mirror of
https://gitee.com/acl-dev/acl.git
synced 2024-12-14 17:00:52 +08:00
351 lines
12 KiB
C
351 lines
12 KiB
C
/**
|
|
* \file platform.h
|
|
*
|
|
* \brief The Mbed TLS platform abstraction layer.
|
|
*/
|
|
/*
|
|
* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
|
|
* SPDX-License-Identifier: GPL-2.0
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* This file is part of Mbed TLS (https://tls.mbed.org)
|
|
*/
|
|
#ifndef MBEDTLS_PLATFORM_H
|
|
#define MBEDTLS_PLATFORM_H
|
|
|
|
#if !defined(MBEDTLS_CONFIG_FILE)
|
|
#include "config.h"
|
|
#else
|
|
#include MBEDTLS_CONFIG_FILE
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_HAVE_TIME)
|
|
#include "platform_time.h"
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* \name SECTION: Module settings
|
|
*
|
|
* The configuration options you can set for this module are in this section.
|
|
* Either change them in config.h or define them on the compiler command line.
|
|
* \{
|
|
*/
|
|
|
|
#if !defined(MBEDTLS_PLATFORM_NO_STD_FUNCTIONS)
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#if !defined(MBEDTLS_PLATFORM_STD_SNPRINTF)
|
|
#if defined(_WIN32)
|
|
#define MBEDTLS_PLATFORM_STD_SNPRINTF mbedtls_platform_win32_snprintf /**< The default \c snprintf function to use. */
|
|
#else
|
|
#define MBEDTLS_PLATFORM_STD_SNPRINTF snprintf /**< The default \c snprintf function to use. */
|
|
#endif
|
|
#endif
|
|
#if !defined(MBEDTLS_PLATFORM_STD_PRINTF)
|
|
#define MBEDTLS_PLATFORM_STD_PRINTF printf /**< The default \c printf function to use. */
|
|
#endif
|
|
#if !defined(MBEDTLS_PLATFORM_STD_FPRINTF)
|
|
#define MBEDTLS_PLATFORM_STD_FPRINTF fprintf /**< The default \c fprintf function to use. */
|
|
#endif
|
|
#if !defined(MBEDTLS_PLATFORM_STD_CALLOC)
|
|
#define MBEDTLS_PLATFORM_STD_CALLOC calloc /**< The default \c calloc function to use. */
|
|
#endif
|
|
#if !defined(MBEDTLS_PLATFORM_STD_FREE)
|
|
#define MBEDTLS_PLATFORM_STD_FREE free /**< The default \c free function to use. */
|
|
#endif
|
|
#if !defined(MBEDTLS_PLATFORM_STD_EXIT)
|
|
#define MBEDTLS_PLATFORM_STD_EXIT exit /**< The default \c exit function to use. */
|
|
#endif
|
|
#if !defined(MBEDTLS_PLATFORM_STD_TIME)
|
|
#define MBEDTLS_PLATFORM_STD_TIME time /**< The default \c time function to use. */
|
|
#endif
|
|
#if !defined(MBEDTLS_PLATFORM_STD_EXIT_SUCCESS)
|
|
#define MBEDTLS_PLATFORM_STD_EXIT_SUCCESS EXIT_SUCCESS /**< The default exit value to use. */
|
|
#endif
|
|
#if !defined(MBEDTLS_PLATFORM_STD_EXIT_FAILURE)
|
|
#define MBEDTLS_PLATFORM_STD_EXIT_FAILURE EXIT_FAILURE /**< The default exit value to use. */
|
|
#endif
|
|
#if defined(MBEDTLS_FS_IO)
|
|
#if !defined(MBEDTLS_PLATFORM_STD_NV_SEED_READ)
|
|
#define MBEDTLS_PLATFORM_STD_NV_SEED_READ mbedtls_platform_std_nv_seed_read
|
|
#endif
|
|
