--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/serialserver/c32serialserver/SCOMM/CS_V02.CPP	Thu Dec 17 09:22:25 2009 +0200
@@ -0,0 +1,589 @@
+// Copyright (c) 1997-2009 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
+ *
+ * Implements the v2 extensions of CPort
+ */
+
+#include "CS_STD.H"
+#include "C32LOG.H"
+
+void CPort::CommNotifySignalChange(const RMessage2& aMessage, CCommSession* aClient)
+/**
+ * Set DCE/DTE signal notifying on
+ *
+ * @param aMessage handle to the IPC message from the client
+ * @param aClient pointer to the Comm session
+ */
+	{ 
+	C32LOG2(KC32Player, _L8("CPort::CommNotifySignalChange(), Client 0x%x"), aClient);
+	if (TakeOwnershipForSignals(aMessage,aClient))
+		{
+		iBlockedSignalChange=aMessage;
+		if (aMessage.Int1()>0)
+			{
+			// We give signal mask as a parameter
+			NotifySignalChange(aMessage.Int1());
+			}
+		else
+			{
+			// Bad signal mask, we give up.
+			SafeComplete(aMessage, KErrArgument);
+			}
+		}	
+	else if (aClient!=iSignalOwner)
+		{
+		SafeComplete(aMessage, KErrInUse);
+		}
+	}
+
+
+EXPORT_C void CPort::SignalChangeCompleted(const TUint& aSignals, TInt aError)
+/** Tells the comms server that a request initiated through NotifySignalChange() 
+is complete. 
+
+The comms server will then notify the client that its request is complete. 
+
+Called by the CSY module.
+	
+@param aSignals The new signals value to pass to the client. 
+@param anError An error code. */
+	{
+	C32LOG1(KC32Player, _L8("CPort::SignalChangeCompleted()"));
+	if (iSignalOwner)
+		{
+		if (aError!=KErrCancel)
+			{
+			TPtr8 sigDes((TUint8*)&aSignals,sizeof(TUint),sizeof(TUint));
+			TInt ret = iSignalOwner->Write(0,iBlockedSignalChange,sigDes);
+			if (ret!=KErrNone)
+				{
+				aError=ret;
+				}
+			}
+		SafeComplete(iBlockedSignalChange, aError);
+		}
+	iSignalOwner = 0;
+	}
+
+
+TBool CPort::TakeOwnershipForSignals(const RMessage2& aMessage, CCommSession* aClient)
+/**
+ * We check that signal notifying is not called twice at the same time
+ *
+ * @param aClient pointer to the Comm session
+ * @return ETrue if not owner, EFalse if owner
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::TakeOwnershipForSignals(), Client 0x%x"), aClient);
+	if (!iSignalOwner)
+		{
+		iSignalOwner=aClient;
+		iSignalOwnerHandle=aMessage.Int3();
+		return ETrue;
+		}
+	else
+		{
+		if (aClient==iSignalOwner)
+			{
+			PanicClient(ENotifySignalTwice,aMessage);
+			}
+		return EFalse;
+		}
+	}
+
+
+void CPort::CommNotifySignalChangeCancel(TInt aHandle, CCommSession* aClient)
+/**
+ * Cancel outstanding signal notification
+ *
+ * @param aHandle Handle to the session
+ * @param aClient pointer to the Comm session
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::CommNotifySignalChangeCancel(), Client 0x%x"), aClient);
+	if (iSignalOwner==aClient && (!aHandle || aHandle==iSignalOwnerHandle))
+		{
+		NotifySignalChangeCancel();
+		SignalChangeCompleted(0,KErrCancel);
+		}
+	}
+
+
+void CPort::CommNotifyFlowControlChange(const RMessage2& aMessage, CCommSession* aClient)
+/**
+ * Set flow control notifying on
+ *
+ * @param aMessage handle to the IPC message from the client
+ * @param aClient pointer to the Comm session
+ */
+	{ 
+	C32LOG2(KC32Player, _L8("CPort::CommNotifyFlowControlChange(), Client 0x%x"), aClient);
+	if (TakeOwnershipForFlowControl(aMessage,aClient))
+		{
+		iBlockedFlowControlChange = aMessage;
+		NotifyFlowControlChange();
+		}	
+	else if(aClient!= iFlowControlOwner)
+		{
+		SafeComplete(aMessage, KErrInUse);
+		}
+	}
+
+
+EXPORT_C void CPort::FlowControlChangeCompleted(const TFlowControl& aFlowControl, TInt aError)
+/** Tells the comms server that a request initiated through NotifyFlowControlChange() 
+is complete. 
