1 /*
2 * Copyright 2019-2024 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include <assert.h>
11 #include <openssl/core.h>
12 #include <openssl/core_dispatch.h>
13 #include <openssl/core_names.h>
14 #include <openssl/provider.h>
15 #include <openssl/params.h>
16 #include <openssl/opensslv.h>
17 #include "crypto/cryptlib.h"
18 #ifndef FIPS_MODULE
19 #include "crypto/decoder.h" /* ossl_decoder_store_cache_flush */
20 #include "crypto/encoder.h" /* ossl_encoder_store_cache_flush */
21 #include "crypto/store.h" /* ossl_store_loader_store_cache_flush */
22 #endif
23 #include "crypto/evp.h" /* evp_method_store_cache_flush */
24 #include "crypto/rand.h"
25 #include "internal/nelem.h"
26 #include "internal/thread_once.h"
27 #include "internal/provider.h"
28 #include "internal/refcount.h"
29 #include "internal/bio.h"
30 #include "internal/core.h"
31 #include "provider_local.h"
32 #include "crypto/context.h"
33 #ifndef FIPS_MODULE
34 # include <openssl/self_test.h>
35 # include <openssl/indicator.h>
36 #endif
37
38 /*
39 * This file defines and uses a number of different structures:
40 *
41 * OSSL_PROVIDER (provider_st): Used to represent all information related to a
42 * single instance of a provider.
43 *
44 * provider_store_st: Holds information about the collection of providers that
45 * are available within the current library context (OSSL_LIB_CTX). It also
46 * holds configuration information about providers that could be loaded at some
47 * future point.
48 *
49 * OSSL_PROVIDER_CHILD_CB: An instance of this structure holds the callbacks
50 * that have been registered for a child library context and the associated
51 * provider that registered those callbacks.
52 *
53 * Where a child library context exists then it has its own instance of the
54 * provider store. Each provider that exists in the parent provider store, has
55 * an associated child provider in the child library context's provider store.
56 * As providers get activated or deactivated this needs to be mirrored in the
57 * associated child providers.
58 *
59 * LOCKING
60 * =======
61 *
62 * There are a number of different locks used in this file and it is important
63 * to understand how they should be used in order to avoid deadlocks.
64 *
65 * Fields within a structure can often be "write once" on creation, and then
66 * "read many". Creation of a structure is done by a single thread, and
67 * therefore no lock is required for the "write once/read many" fields. It is
68 * safe for multiple threads to read these fields without a lock, because they
69 * will never be changed.
70 *
71 * However some fields may be changed after a structure has been created and
72 * shared between multiple threads. Where this is the case a lock is required.
73 *
74 * The locks available are:
75 *
76 * The provider flag_lock: Used to control updates to the various provider
77 * "flags" (flag_initialized and flag_activated).
78 *
79 * The provider activatecnt_lock: Used to control updates to the provider
80 * activatecnt value.
81 *
82 * The provider optbits_lock: Used to control access to the provider's
83 * operation_bits and operation_bits_sz fields.
84 *
85 * The store default_path_lock: Used to control access to the provider store's
86 * default search path value (default_path)
87 *
88 * The store lock: Used to control the stack of provider's held within the
89 * provider store, as well as the stack of registered child provider callbacks.
90 *
91 * As a general rule-of-thumb it is best to:
92 * - keep the scope of the code that is protected by a lock to the absolute
93 * minimum possible;
94 * - try to keep the scope of the lock to within a single function (i.e. avoid
95 * making calls to other functions while holding a lock);
96 * - try to only ever hold one lock at a time.
97 *
98 * Unfortunately, it is not always possible to stick to the above guidelines.
99 * Where they are not adhered to there is always a danger of inadvertently
100 * introducing the possibility of deadlock. The following rules MUST be adhered
101 * to in order to avoid that:
102 * - Holding multiple locks at the same time is only allowed for the
103 * provider store lock, the provider activatecnt_lock and the provider flag_lock.
104 * - When holding multiple locks they must be acquired in the following order of
105 * precedence:
106 * 1) provider store lock
107 * 2) provider flag_lock
108 * 3) provider activatecnt_lock
109 * - When releasing locks they must be released in the reverse order to which
110 * they were acquired
111 * - No locks may be held when making an upcall. NOTE: Some common functions
112 * can make upcalls as part of their normal operation. If you need to call
113 * some other function while holding a lock make sure you know whether it
114 * will make any upcalls or not. For example ossl_provider_up_ref() can call
115 * ossl_provider_up_ref_parent() which can call the c_prov_up_ref() upcall.
116 * - It is permissible to hold the store and flag locks when calling child
117 * provider callbacks. No other locks may be held during such callbacks.
118 */
119
120 static OSSL_PROVIDER *provider_new(const char *name,
121 OSSL_provider_init_fn *init_function,
122 STACK_OF(INFOPAIR) *parameters);
123
124 /*-
125 * Provider Object structure
126 * =========================
127 */
128
129 #ifndef FIPS_MODULE
130 typedef struct {
131 OSSL_PROVIDER *prov;
132 int (*create_cb)(const OSSL_CORE_HANDLE *provider, void *cbdata);
133 int (*remove_cb)(const OSSL_CORE_HANDLE *provider, void *cbdata);
134 int (*global_props_cb)(const char *props, void *cbdata);
135 void *cbdata;
136 } OSSL_PROVIDER_CHILD_CB;
137 DEFINE_STACK_OF(OSSL_PROVIDER_CHILD_CB)
138 #endif
139
140 struct provider_store_st; /* Forward declaration */
141
142 struct ossl_provider_st {
143 /* Flag bits */
144 unsigned int flag_initialized:1;
145 unsigned int flag_activated:1;
146
147 /* Getting and setting the flags require synchronization */
148 CRYPTO_RWLOCK *flag_lock;
149
150 /* OpenSSL library side data */
151 CRYPTO_REF_COUNT refcnt;
152 CRYPTO_RWLOCK *activatecnt_lock; /* For the activatecnt counter */
153 int activatecnt;
154 char *name;
155 char *path;
156 DSO *module;
157 OSSL_provider_init_fn *init_function;
158 STACK_OF(INFOPAIR) *parameters;
159 OSSL_LIB_CTX *libctx; /* The library context this instance is in */
160 struct provider_store_st *store; /* The store this instance belongs to */
161 #ifndef FIPS_MODULE
162 /*
163 * In the FIPS module inner provider, this isn't needed, since the
164 * error upcalls are always direct calls to the outer provider.
165 */
166 int error_lib; /* ERR library number, one for each provider */
167 # ifndef OPENSSL_NO_ERR
168 ERR_STRING_DATA *error_strings; /* Copy of what the provider gives us */
169 # endif
170 #endif
171
172 /* Provider side functions */
173 OSSL_FUNC_provider_teardown_fn *teardown;
174 OSSL_FUNC_provider_gettable_params_fn *gettable_params;
175 OSSL_FUNC_provider_get_params_fn *get_params;
176 OSSL_FUNC_provider_get_capabilities_fn *get_capabilities;
177 OSSL_FUNC_provider_self_test_fn *self_test;
178 OSSL_FUNC_provider_query_operation_fn *query_operation;
179 OSSL_FUNC_provider_unquery_operation_fn *unquery_operation;
180
181 /*
182 * Cache of bit to indicate of query_operation() has been called on
183 * a specific operation or not.
184 */
185 unsigned char *operation_bits;
186 size_t operation_bits_sz;
187 CRYPTO_RWLOCK *opbits_lock;
188
189 #ifndef FIPS_MODULE
190 /* Whether this provider is the child of some other provider */
191 const OSSL_CORE_HANDLE *handle;
192 unsigned int ischild:1;
193 #endif
194
195 /* Provider side data */
196 void *provctx;
197 const OSSL_DISPATCH *dispatch;
198 };
DEFINE_STACK_OF(OSSL_PROVIDER)199 DEFINE_STACK_OF(OSSL_PROVIDER)
200
201 static int ossl_provider_cmp(const OSSL_PROVIDER * const *a,
202 const OSSL_PROVIDER * const *b)
203 {
204 return strcmp((*a)->name, (*b)->name);
205 }
206
207 /*-
208 * Provider Object store
209 * =====================
210 *
211 * The Provider Object store is a library context object, and therefore needs
212 * an index.
213 */
214
215 struct provider_store_st {
216 OSSL_LIB_CTX *libctx;
217 STACK_OF(OSSL_PROVIDER) *providers;
218 STACK_OF(OSSL_PROVIDER_CHILD_CB) *child_cbs;
219 CRYPTO_RWLOCK *default_path_lock;
220 CRYPTO_RWLOCK *lock;
221 char *default_path;
222 OSSL_PROVIDER_INFO *provinfo;
223 size_t numprovinfo;
224 size_t provinfosz;
225 unsigned int use_fallbacks:1;
226 unsigned int freeing:1;
227 };
228
229 /*
230 * provider_deactivate_free() is a wrapper around ossl_provider_deactivate()
231 * and ossl_provider_free(), called as needed.
232 * Since this is only called when the provider store is being emptied, we
233 * don't need to care about any lock.
