/*

 * Copyright (c) 2006-2009 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:

 *

 */

#include <http/rhttptransaction.h>

#include <barsc.h>

#include <drmcommon.h>

#include <f32file.h>

#include <s32buf.h>

#include <drmmessageparser.h>

#include <caf/caf.h>

#include <oma2agent.h>

#include "httpfilterdrmdatasupplier.h"

#include "httpfilterdrm.h"

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

const TInt KMinContentSizeToGetTheURI = 520;

const TInt KDefaultSize( 2048 );

const TInt KWholeDataPart( -1 );

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

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

// CHTTPFilterDRMDataSupplier::NewL

// Two-phase constructor

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

//

CHTTPFilterDRMDataSupplier* CHTTPFilterDRMDataSupplier::NewL( TInt aTransId,

    MHTTPDataSupplier* iDataBody, CHTTPFilterDRM* aOwner )

    {

    CHTTPFilterDRMDataSupplier* self =

        new ( ELeave ) CHTTPFilterDRMDataSupplier( aTransId, iDataBody,

            aOwner );

    CleanupStack::PushL( self );

    self->ConstructL( KDefaultSize );

    CleanupStack::Pop( self );

    return self;

    }

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

// CHTTPFilterDRMDataSupplier::NewL

// Two-phase constructor, CFM

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

//	

CHTTPFilterDRMDataSupplier* CHTTPFilterDRMDataSupplier::NewL( TInt aTransId,

    MHTTPDataSupplier* iDataBody, TProcessedContentType aType,

    CHTTPFilterDRM* aOwner )

    {

    CHTTPFilterDRMDataSupplier* self =

        new ( ELeave ) CHTTPFilterDRMDataSupplier( aTransId, iDataBody,

            aOwner );

    CleanupStack::PushL( self );

    self->ConstructL( KDefaultSize, aType );

    CleanupStack::Pop( self );

    return self;

    }

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

// CHTTPFilterDRMDataSupplier::CHTTPFilterDRMDataSupplier

// constructor

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

//

CHTTPFilterDRMDataSupplier::CHTTPFilterDRMDataSupplier( TInt aTransId,

    MHTTPDataSupplier* iDataBody, CHTTPFilterDRM* aOwner ) :

    iTransId( aTransId ), iBufPtr( 0, 0 ), iPHData( iDataBody ), iSendReady(

    {

    iDRMMessageParser = 0;

    iPrevPos = 0;

    iMemBuf = 0;

    iDataPartSize = KWholeDataPart;

    }

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

// CHTTPFilterDRMDataSupplier::ConstructL

// Data allocation constructor, which leaves

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

//

void CHTTPFilterDRMDataSupplier::ConstructL( TInt aSize )

    {

    // create the output buffer

    iBuf = HBufC8::NewMaxL( aSize );

    iBufPtr.Set( iBuf->Des() );

    iBufPtr.SetLength( 0 );

    // setup the memory buffer

    iMemBuf = TDRMMemBuf::NewL( aSize );

    // create the DRM client and the writable memory stream

    iDRMMessageParser = CDRMMessageParser::NewL();

    Attach( iMemBuf );

    iDRMMessageParser->InitializeMessageParserL( *this );

    }

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

// CHTTPFilterDRMDataSupplier::ConstructL

// Data allocation constructor, which leaves, CFM

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

//

void CHTTPFilterDRMDataSupplier::ConstructL( TInt aSize,

    TProcessedContentType /*aType*/)

    {

    // create the output buffer

    iBuf = HBufC8::NewMaxL( aSize );

    iBufPtr.Set( iBuf->Des() );

    iBufPtr.SetLength( 0 );

    // setup the memory buffer

    iMemBuf = TDRMMemBuf::NewL( aSize );

    iDRMOma1DcfCreator = COma1DcfCreator::NewL();

    Attach( iMemBuf );

    }

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

// CHTTPFilterDRMDataSupplier::~CHTTPFilterDRMDataSupplier()

// Destructor

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

//

CHTTPFilterDRMDataSupplier::~CHTTPFilterDRMDataSupplier()

    {

    // First make sure that we have completed everything, before we delete

    // Anything essential

    if ( !iSendReady ) // the destructor is called by other filters

        {

        if ( iDRMMessageParser )

            {

            TRAP_IGNORE( iDRMMessageParser->FinalizeMessageParserL() );

            }

        }

    if ( iDRMMessageParser )

        {

        delete iDRMMessageParser;

        iDRMMessageParser = NULL;

        }

    if ( iMemBuf )

        {

        delete iMemBuf;

        iMemBuf = NULL;

        }

    // This used to be deleted first, but this of course caused the finalize to fail

    if ( iBuf )

        {

        delete iBuf;

        iBuf = NULL;

        }

    iPHData = 0;

    if ( iContentMimeType )

        {

        delete iContentMimeType;

        iContentMimeType = NULL;

        }

    if ( iDRMOma1DcfCreator )

        {

        delete iDRMOma1DcfCreator;

        iDRMOma1DcfCreator = NULL;

