Line data Source code
1 : /* app.c - Application selection.
2 : * Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
3 : *
4 : * This file is part of GnuPG.
5 : *
6 : * GnuPG is free software; you can redistribute it and/or modify
7 : * it under the terms of the GNU General Public License as published by
8 : * the Free Software Foundation; either version 3 of the License, or
9 : * (at your option) any later version.
10 : *
11 : * GnuPG is distributed in the hope that it will be useful,
12 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 : * GNU General Public License for more details.
15 : *
16 : * You should have received a copy of the GNU General Public License
17 : * along with this program; if not, see <https://www.gnu.org/licenses/>.
18 : */
19 :
20 : #include <config.h>
21 : #include <errno.h>
22 : #include <stdio.h>
23 : #include <stdlib.h>
24 : #include <string.h>
25 : #include <npth.h>
26 :
27 : #include "scdaemon.h"
28 : #include "app-common.h"
29 : #include "iso7816.h"
30 : #include "apdu.h"
31 : #include "tlv.h"
32 :
33 : /* This table is used to keep track of locks on a per reader base.
34 : The index into the table is the slot number of the reader. The
35 : mutex will be initialized on demand (one of the advantages of a
36 : userland threading system). */
37 : static struct
38 : {
39 : int initialized;
40 : npth_mutex_t lock;
41 : app_t app; /* Application context in use or NULL. */
42 : } lock_table[10];
43 :
44 :
45 :
46 : static void deallocate_app (app_t app);
47 :
48 :
49 :
50 : static void
51 0 : print_progress_line (void *opaque, const char *what, int pc, int cur, int tot)
52 : {
53 0 : ctrl_t ctrl = opaque;
54 : char line[100];
55 :
56 0 : if (ctrl)
57 : {
58 0 : snprintf (line, sizeof line, "%s %c %d %d", what, pc, cur, tot);
59 0 : send_status_direct (ctrl, "PROGRESS", line);
60 : }
61 0 : }
62 :
63 :
64 : /* Lock the reader SLOT. This function shall be used right before
65 : calling any of the actual application functions to serialize access
66 : to the reader. We do this always even if the reader is not
67 : actually used. This allows an actual connection to assume that it
68 : never shares a reader (while performing one command). Returns 0 on
69 : success; only then the unlock_reader function must be called after
70 : returning from the handler. */
71 : static gpg_error_t
72 0 : lock_reader (int slot, ctrl_t ctrl)
73 : {
74 : int res;
75 :
76 0 : if (slot < 0 || slot >= DIM (lock_table))
77 0 : return gpg_error (slot<0? GPG_ERR_INV_VALUE : GPG_ERR_RESOURCE_LIMIT);
78 :
79 0 : if (!lock_table[slot].initialized)
80 : {
81 0 : res = npth_mutex_init (&lock_table[slot].lock, NULL);
82 0 : if (res)
83 : {
84 0 : log_error ("error initializing mutex: %s\n", strerror (res));
85 0 : return gpg_error_from_errno (res);
86 : }
87 0 : lock_table[slot].initialized = 1;
88 0 : lock_table[slot].app = NULL;
89 : }
90 :
91 0 : res = npth_mutex_lock (&lock_table[slot].lock);
92 0 : if (res)
93 : {
94 0 : log_error ("failed to acquire APP lock for slot %d: %s\n",
95 : slot, strerror (res));
96 0 : return gpg_error_from_errno (res);
97 : }
98 :
99 0 : apdu_set_progress_cb (slot, print_progress_line, ctrl);
100 :
101 0 : return 0;
102 : }
103 :
104 : /* Release a lock on the reader. See lock_reader(). */
105 : static void
106 0 : unlock_reader (int slot)
107 : {
108 : int res;
109 :
110 0 : if (slot < 0 || slot >= DIM (lock_table)
111 0 : || !lock_table[slot].initialized)
112 0 : log_bug ("unlock_reader called for invalid slot %d\n", slot);
113 :
114 0 : apdu_set_progress_cb (slot, NULL, NULL);
115 :
116 0 : res = npth_mutex_unlock (&lock_table[slot].lock);
117 0 : if (res)
118 0 : log_error ("failed to release APP lock for slot %d: %s\n",
119 : slot, strerror (res));
120 0 : }
121 :
122 :
123 : /* This function may be called to print information pertaining to the
124 : current state of this module to the log. */
125 : void
126 0 : app_dump_state (void)
127 : {
128 : int slot;
129 :
130 0 : for (slot=0; slot < DIM (lock_table); slot++)
131 0 : if (lock_table[slot].initialized)
132 : {
133 0 : log_info ("app_dump_state: slot=%d", slot);
134 0 : if (lock_table[slot].app)
135 : {
136 0 : log_printf (" app=%p", lock_table[slot].app);
137 0 : if (lock_table[slot].app->apptype)
138 0 : log_printf (" type='%s'", lock_table[slot].app->apptype);
139 : }
140 0 : log_printf ("\n");
