sl@0: // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // concrete file finders for MIME type recognizers
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include "APMFNDR.H"
sl@0: 
sl@0: #include <e32uid.h>
sl@0: #include "APMPAN.H"
sl@0: 
sl@0: #ifdef USING_ECOM_RECOGS
sl@0: #include <ecom/ecom.h>
sl@0: #endif
sl@0: 
sl@0: const TInt KRecognizerDllGranularity=2;
sl@0: 
sl@0: #ifdef USING_ECOM_RECOGS
sl@0: const TUid KUidDataRecogInterFaceUid = {0x101F7D87};
sl@0: #endif
sl@0: 
sl@0: //
sl@0: // class TRecognizer
sl@0: //
sl@0: 
sl@0: CApaScanningDataRecognizer::TRecognizer::TRecognizer(HBufC* aName)
sl@0: 	{
sl@0: 	iName=aName;
sl@0: 	}
sl@0: 	
sl@0: //
sl@0: // class CApaRecognizerDll
sl@0: //
sl@0: 
sl@0: CApaRecognizerDll::~CApaRecognizerDll()
sl@0: 	{
sl@0: 	delete iId.iName;
sl@0: 	iLibrary.Close();
sl@0: 	delete iNext;
sl@0: 	}
sl@0: 
sl@0: CApaRecognizerDll::CApaRecognizerDll(HBufC* aName) 
sl@0: 	: iId(aName)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: #ifdef USING_ECOM_RECOGS
sl@0: // Used for cleanup support of locally declared arrays
sl@0: void CleanUpEComInfoArray(TAny* aInfoArray)
sl@0: 	{
sl@0: 	RImplInfoPtrArray* infoArray = (static_cast<RImplInfoPtrArray*>(aInfoArray));
sl@0: 	infoArray->ResetAndDestroy();
sl@0: 	infoArray->Close();
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: // class CApaBackupOperationObserver
sl@0: CApaScanningDataRecognizer::CApaBackupOperationObserver::CApaBackupOperationObserver(CApaScanningDataRecognizer& aRecognizer)
sl@0: 	: iRecognizer(aRecognizer)
sl@0: 	{
sl@0: 	TRAP_IGNORE(iSession = CBaBackupSessionWrapper::NewL());
sl@0: 	}
sl@0: 
sl@0: CApaScanningDataRecognizer::CApaBackupOperationObserver::~CApaBackupOperationObserver()
sl@0: 	{
sl@0: 	if( iSession )
sl@0: 		{
sl@0: 		iSession->DeRegisterBackupOperationObserver(*this);
sl@0: 		delete iSession;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CApaScanningDataRecognizer::CApaBackupOperationObserver::RegisterObserverL()
sl@0: 	{
sl@0: 	if(iSession)
sl@0: 		{
sl@0: 		iSession->RegisterBackupOperationObserverL(*this);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CApaScanningDataRecognizer::CApaBackupOperationObserver::HandleBackupOperationEventL(const TBackupOperationAttributes& aBackupOperationAttributes)
sl@0: 	{
sl@0: 	if (!iRecognizer.iExtra->iRecognizersLoaded)
sl@0: 		{
sl@0: 		// Then the recognizers have been unloaded, so there's nothing to do
sl@0: 		return;
sl@0: 		}
sl@0: 
sl@0: 	if ((aBackupOperationAttributes.iFileFlag == MBackupObserver::EReleaseLockReadOnly ||
sl@0: 		aBackupOperationAttributes.iFileFlag == MBackupObserver::EReleaseLockNoAccess)
sl@0: 		&& aBackupOperationAttributes.iOperation == EStart)
sl@0: 		{
sl@0: 		// release recognisers not in rom
sl@0: 		TInt count = iRecognizer.RecognizerCount();
sl@0: 		for (TInt i=count-1; i>=0; i--)
sl@0: 			{
sl@0: 				CApaRecognizerDll* lib=iRecognizer.iRecognizerLib[i];
sl@0: 				TDriveUnit drive(lib->iId.iDrive);
sl@0: 				TChar driveName=drive.Name()[0];
sl@0: 				if(driveName != TChar('Z'))
sl@0: 					{
sl@0: 					iRecognizer.RemoveRecognizer(lib); // ignore any errors
sl@0: 					}
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	if (aBackupOperationAttributes.iFileFlag == MBackupObserver::ETakeLock &&
sl@0: 		(aBackupOperationAttributes.iOperation == EEnd ||
sl@0: 		aBackupOperationAttributes.iOperation == EAbort))
sl@0: 		{
sl@0: 		iRecognizer.ScanForRecognizersL();
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: TInt CApaScanningDataRecognizer::CApaBackupOperationObserver::UpdateCounter() const
