1/*	$NetBSD: auth_none.c,v 1.13 2000/01/22 22:19:17 mycroft Exp $	*/
2
3/*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (c) 2009, Sun Microsystems, Inc.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 * - Redistributions of source code must retain the above copyright notice,
12 *   this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright notice,
14 *   this list of conditions and the following disclaimer in the documentation
15 *   and/or other materials provided with the distribution.
16 * - Neither the name of Sun Microsystems, 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 "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#if defined(LIBC_SCCS) && !defined(lint)
34static char *sccsid2 = "@(#)auth_none.c 1.19 87/08/11 Copyr 1984 Sun Micro";
35static char *sccsid = "@(#)auth_none.c	2.1 88/07/29 4.0 RPCSRC";
36#endif
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD$");
39
40/*
41 * auth_none.c
42 * Creates a client authentication handle for passing "null"
43 * credentials and verifiers to remote systems.
44 *
45 * Copyright (C) 1984, Sun Microsystems, Inc.
46 */
47
48#include <sys/param.h>
49#include <sys/systm.h>
50#include <sys/kernel.h>
51#include <sys/lock.h>
52#include <sys/malloc.h>
53#include <sys/mutex.h>
54
55#include <rpc/types.h>
56#include <rpc/xdr.h>
57#include <rpc/auth.h>
58#include <rpc/clnt.h>
59
60#define MAX_MARSHAL_SIZE 20
61
62/*
63 * Authenticator operations routines
64 */
65
66static bool_t authnone_marshal (AUTH *, uint32_t, XDR *, struct mbuf *);
67static void authnone_verf (AUTH *);
68static bool_t authnone_validate (AUTH *, uint32_t, struct opaque_auth *,
69    struct mbuf **);
70static bool_t authnone_refresh (AUTH *, void *);
71static void authnone_destroy (AUTH *);
72
73static struct auth_ops authnone_ops = {
74	.ah_nextverf =		authnone_verf,
75	.ah_marshal =		authnone_marshal,
76	.ah_validate =		authnone_validate,
77	.ah_refresh =		authnone_refresh,
78	.ah_destroy =		authnone_destroy,
79};
80
81struct authnone_private {
82	AUTH	no_client;
83	char	mclient[MAX_MARSHAL_SIZE];
84	u_int	mcnt;
85};
86
87static struct authnone_private authnone_private;
88
89static void
90authnone_init(void *dummy)
91{
92	struct authnone_private *ap = &authnone_private;
93	XDR xdrs;
94
95	ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
96	ap->no_client.ah_ops = &authnone_ops;
97	xdrmem_create(&xdrs, ap->mclient, MAX_MARSHAL_SIZE, XDR_ENCODE);
98	xdr_opaque_auth(&xdrs, &ap->no_client.ah_cred);
99	xdr_opaque_auth(&xdrs, &ap->no_client.ah_verf);
100	ap->mcnt = XDR_GETPOS(&xdrs);
101	XDR_DESTROY(&xdrs);
102}
103SYSINIT(authnone_init, SI_SUB_KMEM, SI_ORDER_ANY, authnone_init, NULL);
104
105AUTH *
106authnone_create()
107{
108	struct authnone_private *ap = &authnone_private;
109
110	return (&ap->no_client);
111}
112
113/*ARGSUSED*/
114static bool_t
115authnone_marshal(AUTH *client, uint32_t xid, XDR *xdrs, struct mbuf *args)
116{
117	struct authnone_private *ap = &authnone_private;
118
119	KASSERT(xdrs != NULL, ("authnone_marshal: xdrs is null"));
120
121	if (!XDR_PUTBYTES(xdrs, ap->mclient, ap->mcnt))
122		return (FALSE);
123
124	xdrmbuf_append(xdrs, args);
125
126	return (TRUE);
127}
128
129/* All these unused parameters are required to keep ANSI-C from grumbling */
130/*ARGSUSED*/
131static void
132authnone_verf(AUTH *client)
133{
134}
135
136/*ARGSUSED*/
137static bool_t
138authnone_validate(AUTH *client, uint32_t xid, struct opaque_auth *opaque,
139    struct mbuf **mrepp)
140{
141
142	return (TRUE);
143}
144
145/*ARGSUSED*/
146static bool_t
147authnone_refresh(AUTH *client, void *dummy)
148{
149
150	return (FALSE);
151}
152
153/*ARGSUSED*/
154static void
155authnone_destroy(AUTH *client)
156{
157}
158