--- /dev/null
+/*
+ * Copyright (c) 2006,2011,2014 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+/* $NetBSD: xdr_mem.c,v 1.15 2000/01/22 22:19:18 mycroft Exp $ */
+
+/*
+ * 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
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char *sccsid = "@(#)xdr_mem.c 1.19 87/08/11 Copyr 1984 Sun Micro";
+static char *sccsid = "@(#)xdr_mem.c 2.1 88/07/29 4.0 RPCSRC";
+#endif
+#include <sys/cdefs.h>
+
+/*
+ * xdr_mem.h, XDR implementation using memory buffers.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * If you have some data to be interpreted as external data representation
+ * or to be converted to external data representation in a memory buffer,
+ * then this is the package for you.
+ *
+ */
+
+#include <sys/types.h>
+
+#include <netinet/in.h>
+
+#include <string.h>
+
+#include "sec_xdr.h"
+
+static void sec_xdrmem_destroy(XDR *);
+
+#ifdef __LP64__
+#define long_callback_ptr_t int *
+#else
+#define long_callback_ptr_t long *
+#endif
+static bool_t sec_xdrmem_getlong_aligned(XDR *, long_callback_ptr_t);
+static bool_t sec_xdrmem_putlong_aligned(XDR *, const long_callback_ptr_t);
+static bool_t sec_xdrmem_getlong_unaligned(XDR *, long_callback_ptr_t);
+static bool_t sec_xdrmem_putlong_unaligned(XDR *, const long_callback_ptr_t);
+
+static bool_t sec_xdrmem_getbytes(XDR *, char *, u_int);
+static bool_t sec_xdrmem_putbytes(XDR *, const char *, u_int);
+/* XXX: w/64-bit pointers, u_int not enough! */
+static u_int sec_xdrmem_getpos(XDR *);
+static bool_t sec_xdrmem_setpos(XDR *, u_int);
+static int32_t *sec_xdrmem_inline_aligned(XDR *, u_int);
+static int32_t *sec_xdrmem_inline_unaligned(XDR *, u_int);
+
+static const struct xdr_ops sec_xdrmem_ops_aligned = {
+ sec_xdrmem_getlong_aligned,
+ sec_xdrmem_putlong_aligned,
+ sec_xdrmem_getbytes,
+ sec_xdrmem_putbytes,
+ sec_xdrmem_getpos,
+ sec_xdrmem_setpos,
+ sec_xdrmem_inline_aligned,
+ sec_xdrmem_destroy
+};
+
+static const struct xdr_ops sec_xdrmem_ops_unaligned = {
+ sec_xdrmem_getlong_unaligned,
+ sec_xdrmem_putlong_unaligned,
+ sec_xdrmem_getbytes,
+ sec_xdrmem_putbytes,
+ sec_xdrmem_getpos,
+ sec_xdrmem_setpos,
+ sec_xdrmem_inline_unaligned,
+ sec_xdrmem_destroy
+};
+
+/*
+ * The procedure sec_xdrmem_create initializes a stream descriptor for a
+ * memory buffer.
