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// Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include <bluetooth/logger.h>
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#include "roleswitchhelper.h"
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#include "physicallinksmanager.h"
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#include "AclDataQController.h"
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#include "ProxySAP.h"
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#include "linkmgr.h"
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#ifdef __FLOG_ACTIVE
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_LIT8(KLogComponent, LOG_COMPONENT_LINKMGR);
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#endif
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CRoleSwitcher::CRoleSwitcher(CPhysicalLinksManager& aLinkMgr, CPhysicalLink& aLink, TBTBasebandRole aRole)
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: CPhysicalLinkHelper(aLinkMgr, aLink)
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, iRole(aRole)
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, iIsEncryptionDisabledForRoleSwitch(EFalse)
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{
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LOG_FUNC
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iState = &iLinkMgr.RoleSwitcherStateFactory().GetState(CRoleSwitcherStateFactory::EIdle);
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}
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CRoleSwitcher* CRoleSwitcher::NewL(CPhysicalLinksManager& aLinkMgr, CPhysicalLink& aLink, TBTBasebandRole aRole)
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{
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LOG_STATIC_FUNC
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CRoleSwitcher* self = new(ELeave) CRoleSwitcher(aLinkMgr, aLink, aRole);
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CleanupStack::PushL(self);
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self->ConstructL();
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CleanupStack::Pop(self);
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return self;
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}
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void CRoleSwitcher::ConstructL()
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{
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LOG_FUNC
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BaseConstructL();
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// add ourselves to the list in LinkMgr, LinkMgr will kick off the role change state machine
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iLinkMgr.AddRoleSwitcher(*this);
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iAddedToLinkMgr = ETrue;
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}
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CRoleSwitcher::~CRoleSwitcher()
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{
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LOG_FUNC
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if (iAddedToLinkMgr)
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{
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iLinkMgr.RemoveRoleSwitcher(*this);
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}
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}
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void CRoleSwitcher::TimerExpired()
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{
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LOG_FUNC
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iState->TimerExpired(*this);
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}
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void CRoleSwitcher::HandleError( TInt aError)
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{
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LOG_FUNC
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iState->Error(*this, aError);
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}
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void CRoleSwitcher::DisableEncryption()
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{
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LOG_FUNC
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// data traffic suspended
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iLinkMgr.LinkManagerProtocol().ACLController().SetParked(iLink.Handle(), ETrue);
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NotifyBasebandEvent(ENotifyEncryptionChangeOff);
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iLinkMgr.Encrypt(EFalse, iLink);
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// set flag here, it's too late when we receive the event as AccessReqester
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// might receive the baseband notification earlier then the flag is set!
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iIsEncryptionDisabledForRoleSwitch = ETrue;
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}
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void CRoleSwitcher::EnableEncryption()
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{
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LOG_FUNC
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NotifyBasebandEvent(ENotifyEncryptionChangeOn);
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iLinkMgr.Encrypt(ETrue, iLink);
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// data traffic is enabled in IoctlComplete
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}
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void CRoleSwitcher::ChangeRole()
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{
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LOG_FUNC
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NotifyBasebandEvent(ENotifyAnyRole);
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iLinkMgr.ChangeRole(iRole, iLink);
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}
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void CRoleSwitcher::StartHelper()
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{
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LOG_FUNC
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iState->Start(*this);
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}
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void CRoleSwitcher::SaveEncryption()
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{
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LOG_FUNC
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iIsEncrypted = iLink.Encrypted();
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}
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void CRoleSwitcher::LogRoleSwitchSuccessful(TBTBasebandEventNotification& aEvent) const
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{
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LOG_FUNC
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TInt eventType;
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eventType = (iRole == EMaster ? ENotifyMaster :ENotifySlave);
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if (aEvent.EventType()==eventType && aEvent.ErrorCode()==KErrNone)
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{
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LOG(_L("CRoleSwitcher RoleSwitch OK"));
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}
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else
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{
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LOG(_L("CRoleSwitcher RoleSwitch failed"));
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}
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}
