/*

* Copyright (c) 2007-2008 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: This file implements class CFSMailServerAutoStart.

*

*/

#include "emailtrace.h"

#include "emailshutdownconst.h"

#include "fsmailserverautostart.h"

_LIT( KFSMailServerAutoStartName, "FSMailServerAutoStart" );

// Format string for process finder to find processes by executable name

_LIT( KFormatProcessFinder, "%S*" );

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

CFSMailServerAutoStart* CFSMailServerAutoStart::NewL()

    {

    FUNC_LOG;

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

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

CFSMailServerAutoStart::CFSMailServerAutoStart()

    {

    FUNC_LOG;

    }

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

// Currently is chosen that no errors are leaked out of this class

// if possible.

// In case of failure in timer construction this might not be possible,

// but that should be improbable.

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

void CFSMailServerAutoStart::ConstructL()

    {

    FUNC_LOG;

    // start fs mail server

    TRAPD( startError, StartOneApplicationL( KEmailShutdownHandlerExe() ) );

    if ( startError != KErrNone )

        {

        ERROR_1( startError, "EmailServerMonitor start failed, error code: %d", startError );

        }

    }

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

// Starts one application by the executable name given as parameter

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

//

void CFSMailServerAutoStart::StartOneApplicationL( const TDesC& aAppName ) const

    {

    FUNC_LOG;

    // Start the application only if it's not already running

    if( !IsProcessRunningL( aAppName ) )

        {

        RProcess process;

        TInt err = process.Create( aAppName, KEmailShutdownHandlerArgRestart );

        if( err == KErrNone )

            {

            TRequestStatus stat = KRequestPending;

            process.Rendezvous( stat );

            if( stat != KRequestPending )

                {            

                ERROR_1( stat.Int(), "RProcess::Rendezvous failed, error code: %d", stat.Int() );

                process.Kill( KErrNone );

                }

            else

                {            

                process.Resume();

                User::WaitForRequest( stat );

                }

            }

        else

            {

            ERROR_1( err, "RProcess::Create failed, error code: %d", err );

            }

        process.Close();

        }

    }

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

// Checks if process with the specified name is running

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

TBool CFSMailServerAutoStart::IsProcessRunningL( const TDesC& aAppName ) const

    {

    TFullName fullName;

    HBufC* findBuf = HBufC::NewLC( aAppName.Length() + KFormatProcessFinder().Length() );

    findBuf->Des().Format( KFormatProcessFinder, &aAppName );

    TFindProcess findProcess( *findBuf );

    TBool found = EFalse;

    // Loop through all the found processes to check is any of those running

    while( !found && findProcess.Next( fullName ) == KErrNone )

        {

        RProcess process;

        TInt error = process.Open( findProcess );

        // Check is the found process alive

        if( error == KErrNone &&

            process.ExitType() == EExitPending )

            {

            found = ETrue;

            }

        process.Close();

        }

    CleanupStack::PopAndDestroy( findBuf );

    return found;

    }

//Main Thread Entry point

GLDEF_C TInt E32Main()

    {

    RThread::RenameMe( KFSMailServerAutoStartName );

    // Create the cleanup stack

    CTrapCleanup* cleanup = NULL;

    cleanup = CTrapCleanup::New();

    if ( cleanup == NULL )

        {

        // No errors leaked outside, return success.

        return KErrNone;

        }

    CFSMailServerAutoStart* autoStart = NULL;

    TRAPD( mainError, autoStart = CFSMailServerAutoStart::NewL() );

    if ( mainError != KErrNone )

        {

        ERROR_1( mainError, "EmailServerMonitor start failed, error code: %d", mainError );

        }

    // Delete all objects created above.	

    delete autoStart;

    delete cleanup;

    return KErrNone; 

    } // end E32Main