2 * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
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
10 #include <openssl/core.h>
11 #include <openssl/core_dispatch.h>
12 #include <openssl/core_names.h>
13 #include <openssl/provider.h>
14 #include <openssl/params.h>
15 #include <openssl/opensslv.h>
16 #include "crypto/cryptlib.h"
17 #include "crypto/evp.h" /* evp_method_store_flush */
18 #include "crypto/rand.h"
19 #include "internal/nelem.h"
20 #include "internal/thread_once.h"
21 #include "internal/provider.h"
22 #include "internal/refcount.h"
23 #include "provider_local.h"
25 # include <openssl/self_test.h>
28 static OSSL_PROVIDER *provider_new(const char *name,
29 OSSL_provider_init_fn *init_function);
32 * Provider Object structure
33 * =========================
40 DEFINE_STACK_OF(INFOPAIR)
42 struct provider_store_st; /* Forward declaration */
44 struct ossl_provider_st {
46 unsigned int flag_initialized:1;
47 unsigned int flag_activated:1;
48 unsigned int flag_fallback:1; /* Can be used as fallback */
49 unsigned int flag_activated_as_fallback:1;
51 /* OpenSSL library side data */
52 CRYPTO_REF_COUNT refcnt;
53 CRYPTO_RWLOCK *refcnt_lock; /* For the ref counter */
54 CRYPTO_REF_COUNT activatecnt;
55 CRYPTO_RWLOCK *activatecnt_lock; /* For the activate counter */
59 OSSL_provider_init_fn *init_function;
60 STACK_OF(INFOPAIR) *parameters;
61 OSSL_LIB_CTX *libctx; /* The library context this instance is in */
62 struct provider_store_st *store; /* The store this instance belongs to */
65 * In the FIPS module inner provider, this isn't needed, since the
66 * error upcalls are always direct calls to the outer provider.
68 int error_lib; /* ERR library number, one for each provider */
69 # ifndef OPENSSL_NO_ERR
70 ERR_STRING_DATA *error_strings; /* Copy of what the provider gives us */
74 /* Provider side functions */
75 OSSL_FUNC_provider_teardown_fn *teardown;
76 OSSL_FUNC_provider_gettable_params_fn *gettable_params;
77 OSSL_FUNC_provider_get_params_fn *get_params;
78 OSSL_FUNC_provider_get_capabilities_fn *get_capabilities;
79 OSSL_FUNC_provider_self_test_fn *self_test;
80 OSSL_FUNC_provider_query_operation_fn *query_operation;
83 * Cache of bit to indicate of query_operation() has been called on
84 * a specific operation or not.
86 unsigned char *operation_bits;
87 size_t operation_bits_sz;
88 CRYPTO_RWLOCK *opbits_lock;
90 /* Provider side data */
93 DEFINE_STACK_OF(OSSL_PROVIDER)
95 static int ossl_provider_cmp(const OSSL_PROVIDER * const *a,
96 const OSSL_PROVIDER * const *b)
98 return strcmp((*a)->name, (*b)->name);
102 * Provider Object store
103 * =====================
105 * The Provider Object store is a library context object, and therefore needs
109 struct provider_store_st {
110 STACK_OF(OSSL_PROVIDER) *providers;
113 unsigned int use_fallbacks:1;
117 * provider_deactivate_free() is a wrapper around ossl_provider_deactivate()
118 * and ossl_provider_free(), called as needed.
119 * Since this is only called when the provider store is being emptied, we
120 * don't need to care about any lock.
