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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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