134 lines
3.9 KiB
C
134 lines
3.9 KiB
C
/* packet-vicp.c
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* LeCroy VICP (GPIB-over-Ethernet-but-lets-not-do-LXI) dissector
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*
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* Written by Frank Kingswood <frank.kingswood@artimi.com>
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* Copyright 2008, Artimi Ltd.
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/ptvcursor.h>
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/* registration object IDs */
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static int proto_vicp = -1;
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static int hf_vicp_operation = -1;
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static int hf_vicp_version = -1;
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static int hf_vicp_sequence = -1;
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static int hf_vicp_unused = -1;
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static int hf_vicp_length = -1;
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static int hf_vicp_data = -1;
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static gint ett_vicp = -1;
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#define VICP_PORT 1861
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void proto_register_vicp(void);
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void proto_reg_handoff_vicp(void);
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static int dissect_vicp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_item *ti;
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proto_tree *vicp_tree;
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ptvcursor_t* cursor;
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guint len;
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if (tvb_reported_length_remaining(tvb, 0) < 8)
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{
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/* Payload too small for VICP */
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return 0;
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}
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "VICP");
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col_clear(pinfo->cinfo, COL_INFO);
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ti = proto_tree_add_item(tree, proto_vicp, tvb, 0, -1, ENC_NA);
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vicp_tree = proto_item_add_subtree(ti, ett_vicp);
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cursor = ptvcursor_new(vicp_tree, tvb, 0);
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ptvcursor_add(cursor, hf_vicp_operation, 1, ENC_BIG_ENDIAN);
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ptvcursor_add(cursor, hf_vicp_version, 1, ENC_BIG_ENDIAN);
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ptvcursor_add(cursor, hf_vicp_sequence, 1, ENC_BIG_ENDIAN);
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ptvcursor_add(cursor, hf_vicp_unused, 1, ENC_BIG_ENDIAN);
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len=tvb_get_ntohl(tvb, ptvcursor_current_offset(cursor));
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ptvcursor_add(cursor, hf_vicp_length, 4, ENC_BIG_ENDIAN);
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ptvcursor_add(cursor, hf_vicp_data, len, ENC_NA);
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ptvcursor_free(cursor);
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return tvb_captured_length(tvb);
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}
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void proto_register_vicp(void)
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{
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static hf_register_info hf[] =
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{
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{ &hf_vicp_operation,
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{ "Operation","vicp.operation",FT_UINT8,BASE_HEX,NULL,0x0,NULL,HFILL }
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},
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{ &hf_vicp_version,
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{ "Protocol version","vicp.version",FT_UINT8,BASE_DEC,NULL,0x0,NULL,HFILL }
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},
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{ &hf_vicp_sequence,
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{ "Sequence number","vicp.sequence",FT_UINT8,BASE_DEC,NULL,0x0,NULL,HFILL }
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},
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{ &hf_vicp_unused,
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{ "Unused","vicp.unused",FT_UINT8,BASE_HEX,NULL,0x0,NULL,HFILL }
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},
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{ &hf_vicp_length,
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{ "Data length","vicp.length",FT_UINT32,BASE_DEC,NULL,0x0,NULL,HFILL }
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},
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{ &hf_vicp_data,
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{ "Data","vicp.data",FT_BYTES,BASE_NONE,NULL,0x0,NULL,HFILL }
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}
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};
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static gint *ett[] =
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{ &ett_vicp
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};
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proto_vicp = proto_register_protocol("LeCroy VICP", "VICP", "vicp");
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proto_register_field_array(proto_vicp, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void proto_reg_handoff_vicp(void)
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{ dissector_handle_t vicp_handle;
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vicp_handle = create_dissector_handle(dissect_vicp, proto_vicp);
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dissector_add_uint_with_preference("tcp.port", VICP_PORT, vicp_handle);
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local Variables:
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* c-basic-offset: 3
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=3 tabstop=8 expandtab:
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* :indentSize=3:tabSize=8:noTabs=true:
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*/
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