122 static void provider_deactivate_free(OSSL_PROVIDER *prov)
124 if (prov->flag_activated)
125 ossl_provider_deactivate(prov);
126 ossl_provider_free(prov);
129 static void provider_store_free(void *vstore)
131 struct provider_store_st *store = vstore;
135 OPENSSL_free(store->default_path);
136 sk_OSSL_PROVIDER_pop_free(store->providers, provider_deactivate_free);
137 CRYPTO_THREAD_lock_free(store->lock);
141 static void *provider_store_new(OSSL_LIB_CTX *ctx)
143 struct provider_store_st *store = OPENSSL_zalloc(sizeof(*store));
144 const struct predefined_providers_st *p = NULL;
147 || (store->providers = sk_OSSL_PROVIDER_new(ossl_provider_cmp)) == NULL
148 || (store->lock = CRYPTO_THREAD_lock_new()) == NULL) {
149 provider_store_free(store);
152 store->use_fallbacks = 1;
154 for (p = predefined_providers; p->name != NULL; p++) {
155 OSSL_PROVIDER *prov = NULL;
158 * We use the internal constructor directly here,
159 * otherwise we get a call loop
161 prov = provider_new(p->name, p->init);
164 || sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
165 ossl_provider_free(prov);
166 provider_store_free(store);
167 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
173 prov->error_lib = ERR_get_next_error_library();
176 ossl_provider_set_fallback(prov);
182 static const OSSL_LIB_CTX_METHOD provider_store_method = {
187 static struct provider_store_st *get_provider_store(OSSL_LIB_CTX *libctx)
189 struct provider_store_st *store = NULL;
191 store = ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_PROVIDER_STORE_INDEX,
192 &provider_store_method);
194 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
198 int ossl_provider_disable_fallback_loading(OSSL_LIB_CTX *libctx)
200 struct provider_store_st *store;
202 if ((store = get_provider_store(libctx)) != NULL) {
203 store->use_fallbacks = 0;
209 OSSL_PROVIDER *ossl_provider_find(OSSL_LIB_CTX *libctx, const char *name,
212 struct provider_store_st *store = NULL;
213 OSSL_PROVIDER *prov = NULL;
215 if ((store = get_provider_store(libctx)) != NULL) {
216 OSSL_PROVIDER tmpl = { 0, };
221 * Make sure any providers are loaded from config before we try to find
225 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
228 tmpl.name = (char *)name;
229 CRYPTO_THREAD_write_lock(store->lock);
230 if ((i = sk_OSSL_PROVIDER_find(store->providers, &tmpl)) == -1
231 || (prov = sk_OSSL_PROVIDER_value(store->providers, i)) == NULL
232 || !ossl_provider_up_ref(prov))
234 CRYPTO_THREAD_unlock(store->lock);
241 * Provider Object methods
242 * =======================
245 static OSSL_PROVIDER *provider_new(const char *name,
246 OSSL_provider_init_fn *init_function)
248 OSSL_PROVIDER *prov = NULL;
250 if ((prov = OPENSSL_zalloc(sizeof(*prov))) == NULL
252 || (prov->refcnt_lock = CRYPTO_THREAD_lock_new()) == NULL
253 || (prov->activatecnt_lock = CRYPTO_THREAD_lock_new()) == NULL
255 || !ossl_provider_up_ref(prov) /* +1 One reference to be returned */
256 || (prov->opbits_lock = CRYPTO_THREAD_lock_new()) == NULL
257 || (prov->name = OPENSSL_strdup(name)) == NULL) {
258 ossl_provider_free(prov);
259 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
263 prov->init_function = init_function;
267 int ossl_provider_up_ref(OSSL_PROVIDER *prov)
271 if (CRYPTO_UP_REF(&prov->refcnt, &ref, prov->refcnt_lock) <= 0)
276 OSSL_PROVIDER *ossl_provider_new(OSSL_LIB_CTX *libctx, const char *name,
277 OSSL_provider_init_fn *init_function,
280 struct provider_store_st *store = NULL;
281 OSSL_PROVIDER *prov = NULL;
283 if ((store = get_provider_store(libctx)) == NULL)
286 if ((prov = ossl_provider_find(libctx, name,
287 noconfig)) != NULL) { /* refcount +1 */
288 ossl_provider_free(prov); /* refcount -1 */
289 ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_ALREADY_EXISTS,
294 /* provider_new() generates an error, so no need here */
295 if ((prov = provider_new(name, init_function)) == NULL)
298 CRYPTO_THREAD_write_lock(store->lock);
299 if (!ossl_provider_up_ref(prov)) { /* +1 One reference for the store */
300 ossl_provider_free(prov); /* -1 Reference that was to be returned */
302 } else if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
303 ossl_provider_free(prov); /* -1 Store reference */
304 ossl_provider_free(prov); /* -1 Reference that was to be returned */
307 prov->libctx = libctx;
310 prov->error_lib = ERR_get_next_error_library();
313 CRYPTO_THREAD_unlock(store->lock);
316 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
319 * At this point, the provider is only partially "loaded". To be
320 * fully "loaded", ossl_provider_activate() must also be called.
