1/* $NetBSD: auth.h,v 1.20 2020/10/03 18:30:39 christos Exp $ */
2
3/*
4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
5 * unrestricted use provided that this legend is included on all tape
6 * media and as a part of the software program in whole or part. Users
7 * may copy or modify Sun RPC without charge, but are not authorized
8 * to license or distribute it to anyone else except as part of a product or
9 * program developed by the user.
10 *
11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 *
15 * Sun RPC is provided with no support and without any obligation on the
16 * part of Sun Microsystems, Inc. to assist in its use, correction,
17 * modification or enhancement.
18 *
19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
21 * OR ANY PART THEREOF.
22 *
23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
24 * or profits or other special, indirect and consequential damages, even if
25 * Sun has been advised of the possibility of such damages.
26 *
27 * Sun Microsystems, Inc.
28 * 2550 Garcia Avenue
29 * Mountain View, California 94043
30 *
31 * from: @(#)auth.h 1.17 88/02/08 SMI
32 * @(#)auth.h 2.3 88/08/07 4.0 RPCSRC
33 */
34
35/*
36 * auth.h, Authentication interface.
37 *
38 * Copyright (C) 1984, Sun Microsystems, Inc.
39 *
40 * The data structures are completely opaque to the client. The client
41 * is required to pass a AUTH * to routines that create rpc
42 * "sessions".
43 */
44
45#ifndef _RPC_AUTH_H_
46#define _RPC_AUTH_H_
47#include <sys/cdefs.h>
48
49#define MAX_AUTH_BYTES 400
50#define MAXNETNAMELEN 255 /* maximum length of network user's name */
51
52/*
53 * Status returned from authentication check
54 */
55enum auth_stat {
56 AUTH_OK=0,
57 /*
58 * failed at remote end
59 */
60 AUTH_BADCRED=1, /* bogus credentials (seal broken) */
61 AUTH_REJECTEDCRED=2, /* client should begin new session */
62 AUTH_BADVERF=3, /* bogus verifier (seal broken) */
63 AUTH_REJECTEDVERF=4, /* verifier expired or was replayed */
64 AUTH_TOOWEAK=5, /* rejected due to security reasons */
65 /*
66 * failed locally
67 */
68 AUTH_INVALIDRESP=6, /* bogus response verifier */
69 AUTH_FAILED=7 /* some unknown reason */
70};
71
72union des_block {
73 struct {
74 uint32_t high;
75 uint32_t low;
76 } key;
77 char c[8];
78};
79typedef union des_block des_block;
80__BEGIN_DECLS
81extern bool_t xdr_des_block(XDR *, des_block *);
82__END_DECLS
83
84/*
85 * Authentication info. Opaque to client.
86 */
87struct opaque_auth {
88 enum_t oa_flavor; /* flavor of auth */
89 caddr_t oa_base; /* address of more auth stuff */
90 unsigned int oa_length; /* not to exceed MAX_AUTH_BYTES */
91};
92
93
94/*
95 * Auth handle, interface to client side authenticators.
96 */
97typedef struct __rpc_auth {
98 struct opaque_auth ah_cred;
99 struct opaque_auth ah_verf;
100 union des_block ah_key;
101 const struct auth_ops {
102 void (*ah_nextverf)(struct __rpc_auth *);
103 /* nextverf & serialize */
104 int (*ah_marshal)(struct __rpc_auth *, XDR *);
105 /* validate varifier */
106 int (*ah_validate)(struct __rpc_auth *,
107 struct opaque_auth *);
108 /* refresh credentials */
109 int (*ah_refresh)(struct __rpc_auth *);
110 /* destroy this structure */
111 void (*ah_destroy)(struct __rpc_auth *);
112 } *ah_ops;
113 void *ah_private;
114} AUTH;
115
116
117/*
118 * Authentication ops.
119 * The ops and the auth handle provide the interface to the authenticators.
120 *
121 * AUTH *auth;
122 * XDR *xdrs;
123 * struct opaque_auth verf;
124 */
125#define AUTH_NEXTVERF(auth) \
126 ((*((auth)->ah_ops->ah_nextverf))(auth))
127#define auth_nextverf(auth) \
128 ((*((auth)->ah_ops->ah_nextverf))(auth))
129
130#define AUTH_MARSHALL(auth, xdrs) \
131 ((*((auth)->ah_ops->ah_marshal))(auth, xdrs))
132#define auth_marshall(auth, xdrs) \
133 ((*((auth)->ah_ops->ah_marshal))(auth, xdrs))
134
135#define AUTH_VALIDATE(auth, verfp) \
136 ((*((auth)->ah_ops->ah_validate))((auth), verfp))
137#define auth_validate(auth, verfp) \
138 ((*((auth)->ah_ops->ah_validate))((auth), verfp))
139
140#define AUTH_REFRESH(auth) \
141 ((*((auth)->ah_ops->ah_refresh))(auth))
142#define auth_refresh(auth) \
143 ((*((auth)->ah_ops->ah_refresh))(auth))
144
145#define AUTH_DESTROY(auth) \
146 ((*((auth)->ah_ops->ah_destroy))(auth))
147#define auth_destroy(auth) \
148 ((*((auth)->ah_ops->ah_destroy))(auth))
149
150
151extern struct opaque_auth _null_auth;
152
153
154/*
155 * These are the various implementations of client side authenticators.
156 */
157
158/*
159 * Unix style authentication
160 * AUTH *authunix_create(machname, uid, gid, len, aup_gids)
161 * char *machname;
162 * int uid;
163 * int gid;
164 * int len;
165 * int *aup_gids;
166 */
167__BEGIN_DECLS
168struct sockaddr_in;
169extern AUTH *authunix_create (char *, int, int, int, int *);
170extern AUTH *authunix_create_default (void);
171extern AUTH *authnone_create (void);
172extern AUTH *authdes_create (char *, unsigned int,
173 struct sockaddr_in *, des_block *);
174extern bool_t xdr_opaque_auth (XDR *, struct opaque_auth *);
175extern void set_rpc_maxgrouplist (int);
176
177#define authsys_create(c,i1,i2,i3,ip) authunix_create((c),(i1),(i2),(i3),(ip))
178#define authsys_create_default() authunix_create_default()
179
180struct svc_req;
181struct rpc_msg;
182enum auth_stat _svcauth_null(struct svc_req *, struct rpc_msg *);
183enum auth_stat _svcauth_short(struct svc_req *, struct rpc_msg *);
184enum auth_stat _svcauth_unix(struct svc_req *, struct rpc_msg *);
185__END_DECLS
186
187#define AUTH_NONE 0 /* no authentication */
188#define AUTH_NULL 0 /* backward compatibility */
189#define AUTH_SYS 1 /* unix style (uid, gids) */
190#define AUTH_UNIX AUTH_SYS /* backward compatibility */
191#define AUTH_SHORT 2 /* short hand unix style */
192#define AUTH_DES 3 /* des style (encrypted timestamps) */
193
194#endif /* !_RPC_AUTH_H_ */