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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, 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_MAC_ADDR 0xe
  61
  62 static const value_string hpsw_tlv_type_vals[] = {
  63         { HPFOO_DEVICE_NAME,       "Device Name" },
  64         { HPFOO_DEVICE_VERSION,     "Version" },
  65         { HPFOO_CONFIG_NAME,     "Config" },
  66         { HPFOO_IP_ADDR,     "IP Addr" },
  67         { HPFOO_FIELD_7,     "Field 7" },
  68         { HPFOO_FIELD_8,     "Field 8" },
  69         { HPFOO_FIELD_9,     "Field 9" },
  70         { HPFOO_FIELD_10,     "Field 10" },
  71         { HPFOO_MAC_ADDR,     "MAC Addr" },
  72         { 0x00,               NULL }
  73 };
  74
  75
  76 static void
  77 dissect_hpsw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
  78 {
  79         proto_tree      *hp_tree = NULL;
  80         proto_tree      *tlv_tree = NULL;
  81         proto_item      *ti = NULL;
  82         guint8          version;
  83
  84         if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
  85                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "HP");
  86         }
  87
  88         if (check_col(pinfo->cinfo, COL_INFO)) {
  89                 col_set_str(pinfo->cinfo, COL_INFO, "HP Switch Protocol");
  90         }
  91
  92         version = tvb_get_guint8(tvb, 0);
  93
  94         if (tree) {
  95                 guint16 offset =0;
  96
  97                 ti = proto_tree_add_item(tree, proto_hpsw, tvb, 0, -1, FALSE);
  98                 hp_tree = proto_item_add_subtree(ti, ett_hpsw);
  99                 proto_tree_add_uint(hp_tree, hf_hpsw_version, tvb, 0, 1, version);
 100                 offset++;
 101
 102                 proto_tree_add_item(hp_tree, hf_hpsw_type, tvb, 1, 1, FALSE);
 103                 offset++;
 104
 105                 while ( tvb_reported_length_remaining(tvb, offset) > 0 )
 106                 {
 107                         guint8 type,length;
 108
 109                         type = tvb_get_guint8(tvb, offset);
 110                         length = tvb_get_guint8(tvb, offset+1);
 111
 112                         /* make sure still in valid tlv */
 113                         if (( length < 1 ) || ( length > tvb_length_remaining(tvb,offset+2)))
 114                                 break;
 115
 116                         ti = proto_tree_add_text(hp_tree,tvb,offset,length+2,"%s",
 117                                                 val_to_str(type,hpsw_tlv_type_vals,"Unknown TLV type: 0x%02x"));
 118
 119                         tlv_tree=proto_item_add_subtree(ti,ett_hpsw_tlv);
 120
 121                         /* type */
 122                         proto_tree_add_uint(tlv_tree, hf_hpsw_tlvtype, tvb, offset, 1, type);
 123                         offset++;
 124
 125                         /* LENGTH (not inclusive of type and length bytes) */
 126                         proto_tree_add_uint(tlv_tree, hf_hpsw_tlvlength, tvb, offset, 1, length);
 127                         offset++;
 128
 129                         dissect_hpsw_tlv(tvb,offset,length,tlv_tree,ti,type);
 130
 131                         offset += length;
 132
 133                 }
 134
 135         }
 136 }
 137
 138 static void
 139 dissect_hpsw_tlv(tvbuff_t *tvb, int offset, int length,
 140     proto_tree *tree, proto_item *ti, guint8 type)
 141 {
 142     switch (type) {
 143
 144     case HPFOO_DEVICE_NAME:
 145         if (length > 0) {
 146             proto_item_set_text(ti, "Device Name: %s", tvb_format_text(tvb, offset, length - 1));
 147             proto_tree_add_text(tree, tvb, offset, length, "Device Name: %s", tvb_format_text(tvb, offset, length - 1));
 148         } else {
 149             proto_item_set_text(ti, "Device Name: Bad length %u", length);
 150             proto_tree_add_text(tree, tvb, offset, length, "Device Name: Bad length %u", length);
 151         }
 152         break;
 153
 154     case HPFOO_DEVICE_VERSION:
 155         if (length > 0) {
 156             proto_item_set_text(ti, "Version: %s", tvb_format_text(tvb, offset, length - 1));
 157             proto_tree_add_text(tree, tvb, offset, length, "Version: %s", tvb_format_text(tvb, offset, length - 1));
 158         } else {
 159             proto_item_set_text(ti, "Version: Bad length %u", length);
 160             proto_tree_add_text(tree, tvb, offset, length, "Version: Bad length %u", length);
 161         }
 162         break;
 163
 164     case HPFOO_CONFIG_NAME:
 165         if (length > 0) {
 166             proto_item_set_text(ti, "Config: %s", tvb_format_text(tvb, offset, length - 1));
 167             proto_tree_add_text(tree, tvb, offset, length, "Config: %s", tvb_format_text(tvb, offset, length - 1));
 168         } else {
 169             proto_item_set_text(ti, "Config: Bad length %u", length);
