summaryrefslogtreecommitdiff
path: root/libcacard/vcard.c
blob: 539177bb4c0ce9ef0a3ede0bd88c56abe5c97a2b (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
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
/*
 * implement the Java card standard.
 *
 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
 * See the COPYING.LIB file in the top-level directory.
 */

#include "qemu-common.h"

#include "vcard.h"
#include "vcard_emul.h"
#include "card_7816t.h"

struct VCardAppletStruct {
    VCardApplet   *next;
    VCardProcessAPDU process_apdu;
    VCardResetApplet reset_applet;
    unsigned char *aid;
    int aid_len;
    void *applet_private;
    VCardAppletPrivateFree applet_private_free;
};

struct VCardStruct {
    int reference_count;
    VCardApplet *applet_list;
    VCardApplet *current_applet[MAX_CHANNEL];
    VCardBufferResponse *vcard_buffer_response;
    VCardType type;
    VCardEmul *vcard_private;
    VCardEmulFree vcard_private_free;
    VCardGetAtr vcard_get_atr;
};

VCardBufferResponse *
vcard_buffer_response_new(unsigned char *buffer, int size)
{
    VCardBufferResponse *new_buffer;

    new_buffer = (VCardBufferResponse *)g_malloc(sizeof(VCardBufferResponse));
    new_buffer->buffer = (unsigned char *)g_malloc(size);
    memcpy(new_buffer->buffer, buffer, size);
    new_buffer->buffer_len = size;
    new_buffer->current = new_buffer->buffer;
    new_buffer->len = size;
    return new_buffer;
}

void
vcard_buffer_response_delete(VCardBufferResponse *buffer_response)
{
    if (buffer_response == NULL) {
        return;
    }
    if (buffer_response->buffer) {
        g_free(buffer_response->buffer);
    }
    g_free(buffer_response);
}


/*
 * clean up state after a reset
 */
void
vcard_reset(VCard *card, VCardPower power)
{
    int i;
    VCardApplet *applet = NULL;

    if (card->type ==  VCARD_DIRECT) {
        /* select the last applet */
        VCardApplet *current_applet = NULL;
        for (current_applet = card->applet_list; current_applet;
                                       current_applet = current_applet->next) {
            applet = current_applet;
        }
    }
    for (i = 0; i < MAX_CHANNEL; i++) {
        card->current_applet[i] = applet;
    }
    if (card->vcard_buffer_response) {
        vcard_buffer_response_delete(card->vcard_buffer_response);
        card->vcard_buffer_response = NULL;
    }
    vcard_emul_reset(card, power);
    if (applet) {
        applet->reset_applet(card, 0);
    }
}

/* applet utilities */

/*
 * applet utilities
 */
/* constructor */
VCardApplet *
vcard_new_applet(VCardProcessAPDU applet_process_function,
                 VCardResetApplet applet_reset_function,
                 unsigned char *aid, int aid_len)
{
    VCardApplet *applet;

    applet = (VCardApplet *)g_malloc(sizeof(VCardApplet));
    applet->next = NULL;
    applet->applet_private = NULL;
    applet->applet_private_free = NULL;
    applet->process_apdu = applet_process_function;
    applet->reset_applet = applet_reset_function;

    applet->aid = g_malloc(aid_len);
    memcpy(applet->aid, aid, aid_len);
    applet->aid_len = aid_len;
    return applet;
}

/* destructor */
void
vcard_delete_applet(VCardApplet *applet)
{
    if (applet == NULL) {
        return;
    }
    if (applet->applet_private_free) {
        applet->applet_private_free(applet->applet_private);
        applet->applet_private = NULL;
    }
    if (applet->aid) {
        g_free(applet->aid);
        applet->aid = NULL;
    }
    g_free(applet);
}

/* accessor */
void
vcard_set_applet_private(VCardApplet *applet, VCardAppletPrivate *private,
                         VCardAppletPrivateFree private_free)
{
    if (applet->applet_private_free) {
        applet->applet_private_free(applet->applet_private);
    }
    applet->applet_private = private;
    applet->applet_private_free = private_free;
}

