path: root/sunrpc/xdr.c

/*
 * xdr.c, Generic XDR routines implementation.
 *
 * Copyright (c) 2010, Oracle America, Inc.
 *
 * 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 the "Oracle America, 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.
 *
 * These are the "generic" xdr routines used to serialize and de-serialize
 * most common data items.  See xdr.h for more info on the interface to
 * xdr.
 */

#include <stdio.h>
#include <limits.h>
#include <string.h>
#include <libintl.h>
#include <wchar.h>
#include <stdint.h>

#include <rpc/types.h>
#include <rpc/xdr.h>
#include <shlib-compat.h>


/*
 * constants specific to the xdr "protocol"
 */
#define XDR_FALSE	((long) 0)
#define XDR_TRUE	((long) 1)
#define LASTUNSIGNED	((u_int) 0-1)

/*
 * for unit alignment
 */
static const char xdr_zero[BYTES_PER_XDR_UNIT] = {0, 0, 0, 0};

/*
 * Free a data structure using XDR
 * Not a filter, but a convenient utility nonetheless
 */
void
xdr_free (xdrproc_t proc, char *objp)
{
  XDR x;

  x.x_op = XDR_FREE;
  (*proc) (&x, objp);
}
#ifdef EXPORT_RPC_SYMBOLS
libc_hidden_def (xdr_free)
#else
libc_hidden_nolink_sunrpc (xdr_free, GLIBC_2_0)
#endif

/*
 * XDR nothing
 */
bool_t
xdr_void (void)
{
  return TRUE;
}
#ifdef EXPORT_RPC_SYMBOLS
libc_hidden_def (xdr_void)
#else
libc_hidden_nolink_sunrpc (xdr_void, GLIBC_2_0)
#endif

/*
 * XDR integers
 */
bool_t
xdr_int (XDR *xdrs, int *ip)
{

#if INT_MAX < LONG_MAX
  long l;

  switch (xdrs->x_op)
    {
    case XDR_ENCODE:
      l = (long) *ip;
      return XDR_PUTLONG (xdrs, &l);

    case XDR_DECODE:
      if (!XDR_GETLONG (xdrs, &l))
	{
	  return FALSE;
	}