FreeBSD/Linux Kernel Cross Reference
sys/rpc/auth.h
1 /* $NetBSD: auth.h,v 1.15 2000/06/02 22:57:55 fvdl 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, MERCHANTABILITY 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 * from: @(#)auth.h 2.3 88/08/07 4.0 RPCSRC
33 * from: @(#)auth.h 1.43 98/02/02 SMI
34 * $FreeBSD$
35 */
36
37 /*
38 * auth.h, Authentication interface.
39 *
40 * Copyright (C) 1984, Sun Microsystems, Inc.
41 *
42 * The data structures are completely opaque to the client. The client
43 * is required to pass an AUTH * to routines that create rpc
44 * "sessions".
45 */
46
47 #ifndef _RPC_AUTH_H
48 #define _RPC_AUTH_H
49 #include <rpc/xdr.h>
50 #include <rpc/clnt_stat.h>
51 #include <sys/cdefs.h>
52 #include <sys/socket.h>
53
54 #define MAX_AUTH_BYTES 400
55 #define MAXNETNAMELEN 255 /* maximum length of network user's name */
56
57 /*
58 * Client side authentication/security data
59 */
60
61 typedef struct sec_data {
62 u_int secmod; /* security mode number e.g. in nfssec.conf */
63 u_int rpcflavor; /* rpc flavors:AUTH_UNIX,AUTH_DES,RPCSEC_GSS */
64 int flags; /* AUTH_F_xxx flags */
65 caddr_t data; /* opaque data per flavor */
66 } sec_data_t;
67
68 #ifdef _SYSCALL32_IMPL
69 struct sec_data32 {
70 uint32_t secmod; /* security mode number e.g. in nfssec.conf */
71 uint32_t rpcflavor; /* rpc flavors:AUTH_UNIX,AUTH_DES,RPCSEC_GSS */
72 int32_t flags; /* AUTH_F_xxx flags */
73 caddr32_t data; /* opaque data per flavor */
74 };
75 #endif /* _SYSCALL32_IMPL */
76
77 /*
78 * AUTH_DES flavor specific data from sec_data opaque data field.
79 * AUTH_KERB has the same structure.
80 */
81 typedef struct des_clnt_data {
82 struct netbuf syncaddr; /* time sync addr */
83 struct knetconfig *knconf; /* knetconfig info that associated */
84 /* with the syncaddr. */
85 char *netname; /* server's netname */
86 int netnamelen; /* server's netname len */
87 } dh_k4_clntdata_t;
88
89 #ifdef _SYSCALL32_IMPL
90 struct des_clnt_data32 {
91 struct netbuf32 syncaddr; /* time sync addr */
92 caddr32_t knconf; /* knetconfig info that associated */
93 /* with the syncaddr. */
94 caddr32_t netname; /* server's netname */
95 int32_t netnamelen; /* server's netname len */
96 };
97 #endif /* _SYSCALL32_IMPL */
98
99 #ifdef KERBEROS
100 /*
101 * flavor specific data to hold the data for AUTH_DES/AUTH_KERB(v4)
102 * in sec_data->data opaque field.
103 */
104 typedef struct krb4_svc_data {
105 int window; /* window option value */
106 } krb4_svcdata_t;
107
108 typedef struct krb4_svc_data des_svcdata_t;
109 #endif /* KERBEROS */
110
111 /*
112 * authentication/security specific flags
113 */
114 #define AUTH_F_RPCTIMESYNC 0x001 /* use RPC to do time sync */
115 #define AUTH_F_TRYNONE 0x002 /* allow fall back to AUTH_NONE */
116
117
118 /*
119 * Status returned from authentication check
120 */
121 enum auth_stat {
122 AUTH_OK=0,
123 /*
124 * failed at remote end
125 */
126 AUTH_BADCRED=1, /* bogus credentials (seal broken) */
127 AUTH_REJECTEDCRED=2, /* client should begin new session */
128 AUTH_BADVERF=3, /* bogus verifier (seal broken) */
129 AUTH_REJECTEDVERF=4, /* verifier expired or was replayed */
130 AUTH_TOOWEAK=5, /* rejected due to security reasons */
131 /*
132 * failed locally
133 */
134 AUTH_INVALIDRESP=6, /* bogus response verifier */
135 AUTH_FAILED=7 /* some unknown reason */
136 #ifdef KERBEROS
137 /*
138 * kerberos errors
139 */
140 ,
141 AUTH_KERB_GENERIC = 8, /* kerberos generic error */
142 AUTH_TIMEEXPIRE = 9, /* time of credential expired */
143 AUTH_TKT_FILE = 10, /* something wrong with ticket file */
144 AUTH_DECODE = 11, /* can't decode authenticator */
145 AUTH_NET_ADDR = 12 /* wrong net address in ticket */
146 #endif /* KERBEROS */
147 };
148
149 union des_block {
150 struct {
151 uint32_t high;
152 uint32_t low;
153 } key;
154 char c[8];
155 };
156 typedef union des_block des_block;
157 __BEGIN_DECLS
158 extern bool_t xdr_des_block(XDR *, des_block *);
159 __END_DECLS
160
161 /*
162 * Authentication info. Opaque to client.
