From Steve Karg:
Added MS/TP decoding for the WTAP BACnet MS/TP datalink, and added decoding for BACnet MS/TP datalink from a Cimetrics U+4 which spews SNAP protocol packets. svn path=/trunk/; revision=25291
This commit is contained in:
Jaap Keuter
parent
44af6ef887
commit
23df06b7a6
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@ -249,6 +249,7 @@ CLEAN_DISSECTOR_SRC = \
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packet-chdlc.c \
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packet-cigi.c \
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packet-cimd.c \
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packet-cimetrics.c \
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packet-cip.c \
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packet-cisco-erspan.c \
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packet-cisco-oui.c \
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@ -557,6 +558,7 @@ CLEAN_DISSECTOR_SRC = \
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packet-msnip.c \
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packet-msproxy.c \
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packet-msrp.c \
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packet-mstp.c \
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packet-mtp2.c \
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packet-mtp3.c \
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packet-mtp3mg.c \
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@ -972,6 +974,7 @@ DISSECTOR_INCLUDES = \
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packet-mrdisc.h \
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packet-msnip.h \
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packet-msrp.h \
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packet-mstp.h \
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packet-mtp3.h \
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packet-nbap.h \
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packet-ncp-int.h \
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@ -0,0 +1,117 @@
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/* 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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* $Id$
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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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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/* 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 dissector_handle_t bacnet_handle;
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static dissector_handle_t data_handle;
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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 void
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dissect_cimetrics_mstp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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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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ti = proto_tree_add_item(tree, proto_cimetrics_mstp, tvb, offset, 9, FALSE);
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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, TRUE);
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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, TRUE);
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dissect_mstp(tvb, pinfo, tree, subtree, offset);
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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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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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register_dissector("cimetrics", dissect_cimetrics_mstp,
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proto_cimetrics_mstp);
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llc_add_oui(OUI_CIMETRICS, "llc.cimetrics_pid",
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"Cimetrics OUI PID", &hf2);
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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_handle_t mstp_handle;
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mstp_handle = find_dissector("cimetrics");
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dissector_add("llc.cimetrics_pid", 1, mstp_handle);
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bacnet_handle = find_dissector("bacnet");
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data_handle = find_dissector("data");
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}
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@ -193,6 +193,7 @@ http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/113ed_cr/ibm_r
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{ OUI_PROFINET, "PROFIBUS Nutzerorganisation e.V." },
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{ OUI_SONY_ERICSSON_3, "Sony Ericsson Mobile Communications AB" },
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{ OUI_CATENA, "Catena Networks" },
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{ OUI_CIMETRICS, "Cimetrics" },
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{ OUI_IEEE_802_3, "IEEE 802.3" },
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{ OUI_MEDIA_ENDPOINT, "Media (TIA TR-41 Committee)" },
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{ OUI_SONY_ERICSSON_4, "Sony Ericsson Mobile Communications AB" },
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@ -0,0 +1,324 @@
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/* packet-mstp.c
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* Routines for BACnet MS/TP datalink dissection
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* Copyright 2008 Steve Karg <skarg@users.sourceforge.net> Alabama
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*
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* $Id$
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/oui.h>
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#include <epan/llcsaps.h>
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#include "packet-llc.h"
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#include "packet-mstp.h"
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/* MS/TP Frame Type */
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/* Frame Types 8 through 127 are reserved by ASHRAE. */
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#define MSTP_TOKEN 0