+ */
+void
+sec_xdrmem_create(xdrs, addr, size, op)
+ XDR *xdrs;
+ char *addr;
+ u_int size;
+ enum xdr_op op;
+{
+ xdrs->x_op = op;
+ xdrs->x_ops = ((unsigned long)addr & (sizeof(int32_t) - 1))
+ ? &sec_xdrmem_ops_unaligned : &sec_xdrmem_ops_aligned;
+ xdrs->x_private = xdrs->x_base = addr;
+ xdrs->x_public = NULL;
+ xdrs->x_handy = size;
+}
+
+/*ARGSUSED*/
+static void
+sec_xdrmem_destroy(xdrs)
+ XDR *xdrs;
+{
+
+}
+
+static bool_t
+sec_xdrmem_getlong_aligned(xdrs, lp)
+ XDR *xdrs;
+ long_callback_ptr_t lp;
+{
+ if (xdrs->x_handy < sizeof(int32_t))
+ return (FALSE);
+ xdrs->x_handy -= sizeof(int32_t);
+ if (lp) *lp = ntohl(*(u_int32_t *)xdrs->x_private);
+ xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t);
+ return (TRUE);
+}
+
+static bool_t
+sec_xdrmem_putlong_aligned(xdrs, lp)
+ XDR *xdrs;
+ const long_callback_ptr_t lp;
+{
+ if (xdrs->x_handy < sizeof(int32_t))
+ return (FALSE);
+ xdrs->x_handy -= sizeof(int32_t);
+ if (lp) *(u_int32_t *)xdrs->x_private = htonl((u_int32_t)*lp);
+ xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t);
+ return (TRUE);
+}
+
+static bool_t
+sec_xdrmem_getlong_unaligned(xdrs, lp)
+ XDR *xdrs;
+ long_callback_ptr_t lp;
+{
+ u_int32_t l;
+
+ if (xdrs->x_handy < sizeof(int32_t))
+ return (FALSE);
+ xdrs->x_handy -= sizeof(int32_t);
+ memmove(&l, xdrs->x_private, sizeof(int32_t));
+ if (lp) *lp = ntohl(l);
+ xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t);
+ return (TRUE);
+}
+
+static bool_t
+sec_xdrmem_putlong_unaligned(xdrs, lp)
+ XDR *xdrs;
+ const long_callback_ptr_t lp;
+{
+ u_int32_t l = 0;
+
+ if (xdrs->x_handy < sizeof(int32_t))
+ return (FALSE);
+ xdrs->x_handy -= sizeof(int32_t);
+ if (lp) l = htonl((u_int32_t)*lp);
+ memmove(xdrs->x_private, &l, sizeof(int32_t));
+ xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t);
+ return (TRUE);
+}
+
+static bool_t
+sec_xdrmem_getbytes(xdrs, addr, len)
+ XDR *xdrs;
+ char *addr;
+ u_int len;
+{
+ if (xdrs->x_handy < len)
+ return (FALSE);
+ xdrs->x_handy -= len;
+ if (addr) memmove(addr, xdrs->x_private, len);
+ xdrs->x_private = (char *)xdrs->x_private + len;
+ return (TRUE);
+}
+
+static bool_t
+sec_xdrmem_putbytes(xdrs, addr, len)
+ XDR *xdrs;
+ const char *addr;
+ u_int len;
+{
+ if (xdrs->x_handy < len)
+ return (FALSE);
+ xdrs->x_handy -= len;
+ if (addr) memmove(xdrs->x_private, addr, len);
+ xdrs->x_private = (char *)xdrs->x_private + len;
+ return (TRUE);
+}
+
+static u_int
+sec_xdrmem_getpos(xdrs)
+ XDR *xdrs;
+{
+ /* XXX w/64-bit pointers, u_int not enough! */
+ return (u_int)((u_long)xdrs->x_private - (u_long)xdrs->x_base);
+}
+
+static bool_t
+sec_xdrmem_setpos(xdrs, pos)
+ XDR *xdrs;
+ u_int pos;
+{
+ char *newaddr = xdrs->x_base + pos;
+ char *lastaddr = (char *)xdrs->x_private + xdrs->x_handy;
+
+ if (newaddr > lastaddr)
+ return (FALSE);
+ xdrs->x_private = newaddr;
+ xdrs->x_handy = (u_int)(lastaddr - newaddr); /* XXX sizeof(u_int) <? sizeof(ptrdiff_t) */
+ return (TRUE);
+}
+
+static int32_t *
+sec_xdrmem_inline_aligned(xdrs, len)
+ XDR *xdrs;
+ u_int len;
+{
+ int32_t *buf = 0;
+
+ if (xdrs->x_handy >= len) {
+ xdrs->x_handy -= len;
+ buf = (int32_t *)xdrs->x_private;
+ xdrs->x_private = (char *)xdrs->x_private + len;
+ }
+ return (buf);
+}
+
+/* ARGSUSED */
+static int32_t *
+sec_xdrmem_inline_unaligned(xdrs, len)
+ XDR *xdrs;
+ u_int len;
+{
+ return (0);
+}
+
+/**
+ * This is almost a straight copy of the standard implementation, except
+ * that all calls made that move memory don't do so if passed a NULL dest.
+ * getbytes in particular when called from xdr_bytes during sizing of a decode
+ * needs this.
+ */
projects / apple / security.git / blobdiff