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
|
/* Card reader abstraction for libosmosim */
/*
* (C) 2012 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <netinet/in.h>
#include <osmocom/core/msgb.h>
#include <osmocom/sim/sim.h>
#include "sim_int.h"
/* remove the SW from end of the message */
static int get_sw(struct msgb *resp)
{
int ret;
if (!msgb_apdu_de(resp) || msgb_apdu_le(resp) < 2)
return -EIO;
ret = msgb_get_u16(resp);
return ret;
}
/* According to ISO7816-4 Annex A */
static int transceive_apdu_t0(struct osim_card_hdl *st, struct msgb *amsg)
{
struct osim_reader_hdl *rh = st->reader;
struct msgb *tmsg = msgb_alloc(1024, "TPDU");
struct osim_apdu_cmd_hdr *tpduh;
uint8_t *cur;
uint16_t sw;
int rc, num_resp = 0;
/* create TPDU header from APDU header */
tpduh = (struct osim_apdu_cmd_hdr *) msgb_put(tmsg, sizeof(*tpduh));
memcpy(tpduh, msgb_apdu_h(amsg), sizeof(*tpduh));
switch (msgb_apdu_case(amsg)) {
case APDU_CASE_1:
tpduh->p3 = 0x00;
break;
case APDU_CASE_2S:
tpduh->p3 = msgb_apdu_le(amsg);
break;
case APDU_CASE_2E:
if (msgb_apdu_le(amsg) <= 256) {
/* case 2E.1 */
tpduh->p3 = msgb_apdu_le(amsg) & 0xff;
} else {
/* case 2E.2 */
tpduh->p3 = 0;
msgb_put_u16(tmsg, msgb_apdu_le(amsg));
}
break;
case APDU_CASE_3S:
case APDU_CASE_4S:
tpduh->p3 = msgb_apdu_lc(amsg);
cur = msgb_put(tmsg, tpduh->p3);
memcpy(cur, msgb_apdu_dc(amsg), tpduh->p3);
break;
case APDU_CASE_3E:
case APDU_CASE_4E:
if (msgb_apdu_lc(amsg) < 256) {
/* Case 3E.1 */
tpduh->p3 = msgb_apdu_lc(amsg);
} else {
/* Case 3E.2 */
/* FXIME: Split using ENVELOPE! */
return -1;
}
break;
}
transceive_again:
/* store pointer to start of response */
tmsg->l3h = tmsg->tail;
/* transceive */
rc = rh->ops->transceive(st->reader, tmsg);
if (rc < 0) {
msgb_free(tmsg);
return rc;
}
msgb_apdu_sw(tmsg) = get_sw(tmsg);
/* increase number of responsese received */
num_resp++;
/* save SW */
sw = msgb_apdu_sw(tmsg);
printf("sw = 0x%04x\n", sw);
msgb_apdu_sw(amsg) = sw;
switch (msgb_apdu_case(amsg)) {
case APDU_CASE_1:
case APDU_CASE_3S:
/* just copy SW */
break;
case APDU_CASE_2S:
case_2s:
switch (sw >> 8) {
case 0x67: /* Case 2S.2: Le definitely not accepted */
break;
case 0x6c: /* Case 2S.3: Le not accepted, La indicated */
tpduh->p3 = sw & 0xff;
/* re-issue the command with La as */
goto transceive_again;
break;
case 0x90:
/* Case 2S.1, fall-through */
case 0x91: case 0x92: case 0x93: case 0x94: case 0x95:
case 0x96: case 0x97: case 0x98: case 0x99: case 0x9a:
case 0x9b: case 0x9c: case 0x9d: case 0x9e: case 0x9f:
/* Case 2S.4 */
/* copy response data over */
cur = msgb_put(amsg, msgb_l3len(tmsg));
memcpy(cur, tmsg->l3h, msgb_l3len(tmsg));
}
break;
case APDU_CASE_4S:
/* FIXME: this is 4S.2 only for 2nd... response: */
if (num_resp >= 2)
goto case_2s;
switch (sw >> 8) {
case 0x60: case 0x62: case 0x63: case 0x64: case 0x65:
case 0x66: case 0x67: case 0x68: case 0x69: case 0x6a:
case 0x6b: case 0x6c: case 0x6d: case 0x6e: case 0x6f:
/* Case 4S.1: Command not accepted: just copy SW */
break;
case 0x90:
/* case 4S.2: Command accepted */
tpduh->ins = 0xC0;
tpduh->p1 = tpduh->p2 = 0;
tpduh->p3 = msgb_apdu_le(amsg);
/* strip off current result */
msgb_get(tmsg, msgb_length(tmsg)-sizeof(*tpduh));
goto transceive_again;
break;
case 0x61: /* Case 4S.3: command accepted with info added */
case 0x9F: /* FIXME: This is specific to SIM cards */
tpduh->ins = 0xC0;
tpduh->p1 = tpduh->p2 = 0;
tpduh->p3 = OSMO_MIN(msgb_apdu_le(amsg), sw & 0xff);
/* strip off current result */
msgb_get(tmsg, msgb_length(tmsg)-sizeof(*tpduh));
goto transceive_again;
break;
}
/* Case 4S.2: Command accepted: just copy SW */
/* Case 4S.4: Just copy SW */
break;
case APDU_CASE_2E:
if (msgb_apdu_le(amsg) <= 256) {
/* Case 2E.1: Le <= 256 */
goto case_2s;
}
switch (sw >> 8) {
case 0x67:
/* Case 2E.2a: wrong length, abort */
break;
case 0x6c:
/* Case 2E.2b: wrong length, La given */
tpduh->p3 = sw & 0xff;
/* re-issue the command with La as given */
goto transceive_again;
break;
case 0x90:
/* Case 2E.2c: */
break;
case 0x61:
/* Case 2E.2d: more data available */
/* FIXME: issue yet another GET RESPONSE */
break;
}
break;
case APDU_CASE_3E:
/* FIXME: handling for ENVELOPE splitting */
break;
case APDU_CASE_4E:
break;
}
msgb_free(tmsg);
/* compute total length of response data */
msgb_apdu_le(amsg) = amsg->tail - msgb_apdu_de(amsg);
return sw;
}
/* FIXME: T=1 According to ISO7816-4 Annex B */
int osim_transceive_apdu(struct osim_chan_hdl *st, struct msgb *amsg)
{
switch (st->card->proto) {
case OSIM_PROTO_T0:
return transceive_apdu_t0(st->card, amsg);
default:
return -ENOTSUP;
}
}
struct osim_reader_hdl *osim_reader_open(enum osim_reader_driver driver, int idx,
const char *name, void *ctx)
{
const struct osim_reader_ops *ops;
struct osim_reader_hdl *rh;
switch (driver) {
case OSIM_READER_DRV_PCSC:
ops = &pcsc_reader_ops;
break;
default:
return NULL;
}
rh = ops->reader_open(idx, name, ctx);
if (!rh)
return NULL;
rh->ops = ops;
/* FIXME: for now we only do T=0 on all readers */
rh->proto_supported = (1 << OSIM_PROTO_T0);
return rh;
}
struct osim_card_hdl *osim_card_open(struct osim_reader_hdl *rh, enum osim_proto proto)
{
struct osim_card_hdl *ch;
if (!(rh->proto_supported & (1 << proto)))
return NULL;
ch = rh->ops->card_open(rh, proto);
if (!ch)
return NULL;
ch->proto = proto;
return ch;
}
|