141 : }
142 0 : }
143 :
144 : /* Check wether the application NAME is allowed. This does not mean
145 : we have support for it though. */
146 : static int
147 0 : is_app_allowed (const char *name)
148 : {
149 : strlist_t l;
150 :
151 0 : for (l=opt.disabled_applications; l; l = l->next)
152 0 : if (!strcmp (l->d, name))
153 0 : return 0; /* no */
154 0 : return 1; /* yes */
155 : }
156 :
157 :
158 : /* This may be called to tell this module about a removed or resetted card. */
159 : void
160 0 : application_notify_card_reset (int slot)
161 : {
162 0 : if (slot < 0 || slot >= DIM (lock_table))
163 0 : return;
164 :
165 : /* FIXME: We are ignoring any error value here. */
166 0 : lock_reader (slot, NULL);
167 :
168 : /* Release the APP, as it's not reusable any more. */
169 0 : if (lock_table[slot].app)
170 : {
171 0 : if (lock_table[slot].app->ref_count)
172 0 : log_bug ("trying to release active context\n");
173 :
174 0 : deallocate_app (lock_table[slot].app);
175 0 : lock_table[slot].app = NULL;
176 0 : log_debug ("application has been released\n");
177 : }
178 :
179 0 : unlock_reader (slot);
180 : }
181 :
182 :
183 : /*
184 : * This function is called with lock held.
185 : */
186 : static gpg_error_t
187 0 : check_conflict (int slot, const char *name)
188 : {
189 0 : app_t app = lock_table[slot].app;
190 :
191 0 : if (!app || !name || (app->apptype && !ascii_strcasecmp (app->apptype, name)))
192 0 : return 0;
193 :
194 0 : if (!app->ref_count)
195 : {
196 0 : lock_table[slot].app = NULL;
197 0 : deallocate_app (app);
198 0 : return 0;
199 : }
200 : else
201 : {
202 0 : log_info ("application '%s' in use by reader %d - can't switch\n",
203 0 : app->apptype? app->apptype : "<null>", slot);
204 0 : return gpg_error (GPG_ERR_CONFLICT);
205 : }
206 : }
207 :
208 : /* This function is used by the serialno command to check for an
209 : application conflict which may appear if the serialno command is
210 : used to request a specific application and the connection has
211 : already done a select_application. */
212 : gpg_error_t
213 0 : check_application_conflict (ctrl_t ctrl, int slot, const char *name)
214 : {
215 : gpg_error_t err;
216 :
217 0 : if (slot < 0 || slot >= DIM (lock_table))
218 0 : return gpg_error (GPG_ERR_INV_VALUE);
219 :
220 0 : err = lock_reader (slot, ctrl);
221 0 : if (err)
222 0 : return err;
223 :
224 0 : err = check_conflict (slot, name);
225 0 : unlock_reader (slot);
226 0 : return err;
227 : }
228 :
229 :
230 : /* If called with NAME as NULL, select the best fitting application
231 : and return a context; otherwise select the application with NAME
232 : and return a context. SLOT identifies the reader device. Returns
233 : an error code and stores NULL at R_APP if no application was found
234 : or no card is present. */
235 : gpg_error_t
236 0 : select_application (ctrl_t ctrl, int slot, const char *name, app_t *r_app)
237 : {
238 : gpg_error_t err;
239 0 : app_t app = NULL;
240 0 : unsigned char *result = NULL;
241 : size_t resultlen;
242 : int want_undefined;
243 :
244 : (void)ctrl;
245 :
246 0 : *r_app = NULL;
247 :
248 0 : want_undefined = (name && !strcmp (name, "undefined"));
249 :
250 0 : err = lock_reader (slot, ctrl);
251 0 : if (err)
252 0 : return err;
253 :
254 : /* First check whether we already have an application to share. */
255 0 : err = check_conflict (slot, name);
256 0 : if (err)
257 : {
258 0 : unlock_reader (slot);
259 0 : return err;
260 : }
261 :
262 0 : app = lock_table[slot].app;
263 :
264 : /* If we can reuse an application, bump the reference count and
265 : return it. */
266 0 : if (app)
267 : {
268 0 : if (app->slot != slot)
269 0 : log_bug ("slot mismatch %d/%d\n", app->slot, slot);
270 0 : app->slot = slot;
271 :
272 0 : app->ref_count++;
273 0 : *r_app = app;
274 0 : unlock_reader (slot);
275 0 : return 0; /* Okay: We share that one. */
276 : }
277 :
278 : /* Need to allocate a new one. */
279 0 : app = xtrycalloc (1, sizeof *app);
280 0 : if (!app)
281 : {
282 0 : err = gpg_error_from_syserror ();
283 0 : log_info ("error allocating context: %s\n", gpg_strerror (err));
284 0 : unlock_reader (slot);
285 0 : return err;
286 : }
287 0 : app->slot = slot;
288 :
289 :
290 : /* Fixme: We should now first check whether a card is at all
291 : present. */
292 :
293 : /* Try to read the GDO file first to get a default serial number.
