summaryrefslogtreecommitdiffstats
path: root/epan/dissectors/packet-netgear-ensemble.c
blob: ff0fd466fad55e262542c3d3d2d6ef1739c8e761 (plain)
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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
/* packet-netgear-ensemble.c
 *
 * Routines for Netgear AP Ensemble Protocol
 * Charlie Lenahan <clenahan@sonicbison.com>
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#include "config.h"

#include <epan/packet.h>

void proto_register_nge(void);
void proto_reg_handoff_nge(void);

static dissector_handle_t nge_handle;

#define NETGEAR_ENSEMBLE_PORT 4554

static int proto_nge;

static int hf_nge_version;
static int hf_nge_unknown;
static int hf_nge_unknown_int32;
static int hf_nge_sequence;
static int hf_nge_tlv_length;
static int hf_nge_ensemble_name;
static int hf_nge_firmware_name;
static int hf_nge_region_name;
static int hf_nge_firmware_version;
static int hf_nge_ap_name;
static int hf_nge_uptime;
static int hf_nge_mac;
static int hf_nge_ip;
static int hf_nge_uuid;

static int ett_nge;
static int ett_nge_lv;
static int ett_nge_ensemble;


static void
dissect_nge_esemble(tvbuff_t *tvb,proto_tree *tree, int offset)
{
    unsigned strLen=0;

    uint32_t length = tvb_get_uint32(tvb, offset,ENC_BIG_ENDIAN);
    proto_tree *ensemble_tree = proto_tree_add_subtree(tree, tvb, offset, length+4, ett_nge_ensemble, NULL,"Ensemble");

    proto_tree_add_uint(ensemble_tree, hf_nge_tlv_length, tvb, offset, 4, length);
    offset += 4;

    proto_tree_add_item(ensemble_tree, hf_nge_unknown, tvb, offset, 17, ENC_NA);
    offset += 17;

    /* type == 1 ? */
    proto_tree_add_item(ensemble_tree, hf_nge_unknown_int32, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;

    /* uuid ? */
    proto_tree_add_item(ensemble_tree, hf_nge_uuid, tvb, offset, 16, ENC_BIG_ENDIAN);
    offset += 16;

    proto_tree_add_item(ensemble_tree, hf_nge_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;

    proto_tree_add_item(ensemble_tree, hf_nge_unknown, tvb, offset, 20, ENC_NA);
    offset += 20;

    proto_tree_add_item(ensemble_tree, hf_nge_mac, tvb, offset, 6, ENC_NA);
    offset += 6;

    /* type == 2 ? */
    proto_tree_add_item(ensemble_tree, hf_nge_unknown_int32, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;

    proto_tree_add_item_ret_length(ensemble_tree, hf_nge_ensemble_name, tvb, offset, 4, ENC_ASCII|ENC_BIG_ENDIAN, &strLen);
    offset += strLen;

    proto_tree_add_item_ret_length(ensemble_tree, hf_nge_firmware_name, tvb, offset, 4, ENC_ASCII|ENC_BIG_ENDIAN, &strLen);
    offset += strLen;

    proto_tree_add_item_ret_length(ensemble_tree, hf_nge_region_name, tvb, offset, 4, ENC_ASCII|ENC_BIG_ENDIAN, &strLen);
    offset += strLen;

    /* type == 0 ? */
    proto_tree_add_item(ensemble_tree, hf_nge_unknown_int32, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;

    proto_tree_add_item_ret_length(ensemble_tree, hf_nge_firmware_version, tvb, offset, 4, ENC_ASCII|ENC_BIG_ENDIAN, &strLen);
    offset += strLen;

    proto_tree_add_item(ensemble_tree, hf_nge_unknown, tvb, offset, 16, ENC_NA);
    offset += 16;

    /* timestamp? */
    proto_tree_add_item(ensemble_tree, hf_nge_uptime, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;

    proto_tree_add_item_ret_length(ensemble_tree, hf_nge_ap_name, tvb, offset, 4, ENC_ASCII|ENC_BIG_ENDIAN, &strLen);
    offset += strLen;

    proto_tree_add_item(ensemble_tree, hf_nge_unknown, tvb, offset, -1, ENC_NA);

