2 * Copyright 2019-2020 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 "internal/nelem.h"
19 #include "internal/thread_once.h"
20 #include "internal/provider.h"
21 #include "internal/refcount.h"
22 #include "provider_local.h"
24 # include <openssl/self_test.h>
27 static OSSL_PROVIDER *provider_new(const char *name,
28 OSSL_provider_init_fn *init_function);
31 * Provider Object structure
32 * =========================
39 DEFINE_STACK_OF(INFOPAIR)
41 struct provider_store_st; /* Forward declaration */
43 struct ossl_provider_st {
45 unsigned int flag_initialized:1;
46 unsigned int flag_fallback:1; /* Can be used as fallback */
47 unsigned int flag_activated_as_fallback:1;
49 /* OpenSSL library side data */
50 CRYPTO_REF_COUNT refcnt;
51 CRYPTO_RWLOCK *refcnt_lock; /* For the ref counter */
55 OSSL_provider_init_fn *init_function;
56 STACK_OF(INFOPAIR) *parameters;
57 OPENSSL_CTX *libctx; /* The library context this instance is in */
58 struct provider_store_st *store; /* The store this instance belongs to */
61 * In the FIPS module inner provider, this isn't needed, since the
62 * error upcalls are always direct calls to the outer provider.
64 int error_lib; /* ERR library number, one for each provider */
65 # ifndef OPENSSL_NO_ERR
66 ERR_STRING_DATA *error_strings; /* Copy of what the provider gives us */
70 /* Provider side functions */
71 OSSL_FUNC_provider_teardown_fn *teardown;
72 OSSL_FUNC_provider_gettable_params_fn *gettable_params;
73 OSSL_FUNC_provider_get_params_fn *get_params;
74 OSSL_FUNC_provider_get_capabilities_fn *get_capabilities;
75 OSSL_FUNC_provider_self_test_fn *self_test;
76 OSSL_FUNC_provider_query_operation_fn *query_operation;
79 * Cache of bit to indicate of query_operation() has been called on
80 * a specific operation or not.
82 unsigned char *operation_bits;
83 size_t operation_bits_sz;
85 /* Provider side data */
88 DEFINE_STACK_OF(OSSL_PROVIDER)
90 static int ossl_provider_cmp(const OSSL_PROVIDER * const *a,
91 const OSSL_PROVIDER * const *b)
93 return strcmp((*a)->name, (*b)->name);
97 * Provider Object store
98 * =====================
100 * The Provider Object store is a library context object, and therefore needs
104 struct provider_store_st {
105 STACK_OF(OSSL_PROVIDER) *providers;
108 unsigned int use_fallbacks:1;
112 * provider_deactivate_free() is a wrapper around ossl_provider_free()
113 * that also makes sure that activated fallback providers are deactivated.
114 * This is simply done by freeing them an extra time, to compensate for the
115 * refcount that provider_activate_fallbacks() gives them.
116 * Since this is only called when the provider store is being emptied, we
117 * don't need to care about any lock.
119 static void provider_deactivate_free(OSSL_PROVIDER *prov)
121 int extra_free = (prov->flag_initialized
122 && prov->flag_activated_as_fallback);
125 ossl_provider_free(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(OPENSSL_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 CRYPTOerr(CRYPTO_F_PROVIDER_STORE_NEW, ERR_R_INTERNAL_ERROR);
173 prov->error_lib = ERR_get_next_error_library();
176 ossl_provider_set_fallback(prov);
182 static const OPENSSL_CTX_METHOD provider_store_method = {
187 static struct provider_store_st *get_provider_store(OPENSSL_CTX *libctx)
189 struct provider_store_st *store = NULL;
191 store = openssl_ctx_get_data(libctx, OPENSSL_CTX_PROVIDER_STORE_INDEX,
192 &provider_store_method);
194 CRYPTOerr(CRYPTO_F_GET_PROVIDER_STORE, ERR_R_INTERNAL_ERROR);
198 int ossl_provider_disable_fallback_loading(OPENSSL_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(OPENSSL_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
254 || !ossl_provider_up_ref(prov) /* +1 One reference to be returned */
255 || (prov->name = OPENSSL_strdup(name)) == NULL) {
