// Copyright (c) 1999-2009 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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// This implements the CL2CAPProtocol object that is the contact point from+
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// BT PRT to the L2cap stack+
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// +
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//+
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+
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#include <bluetooth/logger.h>+
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#include <bt_sock.h>+
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#include <bluetooth/aclsockaddr.h>+
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+
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#include "l2cap.h"+
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+
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#include "l2sapstates.h"+
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#include "l2util.h"+
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#include "linkmgr.h"+
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#include "l2capSAPSignalHandler.h"+
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#include "l2sap.h"+
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+
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+
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#ifdef _DEBUG+
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#include "L2CapDebugControlInterface.h"+
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#endif+
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+
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#ifdef __FLOG_ACTIVE+
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_LIT8(KLogComponent, LOG_COMPONENT_L2CAP);+
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#endif+
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+
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// Construction & Initialisation+
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+
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CL2CAPProtocol::CL2CAPProtocol(CBTSecMan& aSecMan, RBTControlPlane& aControlPlane, CBTCodServiceMan& aCodMan)+
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 : CBluetoothProtocolBase(aSecMan, aControlPlane, aCodMan)+
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	{+
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	LOG_FUNC+
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	TCallBack cb(TryToClose, this);+
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	iIdleTimerEntry.Set(cb);+
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	}+
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+
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CL2CAPProtocol::~CL2CAPProtocol()+
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	{+
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	LOG_FUNC+
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	RemoveIdleTimerEntry();+
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+
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	delete iStateFactory;+
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	delete iSigStateFactory;+
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	+
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	if(LowerProtocol())+
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		{+
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		LowerProtocol()->Close();+
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		}+
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+
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	// Delete the Mux controller.+
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	delete iMuxController;+
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+
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#ifdef _DEBUG+
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	SBtTls* tls = static_cast<SBtTls*>(Dll::Tls());+
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	CDebugControlInterface* ptr = tls->iDebugCtrlIF;+
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	delete ptr;+
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	tls->iDebugCtrlIF = NULL;+
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#endif+
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+
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#ifdef __FLOG_ACTIVE+
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	CLOSE_LOGGER+
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#endif+
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	}+
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+
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CL2CAPProtocol* CL2CAPProtocol::NewL(CBTSecMan& aSecMan, RBTControlPlane& aControlPlane, CBTCodServiceMan& aCodMan)+
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	{+
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#ifdef __FLOG_ACTIVE+
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	CONNECT_LOGGER+
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#endif+
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	LOG_STATIC_FUNC+
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	CL2CAPProtocol* prot = new (ELeave) CL2CAPProtocol(aSecMan, aControlPlane, aCodMan);+
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	CleanupStack::PushL(prot);+
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	prot->ConstructL();+
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	CleanupStack::Pop();+
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	return prot;+
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	}+
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+
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void CL2CAPProtocol::ConstructL()+
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	{+
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	LOG_FUNC+
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	iMuxController = new (ELeave) CL2CAPMuxController(*this);	+
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	}+
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+
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void CL2CAPProtocol::InitL(TDesC& /*aTag*/)+
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/**+
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	Pre-binding initialise.+
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	Allocate any objects we need here.+
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	The socket ensures that this function will only be called once per+
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	object of this class, regardless of how long it hangs around.+
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**/+
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	{+
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	LOG_FUNC+
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	// Init +
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	__ASSERT_DEBUG(!iClosePending, Panic(EL2CAPProtocolOpenedAfterClose));+
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	__ASSERT_DEBUG(!iIdleEntryQueued, Panic(EL2CAPProtocolOpenedAfterClose));+
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	__ASSERT_DEBUG(!iStateFactory, Panic(EL2CAPProtocolOpenedAfterClose));+
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	__ASSERT_DEBUG(!iSigStateFactory, Panic(EL2CAPProtocolOpenedAfterClose));+
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+
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	// Create all the things we need now+
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	LOG(_L("L2CAP : Initialising states"));+
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	iStateFactory=CL2CAPSAPStateFactory::NewL();+
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	iSigStateFactory=CL2CAPSignalStateFactory::NewL();+
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	LOG(_L("L2CAP : Initialising complete"));+
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+
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#ifdef _DEBUG+
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	SBtTls* tls = static_cast<SBtTls*>(Dll::Tls());+
