aboutsummaryrefslogtreecommitdiff
path: root/sunrpc/rpc/auth.h
blob: d0bee510cc3a3869137b22865eb3f7095364bc9d (plain)
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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
/*
 * auth.h, Authentication interface.
 *
 * 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.
 *
 * The data structures are completely opaque to the client.  The client
 * is required to pass a AUTH * to routines that create rpc
 * "sessions".
 */

#ifndef _RPC_AUTH_H

#define _RPC_AUTH_H	1
#include <features.h>
#include <rpc/xdr.h>

__BEGIN_DECLS

#define MAX_AUTH_BYTES	400
#define MAXNETNAMELEN	255	/* maximum length of network user's name */

/*
 * Status returned from authentication check
 */
enum auth_stat {
	AUTH_OK=0,
	/*
	 * failed at remote end
	 */
	AUTH_BADCRED=1,			/* bogus credentials (seal broken) */
	AUTH_REJECTEDCRED=2,		/* client should begin new session */
	AUTH_BADVERF=3,			/* bogus verifier (seal broken) */
	AUTH_REJECTEDVERF=4,		/* verifier expired or was replayed */
	AUTH_TOOWEAK=5,			/* rejected due to security reasons */
	/*
	 * failed locally
	*/
	AUTH_INVALIDRESP=6,		/* bogus response verifier */
	AUTH_FAILED=7			/* some unknown reason */
};

union des_block {
	struct {
		u_int32_t high;
		u_int32_t low;
	} key;
	char c[8];
};
typedef union des_block des_block;
extern bool_t xdr_des_block (XDR *__xdrs, des_block *__blkp) __THROW;

/*
 * Authentication info.  Opaque to client.
 */
struct opaque_auth {
	enum_t	oa_flavor;		/* flavor of auth */
	caddr_t	oa_base;		/* address of more auth stuff */
	u_int	oa_length;		/* not to exceed MAX_AUTH_BYTES */
};

/*
 * Auth handle, interface to client side authenticators.
 */
typedef struct AUTH AUTH;
struct AUTH {
  struct opaque_auth ah_cred;
  struct opaque_auth ah_verf;
  union des_block ah_key;
  struct auth_ops {
    void (*ah_nextverf) (AUTH *);
    int  (*ah_marshal) (AUTH *, XDR *);		/* nextverf & serialize */
    int  (*ah_validate) (AUTH *, struct opaque_auth *);
						/* validate verifier */
    int  (*ah_refresh) (AUTH *);		/* refresh credentials */
    void (*ah_destroy) (AUTH *); 	    	/* destroy this structure */
  } *ah_ops;
  caddr_t ah_private;
};


/*
 * Authentication ops.
 * The ops and the auth handle provide the interface to the authenticators.
 *
 * AUTH	*auth;
 * XDR	*xdrs;
 * struct opaque_auth verf;
 */
#define AUTH_NEXTVERF(auth)		\
		((*((auth)->ah_ops->ah_nextverf))(auth))
#define auth_nextverf(auth)		\
		((*((auth)->ah_ops->ah_nextverf))(auth))

#define AUTH_MARSHALL(auth, xdrs)	\
		((*((auth)->ah_ops->ah_marshal))(auth, xdrs))
#define auth_marshall(auth, xdrs)	\
		((*((auth)->ah_ops->ah_marshal))(auth, xdrs))

#define AUTH_VALIDATE(auth, verfp)	\
		((*((auth)->ah_ops->ah_validate))((auth), verfp))
#define auth_validate(auth, verfp)	\
		((*((auth)->ah_ops->ah_validate))((auth), verfp))

#define AUTH_REFRESH(auth)		\
		((*((auth)->ah_ops->ah_refresh))(auth))
#define auth_refresh(auth)		\
		((*((auth)->ah_ops->ah_refresh))(auth))

#define AUTH_DESTROY(auth)		\
		((*((auth)->ah_ops->ah_destroy))(auth))
#define auth_destroy(auth)		\
		((*((auth)->ah_ops->ah_destroy))(auth))


extern struct opaque_auth _null_auth;


/*
 * These are the various implementations of client side authenticators.
 */

/*
 * Unix style authentication
 * AUTH *authunix_create(machname, uid, gid, len, aup_gids)
 *	char *machname;
 *	int uid;
 *	int gid;
 *	int len;
 *	int *aup_gids;
 */
extern AUTH *authunix_create (char *__machname, __uid_t __uid, __gid_t __gid,
			      int __len, __gid_t *__aup_gids);
extern AUTH *authunix_create_default (void);
extern AUTH *authnone_create (void) __THROW;
extern AUTH *authdes_create (const char *__servername, u_int __window,
			     struct sockaddr *__syncaddr, des_block *__ckey)
     __THROW;
extern AUTH *authdes_pk_create (const char *, netobj *, u_int,
				struct sockaddr *, des_block *) __THROW;


#define AUTH_NONE	0		/* no authentication */
#define	AUTH_NULL	0		/* backward compatibility */
#define	AUTH_SYS	1		/* unix style (uid, gids) */
#define	AUTH_UNIX	AUTH_SYS
#define	AUTH_SHORT	2		/* short hand unix style */
#define AUTH_DES	3		/* des style (encrypted timestamps) */
#define AUTH_DH		AUTH_DES	/* Diffie-Hellman (this is DES) */
#define AUTH_KERB       4               /* kerberos style */

/*
 *  Netname manipulating functions
 *
 */
extern int getnetname (char *) __THROW;
extern int host2netname (char *, __const char *, __const char *) __THROW;
extern int user2netname (char *, __const uid_t, __const char *) __THROW;
extern int netname2user (__const char *, uid_t *, gid_t *, int *, gid_t *)
     __THROW;
extern int netname2host (__const char *, char *, __const int) __THROW;

/*
 *
 * These routines interface to the keyserv daemon
 *
 */
extern int key_decryptsession (char *, des_block *);
extern int key_decryptsession_pk (char *, netobj *, des_block *);
extern int key_encryptsession (char *, des_block *);
extern int key_encryptsession_pk (char *, netobj *, des_block *);
extern int key_gendes (des_block *);
extern int key_setsecret (char *);
extern int key_secretkey_is_set (void);
extern int key_get_conv (char *, des_block *);

/*
 * XDR an opaque authentication struct.
 */
extern bool_t xdr_opaque_auth (XDR *, struct opaque_auth *) __THROW;

__END_DECLS

#endif /* rpc/auth.h */