--- /dev/null
+/*\r
+ * Platform abstraction layer\r
+ *\r
+ * Copyright (C) 2006-2016, ARM Limited, All Rights Reserved\r
+ * SPDX-License-Identifier: Apache-2.0\r
+ *\r
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may\r
+ * not use this file except in compliance with the License.\r
+ * You may obtain a copy of the License at\r
+ *\r
+ * http://www.apache.org/licenses/LICENSE-2.0\r
+ *\r
+ * Unless required by applicable law or agreed to in writing, software\r
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT\r
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ * See the License for the specific language governing permissions and\r
+ * limitations under the License.\r
+ *\r
+ * This file is part of mbed TLS (https://tls.mbed.org)\r
+ */\r
+\r
+#if !defined(MBEDTLS_CONFIG_FILE)\r
+#include "mbedtls/config.h"\r
+#else\r
+#include MBEDTLS_CONFIG_FILE\r
+#endif\r
+\r
+#if defined(MBEDTLS_PLATFORM_C)\r
+\r
+#include "mbedtls/platform.h"\r
+#include "mbedtls/platform_util.h"\r
+\r
+/* The compile time configuration of memory allocation via the macros\r
+ * MBEDTLS_PLATFORM_{FREE/CALLOC}_MACRO takes precedence over the runtime\r
+ * configuration via mbedtls_platform_set_calloc_free(). So, omit everything\r
+ * related to the latter if MBEDTLS_PLATFORM_{FREE/CALLOC}_MACRO are defined. */\r
+#if defined(MBEDTLS_PLATFORM_MEMORY) && \\r
+ !( defined(MBEDTLS_PLATFORM_CALLOC_MACRO) && \\r
+ defined(MBEDTLS_PLATFORM_FREE_MACRO) )\r
+\r
+#if !defined(MBEDTLS_PLATFORM_STD_CALLOC)\r
+static void *platform_calloc_uninit( size_t n, size_t size )\r
+{\r
+ ((void) n);\r
+ ((void) size);\r
+ return( NULL );\r
+}\r
+\r
+#define MBEDTLS_PLATFORM_STD_CALLOC platform_calloc_uninit\r
+#endif /* !MBEDTLS_PLATFORM_STD_CALLOC */\r
+\r
+#if !defined(MBEDTLS_PLATFORM_STD_FREE)\r
+static void platform_free_uninit( void *ptr )\r
+{\r
+ ((void) ptr);\r
+}\r
+\r
+#define MBEDTLS_PLATFORM_STD_FREE platform_free_uninit\r
+#endif /* !MBEDTLS_PLATFORM_STD_FREE */\r
+\r
+static void * (*mbedtls_calloc_func)( size_t, size_t ) = MBEDTLS_PLATFORM_STD_CALLOC;\r
+static void (*mbedtls_free_func)( void * ) = MBEDTLS_PLATFORM_STD_FREE;\r
+\r
+void * mbedtls_calloc( size_t nmemb, size_t size )\r
+{\r
+ return (*mbedtls_calloc_func)( nmemb, size );\r
+}\r
+\r
+void mbedtls_free( void * ptr )\r
+{\r
+ (*mbedtls_free_func)( ptr );\r
+}\r
+\r
+int mbedtls_platform_set_calloc_free( void * (*calloc_func)( size_t, size_t ),\r
+ void (*free_func)( void * ) )\r
+{\r
+ mbedtls_calloc_func = calloc_func;\r
+ mbedtls_free_func = free_func;\r
+ return( 0 );\r
+}\r
+#endif /* MBEDTLS_PLATFORM_MEMORY &&\r
+ !( defined(MBEDTLS_PLATFORM_CALLOC_MACRO) &&\r
+ defined(MBEDTLS_PLATFORM_FREE_MACRO) ) */\r
+\r
+#if defined(MBEDTLS_PLATFORM_HAS_NON_CONFORMING_SNPRINTF)\r
+#include <stdarg.h>\r