sl@0: 	{
sl@0: 	return iUpdateCounter;
sl@0: 	}
sl@0: 
sl@0: void CApaScanningDataRecognizer::CApaBackupOperationObserver::SetUpdateCounter(TInt aValue)
sl@0: 	{
sl@0: 	iUpdateCounter = aValue;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: //
sl@0: // class CApaScanningDataRecognizer
sl@0: // 
sl@0: 
sl@0: EXPORT_C CApaScanningDataRecognizer* CApaScanningDataRecognizer::NewL(RFs& aFs)
sl@0: 	{
sl@0: 	return NewL(aFs,ETrue);
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: @internalTechnology
sl@0: */
sl@0: EXPORT_C CApaScanningDataRecognizer* CApaScanningDataRecognizer::NewL(RFs& aFs, TBool aLoadDataRecognizers)
sl@0: 	{
sl@0: 	CApaScanningDataRecognizer* self=new(ELeave) CApaScanningDataRecognizer(aFs);
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL(aLoadDataRecognizers);
sl@0: 	CleanupStack::Pop(); // self
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C CApaScanningDataRecognizer::~CApaScanningDataRecognizer()
sl@0: 	{
sl@0: 	UnloadRecognizers();
sl@0: 	delete iExtra->iObserver;
sl@0: 	delete iExtra;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CApaScanningDataRecognizer::ScanForRecognizersL()
sl@0: 	{
sl@0: 	// set all recognizers to not present - pending rediscovery
sl@0: 	TInt count=iRecognizerLib.Count();
sl@0: 	TInt i;
sl@0: 	for (i=0; i<count; i++)
sl@0: 		iRecognizerLib[i]->iPresent=CApaRecognizerDll::ENotPresent;
sl@0: 
sl@0: 	ScanForEcomRecognizersL();
sl@0: 	//
sl@0: 	// remove any recognizers that are no longer present
sl@0: 	for (TInt ii=iRecognizerLib.Count()-1;ii>=0;ii--)
sl@0: 		{
sl@0: 		CApaRecognizerDll* lib=iRecognizerLib[ii];
sl@0: 		if (lib->iPresent==CApaRecognizerDll::ENotPresent)
sl@0: 			{
sl@0: 			RemoveRecognizer(lib); // ignore any errors
sl@0: 			}
sl@0: 		}
sl@0: 	iMaxBufferSize = -1; // Recognizers were re-loaded so need to recalculate the maximum buffer size
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CApaScanningDataRecognizer::RecognizerCount()
sl@0: 	{
sl@0: 	return iRecognizerLib.Count();
sl@0: 	}
sl@0: 
sl@0: EXPORT_C CApaScanningDataRecognizer::CRecognizerArray* CApaScanningDataRecognizer::RecognizerListLC()const
sl@0: 	{
sl@0: 	CRecognizerArray* list=new(ELeave) CArrayFixFlat<TRecognizer>(2);
sl@0: 	CleanupStack::PushL(list);
sl@0: 	TInt count=iRecognizerLib.Count();
sl@0: 	for (TInt i=0; i<count; i++)
sl@0: 		list->AppendL(iRecognizerLib[i]->iId);
sl@0: 	return list;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C const CApaScanningDataRecognizer::TRecognizer& CApaScanningDataRecognizer::operator[](TInt aIndex)const
sl@0: 	{
sl@0: 	return iRecognizerLib[aIndex]->iId;	
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CApaScanningDataRecognizer::UpdateCounter()const
sl@0: 	{
sl@0: 	return iExtra->iObserver->UpdateCounter();
sl@0: 	}
sl@0: 
sl@0: 
sl@0: EXPORT_C CApaScanningDataRecognizer::CApaScanningDataRecognizer(RFs& aFs)
sl@0: 	:CApaDataRecognizer(aFs),
sl@0: 	iRecognizerLib(KRecognizerDllGranularity)
sl@0: 	{
sl@0: 	__DECLARE_NAME(_S("CApaScanningDataRecognizer"));
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CApaScanningDataRecognizer::ConstructL()
sl@0: 	{
sl@0: 	ConstructL(ETrue);
sl@0: 	}
sl@0: 
sl@0: void CApaScanningDataRecognizer::ConstructL(TBool aLoadDataRecognizers)
sl@0: 	{
sl@0: 	iExtra = new (ELeave) CApaScanningDataRecognizerExtra();
sl@0: 	iExtra->iObserver = new (ELeave) CApaBackupOperationObserver( *this );
sl@0: 	iExtra->iObserver->RegisterObserverL();