VCard *
vcard_new(VCardEmul *private, VCardEmulFree private_free)
{
    VCard *new_card;
    int i;

    new_card = (VCard *)g_malloc(sizeof(VCard));
    new_card->applet_list = NULL;
    for (i = 0; i < MAX_CHANNEL; i++) {
        new_card->current_applet[i] = NULL;
    }
    new_card->vcard_buffer_response = NULL;
    new_card->type = VCARD_VM;
    new_card->vcard_private = private;
    new_card->vcard_private_free = private_free;
    new_card->vcard_get_atr = NULL;
    new_card->reference_count = 1;
    return new_card;
}

VCard *
vcard_reference(VCard *vcard)
{
    if (vcard == NULL) {
        return NULL;
    }
    vcard->reference_count++;
    return vcard;
}

void
vcard_free(VCard *vcard)
{
    VCardApplet *current_applet = NULL;
    VCardApplet *next_applet = NULL;

    if (vcard == NULL) {
        return;
    }
    vcard->reference_count--;
    if (vcard->reference_count != 0) {
        return;
    }
    if (vcard->vcard_private_free) {
        (*vcard->vcard_private_free)(vcard->vcard_private);
        vcard->vcard_private_free = 0;
        vcard->vcard_private = 0;
    }
    for (current_applet = vcard->applet_list; current_applet;
                                        current_applet = next_applet) {
        next_applet = current_applet->next;
        vcard_delete_applet(current_applet);
    }
    vcard_buffer_response_delete(vcard->vcard_buffer_response);
    g_free(vcard);
}

void
vcard_get_atr(VCard *vcard, unsigned char *atr, int *atr_len)
{
    if (vcard->vcard_get_atr) {
        (*vcard->vcard_get_atr)(vcard, atr, atr_len);
        return;
    }
    vcard_emul_get_atr(vcard, atr, atr_len);
}

void
vcard_set_atr_func(VCard *card, VCardGetAtr vcard_get_atr)
{
    card->vcard_get_atr = vcard_get_atr;
}


VCardStatus
vcard_add_applet(VCard *card, VCardApplet *applet)
{
    applet->next = card->applet_list;
    card->applet_list = applet;
    /* if our card-type is direct, always call the applet */
    if (card->type ==  VCARD_DIRECT) {
        int i;

        for (i = 0; i < MAX_CHANNEL; i++) {
            card->current_applet[i] = applet;
        }
    }
    return VCARD_DONE;
}

/*
 * manage applets
 */
VCardApplet *
vcard_find_applet(VCard *card, unsigned char *aid, int aid_len)
{
    VCardApplet *current_applet;

    for (current_applet = card->applet_list; current_applet;
                                        current_applet = current_applet->next) {
        if (current_applet->aid_len != aid_len) {
            continue;
        }
        if (memcmp(current_applet->aid, aid, aid_len) == 0) {
            break;
        }
    }
    return current_applet;
}

unsigned char *
vcard_applet_get_aid(VCardApplet *applet, int *aid_len)
{
    if (applet == NULL) {
        return NULL;
    }
    *aid_len = applet->aid_len;
    return applet->aid;
}


void
vcard_select_applet(VCard *card, int channel, VCardApplet *applet)
{
    assert(channel < MAX_CHANNEL);
    card->current_applet[channel] = applet;
    /* reset the applet */
    if (applet && applet->reset_applet) {
        applet->reset_applet(card, channel);
    }
}

VCardAppletPrivate *
vcard_get_current_applet_private(VCard *card, int channel)
{
    VCardApplet *applet = card->current_applet[channel];

    if (applet == NULL) {
        return NULL;
    }
    return applet->applet_private;
}

VCardStatus
vcard_process_applet_apdu(VCard *card, VCardAPDU *apdu,
                          VCardResponse **response)
{
    if (card->current_applet[apdu->a_channel]) {
        return card->current_applet[apdu->a_channel]->process_apdu(
                                                        card, apdu, response);
    }
    return VCARD_NEXT;
}

/*
 * Accessor functions
 */
/* accessor functions for the response buffer */
VCardBufferResponse *
vcard_get_buffer_response(VCard *card)
{
    return card->vcard_buffer_response;
}

void
vcard_set_buffer_response(VCard *card, VCardBufferResponse *buffer)
{
    card->vcard_buffer_response = buffer;
}


/* accessor functions for the type */
VCardType
vcard_get_type(VCard *card)
{
    return card->type;
}

void
vcard_set_type(VCard *card, VCardType type)
{
    card->type = type;
}

/* accessor for private data */
VCardEmul *
vcard_get_private(VCard *vcard)
{
    return vcard->vcard_private;
}