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/*      $NetBSD: rpc_msg.h,v 1.11 2000/06/02 22:57:56 fvdl Exp $        */

/*

 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for

 * unrestricted use provided that this legend is included on all tape

 * media and as a part of the software program in whole or part.  Users

 * may copy or modify Sun RPC without charge, but are not authorized

 * to license or distribute it to anyone else except as part of a product or

 * program developed by the user.

 *

 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE

 * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.

 *

 * Sun RPC is provided with no support and without any obligation on the

 * part of Sun Microsystems, Inc. to assist in its use, correction,

 * modification or enhancement.

 *

 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE

 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC

 * OR ANY PART THEREOF.

 *

 * In no event will Sun Microsystems, Inc. be liable for any lost revenue

 * or profits or other special, indirect and consequential damages, even if

 * Sun has been advised of the possibility of such damages.

 *

 * Sun Microsystems, Inc.

 * 2550 Garcia Avenue

 * Mountain View, California  94043

 *

 *      from: @(#)rpc_msg.h 1.7 86/07/16 SMI

 *      from: @(#)rpc_msg.h     2.1 88/07/29 4.0 RPCSRC

 * $FreeBSD: src/include/rpc/rpc_msg.h,v 1.14 2002/03/23 17:24:55 imp Exp $

 */

/*

 * rpc_msg.h

 * rpc message definition

 *

 * Copyright (C) 1984, Sun Microsystems, Inc.

 */

#ifndef _RPC_RPC_MSG_H

#define _RPC_RPC_MSG_H

#define RPC_MSG_VERSION         ((u_int32_t) 2)

#define RPC_SERVICE_PORT        ((u_short) 2048)

/*

 * Bottom up definition of an rpc message.

 * NOTE: call and reply use the same overall stuct but

 * different parts of unions within it.

 */

enum msg_type {

        CALL=0,

        REPLY=1

};

enum reply_stat {

        MSG_ACCEPTED=0,

        MSG_DENIED=1

};

enum accept_stat {

        SUCCESS=0,

        PROG_UNAVAIL=1,

        PROG_MISMATCH=2,

        PROC_UNAVAIL=3,

        GARBAGE_ARGS=4,

        SYSTEM_ERR=5

};

enum reject_stat {

        RPC_MISMATCH=0,

        AUTH_ERROR=1

};

/*

 * Reply part of an rpc exchange

 */

/*

 * Reply to an rpc request that was accepted by the server.

 * Note: there could be an error even though the request was

 * accepted.

 */

struct accepted_reply {

        struct opaque_auth      ar_verf;

        enum accept_stat        ar_stat;

        union {

                struct {

                        rpcvers_t low;

                        rpcvers_t high;

                } AR_versions;

                struct {

                        caddr_t where;

                        xdrproc_t proc;

                } AR_results;

                /* and many other null cases */

        } ru;

#define ar_results      ru.AR_results

#define ar_vers         ru.AR_versions

};

/*

 * Reply to an rpc request that was rejected by the server.

 */

struct rejected_reply {

        enum reject_stat rj_stat;

        union {

                struct {

                        rpcvers_t low;

                        rpcvers_t high;

                } RJ_versions;

                enum auth_stat RJ_why;  /* why authentication did not work */

        } ru;

#define rj_vers ru.RJ_versions

#define rj_why  ru.RJ_why

};

/*

 * Body of a reply to an rpc request.

 */

struct reply_body {

        enum reply_stat rp_stat;

        union {

                struct accepted_reply RP_ar;

                struct rejected_reply RP_dr;

        } ru;

#define rp_acpt ru.RP_ar

#define rp_rjct ru.RP_dr

};

/*

 * Body of an rpc request call.

 */

struct call_body {

        rpcvers_t cb_rpcvers;   /* must be equal to two */

        rpcprog_t cb_prog;

        rpcvers_t cb_vers;

        rpcproc_t cb_proc;

        struct opaque_auth cb_cred;

        struct opaque_auth cb_verf; /* protocol specific - provided by client */

};

/*

 * The rpc message

 */

struct rpc_msg {

        u_int32_t               rm_xid;

        enum msg_type           rm_direction;

        union {

                struct call_body RM_cmb;

                struct reply_body RM_rmb;

        } ru;

#define rm_call         ru.RM_cmb

#define rm_reply        ru.RM_rmb

};

#define acpted_rply     ru.RM_rmb.ru.RP_ar

#define rjcted_rply     ru.RM_rmb.ru.RP_dr

__BEGIN_DECLS

/*

 * XDR routine to handle a rpc message.

 * xdr_callmsg(xdrs, cmsg)

 *      XDR *xdrs;

 *      struct rpc_msg *cmsg;

 */

extern bool_t   xdr_callmsg(XDR *, struct rpc_msg *);

/*

 * XDR routine to pre-serialize the static part of a rpc message.

 * xdr_callhdr(xdrs, cmsg)

 *      XDR *xdrs;

 *      struct rpc_msg *cmsg;

 */

extern bool_t   xdr_callhdr(XDR *, struct rpc_msg *);

/*

 * XDR routine to handle a rpc reply.

 * xdr_replymsg(xdrs, rmsg)

 *      XDR *xdrs;

 *      struct rpc_msg *rmsg;

 */

extern bool_t   xdr_replymsg(XDR *, struct rpc_msg *);

/*

 * XDR routine to handle a accepted rpc reply.

 * xdr_accepted_reply(xdrs, rej)

 *      XDR *xdrs;

 *      struct accepted_reply *rej;

 */

extern bool_t   xdr_accepted_reply(XDR *, struct accepted_reply *);

/*

 * XDR routine to handle a rejected rpc reply.

 * xdr_rejected_reply(xdrs, rej)

 *      XDR *xdrs;

 *      struct rejected_reply *rej;

 */

extern bool_t   xdr_rejected_reply(XDR *, struct rejected_reply *);

/*

 * Fills in the error part of a reply message.

 * _seterr_reply(msg, error)

 *      struct rpc_msg *msg;

 *      struct rpc_err *error;

 */

extern void     _seterr_reply(struct rpc_msg *, struct rpc_err *);

__END_DECLS

#endif /* !_RPC_RPC_MSG_H */