From cecfd95aba06980bc50e9e2c1ba1076cf4e494ea Mon Sep 17 00:00:00 2001 From: Paul Bakker Date: Fri, 12 Apr 2013 13:18:07 +0200 Subject: [PATCH] Minor checks to prevent NULL-pointer exceptions (cherry picked from commit c295b834a2554b3f7eb792f1bc6d445e206fa55d) --- include/polarssl/md.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/polarssl/md.h b/include/polarssl/md.h index 88596cb04..6a1bdd411 100644 --- a/include/polarssl/md.h +++ b/include/polarssl/md.h @@ -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 ) { + if( md_info == NULL ) + return( 0 ); + 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 ) { + if( md_info == NULL ) + return( POLARSSL_MD_NONE ); + 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 ) { + if( md_info == NULL ) + return( NULL ); + return md_info->name; }