124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
/* packet-telkonet.c
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* Routines for ethertype 0x88A1 tunneling dissection
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*
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* Copyright 2006 Joerg Mayer (see AUTHORS file)
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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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/* 2do:
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* - find out more about the real meaning of the 8 bytes
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* and possible other packet types
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* - Telkonet (www.telkonet.com) has registered other ethertypes
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* as well: find out what they do
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/etypes.h>
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void proto_reg_handoff_telkonet(void);
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void proto_register_telkonet(void);
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static int proto_telkonet = -1;
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static int hf_telkonet_type = -1;
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static gint ett_telkonet = -1;
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static dissector_handle_t eth_withoutfcs_handle;
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typedef enum {
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TELKONET_TYPE_TUNNEL = 0x78
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} telkonet_type_t;
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static const value_string telkonet_type_vals[] = {
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{ TELKONET_TYPE_TUNNEL, "tunnel" },
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{ 0x00, NULL }
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};
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static int
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dissect_telkonet(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_tree *ti, *telkonet_tree;
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int offset = 0;
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telkonet_type_t type;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "TELKONET");
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col_clear(pinfo->cinfo, COL_INFO);
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type = (telkonet_type_t)tvb_get_guint8(tvb, offset);
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col_add_fstr(pinfo->cinfo, COL_INFO, "Telkonet type: %s",
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val_to_str(type, telkonet_type_vals, "Unknown (0x%02x)"));
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ti = proto_tree_add_item(tree, proto_telkonet, tvb, 0, 8, ENC_NA);
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telkonet_tree = proto_item_add_subtree(ti, ett_telkonet);
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proto_tree_add_item(telkonet_tree, hf_telkonet_type, tvb, 0, 8, ENC_NA);
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offset += 8;
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if (type == TELKONET_TYPE_TUNNEL)
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call_dissector(eth_withoutfcs_handle, tvb_new_subset_remaining(tvb, offset),
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pinfo, tree);
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return tvb_captured_length(tvb);
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}
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void
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proto_register_telkonet(void)
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{
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static hf_register_info hf[] = {
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{ &hf_telkonet_type,
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{ "Type", "telkonet.type", FT_BYTES, BASE_NONE, NULL,
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0x0, "TELKONET type", HFILL }},
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};
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static gint *ett[] = {
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&ett_telkonet,
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};
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proto_telkonet = proto_register_protocol("Telkonet powerline", "TELKONET", "telkonet");
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proto_register_field_array(proto_telkonet, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_telkonet(void)
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{
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dissector_handle_t telkonet_handle;
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eth_withoutfcs_handle = find_dissector_add_dependency("eth_withoutfcs", proto_telkonet);
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telkonet_handle = create_dissector_handle(dissect_telkonet, proto_telkonet);
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dissector_add_uint("ethertype", ETHERTYPE_TELKONET, telkonet_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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