294 : We skip this if the undefined application has been requested. */
295 0 : if (!want_undefined)
296 : {
297 0 : err = iso7816_select_file (slot, 0x3F00, 1, NULL, NULL);
298 0 : if (!err)
299 0 : err = iso7816_select_file (slot, 0x2F02, 0, NULL, NULL);
300 0 : if (!err)
301 0 : err = iso7816_read_binary (slot, 0, 0, &result, &resultlen);
302 0 : if (!err)
303 : {
304 : size_t n;
305 : const unsigned char *p;
306 :
307 0 : p = find_tlv_unchecked (result, resultlen, 0x5A, &n);
308 0 : if (p)
309 0 : resultlen -= (p-result);
310 0 : if (p && n > resultlen && n == 0x0d && resultlen+1 == n)
311 : {
312 : /* The object it does not fit into the buffer. This is an
313 : invalid encoding (or the buffer is too short. However, I
314 : have some test cards with such an invalid encoding and
315 : therefore I use this ugly workaround to return something
316 : I can further experiment with. */
317 0 : log_info ("enabling BMI testcard workaround\n");
318 0 : n--;
319 : }
320 :
321 0 : if (p && n <= resultlen)
322 : {
323 : /* The GDO file is pretty short, thus we simply reuse it for
324 : storing the serial number. */
325 0 : memmove (result, p, n);
326 0 : app->serialno = result;
327 0 : app->serialnolen = n;
328 0 : err = app_munge_serialno (app);
329 0 : if (err)
330 0 : goto leave;
331 : }
332 : else
333 0 : xfree (result);
334 0 : result = NULL;
335 : }
336 : }
337 :
338 : /* For certain error codes, there is no need to try more. */
339 0 : if (gpg_err_code (err) == GPG_ERR_CARD_NOT_PRESENT
340 0 : || gpg_err_code (err) == GPG_ERR_ENODEV)
341 : goto leave;
342 :
343 : /* Figure out the application to use. */
344 0 : if (want_undefined)
345 : {
346 : /* We switch to the "undefined" application only if explicitly
347 : requested. */
348 0 : app->apptype = "UNDEFINED";
349 0 : err = 0;
350 : }
351 : else
352 0 : err = gpg_error (GPG_ERR_NOT_FOUND);
353 :
354 0 : if (err && is_app_allowed ("openpgp")
355 0 : && (!name || !strcmp (name, "openpgp")))
356 0 : err = app_select_openpgp (app);
357 0 : if (err && is_app_allowed ("nks") && (!name || !strcmp (name, "nks")))
358 0 : err = app_select_nks (app);
359 0 : if (err && is_app_allowed ("p15") && (!name || !strcmp (name, "p15")))
360 0 : err = app_select_p15 (app);
361 0 : if (err && is_app_allowed ("geldkarte")
362 0 : && (!name || !strcmp (name, "geldkarte")))
363 0 : err = app_select_geldkarte (app);
364 0 : if (err && is_app_allowed ("dinsig") && (!name || !strcmp (name, "dinsig")))
365 0 : err = app_select_dinsig (app);
366 0 : if (err && is_app_allowed ("sc-hsm") && (!name || !strcmp (name, "sc-hsm")))
367 0 : err = app_select_sc_hsm (app);
368 0 : if (err && name && gpg_err_code (err) != GPG_ERR_OBJ_TERM_STATE)
369 0 : err = gpg_error (GPG_ERR_NOT_SUPPORTED);
370 :
371 : leave:
372 0 : if (err)
373 : {
374 0 : if (name)
375 0 : log_info ("can't select application '%s': %s\n",
376 : name, gpg_strerror (err));
377 : else
378 0 : log_info ("no supported card application found: %s\n",
379 : gpg_strerror (err));
380 0 : xfree (app);