+
+The comms server will then notify the client that its request is complete. 
+
+Called by the CSY module.
+	
+@param aFlowControl Flow control to pass to client 
+@param anError Error code */
+	{
+	C32LOG1(KC32Player, _L8("CPort::FlowControlChangeCompleted()"));
+	if (iFlowControlOwner)
+		{
+		if (aError!=KErrCancel)
+			{
+			TPckg<TFlowControl> len(aFlowControl);
+			TInt ret = iFlowControlOwner->Write(0,iBlockedFlowControlChange,len,0);
+			if (ret!=KErrNone)
+				{
+				aError=ret;
+				}
+			}
+		SafeComplete(iBlockedFlowControlChange, aError);
+		}		
+	iFlowControlOwner = 0;
+	}
+
+
+TBool CPort::TakeOwnershipForFlowControl(const RMessage2& aMessage,CCommSession* aClient)
+/**
+ * We check that flowcontrol notifying is not called twice at the same time
+ *
+ * @param aClient pointer to the Comm session
+ * @return ETrue if not owner, EFalse if owner
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::TakeOwnershipForFlowControl(), Client 0x%x"), aClient);
+	if (!iFlowControlOwner)
+		{
+		iFlowControlOwner=aClient;
+		iFlowControlOwnerHandle=aMessage.Int3();
+		return ETrue;
+		}
+	else
+		{
+		if (aClient==iFlowControlOwner)
+			{
+			PanicClient(ENotifyFlowControlTwice,aMessage);
+			}
+		return EFalse;
+		}
+	}
+
+
+void CPort::CommNotifyFlowControlChangeCancel(TInt aHandle, CCommSession* aClient)
+/**
+ * Cancel outstanding flow control notification
+ *
+ * @param aHandle Handle to the session
+ * @param aClient pointer to the Comm session
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::CommNotifyFlowControlChangeCancel(), Client 0x%x"), aClient);
+	if (iFlowControlOwner==aClient && (!aHandle || aHandle==iFlowControlOwnerHandle))
+		{
+		NotifyFlowControlChangeCancel();
+		FlowControlChangeCompleted((TFlowControl)0,KErrCancel);
+		}
+	}
+
+
+void CPort::CommNotifyConfigChange(const RMessage2& aMessage, CCommSession* aClient)
+/**
+ * Set configuration change (data format, speed, ...) notifying on
+ *
+ * @param aMessage handle to the IPC message from the client
+ * @param aClient pointer to the Comm session
+ */
+	{ 
+	C32LOG2(KC32Player, _L8("CPort::CommNotifyConfigChange(), Client 0x%x"), aClient);
+	if (TakeOwnershipForConfig(aMessage,aClient))
+		{
+		iBlockedConfigChange=aMessage;
+		NotifyConfigChange();
+		}	
+	else if(aClient!=iConfigOwner)
+		SafeComplete(aMessage, KErrInUse);
+	}
+
+
+EXPORT_C void CPort::ConfigChangeCompleted(const TDesC8& aNewConfig, TInt aError)
+/** Tells the comms server that a request initiated through NotifyConfigChange() 
+is complete. 
+
+The comms server will then notify the client that its request is complete. 
+	
+Called by the CSY module.
