/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user.
 * 
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 * 
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 * 
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 * 
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 * 
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */
#ifndef lint
static char sccsid[] = "@(#)auth_none.c 1.4 85/03/17 Copyr 1984 Sun Micro";
#endif

/*
 * auth_none.c
 * Creates a client authentication handle for passing "null" 
 * credentials and verifiers to remote systems. 
 * 
 * Copyright (C) 1984, Sun Microsystems, Inc. 
 */

#include "types.h"
#include "xdr.h"
#include "auth.h"
#define NULL ((caddr_t)0)
#define MAX_MARSHEL_SIZE 20

/*
 * Authenticator operations routines
 */
static void	authnone_verf();
static void	authnone_destroy();
static bool_t	authnone_marshal();
static bool_t	authnone_validate();
static bool_t	authnone_refresh();

static struct auth_ops ops = {
	authnone_verf,
	authnone_marshal,
	authnone_validate,
	authnone_refresh,
	authnone_destroy
};

static AUTH	no_client;
static char	marshalled_client[MAX_MARSHEL_SIZE];
static u_int	mcnt = 0;

AUTH *
authnone_create()
{
	XDR xdr_stream;
	register XDR *xdrs;

	if (! mcnt) {
		no_client.ah_cred = no_client.ah_verf = _null_auth;
		no_client.ah_ops = &ops;
		xdrs = &xdr_stream;
		xdrmem_create(xdrs, marshalled_client, (u_int)MAX_MARSHEL_SIZE,
		    XDR_ENCODE);
		if ((! xdr_opaque_auth(xdrs, &no_client.ah_cred)) ||
		    (! xdr_opaque_auth(xdrs, &no_client.ah_verf))) {
		} else {
			mcnt = XDR_GETPOS(xdrs);
		}
		XDR_DESTROY(xdrs);
	}
	return (&no_client);
}

static bool_t
/* ARGSUSED */
authnone_marshal(client, xdrs)
	AUTH *client;
	XDR *xdrs;
{

	return ((*xdrs->x_ops->x_putbytes)(xdrs, marshalled_client, mcnt));
}

static void 
authnone_verf()
{
}

static bool_t
authnone_validate()
{

	return (TRUE);
}

static bool_t
authnone_refresh()
{

	return (FALSE);
}

static void
authnone_destroy()
{
}