381 0 : unlock_reader (slot);
382 0 : return err;
383 : }
384 :
385 0 : app->ref_count = 1;
386 :
387 0 : lock_table[slot].app = app;
388 0 : *r_app = app;
389 0 : unlock_reader (slot);
390 0 : return 0;
391 : }
392 :
393 :
394 : char *
395 0 : get_supported_applications (void)
396 : {
397 0 : const char *list[] = {
398 : "openpgp",
399 : "nks",
400 : "p15",
401 : "geldkarte",
402 : "dinsig",
403 : "sc-hsm",
404 : /* Note: "undefined" is not listed here because it needs special
405 : treatment by the client. */
406 : NULL
407 : };
408 : int idx;
409 : size_t nbytes;
410 : char *buffer, *p;
411 :
412 0 : for (nbytes=1, idx=0; list[idx]; idx++)
413 0 : nbytes += strlen (list[idx]) + 1 + 1;
414 :
415 0 : buffer = xtrymalloc (nbytes);
416 0 : if (!buffer)
417 0 : return NULL;
418 :
419 0 : for (p=buffer, idx=0; list[idx]; idx++)
420 0 : if (is_app_allowed (list[idx]))
421 0 : p = stpcpy (stpcpy (p, list[idx]), ":\n");
422 0 : *p = 0;
423 :
424 0 : return buffer;
425 : }
426 :
427 :
428 : /* Deallocate the application. */
429 : static void
430 0 : deallocate_app (app_t app)
431 : {
432 0 : if (app->fnc.deinit)
433 : {
434 0 : app->fnc.deinit (app);
435 0 : app->fnc.deinit = NULL;
436 : }
437 :
438 0 : xfree (app->serialno);
439 0 : xfree (app);
440 0 : }
441 :
442 : /* Free the resources associated with the application APP. APP is
443 : allowed to be NULL in which case this is a no-op. Note that we are
444 : using reference counting to track the users of the application and
445 : actually deferring the deallocation to allow for a later reuse by
446 : a new connection. */
447 : void
448 0 : release_application (app_t app)
449 : {
450 : int slot;
451 :
452 0 : if (!app)
453 0 : return;
454 :
455 0 : if (!app->ref_count)
456 0 : log_bug ("trying to release an already released context\n");
457 0 : if (--app->ref_count)
458 0 : return;
459 :
460 : /* Move the reference to the application in the lock table. */
461 0 : slot = app->slot;
462 : /* FIXME: We are ignoring any error value. */
463 0 : lock_reader (slot, NULL);
464 0 : if (lock_table[slot].app != app)
465 : {
466 0 : unlock_reader (slot);
467 0 : log_bug ("app mismatch %p/%p\n", app, lock_table[slot].app);
468 : deallocate_app (app);
469 : return;
470 : }
471 :
472 : /* We don't deallocate app here. Instead, we keep it. This is
473 : useful so that a card does not get reset even if only one session
474 : is using the card - this way the PIN cache and other cached data
475 : are preserved. */
476 0 : unlock_reader (slot);
477 : }
478 :
479 :
480 :
481 : /* The serial number may need some cosmetics. Do it here. This
482 : function shall only be called once after a new serial number has
483 : been put into APP->serialno.
484 :
485 : Prefixes we use:
486 :
487 : FF 00 00 = For serial numbers starting with an FF
488 : FF 01 00 = Some german p15 cards return an empty serial number so the
489 : serial number from the EF(TokenInfo) is used instead.
490 : FF 7F 00 = No serialno.
491 :
492 : All other serial number not starting with FF are used as they are.
