epan/dissectors/packet-hpsw.c

   1 /* packet-hpsw.c
   2  * Routines for HP Switch Config protocol
   3  * Charlie Lenahan <clenahan@fortresstech.com>
   4  *
   5  * $Id$
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  24  */
  25
  26 #include "config.h"
  27
  28 #include <glib.h>
  29 #include <epan/packet.h>
  30 #include <epan/etypes.h>
  31 #include <epan/expert.h>
  32
  33 #include "packet-hpext.h"
  34
  35 static int proto_hpsw = -1;
  36
  37 static int hf_hpsw_version = -1;
  38 static int hf_hpsw_type = -1;
  39 static int hf_hpsw_tlvtype = -1;
  40 static int hf_hpsw_tlvlength = -1;
  41 static int hf_hpsw_field_10 = -1;
  42 static int hf_hpsw_own_mac_addr = -1;
  43 static int hf_hpsw_neighbor_mac_addr = -1;
  44 static int hf_hpsw_field_6 = -1;
  45 static int hf_hpsw_field_9 = -1;
  46 static int hf_hpsw_device_version = -1;
  47 static int hf_hpsw_device_name = -1;
  48 static int hf_hpsw_ip_addr = -1;
  49 static int hf_hpsw_field_8 = -1;
  50 static int hf_hpsw_domain = -1;
  51 static int hf_hpsw_field_12 = -1;
  52 static int hf_hpsw_config_name = -1;
  53 static int hf_hpsw_root_mac_addr = -1;
  54 static int hf_hpsw_device_id = -1;
  55 static int hf_hpsw_device_id_data = -1;
  56
  57
  58 static gint ett_hpsw = -1;
  59 static gint ett_hpsw_tlv = -1;
  60
  61 static expert_field ei_hpsw_tlvlength_bad = EI_INIT;
  62
  63 #define HPFOO_DEVICE_NAME     0x1
  64 #define HPFOO_DEVICE_VERSION  0x2
  65 #define HPFOO_CONFIG_NAME     0x3
  66 #define HPFOO_ROOT_MAC_ADDR   0x4
  67 #define HPFOO_IP_ADDR         0x5
  68 #define HPFOO_FIELD_6         0x6
  69 #define HPFOO_DOMAIN          0x7
  70 #define HPFOO_FIELD_8         0x8
  71 #define HPFOO_FIELD_9         0x9
  72 #define HPFOO_FIELD_10        0xa
  73 #define HPFOO_NEIGHBORS       0xb
  74 #define HPFOO_FIELD_12        0xc
  75 #define HPFOO_DEVICE_ID       0xd
  76 #define HPFOO_OWN_MAC_ADDR    0xe
  77
  78 static const value_string hpsw_tlv_type_vals[] = {
  79         { HPFOO_DEVICE_NAME,    "Device Name" },
  80         { HPFOO_DEVICE_VERSION, "Version" },
  81         { HPFOO_CONFIG_NAME,    "Config Name" },
  82         { HPFOO_ROOT_MAC_ADDR,  "Root MAC Addr" },
  83         { HPFOO_IP_ADDR,        "IP Addr" },
  84         { HPFOO_FIELD_6,        "Field 6" },
  85         { HPFOO_DOMAIN,         "Domain" },
  86         { HPFOO_FIELD_8,        "Field 8" },
  87         { HPFOO_FIELD_9,        "Field 9" },
  88         { HPFOO_FIELD_10,       "Field 10" },
  89         { HPFOO_NEIGHBORS,      "Neighbors" },
  90         { HPFOO_FIELD_12,       "Field 12" },
  91         { HPFOO_DEVICE_ID,      "Device ID" },
  92         { HPFOO_OWN_MAC_ADDR,   "2nd MAC Addr" },
  93         { 0x00,                 NULL }
  94 };
  95
  96 static void
  97 dissect_hpsw_tlv(tvbuff_t *tvb, packet_info *pinfo, int offset, int length,
  98     proto_tree *tree, proto_item *ti, guint8 type)
  99 {
 100         switch (type) {
 101
 102         case HPFOO_DEVICE_NAME:
 103                 if (length > 0) {
 104                         proto_tree_add_item(tree, hf_hpsw_device_name, tvb, offset, length, ENC_NA|ENC_ASCII);
 105                 } else {
 106                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Device Name: Bad length %u", length);
 107                 }
 108                 break;
 109
 110         case HPFOO_DEVICE_VERSION:
 111                 if (length > 0) {
 112                         proto_tree_add_item(tree, hf_hpsw_device_version, tvb, offset, length, ENC_NA|ENC_ASCII);
 113                 } else {
 114                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Version: Bad length %u", length);
 115                 }
 116                 break;
 117
 118         case HPFOO_CONFIG_NAME:
 119                 if (length > 0) {
