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/*
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* Copyright (c) 2006-2009 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 <cmscontentinfo.h>
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#include <asn1dec.h>
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#include <asn1enc.h>
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#include "pkcs7asn1.h"
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#include "cmsutils.h"
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//
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//Implementation of CMS ContentInfo Identity
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//
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EXPORT_C CCmsContentInfo* CCmsContentInfo::NewLC(const TDesC8& aRawData)
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{
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CCmsContentInfo* self = new (ELeave) CCmsContentInfo();
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CleanupStack::PushL(self);
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self->ConstructL(aRawData);
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return self;
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}
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EXPORT_C CCmsContentInfo* CCmsContentInfo::NewL(const TDesC8& aRawData)
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{
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CCmsContentInfo* self = NewLC(aRawData);
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CleanupStack::Pop(self);
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return self;
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}
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EXPORT_C CCmsContentInfo* CCmsContentInfo::NewL(TCmsContentInfoType aContentInfoType, const TDesC8& aContentData)
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{
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CCmsContentInfo* self = NewLC(aContentInfoType, aContentData);
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CleanupStack::Pop(self);
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return self;
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}
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EXPORT_C CCmsContentInfo* CCmsContentInfo::NewLC(TCmsContentInfoType aContentInfoType, const TDesC8& aContentData)
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{
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CCmsContentInfo* self = new (ELeave) CCmsContentInfo(aContentInfoType, aContentData);
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CleanupStack::PushL(self);
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return self;
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}
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EXPORT_C CCmsContentInfo::~CCmsContentInfo()
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{
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}
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CCmsContentInfo::CCmsContentInfo()
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{
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}
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CCmsContentInfo::CCmsContentInfo(TCmsContentInfoType aContentInfoType, const TDesC8& aContentData)
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:iContentType(aContentInfoType)
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{
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iContentData.Set(aContentData);
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}
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void CCmsContentInfo::ConstructL(const TDesC8& aRawData)
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{
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const TInt minItems = 2; // Must have OID
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const TInt maxItems = 2; // Must have data
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CArrayPtr<TASN1DecGeneric>* contentInfo = PKCS7ASN1::DecodeSequenceLC(aRawData, minItems, maxItems);
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//Decode Content Type
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iContentType=(TCmsContentInfoType)(CmsUtils::DecodeContentTypeL(contentInfo->At(0)));
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//Decode Content Data
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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 (iContentType==EContentTypeData)
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{
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if (decGen.Tag()!=EASN1OctetString || decGen.Class()!=EUniversal)
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{
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User::Leave(KErrArgument);
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}
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else
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{
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iContentData.Set(decGen.GetContentDER());
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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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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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EXPORT_C CASN1EncSequence* CCmsContentInfo::EncodeASN1DERLC() const
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{
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// the root sequence contains the OID and the content data
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CASN1EncSequence* root = CASN1EncSequence::NewLC();
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//Encode the OID
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CASN1EncObjectIdentifier* oid = CmsUtils::EncodeContentTypeLC(iContentType);
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root->AddAndPopChildL(oid);
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CASN1EncBase* enc(NULL);
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if (iContentType==EContentTypeData)
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{
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enc=CASN1EncOctetString::NewL(iContentData);
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}
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else
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{
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//Encode the Content
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//iContentData already encoded in sequence
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//so just rebuild the structure
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enc = CASN1EncEncoding::NewL(iContentData);
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}
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// Add [0] EXPLICT
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CASN1EncExplicitTag* Enc=CASN1EncExplicitTag::NewLC(enc, 0);
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root->AddAndPopChildL(Enc);
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return root;
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}
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EXPORT_C const TPtrC8 CCmsContentInfo::ContentData() const
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{
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return iContentData;
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}
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EXPORT_C TCmsContentInfoType CCmsContentInfo::ContentType() const
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{
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return iContentType;
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}
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//
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//Implementation of CMS EncapsulatedContentInfo Identity
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//
