1 /* $NetBSD: auth.h,v 1.15 2000/06/02 22:57:55 fvdl Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (c) 2009, Sun Microsystems, Inc. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions are met: 11 * - Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above copyright notice, 14 * this list of conditions and the following disclaimer in the documentation 15 * and/or other materials provided with the distribution. 16 * - Neither the name of Sun Microsystems, Inc. nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 * from: @(#)auth.h 1.17 88/02/08 SMI 33 * from: @(#)auth.h 2.3 88/08/07 4.0 RPCSRC 34 * from: @(#)auth.h 1.43 98/02/02 SMI 35 * $FreeBSD$ 36 */ 37 38 /* 39 * auth.h, Authentication interface. 40 * 41 * Copyright (C) 1984, Sun Microsystems, Inc. 42 * 43 * The data structures are completely opaque to the client. The client 44 * is required to pass an AUTH * to routines that create rpc 45 * "sessions". 46 */ 47 48 #ifndef _RPC_AUTH_H 49 #define _RPC_AUTH_H 50 #include <rpc/xdr.h> 51 #include <rpc/clnt_stat.h> 52 #include <sys/cdefs.h> 53 #include <sys/socket.h> 54 55 #define MAX_AUTH_BYTES 400 56 #define MAXNETNAMELEN 255 /* maximum length of network user's name */ 57 58 /* 59 * Client side authentication/security data 60 */ 61 62 typedef struct sec_data { 63 u_int secmod; /* security mode number e.g. in nfssec.conf */ 64 u_int rpcflavor; /* rpc flavors:AUTH_UNIX,AUTH_DES,RPCSEC_GSS */ 65 int flags; /* AUTH_F_xxx flags */ 66 caddr_t data; /* opaque data per flavor */ 67 } sec_data_t; 68 69 #ifdef _SYSCALL32_IMPL 70 struct sec_data32 { 71 uint32_t secmod; /* security mode number e.g. in nfssec.conf */ 72 uint32_t rpcflavor; /* rpc flavors:AUTH_UNIX,AUTH_DES,RPCSEC_GSS */ 73 int32_t flags; /* AUTH_F_xxx flags */ 74 caddr32_t data; /* opaque data per flavor */ 75 }; 76 #endif /* _SYSCALL32_IMPL */ 77 78 /* 79 * AUTH_DES flavor specific data from sec_data opaque data field. 80 * AUTH_KERB has the same structure. 81 */ 82 typedef struct des_clnt_data { 83 struct netbuf syncaddr; /* time sync addr */ 84 struct knetconfig *knconf; /* knetconfig info that associated */ 85 /* with the syncaddr. */ 86 char *netname; /* server's netname */ 87 int netnamelen; /* server's netname len */ 88 } dh_k4_clntdata_t; 89 90 #ifdef _SYSCALL32_IMPL 91 struct des_clnt_data32 { 92 struct netbuf32 syncaddr; /* time sync addr */ 93 caddr32_t knconf; /* knetconfig info that associated */ 94 /* with the syncaddr. */ 95 caddr32_t netname; /* server's netname */ 96 int32_t netnamelen; /* server's netname len */ 97 }; 98 #endif /* _SYSCALL32_IMPL */ 99 100 #ifdef KERBEROS 101 /* 102 * flavor specific data to hold the data for AUTH_DES/AUTH_KERB(v4) 103 * in sec_data->data opaque field. 104 */ 105 typedef struct krb4_svc_data { 106 int window; /* window option value */ 107 } krb4_svcdata_t; 108 109 typedef struct krb4_svc_data des_svcdata_t; 110 #endif /* KERBEROS */ 111 112 /* 113 * authentication/security specific flags 114 */ 115 #define AUTH_F_RPCTIMESYNC 0x001 /* use RPC to do time sync */ 116 #define AUTH_F_TRYNONE 0x002 /* allow fall back to AUTH_NONE */ 117 118 119 /* 120 * Status returned from authentication check 121 */ 122 enum auth_stat { 123 AUTH_OK=0, 124 /* 125 * failed at remote end 126 */ 127 AUTH_BADCRED=1, /* bogus credentials (seal broken) */ 128 AUTH_REJECTEDCRED=2, /* client should begin new session */ 129 AUTH_BADVERF=3, /* bogus verifier (seal broken) */ 130 AUTH_REJECTEDVERF=4, /* verifier expired or was replayed */ 131 AUTH_TOOWEAK=5, /* rejected due to security