summaryrefslogtreecommitdiffstats
path: root/sys/rpc/auth.h
blob: 6be08b62560123e2de346e5b9b2b0e6274081427 (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
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
/*	$NetBSD: auth.h,v 1.15 2000/06/02 22:57:55 fvdl Exp $	*/

/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user.
 *
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 *
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 *
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 *
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 *
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 *
 *	from: @(#)auth.h 1.17 88/02/08 SMI
 *	from: @(#)auth.h	2.3 88/08/07 4.0 RPCSRC
 *	from: @(#)auth.h	1.43 	98/02/02 SMI
 * $FreeBSD$
 */

/*
 * auth.h, Authentication interface.
 *
 * Copyright (C) 1984, Sun Microsystems, Inc.
 *
 * The data structures are completely opaque to the client.  The client
 * is required to pass an AUTH * to routines that create rpc
 * "sessions".
 */

#ifndef _RPC_AUTH_H
#define _RPC_AUTH_H
#include <rpc/xdr.h>
#include <rpc/clnt_stat.h>
#include <sys/cdefs.h>
#include <sys/socket.h>

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

/*
 *  Client side authentication/security data
 */

typedef struct sec_data {
	u_int	secmod;		/* security mode number e.g. in nfssec.conf */
	u_int	rpcflavor;	/* rpc flavors:AUTH_UNIX,AUTH_DES,RPCSEC_GSS */
	int	flags;		/* AUTH_F_xxx flags */
	caddr_t data;		/* opaque data per flavor */
} sec_data_t;

#ifdef _SYSCALL32_IMPL
struct sec_data32 {
	uint32_t secmod;	/* security mode number e.g. in nfssec.conf */
	uint32_t rpcflavor;	/* rpc flavors:AUTH_UNIX,AUTH_DES,RPCSEC_GSS */
	int32_t flags;		/* AUTH_F_xxx flags */
	caddr32_t data;		/* opaque data per flavor */
};
#endif /* _SYSCALL32_IMPL */

/*
 * AUTH_DES flavor specific data from sec_data opaque data field.
 * AUTH_KERB has the same structure.
 */
typedef struct des_clnt_data {
	struct netbuf	syncaddr;	/* time sync addr */
	struct knetconfig *knconf;	/* knetconfig info that associated */
					/* with the syncaddr. */
	char		*netname;	/* server's netname */
	int		netnamelen;	/* server's netname len */
} dh_k4_clntdata_t;

#ifdef _SYSCALL32_IMPL
struct des_clnt_data32 {
	struct netbuf32 syncaddr;	/* time sync addr */
	caddr32_t knconf;		/* knetconfig info that associated */
					/* with the syncaddr. */
	caddr32_t netname;		/* server's netname */
	int32_t netnamelen;		/* server's netname len */
};
#endif /* _SYSCALL32_IMPL */

#ifdef KERBEROS
/*
 * flavor specific data to hold the data for AUTH_DES/AUTH_KERB(v4)
 * in sec_data->data opaque field.
 */
typedef struct krb4_svc_data {
	int		window;		/* window option value */
} krb4_svcdata_t;
 
typedef struct krb4_svc_data	des_svcdata_t;
#endif /* KERBEROS */

/*
 * authentication/security specific flags
 */
#define AUTH_F_RPCTIMESYNC	0x001	/* use RPC to do time sync */
#define AUTH_F_TRYNONE		0x002	/* allow fall back to AUTH_NONE */


/*
 * 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 */
#ifdef KERBEROS
	/*
	 * kerberos errors
	 */
	,
	AUTH_KERB_GENERIC = 8,		/* kerberos generic error */
	AUTH_TIMEEXPIRE = 9,		/* time of credential expired */
	AUTH_TKT_FILE = 10,		/* something wrong with ticket file */
	AUTH_DECODE = 11,			/* can't decode authenticator */
	AUTH_NET_ADDR = 12,		/* wrong net address in ticket */
#endif /* KERBEROS */
	/*
	 * RPCSEC_GSS errors
	 */
	RPCSEC_GSS_CREDPROBLEM = 13,
	RPCSEC_GSS_CTXPROBLEM = 14,
	RPCSEC_GSS_NODISPATCH = 0x8000000
};

union des_block {
	struct {
		uint32_t high;
		uint32_t low;
	} key;
	char c[8];
};
typedef union des_block des_block;
__BEGIN_DECLS
extern bool_t xdr_des_block(XDR *, des_block *);
__END_DECLS

/*
 * 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.
 */
struct rpc_err;
typedef struct __auth {
	struct	opaque_auth	ah_cred;
	struct	opaque_auth	ah_verf;
	union	des_block	ah_key;
	struct auth_ops {
		void	(*ah_nextverf) (struct __auth *);
		/* nextverf & serialize */
		int	(*ah_marshal) (struct __auth *, uint32_t, XDR *,
		    struct mbuf *);
		/* validate verifier */
		int	(*ah_validate) (struct __auth *, uint32_t,
		    struct opaque_auth *, struct mbuf **);
		/* refresh credentials */
		int	(*ah_refresh) (struct __auth *, void *);
		/* destroy this structure */
		void	(*ah_destroy) (struct __auth *);
	} *ah_ops;
	void *ah_private;
} AUTH;


