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305 lines
9.9 KiB
C
305 lines
9.9 KiB
C
/*
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* Copyright 2019-2021 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 OPENSSL_MACROS_H
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# define OPENSSL_MACROS_H
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# pragma once
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#include <openssl/opensslconf.h>
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#include <openssl/opensslv.h>
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/* Helper macros for CPP string composition */
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# define OPENSSL_MSTR_HELPER(x) #x
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# define OPENSSL_MSTR(x) OPENSSL_MSTR_HELPER(x)
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/*
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* Sometimes OPENSSL_NO_xxx ends up with an empty file and some compilers
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* don't like that. This will hopefully silence them.
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*/
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# define NON_EMPTY_TRANSLATION_UNIT static void *dummy = &dummy;
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/*
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* Generic deprecation macro
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*
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* If OPENSSL_SUPPRESS_DEPRECATED is defined, then OSSL_DEPRECATED and
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* OSSL_DEPRECATED_FOR become no-ops
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*/
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# ifndef OSSL_DEPRECATED
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# undef OSSL_DEPRECATED_FOR
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# ifndef OPENSSL_SUPPRESS_DEPRECATED
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# if defined(_MSC_VER)
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/*
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* MSVC supports __declspec(deprecated) since MSVC 2003 (13.10),
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* and __declspec(deprecated(message)) since MSVC 2005 (14.00)
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*/
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# if _MSC_VER >= 1400
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# define OSSL_DEPRECATED(since) \
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__declspec(deprecated("Since OpenSSL " # since))
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# define OSSL_DEPRECATED_FOR(since, message) \
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__declspec(deprecated("Since OpenSSL " # since ";" message))
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# elif _MSC_VER >= 1310
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# define OSSL_DEPRECATED(since) __declspec(deprecated)
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# define OSSL_DEPRECATED_FOR(since, message) __declspec(deprecated)
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# endif
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# elif defined(__GNUC__)
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/*
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* According to GCC documentation, deprecations with message appeared in
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* GCC 4.5.0
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*/
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# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
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# define OSSL_DEPRECATED(since) \
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__attribute__((deprecated("Since OpenSSL " # since)))
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# define OSSL_DEPRECATED_FOR(since, message) \
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__attribute__((deprecated("Since OpenSSL " # since ";" message)))
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# elif __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0)
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# define OSSL_DEPRECATED(since) __attribute__((deprecated))
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# define OSSL_DEPRECATED_FOR(since, message) __attribute__((deprecated))
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# endif
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# elif defined(__SUNPRO_C)
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# if (__SUNPRO_C >= 0x5130)
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# define OSSL_DEPRECATED(since) __attribute__ ((deprecated))
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# define OSSL_DEPRECATED_FOR(since, message) __attribute__ ((deprecated))
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# endif
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# endif
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# endif
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# endif
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/*
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* Still not defined? Then define no-op macros. This means these macros
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* are unsuitable for use in a typedef.
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*/
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# ifndef OSSL_DEPRECATED
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# define OSSL_DEPRECATED(since) extern
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# define OSSL_DEPRECATED_FOR(since, message) extern
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# endif
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/*
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* Applications should use -DOPENSSL_API_COMPAT=<version> to suppress the
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* declarations of functions deprecated in or before <version>. If this is
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* undefined, the value of the macro OPENSSL_CONFIGURED_API (defined in
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* <openssl/opensslconf.h>) is the default.
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*
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* For any version number up until version 1.1.x, <version> is expected to be
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* the calculated version number 0xMNNFFPPSL.
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* For version numbers 3.0 and on, <version> is expected to be a computation
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* of the major and minor numbers in decimal using this formula:
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*
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* MAJOR * 10000 + MINOR * 100
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*
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* So version 3.0 becomes 30000, version 3.2 becomes 30200, etc.
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*/
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/*
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* We use the OPENSSL_API_COMPAT value to define API level macros. These
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* macros are used to enable or disable features at that API version boundary.
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*/
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# ifdef OPENSSL_API_LEVEL
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# error "OPENSSL_API_LEVEL must not be defined by application"
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# endif
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/*
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* We figure out what API level was intended by simple numeric comparison.
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* The lowest old style number we recognise is 0x00908000L, so we take some
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* safety margin and assume that anything below 0x00900000L is a new style
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* number. This allows new versions up to and including v943.71.83.