+	
+@param aNewConfig Configuration value to pass to client 
+@param anError Error code */
+	{
+	C32LOG1(KC32Player, _L8("CPort::ConfigChangeCompleted()"));
+	if (iConfigOwner)
+		{
+		if (aError!=KErrCancel)
+			{
+			TInt ret = iConfigOwner->Write(0,iBlockedConfigChange,aNewConfig);
+			if (ret!=KErrNone)
+				aError=ret;
+			}
+		SafeComplete(iBlockedConfigChange, aError);
+		}
+	iConfigOwner = 0;
+	}
+
+
+TBool CPort::TakeOwnershipForConfig(const RMessage2& aMessage,CCommSession* aClient)
+/**
+ * We check that config change notifying is not called twice at the same time
+ *
+ * @param aClient pointer to the Comm session
+ * @return ETrue if not owner, EFalse if owner
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::TakeOwnershipForConfig(), Client 0x%x"), aClient);
+	if (!iConfigOwner)
+		{
+		iConfigOwner=aClient;
+		iConfigOwnerHandle=aMessage.Int3();
+		return ETrue;
+		}
+	else
+		{
+		if (aClient==iConfigOwner)
+			PanicClient(ENotifyConfigTwice,aMessage);
+		return EFalse;
+		}
+	}
+
+
+void CPort::CommNotifyConfigChangeCancel(TInt aHandle, CCommSession* aClient)
+/**
+ * Cancel outstanding configuration change notification
+ *
+ * @param aHandle Handle to the session
+ * @param aClient pointer to the Comm session
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::CommNotifyConfigChangeCancel(), Client 0x%x"), aClient);
+	if (iConfigOwner==aClient && (!aHandle || aHandle==iConfigOwnerHandle))
+		{
+		NotifyConfigChangeCancel();
+		TPtr8 dummy(NULL,0,0);
+		ConfigChangeCompleted(dummy,KErrCancel);
+		}
+	}
+
+
+void CPort::CommNotifyBreak(const RMessage2& aMessage, CCommSession* aClient)
+/**
+ * Set break signal notifying on
+ *
+ * @param aMessage handle to the IPC message from the client
+ * @param aClient pointer to the Comm session
+ */
+	{ 
+	C32LOG2(KC32Player, _L8("CPort::CommNotifyBreak(), Client 0x%x"), aClient);
+	if (TakeOwnershipForBreak(aMessage,aClient))
+		{
+		iBlockedBreakNotify=aMessage;
+		NotifyBreak();
+		}
+	else if(aClient!=iBreakNotifyOwner)
+		SafeComplete(aMessage, KErrInUse);		
+	}
+
+
+EXPORT_C void CPort::BreakNotifyCompleted(TInt aError)
+/** Tells the comms server that a request initiated through NotifyBreak()
+is complete. 
+
+The comms server will then notify the client that its request is complete. 
+	
+Called by the CSY module.
+	
+@param anError Error code */
+	{
+	C32LOG1(KC32Player, _L8("CPort::BreakNotifyCompleted()"));
+	if (iBreakNotifyOwner)
+		SafeComplete(iBlockedBreakNotify, aError);		
+	iBreakNotifyOwner = 0;
+	}
+
+
+TBool CPort::TakeOwnershipForBreak(const RMessage2& aMessage,CCommSession* aClient)
+/**
+ * We check that break notifying is not called twice at the same time
+ *
+ * @param aClient pointer to the Comm session
+ * @return ETrue if not owner, EFalse if owner
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::TakeOwnershipForBreak(), Client 0x%x"), aClient);
+	if (!iBreakNotifyOwner)
+		{
+		iBreakNotifyOwner=aClient;
+		iBreakNotifyOwnerHandle=aMessage.Int3();
+		return ETrue;
+		}
+	else
+		{
+		if (aClient==iBreakNotifyOwner)
+			PanicClient(ENotifyBreakTwice,aMessage);
+		return EFalse;
+		}
+	}
+
+
+void CPort::CommNotifyBreakCancel(TInt aHandle, CCommSession* aClient)
+/**
+ * Cancel outstanding break notification
+ *
+ * @param aHandle Handle to the session
+ * @param aClient pointer to the Comm session
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::CommNotifyBreakCancel(), Client 0x%x"), aClient);
+	if (iBreakNotifyOwner==aClient && (!aHandle || aHandle==iBreakNotifyOwnerHandle))
+		{
+		NotifyBreakCancel();
+		BreakNotifyCompleted(KErrCancel);
+		}
+	}
+
+
+void CPort::CommNotifyDataAvailable(const RMessage2& aMessage, CCommSession* aClient)
+/**
+ * Set input buffer data notifying on
+ *
+ * @param aMessage handle to the IPC message from the client
+ * @param aClient pointer to the Comm session
+ */
+	{ 
+	C32LOG2(KC32Player, _L8("CPort::CommNotifyDataAvailable(), Client 0x%x"), aClient);
+	if (TakeOwnershipForNotifyDataAvailable(aMessage,aClient))
+		{
+		iBlockedNotifyDataAvailable=aMessage;
+		NotifyDataAvailable();
+		}
+	else if(aClient!=iNotifyDataAvailableOwner)
+		SafeComplete(aMessage, KErrInUse);		
+	}
+
+
+EXPORT_C void CPort::NotifyDataAvailableCompleted(TInt aError)
+/** Tells the comms server that a request initiated through NotifyDataAvailable() 
+is complete. 
