mirror of
https://github.com/openssl/openssl.git
synced 2024-12-03 05:41:46 +08:00
7dd2cb5693
The above function was running while holding the store lock with a read lock. Unfortunately it actually modifies the store, so a write lock is required instead. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/13660)
1178 lines
36 KiB
C
1178 lines
36 KiB
C
/*
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* Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/core.h>
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#include <openssl/core_dispatch.h>
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#include <openssl/core_names.h>
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#include <openssl/provider.h>
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#include <openssl/params.h>
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#include <openssl/opensslv.h>
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#include "crypto/cryptlib.h"
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#include "crypto/evp.h" /* evp_method_store_flush */
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#include "crypto/rand.h"
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#include "internal/nelem.h"
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#include "internal/thread_once.h"
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#include "internal/provider.h"
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#include "internal/refcount.h"
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#include "provider_local.h"
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#ifndef FIPS_MODULE
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# include <openssl/self_test.h>
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#endif
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static OSSL_PROVIDER *provider_new(const char *name,
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OSSL_provider_init_fn *init_function);
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/*-
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* Provider Object structure
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* =========================
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*/
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typedef struct {
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char *name;
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char *value;
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} INFOPAIR;
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DEFINE_STACK_OF(INFOPAIR)
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struct provider_store_st; /* Forward declaration */
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struct ossl_provider_st {
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/* Flag bits */
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unsigned int flag_initialized:1;
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unsigned int flag_activated:1;
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unsigned int flag_fallback:1; /* Can be used as fallback */
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unsigned int flag_activated_as_fallback:1;
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/* OpenSSL library side data */
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CRYPTO_REF_COUNT refcnt;
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CRYPTO_RWLOCK *refcnt_lock; /* For the ref counter */
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CRYPTO_REF_COUNT activatecnt;
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CRYPTO_RWLOCK *activatecnt_lock; /* For the activate counter */
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char *name;
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char *path;
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DSO *module;
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OSSL_provider_init_fn *init_function;
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STACK_OF(INFOPAIR) *parameters;
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OSSL_LIB_CTX *libctx; /* The library context this instance is in */
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struct provider_store_st *store; /* The store this instance belongs to */
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#ifndef FIPS_MODULE
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/*
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* In the FIPS module inner provider, this isn't needed, since the
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* error upcalls are always direct calls to the outer provider.
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*/
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int error_lib; /* ERR library number, one for each provider */
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# ifndef OPENSSL_NO_ERR
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ERR_STRING_DATA *error_strings; /* Copy of what the provider gives us */
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# endif
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#endif
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/* Provider side functions */
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OSSL_FUNC_provider_teardown_fn *teardown;
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OSSL_FUNC_provider_gettable_params_fn *gettable_params;
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OSSL_FUNC_provider_get_params_fn *get_params;
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OSSL_FUNC_provider_get_capabilities_fn *get_capabilities;
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OSSL_FUNC_provider_self_test_fn *self_test;
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OSSL_FUNC_provider_query_operation_fn *query_operation;
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/*
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* Cache of bit to indicate of query_operation() has been called on
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* a specific operation or not.
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*/
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unsigned char *operation_bits;
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size_t operation_bits_sz;
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CRYPTO_RWLOCK *opbits_lock;
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/* Provider side data */
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void *provctx;
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};
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DEFINE_STACK_OF(OSSL_PROVIDER)
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static int ossl_provider_cmp(const OSSL_PROVIDER * const *a,
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const OSSL_PROVIDER * const *b)
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{
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return strcmp((*a)->name, (*b)->name);
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}
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/*-
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* Provider Object store
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* =====================
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*
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* The Provider Object store is a library context object, and therefore needs
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* an index.
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*/
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struct provider_store_st {
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STACK_OF(OSSL_PROVIDER) *providers;
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CRYPTO_RWLOCK *lock;
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char *default_path;
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unsigned int use_fallbacks:1;
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};
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/*
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* provider_deactivate_free() is a wrapper around ossl_provider_deactivate()
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* and ossl_provider_free(), called as needed.
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* Since this is only called when the provider store is being emptied, we
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* don't need to care about any lock.