493 : */
494 : gpg_error_t
495 0 : app_munge_serialno (app_t app)
496 : {
497 0 : if (app->serialnolen && app->serialno[0] == 0xff)
498 0 : {
499 : /* The serial number starts with our special prefix. This
500 : requires that we put our default prefix "FF0000" in front. */
501 0 : unsigned char *p = xtrymalloc (app->serialnolen + 3);
502 0 : if (!p)
503 0 : return gpg_error_from_syserror ();
504 0 : memcpy (p, "\xff\0", 3);
505 0 : memcpy (p+3, app->serialno, app->serialnolen);
506 0 : app->serialnolen += 3;
507 0 : xfree (app->serialno);
508 0 : app->serialno = p;
509 : }
510 0 : else if (!app->serialnolen)
511 : {
512 0 : unsigned char *p = xtrymalloc (3);
513 0 : if (!p)
514 0 : return gpg_error_from_syserror ();
515 0 : memcpy (p, "\xff\x7f", 3);
516 0 : app->serialnolen = 3;
517 0 : xfree (app->serialno);
518 0 : app->serialno = p;
519 : }
520 0 : return 0;
521 : }
522 :
523 :
524 :
525 : /* Retrieve the serial number and the time of the last update of the
526 : card. The serial number is returned as a malloced string (hex
527 : encoded) in SERIAL and the time of update is returned in STAMP. If
528 : no update time is available the returned value is 0. Caller must
529 : free SERIAL unless the function returns an error. If STAMP is not
530 : of interest, NULL may be passed. */
531 : gpg_error_t
532 0 : app_get_serial_and_stamp (app_t app, char **serial, time_t *stamp)
533 : {
534 : char *buf;
535 :
536 0 : if (!app || !serial)
537 0 : return gpg_error (GPG_ERR_INV_VALUE);
538 :
539 0 : *serial = NULL;
540 0 : if (stamp)
541 0 : *stamp = 0; /* not available */
542 :
543 0 : if (!app->serialnolen)
544 0 : buf = xtrystrdup ("FF7F00");
545 : else
546 0 : buf = bin2hex (app->serialno, app->serialnolen, NULL);
547 0 : if (!buf)
548 0 : return gpg_error_from_syserror ();
549 :
550 0 : *serial = buf;
551 0 : return 0;
552 : }
553 :
554 :
555 : /* Write out the application specifig status lines for the LEARN
556 : command. */
557 : gpg_error_t
558 0 : app_write_learn_status (app_t app, ctrl_t ctrl, unsigned int flags)
559 : {
560 : gpg_error_t err;
561 :
562 0 : if (!app)
563 0 : return gpg_error (GPG_ERR_INV_VALUE);
564 0 : if (!app->ref_count)
565 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
566 0 : if (!app->fnc.learn_status)
567 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
568 :
569 : /* We do not send APPTYPE if only keypairinfo is requested. */
570 0 : if (app->apptype && !(flags & 1))
571 0 : send_status_info (ctrl, "APPTYPE",
572 : app->apptype, strlen (app->apptype), NULL, 0);
573 0 : err = lock_reader (app->slot, ctrl);
574 0 : if (err)
575 0 : return err;
576 0 : err = app->fnc.learn_status (app, ctrl, flags);
577 0 : unlock_reader (app->slot);
578 0 : return err;
579 : }
580 :
581 :
582 : /* Read the certificate with id CERTID (as returned by learn_status in
583 : the CERTINFO status lines) and return it in the freshly allocated
584 : buffer put into CERT and the length of the certificate put into
585 : CERTLEN. */
586 : gpg_error_t
587 0 : app_readcert (app_t app, const char *certid,
588 : unsigned char **cert, size_t *certlen)
589 : {
590 : gpg_error_t err;
591 :
592 0 : if (!app)
593 0 : return gpg_error (GPG_ERR_INV_VALUE);
594 0 : if (!app->ref_count)
595 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
596 0 : if (!app->fnc.readcert)
597 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
598 0 : err = lock_reader (app->slot, NULL/* FIXME*/);
599 0 : if (err)
600 0 : return err;
601 0 : err = app->fnc.readcert (app, certid, cert, certlen);
602 0 : unlock_reader (app->slot);
603 0 : return err;
604 : }
605 :
606 :
607 : /* Read the key with ID KEYID. On success a canonical encoded
608 : S-expression with the public key will get stored at PK and its
609 : length (for assertions) at PKLEN; the caller must release that
610 : buffer. On error NULL will be stored at PK and PKLEN and an error
611 : code returned.
