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1 /* |
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2 * Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * ASN1 decoder |
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16 * |
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17 */ |
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18 |
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19 |
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20 |
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21 |
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22 /** |
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23 @file |
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24 @publishedAll |
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25 @released |
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26 */ |
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27 |
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28 #ifndef __ASN1DEC_H__ |
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29 #define __ASN1DEC_H__ |
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30 |
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31 #include <e32std.h> |
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32 #include <e32base.h> |
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33 #include <asn1cons.h> |
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34 |
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35 class RInteger; |
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36 |
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37 |
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38 /** |
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39 * @publishedAll |
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40 * @released |
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41 */ |
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42 class TASN1DecGeneric |
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43 { |
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44 public: |
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45 IMPORT_C explicit TASN1DecGeneric(const TDesC8& aSource); |
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46 IMPORT_C void InitL(); |
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47 IMPORT_C TPtrC8 Encoding() const; |
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48 IMPORT_C TInt LengthDER() const; |
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49 IMPORT_C TPtrC8 GetContentDER(void) const; |
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50 IMPORT_C TInt LengthDERContent(void) const; |
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51 IMPORT_C TInt LengthDERHeader() const; |
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52 IMPORT_C TTagType Tag() const; |
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53 IMPORT_C TASN1Class Class() const; |
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54 private: |
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55 TPtrC8 iEncoding; |
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56 TInt iStartOfContents; |
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57 TInt iLength; |
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58 TTagType iExplicitTag; |
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59 TASN1Class iClass; |
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60 }; |
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61 |
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62 /** |
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63 * @publishedAll |
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64 * @released |
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65 */ |
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66 class TASN1DecString |
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67 { |
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68 public: |
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69 protected: |
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70 IMPORT_C TASN1DecString(const TTagType aTag); |
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71 virtual TInt CheckValid(const TDesC8& aSource)=0; |
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72 }; |
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73 |
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74 /** |
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75 * @publishedAll |
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76 * @released |
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77 */ |
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78 class TASN1DecBoolean |
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79 { |
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80 public: |
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81 IMPORT_C TASN1DecBoolean(); |
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82 IMPORT_C TBool DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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83 IMPORT_C TBool DecodeDERL(const TASN1DecGeneric& Source); |
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84 private: |
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85 }; |
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86 |
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87 /** |
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88 * @publishedAll |
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89 * @released |
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90 */ |
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91 class TASN1DecNull |
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92 { |
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93 public: |
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94 IMPORT_C TASN1DecNull(); |
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95 IMPORT_C void DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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96 IMPORT_C void DecodeDERL(const TASN1DecGeneric& aSource); |
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97 }; |
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98 |
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99 /** |
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100 * @publishedAll |
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101 * @released |
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102 */ |
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103 class TASN1DecEnumerated |
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104 { |
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105 public: |
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106 IMPORT_C TASN1DecEnumerated(void); |
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107 }; |
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108 |
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109 /** |
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110 * @publishedAll |
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111 * @released |
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112 */ |
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113 class TASN1DecInteger |
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114 { |
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115 public: |
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116 IMPORT_C TASN1DecInteger(); |
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117 IMPORT_C TInt DecodeDERShortL(const TDesC8& aSource,TInt& aPos); |
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118 IMPORT_C TInt DecodeDERShortL(const TASN1DecGeneric& aSource); |
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119 IMPORT_C RInteger DecodeDERLongL(const TDesC8& aSource,TInt& aPos); |
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120 IMPORT_C RInteger DecodeDERLongL(const TASN1DecGeneric& aSource); |
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121 }; |
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122 |
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123 const TInt KNumberOfIDs=15; |
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124 |
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125 /** |
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126 * @publishedAll |
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127 * @released |
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128 */ |
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129 class TASN1DecObjectIdentifier |
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130 { |
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131 public: |
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132 IMPORT_C TASN1DecObjectIdentifier(); |
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133 IMPORT_C HBufC* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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134 IMPORT_C HBufC* DecodeDERL(const TASN1DecGeneric& aSource); |
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135 private: |
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136 TInt DecodeContentsL(TFixedArray<TInt, KNumberOfIDs>& aOID, const TDesC8& aSource); |
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137 }; |
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138 |
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139 /** |
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140 * @publishedAll |
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141 * @released |
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142 */ |
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143 class TASN1DecSet |
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144 { |
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145 public: |
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146 IMPORT_C TASN1DecSet(); |
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147 IMPORT_C CArrayPtrFlat<TASN1DecGeneric>* NewDERLC(const TDesC8& aSource); |
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148 IMPORT_C CArrayPtrFlat<TASN1DecGeneric>* DecodeDERLC(const TDesC8& aSource,TInt& aPos); |
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149 IMPORT_C CArrayPtrFlat<TASN1DecGeneric>* DecodeDERLC(const TASN1DecGeneric& aSource); |
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150 IMPORT_C CArrayPtrFlat<TASN1DecGeneric>* DecodeDERLC(const TDesC8& aSource,TInt& aPos, TInt aMin, TInt aMax); |
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151 IMPORT_C CArrayPtrFlat<TASN1DecGeneric>* DecodeDERLC(const TASN1DecGeneric& aSource, TInt aMin, TInt aMax); |