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*/
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static void provider_deactivate_free(OSSL_PROVIDER *prov)
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{
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if (prov->flag_activated)
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ossl_provider_deactivate(prov);
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ossl_provider_free(prov);
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}
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static void provider_store_free(void *vstore)
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{
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struct provider_store_st *store = vstore;
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if (store == NULL)
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return;
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OPENSSL_free(store->default_path);
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sk_OSSL_PROVIDER_pop_free(store->providers, provider_deactivate_free);
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CRYPTO_THREAD_lock_free(store->lock);
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OPENSSL_free(store);
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}
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static void *provider_store_new(OSSL_LIB_CTX *ctx)
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{
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struct provider_store_st *store = OPENSSL_zalloc(sizeof(*store));
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const struct predefined_providers_st *p = NULL;
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if (store == NULL
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|| (store->providers = sk_OSSL_PROVIDER_new(ossl_provider_cmp)) == NULL
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|| (store->lock = CRYPTO_THREAD_lock_new()) == NULL) {
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provider_store_free(store);
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return NULL;
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}
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store->use_fallbacks = 1;
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for (p = predefined_providers; p->name != NULL; p++) {
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OSSL_PROVIDER *prov = NULL;
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/*
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* We use the internal constructor directly here,
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* otherwise we get a call loop
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*/
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prov = provider_new(p->name, p->init);
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if (prov == NULL
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|| sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
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ossl_provider_free(prov);
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provider_store_free(store);
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
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return NULL;
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}
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prov->libctx = ctx;
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prov->store = store;
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#ifndef FIPS_MODULE
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prov->error_lib = ERR_get_next_error_library();
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#endif
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if(p->is_fallback)
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ossl_provider_set_fallback(prov);
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}
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return store;
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}
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static const OSSL_LIB_CTX_METHOD provider_store_method = {
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provider_store_new,
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provider_store_free,
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};
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static struct provider_store_st *get_provider_store(OSSL_LIB_CTX *libctx)
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{
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struct provider_store_st *store = NULL;
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store = ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_PROVIDER_STORE_INDEX,
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&provider_store_method);
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if (store == NULL)
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
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return store;
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}
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int ossl_provider_disable_fallback_loading(OSSL_LIB_CTX *libctx)
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{
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struct provider_store_st *store;
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if ((store = get_provider_store(libctx)) != NULL) {
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store->use_fallbacks = 0;
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return 1;
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}
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return 0;
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}
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OSSL_PROVIDER *ossl_provider_find(OSSL_LIB_CTX *libctx, const char *name,
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int noconfig)
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{
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struct provider_store_st *store = NULL;
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OSSL_PROVIDER *prov = NULL;
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if ((store = get_provider_store(libctx)) != NULL) {
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OSSL_PROVIDER tmpl = { 0, };
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int i;
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#ifndef FIPS_MODULE
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/*
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* Make sure any providers are loaded from config before we try to find
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* them.
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*/
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if (!noconfig)
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OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
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#endif
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tmpl.name = (char *)name;
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CRYPTO_THREAD_write_lock(store->lock);
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if ((i = sk_OSSL_PROVIDER_find(store->providers, &tmpl)) == -1
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|| (prov = sk_OSSL_PROVIDER_value(store->providers, i)) == NULL
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|| !ossl_provider_up_ref(prov))
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prov = NULL;
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CRYPTO_THREAD_unlock(store->lock);
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}
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return prov;
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}
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/*-
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* Provider Object methods
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* =======================
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*/
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static OSSL_PROVIDER *provider_new(const char *name,
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OSSL_provider_init_fn *init_function)
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{
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OSSL_PROVIDER *prov = NULL;
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if ((prov = OPENSSL_zalloc(sizeof(*prov))) == NULL
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#ifndef HAVE_ATOMICS
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|| (prov->refcnt_lock = CRYPTO_THREAD_lock_new()) == NULL
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|| (prov->activatecnt_lock = CRYPTO_THREAD_lock_new()) == NULL
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#endif
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|| !ossl_provider_up_ref(prov) /* +1 One reference to be returned */
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|| (prov->opbits_lock = CRYPTO_THREAD_lock_new()) == NULL
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|| (prov->name = OPENSSL_strdup(name)) == NULL) {
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ossl_provider_free(prov);
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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prov->init_function = init_function;
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return prov;
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}
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int ossl_provider_up_ref(OSSL_PROVIDER *prov)
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{
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int ref = 0;
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if (CRYPTO_UP_REF(&prov->refcnt, &ref, prov->refcnt_lock) <= 0)
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return 0;
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return ref;
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}
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OSSL_PROVIDER *ossl_provider_new(OSSL_LIB_CTX *libctx, const char *name,
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OSSL_provider_init_fn *init_function,
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int noconfig)
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{
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struct provider_store_st *store = NULL;
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OSSL_PROVIDER *prov = NULL;
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if ((store = get_provider_store(libctx)) == NULL)
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return NULL;
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if ((prov = ossl_provider_find(libctx, name,
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noconfig)) != NULL) { /* refcount +1 */
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ossl_provider_free(prov); /* refcount -1 */
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ERR_raise_data(ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_ALREADY_EXISTS,
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"name=%s", name);
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return NULL;
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}
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/* provider_new() generates an error, so no need here */
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if ((prov = provider_new(name, init_function)) == NULL)
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return NULL;
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CRYPTO_THREAD_write_lock(store->lock);
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if (!ossl_provider_up_ref(prov)) { /* +1 One reference for the store */
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ossl_provider_free(prov); /* -1 Reference that was to be returned */
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prov = NULL;
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} else if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
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ossl_provider_free(prov); /* -1 Store reference */
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ossl_provider_free(prov); /* -1 Reference that was to be returned */
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prov = NULL;
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} else {
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prov->libctx = libctx;
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prov->store = store;
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#ifndef FIPS_MODULE
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prov->error_lib = ERR_get_next_error_library();
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#endif
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}
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CRYPTO_THREAD_unlock(store->lock);
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if (prov == NULL)
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
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/*
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* At this point, the provider is only partially "loaded". To be
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* fully "loaded", ossl_provider_activate() must also be called.
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*/
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return prov;
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}
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static void free_infopair(INFOPAIR *pair)
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{
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OPENSSL_free(pair->name);
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OPENSSL_free(pair->value);
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OPENSSL_free(pair);
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}
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void ossl_provider_free(OSSL_PROVIDER *prov)
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{
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if (prov != NULL) {
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int ref = 0;
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CRYPTO_DOWN_REF(&prov->refcnt, &ref, prov->refcnt_lock);
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/*
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* When the refcount drops to zero, we clean up the provider.
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* Note that this also does teardown, which may seem late,
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* considering that init happens on first activation. However,
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* there may be other structures hanging on to the provider after
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* the last deactivation and may therefore need full access to the
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* provider's services. Therefore, we deinit late.
