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Add a callback for platform faults in platform_util.c

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Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
This commit is contained in:
Andrzej Kurek 2020-11-17 14:22:39 +01:00
parent 5eba1d82a2
commit 7f81c86a0d
5 changed files with 32 additions and 1 deletions
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12
include/mbedtls/config.h
View File

@ -2951,6 +2951,18 @@
*/
//#define MBEDTLS_MEMORY_BUFFER_ALLOC_C
/**
* \def MBEDTLS_PLATFORM_FAULT_CALLBACKS
*
* Uncomment to provide your own alternate implementation for mbedtls_platform_fault(),
* used in library/platform_util.c to signal a fault injection in either
* mbedtls_platform_memcpy or mbedtls_platform_memset.
*
* You will need to provide a header "platform_fault.h" and an implementation at
* compile time.
*/
//#define MBEDTLS_PLATFORM_FAULT_CALLBACKS
/**
* \def MBEDTLS_NET_C
*

9
library/platform_util.c
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@ -48,6 +48,12 @@
#include "mbedtls/entropy_poll.h"
#endif
#if defined(MBEDTLS_PLATFORM_FAULT_CALLBACKS)
#include "platform_fault.h"
#else
static void mbedtls_platform_fault(){}
#endif
#include <stddef.h>
#include <string.h>
@ -167,7 +173,7 @@ void *mbedtls_platform_memset( void *ptr, int value, size_t num )
return ptr;
}
}
mbedtls_platform_fault();
return NULL;
}
@ -207,6 +213,7 @@ void *mbedtls_platform_memcpy( void *dst, const void *src, size_t num )
return dst;
}
}
mbedtls_platform_fault();
return NULL;
}

3
library/version_features.c
View File

@ -729,6 +729,9 @@ static const char *features[] = {
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
"MBEDTLS_MEMORY_BUFFER_ALLOC_C",
#endif /* MBEDTLS_MEMORY_BUFFER_ALLOC_C */
#if defined(MBEDTLS_PLATFORM_FAULT_CALLBACKS)
"MBEDTLS_PLATFORM_FAULT_CALLBACKS",
#endif /* MBEDTLS_PLATFORM_FAULT_CALLBACKS */
#if defined(MBEDTLS_NET_C)
"MBEDTLS_NET_C",
#endif /* MBEDTLS_NET_C */

8
programs/ssl/query_config.c
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@ -1986,6 +1986,14 @@ int query_config( const char *config )
}
#endif /* MBEDTLS_MEMORY_BUFFER_ALLOC_C */
#if defined(MBEDTLS_PLATFORM_FAULT_CALLBACKS)
if( strcmp( "MBEDTLS_PLATFORM_FAULT_CALLBACKS", config ) == 0 )
{
MACRO_EXPANSION_TO_STR( MBEDTLS_PLATFORM_FAULT_CALLBACKS );
return( 0 );
}
#endif /* MBEDTLS_PLATFORM_FAULT_CALLBACKS */
#if defined(MBEDTLS_NET_C)
if( strcmp( "MBEDTLS_NET_C", config ) == 0 )
{

1
scripts/config.pl
View File

@ -146,6 +146,7 @@ MBEDTLS_CTR_DRBG_USE_128_BIT_KEY
MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS
MBEDTLS_VALIDATE_SSL_KEYS_INTEGRITY
MBEDTLS_OPTIMIZE_TINYCRYPT_ASM
MBEDTLS_PLATFORM_FAULT_CALLBACKS
_ALT\s*$
);