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1 /* |
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2 * Copyright (c) 2004 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 "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 * |
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16 */ |
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17 |
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18 |
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19 // INCLUDE FILES |
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20 #include "CCMSKeyIdentifier.h" |
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21 #include <asn1dec.h> |
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22 #include <asn1enc.h> |
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23 |
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24 // CONSTANTS |
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25 const TInt KMinNumberOfSubModules = 1; |
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26 const TInt KMaxNumberOfSubModules = 3; |
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27 |
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28 // ============================ MEMBER FUNCTIONS =============================== |
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29 |
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30 // ----------------------------------------------------------------------------- |
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31 // CCMSKeyIdentifier::CCMSKeyIdentifier |
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32 // C++ default constructor can NOT contain any code, that |
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33 // might leave. |
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34 // ----------------------------------------------------------------------------- |
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35 // |
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36 EXPORT_C CCMSKeyIdentifier::CCMSKeyIdentifier() |
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37 { |
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38 } |
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39 |
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40 // ----------------------------------------------------------------------------- |
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41 // CCMSKeyIdentifier::ConstructL |
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42 // Symbian 2nd phase constructor can leave. |
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43 // ----------------------------------------------------------------------------- |
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44 // |
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45 EXPORT_C void CCMSKeyIdentifier::ConstructL( |
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46 const TDesC8& aKeyIdentifier ) |
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47 { |
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48 SetKeyIdentifierL( aKeyIdentifier ); |
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49 } |
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50 |
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51 // ----------------------------------------------------------------------------- |
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52 // CCMSKeyIdentifier::ConstructL |
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53 // Symbian 2nd phase constructor can leave. |
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54 // ----------------------------------------------------------------------------- |
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55 // |
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56 EXPORT_C void CCMSKeyIdentifier::ConstructL( |
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57 const TDesC8& aKeyIdentifier, |
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58 const TTime& aDate ) |
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59 { |
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60 SetKeyIdentifierL( aKeyIdentifier ); |
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61 SetDateL( aDate ); |
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62 } |
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63 |
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64 // ----------------------------------------------------------------------------- |
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65 // CCMSKeyIdentifier::NewL |
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66 // Two-phased constructor. |
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67 // ----------------------------------------------------------------------------- |
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68 // |
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69 EXPORT_C CCMSKeyIdentifier* CCMSKeyIdentifier::NewL() |
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70 { |
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71 // creating with empty/default values |
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72 CCMSKeyIdentifier* self = NewL( KNullDesC8() ); |
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73 return self; |
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74 } |
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75 |
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76 // ----------------------------------------------------------------------------- |
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77 // CCMSKeyIdentifier::NewL |
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78 // Two-phased copy constructor. |
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79 // ----------------------------------------------------------------------------- |
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80 // |
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81 EXPORT_C CCMSKeyIdentifier* CCMSKeyIdentifier::NewL( |
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82 const TDesC8& aKeyIdentifier ) |
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83 { |
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84 CCMSKeyIdentifier* self = |
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85 new( ELeave ) CCMSKeyIdentifier(); |
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86 |
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87 CleanupStack::PushL( self ); |
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88 self->ConstructL( aKeyIdentifier ); |
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89 CleanupStack::Pop( self ); |
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90 return self; |
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91 } |
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92 |
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93 // ----------------------------------------------------------------------------- |
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94 // CCMSKeyIdentifier::NewL |
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95 // Two-phased copy constructor. |
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96 // ----------------------------------------------------------------------------- |
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97 // |
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98 EXPORT_C CCMSKeyIdentifier* CCMSKeyIdentifier::NewL( |
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99 const TDesC8& aKeyIdentifier, |
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100 const TTime& aDate ) |
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101 { |
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102 CCMSKeyIdentifier* self = |
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103 new( ELeave ) CCMSKeyIdentifier(); |
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104 |
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105 CleanupStack::PushL( self ); |
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106 self->ConstructL( aKeyIdentifier, aDate ); |
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107 CleanupStack::Pop( self ); |
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108 return self; |
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109 } |
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110 |
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111 // Destructor |
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112 CCMSKeyIdentifier::~CCMSKeyIdentifier() |
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113 { |
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114 delete iKeyIdentifier; |
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115 delete iDate; |
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116 } |
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117 |
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118 // ----------------------------------------------------------------------------- |
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119 // CCMSKeyIdentifier::DecodeL |
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120 // Decrypts raw data to this instance |
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121 // ----------------------------------------------------------------------------- |
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122 void CCMSKeyIdentifier::DecodeL( const TDesC8& aRawData ) |
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123 { |
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124 CArrayPtr< TASN1DecGeneric >* itemsData = |
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125 DecodeSequenceLC( aRawData, KMinNumberOfSubModules, |
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126 KMaxNumberOfSubModules ); |
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127 |
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128 DecodeArrayL( itemsData ); |
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129 |
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130 CleanupStack::PopAndDestroy( itemsData ); |
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131 } |
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132 |
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133 // ----------------------------------------------------------------------------- |
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134 // CCMSKeyIdentifier::EncoderLC |
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135 // Returns ASN1 encoder for this instance |
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136 // ----------------------------------------------------------------------------- |
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137 |
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138 CASN1EncBase* CCMSKeyIdentifier::EncoderLC() const |
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139 { |
