about summary refs log tree commit diff
path: root/sunrpc/auth_none.c
blob: 5f252a9544faa8a08d4212bce739b1ec2ebbed7d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/*
 * Copyright (c) 2010, Oracle America, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 *     * Neither the name of the "Oracle America, Inc." nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/*
 * auth_none.c
 * Creates a client authentication handle for passing "null"
 * credentials and verifiers to remote systems.
 */

#include <rpc/rpc.h>
#include <bits/libc-lock.h>

#define MAX_MARSHAL_SIZE 20

/*
 * Authenticator operations routines
 */
static void authnone_verf (AUTH *);
static void authnone_destroy (AUTH *);
static bool_t authnone_marshal (AUTH *, XDR *);
static bool_t authnone_validate (AUTH *, struct opaque_auth *);
static bool_t authnone_refresh (AUTH *);

static const struct auth_ops ops = {
  authnone_verf,
  authnone_marshal,
  authnone_validate,
  authnone_refresh,
  authnone_destroy
};

/* Internal data and routines */

struct authnone_private_s {
  AUTH no_client;
  char marshalled_client[MAX_MARSHAL_SIZE];
  u_int mcnt;
};

static struct authnone_private_s authnone_private;
__libc_once_define(static, authnone_private_guard);

static void authnone_create_once (void);

static void
authnone_create_once (void)
{
  struct authnone_private_s *ap;
  XDR xdr_stream;
  XDR *xdrs;

  ap = &authnone_private;

  ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
  ap->no_client.ah_ops = (struct auth_ops *) &ops;
  xdrs = &xdr_stream;
  xdrmem_create (xdrs, ap->marshalled_client,
		 (u_int) MAX_MARSHAL_SIZE, XDR_ENCODE);
  (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_cred);
  (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_verf);
  ap->mcnt = XDR_GETPOS (xdrs);
  XDR_DESTROY (xdrs);
}

AUTH *
authnone_create (void)
{
  __libc_once (authnone_private_guard, authnone_create_once);
  return &authnone_private.no_client;
}
libc_hidden_nolink (authnone_create, GLIBC_2_0)

static bool_t
authnone_marshal (AUTH *client, XDR *xdrs)
{
  struct authnone_private_s *ap;

  /* authnone_create returned authnone_private->no_client, which is
     the first field of struct authnone_private_s.  */
  ap = (struct authnone_private_s *) client;
  if (ap == NULL)
    return FALSE;
  return (*xdrs->x_ops->x_putbytes) (xdrs, ap->marshalled_client, ap->mcnt);
}

static void
authnone_verf (AUTH *auth)
{
}

static bool_t
authnone_validate (AUTH *auth, struct opaque_auth *oa)
{
  return TRUE;
}

static bool_t
authnone_refresh (AUTH *auth)
{
  return FALSE;
}

static void
authnone_destroy (AUTH *auth)
{
}