612 :
613 : This function might not be supported by all applications. */
614 : gpg_error_t
615 0 : app_readkey (app_t app, int advanced, const char *keyid,
616 : unsigned char **pk, size_t *pklen)
617 : {
618 : gpg_error_t err;
619 :
620 0 : if (pk)
621 0 : *pk = NULL;
622 0 : if (pklen)
623 0 : *pklen = 0;
624 :
625 0 : if (!app || !keyid || !pk || !pklen)
626 0 : return gpg_error (GPG_ERR_INV_VALUE);
627 0 : if (!app->ref_count)
628 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
629 0 : if (!app->fnc.readkey)
630 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
631 0 : err = lock_reader (app->slot, NULL /*FIXME*/);
632 0 : if (err)
633 0 : return err;
634 0 : err= app->fnc.readkey (app, advanced, keyid, pk, pklen);
635 0 : unlock_reader (app->slot);
636 0 : return err;
637 : }
638 :
639 :
640 : /* Perform a GETATTR operation. */
641 : gpg_error_t
642 0 : app_getattr (app_t app, ctrl_t ctrl, const char *name)
643 : {
644 : gpg_error_t err;
645 :
646 0 : if (!app || !name || !*name)
647 0 : return gpg_error (GPG_ERR_INV_VALUE);
648 0 : if (!app->ref_count)
649 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
650 :
651 0 : if (app->apptype && name && !strcmp (name, "APPTYPE"))
652 : {
653 0 : send_status_info (ctrl, "APPTYPE",
654 : app->apptype, strlen (app->apptype), NULL, 0);
655 0 : return 0;
656 : }
657 0 : if (name && !strcmp (name, "SERIALNO"))
658 : {
659 : char *serial;
660 : time_t stamp;
661 : int rc;
662 :
663 0 : rc = app_get_serial_and_stamp (app, &serial, &stamp);
664 0 : if (rc)
665 0 : return rc;
666 0 : send_status_info (ctrl, "SERIALNO", serial, strlen (serial), NULL, 0);
667 0 : xfree (serial);
668 0 : return 0;
669 : }
670 :
671 0 : if (!app->fnc.getattr)
672 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
673 0 : err = lock_reader (app->slot, ctrl);
674 0 : if (err)
675 0 : return err;
676 0 : err = app->fnc.getattr (app, ctrl, name);
677 0 : unlock_reader (app->slot);
678 0 : return err;
679 : }
680 :
681 : /* Perform a SETATTR operation. */
682 : gpg_error_t
683 0 : app_setattr (app_t app, const char *name,
684 : gpg_error_t (*pincb)(void*, const char *, char **),
685 : void *pincb_arg,
686 : const unsigned char *value, size_t valuelen)
687 : {
688 : gpg_error_t err;
689 :
690 0 : if (!app || !name || !*name || !value)
691 0 : return gpg_error (GPG_ERR_INV_VALUE);
692 0 : if (!app->ref_count)
693 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
694 0 : if (!app->fnc.setattr)
695 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
696 0 : err = lock_reader (app->slot, NULL /*FIXME*/);
697 0 : if (err)
698 0 : return err;
699 0 : err = app->fnc.setattr (app, name, pincb, pincb_arg, value, valuelen);
700 0 : unlock_reader (app->slot);
701 0 : return err;
702 : }
703 :
704 : /* Create the signature and return the allocated result in OUTDATA.
705 : If a PIN is required the PINCB will be used to ask for the PIN; it
706 : should return the PIN in an allocated buffer and put it into PIN. */
707 : gpg_error_t
708 0 : app_sign (app_t app, const char *keyidstr, int hashalgo,
709 : gpg_error_t (*pincb)(void*, const char *, char **),
710 : void *pincb_arg,
711 : const void *indata, size_t indatalen,
712 : unsigned char **outdata, size_t *outdatalen )
713 : {
714 : gpg_error_t err;
715 :
716 0 : if (!app || !indata || !indatalen || !outdata || !outdatalen || !pincb)
717 0 : return gpg_error (GPG_ERR_INV_VALUE);
718 0 : if (!app->ref_count)
719 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
720 0 : if (!app->fnc.sign)
721 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
722 0 : err = lock_reader (app->slot, NULL /*FIXME*/);
723 0 : if (err)
724 0 : return err;
725 0 : err = app->fnc.sign (app, keyidstr, hashalgo,
726 : pincb, pincb_arg,
727 : indata, indatalen,
728 : outdata, outdatalen);
729 0 : unlock_reader (app->slot);
730 0 : if (opt.verbose)
731 0 : log_info ("operation sign result: %s\n", gpg_strerror (err));
732 0 : return err;
733 : }
734 :
735 : /* Create the signature using the INTERNAL AUTHENTICATE command and
736 : return the allocated result in OUTDATA. If a PIN is required the
737 : PINCB will be used to ask for the PIN; it should return the PIN in
738 : an allocated buffer and put it into PIN. */
739 : gpg_error_t
740 0 : app_auth (app_t app, const char *keyidstr,
741 : gpg_error_t (*pincb)(void*, const char *, char **),
742 : void *pincb_arg,
743 : const void *indata, size_t indatalen,
744 : unsigned char **outdata, size_t *outdatalen )
745 : {
746 : gpg_error_t err;
747 :
748 0 : if (!app || !indata || !indatalen || !outdata || !outdatalen || !pincb)
749 0 : return gpg_error (GPG_ERR_INV_VALUE);
750 0 : if (!app->ref_count)
751 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
752 0 : if (!app->fnc.auth)
753 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
754 0 : err = lock_reader (app->slot, NULL /*FIXME*/);
755 0 : if (err)
756 0 : return err;
757 0 : err = app->fnc.auth (app, keyidstr,
758 : pincb, pincb_arg,
759 : indata, indatalen,
760 : outdata, outdatalen);
761 0 : unlock_reader (app->slot);
762 0 : if (opt.verbose)
763 0 : log_info ("operation auth result: %s\n", gpg_strerror (err));
764 0 : return err;
765 : }
766 :
767 :
768 : /* Decrypt the data in INDATA and return the allocated result in OUTDATA.