 120                         proto_tree_add_item(tree, hf_hpsw_config_name, tvb, offset, length, ENC_NA|ENC_ASCII);
 121                 } else {
 122                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Config Name: Bad length %u", length);
 123                 }
 124                 break;
 125
 126         case HPFOO_ROOT_MAC_ADDR:
 127                 if (length == 6) {
 128                         proto_tree_add_item(tree, hf_hpsw_root_mac_addr, tvb, offset, length, ENC_NA);
 129                 } else {
 130                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Root MAC Addr: Bad length %u", length);
 131                 }
 132                 break;
 133
 134         case HPFOO_IP_ADDR:
 135                 if (length == 4) {
 136                         proto_tree_add_item(tree, hf_hpsw_ip_addr, tvb, offset, length, ENC_BIG_ENDIAN);
 137                 } else {
 138                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "IP Addr: Bad length %u", length);
 139                 }
 140                 break;
 141
 142         case HPFOO_FIELD_6:
 143                 if (length == 2) {
 144                         proto_tree_add_item(tree, hf_hpsw_field_6, tvb, offset, length, ENC_BIG_ENDIAN);
 145                 } else {
 146                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Field 6: Bad length %u", length);
 147                 }
 148                 break;
 149
 150         case HPFOO_DOMAIN:
 151                 if (length > 0) {
 152                         proto_tree_add_item(tree, hf_hpsw_domain, tvb, offset, length, ENC_NA|ENC_ASCII);
 153                 } else {
 154                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Domain: Bad length %u", length);
 155                 }
 156                 break;
 157
 158         case HPFOO_FIELD_8:
 159                 if (length == 2) {
 160                         proto_tree_add_item(tree, hf_hpsw_field_8, tvb, offset, length, ENC_BIG_ENDIAN);
 161                 } else {
 162                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Field 8: Bad length %u", length);
 163                 }
 164                 break;
 165
 166         case HPFOO_FIELD_9:
 167                 if (length == 2) {
 168                         proto_tree_add_item(tree, hf_hpsw_field_9, tvb, offset, length, ENC_BIG_ENDIAN);
 169                 } else {
 170                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Field 9: Bad length %u", length);
 171                 }
 172                 break;
 173
 174         case HPFOO_FIELD_10:
 175                 if (length == 4) {
 176                         proto_tree_add_item(tree, hf_hpsw_field_10, tvb, offset, length, ENC_BIG_ENDIAN);
 177                 } else {
 178                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Field 10: Bad length %u", length);
 179                 }
 180                 break;
 181
 182         case HPFOO_NEIGHBORS:
 183                 if (!(length % 6))
 184                 {   int i = length/6;
 185                         proto_item_set_text(ti, "Number of neighbor MAC Addresses: %u", i);
 186                         for ( ; i; i--)
 187                         {
 188                                 proto_tree_add_item(tree, hf_hpsw_neighbor_mac_addr, tvb, offset, length, ENC_NA);
 189                                 offset += 6;
 190                         }
 191                 } else {
 192                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Neighbors: Bad length %u", length);
 193                 }
 194                 break;
 195
 196         case HPFOO_FIELD_12:
 197                 if (length == 1) {
 198                         proto_tree_add_item(tree, hf_hpsw_field_12, tvb, offset, length, ENC_NA);