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152 protected: |
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153 /** @internalComponent */ |
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154 void DecodeContentsL(const TDesC8& aSource, TInt& aPos, CArrayPtrFlat<TASN1DecGeneric>& aDest); |
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155 /** @internalComponent */ |
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156 static void CleanupSet(TAny* aArray); |
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157 }; |
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158 |
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159 /** |
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160 * @publishedAll |
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161 * @released |
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162 */ |
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163 class TASN1DecGraphicString |
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164 { |
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165 public: |
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166 IMPORT_C TASN1DecGraphicString(); |
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167 IMPORT_C HBufC* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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168 protected: |
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169 IMPORT_C TInt CheckValid(const TDesC8& aSource); |
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170 private: |
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171 HBufC* DecodeContentsL(const TDesC8& aSource); |
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172 }; |
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173 |
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174 /** |
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175 * @publishedAll |
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176 * @released |
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177 */ |
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178 class TASN1DecVisibleString |
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179 { |
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180 public: |
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181 IMPORT_C TASN1DecVisibleString(void); |
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182 IMPORT_C HBufC* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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183 protected: |
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184 IMPORT_C TInt CheckValid(const TDesC8& aSource); |
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185 private: |
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186 HBufC* DecodeContentsL(const TDesC8& aSource); |
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187 }; |
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188 |
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189 /** |
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190 * @publishedAll |
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191 * @released |
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192 */ |
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193 class TASN1DecGeneralizedTime |
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194 { |
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195 public: |
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196 IMPORT_C TASN1DecGeneralizedTime(); |
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197 IMPORT_C TTime DecodeDERL(const TDesC8& aSource, TInt& aPos); |
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198 IMPORT_C TTime DecodeDERL(const TASN1DecGeneric& aGen); |
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199 private: |
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200 TTime GetTimeL(const TDesC8& aSource); |
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201 }; |
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202 |
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203 /** |
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204 * @publishedAll |
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205 * @released |
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206 */ |
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207 class TASN1DecUTCTime |
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208 { |
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209 public: |
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210 IMPORT_C TASN1DecUTCTime(); |
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211 IMPORT_C TTime DecodeDERL(const TASN1DecGeneric& aGen); |
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212 IMPORT_C TTime DecodeDERL(const TDesC8& aSource, TInt& aPos); |
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213 private: |
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214 TTime GetTimeL(const TDesC8& aSource); |
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215 }; |
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216 |
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217 /** |
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218 * @publishedAll |
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219 * @released |
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220 */ |
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221 class TASN1DecBitString |
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222 { |
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223 public: |
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224 IMPORT_C TASN1DecBitString(); |
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225 IMPORT_C HBufC8* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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226 IMPORT_C HBufC8* DecodeDERL(const TASN1DecGeneric& aSource); |
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227 //we need the next 2 functions because many standards encode things as bit |
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228 //strings |
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229 IMPORT_C HBufC8* ExtractOctetStringL(const TDesC8& aSource,TInt& aPos); |
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230 IMPORT_C HBufC8* ExtractOctetStringL(const TASN1DecGeneric& aSource); |
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231 }; |
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232 |
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233 /** |
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234 * @publishedAll |
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235 * @released |
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236 */ |
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237 class TASN1DecIA5String |
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238 { |
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239 public: |
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240 IMPORT_C TASN1DecIA5String(); |
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241 IMPORT_C HBufC* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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242 IMPORT_C HBufC* DecodeDERL(const TASN1DecGeneric& aSource); |
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243 protected: |
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244 IMPORT_C TInt CheckValid(const TDesC8& aSource); |
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245 private: |
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246 HBufC* DecodeContentsL(const TDesC8& aSource); |
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247 }; |
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248 |
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249 /** |
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250 * @internalComponent |
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251 * @released |
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252 */ |
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253 class TASN1DecGenericString |
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254 { |
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255 public: |
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256 TASN1DecGenericString(); |
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257 TInt GetContentDER(TDes8& aContent); |
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258 TInt Length(void); |
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259 private: |
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260 }; |
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261 |
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262 /** |
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263 * @publishedAll |
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264 * @released |
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265 */ |
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266 class TASN1DecUTF8String |
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267 { |
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268 public: |
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269 IMPORT_C TASN1DecUTF8String(); |
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270 IMPORT_C HBufC* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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271 IMPORT_C HBufC* DecodeDERL(const TASN1DecGeneric& aSource); |
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272 protected: |
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273 IMPORT_C TInt CheckValid(const TDesC8& aSource); |
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274 private: |
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275 HBufC* DecodeContentsL(const TDesC8& aSource); |
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276 }; |
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277 |
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278 /** |
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279 * @publishedAll |
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280 * @released |
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281 */ |
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282 class TASN1DecGeneralString |
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283 { |
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284 public: |
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285 IMPORT_C TASN1DecGeneralString(); |
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286 IMPORT_C HBufC* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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287 protected: |
