| /* |
| * xdr_stdio.c, XDR implementation on standard i/o file. |
| * |
| * 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. |
| * |
| * 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 <rpc/types.h> |
| #include <stdio.h> |
| #include <rpc/xdr.h> |
| |
| #include <libio/iolibio.h> |
| #define fflush(s) _IO_fflush (s) |
| #define fread(p, m, n, s) _IO_fread (p, m, n, s) |
| #define ftell(s) _IO_ftell (s) |
| #define fwrite(p, m, n, s) _IO_fwrite (p, m, n, s) |
| |
| static bool_t xdrstdio_getlong (XDR *, long *); |
| static bool_t xdrstdio_putlong (XDR *, const long *); |
| static bool_t xdrstdio_getbytes (XDR *, caddr_t, u_int); |
| static bool_t xdrstdio_putbytes (XDR *, const char *, u_int); |
| static u_int xdrstdio_getpos (const XDR *); |
| static bool_t xdrstdio_setpos (XDR *, u_int); |
| static int32_t *xdrstdio_inline (XDR *, u_int); |
| static void xdrstdio_destroy (XDR *); |
| static bool_t xdrstdio_getint32 (XDR *, int32_t *); |
| static bool_t xdrstdio_putint32 (XDR *, const int32_t *); |
| |
| /* |
| * Ops vector for stdio type XDR |
| */ |
| static const struct xdr_ops xdrstdio_ops = |
| { |
| xdrstdio_getlong, /* deserialize a long int */ |
| xdrstdio_putlong, /* serialize 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 */ |
| xdrstdio_getint32, /* deserialize a int */ |
| xdrstdio_putint32 /* serialize a int */ |
| }; |
| |
| /* |
| * 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; |
| /* We have to add the const since the `struct xdr_ops' in `struct XDR' |
| is not `const'. */ |
| xdrs->x_ops = (struct xdr_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) |
| { |
| u_int32_t mycopy; |
| |
| if (fread ((caddr_t) &mycopy, 4, 1, (FILE *) xdrs->x_private) != 1) |
| return FALSE; |
| *lp = (long) ntohl (mycopy); |
| return TRUE; |
| } |
| |
| static bool_t |
| xdrstdio_putlong (XDR *xdrs, const long *lp) |
| { |
| int32_t mycopy = htonl ((u_int32_t) *lp); |
| |
| if (fwrite ((caddr_t) &mycopy, 4, 1, (FILE *) xdrs->x_private) != 1) |
| return FALSE; |
| return TRUE; |
| } |
| |
| static bool_t |
| xdrstdio_getbytes (XDR *xdrs, const caddr_t addr, u_int len) |
| { |
| if ((len != 0) && (fread (addr, (int) len, 1, |
| (FILE *) xdrs->x_private) != 1)) |
| return FALSE; |
| return TRUE; |
| } |
| |
| static bool_t |
| xdrstdio_putbytes (XDR *xdrs, const char *addr, u_int len) |
| { |
| if ((len != 0) && (fwrite (addr, (int) len, 1, |
| (FILE *) xdrs->x_private) != 1)) |
| return FALSE; |
| return TRUE; |
| } |
| |
| static u_int |
| xdrstdio_getpos (const 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 int32_t * |
| xdrstdio_inline (XDR *xdrs, u_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; |
| } |
| |
| static bool_t |
| xdrstdio_getint32 (XDR *xdrs, int32_t *ip) |
| { |
| int32_t mycopy; |
| |
| if (fread ((caddr_t) &mycopy, 4, 1, (FILE *) xdrs->x_private) != 1) |
| return FALSE; |
| *ip = ntohl (mycopy); |
| return TRUE; |
| } |
| |
| static bool_t |
| xdrstdio_putint32 (XDR *xdrs, const int32_t *ip) |
| { |
| int32_t mycopy = htonl (*ip); |
| |
| ip = &mycopy; |
| if (fwrite ((caddr_t) ip, 4, 1, (FILE *) xdrs->x_private) != 1) |
| return FALSE; |
| return TRUE; |
| } |
| #ifdef EXPORT_RPC_SYMBOLS |
| libc_hidden_def (xdrstdio_create) |
| #else |
| libc_hidden_nolink_sunrpc (xdrstdio_create, GLIBC_2_0) |
| #endif |