Home | History | Annotate | Line # | Download | only in rpc
      1 /*	$NetBSD: auth.h,v 1.20 2020/10/03 18:30:39 christos 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, MERCHANTIBILITY 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  *	@(#)auth.h	2.3 88/08/07 4.0 RPCSRC
     33  */
     34 
     35 /*
     36  * auth.h, Authentication interface.
     37  *
     38  * Copyright (C) 1984, Sun Microsystems, Inc.
     39  *
     40  * The data structures are completely opaque to the client.  The client
     41  * is required to pass a AUTH * to routines that create rpc
     42  * "sessions".
     43  */
     44 
     45 #ifndef _RPC_AUTH_H_
     46 #define _RPC_AUTH_H_
     47 #include <sys/cdefs.h>
     48 
     49 #define MAX_AUTH_BYTES	400
     50 #define MAXNETNAMELEN	255	/* maximum length of network user's name */
     51 
     52 /*
     53  * Status returned from authentication check
     54  */
     55 enum auth_stat {
     56 	AUTH_OK=0,
     57 	/*
     58 	 * failed at remote end
     59 	 */
     60 	AUTH_BADCRED=1,			/* bogus credentials (seal broken) */
     61 	AUTH_REJECTEDCRED=2,		/* client should begin new session */
     62 	AUTH_BADVERF=3,			/* bogus verifier (seal broken) */
     63 	AUTH_REJECTEDVERF=4,		/* verifier expired or was replayed */
     64 	AUTH_TOOWEAK=5,			/* rejected due to security reasons */
     65 	/*
     66 	 * failed locally
     67 	*/
     68 	AUTH_INVALIDRESP=6,		/* bogus response verifier */
     69 	AUTH_FAILED=7			/* some unknown reason */
     70 };
     71 
     72 union des_block {
     73 	struct {
     74 		uint32_t high;
     75 		uint32_t low;
     76 	} key;
     77 	char c[8];
     78 };
     79 typedef union des_block des_block;
     80 __BEGIN_DECLS
     81 extern bool_t xdr_des_block(XDR *, des_block *);
     82 __END_DECLS
     83 
     84 /*
     85  * Authentication info.  Opaque to client.
     86  */
     87 struct opaque_auth {
     88 	enum_t	oa_flavor;		/* flavor of auth */
     89 	caddr_t	oa_base;		/* address of more auth stuff */
     90 	unsigned int oa_length;		/* not to exceed MAX_AUTH_BYTES */
     91 };
     92 
     93 
     94 /*
     95  * Auth handle, interface to client side authenticators.
     96  */
     97 typedef struct __rpc_auth {
     98 	struct	opaque_auth	ah_cred;
     99 	struct	opaque_auth	ah_verf;
    100 	union	des_block	ah_key;
    101 	const struct auth_ops {
    102 		void	(*ah_nextverf)(struct __rpc_auth *);
    103 		/* nextverf & serialize */
    104 		int	(*ah_marshal)(struct __rpc_auth *, XDR *);
    105 		/* validate varifier */
    106 		int	(*ah_validate)(struct __rpc_auth *,
    107 			    struct opaque_auth *);
    108 		/* refresh credentials */
    109 		int	(*ah_refresh)(struct __rpc_auth *);
    110 		/* destroy this structure */
    111 		void	(*ah_destroy)(struct __rpc_auth *);
    112 	} *ah_ops;
    113 	void *ah_private;
    114 } AUTH;
    115 
    116 
    117 /*
    118  * Authentication ops.
    119  * The ops and the auth handle provide the interface to the authenticators.
    120  *
    121  * AUTH	*auth;
    122  * XDR	*xdrs;
    123  * struct opaque_auth verf;
    124  */
    125 #define AUTH_NEXTVERF(auth)		\
    126 		((*((auth)->ah_ops->ah_nextverf))(auth))
    127 #define auth_nextverf(auth)		\
    128 		((*((auth)->ah_ops->ah_nextverf))(auth))
    129 
    130 #define AUTH_MARSHALL(auth, xdrs)	\
    131 		((*((auth)->ah_ops->ah_marshal))(auth, xdrs))
    132 #define auth_marshall(auth, xdrs)	\
    133 		((*((auth)->ah_ops->ah_marshal))(auth, xdrs))
    134 
    135 #define AUTH_VALIDATE(auth, verfp)	\
    136 		((*((auth)->ah_ops->ah_validate))((auth), verfp))
    137 #define auth_validate(auth, verfp)	\
    138 		((*((auth)->ah_ops->ah_validate))((auth), verfp))
    139 
    140 #define AUTH_REFRESH(auth)		\
    141 		((*((auth)->ah_ops->ah_refresh))(auth))
    142 #define auth_refresh(auth)		\
    143 		((*((auth)->ah_ops->ah_refresh))(auth))
    144 
    145 #define AUTH_DESTROY(auth)		\
    146 		((*((auth)->ah_ops->ah_destroy))(auth))
    147 #define auth_destroy(auth)		\
    148 		((*((auth)->ah_ops->ah_destroy))(auth))
    149 
    150 
    151 extern struct opaque_auth _null_auth;
    152 
    153 
    154 /*
    155  * These are the various implementations of client side authenticators.
    156  */
    157 
    158 /*
    159  * Unix style authentication
    160  * AUTH *authunix_create(machname, uid, gid, len, aup_gids)
    161  *	char *machname;
    162  *	int uid;
    163  *	int gid;
    164  *	int len;
    165  *	int *aup_gids;
    166  */
    167 __BEGIN_DECLS
    168 struct sockaddr_in;
    169 extern AUTH *authunix_create		(char *, int, int, int, int *);
    170 extern AUTH *authunix_create_default	(void);
    171 extern AUTH *authnone_create		(void);
    172 extern AUTH *authdes_create		(char *, unsigned int,
    173 					    struct sockaddr_in *, des_block *);
    174 extern bool_t xdr_opaque_auth		(XDR *, struct opaque_auth *);
    175 extern void set_rpc_maxgrouplist	(int);
    176 
    177 #define authsys_create(c,i1,i2,i3,ip) authunix_create((c),(i1),(i2),(i3),(ip))
    178 #define authsys_create_default() authunix_create_default()
    179 
    180 struct svc_req;
    181 struct rpc_msg;
    182 enum auth_stat _svcauth_null(struct svc_req *, struct rpc_msg *);
    183 enum auth_stat _svcauth_short(struct svc_req *, struct rpc_msg *);
    184 enum auth_stat _svcauth_unix(struct svc_req *, struct rpc_msg *);
    185 __END_DECLS
    186 
    187 #define AUTH_NONE	0		/* no authentication */
    188 #define	AUTH_NULL	0		/* backward compatibility */
    189 #define	AUTH_SYS	1		/* unix style (uid, gids) */
    190 #define AUTH_UNIX	AUTH_SYS	/* backward compatibility */
    191 #define	AUTH_SHORT	2		/* short hand unix style */
    192 #define AUTH_DES	3		/* des style (encrypted timestamps) */
    193 
    194 #endif /* !_RPC_AUTH_H_ */
    195