769 : If a PIN is required the PINCB will be used to ask for the PIN; it
770 : should return the PIN in an allocated buffer and put it into PIN. */
771 : gpg_error_t
772 0 : app_decipher (app_t app, const char *keyidstr,
773 : gpg_error_t (*pincb)(void*, const char *, char **),
774 : void *pincb_arg,
775 : const void *indata, size_t indatalen,
776 : unsigned char **outdata, size_t *outdatalen,
777 : unsigned int *r_info)
778 : {
779 : gpg_error_t err;
780 :
781 0 : *r_info = 0;
782 :
783 0 : if (!app || !indata || !indatalen || !outdata || !outdatalen || !pincb)
784 0 : return gpg_error (GPG_ERR_INV_VALUE);
785 0 : if (!app->ref_count)
786 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
787 0 : if (!app->fnc.decipher)
788 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
789 0 : err = lock_reader (app->slot, NULL /*FIXME*/);
790 0 : if (err)
791 0 : return err;
792 0 : err = app->fnc.decipher (app, keyidstr,
793 : pincb, pincb_arg,
794 : indata, indatalen,
795 : outdata, outdatalen,
796 : r_info);
797 0 : unlock_reader (app->slot);
798 0 : if (opt.verbose)
799 0 : log_info ("operation decipher result: %s\n", gpg_strerror (err));
800 0 : return err;
801 : }
802 :
803 :
804 : /* Perform the WRITECERT operation. */
805 : gpg_error_t
806 0 : app_writecert (app_t app, ctrl_t ctrl,
807 : const char *certidstr,
808 : gpg_error_t (*pincb)(void*, const char *, char **),
809 : void *pincb_arg,
810 : const unsigned char *data, size_t datalen)
811 : {
812 : gpg_error_t err;
813 :
814 0 : if (!app || !certidstr || !*certidstr || !pincb)
815 0 : return gpg_error (GPG_ERR_INV_VALUE);
816 0 : if (!app->ref_count)
817 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
818 0 : if (!app->fnc.writecert)
819 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
820 0 : err = lock_reader (app->slot, ctrl);
821 0 : if (err)
822 0 : return err;
823 0 : err = app->fnc.writecert (app, ctrl, certidstr,
824 : pincb, pincb_arg, data, datalen);
825 0 : unlock_reader (app->slot);
826 0 : if (opt.verbose)
827 0 : log_info ("operation writecert result: %s\n", gpg_strerror (err));
828 0 : return err;
829 : }
830 :
831 :
832 : /* Perform the WRITEKEY operation. */
833 : gpg_error_t
834 0 : app_writekey (app_t app, ctrl_t ctrl,
835 : const char *keyidstr, unsigned int flags,
836 : gpg_error_t (*pincb)(void*, const char *, char **),
837 : void *pincb_arg,
838 : const unsigned char *keydata, size_t keydatalen)
839 : {
840 : gpg_error_t err;
841 :
842 0 : if (!app || !keyidstr || !*keyidstr || !pincb)
843 0 : return gpg_error (GPG_ERR_INV_VALUE);
844 0 : if (!app->ref_count)
845 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
846 0 : if (!app->fnc.writekey)
847 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
848 0 : err = lock_reader (app->slot, ctrl);
849 0 : if (err)
850 0 : return err;
851 0 : err = app->fnc.writekey (app, ctrl, keyidstr, flags,
852 : pincb, pincb_arg, keydata, keydatalen);
853 0 : unlock_reader (app->slot);
854 0 : if (opt.verbose)
855 0 : log_info ("operation writekey result: %s\n", gpg_strerror (err));
856 0 : return err;
857 : }
858 :
859 :
860 : /* Perform a SETATTR operation. */
861 : gpg_error_t
862 0 : app_genkey (app_t app, ctrl_t ctrl, const char *keynostr, unsigned int flags,
863 : time_t createtime,
864 : gpg_error_t (*pincb)(void*, const char *, char **),
865 : void *pincb_arg)
