1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 #include "ask-password-api.h"
9 #include "memory-util.h"
11 #include "openssl-util.h"
13 #include "pkcs11-util.h"
14 #include "random-util.h"
15 #include "string-util.h"
18 bool pkcs11_uri_valid(const char *uri
) {
21 /* A very superficial checker for RFC7512 PKCS#11 URI syntax */
26 p
= startswith(uri
, "pkcs11:");
33 if (!in_charset(p
, ALPHANUMERICAL
"-_?;&%="))
41 int uri_from_string(const char *p
, P11KitUri
**ret
) {
42 _cleanup_(p11_kit_uri_freep
) P11KitUri
*uri
= NULL
;
47 uri
= p11_kit_uri_new();
51 if (p11_kit_uri_parse(p
, P11_KIT_URI_FOR_ANY
, uri
) != P11_KIT_URI_OK
)
58 P11KitUri
*uri_from_module_info(const CK_INFO
*info
) {
63 uri
= p11_kit_uri_new();
67 *p11_kit_uri_get_module_info(uri
) = *info
;
71 P11KitUri
*uri_from_slot_info(const CK_SLOT_INFO
*slot_info
) {
76 uri
= p11_kit_uri_new();
80 *p11_kit_uri_get_slot_info(uri
) = *slot_info
;
84 P11KitUri
*uri_from_token_info(const CK_TOKEN_INFO
*token_info
) {
89 uri
= p11_kit_uri_new();
93 *p11_kit_uri_get_token_info(uri
) = *token_info
;
97 CK_RV
pkcs11_get_slot_list_malloc(
99 CK_SLOT_ID
**ret_slotids
,
100 CK_ULONG
*ret_n_slotids
) {
106 assert(ret_n_slotids
);
108 for (unsigned tries
= 0; tries
< 16; tries
++) {
109 _cleanup_free_ CK_SLOT_ID
*slotids
= NULL
;
110 CK_ULONG n_slotids
= 0;
112 rv
= m
->C_GetSlotList(0, NULL
, &n_slotids
);
115 if (n_slotids
== 0) {
121 slotids
= new(CK_SLOT_ID
, n_slotids
);
123 return CKR_HOST_MEMORY
;
125 rv
= m
->C_GetSlotList(0, slotids
, &n_slotids
);
127 *ret_slotids
= TAKE_PTR(slotids
);
128 *ret_n_slotids
= n_slotids
;
132 if (rv
!= CKR_BUFFER_TOO_SMALL
)
135 /* Hu? Maybe somebody plugged something in and things changed? Let's try again */
138 return CKR_BUFFER_TOO_SMALL
;
141 char *pkcs11_token_label(const CK_TOKEN_INFO
*token_info
) {
144 /* The label is not NUL terminated and likely padded with spaces, let's make a copy here, so that we
146 t
= strndup((char*) token_info
->label
, sizeof(token_info
->label
));
154 int pkcs11_token_login(
156 CK_SESSION_HANDLE session
,
158 const CK_TOKEN_INFO
*token_info
,
159 const char *friendly_name
,
160 const char *icon_name
,
163 char **ret_used_pin
) {
165 _cleanup_free_
char *token_uri_string
= NULL
, *token_uri_escaped
= NULL
, *id
= NULL
, *token_label
= NULL
;
166 _cleanup_(p11_kit_uri_freep
) P11KitUri
*token_uri
= NULL
;
167 CK_TOKEN_INFO updated_token_info
;
175 token_label
= pkcs11_token_label(token_info
);
179 token_uri
= uri_from_token_info(token_info
);
183 uri_result
= p11_kit_uri_format(token_uri
, P11_KIT_URI_FOR_ANY
, &token_uri_string
);
184 if (uri_result
!= P11_KIT_URI_OK
)
185 return log_warning_errno(SYNTHETIC_ERRNO(EAGAIN
), "Failed to format slot URI: %s", p11_kit_uri_message(uri_result
));
187 if (FLAGS_SET(token_info
->flags
, CKF_PROTECTED_AUTHENTICATION_PATH
)) {
188 rv
= m
->C_Login(session
, CKU_USER
, NULL
, 0);
190 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
191 "Failed to log into security token '%s': %s", token_label
, p11_kit_strerror(rv
));
193 log_info("Successfully logged into security token '%s' via protected authentication path.", token_label
);
194 *ret_used_pin
= NULL
;
198 if (!FLAGS_SET(token_info
->flags
, CKF_LOGIN_REQUIRED
)) {
199 log_info("No login into security token '%s' required.", token_label
);
200 *ret_used_pin
= NULL
;
204 token_uri_escaped
= cescape(token_uri_string
);
205 if (!token_uri_escaped
)
208 id
= strjoin("pkcs11:", token_uri_escaped
);
212 for (unsigned tries
= 0; tries
< 3; tries
++) {
213 _cleanup_strv_free_erase_
char **passwords
= NULL
;
214 _cleanup_free_
char *text
= NULL
;
217 if (FLAGS_SET(token_info
->flags
