1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/* packet-telkonet.c
* Routines for ethertype 0x88A1 tunneling dissection
*
* $Id$
*
* Copyright 2006 Joerg Mayer (see AUTHORS file)
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* 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.
*/
/* 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
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib.h>
#include <epan/packet.h>
#include <epan/etypes.h>
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 void
dissect_telkonet(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
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 = tvb_get_guint8(tvb, offset);
if (check_col(pinfo->cinfo, COL_INFO)) {
col_add_fstr(pinfo->cinfo, COL_INFO, "Telkonet type: %s",
val_to_str(type, telkonet_type_vals, "Unknown (0x%02x)"));
}
telkonet_tree = NULL;
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);
}
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("eth_withoutfcs");
telkonet_handle = create_dissector_handle(dissect_telkonet, proto_telkonet);
dissector_add_uint("ethertype", ETHERTYPE_TELKONET, telkonet_handle);
}
|
