include/rpc/auth.h

   1 /* @(#)auth.h   2.3 88/08/07 4.0 RPCSRC; from 1.17 88/02/08 SMI */
   2 /*
   3  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   4  * unrestricted use provided that this legend is included on all tape
   5  * media and as a part of the software program in whole or part.  Users
   6  * may copy or modify Sun RPC without charge, but are not authorized
   7  * to license or distribute it to anyone else except as part of a product or
   8  * program developed by the user.
   9  *
  10  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  11  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  12  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  13  *
  14  * Sun RPC is provided with no support and without any obligation on the
  15  * part of Sun Microsystems, Inc. to assist in its use, correction,
  16  * modification or enhancement.
  17  *
  18  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  19  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  20  * OR ANY PART THEREOF.
  21  *
  22  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  23  * or profits or other special, indirect and consequential damages, even if
  24  * Sun has been advised of the possibility of such damages.
  25  *
  26  * Sun Microsystems, Inc.
  27  * 2550 Garcia Avenue
  28  * Mountain View, California  94043
  29  */
  30
  31 /*
  32  * auth.h, Authentication interface.
  33  *
  34  * Copyright (C) 1984, Sun Microsystems, Inc.
  35  *
  36  * The data structures are completely opaque to the client.  The client
  37  * is required to pass a AUTH * to routines that create rpc
  38  * "sessions".
  39  */
  40
  41 #ifndef _RPC_AUTH_H
  42
  43 #define _RPC_AUTH_H     1
  44 #include <features.h>
  45 #include <rpc/xdr.h>
  46
  47 __BEGIN_DECLS
  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                 u_int32_t high;
  75                 u_int32_t low;
  76         } key;
  77         char c[8];
  78 };
  79 typedef union des_block des_block;
  80 extern bool_t xdr_des_block (XDR *__xdrs, des_block *__blkp) __THROW;
  81
  82 /*
  83  * Authentication info.  Opaque to client.
  84  */
  85 struct opaque_auth {
  86         enum_t  oa_flavor;              /* flavor of auth */
  87         caddr_t oa_base;                /* address of more auth stuff */
  88         u_int   oa_length;              /* not to exceed MAX_AUTH_BYTES */
  89 };
  90
  91 /*
  92  * Auth handle, interface to client side authenticators.
  93  */
  94 typedef struct AUTH AUTH;
  95 struct AUTH {
  96   struct opaque_auth ah_cred;
  97   struct opaque_auth ah_verf;
  98   union des_block ah_key;
  99   /* not sure whether non-const-ness is a part of the spec... if it is,
 100    * enclose "const" in #ifdef _LIBC / #endif
 101    * to make it effective only for libc compile */
 102   const
 103   struct auth_ops {
 104     void (*ah_nextverf) (AUTH *);
 105     int  (*ah_marshal) (AUTH *, XDR *);         /* nextverf & serialize */
 106     int  (*ah_validate) (AUTH *, struct opaque_auth *);
 107                                                 /* validate verifier */
 108     int  (*ah_refresh) (AUTH *);                /* refresh credentials */
 109     void (*ah_destroy) (AUTH *);                /* destroy this structure */
 110   } *ah_ops;
 111   caddr_t ah_private;
 112 };
 113
 114
 115 /*
 116  * Authentication ops.
 117  * The ops and the auth handle provide the interface to the authenticators.