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	tls->iDebugCtrlIF = CDebugControlInterface::NewL();+
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#endif+
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	}+
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+
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+
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void CL2CAPProtocol::StartL()+
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/**+
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	Binding complete.+
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	Startup call from socket.  Do nothing+
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**/+
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	{+
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	LOG_FUNC+
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	}+
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+
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// From higher protocol+
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void CL2CAPProtocol::BindL(CProtocolBase* /*aProtocol*/, TUint /*aId*/)+
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	{+
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	// Could register the protocol that's bound to us+
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	LOG_FUNC+
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	}+
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+
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void CL2CAPProtocol::BindToL(CProtocolBase* aProtocol)+
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	{+
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	LOG_FUNC+
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#ifdef _DEBUG+
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	TServerProtocolDesc prtDesc;+
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	aProtocol->Identify(&prtDesc);+
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+
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	if(prtDesc.iAddrFamily!=KBTAddrFamily ||+
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	   prtDesc.iProtocol!=KBTLinkManager)+
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		{+
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		LEAVEL(KErrBtEskError);+
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		}+
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#endif+
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	aProtocol->BindL(this, 0);+
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	aProtocol->Open();+
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	iLowerProtocol = static_cast<CBluetoothProtocolBase*>(aProtocol);+
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	}+
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+
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// Factory functions+
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CServProviderBase* CL2CAPProtocol::NewSAPL(TUint aSockType)+
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/** +
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	Create a new SAP.+
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	The SAP returned is owned by the caller -- this protocol will not clean it up.+
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	The socket uses this function to create a new SAP, and the socket will delete when it+
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	is finished with it.+
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**/+
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	{+
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	LOG_FUNC+
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	+
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	CL2CAPConnectionSAP* lsap = NULL;+
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		+
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	switch(aSockType)+
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		{+
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	case KSockSeqPacket:  // packet interface+
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		lsap=CL2CAPConnectionSAP::NewL(*this);+
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		break;+
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	default:+
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		LEAVEL(KErrNotSupported);+
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		break;+
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		}+
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+
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	return lsap;+
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	}+
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+
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// Query functions+
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+
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void CL2CAPProtocol::Identify(TServerProtocolDesc *aDesc)const+
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//+
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// Identify request from SOCKET server+
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//+
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	{+
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	LOG_FUNC+
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	CL2CAPProtocol::ProtocolIdentity(aDesc);+
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	}+
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+
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void CL2CAPProtocol::ProtocolIdentity(TServerProtocolDesc* aDesc)+
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	{+
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	LOG_STATIC_FUNC+
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	_LIT(name,"L2CAP");+
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	aDesc->iProtocol=KL2CAP;+
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	aDesc->iName=name;+
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	aDesc->iAddrFamily=KBTAddrFamily;+
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	aDesc->iSockType=KSockSeqPacket;+
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	+
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	aDesc->iVersion=TVersion(KBTMajor,KBTMinor,KBTBuild);+
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	aDesc->iByteOrder=ELittleEndian;+
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	aDesc->iServiceInfo=KL2CAPSeqPacketServiceInfo;+
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	aDesc->iNamingServices=0;+
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	aDesc->iSecurity=KSocketNoSecurity;+
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	aDesc->iMessageSize=KSocketMessageSizeNoLimit; //This is the MAX packet size.+
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	aDesc->iServiceTypeInfo=ESocketSupport|ETransport|EPreferMBufChains|ENeedMBufs|EUseCanSend;+
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	aDesc->iNumSockets=KL2CAPSockets;+
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	}+
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+
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void CL2CAPProtocol::CloseNow()+
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/**+
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	Close command from base class.+
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	Called when ref count reaches 0.+
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	We don't actually have to close now, but when we finally+
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	do, we must call CanClose (done within TryToClose). That will+
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	actually delete us. In the mean time, if a new client tries+
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	to connect to L2CAP, the socket will use this existing one and just+
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	call Open on it.+
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	What we do here, is queue an idle timer entry. It's expiry will+