/*
 * 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_MARSHALL(auth, xid, xdrs, args)	\
		((*((auth)->ah_ops->ah_marshal))(auth, xid, xdrs, args))

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

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

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

__BEGIN_DECLS
extern struct opaque_auth _null_auth;
__END_DECLS

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

/*
 * System style authentication
 * AUTH *authunix_create(machname, uid, gid, len, aup_gids)
 *	char *machname;
 *	int uid;
 *	int gid;
 *	int len;
 *	int *aup_gids;
 */
__BEGIN_DECLS
#ifdef _KERNEL
struct ucred;
extern AUTH *authunix_create(struct ucred *);
#else
extern AUTH *authunix_create(char *, int, int, int,
    int *);
extern AUTH *authunix_create_default(void);	/* takes no parameters */
#endif
extern AUTH *authnone_create(void);		/* takes no parameters */
__END_DECLS
/*
 * DES style authentication
 * AUTH *authsecdes_create(servername, window, timehost, ckey)
 * 	char *servername;		- network name of server
 *	u_int window;			- time to live
 * 	const char *timehost;			- optional hostname to sync with
 * 	des_block *ckey;		- optional conversation key to use
 */
__BEGIN_DECLS
extern AUTH *authdes_create (char *, u_int, struct sockaddr *, des_block *);
extern AUTH *authdes_seccreate (const char *, const u_int, const  char *,
    const  des_block *);
__END_DECLS

__BEGIN_DECLS
extern bool_t xdr_opaque_auth		(XDR *, struct opaque_auth *);
__END_DECLS

#define authsys_create(c,i1,i2,i3,ip) authunix_create((c),(i1),(i2),(i3),(ip))
#define authsys_create_default() authunix_create_default()

/*
 * Netname manipulation routines.
 */
__BEGIN_DECLS
extern int getnetname(char *);
extern int host2netname(char *, const char *, const char *);
extern int user2netname(char *, const uid_t, const char *);
extern int netname2user(char *, uid_t *, gid_t *, int *, gid_t *);
extern int netname2host(char *, char *, const int);
extern void passwd2des ( char *, char * );
__END_DECLS

/*
 *
 * These routines interface to the keyserv daemon
 *
 */
__BEGIN_DECLS
extern int key_decryptsession(const char *, des_block *);
extern int key_encryptsession(const char *, des_block *);
extern int key_gendes(des_block *);
extern int key_setsecret(const char *);
extern int key_secretkey_is_set(void);
__END_DECLS

/*
 * Publickey routines.
 */
__BEGIN_DECLS
extern int getpublickey (const char *, char *);
extern int getpublicandprivatekey (const char *, char *);
extern int getsecretkey (char *, char *, char *);
__END_DECLS

#ifdef KERBEROS
/*
 * Kerberos style authentication
 * AUTH *authkerb_seccreate(service, srv_inst, realm, window, timehost, status)
 *	const char *service;			- service name
 *	const char *srv_inst;			- server instance
 *	const char *realm;			- server realm
 *	const u_int window;			- time to live
 *	const char *timehost;			- optional hostname to sync with
 *	int *status;				- kerberos status returned
 */
__BEGIN_DECLS
extern AUTH	*authkerb_seccreate(const char *, const char *, const  char *,
		    const u_int, const char *, int *);
__END_DECLS

/*
 * Map a kerberos credential into a unix cred.
 *
 *	authkerb_getucred(rqst, uid, gid, grouplen, groups)
 *	const struct svc_req *rqst;		- request pointer
 *	uid_t *uid;
 *	gid_t *gid;
 *	short *grouplen;
 *	int *groups;
 *
 */
__BEGIN_DECLS
extern int	authkerb_getucred(/* struct svc_req *, uid_t *, gid_t *,
		    short *, int * */);
__END_DECLS
#endif /* KERBEROS */

__BEGIN_DECLS
struct svc_req;
struct rpc_msg;
enum auth_stat _svcauth_null (struct svc_req *, struct rpc_msg *);
enum auth_stat _svcauth_short (struct svc_req *, struct rpc_msg *);
enum auth_stat _svcauth_unix (struct svc_req *, struct rpc_msg *);
__END_DECLS

#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_DH		3		/* for Diffie-Hellman mechanism */
#define AUTH_DES	AUTH_DH		/* for backward compatibility */
#define AUTH_KERB	4		/* kerberos style */
#define RPCSEC_GSS	6		/* RPCSEC_GSS */

/*
 * Pseudo auth flavors for RPCSEC_GSS.
 */
#define	RPCSEC_GSS_KRB5		390003
#define	RPCSEC_GSS_KRB5I	390004
#define	RPCSEC_GSS_KRB5P	390005

#endif /* !_RPC_AUTH_H */
OpenPOWER on IntegriCloud