/*

* Copyright (c) 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:

*

*/

// USER INCLUDE

#include "blacklistclient.h"

#include "blacklistcommon.h"

#include "mdcserializationbuffer.h"

#include "blacklistitem.h"

#include "harvesterlog.h"

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

// RBlacklistClient::RBlacklistClient()

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

//

EXPORT_C RBlacklistClient::RBlacklistClient() : RSessionBase (),

    iSessionOk( EFalse )

    {

    }

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

// RBlacklistClient::~RBlacklistClient()

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

//

EXPORT_C RBlacklistClient::~RBlacklistClient()

    {

    WRITELOG( "RBlacklistClient::~RBlacklistClient - begin" );

    RSessionBase::Close(); 

    iBlacklistMemoryTable.ResetAndDestroy();

    iBlacklistMemoryTable.Close();

	iBlacklistChunk.Close();

	iFs.Close();

    WRITELOG( "RBlacklistClient::~RBlacklistClient - end" );

    }

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

// RBlacklistClient::Connect()

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

//

EXPORT_C TInt RBlacklistClient::Connect()

    {

    WRITELOG( "RBlacklistClient::Connect - begin" );

    iSessionOk = EFalse;

    TInt error = iFs.Connect();

    if( error != KErrNone )

        {

        return error;

        }

    error = StartServer();

    if ( error == KErrNone || error == KErrAlreadyExists )

        {

        WRITELOG( "RBlacklistClient::Connect() - creating session" );

        error = CreateSession( KBlacklistServerName, Version() );

        }

    if( error == KErrNone )

        {

        iSessionOk = ETrue;

        }

    else

        {

        iFs.Close();

        }

    WRITELOG( "RBlacklistClient::Connect - end" );

    return error;

    }

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

// RBlacklistClient::Version()

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

//

TVersion RBlacklistClient::Version() const

    {

    WRITELOG( "RBlacklistClient::Version - begin" );

    return TVersion( KBlacklistServerMajorVersion, KBlacklistServerMinorVersion,

    	KBlacklistServerBuildVersion );

    }

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

// RBlacklistClient::StartServer()

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

//

TInt RBlacklistClient::StartServer()

    {

    WRITELOG( "RBlacklistClient::StartServer - begin" );

    RProcess server;

    TInt error = server.Create( KBlacklistServerExe, KNullDesC );

    if( error != KErrNone )

        {

        return error;

        }

    // start server and wait for signal before proceeding    

    TRequestStatus status;

    server.Rendezvous( status );

    if ( status.Int() != KRequestPending )

        {

        server.Kill( 0 );

        }

    else

        {

        server.Resume();

        }

    User::WaitForRequest( status );

    error = server.ExitType() == EExitPanic ? KErrCommsBreak : status.Int();

    server.Close();

    WRITELOG( "RBlacklistClient::StartServer - end" );

    return error;

    }

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

// RBlacklistClient::RemoveFromDBL()

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

//

void RBlacklistClient::RemoveFromDBL( const TDesC& aUri, TUint32 aMediaId ) const

    {

    WRITELOG( "RBlacklistClient::RemoveFromDBL - begin" );

    TPckgBuf<TUint32> mediaIdPckg( aMediaId );

    TIpcArgs ipcArgs;

    ipcArgs.Set( 1, &aUri );

    ipcArgs.Set( 2, &mediaIdPckg );

    const TInt err = SendReceive( EBlacklistRemoveFromDB, ipcArgs );

    User::LeaveIfError( err );

    WRITELOG( "RBlacklistClient::RemoveFromDBL - end" );

    }

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

// RBlacklistClient::DoLoadBlacklistL()

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

//

void RBlacklistClient::DoLoadBlacklistL( TInt& aHandle ) const

    {

    WRITELOG( "RBlacklistClient::DoLoadBlacklistL - begin" );

    TPckgBuf<TInt> handleBuf;

    TIpcArgs ipcArgs;

    ipcArgs.Set( 1, &handleBuf );

    const TInt err = SendReceive( EGetBlacklistData, ipcArgs );

    User::LeaveIfError( err );

    aHandle = handleBuf();

    WRITELOG( "RBlacklistClient::DoLoadBlacklistL - end" );

    } 

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

// RBlacklistClient::LoadBlacklistL()

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

//

EXPORT_C void RBlacklistClient::LoadBlacklistL()

    {

    WRITELOG( "RBlacklistClient::LoadBlacklistL - begin" );

    if ( !iSessionOk )

        {

        return;

        }

    // delete old data

    if( iBlacklistMemoryTable.Count() > 0 )

        {

        iBlacklistMemoryTable.ResetAndDestroy();

        }

    // Get handle to data

    TInt handle( 0 );

    DoLoadBlacklistL( handle );

   	// create memory chunk

   	HBufC*  name = HBufC::NewLC( 32 );

	*name = KBlacklistChunkName;

	name->Des().AppendNum( handle );

	iBlacklistChunk.Close();

	User::LeaveIfError ( iBlacklistChunk.OpenGlobal( *name, ETrue ) );

	CMdCSerializationBuffer* buffer = CMdCSerializationBuffer::NewLC( iBlacklistChunk.Base(), iBlacklistChunk.Size() );

	if ( buffer->Size() == 0 )

	    {

	    User::Leave( KErrNotFound );

	    }

	// First get list count

	TUint32 listCount ( 0 );

	buffer->ReceiveL( listCount );

	TInt64 modified ( 0 );

	TUint32 mediaId ( 0 );

    HBufC* uri = NULL;

    for( TInt i = listCount - 1; i >=0; i-- )

        {

        // get modified and media id

	    buffer->ReceiveL( modified );

	    buffer->ReceiveL( mediaId );

        //Get uri

        uri = buffer->ReceiveDes16L();