#if !defined(MBEDTLS_PLATFORM_STD_NV_SEED_WRITE)
|
|
#define MBEDTLS_PLATFORM_STD_NV_SEED_WRITE mbedtls_platform_std_nv_seed_write
|
|
#endif
|
|
#if !defined(MBEDTLS_PLATFORM_STD_NV_SEED_FILE)
|
|
#define MBEDTLS_PLATFORM_STD_NV_SEED_FILE "seedfile"
|
|
#endif
|
|
#endif /* MBEDTLS_FS_IO */
|
|
#else /* MBEDTLS_PLATFORM_NO_STD_FUNCTIONS */
|
|
#if defined(MBEDTLS_PLATFORM_STD_MEM_HDR)
|
|
#include MBEDTLS_PLATFORM_STD_MEM_HDR
|
|
#endif
|
|
#endif /* MBEDTLS_PLATFORM_NO_STD_FUNCTIONS */
|
|
|
|
|
|
/* \} name SECTION: Module settings */
|
|
|
|
/*
|
|
* The function pointers for calloc and free
|
|
*/
|
|
#if defined(MBEDTLS_PLATFORM_MEMORY)
|
|
#if defined(MBEDTLS_PLATFORM_FREE_MACRO) && \
|
|
defined(MBEDTLS_PLATFORM_CALLOC_MACRO)
|
|
#define mbedtls_free MBEDTLS_PLATFORM_FREE_MACRO
|
|
#define mbedtls_calloc MBEDTLS_PLATFORM_CALLOC_MACRO
|
|
#else
|
|
/* For size_t */
|
|
#include <stddef.h>
|
|
extern void * (*mbedtls_calloc)( size_t n, size_t size );
|
|
extern void (*mbedtls_free)( void *ptr );
|
|
|
|
/**
|
|
* \brief This function allows configuring custom memory-management functions.
|
|
*
|
|
* \param calloc_func The \c calloc function implementation.
|
|
* \param free_func The \c free function implementation.
|
|
*
|
|
* \return \c 0.
|
|
*/
|
|
int mbedtls_platform_set_calloc_free( void * (*calloc_func)( size_t, size_t ),
|
|
void (*free_func)( void * ) );
|
|
#endif /* MBEDTLS_PLATFORM_FREE_MACRO && MBEDTLS_PLATFORM_CALLOC_MACRO */
|
|
#else /* !MBEDTLS_PLATFORM_MEMORY */
|
|
#define mbedtls_free free
|
|
#define mbedtls_calloc calloc
|
|
#endif /* MBEDTLS_PLATFORM_MEMORY && !MBEDTLS_PLATFORM_{FREE,CALLOC}_MACRO */
|
|
|
|
/*
|
|
* The function pointers for fprintf
|
|
*/
|
|
#if defined(MBEDTLS_PLATFORM_FPRINTF_ALT)
|
|
/* We need FILE * */
|
|
#include <stdio.h>
|
|
extern int (*mbedtls_fprintf)( FILE *stream, const char *format, ... );
|
|
|
|
/**
|
|
* \brief This function allows configuring a custom \p fprintf function pointer.
|
|
*
|
|
* \param fprintf_func The \c fprintf function implementation.
|
|
*
|
|
* \return \c 0.
|
|
*/
|
|
int mbedtls_platform_set_fprintf( int (*fprintf_func)( FILE *stream, const char *,
|
|
... ) );
|
|
#else
|
|
#if defined(MBEDTLS_PLATFORM_FPRINTF_MACRO)
|
|
#define mbedtls_fprintf MBEDTLS_PLATFORM_FPRINTF_MACRO
|
|
#else
|
|
#define mbedtls_fprintf fprintf
|
|
#endif /* MBEDTLS_PLATFORM_FPRINTF_MACRO */
|
|
#endif /* MBEDTLS_PLATFORM_FPRINTF_ALT */
|
|
|
|
/*
|
|
* The function pointers for printf
|
|
*/
|
|
#if defined(MBEDTLS_PLATFORM_PRINTF_ALT)
|
|
extern int (*mbedtls_printf)( const char *format, ... );
|
|
|
|
/**
|
|
* \brief This function allows configuring a custom \c printf function
|
|
* pointer.
|
|
*
|
|
* \param printf_func The \c printf function implementation.
|
|
*
|
|
* \return \c 0 on success.