326 static void free_infopair(INFOPAIR *pair)
328 OPENSSL_free(pair->name);
329 OPENSSL_free(pair->value);
333 void ossl_provider_free(OSSL_PROVIDER *prov)
338 CRYPTO_DOWN_REF(&prov->refcnt, &ref, prov->refcnt_lock);
341 * When the refcount drops to zero, we clean up the provider.
342 * Note that this also does teardown, which may seem late,
343 * considering that init happens on first activation. However,
344 * there may be other structures hanging on to the provider after
345 * the last deactivation and may therefore need full access to the
346 * provider's services. Therefore, we deinit late.
349 if (prov->flag_initialized) {
351 ossl_init_thread_deregister(prov);
353 if (prov->teardown != NULL)
354 prov->teardown(prov->provctx);
355 #ifndef OPENSSL_NO_ERR
357 if (prov->error_strings != NULL) {
358 ERR_unload_strings(prov->error_lib, prov->error_strings);
359 OPENSSL_free(prov->error_strings);
360 prov->error_strings = NULL;
364 OPENSSL_free(prov->operation_bits);
365 prov->operation_bits = NULL;
366 prov->operation_bits_sz = 0;
367 prov->flag_initialized = 0;
371 DSO_free(prov->module);
373 OPENSSL_free(prov->name);
374 OPENSSL_free(prov->path);
375 sk_INFOPAIR_pop_free(prov->parameters, free_infopair);
376 CRYPTO_THREAD_lock_free(prov->opbits_lock);
378 CRYPTO_THREAD_lock_free(prov->refcnt_lock);
379 CRYPTO_THREAD_lock_free(prov->activatecnt_lock);
387 int ossl_provider_set_module_path(OSSL_PROVIDER *prov, const char *module_path)
389 OPENSSL_free(prov->path);
390 if (module_path == NULL)
392 if ((prov->path = OPENSSL_strdup(module_path)) != NULL)
394 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
398 int ossl_provider_add_parameter(OSSL_PROVIDER *prov,
399 const char *name, const char *value)
401 INFOPAIR *pair = NULL;
403 if ((pair = OPENSSL_zalloc(sizeof(*pair))) != NULL
404 && (prov->parameters != NULL
405 || (prov->parameters = sk_INFOPAIR_new_null()) != NULL)
406 && (pair->name = OPENSSL_strdup(name)) != NULL
407 && (pair->value = OPENSSL_strdup(value)) != NULL
408 && sk_INFOPAIR_push(prov->parameters, pair) > 0)
412 OPENSSL_free(pair->name);
413 OPENSSL_free(pair->value);
416 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
421 * Provider activation.
423 * What "activation" means depends on the provider form; for built in
424 * providers (in the library or the application alike), the provider
425 * can already be considered to be loaded, all that's needed is to
426 * initialize it. However, for dynamically loadable provider modules,
427 * we must first load that module.
429 * Built in modules are distinguished from dynamically loaded modules
430 * with an already assigned init function.
432 static const OSSL_DISPATCH *core_dispatch; /* Define further down */
434 int OSSL_PROVIDER_set_default_search_path(OSSL_LIB_CTX *libctx,
437 struct provider_store_st *store;
441 p = OPENSSL_strdup(path);
443 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
447 if ((store = get_provider_store(libctx)) != NULL
448 && CRYPTO_THREAD_write_lock(store->lock)) {
449 OPENSSL_free(store->default_path);
450 store->default_path = p;
451 CRYPTO_THREAD_unlock(store->lock);
459 * Internal version that doesn't affect the store flags, and thereby avoid
460 * locking. Direct callers must remember to set the store flags when
463 static int provider_init(OSSL_PROVIDER *prov)
465 const OSSL_DISPATCH *provider_dispatch = NULL;
466 void *tmp_provctx = NULL; /* safety measure */
467 #ifndef OPENSSL_NO_ERR
469 OSSL_FUNC_provider_get_reason_strings_fn *p_get_reason_strings = NULL;
