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wireshark/epan/dissectors/packet-hpsw.c

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/* packet-hpsw.c
* Routines for HP Switch Config protocol
* Charlie Lenahan <clenahan@fortresstech.com>
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <glib.h>
#include <epan/packet.h>
#include <epan/etypes.h>
#include "packet-hpext.h"
static void dissect_hpsw_tlv(tvbuff_t *tvb, int offset, int length,
proto_tree *tree, proto_item *ti, guint8 type);
static int proto_hpsw = -1;
static int hf_hpsw_version = -1;
static int hf_hpsw_type = -1;
static int hf_hpsw_tlvtype = -1;
static int hf_hpsw_tlvlength = -1;
static gint ett_hpsw = -1;
static gint ett_hpsw_tlv = -1;
#define HPFOO_DEVICE_NAME 0x1
#define HPFOO_DEVICE_VERSION 0x2
#define HPFOO_CONFIG_NAME 0x3
#define HPFOO_IP_ADDR 0x5
#define HPFOO_FIELD_7 0x7
#define HPFOO_FIELD_8 0x8
#define HPFOO_FIELD_9 0x9
#define HPFOO_FIELD_10 0xa
#define HPFOO_FIELD_12 0xc
#define HPFOO_DEVICE_ID 0xd /* Interpretation of this field is an educated guess */
#define HPFOO_MAC_ADDR 0xe
static const value_string hpsw_tlv_type_vals[] = {
{ HPFOO_DEVICE_NAME, "Device Name" },
{ HPFOO_DEVICE_VERSION, "Version" },
{ HPFOO_CONFIG_NAME, "Config" },
{ HPFOO_IP_ADDR, "IP Addr" },
{ HPFOO_FIELD_7, "Field 7" },
{ HPFOO_FIELD_8, "Field 8" },
{ HPFOO_FIELD_9, "Field 9" },
{ HPFOO_FIELD_10, "Field 10" },
{ HPFOO_FIELD_12, "Field 12" },
{ HPFOO_DEVICE_ID, "Device ID" },
{ HPFOO_MAC_ADDR, "MAC Addr" },
{ 0x00, NULL }
};
static void
dissect_hpsw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *hp_tree = NULL;
proto_tree *tlv_tree = NULL;
proto_item *ti = NULL;
guint8 version;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "HP");
col_set_str(pinfo->cinfo, COL_INFO, "HP Switch Protocol");
version = tvb_get_guint8(tvb, 0);
if (tree) {
guint16 offset =0;
ti = proto_tree_add_item(tree, proto_hpsw, tvb, 0, -1, ENC_NA);
hp_tree = proto_item_add_subtree(ti, ett_hpsw);
proto_tree_add_uint(hp_tree, hf_hpsw_version, tvb, 0, 1, version);
offset++;
proto_tree_add_item(hp_tree, hf_hpsw_type, tvb, 1, 1, ENC_BIG_ENDIAN);
offset++;
while ( tvb_reported_length_remaining(tvb, offset) > 0 )
{
guint8 type,length;
type = tvb_get_guint8(tvb, offset);
length = tvb_get_guint8(tvb, offset+1);
/* make sure still in valid tlv */
if (( length < 1 ) || ( length > tvb_length_remaining(tvb,offset+2)))
break;
ti = proto_tree_add_text(hp_tree,tvb,offset,length+2,"%s",
val_to_str(type,hpsw_tlv_type_vals,"Unknown TLV type: 0x%02x"));
tlv_tree=proto_item_add_subtree(ti,ett_hpsw_tlv);
/* type */
proto_tree_add_uint(tlv_tree, hf_hpsw_tlvtype, tvb, offset, 1, type);
offset++;
/* LENGTH (not inclusive of type and length bytes) */
proto_tree_add_uint(tlv_tree, hf_hpsw_tlvlength, tvb, offset, 1, length);
offset++;
dissect_hpsw_tlv(tvb,offset,length,tlv_tree,ti,type);
offset += length;
}
}
}
static void
dissect_hpsw_tlv(tvbuff_t *tvb, int offset, int length,
proto_tree *tree, proto_item *ti, guint8 type)
{
switch (type) {
case HPFOO_DEVICE_NAME:
if (length > 0) {
proto_item_set_text(ti, "Device Name: %s", tvb_format_text(tvb, offset, length - 1));
proto_tree_add_text(tree, tvb, offset, length, "Device Name: %s", tvb_format_text(tvb, offset, length - 1));
} else {
proto_item_set_text(ti, "Device Name: Bad length %u", length);
proto_tree_add_text(tree, tvb, offset, length, "Device Name: Bad length %u", length);
}
break;
case HPFOO_DEVICE_VERSION:
if (length > 0) {
proto_item_set_text(ti, "Version: %s", tvb_format_text(tvb, offset, length - 1));
proto_tree_add_text(tree, tvb, offset, length, "Version: %s", tvb_format_text(tvb, offset, length - 1));
} else {
proto_item_set_text(ti, "Version: Bad length %u", length);
proto_tree_add_text(tree, tvb, offset, length, "Version: Bad length %u", length);
}
break;
case HPFOO_CONFIG_NAME:
if (length > 0) {
proto_item_set_text(ti, "Config: %s", tvb_format_text(tvb, offset, length - 1));
proto_tree_add_text(tree, tvb, offset, length, "Config: %s", tvb_format_text(tvb, offset, length - 1));
} else {
proto_item_set_text(ti, "Config: Bad length %u", length);