|
|
*/
|
|
int mbedtls_platform_set_printf( int (*printf_func)( const char *, ... ) );
|
|
#else /* !MBEDTLS_PLATFORM_PRINTF_ALT */
|
|
#if defined(MBEDTLS_PLATFORM_PRINTF_MACRO)
|
|
#define mbedtls_printf MBEDTLS_PLATFORM_PRINTF_MACRO
|
|
#else
|
|
#define mbedtls_printf printf
|
|
#endif /* MBEDTLS_PLATFORM_PRINTF_MACRO */
|
|
#endif /* MBEDTLS_PLATFORM_PRINTF_ALT */
|
|
|
|
/*
|
|
* The function pointers for snprintf
|
|
*
|
|
* The snprintf implementation should conform to C99:
|
|
* - it *must* always correctly zero-terminate the buffer
|
|
* (except when n == 0, then it must leave the buffer untouched)
|
|
* - however it is acceptable to return -1 instead of the required length when
|
|
* the destination buffer is too short.
|
|
*/
|
|
#if defined(_WIN32)
|
|
/* For Windows (inc. MSYS2), we provide our own fixed implementation */
|
|
int mbedtls_platform_win32_snprintf( char *s, size_t n, const char *fmt, ... );
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_PLATFORM_SNPRINTF_ALT)
|
|
extern int (*mbedtls_snprintf)( char * s, size_t n, const char * format, ... );
|
|
|
|
/**
|
|
* \brief This function allows configuring a custom \c snprintf function
|
|
* pointer.
|
|
*
|
|
* \param snprintf_func The \c snprintf function implementation.
|
|
*
|
|
* \return \c 0 on success.
|
|
*/
|
|
int mbedtls_platform_set_snprintf( int (*snprintf_func)( char * s, size_t n,
|
|
const char * format, ... ) );
|
|
#else /* MBEDTLS_PLATFORM_SNPRINTF_ALT */
|
|
#if defined(MBEDTLS_PLATFORM_SNPRINTF_MACRO)
|
|
#define mbedtls_snprintf MBEDTLS_PLATFORM_SNPRINTF_MACRO
|
|
#else
|
|
#define mbedtls_snprintf MBEDTLS_PLATFORM_STD_SNPRINTF
|
|
#endif /* MBEDTLS_PLATFORM_SNPRINTF_MACRO */
|
|
#endif /* MBEDTLS_PLATFORM_SNPRINTF_ALT */
|
|
|
|
/*
|
|
* The function pointers for exit
|
|
*/
|
|
#if defined(MBEDTLS_PLATFORM_EXIT_ALT)
|
|
extern void (*mbedtls_exit)( int status );
|
|
|
|
/**
|
|
* \brief This function allows configuring a custom \c exit function
|
|
* pointer.
|
|
*
|
|
* \param exit_func The \c exit function implementation.
|
|
*
|
|
* \return \c 0 on success.
|
|
*/
|
|
int mbedtls_platform_set_exit( void (*exit_func)( int status ) );
|
|
#else
|
|
#if defined(MBEDTLS_PLATFORM_EXIT_MACRO)
|
|
#define mbedtls_exit MBEDTLS_PLATFORM_EXIT_MACRO
|
|
#else
|
|
#define mbedtls_exit exit
|
|
#endif /* MBEDTLS_PLATFORM_EXIT_MACRO */
|
|
#endif /* MBEDTLS_PLATFORM_EXIT_ALT */
|
|
|
|
/*
|
|
* The default exit values
|
|
*/
|
|
#if defined(MBEDTLS_PLATFORM_STD_EXIT_SUCCESS)
|
|
#define MBEDTLS_EXIT_SUCCESS MBEDTLS_PLATFORM_STD_EXIT_SUCCESS
|
|
#else
|
|
#define MBEDTLS_EXIT_SUCCESS 0
|
|
#endif
|
|
#if defined(MBEDTLS_PLATFORM_STD_EXIT_FAILURE)
|
|
#define MBEDTLS_EXIT_FAILURE MBEDTLS_PLATFORM_STD_EXIT_FAILURE
|
|
#else
|
|
#define MBEDTLS_EXIT_FAILURE 1
|
|
#endif
|
|
|
|
/*
|
|
* The function pointers for reading from and writing a seed file to
|
|
* Non-Volatile storage (NV) in a platform-independent way
|
|
*
|
|
* Only enabled when the NV seed entropy source is enabled
|
|
*/
|
|
#if defined(MBEDTLS_ENTROPY_NV_SEED)
|
|
#if !defined(MBEDTLS_PLATFORM_NO_STD_FUNCTIONS) && defined(MBEDTLS_FS_IO)
|
|
/* Internal standard platform definitions */
|
|
int mbedtls_platform_std_nv_seed_read( unsigned char *buf, size_t buf_len );
|
|
int mbedtls_platform_std_nv_seed_write( unsigned char *buf, size_t buf_len );
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_PLATFORM_NV_SEED_ALT)
|
|
extern int (*mbedtls_nv_seed_read)( unsigned char *buf, size_t buf_len );
|
|
extern int (*mbedtls_nv_seed_write)( unsigned char *buf, size_t buf_len );
|
|
|
|
/**
|
|
* \brief This function allows configuring custom seed file writing and
|
|
* reading functions.