473 if (prov->flag_initialized)
477 * If the init function isn't set, it indicates that this provider is
480 if (prov->init_function == NULL) {
484 if (prov->module == NULL) {
485 char *allocated_path = NULL;
486 const char *module_path = NULL;
487 char *merged_path = NULL;
488 const char *load_dir = NULL;
489 struct provider_store_st *store;
491 if ((prov->module = DSO_new()) == NULL) {
492 /* DSO_new() generates an error already */
496 if ((store = get_provider_store(prov->libctx)) == NULL
497 || !CRYPTO_THREAD_read_lock(store->lock))
499 load_dir = store->default_path;
501 if (load_dir == NULL) {
502 load_dir = ossl_safe_getenv("OPENSSL_MODULES");
503 if (load_dir == NULL)
504 load_dir = MODULESDIR;
507 DSO_ctrl(prov->module, DSO_CTRL_SET_FLAGS,
508 DSO_FLAG_NAME_TRANSLATION_EXT_ONLY, NULL);
510 module_path = prov->path;
511 if (module_path == NULL)
512 module_path = allocated_path =
513 DSO_convert_filename(prov->module, prov->name);
514 if (module_path != NULL)
515 merged_path = DSO_merge(prov->module, module_path, load_dir);
516 CRYPTO_THREAD_unlock(store->lock);
518 if (merged_path == NULL
519 || (DSO_load(prov->module, merged_path, NULL, 0)) == NULL) {
520 DSO_free(prov->module);
524 OPENSSL_free(merged_path);
525 OPENSSL_free(allocated_path);
528 if (prov->module != NULL)
529 prov->init_function = (OSSL_provider_init_fn *)
530 DSO_bind_func(prov->module, "OSSL_provider_init");
534 /* Call the initialise function for the provider. */
535 if (prov->init_function == NULL
536 || !prov->init_function((OSSL_CORE_HANDLE *)prov, core_dispatch,
537 &provider_dispatch, &tmp_provctx)) {
538 ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_INIT_FAIL,
539 "name=%s", prov->name);
541 DSO_free(prov->module);
546 prov->provctx = tmp_provctx;
548 for (; provider_dispatch->function_id != 0; provider_dispatch++) {
549 switch (provider_dispatch->function_id) {
550 case OSSL_FUNC_PROVIDER_TEARDOWN:
552 OSSL_FUNC_provider_teardown(provider_dispatch);
554 case OSSL_FUNC_PROVIDER_GETTABLE_PARAMS:
555 prov->gettable_params =
556 OSSL_FUNC_provider_gettable_params(provider_dispatch);
558 case OSSL_FUNC_PROVIDER_GET_PARAMS:
560 OSSL_FUNC_provider_get_params(provider_dispatch);
562 case OSSL_FUNC_PROVIDER_SELF_TEST:
564 OSSL_FUNC_provider_self_test(provider_dispatch);
566 case OSSL_FUNC_PROVIDER_GET_CAPABILITIES:
567 prov->get_capabilities =
568 OSSL_FUNC_provider_get_capabilities(provider_dispatch);
570 case OSSL_FUNC_PROVIDER_QUERY_OPERATION:
571 prov->query_operation =
572 OSSL_FUNC_provider_query_operation(provider_dispatch);
574 #ifndef OPENSSL_NO_ERR
576 case OSSL_FUNC_PROVIDER_GET_REASON_STRINGS:
577 p_get_reason_strings =
578 OSSL_FUNC_provider_get_reason_strings(provider_dispatch);
585 #ifndef OPENSSL_NO_ERR
587 if (p_get_reason_strings != NULL) {
588 const OSSL_ITEM *reasonstrings = p_get_reason_strings(prov->provctx);
592 * ERR_load_strings() handles ERR_STRING_DATA rather than OSSL_ITEM,
593 * although they are essentially the same type.
594 * Furthermore, ERR_load_strings() patches the array's error number
595 * with the error library number, so we need to make a copy of that
599 while (reasonstrings[cnt].id != 0) {
600 if (ERR_GET_LIB(reasonstrings[cnt].id) != 0)
604 cnt++; /* One for the terminating item */
606 /* Allocate one extra item for the "library" name */
607 prov->error_strings =
608 OPENSSL_zalloc(sizeof(ERR_STRING_DATA) * (cnt + 1));
609 if (prov->error_strings == NULL)
613 * Set the "library" name.