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void CRoleSwitcher::EventReceived(TBTBasebandEventNotification& aEvent)
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{
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LOG_FUNC
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iState->EventReceived(*this, aEvent);
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}
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//----------------------------------------------------------------------------------
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// STATE FACTORY
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//----------------------------------------------------------------------------------
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CRoleSwitcherStateFactory* CRoleSwitcherStateFactory::NewL()
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{
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LOG_STATIC_FUNC
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CRoleSwitcherStateFactory* ret=new (ELeave) CRoleSwitcherStateFactory();
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CleanupStack::PushL(ret);
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ret->ConstructL();
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CleanupStack::Pop(ret);
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return ret;
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}
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void CRoleSwitcherStateFactory::ConstructL()
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{
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LOG_FUNC
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iStates[EIdle] =new (ELeave) TRSStateIdle(*this);
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iStates[EDisablingLPM] =new (ELeave) TRSStateDisablingLPM(*this);
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iStates[EDisablingEncryption] =new (ELeave) TRSStateDisablingEncryption(*this);
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iStates[EChangingRole] =new (ELeave) TRSStateChangingRole(*this);
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iStates[EChangingRoleWithEPR] =new (ELeave) TRSStateChangingRoleWithEPR(*this);
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iStates[EEnablingEncryption] =new (ELeave) TRSStateEnablingEncryption(*this);
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}
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CRoleSwitcherStateFactory::CRoleSwitcherStateFactory()
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{
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LOG_FUNC
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iStates.DeleteAll();
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}
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TRoleSwitcherState& CRoleSwitcherStateFactory::GetState(CRoleSwitcherStateFactory::TRoleSwitcherStates aState)
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{
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LOG_FUNC
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__ASSERT_DEBUG(iStates[aState], Panic(ERoleSwitcherInvalidState));
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return *iStates[aState];
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}
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TInt CRoleSwitcherStateFactory::StateIndex(const TRoleSwitcherState* aState) const
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{
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LOG_FUNC
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TInt state;
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for (state = 0; state < ERoleSwitcherMaxState; state++)
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{
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if (iStates[state] == aState)
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{
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return state;
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}
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}
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return KUnknownState;
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}
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//----------------------------------------------------------------------------------
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// STATES
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//----------------------------------------------------------------------------------
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TRoleSwitcherState::TRoleSwitcherState(CRoleSwitcherStateFactory& aFactory)
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: iFactory(aFactory)
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{
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LOG_FUNC
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}
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void TRoleSwitcherState::PanicInState(TLinkPanic aPanic) const
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{
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LOG_FUNC
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Panic(aPanic, iFactory.StateIndex(this));
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}
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void TRoleSwitcherState::ChangeState(CRoleSwitcher& aContext, CRoleSwitcherStateFactory::TRoleSwitcherStates aState) const
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{
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LOG_FUNC
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aContext.iState->Exit(aContext);
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#ifdef __FLOG_ACTIVE
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TRoleSwitcherState* state=&iFactory.GetState(aState);
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LOG2(_L("RoleSwitcher: State %S -> %S"), &aContext.iState->iName, &state->iName);
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#endif //__FLOG_ACTIVE
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aContext.iState=&iFactory.GetState(aState);
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aContext.iState->Enter(aContext);
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}
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void TRoleSwitcherState::Enter(CRoleSwitcher& /*aContext*/) const
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{
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LOG_FUNC
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// do nothing
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}
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void TRoleSwitcherState::Exit(CRoleSwitcher& /*aContext*/) const
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{
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LOG_FUNC
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// do nothing
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}
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void TRoleSwitcherState::Start(CRoleSwitcher& /*aContext*/) const
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{
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LOG_FUNC
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PanicInState(ERoleSwitcherStateMachineInvalidEvent);
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}
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void TRoleSwitcherState::Error(CRoleSwitcher& aContext, TInt /*aErr*/) const
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{
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LOG_FUNC
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aContext.CancelNotify();
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aContext.RemoveTimer();
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ChangeState(aContext, CRoleSwitcherStateFactory::EIdle);
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}
