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Diffstat (limited to 'epan/dissectors/packet-bacapp.c')
| -rw-r--r-- | epan/dissectors/packet-bacapp.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/epan/dissectors/packet-bacapp.c b/epan/dissectors/packet-bacapp.c new file mode 100644 index 0000000000..b89a5051c6 --- /dev/null +++ b/epan/dissectors/packet-bacapp.c @@ -0,0 +1,122 @@ +/* packet-bacapp.c + * Routines for BACnet (APDU) dissection + * Copyright 2001, Hartmut Mueller <hartmut@abmlinux.org>, FH Dortmund + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * Copyright 1998 Gerald Combs + * + * Copied from README.developer,v 1.23 + * + * 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. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <glib.h> + +#include <epan/packet.h> + +static const char* +bacapp_type_name (guint8 bacapp_type){ + static const char *type_names[] = { + "Confirmed-Request-PDU", + "Unconfirmed-Request-PDU", + "SimpleACK-PDU", + "ComplexACK-PDU", + "SegmentACK-PDU", + "Error-PDU", + "Reject-PDU", + "Abort-PDU" + }; + return (bacapp_type > 7)? "unknown PDU" : type_names[bacapp_type]; +} + +static int proto_bacapp = -1; +static int hf_bacapp_type = -1; + +static gint ett_bacapp = -1; + +static dissector_handle_t data_handle; + +static void +dissect_bacapp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_item *ti; + proto_tree *bacapp_tree; + guint8 offset; + guint8 bacapp_type; + tvbuff_t *next_tvb; + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "BACnet-APDU"); + if (check_col(pinfo->cinfo, COL_INFO)) + col_add_str(pinfo->cinfo, COL_INFO, "BACnet APDU "); + + offset = 0; + bacapp_type = (tvb_get_guint8(tvb, offset) >> 4) & 0x0f; + + if (check_col(pinfo->cinfo, COL_INFO)) + col_append_fstr(pinfo->cinfo, COL_INFO, "(%s)", + bacapp_type_name(bacapp_type)); + if (tree) { + ti = proto_tree_add_item(tree, proto_bacapp, tvb, offset, -1, FALSE); + + bacapp_tree = proto_item_add_subtree(ti, ett_bacapp); + + proto_tree_add_uint_format(bacapp_tree, hf_bacapp_type, tvb, + offset, 1, bacapp_type, "APDU Type: %u (%s)", bacapp_type, + bacapp_type_name(bacapp_type)); + offset ++; + + } + next_tvb = tvb_new_subset(tvb,offset,-1,-1); + call_dissector(data_handle,next_tvb, pinfo, tree); +} + + +void +proto_register_bacapp(void) +{ + static hf_register_info hf[] = { + { &hf_bacapp_type, + { "APDU Type", "bacapp.bacapp_type", + FT_UINT8, BASE_DEC, NULL, 0xf0, "APDU Type", HFILL } + }, + }; + static gint *ett[] = { + &ett_bacapp, + }; + proto_bacapp = proto_register_protocol("Building Automation and Control Network APDU", + "BACapp", "bacapp"); + proto_register_field_array(proto_bacapp, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + register_dissector("bacapp", dissect_bacapp, proto_bacapp); +} + +void +proto_reg_handoff_bacapp(void) +{ + data_handle = find_dissector("data"); +} + |