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 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <glib.h>
  31 #include <epan/packet.h>
  32 #include <epan/etypes.h>
  33
  34 #include "packet-hpext.h"
  35
  36 static void dissect_hpsw_tlv(tvbuff_t *tvb, int offset, int length,
  37      proto_tree *tree, proto_item *ti, guint8 type);
  38
  39 static int proto_hpsw = -1;
  40
  41 static int hf_hpsw_version = -1;
  42 static int hf_hpsw_type = -1;
  43 static int hf_hpsw_tlvtype = -1;
  44 static int hf_hpsw_tlvlength = -1;
  45
  46
  47 static gint ett_hpsw = -1;
  48 static gint ett_hpsw_tlv = -1;
  49
  50
  51
  52 #define HPFOO_DEVICE_NAME   0x1
  53 #define HPFOO_DEVICE_VERSION 0x2
  54 #define HPFOO_CONFIG_NAME 0x3
  55 #define HPFOO_IP_ADDR 0x5
  56 #define HPFOO_FIELD_7 0x7
  57 #define HPFOO_FIELD_8 0x8
  58 #define HPFOO_FIELD_9 0x9
  59 #define HPFOO_FIELD_10 0xa
  60 #define HPFOO_FIELD_12 0xc
  61 #define HPFOO_DEVICE_ID 0xd /* Interpretation of this field is an educated guess */
  62 #define HPFOO_MAC_ADDR 0xe
  63
  64 static const value_string hpsw_tlv_type_vals[] = {
  65         { HPFOO_DEVICE_NAME,       "Device Name" },
  66         { HPFOO_DEVICE_VERSION,     "Version" },
  67         { HPFOO_CONFIG_NAME,     "Config" },
  68         { HPFOO_IP_ADDR,     "IP Addr" },
  69         { HPFOO_FIELD_7,     "Field 7" },
  70         { HPFOO_FIELD_8,     "Field 8" },
  71         { HPFOO_FIELD_9,     "Field 9" },
  72         { HPFOO_FIELD_10,     "Field 10" },
  73         { HPFOO_FIELD_12,     "Field 12" },
  74         { HPFOO_DEVICE_ID,    "Device ID" },
  75         { HPFOO_MAC_ADDR,     "MAC Addr" },
  76         { 0x00,               NULL }
  77 };
  78
  79
  80 static void
  81 dissect_hpsw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
  82 {
  83         proto_tree      *hp_tree = NULL;
  84         proto_tree      *tlv_tree = NULL;
  85         proto_item      *ti = NULL;
  86         guint8          version;
  87
  88         if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
  89                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "HP");
  90         }
  91
  92         if (check_col(pinfo->cinfo, COL_INFO)) {
  93                 col_set_str(pinfo->cinfo, COL_INFO, "HP Switch Protocol");
  94         }
  95
  96         version = tvb_get_guint8(tvb, 0);
  97
  98         if (tree) {
  99                 guint16 offset =0;
 100
 101                 ti = proto_tree_add_item(tree, proto_hpsw, tvb, 0, -1, FALSE);
 102                 hp_tree = proto_item_add_subtree(ti, ett_hpsw);
 103                 proto_tree_add_uint(hp_tree, hf_hpsw_version, tvb, 0, 1, version);
 104                 offset++;
 105
 106                 proto_tree_add_item(hp_tree, hf_hpsw_type, tvb, 1, 1, FALSE);
 107                 offset++;
 108
 109                 while ( tvb_reported_length_remaining(tvb, offset) > 0 )
 110                 {
 111                         guint8 type,length;
 112
 113                         type = tvb_get_guint8(tvb, offset);
 114                         length = tvb_get_guint8(tvb, offset+1);
 115
 116                         /* make sure still in valid tlv */
 117                         if (( length < 1 ) || ( length > tvb_length_remaining(tvb,offset+2)))
 118                                 break;
 119
 120                         ti = proto_tree_add_text(hp_tree,tvb,offset,length+2,"%s",
 121                                                 val_to_str(type,hpsw_tlv_type_vals,"Unknown TLV type: 0x%02x"));
 122
 123                         tlv_tree=proto_item_add_subtree(ti,ett_hpsw_tlv);
 124
 125                         /* type */
 126                         proto_tree_add_uint(tlv_tree, hf_hpsw_tlvtype, tvb, offset, 1, type);
 127                         offset++;
 128
 129                         /* LENGTH (not inclusive of type and length bytes) */
