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#include <shlib-compat.h>
40
41#define MAX_MARSHAL_SIZE 20
42
43/*
44 * Authenticator operations routines
45 */
46static void authnone_verf (AUTH *);
47static void authnone_destroy (AUTH *);
48static bool_t authnone_marshal (AUTH *, XDR *);
49static bool_t authnone_validate (AUTH *, struct opaque_auth *);
50static bool_t authnone_refresh (AUTH *);
51
52static const struct auth_ops ops = {
53 authnone_verf,
54 authnone_marshal,
55 authnone_validate,
56 authnone_refresh,
57 authnone_destroy
58};
59
60/* Internal data and routines */
61
62struct authnone_private_s {
63 AUTH no_client;
64 char marshalled_client[MAX_MARSHAL_SIZE];
65 u_int mcnt;
66};
67
68static struct authnone_private_s authnone_private;
69__libc_once_define(static, authnone_private_guard);
70
71static void authnone_create_once (void);
72
73static void
74authnone_create_once (void)
75{
76 struct authnone_private_s *ap;
77 XDR xdr_stream;
78 XDR *xdrs;
79
80 ap = &authnone_private;
81
82 ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
83 ap->no_client.ah_ops = (struct auth_ops *) &ops;
84 xdrs = &xdr_stream;
85 xdrmem_create (xdrs, ap->marshalled_client,
86 (u_int) MAX_MARSHAL_SIZE, XDR_ENCODE);
87 (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_cred);
88 (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_verf);
89 ap->mcnt = XDR_GETPOS (xdrs);
90 XDR_DESTROY (xdrs);
91}
92
93AUTH *
94authnone_create (void)
95{
96 __libc_once (authnone_private_guard, authnone_create_once);
97 return &authnone_private.no_client;
98}
99libc_hidden_nolink_sunrpc (authnone_create, GLIBC_2_0)
100
101static bool_t
102authnone_marshal (AUTH *client, XDR *xdrs)
103{
104 struct authnone_private_s *ap;
105
106 /* authnone_create returned authnone_private->no_client, which is
107 the first field of struct authnone_private_s. */
108 ap = (struct authnone_private_s *) client;
109 if (ap == NULL)
110 return FALSE;
111 return (*xdrs->x_ops->x_putbytes) (xdrs, ap->marshalled_client, ap->mcnt);
112}
113
114static void
115authnone_verf (AUTH *auth)
116{
117}
118
119static bool_t
120authnone_validate (AUTH *auth, struct opaque_auth *oa)
121{
122 return TRUE;
123}
124
125static bool_t
126authnone_refresh (AUTH *auth)
127{
128 return FALSE;
129}
130
131static void
132authnone_destroy (AUTH *auth)
133{
134}
135