        }

    }

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

// CHTTPFilterDRMDataSupplier::AppendDataL

// Append a bulk of data into the supplier's buffer

// reallocation is needed when buffer is not big enough

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

//

void CHTTPFilterDRMDataSupplier::AppendDataL( const TDesC8& aDataPart )

    {

    TInt curLen = iBufPtr.Length();

    TInt reqLen = curLen + aDataPart.Length();

    if ( reqLen > iBufPtr.MaxLength() )

        {

        TRAPD( error, ( iBuf = iBuf->ReAllocL( reqLen + aDataPart.Length() ) ) ); // realloc a bit more data, this should not happen often

        if ( error != KErrNone )

            User::Leave( KErrNoMemory );

        iBufPtr.Set( iBuf->Des() );

        iBufPtr.SetLength( curLen );

        }

    iBufPtr.Append( aDataPart );

    }

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

// CHTTPFilterDRMDataSupplier::EncryptContentL

// encrypt the content with DRM client

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

//

void CHTTPFilterDRMDataSupplier::ProcessDataPartL()

    {

    // get the data part

    TPtrC8 dataPart;

    TBool lastChunk = iPHData->GetNextDataPart( dataPart );

    /** Support for Hutchinson's content protection scheme, CFM

     *

     */

    // encrypt the data

    if ( iProcessedContentType == EStandardDRMContent )

        {

        TRAPD( err, iDRMMessageParser->ProcessMessageDataL( dataPart ) );

        // error happens

        if ( err != KErrNone )

            {

            iDRMMessageParser->FinalizeMessageParserL();

            User::Leave( err );

            }

        if ( lastChunk )

            {

            iSendReady = ETrue;

            iDRMMessageParser->FinalizeMessageParserL();

            }

        }

    else if ( iProcessedContentType

        == EHutchinsonCFMWithRingingToneNoFirstChunk )

        {

        //create rights

        CDRMRights* rights = CDRMRights::NewL();

        CleanupStack::PushL( rights );

        // Asset contains the content id

        // DrmAsset.h

        CDRMAsset* asset = CDRMAsset::NewLC();

        _LIT8(KContentURI, "flk:flkS60_3_0_Hutchinson_2005");

        asset->iUid = KContentURI().AllocL(); // This will be freed by the assets destructor

        // Set the asset to the rights class, it will duplicate the asset

        rights->SetAssetL( *asset );

        CleanupStack::PopAndDestroy( asset ); // Asset

        // DRMPermission.h

        CDRMPermission* permission = CDRMPermission::NewLC();

        // DRMConstraint.h

        // DRMTypes.h

        permission->iPlay = CDRMConstraint::NewL();

        permission->iDisplay = CDRMConstraint::NewL();

        permission->iExecute = CDRMConstraint::NewL();

        permission->iPrint = CDRMConstraint::NewL();

        permission->iAvailableRights = ERightsPlay | ERightsDisplay

            | ERightsExecute | ERightsPrint;

        permission->iRightsObjectVersion.iVersionMain = 1; // major version for Oma 1 Rights Objects		

        // "ringtone=no" present 

        permission->iInfoBits = ENoRingingTone;

        // Set the permission to the rights class, it will duplicate the permission

        rights->SetPermissionL( *permission );

        CleanupStack::PopAndDestroy( permission ); // Permission

        //initializing

        iDRMOma1DcfCreator->EncryptInitializeL( *this,

            iContentMimeType->Des(), rights );

        //process current chunk

        TRAPD(err, iDRMOma1DcfCreator->EncryptUpdateL(dataPart));

        if ( err )

            {

            iDRMOma1DcfCreator->EncryptFinalizeL();

            User::Leave( err );

            }

        // if there is only one chunk

        if ( lastChunk )

            {

            iSendReady = ETrue;

            iDRMOma1DcfCreator->EncryptFinalizeL();

            }

        CleanupStack::PopAndDestroy( rights );

        iProcessedContentType = EHutchinsonCFMNoContinuation;

        }

    else if ( iProcessedContentType == EHutchinsonCFMNoFirstChunk )

        {

        //initializing

        iDRMOma1DcfCreator->EncryptInitializeL( *this,

            iContentMimeType->Des(), NULL);

        //process current chunk

        TRAPD(err, iDRMOma1DcfCreator->EncryptUpdateL(dataPart));

        if ( err )

            {

            iDRMOma1DcfCreator->EncryptFinalizeL();

            User::Leave( err );

            }

        // if there is only one chunk

        if ( lastChunk )

            {

            iSendReady = ETrue;

            iDRMOma1DcfCreator->EncryptFinalizeL();

            }

        iProcessedContentType = EHutchinsonCFMNoContinuation;

        }

    else if ( iProcessedContentType == EHutchinsonCFMNoContinuation )

        {

        TRAPD(err, iDRMOma1DcfCreator->EncryptUpdateL(dataPart));

        if ( err )

            {

            iDRMOma1DcfCreator->EncryptFinalizeL();

            User::Leave( err );

            }

        if ( lastChunk )

