/*

* Copyright (c) 2002-2007 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:  Starter for the virtual phonebook sim server

*

*/

// INCLUDE FILES

#include "VPbkSimServerStarter.h"

#include "VPbkSimServerCommon.h"

// CONSTANTS

//  The base name for the starter mutex

_LIT( KVPbkMutexNameExt, "_mutex_" );

const TUint32 KSimServerSid = 0x1028309E;

// ============================= LOCAL FUNCTIONS ===============================

namespace VPbkSimServerStarter

{

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

// IsServerRunning

// Returns: ETrue: if server already started

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

//

TBool IsServerRunning()

    {

    TFindProcess find;

    TBool result = EFalse;

    TFullName serverName( KVPbkSimServerExeName );

    find.Find( KVPbkSimServerExeName );

    if( find.Next( serverName ) == KErrNone )

        {

        result = ETrue;

        }

    return result;

    }

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

// StartProcess

// Starts server as a process

// Returns: KErrNone: server started successfully

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

//

TInt StartProcess()

    {

    RProcess process;

    TInt res = process.Create(

        KVPbkSimServerName,

        KNullDesC );

    if ( res != KErrNone )

        {

        return res;

        }

    TSecureId secId( KSimServerSid );

    if( process.SecureId() != secId )

        {

        process.Kill( KErrPermissionDenied );

        process.Close();

        return KErrPermissionDenied;

        }

    TRequestStatus startingStatus;

    process.Rendezvous( startingStatus );

    if ( startingStatus != KRequestPending )

        {

        process.Kill( KErrUnknown );

        }

    else

        {

        process.Resume();

        User::WaitForRequest( startingStatus );

        }        

    process.Close();

    return startingStatus.Int();

    }

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

// Start

// The public starter function the virtual phonebook sim server.

// Returns: KErrNone: server started successfully

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

//

TInt Start()

    {

    RMutex starterMutex;

    TName mutexName( KVPbkSimServerExeName );

    mutexName.Append( KVPbkMutexNameExt );

    TInt res = starterMutex.CreateGlobal( mutexName );

    if ( res == KErrAlreadyExists )

        {

        res = starterMutex.OpenGlobal( mutexName );

        }

    if ( res == KErrNone )

        {

        starterMutex.Wait();

        if ( !IsServerRunning() )

            {

            // Go to critical section

            res = StartProcess();

            }

        starterMutex.Signal();

        }

    starterMutex.Close();

    return res;

    }

}

//  End of File