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*/
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if (ref == 0) {
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if (prov->flag_initialized) {
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#ifndef FIPS_MODULE
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ossl_init_thread_deregister(prov);
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#endif
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if (prov->teardown != NULL)
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prov->teardown(prov->provctx);
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#ifndef OPENSSL_NO_ERR
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# ifndef FIPS_MODULE
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if (prov->error_strings != NULL) {
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ERR_unload_strings(prov->error_lib, prov->error_strings);
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OPENSSL_free(prov->error_strings);
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prov->error_strings = NULL;
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}
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# endif
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#endif
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OPENSSL_free(prov->operation_bits);
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prov->operation_bits = NULL;
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prov->operation_bits_sz = 0;
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prov->flag_initialized = 0;
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}
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#ifndef FIPS_MODULE
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DSO_free(prov->module);
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#endif
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OPENSSL_free(prov->name);
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OPENSSL_free(prov->path);
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sk_INFOPAIR_pop_free(prov->parameters, free_infopair);
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CRYPTO_THREAD_lock_free(prov->opbits_lock);
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#ifndef HAVE_ATOMICS
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CRYPTO_THREAD_lock_free(prov->refcnt_lock);
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CRYPTO_THREAD_lock_free(prov->activatecnt_lock);
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#endif
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OPENSSL_free(prov);
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}
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}
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}
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/* Setters */
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int ossl_provider_set_module_path(OSSL_PROVIDER *prov, const char *module_path)
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{
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OPENSSL_free(prov->path);
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if (module_path == NULL)
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return 1;
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if ((prov->path = OPENSSL_strdup(module_path)) != NULL)
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return 1;
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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int ossl_provider_add_parameter(OSSL_PROVIDER *prov,
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const char *name, const char *value)
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{
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INFOPAIR *pair = NULL;
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if ((pair = OPENSSL_zalloc(sizeof(*pair))) != NULL
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&& (prov->parameters != NULL
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|| (prov->parameters = sk_INFOPAIR_new_null()) != NULL)
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&& (pair->name = OPENSSL_strdup(name)) != NULL
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&& (pair->value = OPENSSL_strdup(value)) != NULL
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&& sk_INFOPAIR_push(prov->parameters, pair) > 0)
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return 1;
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if (pair != NULL) {
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OPENSSL_free(pair->name);
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OPENSSL_free(pair->value);
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OPENSSL_free(pair);
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}
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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/*
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* Provider activation.
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*
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* What "activation" means depends on the provider form; for built in
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* providers (in the library or the application alike), the provider
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* can already be considered to be loaded, all that's needed is to
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* initialize it. However, for dynamically loadable provider modules,
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* we must first load that module.
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*
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* Built in modules are distinguished from dynamically loaded modules
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* with an already assigned init function.
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*/
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static const OSSL_DISPATCH *core_dispatch; /* Define further down */
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int OSSL_PROVIDER_set_default_search_path(OSSL_LIB_CTX *libctx,
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const char *path)
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{
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struct provider_store_st *store;
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char *p = NULL;
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if (path != NULL) {
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p = OPENSSL_strdup(path);
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if (p == NULL) {
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if ((store = get_provider_store(libctx)) != NULL
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&& CRYPTO_THREAD_write_lock(store->lock)) {
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OPENSSL_free(store->default_path);
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store->default_path = p;
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CRYPTO_THREAD_unlock(store->lock);
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return 1;
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}
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OPENSSL_free(p);
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return 0;
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}
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/*
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* Internal version that doesn't affect the store flags, and thereby avoid
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* locking. Direct callers must remember to set the store flags when
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* appropriate.
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*/
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static int provider_init(OSSL_PROVIDER *prov)
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{
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const OSSL_DISPATCH *provider_dispatch = NULL;
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void *tmp_provctx = NULL; /* safety measure */
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#ifndef OPENSSL_NO_ERR
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# ifndef FIPS_MODULE
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OSSL_FUNC_provider_get_reason_strings_fn *p_get_reason_strings = NULL;
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# endif
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#endif
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|
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if (prov->flag_initialized)
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return 1;
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|
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/*
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* If the init function isn't set, it indicates that this provider is
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* a loadable module.