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void TRoleSwitcherState::EventReceived(CRoleSwitcher& /*aContext*/, TBTBasebandEventNotification& /*aEvent*/) const
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{
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LOG_FUNC
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// do nothing
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}
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void TRoleSwitcherState::TimerExpired(CRoleSwitcher& aContext) const
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{
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LOG_FUNC
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ChangeState(aContext, CRoleSwitcherStateFactory::EIdle);
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}
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//----------------------------------------------------------------------------------
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TRSStateIdle::TRSStateIdle(CRoleSwitcherStateFactory& aFactory)
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: TRoleSwitcherState(aFactory)
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{
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LOG_FUNC
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STATENAME("TRSStateIdle");
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}
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void TRSStateIdle::Start(CRoleSwitcher& aContext) const
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{
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LOG_FUNC
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aContext.QueueTimer(KTimeoutRoleSwitch); // watchdog timer
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ChangeState(aContext, CRoleSwitcherStateFactory::EDisablingLPM);
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}
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void TRSStateIdle::Enter(CRoleSwitcher& aContext) const
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{
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LOG_FUNC
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// async call to delete the helper
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aContext.iLink.AsyncDeleteRoleSwitcher();
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}
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//----------------------------------------------------------------------------------
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TRSStateDisablingLPM::TRSStateDisablingLPM(CRoleSwitcherStateFactory& aFactory)
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: TRoleSwitcherState(aFactory)
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{
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LOG_FUNC
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STATENAME("TRSStateDisablingLPM");
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}
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void TRSStateDisablingLPM::Enter(CRoleSwitcher& aContext) const
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{
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LOG_FUNC
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// DisableLPM even if link is active to prevent possible LPM requests during encryption disabling
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if (aContext.iLink.LinkMode() == EActiveMode)
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{
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aContext.DisableLPM();
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if (aContext.IsEPRSupported())
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{
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ChangeState(aContext, CRoleSwitcherStateFactory::EChangingRoleWithEPR);
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}
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else
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{
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ChangeState(aContext, CRoleSwitcherStateFactory::EDisablingEncryption);
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}
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// don't wait for notification
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}
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else
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{
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aContext.NotifyBasebandEvent(ENotifyActiveMode);
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aContext.DisableLPM();
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}
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}
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void TRSStateDisablingLPM::EventReceived(CRoleSwitcher& aContext, TBTBasebandEventNotification& aEvent) const
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{
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LOG_FUNC
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if (aEvent.EventType()==ENotifyActiveMode && aEvent.ErrorCode()==KErrNone)
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{
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if (aContext.IsEPRSupported())
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{
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ChangeState(aContext, CRoleSwitcherStateFactory::EChangingRoleWithEPR);
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}
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else
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{
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ChangeState(aContext, CRoleSwitcherStateFactory::EDisablingEncryption);
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}
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}
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else
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{
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LOG(_L("CRoleSwitcher RoleSwitch failed in DisableLPM"));
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// we can quit SM, don't need to rewind
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ChangeState(aContext, CRoleSwitcherStateFactory::EIdle);
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}
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}
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//----------------------------------------------------------------------------------
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TRSStateDisablingEncryption::TRSStateDisablingEncryption(CRoleSwitcherStateFactory& aFactory)
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: TRoleSwitcherState(aFactory)
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{
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LOG_FUNC
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STATENAME("TRSStateDisablingEncryption");
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}
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void TRSStateDisablingEncryption::Enter(CRoleSwitcher& aContext) const
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{
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LOG_FUNC
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aContext.SaveEncryption();
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if (aContext.iIsEncrypted)
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{
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aContext.DisableEncryption();
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}
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else
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{
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ChangeState(aContext, CRoleSwitcherStateFactory::EChangingRole);
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}
