/*

* Copyright (c) 2002-2004 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  ?Description

*

*/

// INCLUDE FILES

#include <e32base.h>

#include <f32file.h>

#include <utf.h>

#include <WSPDecoder.h>

#include "Oma1Dcf.h"

#include "DRMRightsClient.h"

#include <centralrepository.h>

#include <UTF.h>

#include "DrmUtilityInternalcrkeys.h"      // Cenrep extension for OmaBased

// LOCAL CONSTANTS AND MACROS

_LIT8(KMimeApplication, "application");

_LIT8(KMimeText, "text");

_LIT8(KMimeAudio, "audio");

_LIT8(KMimeImage, "image");

_LIT8(KMimeVideo, "video");

_LIT8(KMimeModel, "model");

_LIT8(KMimeMessage, "message");

_LIT8(KMimeMultipart, "multipart");

_LIT8(KXHeader, "x-");

_LIT8(KColon, ":");

//_LIT8(KSemiColon, ";");

//_LIT8(KNewLine, "\n");

_LIT8(KEndLine, "\r\n");

const TInt KCenRepDataLength( 50 );

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// COma1Dcf::COma1Dcf

// C++ default constructor can NOT contain any code, that

// might leave.

// -----------------------------------------------------------------------------

//

COma1Dcf::COma1Dcf():

    iHeaders(NULL)

    {

    }

// -----------------------------------------------------------------------------

// COma1Dcf::ConstructL

// Symbian 2nd phase constructor can leave.

// -----------------------------------------------------------------------------

//

void COma1Dcf::ConstructL(const RFile& aFile)

    {

    CDcfCommon::ConstructL(aFile);

    User::LeaveIfError(ReadHeaderL());

    }

void COma1Dcf::ConstructL(const TDesC8& aMemoryBlock)

    {

    User::LeaveIfError(ReadHeaderL(aMemoryBlock));

    iData = aMemoryBlock.AllocL();

    }

// -----------------------------------------------------------------------------

// COma1Dcf::FetchOmaBasedInfoL

// -----------------------------------------------------------------------------

//

HBufC8* COma1Dcf::FetchOmaBasedInfoL()

    {

    CRepository* repository( NULL );

    RBuf bOmaBasedMimeType;

    HBufC8* mimetype = NULL;

    CleanupClosePushL(bOmaBasedMimeType);

    bOmaBasedMimeType.CreateL( KCenRepDataLength );    

    repository = CRepository::NewL( KCRUidOmaBased );

    CleanupStack::PushL( repository );

    User::LeaveIfError(repository->Get( KOmaBasedMimeType, bOmaBasedMimeType ));

    mimetype = CnvUtfConverter::ConvertFromUnicodeToUtf8L( bOmaBasedMimeType );

    CleanupStack::PopAndDestroy( repository );

    CleanupStack::PopAndDestroy();

    return mimetype;

    }

// -----------------------------------------------------------------------------

// COma1Dcf::NewL

// Two-phased constructor.

// -----------------------------------------------------------------------------

//

EXPORT_C COma1Dcf* COma1Dcf::NewL(const RFile& aFile)

    {

    COma1Dcf* self = new(ELeave) COma1Dcf;

    CleanupStack::PushL(self);

    self->ConstructL(aFile);

    CleanupStack::Pop();

    return self;

    }

// -----------------------------------------------------------------------------

// COma1Dcf::

// 

// -----------------------------------------------------------------------------

//

EXPORT_C COma1Dcf* COma1Dcf::NewL(const TDesC8& aMemoryBlock)

    {

    COma1Dcf* self = new(ELeave) COma1Dcf;

    CleanupStack::PushL(self);

    self->ConstructL(aMemoryBlock);

    CleanupStack::Pop();

    return self;

    }

// -----------------------------------------------------------------------------

// COma1Dcf::

// 

// -----------------------------------------------------------------------------

//

EXPORT_C COma1Dcf::~COma1Dcf()

    {

    delete iHeaders;

    }

// -----------------------------------------------------------------------------

// COma1Dcf::

// 

// -----------------------------------------------------------------------------

//

TInt COma1Dcf::ReadHeaderL(const TDesC8& aMemoryBlock)

    {

    TInt r = KErrNone;

    TInt cidLength = 0;

    TInt mimeLength = 0;

    TInt fieldLength = 0;

    TBuf8<10> lengthFields;

    TUint32 length;

    TPtr8 ptr(NULL,0,0);

    if (aMemoryBlock.Length()<3)

        {

        User::Leave(KErrArgument);

        }

    iVersion = aMemoryBlock[0];

    if (iVersion!=1)

        {

        // for OMA Version 1, DCF version must be 1

        User::Leave(KErrArgument);

        }

    mimeLength = aMemoryBlock[1];

    cidLength = aMemoryBlock[2];

    if (mimeLength + cidLength + 3 + 5 + 5 > aMemoryBlock.Length())

        {

        User::Leave(KErrArgument);

