142 lines
4.1 KiB
C
142 lines
4.1 KiB
C
/* packet-cimetrics.c
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* Routines for Cimetrics LLC OUI dissection
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* Copyright 2008 Steve Karg <skarg@users.sourceforge.net> Alabama
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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 "packet-llc.h"
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#include <epan/oui.h>
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#include "packet-mstp.h"
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void proto_register_cimetrics(void);
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void proto_reg_handoff_cimetrics(void);
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/* Probably should be a preference, but here for now */
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#define BACNET_MSTP_SUMMARY_IN_TREE
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/* the U+4 device does MS/TP, uLAN, Modbus */
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static const value_string cimetrics_pid_vals[] = {
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{ 0x0001, "U+4 MS/TP" },
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{ 0, NULL }
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};
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static int proto_cimetrics_mstp = -1;
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static int hf_llc_cimetrics_pid = -1;
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static gint ett_cimetrics_mstp = -1;
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static int hf_cimetrics_mstp_timer = -1;
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static int hf_cimetrics_mstp_value = -1;
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static dissector_handle_t cimetric_handle;
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static int
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dissect_cimetrics_mstp(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 *subtree;
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gint offset = 0;
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#ifdef BACNET_MSTP_SUMMARY_IN_TREE
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guint8 mstp_frame_type = 0;
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guint8 mstp_frame_source = 0;
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guint8 mstp_frame_destination = 0;
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#endif
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#ifdef BACNET_MSTP_SUMMARY_IN_TREE
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mstp_frame_type = tvb_get_guint8(tvb, offset+3);
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mstp_frame_destination = tvb_get_guint8(tvb, offset+4);
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mstp_frame_source = tvb_get_guint8(tvb, offset+5);
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ti = proto_tree_add_protocol_format(tree,
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proto_cimetrics_mstp, tvb, offset, 9,
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"BACnet MS/TP, Src (%u), Dst (%u), %s",
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mstp_frame_source, mstp_frame_destination,
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mstp_frame_type_text(mstp_frame_type));
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#else
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ti = proto_tree_add_item(tree, proto_cimetrics_mstp, tvb, offset, 9, ENC_NA);
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#endif
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subtree = proto_item_add_subtree(ti, ett_cimetrics_mstp);
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proto_tree_add_item(subtree, hf_cimetrics_mstp_timer, tvb,
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offset++, 2, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(subtree, hf_cimetrics_mstp_value, tvb,
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offset++, 1, ENC_LITTLE_ENDIAN);
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dissect_mstp(tvb, pinfo, tree, subtree, offset);
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return tvb_captured_length(tvb);
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}
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void
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proto_register_cimetrics(void)
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{
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static hf_register_info hf[] = {
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{ &hf_cimetrics_mstp_timer,
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{ "Delta Time", "cimetrics.mstp_timer",
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FT_UINT16, BASE_DEC, NULL, 0,
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"Milliseconds", HFILL }
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},
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{ &hf_cimetrics_mstp_value,
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{ "8-bit value", "cimetrics.mstp_value",
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FT_UINT8, BASE_DEC, NULL, 0,
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"value", HFILL }
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}
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};
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static hf_register_info hf2[] = {
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{ &hf_llc_cimetrics_pid,
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{ "PID", "llc.cimetrics_pid",
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FT_UINT16, BASE_HEX, VALS(cimetrics_pid_vals), 0,
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NULL, HFILL }
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}
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};
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static gint *ett[] = {
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&ett_cimetrics_mstp
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};
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proto_cimetrics_mstp = proto_register_protocol("Cimetrics MS/TP",
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"Cimetrics MS/TP", "cimetrics");
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proto_register_field_array(proto_cimetrics_mstp, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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cimetric_handle = register_dissector("cimetrics", dissect_cimetrics_mstp, proto_cimetrics_mstp);
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llc_add_oui(OUI_CIMETRICS, "llc.cimetrics_pid",
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"LLC Cimetrics OUI PID", hf2, proto_cimetrics_mstp);
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}
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void
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proto_reg_handoff_cimetrics(void)
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{
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dissector_add_uint("llc.cimetrics_pid", 1, cimetric_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: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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