615 prov->error_strings[0].error = ERR_PACK(prov->error_lib, 0, 0);
616 prov->error_strings[0].string = prov->name;
618 * Copy reasonstrings item 0..cnt-1 to prov->error_trings positions
621 for (cnt2 = 1; cnt2 <= cnt; cnt2++) {
622 prov->error_strings[cnt2].error = (int)reasonstrings[cnt2-1].id;
623 prov->error_strings[cnt2].string = reasonstrings[cnt2-1].ptr;
626 ERR_load_strings(prov->error_lib, prov->error_strings);
631 /* With this flag set, this provider has become fully "loaded". */
632 prov->flag_initialized = 1;
636 static int provider_deactivate(OSSL_PROVIDER *prov)
640 if (!ossl_assert(prov != NULL))
643 if (CRYPTO_DOWN_REF(&prov->activatecnt, &ref, prov->activatecnt_lock) <= 0)
647 prov->flag_activated = 0;
649 /* We don't deinit here, that's done in ossl_provider_free() */
653 static int provider_activate(OSSL_PROVIDER *prov)
657 if (CRYPTO_UP_REF(&prov->activatecnt, &ref, prov->activatecnt_lock) <= 0)
660 if (provider_init(prov)) {
661 prov->flag_activated = 1;
666 provider_deactivate(prov);
670 int ossl_provider_activate(OSSL_PROVIDER *prov)
674 if (provider_activate(prov)) {
675 CRYPTO_THREAD_write_lock(prov->store->lock);
676 prov->store->use_fallbacks = 0;
677 CRYPTO_THREAD_unlock(prov->store->lock);
683 int ossl_provider_deactivate(OSSL_PROVIDER *prov)
687 return provider_deactivate(prov);
690 void *ossl_provider_ctx(const OSSL_PROVIDER *prov)
692 return prov->provctx;
696 static int provider_forall_loaded(struct provider_store_st *store,
697 int *found_activated,
698 int (*cb)(OSSL_PROVIDER *provider,
706 num_provs = sk_OSSL_PROVIDER_num(store->providers);
708 if (found_activated != NULL)
709 *found_activated = 0;
710 for (i = 0; i < num_provs; i++) {
711 OSSL_PROVIDER *prov =
712 sk_OSSL_PROVIDER_value(store->providers, i);
714 if (prov->flag_activated) {
715 if (found_activated != NULL)
716 *found_activated = 1;
717 if (!(ret = cb(prov, cbdata)))
726 * This function only does something once when store->use_fallbacks == 1,
727 * and then sets store->use_fallbacks = 0, so the second call and so on is
728 * effectively a no-op.
730 static void provider_activate_fallbacks(struct provider_store_st *store)
734 int activated_fallback_count = 0;
737 CRYPTO_THREAD_read_lock(store->lock);
738 use_fallbacks = store->use_fallbacks;
739 CRYPTO_THREAD_unlock(store->lock);
743 CRYPTO_THREAD_write_lock(store->lock);
744 /* Check again, just in case another thread changed it */
745 use_fallbacks = store->use_fallbacks;
746 if (!use_fallbacks) {
747 CRYPTO_THREAD_unlock(store->lock);
751 num_provs = sk_OSSL_PROVIDER_num(store->providers);
752 for (i = 0; i < num_provs; i++) {
753 OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(store->providers, i);
755 if (ossl_provider_up_ref(prov)) {
756 if (prov->flag_fallback) {
757 if (provider_activate(prov)) {
758 prov->flag_activated_as_fallback = 1;
759 activated_fallback_count++;
762 ossl_provider_free(prov);
767 * We assume that all fallbacks have been added to the store before
768 * any fallback is activated.
769 * TODO: We may have to reconsider this, IF we find ourselves adding
770 * fallbacks after any previous fallback has been activated.
