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;
81 OSSL_FUNC_provider_unquery_operation_fn *unquery_operation;
84 * Cache of bit to indicate of query_operation() has been called on
85 * a specific operation or not.
87 unsigned char *operation_bits;
88 size_t operation_bits_sz;
89 CRYPTO_RWLOCK *opbits_lock;
91 /* Provider side data */
94 DEFINE_STACK_OF(OSSL_PROVIDER)
96 static int ossl_provider_cmp(const OSSL_PROVIDER * const *a,
97 const OSSL_PROVIDER * const *b)
99 return strcmp((*a)->name, (*b)->name);
103 * Provider Object store
104 * =====================
106 * The Provider Object store is a library context object, and therefore needs
110 struct provider_store_st {
111 STACK_OF(OSSL_PROVIDER) *providers;
114 unsigned int use_fallbacks:1;
118 * provider_deactivate_free() is a wrapper around ossl_provider_deactivate()
119 * and ossl_provider_free(), called as needed.
120 * Since this is only called when the provider store is being emptied, we
121 * don't need to care about any lock.
123 static void provider_deactivate_free(OSSL_PROVIDER *prov)
125 if (prov->flag_activated)
126 ossl_provider_deactivate(prov);
127 ossl_provider_free(prov);
130 static void provider_store_free(void *vstore)
132 struct provider_store_st *store = vstore;
136 OPENSSL_free(store->default_path);
137 sk_OSSL_PROVIDER_pop_free(store->providers, provider_deactivate_free);
138 CRYPTO_THREAD_lock_free(store->lock);
142 static void *provider_store_new(OSSL_LIB_CTX *ctx)
144 struct provider_store_st *store = OPENSSL_zalloc(sizeof(*store));
145 const struct predefined_providers_st *p = NULL;
148 || (store->providers = sk_OSSL_PROVIDER_new(ossl_provider_cmp)) == NULL
149 || (store->lock = CRYPTO_THREAD_lock_new()) == NULL) {
150 provider_store_free(store);
153 store->use_fallbacks = 1;
155 for (p = predefined_providers; p->name != NULL; p++) {
156 OSSL_PROVIDER *prov = NULL;
159 * We use the internal constructor directly here,
160 * otherwise we get a call loop
162 prov = provider_new(p->name, p->init);
165 || sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
166 ossl_provider_free(prov);
167 provider_store_free(store);
168 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
174 prov->error_lib = ERR_get_next_error_library();
177 ossl_provider_set_fallback(prov);
183 static const OSSL_LIB_CTX_METHOD provider_store_method = {
188 static struct provider_store_st *get_provider_store(OSSL_LIB_CTX *libctx)
190 struct provider_store_st *store = NULL;
192 store = ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_PROVIDER_STORE_INDEX,
193 &provider_store_method);
195 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
199 int ossl_provider_disable_fallback_loading(OSSL_LIB_CTX *libctx)
201 struct provider_store_st *store;
203 if ((store = get_provider_store(libctx)) != NULL) {
204 CRYPTO_THREAD_write_lock(store->lock);
205 store->use_fallbacks = 0;
206 CRYPTO_THREAD_unlock(store->lock);
212 OSSL_PROVIDER *ossl_provider_find(OSSL_LIB_CTX *libctx, const char *name,
215 struct provider_store_st *store = NULL;
216 OSSL_PROVIDER *prov = NULL;
218 if ((store = get_provider_store(libctx)) != NULL) {
219 OSSL_PROVIDER tmpl = { 0, };
224 * Make sure any providers are loaded from config before we try to find
228 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
231 tmpl.name = (char *)name;
232 CRYPTO_THREAD_write_lock(store->lock);
233 if ((i = sk_OSSL_PROVIDER_find(store->providers, &tmpl)) == -1
234 || (prov = sk_OSSL_PROVIDER_value(store->providers, i)) == NULL
235 || !ossl_provider_up_ref(prov))
237 CRYPTO_THREAD_unlock(store->lock);
244 * Provider Object methods
245 * =======================
248 static OSSL_PROVIDER *provider_new(const char *name,
249 OSSL_provider_init_fn *init_function)
251 OSSL_PROVIDER *prov = NULL;
253 if ((prov = OPENSSL_zalloc(sizeof(*prov))) == NULL
255 || (prov->refcnt_lock = CRYPTO_THREAD_lock_new()) == NULL
256 || (prov->activatecnt_lock = CRYPTO_THREAD_lock_new()) == NULL
