--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bluetooth/btstack/linkmgr/roleswitchhelper.h	Tue Sep 14 23:28:24 2010 +0300
@@ -0,0 +1,230 @@
+// Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Symbian Foundation License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#ifndef ROLESWITCHHELPER_H
+#define ROLESWITCHHELPER_H
+
+#include <bt_sock.h>
+#include <bluetooth/hci/hciutil.h> 
+
+#include "debug.h"
+#include "linkutil.h"
+#include "physicallinkhelper.h"
+#include "physicallinks.h"
+
+// watchdog for first half of the SM including:
+// DisablingLPM, DisablingEncryption, RoleSwitch
+const TUint KTimeoutRoleSwitch =   3000000;  // 3 s; 
+
+// watchdog for EnablingEncryption
+const TUint KTimeoutOneCommand =   2000000;  // 2 s;
+ 
+class TRoleSwitcherState;
+
+NONSHARABLE_CLASS(CRoleSwitcher) : public CPhysicalLinkHelper
+	{
+	friend class TRoleSwitcherState;
+	friend class TRSStateIdle;
+	friend class TRSStateDisablingLPM;
+	friend class TRSStateDisablingEncryption;
+	friend class TRSStateChangingRole;
+	friend class TRSStateChangingRoleWithEPR;
+	friend class TRSStateEnablingEncryption;
+
+public:
+	static CRoleSwitcher* NewL(CPhysicalLinksManager& aLinkMgr, CPhysicalLink& aLink, TBTBasebandRole aRole);
+	~CRoleSwitcher();
+
+	virtual void StartHelper();
+	
+	inline TBool IsEncryptionDisabledForRoleSwitch() const;
+	inline TBTBasebandRole RequestedRole() const;
+
+	TSglQueLink   iQLink;
+
+private:
+	CRoleSwitcher(CPhysicalLinksManager& aLinkMgr, CPhysicalLink& aLink, TBTBasebandRole aRole);
+	void ConstructL(); 
+	
+	virtual void TimerExpired();
+	virtual void HandleError(TInt aError);
+	virtual void EventReceived(TBTBasebandEventNotification& aEvent);
+
+	void DisableEncryption();
+	void ChangeRole();
+	void EnableEncryption();
+	void SaveEncryption();
+	
+	void LogRoleSwitchSuccessful(TBTBasebandEventNotification& aEvent) const;
+
+	TBool					iIsEncrypted;
+	TBool					iIsActive;  // LinkMode
+	TBool					iAddedToLinkMgr;
+	TBTBasebandRole			iRole;  // Requested role    
+	TRoleSwitcherState*		iState;
+	TBool					iIsEncryptionDisabledForRoleSwitch;             
+	};
+
+//--------------------------------------------------
+// STATE FACTORY
+//--------------------------------------------------
+
+/**
+   Factory for the RoleSwitcher states
+
+   The states are flyweight classes
+**/
+NONSHARABLE_CLASS(CRoleSwitcherStateFactory) : public CBase
+	{
+public:
+	static CRoleSwitcherStateFactory* NewL();
+
+	enum TRoleSwitcherStates
+		{
+		EIdle,
+		EDisablingLPM,
+		EDisablingEncryption,
+		EChangingRole,
+		EChangingRoleWithEPR,
+		EEnablingEncryption,
+		// Note that we don't need a state to enable LPM again
+		// as this will happen implicitly when we close our 
+		// proxy SAP.
+	// *** keep next one last ***
+		ERoleSwitcherMaxState,
+		};
+	
+	TRoleSwitcherState& GetState(TRoleSwitcherStates aState);
+	TInt StateIndex(const TRoleSwitcherState* aState) const;
+	
+private:
+	CRoleSwitcherStateFactory();
+	void ConstructL();
+	TFixedArray<TRoleSwitcherState*, ERoleSwitcherMaxState> iStates;
+	};
+
+
+
+//--------------------------------------------------
+// STATES, base 
+//--------------------------------------------------
+
+NONSHARABLE_CLASS(TRoleSwitcherState)
+	{
+public:
+	TRoleSwitcherState(CRoleSwitcherStateFactory& aFactory);
+	
+	virtual void Enter(CRoleSwitcher& aContext) const;
+	virtual void Exit(CRoleSwitcher& aContext) const;
+
+	virtual void Start(CRoleSwitcher& aContext) const;
+	virtual void EventReceived(CRoleSwitcher& aContext, TBTBasebandEventNotification& aEvent) const;
+	virtual void Error(CRoleSwitcher& aContext, TInt aErr) const;
+	virtual void TimerExpired(CRoleSwitcher& aContext) const;
+
+protected:
+	// Exits old state, sets the new state, and enters it.
