auth_none.c revision 261046 
1/*	$NetBSD: auth_none.c,v 1.13 2000/01/22 22:19:17 mycroft Exp $	*/
2
3/*-
4 * Copyright (c) 2009, Sun Microsystems, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * - Redistributions of source code must retain the above copyright notice,
10 *   this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright notice,
12 *   this list of conditions and the following disclaimer in the documentation
13 *   and/or other materials provided with the distribution.
14 * - Neither the name of Sun Microsystems, Inc. nor the names of its
15 *   contributors may be used to endorse or promote products derived
16 *   from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#if defined(LIBC_SCCS) && !defined(lint)
32static char *sccsid2 = "@(#)auth_none.c 1.19 87/08/11 Copyr 1984 Sun Micro";
33static char *sccsid = "@(#)auth_none.c	2.1 88/07/29 4.0 RPCSRC";
34#endif
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD: stable/10/sys/rpc/auth_none.c 261046 2014-01-22 23:45:27Z mav $");
37
38/*
39 * auth_none.c
40 * Creates a client authentication handle for passing "null"
41 * credentials and verifiers to remote systems.
42 *
43 * Copyright (C) 1984, Sun Microsystems, Inc.
44 */
45
46#include <sys/param.h>
47#include <sys/systm.h>
48#include <sys/kernel.h>
49#include <sys/lock.h>
50#include <sys/malloc.h>
51#include <sys/mutex.h>
52
53#include <rpc/types.h>
54#include <rpc/xdr.h>
55#include <rpc/auth.h>
56#include <rpc/clnt.h>
57
58#define MAX_MARSHAL_SIZE 20
59
60/*
61 * Authenticator operations routines
62 */
63
64static bool_t authnone_marshal (AUTH *, uint32_t, XDR *, struct mbuf *);
65static void authnone_verf (AUTH *);
66static bool_t authnone_validate (AUTH *, uint32_t, struct opaque_auth *,
67    struct mbuf **);
68static bool_t authnone_refresh (AUTH *, void *);
69static void authnone_destroy (AUTH *);
70
71static struct auth_ops authnone_ops = {
72	.ah_nextverf =		authnone_verf,
73	.ah_marshal =		authnone_marshal,
74	.ah_validate =		authnone_validate,
75	.ah_refresh =		authnone_refresh,
76	.ah_destroy =		authnone_destroy,
77};
78
79struct authnone_private {
80	AUTH	no_client;
81	char	mclient[MAX_MARSHAL_SIZE];
82	u_int	mcnt;
83};
84
85static struct authnone_private authnone_private;
86
87static void
88authnone_init(void *dummy)
89{
90	struct authnone_private *ap = &authnone_private;
91	XDR xdrs;
92
93	ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
94	ap->no_client.ah_ops = &authnone_ops;
95	xdrmem_create(&xdrs, ap->mclient, MAX_MARSHAL_SIZE, XDR_ENCODE);
96	xdr_opaque_auth(&xdrs, &ap->no_client.ah_cred);
97	xdr_opaque_auth(&xdrs, &ap->no_client.ah_verf);
98	ap->mcnt = XDR_GETPOS(&xdrs);
99	XDR_DESTROY(&xdrs);
100}
101SYSINIT(authnone_init, SI_SUB_KMEM, SI_ORDER_ANY, authnone_init, NULL);
102
103AUTH *
104authnone_create()
105{
106	struct authnone_private *ap = &authnone_private;
107
108	return (&ap->no_client);
109}
110
111/*ARGSUSED*/
112static bool_t
113authnone_marshal(AUTH *client, uint32_t xid, XDR *xdrs, struct mbuf *args)
114{
115	struct authnone_private *ap = &authnone_private;
116
117	KASSERT(xdrs != NULL, ("authnone_marshal: xdrs is null"));
118
119	if (!XDR_PUTBYTES(xdrs, ap->mclient, ap->mcnt))
120		return (FALSE);
121
122	xdrmbuf_append(xdrs, args);
123
124	return (TRUE);
125}
126
127/* All these unused parameters are required to keep ANSI-C from grumbling */
128/*ARGSUSED*/
129static void
130authnone_verf(AUTH *client)
131{
132}
133
134/*ARGSUSED*/
135static bool_t
136authnone_validate(AUTH *client, uint32_t xid, struct opaque_auth *opaque,
137    struct mbuf **mrepp)
138{
139
140	return (TRUE);
141}
142
143/*ARGSUSED*/
144static bool_t
145authnone_refresh(AUTH *client, void *dummy)
146{
147
148	return (FALSE);
149}
150
151/*ARGSUSED*/
152static void
153authnone_destroy(AUTH *client)
154{
155}
156