        }

    if (mimeLength!=0)

        {

        iMimeType = aMemoryBlock.Mid(3, mimeLength).AllocL();

        ptr.Set(iMimeType->Des());

        r = ptr.FindF(_L8("/"));

        if (r==KErrNotFound)

            {

            User::Leave(KErrArgument);

            }

        }

    else

        {

        User::Leave(KErrArgument);

        }

    if (cidLength!=0)

        {

        iContentID = aMemoryBlock.Mid(3 + mimeLength, cidLength).AllocL();

        }

    else

        {

        User::Leave(KErrArgument);    

        }

    lengthFields.Copy(aMemoryBlock.Mid(3 + mimeLength + cidLength, 10));

    TWspPrimitiveDecoder decoder(lengthFields);

    fieldLength = decoder.UintVar(length);

    if( fieldLength < 0 ) 

        {

        User::Leave(KErrArgument);

        }

    iHeaderLength = length;

    fieldLength += decoder.UintVar(length);

    if( fieldLength < 0 )

        {

        User::Leave(KErrArgument);

        }

    iDataLength = length;

    iOffset = 3 + mimeLength + cidLength + fieldLength + iHeaderLength;

    if (iDataLength == 0)

        {

        iDataLength = aMemoryBlock.Length() - iOffset;

        }

    iPlainTextLength = iDataLength - KDCFKeySize;

    iPlainTextLengthValid = EFalse;

    if (mimeLength + cidLength + 3 + 5 + 5 + iHeaderLength <=

        aMemoryBlock.Length())

        {

        iHeaders = aMemoryBlock.Mid(3 + mimeLength + cidLength +

                                    fieldLength, iHeaderLength).AllocL();

        ReadHeaderValuesL();

        }

    return r;

    }

// -----------------------------------------------------------------------------

// COma1Dcf::ReadHeaderValuesL

// 

// -----------------------------------------------------------------------------

//

void COma1Dcf::ReadHeaderValuesL(void)

    {

    TPtrC8 ptr(NULL, 0);

    if (GetHeaderL(KRightsIssuer, ptr) == KErrNone)

        {

        if( iRightsIssuerURL )

            {

            delete iRightsIssuerURL;

            iRightsIssuerURL = NULL;

            }

        iRightsIssuerURL = ptr.AllocL();

        }

    if (GetHeaderL(KContentName, ptr) == KErrNone)

        {

        if( iTitle ) 

            {

            delete iTitle;

            iTitle = NULL;

            }        

        iTitle = ptr.AllocL();

        }

    if (GetHeaderL(KContentDescription, ptr) == KErrNone)

        {

        if( iDescription )

            {

            delete iDescription;

            iDescription = NULL;

            }          

        iDescription = ptr.AllocL();

        }

    if (GetHeaderL(KIconURI, ptr) == KErrNone)

        {

        if( iIconUri )

            {

            delete iIconUri;

            iIconUri = NULL;

            }         

        iIconUri = ptr.AllocL();

        }

    }

// -----------------------------------------------------------------------------

// COma1Dcf::

// 

// -----------------------------------------------------------------------------

//

TInt COma1Dcf::ReadHeaderL(void)

    {

    TInt r = KErrNone;

    TInt pos = 0;

    TUint8 v = 0;

    TPtr8 p(&v, 1, 1);

    TInt cidLength = 0;

    TInt mimeLength = 0;

    TInt fieldLength = 0;

    TBuf8<10> lengthFields;

    TUint32 length;

    TInt size;

    iFile.Size(size);

    if (size<3)

        {

        User::Leave(KErrArgument);

        }

    iFile.Seek(ESeekStart, pos);

    iFile.Read(p);

    iVersion = v;

    if (iVersion!=1)

        {

        // for OMA Version 1, DCF version must be 1

        User::Leave(KErrArgument);

        }

    iFile.Read(p);

    mimeLength = v;

    if (mimeLength==0)

        {

        User::Leave(KErrArgument);

        }

    iFile.Read(p);

    cidLength = v;

    if (cidLength==0)

        {

        User::Leave(KErrArgument);

        }

    iMimeType = HBufC8::NewMax(mimeLength);

    User::LeaveIfNull(iMimeType);

    p.Set(iMimeType->Des());

    iFile.Read(p, mimeLength);

    p.Set(iMimeType->Des());

    r = p.FindF(_L8("/"));

    if (r==KErrNotFound)

        {

        User::Leave(KErrArgument);

        }

    iContentID = HBufC8::NewMax(cidLength);

    User::LeaveIfNull(iContentID);

    p.Set(iContentID->Des());

    iFile.Read(p, cidLength);

    pos = 0;

    iFile.Seek(ESeekCurrent, pos);

    iFile.Read(lengthFields);

    TWspPrimitiveDecoder decoder(lengthFields);

    fieldLength = decoder.UintVar(length);

    if( fieldLength < 0 )

        {

        User::Leave(KErrArgument);

