1 /*
2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
8 *
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
12 *
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
16 *
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
20 *
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
24 *
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California 94043
28 */
29 /*
30 * Copyright (C) 1984, Sun Microsystems, Inc.
31 */
32 /*
33 * auth_none.c
34 * Creates a client authentication handle for passing "null"
35 * credentials and verifiers to remote systems.
36 */
37
38 #include "rpc_private.h"
39
40
41 #define MAX_MARSHAL_SIZE 20
42
43 /*
44 * Authenticator operations routines
45 */
46 static void authnone_verf (AUTH *);
47 static void authnone_destroy (AUTH *);
48 static bool_t authnone_marshal (AUTH *, XDR *);
49 static bool_t authnone_validate (AUTH *, struct opaque_auth *);
50 static bool_t authnone_refresh (AUTH *);
51
52 static 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
62 struct authnone_private_s {
63 AUTH no_client;
64 char marshalled_client[MAX_MARSHAL_SIZE];
65 u_int mcnt;
66 };
67
68 static struct authnone_private_s authnone_private;
69 #ifdef __UCLIBC_HAS_THREADS__
70 __libc_once_define(static, authnone_private_guard);
71 #endif
72
73 static void authnone_create_once (void);
74
75 static void
authnone_create_once(void)76 authnone_create_once (void)
77 {
78 struct authnone_private_s *ap;
79 XDR xdr_stream;
80 XDR *xdrs;
81
82 ap = &authnone_private;
83
84 ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
85 ap->no_client.ah_ops = (struct auth_ops *) &ops;
86 xdrs = &xdr_stream;
87 xdrmem_create(xdrs, ap->marshalled_client,
88 (u_int) MAX_MARSHAL_SIZE, XDR_ENCODE);
89 (void) xdr_opaque_auth(xdrs, &ap->no_client.ah_cred);
90 (void) xdr_opaque_auth(xdrs, &ap->no_client.ah_verf);
91 ap->mcnt = XDR_GETPOS (xdrs);
92 XDR_DESTROY (xdrs);
93 }
94
95 AUTH *
authnone_create(void)96 authnone_create (void)
97 {
98 #ifdef __UCLIBC_HAS_THREADS__
99 __libc_once (authnone_private_guard, authnone_create_once);
100 #else
101 authnone_create_once();
102 #endif
103 return &authnone_private.no_client;
104 }
libc_hidden_def(authnone_create)105 libc_hidden_def(authnone_create)
106
107 static bool_t
108 authnone_marshal (AUTH *client, XDR *xdrs)
109 {
110 struct authnone_private_s *ap;
111
112 /* authnone_create returned authnone_private->no_client, which is
113 the first field of struct authnone_private_s. */
114 ap = (struct authnone_private_s *) client;
115 if (ap == NULL)
116 return FALSE;
117 return (*xdrs->x_ops->x_putbytes) (xdrs, ap->marshalled_client, ap->mcnt);
118 }
119
120 static void
authnone_verf(AUTH * auth attribute_unused)121 authnone_verf (AUTH *auth attribute_unused)
122 {
123 }
124
125 static bool_t
authnone_validate(AUTH * auth attribute_unused,struct opaque_auth * oa attribute_unused)126 authnone_validate (AUTH *auth attribute_unused, struct opaque_auth *oa attribute_unused)
127 {
128 return TRUE;
129 }
130
131 static bool_t
authnone_refresh(AUTH * auth attribute_unused)132 authnone_refresh (AUTH *auth attribute_unused)
133 {
134 return FALSE;
135 }
136
137 static void
authnone_destroy(AUTH * auth attribute_unused)138 authnone_destroy (AUTH *auth attribute_unused)
139 {
140 }
141