772 if (activated_fallback_count > 0)
773 store->use_fallbacks = 0;
775 CRYPTO_THREAD_unlock(store->lock);
778 int ossl_provider_forall_loaded(OSSL_LIB_CTX *ctx,
779 int (*cb)(OSSL_PROVIDER *provider,
784 struct provider_store_st *store = get_provider_store(ctx);
788 * Make sure any providers are loaded from config before we try to use
791 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
795 provider_activate_fallbacks(store);
797 CRYPTO_THREAD_read_lock(store->lock);
799 * Now, we sweep through all providers
801 ret = provider_forall_loaded(store, NULL, cb, cbdata);
803 CRYPTO_THREAD_unlock(store->lock);
809 int ossl_provider_available(OSSL_PROVIDER *prov)
812 provider_activate_fallbacks(prov->store);
814 return prov->flag_activated;
819 /* Setters of Provider Object data */
820 int ossl_provider_set_fallback(OSSL_PROVIDER *prov)
825 prov->flag_fallback = 1;
829 /* Getters of Provider Object data */
830 const char *ossl_provider_name(const OSSL_PROVIDER *prov)
835 const DSO *ossl_provider_dso(const OSSL_PROVIDER *prov)
840 const char *ossl_provider_module_name(const OSSL_PROVIDER *prov)
845 return DSO_get_filename(prov->module);
849 const char *ossl_provider_module_path(const OSSL_PROVIDER *prov)
854 /* FIXME: Ensure it's a full path */
855 return DSO_get_filename(prov->module);
859 void *ossl_provider_prov_ctx(const OSSL_PROVIDER *prov)
862 return prov->provctx;
867 OSSL_LIB_CTX *ossl_provider_libctx(const OSSL_PROVIDER *prov)
869 /* TODO(3.0) just: return prov->libctx; */
870 return prov != NULL ? prov->libctx : NULL;
873 /* Wrappers around calls to the provider */
874 void ossl_provider_teardown(const OSSL_PROVIDER *prov)
876 if (prov->teardown != NULL)
877 prov->teardown(prov->provctx);
880 const OSSL_PARAM *ossl_provider_gettable_params(const OSSL_PROVIDER *prov)
882 return prov->gettable_params == NULL
883 ? NULL : prov->gettable_params(prov->provctx);
886 int ossl_provider_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
888 return prov->get_params == NULL
889 ? 0 : prov->get_params(prov->provctx, params);
892 int ossl_provider_self_test(const OSSL_PROVIDER *prov)
896 if (prov->self_test == NULL)
898 ret = prov->self_test(prov->provctx);
900 evp_method_store_flush(ossl_provider_libctx(prov));
904 int ossl_provider_get_capabilities(const OSSL_PROVIDER *prov,
905 const char *capability,
909 return prov->get_capabilities == NULL
910 ? 1 : prov->get_capabilities(prov->provctx, capability, cb, arg);
913 const OSSL_ALGORITHM *ossl_provider_query_operation(const OSSL_PROVIDER *prov,
917 const OSSL_ALGORITHM *res;
919 if (prov->query_operation == NULL)
921 res = prov->query_operation(prov->provctx, operation_id, no_cache);
922 #if defined(OPENSSL_NO_CACHED_FETCH)
923 /* Forcing the non-caching of queries */
924 if (no_cache != NULL)
930 int ossl_provider_set_operation_bit(OSSL_PROVIDER *provider, size_t bitnum)
932 size_t byte = bitnum / 8;
933 unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
935 CRYPTO_THREAD_write_lock(provider->opbits_lock);
936 if (provider->operation_bits_sz <= byte) {
937 unsigned char *tmp = OPENSSL_realloc(provider->operation_bits,
941 CRYPTO_THREAD_unlock(provider->opbits_lock);
942 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
945 provider->operation_bits = tmp;
946 memset(provider->operation_bits + provider->operation_bits_sz,
947 '\0', byte + 1 - provider->operation_bits_sz);
948 provider->operation_bits_sz = byte + 1;
950 provider->operation_bits[byte] |= bit;
951 CRYPTO_THREAD_unlock(provider->opbits_lock);
955 int ossl_provider_test_operation_bit(OSSL_PROVIDER *provider, size_t bitnum,
958 size_t byte = bitnum / 8;
959 unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
961 if (!ossl_assert(result != NULL)) {
962 ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
967 CRYPTO_THREAD_read_lock(provider->opbits_lock);
968 if (provider->operation_bits_sz > byte)
969 *result = ((provider->operation_bits[byte] & bit) != 0);
970 CRYPTO_THREAD_unlock(provider->opbits_lock);
975 * Core functions for the provider
976 * ===============================
978 * This is the set of functions that the core makes available to the provider
982 * This returns a list of Provider Object parameters with their types, for
983 * discovery. We do not expect that many providers will use this, but one
986 static const OSSL_PARAM param_types[] = {
987 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
988 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_PROV_NAME, OSSL_PARAM_UTF8_PTR,
991 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_MODULE_FILENAME, OSSL_PARAM_UTF8_PTR,
998 * Forward declare all the functions that are provided aa dispatch.
999 * This ensures that the compiler will complain if they aren't defined
1000 * with the correct signature.
