", HFILL }
 386         },
 387                 { &hf_nsrp_ha_port,
 388           { "Port", "nsrp.haport",
 389             FT_UINT8, BASE_DEC, NULL, 0,
 390             "NSRP HA Port", HFILL }
 391         },
 392                 { &hf_nsrp_not_used,
 393           { "Not used", "nsrp.notused",
 394             FT_UINT8, BASE_DEC, NULL, 0,
 395             "NOT USED", HFILL }
 396         },
 397                 { &hf_nsrp_dst_unit,
 398           { "Destination", "nsrp.dst",
 399             FT_UINT32, BASE_DEC, NULL, 0,
 400             "DESTINATION UNIT INFORMATION", HFILL }
 401         },
 402         { &hf_nsrp_src_unit,
 403           { "Source", "nsrp.src",
 404             FT_UINT32, BASE_DEC, NULL, 0,
 405             "SOURCE UNIT INFORMATION", HFILL }
 406         },
 407                 { &hf_nsrp_msgtype,
 408           { "MsgType", "nsrp.msgtype",
 409             FT_UINT8, BASE_DEC, VALS(nsrp_msgtype_vals), 0,
 410             "Message Type", HFILL }
 411         },
 412                 { &hf_nsrp_wst_group,
 413           { "Wst group", "nsrp.wst",
 414             FT_UINT8, BASE_DEC, NULL, 0,
 415             "NSRP WST GROUP", HFILL }
 416         },
 417                 { &hf_nsrp_hst_group,
 418           { "Hst group", "nsrp.hst",
 419             FT_UINT8, BASE_DEC, NULL, 0,
 420             "NSRP HST GROUP", HFILL }
 421         },
 422         { &hf_nsrp_msgflag,
 423           { "Msgflag", "nsrp.msgflag",
 424             FT_UINT8, BASE_DEC, VALS(nsrp_flag_vals), 0,
 425             "NSRP MSG FLAG", HFILL }
 426         },
 427         { &hf_nsrp_msglen,
 428           { "Msg Length", "nsrp.msglen",
 429             FT_UINT16, BASE_DEC, NULL, 0,
 430             "NSRP MESSAGE LENGTH", HFILL }
 431         },
 432
 433         { &hf_nsrp_encflag,
 434           { "Enc Flag", "nsrp.encflag",
 435             FT_UINT8, BASE_DEC, VALS(nsrp_encflag_vals), 0,
 436             "NSRP ENCRYPT FLAG", HFILL }
 437         },
 438                 { &hf_nsrp_notused,
 439           { "Not Used", "nsrp.notused",
 440             FT_UINT8, BASE_DEC, NULL, 0,
 441             "NOT USED", HFILL }
 442         },
 443                 { &hf_nsrp_total_size,
 444           { "Total Size", "nsrp.totalsize",
 445             FT_UINT32, BASE_DEC, NULL, 0,
 446             "NSRP MSG TOTAL MESSAGE", HFILL }
 447         },
 448                 { &hf_nsrp_ns,
 449           { "Ns", "nsrp.ns",
 450             FT_UINT16, BASE_DEC, NULL, 0,
 451             NULL, HFILL }
 452         },
 453                 { &hf_nsrp_nr,
 454           { "Nr", "nsrp.nr",
 455             FT_UINT16, BASE_DEC, NULL, 0,
 456             NULL, HFILL }
 457         },
 458                 { &hf_nsrp_no_used,
 459           { "Reserved", "nsrp.reserved",
 460             FT_UINT16, BASE_DEC, NULL, 0,
 461             "RESERVED", HFILL }
 462         },
 463                 { &hf_nsrp_checksum,
 464           { "Checksum", "nsrp.checksum",
 465             FT_UINT16, BASE_HEX, NULL, 0,
 466             "NSRP PACKET CHECKSUM", HFILL }
 467         },
 468                 { &hf_nsrp_authflag,
 469           { "AuthFlag", "nsrp.authflag",
 470             FT_UINT8, BASE_HEX, NULL, 0,
 471             "NSRP Auth Flag", HFILL }
 472         },
 473                         { &hf_nsrp_priority,
 474           { "Priority", "nsrp.priority",
 475             FT_UINT8, BASE_HEX, NULL, 0,
 476             "NSRP Priority", HFILL }
 477         },
 478                         { &hf_nsrp_dummy,
 479           { "Dummy", "nsrp.dummy",
 480             FT_UINT8, BASE_HEX, NULL, 0,
 481             "NSRP Dummy", HFILL }
 482         },
 483                 { &hf_nsrp_authchecksum,
 484           { "Checksum", "nsrp.authchecksum",
 485             FT_UINT16, BASE_HEX, NULL, 0,
 486             "NSRP AUTH CHECKSUM", HFILL }
 487         },
 488                 { &hf_nsrp_ifnum,
 489           { "Ifnum", "nsrp.ifnum",
 490             FT_UINT16, BASE_HEX, NULL, 0,
 491             "NSRP IfNum", HFILL }
 492         },
 493         { &hf_nsrp_data,
 494           { "Data", "nsrp.data",
 495             FT_STRING, BASE_NONE, NULL, 0,
 496             "PADDING", HFILL }
 497         }
 498     };
 499
 500     static gint *ett[] = {
 501         &ett_nsrp
 502     };
 503
 504     proto_nsrp = proto_register_protocol("Juniper Netscreen Redundant Protocol",
 505         "NSRP", "nsrp");
 506     proto_register_field_array(proto_nsrp, hf, array_length(hf));
 507     proto_register_subtree_array(ett, array_length(ett));
 508 }
 509
 510
 511 void
 512 proto_reg_handoff_nsrp(void)
 513 {
 514     dissector_handle_t nsrp_handle;
 515
 516     nsrp_handle = create_dissector_handle(dissect_nsrp, proto_nsrp);
 517     dissector_add("ethertype", ETHERTYPE_NSRP, nsrp_handle);
 518 }