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
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
|
/*
* Dissector for the Sony FeliCa Protocol
*
* References:
* http://www.sony.net/Products/felica/business/tech-support/data/fl_usmnl_1.2.pdf
* http://www.sony.net/Products/felica/business/tech-support/data/format_sequence_guidelines_1.1.pdf
* http://code.google.com/u/101410204121169118393/updates
* https://github.com/codebutler/farebot/wiki/Suica
*
* Copyright 2012, Tyson Key <tyson.key@gmail.com>
*
* $Id$
*
* 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.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include <epan/packet.h>
#include <epan/strutil.h>
static int proto_felica = -1;
/* Commmand and response */
static int hf_felica_command = -1;
static int hf_felica_response = -1;
/* System Code */
static int hf_felica_sys_code = -1;
/* Timeslot */
static int hf_felica_timeslot = -1;
/* Manufacture ID/NFCID2 */
static int hf_felica_idm = -1;
/* Request Code */
static int hf_felica_req_code = -1;
/* Manufacture Parameter/PAD */
static int hf_felica_pnm = -1;
/* Number of Services */
static int hf_felica_nbr_of_svcs = -1;
static int hf_felica_svc_code = -1;
static int hf_felica_nbr_of_blocks = -1;
static int hf_felica_block_nbr = -1;
/* Status flag 1 */
static int hf_felica_status_flag1 = -1;
/* Status flag 2 */
static int hf_felica_status_flag2 = -1;
/* - Commands - */
#define CMD_POLLING 0x00
#define CMD_READ_WO_ENCRYPTION 0x06
#define CMD_WRITE_WO_ENCRYPTION 0x08
/* - Responses - */
#define RES_POLLING 0x01
#define RES_READ_WO_ENCRYPTION 0x07
#define RES_WRITE_WO_ENCRYPTION 0x09
/* - Request Codes - */
#define RC_NO_REQ 0x00
#define RC_SYS_REQ 0x01
#define RC_COM_PERF_REQ 0x02
/* - System Codes - */
/* FeliCa Lite/DFC */
#define SC_FELICA_LITE 0x88b4
/* NFC Forum NDEF */
#define SC_NFC_FORUM 0x12fc
/* Felica Networks' Common Area */
#define SC_FELICA_NW_COMMON_AREA 0xfe00
/* Japanese transit card */
#define SC_IRUCA 0xde80
/* "...return a response to the Polling command, regardless
of its System Code" */
#define SC_DOUBLE_WILDCARD 0xffff
/* TODO: Since commands and responses do not have any overlapping values,
* consider a single felica_opcodes[] value_string array encompassing both.
* This would simplify the column update by only calling it in one place, i.e.:
* col_set_str(pinfo->cinfo, COL_INFO,
* val_to_str_const(opcode, felica_opcodes, "Unknown"));
*/
static const value_string felica_commands[] = {
{CMD_POLLING, "Polling"},
{CMD_READ_WO_ENCRYPTION, "Read Without Encryption"},
{CMD_WRITE_WO_ENCRYPTION, "Write Without Encryption"},
/* End of commands */
{0x00, NULL}
};
static const value_string felica_responses[] = {
{RES_POLLING, "Polling"},
{RES_READ_WO_ENCRYPTION, "Read Without Encryption"},
{RES_WRITE_WO_ENCRYPTION, "Write Without Encryption"},
/* End of responses */
{0x00, NULL}
};
static const value_string felica_req_codes[] = {
{RC_NO_REQ, "No Request"},
{RC_SYS_REQ, "System Code Request"},
{RC_COM_PERF_REQ, "Communication Performance Request"},
/* Others are reserved for future use */
/* End of request codes */
{0x00, NULL}
};
static const value_string felica_sys_codes[] = {
{SC_FELICA_LITE, "FeliCa Lite"},
{SC_NFC_FORUM, "NFC Forum (NDEF)"},
{SC_FELICA_NW_COMMON_AREA, "FeliCa Networks Common Area"},
{SC_IRUCA, "IruCa"},
{SC_DOUBLE_WILDCARD, "Wildcard"},
/* End of system codes */
{0x00, NULL}
};
static dissector_handle_t data_handle=NULL;
/* Forward-declare the dissector functions */
static void dissect_felica(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
/* Subtree handles: set by register_subtree_array */
static gint ett_felica = -1;
static void dissect_felica(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *item;
proto_tree *felica_tree = NULL;
guint8 opcode;
guint8 rwe_pos = 0;
tvbuff_t *rwe_resp_data_tvb;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "FeliCa");
col_set_str(pinfo->cinfo, COL_INFO, "FeliCa Packet");
if (tree) {
/* Start with a top-level item to add everything else to */
item = proto_tree_add_item(tree, proto_felica, tvb, 0, -1, ENC_NA);
felica_tree = proto_item_add_subtree(item, ett_felica);
}
opcode = tvb_get_guint8(tvb, 0);
switch (opcode) {
case CMD_POLLING:
col_set_str(pinfo->cinfo, COL_INFO, "Polling Request");
if (tree) {
proto_tree_add_item(felica_tree, hf_felica_command, tvb, 0, 1, ENC_NA);
proto_tree_add_item(felica_tree, hf_felica_sys_code, tvb, 1, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(felica_tree, hf_felica_req_code, tvb, 3, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(felica_tree, hf_felica_timeslot, tvb, 4, 1, ENC_BIG_ENDIAN);
}
break;
case RES_POLLING:
col_set_str(pinfo->cinfo, COL_INFO, "Polling Response");
