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1 /* |
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2 * Copyright (c) 2006-2009 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 * |
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16 */ |
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17 |
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18 |
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19 #include <cmscontentinfo.h> |
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20 #include <asn1dec.h> |
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21 #include <asn1enc.h> |
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22 #include "pkcs7asn1.h" |
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23 #include "cmsutils.h" |
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24 |
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25 // |
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26 //Implementation of CMS ContentInfo Identity |
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27 // |
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28 |
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29 EXPORT_C CCmsContentInfo* CCmsContentInfo::NewLC(const TDesC8& aRawData) |
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30 { |
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31 CCmsContentInfo* self = new (ELeave) CCmsContentInfo(); |
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32 CleanupStack::PushL(self); |
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33 self->ConstructL(aRawData); |
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34 return self; |
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35 } |
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36 |
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37 EXPORT_C CCmsContentInfo* CCmsContentInfo::NewL(const TDesC8& aRawData) |
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38 { |
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39 CCmsContentInfo* self = NewLC(aRawData); |
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40 CleanupStack::Pop(self); |
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41 return self; |
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42 } |
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43 |
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44 EXPORT_C CCmsContentInfo* CCmsContentInfo::NewL(TCmsContentInfoType aContentInfoType, const TDesC8& aContentData) |
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45 { |
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46 CCmsContentInfo* self = NewLC(aContentInfoType, aContentData); |
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47 CleanupStack::Pop(self); |
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48 return self; |
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49 } |
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50 |
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51 EXPORT_C CCmsContentInfo* CCmsContentInfo::NewLC(TCmsContentInfoType aContentInfoType, const TDesC8& aContentData) |
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52 { |
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53 CCmsContentInfo* self = new (ELeave) CCmsContentInfo(aContentInfoType, aContentData); |
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54 CleanupStack::PushL(self); |
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55 return self; |
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56 } |
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57 |
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58 EXPORT_C CCmsContentInfo::~CCmsContentInfo() |
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59 { |
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60 |
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61 } |
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62 CCmsContentInfo::CCmsContentInfo() |
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63 { |
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64 } |
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65 |
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66 CCmsContentInfo::CCmsContentInfo(TCmsContentInfoType aContentInfoType, const TDesC8& aContentData) |
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67 :iContentType(aContentInfoType) |
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68 { |
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69 iContentData.Set(aContentData); |
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70 } |
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71 |
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72 void CCmsContentInfo::ConstructL(const TDesC8& aRawData) |
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73 { |
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74 const TInt minItems = 2; // Must have OID |
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75 const TInt maxItems = 2; // Must have data |
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76 CArrayPtr<TASN1DecGeneric>* contentInfo = PKCS7ASN1::DecodeSequenceLC(aRawData, minItems, maxItems); |
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77 |
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78 //Decode Content Type |
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79 iContentType=(TCmsContentInfoType)(CmsUtils::DecodeContentTypeL(contentInfo->At(0))); |
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80 |
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81 //Decode Content Data |
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82 const TASN1DecGeneric* contentInfoAt1 = contentInfo->At(1); |
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83 if ( contentInfoAt1->Tag() == 0 || contentInfoAt1->Class() == EContextSpecific ) |
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84 { |
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85 TASN1DecGeneric decGen(contentInfoAt1->GetContentDER()); |
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86 decGen.InitL(); |
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87 if (iContentType==EContentTypeData) |
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88 { |
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89 if (decGen.Tag()!=EASN1OctetString || decGen.Class()!=EUniversal) |
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90 { |
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91 User::Leave(KErrArgument); |
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92 } |
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93 else |
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94 { |
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95 iContentData.Set(decGen.GetContentDER()); |
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96 } |
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97 } |
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98 else |
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99 { |
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100 iContentData.Set(decGen.Encoding()); |
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101 } |
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102 } |
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103 else |
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104 { |
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105 User::Leave(KErrArgument); |
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106 } |
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107 |
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108 CleanupStack::PopAndDestroy(contentInfo); |
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109 } |
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110 |
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111 EXPORT_C CASN1EncSequence* CCmsContentInfo::EncodeASN1DERLC() const |
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112 { |
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113 // the root sequence contains the OID and the content data |
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114 CASN1EncSequence* root = CASN1EncSequence::NewLC(); |
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115 |
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116 //Encode the OID |
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117 CASN1EncObjectIdentifier* oid = CmsUtils::EncodeContentTypeLC(iContentType); |
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118 root->AddAndPopChildL(oid); |
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119 |
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120 CASN1EncBase* enc(NULL); |
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121 if (iContentType==EContentTypeData) |
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122 { |
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123 enc=CASN1EncOctetString::NewL(iContentData); |
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124 } |
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125 else |
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126 { |
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127 //Encode the Content |
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128 //iContentData already encoded in sequence |
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129 //so just rebuild the structure |
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130 enc = CASN1EncEncoding::NewL(iContentData); |
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131 } |
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132 // Add [0] EXPLICT |
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133 CASN1EncExplicitTag* Enc=CASN1EncExplicitTag::NewLC(enc, 0); |
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134 root->AddAndPopChildL(Enc); |
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135 |
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136 return root; |
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137 } |
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138 |
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139 EXPORT_C const TPtrC8 CCmsContentInfo::ContentData() const |
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140 { |
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141 return iContentData; |
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142 } |
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143 |
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144 EXPORT_C TCmsContentInfoType CCmsContentInfo::ContentType() const |
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145 { |
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146 return iContentType; |
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147 } |
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148 |
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149 |
