auth_none.c

<B>Digital的Unix操作系统VAX 4.2源码</B>

#ifndef lint
static char *sccsid = "@(#)auth_none.c	4.1      ULTRIX  7/3/90";
#endif lint

/************************************************************************
 *									*
 *			Copyright (c) 1986 by				*
 *		Digital Equipment Corporation, Maynard, MA		*
 *			All rights reserved.				*
 *									*
 *   This software is furnished under a license and may be used and	*
 *   copied  only  in accordance with the terms of such license and	*
 *   with the  inclusion  of  the  above  copyright  notice.   This	*
 *   software  or  any  other copies thereof may not be provided or	*
 *   otherwise made available to any other person.  No title to and	*
 *   ownership of the software is hereby transferred.			*
 *									*
 *   This software is  derived  from  software  received  from  the	*
 *   University    of   California,   Berkeley,   and   from   Bell	*
 *   Laboratories.  Use, duplication, or disclosure is  subject  to	*
 *   restrictions  under  license  agreements  with  University  of	*
 *   California and with AT&T.						*
 *									*
 *   The information in this software is subject to change  without	*
 *   notice  and should not be construed as a commitment by Digital	*
 *   Equipment Corporation.						*
 *									*
 *   Digital assumes no responsibility for the use  or  reliability	*
 *   of its software on equipment which is not supplied by Digital.	*
 *									*
 ************************************************************************/

/*
 *	Portions of this software have been licensed to 
 *	Digital Equipment Company, Maynard, MA.
 *	Copyright (c) 1988 Sun Microsystems, Inc.  ALL RIGHTS RESERVED.
 */

/*
 * auth_none.c
 * Creates a client authentication handle for passing "null" 
 * credentials and verifiers to remote systems. 
 * 
 */
/*	change log
 *	04/12/89  jhw	Synced code to SUN V4.0
 */

#include <rpc/types.h>
#include <rpc/xdr.h>
#include <rpc/auth.h>
#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 struct authnone_private {
	AUTH	no_client;
	char	marshalled_client[MAX_MARSHEL_SIZE];
	u_int	mcnt;
} *authnone_private;

AUTH *
authnone_create()
{
	register struct authnone_private *ap = authnone_private;
	XDR xdr_stream;
	register XDR *xdrs;

	if (ap == 0) {
		ap = (struct authnone_private *)calloc(1, sizeof (*ap));
		if (ap == 0)
			return (0);
		authnone_private = ap;
	}
	if (!ap->mcnt) {
		ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
		ap->no_client.ah_ops = &ops;
		xdrs = &xdr_stream;
		xdrmem_create(xdrs, ap->marshalled_client, (u_int)MAX_MARSHEL_SIZE,
		    XDR_ENCODE);
		(void)xdr_opaque_auth(xdrs, &ap->no_client.ah_cred);
		(void)xdr_opaque_auth(xdrs, &ap->no_client.ah_verf);
		ap->mcnt = XDR_GETPOS(xdrs);
		XDR_DESTROY(xdrs);
	}
	return (&ap->no_client);
}

/*ARGSUSED*/
static bool_t
authnone_marshal(client, xdrs)
	AUTH *client;
	XDR *xdrs;
{
	register struct authnone_private *ap = authnone_private;

	if (ap == 0)
		return (0);
	return ((*xdrs->x_ops->x_putbytes)(xdrs,
	    ap->marshalled_client, ap->mcnt));
}

static void 
authnone_verf()
{
}

static bool_t
authnone_validate()
{

	return (TRUE);
}

static bool_t
authnone_refresh()
{

	return (FALSE);
}

static void
authnone_destroy()
{
}