auth_kerb.h

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/*  $FreeBSD: src/include/rpc/auth_kerb.h,v 1.2 2002/09/04 23:58:23 alfred Exp $ */
/*
 * Copyright (c) 2009, Sun Microsystems, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name of Sun Microsystems, Inc. nor the names of its
 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
/*
 * auth_kerb.h, Protocol for Kerberos style authentication for RPC
 *
 * Copyright (C) 1986, Sun Microsystems, Inc.
 */
 
#ifndef _RPC_AUTH_KERB_H
#define _RPC_AUTH_KERB_H
 
#ifdef KERBEROS
 
#include <kerberos/krb.h>
#include <sys/socket.h>
#include <sys/t_kuser.h>
#include <netinet/in.h>
#include <rpc/svc.h>
 
/*
 * There are two kinds of "names": fullnames and nicknames
 */
enum authkerb_namekind {
    AKN_FULLNAME,
    AKN_NICKNAME
};
/*
 * A fullname contains the ticket and the window
 */
struct authkerb_fullname {
    KTEXT_ST ticket;
    u_long window;      /* associated window */
};
 
/*
 *  cooked credential stored in rq_clntcred
 */
struct authkerb_clnt_cred {
    /* start of AUTH_DAT */
    unsigned char k_flags;  /* Flags from ticket */
    char    pname[ANAME_SZ]; /* Principal's name */
    char    pinst[INST_SZ]; /* His Instance */
    char    prealm[REALM_SZ]; /* His Realm */
    unsigned long checksum; /* Data checksum (opt) */
    C_Block session;    /* Session Key */
    int life;       /* Life of ticket */
    unsigned long time_sec; /* Time ticket issued */
    unsigned long address;  /* Address in ticket */
    /* KTEXT_ST reply;  Auth reply (opt) */
    /* end of AUTH_DAT */
    unsigned long expiry;   /* time the ticket is expiring */
    u_long nickname;    /* Nickname into cache */
    u_long window;      /* associated window */
};
 
typedef struct authkerb_clnt_cred authkerb_clnt_cred;
 
/*
 * A credential
 */
struct authkerb_cred {
    enum authkerb_namekind akc_namekind;
    struct authkerb_fullname akc_fullname;
    u_long akc_nickname;
};
 
/*
 * A kerb authentication verifier
 */
struct authkerb_verf {
    union {
        struct timeval akv_ctime;   /* clear time */
        des_block akv_xtime;        /* crypt time */
    } akv_time_u;
    u_long akv_int_u;
};
 
/*
 * des authentication verifier: client variety
 *
 * akv_timestamp is the current time.
 * akv_winverf is the credential window + 1.
 * Both are encrypted using the conversation key.
 */
#ifndef akv_timestamp
#define akv_timestamp   akv_time_u.akv_ctime
#define akv_xtimestamp  akv_time_u.akv_xtime
#define akv_winverf akv_int_u
#endif
/*
 * des authentication verifier: server variety
 *
 * akv_timeverf is the client's timestamp + client's window
 * akv_nickname is the server's nickname for the client.
 * akv_timeverf is encrypted using the conversation key.
 */
#ifndef akv_timeverf
#define akv_timeverf    akv_time_u.akv_ctime
#define akv_xtimeverf   akv_time_u.akv_xtime
#define akv_nickname    akv_int_u
#endif
 
/*
 * Register the service name, instance and realm.
 */
extern int  authkerb_create(char *, char *, char *, u_int,
            struct netbuf *, int *, dev_t, int, AUTH **);
extern bool_t   xdr_authkerb_cred(XDR *, struct authkerb_cred *);
extern bool_t   xdr_authkerb_verf(XDR *, struct authkerb_verf *);
extern int  svc_kerb_reg(SVCXPRT *, char *, char *, char *);
extern enum auth_stat _svcauth_kerb(struct svc_req *, struct rpc_msg *);
 
#endif KERBEROS
#endif  /* !_RPC_AUTH_KERB_H */