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#define MSTP_POLL_FOR_MASTER 1
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#define MSTP_REPLY_TO_POLL_FOR_MASTER 2
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#define MSTP_TEST_REQUEST 3
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#define MSTP_TEST_RESPONSE 4
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#define MSTP_BACNET_DATA_EXPECTING_REPLY 5
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#define MSTP_BACNET_DATA_NOT_EXPECTING_REPLY 6
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#define MSTP_REPLY_POSTPONED 7
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static const value_string
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bacnet_mstp_frame_type_name[] = {
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{MSTP_TOKEN, "Token"},
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{MSTP_POLL_FOR_MASTER, "Poll For Master"},
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{MSTP_REPLY_TO_POLL_FOR_MASTER, "Reply To Poll For Master"},
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{MSTP_TEST_REQUEST, "Test_Request"},
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{MSTP_TEST_RESPONSE, "Test_Response"},
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{MSTP_BACNET_DATA_EXPECTING_REPLY, "BACnet Data Expecting Reply"},
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{MSTP_BACNET_DATA_NOT_EXPECTING_REPLY, "BACnet Data Not Expecting Reply"},
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{MSTP_REPLY_POSTPONED, "Reply Postponed"},
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/* Frame Types 128 through 255: Proprietary Frames */
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{0, NULL }
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};
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static dissector_handle_t bacnet_handle;
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static dissector_handle_t data_handle;
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static int proto_mstp = -1;
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static gint ett_bacnet_mstp = -1;
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static int hf_mstp_preamble_55 = -1;
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static int hf_mstp_preamble_FF = -1;
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static int hf_mstp_frame_type = -1;
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static int hf_mstp_frame_destination = -1;
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static int hf_mstp_frame_source = -1;
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static int hf_mstp_frame_pdu_len = -1;
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static int hf_mstp_frame_crc8 = -1;
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static int hf_mstp_frame_crc16 = -1;
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#if defined(BACNET_MSTP_CHECKSUM_VALIDATE)
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/* Accumulate "dataValue" into the CRC in crcValue. */
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/* Return value is updated CRC */
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/* The ^ operator means exclusive OR. */
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/* Note: This function is copied directly from the BACnet standard. */
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static guint8 CRC_Calc_Header(
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guint8 dataValue,
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guint8 crcValue)
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{
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guint16 crc;
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crc = crcValue ^ dataValue; /* XOR C7..C0 with D7..D0 */
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/* Exclusive OR the terms in the table (top down) */
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crc = crc ^ (crc << 1) ^ (crc << 2) ^ (crc << 3)
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^ (crc << 4) ^ (crc << 5) ^ (crc << 6)
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^ (crc << 7);
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/* Combine bits shifted out left hand end */
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return (crc & 0xfe) ^ ((crc >> 8) & 1);
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}
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#endif
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#if defined(BACNET_MSTP_CHECKSUM_VALIDATE)
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/* Accumulate "dataValue" into the CRC in crcValue. */
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/* Return value is updated CRC */
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/* The ^ operator means exclusive OR. */
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/* Note: This function is copied directly from the BACnet standard. */
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static guint16 CRC_Calc_Data(
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guint8 dataValue,
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guint16 crcValue)
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{
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guint16 crcLow;
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crcLow = (crcValue & 0xff) ^ dataValue; /* XOR C7..C0 with D7..D0 */
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/* Exclusive OR the terms in the table (top down) */
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return (crcValue >> 8) ^ (crcLow << 8) ^ (crcLow << 3)
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^ (crcLow << 12) ^ (crcLow >> 4)
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^ (crcLow & 0x0f) ^ ((crcLow & 0x0f) << 7);
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}
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#endif
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/* dissects a BACnet MS/TP frame */
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/* preamble 0x55 0xFF is not included in Cimetrics U+4 output */
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void
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dissect_mstp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
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proto_tree *subtree, gint offset)
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{
