1/*	$NetBSD: auth_none.c,v 1.15 2012/03/20 17:14:50 matt Exp $	*/
2
3/*
4 * Copyright (c) 2010, Oracle America, Inc.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met:
9 *
10 *     * Redistributions of source code must retain the above copyright
11 *       notice, this list of conditions and the following disclaimer.
12 *     * Redistributions in binary form must reproduce the above
13 *       copyright notice, this list of conditions and the following
14 *       disclaimer in the documentation and/or other materials
15 *       provided with the distribution.
16 *     * Neither the name of the "Oracle America, Inc." nor the names of its
17 *       contributors may be used to endorse or promote products derived
18 *       from this software without specific prior written permission.
19 *
20 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
25 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
27 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include <sys/cdefs.h>
35#if defined(LIBC_SCCS) && !defined(lint)
36#if 0
37static char *sccsid = "@(#)auth_none.c 1.19 87/08/11 Copyr 1984 Sun Micro";
38static char *sccsid = "@(#)auth_none.c	2.1 88/07/29 4.0 RPCSRC";
39#else
40__RCSID("$NetBSD: auth_none.c,v 1.15 2012/03/20 17:14:50 matt Exp $");
41#endif
42#endif
43
44/*
45 * auth_none.c
46 * Creates a client authentication handle for passing "null"
47 * credentials and verifiers to remote systems.
48 *
49 * Copyright (C) 1984, Sun Microsystems, Inc.
50 */
51
52#include "namespace.h"
53
54#include <assert.h>
55#include <stdlib.h>
56
57#include <rpc/types.h>
58#include <rpc/xdr.h>
59#include <rpc/auth.h>
60
61#ifdef __weak_alias
62__weak_alias(authnone_create,_authnone_create)
63#endif
64
65#define MAX_MARSHAL_SIZE 20
66
67/*
68 * Authenticator operations routines
69 */
70
71static bool_t authnone_marshal(AUTH *, XDR *);
72static void authnone_verf(AUTH *);
73static bool_t authnone_validate(AUTH *, struct opaque_auth *);
74static bool_t authnone_refresh(AUTH *);
75static void authnone_destroy(AUTH *);
76
77static const struct auth_ops ops = {
78	authnone_verf,
79	authnone_marshal,
80	authnone_validate,
81	authnone_refresh,
82	authnone_destroy
83};
84
85static struct authnone_private {
86	AUTH	no_client;
87	char	marshalled_client[MAX_MARSHAL_SIZE];
88	u_int	mcnt;
89} *authnone_private;
90
91AUTH *
92authnone_create(void)
93{
94	struct authnone_private *ap = authnone_private;
95	XDR xdr_stream;
96	XDR *xdrs;
97
98	if (ap == 0) {
99		ap = (struct authnone_private *)calloc(1, sizeof (*ap));
100		if (ap == 0)
101			return (0);
102		authnone_private = ap;
103	}
104	if (!ap->mcnt) {
105		ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
106		ap->no_client.ah_ops = &ops;
107		xdrs = &xdr_stream;
108		xdrmem_create(xdrs, ap->marshalled_client,
109		    (u_int)MAX_MARSHAL_SIZE, XDR_ENCODE);
110		(void)xdr_opaque_auth(xdrs, &ap->no_client.ah_cred);
111		(void)xdr_opaque_auth(xdrs, &ap->no_client.ah_verf);
112		ap->mcnt = XDR_GETPOS(xdrs);
113		XDR_DESTROY(xdrs);
114	}
115	return (&ap->no_client);
116}
117
118/*ARGSUSED*/
119static bool_t
120authnone_marshal(AUTH *client, XDR *xdrs)
121{
122	struct authnone_private *ap = authnone_private;
123
124	_DIAGASSERT(xdrs != NULL);
125
126	if (ap == 0)
127		return (0);
128	return ((*xdrs->x_ops->x_putbytes)(xdrs,
129	    ap->marshalled_client, ap->mcnt));
130}
131
132/*ARGSUSED*/
133static void
134authnone_verf(AUTH *client)
135{
136}
137
138/*ARGSUSED*/
139static bool_t
140authnone_validate(AUTH *client, struct opaque_auth *auth)
141{
142
143	return (TRUE);
144}
145
146/*ARGSUSED*/
147static bool_t
148authnone_refresh(AUTH *client)
149{
150
151	return (FALSE);
152}
153
154/*ARGSUSED*/
155static void
156authnone_destroy(AUTH *client)
157{
158}
159