1/*	$NetBSD: auth.h,v 1.16 2005/02/03 04:39:32 perry 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	u_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 *, u_int,
173					    struct sockaddr_in *, des_block *);
174extern bool_t xdr_opaque_auth		(XDR *, struct opaque_auth *);
175
176#define authsys_create(c,i1,i2,i3,ip) authunix_create((c),(i1),(i2),(i3),(ip))
177#define authsys_create_default() authunix_create_default()
178
179struct svc_req;
180struct rpc_msg;
181enum auth_stat _svcauth_null(struct svc_req *, struct rpc_msg *);
182enum auth_stat _svcauth_short(struct svc_req *, struct rpc_msg *);
183enum auth_stat _svcauth_unix(struct svc_req *, struct rpc_msg *);
184__END_DECLS
185
186#define AUTH_NONE	0		/* no authentication */
187#define	AUTH_NULL	0		/* backward compatibility */
188#define	AUTH_SYS	1		/* unix style (uid, gids) */
189#define AUTH_UNIX	AUTH_SYS	/* backward compatibility */
190#define	AUTH_SHORT	2		/* short hand unix style */
191#define AUTH_DES	3		/* des style (encrypted timestamps) */
192
193#endif /* !_RPC_AUTH_H_ */
194