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Minor checks to prevent NULL-pointer exceptions

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(cherry picked from commit c295b834a2)
This commit is contained in:
Paul Bakker
2013-04-12 13:18:07 +02:00
parent 93bab7ff8e
commit cecfd95aba
1 changed files with 9 additions and 0 deletions
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9
include/polarssl/md.h
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@@ -198,6 +198,9 @@ int md_free_ctx( md_context_t *ctx );
*/ */
static inline unsigned char md_get_size( const md_info_t *md_info ) static inline unsigned char md_get_size( const md_info_t *md_info )
{ {
if( md_info == NULL )
return( 0 );
return md_info->size; return md_info->size;
} }
@@ -210,6 +213,9 @@ static inline unsigned char md_get_size( const md_info_t *md_info )
*/ */
static inline md_type_t md_get_type( const md_info_t *md_info ) static inline md_type_t md_get_type( const md_info_t *md_info )
{ {
if( md_info == NULL )
return( POLARSSL_MD_NONE );
return md_info->type; return md_info->type;
} }
@@ -222,6 +228,9 @@ static inline md_type_t md_get_type( const md_info_t *md_info )
*/ */
static inline const char *md_get_name( const md_info_t *md_info ) static inline const char *md_get_name( const md_info_t *md_info )
{ {
if( md_info == NULL )
return( NULL );
return md_info->name; return md_info->name;
} }