forked from osmocom/wireshark
9be273b75b
LeCroy instruments use the VICP protocol to carry GPIB messages over Ethernet. svn path=/trunk/; revision=26337
127 lines
3.7 KiB
C
127 lines
3.7 KiB
C
/* packet-vicp.c
|
|
* LeCroy VICP (GPIB-over-Ethernet-but-lets-not-do-LXI) dissector
|
|
*
|
|
* Written by Frank Kingswood <frank.kingswood@artimi.com>
|
|
* Copyright 2008, Artimi Ltd.
|
|
*
|
|
* $Id$
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <epan/packet.h>
|
|
#include <epan/emem.h>
|
|
#include <epan/ptvcursor.h>
|
|
|
|
/* registration object IDs */
|
|
static int proto_vicp = -1;
|
|
static int hf_vicp_operation = -1;
|
|
static int hf_vicp_version = -1;
|
|
static int hf_vicp_sequence = -1;
|
|
static int hf_vicp_unused = -1;
|
|
static int hf_vicp_length = -1;
|
|
static int hf_vicp_data = -1;
|
|
static gint ett_vicp = -1;
|
|
|
|
#define VICP_PORT 1861
|
|
|
|
static void dissect_vicp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *vicp_tree;
|
|
ptvcursor_t* cursor;
|
|
|
|
unsigned len;
|
|
|
|
if (tvb_reported_length_remaining(tvb, 0) < 8)
|
|
{
|
|
/* Payload too small for VICP */
|
|
return;
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "VICP");
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
ti = proto_tree_add_item(tree, proto_vicp, tvb, 0, -1, FALSE);
|
|
vicp_tree = proto_item_add_subtree(ti, ett_vicp);
|
|
cursor = ptvcursor_new(vicp_tree, tvb, 0);
|
|
|
|
ptvcursor_add(cursor, hf_vicp_operation, 1, FALSE);
|
|
ptvcursor_add(cursor, hf_vicp_version, 1, FALSE);
|
|
ptvcursor_add(cursor, hf_vicp_sequence, 1, FALSE);
|
|
ptvcursor_add(cursor, hf_vicp_unused, 1, FALSE);
|
|
|
|
len=tvb_get_ntohl(tvb, ptvcursor_current_offset(cursor));
|
|
ptvcursor_add(cursor, hf_vicp_length, 4, FALSE);
|
|
|
|
if(len==0)
|
|
proto_tree_add_text(vicp_tree, tvb, 0, 0, "No data");
|
|
else
|
|
ptvcursor_add(cursor, hf_vicp_data, len, FALSE);
|
|
|
|
ptvcursor_free(cursor);
|
|
}
|
|
|
|
void proto_register_vicp(void)
|
|
{
|
|
static hf_register_info hf[] =
|
|
{
|
|
{ &hf_vicp_operation,
|
|
{ "Operation","vicp.operation",FT_UINT8,BASE_HEX,NULL,0x0,NULL,HFILL }
|
|
},
|
|
{ &hf_vicp_version,
|
|
{ "Protocol version","vicp.version",FT_UINT8,BASE_DEC,NULL,0x0,NULL,HFILL }
|
|
},
|
|
{ &hf_vicp_sequence,
|
|
{ "Sequence number","vicp.sequence",FT_UINT8,BASE_DEC,NULL,0x0,NULL,HFILL }
|
|
},
|
|
{ &hf_vicp_unused,
|
|
{ "Unused","vicp.unused",FT_UINT8,BASE_HEX,NULL,0x0,NULL,HFILL }
|
|
},
|
|
{ &hf_vicp_length,
|
|
{ "Data length","vicp.length",FT_UINT32,BASE_DEC,NULL,0x0,NULL,HFILL }
|
|
},
|
|
{ &hf_vicp_data,
|
|
{ "Data","vicp.data",FT_BYTES,BASE_NONE,NULL,0x0,NULL,HFILL }
|
|
}
|
|
};
|
|
|
|
static gint *ett[] =
|
|
{ &ett_vicp
|
|
};
|
|
|
|
proto_vicp = proto_register_protocol("LeCroy VICP", "VICP", "vicp");
|
|
proto_register_field_array(proto_vicp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void proto_reg_handoff_vicp(void)
|
|
{ dissector_handle_t vicp_handle;
|
|
|
|
vicp_handle = create_dissector_handle(dissect_vicp, proto_vicp);
|
|
dissector_add("tcp.port", VICP_PORT, vicp_handle);
|
|
}
|