256 ossl_provider_free(prov);
257 CRYPTOerr(CRYPTO_F_PROVIDER_NEW, ERR_R_MALLOC_FAILURE);
261 prov->init_function = init_function;
265 int ossl_provider_up_ref(OSSL_PROVIDER *prov)
269 if (CRYPTO_UP_REF(&prov->refcnt, &ref, prov->refcnt_lock) <= 0)
274 OSSL_PROVIDER *ossl_provider_new(OPENSSL_CTX *libctx, const char *name,
275 OSSL_provider_init_fn *init_function,
278 struct provider_store_st *store = NULL;
279 OSSL_PROVIDER *prov = NULL;
281 if ((store = get_provider_store(libctx)) == NULL)
284 if ((prov = ossl_provider_find(libctx, name,
285 noconfig)) != NULL) { /* refcount +1 */
286 ossl_provider_free(prov); /* refcount -1 */
287 ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_ALREADY_EXISTS, NULL,
292 /* provider_new() generates an error, so no need here */
293 if ((prov = provider_new(name, init_function)) == NULL)
296 CRYPTO_THREAD_write_lock(store->lock);
297 if (!ossl_provider_up_ref(prov)) { /* +1 One reference for the store */
298 ossl_provider_free(prov); /* -1 Reference that was to be returned */
300 } else if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
301 ossl_provider_free(prov); /* -1 Store reference */
302 ossl_provider_free(prov); /* -1 Reference that was to be returned */
305 prov->libctx = libctx;
308 prov->error_lib = ERR_get_next_error_library();
311 CRYPTO_THREAD_unlock(store->lock);
314 CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_NEW, ERR_R_MALLOC_FAILURE);
317 * At this point, the provider is only partially "loaded". To be
318 * fully "loaded", ossl_provider_activate() must also be called.
324 static void free_infopair(INFOPAIR *pair)
326 OPENSSL_free(pair->name);
327 OPENSSL_free(pair->value);
331 void ossl_provider_free(OSSL_PROVIDER *prov)
336 CRYPTO_DOWN_REF(&prov->refcnt, &ref, prov->refcnt_lock);
339 * When the refcount drops below two, the store is the only
340 * possible reference, or it has already been taken away from
341 * the store (this may happen if a provider was activated
342 * because it's a fallback, but isn't currently used)
343 * When that happens, the provider is inactivated.
345 if (ref < 2 && prov->flag_initialized) {
347 ossl_init_thread_deregister(prov);
349 if (prov->teardown != NULL)
350 prov->teardown(prov->provctx);
351 #ifndef OPENSSL_NO_ERR
353 if (prov->error_strings != NULL) {
354 ERR_unload_strings(prov->error_lib, prov->error_strings);
355 OPENSSL_free(prov->error_strings);
356 prov->error_strings = NULL;
360 OPENSSL_free(prov->operation_bits);
361 prov->operation_bits = NULL;
362 prov->operation_bits_sz = 0;
363 prov->flag_initialized = 0;
367 * When the refcount drops to zero, it has been taken out of
368 * the store. All we have to do here is clean it out.
372 DSO_free(prov->module);
374 OPENSSL_free(prov->name);
375 OPENSSL_free(prov->path);
376 sk_INFOPAIR_pop_free(prov->parameters, free_infopair);
378 CRYPTO_THREAD_lock_free(prov->refcnt_lock);
386 int ossl_provider_set_module_path(OSSL_PROVIDER *prov, const char *module_path)
388 OPENSSL_free(prov->path);
389 if (module_path == NULL)
391 if ((prov->path = OPENSSL_strdup(module_path)) != NULL)
393 CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_SET_MODULE_PATH, ERR_R_MALLOC_FAILURE);
397 int ossl_provider_add_parameter(OSSL_PROVIDER *prov,
398 const char *name, const char *value)
400 INFOPAIR *pair = NULL;
402 if ((pair = OPENSSL_zalloc(sizeof(*pair))) != NULL
403 && (prov->parameters != NULL
404 || (prov->parameters = sk_INFOPAIR_new_null()) != NULL)
405 && (pair->name = OPENSSL_strdup(name)) != NULL
406 && (pair->value = OPENSSL_strdup(value)) != NULL
407 && sk_INFOPAIR_push(prov->parameters, pair) > 0)
411 OPENSSL_free(pair->name);
412 OPENSSL_free(pair->value);
415 CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_ADD_PARAMETER, ERR_R_MALLOC_FAILURE);
420 * Provider activation.
