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/* @(#)xdr_stdio.c 2.1 88/07/29 4.0 RPCSRC */
/*
* Copyright (c) 2010, Oracle America, Inc.
*
* All rights reserved.
*
* 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.
*/
#if !defined(lint) && defined(SCCSIDS)
static char sccsid[] = "@(#)xdr_stdio.c 1.16 87/08/11 Copyr 1984 Sun Micro";
#endif
/*
* xdr_stdio.c, XDR implementation on standard i/o file.
*
* This set of routines implements a XDR on a stdio stream.
* XDR_ENCODE serializes onto the stream, XDR_DECODE de-serializes
* from the stream.
*/
#include <gssrpc/types.h>
#include <stdio.h>
#include <gssrpc/xdr.h>
static bool_t xdrstdio_getlong(XDR *, long *);
static bool_t xdrstdio_putlong(XDR *, long *);
static bool_t xdrstdio_getbytes(XDR *, caddr_t, u_int);
static bool_t xdrstdio_putbytes(XDR *, caddr_t, u_int);
static u_int xdrstdio_getpos(XDR *);
static bool_t xdrstdio_setpos(XDR *, u_int);
static rpc_inline_t * xdrstdio_inline(XDR *, int);
static void xdrstdio_destroy(XDR *);
/*
* Ops vector for stdio type XDR
*/
static struct xdr_ops xdrstdio_ops = {
xdrstdio_getlong, /* deseraialize a long int */
xdrstdio_putlong, /* seraialize a long int */
xdrstdio_getbytes, /* deserialize counted bytes */
xdrstdio_putbytes, /* serialize counted bytes */
xdrstdio_getpos, /* get offset in the stream */
xdrstdio_setpos, /* set offset in the stream */
xdrstdio_inline, /* prime stream for inline macros */
xdrstdio_destroy /* destroy stream */
};
/*
* Initialize a stdio xdr stream.
* Sets the xdr stream handle xdrs for use on the stream file.
* Operation flag is set to op.
*/
void
xdrstdio_create(XDR *xdrs, FILE *file, enum xdr_op op)
{
xdrs->x_op = op;
xdrs->x_ops = &xdrstdio_ops;
xdrs->x_private = (caddr_t)file;
xdrs->x_handy = 0;
xdrs->x_base = 0;
}
/*
* Destroy a stdio xdr stream.
* Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create.
*/
static void
xdrstdio_destroy(XDR *xdrs)
{
(void)fflush((FILE *)xdrs->x_private);
/* xx should we close the file ?? */
}
static bool_t
xdrstdio_getlong(XDR *xdrs, long *lp)
{
uint32_t tmp;
if (fread((caddr_t)&tmp,
sizeof(uint32_t), 1, (FILE *)xdrs->x_private) != 1)
return (FALSE);
*lp = (long)ntohl(tmp);
return (TRUE);
}
static bool_t
xdrstdio_putlong(XDR *xdrs, long *lp)
{
uint32_t mycopy = htonl((uint32_t)*lp);
if (fwrite((caddr_t)&mycopy, sizeof(uint32_t), 1, (FILE *)xdrs->x_private) != 1)
return (FALSE);
return (TRUE);
}
static bool_t
xdrstdio_getbytes(XDR *xdrs, caddr_t addr, u_int len)
{
if ((len != 0) && (fread(addr, (size_t)len, 1,
(FILE *)xdrs->x_private) != 1))
return (FALSE);
return (TRUE);
}
static bool_t
xdrstdio_putbytes(XDR *xdrs, caddr_t addr, u_int len)
{
if ((len != 0) && (fwrite(addr, (size_t)len, 1,
(FILE *)xdrs->x_private) != 1))
return (FALSE);
return (TRUE);
}
static u_int
xdrstdio_getpos(XDR *xdrs)
{
return ((u_int) ftell((FILE *)xdrs->x_private));
}
static bool_t
xdrstdio_setpos(XDR *xdrs, u_int pos)
{
return ((fseek((FILE *)xdrs->x_private, (long)pos, 0) < 0) ?
FALSE : TRUE);
}
static rpc_inline_t *
xdrstdio_inline(XDR *xdrs, int len)
{
/*
* Must do some work to implement this: must insure
* enough data in the underlying stdio buffer,
* that the buffer is aligned so that we can indirect through a
* long *, and stuff this pointer in xdrs->x_buf. Doing
* a fread or fwrite to a scratch buffer would defeat
* most of the gains to be had here and require storage
* management on this buffer, so we don't do this.
*/
return (NULL);
}
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