reasons */ 132 /* 133 * failed locally 134 */ 135 AUTH_INVALIDRESP=6, /* bogus response verifier */ 136 AUTH_FAILED=7, /* some unknown reason */ 137 #ifdef KERBEROS 138 /* 139 * kerberos errors 140 */ 141 , 142 AUTH_KERB_GENERIC = 8, /* kerberos generic error */ 143 AUTH_TIMEEXPIRE = 9, /* time of credential expired */ 144 AUTH_TKT_FILE = 10, /* something wrong with ticket file */ 145 AUTH_DECODE = 11, /* can't decode authenticator */ 146 AUTH_NET_ADDR = 12, /* wrong net address in ticket */ 147 #endif /* KERBEROS */ 148 /* 149 * RPCSEC_GSS errors 150 */ 151 RPCSEC_GSS_CREDPROBLEM = 13, 152 RPCSEC_GSS_CTXPROBLEM = 14, 153 RPCSEC_GSS_NODISPATCH = 0x8000000 154 }; 155 156 union des_block { 157 struct { 158 uint32_t high; 159 uint32_t low; 160 } key; 161 char c[8]; 162 }; 163 typedef union des_block des_block; 164 __BEGIN_DECLS 165 extern bool_t xdr_des_block(XDR *, des_block *); 166 __END_DECLS 167 168 /* 169 * Authentication info. Opaque to client. 170 */ 171 struct opaque_auth { 172 enum_t oa_flavor; /* flavor of auth */ 173 caddr_t oa_base; /* address of more auth stuff */ 174 u_int oa_length; /* not to exceed MAX_AUTH_BYTES */ 175 }; 176 177 178 /* 179 * Auth handle, interface to client side authenticators. 180 */ 181 struct rpc_err; 182 typedef struct __auth { 183 struct opaque_auth ah_cred; 184 struct opaque_auth ah_verf; 185 union des_block ah_key; 186 struct auth_ops { 187 void (*ah_nextverf) (struct __auth *); 188 /* nextverf & serialize */ 189 int (*ah_marshal) (struct __auth *, uint32_t, XDR *, 190 struct mbuf *); 191 /* validate verifier */ 192 int (*ah_validate) (struct __auth *, uint32_t, 193 struct opaque_auth *, struct mbuf **); 194 /* refresh credentials */ 195 int (*ah_refresh) (struct __auth *, void *); 196 /* destroy this structure */ 197 void (*ah_destroy) (struct __auth *); 198 } *ah_ops; 199 void *ah_private; 200 } AUTH; 201 202 203 /* 204 * Authentication ops. 205 * The ops and the auth handle provide the interface to the authenticators. 206 * 207 * AUTH *auth; 208 * XDR *xdrs; 209 * struct opaque_auth verf; 210 */ 211 #define AUTH_NEXTVERF(auth) \ 212 ((*((auth)->ah_ops->ah_nextverf))(auth)) 213 214 #define AUTH_MARSHALL(auth, xid, xdrs, args) \ 215 ((*((auth)->ah_ops->ah_marshal))(auth, xid, xdrs, args)) 216 217 #define AUTH_VALIDATE(auth, xid, verfp, resultsp) \ 218 ((*((auth)->ah_ops->ah_validate))((auth), xid, verfp, resultsp)) 219 220 #define AUTH_REFRESH(auth, msg) \ 221 ((*((auth)->ah_ops->ah_refresh))(auth, msg)) 222 223 #define AUTH_DESTROY(auth) \ 224 ((*((auth)->ah_ops->ah_destroy))(auth)) 225 226 __BEGIN_DECLS 227 extern struct opaque_auth _null_auth; 228 __END_DECLS 229 230 /* 231 * These are the various implementations of client side authenticators. 232 */ 233 234 /* 235 * System style authentication 236 * AUTH *authunix_create(machname, uid, gid, len, aup_gids) 237 * char *machname; 238 * u_int uid; 239 * u_int gid; 240 * int len; 241 * u_int *aup_gids; 242 */ 243 __BEGIN_DECLS 244 #ifdef _KERNEL 245 struct ucred; 246 extern AUTH *authunix_create(struct ucred *); 247 #else 248 extern AUTH *authunix_create(char *, u_int, u_int, int, u_int *); 249 extern AUTH *authunix_create_default(void); /* takes no parameters */ 250 #endif 251 extern AUTH *authnone_create(void); /* takes no parameters */ 252 __END_DECLS 253 /* 254 * DES style authentication 255 * AUTH *authsecdes_create(servername, window, timehost, ckey) 256 * char *servername; - network name of server 257 * u_int window; - time to live 258 * const char *timehost; - optional hostname