-int SXNET_add_id_asc(SXNET **psx, char *zone, char *user, int userlen);
-int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, char *user,
+int SXNET_add_id_asc(SXNET **psx, const char *zone, const char *user, int userlen);
+int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, const char *user,