forked from eden-emu/eden
Move dead submodules in-tree
Signed-off-by: swurl <swurl@swurl.xyz>
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4081 changed files with 1185566 additions and 45 deletions
221
externals/mbedtls/include/mbedtls/platform_util.h
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externals/mbedtls/include/mbedtls/platform_util.h
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/**
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* \file platform_util.h
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*
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* \brief Common and shared functions used by multiple modules in the Mbed TLS
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* library.
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*/
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/*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
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*
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* This file is provided under the Apache License 2.0, or the
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* GNU General Public License v2.0 or later.
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*
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* **********
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* Apache License 2.0:
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* **********
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*
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* **********
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* GNU General Public License v2.0 or later:
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* **********
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*/
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#ifndef MBEDTLS_PLATFORM_UTIL_H
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#define MBEDTLS_PLATFORM_UTIL_H
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#include <stddef.h>
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#if defined(MBEDTLS_HAVE_TIME_DATE)
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#include "platform_time.h"
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#include <time.h>
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#endif /* MBEDTLS_HAVE_TIME_DATE */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(MBEDTLS_CHECK_PARAMS)
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#if defined(MBEDTLS_CHECK_PARAMS_ASSERT)
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/* Allow the user to define MBEDTLS_PARAM_FAILED to something like assert
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* (which is what our config.h suggests). */
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#include <assert.h>
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#endif /* MBEDTLS_CHECK_PARAMS_ASSERT */
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#if defined(MBEDTLS_PARAM_FAILED)
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/** An alternative definition of MBEDTLS_PARAM_FAILED has been set in config.h.
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*
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* This flag can be used to check whether it is safe to assume that
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* MBEDTLS_PARAM_FAILED() will expand to a call to mbedtls_param_failed().
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*/
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#define MBEDTLS_PARAM_FAILED_ALT
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#elif defined(MBEDTLS_CHECK_PARAMS_ASSERT)
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#define MBEDTLS_PARAM_FAILED( cond ) assert( cond )
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#define MBEDTLS_PARAM_FAILED_ALT
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#else /* MBEDTLS_PARAM_FAILED */
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#define MBEDTLS_PARAM_FAILED( cond ) \
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mbedtls_param_failed( #cond, __FILE__, __LINE__ )
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/**
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* \brief User supplied callback function for parameter validation failure.
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* See #MBEDTLS_CHECK_PARAMS for context.
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*
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* This function will be called unless an alternative treatement
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* is defined through the #MBEDTLS_PARAM_FAILED macro.
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*
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* This function can return, and the operation will be aborted, or
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* alternatively, through use of setjmp()/longjmp() can resume
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* execution in the application code.
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*
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* \param failure_condition The assertion that didn't hold.
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* \param file The file where the assertion failed.
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* \param line The line in the file where the assertion failed.
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*/
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void mbedtls_param_failed( const char *failure_condition,
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const char *file,
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int line );
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#endif /* MBEDTLS_PARAM_FAILED */
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/* Internal macro meant to be called only from within the library. */
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#define MBEDTLS_INTERNAL_VALIDATE_RET( cond, ret ) \
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do { \
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if( !(cond) ) \
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{ \
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MBEDTLS_PARAM_FAILED( cond ); \
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return( ret ); \
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} \
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} while( 0 )
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/* Internal macro meant to be called only from within the library. */
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#define MBEDTLS_INTERNAL_VALIDATE( cond ) \
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do { \
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if( !(cond) ) \
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{ \
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MBEDTLS_PARAM_FAILED( cond ); \
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return; \
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} \
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} while( 0 )
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#else /* MBEDTLS_CHECK_PARAMS */
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/* Internal macros meant to be called only from within the library. */
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#define MBEDTLS_INTERNAL_VALIDATE_RET( cond, ret ) do { } while( 0 )
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#define MBEDTLS_INTERNAL_VALIDATE( cond ) do { } while( 0 )
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#endif /* MBEDTLS_CHECK_PARAMS */
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/* Internal helper macros for deprecating API constants. */
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#if !defined(MBEDTLS_DEPRECATED_REMOVED)
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#if defined(MBEDTLS_DEPRECATED_WARNING)
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/* Deliberately don't (yet) export MBEDTLS_DEPRECATED here
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* to avoid conflict with other headers which define and use
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* it, too. We might want to move all these definitions here at
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* some point for uniformity. */
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#define MBEDTLS_DEPRECATED __attribute__((deprecated))
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MBEDTLS_DEPRECATED typedef char const * mbedtls_deprecated_string_constant_t;
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#define MBEDTLS_DEPRECATED_STRING_CONSTANT( VAL ) \
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( (mbedtls_deprecated_string_constant_t) ( VAL ) )
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MBEDTLS_DEPRECATED typedef int mbedtls_deprecated_numeric_constant_t;
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#define MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( VAL ) \
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( (mbedtls_deprecated_numeric_constant_t) ( VAL ) )
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#undef MBEDTLS_DEPRECATED
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#else /* MBEDTLS_DEPRECATED_WARNING */
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#define MBEDTLS_DEPRECATED_STRING_CONSTANT( VAL ) VAL
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#define MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( VAL ) VAL
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#endif /* MBEDTLS_DEPRECATED_WARNING */
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#endif /* MBEDTLS_DEPRECATED_REMOVED */
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/**
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* \brief Securely zeroize a buffer
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*
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* The function is meant to wipe the data contained in a buffer so
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* that it can no longer be recovered even if the program memory
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* is later compromised. Call this function on sensitive data
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* stored on the stack before returning from a function, and on
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* sensitive data stored on the heap before freeing the heap
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* object.
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*
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* It is extremely difficult to guarantee that calls to
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* mbedtls_platform_zeroize() are not removed by aggressive
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* compiler optimizations in a portable way. For this reason, Mbed
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* TLS provides the configuration option
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* MBEDTLS_PLATFORM_ZEROIZE_ALT, which allows users to configure
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* mbedtls_platform_zeroize() to use a suitable implementation for
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* their platform and needs
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*
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* \param buf Buffer to be zeroized
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* \param len Length of the buffer in bytes
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*
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*/
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void mbedtls_platform_zeroize( void *buf, size_t len );
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#if defined(MBEDTLS_HAVE_TIME_DATE)
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/**
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* \brief Platform-specific implementation of gmtime_r()
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*
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* The function is a thread-safe abstraction that behaves
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* similarly to the gmtime_r() function from Unix/POSIX.
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*
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* Mbed TLS will try to identify the underlying platform and
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* make use of an appropriate underlying implementation (e.g.
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* gmtime_r() for POSIX and gmtime_s() for Windows). If this is
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* not possible, then gmtime() will be used. In this case, calls
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* from the library to gmtime() will be guarded by the mutex
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* mbedtls_threading_gmtime_mutex if MBEDTLS_THREADING_C is
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* enabled. It is recommended that calls from outside the library
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* are also guarded by this mutex.
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*
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* If MBEDTLS_PLATFORM_GMTIME_R_ALT is defined, then Mbed TLS will
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* unconditionally use the alternative implementation for
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* mbedtls_platform_gmtime_r() supplied by the user at compile time.
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*
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* \param tt Pointer to an object containing time (in seconds) since the
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* epoch to be converted
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* \param tm_buf Pointer to an object where the results will be stored
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*
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* \return Pointer to an object of type struct tm on success, otherwise
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* NULL
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*/
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struct tm *mbedtls_platform_gmtime_r( const mbedtls_time_t *tt,
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struct tm *tm_buf );
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#endif /* MBEDTLS_HAVE_TIME_DATE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* MBEDTLS_PLATFORM_UTIL_H */
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