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openssl/include/openssl/macros.h

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/*
* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef OPENSSL_MACROS_H
# define OPENSSL_MACROS_H
# pragma once
#include <openssl/opensslconf.h>
#include <openssl/opensslv.h>
/* Helper macros for CPP string composition */
# define OPENSSL_MSTR_HELPER(x) #x
# define OPENSSL_MSTR(x) OPENSSL_MSTR_HELPER(x)
/*
* Sometimes OPENSSL_NO_xxx ends up with an empty file and some compilers
* don't like that. This will hopefully silence them.
*/
# define NON_EMPTY_TRANSLATION_UNIT static void *dummy = &dummy;
/*
* Generic deprecation macro
*
* If OPENSSL_SUPPRESS_DEPRECATED is defined, then OSSL_DEPRECATED and
* OSSL_DEPRECATED_FOR become no-ops
*/
# ifndef OSSL_DEPRECATED
# undef OSSL_DEPRECATED_FOR
# ifndef OPENSSL_SUPPRESS_DEPRECATED
# if defined(_MSC_VER)
/*
* MSVC supports __declspec(deprecated) since MSVC 2003 (13.10),
* and __declspec(deprecated(message)) since MSVC 2005 (14.00)
*/
# if _MSC_VER >= 1400
# define OSSL_DEPRECATED(since) \
__declspec(deprecated("Since OpenSSL " # since))
# define OSSL_DEPRECATED_FOR(since, message) \
__declspec(deprecated("Since OpenSSL " # since ";" message))
# elif _MSC_VER >= 1310
# define OSSL_DEPRECATED(since) __declspec(deprecated)
# define OSSL_DEPRECATED_FOR(since, message) __declspec(deprecated)
# endif
# elif defined(__GNUC__)
/*
* According to GCC documentation, deprecations with message appeared in
* GCC 4.5.0
*/
# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
# define OSSL_DEPRECATED(since) \
__attribute__((deprecated("Since OpenSSL " # since)))
# define OSSL_DEPRECATED_FOR(since, message) \
__attribute__((deprecated("Since OpenSSL " # since ";" message)))
# elif __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0)
# define OSSL_DEPRECATED(since) __attribute__((deprecated))
# define OSSL_DEPRECATED_FOR(since, message) __attribute__((deprecated))
# endif
# elif defined(__SUNPRO_C)
# if (__SUNPRO_C >= 0x5130)
# define OSSL_DEPRECATED(since) __attribute__ ((deprecated))
# define OSSL_DEPRECATED_FOR(since, message) __attribute__ ((deprecated))
# endif
# endif
# endif
# endif
/*
* Still not defined? Then define no-op macros. This means these macros
* are unsuitable for use in a typedef.
*/
# ifndef OSSL_DEPRECATED
# define OSSL_DEPRECATED(since) extern
# define OSSL_DEPRECATED_FOR(since, message) extern
# endif
/*
* Applications should use -DOPENSSL_API_COMPAT=<version> to suppress the
* declarations of functions deprecated in or before <version>. If this is
* undefined, the value of the macro OPENSSL_CONFIGURED_API (defined in
* <openssl/opensslconf.h>) is the default.
*
* For any version number up until version 1.1.x, <version> is expected to be
* the calculated version number 0xMNNFFPPSL.
* For version numbers 3.0 and on, <version> is expected to be a computation
* of the major and minor numbers in decimal using this formula:
*
* MAJOR * 10000 + MINOR * 100
*
* So version 3.0 becomes 30000, version 3.2 becomes 30200, etc.
*/
/*
* We use the OPENSSL_API_COMPAT value to define API level macros. These
* macros are used to enable or disable features at that API version boundary.
*/
# ifdef OPENSSL_API_LEVEL
# error "OPENSSL_API_LEVEL must not be defined by application"
# endif
/*
* We figure out what API level was intended by simple numeric comparison.
* The lowest old style number we recognise is 0x00908000L, so we take some
* safety margin and assume that anything below 0x00900000L is a new style
* number. This allows new versions up to and including v943.71.83.