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150 // |
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151 //Implementation of CMS EncapsulatedContentInfo Identity |
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152 // |
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153 CEncapsulatedContentInfo* CEncapsulatedContentInfo::NewLC(const TDesC8& aRawData) |
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154 { |
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155 CEncapsulatedContentInfo* self = new (ELeave) CEncapsulatedContentInfo(); |
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156 CleanupStack::PushL(self); |
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157 self->ConstructL(aRawData); |
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158 return self; |
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159 } |
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160 |
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161 CEncapsulatedContentInfo* CEncapsulatedContentInfo::NewL(const TDesC8& aRawData) |
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162 { |
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163 CEncapsulatedContentInfo* self = NewLC(aRawData); |
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164 CleanupStack::Pop(self); |
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165 return self; |
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166 } |
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167 |
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168 CEncapsulatedContentInfo* CEncapsulatedContentInfo::NewLC(TCmsContentInfoType aContentInfoType, TBool aIsEContentDataPresent, const TDesC8& aContentData) |
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169 { |
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170 CEncapsulatedContentInfo* self = new (ELeave) CEncapsulatedContentInfo(aContentInfoType, aIsEContentDataPresent, aContentData); |
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171 CleanupStack::PushL(self); |
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172 return self; |
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173 } |
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174 |
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175 CEncapsulatedContentInfo* CEncapsulatedContentInfo::NewL(TCmsContentInfoType aContentInfoType, TBool aIsEContentDataPresent, const TDesC8& aContentData) |
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176 { |
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177 CEncapsulatedContentInfo* self = NewLC(aContentInfoType, aIsEContentDataPresent, aContentData); |
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178 CleanupStack::Pop(self); |
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179 return self; |
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180 } |
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181 |
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182 CEncapsulatedContentInfo::CEncapsulatedContentInfo() |
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183 { |
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184 } |
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185 |
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186 CEncapsulatedContentInfo::CEncapsulatedContentInfo(TCmsContentInfoType aContentInfoType, TBool aIsEContentDataPresent, const TDesC8& aContentData) |
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187 :iContentType(aContentInfoType), |
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188 iIsContentDataPresent(aIsEContentDataPresent) |
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189 { |
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190 if (aIsEContentDataPresent) |
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191 { |
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192 iContentData.Set(aContentData); |
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193 } |
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194 } |
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195 |
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196 void CEncapsulatedContentInfo::ConstructL(const TDesC8& aRawData) |
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197 { |
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198 const TInt minItems = 1; // Must have OID |
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199 const TInt maxItems = 2; // Must have data |
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200 CArrayPtr<TASN1DecGeneric>* contentInfo = PKCS7ASN1::DecodeSequenceLC(aRawData, minItems, maxItems); |
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201 |
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202 //Decode Content Type |
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203 iContentType=(TCmsContentInfoType)(CmsUtils::DecodeContentTypeL(contentInfo->At(0))); |
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204 |
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205 //Decode Content Data |
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206 if(contentInfo->Count() == 2) |
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207 { |
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208 iIsContentDataPresent=ETrue; |
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209 const TASN1DecGeneric* contentInfoAt1 = contentInfo->At(1); |
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210 |
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211 //Decode [0] Explicit |
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212 if ( contentInfoAt1->Tag() == 0 || contentInfoAt1->Class() == EContextSpecific ) |
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213 { |
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214 //Decode Wrapper Octet string |
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215 TASN1DecGeneric decGen(contentInfoAt1->GetContentDER()); |
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216 decGen.InitL(); |
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217 if(decGen.Tag() == EASN1OctetString && decGen.Class() == EUniversal) |
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218 { |
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219 iContentData.Set(decGen.GetContentDER()); |
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220 } |
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221 else |
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222 { |
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223 //Wrapper is not an Octect String |
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224 User::Leave(KErrArgument); |
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225 } |
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226 } |
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227 else |
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228 { |
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229 //Not [0] Explicit |
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230 User::Leave(KErrArgument); |
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231 } |
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232 } |
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233 else |
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234 { |
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235 //No optional data |
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236 iContentData.Set(KNullDesC8()); |
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237 } |
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238 CleanupStack::PopAndDestroy(contentInfo); |
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239 } |
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240 |
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241 |
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242 CASN1EncSequence* CEncapsulatedContentInfo::EncodeASN1DERLC() const |
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243 { |
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244 // the root sequence contains the OID and the content data |
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245 CASN1EncSequence* root = CASN1EncSequence::NewLC(); |
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246 |
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247 //Encode the OID |
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248 CASN1EncObjectIdentifier* oid = CmsUtils::EncodeContentTypeLC(iContentType); |
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249 root->AddAndPopChildL(oid); |
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250 |
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251 //Encode the Content |
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252 if (iIsContentDataPresent) |
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253 { |
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254 //Wrapper Octect String |
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255 CASN1EncOctetString* octetString=CASN1EncOctetString::NewL(iContentData); |
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256 |
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257 // Add [0] EXPLICT |
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258 CASN1EncExplicitTag* Enc=CASN1EncExplicitTag::NewLC(octetString, 0); |
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259 root->AddAndPopChildL(Enc); |
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260 } |
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261 |
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262 return root; |
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263 } |
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264 |
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265 |
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266 EXPORT_C TBool CEncapsulatedContentInfo::IsContentDataPresent() const |
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267 { |
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268 return iIsContentDataPresent; |
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269 } |
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270 |
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271 EXPORT_C const TPtrC8 CEncapsulatedContentInfo::ContentData() const |
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272 { |
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273 return iContentData; |
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274 } |
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275 |
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276 EXPORT_C TCmsContentInfoType CEncapsulatedContentInfo::ContentType() const |
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277 { |
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278 return iContentType; |
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279 } |