/*
* 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 */