1 | /* $Id: asn1-ut-core.cpp 69111 2017-10-17 14:26:02Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - ASN.1, Generic Core 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/alloca.h>
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35 | #include <iprt/bignum.h>
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36 | #include <iprt/ctype.h>
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37 | #include <iprt/err.h>
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38 | #include <iprt/string.h>
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39 | #include <iprt/uni.h>
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40 |
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41 | #include <iprt/formats/asn1.h>
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42 |
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43 |
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44 | /*
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45 | * ASN.1 Core - Special methods (for all applications of RTASN1CORE).
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46 | */
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47 |
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48 | RTDECL(int) RTAsn1Core_SetTagAndFlags(PRTASN1CORE pAsn1Core, uint32_t uTag, uint8_t fClass)
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49 | {
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50 | if (!(pAsn1Core->fFlags & RTASN1CORE_F_TAG_IMPLICIT))
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51 | {
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52 | pAsn1Core->fRealClass = pAsn1Core->fClass;
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53 | pAsn1Core->uRealTag = pAsn1Core->uTag;
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54 | Assert(pAsn1Core->uRealTag == pAsn1Core->uTag);
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55 | pAsn1Core->fFlags |= RTASN1CORE_F_TAG_IMPLICIT;
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56 | }
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57 | pAsn1Core->uTag = uTag;
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58 | pAsn1Core->fClass = fClass;
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59 | return VINF_SUCCESS;
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60 | }
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61 |
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62 |
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63 | RTDECL(int) RTAsn1Core_ChangeTag(PRTASN1CORE pAsn1Core, uint32_t uTag)
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64 | {
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65 | if (!(pAsn1Core->fFlags & RTASN1CORE_F_TAG_IMPLICIT))
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66 | pAsn1Core->uTag = uTag;
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67 | pAsn1Core->uRealTag = uTag;
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68 | return VINF_SUCCESS;
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69 | }
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70 |
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71 |
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72 | RTDECL(void) RTAsn1Core_ResetImplict(PRTASN1CORE pThis)
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73 | {
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74 | AssertPtr(pThis);
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75 | if (pThis->fFlags & RTASN1CORE_F_TAG_IMPLICIT)
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76 | {
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77 | pThis->fFlags &= ~RTASN1CORE_F_TAG_IMPLICIT;
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78 | pThis->uTag = pThis->uRealTag;
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79 | pThis->fClass = pThis->fRealClass;
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80 | }
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81 | }
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82 |
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83 |
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84 | RTDECL(int) RTAsn1Core_InitEx(PRTASN1CORE pAsn1Core, uint32_t uTag, uint8_t fClass, PCRTASN1COREVTABLE pOps, uint32_t fFlags)
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85 | {
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86 | pAsn1Core->uTag = uTag;
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87 | pAsn1Core->fClass = fClass;
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88 | pAsn1Core->uRealTag = uTag;
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89 | pAsn1Core->fRealClass = fClass;
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90 | pAsn1Core->cbHdr = 0;
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91 | pAsn1Core->cb = 0;
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92 | pAsn1Core->fFlags = fFlags;
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93 | pAsn1Core->uData.pv = NULL;
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94 | pAsn1Core->pOps = pOps;
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95 | return VINF_SUCCESS;
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96 | }
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97 |
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98 |
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99 | RTDECL(int) RTAsn1Core_InitDefault(PRTASN1CORE pAsn1Core, uint32_t uTag, uint8_t fClass)
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100 | {
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101 | return RTAsn1Core_InitEx(pAsn1Core, uTag, fClass, NULL, RTASN1CORE_F_DEFAULT);
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102 | }
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103 |
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104 |
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105 | static int rtAsn1Core_CloneEx(PRTASN1CORE pThis, PCRTASN1CORE pSrc, PCRTASN1ALLOCATORVTABLE pAllocator, bool fCopyContent)
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106 | {
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107 | Assert(RTASN1CORE_IS_PRESENT(pSrc));
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108 | pThis->uTag = pSrc->uTag;
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109 | pThis->fClass = pSrc->fClass;
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110 | pThis->uRealTag = pSrc->uRealTag;
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111 | pThis->fRealClass = pSrc->fRealClass;
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112 | pThis->cbHdr = pSrc->cbHdr;
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113 | pThis->fFlags = pSrc->fFlags & ~(RTASN1CORE_F_ALLOCATED_CONTENT | RTASN1CORE_F_DECODED_CONTENT);
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114 | pThis->pOps = pSrc->pOps;
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115 | pThis->cb = 0;
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116 | pThis->uData.pv = NULL;
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117 | if (pSrc->cb)
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118 | {
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119 | if (!fCopyContent)
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120 | pThis->cb = pSrc->cb;
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121 | else
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122 | {
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123 | int rc = RTAsn1ContentDup(pThis, pSrc->uData.pv, pSrc->cb, pAllocator);
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124 | if (RT_FAILURE(rc))
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125 | {
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126 | RT_ZERO(*pThis);
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127 | return rc;
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128 | }
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129 | Assert(pThis->cb == pSrc->cb);
