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auth_none.c revision 1.15 
      1 /*	$NetBSD: auth_none.c,v 1.15 2012/03/20 17:14:50 matt Exp $	*/
      2 
      3 /*
      4  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
      5  * unrestricted use provided that this legend is included on all tape
      6  * media and as a part of the software program in whole or part.  Users
      7  * may copy or modify Sun RPC without charge, but are not authorized
      8  * to license or distribute it to anyone else except as part of a product or
      9  * program developed by the user.
     10  *
     11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
     12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
     13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
     14  *
     15  * Sun RPC is provided with no support and without any obligation on the
     16  * part of Sun Microsystems, Inc. to assist in its use, correction,
     17  * modification or enhancement.
     18  *
     19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
     20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
     21  * OR ANY PART THEREOF.
     22  *
     23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
     24  * or profits or other special, indirect and consequential damages, even if
     25  * Sun has been advised of the possibility of such damages.
     26  *
     27  * Sun Microsystems, Inc.
     28  * 2550 Garcia Avenue
     29  * Mountain View, California  94043
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #if defined(LIBC_SCCS) && !defined(lint)
     34 #if 0
     35 static char *sccsid = "@(#)auth_none.c 1.19 87/08/11 Copyr 1984 Sun Micro";
     36 static char *sccsid = "@(#)auth_none.c	2.1 88/07/29 4.0 RPCSRC";
     37 #else
     38 __RCSID("$NetBSD: auth_none.c,v 1.15 2012/03/20 17:14:50 matt Exp $");
     39 #endif
     40 #endif
     41 
     42 /*
     43  * auth_none.c
     44  * Creates a client authentication handle for passing "null"
     45  * credentials and verifiers to remote systems.
     46  *
     47  * Copyright (C) 1984, Sun Microsystems, Inc.
     48  */
     49 
     50 #include "namespace.h"
     51 
     52 #include <assert.h>
     53 #include <stdlib.h>
     54 
     55 #include <rpc/types.h>
     56 #include <rpc/xdr.h>
     57 #include <rpc/auth.h>
     58 
     59 #ifdef __weak_alias
     60 __weak_alias(authnone_create,_authnone_create)
     61 #endif
     62 
     63 #define MAX_MARSHAL_SIZE 20
     64 
     65 /*
     66  * Authenticator operations routines
     67  */
     68 
     69 static bool_t authnone_marshal(AUTH *, XDR *);
     70 static void authnone_verf(AUTH *);
     71 static bool_t authnone_validate(AUTH *, struct opaque_auth *);
     72 static bool_t authnone_refresh(AUTH *);
     73 static void authnone_destroy(AUTH *);
     74 
     75 static const struct auth_ops ops = {
     76 	authnone_verf,
     77 	authnone_marshal,
     78 	authnone_validate,
     79 	authnone_refresh,
     80 	authnone_destroy
     81 };
     82 
     83 static struct authnone_private {
     84 	AUTH	no_client;
     85 	char	marshalled_client[MAX_MARSHAL_SIZE];
     86 	u_int	mcnt;
     87 } *authnone_private;
     88 
     89 AUTH *
     90 authnone_create(void)
     91 {
     92 	struct authnone_private *ap = authnone_private;
     93 	XDR xdr_stream;
     94 	XDR *xdrs;
     95 
     96 	if (ap == 0) {
     97 		ap = (struct authnone_private *)calloc(1, sizeof (*ap));
     98 		if (ap == 0)
     99 			return (0);
    100 		authnone_private = ap;
    101 	}
    102 	if (!ap->mcnt) {
    103 		ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
    104 		ap->no_client.ah_ops = &ops;
    105 		xdrs = &xdr_stream;
    106 		xdrmem_create(xdrs, ap->marshalled_client,
    107 		    (u_int)MAX_MARSHAL_SIZE, XDR_ENCODE);
    108 		(void)xdr_opaque_auth(xdrs, &ap->no_client.ah_cred);
    109 		(void)xdr_opaque_auth(xdrs, &ap->no_client.ah_verf);
    110 		ap->mcnt = XDR_GETPOS(xdrs);
    111 		XDR_DESTROY(xdrs);
    112 	}
    113 	return (&ap->no_client);
    114 }
    115 
    116 /*ARGSUSED*/
    117 static bool_t
    118 authnone_marshal(AUTH *client, XDR *xdrs)
    119 {
    120 	struct authnone_private *ap = authnone_private;
    121 
    122 	_DIAGASSERT(xdrs != NULL);
    123 
    124 	if (ap == 0)
    125 		return (0);
    126 	return ((*xdrs->x_ops->x_putbytes)(xdrs,
    127 	    ap->marshalled_client, ap->mcnt));
    128 }
    129 
    130 /*ARGSUSED*/
    131 static void
    132 authnone_verf(AUTH *client)
    133 {
    134 }
    135 
    136 /*ARGSUSED*/
    137 static bool_t
    138 authnone_validate(AUTH *client, struct opaque_auth *auth)
    139 {
    140 
    141 	return (TRUE);
    142 }
    143 
    144 /*ARGSUSED*/
    145 static bool_t
    146 authnone_refresh(AUTH *client)
    147 {
    148 
    149 	return (FALSE);
    150 }
    151 
    152 /*ARGSUSED*/
    153 static void
    154 authnone_destroy(AUTH *client)
    155 {
    156 }
    157