 199                 } else {
 200                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Field 12: Bad length %u", length);
 201                 }
 202                 break;
 203
 204         case HPFOO_DEVICE_ID:
 205                 if (length > 6) {
 206                         proto_tree_add_item(tree, hf_hpsw_device_id, tvb, offset, 6, ENC_NA);
 207                         proto_tree_add_item(tree, hf_hpsw_device_id_data, tvb, offset+6, length-6, ENC_NA);
 208                 } else {
 209                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Device ID: Bad length %u", length);
 210                 }
 211                 break;
 212
 213         case HPFOO_OWN_MAC_ADDR:
 214                 if (length == 6) {
 215                         proto_tree_add_item(tree, hf_hpsw_own_mac_addr, tvb, offset, length, ENC_NA);
 216                 } else {
 217                         expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Own MAC Addr: Bad length %u", length);
 218                 }
 219                 break;
 220
 221         default:
 222                 proto_tree_add_text(tree, tvb, offset, length, "Data");
 223                 break;
 224         }
 225 }
 226
 227 static void
 228 dissect_hpsw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 229 {
 230         proto_tree      *hp_tree = NULL;
 231         proto_tree      *tlv_tree = NULL;
 232         proto_item      *ti = NULL;
 233         guint8          version;
 234
 235         col_set_str(pinfo->cinfo, COL_PROTOCOL, "HP");
 236
 237         col_set_str(pinfo->cinfo, COL_INFO, "HP Switch Protocol");
 238
 239         version = tvb_get_guint8(tvb, 0);
 240
 241         if (tree) {
 242                 guint16 offset =0;
 243
 244                 ti = proto_tree_add_item(tree, proto_hpsw, tvb, 0, -1, ENC_NA);
 245                 hp_tree = proto_item_add_subtree(ti, ett_hpsw);
 246                 proto_tree_add_uint(hp_tree, hf_hpsw_version, tvb, 0, 1, version);
 247                 offset++;
 248
 249                 proto_tree_add_item(hp_tree, hf_hpsw_type, tvb, 1, 1, ENC_BIG_ENDIAN);
 250                 offset++;
 251
 252                 while ( tvb_reported_length_remaining(tvb, offset) > 0 )
 253                 {
 254                         guint8 type,length;
 255
 256                         type = tvb_get_guint8(tvb, offset);
 257                         length = tvb_get_guint8(tvb, offset+1);
 258
 259                         /* make sure still in valid tlv */
 260                         if (( length < 1 ) || ( length > tvb_length_remaining(tvb,offset+2)))
 261                                 break;
 262
 263                         ti = proto_tree_add_text(hp_tree,tvb,offset,length+2,"%s",
 264                                                 val_to_str(type,hpsw_tlv_type_vals,"Unknown TLV type: 0x%02x"));
 265
 266                         tlv_tree=proto_item_add_subtree(ti,ett_hpsw_tlv);
 267
 268                         /* type */
 269                         proto_tree_add_uint(tlv_tree, hf_hpsw_tlvtype, tvb, offset, 1, type);
 270                         offset++;
 271
 272                         /* LENGTH (not inclusive of type and length bytes) */
 273                         proto_tree_add_uint(tlv_tree, hf_hpsw_tlvlength, tvb, offset, 1, length);
 274                         offset++;
 275
 276                         dissect_hpsw_tlv(tvb,pinfo,offset,length,tlv_tree,ti,type);
 277
 278                         offset += length;
 279
 280                 }
 281
 282         }
 283 }
 284
 285 void
 286 proto_register_hpsw(void)
 287 {
 288         static hf_register_info hf[] = {
 289                 { &hf_hpsw_version,
 290                 { "Version", "hpsw.version", FT_UINT8, BASE_HEX,