422 * What "activation" means depends on the provider form; for built in
423 * providers (in the library or the application alike), the provider
424 * can already be considered to be loaded, all that's needed is to
425 * initialize it. However, for dynamically loadable provider modules,
426 * we must first load that module.
428 * Built in modules are distinguished from dynamically loaded modules
429 * with an already assigned init function.
431 static const OSSL_DISPATCH *core_dispatch; /* Define further down */
433 int OSSL_PROVIDER_set_default_search_path(OPENSSL_CTX *libctx, const char *path)
435 struct provider_store_st *store;
439 p = OPENSSL_strdup(path);
441 CRYPTOerr(0, ERR_R_MALLOC_FAILURE);
445 if ((store = get_provider_store(libctx)) != NULL
446 && CRYPTO_THREAD_write_lock(store->lock)) {
447 OPENSSL_free(store->default_path);
448 store->default_path = p;
449 CRYPTO_THREAD_unlock(store->lock);
457 * Internal version that doesn't affect the store flags, and thereby avoid
458 * locking. Direct callers must remember to set the store flags when
461 static int provider_activate(OSSL_PROVIDER *prov)
463 const OSSL_DISPATCH *provider_dispatch = NULL;
464 void *tmp_provctx = NULL; /* safety measure */
465 #ifndef OPENSSL_NO_ERR
467 OSSL_FUNC_provider_get_reason_strings_fn *p_get_reason_strings = NULL;
471 if (prov->flag_initialized)
475 * If the init function isn't set, it indicates that this provider is
478 if (prov->init_function == NULL) {
482 if (prov->module == NULL) {
483 char *allocated_path = NULL;
484 const char *module_path = NULL;
485 char *merged_path = NULL;
486 const char *load_dir = NULL;
487 struct provider_store_st *store;
489 if ((prov->module = DSO_new()) == NULL) {
490 /* DSO_new() generates an error already */
494 if ((store = get_provider_store(prov->libctx)) == NULL
495 || !CRYPTO_THREAD_read_lock(store->lock))
497 load_dir = store->default_path;
499 if (load_dir == NULL) {
500 load_dir = ossl_safe_getenv("OPENSSL_MODULES");
501 if (load_dir == NULL)
502 load_dir = MODULESDIR;
505 DSO_ctrl(prov->module, DSO_CTRL_SET_FLAGS,
506 DSO_FLAG_NAME_TRANSLATION_EXT_ONLY, NULL);
508 module_path = prov->path;
509 if (module_path == NULL)
510 module_path = allocated_path =
511 DSO_convert_filename(prov->module, prov->name);
512 if (module_path != NULL)
513 merged_path = DSO_merge(prov->module, module_path, load_dir);
514 CRYPTO_THREAD_unlock(store->lock);
516 if (merged_path == NULL
517 || (DSO_load(prov->module, merged_path, NULL, 0)) == NULL) {
518 DSO_free(prov->module);
522 OPENSSL_free(merged_path);
523 OPENSSL_free(allocated_path);
526 if (prov->module != NULL)
527 prov->init_function = (OSSL_provider_init_fn *)
528 DSO_bind_func(prov->module, "OSSL_provider_init");
532 /* Call the initialise function for the provider. */
533 if (prov->init_function == NULL
534 || !prov->init_function((OSSL_CORE_HANDLE *)prov, core_dispatch,
535 &provider_dispatch, &tmp_provctx)) {
536 ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_INIT_FAIL, NULL,
537 "name=%s", prov->name);
539 DSO_free(prov->module);
544 prov->provctx = tmp_provctx;
546 for (; provider_dispatch->function_id != 0; provider_dispatch++) {
547 switch (provider_dispatch->function_id) {
548 case OSSL_FUNC_PROVIDER_TEARDOWN:
550 OSSL_FUNC_provider_teardown(provider_dispatch);
552 case OSSL_FUNC_PROVIDER_GETTABLE_PARAMS:
553 prov->gettable_params =
554 OSSL_FUNC_provider_gettable_params(provider_dispatch);
556 case OSSL_FUNC_PROVIDER_GET_PARAMS:
558 OSSL_FUNC_provider_get_params(provider_dispatch);
560 case OSSL_FUNC_PROVIDER_SELF_TEST:
562 OSSL_FUNC_provider_self_test(provider_dispatch);
564 case OSSL_FUNC_PROVIDER_GET_CAPABILITIES:
565 prov->get_capabilities =
566 OSSL_FUNC_provider_get_capabilities(provider_dispatch);
568 case OSSL_FUNC_PROVIDER_QUERY_OPERATION:
569 prov->query_operation =
570 OSSL_FUNC_provider_query_operation(provider_dispatch);
572 #ifndef OPENSSL_NO_ERR
574 case OSSL_FUNC_PROVIDER_GET_REASON_STRINGS:
575 p_get_reason_strings =
576 OSSL_FUNC_provider_get_reason_strings(provider_dispatch);
583 #ifndef OPENSSL_NO_ERR
585 if (p_get_reason_strings != NULL) {
586 const OSSL_ITEM *reasonstrings = p_get_reason_strings(prov->provctx);
590 * ERR_load_strings() handles ERR_STRING_DATA rather than OSSL_ITEM,
591 * although they are essentially the same type.