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}
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void TRSStateDisablingEncryption::EventReceived(CRoleSwitcher& aContext, TBTBasebandEventNotification& aEvent) const
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{
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LOG_FUNC
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if (aEvent.EventType()==ENotifyEncryptionChangeOff && aEvent.ErrorCode()==KErrNone)
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{
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ChangeState(aContext, CRoleSwitcherStateFactory::EChangingRole);
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}
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else
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{
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LOG(_L("CRoleSwitcher RoleSwitch failed in DisableEncryption"));
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// before quiting SM , try to enable LPM
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ChangeState(aContext, CRoleSwitcherStateFactory::EIdle);
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}
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}
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void TRSStateDisablingEncryption::TimerExpired(CRoleSwitcher& aContext) const
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{
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LOG_FUNC
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aContext.CancelNotify();
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ChangeState(aContext, CRoleSwitcherStateFactory::EEnablingEncryption);
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}
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//----------------------------------------------------------------------------------
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TRSStateChangingRole::TRSStateChangingRole(CRoleSwitcherStateFactory& aFactory)
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: TRoleSwitcherState(aFactory)
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{
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LOG_FUNC
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STATENAME("TRSStateChangingRole");
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}
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void TRSStateChangingRole::Enter(CRoleSwitcher& aContext) const
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{
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LOG_FUNC
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aContext.ChangeRole();
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}
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void TRSStateChangingRole::EventReceived(CRoleSwitcher& aContext, TBTBasebandEventNotification& __DEBUG_ONLY(aEvent)) const
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{
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LOG_FUNC
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aContext.RemoveTimer(); // cancel watchdog timer
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FTRACE(aContext.LogRoleSwitchSuccessful(aEvent));
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ChangeState(aContext, CRoleSwitcherStateFactory::EEnablingEncryption);
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}
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void TRSStateChangingRole::TimerExpired(CRoleSwitcher& aContext) const
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{
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LOG_FUNC
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aContext.CancelNotify();
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ChangeState(aContext, CRoleSwitcherStateFactory::EEnablingEncryption);
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}
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//----------------------------------------------------------------------------------
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TRSStateChangingRoleWithEPR::TRSStateChangingRoleWithEPR(CRoleSwitcherStateFactory& aFactory)
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: TRoleSwitcherState(aFactory)
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{
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LOG_FUNC
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STATENAME("TRSStateChangingRoleWithEPR");
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}
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void TRSStateChangingRoleWithEPR::Enter(CRoleSwitcher& aContext) const
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{
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LOG_FUNC
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aContext.ChangeRole();
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}
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436 |
void TRSStateChangingRoleWithEPR::EventReceived(CRoleSwitcher& aContext, TBTBasebandEventNotification& __DEBUG_ONLY(aEvent)) const
|
|
437 |
{
|
|
438 |
LOG_FUNC
|
|
439 |
aContext.RemoveTimer(); // cancel watchdog timer
|
|
440 |
|
|
441 |
FTRACE(aContext.LogRoleSwitchSuccessful(aEvent));
|
|
442 |
|
|
443 |
ChangeState(aContext, CRoleSwitcherStateFactory::EIdle);
|
|
444 |
}
|
|
445 |
|
|
446 |
void TRSStateChangingRoleWithEPR::TimerExpired(CRoleSwitcher& aContext) const
|
|
447 |
{
|
|
448 |
LOG_FUNC
|
|
449 |
aContext.CancelNotify();
|
|
450 |
ChangeState(aContext, CRoleSwitcherStateFactory::EIdle);
|
|
451 |
}
|
|
452 |
|
|
453 |
//----------------------------------------------------------------------------------
|
|
454 |
TRSStateEnablingEncryption::TRSStateEnablingEncryption(CRoleSwitcherStateFactory& aFactory)
|
|
455 |
: TRoleSwitcherState(aFactory)
|
|
456 |
{
|
|
457 |
LOG_FUNC
|
|
458 |
STATENAME("TRSStateEnablingEncryption");
|
|
459 |
}
|
|
460 |
|
|
461 |
void TRSStateEnablingEncryption::Enter(CRoleSwitcher& aContext) const
|
|
462 |
{
|
|
463 |
LOG_FUNC
|
|
464 |
if (aContext.iIsEncrypted)
|
|
465 |
{
|
|
466 |
aContext.QueueTimer(KTimeoutOneCommand);
|
|
467 |
aContext.EnableEncryption();
|
|
468 |
}
|
|
469 |
else
|
|
470 |
{
|
|
471 |
ChangeState(aContext, CRoleSwitcherStateFactory::EIdle);
|
|
472 |
}
|
|
473 |
}
|
|
474 |
|
|
475 |
void TRSStateEnablingEncryption::Exit(CRoleSwitcher& aContext) const
|
|
476 |
{
|
|
477 |
LOG_FUNC
|
|
478 |
if (aContext.iIsEncrypted)
|
|
479 |
{
|
|
480 |
// enable data traffic
|
|
481 |
aContext.iLinkMgr.LinkManagerProtocol().ACLController().SetParked(aContext.iLink.Handle(), EFalse);
|
|
482 |
}
|
|
483 |
}
|
|
484 |
|
|
485 |
void TRSStateEnablingEncryption::EventReceived(CRoleSwitcher& aContext, TBTBasebandEventNotification& aEvent) const
|
|
486 |
{
|
|
487 |
LOG_FUNC
|
|
488 |
aContext.RemoveTimer(); // watchdog timer
|
|
489 |
if (aEvent.EventType()==ENotifyEncryptionChangeOn && aEvent.ErrorCode()==KErrNone)
|
|
490 |
{
|
|
491 |
ChangeState(aContext, CRoleSwitcherStateFactory::EIdle);
|
|
492 |
aContext.iIsEncryptionDisabledForRoleSwitch = EFalse;
|
|
493 |
}
|
|
494 |
else
|
|
495 |
{
|
|
496 |
LOG(_L("CRoleSwitcher SetEncryption failed, disconnect link"));
|
|
497 |
if (aContext.iLink.Terminate(ERemoteUserEndedConnection) != KErrNone)
|
|
498 |
{
|
|
499 |
LOG(_L("CRoleSwitcher OOM"));
|
|
500 |
}
|
|
501 |
ChangeState(aContext, CRoleSwitcherStateFactory::EIdle);
|
|
502 |
}
|
|
503 |
}
|
|
504 |
|
|
505 |
void TRSStateEnablingEncryption::TimerExpired(CRoleSwitcher& aContext) const
|
|
506 |
{
|
|
507 |
LOG_FUNC
|
|
508 |
LOG(_L("CRoleSwitcher Timeout in EncryptionEnable, disconnect"));
|
|
509 |
aContext.CancelNotify();
|
|
510 |
if (aContext.iLink.Terminate(ERemoteUserEndedConnection) != KErrNone)
|
|
511 |
{
|
|
512 |
LOG(_L("CRoleSwitcher OOM"));
|
|
513 |
}
|
|
514 |
ChangeState(aContext, CRoleSwitcherStateFactory::EIdle);
|
|
515 |
}
|
|
516 |
|
|
517 |
|
|
518 |
|