/* * 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 */ /* * 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 <rpc/types.h> #include <stdio.h> #include <rpc/xdr.h> #ifdef USE_IN_LIBIO # 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) #endif 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 attribute_unused, u_int len attribute_unused) { /* * 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; }