auth.h

VRTX 商用嵌入式实时操作系统

/***************************************************************************
*
*		Copyright (c) 1994 MICROTEC RESEARCH INCORPORATED.
*
*	All rights reserved. MICROTEC RESEARCH's source code is an unpublished
*	work and the use of a copyright notice does not imply otherwise.
*	This source code contains confidential, trade secret material of
*	MICROTEC RESEARCH. Any attempt or participation in deciphering,
*	decoding, reverse engineering or in any way altering the source code
*	is strictly prohibited, unless the prior written consent of
*	MICROTEC RESEARCH is obtained.
*
*
*	Module Name:		%M%
*
*	Identification:		%Z% %I% %M%
*
*	Date:			%G%  %U%
*
****************************************************************************
*/

/* @(#)auth.h	2.3 88/08/07 4.0 RPCSRC 1995 Microtec Research Inc.";*/
/*
 * 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, MERCHANTIBILITY 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
 */

/*
 * 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".
 */

#include <ansiprot.h>

#ifdef __cplusplus
extern "C" {
#endif

#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 */
};

#if (mc68000 || sparc || vax || i386 || tahoe || hp300 || I960 || PPC)
typedef u_long u_int32;	/* 32-bit unsigned integers */
#endif

union des_block {
	struct {
		u_int32 high;
		u_int32 low;
	} key;
	char c[8];
};
typedef union des_block des_block;
extern bool_t xdr_des_block (ANSIPROT2(register struct _xdr *xdrs, register
				       des_block *blkp)); 

/*
 * 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{
	struct	opaque_auth	ah_cred;
	struct	opaque_auth	ah_verf;
	union	des_block	ah_key;
	struct auth_ops {
		void	(*ah_nextverf) (ANSIPROT1(void));
	        /* nextverf & serialize */
		int	(*ah_marshal) (ANSIPROT2(struct _auth *,
						 struct _xdr *)); 
	        /* validate varifier */
		int	(*ah_validate) (ANSIPROT2(struct _auth *,
						  struct opaque_auth *)); 
	        /* refresh credentials */
		int	(*ah_refresh) (ANSIPROT1(struct _auth *));
	        /* destroy this structure */
		void	(*ah_destroy) (ANSIPROT1(struct _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;
 */
extern AUTH *authunix_create (ANSIPROT5(char *machname, int uid, int gid,
				      register int len, int *aup_gids)); 
extern AUTH *authunix_create_default (ANSIPROT1(void));	/* takes no parameters */
extern AUTH *authnone_create (ANSIPROT1(void));		/* takes no parameters */
extern AUTH *authdes_create (ANSIPROT1(void));

#define AUTH_NONE	0		/* no authentication */
#define	AUTH_NULL	0		/* backward compatibility */
#define	AUTH_UNIX	1		/* unix style (uid, gids) */
#define	AUTH_SHORT	2		/* short hand unix style */
#define AUTH_DES	3		/* des style (encrypted timestamps) */

#ifdef __cplusplus
}
#endif