, CKF_USER_PIN_FINAL_TRY
))
219 "Please enter correct PIN for security token '%s' in order to unlock %s (final try):",
220 token_label
, friendly_name
);
221 else if (FLAGS_SET(token_info
->flags
, CKF_USER_PIN_COUNT_LOW
))
223 "PIN has been entered incorrectly previously, please enter correct PIN for security token '%s' in order to unlock %s:",
224 token_label
, friendly_name
);
227 "Please enter PIN for security token '%s' in order to unlock %s:",
228 token_label
, friendly_name
);
231 "Please enter PIN for security token '%s' in order to unlock %s (try #%u):",
232 token_label
, friendly_name
, tries
+1);
238 passwords
= strv_new(e
);
243 if (unsetenv("PIN") < 0)
244 return log_error_errno(errno
, "Failed to unset $PIN: %m");
246 /* We never cache PINs, simply because it's fatal if we use wrong PINs, since usually there are only 3 tries */
247 r
= ask_password_auto(text
, icon_name
, id
, keyname
, until
, 0, &passwords
);
249 return log_error_errno(r
, "Failed to query PIN for security token '%s': %m", token_label
);
252 STRV_FOREACH(i
, passwords
) {
253 rv
= m
->C_Login(session
, CKU_USER
, (CK_UTF8CHAR
*) *i
, strlen(*i
));
266 log_info("Successfully logged into security token '%s'.", token_label
);
269 if (rv
== CKR_PIN_LOCKED
)
270 return log_error_errno(SYNTHETIC_ERRNO(EPERM
),
271 "PIN has been locked, please reset PIN of security token '%s'.", token_label
);
272 if (!IN_SET(rv
, CKR_PIN_INCORRECT
, CKR_PIN_LEN_RANGE
))
273 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
274 "Failed to log into security token '%s': %s", token_label
, p11_kit_strerror(rv
));
276 /* Referesh the token info, so that we can prompt knowing the new flags if they changed. */
277 rv
= m
->C_GetTokenInfo(slotid
, &updated_token_info
);
279 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
280 "Failed to acquire updated security token information for slot %lu: %s",
281 slotid
, p11_kit_strerror(rv
));
283 token_info
= &updated_token_info
;
284 log_notice("PIN for token '%s' is incorrect, please try again.", token_label
);
288 return log_error_errno(SYNTHETIC_ERRNO(EPERM
), "Too many attempts to log into token '%s'.", token_label
);
291 int pkcs11_token_find_x509_certificate(
293 CK_SESSION_HANDLE session
,
294 P11KitUri
*search_uri
,
295 CK_OBJECT_HANDLE
*ret_object
) {
297 bool found_class
= false, found_certificate_type
= false;
298 _cleanup_free_ CK_ATTRIBUTE
*attributes_buffer
= NULL
;
299 CK_ULONG n_attributes
, a
, n_objects
;
300 CK_ATTRIBUTE
*attributes
= NULL
;
301 CK_OBJECT_HANDLE objects
[2];
308 attributes
= p11_kit_uri_get_attributes(search_uri
, &n_attributes
);
309 for (a
= 0; a
< n_attributes
; a
++) {
311 /* We use the URI's included match attributes, but make them more strict. This allows users
312 * to specify a token URL instead of an object URL and the right thing should happen if
313 * there's only one suitable key on the token. */
315 switch (attributes
[a
].type
) {
320 if (attributes
[a
].ulValueLen
!= sizeof(c
))
321 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
), "Invalid PKCS#11 CKA_CLASS attribute size.");
323 memcpy(&c
, attributes
[a
].pValue
, sizeof(c
));
324 if (c
!= CKO_CERTIFICATE
)
325 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
), "Selected PKCS#11 object is not an X.509 certificate, refusing.");
331 case CKA_CERTIFICATE_TYPE
: {
332 CK_CERTIFICATE_TYPE t
;
334 if (attributes
[a
].ulValueLen
!= sizeof(t
))
335 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
), "Invalid PKCS#11 CKA_CERTIFICATE_TYPE attribute size.");
337 memcpy(&t
, attributes
[a
].pValue
, sizeof(t
));
339 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