 291                         NULL, 0x0, NULL, HFILL }},
 292                 { &hf_hpsw_type,
 293                 { "Type", "hpsw.type", FT_UINT8, BASE_HEX,
 294                         NULL, 0x0, NULL, HFILL }},
 295                 { &hf_hpsw_tlvtype,
 296                 { "Type", "hpsw.tlv_type", FT_UINT8, BASE_HEX,
 297                         VALS(hpsw_tlv_type_vals), 0x0, NULL, HFILL }},
 298                 { &hf_hpsw_tlvlength,
 299                 { "Length", "hpsw.tlv_len", FT_UINT8, BASE_DEC,
 300                         NULL, 0x0, NULL, HFILL }},
 301                 { &hf_hpsw_device_name, { "Device Name", "hpsw.device_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 302                 { &hf_hpsw_device_version, { "Version", "hpsw.device_version", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 303                 { &hf_hpsw_config_name, { "Config Name", "hpsw.config_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 304                 { &hf_hpsw_root_mac_addr, { "Root MAC Addr", "hpsw.root_mac_addr", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 305                 { &hf_hpsw_ip_addr, { "IP Addr", "hpsw.ip_addr", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 306                 { &hf_hpsw_field_6, { "Field 6", "hpsw.field_6", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
 307                 { &hf_hpsw_domain, { "Domain", "hpsw.domain", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 308                 { &hf_hpsw_field_8, { "Field 8", "hpsw.field_8", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
 309                 { &hf_hpsw_field_9, { "Field 9", "hpsw.field_9", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
 310                 { &hf_hpsw_field_10, { "Field 10", "hpsw.field_10", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }},
 311                 { &hf_hpsw_neighbor_mac_addr, { "MAC Addr", "hpsw.neighbor_mac_addr", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 312                 { &hf_hpsw_field_12, { "Field 12", "hpsw.field_12", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
 313                 { &hf_hpsw_own_mac_addr, { "Own MAC Addr", "hpsw.own_mac_addr", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 314                 { &hf_hpsw_device_id, { "Device ID", "hpsw.device_id", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 315                 { &hf_hpsw_device_id_data, { "Data", "hpsw.device_id_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 316         };
 317
 318         static gint *ett[] = {
 319                 &ett_hpsw,
 320                 &ett_hpsw_tlv
 321         };
 322
 323         static ei_register_info ei[] = {
 324                 { &ei_hpsw_tlvlength_bad, { "hpsw.tlv_len.bad", PI_PROTOCOL, PI_WARN, "Bad length", EXPFILL }},
 325         };
 326
 327         expert_module_t* expert_hpsw;
 328
 329         proto_hpsw = proto_register_protocol( "HP Switch Protocol", "HPSW", "hpsw");
 330         proto_register_field_array(proto_hpsw, hf, array_length(hf));
 331         proto_register_subtree_array(ett, array_length(ett));
 332         expert_hpsw = expert_register_protocol(proto_hpsw);
 333         expert_register_field_array(expert_hpsw, ei, array_length(ei));
 334
 335         register_dissector("hpsw", dissect_hpsw, proto_hpsw);
 336 }
 337
 338 void
 339 proto_reg_handoff_hpsw(void)
 340 {
 341         dissector_handle_t hpsw_handle;
 342
 343         hpsw_handle = find_dissector("hpsw");
 344
 345         dissector_add_uint("hpext.dxsap", HPEXT_HPSW, hpsw_handle);
 346 }
 347
 348 /*
 349  * Editor modelines
 350  *
 351  * Local Variables:
 352  * c-basic-offset: 4
 353  * tab-width: 8
 354  * indent-tabs-mode: nil
 355  * End:
 356  *
 357  * ex: set shiftwidth=4 tabstop=8 expandtab:
 358  * :indentSize=4:tabSize=8:noTabs=true:
 359  */