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*/
|
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if (prov->init_function == NULL) {
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#ifdef FIPS_MODULE
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return 0;
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#else
|
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if (prov->module == NULL) {
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char *allocated_path = NULL;
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const char *module_path = NULL;
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char *merged_path = NULL;
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const char *load_dir = NULL;
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struct provider_store_st *store;
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if ((prov->module = DSO_new()) == NULL) {
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/* DSO_new() generates an error already */
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return 0;
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}
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if ((store = get_provider_store(prov->libctx)) == NULL
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|| !CRYPTO_THREAD_read_lock(store->lock))
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return 0;
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load_dir = store->default_path;
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if (load_dir == NULL) {
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load_dir = ossl_safe_getenv("OPENSSL_MODULES");
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if (load_dir == NULL)
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load_dir = MODULESDIR;
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}
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DSO_ctrl(prov->module, DSO_CTRL_SET_FLAGS,
|
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DSO_FLAG_NAME_TRANSLATION_EXT_ONLY, NULL);
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module_path = prov->path;
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if (module_path == NULL)
|
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module_path = allocated_path =
|
|
DSO_convert_filename(prov->module, prov->name);
|
|
if (module_path != NULL)
|
|
merged_path = DSO_merge(prov->module, module_path, load_dir);
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
|
|
if (merged_path == NULL
|
|
|| (DSO_load(prov->module, merged_path, NULL, 0)) == NULL) {
|
|
DSO_free(prov->module);
|
|
prov->module = NULL;
|
|
}
|
|
|
|
OPENSSL_free(merged_path);
|
|
OPENSSL_free(allocated_path);
|
|
}
|
|
|
|
if (prov->module != NULL)
|
|
prov->init_function = (OSSL_provider_init_fn *)
|
|
DSO_bind_func(prov->module, "OSSL_provider_init");
|
|
#endif
|
|
}
|
|
|
|
/* Call the initialise function for the provider. */
|
|
if (prov->init_function == NULL
|
|
|| !prov->init_function((OSSL_CORE_HANDLE *)prov, core_dispatch,
|
|
&provider_dispatch, &tmp_provctx)) {
|
|
ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_INIT_FAIL,
|
|
"name=%s", prov->name);
|
|
#ifndef FIPS_MODULE
|
|
DSO_free(prov->module);
|
|
prov->module = NULL;
|
|
#endif
|
|
return 0;
|
|
}
|
|
prov->provctx = tmp_provctx;
|
|
|
|
for (; provider_dispatch->function_id != 0; provider_dispatch++) {
|
|
switch (provider_dispatch->function_id) {
|
|
case OSSL_FUNC_PROVIDER_TEARDOWN:
|
|
prov->teardown =
|
|
OSSL_FUNC_provider_teardown(provider_dispatch);
|
|
break;
|
|
case OSSL_FUNC_PROVIDER_GETTABLE_PARAMS:
|
|
prov->gettable_params =
|
|
OSSL_FUNC_provider_gettable_params(provider_dispatch);
|
|
break;
|
|
case OSSL_FUNC_PROVIDER_GET_PARAMS:
|
|
prov->get_params =
|
|
OSSL_FUNC_provider_get_params(provider_dispatch);
|
|
break;
|
|
case OSSL_FUNC_PROVIDER_SELF_TEST:
|
|
prov->self_test =
|
|
OSSL_FUNC_provider_self_test(provider_dispatch);
|
|
break;
|
|
case OSSL_FUNC_PROVIDER_GET_CAPABILITIES:
|
|
prov->get_capabilities =
|
|
OSSL_FUNC_provider_get_capabilities(provider_dispatch);
|
|
break;
|
|
case OSSL_FUNC_PROVIDER_QUERY_OPERATION:
|
|
prov->query_operation =
|
|
OSSL_FUNC_provider_query_operation(provider_dispatch);
|
|
break;
|
|
#ifndef OPENSSL_NO_ERR
|
|
# ifndef FIPS_MODULE
|
|
case OSSL_FUNC_PROVIDER_GET_REASON_STRINGS:
|
|
p_get_reason_strings =
|
|
OSSL_FUNC_provider_get_reason_strings(provider_dispatch);
|
|
break;
|
|
# endif
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_ERR
|
|
# ifndef FIPS_MODULE
|
|
if (p_get_reason_strings != NULL) {
|
|
const OSSL_ITEM *reasonstrings = p_get_reason_strings(prov->provctx);
|
|
size_t cnt, cnt2;
|
|
|
|
/*
|
|
* ERR_load_strings() handles ERR_STRING_DATA rather than OSSL_ITEM,
|
|
* although they are essentially the same type.
|
|
* Furthermore, ERR_load_strings() patches the array's error number
|
|
* with the error library number, so we need to make a copy of that
|
|
* array either way.
|
|
*/
|
|
cnt = 0;
|
|
while (reasonstrings[cnt].id != 0) {
|
|
if (ERR_GET_LIB(reasonstrings[cnt].id) != 0)
|
|
return 0;
|
|
cnt++;
|
|
}
|
|
cnt++; /* One for the terminating item */
|
|
|
|
/* Allocate one extra item for the "library" name */
|
|
prov->error_strings =
|
|
OPENSSL_zalloc(sizeof(ERR_STRING_DATA) * (cnt + 1));
|
|
if (prov->error_strings == NULL)
|
|
return 0;
|
|
|
|
/*
|
|
* Set the "library" name.
|
|
*/
|
|
prov->error_strings[0].error = ERR_PACK(prov->error_lib, 0, 0);
|
|
prov->error_strings[0].string = prov->name;
|
|
/*
|
|
* Copy reasonstrings item 0..cnt-1 to prov->error_trings positions
|
|
* 1..cnt.
