// Copyright (c) 2005-2009 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:

// INCLUDE FILES

//

#include <e32base.h>

#include <e32svr.h>

#include <ecom/ecom.h>

#include <connect/sbdefs.h>

//#include <LbsIpc.h>

//#include <StartPosServer.h>

#include <lbsipc.h>

#include "lbslocservermessageenums.h"

#include "EPos_CPosResourceReader.h"

#include <eposserver.rsg>

#include <lbs/epos_mposmodulesobserver.h>

#ifdef SYMBIAN_FEATURE_MANAGER

	#include <featdiscovery.h>

	#include <featureuids.h>

#endif

#include "epos_cposmodulessettings.h"

#include "EPos_CPosServer.h"

#include "EPos_ServerPanic.h"

#include "EPos_CPosSession.h"

#include "EPos_CPosServerDelayedShutdown.h"

#include "EPos_CPosModulesStatus.h"

#include "EPos_CPosLocMonitorReqHandlerHub.h"

#include "EPos_Global.h"

// CONSTANTS

_LIT(KPosResourceFile, "\\private\\101F97B2\\eposserver.rsc");

#ifdef _DEBUG

_LIT(KTraceFileName, "EPos_CPosServer.cpp");

#endif

// ================= SERVER'S POLICY =======================

//Definition of the ranges of IPC numbers

const TInt eposServerPolicyRanges[] = 

    {

	0,

	ELbsServerCancelAsyncRequest,

	ELbsGetDefaultModuleId,

	ELbsEmptyLastKnownPositionStore,

	ELbsServerLastMessageId,

	ELbsPositionerCancelAsyncRequest,

	ELbsPositionerOpen,

	ELbsPositionerClose,

	ELbsSetSingleRequestor,

	ELbsPositionerLastMessageId,

	ELbsPositionCustomCodesFirst

    }; 

// Total number of ranges

const TUint eposServerPolicyRangeCount = 

    sizeof(eposServerPolicyRanges) / sizeof(TInt);

// Types of Policies

enum TPolicies

    {

    EPolicyLocationNeeded = 0,

    EPolicyWriteUserDataNeeded,

    };

// Specific capability checks

const CPolicyServer::TPolicyElement eposServerPolicyElements[] = 

    {

    // policy EPolicyLocationNeeded - fail call if Location not present

    {_INIT_SECURITY_POLICY_C1(ECapabilityLocation), CPolicyServer::EFailClient},

    // policy EPolicyWriteUserDataNeeded - fail call if WriteUserData capability not present

    {_INIT_SECURITY_POLICY_C1(ECapabilityWriteUserData), CPolicyServer::EFailClient}

    };

//Policy to implement for each of the above ranges        

const TUint8 eposServerPolicyElementsIndex[eposServerPolicyRangeCount] = 

    {

    CPolicyServer::ENotSupported,

    CPolicyServer::EAlwaysPass,	            // server cancel

    EPolicyLocationNeeded,                  // GetDefModId -> NotifyModStatusEv

    EPolicyWriteUserDataNeeded,				// Empty Last Known position store 

    CPolicyServer::ENotSupported,           // reserved server's codes

    CPolicyServer::EAlwaysPass,	            // positioner cancel

    CPolicyServer::EAlwaysPass,	            // open methods

    CPolicyServer::EAlwaysPass,	            // close positioner

    EPolicyLocationNeeded,                  // SetSingReq -> GetLastKnownPositionArea

    CPolicyServer::ENotSupported,           // reserved positioner's codes

    CPolicyServer::ECustomCheck             // custom requests

    };

//Package all the above together into a policy

const CPolicyServer::TPolicy eposServerPolicy =

    {

    CPolicyServer::EAlwaysPass,             // onConnect

    eposServerPolicyRangeCount,	            // number of ranges                                   

    eposServerPolicyRanges,	                // ranges array

    eposServerPolicyElementsIndex,	        // elements<->ranges index

    eposServerPolicyElements,		        // array of elements

    };

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

/**

 * C++ constructor.

 *

 * @param aPriority Priority at which to run the server active object.

 * @param aPolicy Reference to a policy object describing the security 

 *                checks required for each message type.

 * @param aServerType Sharable or non-sharable sessions.

 */

CPosServer::CPosServer(TInt aPriority, const TPolicy &aPolicy, TServerType aServerType)

        : CPolicyServer(aPriority, aPolicy, aServerType)

    {

    }

/**

 * Symbian default constructor.

 */

void CPosServer::ConstructL() 

    {

    TBool LocationManagementSupported = EFalse;

#ifdef SYMBIAN_FEATURE_MANAGER

	LocationManagementSupported = CFeatureDiscovery::IsFeatureSupportedL(NFeature::KLocationManagement);

#else

	__ASSERT_ALWAYS(EFalse, User::Invariant());	// Would happen on older versions of symbian OS if this code ever backported

#endif      

    // make sure that root process is running 

    if(LocationManagementSupported && !FindRootProcess())

    	{

    	User::Leave(KErrNotReady);

    	}

    // Backup listener

    DEBUG_TRACE("Checking for backup or restore...", __LINE__)

    iBackupListener = CPosBackupListener::NewL();

    if (iBackupListener->IsBackupOperationOngoing())

        {

        User::Leave(KErrNotReady);

        }

    iBackupListener->Start(*this);

    // Settings and last position handler

    CPosResourceReader* resources = CPosResourceReader::NewLC(KPosResourceFile);

    iServerShutdownDelay = resources->ReadInt32L(R_POS_SERVER_SHUTDOWN_DELAY);

    TInt dumpInterval = resources->ReadInt32L(R_POS_SERVER_DUMP_INTERVAL);

