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Add check read ptr macro

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu 2021-09-19 18:05:08 +08:00
parent 0c7c524b25
commit 34da3727d6
1 changed files with 23 additions and 0 deletions
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23
library/ssl_misc.h
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@ -409,6 +409,29 @@ static inline int mbedtls_ssl_chk_buf_ptr( const uint8_t *cur,
} \
} while( 0 )
/**
* \brief This macro checks if the remaining size in a input buffer is
* greater or equal than a needed space. If it is not the case,
* it returns an SSL_DECODE_ERROR error and sends DECODE_ERROR
* alert message.
*
* \param cur Pointer to the current position in the buffer.
* \param end Pointer to one past the end of the buffer.
* \param need Needed space in bytes.
*
*/
#define MBEDTLS_SSL_CHK_BUF_READ_PTR( cur, end, need ) \
do { \
if( mbedtls_ssl_chk_buf_ptr( ( cur ), ( end ), ( need ) ) != 0 ) \
{ \
MBEDTLS_SSL_DEBUG_MSG( 1, \
( "missing input data in %s", __func__ ) ); \
MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR, \
MBEDTLS_ERR_SSL_DECODE_ERROR ); \
return( MBEDTLS_ERR_SSL_DECODE_ERROR ); \
} \
} while( 0 )
#ifdef __cplusplus
extern "C" {
#endif