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288 IMPORT_C TInt CheckValid(const TDesC8& aSource); |
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289 private: |
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290 HBufC* DecodeContentsL(const TDesC8& aSource); |
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291 }; |
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292 |
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293 /** |
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294 * @publishedAll |
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295 * @released |
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296 */ |
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297 class TASN1DecOctetString |
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298 { |
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299 public: |
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300 IMPORT_C TASN1DecOctetString(); |
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301 IMPORT_C HBufC8* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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302 IMPORT_C HBufC8* DecodeDERL(const TASN1DecGeneric& aSource); |
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303 protected: |
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304 IMPORT_C TInt CheckValid(const TDesC8& aSource); |
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305 }; |
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306 |
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307 /** |
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308 * @publishedAll |
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309 * @released |
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310 */ |
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311 class TASN1DecNumericString |
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312 { |
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313 public: |
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314 IMPORT_C TASN1DecNumericString(); |
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315 IMPORT_C HBufC* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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316 protected: |
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317 /** @internalComponent */ |
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318 TInt CheckValid(const TDesC8& aSource); |
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319 private: |
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320 HBufC* DecodeContentsL(const TDesC8& aSource); |
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321 }; |
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322 |
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323 /** |
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324 * @publishedAll |
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325 * @released |
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326 */ |
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327 class TASN1DecVideotexString |
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328 { |
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329 public: |
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330 IMPORT_C TASN1DecVideotexString(); |
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331 IMPORT_C HBufC* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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332 protected: |
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333 IMPORT_C TInt CheckValid(const TDesC8& aSource); |
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334 private: |
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335 HBufC* DecodeContentsL(const TDesC8& aSource); |
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336 }; |
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337 |
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338 /** |
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339 * @publishedAll |
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340 * @released |
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341 */ |
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342 class TASN1DecPrintableString |
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343 { |
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344 public: |
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345 IMPORT_C TASN1DecPrintableString(); |
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346 IMPORT_C HBufC* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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347 IMPORT_C HBufC* DecodeDERL(const TASN1DecGeneric& aSource); |
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348 protected: |
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349 /** @internalComponent */ |
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350 TInt CheckValid(const TDesC8& aSource); |
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351 private: |
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352 HBufC* DecodeContentsL(const TDesC8& aSource); |
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353 }; |
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354 |
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355 /** |
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356 * Class used for decoding Teletex strings. |
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357 * The TeletexString type is not fully supported by this library. |
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358 * Instead the decode methods perform a direct conversion from 8 to 16bits by adding |
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359 * null characters in the second byte of each character. This will work as expected |
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360 * for cases where the string contains ASCII data. |
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361 * As this is non-destructive, the original data can be retrieved by performing |
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362 * a Copy to an 8-bit descriptor. |
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363 * @publishedAll |
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364 * @released |
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365 */ |
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366 class TASN1DecTeletexString |
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367 { |
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368 public: |
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369 IMPORT_C TASN1DecTeletexString(); |
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370 IMPORT_C HBufC* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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371 IMPORT_C HBufC* DecodeDERL(const TASN1DecGeneric& Source); |
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372 protected: |
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373 IMPORT_C TInt CheckValid(const TDesC8& aSource); |
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374 private: |
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375 HBufC* DecodeContentsL(const TDesC8& aSource); |
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376 }; |
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377 |
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378 /** |
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379 Class used for decoding ASN.1 BMP strings. |
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380 @publishedAll |
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381 @released |
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382 */ |
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383 class TASN1DecBMPString |
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384 { |
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385 public: |
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386 IMPORT_C TASN1DecBMPString(); |
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387 IMPORT_C HBufC* DecodeDERL(const TDesC8& aSource,TInt& aPos); |
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388 IMPORT_C HBufC* DecodeDERL(const TASN1DecGeneric& aSource); |
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389 protected: |
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390 IMPORT_C TInt CheckValid(const TDesC8& aSource); |
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391 private: |
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392 HBufC* DecodeContentsL(const TDesC8& aSource); |
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393 }; |
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394 |
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395 /** |
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396 * @publishedAll |
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397 * @released |
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398 */ |
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399 class TASN1DecSequence |
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400 { |
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401 public: |
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402 IMPORT_C TASN1DecSequence(); |
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403 IMPORT_C CArrayPtrFlat<TASN1DecGeneric>* DecodeDERLC(const TDesC8& aSource,TInt& aPos); |
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404 IMPORT_C CArrayPtrFlat<TASN1DecGeneric>* DecodeDERLC(const TASN1DecGeneric& aSource); |
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405 IMPORT_C CArrayPtrFlat<TASN1DecGeneric>* DecodeDERLC(const TDesC8& aSource,TInt& aPos, TInt aMin, TInt aMax); |
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406 IMPORT_C CArrayPtrFlat<TASN1DecGeneric>* DecodeDERLC(const TASN1DecGeneric& aSource, TInt aMin, TInt aMax); |
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407 protected: |
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408 /** @internalComponent */ |
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409 void DecodeContentsL(const TDesC8& aSource, CArrayPtrFlat<TASN1DecGeneric>& aDest); |
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410 /** @internalComponent */ |
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411 static void CleanupSequence(TAny* aArray); |
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412 }; |
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413 |
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414 #endif |