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1 /* |
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2 * Copyright (c) 2002 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 "CCMSAttribute.h" |
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21 #include "TCMSTimeUtil.h" |
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22 #include <x500dn.h> |
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23 #include <asn1dec.h> |
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24 #include <asn1enc.h> |
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25 |
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26 // CONSTANTS |
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27 const TInt KMaxNumberOfSubModules = 3; |
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28 const TInt KMinNumberOfSubModules = 2; |
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29 const TInt KDefaultGranularity = 1; |
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30 |
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31 // CMS SignedAttributes useful types |
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32 _LIT( KContentTypeOID, "1.2.840.113549.1.9.3" ); |
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33 _LIT( KMessageDigestOID, "1.2.840.113549.1.9.4" ); |
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34 _LIT( KSignTimeOID, "1.2.840.113549.1.9.5" ); |
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35 |
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36 // ============================= LOCAL FUNCTIONS =============================== |
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37 |
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38 // ----------------------------------------------------------------------------- |
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39 // CMSCreateEncoderLC Creates an encoder based on the gived OID value. |
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40 // Returns: Encoder for the given encoding |
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41 // ----------------------------------------------------------------------------- |
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42 // |
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43 CASN1EncBase* CMSCreateEncoderLC( const TDesC& aAttributeType, const TDesC8& aEncoding ) |
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44 { |
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45 CASN1EncBase* retVal = NULL; |
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46 if( aAttributeType == KContentTypeOID ) |
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47 { |
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48 // encoding data, have to decode it before encoding it again |
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49 // because CASN1EncEncoding changes TagType to Constructed |
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50 TASN1DecObjectIdentifier dataDec; |
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51 TInt pos = 0; |
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52 HBufC* data = dataDec.DecodeDERL( aEncoding, pos ); |
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53 CleanupStack::PushL( data ); |
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54 retVal = CASN1EncObjectIdentifier::NewL( *data ); |
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55 CleanupStack::PopAndDestroy( data ); |
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56 CleanupStack::PushL( retVal ); |
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57 } |
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58 else if( aAttributeType == KMessageDigestOID ) |
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59 { |
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60 TASN1DecOctetString dataDec; |
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61 TInt pos = 0; |
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62 HBufC8* data = dataDec.DecodeDERL( aEncoding, pos ); |
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63 CleanupStack::PushL( data ); |
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64 retVal = CASN1EncOctetString::NewL( *data ); |
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65 CleanupStack::PopAndDestroy( data ); |
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66 CleanupStack::PushL( retVal ); |
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67 } |
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68 else if( aAttributeType == KSignTimeOID ) |
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69 { |
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70 TTime time = TCMSTimeUtil::ConvertToTimeL( aEncoding ); |
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71 retVal = TCMSTimeUtil::ConvertToEncoderLC( time ); |
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72 } |
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73 else |
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74 { |
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75 // default is to wrap inside encencoder |
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76 retVal = CASN1EncEncoding::NewLC( aEncoding ); |
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77 } |
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78 return retVal; |
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79 } |
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80 |
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81 // ============================ MEMBER FUNCTIONS =============================== |
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82 |
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83 // ----------------------------------------------------------------------------- |
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84 // CCMSAttribute::CCMSAttribute |
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85 // C++ default constructor can NOT contain any code, that |
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86 // might leave. |
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87 // ----------------------------------------------------------------------------- |
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88 // |
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89 EXPORT_C CCMSAttribute::CCMSAttribute() |
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90 { |
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91 } |
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92 |
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93 // ----------------------------------------------------------------------------- |
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94 // CCMSAttribute::ConstructL |
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95 // Symbian 2nd phase constructor can leave. |
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96 // ----------------------------------------------------------------------------- |
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97 // |
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98 EXPORT_C void CCMSAttribute::ConstructL() |
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99 { |
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100 // creating with empty values |
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101 iAttributeType = KNullDesC().AllocL(); |
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102 |
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103 iAttributeValues = |
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104 new(ELeave) CDesC8ArrayFlat( KDefaultGranularity ); |
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105 } |
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106 |
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107 // ----------------------------------------------------------------------------- |
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108 // CCMSAttribute::ConstructL |
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109 // Symbian 2nd phase constructor can leave. |
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110 // ----------------------------------------------------------------------------- |
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111 // |
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112 EXPORT_C void CCMSAttribute::ConstructL( |
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113 const TDesC& aAttributeType, |
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114 const CDesC8Array& aAttributeValues ) |
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115 { |
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116 SetAttributeTypeL( aAttributeType ); |
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117 SetAttributeValuesL( aAttributeValues ); |
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118 } |
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119 |
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120 // ----------------------------------------------------------------------------- |
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121 // CCMSAttribute::ConstructL |
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122 // Symbian 2nd phase constructor can leave. |
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123 // ----------------------------------------------------------------------------- |
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124 // |
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125 EXPORT_C void CCMSAttribute::ConstructL( |
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126 const TDesC& aAttributeType, |
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127 const TDesC8& aAttributeValue ) |
