// Copyright (c) 2000-2009 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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// Implements the SDP Protocol object+
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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 <btsdp.h>+
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#include "sdp.h"+
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#include "sdpclient.h"+
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#include "sdpnetdb.h"+
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#include "sdpstackutil.h"+
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#include "sdpconsts.h"+
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#include "bt.h"+
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+
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#ifdef __FLOG_ACTIVE+
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_LIT8(KLogComponent, LOG_COMPONENT_SDP);+
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#endif+
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+
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CSdpProtocol::CSdpProtocol(CBTSecMan& aSecMan, RBTControlPlane& aControlPlane, CBTCodServiceMan& aCodMan)+
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	:CBluetoothProtocolBase(aSecMan, aControlPlane, aCodMan),+
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	iClients(_FOFF(CSdpClient, iLink))+
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/** +
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    Protocol Constructor.+
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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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CSdpProtocol::~CSdpProtocol()+
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/** +
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    Protocol Destructor.+
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    We only clean up the signallers as the NetDbProviders are owned by ESOCK and+
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    it is up to it to destroy them.+
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**/+
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	{+
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	LOG_FUNC+
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	while(!iClients.IsEmpty())+
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		{+
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		CSdpClient* c = iClients.First();+
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		c->iLink.Deque();+
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		delete c;+
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		}+
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	if(iLowerProtocol)+
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		iLowerProtocol->Close();  // Matches the bind+
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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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CSdpProtocol* CSdpProtocol::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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	CSdpProtocol* i=new (ELeave) CSdpProtocol(aSecMan, aControlPlane, aCodMan);+
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	return i;+
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	}+
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+
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void CSdpProtocol::InitL(TDesC& /*aTag*/)+
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/**+
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	Pre-binding initialise.+
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	Alloc any stuff we need.+
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+
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	This will only ever be called once during the lifetime of this+
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	protocol.+
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**/+
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	{+
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	LOG_FUNC+
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	// ...nothing required!+
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	}+
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+
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void CSdpProtocol::StartL()+
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/**+
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	Binding complete.+
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**/+
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	{+
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	LOG_FUNC+
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	  // Should check that we're bound now.+
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	__ASSERT_ALWAYS(iLowerProtocol,Panic(ESdpNotBound));+
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	}+
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+
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+
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void CSdpProtocol::BindToL(CProtocolBase* aProtocol)+
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/***+
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    Request by Protocol Mgr to bind to the specified protocol.+
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    We can only be bound to one lower layer protocol, so the function panics+
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    if we are already bound.+
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    @param aProtocol The protocol we need to bind to.+
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**/+
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	{+
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	LOG_FUNC+
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	FTRACE(TBuf<255> tmp(aProtocol->Tag()); +
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		   LOG1(_L("CSdpProtocol::BindToL binding to %S"),+
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				  &tmp));+
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	+
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	if(!iLowerProtocol)+
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		{+
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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!=KL2CAP)+
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			{+
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			User::Leave(KErrBtEskError);+
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			}+
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#endif+
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+
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		iLowerProtocol=static_cast<CBluetoothProtocolBase*>(aProtocol);+
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		iLowerProtocol->BindL(this, KSDPPSM);+
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		iLowerProtocol->Open();+
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		}+
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	else+
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		{+
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	    User::Leave(KErrSdpAlreadyBound);+
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		}+
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	}+
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+
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// Factory functions+
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+
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CNetDBProvdBase* CSdpProtocol::NewNetDatabaseL()+
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/** +
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	Create a new NetDbProvider.+
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	The NetDbProvider returned is owned by the caller -- this protocol will+
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	not clean it up.  esock uses this function to create a new NetDbProvider,+
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	and esock will delete when it is finished with it.+
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**/+
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	{+
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	LOG_FUNC+
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	return CSdpNetDbProvider::NewL(*this);+
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	}+
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+
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// Query functions+
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+
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void CSdpProtocol::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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	ProtocolIdentity(aDesc);+
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	}+
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+
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void CSdpProtocol::ProtocolIdentity(TServerProtocolDesc* aDesc)+
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	{+
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	LOG_STATIC_FUNC+
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	_LIT(name,"SDP");+
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	aDesc->iProtocol=KSDP;+
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+
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	aDesc->iName=name;+
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	aDesc->iAddrFamily=KBTAddrFamily;+
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	aDesc->iSockType=1;	// Bogus... but (debug) esock demands non-zero here.+
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	+
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	aDesc->iVersion=TVersion(KBTMajor,KBTMinor,KBTBuild);+
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	aDesc->iByteOrder=EBigEndian;+
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	aDesc->iServiceInfo=0;+