}

static int
dissect_nge(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
    int offset = 0;

    proto_item *ti = proto_tree_add_item(tree, proto_nge, tvb, 0, -1, ENC_NA);
    proto_tree *nge_tree = proto_item_add_subtree(ti, ett_nge);

    col_set_str(pinfo->cinfo, COL_PROTOCOL, "NGE");
    /* Clear out stuff in the info column */
    col_clear(pinfo->cinfo,COL_INFO);

    /* presumed version */
    proto_tree_add_item(nge_tree, hf_nge_version, tvb, offset, 1, ENC_BIG_ENDIAN);
    offset += 1;

    proto_tree_add_item(nge_tree, hf_nge_unknown, tvb, offset, 3, ENC_NA);
    offset += 3;

    proto_tree_add_item(nge_tree, hf_nge_sequence, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;

    dissect_nge_esemble(tvb, nge_tree, offset);

    return tvb_captured_length(tvb);
}


void
proto_register_nge(void)
{
    static hf_register_info hf[] = {
        { &hf_nge_version,
            { "Version", "nge.version",FT_UINT8, BASE_DEC,
                NULL, 0x0,NULL, HFILL }},
        { &hf_nge_unknown,
            { "Unknown", "nge.unknown", FT_BYTES, BASE_NONE,
                NULL, 0x0,NULL, HFILL }},
        { &hf_nge_unknown_int32,
            { "Unknown", "nge.unknown.int32", FT_UINT32, BASE_DEC,
                NULL, 0x0, NULL, HFILL }},
        { &hf_nge_sequence,
            { "Sequence", "nge.sequence", FT_UINT32, BASE_DEC,
                NULL, 0x0, NULL, HFILL }},
        { &hf_nge_uptime,
            { "Uptime", "nge.uptime", FT_UINT32, BASE_DEC,
                NULL, 0x0, NULL, HFILL }},
        { &hf_nge_mac,
            { "MAC", "nge.mac", FT_ETHER, BASE_NONE,
                NULL, 0x0,NULL, HFILL }},
        { &hf_nge_ip,
            { "IP", "nge.ip", FT_IPv4, BASE_NONE,
                NULL, 0x0,NULL, HFILL }},
        { &hf_nge_uuid,
            { "Device UUID", "nge.uuid", FT_GUID, BASE_NONE,
                NULL, 0x0,NULL, HFILL }},
        { &hf_nge_ensemble_name,
            { "Ensemble Name", "nge.ensemble_name", FT_UINT_STRING, BASE_NONE,
                NULL, 0x0, NULL, HFILL }},
        { &hf_nge_firmware_name,
            { "Firmware Name", "nge.firmware_name", FT_UINT_STRING, BASE_NONE,
                NULL, 0x0, NULL, HFILL }},
        { &hf_nge_region_name,
            { "Region Name", "nge.region_name", FT_UINT_STRING, BASE_NONE,
                NULL, 0x0, NULL, HFILL }},
        { &hf_nge_firmware_version,
            { "Firmware Version", "nge.firmware_version", FT_UINT_STRING, BASE_NONE,
                NULL, 0x0, NULL, HFILL }},
        { &hf_nge_ap_name,
            { "AP Name", "nge.ap_name", FT_UINT_STRING, BASE_NONE,
                NULL, 0x0, NULL, HFILL }},
        { &hf_nge_tlv_length,
            { "Length",	"nge.tlv_len", FT_UINT32, BASE_DEC,
                NULL, 0x0, NULL, HFILL }},
    };

    /* Setup protocol subtree array */
    static int *ett[] = {
        &ett_nge,
        &ett_nge_lv,
        &ett_nge_ensemble
    };

    proto_nge = proto_register_protocol ("Netgear Ensemble Protocol", "NGE", "nge");

    proto_register_field_array(proto_nge, hf, array_length(hf));
    proto_register_subtree_array(ett, array_length(ett));

    nge_handle = register_dissector("nge", dissect_nge, proto_nge);
}

void
proto_reg_handoff_nge(void)
{
    dissector_add_for_decode_as_with_preference("udp.port", nge_handle);
}

/*
 * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 *
 * Local variables:
 * c-basic-offset: 4
 * tab-width: 8
 * indent-tabs-mode: nil
 * End:
 *
 * vi: set shiftwidth=4 tabstop=8 expandtab:
 * :indentSize=4:tabSize=8:noTabs=true:
 */