+	void ChangeState(CRoleSwitcher& aContext, CRoleSwitcherStateFactory::TRoleSwitcherStates aState) const;
+	void PanicInState(TLinkPanic aPanic) const;
+	
+protected:
+	CRoleSwitcherStateFactory& iFactory;
+#ifdef __FLOG_ACTIVE
+	TBuf<48> iName;
+#endif
+	};
+
+
+//--------------------------------------------------
+// STATES 
+//--------------------------------------------------
+
+NONSHARABLE_CLASS(TRSStateIdle) : public TRoleSwitcherState
+	{
+public:
+	TRSStateIdle(CRoleSwitcherStateFactory& aFactory);
+
+	virtual void Enter(CRoleSwitcher& aContext) const;
+	virtual void Start(CRoleSwitcher& aContext) const;
+	};
+
+
+NONSHARABLE_CLASS(TRSStateDisablingLPM) : public TRoleSwitcherState
+	{
+public:
+	TRSStateDisablingLPM(CRoleSwitcherStateFactory& aFactory);
+
+	virtual void Enter(CRoleSwitcher& aContext) const;
+	virtual void EventReceived(CRoleSwitcher& aContext, TBTBasebandEventNotification& aEvent) const;
+	};
+
+NONSHARABLE_CLASS(TRSStateDisablingEncryption) : public TRoleSwitcherState
+	{
+public:
+	TRSStateDisablingEncryption(CRoleSwitcherStateFactory& aFactory);
+
+	virtual void Enter(CRoleSwitcher& aContext) const;
+	virtual void EventReceived(CRoleSwitcher& aContext, TBTBasebandEventNotification& aEvent) const;
+	virtual void TimerExpired(CRoleSwitcher& aContext) const;
+	};
+
+NONSHARABLE_CLASS(TRSStateChangingRole) : public TRoleSwitcherState
+	{
+public:
+	TRSStateChangingRole(CRoleSwitcherStateFactory& aFactory);
+
+	virtual void Enter(CRoleSwitcher& aContext) const;
+	virtual void EventReceived(CRoleSwitcher& aContext, TBTBasebandEventNotification& aEvent) const;
+	virtual void TimerExpired(CRoleSwitcher& aContext) const;
+	};
+
+NONSHARABLE_CLASS(TRSStateChangingRoleWithEPR) : public TRoleSwitcherState
+	{
+public:
+	TRSStateChangingRoleWithEPR(CRoleSwitcherStateFactory& aFactory);
+
+	virtual void Enter(CRoleSwitcher& aContext) const;
+	virtual void EventReceived(CRoleSwitcher& aContext, TBTBasebandEventNotification& aEvent) const;
+	virtual void TimerExpired(CRoleSwitcher& aContext) const;
+	};
+
+NONSHARABLE_CLASS(TRSStateEnablingEncryption) : public TRoleSwitcherState
+	{
+public:
+	TRSStateEnablingEncryption(CRoleSwitcherStateFactory& aFactory);
+
+	virtual void Enter(CRoleSwitcher& aContext) const;
+	virtual void Exit(CRoleSwitcher& aContext) const;   
+	virtual void EventReceived(CRoleSwitcher& aContext, TBTBasebandEventNotification& aEvent) const;
+	virtual void TimerExpired(CRoleSwitcher& aContext) const;
+	};
+
+#ifdef __FLOG_ACTIVE
+#define STATENAME(x)  iName=_L(x)
+#else
+#define STATENAME(x)
+#endif
+
+inline TBTBasebandRole CRoleSwitcher::RequestedRole() const
+	{
+	return iRole;
+	}
+
+inline TBool CRoleSwitcher::IsEncryptionDisabledForRoleSwitch() const
+	{
+	return iIsEncryptionDisabledForRoleSwitch;
+	}
+
+#endif /* ROLESWITCHHELPER_H */