1  /* Copyright (C) 1996-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #ifndef _RPC_AUTH_DES_H
      19  #define _RPC_AUTH_DES_H	1
      20  
      21  #include <sys/cdefs.h>
      22  #include <rpc/auth.h>
      23  
      24  __BEGIN_DECLS
      25  
      26  /* There are two kinds of "names": fullnames and nicknames */
      27  enum authdes_namekind
      28    {
      29      ADN_FULLNAME,
      30      ADN_NICKNAME
      31    };
      32  
      33  /* A fullname contains the network name of the client,
      34     a conversation key and the window */
      35  struct authdes_fullname
      36    {
      37      char *name;		/* network name of client, up to MAXNETNAMELEN */
      38      des_block key;	/* conversation key */
      39      uint32_t window;	/* associated window */
      40    };
      41  
      42  /* A credential */
      43  struct authdes_cred
      44    {
      45      enum authdes_namekind adc_namekind;
      46      struct authdes_fullname adc_fullname;
      47      uint32_t adc_nickname;
      48    };
      49  
      50  /* A timeval replacement for !32bit platforms */
      51  struct rpc_timeval
      52    {
      53      uint32_t tv_sec;            /* Seconds.  */
      54      uint32_t tv_usec;           /* Microseconds.  */
      55    };
      56  
      57  /* A des authentication verifier */
      58  struct authdes_verf
      59    {
      60      union
      61        {
      62  	struct rpc_timeval adv_ctime;	/* clear time */
      63  	des_block adv_xtime;		/* crypt time */
      64        }
      65      adv_time_u;
      66      uint32_t adv_int_u;
      67    };
      68  
      69  /* des authentication verifier: client variety
      70  
      71     adv_timestamp is the current time.
      72     adv_winverf is the credential window + 1.
      73     Both are encrypted using the conversation key. */
      74  #define adv_timestamp  adv_time_u.adv_ctime
      75  #define adv_xtimestamp adv_time_u.adv_xtime
      76  #define adv_winverf    adv_int_u
      77  
      78  /* des authentication verifier: server variety
      79  
      80     adv_timeverf is the client's timestamp + client's window
      81     adv_nickname is the server's nickname for the client.
      82     adv_timeverf is encrypted using the conversation key. */
      83  #define adv_timeverf   adv_time_u.adv_ctime
      84  #define adv_xtimeverf  adv_time_u.adv_xtime
      85  #define adv_nickname   adv_int_u
      86  
      87  /* Map a des credential into a unix cred. */
      88  extern int authdes_getucred (const struct authdes_cred * __adc,
      89  			     uid_t * __uid, gid_t * __gid,
      90  			     short *__grouplen, gid_t * __groups) __THROW;
      91  
      92  /* Get the public key for NAME and place it in KEY.  NAME can only be
      93     up to MAXNETNAMELEN bytes long and the destination buffer KEY should
      94     have HEXKEYBYTES + 1 bytes long to fit all characters from the key.  */
      95  extern int getpublickey (const char *__name, char *__key) __THROW;
      96  
      97  /* Get the secret key for NAME and place it in KEY.  PASSWD is used to
      98     decrypt the encrypted key stored in the database.  NAME can only be
      99     up to MAXNETNAMELEN bytes long and the destination buffer KEY
     100     should have HEXKEYBYTES + 1 bytes long to fit all characters from
     101     the key.  */
     102  extern int getsecretkey (const char *__name, char *__key,
     103  			 const char *__passwd) __THROW;
     104  
     105  extern int rtime (struct sockaddr_in *__addrp, struct rpc_timeval *__timep,
     106  		  struct rpc_timeval *__timeout) __THROW;
     107  
     108  __END_DECLS
     109  
     110  
     111  #endif /* rpc/auth_des.h */