 130                         proto_tree_add_uint(tlv_tree, hf_hpsw_tlvlength, tvb, offset, 1, length);
 131                         offset++;
 132
 133                         dissect_hpsw_tlv(tvb,offset,length,tlv_tree,ti,type);
 134
 135                         offset += length;
 136
 137                 }
 138
 139         }
 140 }
 141
 142 static void
 143 dissect_hpsw_tlv(tvbuff_t *tvb, int offset, int length,
 144     proto_tree *tree, proto_item *ti, guint8 type)
 145 {
 146     switch (type) {
 147
 148     case HPFOO_DEVICE_NAME:
 149         if (length > 0) {
 150             proto_item_set_text(ti, "Device Name: %s", tvb_format_text(tvb, offset, length - 1));
 151             proto_tree_add_text(tree, tvb, offset, length, "Device Name: %s", tvb_format_text(tvb, offset, length - 1));
 152         } else {
 153             proto_item_set_text(ti, "Device Name: Bad length %u", length);
 154             proto_tree_add_text(tree, tvb, offset, length, "Device Name: Bad length %u", length);
 155         }
 156         break;
 157
 158     case HPFOO_DEVICE_VERSION:
 159         if (length > 0) {
 160             proto_item_set_text(ti, "Version: %s", tvb_format_text(tvb, offset, length - 1));
 161             proto_tree_add_text(tree, tvb, offset, length, "Version: %s", tvb_format_text(tvb, offset, length - 1));
 162         } else {
 163             proto_item_set_text(ti, "Version: Bad length %u", length);
 164             proto_tree_add_text(tree, tvb, offset, length, "Version: Bad length %u", length);
 165         }
 166         break;
 167
 168     case HPFOO_CONFIG_NAME:
 169         if (length > 0) {
 170             proto_item_set_text(ti, "Config: %s", tvb_format_text(tvb, offset, length - 1));
 171             proto_tree_add_text(tree, tvb, offset, length, "Config: %s", tvb_format_text(tvb, offset, length - 1));
 172         } else {
 173             proto_item_set_text(ti, "Config: Bad length %u", length);
 174             proto_tree_add_text(tree, tvb, offset, length, "Config: Bad length %u", length);
 175         }
 176         break;
 177
 178     case HPFOO_IP_ADDR:
 179         if (length == 4) {
 180             const guint8 *ipptr=tvb_get_ptr(tvb,offset,length);
 181             proto_item_set_text(ti, "IP Addr: %s", ip_to_str(ipptr));
 182             proto_tree_add_text(tree, tvb, offset, length, "IP Addr: %s", ip_to_str(ipptr));
 183         } else {
 184             proto_item_set_text(ti, "IP Addr: Bad length %u", length);
 185             proto_tree_add_text(tree, tvb, offset, length, "IP Addr: Bad length %u", length);
 186         }
 187         break;
 188
 189     case HPFOO_FIELD_7:
 190         if (length == 1) {
 191             proto_item_set_text(ti, "Field 7: 0x%02x", tvb_get_guint8(tvb,offset));
 192             proto_tree_add_text(tree, tvb, offset, length, "Field 7: 0x%02x", tvb_get_guint8(tvb,offset));
 193         } else {
 194             proto_item_set_text(ti, "Field 7: Bad length %u", length);
 195             proto_tree_add_text(tree, tvb, offset, length, "Field 7: Bad length %u", length);
 196         }
 197         break;
 198
 199     case HPFOO_FIELD_8:
 200         if (length == 2) {
 201             proto_item_set_text(ti, "Field 8: 0x%04x", tvb_get_ntohs(tvb,offset));
 202             proto_tree_add_text(tree, tvb, offset, length, "Field 8: 0x%04x", tvb_get_ntohs(tvb,offset));
 203         } else {
 204             proto_item_set_text(ti, "Field 8: Bad length %u", length);
 205             proto_tree_add_text(tree, tvb, offset, length, "Field 8: Bad length %u", length);
 206         }
 207         break;
 208
 209     case HPFOO_FIELD_9:
 210         if (length == 2) {
 211             proto_item_set_text(ti, "Field 9: 0x%04x", tvb_get_ntohs(tvb,offset));
 212             proto_tree_add_text(tree, tvb, offset, length, "Field 9: 0x%04x", tvb_get_ntohs(tvb,offset));
 213         } else {
 214             proto_item_set_text(ti, "Field 9: Bad length %u", length);