|
|
*/
|
|
for (cnt2 = 1; cnt2 <= cnt; cnt2++) {
|
|
prov->error_strings[cnt2].error = (int)reasonstrings[cnt2-1].id;
|
|
prov->error_strings[cnt2].string = reasonstrings[cnt2-1].ptr;
|
|
}
|
|
|
|
ERR_load_strings(prov->error_lib, prov->error_strings);
|
|
}
|
|
# endif
|
|
#endif
|
|
|
|
/* With this flag set, this provider has become fully "loaded". */
|
|
prov->flag_initialized = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int provider_deactivate(OSSL_PROVIDER *prov)
|
|
{
|
|
int ref = 0;
|
|
|
|
if (!ossl_assert(prov != NULL))
|
|
return 0;
|
|
|
|
if (CRYPTO_DOWN_REF(&prov->activatecnt, &ref, prov->activatecnt_lock) <= 0)
|
|
return 0;
|
|
|
|
if (ref < 1)
|
|
prov->flag_activated = 0;
|
|
|
|
/* We don't deinit here, that's done in ossl_provider_free() */
|
|
return 1;
|
|
}
|
|
|
|
static int provider_activate(OSSL_PROVIDER *prov)
|
|
{
|
|
int ref = 0;
|
|
|
|
if (CRYPTO_UP_REF(&prov->activatecnt, &ref, prov->activatecnt_lock) <= 0)
|
|
return 0;
|
|
|
|
if (provider_init(prov)) {
|
|
prov->flag_activated = 1;
|
|
|
|
return 1;
|
|
}
|
|
|
|
provider_deactivate(prov);
|
|
return 0;
|
|
}
|
|
|
|
int ossl_provider_activate(OSSL_PROVIDER *prov)
|
|
{
|
|
if (prov == NULL)
|
|
return 0;
|
|
if (provider_activate(prov)) {
|
|
CRYPTO_THREAD_write_lock(prov->store->lock);
|
|
prov->store->use_fallbacks = 0;
|
|
CRYPTO_THREAD_unlock(prov->store->lock);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ossl_provider_deactivate(OSSL_PROVIDER *prov)
|
|
{
|
|
if (prov == NULL)
|
|
return 0;
|
|
return provider_deactivate(prov);
|
|
}
|
|
|
|
void *ossl_provider_ctx(const OSSL_PROVIDER *prov)
|
|
{
|
|
return prov->provctx;
|
|
}
|
|
|
|
|
|
static int provider_forall_loaded(struct provider_store_st *store,
|
|
int *found_activated,
|
|
int (*cb)(OSSL_PROVIDER *provider,
|
|
void *cbdata),
|
|
void *cbdata)
|
|
{
|
|
int i;
|
|
int ret = 1;
|
|
int num_provs;
|
|
|
|
num_provs = sk_OSSL_PROVIDER_num(store->providers);
|
|
|
|
if (found_activated != NULL)
|
|
*found_activated = 0;
|
|
for (i = 0; i < num_provs; i++) {
|
|
OSSL_PROVIDER *prov =
|
|
sk_OSSL_PROVIDER_value(store->providers, i);
|
|
|
|
if (prov->flag_activated) {
|
|
if (found_activated != NULL)
|
|
*found_activated = 1;
|
|
if (!(ret = cb(prov, cbdata)))
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* This function only does something once when store->use_fallbacks == 1,
|
|
* and then sets store->use_fallbacks = 0, so the second call and so on is
|
|
* effectively a no-op.
|
|
*/
|
|
static void provider_activate_fallbacks(struct provider_store_st *store)
|
|
{
|
|
int use_fallbacks;
|
|
int num_provs;
|
|
int activated_fallback_count = 0;
|
|
int i;
|
|
|
|
CRYPTO_THREAD_read_lock(store->lock);
|
|
use_fallbacks = store->use_fallbacks;
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
if (!use_fallbacks)
|
|
return;
|
|
|
|
CRYPTO_THREAD_write_lock(store->lock);
|
|
/* Check again, just in case another thread changed it */
|
|
use_fallbacks = store->use_fallbacks;
|
|
if (!use_fallbacks) {
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
return;
|
|
}
|
|
|
|
num_provs = sk_OSSL_PROVIDER_num(store->providers);
|
|
for (i = 0; i < num_provs; i++) {
|
|
OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(store->providers, i);
|
|
|
|
if (ossl_provider_up_ref(prov)) {
|
|
if (prov->flag_fallback) {
|
|
if (provider_activate(prov)) {
|
|
prov->flag_activated_as_fallback = 1;
|
|
activated_fallback_count++;
|
|
}
|
|
}
|
|
ossl_provider_free(prov);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We assume that all fallbacks have been added to the store before
|
|
* any fallback is activated.
|
|
* TODO: We may have to reconsider this, IF we find ourselves adding
|
|
* fallbacks after any previous fallback has been activated.
|
|
*/
|
|
if (activated_fallback_count > 0)
|
|
store->use_fallbacks = 0;
|
|
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
}
|
|
|
|
int ossl_provider_forall_loaded(OSSL_LIB_CTX *ctx,
|
|
int (*cb)(OSSL_PROVIDER *provider,
|
|
void *cbdata),
|
|
void *cbdata)
|
|
{
|
|
int ret = 1;
|
|
struct provider_store_st *store = get_provider_store(ctx);
|
|
|
|
#ifndef FIPS_MODULE
|
|
/*
|
|
* Make sure any providers are loaded from config before we try to use
|
|
* them.