+int mbedtls_platform_win32_snprintf( char *s, size_t n, const char *fmt, ... )\r
+{\r
+ int ret;\r
+ va_list argp;\r
+\r
+ va_start( argp, fmt );\r
+ ret = mbedtls_vsnprintf( s, n, fmt, argp );\r
+ va_end( argp );\r
+\r
+ return( ret );\r
+}\r
+#endif\r
+\r
+#if defined(MBEDTLS_PLATFORM_SNPRINTF_ALT)\r
+#if !defined(MBEDTLS_PLATFORM_STD_SNPRINTF)\r
+/*\r
+ * Make dummy function to prevent NULL pointer dereferences\r
+ */\r
+static int platform_snprintf_uninit( char * s, size_t n,\r
+ const char * format, ... )\r
+{\r
+ ((void) s);\r
+ ((void) n);\r
+ ((void) format);\r
+ return( 0 );\r
+}\r
+\r
+#define MBEDTLS_PLATFORM_STD_SNPRINTF platform_snprintf_uninit\r
+#endif /* !MBEDTLS_PLATFORM_STD_SNPRINTF */\r
+\r
+int (*mbedtls_snprintf)( char * s, size_t n,\r
+ const char * format,\r
+ ... ) = MBEDTLS_PLATFORM_STD_SNPRINTF;\r
+\r
+int mbedtls_platform_set_snprintf( int (*snprintf_func)( char * s, size_t n,\r
+ const char * format,\r
+ ... ) )\r
+{\r
+ mbedtls_snprintf = snprintf_func;\r
+ return( 0 );\r
+}\r
+#endif /* MBEDTLS_PLATFORM_SNPRINTF_ALT */\r
+\r
+#if defined(MBEDTLS_PLATFORM_HAS_NON_CONFORMING_VSNPRINTF)\r
+#include <stdarg.h>\r
+int mbedtls_platform_win32_vsnprintf( char *s, size_t n, const char *fmt, va_list arg )\r
+{\r
+ int ret;\r
+\r
+ /* Avoid calling the invalid parameter handler by checking ourselves */\r
+ if( s == NULL || n == 0 || fmt == NULL )\r
+ return( -1 );\r
+\r
+#if defined(_TRUNCATE)\r
+ ret = vsnprintf_s( s, n, _TRUNCATE, fmt, arg );\r
+#else\r
+ ret = vsnprintf( s, n, fmt, arg );\r
+ if( ret < 0 || (size_t) ret == n )\r
+ {\r
+ s[n-1] = '\0';\r
+ ret = -1;\r
+ }\r
+#endif\r
+\r
+ return( ret );\r
+}\r
+#endif\r
+\r
+#if defined(MBEDTLS_PLATFORM_VSNPRINTF_ALT)\r
+#if !defined(MBEDTLS_PLATFORM_STD_VSNPRINTF)\r
+/*\r
+ * Make dummy function to prevent NULL pointer dereferences\r
+ */\r
+static int platform_vsnprintf_uninit( char * s, size_t n,\r
+ const char * format, va_list arg )\r
+{\r
+ ((void) s);\r
+ ((void) n);\r
+ ((void) format);\r
+ ((void) arg);\r
+ return( -1 );\r
+}\r
+\r
+#define MBEDTLS_PLATFORM_STD_VSNPRINTF platform_vsnprintf_uninit\r
+#endif /* !MBEDTLS_PLATFORM_STD_VSNPRINTF */\r
+\r
+int (*mbedtls_vsnprintf)( char * s, size_t n,\r
+ const char * format,\r
+ va_list arg ) = MBEDTLS_PLATFORM_STD_VSNPRINTF;\r
+\r
+int mbedtls_platform_set_vsnprintf( int (*vsnprintf_func)( char * s, size_t n,\r
+ const char * format,\r
+ va_list arg ) )\r
+{\r
+ mbedtls_vsnprintf = vsnprintf_func;\r
+ return( 0 );\r
+}\r
+#endif /* MBEDTLS_PLATFORM_VSNPRINTF_ALT */\r
+\r
+#if defined(MBEDTLS_PLATFORM_PRINTF_ALT)\r
+#if !defined(MBEDTLS_PLATFORM_STD_PRINTF)\r
+/*\r
+ * Make dummy function to prevent NULL pointer dereferences\r
+ */\r
+static int platform_printf_uninit( const char *format, ... )\r
+{\r
+ ((void) format);\r
+ return( 0 );\r
+}\r
+\r