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130 | AssertPtr(pThis->uData.pv);
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131 | }
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132 | }
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133 | return VINF_SUCCESS;
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134 | }
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135 |
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136 |
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137 | RTDECL(int) RTAsn1Core_CloneContent(PRTASN1CORE pThis, PCRTASN1CORE pSrc, PCRTASN1ALLOCATORVTABLE pAllocator)
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138 | {
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139 | return rtAsn1Core_CloneEx(pThis, pSrc, pAllocator, true /*fConpyContent*/);
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140 | }
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141 |
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142 |
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143 | RTDECL(int) RTAsn1Core_CloneNoContent(PRTASN1CORE pThis, PCRTASN1CORE pSrc)
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144 | {
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145 | return rtAsn1Core_CloneEx(pThis, pSrc, NULL, false /*fConpyContent*/);
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146 | }
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147 |
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148 |
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149 | RTDECL(int) RTAsn1Core_CompareEx(PCRTASN1CORE pLeft, PCRTASN1CORE pRight, bool fIgnoreTagAndClass)
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150 | {
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151 | int iDiff;
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152 | if (RTASN1CORE_IS_PRESENT(pLeft))
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153 | {
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154 | if (RTASN1CORE_IS_PRESENT(pRight))
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155 | {
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156 | iDiff = memcmp(pLeft->uData.pv, pRight->uData.pv, RT_MIN(pLeft->cb, pRight->cb));
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157 | if (!iDiff)
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158 | {
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159 | if (pLeft->cb != pRight->cb)
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160 | iDiff = pLeft->cb < pRight->cb ? -1 : 1;
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161 | else if (!fIgnoreTagAndClass)
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162 | {
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163 | if (pLeft->uTag != pRight->uTag)
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164 | iDiff = pLeft->uTag < pRight->uTag ? -1 : 1;
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165 | else if (pLeft->fClass != pRight->fClass)
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166 | iDiff = pLeft->fClass < pRight->fClass ? -1 : 1;
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167 | }
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168 | }
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169 | else
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170 | iDiff = iDiff < 0 ? -1 : 1;
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171 | }
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172 | else
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173 | iDiff = -1;
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174 | }
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175 | else
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176 | iDiff = 0 - (int)RTASN1CORE_IS_PRESENT(pRight);
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177 | return iDiff;
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178 | }
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179 |
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180 |
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181 | /**
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182 | * @interface_method_impl{RTASN1COREVTABLE,pfnEncodePrep,
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183 | * This is for not dropping the unparsed content of a 'core' structure when
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184 | * re-encoding it. }
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185 | */
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186 | static DECLCALLBACK(int) rtAsn1Core_EncodePrep(PRTASN1CORE pThisCore, uint32_t fFlags, PRTERRINFO pErrInfo)
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187 | {
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188 | /* We don't update anything here. */
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189 | RT_NOREF(pThisCore, fFlags, pErrInfo);
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190 | return VINF_SUCCESS;
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191 | }
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192 |
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193 |
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194 | /**
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195 | * @interface_method_impl{RTASN1COREVTABLE,pfnEncodeWrite,
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196 | * This is for not dropping the unparsed content of a 'core' structure when
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197 | * re-encoding it. }
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198 | */
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199 | static DECLCALLBACK(int) rtAsn1Core_EncodeWrite(PRTASN1CORE pThisCore, uint32_t fFlags, PFNRTASN1ENCODEWRITER pfnWriter,
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200 | void *pvUser, PRTERRINFO pErrInfo)
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201 | {
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202 | int rc = RTAsn1EncodeWriteHeader(pThisCore, fFlags, pfnWriter, pvUser, pErrInfo);
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203 | if ( RT_SUCCESS(rc)
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204 | && rc != VINF_ASN1_NOT_ENCODED)
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205 | {
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206 | Assert(!RTASN1CORE_IS_DUMMY(pThisCore));
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207 | if (pThisCore->cb)
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208 | {
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209 | AssertPtrReturn(pThisCore->uData.pv,
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210 | RTErrInfoSetF(pErrInfo, VERR_ASN1_INVALID_DATA_POINTER,
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211 | "Invalid uData pointer %p for lone ASN.1 core with %#x bytes of content",
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212 | pThisCore->uData.pv, pThisCore->cb));
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213 | rc = pfnWriter(pThisCore->uData.pv, pThisCore->cb, pvUser, pErrInfo);
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214 | }
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215 | }
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216 | return rc;
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217 | }
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218 |
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219 |
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220 |
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221 | /*
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222 | * ASN.1 Core - Standard Methods.
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223 | *
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224 | * @note Children of the ASN.1 Core doesn't normally call these, they are for
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225 | * when RTASN1CORE is used as a member type.