|
|
*/
|
|
OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
|
|
#endif
|
|
|
|
if (store != NULL) {
|
|
provider_activate_fallbacks(store);
|
|
|
|
CRYPTO_THREAD_read_lock(store->lock);
|
|
/*
|
|
* Now, we sweep through all providers
|
|
*/
|
|
ret = provider_forall_loaded(store, NULL, cb, cbdata);
|
|
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int ossl_provider_available(OSSL_PROVIDER *prov)
|
|
{
|
|
if (prov != NULL) {
|
|
provider_activate_fallbacks(prov->store);
|
|
|
|
return prov->flag_activated;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Setters of Provider Object data */
|
|
int ossl_provider_set_fallback(OSSL_PROVIDER *prov)
|
|
{
|
|
if (prov == NULL)
|
|
return 0;
|
|
|
|
prov->flag_fallback = 1;
|
|
return 1;
|
|
}
|
|
|
|
/* Getters of Provider Object data */
|
|
const char *ossl_provider_name(const OSSL_PROVIDER *prov)
|
|
{
|
|
return prov->name;
|
|
}
|
|
|
|
const DSO *ossl_provider_dso(const OSSL_PROVIDER *prov)
|
|
{
|
|
return prov->module;
|
|
}
|
|
|
|
const char *ossl_provider_module_name(const OSSL_PROVIDER *prov)
|
|
{
|
|
#ifdef FIPS_MODULE
|
|
return NULL;
|
|
#else
|
|
return DSO_get_filename(prov->module);
|
|
#endif
|
|
}
|
|
|
|
const char *ossl_provider_module_path(const OSSL_PROVIDER *prov)
|
|
{
|
|
#ifdef FIPS_MODULE
|
|
return NULL;
|
|
#else
|
|
/* FIXME: Ensure it's a full path */
|
|
return DSO_get_filename(prov->module);
|
|
#endif
|
|
}
|
|
|
|
void *ossl_provider_prov_ctx(const OSSL_PROVIDER *prov)
|
|
{
|
|
if (prov != NULL)
|
|
return prov->provctx;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
OSSL_LIB_CTX *ossl_provider_libctx(const OSSL_PROVIDER *prov)
|
|
{
|
|
/* TODO(3.0) just: return prov->libctx; */
|
|
return prov != NULL ? prov->libctx : NULL;
|
|
}
|
|
|
|
/* Wrappers around calls to the provider */
|
|
void ossl_provider_teardown(const OSSL_PROVIDER *prov)
|
|
{
|
|
if (prov->teardown != NULL)
|
|
prov->teardown(prov->provctx);
|
|
}
|
|
|
|
const OSSL_PARAM *ossl_provider_gettable_params(const OSSL_PROVIDER *prov)
|
|
{
|
|
return prov->gettable_params == NULL
|
|
? NULL : prov->gettable_params(prov->provctx);
|
|
}
|
|
|
|
int ossl_provider_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
|
|
{
|
|
return prov->get_params == NULL
|
|
? 0 : prov->get_params(prov->provctx, params);
|
|
}
|
|
|
|
int ossl_provider_self_test(const OSSL_PROVIDER *prov)
|
|
{
|
|
int ret;
|
|
|
|
if (prov->self_test == NULL)
|
|
return 1;
|
|
ret = prov->self_test(prov->provctx);
|
|
if (ret == 0)
|
|
evp_method_store_flush(ossl_provider_libctx(prov));
|
|
return ret;
|
|
}
|
|
|
|
int ossl_provider_get_capabilities(const OSSL_PROVIDER *prov,
|
|
const char *capability,
|
|
OSSL_CALLBACK *cb,
|
|
void *arg)
|
|
{
|
|
return prov->get_capabilities == NULL
|
|
? 1 : prov->get_capabilities(prov->provctx, capability, cb, arg);
|
|
}
|
|
|
|
const OSSL_ALGORITHM *ossl_provider_query_operation(const OSSL_PROVIDER *prov,
|
|
int operation_id,
|
|
int *no_cache)
|
|
{
|
|
return prov->query_operation == NULL
|
|
? NULL : prov->query_operation(prov->provctx, operation_id, no_cache);
|
|
}
|
|
|
|
int ossl_provider_set_operation_bit(OSSL_PROVIDER *provider, size_t bitnum)
|
|
{
|
|
size_t byte = bitnum / 8;
|
|
unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
|
|
|
|
CRYPTO_THREAD_write_lock(provider->opbits_lock);
|
|
if (provider->operation_bits_sz <= byte) {
|
|
unsigned char *tmp = OPENSSL_realloc(provider->operation_bits,
|
|
byte + 1);
|
|
|
|
if (tmp == NULL) {
|
|
CRYPTO_THREAD_unlock(provider->opbits_lock);
|
|
ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
provider->operation_bits = tmp;
|
|
memset(provider->operation_bits + provider->operation_bits_sz,
|
|
'\0', byte + 1 - provider->operation_bits_sz);
|
|
provider->operation_bits_sz = byte + 1;
|
|
}
|
|
provider->operation_bits[byte] |= bit;
|
|
CRYPTO_THREAD_unlock(provider->opbits_lock);
|
|
return 1;
|
|
}
|
|
|
|
int ossl_provider_test_operation_bit(OSSL_PROVIDER *provider, size_t bitnum,
|
|
int *result)
|
|
{
|
|
size_t byte = bitnum / 8;
|
|
unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
|
|
|
|
if (!ossl_assert(result != NULL)) {
|
|
ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
|
|
return 0;
|
|
}
|
|
|
|
*result = 0;
|
|
CRYPTO_THREAD_read_lock(provider->opbits_lock);
|
|
if (provider->operation_bits_sz > byte)
|
|
*result = ((provider->operation_bits[byte] & bit) != 0);
|
|
CRYPTO_THREAD_unlock(provider->opbits_lock);
|
|
return 1;
|
|
}
|
|
|
|
/*-
|
|
* Core functions for the provider
|
|
* ===============================
|
|
*
|
|
* This is the set of functions that the core makes available to the provider
|
|
*/
|
|
|
|
/*
|
|
* This returns a list of Provider Object parameters with their types, for
|
|
* discovery. We do not expect that many providers will use this, but one
|
|
* never knows.
