- Add better protection against DoSing connecting users from connecting

- Have Com_sprintf return string length
- add STR_LEN macro for static strings

code/qcommon/q_shared.c

@@ -919,7 +919,7 @@ int Q_CountChar(const char *string, char tocount)
 	return count;
 }
 
-void QDECL Com_sprintf(char *dest, int size, const char *fmt, ...)
+int QDECL Com_sprintf(char *dest, int size, const char *fmt, ...)
 {
 	int		len;
 	va_list		argptr;
@@ -930,6 +930,8 @@ void QDECL Com_sprintf(char *dest, int size, const char *fmt, ...)
 
 	if(len >= size)
 		Com_Printf("Com_sprintf: Output length %d too short, require %d bytes.\n", size, len + 1);
+	
+	return len;
 }
 
 /*