234 */
provider_deactivate_free(OSSL_PROVIDER * prov)235 static void provider_deactivate_free(OSSL_PROVIDER *prov)
236 {
237 if (prov->flag_activated)
238 ossl_provider_deactivate(prov, 1);
239 ossl_provider_free(prov);
240 }
241
242 #ifndef FIPS_MODULE
ossl_provider_child_cb_free(OSSL_PROVIDER_CHILD_CB * cb)243 static void ossl_provider_child_cb_free(OSSL_PROVIDER_CHILD_CB *cb)
244 {
245 OPENSSL_free(cb);
246 }
247 #endif
248
infopair_free(INFOPAIR * pair)249 static void infopair_free(INFOPAIR *pair)
250 {
251 OPENSSL_free(pair->name);
252 OPENSSL_free(pair->value);
253 OPENSSL_free(pair);
254 }
255
infopair_copy(const INFOPAIR * src)256 static INFOPAIR *infopair_copy(const INFOPAIR *src)
257 {
258 INFOPAIR *dest = OPENSSL_zalloc(sizeof(*dest));
259
260 if (dest == NULL)
261 return NULL;
262 if (src->name != NULL) {
263 dest->name = OPENSSL_strdup(src->name);
264 if (dest->name == NULL)
265 goto err;
266 }
267 if (src->value != NULL) {
268 dest->value = OPENSSL_strdup(src->value);
269 if (dest->value == NULL)
270 goto err;
271 }
272 return dest;
273 err:
274 OPENSSL_free(dest->name);
275 OPENSSL_free(dest);
276 return NULL;
277 }
278
ossl_provider_info_clear(OSSL_PROVIDER_INFO * info)279 void ossl_provider_info_clear(OSSL_PROVIDER_INFO *info)
280 {
281 OPENSSL_free(info->name);
282 OPENSSL_free(info->path);
283 sk_INFOPAIR_pop_free(info->parameters, infopair_free);
284 }
285
ossl_provider_store_free(void * vstore)286 void ossl_provider_store_free(void *vstore)
287 {
288 struct provider_store_st *store = vstore;
289 size_t i;
290
291 if (store == NULL)
292 return;
293 store->freeing = 1;
294 OPENSSL_free(store->default_path);
295 sk_OSSL_PROVIDER_pop_free(store->providers, provider_deactivate_free);
296 #ifndef FIPS_MODULE
297 sk_OSSL_PROVIDER_CHILD_CB_pop_free(store->child_cbs,
298 ossl_provider_child_cb_free);
299 #endif
300 CRYPTO_THREAD_lock_free(store->default_path_lock);
301 CRYPTO_THREAD_lock_free(store->lock);
302 for (i = 0; i < store->numprovinfo; i++)
303 ossl_provider_info_clear(&store->provinfo[i]);
304 OPENSSL_free(store->provinfo);
305 OPENSSL_free(store);
306 }
307
ossl_provider_store_new(OSSL_LIB_CTX * ctx)308 void *ossl_provider_store_new(OSSL_LIB_CTX *ctx)
309 {
310 struct provider_store_st *store = OPENSSL_zalloc(sizeof(*store));
311
312 if (store == NULL
313 || (store->providers = sk_OSSL_PROVIDER_new(ossl_provider_cmp)) == NULL
314 || (store->default_path_lock = CRYPTO_THREAD_lock_new()) == NULL
315 #ifndef FIPS_MODULE
316 || (store->child_cbs = sk_OSSL_PROVIDER_CHILD_CB_new_null()) == NULL
317 #endif
318 || (store->lock = CRYPTO_THREAD_lock_new()) == NULL) {
319 ossl_provider_store_free(store);
320 return NULL;
321 }
322 store->libctx = ctx;
323 store->use_fallbacks = 1;
324
325 return store;
326 }
327
get_provider_store(OSSL_LIB_CTX * libctx)328 static struct provider_store_st *get_provider_store(OSSL_LIB_CTX *libctx)
329 {
330 struct provider_store_st *store = NULL;
331
332 store = ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_PROVIDER_STORE_INDEX);
333 if (store == NULL)
334 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
335 return store;
336 }
337
ossl_provider_disable_fallback_loading(OSSL_LIB_CTX * libctx)338 int ossl_provider_disable_fallback_loading(OSSL_LIB_CTX *libctx)
339 {
340 struct provider_store_st *store;
341
342 if ((store = get_provider_store(libctx)) != NULL) {
343 if (!CRYPTO_THREAD_write_lock(store->lock))
344 return 0;
345 store->use_fallbacks = 0;
346 CRYPTO_THREAD_unlock(store->lock);
347 return 1;
348 }
349 return 0;
350 }
351
352 #define BUILTINS_BLOCK_SIZE 10
353
ossl_provider_info_add_to_store(OSSL_LIB_CTX * libctx,OSSL_PROVIDER_INFO * entry)354 int ossl_provider_info_add_to_store(OSSL_LIB_CTX *libctx,
355 OSSL_PROVIDER_INFO *entry)
356 {
357 struct provider_store_st *store = get_provider_store(libctx);
358 int ret = 0;
359
360 if (entry->name == NULL) {
361 ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
362 return 0;
363 }
364
365 if (store == NULL) {
366 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
367 return 0;
368 }
369
370 if (!CRYPTO_THREAD_write_lock(store->lock))
371 return 0;
372 if (store->provinfosz == 0) {
373 store->provinfo = OPENSSL_zalloc(sizeof(*store->provinfo)
374 * BUILTINS_BLOCK_SIZE);
375 if (store->provinfo == NULL)
376 goto err;
377 store->provinfosz = BUILTINS_BLOCK_SIZE;
378 } else if (store->numprovinfo == store->provinfosz) {
379 OSSL_PROVIDER_INFO *tmpbuiltins;
380 size_t newsz = store->provinfosz + BUILTINS_BLOCK_SIZE;
381
382 tmpbuiltins = OPENSSL_realloc(store->provinfo,
383 sizeof(*store->provinfo) * newsz);
384 if (tmpbuiltins == NULL)
385 goto err;
386 store->provinfo = tmpbuiltins;
387 store->provinfosz = newsz;
388 }
389 store->provinfo[store->numprovinfo] = *entry;
390 store->numprovinfo++;
391
392 ret = 1;
393 err:
394 CRYPTO_THREAD_unlock(store->lock);
395 return ret;
396 }
397
ossl_provider_find(OSSL_LIB_CTX * libctx,const char * name,ossl_unused int noconfig)398 OSSL_PROVIDER *ossl_provider_find(OSSL_LIB_CTX *libctx, const char *name,
399 ossl_unused int noconfig)
400 {
401 struct provider_store_st *store = NULL;
402 OSSL_PROVIDER *prov = NULL;
403
404 if ((store = get_provider_store(libctx)) != NULL) {
405 OSSL_PROVIDER tmpl = { 0, };
406 int i;
407
408 #if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_AUTOLOAD_CONFIG)
409 /*
410 * Make sure any providers are loaded from config before we try to find
411 * them.
412 */
413 if (!noconfig) {
414 if (ossl_lib_ctx_is_default(libctx))
415 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
416 }
417 #endif
418
419 tmpl.name = (char *)name;
420 if (!CRYPTO_THREAD_write_lock(store->lock))
421 return NULL;
422 sk_OSSL_PROVIDER_sort(store->providers);
423 if ((i = sk_OSSL_PROVIDER_find(store->providers, &tmpl)) != -1)
424 prov = sk_OSSL_PROVIDER_value(store->providers, i);
425 CRYPTO_THREAD_unlock(store->lock);
426 if (prov != NULL && !ossl_provider_up_ref(prov))
427 prov = NULL;
428 }
429
430 return prov;
431 }
432
433 /*-
434 * Provider Object methods
435 * =======================
436 */
437
provider_new(const char * name,OSSL_provider_init_fn * init_function,STACK_OF (INFOPAIR)* parameters)438 static OSSL_PROVIDER *provider_new(const char *name,
439 OSSL_provider_init_fn *init_function,
440 STACK_OF(INFOPAIR) *parameters)
441 {
442 OSSL_PROVIDER *prov = NULL;
443
444 if ((prov = OPENSSL_zalloc(sizeof(*prov))) == NULL)
445 return NULL;
446 if (!CRYPTO_NEW_REF(&prov->refcnt, 1)) {
447 OPENSSL_free(prov);
448 return NULL;
449 }
450 if ((prov->activatecnt_lock = CRYPTO_THREAD_lock_new()) == NULL) {
451 ossl_provider_free(prov);
452 ERR_raise(ERR_LIB_CRYPTO, ERR_R_CRYPTO_LIB);
453 return NULL;
454 }
455
456 if ((prov->opbits_lock = CRYPTO_THREAD_lock_new()) == NULL
457 || (prov->flag_lock = CRYPTO_THREAD_lock_new()) == NULL
458 || (prov->parameters = sk_INFOPAIR_deep_copy(parameters,
459 infopair_copy,
460 infopair_free)) == NULL) {
461 ossl_provider_free(prov);
462 ERR_raise(ERR_LIB_CRYPTO, ERR_R_CRYPTO_LIB);
463 return NULL;
464 }
465 if ((prov->name = OPENSSL_strdup(name)) == NULL) {
466 ossl_provider_free(prov);
467 return NULL;
468 }
469
470 prov->init_function = init_function;
471
472 return prov;
473 }
474
ossl_provider_up_ref(OSSL_PROVIDER * prov)475 int ossl_provider_up_ref(OSSL_PROVIDER *prov)
476 {
477 int ref = 0;
478
479 if (CRYPTO_UP_REF(&prov->refcnt, &ref) <= 0)
480 return 0;
481
482 #ifndef FIPS_MODULE
483 if (prov->ischild) {
484 if (!ossl_provider_up_ref_parent(prov, 0)) {
485 ossl_provider_free(prov);
486 return 0;
487 }
488 }
489 #endif
490
491 return ref;
492 }
493
494 #ifndef FIPS_MODULE
provider_up_ref_intern(OSSL_PROVIDER * prov,int activate)495 static int provider_up_ref_intern(OSSL_PROVIDER *prov, int activate)
496 {
497 if (activate)
498 return ossl_provider_activate(prov, 1, 0);
499
500 return ossl_provider_up_ref(prov);
501 }
502
provider_free_intern(OSSL_PROVIDER * prov,int deactivate)503 static int provider_free_intern(OSSL_PROVIDER *prov, int deactivate)
504 {
505 if (deactivate)
506 return ossl_provider_deactivate(prov, 1);
507
508 ossl_provider_free(prov);
509 return 1;
510 }
511 #endif
512
513 /*
514 * We assume that the requested provider does not already exist in the store.
515 * The caller should check. If it does exist then adding it to the store later
516 * will fail.
517 */
ossl_provider_new(OSSL_LIB_CTX * libctx,const char * name,OSSL_provider_init_fn * init_function,OSSL_PARAM * params,int noconfig)518 OSSL_PROVIDER *ossl_provider_new(OSSL_LIB_CTX *libctx, const char *name,
519 OSSL_provider_init_fn *init_function,
520 OSSL_PARAM *params, int noconfig)
521 {
522 struct provider_store_st *store = NULL;
523 OSSL_PROVIDER_INFO template;
524 OSSL_PROVIDER *prov = NULL;
525
526 if ((store = get_provider_store(libctx)) == NULL)
527 return NULL;
528
529 memset(&template, 0, sizeof(template));
530 if (init_function == NULL) {
531 const OSSL_PROVIDER_INFO *p;
532 size_t i;
533
534 /* Check if this is a predefined builtin provider */
535 for (p = ossl_predefined_providers; p->name != NULL; p++) {
536 if (strcmp(p->name, name) == 0) {
537 template = *p;
538 break;
539 }
540 }
541 if (p->name == NULL) {
542 /* Check if this is a user added provider */
543 if (!CRYPTO_THREAD_read_lock(store->lock))
544 return NULL;
545 for (i = 0, p = store->provinfo; i < store->numprovinfo; p++, i++) {
546 if (strcmp(p->name, name) == 0) {
547 template = *p;
548 break;
549 }
550 }
551 CRYPTO_THREAD_unlock(store->lock);
552 }
553 } else {
554 template.init = init_function;
555 }
556
557 if (params != NULL) {
558 int i;
559
560 template.parameters = sk_INFOPAIR_new_null();
561 if (template.parameters == NULL)
562 return NULL;
563
564 for (i = 0; params[i].key != NULL; i++) {
565 if (params[i].data_type != OSSL_PARAM_UTF8_STRING)
566 continue;
567 if (ossl_provider_info_add_parameter(&template, params[i].key,
568 (char *)params[i].data) <= 0) {
569 sk_INFOPAIR_pop_free(template.parameters, infopair_free);
570 return NULL;
571 }
572 }
573 }
574
575 /* provider_new() generates an error, so no need here */
576 prov = provider_new(name, template.init, template.parameters);
577
578 if (params != NULL) /* We copied the parameters, let's free them */
579 sk_INFOPAIR_pop_free(template.parameters, infopair_free);
580
581 if (prov == NULL)
582 return NULL;
583
584 if (!ossl_provider_set_module_path(prov, template.path)) {
585 ossl_provider_free(prov);
586 return NULL;
587 }
588
589 prov->libctx = libctx;
590 #ifndef FIPS_MODULE
591 prov->error_lib = ERR_get_next_error_library();
592 #endif
593
594 /*
595 * At this point, the provider is only partially "loaded". To be
596 * fully "loaded", ossl_provider_activate() must also be called and it must
597 * then be added to the provider store.
598 */
599
600 return prov;
601 }
602
603 /* Assumes that the store lock is held */
create_provider_children(OSSL_PROVIDER * prov)604 static int create_provider_children(OSSL_PROVIDER *prov)
605 {
606 int ret = 1;
607 #ifndef FIPS_MODULE
608 struct provider_store_st *store = prov->store;
609 OSSL_PROVIDER_CHILD_CB *child_cb;
610 int i, max;
611
612 max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
613 for (i = 0; i < max; i++) {
614 /*
615 * This is newly activated (activatecnt == 1), so we need to
616 * create child providers as necessary.
617 */
618 child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
619 ret &= child_cb->create_cb((OSSL_CORE_HANDLE *)prov, child_cb->cbdata);
620 }
621 #endif
622
623 return ret;
624 }
625
ossl_provider_add_to_store(OSSL_PROVIDER * prov,OSSL_PROVIDER ** actualprov,int retain_fallbacks)626 int ossl_provider_add_to_store(OSSL_PROVIDER *prov, OSSL_PROVIDER **actualprov,
627 int retain_fallbacks)
628 {
629 struct provider_store_st *store;
630 int idx;
631 OSSL_PROVIDER tmpl = { 0, };
632 OSSL_PROVIDER *actualtmp = NULL;
633
634 if (actualprov != NULL)
635 *actualprov = NULL;
636
637 if ((store = get_provider_store(prov->libctx)) == NULL)
638 return 0;
639
640 if (!CRYPTO_THREAD_write_lock(store->lock))
641 return 0;
642
643 tmpl.name = (char *)prov->name;
644 idx = sk_OSSL_PROVIDER_find(store->providers, &tmpl);
645 if (idx == -1)
646 actualtmp = prov;
647 else
648 actualtmp = sk_OSSL_PROVIDER_value(store->providers, idx);
649
650 if (idx == -1) {
651 if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0)
652 goto err;
653 prov->store = store;
654 if (!create_provider_children(prov)) {
655 sk_OSSL_PROVIDER_delete_ptr(store->providers, prov);
656 goto err;
657 }
658 if (!retain_fallbacks)
659 store->use_fallbacks = 0;
660 }
661
662 CRYPTO_THREAD_unlock(store->lock);
663
664 if (actualprov != NULL) {
665 if (!ossl_provider_up_ref(actualtmp)) {
666 ERR_raise(ERR_LIB_CRYPTO, ERR_R_CRYPTO_LIB);
667 actualtmp = NULL;
668 return 0;
669 }
670 *actualprov = actualtmp;
671 }
672
673 if (idx >= 0) {
674 /*
675 * The provider is already in the store. Probably two threads
676 * independently initialised their own provider objects with the same
677 * name and raced to put them in the store. This thread lost. We
678 * deactivate the one we just created and use the one that already
679 * exists instead.