proto_tree_add_text(tree, tvb, offset, length, "Config: Bad length %u", length);
}
break;
case HPFOO_IP_ADDR:
if (length == 4) {
const char *ipstr = tvb_ip_to_str(tvb, offset);
proto_item_set_text(ti, "IP Addr: %s", ipstr);
proto_tree_add_text(tree, tvb, offset, length, "IP Addr: %s", ipstr);
} else {
proto_item_set_text(ti, "IP Addr: Bad length %u", length);
proto_tree_add_text(tree, tvb, offset, length, "IP Addr: Bad length %u", length);
}
break;
case HPFOO_FIELD_7:
if (length == 1) {
proto_item_set_text(ti, "Field 7: 0x%02x", tvb_get_guint8(tvb,offset));
proto_tree_add_text(tree, tvb, offset, length, "Field 7: 0x%02x", tvb_get_guint8(tvb,offset));
} else {
proto_item_set_text(ti, "Field 7: Bad length %u", length);
proto_tree_add_text(tree, tvb, offset, length, "Field 7: Bad length %u", length);
}
break;
case HPFOO_FIELD_8:
if (length == 2) {
proto_item_set_text(ti, "Field 8: 0x%04x", tvb_get_ntohs(tvb,offset));
proto_tree_add_text(tree, tvb, offset, length, "Field 8: 0x%04x", tvb_get_ntohs(tvb,offset));
} else {
proto_item_set_text(ti, "Field 8: Bad length %u", length);
proto_tree_add_text(tree, tvb, offset, length, "Field 8: Bad length %u", length);
}
break;
case HPFOO_FIELD_9:
if (length == 2) {
proto_item_set_text(ti, "Field 9: 0x%04x", tvb_get_ntohs(tvb,offset));
proto_tree_add_text(tree, tvb, offset, length, "Field 9: 0x%04x", tvb_get_ntohs(tvb,offset));
} else {
proto_item_set_text(ti, "Field 9: Bad length %u", length);
proto_tree_add_text(tree, tvb, offset, length, "Field 9: Bad length %u", length);
}
break;
case HPFOO_FIELD_10:
if (length == 4) {
proto_item_set_text(ti, "Field 10: 0x%08x", tvb_get_ntohl(tvb,offset));
proto_tree_add_text(tree, tvb, offset, length, "Field 10: 0x%08x", tvb_get_ntohl(tvb,offset));
} else {
proto_item_set_text(ti, "Field 10: Bad length %u", length);
proto_tree_add_text(tree, tvb, offset, length, "Field 10: Bad length %u", length);
}
break;
case HPFOO_FIELD_12:
if (length == 1) {
proto_item_set_text(ti, "Field 12: 0x%02x", tvb_get_guint8(tvb,offset));
proto_tree_add_text(tree, tvb, offset, length, "Field 12: 0x%02x", tvb_get_guint8(tvb,offset));
} else {
proto_item_set_text(ti, "Field 12: Bad length %u", length);
proto_tree_add_text(tree, tvb, offset, length, "Field 12: Bad length %u", length);
}
break;
case HPFOO_DEVICE_ID:
if (length == 10) {
const gchar *macstr = tvb_ether_to_str(tvb, offset);
guint32 id=tvb_get_ntohl(tvb, offset+6);
proto_item_set_text(ti, "Device ID: %s / %u", macstr, id);
proto_tree_add_text(tree, tvb, offset, 10, "Device ID: %s / %u", macstr, id);
} else {
proto_item_set_text(ti, "Device ID: Bad length %u", length);
proto_tree_add_text(tree, tvb, offset, length, "Device ID: Bad length %u", length);
}
break;
case HPFOO_MAC_ADDR:
if (length == 6) {
const gchar *macstr = tvb_ether_to_str(tvb, offset);
proto_item_set_text(ti, "MAC Addr: %s", macstr);
proto_tree_add_text(tree, tvb, offset, length, "MAC Addr: %s", macstr);
} else {
proto_item_set_text(ti, "MAC Addr: Bad length %u", length);
proto_tree_add_text(tree, tvb, offset, length, "MAC Addr: Bad length %u", length);
}
break;
default:
proto_tree_add_text(tree, tvb, offset, length, "Data");
break;
}
}
void
proto_register_hpsw(void)
{
static hf_register_info hf[] = {
{ &hf_hpsw_version,
{ "Version", "hpsw.version", FT_UINT8, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_hpsw_type,
{ "Type", "hpsw.type", FT_UINT8, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_hpsw_tlvtype,
{ "Type", "hpsw.tlv_type", FT_UINT8, BASE_HEX,
VALS(hpsw_tlv_type_vals), 0x0, NULL, HFILL }},
{ &hf_hpsw_tlvlength,
{ "Length", "hpsw.tlv_len", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }}
};
static gint *ett[] = {
&ett_hpsw,
&ett_hpsw_tlv
};
proto_hpsw = proto_register_protocol( "HP Switch Protocol", "HPSW", "hpsw");
proto_register_field_array(proto_hpsw, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
register_dissector("hpsw", dissect_hpsw, proto_hpsw);
}
void
proto_reg_handoff_hpsw(void)
{
dissector_handle_t hpsw_handle;
hpsw_handle = find_dissector("hpsw");
dissector_add_uint("hpext.dxsap", HPEXT_HPSW, hpsw_handle);
}
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