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engine: cvar: add null checks as these functions are passed to user's DLL

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This commit is contained in:
Alibek Omarov 2019-11-26 02:48:16 +03:00
parent 0c3be639c5
commit ecd675926a
1 changed files with 24 additions and 1 deletions
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25
engine/common/cvar.c
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@ -590,7 +590,16 @@ Cvar_Set
*/ */
void Cvar_Set( const char *var_name, const char *value ) void Cvar_Set( const char *var_name, const char *value )
{ {
convar_t *var = Cvar_FindVar( var_name ); convar_t *var;
if( !var_name )
{
// there is an error in C code if this happens
Con_Printf( "Cvar_Set: passed NULL variable name\n", var_name );
return;
}
var = Cvar_FindVar( var_name );
if( !var ) if( !var )
{ {
@ -637,6 +646,13 @@ float Cvar_VariableValue( const char *var_name )
{ {
convar_t *var; convar_t *var;
if( !var_name )
{
// there is an error in C code if this happens
Con_Printf( "Cvar_VariableValue: passed NULL variable name\n", var_name );
return 0.0f;
}
var = Cvar_FindVar( var_name ); var = Cvar_FindVar( var_name );
if( !var ) return 0.0f; if( !var ) return 0.0f;
@ -667,6 +683,13 @@ const char *Cvar_VariableString( const char *var_name )
{ {
convar_t *var; convar_t *var;
if( !var_name )
{
// there is an error in C code if this happens
Con_Printf( "Cvar_VariableString: passed NULL variable name\n", var_name );
return "";
}
var = Cvar_FindVar( var_name ); var = Cvar_FindVar( var_name );
if( !var ) return ""; if( !var ) return "";