680 * If we get here then we know we did not create provider children
681 * above, so we inform ossl_provider_deactivate not to attempt to remove
682 * any.
683 */
684 ossl_provider_deactivate(prov, 0);
685 ossl_provider_free(prov);
686 }
687 #ifndef FIPS_MODULE
688 else {
689 /*
690 * This can be done outside the lock. We tolerate other threads getting
691 * the wrong result briefly when creating OSSL_DECODER_CTXs.
692 */
693 ossl_decoder_cache_flush(prov->libctx);
694 }
695 #endif
696
697 return 1;
698
699 err:
700 CRYPTO_THREAD_unlock(store->lock);
701 return 0;
702 }
703
ossl_provider_free(OSSL_PROVIDER * prov)704 void ossl_provider_free(OSSL_PROVIDER *prov)
705 {
706 if (prov != NULL) {
707 int ref = 0;
708
709 CRYPTO_DOWN_REF(&prov->refcnt, &ref);
710
711 /*
712 * When the refcount drops to zero, we clean up the provider.
713 * Note that this also does teardown, which may seem late,
714 * considering that init happens on first activation. However,
715 * there may be other structures hanging on to the provider after
716 * the last deactivation and may therefore need full access to the
717 * provider's services. Therefore, we deinit late.
718 */
719 if (ref == 0) {
720 if (prov->flag_initialized) {
721 ossl_provider_teardown(prov);
722 #ifndef OPENSSL_NO_ERR
723 # ifndef FIPS_MODULE
724 if (prov->error_strings != NULL) {
725 ERR_unload_strings(prov->error_lib, prov->error_strings);
726 OPENSSL_free(prov->error_strings);
727 prov->error_strings = NULL;
728 }
729 # endif
730 #endif
731 OPENSSL_free(prov->operation_bits);
732 prov->operation_bits = NULL;
733 prov->operation_bits_sz = 0;
734 prov->flag_initialized = 0;
735 }
736
737 #ifndef FIPS_MODULE
738 /*
739 * We deregister thread handling whether or not the provider was
740 * initialized. If init was attempted but was not successful then
741 * the provider may still have registered a thread handler.
742 */
743 ossl_init_thread_deregister(prov);
744 DSO_free(prov->module);
745 #endif
746 OPENSSL_free(prov->name);
747 OPENSSL_free(prov->path);
748 sk_INFOPAIR_pop_free(prov->parameters, infopair_free);
749 CRYPTO_THREAD_lock_free(prov->opbits_lock);
750 CRYPTO_THREAD_lock_free(prov->flag_lock);
751 CRYPTO_THREAD_lock_free(prov->activatecnt_lock);
752 CRYPTO_FREE_REF(&prov->refcnt);
753 OPENSSL_free(prov);
754 }
755 #ifndef FIPS_MODULE
756 else if (prov->ischild) {
757 ossl_provider_free_parent(prov, 0);
758 }
759 #endif
760 }
761 }
762
763 /* Setters */
ossl_provider_set_module_path(OSSL_PROVIDER * prov,const char * module_path)764 int ossl_provider_set_module_path(OSSL_PROVIDER *prov, const char *module_path)
765 {
766 OPENSSL_free(prov->path);
767 prov->path = NULL;
768 if (module_path == NULL)
769 return 1;
770 if ((prov->path = OPENSSL_strdup(module_path)) != NULL)
771 return 1;
772 return 0;
773 }
774
infopair_add(STACK_OF (INFOPAIR)** infopairsk,const char * name,const char * value)775 static int infopair_add(STACK_OF(INFOPAIR) **infopairsk, const char *name,
776 const char *value)
777 {
778 INFOPAIR *pair = NULL;
779
780 if ((pair = OPENSSL_zalloc(sizeof(*pair))) == NULL
781 || (pair->name = OPENSSL_strdup(name)) == NULL
782 || (pair->value = OPENSSL_strdup(value)) == NULL)
783 goto err;
784
785 if ((*infopairsk == NULL
786 && (*infopairsk = sk_INFOPAIR_new_null()) == NULL)
787 || sk_INFOPAIR_push(*infopairsk, pair) <= 0) {
788 ERR_raise(ERR_LIB_CRYPTO, ERR_R_CRYPTO_LIB);
789 goto err;
790 }
791
792 return 1;
793
794 err:
795 if (pair != NULL) {
796 OPENSSL_free(pair->name);
797 OPENSSL_free(pair->value);
798 OPENSSL_free(pair);
799 }
800 return 0;
801 }
802
ossl_provider_add_parameter(OSSL_PROVIDER * prov,const char * name,const char * value)803 int ossl_provider_add_parameter(OSSL_PROVIDER *prov,
804 const char *name, const char *value)
805 {
806 return infopair_add(&prov->parameters, name, value);
807 }
808
ossl_provider_info_add_parameter(OSSL_PROVIDER_INFO * provinfo,const char * name,const char * value)809 int ossl_provider_info_add_parameter(OSSL_PROVIDER_INFO *provinfo,
810 const char *name,
811 const char *value)
812 {
813 return infopair_add(&provinfo->parameters, name, value);
814 }
815
816 /*
817 * Provider activation.
818 *
819 * What "activation" means depends on the provider form; for built in
820 * providers (in the library or the application alike), the provider
821 * can already be considered to be loaded, all that's needed is to
822 * initialize it. However, for dynamically loadable provider modules,
823 * we must first load that module.
824 *
825 * Built in modules are distinguished from dynamically loaded modules
826 * with an already assigned init function.
827 */
828 static const OSSL_DISPATCH *core_dispatch; /* Define further down */
829
OSSL_PROVIDER_set_default_search_path(OSSL_LIB_CTX * libctx,const char * path)830 int OSSL_PROVIDER_set_default_search_path(OSSL_LIB_CTX *libctx,
831 const char *path)
832 {
833 struct provider_store_st *store;
834 char *p = NULL;
835
836 if (path != NULL) {
837 p = OPENSSL_strdup(path);
838 if (p == NULL)
839 return 0;
840 }
841 if ((store = get_provider_store(libctx)) != NULL
842 && CRYPTO_THREAD_write_lock(store->default_path_lock)) {
843 OPENSSL_free(store->default_path);
844 store->default_path = p;
845 CRYPTO_THREAD_unlock(store->default_path_lock);
846 return 1;
847 }
848 OPENSSL_free(p);
849 return 0;
850 }
851
OSSL_PROVIDER_get0_default_search_path(OSSL_LIB_CTX * libctx)852 const char *OSSL_PROVIDER_get0_default_search_path(OSSL_LIB_CTX *libctx)
853 {
854 struct provider_store_st *store;
855 char *path = NULL;
856
857 if ((store = get_provider_store(libctx)) != NULL
858 && CRYPTO_THREAD_read_lock(store->default_path_lock)) {
859 path = store->default_path;
860 CRYPTO_THREAD_unlock(store->default_path_lock);
861 }
862 return path;
863 }
864
865 /*
866 * Internal version that doesn't affect the store flags, and thereby avoid
867 * locking. Direct callers must remember to set the store flags when
868 * appropriate.
869 */
provider_init(OSSL_PROVIDER * prov)870 static int provider_init(OSSL_PROVIDER *prov)
871 {
872 const OSSL_DISPATCH *provider_dispatch = NULL;
873 void *tmp_provctx = NULL; /* safety measure */
874 #ifndef OPENSSL_NO_ERR
875 # ifndef FIPS_MODULE
876 OSSL_FUNC_provider_get_reason_strings_fn *p_get_reason_strings = NULL;
877 # endif
878 #endif
879 int ok = 0;
880
881 if (!ossl_assert(!prov->flag_initialized)) {
882 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
883 goto end;
884 }
885
886 /*
887 * If the init function isn't set, it indicates that this provider is
888 * a loadable module.
889 */
890 if (prov->init_function == NULL) {
891 #ifdef FIPS_MODULE
892 goto end;
893 #else
894 if (prov->module == NULL) {
895 char *allocated_path = NULL;
896 const char *module_path = NULL;
897 char *merged_path = NULL;
898 const char *load_dir = NULL;
899 char *allocated_load_dir = NULL;
900 struct provider_store_st *store;
901
902 if ((prov->module = DSO_new()) == NULL) {
903 /* DSO_new() generates an error already */
904 goto end;
905 }
906
907 if ((store = get_provider_store(prov->libctx)) == NULL
908 || !CRYPTO_THREAD_read_lock(store->default_path_lock))
909 goto end;
910
911 if (store->default_path != NULL) {
912 allocated_load_dir = OPENSSL_strdup(store->default_path);
913 CRYPTO_THREAD_unlock(store->default_path_lock);
914 if (allocated_load_dir == NULL)
915 goto end;
916 load_dir = allocated_load_dir;
917 } else {
918 CRYPTO_THREAD_unlock(store->default_path_lock);
919 }
920
921 if (load_dir == NULL) {
922 load_dir = ossl_safe_getenv("OPENSSL_MODULES");
923 if (load_dir == NULL)
924 load_dir = ossl_get_modulesdir();
925 }
926
927 DSO_ctrl(prov->module, DSO_CTRL_SET_FLAGS,
928 DSO_FLAG_NAME_TRANSLATION_EXT_ONLY, NULL);
929
930 module_path = prov->path;
931 if (module_path == NULL)
932 module_path = allocated_path =
933 DSO_convert_filename(prov->module, prov->name);
934 if (module_path != NULL)
935 merged_path = DSO_merge(prov->module, module_path, load_dir);
936
937 if (merged_path == NULL
938 || (DSO_load(prov->module, merged_path, NULL, 0)) == NULL) {
939 DSO_free(prov->module);
940 prov->module = NULL;
941 }
942
943 OPENSSL_free(merged_path);
944 OPENSSL_free(allocated_path);
945 OPENSSL_free(allocated_load_dir);
946 }
947
948 if (prov->module == NULL) {
949 /* DSO has already recorded errors, this is just a tracepoint */
950 ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_DSO_LIB,
951 "name=%s", prov->name);
952 goto end;
953 }
954
955 prov->init_function = (OSSL_provider_init_fn *)
956 DSO_bind_func(prov->module, "OSSL_provider_init");
957 #endif
958 }
959
960 /* Check for and call the initialise function for the provider. */
961 if (prov->init_function == NULL) {
962 ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_UNSUPPORTED,
963 "name=%s, provider has no provider init function",
964 prov->name);
965 goto end;
966 }
967
968 if (!prov->init_function((OSSL_CORE_HANDLE *)prov, core_dispatch,
969 &provider_dispatch, &tmp_provctx)) {
970 ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_INIT_FAIL,
971 "name=%s", prov->name);
972 goto end;
973 }
974 prov->provctx = tmp_provctx;
975 prov->dispatch = provider_dispatch;
976
977 if (provider_dispatch != NULL) {
978 for (; provider_dispatch->function_id != 0; provider_dispatch++) {
979 switch (provider_dispatch->function_id) {
980 case OSSL_FUNC_PROVIDER_TEARDOWN:
981 prov->teardown =
982 OSSL_FUNC_provider_teardown(provider_dispatch);
983 break;
984 case OSSL_FUNC_PROVIDER_GETTABLE_PARAMS:
985 prov->gettable_params =
986 OSSL_FUNC_provider_gettable_params(provider_dispatch);
987 break;
988 case OSSL_FUNC_PROVIDER_GET_PARAMS:
989 prov->get_params =
990 OSSL_FUNC_provider_get_params(provider_dispatch);
991 break;
992 case OSSL_FUNC_PROVIDER_SELF_TEST:
993 prov->self_test =
994 OSSL_FUNC_provider_self_test(provider_dispatch);
995 break;
996 case OSSL_FUNC_PROVIDER_GET_CAPABILITIES:
997 prov->get_capabilities =
998 OSSL_FUNC_provider_get_capabilities(provider_dispatch);
999 break;
1000 case OSSL_FUNC_PROVIDER_QUERY_OPERATION:
1001 prov->query_operation =
1002 OSSL_FUNC_provider_query_operation(provider_dispatch);
1003 break;
1004 case OSSL_FUNC_PROVIDER_UNQUERY_OPERATION:
1005 prov->unquery_operation =
1006 OSSL_FUNC_provider_unquery_operation(provider_dispatch);
1007 break;
1008 #ifndef OPENSSL_NO_ERR
1009 # ifndef FIPS_MODULE
1010 case OSSL_FUNC_PROVIDER_GET_REASON_STRINGS:
1011 p_get_reason_strings =
1012 OSSL_FUNC_provider_get_reason_strings(provider_dispatch);
1013 break;
1014 # endif
1015 #endif
1016 }
1017 }
1018 }
1019
1020 #ifndef OPENSSL_NO_ERR
1021 # ifndef FIPS_MODULE
1022 if (p_get_reason_strings != NULL) {
1023 const OSSL_ITEM *reasonstrings = p_get_reason_strings(prov->provctx);
1024 size_t cnt, cnt2;
1025
1026 /*
1027 * ERR_load_strings() handles ERR_STRING_DATA rather than OSSL_ITEM,
1028 * although they are essentially the same type.
