NetBSD-5.0.2/lib/libc/rpc/rpcb_prot.c
/* $NetBSD: rpcb_prot.c,v 1.9 2006/05/11 17:11:57 mrg 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, 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
*/
/*
* Copyright (c) 1986-1991 by Sun Microsystems Inc.
*/
/* #ident "@(#)rpcb_prot.c 1.13 94/04/24 SMI" */
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)rpcb_prot.c 1.9 89/04/21 Copyr 1984 Sun Micro";
#else
__RCSID("$NetBSD: rpcb_prot.c,v 1.9 2006/05/11 17:11:57 mrg Exp $");
#endif
#endif
/*
* rpcb_prot.c
* XDR routines for the rpcbinder version 3.
*
* Copyright (C) 1984, 1988, Sun Microsystems, Inc.
*/
#include "namespace.h"
#include <rpc/rpc.h>
#include <rpc/types.h>
#include <rpc/xdr.h>
#include <rpc/rpcb_prot.h>
#include <assert.h>
#ifdef __weak_alias
__weak_alias(xdr_rpcb,_xdr_rpcb)
__weak_alias(xdr_rpcblist_ptr,_xdr_rpcblist_ptr)
__weak_alias(xdr_rpcblist,_xdr_rpcblist)
__weak_alias(xdr_rpcb_entry,_xdr_rpcb_entry)
__weak_alias(xdr_rpcb_entry_list_ptr,_xdr_rpcb_entry_list_ptr)
__weak_alias(xdr_rpcb_rmtcallargs,_xdr_rpcb_rmtcallargs)
__weak_alias(xdr_rpcb_rmtcallres,_xdr_rpcb_rmtcallres)
__weak_alias(xdr_netbuf,_xdr_netbuf)
#endif
bool_t
xdr_rpcb(xdrs, objp)
XDR *xdrs;
RPCB *objp;
{
_DIAGASSERT(objp != NULL);
if (!xdr_u_int32_t(xdrs, &objp->r_prog)) {
return (FALSE);
}
if (!xdr_u_int32_t(xdrs, &objp->r_vers)) {
return (FALSE);
}
if (!xdr_string(xdrs, &objp->r_netid, (u_int)~0)) {
return (FALSE);
}
if (!xdr_string(xdrs, &objp->r_addr, (u_int)~0)) {
return (FALSE);
}
if (!xdr_string(xdrs, &objp->r_owner, (u_int)~0)) {
return (FALSE);
}
return (TRUE);
}
/*
* rpcblist_ptr implements a linked list. The RPCL definition from
* rpcb_prot.x is:
*
* struct rpcblist {
* rpcb rpcb_map;
* struct rpcblist *rpcb_next;
* };
* typedef rpcblist *rpcblist_ptr;
*
* Recall that "pointers" in XDR are encoded as a boolean, indicating whether
* there's any data behind the pointer, followed by the data (if any exists).
* The boolean can be interpreted as ``more data follows me''; if FALSE then
* nothing follows the boolean; if TRUE then the boolean is followed by an
* actual struct rpcb, and another rpcblist_ptr (declared in RPCL as "struct
* rpcblist *").
*
* This could be implemented via the xdr_pointer type, though this would
* result in one recursive call per element in the list. Rather than do that
* we can ``unwind'' the recursion into a while loop and use xdr_reference to
* serialize the rpcb elements.
*/
bool_t
xdr_rpcblist_ptr(xdrs, rp)
XDR *xdrs;
rpcblist_ptr *rp;
{
/*
* more_elements is pre-computed in case the direction is
* XDR_ENCODE or XDR_FREE. more_elements is overwritten by
* xdr_bool when the direction is XDR_DECODE.
*/
bool_t more_elements;
int freeing;
rpcblist_ptr next;
rpcblist_ptr next_copy;
_DIAGASSERT(xdrs != NULL);
/* XXX: rp may be NULL ??? */
freeing = (xdrs->x_op == XDR_FREE);
next = NULL;
for (;;) {
more_elements = (bool_t)(*rp != NULL);
if (! xdr_bool(xdrs, &more_elements)) {
return (FALSE);
}
if (! more_elements) {
return (TRUE); /* we are done */
}
/*
* the unfortunate side effect of non-recursion is that in
* the case of freeing we must remember the next object
* before we free the current object ...
*/
if (freeing && *rp)
next = (*rp)->rpcb_next;
if (! xdr_reference(xdrs, (caddr_t *)rp,
(u_int)sizeof (rpcblist), (xdrproc_t)xdr_rpcb)) {
return (FALSE);
}
if (freeing) {
next_copy = next;
rp = &next_copy;
/*
* Note that in the subsequent iteration, next_copy
* gets nulled out by the xdr_reference
* but next itself survives.
*/
} else if (*rp) {
rp = &((*rp)->rpcb_next);
}
}
/*NOTREACHED*/
}
/*
* xdr_rpcblist() is specified to take a RPCBLIST **, but is identical in
* functionality to xdr_rpcblist_ptr().
