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Use gmtime_r to fix thread-safety issue, and use mbedtls_time on Windows

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This commit is contained in:
Nicholas Wilson 2017-12-05 12:07:33 +00:00
parent 8266acacc8
commit 512b4ee9c7
4 changed files with 14 additions and 47 deletions
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7
ChangeLog
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@ -1,5 +1,12 @@
mbed TLS ChangeLog (Sorted per branch, date) mbed TLS ChangeLog (Sorted per branch, date)
= mbed TLS x.x.x branch released xxxx-xx-xx
Changes
* Allow overriding the time on Windows via the platform-time abstraction.
Fixed by Nick Wilson.
* Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
= mbed TLS 2.11.0 branch released 2018-06-18 = mbed TLS 2.11.0 branch released 2018-06-18
Features Features

3
include/mbedtls/threading.h
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@ -99,9 +99,6 @@ extern int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t *mutex );
#if defined(MBEDTLS_FS_IO) #if defined(MBEDTLS_FS_IO)
extern mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex; extern mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex;
#endif #endif
#if defined(MBEDTLS_HAVE_TIME_DATE)
extern mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex;
#endif
#endif /* MBEDTLS_THREADING_C */ #endif /* MBEDTLS_THREADING_C */
#ifdef __cplusplus #ifdef __cplusplus

9
library/threading.c
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@ -114,9 +114,6 @@ void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t *
#if defined(MBEDTLS_FS_IO) #if defined(MBEDTLS_FS_IO)
mbedtls_mutex_init( &mbedtls_threading_readdir_mutex ); mbedtls_mutex_init( &mbedtls_threading_readdir_mutex );
#endif #endif
#if defined(MBEDTLS_HAVE_TIME_DATE)
mbedtls_mutex_init( &mbedtls_threading_gmtime_mutex );
#endif
} }
/* /*
@ -127,9 +124,6 @@ void mbedtls_threading_free_alt( void )
#if defined(MBEDTLS_FS_IO) #if defined(MBEDTLS_FS_IO)
mbedtls_mutex_free( &mbedtls_threading_readdir_mutex ); mbedtls_mutex_free( &mbedtls_threading_readdir_mutex );
#endif #endif
#if defined(MBEDTLS_HAVE_TIME_DATE)
mbedtls_mutex_free( &mbedtls_threading_gmtime_mutex );
#endif
} }
#endif /* MBEDTLS_THREADING_ALT */ #endif /* MBEDTLS_THREADING_ALT */
@ -142,8 +136,5 @@ void mbedtls_threading_free_alt( void )
#if defined(MBEDTLS_FS_IO) #if defined(MBEDTLS_FS_IO)
mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex MUTEX_INIT; mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex MUTEX_INIT;
#endif #endif
#if defined(MBEDTLS_HAVE_TIME_DATE)
mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex MUTEX_INIT;
#endif
#endif /* MBEDTLS_THREADING_C */ #endif /* MBEDTLS_THREADING_C */

42
library/x509.c
View File

@ -59,14 +59,10 @@
#define mbedtls_snprintf snprintf #define mbedtls_snprintf snprintf
#endif #endif
#if defined(MBEDTLS_HAVE_TIME) #if defined(MBEDTLS_HAVE_TIME)
#include "mbedtls/platform_time.h" #include "mbedtls/platform_time.h"
#endif #endif
#if defined(MBEDTLS_HAVE_TIME_DATE)
#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
#include <windows.h>
#else
#include <time.h> #include <time.h>
#endif #endif
@ -903,36 +899,18 @@ int mbedtls_x509_key_size_helper( char *buf, size_t buf_size, const char *name )
* Set the time structure to the current time. * Set the time structure to the current time.
* Return 0 on success, non-zero on failure. * Return 0 on success, non-zero on failure.
*/ */
#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
static int x509_get_current_time( mbedtls_x509_time *now ) static int x509_get_current_time( mbedtls_x509_time *now )
{ {
SYSTEMTIME st; struct tm *lt, tm_buf;
GetSystemTime( &st );
now->year = st.wYear;
now->mon = st.wMonth;
now->day = st.wDay;
now->hour = st.wHour;
now->min = st.wMinute;
now->sec = st.wSecond;
return( 0 );
}
#else
static int x509_get_current_time( mbedtls_x509_time *now )
{
struct tm *lt;
mbedtls_time_t tt; mbedtls_time_t tt;
int ret = 0; int ret = 0;
#if defined(MBEDTLS_THREADING_C)
if( mbedtls_mutex_lock( &mbedtls_threading_gmtime_mutex ) != 0 )
return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
#endif
tt = mbedtls_time( NULL ); tt = mbedtls_time( NULL );
lt = gmtime( &tt ); #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
lt = gmtime_s( &tm_buf, &tt ) == 0 ? &tm_buf : NULL;
#else
lt = gmtime_r( &tt, &tm_buf );
#endif
if( lt == NULL ) if( lt == NULL )
ret = -1; ret = -1;
@ -946,14 +924,8 @@ static int x509_get_current_time( mbedtls_x509_time *now )
now->sec = lt->tm_sec; now->sec = lt->tm_sec;
} }
#if defined(MBEDTLS_THREADING_C)
if( mbedtls_mutex_unlock( &mbedtls_threading_gmtime_mutex ) != 0 )
return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
#endif
return( ret ); return( ret );
} }
#endif /* _WIN32 && !EFIX64 && !EFI32 */
/* /*
* Return 0 if before <= after, 1 otherwise * Return 0 if before <= after, 1 otherwise