+#define MBEDTLS_PLATFORM_STD_PRINTF platform_printf_uninit\r
+#endif /* !MBEDTLS_PLATFORM_STD_PRINTF */\r
+\r
+int (*mbedtls_printf)( const char *, ... ) = MBEDTLS_PLATFORM_STD_PRINTF;\r
+\r
+int mbedtls_platform_set_printf( int (*printf_func)( const char *, ... ) )\r
+{\r
+ mbedtls_printf = printf_func;\r
+ return( 0 );\r
+}\r
+#endif /* MBEDTLS_PLATFORM_PRINTF_ALT */\r
+\r
+#if defined(MBEDTLS_PLATFORM_FPRINTF_ALT)\r
+#if !defined(MBEDTLS_PLATFORM_STD_FPRINTF)\r
+/*\r
+ * Make dummy function to prevent NULL pointer dereferences\r
+ */\r
+static int platform_fprintf_uninit( FILE *stream, const char *format, ... )\r
+{\r
+ ((void) stream);\r
+ ((void) format);\r
+ return( 0 );\r
+}\r
+\r
+#define MBEDTLS_PLATFORM_STD_FPRINTF platform_fprintf_uninit\r
+#endif /* !MBEDTLS_PLATFORM_STD_FPRINTF */\r
+\r
+int (*mbedtls_fprintf)( FILE *, const char *, ... ) =\r
+ MBEDTLS_PLATFORM_STD_FPRINTF;\r
+\r
+int mbedtls_platform_set_fprintf( int (*fprintf_func)( FILE *, const char *, ... ) )\r
+{\r
+ mbedtls_fprintf = fprintf_func;\r
+ return( 0 );\r
+}\r
+#endif /* MBEDTLS_PLATFORM_FPRINTF_ALT */\r
+\r
+#if defined(MBEDTLS_PLATFORM_EXIT_ALT)\r
+#if !defined(MBEDTLS_PLATFORM_STD_EXIT)\r
+/*\r
+ * Make dummy function to prevent NULL pointer dereferences\r
+ */\r
+static void platform_exit_uninit( int status )\r
+{\r
+ ((void) status);\r
+}\r
+\r
+#define MBEDTLS_PLATFORM_STD_EXIT platform_exit_uninit\r
+#endif /* !MBEDTLS_PLATFORM_STD_EXIT */\r
+\r
+void (*mbedtls_exit)( int status ) = MBEDTLS_PLATFORM_STD_EXIT;\r
+\r
+int mbedtls_platform_set_exit( void (*exit_func)( int status ) )\r
+{\r
+ mbedtls_exit = exit_func;\r
+ return( 0 );\r
+}\r
+#endif /* MBEDTLS_PLATFORM_EXIT_ALT */\r
+\r
+#if defined(MBEDTLS_HAVE_TIME)\r
+\r
+#if defined(MBEDTLS_PLATFORM_TIME_ALT)\r
+#if !defined(MBEDTLS_PLATFORM_STD_TIME)\r
+/*\r
+ * Make dummy function to prevent NULL pointer dereferences\r
+ */\r
+static mbedtls_time_t platform_time_uninit( mbedtls_time_t* timer )\r
+{\r
+ ((void) timer);\r
+ return( 0 );\r
+}\r
+\r
+#define MBEDTLS_PLATFORM_STD_TIME platform_time_uninit\r
+#endif /* !MBEDTLS_PLATFORM_STD_TIME */\r
+\r
+mbedtls_time_t (*mbedtls_time)( mbedtls_time_t* timer ) = MBEDTLS_PLATFORM_STD_TIME;\r
+\r
+int mbedtls_platform_set_time( mbedtls_time_t (*time_func)( mbedtls_time_t* timer ) )\r
+{\r
+ mbedtls_time = time_func;\r
+ return( 0 );\r
+}\r
+#endif /* MBEDTLS_PLATFORM_TIME_ALT */\r
+\r
+#endif /* MBEDTLS_HAVE_TIME */\r
+\r
+#if defined(MBEDTLS_ENTROPY_NV_SEED)\r
+#if !defined(MBEDTLS_PLATFORM_NO_STD_FUNCTIONS) && defined(MBEDTLS_FS_IO)\r
+/* Default implementations for the platform independent seed functions use\r
+ * standard libc file functions to read from and write to a pre-defined filename\r
+ */\r
+int mbedtls_platform_std_nv_seed_read( unsigned char *buf, size_t buf_len )\r
+{\r
+ FILE *file;\r