592 * Furthermore, ERR_load_strings() patches the array's error number
593 * with the error library number, so we need to make a copy of that
597 while (reasonstrings[cnt].id != 0) {
598 if (ERR_GET_LIB(reasonstrings[cnt].id) != 0)
602 cnt++; /* One for the terminating item */
604 /* Allocate one extra item for the "library" name */
605 prov->error_strings =
606 OPENSSL_zalloc(sizeof(ERR_STRING_DATA) * (cnt + 1));
607 if (prov->error_strings == NULL)
611 * Set the "library" name.
613 prov->error_strings[0].error = ERR_PACK(prov->error_lib, 0, 0);
614 prov->error_strings[0].string = prov->name;
616 * Copy reasonstrings item 0..cnt-1 to prov->error_trings positions
619 for (cnt2 = 1; cnt2 <= cnt; cnt2++) {
620 prov->error_strings[cnt2].error = (int)reasonstrings[cnt2-1].id;
621 prov->error_strings[cnt2].string = reasonstrings[cnt2-1].ptr;
624 ERR_load_strings(prov->error_lib, prov->error_strings);
629 /* With this flag set, this provider has become fully "loaded". */
630 prov->flag_initialized = 1;
634 int ossl_provider_activate(OSSL_PROVIDER *prov)
636 if (provider_activate(prov)) {
637 CRYPTO_THREAD_write_lock(prov->store->lock);
638 prov->store->use_fallbacks = 0;
639 CRYPTO_THREAD_unlock(prov->store->lock);
646 void *ossl_provider_ctx(const OSSL_PROVIDER *prov)
648 return prov->provctx;
652 static int provider_forall_loaded(struct provider_store_st *store,
653 int *found_activated,
654 int (*cb)(OSSL_PROVIDER *provider,
662 num_provs = sk_OSSL_PROVIDER_num(store->providers);
664 if (found_activated != NULL)
665 *found_activated = 0;
666 for (i = 0; i < num_provs; i++) {
667 OSSL_PROVIDER *prov =
668 sk_OSSL_PROVIDER_value(store->providers, i);
670 if (prov->flag_initialized) {
671 if (found_activated != NULL)
672 *found_activated = 1;
673 if (!(ret = cb(prov, cbdata)))
682 * This function only does something once when store->use_fallbacks == 1,
683 * and then sets store->use_fallbacks = 0, so the second call and so on is
684 * effectively a no-op.
686 static void provider_activate_fallbacks(struct provider_store_st *store)
688 if (store->use_fallbacks) {
689 int num_provs = sk_OSSL_PROVIDER_num(store->providers);
690 int activated_fallback_count = 0;
693 for (i = 0; i < num_provs; i++) {
694 OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(store->providers, i);
697 * Activated fallback providers get an extra refcount, to
698 * simulate a regular load.
699 * Note that we don't care if the activation succeeds or not,
700 * other than to maintain a correct refcount. If the activation
701 * doesn't succeed, then any future attempt to use the fallback
702 * provider will fail anyway.
704 if (prov->flag_fallback) {
705 if (ossl_provider_up_ref(prov)) {
706 if (!provider_activate(prov)) {
707 ossl_provider_free(prov);
709 prov->flag_activated_as_fallback = 1;
710 activated_fallback_count++;
717 * We assume that all fallbacks have been added to the store before
718 * any fallback is activated.
719 * TODO: We may have to reconsider this, IF we find ourselves adding
720 * fallbacks after any previous fallback has been activated.
