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macros.h
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/* * Copyright 2019-2023 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 >= 30100 # ifndef OPENSSL_NO_DEPRECATED # define OSSL_DEPRECATEDIN_3_1 OSSL_DEPRECATED(3.1) # define OSSL_DEPRECATEDIN_3_1_FOR(msg) OSSL_DEPRECATED_FOR(3.1, msg) # else # define OPENSSL_NO_DEPRECATED_3_1 # endif # else # define OSSL_DEPRECATEDIN_3_1 # define OSSL_DEPRECATEDIN_3_1_FOR(msg) # endif # 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 # ifndef OSSL_CRYPTO_ALLOC # if defined(__GNUC__) # define OSSL_CRYPTO_ALLOC __attribute__((__malloc__)) # elif defined(_MSC_VER) # define OSSL_CRYPTO_ALLOC __declspec(restrict) # else # define OSSL_CRYPTO_ALLOC # endif # endif #endif /* OPENSSL_MACROS_H */