1029 * Furthermore, ERR_load_strings() patches the array's error number
1030 * with the error library number, so we need to make a copy of that
1031 * array either way.
1032 */
1033 cnt = 0;
1034 while (reasonstrings[cnt].id != 0) {
1035 if (ERR_GET_LIB(reasonstrings[cnt].id) != 0)
1036 goto end;
1037 cnt++;
1038 }
1039 cnt++; /* One for the terminating item */
1040
1041 /* Allocate one extra item for the "library" name */
1042 prov->error_strings =
1043 OPENSSL_zalloc(sizeof(ERR_STRING_DATA) * (cnt + 1));
1044 if (prov->error_strings == NULL)
1045 goto end;
1046
1047 /*
1048 * Set the "library" name.
1049 */
1050 prov->error_strings[0].error = ERR_PACK(prov->error_lib, 0, 0);
1051 prov->error_strings[0].string = prov->name;
1052 /*
1053 * Copy reasonstrings item 0..cnt-1 to prov->error_trings positions
1054 * 1..cnt.
1055 */
1056 for (cnt2 = 1; cnt2 <= cnt; cnt2++) {
1057 prov->error_strings[cnt2].error = (int)reasonstrings[cnt2-1].id;
1058 prov->error_strings[cnt2].string = reasonstrings[cnt2-1].ptr;
1059 }
1060
1061 ERR_load_strings(prov->error_lib, prov->error_strings);
1062 }
1063 # endif
1064 #endif
1065
1066 /* With this flag set, this provider has become fully "loaded". */
1067 prov->flag_initialized = 1;
1068 ok = 1;
1069
1070 end:
1071 return ok;
1072 }
1073
1074 /*
1075 * Deactivate a provider. If upcalls is 0 then we suppress any upcalls to a
1076 * parent provider. If removechildren is 0 then we suppress any calls to remove
1077 * child providers.
1078 * Return -1 on failure and the activation count on success
1079 */
provider_deactivate(OSSL_PROVIDER * prov,int upcalls,int removechildren)1080 static int provider_deactivate(OSSL_PROVIDER *prov, int upcalls,
1081 int removechildren)
1082 {
1083 int count;
1084 struct provider_store_st *store;
1085 #ifndef FIPS_MODULE
1086 int freeparent = 0;
1087 #endif
1088 int lock = 1;
1089
1090 if (!ossl_assert(prov != NULL))
1091 return -1;
1092
1093 /*
1094 * No need to lock if we've got no store because we've not been shared with
1095 * other threads.
1096 */
1097 store = get_provider_store(prov->libctx);
1098 if (store == NULL)
1099 lock = 0;
1100
1101 if (lock && !CRYPTO_THREAD_read_lock(store->lock))
1102 return -1;
1103 if (lock && !CRYPTO_THREAD_write_lock(prov->flag_lock)) {
1104 CRYPTO_THREAD_unlock(store->lock);
1105 return -1;
1106 }
1107
1108 CRYPTO_atomic_add(&prov->activatecnt, -1, &count, prov->activatecnt_lock);
1109 #ifndef FIPS_MODULE
1110 if (count >= 1 && prov->ischild && upcalls) {
1111 /*
1112 * We have had a direct activation in this child libctx so we need to
1113 * now down the ref count in the parent provider. We do the actual down
1114 * ref outside of the flag_lock, since it could involve getting other
1115 * locks.
1116 */
1117 freeparent = 1;
1118 }
1119 #endif
1120
1121 if (count < 1)
1122 prov->flag_activated = 0;
1123 #ifndef FIPS_MODULE
1124 else
1125 removechildren = 0;
1126 #endif
1127
1128 #ifndef FIPS_MODULE
1129 if (removechildren && store != NULL) {
1130 int i, max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
1131 OSSL_PROVIDER_CHILD_CB *child_cb;
1132
1133 for (i = 0; i < max; i++) {
1134 child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
1135 child_cb->remove_cb((OSSL_CORE_HANDLE *)prov, child_cb->cbdata);
1136 }
1137 }
1138 #endif
1139 if (lock) {
1140 CRYPTO_THREAD_unlock(prov->flag_lock);
1141 CRYPTO_THREAD_unlock(store->lock);
1142 /*
1143 * This can be done outside the lock. We tolerate other threads getting
1144 * the wrong result briefly when creating OSSL_DECODER_CTXs.
1145 */
1146 #ifndef FIPS_MODULE
1147 if (count < 1)
1148 ossl_decoder_cache_flush(prov->libctx);
1149 #endif
1150 }
1151 #ifndef FIPS_MODULE
1152 if (freeparent)
1153 ossl_provider_free_parent(prov, 1);
1154 #endif
1155
1156 /* We don't deinit here, that's done in ossl_provider_free() */
1157 return count;
1158 }
1159
1160 /*
1161 * Activate a provider.
1162 * Return -1 on failure and the activation count on success
1163 */
provider_activate(OSSL_PROVIDER * prov,int lock,int upcalls)1164 static int provider_activate(OSSL_PROVIDER *prov, int lock, int upcalls)
1165 {
1166 int count = -1;
1167 struct provider_store_st *store;
1168 int ret = 1;
1169
1170 store = prov->store;
1171 /*
1172 * If the provider hasn't been added to the store, then we don't need
1173 * any locks because we've not shared it with other threads.
1174 */
1175 if (store == NULL) {
1176 lock = 0;
1177 if (!provider_init(prov))
1178 return -1;
1179 }
1180
1181 #ifndef FIPS_MODULE
1182 if (prov->ischild && upcalls && !ossl_provider_up_ref_parent(prov, 1))
1183 return -1;
1184 #endif
1185
1186 if (lock && !CRYPTO_THREAD_read_lock(store->lock)) {
1187 #ifndef FIPS_MODULE
1188 if (prov->ischild && upcalls)
1189 ossl_provider_free_parent(prov, 1);
1190 #endif
1191 return -1;
1192 }
1193
1194 if (lock && !CRYPTO_THREAD_write_lock(prov->flag_lock)) {
1195 CRYPTO_THREAD_unlock(store->lock);
1196 #ifndef FIPS_MODULE
1197 if (prov->ischild && upcalls)
1198 ossl_provider_free_parent(prov, 1);
1199 #endif
1200 return -1;
1201 }
1202 if (CRYPTO_atomic_add(&prov->activatecnt, 1, &count, prov->activatecnt_lock)) {
1203 prov->flag_activated = 1;
1204
1205 if (count == 1 && store != NULL) {
1206 ret = create_provider_children(prov);
1207 }
1208 }
1209 if (lock) {
1210 CRYPTO_THREAD_unlock(prov->flag_lock);
1211 CRYPTO_THREAD_unlock(store->lock);
1212 /*
1213 * This can be done outside the lock. We tolerate other threads getting
1214 * the wrong result briefly when creating OSSL_DECODER_CTXs.
1215 */
1216 #ifndef FIPS_MODULE
1217 if (count == 1)
1218 ossl_decoder_cache_flush(prov->libctx);
1219 #endif
1220 }
1221
1222 if (!ret)
1223 return -1;
1224
1225 return count;
1226 }
1227
provider_flush_store_cache(const OSSL_PROVIDER * prov)1228 static int provider_flush_store_cache(const OSSL_PROVIDER *prov)
1229 {
1230 struct provider_store_st *store;
1231 int freeing;
1232
1233 if ((store = get_provider_store(prov->libctx)) == NULL)
1234 return 0;
1235
1236 if (!CRYPTO_THREAD_read_lock(store->lock))
1237 return 0;
1238 freeing = store->freeing;
1239 CRYPTO_THREAD_unlock(store->lock);
1240
1241 if (!freeing) {
1242 int acc
1243 = evp_method_store_cache_flush(prov->libctx)
1244 #ifndef FIPS_MODULE
1245 + ossl_encoder_store_cache_flush(prov->libctx)
1246 + ossl_decoder_store_cache_flush(prov->libctx)
1247 + ossl_store_loader_store_cache_flush(prov->libctx)
1248 #endif
1249 ;
1250
1251 #ifndef FIPS_MODULE
1252 return acc == 4;
1253 #else
1254 return acc == 1;
1255 #endif
1256 }
1257 return 1;
1258 }
1259
provider_remove_store_methods(OSSL_PROVIDER * prov)1260 static int provider_remove_store_methods(OSSL_PROVIDER *prov)
1261 {
1262 struct provider_store_st *store;
1263 int freeing;
1264
1265 if ((store = get_provider_store(prov->libctx)) == NULL)
1266 return 0;
1267
1268 if (!CRYPTO_THREAD_read_lock(store->lock))
1269 return 0;
1270 freeing = store->freeing;
1271 CRYPTO_THREAD_unlock(store->lock);
1272
1273 if (!freeing) {
1274 int acc;
1275
1276 if (!CRYPTO_THREAD_write_lock(prov->opbits_lock))
1277 return 0;
1278 OPENSSL_free(prov->operation_bits);
1279 prov->operation_bits = NULL;
1280 prov->operation_bits_sz = 0;
1281 CRYPTO_THREAD_unlock(prov->opbits_lock);
1282
1283 acc = evp_method_store_remove_all_provided(prov)
1284 #ifndef FIPS_MODULE
1285 + ossl_encoder_store_remove_all_provided(prov)
1286 + ossl_decoder_store_remove_all_provided(prov)
1287 + ossl_store_loader_store_remove_all_provided(prov)
1288 #endif
1289 ;
1290
1291 #ifndef FIPS_MODULE
1292 return acc == 4;
1293 #else
1294 return acc == 1;
1295 #endif
1296 }
1297 return 1;
1298 }
1299
ossl_provider_activate(OSSL_PROVIDER * prov,int upcalls,int aschild)1300 int ossl_provider_activate(OSSL_PROVIDER *prov, int upcalls, int aschild)
1301 {
1302 int count;
1303
1304 if (prov == NULL)
1305 return 0;
1306 #ifndef FIPS_MODULE
1307 /*
1308 * If aschild is true, then we only actually do the activation if the
1309 * provider is a child. If its not, this is still success.
