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)
32 static char *sccsid2 = "@(#)auth_none.c 1.19 87/08/11 Copyr 1984 Sun Micro";
33 static char *sccsid = "@(#)auth_none.c 2.1 88/07/29 4.0 RPCSRC";
34 #endif
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
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 "namespace.h"
47 #include "reentrant.h"
48 #include <assert.h>
49 #include <stdlib.h>
50 #include <rpc/types.h>
51 #include <rpc/xdr.h>
52 #include <rpc/auth.h>
53 #include "un-namespace.h"
54 #include "mt_misc.h"
55
56 #define MAX_MARSHAL_SIZE 20
57
58 /*
59 * Authenticator operations routines
60 */
61
62 static bool_t authnone_marshal (AUTH *, XDR *);
63 static void authnone_verf (AUTH *);
64 static bool_t authnone_validate (AUTH *, struct opaque_auth *);
65 static bool_t authnone_refresh (AUTH *, void *);
66 static void authnone_destroy (AUTH *);
67
68 extern bool_t xdr_opaque_auth();
69
70 static struct auth_ops *authnone_ops();
71
72 static struct authnone_private {
73 AUTH no_client;
74 char marshalled_client[MAX_MARSHAL_SIZE];
75 u_int mcnt;
76 } *authnone_private;
77
78 AUTH *
authnone_create()79 authnone_create()
80 {
81 struct authnone_private *ap = authnone_private;
82 XDR xdr_stream;
83 XDR *xdrs;
84
85 mutex_lock(&authnone_lock);
86 if (ap == 0) {
87 ap = (struct authnone_private *)calloc(1, sizeof (*ap));
88 if (ap == 0) {
89 mutex_unlock(&authnone_lock);
90 return (0);
91 }
92 authnone_private = ap;
93 }
94 if (!ap->mcnt) {
95 ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
96 ap->no_client.ah_ops = authnone_ops();
97 xdrs = &xdr_stream;
98 xdrmem_create(xdrs, ap->marshalled_client,
99 (u_int)MAX_MARSHAL_SIZE, XDR_ENCODE);
100 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_cred);
101 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_verf);
102 ap->mcnt = XDR_GETPOS(xdrs);
103 XDR_DESTROY(xdrs);
104 }
105 mutex_unlock(&authnone_lock);
106 return (&ap->no_client);
107 }
108
109 /*ARGSUSED*/
110 static bool_t
authnone_marshal(AUTH * client,XDR * xdrs)111 authnone_marshal(AUTH *client, XDR *xdrs)
112 {
113 struct authnone_private *ap;
114 bool_t dummy;
115
116 assert(xdrs != NULL);
117
118 ap = authnone_private;
119 if (ap == NULL) {
120 mutex_unlock(&authnone_lock);
121 return (FALSE);
122 }
123 dummy = (*xdrs->x_ops->x_putbytes)(xdrs,
124 ap->marshalled_client, ap->mcnt);
125 mutex_unlock(&authnone_lock);
126 return (dummy);
127 }
128
129 /* All these unused parameters are required to keep ANSI-C from grumbling */
130 /*ARGSUSED*/
131 static void
authnone_verf(AUTH * client)132 authnone_verf(AUTH *client)
133 {
134 }
135
136 /*ARGSUSED*/
137 static bool_t
authnone_validate(AUTH * client,struct opaque_auth * opaque)138 authnone_validate(AUTH *client, struct opaque_auth *opaque)
139 {
140
141 return (TRUE);
142 }
143
144 /*ARGSUSED*/
145 static bool_t
authnone_refresh(AUTH * client,void * dummy)146 authnone_refresh(AUTH *client, void *dummy)
147 {
148
149 return (FALSE);
150 }
151
152 /*ARGSUSED*/
153 static void
authnone_destroy(AUTH * client)154 authnone_destroy(AUTH *client)
155 {
156 }
157
158 static struct auth_ops *
authnone_ops()159 authnone_ops()
160 {
161 static struct auth_ops ops;
162
163 /* VARIABLES PROTECTED BY ops_lock: ops */
164
165 mutex_lock(&ops_lock);
166 if (ops.ah_nextverf == NULL) {
167 ops.ah_nextverf = authnone_verf;
168 ops.ah_marshal = authnone_marshal;
169 ops.ah_validate = authnone_validate;
170 ops.ah_refresh = authnone_refresh;
171 ops.ah_destroy = authnone_destroy;
172 }
173 mutex_unlock(&ops_lock);
174 return (&ops);
175 }
176