/*

* 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 the License "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:  Supports download related utility functions

*

*/

// INCLUDE FILES

#include    "CDownloadUtils.h" 

#include    "UiLibLogger.h"

#include    <DocumentHandler.h>

#include    <Oma2Agent.h>

#include    <DRMCommon.h>

#include	<apgcli.h>

#include    <caf/caf.h>

#include    <utf.h>

// LOCAL CONSTANTS AND MACROS

#ifdef BRDO_WML_DISABLED_FF

_LIT8( KWmlType1, "text/vnd.wap.wml");

_LIT8( KWmlType2, "text/vnd.wap.wmlc");

_LIT8( KWmlType3, "application/vnd.wap.wmlscriptc");

_LIT8( KWmlType4, "application/vnd.wap.wmlc");

#endif 

_LIT8(KAudio, "audio/");

_LIT8(KVideo, "video/");

_LIT8(KImage, "image/");

_LIT8(KFlash, "application/x-shockwave-flash");

_LIT8(Ksdp, "application/sdp");

_LIT8(Krng, "application/vnd.nokia.ringing-tone");

_LIT8(Krn, "application/vnd.rn-realmedia");

_LIT8(Kpn, "application/x-pn-realmedia");

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

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

// CDownloadUtils::CDownloadUtils

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

//

CDownloadUtils::CDownloadUtils() 

    {

    }

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

// CDownloadUtils::ConstructL

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

//

void CDownloadUtils::ConstructL()

    {

    CLOG_ENTERFN("CDownloadUtils::ConstructL()");

    }

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

// CDownloadUtils::NewL

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

//

CDownloadUtils* CDownloadUtils::NewL()

    {

    CDownloadUtils* self = new ( ELeave ) CDownloadUtils();

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop();

    return self;

    }

// Destructor

CDownloadUtils::~CDownloadUtils()

    {

    delete iMimeType;

    CLOG_WRITE(" iMimeType OK");

    delete iContentURI;

    CLOG_WRITE(" iContentURI OK");

    }

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

// CDownloadUtils::DrmDownloadL

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

//

TBool CDownloadUtils::DrmDownloadL( RHttpDownload& aDownload )

    {

    CLOG_ENTERFN("CDownloadUtils::DrmDownloadL");

    TBool isDrmDownload( EFalse );

    HBufC8* contentType = HBufC8::NewLC( KMaxContentTypeLength );

    TPtr8 temp( contentType->Des() );

    User::LeaveIfError( aDownload.GetStringAttribute( EDlAttrContentType, temp ) );

    CLOG_WRITE(" EDlAttrContentType got");

    if( !contentType->Compare(KOma1DrmMessageContentType) ||

        !contentType->Compare(KOma1DcfContentType) ||

        !contentType->Compare(KOma2DcfContentType) )

        {

        isDrmDownload = ETrue;

        }

    CleanupStack::PopAndDestroy( contentType );

    CLOG_WRITE_FORMAT(" ret: %d",isDrmDownload);

    CLOG_LEAVEFN("CDownloadUtils::DrmDownloadL");

    return isDrmDownload;

    }

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

// CDownloadUtils::DrmRightsOnThePhoneL

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

//

TBool CDownloadUtils::DrmRightsOnThePhoneL

    ( RHttpDownload& aDownload, TBool& aPreviewRights ) const

    {

    CLOG_ENTERFN("CDownloadUtils::DrmRightsOnThePhoneL");

    TBool drmRightsOnThePhone( EFalse );

    DRMCommon* drmCommon = DRMCommon::NewL();

    CLOG_WRITE(" DRMCommon::NewL OK");

    CleanupStack::PushL( drmCommon );

    User::LeaveIfError( drmCommon->Connect() );

    CLOG_WRITE(" Connect OK");

    HBufC* fileName = HBufC::NewLC( KMaxPath );

    TPtr fileNamePtr = fileName->Des();

    User::LeaveIfError

        ( aDownload.GetStringAttribute( EDlAttrDestFilename, fileNamePtr ) );

    CLOG_WRITE_FORMAT(" EDlAttrDestFilename: %S",&fileNamePtr);

    RPointerArray<CDRMRights>* rightsList(0);

    drmCommon->GetDetailedFileRights( *fileName, rightsList ); // Return val. ignored.

