| 1 | /* $Id: asn1-ut-null.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - ASN.1, NULL type.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include "internal/iprt.h"
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| 42 | #include <iprt/asn1.h>
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| 43 |
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| 44 | #include <iprt/err.h>
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| 45 | #include <iprt/string.h>
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| 46 |
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| 47 | #include <iprt/formats/asn1.h>
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| 48 |
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| 49 |
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| 50 | /*
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| 51 | * ASN.1 NULL - Special Methods.
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| 52 | */
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| 53 |
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| 54 |
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| 55 | /*
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| 56 | * ASN.1 NULL - Standard Methods.
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| 57 | */
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| 58 |
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| 59 |
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| 60 | RT_DECL_DATA_CONST(RTASN1COREVTABLE const) g_RTAsn1Null_Vtable =
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| 61 | {
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| 62 | "RTAsn1Null",
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| 63 | sizeof(RTASN1NULL),
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| 64 | ASN1_TAG_NULL,
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| 65 | ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_PRIMITIVE,
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| 66 | 0,
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| 67 | (PFNRTASN1COREVTDTOR)RTAsn1Null_Delete,
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| 68 | (PFNRTASN1COREVTENUM)RTAsn1Null_Enum,
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| 69 | (PFNRTASN1COREVTCLONE)RTAsn1Null_Clone,
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| 70 | (PFNRTASN1COREVTCOMPARE)RTAsn1Null_Compare,
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| 71 | (PFNRTASN1COREVTCHECKSANITY)RTAsn1Null_CheckSanity,
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| 72 | NULL,
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| 73 | NULL
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| 74 | };
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| 75 |
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| 76 |
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| 77 | RTDECL(int) RTAsn1Null_Init(PRTASN1NULL pThis, PCRTASN1ALLOCATORVTABLE pAllocator)
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| 78 | {
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| 79 | RT_NOREF_PV(pAllocator);
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| 80 | return RTAsn1Core_InitEx(&pThis->Asn1Core, ASN1_TAG_NULL, ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_PRIMITIVE,
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| 81 | &g_RTAsn1Null_Vtable, RTASN1CORE_F_PRESENT | RTASN1CORE_F_PRIMITE_TAG_STRUCT);
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| 82 | }
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| 83 |
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| 84 |
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| 85 | RTDECL(int) RTAsn1Null_Clone(PRTASN1NULL pThis, PCRTASN1NULL pSrc, PCRTASN1ALLOCATORVTABLE pAllocator)
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| 86 | {
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| 87 | AssertPtr(pSrc); AssertPtr(pThis); AssertPtr(pAllocator); RT_NOREF_PV(pAllocator);
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| 88 | RT_ZERO(*pThis);
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| 89 | if (RTAsn1Null_IsPresent(pSrc))
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| 90 | {
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| 91 | AssertReturn(pSrc->Asn1Core.pOps == &g_RTAsn1Null_Vtable, VERR_INTERNAL_ERROR_3);
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| 92 | AssertReturn(pSrc->Asn1Core.cb == 0, VERR_INTERNAL_ERROR_4);
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| 93 |
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| 94 | int rc = RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core);
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| 95 | if (RT_FAILURE(rc))
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| 96 | return rc;
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| 97 | }
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| 98 | return VINF_SUCCESS;
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| 99 | }
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| 100 |
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| 101 |
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| 102 | RTDECL(void) RTAsn1Null_Delete(PRTASN1NULL pThis)
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| 103 | {
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| 104 | if ( pThis
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| 105 | && RTAsn1Null_IsPresent(pThis))
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| 106 | {
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| 107 | Assert(pThis->Asn1Core.pOps == &g_RTAsn1Null_Vtable);
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| 108 | RT_ZERO(*pThis);
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| 109 | }
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| 110 | }
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| 111 |
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| 112 |
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| 113 | RTDECL(int) RTAsn1Null_Enum(PRTASN1NULL pThis, PFNRTASN1ENUMCALLBACK pfnCallback, uint32_t uDepth, void *pvUser)
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| 114 | {
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| 115 | RT_NOREF_PV(pThis); RT_NOREF_PV(pfnCallback); RT_NOREF_PV(uDepth); RT_NOREF_PV(pvUser);
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| 116 | Assert(pThis && (!RTAsn1Null_IsPresent(pThis) || pThis->Asn1Core.pOps == &g_RTAsn1Null_Vtable));
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| 117 |
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| 118 | /* No children to enumerate. */
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| 119 | return VINF_SUCCESS;
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| 120 | }
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| 121 |
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| 122 |
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| 123 | RTDECL(int) RTAsn1Null_Compare(PCRTASN1NULL pLeft, PCRTASN1NULL pRight)
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| 124 | {
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| 125 | Assert(pLeft && (!RTAsn1Null_IsPresent(pLeft) || pLeft->Asn1Core.pOps == &g_RTAsn1Null_Vtable));
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| 126 | Assert(pRight && (!RTAsn1Null_IsPresent(pRight) || pRight->Asn1Core.pOps == &g_RTAsn1Null_Vtable));
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| 127 |
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| 128 | return (int)RTAsn1Null_IsPresent(pLeft) - (int)RTAsn1Null_IsPresent(pRight);
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| 129 | }
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| 130 |
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| 131 |
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| 132 | RTDECL(int) RTAsn1Null_CheckSanity(PCRTASN1NULL pThis, uint32_t fFlags, PRTERRINFO pErrInfo, const char *pszErrorTag)
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| 133 | {
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| 134 | RT_NOREF_PV(fFlags);
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| 135 | if (RT_UNLIKELY(!RTAsn1Null_IsPresent(pThis)))
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| 136 | return RTErrInfoSetF(pErrInfo, VERR_ASN1_NOT_PRESENT, "%s: Missing (NULL).", pszErrorTag);
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| 137 | return VINF_SUCCESS;
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| 138 | }
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| 139 |
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| 140 | /* No NULL object collections. */
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| 141 |
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