            {

            iSendReady = ETrue;

            iDRMOma1DcfCreator->EncryptFinalizeL();

            }

        }

    else

        {

        User::Leave( KErrUnknown );

        }

    iPHData->ReleaseData();

    }

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

// CHTTPFilterDRMDataSupplier::GetNextDataPart

// virtual methods from MHTTPDataSupplier

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

//

TBool CHTTPFilterDRMDataSupplier::GetNextDataPart( TPtrC8& aDataPart )

    {

    if ( iDataPartSize == KWholeDataPart )

        {

        aDataPart.Set( iMemBuf->iBuf->GetPtr() );

        iDataPartSize = aDataPart.Length();

        }

        {

        aDataPart.Set( iMemBuf->iBuf->GetPtr().Left( iDataPartSize ) );

        }

    }

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

// CHTTPFilterDRMDataSupplier::ReleaseData

// virtual methods from MHTTPDataSupplier

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

//

void CHTTPFilterDRMDataSupplier::ReleaseData()

    {

        {

        TRAP_IGNORE( Sink()->SeekL( MStreamBuf::EWrite, TStreamPos(0) ) );

        if ( iSendReady )

            {

            iOwner->DeleteDataSupplier( iTransId );

            }

        }

    else

        {

        //Remove only consumed data part

        HBufC8* b( iMemBuf->iBuf->GetPtr().Mid( iDataPartSize ).AllocLC() );

        TRAP_IGNORE( Sink()->SeekL( MStreamBuf::EWrite, TStreamPos(0) ) );

        // Warning: assuming sink is big enough for write of whole b.

        TRAP_IGNORE( Sink()->WriteL( b->Ptr(), b->Length() ) );

        CleanupStack::PopAndDestroy( b );

        // Update data part size to available data.

        iDataPartSize = KWholeDataPart;

        }

    }

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

// CHTTPFilterDRMDataSupplier::OverallDataSize

// virtual methods from MHTTPDataSupplier

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

//

TInt CHTTPFilterDRMDataSupplier::OverallDataSize()

    {

    return KErrNotFound;

    }

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

// CHTTPFilterDRMDataSupplier::Reset

// virtual methods from MHTTPDataSupplier

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

//

TInt CHTTPFilterDRMDataSupplier::Reset()

    {

    return KErrNone;

    }

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

// CHTTPFilterDRMDataSupplier::SetContentMimeTypeL

// Sets the MIME type of comming content - used for ringingtone functionality

// Caller does not care about freeing this buffer, CFM

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

//

void CHTTPFilterDRMDataSupplier::SetContentMimeTypeL( const TDesC8& aMimeType )

    {

    //in case someone call this function more than once

    delete iContentMimeType;

    iContentMimeType = NULL;

    iContentMimeType = aMimeType.AllocL();

    }

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

// CHTTPFilterDRMDataSupplier::SetEstimatedArrivalTime

// Sets the estimated arrival time, the x-oma-drm-separate-delivery header

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

//

#ifdef __DRM_FULL

void CHTTPFilterDRMDataSupplier::SetEstimatedArrivalTime( TInt aXOmaHeaderVal )

    {

    // get the data part

    ContentAccess::CManager* manager = NULL;

    ContentAccess::TAgent agent;

    TRequestStatus status;

    TInt r = KErrNone;

    DRMCommon::TContentProtection protection;

    HBufC8* MIMEType = NULL;

    HBufC8* contentURI = NULL;

    HBufC8* xomaData = NULL;

    TUint dataLength;

    TPtrC8 dataPart;

    DRMCommon* drmCommon = NULL;

        TRAP(r, drmCommon = DRMCommon::NewL());

    if ( r )

        {

        return;

        }

    r = drmCommon->Connect();

    if ( r )

        {

        delete drmCommon;

        return;

        }

    iPHData->GetNextDataPart( dataPart );

    //in case the chunk is too short engine would panic

    if ( dataPart.Length() < KMinContentSizeToGetTheURI )

        return;

        // Find the caf agent and create manager

        TRAP( r, manager = GetCafDataL( agent ));

    // if an error occurs, return

    if ( r )

        {

        delete drmCommon;

        return;

        }

    // Get the content info, if it fails dont do anything

    if ( drmCommon->GetContentInfo( dataPart, protection, MIMEType,

        contentURI, dataLength ) == DRMCommon::EOk && protection

        != DRMCommon::ENoDCFFile )

        {

        // Create a buffer large enough for the time and uri

        xomaData = HBufC8::NewMax( sizeof(TInt) + contentURI->Size() );

        // if the creation fails free memory and return

        if ( !xomaData )

            {

            delete MIMEType;

            delete contentURI;

            delete manager;

            delete drmCommon;

            return;

            }

        // Copy the value of the xoma header:

        Mem::Copy( const_cast<TUint8*> ( xomaData->Ptr() ), &aXOmaHeaderVal,

            sizeof(TInt) );

        // Copy the value of the uri:

        Mem::Copy( const_cast<TUint8*> ( xomaData->Ptr() ) + sizeof(TInt),

            contentURI->Ptr(), contentURI->Size() );