    // We are interested in if there is at least one right:

    if ( rightsList )

        {

        // BEGIN LEAVE safety: No LEAVE allowed!

        TInt rightsCnt = rightsList->Count();

        CLOG_WRITE_FORMAT(" rightsCnt: %d",rightsCnt);

        for ( TInt i=0; i<rightsCnt; ++i )

            {

            // Check: at least one right must be valid

            CDRMRights* r = (*rightsList)[i];

            TUint32 constraintSpec( 0 );

            CDRMRights::TRestriction restriction;

            CDRMRights::TExpiration expiration;

            TUint32 constType;

            TInt infoPri = r->GetRightsInfo( constraintSpec, restriction, expiration, constType );

            CLOG_WRITE_FORMAT(" infoPri: %d",infoPri);

            if ( infoPri != CDRMRights::ENoRights )

                {

                // Right must be valid

                if ( expiration == CDRMRights::EValidRights )

                    {

                    drmRightsOnThePhone = ETrue;

                    // Set output parameter

                    aPreviewRights = ( restriction == CDRMRights::EPreviewRights );

                    // We found the first, we are not interested in others

                    break;

                    }

                }

            }

        // END LEAVE safety: No LEAVE allowed!

        rightsList->Close();

        delete rightsList;

        rightsList = 0;

        }

    CleanupStack::PopAndDestroy( fileName );

    CleanupStack::PopAndDestroy( drmCommon );

    CLOG_WRITE_FORMAT(" ret: %d",drmRightsOnThePhone);

    CLOG_WRITE_FORMAT(" aPreviewRights: %d",aPreviewRights);

    CLOG_LEAVEFN("CDownloadUtils::DrmRightsOnThePhoneL");

    return drmRightsOnThePhone;

    }

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

// CDownloadUtils::IsContentTypeSupportedL

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

//

TBool CDownloadUtils::IsContentTypeSupportedL( RHttpDownload& aDownload )

    {

    TBool supported = EFalse;

    HBufC8* contentType = ContentTypeL( aDownload, ETrue );

    CleanupStack::PushL( contentType );

    // if we get content-type that appears to be SIS (not SISx) type, may be due to

    // misconfigured server: change content-type to octet-stream to allow

    // app installer to make decision if supported or not

    if( contentType->Find( KSisFileMimeType ) != KErrNotFound )

        {

        contentType->Des().Copy( KOctetStreamMimeType );

        }

    supported = IsContentTypeSupportedL( aDownload, *contentType );

    CleanupStack::PopAndDestroy( contentType );

    return supported;

    }

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

// CDownloadUtils::IsContentTypeSupportedL

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

//

TBool CDownloadUtils::IsContentTypeSupportedL( const TDesC8& aContentType )

    {

    if ( aContentType.Length() == 0 )

        {

        return EFalse;

        }

#ifdef BRDO_WML_DISABLED_FF

    else if ( !aContentType.Compare( KWmlType1() ) || !aContentType.Compare( KWmlType2() )

           || aContentType.Compare( KWmlType3() ) || !aContentType.Compare( KWmlType4() ) )

        {

    	return EFalse; 

        }

#endif 

    else

        {

        TBool canOpen( EFalse );

        CDocumentHandler* docHandler = CDocumentHandler::NewLC();

        TRAPD( err, canOpen = docHandler->CanOpenL( TDataType( aContentType ) ) );

        CleanupStack::PopAndDestroy( docHandler ); // docHandler

        if ( !(aContentType.Compare(KOma2RoContentType)) || !(aContentType.Compare(KOma2ProtectedRoType))

            {

            canOpen = EFalse;

            }

        if ( err != KErrNone ) 

            {

            if ( err == KMimeNotSupported ) 

                {

                canOpen = EFalse; 

                }

            else 

                {

                User::Leave( err ); 

                }

            }

        return canOpen;