sl@0: 	if(aLoadDataRecognizers)
sl@0: 		{
sl@0: 		LoadRecognizersL();
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CApaScanningDataRecognizer::SetEcomRecognizersFromListL(const CRecognizerArray& aList)
sl@0: 	{
sl@0: 	//for ecom style
sl@0: 	for (TInt i=0 ; i<aList.Count() ; i++)
sl@0: 		{
sl@0: 		TDriveUnit drive(aList[i].iDrive);
sl@0: 		TRAPD(ret, LoadEcomRecognizerL(drive,aList[i].iUid));
sl@0: 		if (ret==KErrNoMemory)
sl@0: 			{
sl@0: 			User::Leave(ret); 
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CApaScanningDataRecognizer::SetEcomRecognizerL(const TRecognizer& aRecognizer)
sl@0: 	{
sl@0: 	//for ecom style 
sl@0: 	TDriveUnit drive(aRecognizer.iDrive);
sl@0: 	LoadEcomRecognizerL(drive,aRecognizer.iUid);
sl@0: 	}
sl@0: 
sl@0: TInt CApaScanningDataRecognizer::RemoveRecognizer(CApaRecognizerDll* aDll)
sl@0: 	{
sl@0: 	__ASSERT_DEBUG(iRecognizerLib.Count()>0,User::Invariant());
sl@0: 	// try to remove the recognizer from the list
sl@0: 	TInt ret=RemoveDataRecognizerType(aDll->iRec);
sl@0: 	if (ret!=KErrNone && ret!=KErrNotFound)
sl@0: 		return ret;
sl@0: 	//
sl@0: 	// get a handle to the previous entry in the list
sl@0: 	TInt count=iRecognizerLib.Count();
sl@0: 	TInt i;
sl@0: 	for (i=0; i<count; i++)
sl@0: 		{
sl@0: 		if (iRecognizerLib[i]==aDll)
sl@0: 			break;
sl@0: 		}
sl@0: 	__ASSERT_ALWAYS(i<count,Panic(EPanicLibraryNotInList));
sl@0: 	
sl@0: 	// remove the dll
sl@0: 	delete iRecognizerLib[i];
sl@0: 	iRecognizerLib.Remove(i);
sl@0: 	iRecognizerLib.Compress();
sl@0: 	if(iExtra->iObserver)
sl@0: 		iExtra->iObserver->SetUpdateCounter(iExtra->iObserver->UpdateCounter() +1);
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: #ifdef USING_ECOM_RECOGS
sl@0: 
sl@0: //load the ecom style data recognizer
sl@0: void CApaScanningDataRecognizer::LoadEcomRecognizerL(TDriveUnit& aDrive,TUid aUid)
sl@0: 	{
sl@0: 	//Get implementation information of the recognizer with UID aUid
sl@0: 	RImplInfoPtrArray implementationInfoArray;
sl@0: 	TCleanupItem cleanup(CleanUpEComInfoArray, &implementationInfoArray);
sl@0: 	CleanupStack::PushL(cleanup);
sl@0: 	REComSession::ListImplementationsL(KUidDataRecogInterFaceUid,implementationInfoArray);
sl@0: 	const TInt availCount = implementationInfoArray.Count();
sl@0: 	CImplementationInformation* info=NULL;
sl@0: 	TInt ii;
sl@0: 	for (ii=0;ii<availCount;++ii)
sl@0: 		{
sl@0: 		info = implementationInfoArray[ii];
sl@0: 		TUid uid = info->ImplementationUid();
sl@0: 		
sl@0: 		if(uid.iUid == aUid.iUid )
sl@0: 			{
sl@0: 			break;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	//If the implementation not found just return
sl@0: 	if(ii==availCount)
sl@0: 		{
sl@0: 		CleanupStack::PopAndDestroy(&implementationInfoArray);		
sl@0: 		return;
sl@0: 		}
sl@0: 	
sl@0: 	//Get the version of implementation
sl@0: 	TInt version=info->Version();
sl@0: 	
sl@0: 	// check we haven't loaded this one already
sl@0: 	TInt count=iRecognizerLib.Count();
sl@0: 	TInt i;
sl@0: 	CApaRecognizerDll* lib=NULL; // the previous one in the list
sl@0: 	for (i=0; i<count; i++)
sl@0: 		{
sl@0: 		lib=iRecognizerLib[i];
sl@0: 		if (lib->iId.iUid==aUid)
sl@0: 			{// we may have to override one
sl@0: 			if (lib->iPresent!=CApaRecognizerDll::ENotPresent)
sl@0: 				{
sl@0: 				CleanupStack::PopAndDestroy(&implementationInfoArray);				
sl@0: 				return; // already found
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				if (lib->iVersion < version)
sl@0: 					{
sl@0: 					//Upgrade a plugin if a plugin with higher version than loaded plugin is installed.  
