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  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 <sys/cdefs.h>
  45. #include <sys/socket.h>
  46. #include <rpc/xdr.h>
  47.  
  48. __BEGIN_DECLS
  49.  
  50. #define MAX_AUTH_BYTES  400
  51. #define MAXNETNAMELEN   255     /* maximum length of network user's name */
  52.  
  53. /*
  54.  * Status returned from authentication check
  55.  */
  56. enum auth_stat {
  57.         AUTH_OK=0,
  58.         /*
  59.          * failed at remote end
  60.          */
  61.         AUTH_BADCRED=1,                 /* bogus credentials (seal broken) */
  62.         AUTH_REJECTEDCRED=2,            /* client should begin new session */
  63.         AUTH_BADVERF=3,                 /* bogus verifier (seal broken) */
  64.         AUTH_REJECTEDVERF=4,            /* verifier expired or was replayed */
  65.         AUTH_TOOWEAK=5,                 /* rejected due to security reasons */
  66.         /*
  67.          * failed locally
  68.         */
  69.         AUTH_INVALIDRESP=6,             /* bogus response verifier */
  70.         AUTH_FAILED=7                   /* some unknown reason */
  71. };
  72.  
  73. union des_block {
  74.         struct {
  75.                 uint32_t high;
  76.                 uint32_t low;
  77.         } key;
  78.         char c[8];
  79. };
  80. typedef union des_block des_block;
  81. extern bool_t xdr_des_block (XDR *__xdrs, des_block *__blkp) __THROW;
  82.  
  83. /*
  84.  * Authentication info.  Opaque to client.
  85.  */
  86. struct opaque_auth {
  87.         enum_t  oa_flavor;              /* flavor of auth */
  88.         char*   oa_base;                /* address of more auth stuff */
  89.         unsigned int    oa_length;              /* not to exceed MAX_AUTH_BYTES */
  90. };
  91.  
  92. /*
  93.  * Auth handle, interface to client side authenticators.
  94.  */
  95. typedef struct AUTH AUTH;
  96. struct AUTH {
  97.   struct opaque_auth ah_cred;
  98.   struct opaque_auth ah_verf;
  99.   union des_block ah_key;
  100.   struct auth_ops {
  101.     void (*ah_nextverf) (AUTH *);
  102.     int  (*ah_marshal) (AUTH *, XDR *);         /* nextverf & serialize */
  103.     int  (*ah_validate) (AUTH *, struct opaque_auth *);
  104.                                                 /* validate verifier */
  105.     int  (*ah_refresh) (AUTH *);                /* refresh credentials */
  106.     void (*ah_destroy) (AUTH *);                /* destroy this structure */
  107.   } *ah_ops;
  108.   char* ah_private;
  109. };
  110.  
  111.  
  112. /*
  113.  * Authentication ops.
  114.  * The ops and the auth handle provide the interface to the authenticators.
  115.  *
  116.  * AUTH *auth;
  117.  * XDR  *xdrs;
  118.  * struct opaque_auth verf;
  119.  */
  120. #define AUTH_NEXTVERF(auth)             \
  121.                 ((*((auth)->ah_ops->ah_nextverf))(auth))
  122. #define auth_nextverf(auth)             \
  123.                 ((*((auth)->ah_ops->ah_nextverf))(auth))
  124.  
  125. #define AUTH_MARSHALL(auth, xdrs)       \
  126.                 ((*((auth)->ah_ops->ah_marshal))(auth, xdrs))
  127. #define auth_marshall(auth, xdrs)       \
  128.                 ((*((auth)->ah_ops->ah_marshal))(auth, xdrs))
  129.  
  130. #define AUTH_VALIDATE(auth, verfp)      \
  131.                 ((*((auth)->ah_ops->ah_validate))((auth), verfp))
  132. #define auth_validate(auth, verfp)      \
  133.                 ((*((auth)->ah_ops->ah_validate))((auth), verfp))
  134.  
  135. #define AUTH_REFRESH(auth)              \
  136.                 ((*((auth)->ah_ops->ah_refresh))(auth))
  137. #define auth_refresh(auth)              \
  138.                 ((*((auth)->ah_ops->ah_refresh))(auth))
  139.  
  140. #define AUTH_DESTROY(auth)              \
  141.                 ((*((auth)->ah_ops->ah_destroy))(auth))
  142. #define auth_destroy(auth)              \
  143.                 ((*((auth)->ah_ops->ah_destroy))(auth))
  144.  
  145.  
  146. extern struct opaque_auth _null_auth;
  147.  
  148.  
  149. /*
  150.  * These are the various implementations of client side authenticators.
  151.  */
  152.  
  153. /*
  154.  * Unix style authentication
  155.  * AUTH *authunix_create(machname, uid, gid, len, aup_gids)
  156.  *      char *machname;
  157.  *      int uid;
  158.  *      int gid;
  159.  *      int len;
  160.  *      int *aup_gids;
  161.  */
  162. extern AUTH *authunix_create (char *__machname,uid_t __uid, gid_t __gid,
  163.                               int __len, gid_t *__aup_gids) __THROW;
  164. extern AUTH *authunix_create_default (void) __THROW;
  165. extern AUTH *authnone_create (void) __THROW;
  166. extern AUTH *authdes_create (const char *__servername, unsigned int __window,
  167.                              struct sockaddr *__syncaddr, des_block *__ckey)
  168.      __THROW;
  169. extern AUTH *authdes_pk_create (const char *, netobj *, unsigned int,
  170.                                 struct sockaddr *, des_block *) __THROW;
  171.  
  172.  
  173. #define AUTH_NONE       0               /* no authentication */
  174. #define AUTH_NULL       0               /* backward compatibility */
  175. #define AUTH_SYS        1               /* unix style (uid, gids) */
  176. #define AUTH_UNIX       AUTH_SYS
  177. #define AUTH_SHORT      2               /* short hand unix style */
  178. #define AUTH_DES        3               /* des style (encrypted timestamps) */
  179. #define AUTH_DH         AUTH_DES        /* Diffie-Hellman (this is DES) */
  180. #define AUTH_KERB       4               /* kerberos style */
  181.  
  182. /*
  183.  *  Netname manipulating functions
  184.  *
  185.  */
  186. extern int getnetname (char *) __THROW;
  187. extern int host2netname (char *, const char *, const char *) __THROW;
  188. extern int user2netname (char *, const uid_t, const char *) __THROW;
  189. extern int netname2user (const char *, uid_t *, gid_t *, int *, gid_t *)
  190.      __THROW;
  191. extern int netname2host (const char *, char *, const int) __THROW;
  192.  
  193. /*
  194.  *
  195.  * These routines interface to the keyserv daemon
  196.  *
  197.  */
  198. extern int key_decryptsession (char *, des_block *) __THROW;
  199. extern int key_decryptsession_pk (char *, netobj *, des_block *) __THROW;
  200. extern int key_encryptsession (char *, des_block *) __THROW;
  201. extern int key_encryptsession_pk (char *, netobj *, des_block *) __THROW;
  202. extern int key_gendes (des_block *) __THROW;
  203. extern int key_setsecret (char *) __THROW;
  204. extern int key_secretkey_is_set (void) __THROW;
  205. extern int key_get_conv (char *, des_block *) __THROW;
  206.  
  207. /*
  208.  * XDR an opaque authentication struct.
  209.  */
  210. extern bool_t xdr_opaque_auth (XDR *, struct opaque_auth *) __THROW;
  211.  
  212. __END_DECLS
  213.  
  214. #endif /* rpc/auth.h */
  215.