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Diffstat (limited to 'include/mbedtls/platform.h')
| -rw-r--r-- | include/mbedtls/platform.h | 485 |
1 files changed, 0 insertions, 485 deletions
diff --git a/include/mbedtls/platform.h b/include/mbedtls/platform.h deleted file mode 100644 index de3d71d..0000000 --- a/include/mbedtls/platform.h +++ /dev/null @@ -1,485 +0,0 @@ -/** - * \file platform.h - * - * \brief This file contains the definitions and functions of the - * Mbed TLS platform abstraction layer. - * - * The platform abstraction layer removes the need for the library - * to directly link to standard C library functions or operating - * system services, making the library easier to port and embed. - * Application developers and users of the library can provide their own - * implementations of these functions, or implementations specific to - * their platform, which can be statically linked to the library or - * dynamically configured at runtime. - * - * When all compilation options related to platform abstraction are - * disabled, this header just defines `mbedtls_xxx` function names - * as aliases to the standard `xxx` function. - * - * Most modules in the library and example programs are expected to - * include this header. - */ -/* - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later - */ -#ifndef MBEDTLS_PLATFORM_H -#define MBEDTLS_PLATFORM_H -#include "mbedtls/private_access.h" - -#include "mbedtls/build_info.h" - -#if defined(MBEDTLS_HAVE_TIME) -#include "mbedtls/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 mbedtls_config.h or define them on the compiler command line. - * \{ - */ - -/* The older Microsoft Windows common runtime provides non-conforming - * implementations of some standard library functions, including snprintf - * and vsnprintf. This affects MSVC and MinGW builds. - */ -#if defined(__MINGW32__) || (defined(_MSC_VER) && _MSC_VER <= 1900) -#define MBEDTLS_PLATFORM_HAS_NON_CONFORMING_SNPRINTF -#define MBEDTLS_PLATFORM_HAS_NON_CONFORMING_VSNPRINTF -#endif - -#if !defined(MBEDTLS_PLATFORM_NO_STD_FUNCTIONS) -#include <stdio.h> -#include <stdlib.h> -#if defined(MBEDTLS_HAVE_TIME) -#include <time.h> -#endif -#if !defined(MBEDTLS_PLATFORM_STD_SNPRINTF) -#if defined(MBEDTLS_PLATFORM_HAS_NON_CONFORMING_SNPRINTF) -#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_VSNPRINTF) -#if defined(MBEDTLS_PLATFORM_HAS_NON_CONFORMING_VSNPRINTF) -#define MBEDTLS_PLATFORM_STD_VSNPRINTF mbedtls_platform_win32_vsnprintf /**< The default \c vsnprintf function to use. */ -#else -#define MBEDTLS_PLATFORM_STD_VSNPRINTF vsnprintf /**< The default \c vsnprintf 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_SETBUF) -#define MBEDTLS_PLATFORM_STD_SETBUF setbuf /**< The default \c setbuf 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 */ - -/* Enable certain documented defines only when generating doxygen to avoid - * an "unrecognized define" error. */ -#if defined(__DOXYGEN__) && !defined(MBEDTLS_PLATFORM_STD_CALLOC) -#define MBEDTLS_PLATFORM_STD_CALLOC -#endif - -#if defined(__DOXYGEN__) && !defined(MBEDTLS_PLATFORM_STD_FREE) -#define MBEDTLS_PLATFORM_STD_FREE -#endif - -/** \} name SECTION: Module settings */ - -/* - * The function pointers for calloc and free. - * Please see MBEDTLS_PLATFORM_STD_CALLOC and MBEDTLS_PLATFORM_STD_FREE - * in mbedtls_config.h for more information about behaviour and requirements. - */ -#if defined(MBEDTLS_PLATFORM_MEMORY) -#if defined(MBEDTLS_PLATFORM_FREE_MACRO) && \ - defined(MBEDTLS_PLATFORM_CALLOC_MACRO) -#undef mbedtls_free -#undef mbedtls_calloc -#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 dynamically sets the memory-management - * functions used by the library, during runtime. - * - * \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 */ -#undef mbedtls_free -#undef mbedtls_calloc -#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 dynamically configures the fprintf - * function that is called when the - * mbedtls_fprintf() function is invoked by the library. - * - * \param fprintf_func The \c fprintf function implementation. - * - * \return \c 0. - */ -int mbedtls_platform_set_fprintf(int (*fprintf_func)(FILE *stream, const char *, - ...)); -#else -#undef mbedtls_fprintf -#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 dynamically configures the snprintf - * function that is called when the mbedtls_snprintf() - * function is invoked by the library. - * - * \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 */ -#undef mbedtls_printf -#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(MBEDTLS_PLATFORM_HAS_NON_CONFORMING_SNPRINTF) -/* 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 */ -#undef mbedtls_snprintf -#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 vsnprintf - * - * The vsnprintf 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(MBEDTLS_PLATFORM_HAS_NON_CONFORMING_VSNPRINTF) -#include <stdarg.h> -/* For Older Windows (inc. MSYS2), we provide our own fixed implementation */ -int mbedtls_platform_win32_vsnprintf(char *s, size_t n, const char *fmt, va_list arg); -#endif - -#if defined(MBEDTLS_PLATFORM_VSNPRINTF_ALT) -#include <stdarg.h> -extern int (*mbedtls_vsnprintf)(char *s, size_t n, const char *format, va_list arg); - -/** - * \brief Set your own snprintf function pointer - * - * \param vsnprintf_func The \c vsnprintf function implementation - * - * \return \c 0 - */ -int mbedtls_platform_set_vsnprintf(int (*vsnprintf_func)(char *s, size_t n, - const char *format, va_list arg)); -#else /* MBEDTLS_PLATFORM_VSNPRINTF_ALT */ -#undef mbedtls_vsnprintf -#if defined(MBEDTLS_PLATFORM_VSNPRINTF_MACRO) -#define mbedtls_vsnprintf MBEDTLS_PLATFORM_VSNPRINTF_MACRO -#else -#define mbedtls_vsnprintf vsnprintf -#endif /* MBEDTLS_PLATFORM_VSNPRINTF_MACRO */ -#endif /* MBEDTLS_PLATFORM_VSNPRINTF_ALT */ - -/* - * The function pointers for setbuf - */ -#if defined(MBEDTLS_PLATFORM_SETBUF_ALT) -#include <stdio.h> -/** - * \brief Function pointer to call for `setbuf()` functionality - * (changing the internal buffering on stdio calls). - * - * \note The library calls this function to disable - * buffering when reading or writing sensitive data, - * to avoid having extra copies of sensitive data - * remaining in stdio buffers after the file is - * closed. If this is not a concern, for example if - * your platform's stdio doesn't have any buffering, - * you can set mbedtls_setbuf to a function that - * does nothing. - * - * The library always calls this function with - * `buf` equal to `NULL`. - */ -extern void (*mbedtls_setbuf)(FILE *stream, char *buf); - -/** - * \brief Dynamically configure the function that is called - * when the mbedtls_setbuf() function is called by the - * library. - * - * \param setbuf_func The \c setbuf function implementation - * - * \return \c 0 - */ -int mbedtls_platform_set_setbuf(void (*setbuf_func)( - FILE *stream, char *buf)); -#else -#undef mbedtls_setbuf -#if defined(MBEDTLS_PLATFORM_SETBUF_MACRO) -/** - * \brief Macro defining the function for the library to - * call for `setbuf` functionality (changing the - * internal buffering on stdio calls). - * - * \note See extra comments on the mbedtls_setbuf() function - * pointer above. - * - * \return \c 0 on success, negative on error. - */ -#define mbedtls_setbuf MBEDTLS_PLATFORM_SETBUF_MACRO -#else -#define mbedtls_setbuf setbuf -#endif /* MBEDTLS_PLATFORM_SETBUF_MACRO */ -#endif /* MBEDTLS_PLATFORM_SETBUF_ALT */ - -/* - * The function pointers for exit - */ -#if defined(MBEDTLS_PLATFORM_EXIT_ALT) -extern void (*mbedtls_exit)(int status); - -/** - * \brief This function dynamically configures the exit - * function that is called when the mbedtls_exit() - * function is invoked by the library. - * - * \param exit_func The \c exit function implementation. - * - * \return \c 0 on success. - */ -int mbedtls_platform_set_exit(void (*exit_func)(int status)); -#else -#undef mbedtls_exit -#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 -#undef mbedtls_nv_seed_read -#undef mbedtls_nv_seed_write -#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 mbedtls_platform_context { - char MBEDTLS_PRIVATE(dummy); /**< A 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-specific initialization - * operations. - * - * \note This function should be called before any other library functions. - * - * Its implementation is platform-specific, and unless - * platform-specific code is provided, it does nothing. - * - * \note The usage and necessity of this function is dependent on the platform. - * - * \param ctx The platform context. - * - * \return \c 0 on success. - */ -int mbedtls_platform_setup(mbedtls_platform_context *ctx); -/** - * \brief This function performs any platform teardown operations. - * - * \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. - * - * \note The usage and necessity of this function is dependent on the platform. - * - * \param ctx The platform context. - * - */ -void mbedtls_platform_teardown(mbedtls_platform_context *ctx); - -#ifdef __cplusplus -} -#endif - -#endif /* platform.h */ |