text: /*
   * 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
   *	$Id: auth.h,v 1.14 1997/08/21 19:31:04 bde Exp $
   */
  
  /*
   * 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 a AUTH * to routines that create rpc
   * "sessions".
   */
  
  #ifndef _RPC_AUTH_H
  #define _RPC_AUTH_H
  #include <sys/cdefs.h>
  #include <sys/socket.h>
  
  #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;
  __BEGIN_DECLS
  extern bool_t xdr_des_block __P((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 */
  };
  __BEGIN_DECLS
  bool_t xdr_opaque_auth __P((XDR *xdrs, struct opaque_auth *ap));
  __END_DECLS
  
  
  /*
   * Auth handle, interface to client side authenticators.
   */
  typedef struct __rpc_auth {
  	struct	opaque_auth	ah_cred;
  	struct	opaque_auth	ah_verf;
  	union	des_block	ah_key;
  	struct auth_ops {
  		void	(*ah_nextverf) __P((struct __rpc_auth *));
  		/* nextverf & serialize */
  		int	(*ah_marshal) __P((struct __rpc_auth *, XDR *));
  		/* validate verifier */
  		int	(*ah_validate) __P((struct __rpc_auth *,
  				struct opaque_auth *));
  		/* refresh credentials */
  		int	(*ah_refresh) __P((struct __rpc_auth *));
  		/* destroy this structure */
  		void	(*ah_destroy) __P((struct __rpc_auth *));
  	} *ah_ops;
  	caddr_t 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_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;
   */
  __BEGIN_DECLS
  struct sockaddr_in;
  extern AUTH *authunix_create		__P((char *, int, int, int, int *));
  extern AUTH *authunix_create_default	__P((void));
  extern AUTH *authnone_create		__P((void));
  __END_DECLS
  
  /* Forward compatibility with TI-RPC */
  #define authsys_create authunix_create
  #define authsys_create_default authunix_create_default
  
  /*
   * DES style authentication
   * AUTH *authdes_create(servername, window, timehost, ckey)
   * 	char *servername;		- network name of server
   *	u_int window;			- time to live
   * 	struct sockaddr *timehost;	- optional hostname to sync with
   * 	des_block *ckey;		- optional conversation key to use
   */
  __BEGIN_DECLS
  extern AUTH *authdes_create __P(( char *, u_int, struct sockaddr *, des_block * ));
  #ifdef NOTYET
  /*
   * TI-RPC supports this call, but it requires the inclusion of
   * NIS+-specific headers which would require the inclusion of other
   * headers which would result in a tangled mess. For now, the NIS+
   * code prototypes this routine internally.
   */
  extern AUTH *authdes_pk_create __P(( char *, netobj *, u_int,
  				     struct sockaddr *, des_block *,
  				     nis_server * ));
  #endif
  __END_DECLS
  
  /*
   * Netname manipulation routines.
   */
  __BEGIN_DECLS
  extern int netname2user __P(( char *, uid_t *, gid_t *, int *, gid_t *));
  extern int netname2host __P(( char *, char *, int ));
  extern int getnetname __P(( char * ));
  extern int user2netname __P(( char *, uid_t, char * ));
  extern int host2netname __P(( char *, char *, char * ));
  extern void passwd2des __P(( char *, char * ));
  __END_DECLS
  
  /*
   * Keyserv interface routines.
   * XXX Should not be here.
   */
  #ifndef HEXKEYBYTES
  #define HEXKEYBYTES 48
  #endif
  typedef char kbuf[HEXKEYBYTES];
  typedef char *namestr;
  
  struct netstarg {
  	kbuf st_priv_key;
  	kbuf st_pub_key;
  	namestr st_netname;
  };
  
  __BEGIN_DECLS
  extern int key_decryptsession __P(( const char *, des_block * ));
  extern int key_decryptsession_pk __P(( char *, netobj *, des_block * ));
  extern int key_encryptsession __P(( const char *, des_block * ));
  extern int key_encryptsession_pk __P(( char *, netobj *, des_block * ));
  extern int key_gendes __P(( des_block * ));
  extern int key_setsecret __P(( const char * ));
  extern int key_secretkey_is_set __P(( void ));
  extern int key_setnet __P(( struct netstarg * ));
  extern int key_get_conv __P(( char *, des_block * ));
  __END_DECLS
  
  /*
   * Publickey routines.
   */
  __BEGIN_DECLS
  extern int getpublickey __P(( char *, char * ));
  extern int getpublicandprivatekey __P(( char *, char * ));
  extern int getsecretkey __P(( char *, char *, char * ));
  __END_DECLS
  
  
  #define AUTH_NONE	0		/* no authentication */
  #define	AUTH_NULL	0		/* backward compatibility */
  #define	AUTH_UNIX	1		/* unix style (uid, gids) */
  #define	AUTH_SYS	1		/* forward compatibility */
  #define	AUTH_SHORT	2		/* short hand unix style */
  #define AUTH_DES	3		/* des style (encrypted timestamps) */
  
  #endif /* !_RPC_AUTH_H */
  