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
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
|
/* packet-manolito.c
* Routines for Blubster/Piolet Manolito Protocol dissection
* Copyright 2003-2004, Jeff Connelly <shellreef+mp2p@gmail.com>
*
* Official home page: http://openlito.sourceforge.net/
*
* 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>
#include <epan/expert.h>
void proto_register_manolito(void);
void proto_reg_handoff_manolito(void);
static dissector_handle_t manolito_handle;
#define MANOLITO_PORT 41170 /* Not IANA registered */
static int proto_manolito = -1;
static int hf_manolito_checksum = -1;
static int hf_manolito_seqno = -1;
static int hf_manolito_src = -1;
static int hf_manolito_dest = -1;
static int hf_manolito_options_short = -1;
static int hf_manolito_options = -1;
static int hf_manolito_string = -1;
static int hf_manolito_integer = -1;
static gint ett_manolito = -1;
static expert_field ei_manolito_type = EI_INIT;
#define MANOLITO_STRING 1
#define MANOLITO_INTEGER 0
static const value_string field_longname[] = {
{ 0x4144, "???" },
{ 0x4252, "Bit Rate" },
{ 0x434b, "Checksum" },
{ 0x434e, "Client Name" },
{ 0x4356, "Client Version" },
{ 0x4643, "Frequency" },
{ 0x464c, "File Length" },
{ 0x464e, "Filename" },
{ 0x484e, "???" },
{ 0x4944, "Identification" },
{ 0x4d45, "Message" },
{ 0x4e43, "Num. Connections" },
{ 0x4e49, "Network ID" },
{ 0x4e4e, "Nickname" },
{ 0x5054, "Port" },
{ 0x5346, "Shared Files" },
{ 0x534b, "Shared Kilobytes" },
{ 0x534c, "Song Length (s)" },
{ 0x5354, "???" },
{ 0x564c, "Velocity" },
{ 0, NULL }
};
static value_string_ext field_longname_ext = VALUE_STRING_EXT_INIT(field_longname);
static int
dissect_manolito(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* dissector_data _U_)
{
gint offset = 0;
proto_item *ti;
proto_tree *manolito_tree;
gchar *packet_type = NULL;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "MANOLITO");
ti = proto_tree_add_item(tree, proto_manolito, tvb, offset, -1, ENC_NA);
manolito_tree = proto_item_add_subtree(ti, ett_manolito);
/* MANOLITO packet header (network byte order) */
proto_tree_add_checksum(manolito_tree, tvb, offset, hf_manolito_checksum,
-1, NULL, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS);
offset += 4;
proto_tree_add_item(manolito_tree,
hf_manolito_seqno, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(manolito_tree,
hf_manolito_src, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(manolito_tree,
hf_manolito_dest, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
if (tvb_reported_length_remaining(tvb, offset) == 3) {
proto_tree_add_item(manolito_tree,
hf_manolito_options_short, tvb, offset, 3, ENC_BIG_ENDIAN);
offset += 3;
col_set_str(pinfo->cinfo, COL_INFO, "Ping (truncated)");
return offset;
}
proto_tree_add_item(manolito_tree,
hf_manolito_options, tvb, 16, 4, ENC_BIG_ENDIAN);
offset += 4;
if (tvb_reported_length_remaining(tvb, offset) == 0) {
col_set_str(pinfo->cinfo, COL_INFO, "Ping");
return offset;
}
/* fields format: 2-byte name, optional NULL, 1-byte lenlen, */
/* that many bytes(len or data), for NI,CN,VL is len, more */
/* (that many bytes) data follows; else is raw data. */
do
{
guint16 field_name; /* 16-bit field name */
guint8 dtype; /* data-type */
guint8 length; /* length */
int start; /* field starting location */
guint8 *field_name_str;
start = offset;
/* 2-byte field name */
field_name = tvb_get_ntohs(tvb, offset);
field_name_str = tvb_get_string_enc(pinfo->pool, tvb, offset, 2, ENC_ASCII);
if (!packet_type) {
/* Identify the packet based on existing fields */
/* Maybe using the options fields is a better idea...*/
if (field_name == 0x434b) /* CK */
packet_type = "Search Hit";