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140 CASN1EncSequence* root = CASN1EncSequence::NewLC(); |
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141 |
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142 // encode the subjectKeyIdentifier |
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143 CASN1EncOctetString* subjectKeyIdentifier = |
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144 CASN1EncOctetString::NewLC( *iKeyIdentifier ); |
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145 root->AddAndPopChildL( subjectKeyIdentifier ); |
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146 |
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147 // encode date if existing |
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148 if( iDate ) |
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149 { |
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150 CASN1EncGeneralizedTime* date = |
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151 CASN1EncGeneralizedTime::NewLC( *iDate ); |
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152 root->AddAndPopChildL( date ); |
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153 } |
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154 |
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155 return root; |
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156 } |
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157 |
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158 // ----------------------------------------------------------------------------- |
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159 // CCMSKeyIdentifier::KeyIdentifier |
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160 // Subject Key identifier getter |
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161 // ----------------------------------------------------------------------------- |
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162 EXPORT_C const TDesC8& |
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163 CCMSKeyIdentifier::KeyIdentifier() const |
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164 { |
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165 return *iKeyIdentifier; |
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166 } |
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167 |
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168 // ----------------------------------------------------------------------------- |
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169 // CCMSKeyIdentifier::Date |
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170 // Date getter |
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171 // ----------------------------------------------------------------------------- |
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172 EXPORT_C const TTime* CCMSKeyIdentifier::Date() const |
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173 { |
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174 return iDate; |
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175 } |
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176 |
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177 // ----------------------------------------------------------------------------- |
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178 // CCMSKeyIdentifier::SetKeyIdentifierL |
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179 // KeyIdentifier setter |
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180 // ----------------------------------------------------------------------------- |
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181 EXPORT_C void CCMSKeyIdentifier::SetKeyIdentifierL( |
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182 const TDesC8& aKeyIdentifier ) |
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183 { |
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184 HBufC8* subjectKeyIdentifier = aKeyIdentifier.AllocL(); |
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185 delete iKeyIdentifier; |
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186 iKeyIdentifier = subjectKeyIdentifier; |
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187 } |
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188 |
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189 // ----------------------------------------------------------------------------- |
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190 // CCMSKeyIdentifier::SetDateL |
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191 // Date setter |
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192 // ----------------------------------------------------------------------------- |
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193 EXPORT_C void CCMSKeyIdentifier::SetDateL( |
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194 const TTime& aDate ) |
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195 { |
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196 TTime* date = new( ELeave ) TTime( aDate ); |
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197 delete iDate; |
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198 iDate = date; |
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199 } |
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200 |
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201 // ----------------------------------------------------------------------------- |
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202 // CCMSKeyIdentifier::DecodeImplicitTagL |
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203 // Decrypts raw data with implicit tag |
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204 // ----------------------------------------------------------------------------- |
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205 void CCMSKeyIdentifier::DecodeImplicitTagL( |
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206 const TDesC8& aRawData, |
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207 const TTagType aImplicitTag ) |
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208 { |
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209 CArrayPtr< TASN1DecGeneric >* items = NULL; |
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210 |
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211 // Check the tag |
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212 TASN1DecGeneric decGen( aRawData ); |
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213 decGen.InitL(); |
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214 // Accept only given tag |
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215 if( decGen.Tag() != aImplicitTag ) |
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216 { |
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217 User::Leave( KErrArgument ); |
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218 } |
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219 TASN1DecSequence decSeq; |
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220 items = decSeq.DecodeDERLC( decGen ); |
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221 TInt itemCount = items->Count(); |
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222 if( ( itemCount > KMaxNumberOfSubModules ) || |
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223 ( itemCount < KMinNumberOfSubModules ) ) |
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224 { |
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225 User::Leave( KErrArgument ); |
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226 } |
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227 DecodeArrayL( items ); |
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228 CleanupStack::PopAndDestroy( items ); |
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229 } |
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230 |
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231 // ----------------------------------------------------------------------------- |
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232 // CCMSKeyIdentifier::DecodeArrayL |
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233 // Decodes data from an array of decoders |
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234 // ----------------------------------------------------------------------------- |
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235 void CCMSKeyIdentifier::DecodeArrayL( |
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236 CArrayPtr< TASN1DecGeneric >* aItems ) |
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237 { |
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238 // Caller should have made sure that there is at least one item |
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239 __ASSERT_DEBUG( ( aItems->Count() > 0 ), User::Invariant() ); |
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240 |
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241 // decode subjectKeyIdentifier |
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242 TASN1DecGeneric gen( *aItems->At( 0 ) ); |
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243 gen.InitL(); |
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244 TASN1DecOctetString octetStringDecoder; |
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245 HBufC8* tmp = |
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246 octetStringDecoder.DecodeDERL( gen ); |
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247 delete iKeyIdentifier; |
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248 iKeyIdentifier = tmp; |
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249 |
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250 // decode date if exists |
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251 if( aItems->Count() > 1 ) |
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252 { |
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253 TInt pos = 0; |
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254 TASN1DecGeneralizedTime dateDec; |
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255 TTime date = dateDec.DecodeDERL( aItems->At( 1 )->Encoding(), pos ); |
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256 SetDateL( date ); |
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257 } |
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258 else |
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259 { |
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260 delete iDate; |
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261 iDate = NULL; |
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262 } |
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263 |
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264 // possible OtherKeyAttribute is not supported / ignored. |
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265 } |
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266 |
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267 // End of File |