    //DEBUG_TRACE("Reading last known position...", __LINE__)

    //    HBufC* lastKnownPositionFileName = resources->ReadHBufCL(R_LAST_KNOWN_POSITION_FILENAME);

    //    CleanupStack::PushL(lastKnownPositionFileName);

    iLocMonitorReqHandlerHub = CPosLocMonitorReqHandlerHub::NewL(); 

    CleanupStack::PopAndDestroy(resources);

    // Shutdown timer

    iShutdown = CPosServerDelayedShutdown::NewL();

    DEBUG_TRACE("Opening Location Settings...", __LINE__)

    // Location Settings

    iModuleSettings = CPosModuleSettings::NewL();

    iModulesStatus = CPosModulesStatus::NewL(iModuleSettings->PosModules());

    DEBUG_TRACE("Setting Location Settings observer...", __LINE__)

    iModuleSettings->AddListenerL(*this);

    DEBUG_TRACE("Starting server active object...", __LINE__)

    StartL(KPositionServerName);

    }

/**

 * Two-phased constructor.

 */

CPosServer* CPosServer::NewL()

    {

    CPosServer* self = new (ELeave) CPosServer(EPriority, eposServerPolicy);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

/**

 * Destructor.

 */

CPosServer::~CPosServer()

    {

    delete iLocMonitorReqHandlerHub;

    delete iShutdown;

    delete iModulesStatus;

    delete iModuleSettings;

    delete iBackupListener;

    // This is needed because CPositioner might have used ECom (PSYs)

    REComSession::FinalClose();

    }

/**

 * From MPosModuleSettingsListener.

 *

 * Called when a change has been detected in the modules database.

 * @param aEvent Event information

 */

void CPosServer::HandleModuleSettingsChangedL(TPosModulesEvent aEvent)

    {

    // Notify iModuleStatus

    iModulesStatus->HandleSettingsChangeL(aEvent);

    // For all sessions, call HandleSettingsChangeL()

    iSessionIter.SetToFirst();

    CPosSession* session = static_cast <CPosSession*> (iSessionIter++);

    while (session)

        {

        session->HandleSettingsChangeL(aEvent);

        session = static_cast <CPosSession*> (iSessionIter++);

        }

    }

/** 

 * From MPosBackupEventCallback

 *

 * Called by iBackupListener when a backup or restore 

 * operation either starts. Shuts down the server.

 */

void CPosServer::HandleBackupOperationEventL()

    {

    DEBUG_TRACE("HandleBackupOperationEventL", __LINE__)

    conn::TBURPartType state = conn::EBURUnset;

    conn::TBackupIncType type = conn::ENoBackup;

    iBackupListener->GetCurrentValue(state, type);

    // At the moment it just shuts down if backup/restore is in progress

    if ((state != conn::EBURUnset) && (state != conn::EBURNormal))

        {

        iSessionIter.SetToFirst();

        CPosSession* session = static_cast <CPosSession*> (iSessionIter++);

        while (session)

            {

            session->NotifyServerShutdown();

            session = static_cast <CPosSession*> (iSessionIter++);

            }

        // Shutdown the server by shutting down the active scheduler.

        CActiveScheduler::Stop();

        }

    else

        {

        iBackupListener->Start(*this); // continue listening

        }

    }

/**

 * From CServer2

 */

CSession2* CPosServer::NewSessionL(const TVersion& aVersion, const RMessage2& /*aMessage*/) const

    {

    // Check we're the right version

    TVersion version(KPosMajorVersionNumber,

                     KPosMinorVersionNumber,

                     KPosBuildVersionNumber);

    if (!User::QueryVersionSupported(version, aVersion))

        {

        User::Leave(KErrNotSupported);

        }

    // Make new session

    CPosSession* newSession = 

        CPosSession::NewL(

            *(const_cast<CPosServer*>(this)), 

            *iModuleSettings,

            *iModulesStatus, 

            *iLocMonitorReqHandlerHub);

    return newSession;

    }

/**

 * From CPolicyServer

 */

CPolicyServer::TCustomResult CPosServer::CustomSecurityCheckL(const RMessage2& /*aMsg*/, TInt& /*aAction*/,TSecurityInfo& /*aMissing*/)

    {

    DEBUG_TRACE("CustomSecurityCheck", __LINE__)

    return CPolicyServer::EFail;

    }

/**

 * Increment number of sessions

 */

void CPosServer::IncrementSessions()

    {

    DEBUG_TRACE("IncrementSessions", __LINE__)

    iNumSessions++;

    iShutdown->Cancel();

    }

/**

 * Decrement number of sessions

 */

void CPosServer::DecrementSessions()

    {    

    DEBUG_TRACE("DecrementSessions", __LINE__)

    // This panic handles an internal error.

    __ASSERT_DEBUG(iNumSessions > 0,

        DebugPanic(EPosServerPanicSessionsCountInconsistency));

    if (--iNumSessions == 0)

        {

        iShutdown->Start(iServerShutdownDelay);

        }

    }

TBool CPosServer::FindRootProcess()

	{

	_LIT(KLbsRootProcessName, "lbsroot.exe*");

	TInt err(KErrNotFound);

	TFullName fullName;			

	TFindProcess processFinder(KLbsRootProcessName);

	while (err = processFinder.Next(fullName), err == KErrNone)

		{

		RProcess process;

		TInt processOpenErr = process.Open(processFinder);

		if (processOpenErr == KErrNone)

			{

			TExitType exitType = process.ExitType();

			if (exitType == EExitPending)

				{

				// Found a running instance of lbsroot.exe,

				return ETrue;

				}

			}

		process.Close();		

		}

	return EFalse;

	}

//  End of File