163 */
164 struct opaque_auth {
165 enum_t oa_flavor; /* flavor of auth */
166 caddr_t oa_base; /* address of more auth stuff */
167 u_int oa_length; /* not to exceed MAX_AUTH_BYTES */
168 };
169
170
171 /*
172 * Auth handle, interface to client side authenticators.
173 */
174 typedef struct __auth {
175 struct opaque_auth ah_cred;
176 struct opaque_auth ah_verf;
177 union des_block ah_key;
178 struct auth_ops {
179 void (*ah_nextverf) (struct __auth *);
180 /* nextverf & serialize */
181 int (*ah_marshal) (struct __auth *, XDR *);
182 /* validate verifier */
183 int (*ah_validate) (struct __auth *,
184 struct opaque_auth *);
185 /* refresh credentials */
186 int (*ah_refresh) (struct __auth *, void *);
187 /* destroy this structure */
188 void (*ah_destroy) (struct __auth *);
189 } *ah_ops;
190 void *ah_private;
191 } AUTH;
192
193
194 /*
195 * Authentication ops.
196 * The ops and the auth handle provide the interface to the authenticators.
197 *
198 * AUTH *auth;
199 * XDR *xdrs;
200 * struct opaque_auth verf;
201 */
202 #define AUTH_NEXTVERF(auth) \
203 ((*((auth)->ah_ops->ah_nextverf))(auth))
204 #define auth_nextverf(auth) \
205 ((*((auth)->ah_ops->ah_nextverf))(auth))
206
207 #define AUTH_MARSHALL(auth, xdrs) \
208 ((*((auth)->ah_ops->ah_marshal))(auth, xdrs))
209 #define auth_marshall(auth, xdrs) \
210 ((*((auth)->ah_ops->ah_marshal))(auth, xdrs))
211
212 #define AUTH_VALIDATE(auth, verfp) \
213 ((*((auth)->ah_ops->ah_validate))((auth), verfp))
214 #define auth_validate(auth, verfp) \
215 ((*((auth)->ah_ops->ah_validate))((auth), verfp))
216
217 #define AUTH_REFRESH(auth, msg) \
218 ((*((auth)->ah_ops->ah_refresh))(auth, msg))
219 #define auth_refresh(auth, msg) \
220 ((*((auth)->ah_ops->ah_refresh))(auth, msg))
221
222 #define AUTH_DESTROY(auth) \
223 ((*((auth)->ah_ops->ah_destroy))(auth))
224 #define auth_destroy(auth) \
225 ((*((auth)->ah_ops->ah_destroy))(auth))
226
227
228 __BEGIN_DECLS
229 extern struct opaque_auth _null_auth;
230 __END_DECLS
231
232 /*
233 * These are the various implementations of client side authenticators.