722 if (activated_fallback_count > 0)
723 store->use_fallbacks = 0;
727 int ossl_provider_forall_loaded(OPENSSL_CTX *ctx,
728 int (*cb)(OSSL_PROVIDER *provider,
733 struct provider_store_st *store = get_provider_store(ctx);
737 * Make sure any providers are loaded from config before we try to use
740 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
744 CRYPTO_THREAD_read_lock(store->lock);
746 provider_activate_fallbacks(store);
749 * Now, we sweep through all providers
751 ret = provider_forall_loaded(store, NULL, cb, cbdata);
753 CRYPTO_THREAD_unlock(store->lock);
759 int ossl_provider_available(OSSL_PROVIDER *prov)
762 CRYPTO_THREAD_read_lock(prov->store->lock);
763 provider_activate_fallbacks(prov->store);
764 CRYPTO_THREAD_unlock(prov->store->lock);
766 return prov->flag_initialized;
771 /* Setters of Provider Object data */
772 int ossl_provider_set_fallback(OSSL_PROVIDER *prov)
777 prov->flag_fallback = 1;
781 /* Getters of Provider Object data */
782 const char *ossl_provider_name(const OSSL_PROVIDER *prov)
787 const DSO *ossl_provider_dso(const OSSL_PROVIDER *prov)
792 const char *ossl_provider_module_name(const OSSL_PROVIDER *prov)
797 return DSO_get_filename(prov->module);
801 const char *ossl_provider_module_path(const OSSL_PROVIDER *prov)
806 /* FIXME: Ensure it's a full path */
807 return DSO_get_filename(prov->module);
811 void *ossl_provider_prov_ctx(const OSSL_PROVIDER *prov)
814 return prov->provctx;
819 OPENSSL_CTX *ossl_provider_library_context(const OSSL_PROVIDER *prov)
821 /* TODO(3.0) just: return prov->libctx; */
822 return prov != NULL ? prov->libctx : NULL;
825 /* Wrappers around calls to the provider */
826 void ossl_provider_teardown(const OSSL_PROVIDER *prov)
828 if (prov->teardown != NULL)
829 prov->teardown(prov->provctx);
832 const OSSL_PARAM *ossl_provider_gettable_params(const OSSL_PROVIDER *prov)
834 return prov->gettable_params == NULL
835 ? NULL : prov->gettable_params(prov->provctx);
838 int ossl_provider_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
840 return prov->get_params == NULL
841 ? 0 : prov->get_params(prov->provctx, params);
844 int ossl_provider_self_test(const OSSL_PROVIDER *prov)
848 if (prov->self_test == NULL)
850 ret = prov->self_test(prov->provctx);
852 evp_method_store_flush(ossl_provider_library_context(prov));
856 int ossl_provider_get_capabilities(const OSSL_PROVIDER *prov,
857 const char *capability,
861 return prov->get_capabilities == NULL
862 ? 1 : prov->get_capabilities(prov->provctx, capability, cb, arg);
865 const OSSL_ALGORITHM *ossl_provider_query_operation(const OSSL_PROVIDER *prov,
869 return prov->query_operation(prov->provctx, operation_id, no_cache);
872 int ossl_provider_set_operation_bit(OSSL_PROVIDER *provider, size_t bitnum)
874 size_t byte = bitnum / 8;
875 unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
877 if (provider->operation_bits_sz <= byte) {
878 provider->operation_bits = OPENSSL_realloc(provider->operation_bits,
880 if (provider->operation_bits == NULL) {
881 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
884 memset(provider->operation_bits + provider->operation_bits_sz,
885 '\0', byte + 1 - provider->operation_bits_sz);
887 provider->operation_bits[byte] |= bit;
891 int ossl_provider_test_operation_bit(OSSL_PROVIDER *provider, size_t bitnum,
894 size_t byte = bitnum / 8;
895 unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
897 if (!ossl_assert(result != NULL)) {
898 ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
903 if (provider->operation_bits_sz > byte)
904 *result = ((provider->operation_bits[byte] & bit) != 0);
909 * Core functions for the provider
910 * ===============================
912 * This is the set of functions that the core makes available to the provider
916 * This returns a list of Provider Object parameters with their types, for
917 * discovery. We do not expect that many providers will use this, but one
920 static const OSSL_PARAM param_types[] = {
921 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
922 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_PROV_NAME, OSSL_PARAM_UTF8_PTR,
925 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_MODULE_FILENAME, OSSL_PARAM_UTF8_PTR,
932 * Forward declare all the functions that are provided aa dispatch.