), "Selected PKCS#11 object is not an X.509 certificate, refusing.");
341 found_certificate_type
= true;
346 if (!found_class
|| !found_certificate_type
) {
347 /* Hmm, let's slightly extend the attribute list we search for */
349 attributes_buffer
= new(CK_ATTRIBUTE
, n_attributes
+ !found_class
+ !found_certificate_type
);
350 if (!attributes_buffer
)
353 memcpy(attributes_buffer
, attributes
, sizeof(CK_ATTRIBUTE
) * n_attributes
);
356 static const CK_OBJECT_CLASS
class = CKO_CERTIFICATE
;
358 attributes_buffer
[n_attributes
++] = (CK_ATTRIBUTE
) {
360 .pValue
= (CK_OBJECT_CLASS
*) &class,
361 .ulValueLen
= sizeof(class),
365 if (!found_certificate_type
) {
366 static const CK_CERTIFICATE_TYPE type
= CKC_X_509
;
368 attributes_buffer
[n_attributes
++] = (CK_ATTRIBUTE
) {
369 .type
= CKA_CERTIFICATE_TYPE
,
370 .pValue
= (CK_CERTIFICATE_TYPE
*) &type
,
371 .ulValueLen
= sizeof(type
),
375 attributes
= attributes_buffer
;
378 rv
= m
->C_FindObjectsInit(session
, attributes
, n_attributes
);
380 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
381 "Failed to initialize object find call: %s", p11_kit_strerror(rv
));
383 rv
= m
->C_FindObjects(session
, objects
, ELEMENTSOF(objects
), &n_objects
);
384 rv2
= m
->C_FindObjectsFinal(session
);
386 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
387 "Failed to find objects: %s", p11_kit_strerror(rv
));
389 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
390 "Failed to finalize object find call: %s", p11_kit_strerror(rv
));
392 return log_error_errno(SYNTHETIC_ERRNO(ENOENT
),
393 "Failed to find selected X509 certificate on token.");
395 return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ
),
396 "Configured URI matches multiple certificates, refusing.");
398 *ret_object
= objects
[0];
403 int pkcs11_token_read_x509_certificate(
405 CK_SESSION_HANDLE session
,
406 CK_OBJECT_HANDLE object
,
409 _cleanup_free_
void *buffer
= NULL
;
410 _cleanup_free_
char *t
= NULL
;
411 CK_ATTRIBUTE attribute
= {
415 _cleanup_(X509_freep
) X509
*x509
= NULL
;
416 X509_NAME
*name
= NULL
;
417 const unsigned char *p
;
419 rv
= m
->C_GetAttributeValue(session
, object
, &attribute
, 1);
421 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
422 "Failed to read X.509 certificate size off token: %s", p11_kit_strerror(rv
));
424 buffer
= malloc(attribute
.ulValueLen
);
428 attribute
.pValue
= buffer
;
430 rv
= m
->C_GetAttributeValue(session
, object
, &attribute
, 1);
432 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
433 "Failed to read X.509 certificate data off token: %s", p11_kit_strerror(rv
));
435 p
= attribute
.pValue
;
436 x509
= d2i_X509(NULL
, &p
, attribute
.ulValueLen
);
438 return log_error_errno(SYNTHETIC_ERRNO(EBADMSG
), "Failed parse X.509 certificate.");
440 name
= X509_get_subject_name(x509
);
442 return log_error_errno(SYNTHETIC_ERRNO(EBADMSG
), "Failed to acquire X.509 subject name.");
444 t
= X509_NAME_oneline(name
, NULL
, 0);
446 return log_error_errno(SYNTHETIC_ERRNO(EIO
), "Failed to format X.509 subject name as string.");
448 log_debug("Using X.509 certificate issued for '%s'.", t
);
450 *ret_cert
= TAKE_PTR(x509
);
455 int pkcs11_token_find_private_key(
457 CK_SESSION_HANDLE session
,
458 P11KitUri
*search_uri
,
459 CK_OBJECT_HANDLE
*ret_object
) {
461 bool found_decrypt
= false, found_class
= false, found_key_type
= false;
462 _cleanup_free_ CK_ATTRIBUTE
*attributes_buffer
= NULL
;
463 CK_ULONG n_attributes
, a
, n_objects
;
464 CK_ATTRIBUTE
*attributes
= NULL
;
465 CK_OBJECT_HANDLE objects
[2];
472 attributes
= p11_kit_uri_get_attributes(search_uri
, &n_attributes
);
473 for (a
= 0; a
< n_attributes
; a
++) {