*/
# ifdef OPENSSL_API_COMPAT
# if OPENSSL_API_COMPAT < 0x900000L
# define OPENSSL_API_LEVEL (OPENSSL_API_COMPAT)
# else
# define OPENSSL_API_LEVEL \
(((OPENSSL_API_COMPAT >> 28) & 0xF) * 10000 \
+ ((OPENSSL_API_COMPAT >> 20) & 0xFF) * 100 \
+ ((OPENSSL_API_COMPAT >> 12) & 0xFF))
# endif
# endif
/*
* If OPENSSL_API_COMPAT wasn't given, we use default numbers to set
* the API compatibility level.
*/
# ifndef OPENSSL_API_LEVEL
# if OPENSSL_CONFIGURED_API > 0
# define OPENSSL_API_LEVEL (OPENSSL_CONFIGURED_API)
# else
# define OPENSSL_API_LEVEL \
(OPENSSL_VERSION_MAJOR * 10000 + OPENSSL_VERSION_MINOR * 100)
# endif
# endif
# if OPENSSL_API_LEVEL > OPENSSL_CONFIGURED_API
# error "The requested API level higher than the configured API compatibility level"
# endif
/*
* Check of sane values.
*/
/* Can't go higher than the current version. */
# if OPENSSL_API_LEVEL > (OPENSSL_VERSION_MAJOR * 10000 + OPENSSL_VERSION_MINOR * 100)
# error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
# endif
/* OpenSSL will have no version 2.y.z */
# if OPENSSL_API_LEVEL < 30000 && OPENSSL_API_LEVEL >= 20000
# error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
# endif
/* Below 0.9.8 is unacceptably low */
# if OPENSSL_API_LEVEL < 908
# error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
# endif
/*
* Define macros for deprecation and simulated removal purposes.
*
* The macros OSSL_DEPRECATED_{major}_{minor} are always defined for
* all OpenSSL versions we care for. They can be used as attributes
* in function declarations where appropriate.
*
* The macros OPENSSL_NO_DEPRECATED_{major}_{minor} are defined for
* all OpenSSL versions up to or equal to the version given with
* OPENSSL_API_COMPAT. They are used as guards around anything that's
* deprecated up to that version, as an effect of the developer option
* 'no-deprecated'.
*/
# undef OPENSSL_NO_DEPRECATED_3_0
# undef OPENSSL_NO_DEPRECATED_1_1_1
# undef OPENSSL_NO_DEPRECATED_1_1_0
# undef OPENSSL_NO_DEPRECATED_1_0_2
# undef OPENSSL_NO_DEPRECATED_1_0_1
# undef OPENSSL_NO_DEPRECATED_1_0_0
# undef OPENSSL_NO_DEPRECATED_0_9_8
# if OPENSSL_API_LEVEL >= 30000
# ifndef OPENSSL_NO_DEPRECATED
# define OSSL_DEPRECATEDIN_3_0 OSSL_DEPRECATED(3.0)
# define OSSL_DEPRECATEDIN_3_0_FOR(msg) OSSL_DEPRECATED_FOR(3.0, msg)
# else
# define OPENSSL_NO_DEPRECATED_3_0
# endif
# else
# define OSSL_DEPRECATEDIN_3_0
# define OSSL_DEPRECATEDIN_3_0_FOR(msg)
# endif
# if OPENSSL_API_LEVEL >= 10101
# ifndef OPENSSL_NO_DEPRECATED
# define OSSL_DEPRECATEDIN_1_1_1 OSSL_DEPRECATED(1.1.1)
# define OSSL_DEPRECATEDIN_1_1_1_FOR(msg) OSSL_DEPRECATED_FOR(1.1.1, msg)
# else
# define OPENSSL_NO_DEPRECATED_1_1_1
# endif
# else
# define OSSL_DEPRECATEDIN_1_1_1
# define OSSL_DEPRECATEDIN_1_1_1_FOR(msg)
# endif
# if OPENSSL_API_LEVEL >= 10100
# ifndef OPENSSL_NO_DEPRECATED
# define OSSL_DEPRECATEDIN_1_1_0 OSSL_DEPRECATED(1.1.0)