933 * This ensures that the compiler will complain if they aren't defined
934 * with the correct signature.
936 static OSSL_FUNC_core_gettable_params_fn core_gettable_params;
937 static OSSL_FUNC_core_get_params_fn core_get_params;
938 static OSSL_FUNC_core_thread_start_fn core_thread_start;
939 static OSSL_FUNC_core_get_library_context_fn core_get_libctx;
941 static OSSL_FUNC_core_new_error_fn core_new_error;
942 static OSSL_FUNC_core_set_error_debug_fn core_set_error_debug;
943 static OSSL_FUNC_core_vset_error_fn core_vset_error;
944 static OSSL_FUNC_core_set_error_mark_fn core_set_error_mark;
945 static OSSL_FUNC_core_clear_last_error_mark_fn core_clear_last_error_mark;
946 static OSSL_FUNC_core_pop_error_to_mark_fn core_pop_error_to_mark;
949 static const OSSL_PARAM *core_gettable_params(const OSSL_CORE_HANDLE *handle)
954 static int core_get_params(const OSSL_CORE_HANDLE *handle, OSSL_PARAM params[])
959 * We created this object originally and we know it is actually an
960 * OSSL_PROVIDER *, so the cast is safe
962 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
964 if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_VERSION)) != NULL)
965 OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR);
966 if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_PROV_NAME)) != NULL)
967 OSSL_PARAM_set_utf8_ptr(p, prov->name);
970 if ((p = OSSL_PARAM_locate(params,
971 OSSL_PROV_PARAM_CORE_MODULE_FILENAME)) != NULL)
972 OSSL_PARAM_set_utf8_ptr(p, ossl_provider_module_path(prov));
975 if (prov->parameters == NULL)
978 for (i = 0; i < sk_INFOPAIR_num(prov->parameters); i++) {
979 INFOPAIR *pair = sk_INFOPAIR_value(prov->parameters, i);
981 if ((p = OSSL_PARAM_locate(params, pair->name)) != NULL)
982 OSSL_PARAM_set_utf8_ptr(p, pair->value);
987 static OPENSSL_CORE_CTX *core_get_libctx(const OSSL_CORE_HANDLE *handle)
990 * We created this object originally and we know it is actually an
991 * OSSL_PROVIDER *, so the cast is safe
993 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
995 return (OPENSSL_CORE_CTX *)ossl_provider_library_context(prov);
998 static int core_thread_start(const OSSL_CORE_HANDLE *handle,
999 OSSL_thread_stop_handler_fn handfn)
1002 * We created this object originally and we know it is actually an
1003 * OSSL_PROVIDER *, so the cast is safe
1005 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1007 return ossl_init_thread_start(prov, prov->provctx, handfn);
1011 * The FIPS module inner provider doesn't implement these. They aren't
1012 * needed there, since the FIPS module upcalls are always the outer provider
1017 * TODO(3.0) These error functions should use |handle| to select the proper
1018 * library context to report in the correct error stack, at least if error
1019 * stacks become tied to the library context.
1020 * We cannot currently do that since there's no support for it in the
1023 static void core_new_error(const OSSL_CORE_HANDLE *handle)
1028 static void core_set_error_debug(const OSSL_CORE_HANDLE *handle,
1029 const char *file, int line, const char *func)
1031 ERR_set_debug(file, line, func);
1034 static void core_vset_error(const OSSL_CORE_HANDLE *handle,
1035 uint32_t reason, const char *fmt, va_list args)
1038 * We created this object originally and we know it is actually an
1039 * OSSL_PROVIDER *, so the cast is safe
1041 OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1044 * If the uppermost 8 bits are non-zero, it's an OpenSSL library
1045 * error and will be treated as such. Otherwise, it's a new style
1046 * provider error and will be treated as such.