258 || !ossl_provider_up_ref(prov) /* +1 One reference to be returned */
259 || (prov->opbits_lock = CRYPTO_THREAD_lock_new()) == NULL
260 || (prov->name = OPENSSL_strdup(name)) == NULL) {
261 ossl_provider_free(prov);
262 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
266 prov->init_function = init_function;
270 int ossl_provider_up_ref(OSSL_PROVIDER *prov)
274 if (CRYPTO_UP_REF(&prov->refcnt, &ref, prov->refcnt_lock) <= 0)
279 OSSL_PROVIDER *ossl_provider_new(OSSL_LIB_CTX *libctx, const char *name,
280 OSSL_provider_init_fn *init_function,
283 struct provider_store_st *store = NULL;
284 OSSL_PROVIDER *prov = NULL;
286 if ((store = get_provider_store(libctx)) == NULL)
289 if ((prov = ossl_provider_find(libctx, name,
290 noconfig)) != NULL) { /* refcount +1 */
291 ossl_provider_free(prov); /* refcount -1 */
292 ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_ALREADY_EXISTS,
297 /* provider_new() generates an error, so no need here */
298 if ((prov = provider_new(name, init_function)) == NULL)
301 CRYPTO_THREAD_write_lock(store->lock);
302 if (!ossl_provider_up_ref(prov)) { /* +1 One reference for the store */
303 ossl_provider_free(prov); /* -1 Reference that was to be returned */
305 } else if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
306 ossl_provider_free(prov); /* -1 Store reference */
307 ossl_provider_free(prov); /* -1 Reference that was to be returned */
310 prov->libctx = libctx;
313 prov->error_lib = ERR_get_next_error_library();
316 CRYPTO_THREAD_unlock(store->lock);
319 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
322 * At this point, the provider is only partially "loaded". To be
323 * fully "loaded", ossl_provider_activate() must also be called.
329 static void free_infopair(INFOPAIR *pair)
331 OPENSSL_free(pair->name);
332 OPENSSL_free(pair->value);
336 void ossl_provider_free(OSSL_PROVIDER *prov)
341 CRYPTO_DOWN_REF(&prov->refcnt, &ref, prov->refcnt_lock);
344 * When the refcount drops to zero, we clean up the provider.
345 * Note that this also does teardown, which may seem late,
346 * considering that init happens on first activation. However,
347 * there may be other structures hanging on to the provider after
348 * the last deactivation and may therefore need full access to the
349 * provider's services. Therefore, we deinit late.
352 if (prov->flag_initialized) {
354 ossl_init_thread_deregister(prov);
356 if (prov->teardown != NULL)
357 prov->teardown(prov->provctx);
358 #ifndef OPENSSL_NO_ERR
360 if (prov->error_strings != NULL) {
361 ERR_unload_strings(prov->error_lib, prov->error_strings);
362 OPENSSL_free(prov->error_strings);
363 prov->error_strings = NULL;
367 OPENSSL_free(prov->operation_bits);
368 prov->operation_bits = NULL;
369 prov->operation_bits_sz = 0;
370 prov->flag_initialized = 0;
374 DSO_free(prov->module);
376 OPENSSL_free(prov->name);
377 OPENSSL_free(prov->path);
378 sk_INFOPAIR_pop_free(prov->parameters, free_infopair);
379 CRYPTO_THREAD_lock_free(prov->opbits_lock);
381 CRYPTO_THREAD_lock_free(prov->refcnt_lock);
382 CRYPTO_THREAD_lock_free(prov->activatecnt_lock);
390 int ossl_provider_set_module_path(OSSL_PROVIDER *prov, const char *module_path)
392 OPENSSL_free(prov->path);
393 if (module_path == NULL)
395 if ((prov->path = OPENSSL_strdup(module_path)) != NULL)
397 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
401 int ossl_provider_add_parameter(OSSL_PROVIDER *prov,
402 const char *name, const char *value)
404 INFOPAIR *pair = NULL;
406 if ((pair = OPENSSL_zalloc(sizeof(*pair))) != NULL
407 && (prov->parameters != NULL
408 || (prov->parameters = sk_INFOPAIR_new_null()) != NULL)
409 && (pair->name = OPENSSL_strdup(name)) != NULL
410 && (pair->value = OPENSSL_strdup(value)) != NULL
411 && sk_INFOPAIR_push(prov->parameters, pair) > 0)
415 OPENSSL_free(pair->name);
416 OPENSSL_free(pair->value);
419 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
424 * Provider activation.
