-/*
- * Copyright (c) 2006,2011,2013-2014 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_array.c,v 1.12 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_array.c 1.10 87/08/11 Copyr 1984 Sun Micro";
-static char *sccsid = "@(#)xdr_array.c 2.1 88/07/29 4.0 RPCSRC";
-#endif
-#include <sys/cdefs.h>
-
-/*
- * xdr_array.c, Generic XDR routines impelmentation.
- *
- * Copyright (C) 1984, Sun Microsystems, Inc.
- *
- * These are the "non-trivial" xdr primitives used to serialize and de-serialize
- * arrays. See xdr.h for more info on the interface to xdr.
- */
-
-#include <err.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-#include "sec_xdr.h"
-
-/*
- * XDR an array of arbitrary elements
- * *addrp is a pointer to the array, *sizep is the number of elements.
- * If addrp is NULL (*sizep * elsize) bytes are allocated.
- * elsize is the size (in bytes) of each element, and elproc is the
- * xdr procedure to call to handle each element of the array.
- */
-bool_t
-sec_xdr_array(XDR *xdrs, uint8_t **addrp, u_int *sizep, u_int maxsize, u_int elsize, xdrproc_t elproc)
-{
- u_int i;
- bool_t stat = TRUE;
-
- u_int c = sizep ? *sizep : 0; /* the actual element count */
- /* like strings, arrays are really counted arrays */
- if (!xdr_u_int(xdrs, &c))
- return (FALSE);
-
- if (sizep && (xdrs->x_op == XDR_DECODE))
- *sizep = c;
-
- // XXX/cs on decode if c == 0 return
-
- if ((c > maxsize || UINT_MAX/elsize < c) && (xdrs->x_op != XDR_FREE))
- return (FALSE);
-
- if (elsize > 1024) {
- // Structure suspiciously large: 1024 is arbitrary upper bound
- // for struct sizes (non-nested size)
- assert(FALSE);
- return (FALSE);
- }
-
- u_int nodesize = c * elsize;
- uint8_t *target = addrp ? *addrp : NULL;
-
- uint8_t obj[elsize];
-
- bool_t sizeof_alloc = sec_xdr_arena_size_allocator(xdrs);
-
- /*
- * if we are deserializing, we may need to allocate an array.
- * We also save time by checking for a null array if we are freeing.
- */
- if (target == NULL) {
- switch (xdrs->x_op) {
- case XDR_DECODE:
- if (c == 0)
- return (TRUE);
- if (!sec_mem_alloc(xdrs, nodesize, &target))
- return (FALSE);
- if (!target)
- target = &obj[0];
- if (!sizeof_alloc)
- *addrp = target;
- break;
-
- case XDR_FREE:
- return (TRUE);
-
- case XDR_ENCODE:
- break;
- }
- }
-
- /*
- * now we xdr each element of array
- */
- for (i = 0; (i < c) && stat; i++) {
- if ((xdrs->x_op == XDR_DECODE) && sizeof_alloc)
- memset(obj, 0, elsize);
- stat = (*elproc)(xdrs, target, 0);
- if ((xdrs->x_op == XDR_ENCODE) || !sizeof_alloc)
- target += elsize;
- }
-
- /*
- * the array may need freeing
- */
- if (xdrs->x_op == XDR_FREE) {
- sec_mem_free(xdrs, *addrp, nodesize);
- *addrp = NULL;
- }
- return (stat);
-}
-
-/**
- * This is almost a straight copy of the standard implementation, except
- * that all calls made that allocate memory can defer to an alternate
- * mechanism, with the purpose to allocate from one block of memory on
- * *decode*
- */
projects / apple / security.git / blobdiff