sl@0: 					lib->iPresent = CApaRecognizerDll::ESuperseded;
sl@0: 					break;
sl@0: 					}
sl@0: 				else
sl@0: 					{
sl@0: 					CleanupStack::PopAndDestroy(&implementationInfoArray);					
sl@0: 					lib->iPresent = CApaRecognizerDll::EIsPresent;
sl@0: 					return;
sl@0: 					}
sl@0: 				}
sl@0: 			}			
sl@0: 		}
sl@0: 	//Remove the old version and let it continue to load new version
sl@0: 	if ((i<count)&&(lib->iPresent==CApaRecognizerDll::ESuperseded))
sl@0: 		{
sl@0: 		RemoveRecognizer(lib);
sl@0: 		}
sl@0: 
sl@0: 	// load the library
sl@0: 	HBufC* recogName=info->DisplayName().AllocL();
sl@0: 	CleanupStack::PushL(recogName);
sl@0: 	lib=NULL;
sl@0: 	lib = new(ELeave) CApaRecognizerDll(recogName);
sl@0: 	CleanupStack::Pop(recogName);
sl@0: 	CleanupStack::PushL(lib);
sl@0: 	TRAPD(error,lib->iRec = CApaDataRecognizerType::CreateDataRecognizerL(aUid));
sl@0: 	if(!error && lib->iRec)
sl@0: 		{
sl@0: 		lib->iPresent = CApaRecognizerDll::EIsPresent;
sl@0: 		AddDataRecognizerTypeL(lib->iRec);
sl@0: 		lib->iId.iUid = aUid;
sl@0: 		lib->iId.iDrive = aDrive;
sl@0: 		lib->iVersion=version;
sl@0: 		iExtra->iObserver->SetUpdateCounter(iExtra->iObserver->UpdateCounter() + 1);
sl@0: 		//
sl@0: 		// add lib to the library list
sl@0: 		iRecognizerLib.AppendL(lib);
sl@0: 		CleanupStack::Pop(lib); // lib
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		CleanupStack::PopAndDestroy(lib); // lib
sl@0: 		}
sl@0: 	CleanupStack::PopAndDestroy(&implementationInfoArray);	
sl@0: 	}
sl@0: #else
sl@0: void CApaScanningDataRecognizer::LoadEcomRecognizerL(TDriveUnit&,TUid)
sl@0: 	{
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: void CApaScanningDataRecognizer::ScanForEcomRecognizersL()
sl@0: 	{
sl@0: #ifdef USING_ECOM_RECOGS
sl@0: 	//scan ecom plugin
sl@0: 	RImplInfoPtrArray implementationArray;
sl@0: 	TCleanupItem cleanup(CleanUpEComInfoArray, &implementationArray);
sl@0: 	CleanupStack::PushL(cleanup);
sl@0: 	REComSession::ListImplementationsL(KUidDataRecogInterFaceUid,implementationArray);
sl@0: 	const TInt availCount = implementationArray.Count();
sl@0: 	for (TInt count=0;count<availCount;++count)
sl@0: 		{
sl@0: 		const CImplementationInformation* info = implementationArray[count];
sl@0: 		TUid uid = info->ImplementationUid();
sl@0: 		TDriveUnit drive=info-> Drive();
sl@0: 		TRAP_IGNORE(LoadEcomRecognizerL(drive,uid));
sl@0: 		}
sl@0: 	CleanupStack::PopAndDestroy(&implementationArray);
sl@0: #endif
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: @internalTechnology
sl@0: */
sl@0: EXPORT_C void CApaScanningDataRecognizer::LoadRecognizersL()
sl@0: 	{
sl@0: 	iExtra->iRecognizersLoaded = ETrue;
sl@0: 	ScanForRecognizersL();
sl@0: 	UpdateDataTypesL();
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: @internalTechnology
sl@0: */
sl@0: EXPORT_C void CApaScanningDataRecognizer::UnloadRecognizers()
sl@0: 	{	
sl@0: 	iExtra->iRecognizersLoaded = EFalse;
sl@0: 	DestroyRecognizerList();
sl@0: 	iRecognizerLib.ResetAndDestroy();
sl@0: 	}
sl@0: