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/* 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.
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/ptvcursor.h>
/* registration object IDs */
static int proto_vicp;
static int hf_vicp_operation;
static int hf_vicp_version;
static int hf_vicp_sequence;
static int hf_vicp_unused;
static int hf_vicp_length;
static int hf_vicp_data;
static int ett_vicp;
#define VICP_PORT 1861
void proto_register_vicp(void);
void proto_reg_handoff_vicp(void);
static dissector_handle_t vicp_handle;
static int dissect_vicp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
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 0;
}
col_set_str(pinfo->cinfo, COL_PROTOCOL, "VICP");
col_clear(pinfo->cinfo, COL_INFO);
ti = proto_tree_add_item(tree, proto_vicp, tvb, 0, -1, ENC_NA);
vicp_tree = proto_item_add_subtree(ti, ett_vicp);
cursor = ptvcursor_new(pinfo->pool, vicp_tree, tvb, 0);
ptvcursor_add(cursor, hf_vicp_operation, 1, ENC_BIG_ENDIAN);
ptvcursor_add(cursor, hf_vicp_version, 1, ENC_BIG_ENDIAN);
ptvcursor_add(cursor, hf_vicp_sequence, 1, ENC_BIG_ENDIAN);
ptvcursor_add(cursor, hf_vicp_unused, 1, ENC_BIG_ENDIAN);
len=tvb_get_ntohl(tvb, ptvcursor_current_offset(cursor));
ptvcursor_add(cursor, hf_vicp_length, 4, ENC_BIG_ENDIAN);
ptvcursor_add(cursor, hf_vicp_data, len, ENC_NA);
ptvcursor_free(cursor);
return tvb_captured_length(tvb);
}
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 int *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));
vicp_handle = register_dissector("vicp", dissect_vicp, proto_vicp);
}
void proto_reg_handoff_vicp(void)
{
dissector_add_uint_with_preference("tcp.port", VICP_PORT, vicp_handle);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local Variables:
* c-basic-offset: 3
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=3 tabstop=8 expandtab:
* :indentSize=3:tabSize=8:noTabs=true:
*/
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