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A provider could be linked against a different version of libcrypto than the version of libcrypto that loaded the provider. Different versions of libcrypto could define opaque types differently. It must never occur that a type created in one libcrypto is used directly by the other libcrypto. This will cause crashes. We can "cheat" for "built-in" providers that are part of libcrypto itself, because we know that the two libcrypto versions are the same - but not for other providers. To ensure this does not occur we use different types names for the handful of opaque types that are passed between the core and providers. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/11758)
41 lines
1.3 KiB
C
41 lines
1.3 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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#ifndef OSSL_PROV_PROVIDER_CTX_H
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# define OSSL_PROV_PROVIDER_CTX_H
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# include <openssl/types.h>
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# include <openssl/crypto.h>
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# include <openssl/bio.h>
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# include <openssl/core.h>
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typedef struct prov_ctx_st {
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const OSSL_CORE_HANDLE *handle;
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OPENSSL_CTX *libctx; /* For all provider modules */
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BIO_METHOD *corebiometh;
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} PROV_CTX;
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/*
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* To be used anywhere the library context needs to be passed, such as to
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* fetching functions.
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*/
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# define PROV_LIBRARY_CONTEXT_OF(provctx) \
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PROV_CTX_get0_library_context((provctx))
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PROV_CTX *PROV_CTX_new(void);
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void PROV_CTX_free(PROV_CTX *ctx);
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void PROV_CTX_set0_library_context(PROV_CTX *ctx, OPENSSL_CTX *libctx);
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void PROV_CTX_set0_handle(PROV_CTX *ctx, const OSSL_CORE_HANDLE *handle);
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void PROV_CTX_set0_core_bio_method(PROV_CTX *ctx, BIO_METHOD *corebiometh);
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OPENSSL_CTX *PROV_CTX_get0_library_context(PROV_CTX *ctx);
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const OSSL_CORE_HANDLE *PROV_CTX_get0_handle(PROV_CTX *ctx);
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BIO_METHOD *PROV_CTX_get0_core_bio_method(PROV_CTX *ctx);
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#endif
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