        }

    }

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

// CDownloadUtils::IsContentTypeSupportedL

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

//

TBool CDownloadUtils::IsContentTypeSupportedL( RHttpDownload& aDownload, const TDesC8& aContentType )

    {

    if ( aContentType.Length() == 0 )

        {

        return EFalse;

        }

#ifdef BRDO_WML_DISABLED_FF

    else if ( !aContentType.Compare(KWmlType1()) || !aContentType.Compare(KWmlType2())

           || !aContentType.Compare(KWmlType3()) || !aContentType.Compare(KWmlType4()) )

        {

    	return EFalse; 

        }

#endif         

    else

        {

        TBool canOpen( EFalse );

        CDocumentHandler* docHandler = CDocumentHandler::NewLC();

        TRAPD( err, canOpen = docHandler->CanOpenL( TDataType( aContentType ) ) );

        if ( err == KMimeNotSupported )

            {

			      TUint8* contentTypeString = NULL;

			      FindContentTypeFromFileL(aDownload, contentTypeString);

			      if (contentTypeString != NULL)

				        {

                TRAPD( err1, canOpen = docHandler->CanOpenL( TDataType( TPtrC8(contentTypeString) ) ) );

				        if ( err1 == KMimeNotSupported )

                    {

					          canOpen = EFalse;

                    delete contentTypeString;

					          }

				        else if (err1 == KErrNone)

                    {

                    // Setting Download Content type to a recognized one

                    aDownload.SetStringAttribute( EDlAttrContentType, TPtrC8(contentTypeString) );

                    delete contentTypeString;

					          canOpen = ETrue;

					          }

				       else

					         {

                   delete contentTypeString;

					         User::Leave( err );

					          }

				       }

            }

        else

            {

            if (err != KErrNone )

                {

                User::Leave( err ); 

                }

            }

		    CleanupStack::PopAndDestroy(docHandler ); // docHandler

        return canOpen;

        }

    }

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

// CDownloadUtils::ContentTypeL

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

//

HBufC8* CDownloadUtils::ContentTypeL

    ( RHttpDownload& aDownload, TBool aDrmResolve, TInt mediaObjectIndex )

    {

    CLOG_ENTERFN("CDownloadUtils::ContentTypeL");

    HBufC8* retContentType = NULL;

    TInt32 numMediaObjects = 0;

    User::LeaveIfError( aDownload.GetIntAttribute( EDlAttrNumMediaObjects, numMediaObjects ) );

     if ( aDrmResolve && DrmDownloadL( aDownload ) )

        {

        HBufC* fileName = HBufC::NewLC( KMaxPath );

        TPtr fileNamePtr = fileName->Des();

        // Check if this is album

        if ((numMediaObjects > KFirstMoIndex) && mediaObjectIndex)

            {

            User::LeaveIfError

                ( aDownload.GetStringAttribute( EDlAttrDestFilename, mediaObjectIndex, fileNamePtr ) );

            }

           else

            {

            User::LeaveIfError

                ( aDownload.GetStringAttribute( EDlAttrDestFilename, fileNamePtr ) );

            }

        CLOG_WRITE_FORMAT(" EDlAttrDestFilename: %S",&fileNamePtr);

		if(fileNamePtr.Compare(KNullDesC))

            {

		    using namespace ContentAccess;

		    CContent* content(NULL);

		    TRAPD( err, content = CContent::NewL(fileNamePtr,EContentShareReadWrite) );

            CleanupStack::PushL(content);

            /*

            If file not present CContent::NewL() leaves with KErrNotFound.

            Need to ignore this error because in case of DRM paused downloads the partial downloaded file will be deleted.

