include/rpc/auth_kerb.h

   1 /*      $FreeBSD$ */
   2 /*-
   3  * Copyright (c) 2009, Sun Microsystems, Inc.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are met:
   8  * - Redistributions of source code must retain the above copyright notice,
   9  *   this list of conditions and the following disclaimer.
  10  * - Redistributions in binary form must reproduce the above copyright notice,
  11  *   this list of conditions and the following disclaimer in the documentation
  12  *   and/or other materials provided with the distribution.
  13  * - Neither the name of Sun Microsystems, Inc. nor the names of its
  14  *   contributors may be used to endorse or promote products derived
  15  *   from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  18  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  21  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  27  * POSSIBILITY OF SUCH DAMAGE.
  28  */
  29 /*
  30  * auth_kerb.h, Protocol for Kerberos style authentication for RPC
  31  *
  32  * Copyright (C) 1986, Sun Microsystems, Inc.
  33  */
  34
  35 #ifndef _RPC_AUTH_KERB_H
  36 #define _RPC_AUTH_KERB_H
  37
  38 #ifdef KERBEROS
  39
  40 #include <kerberos/krb.h>
  41 #include <sys/socket.h>
  42 #include <sys/t_kuser.h>
  43 #include <netinet/in.h>
  44 #include <rpc/svc.h>
  45
  46 /*
  47  * There are two kinds of "names": fullnames and nicknames
  48  */
  49 enum authkerb_namekind {
  50         AKN_FULLNAME,
  51         AKN_NICKNAME
  52 };
  53 /*
  54  * A fullname contains the ticket and the window
  55  */
  56 struct authkerb_fullname {
  57         KTEXT_ST ticket;
  58         u_long window;          /* associated window */
  59 };
  60
  61 /*
  62  *  cooked credential stored in rq_clntcred
  63  */
  64 struct authkerb_clnt_cred {
  65         /* start of AUTH_DAT */
  66         unsigned char k_flags;  /* Flags from ticket */
  67         char    pname[ANAME_SZ]; /* Principal's name */
  68         char    pinst[INST_SZ]; /* His Instance */
  69         char    prealm[REALM_SZ]; /* His Realm */
  70         unsigned long checksum; /* Data checksum (opt) */
  71         C_Block session;        /* Session Key */
  72         int     life;           /* Life of ticket */
  73         unsigned long time_sec; /* Time ticket issued */
  74         unsigned long address;  /* Address in ticket */
  75         /* KTEXT_ST reply;      Auth reply (opt) */
  76         /* end of AUTH_DAT */
  77         unsigned long expiry;   /* time the ticket is expiring */
  78         u_long nickname;        /* Nickname into cache */
  79         u_long window;          /* associated window */
  80 };
  81
  82 typedef struct authkerb_clnt_cred authkerb_clnt_cred;
  83
  84 /*
  85  * A credential
  86  */
  87 struct authkerb_cred {
  88         enum authkerb_namekind akc_namekind;
  89         struct authkerb_fullname akc_fullname;
  90         u_long akc_nickname;
  91 };
  92
  93 /*
  94  * A kerb authentication verifier
  95  */
  96 struct authkerb_verf {
  97         union {
  98                 struct timeval akv_ctime;       /* clear time */
  99                 des_block akv_xtime;            /* crypt time */
 100         } akv_time_u;
 101         u_long akv_int_u;
 102 };
 103
 104 /*
 105  * des authentication verifier: client variety
 106  *
 107  * akv_timestamp is the current time.
 108  * akv_winverf is the credential window + 1.
 109  * Both are encrypted using the conversation key.
 110  */
 111 #ifndef akv_timestamp
 112 #define akv_timestamp   akv_time_u.akv_ctime
 113 #define akv_xtimestamp  akv_time_u.akv_xtime
 114 #define akv_winverf     akv_int_u
 115 #endif
 116 /*
 117  * des authentication verifier: server variety
 118  *
 119  * akv_timeverf is the client's timestamp + client's window
 120  * akv_nickname is the server's nickname for the client.
 121  * akv_timeverf is encrypted using the conversation key.
 122  */
 123 #ifndef akv_timeverf
 124 #define akv_timeverf    akv_time_u.akv_ctime
 125 #define akv_xtimeverf   akv_time_u.akv_xtime
 126 #define akv_nickname    akv_int_u
 127 #endif
 128
 129 /*
 130  * Register the service name, instance and realm.
 131  */
 132 extern int      authkerb_create(char *, char *, char *, u_int,
 133                         struct netbuf *, int *, dev_t, int, AUTH **);
 134 extern bool_t   xdr_authkerb_cred(XDR *, struct authkerb_cred *);
 135 extern bool_t   xdr_authkerb_verf(XDR *, struct authkerb_verf *);
 136 extern int      svc_kerb_reg(SVCXPRT *, char *, char *, char *);
 137 extern enum auth_stat _svcauth_kerb(struct svc_req *, struct rpc_msg *);
 138
 139 #endif  /* KERBEROS */
 140 #endif  /* !_RPC_AUTH_KERB_H */