1048 if (ERR_GET_LIB(reason) != 0) {
1049 ERR_vset_error(ERR_GET_LIB(reason), ERR_GET_REASON(reason), fmt, args);
1051 ERR_vset_error(prov->error_lib, (int)reason, fmt, args);
1055 static int core_set_error_mark(const OSSL_CORE_HANDLE *handle)
1057 return ERR_set_mark();
1060 static int core_clear_last_error_mark(const OSSL_CORE_HANDLE *handle)
1062 return ERR_clear_last_mark();
1065 static int core_pop_error_to_mark(const OSSL_CORE_HANDLE *handle)
1067 return ERR_pop_to_mark();
1069 #endif /* FIPS_MODULE */
1072 * Functions provided by the core. Blank line separates "families" of related
1075 static const OSSL_DISPATCH core_dispatch_[] = {
1076 { OSSL_FUNC_CORE_GETTABLE_PARAMS, (void (*)(void))core_gettable_params },
1077 { OSSL_FUNC_CORE_GET_PARAMS, (void (*)(void))core_get_params },
1078 { OSSL_FUNC_CORE_GET_LIBRARY_CONTEXT, (void (*)(void))core_get_libctx },
1079 { OSSL_FUNC_CORE_THREAD_START, (void (*)(void))core_thread_start },
1081 { OSSL_FUNC_CORE_NEW_ERROR, (void (*)(void))core_new_error },
1082 { OSSL_FUNC_CORE_SET_ERROR_DEBUG, (void (*)(void))core_set_error_debug },
1083 { OSSL_FUNC_CORE_VSET_ERROR, (void (*)(void))core_vset_error },
1084 { OSSL_FUNC_CORE_SET_ERROR_MARK, (void (*)(void))core_set_error_mark },
1085 { OSSL_FUNC_CORE_CLEAR_LAST_ERROR_MARK,
1086 (void (*)(void))core_clear_last_error_mark },
1087 { OSSL_FUNC_CORE_POP_ERROR_TO_MARK, (void (*)(void))core_pop_error_to_mark },
1088 { OSSL_FUNC_BIO_NEW_FILE, (void (*)(void))BIO_new_file },
1089 { OSSL_FUNC_BIO_NEW_MEMBUF, (void (*)(void))BIO_new_mem_buf },
1090 { OSSL_FUNC_BIO_READ_EX, (void (*)(void))BIO_read_ex },
1091 { OSSL_FUNC_BIO_WRITE_EX, (void (*)(void))BIO_write_ex },
1092 { OSSL_FUNC_BIO_GETS, (void (*)(void))BIO_gets },
1093 { OSSL_FUNC_BIO_PUTS, (void (*)(void))BIO_puts },
1094 { OSSL_FUNC_BIO_FREE, (void (*)(void))BIO_free },
1095 { OSSL_FUNC_BIO_VPRINTF, (void (*)(void))BIO_vprintf },
1096 { OSSL_FUNC_BIO_VSNPRINTF, (void (*)(void))BIO_vsnprintf },
1097 { OSSL_FUNC_SELF_TEST_CB, (void (*)(void))OSSL_SELF_TEST_get_callback },
1099 { OSSL_FUNC_CRYPTO_MALLOC, (void (*)(void))CRYPTO_malloc },
1100 { OSSL_FUNC_CRYPTO_ZALLOC, (void (*)(void))CRYPTO_zalloc },
1101 { OSSL_FUNC_CRYPTO_FREE, (void (*)(void))CRYPTO_free },
1102 { OSSL_FUNC_CRYPTO_CLEAR_FREE, (void (*)(void))CRYPTO_clear_free },
1103 { OSSL_FUNC_CRYPTO_REALLOC, (void (*)(void))CRYPTO_realloc },
1104 { OSSL_FUNC_CRYPTO_CLEAR_REALLOC, (void (*)(void))CRYPTO_clear_realloc },
1105 { OSSL_FUNC_CRYPTO_SECURE_MALLOC, (void (*)(void))CRYPTO_secure_malloc },
1106 { OSSL_FUNC_CRYPTO_SECURE_ZALLOC, (void (*)(void))CRYPTO_secure_zalloc },
1107 { OSSL_FUNC_CRYPTO_SECURE_FREE, (void (*)(void))CRYPTO_secure_free },
1108 { OSSL_FUNC_CRYPTO_SECURE_CLEAR_FREE,
1109 (void (*)(void))CRYPTO_secure_clear_free },
1110 { OSSL_FUNC_CRYPTO_SECURE_ALLOCATED,
1111 (void (*)(void))CRYPTO_secure_allocated },
1112 { OSSL_FUNC_OPENSSL_CLEANSE, (void (*)(void))OPENSSL_cleanse },
1116 static const OSSL_DISPATCH *core_dispatch = core_dispatch_;