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*/
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# ifdef OPENSSL_API_COMPAT
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# if OPENSSL_API_COMPAT < 0x900000L
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# define OPENSSL_API_LEVEL (OPENSSL_API_COMPAT)
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# else
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# define OPENSSL_API_LEVEL \
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(((OPENSSL_API_COMPAT >> 28) & 0xF) * 10000 \
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+ ((OPENSSL_API_COMPAT >> 20) & 0xFF) * 100 \
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+ ((OPENSSL_API_COMPAT >> 12) & 0xFF))
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# endif
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# endif
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/*
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* If OPENSSL_API_COMPAT wasn't given, we use default numbers to set
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* the API compatibility level.
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*/
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# ifndef OPENSSL_API_LEVEL
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# if OPENSSL_CONFIGURED_API > 0
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# define OPENSSL_API_LEVEL (OPENSSL_CONFIGURED_API)
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# else
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# define OPENSSL_API_LEVEL \
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(OPENSSL_VERSION_MAJOR * 10000 + OPENSSL_VERSION_MINOR * 100)
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# endif
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# endif
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# if OPENSSL_API_LEVEL > OPENSSL_CONFIGURED_API
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# error "The requested API level higher than the configured API compatibility level"
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# endif
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/*
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* Check of sane values.
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*/
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/* Can't go higher than the current version. */
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# if OPENSSL_API_LEVEL > (OPENSSL_VERSION_MAJOR * 10000 + OPENSSL_VERSION_MINOR * 100)
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# error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
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# endif
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/* OpenSSL will have no version 2.y.z */
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# if OPENSSL_API_LEVEL < 30000 && OPENSSL_API_LEVEL >= 20000
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# error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
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# endif
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/* Below 0.9.8 is unacceptably low */
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# if OPENSSL_API_LEVEL < 908
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# error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
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# endif
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/*
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* Define macros for deprecation and simulated removal purposes.
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*
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* The macros OSSL_DEPRECATED_{major}_{minor} are always defined for
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* all OpenSSL versions we care for. They can be used as attributes
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* in function declarations where appropriate.
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*
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* The macros OPENSSL_NO_DEPRECATED_{major}_{minor} are defined for
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* all OpenSSL versions up to or equal to the version given with
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* OPENSSL_API_COMPAT. They are used as guards around anything that's
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* deprecated up to that version, as an effect of the developer option
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* 'no-deprecated'.
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*/
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# undef OPENSSL_NO_DEPRECATED_3_0
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# undef OPENSSL_NO_DEPRECATED_1_1_1
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# undef OPENSSL_NO_DEPRECATED_1_1_0
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# undef OPENSSL_NO_DEPRECATED_1_0_2
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# undef OPENSSL_NO_DEPRECATED_1_0_1
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# undef OPENSSL_NO_DEPRECATED_1_0_0
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# undef OPENSSL_NO_DEPRECATED_0_9_8
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# if OPENSSL_API_LEVEL >= 30000
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# ifndef OPENSSL_NO_DEPRECATED
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# define OSSL_DEPRECATEDIN_3_0 OSSL_DEPRECATED(3.0)
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# define OSSL_DEPRECATEDIN_3_0_FOR(msg) OSSL_DEPRECATED_FOR(3.0, msg)
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# else
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# define OPENSSL_NO_DEPRECATED_3_0
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# endif
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# else
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# define OSSL_DEPRECATEDIN_3_0
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# define OSSL_DEPRECATEDIN_3_0_FOR(msg)
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# endif
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# if OPENSSL_API_LEVEL >= 10101
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# ifndef OPENSSL_NO_DEPRECATED
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# define OSSL_DEPRECATEDIN_1_1_1 OSSL_DEPRECATED(1.1.1)
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# define OSSL_DEPRECATEDIN_1_1_1_FOR(msg) OSSL_DEPRECATED_FOR(1.1.1, msg)
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# else
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# define OPENSSL_NO_DEPRECATED_1_1_1
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# endif
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# else
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# define OSSL_DEPRECATEDIN_1_1_1
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# define OSSL_DEPRECATEDIN_1_1_1_FOR(msg)
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# endif
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# if OPENSSL_API_LEVEL >= 10100
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# ifndef OPENSSL_NO_DEPRECATED
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# define OSSL_DEPRECATEDIN_1_1_0 OSSL_DEPRECATED(1.1.0)
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# define OSSL_DEPRECATEDIN_1_1_0_FOR(msg) OSSL_DEPRECATED_FOR(1.1.0, msg)
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# else
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# define OPENSSL_NO_DEPRECATED_1_1_0