1002 static OSSL_FUNC_core_gettable_params_fn core_gettable_params;
1003 static OSSL_FUNC_core_get_params_fn core_get_params;
1004 static OSSL_FUNC_core_thread_start_fn core_thread_start;
1005 static OSSL_FUNC_core_get_libctx_fn core_get_libctx;
1007 static OSSL_FUNC_core_new_error_fn core_new_error;
1008 static OSSL_FUNC_core_set_error_debug_fn core_set_error_debug;
1009 static OSSL_FUNC_core_vset_error_fn core_vset_error;
1010 static OSSL_FUNC_core_set_error_mark_fn core_set_error_mark;
1011 static OSSL_FUNC_core_clear_last_error_mark_fn core_clear_last_error_mark;
1012 static OSSL_FUNC_core_pop_error_to_mark_fn core_pop_error_to_mark;
1015 static const OSSL_PARAM *core_gettable_params(const OSSL_CORE_HANDLE *handle)
1020 static int core_get_params(const OSSL_CORE_HANDLE *handle, OSSL_PARAM params[])
1025 * We created this object originally and we know it is actually an
1026 * OSSL_PROVIDER *, so the cast is safe
1028 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1030 if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_VERSION)) != NULL)
1031 OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR);
1032 if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_PROV_NAME)) != NULL)
1033 OSSL_PARAM_set_utf8_ptr(p, prov->name);
1036 if ((p = OSSL_PARAM_locate(params,
1037 OSSL_PROV_PARAM_CORE_MODULE_FILENAME)) != NULL)
1038 OSSL_PARAM_set_utf8_ptr(p, ossl_provider_module_path(prov));
1041 if (prov->parameters == NULL)
1044 for (i = 0; i < sk_INFOPAIR_num(prov->parameters); i++) {
1045 INFOPAIR *pair = sk_INFOPAIR_value(prov->parameters, i);
1047 if ((p = OSSL_PARAM_locate(params, pair->name)) != NULL)
1048 OSSL_PARAM_set_utf8_ptr(p, pair->value);
1053 static OPENSSL_CORE_CTX *core_get_libctx(const OSSL_CORE_HANDLE *handle)
1056 * We created this object originally and we know it is actually an
1057 * OSSL_PROVIDER *, so the cast is safe
1059 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1061 return (OPENSSL_CORE_CTX *)ossl_provider_libctx(prov);
1064 static int core_thread_start(const OSSL_CORE_HANDLE *handle,
1065 OSSL_thread_stop_handler_fn handfn)
1068 * We created this object originally and we know it is actually an
1069 * OSSL_PROVIDER *, so the cast is safe
1071 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1073 return ossl_init_thread_start(prov, prov->provctx, handfn);
1077 * The FIPS module inner provider doesn't implement these. They aren't
1078 * needed there, since the FIPS module upcalls are always the outer provider
1083 * TODO(3.0) These error functions should use |handle| to select the proper
1084 * library context to report in the correct error stack, at least if error
1085 * stacks become tied to the library context.
1086 * We cannot currently do that since there's no support for it in the
1089 static void core_new_error(const OSSL_CORE_HANDLE *handle)
1094 static void core_set_error_debug(const OSSL_CORE_HANDLE *handle,
1095 const char *file, int line, const char *func)
1097 ERR_set_debug(file, line, func);
1100 static void core_vset_error(const OSSL_CORE_HANDLE *handle,
1101 uint32_t reason, const char *fmt, va_list args)
1104 * We created this object originally and we know it is actually an
1105 * OSSL_PROVIDER *, so the cast is safe
1107 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1110 * If the uppermost 8 bits are non-zero, it's an OpenSSL library
1111 * error and will be treated as such. Otherwise, it's a new style
1112 * provider error and will be treated as such.
1114 if (ERR_GET_LIB(reason) != 0) {
1115 ERR_vset_error(ERR_GET_LIB(reason), ERR_GET_REASON(reason), fmt, args);
1117 ERR_vset_error(prov->error_lib, (int)reason, fmt, args);
1121 static int core_set_error_mark(const OSSL_CORE_HANDLE *handle)
1123 return ERR_set_mark();
1126 static int core_clear_last_error_mark(const OSSL_CORE_HANDLE *handle)
1128 return ERR_clear_last_mark();
1131 static int core_pop_error_to_mark(const OSSL_CORE_HANDLE *handle)
1133 return ERR_pop_to_mark();
1135 #endif /* FIPS_MODULE */
1138 * Functions provided by the core.
