[apple/libinfo.git] / rpc.subproj / rpc_msg.h

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.1 (the "License").  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * 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, MERCHANTIBILITY 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
 *      $Id: rpc_msg.h,v 1.3 2004/10/28 21:58:24 emoy Exp $
 */

/*
 * rpc_msg.h
 * rpc message definition
 *
 * Copyright (C) 1984, Sun Microsystems, Inc.
 */

#ifndef _RPC_RPCMSG_H
#define _RPC_RPCMSG_H

#ifdef __LP64__
#define RPC_MSG_VERSION         ((unsigned int) 2)
#else
#define RPC_MSG_VERSION         ((unsigned long) 2)
#endif
#define RPC_SERVICE_PORT        ((unsigned 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 {
#ifdef __LP64__
                        unsigned int low;
                        unsigned int high;
#else
                        unsigned long low;
                        unsigned long high;
#endif
                } 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 {
#ifdef __LP64__
                        unsigned int low;
                        unsigned int high;
#else
                        unsigned long low;
                        unsigned long high;
#endif
                } 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 {
#ifdef __LP64__
        unsigned int cb_rpcvers;        /* must be equal to two */
        unsigned int cb_prog;
        unsigned int cb_vers;
        unsigned int cb_proc;
#else
        unsigned long cb_rpcvers;       /* must be equal to two */
        unsigned long cb_prog;
        unsigned long cb_vers;
        unsigned long cb_proc;
#endif
        struct opaque_auth cb_cred;
        struct opaque_auth cb_verf; /* protocol specific - provided by client */
};

/*
 * The rpc message
 */
struct rpc_msg {
#ifdef __LP64__
        unsigned int                    rm_xid;
#else
        unsigned long                   rm_xid;
#endif
        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     __P((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     __P((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    __P((XDR *, struct rpc_msg *));

/*
 * 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   __P((struct rpc_msg *, struct rpc_err *));
__END_DECLS

#endif /* !_RPC_RPCMSG_H */