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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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guint16 mstp_frame_pdu_len = 0;
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guint16 mstp_tvb_pdu_len = 0;
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tvbuff_t *next_tvb = NULL;
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#if defined(BACNET_MSTP_CHECKSUM_VALIDATE)
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/* used to calculate the crc value */
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guint8 crc8 = 0xFF, framecrc8;
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guint16 crc16 = 0xFFFF, framecrc16;
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guint8 crcdata, i;
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guint16 max_len = 0;
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#endif
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if (check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "BACnet");
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_set_str(pinfo->cinfo, COL_INFO, "BACnet MS/TP");
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}
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mstp_frame_type = tvb_get_guint8(tvb, offset);
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mstp_frame_destination = tvb_get_guint8(tvb, offset+1);
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mstp_frame_source = tvb_get_guint8(tvb, offset+2);
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mstp_frame_pdu_len = tvb_get_ntohs(tvb, offset+3);
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_append_fstr(pinfo->cinfo, COL_INFO, " [%02x>%02x] %s",
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mstp_frame_source,
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mstp_frame_destination,
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val_to_str(mstp_frame_type,
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bacnet_mstp_frame_type_name,
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"Unknown Frame Type"));
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}
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proto_tree_add_item(subtree, hf_mstp_frame_type, tvb,
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offset, 1, TRUE);
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proto_tree_add_item(subtree, hf_mstp_frame_destination, tvb,
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offset+1, 1, TRUE);
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proto_tree_add_item(subtree, hf_mstp_frame_source, tvb,
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offset+2, 1, TRUE);
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proto_tree_add_item(subtree, hf_mstp_frame_pdu_len, tvb,
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offset+3, 2, TRUE);
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#if defined(BACNET_MSTP_CHECKSUM_VALIDATE)
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/* calculate checksum to validate */
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for (i = 0; i < 5; i++) {
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crcdata = tvb_get_guint8(tvb, offset+i);
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crc8 = CRC_Calc_Header(crcdata, crc8);
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}
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crc8 = ~crc8;
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framecrc8 = tvb_get_guint8(tvb, offset+5);
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if (framecrc8 == crc8) {
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proto_tree_add_uint_format(subtree, hf_mstp_frame_crc8,
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tvb, offset+5, 1, framecrc8,
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"Header CRC: 0x%02x [correct]", framecrc8);
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} else {
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proto_tree_add_uint_format(subtree, hf_mstp_frame_crc8,
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tvb, offset+5, 1, framecrc8,
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"Header CRC: 0x%02x [incorrect, should be %02x]",
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framecrc8, crc8);
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}
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#else
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proto_tree_add_item(subtree, hf_mstp_frame_crc8,
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tvb, offset+5, 1, TRUE);
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#endif
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/* dissect BACnet PDU if there is one */
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offset += 6;
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mstp_tvb_pdu_len = tvb_length_remaining(tvb, offset);
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if (mstp_tvb_pdu_len > 2) {
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/* remove the 16-bit crc checksum bytes */
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mstp_tvb_pdu_len -= 2;
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next_tvb = tvb_new_subset(tvb, offset,
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mstp_tvb_pdu_len, mstp_frame_pdu_len);
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if ((mstp_frame_type == MSTP_BACNET_DATA_EXPECTING_REPLY) ||
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(mstp_frame_type == MSTP_BACNET_DATA_NOT_EXPECTING_REPLY)) {
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/* NPDU - call the BACnet NPDU dissector */
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call_dissector(bacnet_handle, next_tvb, pinfo, tree);
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} else {
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/* Unknown function - dissect the payload as data */
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call_dissector(data_handle, next_tvb, pinfo, tree);
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}
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#if defined(BACNET_MSTP_CHECKSUM_VALIDATE)
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/* 16-bit checksum - calculate to validate */
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max_len = min(mstp_frame_pdu_len, mstp_tvb_pdu_len);
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for (i = 0; i < max_len; i++) {