475 /* We use the URI's included match attributes, but make them more strict. This allows users
476 * to specify a token URL instead of an object URL and the right thing should happen if
477 * there's only one suitable key on the token. */
479 switch (attributes
[a
].type
) {
484 if (attributes
[a
].ulValueLen
!= sizeof(c
))
485 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
), "Invalid PKCS#11 CKA_CLASS attribute size.");
487 memcpy(&c
, attributes
[a
].pValue
, sizeof(c
));
488 if (c
!= CKO_PRIVATE_KEY
)
489 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
),
490 "Selected PKCS#11 object is not a private key, refusing.");
499 if (attributes
[a
].ulValueLen
!= sizeof(b
))
500 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
), "Invalid PKCS#11 CKA_DECRYPT attribute size.");
502 memcpy(&b
, attributes
[a
].pValue
, sizeof(b
));
504 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
),
505 "Selected PKCS#11 object is not suitable for decryption, refusing.");
507 found_decrypt
= true;
514 if (attributes
[a
].ulValueLen
!= sizeof(t
))
515 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
), "Invalid PKCS#11 CKA_KEY_TYPE attribute size.");
517 memcpy(&t
, attributes
[a
].pValue
, sizeof(t
));
519 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
), "Selected PKCS#11 object is not an RSA key, refusing.");
521 found_key_type
= true;
526 if (!found_decrypt
|| !found_class
|| !found_key_type
) {
527 /* Hmm, let's slightly extend the attribute list we search for */
529 attributes_buffer
= new(CK_ATTRIBUTE
, n_attributes
+ !found_decrypt
+ !found_class
+ !found_key_type
);
530 if (!attributes_buffer
)
533 memcpy(attributes_buffer
, attributes
, sizeof(CK_ATTRIBUTE
) * n_attributes
);
535 if (!found_decrypt
) {
536 static const CK_BBOOL yes
= true;
538 attributes_buffer
[n_attributes
++] = (CK_ATTRIBUTE
) {
540 .pValue
= (CK_BBOOL
*) &yes
,
541 .ulValueLen
= sizeof(yes
),
546 static const CK_OBJECT_CLASS
class = CKO_PRIVATE_KEY
;
548 attributes_buffer
[n_attributes
++] = (CK_ATTRIBUTE
) {
550 .pValue
= (CK_OBJECT_CLASS
*) &class,
551 .ulValueLen
= sizeof(class),
555 if (!found_key_type
) {
556 static const CK_KEY_TYPE type
= CKK_RSA
;
558 attributes_buffer
[n_attributes
++] = (CK_ATTRIBUTE
) {
559 .type
= CKA_KEY_TYPE
,
560 .pValue
= (CK_KEY_TYPE
*) &type
,
561 .ulValueLen
= sizeof(type
),
565 attributes
= attributes_buffer
;
568 rv
= m
->C_FindObjectsInit(session
, attributes
, n_attributes
);
570 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
571 "Failed to initialize object find call: %s", p11_kit_strerror(rv
));
573 rv
= m
->C_FindObjects(session
, objects
, ELEMENTSOF(objects
), &n_objects
);
574 rv2
= m
->C_FindObjectsFinal(session
);
576 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
577 "Failed to find objects: %s", p11_kit_strerror(rv
));
579 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
580 "Failed to finalize object find call: %s", p11_kit_strerror(rv
));
582 return log_error_errno(SYNTHETIC_ERRNO(ENOENT
),
583 "Failed to find selected private key suitable for decryption on token.");
585 return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ
),
586 "Configured private key URI matches multiple keys, refusing.");
588 *ret_object
= objects
[0];
592 int pkcs11_token_decrypt_data(
594 CK_SESSION_HANDLE session
,
595 CK_OBJECT_HANDLE object
,
596 const void *encrypted_data
,
597 size_t encrypted_data_size
,
598 void **ret_decrypted_data
,
599 size_t *ret_decrypted_data_size
) {
601 static const CK_MECHANISM mechanism
= {
602 .mechanism
= CKM_RSA_PKCS
604 _cleanup_(erase_and_freep
) CK_BYTE
*dbuffer
= NULL
;
605 CK_ULONG dbuffer_size
= 0;
609 assert(encrypted_data
);
