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add platform_set_snprintf

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This commit is contained in:
Rich Evans 2015-01-30 10:47:32 +00:00
parent 3cfb34564f
commit 46b0a8d15a
4 changed files with 63 additions and 1 deletions
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5
include/polarssl/check_config.h
View File

@ -198,6 +198,11 @@
#error "POLARSSL_PKCS11_C defined, but not all prerequisites"
#endif
#if defined(POLARSSL_PLATFORM_SNPRINTF_ALT) && ( defined(_WIN32)\
&& !defined(EFIX64) && !defined(EFI32) )
#error "POLARSSL_PLATFORM_SNPRINTF_ALT defined but not available on Windows"
#endif
#if defined(POLARSSL_RSA_C) && ( !defined(POLARSSL_BIGNUM_C) || \
!defined(POLARSSL_OID_C) )
#error "POLARSSL_RSA_C defined, but not all prerequisites"

7
include/polarssl/config.h
View File

@ -159,9 +159,13 @@
*
* All these define require POLARSSL_PLATFORM_C to be defined!
*
* WARNING: POLARSSL_PLATFORM_SNPRINTF_ALT is not available on Windows
* for compatibility reasons.
*
* Uncomment a macro to enable alternate implementation of specific base
* platform function
*/
//#define POLARSSL_PLATFORM_SNPRINTF_ALT
//#define POLARSSL_PLATFORM_PRINTF_ALT
//#define POLARSSL_PLATFORM_FPRINTF_ALT
/* \} name SECTION: System support */
@ -1890,7 +1894,7 @@
* \def POLARSSL_PLATFORM_C
*
* Enable the platform abstraction layer that allows you to re-assign
* functions like malloc(), free(), printf(), fprintf()
* functions like malloc(), free(), snprintf(), printf(), fprintf()
*
* Module: library/platform.c
* Caller: Most other .c files
@ -2238,6 +2242,7 @@
//#define POLARSSL_PLATFORM_STD_MEM_HDR <stdlib.h> /**< Header to include if POLARSSL_PLATFORM_NO_STD_FUNCTIONS is defined. Don't define if no header is needed. */
//#define POLARSSL_PLATFORM_STD_MALLOC malloc /**< Default allocator to use, can be undefined */
//#define POLARSSL_PLATFORM_STD_FREE free /**< Default free to use, can be undefined */
//#define POLARSSL_PLATFORM_STD_SNPRINTF snprintf /**< Default snprintf to use, can be undefined */
//#define POLARSSL_PLATFORM_STD_PRINTF printf /**< Default printf to use, can be undefined */
//#define POLARSSL_PLATFORM_STD_FPRINTF fprintf /**< Default fprintf to use, can be undefined */

22
include/polarssl/platform.h
View File

@ -50,6 +50,9 @@ extern "C" {
#if !defined(POLARSSL_PLATFORM_NO_STD_FUNCTIONS)
#include <stdio.h>
#include <stdlib.h>
#if !defined(POLARSSL_PLATFORM_STD_SNPRINTF)
#define POLARSSL_PLATFORM_STD_SNPRINTF snprintf /**< Default snprintf to use */
#endif
#if !defined(POLARSSL_PLATFORM_STD_PRINTF)
#define POLARSSL_PLATFORM_STD_PRINTF printf /**< Default printf to use */
#endif
@ -92,6 +95,25 @@ int platform_set_malloc_free( void * (*malloc_func)( size_t ),
#define polarssl_free free
#endif /* POLARSSL_PLATFORM_MEMORY */
/*
* The function pointers for snprintf
*/
#if defined(POLARSSL_PLATFORM_SNPRINTF_ALT)
extern int (*polarssl_snprintf)( char * s, size_t n, const char * format, ... );
/**
* \brief Set your own snprintf function pointer
*
* \param snprintf_func the snprintf function implementation
*
* \return 0
*/
int platform_set_snprintf( int (*snprintf_func)( char * s, size_t n,
const char * format, ... ) );
#else /* POLARSSL_PLATFORM_SNPRINTF_ALT */
#define polarssl_snprintf snprintf
#endif /* POLARSSL_PLATFORM_SNPRINTF_ALT */
/*
* The function pointers for printf
*/

30
library/platform.c
View File

@ -62,6 +62,36 @@ int platform_set_malloc_free( void * (*malloc_func)( size_t ),
}
#endif /* POLARSSL_PLATFORM_MEMORY */
#if defined(POLARSSL_PLATFORM_SNPRINTF_ALT)
#if !defined(POLARSSL_PLATFORM_STD_SNPRINTF)
/*
* Make dummy function to prevent NULL pointer dereferences
*/
static int platform_snprintf_uninit( char * s, size_t n,
const char * format, ... )
{
((void) s);
((void) n);
((void) format)
return( 0 );
}
#define POLARSSL_PLATFORM_STD_SNPRINTF platform_snprintf_uninit
#endif /* !POLARSSL_PLATFORM_STD_SNPRINTF */
int (*polarssl_snprintf)( char * s, size_t n,
const char * format,
... ) = POLARSSL_PLATFORM_STD_SNPRINTF;
int platform_set_snprintf( int (*snprintf_func)( char * s, size_t n,
const char * format,
... ) )
{
polarssl_snprintf = snprintf_func;
return( 0 );
}
#endif /* POLARSSL_PLATFORM_SNPRINTF_ALT */
#if defined(POLARSSL_PLATFORM_PRINTF_ALT)
#if !defined(POLARSSL_PLATFORM_STD_PRINTF)
/*