diff options
| author | Andres Amaya Garcia <Andres.AmayaGarcia@arm.com> | 2018-08-16 21:42:09 +0100 |
|---|---|---|
| committer | Andres Amaya Garcia <Andres.AmayaGarcia@arm.com> | 2018-08-16 21:42:09 +0100 |
| commit | 1abb368b8760569a53350f6d7f7cd628812f29d5 (patch) | |
| tree | ce8b89995991306b33598a6eda0de335790b5e0c /library/platform_util.c | |
| parent | d7177435e3eb9ec7c1c34e16da9b6385003543e9 (diff) | |
Make gmtime() configurable at compile-time
Diffstat (limited to 'library/platform_util.c')
| -rw-r--r-- | library/platform_util.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/library/platform_util.c b/library/platform_util.c index 1a57de93..e41f3c49 100644 --- a/library/platform_util.c +++ b/library/platform_util.c @@ -20,6 +20,12 @@ * This file is part of Mbed TLS (https://tls.mbed.org) */ +/* + * Ensure gmtime_r is available even with -std=c99; must be included before + * config.h, which pulls in glibc's features.h. Harmless on other platforms. + */ +#define _POSIX_C_SOURCE 200112L + #if !defined(MBEDTLS_CONFIG_FILE) #include "mbedtls/config.h" #else @@ -27,6 +33,7 @@ #endif #include "mbedtls/platform_util.h" +#include "mbedtls/threading.h" #include <stddef.h> #include <string.h> @@ -65,3 +72,45 @@ void mbedtls_platform_zeroize( void *buf, size_t len ) memset_func( buf, 0, len ); } #endif /* MBEDTLS_PLATFORM_ZEROIZE_ALT */ + +#if defined(MBEDTLS_HAVE_TIME_DATE) && !defined(MBEDTLS_PLATFORM_GMTIME_ALT) +#include <time.h> +#if !defined(_WIN32) && (defined(__unix__) || \ + (defined(__APPLE__) && defined(__MACH__))) +#include <unistd.h> +#if !defined(_POSIX_VERSION) || _POSIX_C_SOURCE > _POSIX_THREAD_SAFE_FUNCTIONS +#define PLATFORM_UTIL_USE_GMTIME +#endif /* !_POSIX_VERSION || _POSIX_C_SOURCE > _POSIX_THREAD_SAFE_FUNCTIONS */ +#endif /* !_WIN32 && (__unix__ || (__APPLE__ && __MACH__)) */ + +struct tm *mbedtls_platform_gmtime( const mbedtls_time_t *tt, + struct tm *tm_buf ) +{ +#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32) + return ( gmtime_s( tm_buf, tt ) == 0 ) ? tm_buf : NULL; +#elif !defined(PLATFORM_UTIL_USE_GMTIME) + return gmtime_r( tt, tm_buf ); +#else + struct tm *lt; + +#if defined(MBEDTLS_THREADING_C) + if( mbedtls_mutex_lock( &mbedtls_threading_gmtime_mutex ) != 0 ) + return( NULL ); +#endif /* MBEDTLS_THREADING_C */ + + lt = gmtime( tt ); + + if( lt != NULL ) + { + memcpy( tm_buf, lt, sizeof( struct tm ) ); + } + +#if defined(MBEDTLS_THREADING_C) + if( mbedtls_mutex_unlock( &mbedtls_threading_gmtime_mutex ) != 0 ) + return( NULL ); +#endif /* MBEDTLS_THREADING_C */ + + return ( lt == NULL ) ? NULL : tm_buf; +#endif +} +#endif /* MBEDTLS_HAVE_TIME_DATE && MBEDTLS_PLATFORM_GMTIME_ALT */ |