13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync/* $Id$ */
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync/** @file
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * IPRT - ASN.1, Default Allocator.
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync */
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync/*
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * Copyright (C) 2006-2014 Oracle Corporation
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync *
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * available from http://www.virtualbox.org. This file is free software;
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * you can redistribute it and/or modify it under the terms of the GNU
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * General Public License (GPL) as published by the Free Software
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync *
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * The contents of this file may alternatively be used under the terms
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * of the Common Development and Distribution License Version 1.0
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * VirtualBox OSE distribution, in which case the provisions of the
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * CDDL are applicable instead of those of the GPL.
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync *
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * You may elect to license modified versions of this file under the
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * terms and conditions of either the GPL or the CDDL or both.
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync */
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync/*******************************************************************************
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync* Header Files *
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync*******************************************************************************/
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync#include "internal/iprt.h"
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync#include <iprt/asn1.h>
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync#include <iprt/mem.h>
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync#include <iprt/err.h>
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync#include <iprt/string.h>
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync/**
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * Aligns allocation sizes a little.
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync *
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * @returns Aligned size.
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync * @param cb Requested size.
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync */
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsyncstatic size_t rtAsn1DefaultAllocator_AlignSize(size_t cb)
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync{
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync if (cb >= 64)
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync return RT_ALIGN_Z(cb, 64);
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync if (cb >= 32)
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync return RT_ALIGN_Z(cb, 32);
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync if (cb >= 16)
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync return RT_ALIGN_Z(cb, 16);
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync return cb;
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync}
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync/** @interface_method_impl{RTASN1ALLOCATORVTABLE, pfnFree} */
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsyncstatic DECLCALLBACK(void) rtAsn1DefaultAllocator_Free(PCRTASN1ALLOCATORVTABLE pThis, PRTASN1ALLOCATION pAllocation, void *pv)
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync{
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync RTMemFree(pv);
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync pAllocation->cbAllocated = 0;
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync}
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync/** @interface_method_impl{RTASN1ALLOCATORVTABLE, pfnAlloc} */
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsyncstatic DECLCALLBACK(int) rtAsn1DefaultAllocator_Alloc(PCRTASN1ALLOCATORVTABLE pThis, PRTASN1ALLOCATION pAllocation,
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync void **ppv, size_t cb)
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync{
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync size_t cbAlloc = rtAsn1DefaultAllocator_AlignSize(cb);
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync void *pv = RTMemAllocZ(cbAlloc);
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync if (pv)
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync {
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync *ppv = pv;
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync pAllocation->cbAllocated = (uint32_t)cbAlloc;
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync return VINF_SUCCESS;
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync }
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync return VERR_NO_MEMORY;
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync}
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync/** @interface_method_impl{RTASN1ALLOCATORVTABLE, pfnRealloc} */
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsyncstatic DECLCALLBACK(int) rtAsn1DefaultAllocator_Realloc(PCRTASN1ALLOCATORVTABLE pThis, PRTASN1ALLOCATION pAllocation,
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync void *pvOld, void **ppvNew, size_t cbNew)
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync{
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync Assert(pvOld);
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync Assert(cbNew);
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync size_t cbAlloc = rtAsn1DefaultAllocator_AlignSize(cbNew);
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync void *pv = RTMemRealloc(pvOld, cbAlloc);
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync if (pv)
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync {
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync *ppvNew = pv;
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync pAllocation->cbAllocated = (uint32_t)cbAlloc;
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync return VINF_SUCCESS;
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync }
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync return VERR_NO_MEMORY;
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync}
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync/** The default ASN.1 allocator. */
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsyncRT_DECL_DATA_CONST(RTASN1ALLOCATORVTABLE const) g_RTAsn1DefaultAllocator =
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync{
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync rtAsn1DefaultAllocator_Free,
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync rtAsn1DefaultAllocator_Alloc,
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync rtAsn1DefaultAllocator_Realloc
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync};
13493ab7596e827b8d0caab2c89e635dd65f78f9vboxsync