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 | */ |
45 | static void authnone_verf (AUTH *); |
46 | static void authnone_destroy (AUTH *); |
47 | static bool_t authnone_marshal (AUTH *, XDR *); |
48 | static bool_t authnone_validate (AUTH *, struct opaque_auth *); |
49 | static bool_t authnone_refresh (AUTH *); |
50 | |
51 | static 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 | |
61 | struct authnone_private_s { |
62 | AUTH no_client; |
63 | char marshalled_client[MAX_MARSHAL_SIZE]; |
64 | u_int mcnt; |
65 | }; |
66 | |
67 | static struct authnone_private_s authnone_private; |
68 | __libc_once_define(static, authnone_private_guard); |
69 | |
70 | static void authnone_create_once (void); |
71 | |
72 | static void |
73 | authnone_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 | |
92 | AUTH * |
93 | authnone_create (void) |
94 | { |
95 | __libc_once (authnone_private_guard, authnone_create_once); |
96 | return &authnone_private.no_client; |
97 | } |
98 | libc_hidden_nolink_sunrpc (authnone_create, GLIBC_2_0) |
99 | |
100 | static bool_t |
101 | authnone_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 | |
113 | static void |
114 | authnone_verf (AUTH *auth) |
115 | { |
116 | } |
117 | |
118 | static bool_t |
119 | authnone_validate (AUTH *auth, struct opaque_auth *oa) |
120 | { |
121 | return TRUE; |
122 | } |
123 | |
124 | static bool_t |
125 | authnone_refresh (AUTH *auth) |
126 | { |
127 | return FALSE; |
128 | } |
129 | |
130 | static void |
131 | authnone_destroy (AUTH *auth) |
132 | { |
133 | } |
134 | |