/* rpc_prot.c - the rpc message definition *//* Copyright 1984-2000 Wind River Systems, Inc. */#include "copyright_wrs.h"/* * Copyright (c) 1987 Wind River Systems, Inc. * Copyright (C) 1984, Sun Microsystems, Inc. * * 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 *//*modification history--------------------01i,18apr00,ham  fixed compilation warnings.01h,20feb97,jank removed comment in comment L:3701g,26may92,rrr  the tree shuffle		  -changed includes to have absolute path from h/01f,04oct91,rrr  passed through the ansification filter		  -changed includes to have absolute path from h/		  -changed copyright notice01e,21aug91,wmd   removed redundant declaration of RNDUP.01d,19apr90,hjb   de-linted.01c,27oct89,hjb   upgraded to 4.001b,11nov87,jlf   added wrs copyright, title, mod history, etc.01a,01nov87,rdc   first VxWorks version*/#ifndef lint/* static char sccsid[] = "@(#)rpc_prot.c 1.1 86/02/03 Copyr 1984 Sun Micro"; */#endif/* * rpc_prot.c * * * This set of routines implements the rpc message definition, * its serializer and some common rpc utility routines. * The routines are meant for various implementations of rpc - * they are NOT for the rpc client or rpc service implementations! * Because authentication stuff is easy and is part of rpc, the opaque * routines are also in this program. */#include "rpc/rpctypes.h"#include "rpc/xdr.h"#include "rpc/auth.h"#include "rpc/clnt.h"#include "rpc/rpc_msg.h"#include "netinet/in.h"#include "vxWorks.h"/* * * * * * * * * * * * * * XDR Authentication * * * * * * * * * * * *//* struct opaque_auth _null_auth;	now defined in rpc_commondata.c - 4.0 *//* * XDR an opaque authentication struct * (see auth.h) */bool_txdr_opaque_auth(xdrs, ap)	register XDR *xdrs;	register struct opaque_auth *ap;{	if (xdr_enum(xdrs, &(ap->oa_flavor)))		return (xdr_bytes(xdrs, &ap->oa_base,			&ap->oa_length, MAX_AUTH_BYTES));	return (FALSE);}/* * XDR a DES block */bool_t								     /* 4.0 */xdr_des_block (xdrs, blkp)					     /* 4.0 */    register XDR *xdrs;    register union des_block *blkp;    {								     /* 4.0 */    return (xdr_opaque (xdrs, (caddr_t) blkp, sizeof (des_block)));  /* 4.0 */    }								     /* 4.0 *//* * XDR a DES key. */bool_txdr_deskey(xdrs, blkp)	register XDR *xdrs;	register union des_block *blkp;{	if (! xdr_u_long(xdrs, &(blkp->key.high)))		return (FALSE);	return (xdr_u_long(xdrs, &(blkp->key.low)));}/* * * * * * * * * * * * * * XDR RPC MESSAGE * * * * * * * * * * * * * * * *//* * XDR the MSG_ACCEPTED part of a reply message union */bool_txdr_accepted_reply(xdrs, ar)	register XDR *xdrs;	register struct accepted_reply *ar;{	/* personalized union, rather than calling xdr_union */	if (! xdr_opaque_auth(xdrs, &(ar->ar_verf)))		return (FALSE);	if (! xdr_enum(xdrs, (enum_t *)&(ar->ar_stat)))		return (FALSE);	switch (ar->ar_stat) {	case SUCCESS:		return ((*(ar->ar_results.proc))(xdrs, ar->ar_results.where));	case PROG_MISMATCH:		if (! xdr_u_long(xdrs, &(ar->ar_vers.low)))			return (FALSE);		return (xdr_u_long(xdrs, &(ar->ar_vers.high)));	default:            break;	}	return (TRUE);  /* TRUE => open ended set of problems */}/* * XDR the MSG_DENIED part of a reply message union */bool_txdr_rejected_reply(xdrs, rr)	register XDR *xdrs;	register struct rejected_reply *rr;{	/* personalized union, rather than calling xdr_union */	if (! xdr_enum(xdrs, (enum_t *)&(rr->rj_stat)))		return (FALSE);	switch (rr->rj_stat) {	case RPC_MISMATCH:		if (! xdr_u_long(xdrs, &(rr->rj_vers.low)))			return (FALSE);		return (xdr_u_long(xdrs, &(rr->rj_vers.high)));	case AUTH_ERROR:		return (xdr_enum(xdrs, (enum_t *)&(rr->rj_why)));	}	return (FALSE);}static struct xdr_discrim reply_dscrm[3] = {	{ (int)MSG_ACCEPTED, xdr_accepted_reply },	{ (int)MSG_DENIED, xdr_rejected_reply },	{ __dontcare__, NULL_xdrproc_t } };/* * XDR a reply message */bool_txdr_replymsg(xdrs, rmsg)	register XDR *xdrs;	register struct rpc_msg *rmsg;{	if (	    xdr_u_long(xdrs, &(rmsg->rm_xid)) &&	    xdr_enum(xdrs, (enum_t *)&(rmsg->rm_direction)) &&	    (rmsg->rm_direction == REPLY) )		return (xdr_union(xdrs, (enum_t *)&(rmsg->rm_reply.rp_stat),		    (caddr_t)&(rmsg->rm_reply.ru), reply_dscrm, NULL_xdrproc_t));	return (FALSE);}/* xdr_callmsg () is now in rpc_callmsg.c file.			4.0 *//* * Serializes the "static part" of a call message header. * The fields include: rm_xid, rm_direction, rpcvers, prog, and vers. * The rm_xid is not really static, but the user can easily munge on the fly. */bool_txdr_callhdr(xdrs, cmsg)	register XDR *xdrs;	register struct rpc_msg *cmsg;{	cmsg->rm_direction = CALL;	cmsg->rm_call.cb_rpcvers = RPC_MSG_VERSION;	if (	    (xdrs->x_op == XDR_ENCODE) &&	    xdr_u_long(xdrs, &(cmsg->rm_xid)) &&	    xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&	    xdr_u_long(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&	    xdr_u_long(xdrs, &(cmsg->rm_call.cb_prog)) )	    return (xdr_u_long(xdrs, &(cmsg->rm_call.cb_vers)));	return (FALSE);}/* ************************** Client utility routine ************* */voidaccepted(acpt_stat, error)	register enum accept_stat acpt_stat;	register struct rpc_err *error;{	switch (acpt_stat) {	case PROG_UNAVAIL:		error->re_status = RPC_PROGUNAVAIL;		return;	case PROG_MISMATCH:		error->re_status = RPC_PROGVERSMISMATCH;		return;	case PROC_UNAVAIL:		error->re_status = RPC_PROCUNAVAIL;		return;	case GARBAGE_ARGS:		error->re_status = RPC_CANTDECODEARGS;		return;	case SYSTEM_ERR:		error->re_status = RPC_SYSTEMERROR;		return;	case SUCCESS:		error->re_status = RPC_SUCCESS;		return;	}	/* something's wrong, but we don't know what ... */	error->re_status = RPC_FAILED;	error->re_lb.s1 = (long)MSG_ACCEPTED;	error->re_lb.s2 = (long)acpt_stat;}voidrejected(rjct_stat, error)	register enum reject_stat rjct_stat;	register struct rpc_err *error;{	switch (rjct_stat) {	case RPC_MISMATCH:		error->re_status = RPC_VERSMISMATCH;		return;	case AUTH_ERROR:		error->re_status = RPC_AUTHERROR;		return;	}	/* something's wrong, but we don't know what ... */	error->re_status = RPC_FAILED;	error->re_lb.s1 = (long)MSG_DENIED;	error->re_lb.s2 = (long)rjct_stat;}/* * given a reply message, fills in the error */void_seterr_reply(msg, error)	register struct rpc_msg *msg;	register struct rpc_err *error;{	/* optimized for normal, SUCCESSful case */	switch (msg->rm_reply.rp_stat) {	case MSG_ACCEPTED:		if (msg->acpted_rply.ar_stat == SUCCESS) {			error->re_status = RPC_SUCCESS;			return;		};		accepted(msg->acpted_rply.ar_stat, error);		break;	case MSG_DENIED:		rejected(msg->rjcted_rply.rj_stat, error);		break;	default:		error->re_status = RPC_FAILED;		error->re_lb.s1 = (long)(msg->rm_reply.rp_stat);		break;	}	switch (error->re_status) {	case RPC_VERSMISMATCH:		error->re_vers.low = msg->rjcted_rply.rj_vers.low;		error->re_vers.high = msg->rjcted_rply.rj_vers.high;		break;	case RPC_AUTHERROR:		error->re_why = msg->rjcted_rply.rj_why;		break;	case RPC_PROGVERSMISMATCH:		error->re_vers.low = msg->acpted_rply.ar_vers.low;		error->re_vers.high = msg->acpted_rply.ar_vers.high;		break;        default:                break;	}}