/* * Copyright (c) 2009, Sun Microsystems, 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 Sun Microsystems, 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. */ /* * xdr_stdio.c, XDR implementation on standard i/o file. * * Copyright (C) 1984, Sun Microsystems, Inc. * * 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 #include #include #include "xdr_private.h" #ifndef ntohl # define ntohl(x) xdr_ntohl(x) #endif #ifndef htonl # define htonl(x) xdr_htonl(x) #endif static void _EXFUN (xdrstdio_destroy, (XDR *)); static bool_t _EXFUN (xdrstdio_getlong, (XDR *, long *)); static bool_t _EXFUN (xdrstdio_putlong, (XDR *, _CONST long *)); static bool_t _EXFUN (xdrstdio_getbytes, (XDR *, char *, u_int)); static bool_t _EXFUN (xdrstdio_putbytes, (XDR *, _CONST char *, u_int)); static u_int _EXFUN (xdrstdio_getpos, (XDR *)); static bool_t _EXFUN (xdrstdio_setpos, (XDR *, u_int)); static int32_t * _EXFUN (xdrstdio_inline, (XDR *, u_int)); static bool_t _EXFUN (xdrstdio_getint32, (XDR*, int32_t *)); static bool_t _EXFUN (xdrstdio_putint32, (XDR*, _CONST int32_t *)); /* * Ops vector for stdio type XDR */ static _CONST 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 */ xdrstdio_getint32, /* deseraialize an int */ xdrstdio_putint32 /* seraialize an long 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 _DEFUN (xdrstdio_create, (xdrs, file, op), XDR * xdrs _AND FILE * file _AND enum xdr_op op) { xdrs->x_op = op; xdrs->x_ops = (struct xdr_ops *) &xdrstdio_ops; xdrs->x_private = (void *) 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 _DEFUN (xdrstdio_destroy, (xdrs), XDR * xdrs) { (void) fflush ((FILE *) xdrs->x_private); /* XXX: should we close the file ?? */ } static bool_t _DEFUN (xdrstdio_getlong, (xdrs, lp), XDR * xdrs _AND long *lp) { u_int32_t temp; if (fread (&temp, sizeof (int32_t), 1, (FILE *) xdrs->x_private) != 1) return FALSE; *lp = (long) (int32_t) ntohl (temp); return TRUE; } static bool_t _DEFUN (xdrstdio_putlong, (xdrs, lp), XDR * xdrs _AND _CONST long *lp) { u_int32_t temp = htonl ((u_int32_t) * lp); if (fwrite (&temp, sizeof (int32_t), 1, (FILE *) xdrs->x_private) != 1) return FALSE; return TRUE; } static bool_t _DEFUN (xdrstdio_getbytes, (xdrs, addr, len), XDR * xdrs _AND char *addr _AND u_int len) { if ((len != 0) && (fread (addr, (size_t) len, 1, (FILE *) xdrs->x_private) != 1)) return FALSE; return TRUE; } static bool_t _DEFUN (xdrstdio_putbytes, (xdrs, addr, len), XDR * xdrs _AND _CONST char *addr _AND u_int len) { if ((len != 0) && (fwrite (addr, (size_t) len, 1, (FILE *) xdrs->x_private) != 1)) return FALSE; return TRUE; } static u_int _DEFUN (xdrstdio_getpos, (xdrs), XDR * xdrs) { return ((u_int) ftell ((FILE *) xdrs->x_private)); } static bool_t _DEFUN (xdrstdio_setpos, (xdrs, pos), XDR * xdrs _AND u_int pos) { return ((fseek ((FILE *) xdrs->x_private, (long) pos, 0) < 0) ? FALSE : TRUE); } /* ARGSUSED */ static int32_t * _DEFUN (xdrstdio_inline, (xdrs, len), XDR * xdrs _AND 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 _DEFUN (xdrstdio_getint32, (xdrs, ip), XDR *xdrs _AND int32_t *ip) { int32_t temp; if (fread (&temp, sizeof (int32_t), 1, (FILE *) xdrs->x_private) != 1) return FALSE; *ip = ntohl (temp); return TRUE; } static bool_t _DEFUN (xdrstdio_putint32, (xdrs, ip), XDR *xdrs _AND _CONST int32_t *ip) { int32_t temp = htonl (*ip); if (fwrite (&temp, sizeof (int32_t), 1, (FILE *) xdrs->x_private) != 1) return FALSE; return TRUE; }