1/*
2 * Copyright (c) 2010, Oracle America, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following
12 * disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 * * Neither the name of the "Oracle America, 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
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
25 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31/*
32 * auth_none.c
33 * Creates a client authentication handle for passing "null"
34 * credentials and verifiers to remote systems.
35 */
36
37#include <rpc/rpc.h>
38#include <libc-lock.h>
39
40#define MAX_MARSHAL_SIZE 20
41
42/*
43 * Authenticator operations routines
44 */
45static void authnone_verf (AUTH *);
46static void authnone_destroy (AUTH *);
47static bool_t authnone_marshal (AUTH *, XDR *);
48static bool_t authnone_validate (AUTH *, struct opaque_auth *);
49static bool_t authnone_refresh (AUTH *);
50
51static const struct auth_ops ops = {
52 authnone_verf,
53 authnone_marshal,
54 authnone_validate,
55 authnone_refresh,
56 authnone_destroy
57};
58
59/* Internal data and routines */
60
61struct authnone_private_s {
62 AUTH no_client;
63 char marshalled_client[MAX_MARSHAL_SIZE];
64 u_int mcnt;
65};
66
67static struct authnone_private_s authnone_private;
68__libc_once_define(static, authnone_private_guard);
69
70static void authnone_create_once (void);
71
72static void
73authnone_create_once (void)
74{
75 struct authnone_private_s *ap;
76 XDR xdr_stream;
77 XDR *xdrs;
78
79 ap = &authnone_private;
80
81 ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
82 ap->no_client.ah_ops = (struct auth_ops *) &ops;
83 xdrs = &xdr_stream;
84 xdrmem_create (xdrs, ap->marshalled_client,
85 (u_int) MAX_MARSHAL_SIZE, XDR_ENCODE);
86 (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_cred);
87 (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_verf);
88 ap->mcnt = XDR_GETPOS (xdrs);
89 XDR_DESTROY (xdrs);
90}
91
92AUTH *
93authnone_create (void)
94{
95 __libc_once (authnone_private_guard, authnone_create_once);
96 return &authnone_private.no_client;
97}
98libc_hidden_nolink_sunrpc (authnone_create, GLIBC_2_0)
99
100static bool_t
101authnone_marshal (AUTH *client, XDR *xdrs)
102{
103 struct authnone_private_s *ap;
104
105 /* authnone_create returned authnone_private->no_client, which is
106 the first field of struct authnone_private_s. */
107 ap = (struct authnone_private_s *) client;
108 if (ap == NULL)
109 return FALSE;
110 return (*xdrs->x_ops->x_putbytes) (xdrs, ap->marshalled_client, ap->mcnt);
111}
112
113static void
114authnone_verf (AUTH *auth)
115{
116}
117
118static bool_t
119authnone_validate (AUTH *auth, struct opaque_auth *oa)
120{
121 return TRUE;
122}
123
124static bool_t
125authnone_refresh (AUTH *auth)
126{
127 return FALSE;
128}
129
130static void
131authnone_destroy (AUTH *auth)
132{
133}
134