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	aDesc->iNamingServices=KNSInfoDatabase;+
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	aDesc->iSecurity=0;+
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	aDesc->iMessageSize=KSocketMessageSizeUndefined;+
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	aDesc->iServiceTypeInfo=ECantProcessMBufChains;+
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	aDesc->iNumSockets=1;// Bogus... but (debug) esock demands non-zero here.+
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	}+
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+
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void CSdpProtocol::CloseNow()+
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/**+
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   Our reference is now zero, so start to close.+
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   When SDP server is in place, this'll be far more involved, as we'll+
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   want to hang around to service SDP queries, for some (???) length+
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   of time.+
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   In the mean time, we can just close, as there are now no netdbs left, so+
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   even if any SDP clients are still hanging around, they may as well die.+
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**/+
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	{+
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	LOG_FUNC+
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	iClosePending = ETrue;+
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	TryToClose();+
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	}+
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+
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void CSdpProtocol::Open()+
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/**+
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   Request to open the protocol.+
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   The protocol may be repeatedly opened and closed.  The order of calls is+
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   InitL, [Open *n , Close * n,  CloseNow] * m, CanClose(upcall) etc.+
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**/+
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     {+
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	LOG_FUNC+
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	 iClosePending = EFalse;+
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	 CProtocolBase::Open();+
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     }+
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     +
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void CSdpProtocol::Close()+
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/**+
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   This is one session closing.+
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   Just call default, which decs the ref count.+
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   CloseNow will be called when this hits 0.+
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**/+
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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 CSdpProtocol::TryToClose()+
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 	{+
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	LOG_FUNC+
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 	if (iClosePending && iClients.IsEmpty())+
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 		CanClose();	// delete's us!+
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 	}+
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+
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void CSdpProtocol::GetClient(CSdpNetDbProvider& aNetDbProvider)+
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/**+
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    Find a Client for this NetDbProvider.+
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+
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    When a Client is found, the NetDbProvider is notified via the ClientUp() call.+
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    Note that if there is no existing Client then it will be created+
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    here and the link brought up before the ClientUp() call is made.  This implies+
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    that the ClientUp() call on the NetDbProvider can be synchronous or Asynchronous.+
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    +
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    @param aNetDbProvider  The NetDbProvider that needs a Client.+
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**/+
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	{+
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	LOG_FUNC+
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	CSdpClient* client;+
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	TBool needsL2CAPChannel = EFalse;+
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+
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	client=FindClient(aNetDbProvider.iRemoteDev);+
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	if(!client)+
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		{// Need to create one+
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		needsL2CAPChannel = ETrue;+
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		TRAPD(err, client=CSdpClient::NewL(*this, *iLowerProtocol));+
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		if(err != KErrNone)+
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			{+
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			// Can't create a client, so error the NetDbProvider+
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			aNetDbProvider.Error(err);+
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			return;+
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			}+
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		// Add client to the Q+
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		iClients.AddFirst(*client);+
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		}	+
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	// Take NetDb off the idle Q+
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+
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	// and add it to the client+
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	aNetDbProvider.iClient=client;+
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	client->AddNetDbProvider(aNetDbProvider);+
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+
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	// Bring up the client if needed+
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	if (needsL2CAPChannel)+
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	client->Open(aNetDbProvider.iRemoteDev);  // Will call back through ClientUp()+
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	}+
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+
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CSdpClient* CSdpProtocol::FindClient(const TBTDevAddr& aAddr)+
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/**+
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	Find the existing client for this address.+
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		@return   Pointer to a client for this address, or NULL if it doesn't exist.+
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**/	+
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	{+
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	LOG_FUNC+
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	TDblQueIter<CSdpClient> iter(iClients);+
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	CSdpClient* client;+
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+
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	while(iter)+
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		{+
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		client=iter++;+
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		if(client->iRemoteAddr == aAddr)+
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			{+
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			// We have a client, so return it+
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			return client;+
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			}+
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		}+
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	// No client+
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	return 0;+
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	}+
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+
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void CSdpProtocol::ClientDown(CSdpClient& aClient)+
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	{+
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	LOG_FUNC+
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	aClient.iLink.Deque();+
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	delete &aClient;+
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	TryToClose();+
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	}+
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+
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TInt CSdpProtocol::BearerConnectComplete(const TBTDevAddr& /*aAddr*/, CServProviderBase* /*aSSP*/)+
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	{+
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	LOG_FUNC+
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	// SDP Protocol doesn't do incoming stuff!+
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	Panic(ESdpClientPassiveConnect);+
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	return KErrNotSupported;+
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	}+
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+
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