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/* packet-telkonet.c
* Routines for ethertype 0x88A1 tunneling dissection
*
* Copyright 2006 Joerg Mayer (see AUTHORS file)
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/* 2do:
* - find out more about the real meaning of the 8 bytes
* and possible other packet types
* - Telkonet (www.telkonet.com) has registered other ethertypes
* as well: find out what they do
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/etypes.h>
void proto_reg_handoff_telkonet(void);
void proto_register_telkonet(void);
static int proto_telkonet = -1;
static int hf_telkonet_type = -1;
static gint ett_telkonet = -1;
static dissector_handle_t eth_withoutfcs_handle;
typedef enum {
TELKONET_TYPE_TUNNEL = 0x78
} telkonet_type_t;
static const value_string telkonet_type_vals[] = {
{ TELKONET_TYPE_TUNNEL, "tunnel" },
{ 0x00, NULL }
};
static int
dissect_telkonet(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *ti, *telkonet_tree;
int offset = 0;
telkonet_type_t type;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "TELKONET");
col_clear(pinfo->cinfo, COL_INFO);
type = (telkonet_type_t)tvb_get_guint8(tvb, offset);
col_add_fstr(pinfo->cinfo, COL_INFO, "Telkonet type: %s",
val_to_str(type, telkonet_type_vals, "Unknown (0x%02x)"));
ti = proto_tree_add_item(tree, proto_telkonet, tvb, 0, 8, ENC_NA);
telkonet_tree = proto_item_add_subtree(ti, ett_telkonet);
proto_tree_add_item(telkonet_tree, hf_telkonet_type, tvb, 0, 8, ENC_NA);
offset += 8;
if (type == TELKONET_TYPE_TUNNEL)
call_dissector(eth_withoutfcs_handle, tvb_new_subset_remaining(tvb, offset),
pinfo, tree);
return tvb_captured_length(tvb);
}
void
proto_register_telkonet(void)
{
static hf_register_info hf[] = {
{ &hf_telkonet_type,
{ "Type", "telkonet.type", FT_BYTES, BASE_NONE, NULL,
0x0, "TELKONET type", HFILL }},
};
static gint *ett[] = {
&ett_telkonet,
};
proto_telkonet = proto_register_protocol("Telkonet powerline", "TELKONET", "telkonet");
proto_register_field_array(proto_telkonet, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_telkonet(void)
{
dissector_handle_t telkonet_handle;
eth_withoutfcs_handle = find_dissector_add_dependency("eth_withoutfcs", proto_telkonet);
telkonet_handle = create_dissector_handle(dissect_telkonet, proto_telkonet);
dissector_add_uint("ethertype", ETHERTYPE_TELKONET, telkonet_handle);
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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