1310 */
1311 if (aschild && !prov->ischild)
1312 return 1;
1313 #endif
1314 if ((count = provider_activate(prov, 1, upcalls)) > 0)
1315 return count == 1 ? provider_flush_store_cache(prov) : 1;
1316
1317 return 0;
1318 }
1319
ossl_provider_deactivate(OSSL_PROVIDER * prov,int removechildren)1320 int ossl_provider_deactivate(OSSL_PROVIDER *prov, int removechildren)
1321 {
1322 int count;
1323
1324 if (prov == NULL
1325 || (count = provider_deactivate(prov, 1, removechildren)) < 0)
1326 return 0;
1327 return count == 0 ? provider_remove_store_methods(prov) : 1;
1328 }
1329
ossl_provider_ctx(const OSSL_PROVIDER * prov)1330 void *ossl_provider_ctx(const OSSL_PROVIDER *prov)
1331 {
1332 return prov != NULL ? prov->provctx : NULL;
1333 }
1334
1335 /*
1336 * This function only does something once when store->use_fallbacks == 1,
1337 * and then sets store->use_fallbacks = 0, so the second call and so on is
1338 * effectively a no-op.
1339 */
provider_activate_fallbacks(struct provider_store_st * store)1340 static int provider_activate_fallbacks(struct provider_store_st *store)
1341 {
1342 int use_fallbacks;
1343 int activated_fallback_count = 0;
1344 int ret = 0;
1345 const OSSL_PROVIDER_INFO *p;
1346
1347 if (!CRYPTO_THREAD_read_lock(store->lock))
1348 return 0;
1349 use_fallbacks = store->use_fallbacks;
1350 CRYPTO_THREAD_unlock(store->lock);
1351 if (!use_fallbacks)
1352 return 1;
1353
1354 if (!CRYPTO_THREAD_write_lock(store->lock))
1355 return 0;
1356 /* Check again, just in case another thread changed it */
1357 use_fallbacks = store->use_fallbacks;
1358 if (!use_fallbacks) {
1359 CRYPTO_THREAD_unlock(store->lock);
1360 return 1;
1361 }
1362
1363 for (p = ossl_predefined_providers; p->name != NULL; p++) {
1364 OSSL_PROVIDER *prov = NULL;
1365
1366 if (!p->is_fallback)
1367 continue;
1368 /*
1369 * We use the internal constructor directly here,
1370 * otherwise we get a call loop
1371 */
1372 prov = provider_new(p->name, p->init, NULL);
1373 if (prov == NULL)
1374 goto err;
1375 prov->libctx = store->libctx;
1376 #ifndef FIPS_MODULE
1377 prov->error_lib = ERR_get_next_error_library();
1378 #endif
1379
1380 /*
1381 * We are calling provider_activate while holding the store lock. This
1382 * means the init function will be called while holding a lock. Normally
1383 * we try to avoid calling a user callback while holding a lock.
1384 * However, fallbacks are never third party providers so we accept this.
1385 */
1386 if (provider_activate(prov, 0, 0) < 0) {
1387 ossl_provider_free(prov);
1388 goto err;
1389 }
1390 prov->store = store;
1391 if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
1392 ossl_provider_free(prov);
1393 goto err;
1394 }
1395 activated_fallback_count++;
1396 }
1397
1398 if (activated_fallback_count > 0) {
1399 store->use_fallbacks = 0;
1400 ret = 1;
1401 }
1402 err:
1403 CRYPTO_THREAD_unlock(store->lock);
1404 return ret;
1405 }
1406
ossl_provider_doall_activated(OSSL_LIB_CTX * ctx,int (* cb)(OSSL_PROVIDER * provider,void * cbdata),void * cbdata)1407 int ossl_provider_doall_activated(OSSL_LIB_CTX *ctx,
1408 int (*cb)(OSSL_PROVIDER *provider,
1409 void *cbdata),
1410 void *cbdata)
1411 {
1412 int ret = 0, curr, max, ref = 0;
1413 struct provider_store_st *store = get_provider_store(ctx);
1414 STACK_OF(OSSL_PROVIDER) *provs = NULL;
1415
1416 #if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_AUTOLOAD_CONFIG)
1417 /*
1418 * Make sure any providers are loaded from config before we try to use
1419 * them.
1420 */
1421 if (ossl_lib_ctx_is_default(ctx))
1422 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
1423 #endif
1424
1425 if (store == NULL)
1426 return 1;
1427 if (!provider_activate_fallbacks(store))
1428 return 0;
1429
1430 /*
1431 * Under lock, grab a copy of the provider list and up_ref each
1432 * provider so that they don't disappear underneath us.
1433 */
1434 if (!CRYPTO_THREAD_read_lock(store->lock))
1435 return 0;
1436 provs = sk_OSSL_PROVIDER_dup(store->providers);
1437 if (provs == NULL) {
1438 CRYPTO_THREAD_unlock(store->lock);
1439 return 0;
1440 }
1441 max = sk_OSSL_PROVIDER_num(provs);
1442 /*
1443 * We work backwards through the stack so that we can safely delete items
1444 * as we go.
1445 */
1446 for (curr = max - 1; curr >= 0; curr--) {
1447 OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(provs, curr);
1448
1449 if (!CRYPTO_THREAD_read_lock(prov->flag_lock))
1450 goto err_unlock;
1451 if (prov->flag_activated) {
1452 /*
1453 * We call CRYPTO_UP_REF directly rather than ossl_provider_up_ref
1454 * to avoid upping the ref count on the parent provider, which we
1455 * must not do while holding locks.
1456 */
1457 if (CRYPTO_UP_REF(&prov->refcnt, &ref) <= 0) {
1458 CRYPTO_THREAD_unlock(prov->flag_lock);
1459 goto err_unlock;
1460 }
1461 /*
1462 * It's already activated, but we up the activated count to ensure
1463 * it remains activated until after we've called the user callback.
1464 * In theory this could mean the parent provider goes inactive,
1465 * whilst still activated in the child for a short period. That's ok.
1466 */
1467 if (!CRYPTO_atomic_add(&prov->activatecnt, 1, &ref,
1468 prov->activatecnt_lock)) {
1469 CRYPTO_DOWN_REF(&prov->refcnt, &ref);
1470 CRYPTO_THREAD_unlock(prov->flag_lock);
1471 goto err_unlock;
1472 }
1473 } else {
1474 sk_OSSL_PROVIDER_delete(provs, curr);
1475 max--;
1476 }
1477 CRYPTO_THREAD_unlock(prov->flag_lock);
1478 }
1479 CRYPTO_THREAD_unlock(store->lock);
1480
1481 /*
1482 * Now, we sweep through all providers not under lock
1483 */
1484 for (curr = 0; curr < max; curr++) {
1485 OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(provs, curr);
1486
1487 if (!cb(prov, cbdata)) {
1488 curr = -1;
1489 goto finish;
1490 }
1491 }
1492 curr = -1;
1493
1494 ret = 1;
1495 goto finish;
1496
1497 err_unlock:
1498 CRYPTO_THREAD_unlock(store->lock);
1499 finish:
1500 /*
1501 * The pop_free call doesn't do what we want on an error condition. We
1502 * either start from the first item in the stack, or part way through if
1503 * we only processed some of the items.
1504 */
1505 for (curr++; curr < max; curr++) {
1506 OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(provs, curr);
1507
1508 if (!CRYPTO_atomic_add(&prov->activatecnt, -1, &ref,
1509 prov->activatecnt_lock)) {
1510 ret = 0;
1511 continue;
1512 }
1513 if (ref < 1) {
1514 /*
1515 * Looks like we need to deactivate properly. We could just have
1516 * done this originally, but it involves taking a write lock so
1517 * we avoid it. We up the count again and do a full deactivation
1518 */
1519 if (CRYPTO_atomic_add(&prov->activatecnt, 1, &ref,
1520 prov->activatecnt_lock))
1521 provider_deactivate(prov, 0, 1);
1522 else
1523 ret = 0;
1524 }
1525 /*
1526 * As above where we did the up-ref, we don't call ossl_provider_free
1527 * to avoid making upcalls. There should always be at least one ref
1528 * to the provider in the store, so this should never drop to 0.
1529 */
1530 if (!CRYPTO_DOWN_REF(&prov->refcnt, &ref)) {
1531 ret = 0;
1532 continue;
1533 }
1534 /*
1535 * Not much we can do if this assert ever fails. So we don't use
1536 * ossl_assert here.
1537 */
1538 assert(ref > 0);
1539 }
1540 sk_OSSL_PROVIDER_free(provs);
1541 return ret;
1542 }
1543
OSSL_PROVIDER_available(OSSL_LIB_CTX * libctx,const char * name)1544 int OSSL_PROVIDER_available(OSSL_LIB_CTX *libctx, const char *name)
1545 {
1546 OSSL_PROVIDER *prov = NULL;
1547 int available = 0;
1548 struct provider_store_st *store = get_provider_store(libctx);
1549
1550 if (store == NULL || !provider_activate_fallbacks(store))
1551 return 0;
1552
1553 prov = ossl_provider_find(libctx, name, 0);
1554 if (prov != NULL) {
1555 if (!CRYPTO_THREAD_read_lock(prov->flag_lock))
1556 return 0;
1557 available = prov->flag_activated;
1558 CRYPTO_THREAD_unlock(prov->flag_lock);
1559 ossl_provider_free(prov);
1560 }
1561 return available;
1562 }
1563
1564 /* Getters of Provider Object data */
ossl_provider_name(const OSSL_PROVIDER * prov)1565 const char *ossl_provider_name(const OSSL_PROVIDER *prov)
1566 {
1567 return prov->name;
1568 }
1569
ossl_provider_dso(const OSSL_PROVIDER * prov)1570 const DSO *ossl_provider_dso(const OSSL_PROVIDER *prov)
1571 {
1572 return prov->module;
1573 }
1574
ossl_provider_module_name(const OSSL_PROVIDER * prov)1575 const char *ossl_provider_module_name(const OSSL_PROVIDER *prov)
1576 {
1577 #ifdef FIPS_MODULE
1578 return NULL;
1579 #else
1580 return DSO_get_filename(prov->module);
1581 #endif
1582 }
1583
ossl_provider_module_path(const OSSL_PROVIDER * prov)1584 const char *ossl_provider_module_path(const OSSL_PROVIDER *prov)
1585 {
1586 #ifdef FIPS_MODULE
1587 return NULL;
1588 #else
1589 /* FIXME: Ensure it's a full path */
1590 return DSO_get_filename(prov->module);
1591 #endif
1592 }
1593
ossl_provider_prov_ctx(const OSSL_PROVIDER * prov)1594 void *ossl_provider_prov_ctx(const OSSL_PROVIDER *prov)
1595 {
1596 if (prov != NULL)
1597 return prov->provctx;
1598
1599 return NULL;
1600 }
1601
ossl_provider_get0_dispatch(const OSSL_PROVIDER * prov)1602 const OSSL_DISPATCH *ossl_provider_get0_dispatch(const OSSL_PROVIDER *prov)
1603 {
1604 if (prov != NULL)
1605 return prov->dispatch;
1606
1607 return NULL;
1608 }
1609
ossl_provider_libctx(const OSSL_PROVIDER * prov)1610 OSSL_LIB_CTX *ossl_provider_libctx(const OSSL_PROVIDER *prov)
1611 {
1612 return prov != NULL ? prov->libctx : NULL;
1613 }
1614
1615 /* Wrappers around calls to the provider */
ossl_provider_teardown(const OSSL_PROVIDER * prov)1616 void ossl_provider_teardown(const OSSL_PROVIDER *prov)
1617 {
1618 if (prov->teardown != NULL
1619 #ifndef FIPS_MODULE
1620 && !prov->ischild
1621 #endif
1622 )
1623 prov->teardown(prov->provctx);
1624 }
1625
ossl_provider_gettable_params(const OSSL_PROVIDER * prov)1626 const OSSL_PARAM *ossl_provider_gettable_params(const OSSL_PROVIDER *prov)
1627 {
1628 return prov->gettable_params == NULL
1629 ? NULL : prov->gettable_params(prov->provctx);