|
|
*/
|
|
static const OSSL_PARAM param_types[] = {
|
|
OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
|
|
OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_PROV_NAME, OSSL_PARAM_UTF8_PTR,
|
|
NULL, 0),
|
|
#ifndef FIPS_MODULE
|
|
OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_MODULE_FILENAME, OSSL_PARAM_UTF8_PTR,
|
|
NULL, 0),
|
|
#endif
|
|
OSSL_PARAM_END
|
|
};
|
|
|
|
/*
|
|
* Forward declare all the functions that are provided aa dispatch.
|
|
* This ensures that the compiler will complain if they aren't defined
|
|
* with the correct signature.
|
|
*/
|
|
static OSSL_FUNC_core_gettable_params_fn core_gettable_params;
|
|
static OSSL_FUNC_core_get_params_fn core_get_params;
|
|
static OSSL_FUNC_core_thread_start_fn core_thread_start;
|
|
static OSSL_FUNC_core_get_libctx_fn core_get_libctx;
|
|
#ifndef FIPS_MODULE
|
|
static OSSL_FUNC_core_new_error_fn core_new_error;
|
|
static OSSL_FUNC_core_set_error_debug_fn core_set_error_debug;
|
|
static OSSL_FUNC_core_vset_error_fn core_vset_error;
|
|
static OSSL_FUNC_core_set_error_mark_fn core_set_error_mark;
|
|
static OSSL_FUNC_core_clear_last_error_mark_fn core_clear_last_error_mark;
|
|
static OSSL_FUNC_core_pop_error_to_mark_fn core_pop_error_to_mark;
|
|
#endif
|
|
|
|
static const OSSL_PARAM *core_gettable_params(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
return param_types;
|
|
}
|
|
|
|
static int core_get_params(const OSSL_CORE_HANDLE *handle, OSSL_PARAM params[])
|
|
{
|
|
int i;
|
|
OSSL_PARAM *p;
|
|
/*
|
|
* We created this object originally and we know it is actually an
|
|
* OSSL_PROVIDER *, so the cast is safe
|
|
*/
|
|
OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
|
|
|
|
if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_VERSION)) != NULL)
|
|
OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR);
|
|
if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_PROV_NAME)) != NULL)
|
|
OSSL_PARAM_set_utf8_ptr(p, prov->name);
|
|
|
|
#ifndef FIPS_MODULE
|
|
if ((p = OSSL_PARAM_locate(params,
|
|
OSSL_PROV_PARAM_CORE_MODULE_FILENAME)) != NULL)
|
|
OSSL_PARAM_set_utf8_ptr(p, ossl_provider_module_path(prov));
|
|
#endif
|
|
|
|
if (prov->parameters == NULL)
|
|
return 1;
|
|
|
|
for (i = 0; i < sk_INFOPAIR_num(prov->parameters); i++) {
|
|
INFOPAIR *pair = sk_INFOPAIR_value(prov->parameters, i);
|
|
|
|
if ((p = OSSL_PARAM_locate(params, pair->name)) != NULL)
|
|
OSSL_PARAM_set_utf8_ptr(p, pair->value);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static OPENSSL_CORE_CTX *core_get_libctx(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
/*
|
|
* We created this object originally and we know it is actually an
|
|
* OSSL_PROVIDER *, so the cast is safe
|
|
*/
|
|
OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
|
|
|
|
return (OPENSSL_CORE_CTX *)ossl_provider_libctx(prov);
|
|
}
|
|
|
|
static int core_thread_start(const OSSL_CORE_HANDLE *handle,
|
|
OSSL_thread_stop_handler_fn handfn)
|
|
{
|
|
/*
|
|
* We created this object originally and we know it is actually an
|
|
* OSSL_PROVIDER *, so the cast is safe
|
|
*/
|
|
OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
|
|
|
|
return ossl_init_thread_start(prov, prov->provctx, handfn);
|
|
}
|
|
|
|
/*
|
|
* The FIPS module inner provider doesn't implement these. They aren't
|
|
* needed there, since the FIPS module upcalls are always the outer provider
|
|
* ones.
|
|
*/
|
|
#ifndef FIPS_MODULE
|
|
/*
|
|
* TODO(3.0) These error functions should use |handle| to select the proper
|
|
* library context to report in the correct error stack, at least if error
|
|
* stacks become tied to the library context.
|
|
* We cannot currently do that since there's no support for it in the
|
|
* ERR subsystem.
|
|
*/
|
|
static void core_new_error(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
ERR_new();
|
|
}
|
|
|
|
static void core_set_error_debug(const OSSL_CORE_HANDLE *handle,
|
|
const char *file, int line, const char *func)
|
|
{
|
|
ERR_set_debug(file, line, func);
|
|
}
|
|
|
|
static void core_vset_error(const OSSL_CORE_HANDLE *handle,
|
|
uint32_t reason, const char *fmt, va_list args)
|
|
{
|
|
/*
|
|
* We created this object originally and we know it is actually an
|
|
* OSSL_PROVIDER *, so the cast is safe
|
|
*/
|
|
OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
|
|
|
|
/*
|
|
* If the uppermost 8 bits are non-zero, it's an OpenSSL library
|
|
* error and will be treated as such. Otherwise, it's a new style
|
|
* provider error and will be treated as such.