            */

		    if(err != KErrNotFound)

    		    {

                User::LeaveIfError( err );

				HBufC* mimeType = HBufC::NewL(256);

                TPtr ptr = mimeType->Des();

				TInt fileInfoErr = content->GetStringAttribute(EMimeType,ptr);

				TBuf8<256> buf8;

				CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8,ptr);

				iMimeType = buf8.Alloc();

				if ( !fileInfoErr )

					{

					retContentType = iMimeType;

					iMimeType = NULL;

					}

				// Free temp storage

				delete iMimeType;

				iMimeType = NULL;

				delete iContentURI;

				iContentURI = NULL;

    		    }

            CleanupStack::PopAndDestroy(content);

		    }

		CleanupStack::PopAndDestroy( fileName );    

        }        

    // If it's not DRM or it is, but the content type could not been got

    if ( retContentType == NULL )

        {

        HBufC8* contentType = HBufC8::NewLC( KMaxContentTypeLength );

        TPtr8 temp( contentType->Des() );

        TInt err = 0;

        // Check if this is album

        if ((numMediaObjects > KFirstMoIndex) && mediaObjectIndex)

            {

            err = aDownload.GetStringAttribute( EDlAttrContentType, mediaObjectIndex, temp );

            }

        else

            {

            err = aDownload.GetStringAttribute( EDlAttrContentType, temp );

            }

        CLOG_WRITE_FORMAT(" err: %d",err);

        if ( err != KErrNone && err != KErrNotFound )

            {

            User::LeaveIfError( err );

            }

        if ( err == KErrNotFound )

            {

            contentType->Des().Copy( KNullDesC );

            }

        CleanupStack::Pop( contentType );

        retContentType = contentType;

        contentType = NULL;

        }

    CLOG_LEAVEFN("CDownloadUtils::ContentTypeL");

    return retContentType;

    }

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

// CDownloadUtils::FindContentTypeFromFileL

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

//

void CDownloadUtils::FindContentTypeFromFileL( RHttpDownload& aDownload, TUint8*& aContentTypeString)

{

    TDataRecognitionResult dataType;

    RApaLsSession apaSession;

    TInt ret;

    User::LeaveIfError(apaSession.Connect());

    // Create a buffer to hold data from the file

	  TInt bufferSize = 0;

    TInt seekPosition = 0;

	  apaSession.GetMaxDataBufSize(bufferSize);

	  HBufC8* buffer = HBufC8::NewLC(bufferSize);

	  TPtr8 buf = buffer->Des();

	  RFile file;

    HBufC* fileName = HBufC::NewLC( KMaxPath );

    TPtr fileNamePtr = fileName->Des();

    User::LeaveIfError

        ( aDownload.GetStringAttribute( EDlAttrDestFilename, fileNamePtr ) );

    RFs fs;

    User::LeaveIfError( fs.Connect() );

    CleanupClosePushL( fs );

    User::LeaveIfError( file.Open( fs, fileNamePtr, 

										EFileShareAny |

										EFileRead ) );

	  // Find current file pointer position

    file.Seek(ESeekStart, seekPosition);

	  // Read from file

	  file.Read(buf);

	  // return file pointer to original position

    file.Seek(ESeekStart, seekPosition);

    // Ask the application architecture to find the file type

    ret = apaSession.RecognizeData(fileNamePtr, buf, dataType);

    apaSession.Close();

	  CleanupStack::PopAndDestroy(3); //fs, fileName, buffer

    if (ret == KErrNone &&

        (dataType.iConfidence == CApaDataRecognizerType::ECertain) ||

        {

        // If the file type was found, try to match it to a known file type

        TPtrC8 mimeTypePtr = dataType.iDataType.Des8();

        TInt len = mimeTypePtr.Length() + 1;

        aContentTypeString = new(ELeave) TUint8 [len];

        TPtr8 contentTypeStringPtr(aContentTypeString, len);

        contentTypeStringPtr.Copy(mimeTypePtr);

        contentTypeStringPtr.ZeroTerminate();

        return;

        }

}

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

// CDownloadUtils::IsGallerySupported

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

//

TBool  CDownloadUtils::IsGallerySupported(const TDesC8& aContentType)

{

	TBool found (aContentType.Find(KAudio)==0 || aContentType.Find(KVideo)==0 || aContentType.Find(KImage)==0 || aContentType.Find(KFlash)==0 ||

	            aContentType.Find(Ksdp)==0 || aContentType.Find(Krng)==0 || aContentType.Find(Krn)==0 || aContentType.Find(Kpn)==0);

	return found;

}