1630 }
1631
ossl_provider_get_params(const OSSL_PROVIDER * prov,OSSL_PARAM params[])1632 int ossl_provider_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
1633 {
1634 return prov->get_params == NULL
1635 ? 0 : prov->get_params(prov->provctx, params);
1636 }
1637
ossl_provider_self_test(const OSSL_PROVIDER * prov)1638 int ossl_provider_self_test(const OSSL_PROVIDER *prov)
1639 {
1640 int ret;
1641
1642 if (prov->self_test == NULL)
1643 return 1;
1644 ret = prov->self_test(prov->provctx);
1645 if (ret == 0)
1646 (void)provider_remove_store_methods((OSSL_PROVIDER *)prov);
1647 return ret;
1648 }
1649
ossl_provider_get_capabilities(const OSSL_PROVIDER * prov,const char * capability,OSSL_CALLBACK * cb,void * arg)1650 int ossl_provider_get_capabilities(const OSSL_PROVIDER *prov,
1651 const char *capability,
1652 OSSL_CALLBACK *cb,
1653 void *arg)
1654 {
1655 return prov->get_capabilities == NULL
1656 ? 1 : prov->get_capabilities(prov->provctx, capability, cb, arg);
1657 }
1658
ossl_provider_query_operation(const OSSL_PROVIDER * prov,int operation_id,int * no_cache)1659 const OSSL_ALGORITHM *ossl_provider_query_operation(const OSSL_PROVIDER *prov,
1660 int operation_id,
1661 int *no_cache)
1662 {
1663 const OSSL_ALGORITHM *res;
1664
1665 if (prov->query_operation == NULL)
1666 return NULL;
1667 res = prov->query_operation(prov->provctx, operation_id, no_cache);
1668 #if defined(OPENSSL_NO_CACHED_FETCH)
1669 /* Forcing the non-caching of queries */
1670 if (no_cache != NULL)
1671 *no_cache = 1;
1672 #endif
1673 return res;
1674 }
1675
ossl_provider_unquery_operation(const OSSL_PROVIDER * prov,int operation_id,const OSSL_ALGORITHM * algs)1676 void ossl_provider_unquery_operation(const OSSL_PROVIDER *prov,
1677 int operation_id,
1678 const OSSL_ALGORITHM *algs)
1679 {
1680 if (prov->unquery_operation != NULL)
1681 prov->unquery_operation(prov->provctx, operation_id, algs);
1682 }
1683
ossl_provider_set_operation_bit(OSSL_PROVIDER * provider,size_t bitnum)1684 int ossl_provider_set_operation_bit(OSSL_PROVIDER *provider, size_t bitnum)
1685 {
1686 size_t byte = bitnum / 8;
1687 unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
1688
1689 if (!CRYPTO_THREAD_write_lock(provider->opbits_lock))
1690 return 0;
1691 if (provider->operation_bits_sz <= byte) {
1692 unsigned char *tmp = OPENSSL_realloc(provider->operation_bits,
1693 byte + 1);
1694
1695 if (tmp == NULL) {
1696 CRYPTO_THREAD_unlock(provider->opbits_lock);
1697 return 0;
1698 }
1699 provider->operation_bits = tmp;
1700 memset(provider->operation_bits + provider->operation_bits_sz,
1701 '\0', byte + 1 - provider->operation_bits_sz);
1702 provider->operation_bits_sz = byte + 1;
1703 }
1704 provider->operation_bits[byte] |= bit;
1705 CRYPTO_THREAD_unlock(provider->opbits_lock);
1706 return 1;
1707 }
1708
ossl_provider_test_operation_bit(OSSL_PROVIDER * provider,size_t bitnum,int * result)1709 int ossl_provider_test_operation_bit(OSSL_PROVIDER *provider, size_t bitnum,
1710 int *result)
1711 {
1712 size_t byte = bitnum / 8;
1713 unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
1714
1715 if (!ossl_assert(result != NULL)) {
1716 ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
1717 return 0;
1718 }
1719
1720 *result = 0;
1721 if (!CRYPTO_THREAD_read_lock(provider->opbits_lock))
1722 return 0;
1723 if (provider->operation_bits_sz > byte)
1724 *result = ((provider->operation_bits[byte] & bit) != 0);
1725 CRYPTO_THREAD_unlock(provider->opbits_lock);
1726 return 1;
1727 }
1728
1729 #ifndef FIPS_MODULE
ossl_provider_get_parent(OSSL_PROVIDER * prov)1730 const OSSL_CORE_HANDLE *ossl_provider_get_parent(OSSL_PROVIDER *prov)
1731 {
1732 return prov->handle;
1733 }
1734
ossl_provider_is_child(const OSSL_PROVIDER * prov)1735 int ossl_provider_is_child(const OSSL_PROVIDER *prov)
1736 {
1737 return prov->ischild;
1738 }
1739
ossl_provider_set_child(OSSL_PROVIDER * prov,const OSSL_CORE_HANDLE * handle)1740 int ossl_provider_set_child(OSSL_PROVIDER *prov, const OSSL_CORE_HANDLE *handle)
1741 {
1742 prov->handle = handle;
1743 prov->ischild = 1;
1744
1745 return 1;
1746 }
1747
ossl_provider_default_props_update(OSSL_LIB_CTX * libctx,const char * props)1748 int ossl_provider_default_props_update(OSSL_LIB_CTX *libctx, const char *props)
1749 {
1750 #ifndef FIPS_MODULE
1751 struct provider_store_st *store = NULL;
1752 int i, max;
1753 OSSL_PROVIDER_CHILD_CB *child_cb;
1754
1755 if ((store = get_provider_store(libctx)) == NULL)
1756 return 0;
1757
1758 if (!CRYPTO_THREAD_read_lock(store->lock))
1759 return 0;
1760
1761 max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
1762 for (i = 0; i < max; i++) {
1763 child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
1764 child_cb->global_props_cb(props, child_cb->cbdata);
1765 }
1766
1767 CRYPTO_THREAD_unlock(store->lock);
1768 #endif
1769 return 1;
1770 }
1771
ossl_provider_register_child_cb(const OSSL_CORE_HANDLE * handle,int (* create_cb)(const OSSL_CORE_HANDLE * provider,void * cbdata),int (* remove_cb)(const OSSL_CORE_HANDLE * provider,void * cbdata),int (* global_props_cb)(const char * props,void * cbdata),void * cbdata)1772 static int ossl_provider_register_child_cb(const OSSL_CORE_HANDLE *handle,
1773 int (*create_cb)(
1774 const OSSL_CORE_HANDLE *provider,
1775 void *cbdata),
1776 int (*remove_cb)(
1777 const OSSL_CORE_HANDLE *provider,
1778 void *cbdata),
1779 int (*global_props_cb)(
1780 const char *props,
1781 void *cbdata),
1782 void *cbdata)
1783 {
1784 /*
1785 * This is really an OSSL_PROVIDER that we created and cast to
1786 * OSSL_CORE_HANDLE originally. Therefore it is safe to cast it back.
1787 */
1788 OSSL_PROVIDER *thisprov = (OSSL_PROVIDER *)handle;
1789 OSSL_PROVIDER *prov;
1790 OSSL_LIB_CTX *libctx = thisprov->libctx;
1791 struct provider_store_st *store = NULL;
1792 int ret = 0, i, max;
1793 OSSL_PROVIDER_CHILD_CB *child_cb;
1794 char *propsstr = NULL;
1795
1796 if ((store = get_provider_store(libctx)) == NULL)
1797 return 0;
1798
1799 child_cb = OPENSSL_malloc(sizeof(*child_cb));
1800 if (child_cb == NULL)
1801 return 0;
1802 child_cb->prov = thisprov;
1803 child_cb->create_cb = create_cb;
1804 child_cb->remove_cb = remove_cb;
1805 child_cb->global_props_cb = global_props_cb;
1806 child_cb->cbdata = cbdata;
1807
1808 if (!CRYPTO_THREAD_write_lock(store->lock)) {
1809 OPENSSL_free(child_cb);
1810 return 0;
1811 }
1812 propsstr = evp_get_global_properties_str(libctx, 0);
1813
1814 if (propsstr != NULL) {
1815 global_props_cb(propsstr, cbdata);
1816 OPENSSL_free(propsstr);
1817 }
1818 max = sk_OSSL_PROVIDER_num(store->providers);
1819 for (i = 0; i < max; i++) {
1820 int activated;
1821
1822 prov = sk_OSSL_PROVIDER_value(store->providers, i);
1823
1824 if (!CRYPTO_THREAD_read_lock(prov->flag_lock))
1825 break;
1826 activated = prov->flag_activated;
1827 CRYPTO_THREAD_unlock(prov->flag_lock);
1828 /*
1829 * We hold the store lock while calling the user callback. This means
1830 * that the user callback must be short and simple and not do anything
1831 * likely to cause a deadlock. We don't hold the flag_lock during this
1832 * call. In theory this means that another thread could deactivate it
1833 * while we are calling create. This is ok because the other thread
1834 * will also call remove_cb, but won't be able to do so until we release
1835 * the store lock.
1836 */
1837 if (activated && !create_cb((OSSL_CORE_HANDLE *)prov, cbdata))
1838 break;
1839 }
1840 if (i == max) {
1841 /* Success */
1842 ret = sk_OSSL_PROVIDER_CHILD_CB_push(store->child_cbs, child_cb);
1843 }
1844 if (i != max || ret <= 0) {
1845 /* Failed during creation. Remove everything we just added */
1846 for (; i >= 0; i--) {
1847 prov = sk_OSSL_PROVIDER_value(store->providers, i);
1848 remove_cb((OSSL_CORE_HANDLE *)prov, cbdata);
1849 }
1850 OPENSSL_free(child_cb);
1851 ret = 0;
1852 }
1853 CRYPTO_THREAD_unlock(store->lock);
1854
1855 return ret;
1856 }
1857
ossl_provider_deregister_child_cb(const OSSL_CORE_HANDLE * handle)1858 static void ossl_provider_deregister_child_cb(const OSSL_CORE_HANDLE *handle)
1859 {
1860 /*
1861 * This is really an OSSL_PROVIDER that we created and cast to
1862 * OSSL_CORE_HANDLE originally. Therefore it is safe to cast it back.
1863 */
1864 OSSL_PROVIDER *thisprov = (OSSL_PROVIDER *)handle;
1865 OSSL_LIB_CTX *libctx = thisprov->libctx;
1866 struct provider_store_st *store = NULL;
1867 int i, max;
1868 OSSL_PROVIDER_CHILD_CB *child_cb;
1869
1870 if ((store = get_provider_store(libctx)) == NULL)
1871 return;
1872
1873 if (!CRYPTO_THREAD_write_lock(store->lock))
1874 return;
1875 max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
1876 for (i = 0; i < max; i++) {
1877 child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
1878 if (child_cb->prov == thisprov) {
1879 /* Found an entry */
1880 sk_OSSL_PROVIDER_CHILD_CB_delete(store->child_cbs, i);
1881 OPENSSL_free(child_cb);
1882 break;
1883 }
1884 }
1885 CRYPTO_THREAD_unlock(store->lock);
1886 }
1887 #endif
1888
1889 /*-
1890 * Core functions for the provider
1891 * ===============================
1892 *
1893 * This is the set of functions that the core makes available to the provider
1894 */
1895
1896 /*
1897 * This returns a list of Provider Object parameters with their types, for
1898 * discovery. We do not expect that many providers will use this, but one
1899 * never knows.
1900 */
1901 static const OSSL_PARAM param_types[] = {
1902 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
1903 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_PROV_NAME, OSSL_PARAM_UTF8_PTR,
1904 NULL, 0),
1905 #ifndef FIPS_MODULE
1906 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_MODULE_FILENAME, OSSL_PARAM_UTF8_PTR,
1907 NULL, 0),
1908 #endif
1909 OSSL_PARAM_END
1910 };
1911
1912 /*
1913 * Forward declare all the functions that are provided aa dispatch.
1914 * This ensures that the compiler will complain if they aren't defined
1915 * with the correct signature.