234 */
235
236 /*
237 * System style authentication
238 * AUTH *authunix_create(machname, uid, gid, len, aup_gids)
239 * char *machname;
240 * int uid;
241 * int gid;
242 * int len;
243 * int *aup_gids;
244 */
245 __BEGIN_DECLS
246 #ifdef _KERNEL
247 struct ucred;
248 extern AUTH *authunix_create(struct ucred *);
249 #else
250 extern AUTH *authunix_create(char *, int, int, int,
251 int *);
252 extern AUTH *authunix_create_default(void); /* takes no parameters */
253 #endif
254 extern AUTH *authnone_create(void); /* takes no parameters */
255 __END_DECLS
256 /*
257 * DES style authentication
258 * AUTH *authsecdes_create(servername, window, timehost, ckey)
259 * char *servername; - network name of server
260 * u_int window; - time to live
261 * const char *timehost; - optional hostname to sync with
262 * des_block *ckey; - optional conversation key to use
263 */
264 __BEGIN_DECLS
265 extern AUTH *authdes_create (char *, u_int, struct sockaddr *, des_block *);
266 extern AUTH *authdes_seccreate (const char *, const u_int, const char *,
267 const des_block *);
268 __END_DECLS
269
270 __BEGIN_DECLS
271 extern bool_t xdr_opaque_auth (XDR *, struct opaque_auth *);
272 __END_DECLS
273
274 #define authsys_create(c,i1,i2,i3,ip) authunix_create((c),(i1),(i2),(i3),(ip))
275 #define authsys_create_default() authunix_create_default()
276
277 /*
278 * Netname manipulation routines.
279 */
280 __BEGIN_DECLS
281 extern int getnetname(char *);
282 extern int host2netname(char *, const char *, const char *);
283 extern int user2netname(char *, const uid_t, const char *);
284 extern int netname2user(char *, uid_t *, gid_t *, int *, gid_t *);
285 extern int netname2host(char *, char *, const int);
286 extern void passwd2des ( char *, char * );
287 __END_DECLS
288
289 /*
290 *
291 * These routines interface to the keyserv daemon
292 *
293 */
294 __BEGIN_DECLS
295 extern int key_decryptsession(const char *, des_block *);
296 extern int key_encryptsession(const char *, des_block *);
297 extern int key_gendes(des_block *);
298 extern int key_setsecret(const char *);
299 extern int key_secretkey_is_set(void);
300 __END_DECLS
301
302 /*
303 * Publickey routines.
304 */
305 __BEGIN_DECLS
306 extern int getpublickey (const char *, char *);
307 extern int getpublicandprivatekey (const char *, char *);
308 extern int getsecretkey (char *, char *, char *);
309 __END_DECLS
310
311 #ifdef KERBEROS
312 /*
313 * Kerberos style authentication
314 * AUTH *authkerb_seccreate(service, srv_inst, realm, window, timehost, status)
315 * const char *service; - service name
316 * const char *srv_inst; - server instance
317 * const char *realm; - server realm
318 * const u_int window; - time to live
319 * const char *timehost; - optional hostname to sync with
320 * int *status; - kerberos status returned
321 */
322 __BEGIN_DECLS
323 extern AUTH *authkerb_seccreate(const char *, const char *, const char *,
324 const u_int, const char *, int *);
325 __END_DECLS
326
327 /*
328 * Map a kerberos credential into a unix cred.
329 *
330 * authkerb_getucred(rqst, uid, gid, grouplen, groups)
331 * const struct svc_req *rqst; - request pointer
332 * uid_t *uid;
333 * gid_t *gid;
334 * short *grouplen;
335 * int *groups;
336 *
337 */
338 __BEGIN_DECLS
339 extern int authkerb_getucred(/* struct svc_req *, uid_t *, gid_t *,
340 short *, int * */);
341 __END_DECLS
342 #endif /* KERBEROS */
343
344 __BEGIN_DECLS
345 struct svc_req;
346 struct rpc_msg;
347 enum auth_stat _svcauth_null (struct svc_req *, struct rpc_msg *);
348 enum auth_stat _svcauth_short (struct svc_req *, struct rpc_msg *);
349 enum auth_stat _svcauth_unix (struct svc_req *, struct rpc_msg *);
350 __END_DECLS
351
352 #define AUTH_NONE 0 /* no authentication */
353 #define AUTH_NULL 0 /* backward compatibility */
354 #define AUTH_SYS 1 /* unix style (uid, gids) */
355 #define AUTH_UNIX AUTH_SYS
356 #define AUTH_SHORT 2 /* short hand unix style */
357 #define AUTH_DH 3 /* for Diffie-Hellman mechanism */
358 #define AUTH_DES AUTH_DH /* for backward compatibility */
359 #define AUTH_KERB 4 /* kerberos style */
360
361 #endif /* !_RPC_AUTH_H */
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