 118  *
 119  * AUTH *auth;
 120  * XDR  *xdrs;
 121  * struct opaque_auth verf;
 122  */
 123 #define AUTH_NEXTVERF(auth)             \
 124                 ((*((auth)->ah_ops->ah_nextverf))(auth))
 125 #define auth_nextverf(auth)             \
 126                 ((*((auth)->ah_ops->ah_nextverf))(auth))
 127
 128 #define AUTH_MARSHALL(auth, xdrs)       \
 129                 ((*((auth)->ah_ops->ah_marshal))(auth, xdrs))
 130 #define auth_marshall(auth, xdrs)       \
 131                 ((*((auth)->ah_ops->ah_marshal))(auth, xdrs))
 132
 133 #define AUTH_VALIDATE(auth, verfp)      \
 134                 ((*((auth)->ah_ops->ah_validate))((auth), verfp))
 135 #define auth_validate(auth, verfp)      \
 136                 ((*((auth)->ah_ops->ah_validate))((auth), verfp))
 137
 138 #define AUTH_REFRESH(auth)              \
 139                 ((*((auth)->ah_ops->ah_refresh))(auth))
 140 #define auth_refresh(auth)              \
 141                 ((*((auth)->ah_ops->ah_refresh))(auth))
 142
 143 #define AUTH_DESTROY(auth)              \
 144                 ((*((auth)->ah_ops->ah_destroy))(auth))
 145 #define auth_destroy(auth)              \
 146                 ((*((auth)->ah_ops->ah_destroy))(auth))
 147
 148
 149 extern struct opaque_auth _null_auth;
 150
 151
 152 /*
 153  * These are the various implementations of client side authenticators.
 154  */
 155
 156 /*
 157  * Unix style authentication
 158  * AUTH *authunix_create(machname, uid, gid, len, aup_gids)
 159  *      char *machname;
 160  *      int uid;
 161  *      int gid;
 162  *      int len;
 163  *      int *aup_gids;
 164  */
 165 extern AUTH *authunix_create (char *__machname, __uid_t __uid, __gid_t __gid,
 166                               int __len, __gid_t *__aup_gids);
 167 libc_hidden_proto(authunix_create)
 168 extern AUTH *authunix_create_default (void);
 169 libc_hidden_proto(authunix_create_default)
 170 extern AUTH *authnone_create (void) __THROW;
 171 libc_hidden_proto(authnone_create)
 172 #if 0
 173 extern AUTH *authdes_create (const char *__servername, u_int __window,
 174                              struct sockaddr *__syncaddr, des_block *__ckey)
 175      __THROW;
 176 extern AUTH *authdes_pk_create (const char *, netobj *, u_int,
 177                                 struct sockaddr *, des_block *) __THROW;
 178 #endif
 179
 180
 181 #define AUTH_NONE       0               /* no authentication */
 182 #define AUTH_NULL       0               /* backward compatibility */
 183 #define AUTH_SYS        1               /* unix style (uid, gids) */
 184 #define AUTH_UNIX       AUTH_SYS
 185 #define AUTH_SHORT      2               /* short hand unix style */
 186 #define AUTH_DES        3               /* des style (encrypted timestamps) */
 187 #define AUTH_DH         AUTH_DES        /* Diffie-Hellman (this is DES) */
 188 #define AUTH_KERB       4               /* kerberos style */
 189
 190 #if 0
 191 /*
 192  *  Netname manipulating functions
 193  *
 194  */
 195 extern int getnetname (char *) __THROW;
 196 extern int host2netname (char *, const char *, const char *) __THROW;
 197 extern int user2netname (char *, const uid_t, const char *) __THROW;
 198 extern int netname2user (const char *, uid_t *, gid_t *, int *, gid_t *)
 199      __THROW;
 200 extern int netname2host (const char *, char *, const int) __THROW;
 201
 202 /*
 203  *
 204  * These routines interface to the keyserv daemon
 205  *
 206  */
 207 extern int key_decryptsession (char *, des_block *);
 208 extern int key_decryptsession_pk (char *, netobj *, des_block *);
 209 extern int key_encryptsession (char *, des_block *);
 210 extern int key_encryptsession_pk (char *, netobj *, des_block *);
 211 extern int key_gendes (des_block *);
 212 extern int key_setsecret (char *);
 213 extern int key_secretkey_is_set (void);
 214 extern int key_get_conv (char *, des_block *);
 215 #endif
 216
 217 /*
 218  * XDR an opaque authentication struct.
 219  */
 220 extern bool_t xdr_opaque_auth (XDR *, struct opaque_auth *) __THROW;
 221 libc_hidden_proto(xdr_opaque_auth)
 222
 223 __END_DECLS
 224
 225 #endif /* rpc/auth.h */