if (field_name == 0x4e43) /* NC */
packet_type = "User Information";
if (field_name == 0x464e) /* FN - if only field */
packet_type = "Search Query";
if (field_name == 0x4944) /* ID ?? search by CK? */
packet_type = "Search Query (by hash)";
if (field_name == 0x5054) /* PT */
packet_type = "Download Request";
if (field_name == 0x4d45) /* ME */
packet_type = "Chat";
}
offset += 2;
/* 1-byte data type */
dtype = tvb_get_guint8(tvb, offset);
offset++;
length = tvb_get_guint8(tvb, offset);
offset++;
if (dtype == MANOLITO_STRING) {
guint8 *str;
str = tvb_get_string_enc(pinfo->pool, tvb, offset, length, ENC_ASCII);
proto_tree_add_string_format(manolito_tree, hf_manolito_string, tvb, start,
4+length, str, "%s (%s): %s",
field_name_str,
val_to_str_ext_const(field_name, &field_longname_ext, "unknown"),
str);
offset += length;
}
else if (dtype == MANOLITO_INTEGER) {
gboolean len_ok = TRUE;
guint64 n = 0;
/* integers can be up to 5 bytes */
switch(length)
{
case 5:
n = tvb_get_ntoh40(tvb, offset);
break;
case 4:
n = tvb_get_ntohl(tvb, offset);
break;
case 3:
n = tvb_get_ntoh24(tvb, offset);
break;
case 2:
n = tvb_get_ntohs(tvb, offset);
break;
case 1:
n = tvb_get_guint8(tvb, offset);
break;
default:
len_ok = FALSE;
}
if (len_ok) {
proto_tree_add_uint64_format(manolito_tree, hf_manolito_integer, tvb, start,
4+length, n, "%s (%s): %" PRIu64,
field_name_str,
val_to_str_ext_const(field_name, &field_longname_ext, "unknown"),
n);
}
else {
/* XXX - expert info */
}
offset += length;
}
else {
proto_tree_add_expert_format(manolito_tree, pinfo, &ei_manolito_type,
tvb, start, offset - start, "Unknown type %d", dtype);
}
} while(tvb_reported_length_remaining(tvb, offset));
if (packet_type)
col_set_str(pinfo->cinfo, COL_INFO, packet_type);
return offset;
}
void
proto_register_manolito(void)
{
static hf_register_info hf[] = {
{ &hf_manolito_checksum,
{ "Checksum", "manolito.checksum",
FT_UINT32, BASE_HEX, NULL, 0,
"Checksum used for verifying integrity", HFILL }
},
{ &hf_manolito_seqno,
{ "Sequence Number", "manolito.seqno",
FT_UINT32, BASE_HEX, NULL, 0,
"Incremental sequence number", HFILL }
},
{ &hf_manolito_src,
{ "Forwarded IP Address", "manolito.src",
FT_IPv4, BASE_NONE, NULL, 0,
"Host packet was forwarded from (or 0)", HFILL }
},
{ &hf_manolito_dest,
{ "Destination IP Address", "manolito.dest",
FT_IPv4, BASE_NONE, NULL, 0,
"Destination IPv4 address", HFILL }
},
{ &hf_manolito_options_short,
{ "Options", "manolito.options",
FT_UINT24, BASE_HEX, NULL, 0,
"Packet-dependent data", HFILL }
},
{ &hf_manolito_options,
{ "Options", "manolito.options",
FT_UINT32, BASE_HEX, NULL, 0,
"Packet-dependent data", HFILL }
},
{ &hf_manolito_string,
{ "String field", "manolito.string",
FT_STRING, BASE_NONE, NULL, 0,
NULL, HFILL }
},
{ &hf_manolito_integer,
{ "Integer field", "manolito.integer",
FT_UINT40, BASE_DEC, NULL, 0,
NULL, HFILL }
},
};
static gint *ett[] = {
&ett_manolito,
};
static ei_register_info ei[] = {
{ &ei_manolito_type, { "manolito.type.unknown", PI_PROTOCOL, PI_WARN, "Unknown type", EXPFILL }},
};
expert_module_t* expert_manolito;
proto_manolito = proto_register_protocol("Blubster/Piolet MANOLITO Protocol", "Manolito", "manolito");
proto_register_field_array(proto_manolito, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_manolito = expert_register_protocol(proto_manolito);
expert_register_field_array(expert_manolito, ei, array_length(ei));
manolito_handle = register_dissector("manolito", dissect_manolito, proto_manolito);
}
void
proto_reg_handoff_manolito(void)
{
dissector_add_uint_with_preference("udp.port", MANOLITO_PORT, manolito_handle);
}
/*
* Editor modelines - https://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:
*/
|