866 : {
867 : gpg_error_t err;
868 :
869 0 : if (!app || !keynostr || !*keynostr || !pincb)
870 0 : return gpg_error (GPG_ERR_INV_VALUE);
871 0 : if (!app->ref_count)
872 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
873 0 : if (!app->fnc.genkey)
874 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
875 0 : err = lock_reader (app->slot, ctrl);
876 0 : if (err)
877 0 : return err;
878 0 : err = app->fnc.genkey (app, ctrl, keynostr, flags,
879 : createtime, pincb, pincb_arg);
880 0 : unlock_reader (app->slot);
881 0 : if (opt.verbose)
882 0 : log_info ("operation genkey result: %s\n", gpg_strerror (err));
883 0 : return err;
884 : }
885 :
886 :
887 : /* Perform a GET CHALLENGE operation. This function is special as it
888 : directly accesses the card without any application specific
889 : wrapper. */
890 : gpg_error_t
891 0 : app_get_challenge (app_t app, size_t nbytes, unsigned char *buffer)
892 : {
893 : gpg_error_t err;
894 :
895 0 : if (!app || !nbytes || !buffer)
896 0 : return gpg_error (GPG_ERR_INV_VALUE);
897 0 : if (!app->ref_count)
898 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
899 0 : err = lock_reader (app->slot, NULL /*FIXME*/);
900 0 : if (err)
901 0 : return err;
902 0 : err = iso7816_get_challenge (app->slot, nbytes, buffer);
903 0 : unlock_reader (app->slot);
904 0 : return err;
905 : }
906 :
907 :
908 :
909 : /* Perform a CHANGE REFERENCE DATA or RESET RETRY COUNTER operation. */
910 : gpg_error_t
911 0 : app_change_pin (app_t app, ctrl_t ctrl, const char *chvnostr, int reset_mode,
912 : gpg_error_t (*pincb)(void*, const char *, char **),
913 : void *pincb_arg)
914 : {
915 : gpg_error_t err;
916 :
917 0 : if (!app || !chvnostr || !*chvnostr || !pincb)
918 0 : return gpg_error (GPG_ERR_INV_VALUE);
919 0 : if (!app->ref_count)
920 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
921 0 : if (!app->fnc.change_pin)
922 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
923 0 : err = lock_reader (app->slot, ctrl);
924 0 : if (err)
925 0 : return err;
926 0 : err = app->fnc.change_pin (app, ctrl, chvnostr, reset_mode,
927 : pincb, pincb_arg);
928 0 : unlock_reader (app->slot);
929 0 : if (opt.verbose)
930 0 : log_info ("operation change_pin result: %s\n", gpg_strerror (err));
931 0 : return err;
932 : }
933 :
934 :
935 : /* Perform a VERIFY operation without doing anything lese. This may
936 : be used to initialze a the PIN cache for long lasting other
937 : operations. Its use is highly application dependent. */
938 : gpg_error_t
939 0 : app_check_pin (app_t app, const char *keyidstr,
940 : gpg_error_t (*pincb)(void*, const char *, char **),
941 : void *pincb_arg)
942 : {
943 : gpg_error_t err;
944 :
945 0 : if (!app || !keyidstr || !*keyidstr || !pincb)
946 0 : return gpg_error (GPG_ERR_INV_VALUE);
947 0 : if (!app->ref_count)
948 0 : return gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
949 0 : if (!app->fnc.check_pin)
950 0 : return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
951 0 : err = lock_reader (app->slot, NULL /*FIXME*/);
952 0 : if (err)
953 0 : return err;
954 0 : err = app->fnc.check_pin (app, keyidstr, pincb, pincb_arg);
955 0 : unlock_reader (app->slot);
956 0 : if (opt.verbose)
957 0 : log_info ("operation check_pin result: %s\n", gpg_strerror (err));
958 0 : return err;
959 : }
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