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226 | */
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227 |
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228 | RT_DECL_DATA_CONST(RTASN1COREVTABLE const) g_RTAsn1Core_Vtable =
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229 | {
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230 | "RTAsn1Core",
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231 | sizeof(RTASN1CORE),
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232 | UINT8_MAX,
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233 | UINT8_MAX,
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234 | 0,
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235 | RTAsn1Core_Delete,
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236 | RTAsn1Core_Enum,
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237 | (PFNRTASN1COREVTCLONE)RTAsn1Core_Clone,
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238 | (PFNRTASN1COREVTCOMPARE)RTAsn1Core_Compare,
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239 | (PFNRTASN1COREVTCHECKSANITY)RTAsn1Core_CheckSanity,
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240 | rtAsn1Core_EncodePrep,
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241 | rtAsn1Core_EncodeWrite
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242 | };
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243 |
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244 |
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245 | RTDECL(int) RTAsn1Core_Init(PRTASN1CORE pThis, PCRTASN1ALLOCATORVTABLE pAllocator)
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246 | {
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247 | RT_NOREF_PV(pAllocator);
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248 | return RTAsn1Core_InitEx(pThis, 0, ASN1_TAGCLASS_CONTEXT | ASN1_TAGFLAG_PRIMITIVE,
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249 | &g_RTAsn1Core_Vtable, RTASN1CORE_F_PRESENT);
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250 | }
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251 |
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252 |
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253 | RTDECL(int) RTAsn1Core_Clone(PRTASN1CORE pThis, PCRTASN1CORE pSrc, PCRTASN1ALLOCATORVTABLE pAllocator)
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254 | {
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255 | int rc;
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256 | RT_ZERO(*pThis);
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257 | if (RTASN1CORE_IS_PRESENT(pSrc))
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258 | {
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259 | Assert(pSrc->pOps == &g_RTAsn1Core_Vtable);
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260 |
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261 | rc = RTAsn1Core_CloneContent(pThis, pSrc, pAllocator);
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262 | }
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263 | else
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264 | rc = VINF_SUCCESS;
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265 | return rc;
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266 | }
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267 |
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268 |
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269 | RTDECL(void) RTAsn1Core_Delete(PRTASN1CORE pThis)
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270 | {
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271 | if (pThis && RTASN1CORE_IS_PRESENT(pThis))
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272 | {
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273 | Assert(pThis->pOps == &g_RTAsn1Core_Vtable);
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274 |
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275 | RTAsn1ContentFree(pThis);
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276 | RT_ZERO(*pThis);
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277 | }
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278 | }
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279 |
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280 |
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281 | RTDECL(int) RTAsn1Core_Enum(PRTASN1CORE pThis, PFNRTASN1ENUMCALLBACK pfnCallback, uint32_t uDepth, void *pvUser)
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282 | {
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283 | /* We have no children to enumerate. */
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284 | Assert(pThis && (!RTASN1CORE_IS_PRESENT(pThis) || pThis->pOps == &g_RTAsn1Core_Vtable));
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285 | NOREF(pThis);
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286 | NOREF(pfnCallback);
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287 | NOREF(uDepth);
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288 | NOREF(pvUser);
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289 | return VINF_SUCCESS;
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290 | }
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291 |
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292 |
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293 | RTDECL(int) RTAsn1Core_Compare(PCRTASN1CORE pLeft, PCRTASN1CORE pRight)
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294 | {
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295 | Assert(pLeft && (!RTASN1CORE_IS_PRESENT(pLeft) || pLeft->pOps == &g_RTAsn1Core_Vtable));
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296 | Assert(pRight && (!RTASN1CORE_IS_PRESENT(pRight) || pRight->pOps == &g_RTAsn1Core_Vtable));
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297 |
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298 | return RTAsn1Core_CompareEx(pLeft, pRight, false /*fIgnoreTagAndClass*/);
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299 | }
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300 |
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301 |
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302 | RTDECL(int) RTAsn1Core_CheckSanity(PCRTASN1CORE pThis, uint32_t fFlags, PRTERRINFO pErrInfo, const char *pszErrorTag)
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303 | {
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304 | RT_NOREF_PV(fFlags);
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305 |
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306 | /* We can only check that it's present. */
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307 | if (!RTAsn1Core_IsPresent(pThis))
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308 | return RTErrInfoSetF(pErrInfo, VERR_ASN1_NOT_PRESENT, "%s: Missing (RTASN1CORE).", pszErrorTag);
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309 | return VINF_SUCCESS;
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310 | }
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311 |
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312 |
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313 | /*
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314 | * Generate code for the associated collection types.
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315 | */
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316 | #define RTASN1TMPL_TEMPLATE_FILE "../common/asn1/asn1-ut-core-template.h"
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317 | #include <iprt/asn1-generator-internal-header.h>
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318 | #include <iprt/asn1-generator-core.h>
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319 | #include <iprt/asn1-generator-init.h>
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320 | #include <iprt/asn1-generator-sanity.h>
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321 |
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