forked from osmocom/wireshark
123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
/* packet-bacapp.c
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* Routines for BACnet (APDU) dissection
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* Copyright 2001, Hartmut Mueller <hartmut@abmlinux.org>, FH Dortmund
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*
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* $Id: packet-bacapp.c,v 1.13 2002/08/28 21:00:07 jmayer Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* Copied from README.developer,v 1.23
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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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static const char*
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bacapp_type_name (guint8 bacapp_type){
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static const char *type_names[] = {
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"Confirmed-Request-PDU",
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"Unconfirmed-Request-PDU",
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"SimpleACK-PDU",
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"ComplexACK-PDU",
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"SegmentACK-PDU",
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"Error-PDU",
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"Reject-PDU",
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"Abort-PDU"
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};
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return (bacapp_type > 7)? "unknown PDU" : type_names[bacapp_type];
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}
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static int proto_bacapp = -1;
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static int hf_bacapp_type = -1;
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static gint ett_bacapp = -1;
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static dissector_handle_t data_handle;
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static void
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dissect_bacapp(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 *bacapp_tree;
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guint8 offset;
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guint8 bacapp_type;
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tvbuff_t *next_tvb;
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if (check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "BACnet-APDU");
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if (check_col(pinfo->cinfo, COL_INFO))
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col_add_str(pinfo->cinfo, COL_INFO, "BACnet APDU ");
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offset = 0;
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bacapp_type = (tvb_get_guint8(tvb, offset) >> 4) & 0x0f;
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if (check_col(pinfo->cinfo, COL_INFO))
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col_append_fstr(pinfo->cinfo, COL_INFO, "(%s)",
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bacapp_type_name(bacapp_type));
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if (tree) {
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ti = proto_tree_add_item(tree, proto_bacapp, tvb, offset, -1, FALSE);
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bacapp_tree = proto_item_add_subtree(ti, ett_bacapp);
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proto_tree_add_uint_format(bacapp_tree, hf_bacapp_type, tvb,
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offset, 1, bacapp_type, "APDU Type: %u (%s)", bacapp_type,
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bacapp_type_name(bacapp_type));
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offset ++;
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}
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next_tvb = tvb_new_subset(tvb,offset,-1,-1);
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call_dissector(data_handle,next_tvb, pinfo, tree);
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}
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void
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proto_register_bacapp(void)
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{
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static hf_register_info hf[] = {
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{ &hf_bacapp_type,
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{ "APDU Type", "bacapp.bacapp_type",
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FT_UINT8, BASE_DEC, NULL, 0xf0, "APDU Type", HFILL }
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},
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};
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static gint *ett[] = {
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&ett_bacapp,
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};
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proto_bacapp = proto_register_protocol("Building Automation and Control Network APDU",
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"BACapp", "bacapp");
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proto_register_field_array(proto_bacapp, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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register_dissector("bacapp", dissect_bacapp, proto_bacapp);
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}
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void
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proto_reg_handoff_bacapp(void)
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{
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data_handle = find_dissector("data");
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}
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