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crcdata = tvb_get_guint8(tvb, offset+i);
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crc16 = CRC_Calc_Data(crcdata, crc16);
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}
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crc16 = ~crc16;
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/* convert it to on-the-wire format */
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crc16 = g_htons(crc16);
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/* get the actual CRC from the frame */
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framecrc16 = tvb_get_ntohs(tvb, offset+mstp_frame_pdu_len);
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if (framecrc16 == crc16) {
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proto_tree_add_uint_format(subtree, hf_mstp_frame_crc16,
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tvb, offset+mstp_frame_pdu_len, 2, framecrc16,
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"Data CRC: 0x%04x [correct]", framecrc16);
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} else {
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proto_tree_add_uint_format(subtree, hf_mstp_frame_crc16,
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tvb, offset+mstp_frame_pdu_len, 2, framecrc16,
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"Data CRC: 0x%04x [incorrect, should be %04x]",
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framecrc16, crc16);
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}
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#else
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proto_tree_add_item(subtree, hf_mstp_frame_crc16,
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tvb, offset+mstp_frame_pdu_len, 2, TRUE);
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#endif
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}
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}
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static void
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dissect_mstp_wtap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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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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ti = proto_tree_add_item(tree, proto_mstp, tvb, offset, 8, FALSE);
|
||||
subtree = proto_item_add_subtree(ti, ett_bacnet_mstp);
|
||||
proto_tree_add_item(subtree, hf_mstp_preamble_55, tvb,
|
||||
offset, 1, TRUE);
|
||||
proto_tree_add_item(subtree, hf_mstp_preamble_FF, tvb,
|
||||
offset+1, 1, TRUE);
|
||||
dissect_mstp(tvb, pinfo, tree, subtree, offset+2);
|
||||
}
|
||||
|
||||
void
|
||||
proto_register_mstp(void)
|
||||
{
|
||||
static hf_register_info hf[] = {
|
||||
{ &hf_mstp_preamble_55,
|
||||
{ "Preamble 55", "mstp.preamble_55",
|
||||
FT_UINT8, BASE_HEX, NULL, 0,
|
||||
"MS/TP Preamble 55", HFILL }
|
||||
},
|
||||
{ &hf_mstp_preamble_FF,
|
||||
{ "Preamble FF", "mstp.preamble_FF",
|
||||
FT_UINT8, BASE_HEX, NULL, 0,
|
||||
"MS/TP Preamble FF", HFILL }
|
||||
},
|
||||
{ &hf_mstp_frame_type,
|
||||
{ "Frame Type", "mstp.frame_type",
|
||||
FT_UINT8, BASE_DEC, VALS(bacnet_mstp_frame_type_name), 0,
|
||||
"MS/TP Frame Type", HFILL }
|
||||
},
|
||||
{ &hf_mstp_frame_destination,
|
||||
{ "Destination Address", "mstp.destination",
|
||||
FT_UINT8, BASE_DEC, NULL, 0,
|
||||
"Destination MS/TP MAC Address", HFILL }
|
||||
},
|
||||
{ &hf_mstp_frame_source,
|
||||
{ "Source Address", "mstp.source",
|
||||
FT_UINT8, BASE_DEC, NULL, 0,
|
||||
"Source MS/TP MAC Address", HFILL }
|
||||
},
|
||||
{ &hf_mstp_frame_pdu_len,
|
||||
{ "Length", "mstp.length",
|
||||
FT_UINT16, BASE_DEC, NULL, 0,
|
||||
"MS/TP Frame Data Length", HFILL }
|
||||
},
|
||||
{ &hf_mstp_frame_crc8,
|
||||
{ "Header CRC", "mstp.header_crc",
|
||||
FT_UINT8, BASE_HEX, NULL, 0,
|
||||
"MS/TP Header CRC", HFILL }
|
||||
},
|
||||
{ &hf_mstp_frame_crc16,
|
||||
{ "Data CRC", "mstp.data_crc",
|
||||
FT_UINT16, BASE_HEX, NULL, 0,
|
||||
"MS/TP Data CRC", HFILL }
|
||||
}
|
||||
};
|
||||
|
||||
static gint *ett[] = {
|
||||
&ett_bacnet_mstp
|
||||
};
|
||||
|
||||
proto_mstp = proto_register_protocol("BACnet MS/TP",
|
||||
"BACnet MS/TP", "mstp");
|
||||
|
||||
proto_register_field_array(proto_mstp, hf, array_length(hf));
|
||||
proto_register_subtree_array(ett, array_length(ett));
|
||||
|
||||
register_dissector("mstp", dissect_mstp_wtap, proto_mstp);
|
||||
}
|
||||
|
||||
void
|
||||
proto_reg_handoff_mstp(void)
|
||||
{
|
||||
dissector_handle_t mstp_handle;
|
||||
|
||||
mstp_handle = find_dissector("mstp");
|
||||
dissector_add("wtap_encap", WTAP_ENCAP_BACNET_MS_TP, mstp_handle);
|
||||
bacnet_handle = find_dissector("bacnet");
|
||||
data_handle = find_dissector("data");
|
||||
}
|
||||
|
|
@ -0,0 +1,64 @@
|
|||
/* packet-mstp.h
|
||||
* Routines for BACnet MS/TP datalink dissection
|
||||
* Copyright 2008 Steve Karg <skarg@users.sourceforge.net> Alabama
|
||||
*
|
||||
* $Id$
|
||||
*
|
||||
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef __MSTP_H__
|
||||
#define __MSTP_H__
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
# include "config.h"
|
||||
#if HAVE_ICONV
|
||||
#include <iconv.h>
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <glib.h>
|
||||
|
||||
#include <epan/packet.h>
|
||||
|
||||
#ifndef min
|
||||
#define min(a,b) (((a)<(b))?(a):(b))
|
||||
#endif
|
||||
|
||||
/**
|
||||
* Dissects the BACnet MS/TP packet after the preamble,
|
||||
* starting with the MS/TP Frame type octet. Passes
|
||||
* the PDU, if there is one, to the BACnet dissector.
|
||||
* @param tvb
|
||||
* @param pinfo
|
||||
* @param tree
|
||||
* @param subtree
|
||||
* @param offset
|
||||
* @return none
|
||||
*/
|
||||
void
|
||||
dissect_mstp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *subtree, gint offset);
|
||||
|
||||
#endif /* __MSTP_H__ */
|
||||
|
||||
|
||||
|
|
@ -46,6 +46,7 @@
|
|||
#define OUI_SONY_ERICSSON_2 0x000E07 /* Sony Ericsson Mobile Communications AB */
|
||||
#define OUI_PROFINET 0x000ECF /* PROFIBUS Nutzerorganisation e.V. */
|
||||
#define OUI_SONY_ERICSSON_3 0x000FDE /* Sony Ericsson Mobile Communications AB */
|
||||
#define OUI_CIMETRICS 0x001090 /* Cimetrics, Inc. */
|
||||
#define OUI_IEEE_802_3 0x00120F /* IEEE 802.3 */
|
||||
#define OUI_MEDIA_ENDPOINT 0x0012BB /* Media (TIA TR-41 Committee) */
|
||||
#define OUI_SONY_ERICSSON_4 0x0012EE /* Sony Ericsson Mobile Communications AB */
|
||||
|
|
|
|||
Loading…
Reference in New Issue