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1 /*
2  * implement the Java card standard.
3  *
4  * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
5  * See the COPYING.LIB file in the top-level directory.
6  */
7
8 #include "qemu-common.h"
9
10 #include "vcard.h"
11 #include "vcard_emul.h"
12 #include "card_7816t.h"
13
14 struct VCardAppletStruct {
15     VCardApplet   *next;
16     VCardProcessAPDU process_apdu;
17     VCardResetApplet reset_applet;
18     unsigned char *aid;
19     int aid_len;
20     void *applet_private;
21     VCardAppletPrivateFree applet_private_free;
22 };
23
24 struct VCardStruct {
25     int reference_count;
26     VCardApplet *applet_list;
27     VCardApplet *current_applet[MAX_CHANNEL];
28     VCardBufferResponse *vcard_buffer_response;
29     VCardType type;
30     VCardEmul *vcard_private;
31     VCardEmulFree vcard_private_free;
32     VCardGetAtr vcard_get_atr;
33 };
34
35 VCardBufferResponse *
36 vcard_buffer_response_new(unsigned char *buffer, int size)
37 {
38     VCardBufferResponse *new_buffer;
39
40     new_buffer = (VCardBufferResponse *)g_malloc(sizeof(VCardBufferResponse));
41     new_buffer->buffer = (unsigned char *)g_malloc(size);
42     memcpy(new_buffer->buffer, buffer, size);
43     new_buffer->buffer_len = size;
44     new_buffer->current = new_buffer->buffer;
45     new_buffer->len = size;
46     return new_buffer;
47 }
48
49 void
50 vcard_buffer_response_delete(VCardBufferResponse *buffer_response)
51 {
52     if (buffer_response == NULL) {
53         return;
54     }
55     if (buffer_response->buffer) {
56         g_free(buffer_response->buffer);
57     }
58     g_free(buffer_response);
59 }
60
61
62 /*
63  * clean up state after a reset
64  */
65 void
66 vcard_reset(VCard *card, VCardPower power)
67 {
68     int i;
69     VCardApplet *applet = NULL;
70
71     if (card->type ==  VCARD_DIRECT) {
72         /* select the last applet */
73         VCardApplet *current_applet = NULL;
74         for (current_applet = card->applet_list; current_applet;
75                                        current_applet = current_applet->next) {
76             applet = current_applet;
77         }
78     }
79     for (i = 0; i < MAX_CHANNEL; i++) {
80         card->current_applet[i] = applet;
81     }
82     if (card->vcard_buffer_response) {
83         vcard_buffer_response_delete(card->vcard_buffer_response);
84         card->vcard_buffer_response = NULL;
85     }
86     vcard_emul_reset(card, power);
87     if (applet) {
88         applet->reset_applet(card, 0);
89     }
90 }
91
92 /* applet utilities */
93
94 /*
95  * applet utilities
96  */
97 /* constructor */
98 VCardApplet *
99 vcard_new_applet(VCardProcessAPDU applet_process_function,
100                  VCardResetApplet applet_reset_function,
101                  unsigned char *aid, int aid_len)
102 {
103     VCardApplet *applet;
104
105     applet = (VCardApplet *)g_malloc(sizeof(VCardApplet));
106     applet->next = NULL;
107     applet->applet_private = NULL;
108     applet->applet_private_free = NULL;
109     applet->process_apdu = applet_process_function;
110     applet->reset_applet = applet_reset_function;
111
112     applet->aid = g_malloc(aid_len);
113     memcpy(applet->aid, aid, aid_len);
114     applet->aid_len = aid_len;
115     return applet;
116 }
117
118 /* destructor */
119 void
120 vcard_delete_applet(VCardApplet *applet)
121 {
122     if (applet == NULL) {
123         return;
124     }
125     if (applet->applet_private_free) {
126         applet->applet_private_free(applet->applet_private);
127         applet->applet_private = NULL;
128     }
129     if (applet->aid) {
130         g_free(applet->aid);
131         applet->aid = NULL;
132     }
133     g_free(applet);
134 }
135
136 /* accessor */
137 void
138 vcard_set_applet_private(VCardApplet *applet, VCardAppletPrivate *private,
139                          VCardAppletPrivateFree private_free)
140 {
141     if (applet->applet_private_free) {
142         applet->applet_private_free(applet->applet_private);
143     }
144     applet->applet_private = private;
145     applet->applet_private_free = private_free;
146 }
147
148 VCard *
149 vcard_new(VCardEmul *private, VCardEmulFree private_free)
150 {
151     VCard *new_card;
152     int i;
153
154     new_card = (VCard *)g_malloc(sizeof(VCard));
155     new_card->applet_list = NULL;
156     for (i = 0; i < MAX_CHANNEL; i++) {
157         new_card->current_applet[i] = NULL;
158     }
159     new_card->vcard_buffer_response = NULL;
160     new_card->type = VCARD_VM;
161     new_card->vcard_private = private;
