text: /*
   * 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
   */
  
  #if defined(LIBC_SCCS) && !defined(lint)
  static char *rcsid = "$OpenBSD: auth_none.c,v 1.3 1996/08/19 08:31:20 tholo Exp $";
  #endif /* LIBC_SCCS and not lint */
  
  /*
   * auth_none.c
   * Creates a client authentication handle for passing "null" 
   * credentials and verifiers to remote systems. 
   * 
   * Copyright (C) 1984, Sun Microsystems, Inc. 
   */
  
  #include <stdlib.h>
  #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()
  {
  }
  