|
|
*/
|
|
if (ERR_GET_LIB(reason) != 0) {
|
|
ERR_vset_error(ERR_GET_LIB(reason), ERR_GET_REASON(reason), fmt, args);
|
|
} else {
|
|
ERR_vset_error(prov->error_lib, (int)reason, fmt, args);
|
|
}
|
|
}
|
|
|
|
static int core_set_error_mark(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
return ERR_set_mark();
|
|
}
|
|
|
|
static int core_clear_last_error_mark(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
return ERR_clear_last_mark();
|
|
}
|
|
|
|
static int core_pop_error_to_mark(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
return ERR_pop_to_mark();
|
|
}
|
|
#endif /* FIPS_MODULE */
|
|
|
|
/*
|
|
* Functions provided by the core.
|
|
*/
|
|
static const OSSL_DISPATCH core_dispatch_[] = {
|
|
{ OSSL_FUNC_CORE_GETTABLE_PARAMS, (void (*)(void))core_gettable_params },
|
|
{ OSSL_FUNC_CORE_GET_PARAMS, (void (*)(void))core_get_params },
|
|
{ OSSL_FUNC_CORE_GET_LIBCTX, (void (*)(void))core_get_libctx },
|
|
{ OSSL_FUNC_CORE_THREAD_START, (void (*)(void))core_thread_start },
|
|
#ifndef FIPS_MODULE
|
|
{ OSSL_FUNC_CORE_NEW_ERROR, (void (*)(void))core_new_error },
|
|
{ OSSL_FUNC_CORE_SET_ERROR_DEBUG, (void (*)(void))core_set_error_debug },
|
|
{ OSSL_FUNC_CORE_VSET_ERROR, (void (*)(void))core_vset_error },
|
|
{ OSSL_FUNC_CORE_SET_ERROR_MARK, (void (*)(void))core_set_error_mark },
|
|
{ OSSL_FUNC_CORE_CLEAR_LAST_ERROR_MARK,
|
|
(void (*)(void))core_clear_last_error_mark },
|
|
{ OSSL_FUNC_CORE_POP_ERROR_TO_MARK, (void (*)(void))core_pop_error_to_mark },
|
|
{ OSSL_FUNC_BIO_NEW_FILE, (void (*)(void))BIO_new_file },
|
|
{ OSSL_FUNC_BIO_NEW_MEMBUF, (void (*)(void))BIO_new_mem_buf },
|
|
{ OSSL_FUNC_BIO_READ_EX, (void (*)(void))BIO_read_ex },
|
|
{ OSSL_FUNC_BIO_WRITE_EX, (void (*)(void))BIO_write_ex },
|
|
{ OSSL_FUNC_BIO_GETS, (void (*)(void))BIO_gets },
|
|
{ OSSL_FUNC_BIO_PUTS, (void (*)(void))BIO_puts },
|
|
{ OSSL_FUNC_BIO_CTRL, (void (*)(void))BIO_ctrl },
|
|
{ OSSL_FUNC_BIO_FREE, (void (*)(void))BIO_free },
|
|
{ OSSL_FUNC_BIO_VPRINTF, (void (*)(void))BIO_vprintf },
|
|
{ OSSL_FUNC_BIO_VSNPRINTF, (void (*)(void))BIO_vsnprintf },
|
|
{ OSSL_FUNC_SELF_TEST_CB, (void (*)(void))OSSL_SELF_TEST_get_callback },
|
|
{ OSSL_FUNC_GET_ENTROPY, (void (*)(void))ossl_rand_get_entropy },
|
|
{ OSSL_FUNC_CLEANUP_ENTROPY, (void (*)(void))ossl_rand_cleanup_entropy },
|
|
{ OSSL_FUNC_GET_NONCE, (void (*)(void))ossl_rand_get_nonce },
|
|
{ OSSL_FUNC_CLEANUP_NONCE, (void (*)(void))ossl_rand_cleanup_nonce },
|
|
#endif
|
|
{ OSSL_FUNC_CRYPTO_MALLOC, (void (*)(void))CRYPTO_malloc },
|
|
{ OSSL_FUNC_CRYPTO_ZALLOC, (void (*)(void))CRYPTO_zalloc },
|
|
{ OSSL_FUNC_CRYPTO_FREE, (void (*)(void))CRYPTO_free },
|
|
{ OSSL_FUNC_CRYPTO_CLEAR_FREE, (void (*)(void))CRYPTO_clear_free },
|
|
{ OSSL_FUNC_CRYPTO_REALLOC, (void (*)(void))CRYPTO_realloc },
|
|
{ OSSL_FUNC_CRYPTO_CLEAR_REALLOC, (void (*)(void))CRYPTO_clear_realloc },
|
|
{ OSSL_FUNC_CRYPTO_SECURE_MALLOC, (void (*)(void))CRYPTO_secure_malloc },
|
|
{ OSSL_FUNC_CRYPTO_SECURE_ZALLOC, (void (*)(void))CRYPTO_secure_zalloc },
|
|
{ OSSL_FUNC_CRYPTO_SECURE_FREE, (void (*)(void))CRYPTO_secure_free },
|
|
{ OSSL_FUNC_CRYPTO_SECURE_CLEAR_FREE,
|
|
(void (*)(void))CRYPTO_secure_clear_free },
|
|
{ OSSL_FUNC_CRYPTO_SECURE_ALLOCATED,
|
|
(void (*)(void))CRYPTO_secure_allocated },
|
|
{ OSSL_FUNC_OPENSSL_CLEANSE, (void (*)(void))OPENSSL_cleanse },
|
|
|
|
{ 0, NULL }
|
|
};
|
|
static const OSSL_DISPATCH *core_dispatch = core_dispatch_;
|