if (tree) {
proto_tree_add_item(felica_tree, hf_felica_response, tvb, 0, 1, ENC_NA);
proto_tree_add_item(felica_tree, hf_felica_idm, tvb, 1, 8, ENC_BIG_ENDIAN);
proto_tree_add_item(felica_tree, hf_felica_pnm, tvb, 9, 8, ENC_BIG_ENDIAN);
if (tvb_reported_length(tvb) == 19)
proto_tree_add_item(felica_tree, hf_felica_sys_code, tvb, 17, 2, ENC_BIG_ENDIAN);
/*
* Request data - 0 or 2 bytes long; data corresponding to request
* code; only if request code of command packet is not 00 and
* corresponds to request data
*/
}
break;
case CMD_READ_WO_ENCRYPTION:
col_set_str(pinfo->cinfo, COL_INFO, "Read Without Encryption Request");
if (tree) {
proto_tree_add_item(felica_tree, hf_felica_command, tvb, 0, 1, ENC_NA);
proto_tree_add_item(felica_tree, hf_felica_idm, tvb, 1, 8, ENC_BIG_ENDIAN);
proto_tree_add_item(felica_tree, hf_felica_nbr_of_svcs, tvb, 9, 1, ENC_BIG_ENDIAN);
/* Service codes are always 2 bytes in length */
/* There can technically be multiple Service Codes - although my traces only contain 1 */
proto_tree_add_item(felica_tree, hf_felica_svc_code, tvb, 10, 2, ENC_BIG_ENDIAN);
/* Number of Blocks - 1byte */
proto_tree_add_item(felica_tree, hf_felica_nbr_of_blocks, tvb, 12, 1, ENC_BIG_ENDIAN);
/* Iterate through the block list, and update the tree */
for (rwe_pos = 0; rwe_pos < tvb_get_guint8(tvb, 12); rwe_pos++) {
proto_tree_add_uint(felica_tree, hf_felica_block_nbr, tvb,
13 + 2 * rwe_pos, 2, tvb_get_guint8(tvb, 14 + 2 * rwe_pos));
}
}
break;
case RES_READ_WO_ENCRYPTION:
col_set_str(pinfo->cinfo, COL_INFO, "Read Without Encryption Response");
if (tree) {
proto_tree_add_item(felica_tree, hf_felica_response, tvb, 0, 1, ENC_NA);
proto_tree_add_item(felica_tree, hf_felica_idm, tvb, 1, 8, ENC_BIG_ENDIAN);
proto_tree_add_item(felica_tree, hf_felica_status_flag1, tvb, 9, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(felica_tree, hf_felica_status_flag2, tvb, 10, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(felica_tree, hf_felica_nbr_of_blocks, tvb, 11, 1, ENC_BIG_ENDIAN);
}
rwe_resp_data_tvb = tvb_new_subset_remaining(tvb, 12);
call_dissector(data_handle, rwe_resp_data_tvb, pinfo, tree);
break;
case CMD_WRITE_WO_ENCRYPTION:
col_set_str(pinfo->cinfo, COL_INFO, "Write Without Encryption Request");
/* TODO */
break;
case RES_WRITE_WO_ENCRYPTION:
col_set_str(pinfo->cinfo, COL_INFO, "Write Without Encryption Response");
/* TODO */
break;
default:
col_set_str(pinfo->cinfo, COL_INFO, "Unknown");
break;
}
}
void
proto_register_felica(void)
{
static hf_register_info hf[] = {
{&hf_felica_command,
{ "Command", "felica.cmd",
FT_UINT8, BASE_HEX, VALS(felica_commands), 0x0,
NULL, HFILL }
},
{&hf_felica_response,
{ "Response", "felica.res",
FT_UINT8, BASE_HEX,
VALS(felica_responses), 0x0,
NULL, HFILL }
},
/* Request Code */
{&hf_felica_req_code,
{ "Request Code", "felica.req.code",
FT_UINT8, BASE_HEX, VALS(felica_req_codes), 0x0,
NULL, HFILL }
},
{&hf_felica_idm,
{ "IDm (Manufacture ID)/NFCID2", "felica.idm",
FT_UINT64, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
/* System Code */
{&hf_felica_sys_code,
{ "System Code", "felica.sys_code",
FT_UINT16, BASE_HEX, VALS(felica_sys_codes), 0x0,
NULL, HFILL }
},
/* Service Code */
{&hf_felica_svc_code,
{ "Service Code", "felica.svc_code",
FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
/* Parameter/PAD */
{&hf_felica_pnm,
{ "PNm (Manufacture Parameter)/PAD", "felica.pnm",
FT_UINT64, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
/* Number of Services */
{&hf_felica_nbr_of_svcs,
{ "Number of Services", "felica.svcs",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
/* Number of Blocks */
{&hf_felica_nbr_of_blocks,
{ "Number of Blocks", "felica.blocks",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
/* Block ID */
{&hf_felica_block_nbr,
{ "Block Number", "felica.block.nbr",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
/* Status Flag 1 */
{&hf_felica_status_flag1,
{ "Status Flag 1", "felica.status.flag1",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
/* Status Flag 2 */
{&hf_felica_status_flag2,
{ "Status Flag 2", "felica.status.flag2",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
/* Timeslot */
{&hf_felica_timeslot,
{ "Timeslot", "felica.timeslot",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
}
};
static gint *ett[] = {
&ett_felica
};
proto_felica = proto_register_protocol("Sony FeliCa", "FeliCa", "felica");
proto_register_field_array(proto_felica, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
register_dissector("felica", dissect_felica, proto_felica);
}
/* Handler registration */
void
proto_reg_handoff_felica(void)
{
data_handle = find_dissector("data");
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
|