1916 */
1917 static OSSL_FUNC_core_gettable_params_fn core_gettable_params;
1918 static OSSL_FUNC_core_get_params_fn core_get_params;
1919 static OSSL_FUNC_core_get_libctx_fn core_get_libctx;
1920 static OSSL_FUNC_core_thread_start_fn core_thread_start;
1921 #ifndef FIPS_MODULE
1922 static OSSL_FUNC_core_new_error_fn core_new_error;
1923 static OSSL_FUNC_core_set_error_debug_fn core_set_error_debug;
1924 static OSSL_FUNC_core_vset_error_fn core_vset_error;
1925 static OSSL_FUNC_core_set_error_mark_fn core_set_error_mark;
1926 static OSSL_FUNC_core_clear_last_error_mark_fn core_clear_last_error_mark;
1927 static OSSL_FUNC_core_pop_error_to_mark_fn core_pop_error_to_mark;
1928 OSSL_FUNC_BIO_new_file_fn ossl_core_bio_new_file;
1929 OSSL_FUNC_BIO_new_membuf_fn ossl_core_bio_new_mem_buf;
1930 OSSL_FUNC_BIO_read_ex_fn ossl_core_bio_read_ex;
1931 OSSL_FUNC_BIO_write_ex_fn ossl_core_bio_write_ex;
1932 OSSL_FUNC_BIO_gets_fn ossl_core_bio_gets;
1933 OSSL_FUNC_BIO_puts_fn ossl_core_bio_puts;
1934 OSSL_FUNC_BIO_up_ref_fn ossl_core_bio_up_ref;
1935 OSSL_FUNC_BIO_free_fn ossl_core_bio_free;
1936 OSSL_FUNC_BIO_vprintf_fn ossl_core_bio_vprintf;
1937 OSSL_FUNC_BIO_vsnprintf_fn BIO_vsnprintf;
1938 static OSSL_FUNC_indicator_cb_fn core_indicator_get_callback;
1939 static OSSL_FUNC_self_test_cb_fn core_self_test_get_callback;
1940 static OSSL_FUNC_get_entropy_fn rand_get_entropy;
1941 static OSSL_FUNC_get_user_entropy_fn rand_get_user_entropy;
1942 static OSSL_FUNC_cleanup_entropy_fn rand_cleanup_entropy;
1943 static OSSL_FUNC_cleanup_user_entropy_fn rand_cleanup_user_entropy;
1944 static OSSL_FUNC_get_nonce_fn rand_get_nonce;
1945 static OSSL_FUNC_get_user_nonce_fn rand_get_user_nonce;
1946 static OSSL_FUNC_cleanup_nonce_fn rand_cleanup_nonce;
1947 static OSSL_FUNC_cleanup_user_nonce_fn rand_cleanup_user_nonce;
1948 #endif
1949 OSSL_FUNC_CRYPTO_malloc_fn CRYPTO_malloc;
1950 OSSL_FUNC_CRYPTO_zalloc_fn CRYPTO_zalloc;
1951 OSSL_FUNC_CRYPTO_free_fn CRYPTO_free;
1952 OSSL_FUNC_CRYPTO_clear_free_fn CRYPTO_clear_free;
1953 OSSL_FUNC_CRYPTO_realloc_fn CRYPTO_realloc;
1954 OSSL_FUNC_CRYPTO_clear_realloc_fn CRYPTO_clear_realloc;
1955 OSSL_FUNC_CRYPTO_secure_malloc_fn CRYPTO_secure_malloc;
1956 OSSL_FUNC_CRYPTO_secure_zalloc_fn CRYPTO_secure_zalloc;
1957 OSSL_FUNC_CRYPTO_secure_free_fn CRYPTO_secure_free;
1958 OSSL_FUNC_CRYPTO_secure_clear_free_fn CRYPTO_secure_clear_free;
1959 OSSL_FUNC_CRYPTO_secure_allocated_fn CRYPTO_secure_allocated;
1960 OSSL_FUNC_OPENSSL_cleanse_fn OPENSSL_cleanse;
1961 #ifndef FIPS_MODULE
1962 OSSL_FUNC_provider_register_child_cb_fn ossl_provider_register_child_cb;
1963 OSSL_FUNC_provider_deregister_child_cb_fn ossl_provider_deregister_child_cb;
1964 static OSSL_FUNC_provider_name_fn core_provider_get0_name;
1965 static OSSL_FUNC_provider_get0_provider_ctx_fn core_provider_get0_provider_ctx;
1966 static OSSL_FUNC_provider_get0_dispatch_fn core_provider_get0_dispatch;
1967 static OSSL_FUNC_provider_up_ref_fn core_provider_up_ref_intern;
1968 static OSSL_FUNC_provider_free_fn core_provider_free_intern;
1969 static OSSL_FUNC_core_obj_add_sigid_fn core_obj_add_sigid;
1970 static OSSL_FUNC_core_obj_create_fn core_obj_create;
1971 #endif
1972
core_gettable_params(const OSSL_CORE_HANDLE * handle)1973 static const OSSL_PARAM *core_gettable_params(const OSSL_CORE_HANDLE *handle)
1974 {
1975 return param_types;
1976 }
1977
core_get_params(const OSSL_CORE_HANDLE * handle,OSSL_PARAM params[])1978 static int core_get_params(const OSSL_CORE_HANDLE *handle, OSSL_PARAM params[])
1979 {
1980 int i;
1981 OSSL_PARAM *p;
1982 /*
1983 * We created this object originally and we know it is actually an
1984 * OSSL_PROVIDER *, so the cast is safe
1985 */
1986 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1987
1988 if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_VERSION)) != NULL)
1989 OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR);
1990 if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_PROV_NAME)) != NULL)
1991 OSSL_PARAM_set_utf8_ptr(p, prov->name);
1992
1993 #ifndef FIPS_MODULE
1994 if ((p = OSSL_PARAM_locate(params,
1995 OSSL_PROV_PARAM_CORE_MODULE_FILENAME)) != NULL)
1996 OSSL_PARAM_set_utf8_ptr(p, ossl_provider_module_path(prov));
1997 #endif
1998
1999 if (prov->parameters == NULL)
2000 return 1;
2001
2002 for (i = 0; i < sk_INFOPAIR_num(prov->parameters); i++) {
2003 INFOPAIR *pair = sk_INFOPAIR_value(prov->parameters, i);
2004
2005 if ((p = OSSL_PARAM_locate(params, pair->name)) != NULL)
2006 OSSL_PARAM_set_utf8_ptr(p, pair->value);
2007 }
2008 return 1;
2009 }
2010
core_get_libctx(const OSSL_CORE_HANDLE * handle)2011 static OPENSSL_CORE_CTX *core_get_libctx(const OSSL_CORE_HANDLE *handle)
2012 {
2013 /*
2014 * We created this object originally and we know it is actually an
2015 * OSSL_PROVIDER *, so the cast is safe
2016 */
2017 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
2018
2019 /*
2020 * Using ossl_provider_libctx would be wrong as that returns
2021 * NULL for |prov| == NULL and NULL libctx has a special meaning
2022 * that does not apply here. Here |prov| == NULL can happen only in
2023 * case of a coding error.
2024 */
2025 assert(prov != NULL);
2026 return (OPENSSL_CORE_CTX *)prov->libctx;
2027 }
2028
core_thread_start(const OSSL_CORE_HANDLE * handle,OSSL_thread_stop_handler_fn handfn,void * arg)2029 static int core_thread_start(const OSSL_CORE_HANDLE *handle,
2030 OSSL_thread_stop_handler_fn handfn,
2031 void *arg)
2032 {
2033 /*
2034 * We created this object originally and we know it is actually an
2035 * OSSL_PROVIDER *, so the cast is safe
2036 */
2037 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
2038
2039 return ossl_init_thread_start(prov, arg, handfn);
2040 }
2041
2042 /*
2043 * The FIPS module inner provider doesn't implement these. They aren't
2044 * needed there, since the FIPS module upcalls are always the outer provider
2045 * ones.
2046 */
2047 #ifndef FIPS_MODULE
2048 /*
2049 * These error functions should use |handle| to select the proper
2050 * library context to report in the correct error stack if error
2051 * stacks become tied to the library context.
2052 * We cannot currently do that since there's no support for it in the
2053 * ERR subsystem.
2054 */
core_new_error(const OSSL_CORE_HANDLE * handle)2055 static void core_new_error(const OSSL_CORE_HANDLE *handle)
2056 {
2057 ERR_new();
2058 }
2059
core_set_error_debug(const OSSL_CORE_HANDLE * handle,const char * file,int line,const char * func)2060 static void core_set_error_debug(const OSSL_CORE_HANDLE *handle,
2061 const char *file, int line, const char *func)
2062 {
2063 ERR_set_debug(file, line, func);
2064 }
2065
core_vset_error(const OSSL_CORE_HANDLE * handle,uint32_t reason,const char * fmt,va_list args)2066 static void core_vset_error(const OSSL_CORE_HANDLE *handle,
2067 uint32_t reason, const char *fmt, va_list args)
2068 {
2069 /*
2070 * We created this object originally and we know it is actually an
2071 * OSSL_PROVIDER *, so the cast is safe
2072 */
2073 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
2074
2075 /*
2076 * If the uppermost 8 bits are non-zero, it's an OpenSSL library
2077 * error and will be treated as such. Otherwise, it's a new style
2078 * provider error and will be treated as such.
