auth_userresponse
int auth_userresponse(auth_session_t *, char *, int);
DEF_WEAK(auth_userresponse);
PROTO_NORMAL(auth_userresponse);
authok = auth_userresponse(as, passwd, 0);
if (!auth_userresponse(as, response, 0)) {
authok = auth_userresponse(authctxt->as, responses[0], 0);
auth_userresponse(authctxt->as, response, 0);