 215             proto_tree_add_text(tree, tvb, offset, length, "Field 9: Bad length %u", length);
 216         }
 217         break;
 218
 219     case HPFOO_FIELD_10:
 220         if (length == 4) {
 221             proto_item_set_text(ti, "Field 10: 0x%08x", tvb_get_ntohl(tvb,offset));
 222             proto_tree_add_text(tree, tvb, offset, length, "Field 10: 0x%08x", tvb_get_ntohl(tvb,offset));
 223         } else {
 224             proto_item_set_text(ti, "Field 10: Bad length %u", length);
 225             proto_tree_add_text(tree, tvb, offset, length, "Field 10: Bad length %u", length);
 226         }
 227         break;
 228
 229     case HPFOO_FIELD_12:
 230         if (length == 1) {
 231             proto_item_set_text(ti, "Field 12: 0x%02x", tvb_get_guint8(tvb,offset));
 232             proto_tree_add_text(tree, tvb, offset, length, "Field 12: 0x%02x", tvb_get_guint8(tvb,offset));
 233         } else {
 234             proto_item_set_text(ti, "Field 12: Bad length %u", length);
 235             proto_tree_add_text(tree, tvb, offset, length, "Field 12: Bad length %u", length);
 236         }
 237         break;
 238
 239     case HPFOO_DEVICE_ID:
 240         if (length == 10) {
 241             const guint8 *macptr=tvb_get_ptr(tvb,offset,6);
 242             guint32 id=tvb_get_ntohl(tvb, offset+6);
 243             proto_item_set_text(ti, "Device ID: %s / %u", ether_to_str(macptr), id);
 244             proto_tree_add_text(tree, tvb, offset, 10, "Device ID: %s / %u", ether_to_str(macptr), id);
 245         } else {
 246             proto_item_set_text(ti, "Device ID: Bad length %u", length);
 247             proto_tree_add_text(tree, tvb, offset, length, "Device ID: Bad length %u", length);
 248         }
 249         break;
 250
 251     case HPFOO_MAC_ADDR:
 252         if (length == 6) {
 253             const guint8 *macptr=tvb_get_ptr(tvb,offset,length);
 254             proto_item_set_text(ti, "MAC Addr: %s", ether_to_str(macptr));
 255             proto_tree_add_text(tree, tvb, offset, length, "MAC Addr: %s", ether_to_str(macptr));
 256         } else {
 257             proto_item_set_text(ti, "MAC Addr: Bad length %u", length);
 258             proto_tree_add_text(tree, tvb, offset, length, "MAC Addr: Bad length %u", length);
 259         }
 260         break;
 261
 262     default:
 263         proto_tree_add_text(tree, tvb, offset, length, "Data");
 264         break;
 265     }
 266 }
 267
 268
 269
 270
 271 void
 272 proto_register_hpsw(void)
 273 {
 274         static hf_register_info hf[] = {
 275                 { &hf_hpsw_version,
 276                 { "Version", "hpsw.version", FT_UINT8, BASE_HEX,
 277                         NULL, 0x0, "", HFILL }},
 278                 { &hf_hpsw_type,
 279                 { "Type", "hpsw.type", FT_UINT8, BASE_HEX,
 280                         NULL, 0x0, "", HFILL }},
 281                 { &hf_hpsw_tlvtype,
 282                 { "Type", "hpsw.tlv_type", FT_UINT8, BASE_HEX,
 283                         VALS(hpsw_tlv_type_vals), 0x0, "", HFILL }},
 284                 { &hf_hpsw_tlvlength,
 285                 { "Length", "hpsw.tlv_len", FT_UINT8, BASE_DEC,
 286                         NULL, 0x0, "", HFILL }}
 287         };
 288
 289         static gint *ett[] = {
 290                 &ett_hpsw,
 291                 &ett_hpsw_tlv
 292         };
 293
 294         proto_hpsw = proto_register_protocol( "HP Switch Protocol", "HPSW", "hpsw");
 295         proto_register_field_array(proto_hpsw, hf, array_length(hf));
 296         proto_register_subtree_array(ett, array_length(ett));
 297
 298         register_dissector("hpsw", dissect_hpsw, proto_hpsw);
 299 }
 300
 301 void
 302 proto_reg_handoff_hpsw(void)
 303 {
 304         dissector_handle_t hpsw_handle;
 305
 306         hpsw_handle = find_dissector("hpsw");
 307
 308         dissector_add("hpext.dxsap", HPEXT_HPSW, hpsw_handle);
 309 }