1140 static const OSSL_DISPATCH core_dispatch_[] = {
1141 { OSSL_FUNC_CORE_GETTABLE_PARAMS, (void (*)(void))core_gettable_params },
1142 { OSSL_FUNC_CORE_GET_PARAMS, (void (*)(void))core_get_params },
1143 { OSSL_FUNC_CORE_GET_LIBCTX, (void (*)(void))core_get_libctx },
1144 { OSSL_FUNC_CORE_THREAD_START, (void (*)(void))core_thread_start },
1146 { OSSL_FUNC_CORE_NEW_ERROR, (void (*)(void))core_new_error },
1147 { OSSL_FUNC_CORE_SET_ERROR_DEBUG, (void (*)(void))core_set_error_debug },
1148 { OSSL_FUNC_CORE_VSET_ERROR, (void (*)(void))core_vset_error },
1149 { OSSL_FUNC_CORE_SET_ERROR_MARK, (void (*)(void))core_set_error_mark },
1150 { OSSL_FUNC_CORE_CLEAR_LAST_ERROR_MARK,
1151 (void (*)(void))core_clear_last_error_mark },
1152 { OSSL_FUNC_CORE_POP_ERROR_TO_MARK, (void (*)(void))core_pop_error_to_mark },
1153 { OSSL_FUNC_BIO_NEW_FILE, (void (*)(void))BIO_new_file },
1154 { OSSL_FUNC_BIO_NEW_MEMBUF, (void (*)(void))BIO_new_mem_buf },
1155 { OSSL_FUNC_BIO_READ_EX, (void (*)(void))BIO_read_ex },
1156 { OSSL_FUNC_BIO_WRITE_EX, (void (*)(void))BIO_write_ex },
1157 { OSSL_FUNC_BIO_GETS, (void (*)(void))BIO_gets },
1158 { OSSL_FUNC_BIO_PUTS, (void (*)(void))BIO_puts },
1159 { OSSL_FUNC_BIO_CTRL, (void (*)(void))BIO_ctrl },
1160 { OSSL_FUNC_BIO_FREE, (void (*)(void))BIO_free },
1161 { OSSL_FUNC_BIO_VPRINTF, (void (*)(void))BIO_vprintf },
1162 { OSSL_FUNC_BIO_VSNPRINTF, (void (*)(void))BIO_vsnprintf },
1163 { OSSL_FUNC_SELF_TEST_CB, (void (*)(void))OSSL_SELF_TEST_get_callback },
1164 { OSSL_FUNC_GET_ENTROPY, (void (*)(void))ossl_rand_get_entropy },
1165 { OSSL_FUNC_CLEANUP_ENTROPY, (void (*)(void))ossl_rand_cleanup_entropy },
1166 { OSSL_FUNC_GET_NONCE, (void (*)(void))ossl_rand_get_nonce },
1167 { OSSL_FUNC_CLEANUP_NONCE, (void (*)(void))ossl_rand_cleanup_nonce },
1169 { OSSL_FUNC_CRYPTO_MALLOC, (void (*)(void))CRYPTO_malloc },
1170 { OSSL_FUNC_CRYPTO_ZALLOC, (void (*)(void))CRYPTO_zalloc },
1171 { OSSL_FUNC_CRYPTO_FREE, (void (*)(void))CRYPTO_free },
1172 { OSSL_FUNC_CRYPTO_CLEAR_FREE, (void (*)(void))CRYPTO_clear_free },
1173 { OSSL_FUNC_CRYPTO_REALLOC, (void (*)(void))CRYPTO_realloc },
1174 { OSSL_FUNC_CRYPTO_CLEAR_REALLOC, (void (*)(void))CRYPTO_clear_realloc },
1175 { OSSL_FUNC_CRYPTO_SECURE_MALLOC, (void (*)(void))CRYPTO_secure_malloc },
1176 { OSSL_FUNC_CRYPTO_SECURE_ZALLOC, (void (*)(void))CRYPTO_secure_zalloc },
1177 { OSSL_FUNC_CRYPTO_SECURE_FREE, (void (*)(void))CRYPTO_secure_free },
1178 { OSSL_FUNC_CRYPTO_SECURE_CLEAR_FREE,
1179 (void (*)(void))CRYPTO_secure_clear_free },
1180 { OSSL_FUNC_CRYPTO_SECURE_ALLOCATED,
1181 (void (*)(void))CRYPTO_secure_allocated },
1182 { OSSL_FUNC_OPENSSL_CLEANSE, (void (*)(void))OPENSSL_cleanse },
1186 static const OSSL_DISPATCH *core_dispatch = core_dispatch_;