426 * What "activation" means depends on the provider form; for built in
427 * providers (in the library or the application alike), the provider
428 * can already be considered to be loaded, all that's needed is to
429 * initialize it. However, for dynamically loadable provider modules,
430 * we must first load that module.
432 * Built in modules are distinguished from dynamically loaded modules
433 * with an already assigned init function.
435 static const OSSL_DISPATCH *core_dispatch; /* Define further down */
437 int OSSL_PROVIDER_set_default_search_path(OSSL_LIB_CTX *libctx,
440 struct provider_store_st *store;
444 p = OPENSSL_strdup(path);
446 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
450 if ((store = get_provider_store(libctx)) != NULL
451 && CRYPTO_THREAD_write_lock(store->lock)) {
452 OPENSSL_free(store->default_path);
453 store->default_path = p;
454 CRYPTO_THREAD_unlock(store->lock);
462 * Internal version that doesn't affect the store flags, and thereby avoid
463 * locking. Direct callers must remember to set the store flags when
466 static int provider_init(OSSL_PROVIDER *prov)
468 const OSSL_DISPATCH *provider_dispatch = NULL;
469 void *tmp_provctx = NULL; /* safety measure */
470 #ifndef OPENSSL_NO_ERR
472 OSSL_FUNC_provider_get_reason_strings_fn *p_get_reason_strings = NULL;
476 if (prov->flag_initialized)
480 * If the init function isn't set, it indicates that this provider is
483 if (prov->init_function == NULL) {
487 if (prov->module == NULL) {
488 char *allocated_path = NULL;
489 const char *module_path = NULL;
490 char *merged_path = NULL;
491 const char *load_dir = NULL;
492 struct provider_store_st *store;
494 if ((prov->module = DSO_new()) == NULL) {
495 /* DSO_new() generates an error already */
499 if ((store = get_provider_store(prov->libctx)) == NULL
500 || !CRYPTO_THREAD_read_lock(store->lock))
502 load_dir = store->default_path;
504 if (load_dir == NULL) {
505 load_dir = ossl_safe_getenv("OPENSSL_MODULES");
506 if (load_dir == NULL)
507 load_dir = MODULESDIR;
510 DSO_ctrl(prov->module, DSO_CTRL_SET_FLAGS,
511 DSO_FLAG_NAME_TRANSLATION_EXT_ONLY, NULL);
513 module_path = prov->path;
514 if (module_path == NULL)
515 module_path = allocated_path =
516 DSO_convert_filename(prov->module, prov->name);
517 if (module_path != NULL)
518 merged_path = DSO_merge(prov->module, module_path, load_dir);
519 CRYPTO_THREAD_unlock(store->lock);
521 if (merged_path == NULL
522 || (DSO_load(prov->module, merged_path, NULL, 0)) == NULL) {
523 DSO_free(prov->module);
527 OPENSSL_free(merged_path);
528 OPENSSL_free(allocated_path);
531 if (prov->module != NULL)
532 prov->init_function = (OSSL_provider_init_fn *)
533 DSO_bind_func(prov->module, "OSSL_provider_init");
537 /* Call the initialise function for the provider. */
538 if (prov->init_function == NULL
539 || !prov->init_function((OSSL_CORE_HANDLE *)prov, core_dispatch,
540 &provider_dispatch, &tmp_provctx)) {
541 ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_INIT_FAIL,
542 "name=%s", prov->name);
544 DSO_free(prov->module);
549 prov->provctx = tmp_provctx;
551 for (; provider_dispatch->function_id != 0; provider_dispatch++) {
552 switch (provider_dispatch->function_id) {
553 case OSSL_FUNC_PROVIDER_TEARDOWN:
555 OSSL_FUNC_provider_teardown(provider_dispatch);
557 case OSSL_FUNC_PROVIDER_GETTABLE_PARAMS:
558 prov->gettable_params =
559 OSSL_FUNC_provider_gettable_params(provider_dispatch);
561 case OSSL_FUNC_PROVIDER_GET_PARAMS:
563 OSSL_FUNC_provider_get_params(provider_dispatch);
