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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#pragma once
#include <stdbool.h>
/**
* openssl with OPENSSL_VERSION_NUMBER < 0x10100003L made data type details unavailable
* libressl use openssl with data type details available, but mandatorily set
* OPENSSL_VERSION_NUMBER = 0x20000000L, insane!
* https://github.com/aws/aws-sdk-cpp/pull/507/commits/2c99f1fe0c4b4683280caeb161538d4724d6a179
*/
#if defined(LIBRESSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER == 0x20000000L)
#undef OPENSSL_VERSION_NUMBER
#if LIBRESSL_VERSION_NUMBER < 0x3050000fL
#define OPENSSL_VERSION_NUMBER 0x1000107fL
#else
#define OPENSSL_VERSION_NUMBER 0x1010000fL
#endif
#endif
/* Per https://wiki.openssl.org/index.php/Manual:OPENSSL_VERSION_NUMBER(3)
* OPENSSL_VERSION_NUMBER in hex is: MNNFFRBB major minor fix final beta/patch.
* bitwise: MMMMNNNNNNNNFFFFFFFFRRRRBBBBBBBB
* For our purposes we're only concerned about major/minor/fix. Patch versions don't usually introduce
* features.
*/
#define S2N_OPENSSL_VERSION_AT_LEAST(major, minor, fix) \
(OPENSSL_VERSION_NUMBER >= ((major << 28) + (minor << 20) + (fix << 12)))
#if (S2N_OPENSSL_VERSION_AT_LEAST(1, 1, 0)) && (!defined(OPENSSL_IS_BORINGSSL)) && (!defined(OPENSSL_IS_AWSLC)) && (!defined(LIBRESSL_VERSION_NUMBER))
#define s2n_evp_ctx_init(ctx) POSIX_GUARD_OSSL(EVP_CIPHER_CTX_init(ctx), S2N_ERR_DRBG)
#define RESULT_EVP_CTX_INIT(ctx) RESULT_GUARD_OSSL(EVP_CIPHER_CTX_init(ctx), S2N_ERR_DRBG)
#else
#define s2n_evp_ctx_init(ctx) EVP_CIPHER_CTX_init(ctx)
#define RESULT_EVP_CTX_INIT(ctx) EVP_CIPHER_CTX_init(ctx)
#endif
#if !defined(OPENSSL_IS_BORINGSSL) && !defined(OPENSSL_FIPS) && !defined(LIBRESSL_VERSION_NUMBER) && !defined(OPENSSL_IS_AWSLC) && !defined(OPENSSL_NO_ENGINE)
#define S2N_LIBCRYPTO_SUPPORTS_CUSTOM_RAND 1
#else
#define S2N_LIBCRYPTO_SUPPORTS_CUSTOM_RAND 0
#endif
bool s2n_libcrypto_is_awslc();
bool s2n_libcrypto_is_boringssl();
bool s2n_libcrypto_is_libressl();
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