# define OSSL_DEPRECATEDIN_1_1_0_FOR(msg) OSSL_DEPRECATED_FOR(1.1.0, msg)
# else
# define OPENSSL_NO_DEPRECATED_1_1_0
# endif
# else
# define OSSL_DEPRECATEDIN_1_1_0
# define OSSL_DEPRECATEDIN_1_1_0_FOR(msg)
# endif
# if OPENSSL_API_LEVEL >= 10002
# ifndef OPENSSL_NO_DEPRECATED
# define OSSL_DEPRECATEDIN_1_0_2 OSSL_DEPRECATED(1.0.2)
# define OSSL_DEPRECATEDIN_1_0_2_FOR(msg) OSSL_DEPRECATED_FOR(1.0.2, msg)
# else
# define OPENSSL_NO_DEPRECATED_1_0_2
# endif
# else
# define OSSL_DEPRECATEDIN_1_0_2
# define OSSL_DEPRECATEDIN_1_0_2_FOR(msg)
# endif
# if OPENSSL_API_LEVEL >= 10001
# ifndef OPENSSL_NO_DEPRECATED
# define OSSL_DEPRECATEDIN_1_0_1 OSSL_DEPRECATED(1.0.1)
# define OSSL_DEPRECATEDIN_1_0_1_FOR(msg) OSSL_DEPRECATED_FOR(1.0.1, msg)
# else
# define OPENSSL_NO_DEPRECATED_1_0_1
# endif
# else
# define OSSL_DEPRECATEDIN_1_0_1
# define OSSL_DEPRECATEDIN_1_0_1_FOR(msg)
# endif
# if OPENSSL_API_LEVEL >= 10000
# ifndef OPENSSL_NO_DEPRECATED
# define OSSL_DEPRECATEDIN_1_0_0 OSSL_DEPRECATED(1.0.0)
# define OSSL_DEPRECATEDIN_1_0_0_FOR(msg) OSSL_DEPRECATED_FOR(1.0.0, msg)
# else
# define OPENSSL_NO_DEPRECATED_1_0_0
# endif
# else
# define OSSL_DEPRECATEDIN_1_0_0
# define OSSL_DEPRECATEDIN_1_0_0_FOR(msg)
# endif
# if OPENSSL_API_LEVEL >= 908
# ifndef OPENSSL_NO_DEPRECATED
# define OSSL_DEPRECATEDIN_0_9_8 OSSL_DEPRECATED(0.9.8)
# define OSSL_DEPRECATEDIN_0_9_8_FOR(msg) OSSL_DEPRECATED_FOR(0.9.8, msg)
# else
# define OPENSSL_NO_DEPRECATED_0_9_8
# endif
# else
# define OSSL_DEPRECATEDIN_0_9_8
# define OSSL_DEPRECATEDIN_0_9_8_FOR(msg)
# endif
/*
* Make our own variants of __FILE__ and __LINE__, depending on configuration
*/
# ifndef OPENSSL_FILE
# ifdef OPENSSL_NO_FILENAMES
# define OPENSSL_FILE ""
# define OPENSSL_LINE 0
# else
# define OPENSSL_FILE __FILE__
# define OPENSSL_LINE __LINE__
# endif
# endif
/*
* __func__ was standardized in C99, so for any compiler that claims
* to implement that language level or newer, we assume we can safely
* use that symbol.
*
* GNU C also provides __FUNCTION__ since version 2, which predates
* C99. We can, however, only use this if __STDC_VERSION__ exists,
* as it's otherwise not allowed according to ISO C standards (C90).
* (compiling with GNU C's -pedantic tells us so)
*
* If none of the above applies, we check if the compiler is MSVC,
* and use __FUNCTION__ if that's the case.
*/
# ifndef OPENSSL_FUNC
# if defined(__STDC_VERSION__)
# if __STDC_VERSION__ >= 199901L
# define OPENSSL_FUNC __func__
# elif defined(__GNUC__) && __GNUC__ >= 2
# define OPENSSL_FUNC __FUNCTION__
# endif
# elif defined(_MSC_VER)
# define OPENSSL_FUNC __FUNCTION__
# endif
/*
* If all these possibilities are exhausted, we give up and use a
* static string.
*/
# ifndef OPENSSL_FUNC
# define OPENSSL_FUNC "(unknown function)"
# endif
# endif
#endif /* OPENSSL_MACROS_H */
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