2010-06-04 12:14:18 +00:00
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/* packet-nwmtp.c
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* Routines for NexusWare MTP3 over UDP transport
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* Copyright 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
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* Copyright 2010 by On-Waves
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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 <glib.h>
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#include <epan/packet.h>
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static dissector_handle_t mtp_handle;
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static gint proto_nwmtp = -1;
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static int hf_nwmtp_transp_type = -1;
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static int hf_nwmtp_user_context = -1;
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static int hf_nwmtp_data_type = -1;
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static int hf_nwmtp_data_index = -1;
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static int hf_nwmtp_data_length = -1;
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/* subtree pointer */
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static gint ett_mwmtp = -1;
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static const value_string nwmtp_transport_type_vals[] = {
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{ 2, "UDP" },
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{ 3, "TCP" },
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{ 0, NULL },
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};
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static const value_string nwmtp_data_type_vals[] = {
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{ 0, "MSU Prio 0" },
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{ 1, "MSU Prio 1" },
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{ 2, "MSU Prio 2" },
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{ 3, "MSU Prio 3" },
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{16, "Retrieved MSU Prio 0" },
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{17, "Retrieved MSU Prio 0" },
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{18, "Retrieved MSU Prio 0" },
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{32, "Retrieval complete" },
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{33, "Retrieval impossible" },
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{ 0, NULL },
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};
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static void dissect_nwmtp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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int offset = 0;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "NW MTP");
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col_clear(pinfo->cinfo, COL_INFO);
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while (tvb_reported_length_remaining(tvb, offset) > 0) {
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proto_item *ti;
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proto_item *nwmtp_tree;
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guint32 len;
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tvbuff_t *next_tvb;
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len = tvb_get_ntohl(tvb, offset + 8);
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if (tree) {
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ti = proto_tree_add_protocol_format(tree, proto_nwmtp,
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tvb, offset, len + 12,
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"NexusWare C7 UDP Protocol");
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nwmtp_tree = proto_item_add_subtree(ti, ett_mwmtp);
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proto_tree_add_item(nwmtp_tree, hf_nwmtp_transp_type,
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tvb, offset, 1, FALSE);
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proto_tree_add_item(nwmtp_tree, hf_nwmtp_data_type,
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tvb, offset + 1, 1, FALSE);
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proto_tree_add_item(nwmtp_tree, hf_nwmtp_data_index,
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tvb, offset + 2, 2, FALSE);
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proto_tree_add_item(nwmtp_tree, hf_nwmtp_user_context,
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tvb, offset + 4, 4, FALSE);
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proto_tree_add_item(nwmtp_tree, hf_nwmtp_data_length,
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tvb, offset + 8, 4, FALSE);
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}
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next_tvb = tvb_new_subset(tvb, offset + 12, len, len);
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call_dissector(mtp_handle, next_tvb, pinfo, tree);
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2010-09-23 21:46:31 +00:00
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offset += len + 12;
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2010-06-04 12:14:18 +00:00
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}
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}
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void proto_register_mwmtp(void)
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{
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static hf_register_info hf[] = {
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{&hf_nwmtp_transp_type,
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{"Transport Type", "nwmtp.transp_type",
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FT_UINT8, BASE_DEC, VALS(nwmtp_transport_type_vals), 0x0,
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"The Transport Type", HFILL}
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},
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{&hf_nwmtp_data_type,
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{"Data Type", "nwmtp.data_type",
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FT_UINT8, BASE_DEC, VALS(nwmtp_data_type_vals), 0x0,
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"The Data Type", HFILL}
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},
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{&hf_nwmtp_data_index,
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{"Link Index", "nwmtp.link_index",
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FT_UINT16, BASE_DEC, NULL, 0x0,
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2010-09-23 21:46:31 +00:00
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NULL, HFILL}
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2010-06-04 12:14:18 +00:00
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},
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{&hf_nwmtp_user_context,
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{"User Context", "nwmtp.user_context",
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FT_UINT32, BASE_DEC, NULL, 0x0,
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"Use Context", HFILL}
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},
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{&hf_nwmtp_data_length,
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{"Length", "nwmtp.data_length",
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FT_UINT32, BASE_DEC, NULL, 0x0,
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"Data Length", HFILL}
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},
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};
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static gint *ett[] = {
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&ett_mwmtp,
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};
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proto_nwmtp =
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proto_register_protocol("NexusWare C7 MTP", "MTP over NW UDP", "nw_mtp");
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proto_register_field_array(proto_nwmtp, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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register_dissector("nw_mtp", dissect_nwmtp, proto_nwmtp);
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}
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void proto_reg_handoff_nwmtp(void)
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{
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dissector_handle_t nwmtp_handle;
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nwmtp_handle = create_dissector_handle(dissect_nwmtp, proto_nwmtp);
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/* For decode as */
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dissector_add_handle("udp.port", nwmtp_handle);
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mtp_handle = find_dissector("mtp3");
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}
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