2079 */
2080 if (ERR_GET_LIB(reason) != 0) {
2081 ERR_vset_error(ERR_GET_LIB(reason), ERR_GET_REASON(reason), fmt, args);
2082 } else {
2083 ERR_vset_error(prov->error_lib, (int)reason, fmt, args);
2084 }
2085 }
2086
core_set_error_mark(const OSSL_CORE_HANDLE * handle)2087 static int core_set_error_mark(const OSSL_CORE_HANDLE *handle)
2088 {
2089 return ERR_set_mark();
2090 }
2091
core_clear_last_error_mark(const OSSL_CORE_HANDLE * handle)2092 static int core_clear_last_error_mark(const OSSL_CORE_HANDLE *handle)
2093 {
2094 return ERR_clear_last_mark();
2095 }
2096
core_pop_error_to_mark(const OSSL_CORE_HANDLE * handle)2097 static int core_pop_error_to_mark(const OSSL_CORE_HANDLE *handle)
2098 {
2099 return ERR_pop_to_mark();
2100 }
2101
core_indicator_get_callback(OPENSSL_CORE_CTX * libctx,OSSL_INDICATOR_CALLBACK ** cb)2102 static void core_indicator_get_callback(OPENSSL_CORE_CTX *libctx,
2103 OSSL_INDICATOR_CALLBACK **cb)
2104 {
2105 OSSL_INDICATOR_get_callback((OSSL_LIB_CTX *)libctx, cb);
2106 }
2107
core_self_test_get_callback(OPENSSL_CORE_CTX * libctx,OSSL_CALLBACK ** cb,void ** cbarg)2108 static void core_self_test_get_callback(OPENSSL_CORE_CTX *libctx,
2109 OSSL_CALLBACK **cb, void **cbarg)
2110 {
2111 OSSL_SELF_TEST_get_callback((OSSL_LIB_CTX *)libctx, cb, cbarg);
2112 }
2113
rand_get_entropy(const OSSL_CORE_HANDLE * handle,unsigned char ** pout,int entropy,size_t min_len,size_t max_len)2114 static size_t rand_get_entropy(const OSSL_CORE_HANDLE *handle,
2115 unsigned char **pout, int entropy,
2116 size_t min_len, size_t max_len)
2117 {
2118 return ossl_rand_get_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
2119 pout, entropy, min_len, max_len);
2120 }
2121
rand_get_user_entropy(const OSSL_CORE_HANDLE * handle,unsigned char ** pout,int entropy,size_t min_len,size_t max_len)2122 static size_t rand_get_user_entropy(const OSSL_CORE_HANDLE *handle,
2123 unsigned char **pout, int entropy,
2124 size_t min_len, size_t max_len)
2125 {
2126 return ossl_rand_get_user_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
2127 pout, entropy, min_len, max_len);
2128 }
2129
rand_cleanup_entropy(const OSSL_CORE_HANDLE * handle,unsigned char * buf,size_t len)2130 static void rand_cleanup_entropy(const OSSL_CORE_HANDLE *handle,
2131 unsigned char *buf, size_t len)
2132 {
2133 ossl_rand_cleanup_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
2134 buf, len);
2135 }
2136
rand_cleanup_user_entropy(const OSSL_CORE_HANDLE * handle,unsigned char * buf,size_t len)2137 static void rand_cleanup_user_entropy(const OSSL_CORE_HANDLE *handle,
2138 unsigned char *buf, size_t len)
2139 {
2140 ossl_rand_cleanup_user_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
2141 buf, len);
2142 }
2143
rand_get_nonce(const OSSL_CORE_HANDLE * handle,unsigned char ** pout,size_t min_len,size_t max_len,const void * salt,size_t salt_len)2144 static size_t rand_get_nonce(const OSSL_CORE_HANDLE *handle,
2145 unsigned char **pout,
2146 size_t min_len, size_t max_len,
2147 const void *salt, size_t salt_len)
2148 {
2149 return ossl_rand_get_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
2150 pout, min_len, max_len, salt, salt_len);
2151 }
2152
rand_get_user_nonce(const OSSL_CORE_HANDLE * handle,unsigned char ** pout,size_t min_len,size_t max_len,const void * salt,size_t salt_len)2153 static size_t rand_get_user_nonce(const OSSL_CORE_HANDLE *handle,
2154 unsigned char **pout,
2155 size_t min_len, size_t max_len,
2156 const void *salt, size_t salt_len)
2157 {
2158 return ossl_rand_get_user_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
2159 pout, min_len, max_len, salt, salt_len);
2160 }
2161
rand_cleanup_nonce(const OSSL_CORE_HANDLE * handle,unsigned char * buf,size_t len)2162 static void rand_cleanup_nonce(const OSSL_CORE_HANDLE *handle,
2163 unsigned char *buf, size_t len)
2164 {
2165 ossl_rand_cleanup_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
2166 buf, len);
2167 }
2168
rand_cleanup_user_nonce(const OSSL_CORE_HANDLE * handle,unsigned char * buf,size_t len)2169 static void rand_cleanup_user_nonce(const OSSL_CORE_HANDLE *handle,
2170 unsigned char *buf, size_t len)
2171 {
2172 ossl_rand_cleanup_user_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
2173 buf, len);
2174 }
2175
core_provider_get0_name(const OSSL_CORE_HANDLE * prov)2176 static const char *core_provider_get0_name(const OSSL_CORE_HANDLE *prov)
2177 {
2178 return OSSL_PROVIDER_get0_name((const OSSL_PROVIDER *)prov);
2179 }
2180
core_provider_get0_provider_ctx(const OSSL_CORE_HANDLE * prov)2181 static void *core_provider_get0_provider_ctx(const OSSL_CORE_HANDLE *prov)
2182 {
2183 return OSSL_PROVIDER_get0_provider_ctx((const OSSL_PROVIDER *)prov);
2184 }
2185
2186 static const OSSL_DISPATCH *
core_provider_get0_dispatch(const OSSL_CORE_HANDLE * prov)2187 core_provider_get0_dispatch(const OSSL_CORE_HANDLE *prov)
2188 {
2189 return OSSL_PROVIDER_get0_dispatch((const OSSL_PROVIDER *)prov);
2190 }
2191
core_provider_up_ref_intern(const OSSL_CORE_HANDLE * prov,int activate)2192 static int core_provider_up_ref_intern(const OSSL_CORE_HANDLE *prov,
2193 int activate)
2194 {
2195 return provider_up_ref_intern((OSSL_PROVIDER *)prov, activate);
2196 }
2197
core_provider_free_intern(const OSSL_CORE_HANDLE * prov,int deactivate)2198 static int core_provider_free_intern(const OSSL_CORE_HANDLE *prov,
2199 int deactivate)
2200 {
2201 return provider_free_intern((OSSL_PROVIDER *)prov, deactivate);
2202 }
2203
core_obj_add_sigid(const OSSL_CORE_HANDLE * prov,const char * sign_name,const char * digest_name,const char * pkey_name)2204 static int core_obj_add_sigid(const OSSL_CORE_HANDLE *prov,
2205 const char *sign_name, const char *digest_name,
2206 const char *pkey_name)
2207 {
2208 int sign_nid = OBJ_txt2nid(sign_name);
2209 int digest_nid = NID_undef;
2210 int pkey_nid = OBJ_txt2nid(pkey_name);
2211
2212 if (digest_name != NULL && digest_name[0] != '\0'
2213 && (digest_nid = OBJ_txt2nid(digest_name)) == NID_undef)
2214 return 0;
2215
2216 if (sign_nid == NID_undef)
2217 return 0;
2218
2219 /*
2220 * Check if it already exists. This is a success if so (even if we don't
2221 * have nids for the digest/pkey)
2222 */
2223 if (OBJ_find_sigid_algs(sign_nid, NULL, NULL))
2224 return 1;
2225
2226 if (pkey_nid == NID_undef)
2227 return 0;
2228
2229 return OBJ_add_sigid(sign_nid, digest_nid, pkey_nid);
2230 }
2231
core_obj_create(const OSSL_CORE_HANDLE * prov,const char * oid,const char * sn,const char * ln)2232 static int core_obj_create(const OSSL_CORE_HANDLE *prov, const char *oid,
2233 const char *sn, const char *ln)
2234 {
2235 /* Check if it already exists and create it if not */
2236 return OBJ_txt2nid(oid) != NID_undef
2237 || OBJ_create(oid, sn, ln) != NID_undef;
2238 }
2239 #endif /* FIPS_MODULE */
2240
2241 /*
2242 * Functions provided by the core.
2243 */
2244 static const OSSL_DISPATCH core_dispatch_[] = {
2245 { OSSL_FUNC_CORE_GETTABLE_PARAMS, (void (*)(void))core_gettable_params },
2246 { OSSL_FUNC_CORE_GET_PARAMS, (void (*)(void))core_get_params },
2247 { OSSL_FUNC_CORE_GET_LIBCTX, (void (*)(void))core_get_libctx },
2248 { OSSL_FUNC_CORE_THREAD_START, (void (*)(void))core_thread_start },
2249 #ifndef FIPS_MODULE
2250 { OSSL_FUNC_CORE_NEW_ERROR, (void (*)(void))core_new_error },
2251 { OSSL_FUNC_CORE_SET_ERROR_DEBUG, (void (*)(void))core_set_error_debug },
2252 { OSSL_FUNC_CORE_VSET_ERROR, (void (*)(void))core_vset_error },
2253 { OSSL_FUNC_CORE_SET_ERROR_MARK, (void (*)(void))core_set_error_mark },
2254 { OSSL_FUNC_CORE_CLEAR_LAST_ERROR_MARK,
2255 (void (*)(void))core_clear_last_error_mark },
2256 { OSSL_FUNC_CORE_POP_ERROR_TO_MARK, (void (*)(void))core_pop_error_to_mark },
2257 { OSSL_FUNC_BIO_NEW_FILE, (void (*)(void))ossl_core_bio_new_file },
2258 { OSSL_FUNC_BIO_NEW_MEMBUF, (void (*)(void))ossl_core_bio_new_mem_buf },
2259 { OSSL_FUNC_BIO_READ_EX, (void (*)(void))ossl_core_bio_read_ex },
2260 { OSSL_FUNC_BIO_WRITE_EX, (void (*)(void))ossl_core_bio_write_ex },
2261 { OSSL_FUNC_BIO_GETS, (void (*)(void))ossl_core_bio_gets },
2262 { OSSL_FUNC_BIO_PUTS, (void (*)(void))ossl_core_bio_puts },
2263 { OSSL_FUNC_BIO_CTRL, (void (*)(void))ossl_core_bio_ctrl },
2264 { OSSL_FUNC_BIO_UP_REF, (void (*)(void))ossl_core_bio_up_ref },
2265 { OSSL_FUNC_BIO_FREE, (void (*)(void))ossl_core_bio_free },
2266 { OSSL_FUNC_BIO_VPRINTF, (void (*)(void))ossl_core_bio_vprintf },
2267 { OSSL_FUNC_BIO_VSNPRINTF, (void (*)(void))BIO_vsnprintf },
2268 { OSSL_FUNC_SELF_TEST_CB, (void (*)(void))core_self_test_get_callback },
2269 { OSSL_FUNC_INDICATOR_CB, (void (*)(void))core_indicator_get_callback },
2270 { OSSL_FUNC_GET_ENTROPY, (void (*)(void))rand_get_entropy },
2271 { OSSL_FUNC_GET_USER_ENTROPY, (void (*)(void))rand_get_user_entropy },
2272 { OSSL_FUNC_CLEANUP_ENTROPY, (void (*)(void))rand_cleanup_entropy },
2273 { OSSL_FUNC_CLEANUP_USER_ENTROPY, (void (*)(void))rand_cleanup_user_entropy },
2274 { OSSL_FUNC_GET_NONCE, (void (*)(void))rand_get_nonce },
2275 { OSSL_FUNC_GET_USER_NONCE, (void (*)(void))rand_get_user_nonce },
2276 { OSSL_FUNC_CLEANUP_NONCE, (void (*)(void))rand_cleanup_nonce },
2277 { OSSL_FUNC_CLEANUP_USER_NONCE, (void (*)(void))rand_cleanup_user_nonce },
2278 #endif
2279 { OSSL_FUNC_CRYPTO_MALLOC, (void (*)(void))CRYPTO_malloc },
2280 { OSSL_FUNC_CRYPTO_ZALLOC, (void (*)(void))CRYPTO_zalloc },
2281 { OSSL_FUNC_CRYPTO_FREE, (void (*)(void))CRYPTO_free },
2282 { OSSL_FUNC_CRYPTO_CLEAR_FREE, (void (*)(void))CRYPTO_clear_free },
2283 { OSSL_FUNC_CRYPTO_REALLOC, (void (*)(void))CRYPTO_realloc },
2284 { OSSL_FUNC_CRYPTO_CLEAR_REALLOC, (void (*)(void))CRYPTO_clear_realloc },
2285 { OSSL_FUNC_CRYPTO_SECURE_MALLOC, (void (*)(void))CRYPTO_secure_malloc },
2286 { OSSL_FUNC_CRYPTO_SECURE_ZALLOC, (void (*)(void))CRYPTO_secure_zalloc },
2287 { OSSL_FUNC_CRYPTO_SECURE_FREE, (void (*)(void))CRYPTO_secure_free },
2288 { OSSL_FUNC_CRYPTO_SECURE_CLEAR_FREE,
2289 (void (*)(void))CRYPTO_secure_clear_free },
2290 { OSSL_FUNC_CRYPTO_SECURE_ALLOCATED,
2291 (void (*)(void))CRYPTO_secure_allocated },
2292 { OSSL_FUNC_OPENSSL_CLEANSE, (void (*)(void))OPENSSL_cleanse },
2293 #ifndef FIPS_MODULE
2294 { OSSL_FUNC_PROVIDER_REGISTER_CHILD_CB,
2295 (void (*)(void))ossl_provider_register_child_cb },
2296 { OSSL_FUNC_PROVIDER_DEREGISTER_CHILD_CB,
2297 (void (*)(void))ossl_provider_deregister_child_cb },
2298 { OSSL_FUNC_PROVIDER_NAME,
2299 (void (*)(void))core_provider_get0_name },
2300 { OSSL_FUNC_PROVIDER_GET0_PROVIDER_CTX,
2301 (void (*)(void))core_provider_get0_provider_ctx },
2302 { OSSL_FUNC_PROVIDER_GET0_DISPATCH,
2303 (void (*)(void))core_provider_get0_dispatch },
2304 { OSSL_FUNC_PROVIDER_UP_REF,
2305 (void (*)(void))core_provider_up_ref_intern },
2306 { OSSL_FUNC_PROVIDER_FREE,
2307 (void (*)(void))core_provider_free_intern },
2308 { OSSL_FUNC_CORE_OBJ_ADD_SIGID, (void (*)(void))core_obj_add_sigid },
2309 { OSSL_FUNC_CORE_OBJ_CREATE, (void (*)(void))core_obj_create },
2310 #endif
2311 OSSL_DISPATCH_END
2312 };
2313 static const OSSL_DISPATCH *core_dispatch = core_dispatch_;
2314