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	call TryToClose, which will actually do the close.+
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**/+
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	{+
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	LOG_FUNC+
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	iClosePending = ETrue;+
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	QueIdleTimerEntry();+
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	}+
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+
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void CL2CAPProtocol::Open()+
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/**+
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	Open L2CAP protocol.+
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	Called every time a new client (of L2CAP) wants to use it.+
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**/+
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	{+
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	LOG_FUNC+
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	iClosePending = EFalse;+
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	RemoveIdleTimerEntry();+
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	CProtocolBase::Open();+
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	}+
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+
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void CL2CAPProtocol::Close()+
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	{+
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	LOG_FUNC+
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	CProtocolBase::Close();+
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	}+
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+
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void CL2CAPProtocol::QueIdleTimerEntry()+
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/**+
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	Queue idle timer entry.+
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	When this timer expires, it'll call TryToClose, which actually+
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	causes the thing to finally close down.+
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**/+
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	{+
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	LOG_FUNC+
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	RemoveIdleTimerEntry();+
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	iIdleEntryQueued = ETrue;+
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	BTSocketTimer::Queue(KL2ProtocolIdleTimeout*KL2ProtocolSecondTimerMultiplier, iIdleTimerEntry);+
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	}+
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+
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void CL2CAPProtocol::RemoveIdleTimerEntry()+
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/**+
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	Called whenever we're opened.+
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	Checks there are no idle timer entries queued.+
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**/+
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	{+
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	LOG_FUNC+
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	if (!iIdleEntryQueued)+
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		return;+
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	BTSocketTimer::Remove(iIdleTimerEntry);+
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	iIdleEntryQueued = EFalse;+
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	}+
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+
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void CL2CAPProtocol::TryToClose()+
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	{+
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	LOG_FUNC+
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	if (!iIdleEntryQueued && iClosePending && MuxController().CanProtocolClose())+
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		{+
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		CanClose();+
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		}+
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	}+
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+
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TInt CL2CAPProtocol::TryToClose(TAny* aProtocol)+
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/*+
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	Actually try to close the protocol.+
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	Called after the idle timeout period by the BTSocketTimer. If+
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	we're all set to close down, the thing is closed.+
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*/+
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	{+
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	LOG_STATIC_FUNC+
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	CL2CAPProtocol* p=static_cast<CL2CAPProtocol*>(aProtocol);+
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	p->iIdleEntryQueued = EFalse;+
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	p->TryToClose();+
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	return EFalse;+
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	}+
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+
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CL2CAPSAPStateFactory& CL2CAPProtocol::StateFactory() const+
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	{+
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	LOG_FUNC+
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	return *iStateFactory;+
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	}+
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+
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CL2CAPSignalStateFactory& CL2CAPProtocol::SigStateFactory() const+
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	{+
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	LOG_FUNC+
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	return *iSigStateFactory;+
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	}+
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+
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TInt CL2CAPProtocol::BearerConnectComplete(const TBTDevAddr& aAddr, CServProviderBase* aSAP)+
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	{+
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	LOG_FUNC+
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	return iMuxController->BearerConnectComplete(aAddr, aSAP);+
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	}+
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+
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const TBTDevAddr& CL2CAPProtocol::LocalBTAddr() const+
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	{+
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	LOG_FUNC+
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	return static_cast<CLinkMgrProtocol*>(iLowerProtocol)->LocalBTAddress();+
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	}+
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+
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TInt CL2CAPProtocol::StartProtocolListening()+
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// forward L2CAPs listening requirements to listener+
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	{+
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	LOG_FUNC+
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	return CBluetoothProtocolBase::StartListening(EACLPortL2CAP,+
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												  KSockBluetoothTypeACL,+
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												  KL2CAPIncomingConnQueueSize,+
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												  KUidServiceL2CAP);+
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	}+
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+
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+
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