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ebe3f24b3d
If an attempt is made to load a provider and it fails, the fall-back mechanism should be disabled to prevent the user getting some weird happening. E.g. a failure to load the FIPS provider should not allow the default to load as a fall-back. The OSSL_PROVIDER_try_load() call has been added, to allow a provider to be loaded without disabling the fall-back mechanism if it fails. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/12625)
130 lines
3.5 KiB
C
130 lines
3.5 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/err.h>
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#include <openssl/cryptoerr.h>
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#include <openssl/provider.h>
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#include <openssl/core_names.h>
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#include "internal/provider.h"
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OSSL_PROVIDER *OSSL_PROVIDER_try_load(OPENSSL_CTX *libctx, const char *name)
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{
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OSSL_PROVIDER *prov = NULL;
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/* Find it or create it */
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if ((prov = ossl_provider_find(libctx, name, 0)) == NULL
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&& (prov = ossl_provider_new(libctx, name, NULL, 0)) == NULL)
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return NULL;
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if (!ossl_provider_activate(prov)) {
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ossl_provider_free(prov);
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return NULL;
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}
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return prov;
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}
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OSSL_PROVIDER *OSSL_PROVIDER_load(OPENSSL_CTX *libctx, const char *name)
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{
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/* Any attempt to load a provider disables auto-loading of defaults */
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if (ossl_provider_disable_fallback_loading(libctx))
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return OSSL_PROVIDER_try_load(libctx, name);
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return NULL;
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}
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int OSSL_PROVIDER_unload(OSSL_PROVIDER *prov)
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{
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ossl_provider_free(prov);
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return 1;
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}
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int OSSL_PROVIDER_available(OPENSSL_CTX *libctx, const char *name)
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{
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OSSL_PROVIDER *prov = NULL;
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int available = 0;
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/* Find it or create it */
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prov = ossl_provider_find(libctx, name, 0);
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available = ossl_provider_available(prov);
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ossl_provider_free(prov);
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return available;
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}
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const OSSL_PARAM *OSSL_PROVIDER_gettable_params(const OSSL_PROVIDER *prov)
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{
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return ossl_provider_gettable_params(prov);
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}
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int OSSL_PROVIDER_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
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{
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return ossl_provider_get_params(prov, params);
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}
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const OSSL_ALGORITHM *OSSL_PROVIDER_query_operation(const OSSL_PROVIDER *prov,
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int operation_id,
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int *no_cache)
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{
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return ossl_provider_query_operation(prov, operation_id, no_cache);
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}
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void *OSSL_PROVIDER_get0_provider_ctx(const OSSL_PROVIDER *prov)
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{
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return ossl_provider_prov_ctx(prov);
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}
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int OSSL_PROVIDER_self_test(const OSSL_PROVIDER *prov)
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{
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return ossl_provider_self_test(prov);
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}
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int OSSL_PROVIDER_get_capabilities(const OSSL_PROVIDER *prov,
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const char *capability,
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OSSL_CALLBACK *cb,
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void *arg)
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{
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return ossl_provider_get_capabilities(prov, capability, cb, arg);
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}
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int OSSL_PROVIDER_add_builtin(OPENSSL_CTX *libctx, const char *name,
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OSSL_provider_init_fn *init_fn)
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{
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OSSL_PROVIDER *prov = NULL;
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if (name == NULL || init_fn == NULL) {
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CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_ADD_BUILTIN,
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ERR_R_PASSED_NULL_PARAMETER);
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return 0;
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}
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/* Create it */
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if ((prov = ossl_provider_new(libctx, name, init_fn, 0)) == NULL)
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return 0;
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/*
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* It's safely stored in the internal store at this point,
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* free the returned extra reference
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*/
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ossl_provider_free(prov);
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return 1;
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}
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const char *OSSL_PROVIDER_name(const OSSL_PROVIDER *prov)
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{
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return ossl_provider_name(prov);
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}
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int OSSL_PROVIDER_do_all(OPENSSL_CTX *ctx,
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int (*cb)(OSSL_PROVIDER *provider,
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void *cbdata),
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void *cbdata)
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{
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return ossl_provider_forall_loaded(ctx, cb, cbdata);
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}
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