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128 { |
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129 SetAttributeTypeL( aAttributeType ); |
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130 iAttributeValues = |
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131 new(ELeave) CDesC8ArrayFlat( KDefaultGranularity ); |
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132 iAttributeValues->AppendL( aAttributeValue ); |
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133 } |
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134 |
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135 // ----------------------------------------------------------------------------- |
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136 // CCMSAttribute::NewLC |
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137 // Two-phased constructor. |
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138 // ----------------------------------------------------------------------------- |
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139 // |
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140 EXPORT_C CCMSAttribute* CCMSAttribute::NewLC() |
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141 { |
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142 CCMSAttribute* self = new( ELeave ) CCMSAttribute(); |
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143 CleanupStack::PushL( self ); |
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144 self->ConstructL(); |
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145 return self; |
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146 } |
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147 |
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148 // ----------------------------------------------------------------------------- |
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149 // CCMSAttribute::NewL |
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150 // Two-phased constructor. |
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151 // ----------------------------------------------------------------------------- |
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152 // |
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153 EXPORT_C CCMSAttribute* CCMSAttribute::NewL() |
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154 { |
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155 CCMSAttribute* self = NewLC(); |
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156 CleanupStack::Pop( self ); |
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157 return self; |
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158 } |
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159 |
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160 // ----------------------------------------------------------------------------- |
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161 // CCMSAttribute::NewL |
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162 // Two-phased constructor. |
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163 // ----------------------------------------------------------------------------- |
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164 // |
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165 EXPORT_C CCMSAttribute* CCMSAttribute::NewL( |
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166 const TDesC& aAttributeType, |
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167 const CDesC8Array& aAttributeValues ) |
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168 { |
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169 CCMSAttribute* self = NewLC( aAttributeType, aAttributeValues ); |
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170 CleanupStack::Pop( self ); |
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171 return self; |
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172 } |
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173 |
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174 // ----------------------------------------------------------------------------- |
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175 // CCMSAttribute::NewLC |
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176 // Two-phased constructor. |
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177 // ----------------------------------------------------------------------------- |
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178 // |
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179 EXPORT_C CCMSAttribute* CCMSAttribute::NewLC( |
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180 const TDesC& aAttributeType, |
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181 const CDesC8Array& aAttributeValues ) |
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182 { |
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183 CCMSAttribute* self = new( ELeave ) CCMSAttribute(); |
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184 CleanupStack::PushL( self ); |
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185 self->ConstructL( aAttributeType, aAttributeValues ); |
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186 return self; |
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187 } |
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188 |
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189 // ----------------------------------------------------------------------------- |
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190 // CCMSAttribute::NewLC |
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191 // Two-phased constructor. |
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192 // ----------------------------------------------------------------------------- |
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193 // |
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194 EXPORT_C CCMSAttribute* CCMSAttribute::NewLC( |
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195 const TDesC& aAttributeType, |
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196 const TDesC8& aAttributeValue ) |
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197 { |
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198 CCMSAttribute* self = new( ELeave ) CCMSAttribute(); |
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199 CleanupStack::PushL( self ); |
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200 self->ConstructL( aAttributeType, aAttributeValue ); |
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201 return self; |
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202 } |
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203 |
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204 // ----------------------------------------------------------------------------- |
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205 // CCMSAttribute::NewL |
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206 // Two-phased constructor. |
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207 // ----------------------------------------------------------------------------- |
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208 // |
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209 EXPORT_C CCMSAttribute* CCMSAttribute::NewL( |
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210 const TDesC& aAttributeType, |
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211 const TDesC8& aAttributeValue ) |
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212 { |
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213 CCMSAttribute* self = NewLC( aAttributeType, aAttributeValue ); |
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214 CleanupStack::Pop( self ); |
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215 return self; |
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216 } |
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217 |
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218 // Destructor |
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219 CCMSAttribute::~CCMSAttribute() |
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220 { |
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221 delete iAttributeType; |
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222 delete iAttributeValues; |
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223 } |
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224 |
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225 // ----------------------------------------------------------------------------- |
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226 // CCMSAttribute::DecodeL |
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227 // Decrypts raw data to this instance |
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228 // ----------------------------------------------------------------------------- |
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229 void CCMSAttribute::DecodeL( const TDesC8& aRawData ) |
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230 { |
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231 CArrayPtr<TASN1DecGeneric>* itemsData = |
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232 DecodeSequenceLC( aRawData, |
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233 KMinNumberOfSubModules, |
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234 KMaxNumberOfSubModules ); |
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235 // we would not get this far if there is not 2 or 3 elements |
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236 // decoding attribute type |
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237 TASN1DecObjectIdentifier decOid; |
