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)
34 static char *sccsid2 = "@(#)auth_none.c 1.19 87/08/11 Copyr 1984 Sun Micro";
35 static char *sccsid = "@(#)auth_none.c 2.1 88/07/29 4.0 RPCSRC";
36 #endif
37 /*
38 * auth_none.c
39 * Creates a client authentication handle for passing "null"
40 * credentials and verifiers to remote systems.
41 *
42 * Copyright (C) 1984, Sun Microsystems, Inc.
43 */
44
45 #include "namespace.h"
46 #include "reentrant.h"
47 #include <assert.h>
48 #include <stdlib.h>
49 #include <rpc/types.h>
50 #include <rpc/xdr.h>
51 #include <rpc/auth.h>
52 #include "un-namespace.h"
53 #include "mt_misc.h"
54
55 #define MAX_MARSHAL_SIZE 20
56
57 /*
58 * Authenticator operations routines
59 */
60
61 static bool_t authnone_marshal (AUTH *, XDR *);
62 static void authnone_verf (AUTH *);
63 static bool_t authnone_validate (AUTH *, struct opaque_auth *);
64 static bool_t authnone_refresh (AUTH *, void *);
65 static void authnone_destroy (AUTH *);
66
67 extern bool_t xdr_opaque_auth(XDR *, struct opaque_auth *);
68
69 static struct auth_ops *authnone_ops(void);
70
71 static struct authnone_private {
72 AUTH no_client;
73 char marshalled_client[MAX_MARSHAL_SIZE];
74 u_int mcnt;
75 } *authnone_private;
76
77 AUTH *
authnone_create(void)78 authnone_create(void)
79 {
80 struct authnone_private *ap = authnone_private;
81 XDR xdr_stream;
82 XDR *xdrs;
83
84 mutex_lock(&authnone_lock);
85 if (ap == NULL) {
86 ap = calloc(1, sizeof (*ap));
87 if (ap == NULL) {
88 mutex_unlock(&authnone_lock);
89 return (0);
90 }
91 authnone_private = ap;
92 }
93 if (!ap->mcnt) {
94 ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
95 ap->no_client.ah_ops = authnone_ops();
96 xdrs = &xdr_stream;
97 xdrmem_create(xdrs, ap->marshalled_client,
98 (u_int)MAX_MARSHAL_SIZE, XDR_ENCODE);
99 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_cred);
100 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_verf);
101 ap->mcnt = XDR_GETPOS(xdrs);
102 XDR_DESTROY(xdrs);
103 }
104 mutex_unlock(&authnone_lock);
105 return (&ap->no_client);
106 }
107
108 /*ARGSUSED*/
109 static bool_t
authnone_marshal(AUTH * client,XDR * xdrs)110 authnone_marshal(AUTH *client, XDR *xdrs)
111 {
112 struct authnone_private *ap;
113 bool_t dummy;
114
115 assert(xdrs != NULL);
116
117 ap = authnone_private;
118 if (ap == NULL) {
119 mutex_unlock(&authnone_lock);
120 return (FALSE);
121 }
122 dummy = (*xdrs->x_ops->x_putbytes)(xdrs,
123 ap->marshalled_client, ap->mcnt);
124 mutex_unlock(&authnone_lock);
125 return (dummy);
126 }
127
128 /* All these unused parameters are required to keep ANSI-C from grumbling */
129 /*ARGSUSED*/
130 static void
authnone_verf(AUTH * client)131 authnone_verf(AUTH *client)
132 {
133 }
134
135 /*ARGSUSED*/
136 static bool_t
authnone_validate(AUTH * client,struct opaque_auth * opaque)137 authnone_validate(AUTH *client, struct opaque_auth *opaque)
138 {
139
140 return (TRUE);
141 }
142
143 /*ARGSUSED*/
144 static bool_t
authnone_refresh(AUTH * client,void * dummy)145 authnone_refresh(AUTH *client, void *dummy)
146 {
147
148 return (FALSE);
149 }
150
151 /*ARGSUSED*/
152 static void
authnone_destroy(AUTH * client)153 authnone_destroy(AUTH *client)
154 {
155 }
156
157 static struct auth_ops *
authnone_ops(void)158 authnone_ops(void)
159 {
160 static struct auth_ops ops;
161
162 /* VARIABLES PROTECTED BY ops_lock: ops */
163
164 mutex_lock(&ops_lock);
165 if (ops.ah_nextverf == NULL) {
166 ops.ah_nextverf = authnone_verf;
167 ops.ah_marshal = authnone_marshal;
168 ops.ah_validate = authnone_validate;
169 ops.ah_refresh = authnone_refresh;
170 ops.ah_destroy = authnone_destroy;
171 }
172 mutex_unlock(&ops_lock);
173 return (&ops);
174 }
175