to sync with 259 * des_block *ckey; - optional conversation key to use 260 */ 261 __BEGIN_DECLS 262 extern AUTH *authdes_create (char *, u_int, struct sockaddr *, des_block *); 263 extern AUTH *authdes_seccreate (const char *, const u_int, const char *, 264 const des_block *); 265 __END_DECLS 266 267 __BEGIN_DECLS 268 extern bool_t xdr_opaque_auth (XDR *, struct opaque_auth *); 269 __END_DECLS 270 271 #define authsys_create(c,i1,i2,i3,ip) authunix_create((c),(i1),(i2),(i3),(ip)) 272 #define authsys_create_default() authunix_create_default() 273 274 /* 275 * Netname manipulation routines. 276 */ 277 __BEGIN_DECLS 278 extern int getnetname(char *); 279 extern int host2netname(char *, const char *, const char *); 280 extern int user2netname(char *, const uid_t, const char *); 281 extern int netname2user(char *, uid_t *, gid_t *, int *, gid_t *); 282 extern int netname2host(char *, char *, const int); 283 extern void passwd2des ( char *, char * ); 284 __END_DECLS 285 286 /* 287 * 288 * These routines interface to the keyserv daemon 289 * 290 */ 291 __BEGIN_DECLS 292 extern int key_decryptsession(const char *, des_block *); 293 extern int key_encryptsession(const char *, des_block *); 294 extern int key_gendes(des_block *); 295 extern int key_setsecret(const char *); 296 extern int key_secretkey_is_set(void); 297 __END_DECLS 298 299 /* 300 * Publickey routines. 301 */ 302 __BEGIN_DECLS 303 extern int getpublickey (const char *, char *); 304 extern int getpublicandprivatekey (const char *, char *); 305 extern int getsecretkey (char *, char *, char *); 306 __END_DECLS 307 308 #ifdef KERBEROS 309 /* 310 * Kerberos style authentication 311 * AUTH *authkerb_seccreate(service, srv_inst, realm, window, timehost, status) 312 * const char *service; - service name 313 * const char *srv_inst; - server instance 314 * const char *realm; - server realm 315 * const u_int window; - time to live 316 * const char *timehost; - optional hostname to sync with 317 * int *status; - kerberos status returned 318 */ 319 __BEGIN_DECLS 320 extern AUTH *authkerb_seccreate(const char *, const char *, const char *, 321 const u_int, const char *, int *); 322 __END_DECLS 323 324 /* 325 * Map a kerberos credential into a unix cred. 326 * 327 * authkerb_getucred(rqst, uid, gid, grouplen, groups) 328 * const struct svc_req *rqst; - request pointer 329 * uid_t *uid; 330 * gid_t *gid; 331 * short *grouplen; 332 * int *groups; 333 * 334 */ 335 __BEGIN_DECLS 336 extern int authkerb_getucred(/* struct svc_req *, uid_t *, gid_t *, 337 short *, int * */); 338 __END_DECLS 339 #endif /* KERBEROS */ 340 341 __BEGIN_DECLS 342 struct svc_req; 343 struct rpc_msg; 344 enum auth_stat _svcauth_null (struct svc_req *, struct rpc_msg *); 345 enum auth_stat _svcauth_short (struct svc_req *, struct rpc_msg *); 346 enum auth_stat _svcauth_unix (struct svc_req *, struct rpc_msg *); 347 __END_DECLS 348 349 #define AUTH_NONE 0 /* no authentication */ 350 #define AUTH_NULL 0 /* backward compatibility */ 351 #define AUTH_SYS 1 /* unix style (uid, gids) */ 352 #define AUTH_UNIX AUTH_SYS 353 #define AUTH_SHORT 2 /* short hand unix style */ 354 #define AUTH_DH 3 /* for Diffie-Hellman mechanism */ 355 #define AUTH_DES AUTH_DH /* for backward compatibility */ 356 #define AUTH_KERB 4 /* kerberos style */ 357 #define RPCSEC_GSS 6 /* RPCSEC_GSS */ 358 359 /* 360 * Pseudo auth flavors for RPCSEC_GSS. 361 */ 362 #define RPCSEC_GSS_KRB5 390003 363 #define RPCSEC_GSS_KRB5I 390004 364 #define RPCSEC_GSS_KRB5P 390005 365 366 #endif /* !_RPC_AUTH_H */ 367