|
|
*
|
|
* \param nv_seed_read_func The seed reading function implementation.
|
|
* \param nv_seed_write_func The seed writing function implementation.
|
|
*
|
|
* \return \c 0 on success.
|
|
*/
|
|
int mbedtls_platform_set_nv_seed(
|
|
int (*nv_seed_read_func)( unsigned char *buf, size_t buf_len ),
|
|
int (*nv_seed_write_func)( unsigned char *buf, size_t buf_len )
|
|
);
|
|
#else
|
|
#if defined(MBEDTLS_PLATFORM_NV_SEED_READ_MACRO) && \
|
|
defined(MBEDTLS_PLATFORM_NV_SEED_WRITE_MACRO)
|
|
#define mbedtls_nv_seed_read MBEDTLS_PLATFORM_NV_SEED_READ_MACRO
|
|
#define mbedtls_nv_seed_write MBEDTLS_PLATFORM_NV_SEED_WRITE_MACRO
|
|
#else
|
|
#define mbedtls_nv_seed_read mbedtls_platform_std_nv_seed_read
|
|
#define mbedtls_nv_seed_write mbedtls_platform_std_nv_seed_write
|
|
#endif
|
|
#endif /* MBEDTLS_PLATFORM_NV_SEED_ALT */
|
|
#endif /* MBEDTLS_ENTROPY_NV_SEED */
|
|
|
|
#if !defined(MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT)
|
|
|
|
/**
|
|
* \brief The platform context structure.
|
|
*
|
|
* \note This structure may be used to assist platform-specific
|
|
* setup or teardown operations.
|
|
*/
|
|
typedef struct {
|
|
char dummy; /**< Placeholder member, as empty structs are not portable. */
|
|
}
|
|
mbedtls_platform_context;
|
|
|
|
#else
|
|
#include "platform_alt.h"
|
|
#endif /* !MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT */
|
|
|
|
/**
|
|
* \brief This function performs any platform initialization operations.
|
|
*
|
|
* \param ctx The Mbed TLS context.
|
|
*
|
|
* \return \c 0 on success.
|
|
*
|
|
* \note This function is intended to allow platform-specific initialization,
|
|
* and should be called before any other library functions. Its
|
|
* implementation is platform-specific, and unless
|
|
* platform-specific code is provided, it does nothing.
|
|
*
|
|
* Its use and whether it is necessary to call it is dependent on the
|
|
* platform.
|
|
*/
|
|
int mbedtls_platform_setup( mbedtls_platform_context *ctx );
|
|
/**
|
|
* \brief This function performs any platform teardown operations.
|
|
*
|
|
* \param ctx The Mbed TLS context.
|
|
*
|
|
* \note This function should be called after every other Mbed TLS module
|
|
* has been correctly freed using the appropriate free function.
|
|
* Its implementation is platform-specific, and unless
|
|
* platform-specific code is provided, it does nothing.
|
|
*
|
|
* Its use and whether it is necessary to call it is dependent on the
|
|
* platform.
|
|
*/
|
|
void mbedtls_platform_teardown( mbedtls_platform_context *ctx );
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* platform.h */
|