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/*
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* Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include "pkcs7contentinfo_v2.h"
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#include "pkcs7asn1.h"
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EXPORT_C CPKCS7ContentInfo* CPKCS7ContentInfo::NewL(const TDesC8& aRawData)
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{
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CPKCS7ContentInfo* self = new (ELeave) CPKCS7ContentInfo();
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CleanupStack::PushL(self);
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self->ConstructL(aRawData);
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CleanupStack::Pop(self);
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return self;
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}
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CPKCS7ContentInfo::~CPKCS7ContentInfo()
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{
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}
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EXPORT_C CPKCS7ContentInfo::TContentInfoType CPKCS7ContentInfo::ContentType() const
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{
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return iContentType;
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}
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EXPORT_C const TPtrC8 CPKCS7ContentInfo::ContentData() const
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{
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return iContentData;
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}
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CPKCS7ContentInfo::CPKCS7ContentInfo(void)
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{
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}
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void CPKCS7ContentInfo::ConstructL(const TDesC8& aRawData)
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{
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const TInt minItems = 1; // Must have OID
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const TInt maxItems = 2; // May have data
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CArrayPtr<TASN1DecGeneric>* contentInfo = PKCS7ASN1::DecodeSequenceLC(aRawData, minItems, maxItems);
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const TASN1DecGeneric* contentInfoAt0 = contentInfo->At(0);
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// Checks its a oid id
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if(contentInfoAt0->Tag()==EASN1ObjectIdentifier || contentInfoAt0->Class() == EUniversal)
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{
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// Gets the oid
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TASN1DecObjectIdentifier oidDec;
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HBufC* oidVal = oidDec.DecodeDERL(*contentInfo->At(0));
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CleanupStack::PushL(oidVal);
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// Data itself is optional so make sure its there
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if(contentInfo->Count() == 2)
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{
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const TASN1DecGeneric* contentInfoAt1 = contentInfo->At(1);
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if ( contentInfoAt1->Tag() == 0 || contentInfoAt1->Class() == EContextSpecific )
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{
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TASN1DecGeneric decGen(contentInfoAt1->GetContentDER());
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decGen.InitL();
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if(*oidVal == KPkcs7DataOID)
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{
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// ContentData is OctetString if ContentType is Data
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if(decGen.Tag() == EASN1OctetString)
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{
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iContentData.Set(decGen.GetContentDER());
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}
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else
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{
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User::Leave(KErrArgument);
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}
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}
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else
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{
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iContentData.Set(decGen.Encoding());
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}
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}
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}
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else
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{
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iContentData.Set(KNullDesC8());
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}
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// Checks if it is data OID.
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if(*oidVal == KPkcs7DataOID)
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{
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// The Content Type is indicated by an Integer.
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// Here if Content Type is equal to Data then,it is represented by 1
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// 1 indicates the numeric value of last element in the PKCS7 Data OID.
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iContentType = EContentTypeData;
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}
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else if(*oidVal == KPkcs7SignedDataOID)
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{
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// The Content Type is indicated by an Integer.
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// Here if Content Type is equal to SignedData then,it is represented by 2
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// 2 indicates the numeric value of last element in the PKCS7 SignedData OID.
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iContentType = EContentTypeSignedData;
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}
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else if(*oidVal == KPkcs7EnvelopedDataOID)
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{
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// The Content Type is indicated by an Integer.
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// Here if Content Type is equal to EnvelopedData then,it is represented by 3.
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// 3 indicates the numeric value of last element in the PKCS7 EnvelopedData OID.
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iContentType = EContentTypeEnvelopedData;
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}
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else if(*oidVal == KPkcs7SignedAndEnvelopedDataOID)
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{
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// The Content Type is indicated by an Integer.
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// Here if Content Type is equal to SignedAndEnvelopedData then,it is represented by 4.
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// 4 indicates the numeric value of last element in the PKCS7 SignedAndEnvelopedData OID.
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iContentType = EContentTypeSignedAndEnvelopedData;
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}
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else if(*oidVal == KPkcs7DigestedDataOID)
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{
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// The Content Type is indicated by an Integer.
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// Here if Content Type is equal to DigestedData then,it is represented by 5.
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// 5 indicates the numeric value of last element in the PKCS7 DigestedData OID.
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iContentType = EContentTypeDigestedData;
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}
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else if(*oidVal == KPkcs7EncryptedDataOID)
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{
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// The Content Type is indicated by an Integer.
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// Here if Content Type is equal to EncryptedData then,it is represented by 6
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// 6 indicates the numeric value of last element in the PKCS7 EncryptedData OID.
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iContentType = EContentTypeEncryptedData;
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}
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else
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{
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User::Leave(KErrNotSupported);
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}
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CleanupStack::PopAndDestroy(oidVal);
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}
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else
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{
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User::Leave(KErrArgument);
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}
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CleanupStack::PopAndDestroy(contentInfo);
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}
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