        }

    iHeaderLength = length;

    fieldLength += decoder.UintVar(length);

    if( fieldLength < 0 )

        {

        User::Leave(KErrArgument);

        }

    iDataLength = length;

    iOffset = pos + fieldLength + iHeaderLength;

    if (iDataLength == 0)

        {

        iDataLength = size - iOffset;

        }

    iPlainTextLength = iDataLength - KDCFKeySize;

    iPlainTextLengthValid = EFalse;

    pos = pos + fieldLength;

    iFile.Seek(ESeekStart, pos);

    iHeaders = HBufC8::NewL(iHeaderLength);

    p.Set(iHeaders->Des());

    iFile.Read(p, iHeaderLength);

    ReadHeaderValuesL();

    return r;

    }

// -----------------------------------------------------------------------------

// COma1Dcf::

// 

// -----------------------------------------------------------------------------

//

EXPORT_C TBool COma1Dcf::IsValidDcf(const TDesC8& aDcfFragment)

    {

    TPtrC8 mimeType;

    TInt i;

    TBool r = EFalse;

    TInt error = KErrNone;

    HBufC8* omaBasedBuf = NULL;

    if (aDcfFragment.Length() > 15)

        {

        i = aDcfFragment.Right(aDcfFragment.Length() - 3).Locate('/');

        if (aDcfFragment[0] == 1 && i != KErrNotFound)

            {

            mimeType.Set(aDcfFragment.Mid(3, i));

            if (mimeType.CompareF(KMimeImage) == 0 ||

                mimeType.CompareF(KMimeAudio) == 0 ||

                mimeType.CompareF(KMimeApplication) == 0 ||

                mimeType.CompareF(KMimeText) == 0 ||

                mimeType.CompareF(KMimeModel) == 0 ||

                mimeType.CompareF(KMimeMessage) == 0 ||

                mimeType.CompareF(KMimeVideo) == 0 ||

                mimeType.CompareF(KMimeMultipart) == 0 ||

                aDcfFragment.Mid(3, 2).CompareF(KXHeader) == 0)

                {

                r = ETrue;

                // Check for specific mimetype

                TRAP( error, omaBasedBuf = FetchOmaBasedInfoL() );

                if( !error )

                    {

                    mimeType.Set(aDcfFragment.Mid(3, 

                            omaBasedBuf->Length()));

                    if (mimeType.CompareF( *omaBasedBuf ) == 0)

                        {

                        r = EFalse;

                        }

                    }

                delete omaBasedBuf;

                }

            }

        }

    return r;

    }

// -----------------------------------------------------------------------------

// COma1Dcf::

// 

// -----------------------------------------------------------------------------

//

TInt COma1Dcf::CheckUniqueId(const TDesC& aUniqueId)

	{

	TInt r = CDcfCommon::CheckUniqueId(aUniqueId);

	if (r == KErrNotFound)

	    {

	    HBufC8* id = NULL;

    	TRAPD(err, id = CnvUtfConverter::ConvertFromUnicodeToUtf8L(aUniqueId));

    	if (err == KErrNone)

    	    {

    	    if (iContentID->Compare(*id) == 0)

    		    {

    		    r = 0;

    		    }

            }

        else

            {

            r = err;

            }

    	delete id;

    	}

	return r;

	}

// -----------------------------------------------------------------------------

// COma1Dcf::

// 

// -----------------------------------------------------------------------------

//

TInt COma1Dcf::OpenPart(const TDesC& aUniqueId)

	{

	return OpenPart(CheckUniqueId(aUniqueId));

	}

// -----------------------------------------------------------------------------

// COma1Dcf::

// 

// -----------------------------------------------------------------------------

//

TInt COma1Dcf::OpenPart(TInt aPart)

	{

	if (aPart == 0)

		{

		return KErrNone;

		}

	else

		{

		return KErrNotFound;

		}

	}

// -----------------------------------------------------------------------------

// COma1Dcf::

// 

// -----------------------------------------------------------------------------

//

void COma1Dcf::GetPartIdsL(RPointerArray<HBufC8>& aPartList)

    {

    aPartList.ResetAndDestroy();

    aPartList.AppendL(iContentID->Des().AllocL());

    }

// -----------------------------------------------------------------------------

// COma1Dcf::GetHeaderL

// 

// -----------------------------------------------------------------------------

//

EXPORT_C TInt COma1Dcf::GetHeaderL(

    const TDesC8& aHeaderName,

    TPtrC8& aHeaderValue)

    {

    TInt i;

    TInt j;

    TPtrC8 ptr( iHeaders->Des() );

    // Add Room for CRLF and Semicolon:

    HBufC8* buffer = HBufC8::NewMaxLC( aHeaderName.Length() + 3 );  

    TPtr8 searchBuf( const_cast<TUint8*>(buffer->Ptr()), 0, buffer->Des().MaxSize() );  

    searchBuf.Copy(aHeaderName);

    searchBuf.Append(KColon);