+ size_t n;\r
+\r
+ if( ( file = fopen( MBEDTLS_PLATFORM_STD_NV_SEED_FILE, "rb" ) ) == NULL )\r
+ return( -1 );\r
+\r
+ if( ( n = fread( buf, 1, buf_len, file ) ) != buf_len )\r
+ {\r
+ fclose( file );\r
+ mbedtls_platform_zeroize( buf, buf_len );\r
+ return( -1 );\r
+ }\r
+\r
+ fclose( file );\r
+ return( (int)n );\r
+}\r
+\r
+int mbedtls_platform_std_nv_seed_write( unsigned char *buf, size_t buf_len )\r
+{\r
+ FILE *file;\r
+ size_t n;\r
+\r
+ if( ( file = fopen( MBEDTLS_PLATFORM_STD_NV_SEED_FILE, "w" ) ) == NULL )\r
+ return -1;\r
+\r
+ if( ( n = fwrite( buf, 1, buf_len, file ) ) != buf_len )\r
+ {\r
+ fclose( file );\r
+ return -1;\r
+ }\r
+\r
+ fclose( file );\r
+ return( (int)n );\r
+}\r
+#endif /* MBEDTLS_PLATFORM_NO_STD_FUNCTIONS */\r
+\r
+#if defined(MBEDTLS_PLATFORM_NV_SEED_ALT)\r
+#if !defined(MBEDTLS_PLATFORM_STD_NV_SEED_READ)\r
+/*\r
+ * Make dummy function to prevent NULL pointer dereferences\r
+ */\r
+static int platform_nv_seed_read_uninit( unsigned char *buf, size_t buf_len )\r
+{\r
+ ((void) buf);\r
+ ((void) buf_len);\r
+ return( -1 );\r
+}\r
+\r
+#define MBEDTLS_PLATFORM_STD_NV_SEED_READ platform_nv_seed_read_uninit\r
+#endif /* !MBEDTLS_PLATFORM_STD_NV_SEED_READ */\r
+\r
+#if !defined(MBEDTLS_PLATFORM_STD_NV_SEED_WRITE)\r
+/*\r
+ * Make dummy function to prevent NULL pointer dereferences\r
+ */\r
+static int platform_nv_seed_write_uninit( unsigned char *buf, size_t buf_len )\r
+{\r
+ ((void) buf);\r
+ ((void) buf_len);\r
+ return( -1 );\r
+}\r
+\r
+#define MBEDTLS_PLATFORM_STD_NV_SEED_WRITE platform_nv_seed_write_uninit\r
+#endif /* !MBEDTLS_PLATFORM_STD_NV_SEED_WRITE */\r
+\r
+int (*mbedtls_nv_seed_read)( unsigned char *buf, size_t buf_len ) =\r
+ MBEDTLS_PLATFORM_STD_NV_SEED_READ;\r
+int (*mbedtls_nv_seed_write)( unsigned char *buf, size_t buf_len ) =\r
+ MBEDTLS_PLATFORM_STD_NV_SEED_WRITE;\r
+\r
+int mbedtls_platform_set_nv_seed(\r
+ int (*nv_seed_read_func)( unsigned char *buf, size_t buf_len ),\r
+ int (*nv_seed_write_func)( unsigned char *buf, size_t buf_len ) )\r
+{\r
+ mbedtls_nv_seed_read = nv_seed_read_func;\r
+ mbedtls_nv_seed_write = nv_seed_write_func;\r
+ return( 0 );\r
+}\r
+#endif /* MBEDTLS_PLATFORM_NV_SEED_ALT */\r
+#endif /* MBEDTLS_ENTROPY_NV_SEED */\r
+\r
+#if !defined(MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT)\r
+/*\r
+ * Placeholder platform setup that does nothing by default\r
+ */\r
+int mbedtls_platform_setup( mbedtls_platform_context *ctx )\r
+{\r
+ (void)ctx;\r
+\r
+ return( 0 );\r
+}\r
+\r
+/*\r
+ * Placeholder platform teardown that does nothing by default\r
+ */\r
+void mbedtls_platform_teardown( mbedtls_platform_context *ctx )\r
+{\r
+ (void)ctx;\r
+}\r
+#endif /* MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT */\r
+\r
+#endif /* MBEDTLS_PLATFORM_C */\r
projects / freertos / blobdiff