       	CleanupStack::PushL( uri );

       	AddToMemoryTableL( modified, *uri, mediaId );

       	CleanupStack::PopAndDestroy( uri );

       	uri = NULL;

        }

	CleanupStack::PopAndDestroy( buffer );

	CleanupStack::PopAndDestroy( name );

    WRITELOG( "RBlacklistClient::LoadBlacklistL - end" );

    }

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

// RBlacklistClient::AddToMemoryTableL()

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

//

void RBlacklistClient::AddToMemoryTableL( const TInt64& aModified,

        const TDesC& aUri, const TUint32 aMediaId )

    {

    WRITELOG( "RBlacklistClient::AddToMemoryTableL - begin" );

    CBlacklistItem* item = CBlacklistItem::NewL( aModified, aUri, aMediaId );

    const TInt err = iBlacklistMemoryTable.Append( item ); // ownership is transferred

    if ( err != KErrNone )

        {

        delete item;

        }

    WRITELOG( "RBlacklistClient::AddToMemoryTableL - end" );

    }

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

// RBlacklistClient::RemoveFromMemoryTableL()

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

//

void RBlacklistClient::RemoveFromMemoryTableL( const TDesC& aUri, const TUint32 aMediaId )

    {

    WRITELOG( "RBlacklistClient::RemoveFromMemoryTableL - begin" );

    const TInt index = GetListIndex( aUri, aMediaId );

    if ( index >= 0 )

        {

        CBlacklistItem* item = iBlacklistMemoryTable[index];

        delete item;

        iBlacklistMemoryTable.Remove( index );

        }

    WRITELOG( "RBlacklistClient::RemoveFromMemoryTableL - end" );

    }

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

// RBlacklistClient::IsBlacklistedL()

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

//

EXPORT_C TBool RBlacklistClient::IsBlacklistedL( const TDesC& aUri, TUint32 aMediaId, TTime /*aLastModifiedTime*/ )

    {

    WRITELOG( "RBlacklistClient::IsBlacklistedL - begin" );

    if ( !iSessionOk )

        {

        return EFalse;

        }

    const TInt index = GetListIndex( aUri, aMediaId );

    if ( index >= 0 )

        {

        TEntry entry;

        const TInt errorcode = iFs.Entry( aUri, entry );

        if ( errorcode != KErrNone )

            {

            return EFalse;

            }

        TTime fileLastModified( 0 );

        fileLastModified = entry.iModified;

        TInt64 modified( 0 );

        modified = iBlacklistMemoryTable[index]->Modified();

        if( modified > 0 )

            {

            if ( modified == fileLastModified.Int64() )

                {

                WRITELOG( "RBlacklistClient::IsBlacklistedL - file is blacklisted, modification time is the same" );

                return ETrue;

                }

            else

                {

                // file might be different, so remove from blacklist

                // and act like it wasn't found

                RemoveFromMemoryTableL( aUri, aMediaId );

                // Remove from server DB

                RemoveFromDBL( aUri, aMediaId );

                }

            }

        else

            {

            WRITELOG( "RBlacklistClient::IsBlacklistedL - file is blacklisted, no modification time found" );

            return ETrue;

            }

        }

    WRITELOG( "RBlacklistClient::IsBlacklistedL - end" );

    return EFalse;

    }

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

// RBlacklistClient::GetListIndex()

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

//

TInt RBlacklistClient::GetListIndex( const TDesC& aUri, TUint32 aMediaId )

    {

    WRITELOG( "RBlacklistClient::GetListIndex - begin" );

    for ( TInt i( 0 ); i < iBlacklistMemoryTable.Count(); ++i )

        {

        if ( iBlacklistMemoryTable[i]->Compare( aUri, aMediaId ) )

            {

            return i;

            }

        }

    WRITELOG( "RBlacklistClient::GetListIndex - end" );

    return KErrNotFound;

    }

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

// RBlacklistClient::AddL()

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

//

EXPORT_C void RBlacklistClient::AddL( const TDesC& aUri, TUint32 aMediaId, TTime aLastModifiedTime ) const

    {

    WRITELOG( "RBlacklistClient::AddL - begin" );

    TPckgC<TUint32> mediaIdPckg( aMediaId );

    TPckgC<TTime> lastModifiedTimePckg( aLastModifiedTime );

	TIpcArgs ipcArgs;

    ipcArgs.Set( 0, &mediaIdPckg );

    ipcArgs.Set( 1, &aUri );

    ipcArgs.Set( 2, &lastModifiedTimePckg );

    const TInt err = SendReceive( EBlacklistAdd, ipcArgs );

    User::LeaveIfError( err );

    WRITELOG( "RBlacklistClient::AddL - end" );

    }

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

// RBlacklistClient::RemoveL()

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

//

EXPORT_C void RBlacklistClient::RemoveL( const TDesC& aUri, TUint32 aMediaId ) const

    {

    WRITELOG( "RBlacklistClient::RemoveL - begin" );

    TPckgBuf<TUint32> mediaIdPckg( aMediaId );

    TIpcArgs ipcArgs;

    ipcArgs.Set( 1, &aUri );

    ipcArgs.Set( 2, &mediaIdPckg );

    const TInt err = SendReceive( EBlacklistRemove, ipcArgs );

    User::LeaveIfError( err );

    WRITELOG( "RBlacklistClient::RemoveL - end" );

    }

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

// RBlacklistClient::CloseDBL()

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

//

EXPORT_C void RBlacklistClient::CloseDBL()

    {

    WRITELOG( "RBlacklistClient::CloseDBL - begin" );

    if ( !iSessionOk )

        {

        User::Leave( KErrDisconnected );

        }

    else

        {

        }

    WRITELOG( "RBlacklistClient::CloseDBL - end" );

    }

// End of File