565 case OSSL_FUNC_PROVIDER_SELF_TEST:
567 OSSL_FUNC_provider_self_test(provider_dispatch);
569 case OSSL_FUNC_PROVIDER_GET_CAPABILITIES:
570 prov->get_capabilities =
571 OSSL_FUNC_provider_get_capabilities(provider_dispatch);
573 case OSSL_FUNC_PROVIDER_QUERY_OPERATION:
574 prov->query_operation =
575 OSSL_FUNC_provider_query_operation(provider_dispatch);
577 case OSSL_FUNC_PROVIDER_UNQUERY_OPERATION:
578 prov->unquery_operation =
579 OSSL_FUNC_provider_unquery_operation(provider_dispatch);
581 #ifndef OPENSSL_NO_ERR
583 case OSSL_FUNC_PROVIDER_GET_REASON_STRINGS:
584 p_get_reason_strings =
585 OSSL_FUNC_provider_get_reason_strings(provider_dispatch);
592 #ifndef OPENSSL_NO_ERR
594 if (p_get_reason_strings != NULL) {
595 const OSSL_ITEM *reasonstrings = p_get_reason_strings(prov->provctx);
599 * ERR_load_strings() handles ERR_STRING_DATA rather than OSSL_ITEM,
600 * although they are essentially the same type.
601 * Furthermore, ERR_load_strings() patches the array's error number
602 * with the error library number, so we need to make a copy of that
606 while (reasonstrings[cnt].id != 0) {
607 if (ERR_GET_LIB(reasonstrings[cnt].id) != 0)
611 cnt++; /* One for the terminating item */
613 /* Allocate one extra item for the "library" name */
614 prov->error_strings =
615 OPENSSL_zalloc(sizeof(ERR_STRING_DATA) * (cnt + 1));
616 if (prov->error_strings == NULL)
620 * Set the "library" name.
622 prov->error_strings[0].error = ERR_PACK(prov->error_lib, 0, 0);
623 prov->error_strings[0].string = prov->name;
625 * Copy reasonstrings item 0..cnt-1 to prov->error_trings positions
628 for (cnt2 = 1; cnt2 <= cnt; cnt2++) {
629 prov->error_strings[cnt2].error = (int)reasonstrings[cnt2-1].id;
630 prov->error_strings[cnt2].string = reasonstrings[cnt2-1].ptr;
633 ERR_load_strings(prov->error_lib, prov->error_strings);
638 /* With this flag set, this provider has become fully "loaded". */
639 prov->flag_initialized = 1;
643 static int provider_deactivate(OSSL_PROVIDER *prov)
647 if (!ossl_assert(prov != NULL))
650 if (CRYPTO_DOWN_REF(&prov->activatecnt, &ref, prov->activatecnt_lock) <= 0)
654 prov->flag_activated = 0;
656 /* We don't deinit here, that's done in ossl_provider_free() */
660 static int provider_activate(OSSL_PROVIDER *prov)
664 if (CRYPTO_UP_REF(&prov->activatecnt, &ref, prov->activatecnt_lock) <= 0)
667 if (provider_init(prov)) {
668 prov->flag_activated = 1;
673 provider_deactivate(prov);
677 int ossl_provider_activate(OSSL_PROVIDER *prov, int retain_fallbacks)
681 if (provider_activate(prov)) {
682 if (!retain_fallbacks) {
683 CRYPTO_THREAD_write_lock(prov->store->lock);
684 prov->store->use_fallbacks = 0;
685 CRYPTO_THREAD_unlock(prov->store->lock);
692 int ossl_provider_deactivate(OSSL_PROVIDER *prov)
696 return provider_deactivate(prov);
699 void *ossl_provider_ctx(const OSSL_PROVIDER *prov)
701 return prov->provctx;
705 static int provider_forall_loaded(struct provider_store_st *store,
706 int *found_activated,
707 int (*cb)(OSSL_PROVIDER *provider,
715 num_provs = sk_OSSL_PROVIDER_num(store->providers);
717 if (found_activated != NULL)
718 *found_activated = 0;
719 for (i = 0; i < num_provs; i++) {
720 OSSL_PROVIDER *prov =
721 sk_OSSL_PROVIDER_value(store->providers, i);
723 if (prov->flag_activated) {
724 if (found_activated != NULL)
725 *found_activated = 1;
726 if (!(ret = cb(prov, cbdata)))
735 * This function only does something once when store->use_fallbacks == 1,
736 * and then sets store->use_fallbacks = 0, so the second call and so on is
737 * effectively a no-op.
739 static void provider_activate_fallbacks(struct provider_store_st *store)
743 int activated_fallback_count = 0;
746 CRYPTO_THREAD_read_lock(store->lock);
747 use_fallbacks = store->use_fallbacks;
748 CRYPTO_THREAD_unlock(store->lock);
752 CRYPTO_THREAD_write_lock(store->lock);
753 /* Check again, just in case another thread changed it */
754 use_fallbacks = store->use_fallbacks;
755 if (!use_fallbacks) {
756 CRYPTO_THREAD_unlock(store->lock);
760 num_provs = sk_OSSL_PROVIDER_num(store->providers);
761 for (i = 0; i < num_provs; i++) {
762 OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(store->providers, i);
764 if (ossl_provider_up_ref(prov)) {
765 if (prov->flag_fallback) {
766 if (provider_activate(prov)) {
767 prov->flag_activated_as_fallback = 1;
768 activated_fallback_count++;
771 ossl_provider_free(prov);
776 * We assume that all fallbacks have been added to the store before
777 * any fallback is activated.
778 * TODO: We may have to reconsider this, IF we find ourselves adding
779 * fallbacks after any previous fallback has been activated.
781 if (activated_fallback_count > 0)
782 store->use_fallbacks = 0;
784 CRYPTO_THREAD_unlock(store->lock);
787 int ossl_provider_forall_loaded(OSSL_LIB_CTX *ctx,
788 int (*cb)(OSSL_PROVIDER *provider,
793 struct provider_store_st *store = get_provider_store(ctx);
797 * Make sure any providers are loaded from config before we try to use
800 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
804 provider_activate_fallbacks(store);
806 CRYPTO_THREAD_read_lock(store->lock);
808 * Now, we sweep through all providers
810 ret = provider_forall_loaded(store, NULL, cb, cbdata);
812 CRYPTO_THREAD_unlock(store->lock);
818 int ossl_provider_available(OSSL_PROVIDER *prov)
821 provider_activate_fallbacks(prov->store);
823 return prov->flag_activated;
828 /* Setters of Provider Object data */
829 int ossl_provider_set_fallback(OSSL_PROVIDER *prov)
834 prov->flag_fallback = 1;
838 /* Getters of Provider Object data */
839 const char *ossl_provider_name(const OSSL_PROVIDER *prov)
844 const DSO *ossl_provider_dso(const OSSL_PROVIDER *prov)
849 const char *ossl_provider_module_name(const OSSL_PROVIDER *prov)
854 return DSO_get_filename(prov->module);
858 const char *ossl_provider_module_path(const OSSL_PROVIDER *prov)
863 /* FIXME: Ensure it's a full path */
864 return DSO_get_filename(prov->module);
868 void *ossl_provider_prov_ctx(const OSSL_PROVIDER *prov)
871 return prov->provctx;
876 OSSL_LIB_CTX *ossl_provider_libctx(const OSSL_PROVIDER *prov)
878 /* TODO(3.0) just: return prov->libctx; */
879 return prov != NULL ? prov->libctx : NULL;
882 /* Wrappers around calls to the provider */
883 void ossl_provider_teardown(const OSSL_PROVIDER *prov)
885 if (prov->teardown != NULL)
886 prov->teardown(prov->provctx);
889 const OSSL_PARAM *ossl_provider_gettable_params(const OSSL_PROVIDER *prov)
891 return prov->gettable_params == NULL
892 ? NULL : prov->gettable_params(prov->provctx);
895 int ossl_provider_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
897 return prov->get_params == NULL
898 ? 0 : prov->get_params(prov->provctx, params);
901 int ossl_provider_self_test(const OSSL_PROVIDER *prov)
905 if (prov->self_test == NULL)
907 ret = prov->self_test(prov->provctx);
909 evp_method_store_flush(ossl_provider_libctx(prov));
913 int ossl_provider_get_capabilities(const OSSL_PROVIDER *prov,
914 const char *capability,
918 return prov->get_capabilities == NULL
919 ? 1 : prov->get_capabilities(prov->provctx, capability, cb, arg);
922 const OSSL_ALGORITHM *ossl_provider_query_operation(const OSSL_PROVIDER *prov,
926 const OSSL_ALGORITHM *res;
928 if (prov->query_operation == NULL)
930 res = prov->query_operation(prov->provctx, operation_id, no_cache);
931 #if defined(OPENSSL_NO_CACHED_FETCH)
932 /* Forcing the non-caching of queries */
933 if (no_cache != NULL)
939 void ossl_provider_unquery_operation(const OSSL_PROVIDER *prov,
941 const OSSL_ALGORITHM *algs)
943 if (prov->unquery_operation != NULL)
944 prov->unquery_operation(prov->provctx, operation_id, algs);
947 int ossl_provider_set_operation_bit(OSSL_PROVIDER *provider, size_t bitnum)
949 size_t byte = bitnum / 8;
950 unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
952 CRYPTO_THREAD_write_lock(provider->opbits_lock);
953 if (provider->operation_bits_sz <= byte) {
954 unsigned char *tmp = OPENSSL_realloc(provider->operation_bits,
958 CRYPTO_THREAD_unlock(provider->opbits_lock);
959 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
962 provider->operation_bits = tmp;
963 memset(provider->operation_bits + provider->operation_bits_sz,
964 '\0', byte + 1 - provider->operation_bits_sz);
965 provider->operation_bits_sz = byte + 1;
967 provider->operation_bits[byte] |= bit;
968 CRYPTO_THREAD_unlock(provider->opbits_lock);
972 int ossl_provider_test_operation_bit(OSSL_PROVIDER *provider, size_t bitnum,
975 size_t byte = bitnum / 8;
976 unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
978 if (!ossl_assert(result != NULL)) {
979 ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
984 CRYPTO_THREAD_read_lock(provider->opbits_lock);
985 if (provider->operation_bits_sz > byte)
986 *result = ((provider->operation_bits[byte] & bit) != 0);
987 CRYPTO_THREAD_unlock(provider->opbits_lock);
992 * Core functions for the provider
993 * ===============================
995 * This is the set of functions that the core makes available to the provider
999 * This returns a list of Provider Object parameters with their types, for
1000 * discovery. We do not expect that many providers will use this, but one
1003 static const OSSL_PARAM param_types[] = {
1004 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
1005 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_PROV_NAME, OSSL_PARAM_UTF8_PTR,
1008 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_MODULE_FILENAME, OSSL_PARAM_UTF8_PTR,
1015 * Forward declare all the functions that are provided aa dispatch.
1016 * This ensures that the compiler will complain if they aren't defined
1017 * with the correct signature.
1019 static OSSL_FUNC_core_gettable_params_fn core_gettable_params;
1020 static OSSL_FUNC_core_get_params_fn core_get_params;
1021 static OSSL_FUNC_core_thread_start_fn core_thread_start;
1022 static OSSL_FUNC_core_get_libctx_fn core_get_libctx;
1024 static OSSL_FUNC_core_new_error_fn core_new_error;
1025 static OSSL_FUNC_core_set_error_debug_fn core_set_error_debug;
1026 static OSSL_FUNC_core_vset_error_fn core_vset_error;
1027 static OSSL_FUNC_core_set_error_mark_fn core_set_error_mark;
1028 static OSSL_FUNC_core_clear_last_error_mark_fn core_clear_last_error_mark;
1029 static OSSL_FUNC_core_pop_error_to_mark_fn core_pop_error_to_mark;
1032 static const OSSL_PARAM *core_gettable_params(const OSSL_CORE_HANDLE *handle)
1037 static int core_get_params(const OSSL_CORE_HANDLE *handle, OSSL_PARAM params[])
1042 * We created this object originally and we know it is actually an
1043 * OSSL_PROVIDER *, so the cast is safe
1045 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1047 if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_VERSION)) != NULL)
1048 OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR);
1049 if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_PROV_NAME)) != NULL)
1050 OSSL_PARAM_set_utf8_ptr(p, prov->name);
1053 if ((p = OSSL_PARAM_locate(params,
1054 OSSL_PROV_PARAM_CORE_MODULE_FILENAME)) != NULL)
1055 OSSL_PARAM_set_utf8_ptr(p, ossl_provider_module_path(prov));
1058 if (prov->parameters == NULL)
1061 for (i = 0; i < sk_INFOPAIR_num(prov->parameters); i++) {
1062 INFOPAIR *pair = sk_INFOPAIR_value(prov->parameters, i);
1064 if ((p = OSSL_PARAM_locate(params, pair->name)) != NULL)
1065 OSSL_PARAM_set_utf8_ptr(p, pair->value);
1070 static OPENSSL_CORE_CTX *core_get_libctx(const OSSL_CORE_HANDLE *handle)
1073 * We created this object originally and we know it is actually an
1074 * OSSL_PROVIDER *, so the cast is safe
1076 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1078 return (OPENSSL_CORE_CTX *)ossl_provider_libctx(prov);
1081 static int core_thread_start(const OSSL_CORE_HANDLE *handle,
1082 OSSL_thread_stop_handler_fn handfn)
1085 * We created this object originally and we know it is actually an
1086 * OSSL_PROVIDER *, so the cast is safe
1088 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1090 return ossl_init_thread_start(prov, prov->provctx, handfn);
1094 * The FIPS module inner provider doesn't implement these. They aren't
1095 * needed there, since the FIPS module upcalls are always the outer provider
1100 * TODO(3.0) These error functions should use |handle| to select the proper
1101 * library context to report in the correct error stack, at least if error
1102 * stacks become tied to the library context.
1103 * We cannot currently do that since there's no support for it in the
1106 static void core_new_error(const OSSL_CORE_HANDLE *handle)
1111 static void core_set_error_debug(const OSSL_CORE_HANDLE *handle,
1112 const char *file, int line, const char *func)
1114 ERR_set_debug(file, line, func);
1117 static void core_vset_error(const OSSL_CORE_HANDLE *handle,
1118 uint32_t reason, const char *fmt, va_list args)
1121 * We created this object originally and we know it is actually an
1122 * OSSL_PROVIDER *, so the cast is safe
1124 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1127 * If the uppermost 8 bits are non-zero, it's an OpenSSL library
1128 * error and will be treated as such. Otherwise, it's a new style
1129 * provider error and will be treated as such.
1131 if (ERR_GET_LIB(reason) != 0) {
1132 ERR_vset_error(ERR_GET_LIB(reason), ERR_GET_REASON(reason), fmt, args);
1134 ERR_vset_error(prov->error_lib, (int)reason, fmt, args);
1138 static int core_set_error_mark(const OSSL_CORE_HANDLE *handle)
1140 return ERR_set_mark();
1143 static int core_clear_last_error_mark(const OSSL_CORE_HANDLE *handle)
1145 return ERR_clear_last_mark();
1148 static int core_pop_error_to_mark(const OSSL_CORE_HANDLE *handle)
1150 return ERR_pop_to_mark();
1152 #endif /* FIPS_MODULE */
1155 * Functions provided by the core.
1157 static const OSSL_DISPATCH core_dispatch_[] = {
1158 { OSSL_FUNC_CORE_GETTABLE_PARAMS, (void (*)(void))core_gettable_params },
1159 { OSSL_FUNC_CORE_GET_PARAMS, (void (*)(void))core_get_params },
1160 { OSSL_FUNC_CORE_GET_LIBCTX, (void (*)(void))core_get_libctx },
1161 { OSSL_FUNC_CORE_THREAD_START, (void (*)(void))core_thread_start },
1163 { OSSL_FUNC_CORE_NEW_ERROR, (void (*)(void))core_new_error },
1164 { OSSL_FUNC_CORE_SET_ERROR_DEBUG, (void (*)(void))core_set_error_debug },
1165 { OSSL_FUNC_CORE_VSET_ERROR, (void (*)(void))core_vset_error },
1166 { OSSL_FUNC_CORE_SET_ERROR_MARK, (void (*)(void))core_set_error_mark },
1167 { OSSL_FUNC_CORE_CLEAR_LAST_ERROR_MARK,
1168 (void (*)(void))core_clear_last_error_mark },
1169 { OSSL_FUNC_CORE_POP_ERROR_TO_MARK, (void (*)(void))core_pop_error_to_mark },
1170 { OSSL_FUNC_BIO_NEW_FILE, (void (*)(void))BIO_new_file },
1171 { OSSL_FUNC_BIO_NEW_MEMBUF, (void (*)(void))BIO_new_mem_buf },
1172 { OSSL_FUNC_BIO_READ_EX, (void (*)(void))BIO_read_ex },
1173 { OSSL_FUNC_BIO_WRITE_EX, (void (*)(void))BIO_write_ex },
1174 { OSSL_FUNC_BIO_GETS, (void (*)(void))BIO_gets },
1175 { OSSL_FUNC_BIO_PUTS, (void (*)(void))BIO_puts },
1176 { OSSL_FUNC_BIO_CTRL, (void (*)(void))BIO_ctrl },
1177 { OSSL_FUNC_BIO_FREE, (void (*)(void))BIO_free },
1178 { OSSL_FUNC_BIO_VPRINTF, (void (*)(void))BIO_vprintf },
1179 { OSSL_FUNC_BIO_VSNPRINTF, (void (*)(void))BIO_vsnprintf },
1180 { OSSL_FUNC_SELF_TEST_CB, (void (*)(void))OSSL_SELF_TEST_get_callback },
1181 { OSSL_FUNC_GET_ENTROPY, (void (*)(void))ossl_rand_get_entropy },
1182 { OSSL_FUNC_CLEANUP_ENTROPY, (void (*)(void))ossl_rand_cleanup_entropy },
1183 { OSSL_FUNC_GET_NONCE, (void (*)(void))ossl_rand_get_nonce },
1184 { OSSL_FUNC_CLEANUP_NONCE, (void (*)(void))ossl_rand_cleanup_nonce },
1186 { OSSL_FUNC_CRYPTO_MALLOC, (void (*)(void))CRYPTO_malloc },
1187 { OSSL_FUNC_CRYPTO_ZALLOC, (void (*)(void))CRYPTO_zalloc },
1188 { OSSL_FUNC_CRYPTO_FREE, (void (*)(void))CRYPTO_free },
1189 { OSSL_FUNC_CRYPTO_CLEAR_FREE, (void (*)(void))CRYPTO_clear_free },
1190 { OSSL_FUNC_CRYPTO_REALLOC, (void (*)(void))CRYPTO_realloc },
1191 { OSSL_FUNC_CRYPTO_CLEAR_REALLOC, (void (*)(void))CRYPTO_clear_realloc },
1192 { OSSL_FUNC_CRYPTO_SECURE_MALLOC, (void (*)(void))CRYPTO_secure_malloc },
1193 { OSSL_FUNC_CRYPTO_SECURE_ZALLOC, (void (*)(void))CRYPTO_secure_zalloc },
1194 { OSSL_FUNC_CRYPTO_SECURE_FREE, (void (*)(void))CRYPTO_secure_free },
1195 { OSSL_FUNC_CRYPTO_SECURE_CLEAR_FREE,
1196 (void (*)(void))CRYPTO_secure_clear_free },
1197 { OSSL_FUNC_CRYPTO_SECURE_ALLOCATED,
1198 (void (*)(void))CRYPTO_secure_allocated },
1199 { OSSL_FUNC_OPENSSL_CLEANSE, (void (*)(void))OPENSSL_cleanse },
1203 static const OSSL_DISPATCH *core_dispatch = core_dispatch_;