167 lines
5.0 KiB
C
167 lines
5.0 KiB
C
/*
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* Copyright 2019 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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#include <openssl/opensslconf.h>
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#ifndef OPENSSL_MACROS_H
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# define OPENSSL_MACROS_H
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/*
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* Sometimes OPENSSSL_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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* 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_API_MIN above 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. For version numbers 3.0.0 and
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* on, <version> is expected to be only the major version number (i.e. 3 for
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* version 3.0.0).
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*/
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# ifndef DECLARE_DEPRECATED
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# define DECLARE_DEPRECATED(f) f;
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# ifdef __GNUC__
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# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0)
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# undef DECLARE_DEPRECATED
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# define DECLARE_DEPRECATED(f) f __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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# undef DECLARE_DEPRECATED
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# define DECLARE_DEPRECATED(f) f __attribute__ ((deprecated));
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# endif
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# endif
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# endif
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/*
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* We convert the OPENSSL_API_COMPAT value to an API level. The API level
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* is the major version number for 3.0.0 and on. For earlier versions, it
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* uses this scheme, which is close enough for our purposes:
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*
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* 0.x.y 0 (0.9.8 was the last release in this series)
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* 1.0.x 1 (1.0.2 was the last release in this series)
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* 1.1.x 2 (1.1.1 was the last release in this series)
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*/
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/* In case someone defined both */
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# if defined(OPENSSL_API_COMPAT) && defined(OPENSSL_API_LEVEL)
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# error "Disallowed to define both OPENSSL_API_COMPAT and OPENSSL_API_LEVEL"
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# endif
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# ifndef OPENSSL_API_COMPAT
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# define OPENSSL_API_LEVEL OPENSSL_MIN_API
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# else
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# if (OPENSSL_API_COMPAT < 0x1000L) /* Major version numbers up to 16777215 */
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# define OPENSSL_API_LEVEL OPENSSL_API_COMPAT
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# elif (OPENSSL_API_COMPAT & 0xF0000000L) == 0x00000000L
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# define OPENSSL_API_LEVEL 0
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# elif (OPENSSL_API_COMPAT & 0xFFF00000L) == 0x10000000L
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# define OPENSSL_API_LEVEL 1
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# elif (OPENSSL_API_COMPAT & 0xFFF00000L) == 0x10100000L
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# define OPENSSL_API_LEVEL 2
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# else
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/* Major number 3 to 15 */
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# define OPENSSL_API_LEVEL ((OPENSSL_API_COMPAT >> 28) & 0xF)
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# endif
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# endif
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/*
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* Define API level check macros up to what makes sense. Since we
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* do future deprecations, we define one API level beyond the current
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* major version number.
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*/
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# if OPENSSL_API_LEVEL < 4
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# define DEPRECATEDIN_4(f) DECLARE_DEPRECATED(f)
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# define OPENSSL_API_4 0
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# else
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# define DEPRECATEDIN_4(f)
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# define OPENSSL_API_4 1
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# endif
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# if OPENSSL_API_LEVEL < 3
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# define DEPRECATEDIN_3(f) DECLARE_DEPRECATED(f)
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# define OPENSSL_API_3 0
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# else
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# define DEPRECATEDIN_3(f)
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# define OPENSSL_API_3 1
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# endif
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# if OPENSSL_API_LEVEL < 2
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# define DEPRECATEDIN_1_1_0(f) DECLARE_DEPRECATED(f)
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# define OPENSSL_API_1_1_0 0
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# else
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# define DEPRECATEDIN_1_1_0(f)
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# define OPENSSL_API_1_1_0 1
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# endif
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# if OPENSSL_API_LEVEL < 1
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# define DEPRECATEDIN_1_0_0(f) DECLARE_DEPRECATED(f)
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# define OPENSSL_API_1_0_0 0
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# else
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# define DEPRECATEDIN_1_0_0(f)
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# define OPENSSL_API_1_0_0 1
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# endif
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# if OPENSSL_API_LEVEL < 0
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# define DEPRECATEDIN_0_9_8(f) DECLARE_DEPRECATED(f)
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# define OPENSSL_API_0_9_8 0
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# else
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# define DEPRECATEDIN_0_9_8(f)
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# define OPENSSL_API_0_9_8 1
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# endif
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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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