162     new_card->vcard_private_free = private_free;
163     new_card->vcard_get_atr = NULL;
164     new_card->reference_count = 1;
165     return new_card;
166 }
167
168 VCard *
169 vcard_reference(VCard *vcard)
170 {
171     if (vcard == NULL) {
172         return NULL;
173     }
174     vcard->reference_count++;
175     return vcard;
176 }
177
178 void
179 vcard_free(VCard *vcard)
180 {
181     VCardApplet *current_applet = NULL;
182     VCardApplet *next_applet = NULL;
183
184     if (vcard == NULL) {
185         return;
186     }
187     vcard->reference_count--;
188     if (vcard->reference_count != 0) {
189         return;
190     }
191     if (vcard->vcard_private_free) {
192         (*vcard->vcard_private_free)(vcard->vcard_private);
193         vcard->vcard_private_free = 0;
194         vcard->vcard_private = 0;
195     }
196     for (current_applet = vcard->applet_list; current_applet;
197                                         current_applet = next_applet) {
198         next_applet = current_applet->next;
199         vcard_delete_applet(current_applet);
200     }
201     vcard_buffer_response_delete(vcard->vcard_buffer_response);
202     g_free(vcard);
203 }
204
205 void
206 vcard_get_atr(VCard *vcard, unsigned char *atr, int *atr_len)
207 {
208     if (vcard->vcard_get_atr) {
209         (*vcard->vcard_get_atr)(vcard, atr, atr_len);
210         return;
211     }
212     vcard_emul_get_atr(vcard, atr, atr_len);
213 }
214
215 void
216 vcard_set_atr_func(VCard *card, VCardGetAtr vcard_get_atr)
217 {
218     card->vcard_get_atr = vcard_get_atr;
219 }
220
221
222 VCardStatus
223 vcard_add_applet(VCard *card, VCardApplet *applet)
224 {
225     applet->next = card->applet_list;
226     card->applet_list = applet;
227     /* if our card-type is direct, always call the applet */
228     if (card->type ==  VCARD_DIRECT) {
229         int i;
230
231         for (i = 0; i < MAX_CHANNEL; i++) {
232             card->current_applet[i] = applet;
233         }
234     }
235     return VCARD_DONE;
236 }
237
238 /*
239  * manage applets
240  */
241 VCardApplet *
242 vcard_find_applet(VCard *card, unsigned char *aid, int aid_len)
243 {
244     VCardApplet *current_applet;
245
246     for (current_applet = card->applet_list; current_applet;
247                                         current_applet = current_applet->next) {
248         if (current_applet->aid_len != aid_len) {
249             continue;
250         }
251         if (memcmp(current_applet->aid, aid, aid_len) == 0) {
252             break;
253         }
254     }
255     return current_applet;
256 }
257
258 unsigned char *
259 vcard_applet_get_aid(VCardApplet *applet, int *aid_len)
260 {
261     if (applet == NULL) {
262         return NULL;
263     }
264     *aid_len = applet->aid_len;
265     return applet->aid;
266 }
267
268
269 void
270 vcard_select_applet(VCard *card, int channel, VCardApplet *applet)
271 {
272     assert(channel < MAX_CHANNEL);
273     card->current_applet[channel] = applet;
274     /* reset the applet */
275     if (applet && applet->reset_applet) {
276         applet->reset_applet(card, channel);
277     }
278 }
279
280 VCardAppletPrivate *
281 vcard_get_current_applet_private(VCard *card, int channel)
282 {
283     VCardApplet *applet = card->current_applet[channel];
284
285     if (applet == NULL) {
286         return NULL;
287     }
288     return applet->applet_private;
289 }
290
291 VCardStatus
292 vcard_process_applet_apdu(VCard *card, VCardAPDU *apdu,
293                           VCardResponse **response)
294 {
295     if (card->current_applet[apdu->a_channel]) {
296         return card->current_applet[apdu->a_channel]->process_apdu(
297                                                         card, apdu, response);
298     }
299     return VCARD_NEXT;
300 }
301
302 /*
303  * Accessor functions
304  */
305 /* accessor functions for the response buffer */
306 VCardBufferResponse *
307 vcard_get_buffer_response(VCard *card)
308 {
309     return card->vcard_buffer_response;
310 }
311
312 void
313 vcard_set_buffer_response(VCard *card, VCardBufferResponse *buffer)
314 {
315     card->vcard_buffer_response = buffer;
316 }
317
318
319 /* accessor functions for the type */
320 VCardType
321 vcard_get_type(VCard *card)
322 {
323     return card->type;
324 }
325
326 void
327 vcard_set_type(VCard *card, VCardType type)
328 {
329     card->type = type;
330 }
331
332 /* accessor for private data */
333 VCardEmul *
334 vcard_get_private(VCard *vcard)
335 {
336     return vcard->vcard_private;
337 }
338
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