610 assert(encrypted_data_size
> 0);
611 assert(ret_decrypted_data
);
612 assert(ret_decrypted_data_size
);
614 rv
= m
->C_DecryptInit(session
, (CK_MECHANISM
*) &mechanism
, object
);
616 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
617 "Failed to initialize decryption on security token: %s", p11_kit_strerror(rv
));
619 dbuffer_size
= encrypted_data_size
; /* Start with something reasonable */
620 dbuffer
= malloc(dbuffer_size
);
624 rv
= m
->C_Decrypt(session
, (CK_BYTE
*) encrypted_data
, encrypted_data_size
, dbuffer
, &dbuffer_size
);
625 if (rv
== CKR_BUFFER_TOO_SMALL
) {
626 erase_and_free(dbuffer
);
628 dbuffer
= malloc(dbuffer_size
);
632 rv
= m
->C_Decrypt(session
, (CK_BYTE
*) encrypted_data
, encrypted_data_size
, dbuffer
, &dbuffer_size
);
635 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
636 "Failed to decrypt key on security token: %s", p11_kit_strerror(rv
));
638 log_info("Successfully decrypted key with security token.");
640 *ret_decrypted_data
= TAKE_PTR(dbuffer
);
641 *ret_decrypted_data_size
= dbuffer_size
;
645 int pkcs11_token_acquire_rng(
647 CK_SESSION_HANDLE session
) {
649 _cleanup_free_
void *buffer
= NULL
;
650 _cleanup_close_
int fd
= -1;
657 /* While we are at it, let's read some RNG data from the PKCS#11 token and pass it to the kernel
658 * random pool. This should be cheap if we are talking to the device already. Note that we don't
659 * credit any entropy, since we don't know about the quality of the pkcs#11 token's RNG. Why bother
660 * at all? There are two sides to the argument whether to generate private keys on tokens or on the
661 * host. By crediting some data from the token RNG to the host's pool we at least can say that any
662 * key generated from it is at least as good as both sources individually. */
664 rps
= random_pool_size();
666 buffer
= malloc(rps
);
670 rv
= m
->C_GenerateRandom(session
, buffer
, rps
);
672 return log_debug_errno(SYNTHETIC_ERRNO(EOPNOTSUPP
),
673 "Failed to generate RNG data on security token: %s", p11_kit_strerror(rv
));
675 fd
= open("/dev/urandom", O_WRONLY
|O_CLOEXEC
|O_NOCTTY
);
677 return log_debug_errno(errno
, "Failed to open /dev/urandom for writing: %m");
679 r
= loop_write(fd
, buffer
, rps
, false);
681 return log_debug_errno(r
, "Failed to write PKCS#11 acquired random data to /dev/urandom: %m");
683 log_debug("Successfully written %zu bytes random data acquired via PKCS#11 to kernel random pool.", rps
);
688 static int token_process(
691 const CK_SLOT_INFO
*slot_info
,
692 const CK_TOKEN_INFO
*token_info
,
693 P11KitUri
*search_uri
,
694 pkcs11_find_token_callback_t callback
,
697 _cleanup_free_
char *token_label
= NULL
;
698 CK_SESSION_HANDLE session
;
707 token_label
= pkcs11_token_label(token_info
);
711 rv
= m
->C_OpenSession(slotid
, CKF_SERIAL_SESSION
, NULL
, NULL
, &session
);
713 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
714 "Failed to create session for security token '%s': %s", token_label
, p11_kit_strerror(rv
));
717 r
= callback(m
, session
, slotid
, slot_info
, token_info
, search_uri
, userdata
);
719 r
= 1; /* if not callback was specified, just say we found what we were looking for */
721 rv
= m
->C_CloseSession(session
);
723 log_warning("Failed to close session on PKCS#11 token, ignoring: %s", p11_kit_strerror(rv
));
728 static int slot_process(
731 P11KitUri
*search_uri
,
732 pkcs11_find_token_callback_t callback
,
735 _cleanup_(p11_kit_uri_freep
) P11KitUri
* slot_uri
= NULL
, *token_uri
= NULL
;
736 _cleanup_free_
char *token_uri_string
= NULL
;
737 CK_TOKEN_INFO token_info
;
738 CK_SLOT_INFO slot_info
;
745 /* We return -EAGAIN for all failures we can attribute to a specific slot in some way, so that the