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# endif
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# else
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# define OSSL_DEPRECATEDIN_1_1_0
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# define OSSL_DEPRECATEDIN_1_1_0_FOR(msg)
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# endif
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# if OPENSSL_API_LEVEL >= 10002
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# ifndef OPENSSL_NO_DEPRECATED
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# define OSSL_DEPRECATEDIN_1_0_2 OSSL_DEPRECATED(1.0.2)
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# define OSSL_DEPRECATEDIN_1_0_2_FOR(msg) OSSL_DEPRECATED_FOR(1.0.2, msg)
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# else
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# define OPENSSL_NO_DEPRECATED_1_0_2
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# endif
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# else
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# define OSSL_DEPRECATEDIN_1_0_2
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# define OSSL_DEPRECATEDIN_1_0_2_FOR(msg)
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# endif
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# if OPENSSL_API_LEVEL >= 10001
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# ifndef OPENSSL_NO_DEPRECATED
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# define OSSL_DEPRECATEDIN_1_0_1 OSSL_DEPRECATED(1.0.1)
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# define OSSL_DEPRECATEDIN_1_0_1_FOR(msg) OSSL_DEPRECATED_FOR(1.0.1, msg)
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# else
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# define OPENSSL_NO_DEPRECATED_1_0_1
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# endif
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# else
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# define OSSL_DEPRECATEDIN_1_0_1
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# define OSSL_DEPRECATEDIN_1_0_1_FOR(msg)
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# endif
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# if OPENSSL_API_LEVEL >= 10000
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# ifndef OPENSSL_NO_DEPRECATED
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# define OSSL_DEPRECATEDIN_1_0_0 OSSL_DEPRECATED(1.0.0)
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# define OSSL_DEPRECATEDIN_1_0_0_FOR(msg) OSSL_DEPRECATED_FOR(1.0.0, msg)
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# else
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# define OPENSSL_NO_DEPRECATED_1_0_0
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# endif
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# else
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# define OSSL_DEPRECATEDIN_1_0_0
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# define OSSL_DEPRECATEDIN_1_0_0_FOR(msg)
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# endif
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# if OPENSSL_API_LEVEL >= 908
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# ifndef OPENSSL_NO_DEPRECATED
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# define OSSL_DEPRECATEDIN_0_9_8 OSSL_DEPRECATED(0.9.8)
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# define OSSL_DEPRECATEDIN_0_9_8_FOR(msg) OSSL_DEPRECATED_FOR(0.9.8, msg)
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# else
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# define OPENSSL_NO_DEPRECATED_0_9_8
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# endif
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# else
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# define OSSL_DEPRECATEDIN_0_9_8
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# define OSSL_DEPRECATEDIN_0_9_8_FOR(msg)
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# endif
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/*
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* Make our own variants of __FILE__ and __LINE__, depending on configuration
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*/
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# ifndef OPENSSL_FILE
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# ifdef OPENSSL_NO_FILENAMES
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# define OPENSSL_FILE ""
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# define OPENSSL_LINE 0
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# else
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# define OPENSSL_FILE __FILE__
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# define OPENSSL_LINE __LINE__
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# endif
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# endif
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/*
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* __func__ was standardized in C99, so for any compiler that claims
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* to implement that language level or newer, we assume we can safely
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* use that symbol.
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*
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* GNU C also provides __FUNCTION__ since version 2, which predates
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* C99. We can, however, only use this if __STDC_VERSION__ exists,
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* as it's otherwise not allowed according to ISO C standards (C90).
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* (compiling with GNU C's -pedantic tells us so)
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*
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* If none of the above applies, we check if the compiler is MSVC,
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* and use __FUNCTION__ if that's the case.
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*/
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# ifndef OPENSSL_FUNC
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# if defined(__STDC_VERSION__)
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# if __STDC_VERSION__ >= 199901L
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# define OPENSSL_FUNC __func__
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# elif defined(__GNUC__) && __GNUC__ >= 2
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# define OPENSSL_FUNC __FUNCTION__
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# endif
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# elif defined(_MSC_VER)
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# define OPENSSL_FUNC __FUNCTION__
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# endif
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/*
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* If all these possibilities are exhausted, we give up and use a
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* static string.
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*/
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# ifndef OPENSSL_FUNC
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# define OPENSSL_FUNC "(unknown function)"
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# endif
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# endif
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#endif /* OPENSSL_MACROS_H */
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