*/
bool_t
xdr_rpcblist(xdrs, rp)
XDR *xdrs;
RPCBLIST **rp;
{
bool_t dummy;
dummy = xdr_rpcblist_ptr(xdrs, (rpcblist_ptr *)rp);
return (dummy);
}
bool_t
xdr_rpcb_entry(xdrs, objp)
XDR *xdrs;
rpcb_entry *objp;
{
_DIAGASSERT(objp != NULL);
if (!xdr_string(xdrs, &objp->r_maddr, (u_int)~0)) {
return (FALSE);
}
if (!xdr_string(xdrs, &objp->r_nc_netid, (u_int)~0)) {
return (FALSE);
}
if (!xdr_u_int32_t(xdrs, &objp->r_nc_semantics)) {
return (FALSE);
}
if (!xdr_string(xdrs, &objp->r_nc_protofmly, (u_int)~0)) {
return (FALSE);
}
if (!xdr_string(xdrs, &objp->r_nc_proto, (u_int)~0)) {
return (FALSE);
}
return (TRUE);
}
bool_t
xdr_rpcb_entry_list_ptr(xdrs, rp)
XDR *xdrs;
rpcb_entry_list_ptr *rp;
{
/*
* more_elements is pre-computed in case the direction is
* XDR_ENCODE or XDR_FREE. more_elements is overwritten by
* xdr_bool when the direction is XDR_DECODE.
*/
bool_t more_elements;
int freeing;
rpcb_entry_list_ptr next;
rpcb_entry_list_ptr next_copy;
_DIAGASSERT(xdrs != NULL);
/* XXX: rp is allowed to be NULL ??? */
freeing = (xdrs->x_op == XDR_FREE);
next = NULL;
for (;;) {
more_elements = (bool_t)(*rp != NULL);
if (! xdr_bool(xdrs, &more_elements)) {
return (FALSE);
}
if (! more_elements) {
return (TRUE); /* we are done */
}
/*
* the unfortunate side effect of non-recursion is that in
* the case of freeing we must remember the next object
* before we free the current object ...
*/
if (freeing && *rp)
next = (*rp)->rpcb_entry_next;
if (! xdr_reference(xdrs, (caddr_t *)rp,
(u_int)sizeof (rpcb_entry_list),
(xdrproc_t)xdr_rpcb_entry)) {
return (FALSE);
}
if (freeing) {
next_copy = next;
rp = &next_copy;
/*
* Note that in the subsequent iteration, next_copy
* gets nulled out by the xdr_reference
* but next itself survives.
*/
} else if (*rp) {
rp = &((*rp)->rpcb_entry_next);
}
}
/*NOTREACHED*/
}
/*
* XDR remote call arguments
* written for XDR_ENCODE direction only
*/
bool_t
xdr_rpcb_rmtcallargs(xdrs, p)
XDR *xdrs;
struct rpcb_rmtcallargs *p;
{
struct r_rpcb_rmtcallargs *objp =
(struct r_rpcb_rmtcallargs *)(void *)p;
u_int lenposition, argposition, position;
int32_t *buf;
_DIAGASSERT(p != NULL);
buf = XDR_INLINE(xdrs, 3 * BYTES_PER_XDR_UNIT);
if (buf == NULL) {
if (!xdr_u_int32_t(xdrs, &objp->prog)) {
return (FALSE);
}
if (!xdr_u_int32_t(xdrs, &objp->vers)) {
return (FALSE);
}
if (!xdr_u_int32_t(xdrs, &objp->proc)) {
return (FALSE);
}
} else {
IXDR_PUT_U_INT32(buf, objp->prog);
IXDR_PUT_U_INT32(buf, objp->vers);
IXDR_PUT_U_INT32(buf, objp->proc);
}
/*
* All the jugglery for just getting the size of the arguments
*/
lenposition = XDR_GETPOS(xdrs);
if (! xdr_u_int(xdrs, &(objp->args.args_len))) {
return (FALSE);
}
argposition = XDR_GETPOS(xdrs);
if (! (*objp->xdr_args)(xdrs, objp->args.args_val)) {
return (FALSE);
}
position = XDR_GETPOS(xdrs);
objp->args.args_len = (u_int)((u_long)position - (u_long)argposition);
XDR_SETPOS(xdrs, lenposition);
if (! xdr_u_int(xdrs, &(objp->args.args_len))) {
return (FALSE);
}
XDR_SETPOS(xdrs, position);
return (TRUE);
}
/*
* XDR remote call results
* written for XDR_DECODE direction only
*/
bool_t
xdr_rpcb_rmtcallres(xdrs, p)
XDR *xdrs;
struct rpcb_rmtcallres *p;
{
bool_t dummy;
struct r_rpcb_rmtcallres *objp = (struct r_rpcb_rmtcallres *)(void *)p;
_DIAGASSERT(p != NULL);
if (!xdr_string(xdrs, &objp->addr, (u_int)~0)) {
return (FALSE);
}
if (!xdr_u_int(xdrs, &objp->results.results_len)) {
return (FALSE);
}
dummy = (*(objp->xdr_res))(xdrs, objp->results.results_val);
return (dummy);
}
bool_t
xdr_netbuf(xdrs, objp)
XDR *xdrs;
struct netbuf *objp;
{
bool_t dummy;
_DIAGASSERT(objp != NULL);
if (!xdr_u_int32_t(xdrs, (u_int32_t *) &objp->maxlen)) {
return (FALSE);
}
dummy = xdr_bytes(xdrs, (char **)(void *)&(objp->buf),
(u_int *)&(objp->len), objp->maxlen);
return (dummy);
}