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CEncapsulatedContentInfo* CEncapsulatedContentInfo::NewLC(const TDesC8& aRawData)
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{
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CEncapsulatedContentInfo* self = new (ELeave) CEncapsulatedContentInfo();
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CleanupStack::PushL(self);
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self->ConstructL(aRawData);
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return self;
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}
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CEncapsulatedContentInfo* CEncapsulatedContentInfo::NewL(const TDesC8& aRawData)
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{
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CEncapsulatedContentInfo* self = NewLC(aRawData);
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CleanupStack::Pop(self);
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return self;
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}
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CEncapsulatedContentInfo* CEncapsulatedContentInfo::NewLC(TCmsContentInfoType aContentInfoType, TBool aIsEContentDataPresent, const TDesC8& aContentData)
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{
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CEncapsulatedContentInfo* self = new (ELeave) CEncapsulatedContentInfo(aContentInfoType, aIsEContentDataPresent, aContentData);
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CleanupStack::PushL(self);
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return self;
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}
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CEncapsulatedContentInfo* CEncapsulatedContentInfo::NewL(TCmsContentInfoType aContentInfoType, TBool aIsEContentDataPresent, const TDesC8& aContentData)
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{
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CEncapsulatedContentInfo* self = NewLC(aContentInfoType, aIsEContentDataPresent, aContentData);
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CleanupStack::Pop(self);
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return self;
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}
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CEncapsulatedContentInfo::CEncapsulatedContentInfo()
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{
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}
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CEncapsulatedContentInfo::CEncapsulatedContentInfo(TCmsContentInfoType aContentInfoType, TBool aIsEContentDataPresent, const TDesC8& aContentData)
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:iContentType(aContentInfoType),
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iIsContentDataPresent(aIsEContentDataPresent)
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{
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if (aIsEContentDataPresent)
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{
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iContentData.Set(aContentData);
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}
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}
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void CEncapsulatedContentInfo::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; // Must have data
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CArrayPtr<TASN1DecGeneric>* contentInfo = PKCS7ASN1::DecodeSequenceLC(aRawData, minItems, maxItems);
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//Decode Content Type
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iContentType=(TCmsContentInfoType)(CmsUtils::DecodeContentTypeL(contentInfo->At(0)));
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//Decode Content Data
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if(contentInfo->Count() == 2)
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{
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iIsContentDataPresent=ETrue;
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const TASN1DecGeneric* contentInfoAt1 = contentInfo->At(1);
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//Decode [0] Explicit
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if ( contentInfoAt1->Tag() == 0 || contentInfoAt1->Class() == EContextSpecific )
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{
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//Decode Wrapper Octet string
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TASN1DecGeneric decGen(contentInfoAt1->GetContentDER());
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decGen.InitL();
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if(decGen.Tag() == EASN1OctetString && decGen.Class() == EUniversal)
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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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//Wrapper is not an Octect String
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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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//Not [0] Explicit
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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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//No optional data
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iContentData.Set(KNullDesC8());
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}
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CleanupStack::PopAndDestroy(contentInfo);
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}
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CASN1EncSequence* CEncapsulatedContentInfo::EncodeASN1DERLC() const
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{
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// the root sequence contains the OID and the content data
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CASN1EncSequence* root = CASN1EncSequence::NewLC();
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//Encode the OID
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CASN1EncObjectIdentifier* oid = CmsUtils::EncodeContentTypeLC(iContentType);
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root->AddAndPopChildL(oid);
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//Encode the Content
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if (iIsContentDataPresent)
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{
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//Wrapper Octect String
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CASN1EncOctetString* octetString=CASN1EncOctetString::NewL(iContentData);
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// Add [0] EXPLICT
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CASN1EncExplicitTag* Enc=CASN1EncExplicitTag::NewLC(octetString, 0);
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root->AddAndPopChildL(Enc);
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}
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return root;
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}
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EXPORT_C TBool CEncapsulatedContentInfo::IsContentDataPresent() const
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{
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return iIsContentDataPresent;
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}
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EXPORT_C const TPtrC8 CEncapsulatedContentInfo::ContentData() const
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{
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return iContentData;
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}
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EXPORT_C TCmsContentInfoType CEncapsulatedContentInfo::ContentType() const
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{
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return iContentType;
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}
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