 170             proto_tree_add_text(tree, tvb, offset, length, "Config: Bad length %u", length);
 171         }
 172         break;
 173
 174     case HPFOO_IP_ADDR:
 175         if (length == 4) {
 176             const guint8 *ipptr=tvb_get_ptr(tvb,offset,length);
 177             proto_item_set_text(ti, "IP Addr: %s", ip_to_str(ipptr));
 178             proto_tree_add_text(tree, tvb, offset, length, "IP Addr: %s", ip_to_str(ipptr));
 179         } else {
 180             proto_item_set_text(ti, "IP Addr: Bad length %u", length);
 181             proto_tree_add_text(tree, tvb, offset, length, "IP Addr: Bad length %u", length);
 182         }
 183         break;
 184
 185     case HPFOO_FIELD_7:
 186         if (length == 1) {
 187             proto_item_set_text(ti, "Field 7: 0x%02x", tvb_get_guint8(tvb,offset));
 188             proto_tree_add_text(tree, tvb, offset, length, "Field 7: 0x%02x", tvb_get_guint8(tvb,offset));
 189         } else {
 190             proto_item_set_text(ti, "Field 7: Bad length %u", length);
 191             proto_tree_add_text(tree, tvb, offset, length, "Field 7: Bad length %u", length);
 192         }
 193         break;
 194
 195     case HPFOO_FIELD_8:
 196         if (length == 2) {
 197             proto_item_set_text(ti, "Field 8: 0x%02x", tvb_get_ntohs(tvb,offset));
 198             proto_tree_add_text(tree, tvb, offset, length, "Field 8: 0x%02x", tvb_get_ntohs(tvb,offset));
 199         } else {
 200             proto_item_set_text(ti, "Field 8: Bad length %u", length);
 201             proto_tree_add_text(tree, tvb, offset, length, "Field 8: Bad length %u", length);
 202         }
 203         break;
 204
 205     case HPFOO_FIELD_9:
 206         if (length == 2) {
 207             proto_item_set_text(ti, "Field 9: 0x%02x", tvb_get_ntohs(tvb,offset));
 208             proto_tree_add_text(tree, tvb, offset, length, "Field 9: 0x%02x", tvb_get_ntohs(tvb,offset));
 209         } else {
 210             proto_item_set_text(ti, "Field 9: Bad length %u", length);
 211             proto_tree_add_text(tree, tvb, offset, length, "Field 9: Bad length %u", length);
 212         }
 213         break;
 214
 215     case HPFOO_FIELD_10:
 216         if (length == 4) {
 217             proto_item_set_text(ti, "Field 10: 0x%04x", tvb_get_ntohl(tvb,offset));
 218             proto_tree_add_text(tree, tvb, offset, length, "Field 9: 0x%04x", tvb_get_ntohl(tvb,offset));
 219         } else {
 220             proto_item_set_text(ti, "Field 10: Bad length %u", length);
 221             proto_tree_add_text(tree, tvb, offset, length, "Field 10: Bad length %u", length);
 222         }
 223         break;
 224
 225     case HPFOO_MAC_ADDR:
 226         if (length == 6) {
 227             const guint8 *macptr=tvb_get_ptr(tvb,offset,length);
 228             proto_item_set_text(ti, "MAC Addr: %s", ether_to_str(macptr));
 229             proto_tree_add_text(tree, tvb, offset, length, "MAC Addr: %s", ether_to_str(macptr));
 230         } else {
 231             proto_item_set_text(ti, "MAC Addr: Bad length %u", length);
 232             proto_tree_add_text(tree, tvb, offset, length, "MAC Addr: Bad length %u", length);
 233         }
 234         break;
 235
 236     default:
 237         proto_tree_add_text(tree, tvb, offset, length, "Data");
 238         break;
 239     }
 240 }
 241
 242
 243
 244
 245 void
 246 proto_register_hpsw(void)
 247 {
 248         static hf_register_info hf[] = {
 249                 { &hf_hpsw_version,
 250                 { "Version", "hpsw.version", FT_UINT8, BASE_HEX,
 251                         NULL, 0x0, "", HFILL }},
 252                 { &hf_hpsw_type,
 253                 { "Type", "hpsw.type", FT_UINT8, BASE_HEX,
 254                         NULL, 0x0, "", HFILL }},
 255                 { &hf_hpsw_tlvtype,
 256                 { "Type", "hpsw.tlv_type", FT_UINT8, BASE_HEX,
 257                         VALS(hpsw_tlv_type_vals), 0x0, "", HFILL }},
 258                 { &hf_hpsw_tlvlength,
 259                 { "Length", "hpsw.tlv_len", FT_UINT8, BASE_DEC,
 260                         NULL, 0x0, "", HFILL }},
 261         };
 262
 263         static gint *ett[] = {
 264                 &ett_hpsw,
 265                 &ett_hpsw_tlv,
 266         };
 267
 268         proto_hpsw = proto_register_protocol( "HP Switch Protocol", "HPSW", "hpsw");
 269         proto_register_field_array(proto_hpsw, hf, array_length(hf));
 270         proto_register_subtree_array(ett, array_length(ett));
 271
 272         register_dissector("hpsw", dissect_hpsw, proto_hpsw);
 273 }
 274
 275 void
 276 proto_reg_handoff_hpsw(void)
 277 {
 278         dissector_handle_t hpsw_handle;
 279
 280         hpsw_handle = find_dissector("hpsw");
 281
 282         dissector_add("hpext.dxsap", 0x0623, hpsw_handle);
 283 }