// Copyright (c) 2006-2009 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:

//

/**

 @file

 @internalComponent 

*/

#include "sysmoncliserv.h"

#include "sysmonserver.h"

#include "monitor.h"

#include "sysmonservsess.h"

#include "timerlist.h"

#include "shmadebug.h"

#include "shmapanic.h"

// The process which requests for cancelling all the outstanding monitors should have 

// the SSM server secure UID.

#define KSsmSecureId 0x2000D75B

const TInt KSecurityCheckForRequest = 0;

// ------------------- Policy Server Security Setup ----------------------

const TUint  KRangeCount = 3;

const TInt   KRanges[KRangeCount] =

    {

    EMonitor,               //range: EMonitor...(ECancelAllMonitors-1) inclusive

    ECancelAllMonitors,

    EMaxSysMonMessage

    };

/**

 Specifies the appropriate action for each range in KRanges.

 The nth element of KElementsIndex specifies the appropriate action for the nth range in KRanges.

 */

const TUint8 KElementsIndex[KRangeCount] =

    {

    CPolicyServer::EAlwaysPass,	//Message is processed as normal; either by passing it to the ServiceL() method of a session

    KSecurityCheckForRequest,

    CPolicyServer::ENotSupported

    };

	/**

 Array containing the different security checks performed by this server 

 */

const CPolicyServer::TPolicyElement KPolicyElements[] = 

	{ 

	{_INIT_SECURITY_POLICY_S0(KSsmSecureId), CPolicyServer::EFailClient}

	};

/**

 Setup a security policy that always allows connection requests for all requests.

 */

const CPolicyServer::TPolicy KSysmonServerPolicy =

    {

    CPolicyServer::EAlwaysPass, // Always allow connection requests

    KRangeCount,

    KRanges,

    KElementsIndex,

    KPolicyElements

    };

CSysMonServer* CSysMonServer::NewLC()

	{

	CSysMonServer* server = new(ELeave) CSysMonServer();

	CleanupStack::PushL(server);

	server->ConstructL();

	return server;		

	}

void CSysMonServer::ConstructL()

	{

	StartL(KSysMonServerName);	

	}

CSysMonServer::CSysMonServer()

	:CPolicyServer(EPriorityHigh, KSysmonServerPolicy),

	 iShutDownInProgress(EFalse),

	 iMonitors(CMonitor::iOffset),

	 iIter(iMonitors) 

	{

	}

CSysMonServer::~CSysMonServer()	

	{

	CancelAllMonitors();

	}

TBool CSysMonServer::ShutDownInProgress() const

	{

	return iShutDownInProgress;

	}

void CSysMonServer::CancelAllMonitors()

	{

	//timerlist has to be deleted before cancelling the monitors, otherwise the system would crash

	//in case the time callback is called after the monitor is deleted.

	delete iTimerList;

	iTimerList = NULL;

	DEBUGPRINT1(_L("CSysMonServer CancelAllMonitors"));

	iShutDownInProgress = ETrue;

	iIter.SetToFirst();

	CMonitor *monitor = NULL;

	while ((monitor = iIter++) != NULL)

		{

		iMonitors.Remove(*monitor); // removing each of the monitors from the list

		delete monitor; 	// delete will also cancel monitoring

		}	

	}

/*

Call CSysMonServer::AddMonitorL to add monitor to the linked list.

Also calls SetActive() on aMonitor.

*/	

void CSysMonServer::AddAndStartMonitorL(CMonitor* aMonitor)

	{

	iIter.SetToFirst();

	TProcessId id = aMonitor->ProcessId();

	CMonitor *monitor = NULL;

	while ((monitor = iIter++) != NULL)

		{

		if (monitor->ProcessId() == id) //  check if the process is already been monitored

			{

			DEBUGPRINT1(_L("This process is already been monitored."));

			User::Leave(KErrAlreadyExists);

			}			

		}

	aMonitor->Start(); // activate the monitoring

	iMonitors.AddFirst(*aMonitor);

	CleanupStack::Pop(aMonitor);

	DEBUGPRINT2(_L("Monitor inserted into SysMon server. ProcessId=%Lu"), id.Id());

	}

void CSysMonServer::CancelMonitor(const TProcessId& aProcessId)

	{

	iIter.SetToFirst();

	CMonitor *monitor = NULL;

	while ((monitor = iIter++) != NULL)

		{

		if (monitor->ProcessId() == aProcessId) // find the process in the list

			{

			break;

			}		

		}

	if (monitor == NULL)

		{

		return;

		}

	iMonitors.Remove(*monitor);// remove the monitor from the list.

	delete monitor;	// delete will also cancel monitoring

	}

CTimerList& CSysMonServer::TimerListL()

	{

	if (iTimerList == NULL)

		{

		iTimerList = CTimerList::NewL(EPriorityLow);

		}

	return *iTimerList;

	}

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

	{

	return CSysMonSession::NewL();

	}

static void RunServerL()

//

// Perform all server initialisation, in particular creation of the

// scheduler and server and then run the scheduler

//

	{

	DEBUGPRINT1(_L("SysMon: Going to run server"));	

	User::SetCritical(User::ESystemCritical);

	// create and install the active scheduler we need

	CActiveScheduler* s = new(ELeave) CActiveScheduler;

	CleanupStack::PushL(s);

	CActiveScheduler::Install(s);

	DEBUGPRINT1(_L("SysMon: Creating Server..."));	

	// create the server (leave it on the cleanup stack)

	CSysMonServer::NewLC();

	DEBUGPRINT1(_L("Doing Rendezvous..."));	

	// Initialisation complete, now signal the client

	RProcess::Rendezvous(KErrNone);

	DEBUGPRINT1(_L("SysMon: Starting Scheduler..."));	

	// Ready to run

	CActiveScheduler::Start();

	// Cleanup the server and scheduler

	CleanupStack::PopAndDestroy(2, s);

	}

TInt E32Main()

//

// Server process entry-point

//

	{

	__UHEAP_MARK;

	CTrapCleanup* cleanup=CTrapCleanup::New();

	TInt r = KErrNoMemory;

	if (cleanup)

		{

		TRAP(r,RunServerL());

		delete cleanup;

		}

	__UHEAP_MARKEND;

	return r;

	}//lint -e765 -e714 Suppress 'not referenced' and 'could be static'