1 | /* $Id: asn1-ut-null.cpp 69111 2017-10-17 14:26:02Z 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) 2006-2017 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * The contents of this file may alternatively be used under the terms
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18 | * of the Common Development and Distribution License Version 1.0
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19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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20 | * VirtualBox OSE distribution, in which case the provisions of the
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21 | * CDDL are applicable instead of those of the GPL.
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22 | *
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23 | * You may elect to license modified versions of this file under the
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24 | * terms and conditions of either the GPL or the CDDL or both.
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25 | */
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26 |
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27 |
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28 | /*********************************************************************************************************************************
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29 | * Header Files *
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30 | *********************************************************************************************************************************/
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31 | #include "internal/iprt.h"
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32 | #include <iprt/asn1.h>
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33 |
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34 | #include <iprt/err.h>
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35 | #include <iprt/string.h>
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36 |
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37 | #include <iprt/formats/asn1.h>
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38 |
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39 |
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40 | /*
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41 | * ASN.1 NULL - Special Methods.
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42 | */
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43 |
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44 |
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45 | /*
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46 | * ASN.1 NULL - Standard Methods.
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47 | */
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48 |
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49 |
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50 | RT_DECL_DATA_CONST(RTASN1COREVTABLE const) g_RTAsn1Null_Vtable =
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51 | {
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52 | "RTAsn1Null",
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53 | sizeof(RTASN1NULL),
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54 | ASN1_TAG_NULL,
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55 | ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_PRIMITIVE,
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56 | 0,
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57 | (PFNRTASN1COREVTDTOR)RTAsn1Null_Delete,
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58 | (PFNRTASN1COREVTENUM)RTAsn1Null_Enum,
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59 | (PFNRTASN1COREVTCLONE)RTAsn1Null_Clone,
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60 | (PFNRTASN1COREVTCOMPARE)RTAsn1Null_Compare,
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61 | (PFNRTASN1COREVTCHECKSANITY)RTAsn1Null_CheckSanity,
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62 | NULL,
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63 | NULL
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64 | };
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65 |
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66 |
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67 | RTDECL(int) RTAsn1Null_Init(PRTASN1NULL pThis, PCRTASN1ALLOCATORVTABLE pAllocator)
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68 | {
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69 | RT_NOREF_PV(pAllocator);
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70 | return RTAsn1Core_InitEx(&pThis->Asn1Core, ASN1_TAG_NULL, ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_PRIMITIVE,
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71 | &g_RTAsn1Null_Vtable, RTASN1CORE_F_PRESENT | RTASN1CORE_F_PRIMITE_TAG_STRUCT);
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72 | }
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73 |
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74 |
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75 | RTDECL(int) RTAsn1Null_Clone(PRTASN1NULL pThis, PCRTASN1NULL pSrc, PCRTASN1ALLOCATORVTABLE pAllocator)
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76 | {
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77 | AssertPtr(pSrc); AssertPtr(pThis); AssertPtr(pAllocator); RT_NOREF_PV(pAllocator);
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78 | RT_ZERO(*pThis);
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79 | if (RTAsn1Null_IsPresent(pSrc))
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80 | {
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81 | AssertReturn(pSrc->Asn1Core.pOps == &g_RTAsn1Null_Vtable, VERR_INTERNAL_ERROR_3);
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82 | AssertReturn(pSrc->Asn1Core.cb == 0, VERR_INTERNAL_ERROR_4);
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83 |
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84 | int rc = RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core);
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85 | if (RT_FAILURE(rc))
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86 | return rc;
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87 | }
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88 | return VINF_SUCCESS;
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89 | }
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90 |
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91 |
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92 | RTDECL(void) RTAsn1Null_Delete(PRTASN1NULL pThis)
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93 | {
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94 | if ( pThis
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95 | && RTAsn1Null_IsPresent(pThis))
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96 | {
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97 | Assert(pThis->Asn1Core.pOps == &g_RTAsn1Null_Vtable);
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98 | RT_ZERO(*pThis);
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99 | }
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100 | }
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101 |
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102 |
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103 | RTDECL(int) RTAsn1Null_Enum(PRTASN1NULL pThis, PFNRTASN1ENUMCALLBACK pfnCallback, uint32_t uDepth, void *pvUser)
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104 | {
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105 | RT_NOREF_PV(pThis); RT_NOREF_PV(pfnCallback); RT_NOREF_PV(uDepth); RT_NOREF_PV(pvUser);
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106 | Assert(pThis && (!RTAsn1Null_IsPresent(pThis) || pThis->Asn1Core.pOps == &g_RTAsn1Null_Vtable));
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107 |
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108 | /* No children to enumerate. */
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109 | return VINF_SUCCESS;
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110 | }
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111 |
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112 |
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113 | RTDECL(int) RTAsn1Null_Compare(PCRTASN1NULL pLeft, PCRTASN1NULL pRight)
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114 | {
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115 | Assert(pLeft && (!RTAsn1Null_IsPresent(pLeft) || pLeft->Asn1Core.pOps == &g_RTAsn1Null_Vtable));
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116 | Assert(pRight && (!RTAsn1Null_IsPresent(pRight) || pRight->Asn1Core.pOps == &g_RTAsn1Null_Vtable));
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117 |
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118 | return (int)RTAsn1Null_IsPresent(pLeft) - (int)RTAsn1Null_IsPresent(pRight);
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119 | }
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120 |
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121 |
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122 | RTDECL(int) RTAsn1Null_CheckSanity(PCRTASN1NULL pThis, uint32_t fFlags, PRTERRINFO pErrInfo, const char *pszErrorTag)
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123 | {
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124 | RT_NOREF_PV(fFlags);
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125 | if (RT_UNLIKELY(!RTAsn1Null_IsPresent(pThis)))
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126 | return RTErrInfoSetF(pErrInfo, VERR_ASN1_NOT_PRESENT, "%s: Missing (NULL).", pszErrorTag);
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127 | return VINF_SUCCESS;
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128 | }
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129 |
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130 | /* No NULL object collections. */
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131 |
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