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238 HBufC* oid = decOid.DecodeDERL( *itemsData->At( 0 ) ); |
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239 delete iAttributeType; |
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240 iAttributeType = oid; |
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241 |
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242 // deocoding attribute values |
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243 TASN1DecSet decSet; |
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244 CArrayPtrFlat<TASN1DecGeneric>* attValues = |
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245 decSet.DecodeDERLC( *itemsData->At( 1 ) ); |
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246 TInt numOfAttValues = attValues->Count(); |
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247 CDesC8ArrayFlat* tmpArray = new( ELeave ) CDesC8ArrayFlat( numOfAttValues ); |
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248 CleanupStack::PushL( tmpArray ); |
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249 for( TInt i = 0; i < numOfAttValues; i++ ) |
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250 { |
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251 tmpArray->AppendL( attValues->At( i )->Encoding() ); |
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252 } |
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253 delete iAttributeValues; |
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254 iAttributeValues = tmpArray; |
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255 // compress to get rid of possible unneccessary slots |
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256 iAttributeValues->Compress(); |
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257 |
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258 // possible context values are ignored |
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259 |
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260 CleanupStack::Pop( tmpArray ); |
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261 CleanupStack::PopAndDestroy( attValues ); |
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262 CleanupStack::PopAndDestroy( itemsData ); |
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263 } |
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264 |
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265 // ----------------------------------------------------------------------------- |
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266 // CCMSAttribute::EncoderLC |
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267 // Returns ASN1 encoder for this instance |
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268 // ----------------------------------------------------------------------------- |
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269 |
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270 CASN1EncBase* CCMSAttribute::EncoderLC() const |
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271 { |
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272 CASN1EncSequence* root = CASN1EncSequence::NewLC(); |
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273 |
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274 // add attribute type |
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275 CASN1EncObjectIdentifier* oid = CASN1EncObjectIdentifier::NewLC( *iAttributeType ); |
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276 root->AddAndPopChildL( oid ); |
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277 |
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278 // add attribute values |
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279 CASN1EncSequence* values = CASN1EncSequence::NewLC(); |
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280 |
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281 // change tag to SET |
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282 values->SetTag( EASN1Set, EUniversal ); |
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283 |
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284 TInt numOfValues = iAttributeValues->Count(); |
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285 for( TInt i = 0; i < numOfValues; i++ ) |
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286 { |
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287 CASN1EncBase* enc = CMSCreateEncoderLC( *iAttributeType, ( *iAttributeValues )[ i ] ); |
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288 values->AddAndPopChildL( enc ); |
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289 } |
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290 |
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291 root->AddAndPopChildL( values ); |
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292 return root; |
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293 } |
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294 |
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295 // ----------------------------------------------------------------------------- |
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296 // CCMSAttribute::AttributeType |
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297 // Getter for attribute type |
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298 // ----------------------------------------------------------------------------- |
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299 EXPORT_C const TDesC& CCMSAttribute::AttributeType() const |
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300 { |
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301 return *iAttributeType; |
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302 } |
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303 |
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304 // ----------------------------------------------------------------------------- |
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305 // CCMSAttribute::AttributeValues |
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306 // Getter for attribute values |
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307 // ----------------------------------------------------------------------------- |
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308 EXPORT_C const CDesC8Array& CCMSAttribute::AttributeValues() const |
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309 { |
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310 return *iAttributeValues; |
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311 } |
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312 |
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313 // ----------------------------------------------------------------------------- |
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314 // CCMSAttribute::SetAttributeTypeL |
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315 // Setter for attribute type, takes copy |
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316 // ----------------------------------------------------------------------------- |
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317 EXPORT_C void CCMSAttribute::SetAttributeTypeL( const TDesC& aAttributeType ) |
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318 { |
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319 HBufC* tmp = aAttributeType.AllocL(); |
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320 delete iAttributeType; |
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321 iAttributeType = tmp; |
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322 } |
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323 |
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324 // ----------------------------------------------------------------------------- |
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325 // CCMSAttribute::SetAttributeTypeL |
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326 // Setter for attribute values, takes copy |
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327 // ----------------------------------------------------------------------------- |
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328 EXPORT_C void CCMSAttribute::SetAttributeValuesL( |
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329 const CDesC8Array& aAttributeValues ) |
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330 { |
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331 TInt numOfValues = aAttributeValues.Count(); |
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332 // Making 1 extra slot |
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333 CDesC8ArrayFlat* tmp = new(ELeave) CDesC8ArrayFlat( numOfValues + 1 ); |
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334 CleanupStack::PushL( tmp ); |
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335 for( TInt i = 0; i < numOfValues; i++ ) |
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336 { |
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337 tmp->AppendL( aAttributeValues[ i ] ); |
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338 } |
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339 |
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340 // Compressing |
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341 tmp->Compress(); |
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342 CleanupStack::Pop( tmp ); |
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343 delete iAttributeValues; |
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344 iAttributeValues = tmp; |
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345 } |
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346 |
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347 // End of File |