746 * caller might try other slots before giving up. */
748 rv
= m
->C_GetSlotInfo(slotid
, &slot_info
);
750 log_warning("Failed to acquire slot info for slot %lu, ignoring slot: %s", slotid
, p11_kit_strerror(rv
));
754 slot_uri
= uri_from_slot_info(&slot_info
);
759 _cleanup_free_
char *slot_uri_string
= NULL
;
761 uri_result
= p11_kit_uri_format(slot_uri
, P11_KIT_URI_FOR_ANY
, &slot_uri_string
);
762 if (uri_result
!= P11_KIT_URI_OK
) {
763 log_warning("Failed to format slot URI, ignoring slot: %s", p11_kit_uri_message(uri_result
));
767 log_debug("Found slot with URI %s", slot_uri_string
);
770 rv
= m
->C_GetTokenInfo(slotid
, &token_info
);
771 if (rv
== CKR_TOKEN_NOT_PRESENT
) {
772 log_debug("Token not present in slot, ignoring.");
774 } else if (rv
!= CKR_OK
) {
775 log_warning("Failed to acquire token info for slot %lu, ignoring slot: %s", slotid
, p11_kit_strerror(rv
));
779 token_uri
= uri_from_token_info(&token_info
);
783 uri_result
= p11_kit_uri_format(token_uri
, P11_KIT_URI_FOR_ANY
, &token_uri_string
);
784 if (uri_result
!= P11_KIT_URI_OK
) {
785 log_warning("Failed to format slot URI: %s", p11_kit_uri_message(uri_result
));
789 if (!p11_kit_uri_match_token_info(search_uri
, &token_info
)) {
790 log_debug("Found non-matching token with URI %s.", token_uri_string
);
794 log_debug("Found matching token with URI %s.", token_uri_string
);
796 return token_process(
806 static int module_process(
808 P11KitUri
*search_uri
,
809 pkcs11_find_token_callback_t callback
,
812 _cleanup_free_
char *name
= NULL
, *module_uri_string
= NULL
;
813 _cleanup_(p11_kit_uri_freep
) P11KitUri
* module_uri
= NULL
;
814 _cleanup_free_ CK_SLOT_ID
*slotids
= NULL
;
815 CK_ULONG n_slotids
= 0;
825 /* We ignore most errors from modules here, in order to skip over faulty modules: one faulty module
826 * should not have the effect that we don't try the others anymore. We indicate such per-module
827 * failures with -EAGAIN, which let's the caller try the next module. */
829 name
= p11_kit_module_get_name(m
);
833 log_debug("Trying PKCS#11 module %s.", name
);
835 rv
= m
->C_GetInfo(&info
);
837 log_warning("Failed to get info on PKCS#11 module, ignoring module: %s", p11_kit_strerror(rv
));
841 module_uri
= uri_from_module_info(&info
);
845 uri_result
= p11_kit_uri_format(module_uri
, P11_KIT_URI_FOR_ANY
, &module_uri_string
);
846 if (uri_result
!= P11_KIT_URI_OK
) {
847 log_warning("Failed to format module URI, ignoring module: %s", p11_kit_uri_message(uri_result
));
851 log_debug("Found module with URI %s", module_uri_string
);
853 rv
= pkcs11_get_slot_list_malloc(m
, &slotids
, &n_slotids
);
855 log_warning("Failed to get slot list, ignoring module: %s", p11_kit_strerror(rv
));
858 if (n_slotids
== 0) {
859 log_debug("This module has no slots? Ignoring module.");
863 for (k
= 0; k
< n_slotids
; k
++) {
877 int pkcs11_find_token(
878 const char *pkcs11_uri
,
879 pkcs11_find_token_callback_t callback
,
882 _cleanup_(p11_kit_modules_finalize_and_releasep
) CK_FUNCTION_LIST
**modules
= NULL
;
883 _cleanup_(p11_kit_uri_freep
) P11KitUri
*search_uri
= NULL
;
888 /* Execute the specified callback for each matching token found. If nothing is found returns
889 * -EAGAIN. Logs about all errors, except for EAGAIN, which the caller has to log about. */
891 r
= uri_from_string(pkcs11_uri
, &search_uri
);
893 return log_error_errno(r
, "Failed to parse PKCS#11 URI '%s': %m", pkcs11_uri
);
895 modules
= p11_kit_modules_load_and_initialize(0);
897 return log_error_errno(SYNTHETIC_ERRNO(EIO
), "Failed to initialize pkcs11 modules");
899 for (CK_FUNCTION_LIST
**i
= modules
; *i
; i
++) {