+
+The comms server will then notify the client that its request is complete. 
+
+Called by the CSY module.
+	
+@param anError Error code */
+	{
+	C32LOG1(KC32Player, _L8("CPort::NotifyDataAvailableCompleted()"));
+	if (iNotifyDataAvailableOwner)
+		SafeComplete(iBlockedNotifyDataAvailable, aError);
+	iNotifyDataAvailableOwner = 0;
+	}
+
+
+TBool CPort::TakeOwnershipForNotifyDataAvailable(const RMessage2& aMessage,CCommSession* aClient)
+/**
+ * We check that input buffer data notifying is not called twice at the same time
+ *
+ * @param aClient pointer to the Comm session
+ * @return ETrue if not owner, EFalse if owner
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::TakeOwnershipForNotifyDataAvailable(), Client 0x%x"), aClient);
+	if (!iNotifyDataAvailableOwner)
+		{
+		iNotifyDataAvailableOwner=aClient;
+		iNotifyDataAvailableOwnerHandle=aMessage.Int3();
+		return ETrue;
+		}
+	else
+		{
+		if (aClient==iNotifyDataAvailableOwner)
+			PanicClient(ENotifyDataAvailableTwice,aMessage);
+		return EFalse;
+		}
+	}
+
+
+void CPort::CommNotifyDataAvailableCancel(TInt aHandle, CCommSession* aClient)
+/**
+ * Cancel outstanding input buffer data notification
+ *
+ * @param aHandle Handle to the session
+ * @param aClient pointer to the Comm session
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::CommNotifyDataAvailableCancel(), Client 0x%x"), aClient);
+	if (iNotifyDataAvailableOwner==aClient && (!aHandle || aHandle==iNotifyDataAvailableOwnerHandle))
+		{
+		NotifyDataAvailableCancel();
+		NotifyDataAvailableCompleted(KErrCancel);
+		}
+	}
+
+
+void CPort::CommNotifyOutputEmpty(const RMessage2& aMessage, CCommSession* aClient)
+/**
+ * Set output buffer empty notifying on
+ *
+ * @param aMessage handle to the IPC message from the client
+ * @param aClient pointer to the Comm session
+ */
+	{ 
+	C32LOG2(KC32Player, _L8("CPort::CommNotifyOutputEmpty(), Client 0x%x"), aClient);
+	if (TakeOwnershipForNotifyOutputEmpty(aMessage,aClient))
+		{
+		iBlockedNotifyOutputEmpty=aMessage;
+		NotifyOutputEmpty();
+		}
+	else if(aClient!=iNotifyOutputEmptyOwner)
+		SafeComplete(aMessage, KErrInUse);
+	}
+
+
+EXPORT_C void CPort::NotifyOutputEmptyCompleted(TInt aError)
+/** Tells the comms server that a request initiated through NotifyOutputEmpty() 
+is complete. 
+
+The comms server will then notify the client that its request is complete. 
+
+Called by the CSY module.
+	
+@param anError Error code */
+	{
+	C32LOG1(KC32Player, _L8("CPort::NotifyOutputEmptyCompleted()"));
+	if (iNotifyOutputEmptyOwner)
+		SafeComplete(iBlockedNotifyOutputEmpty, aError);
+	iNotifyOutputEmptyOwner = 0;
+	}
+
+
+TBool CPort::TakeOwnershipForNotifyOutputEmpty(const RMessage2& aMessage,CCommSession* aClient)
+/**
+ * We check that output buffer empty notifying is not called twice at the same time
+ *
+ * @param aClient pointer to the Comm session
+ * @return ETrue if not owner, EFalse if owner
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::TakeOwnershipForNotifyOutputEmpty(), Client 0x%x"), aClient);
+	if (!iNotifyOutputEmptyOwner)
+		{
+		iNotifyOutputEmptyOwner=aClient;
+		iNotifyOutputEmptyOwnerHandle=aMessage.Int3();
+		return ETrue;
+		}
+	else
+		{
+		if (aClient==iNotifyOutputEmptyOwner)
+			PanicClient(ENotifyOutputTwice,aMessage);
+		return EFalse;
+		}
+	}
+
+
+void CPort::CommNotifyOutputEmptyCancel(TInt aHandle, CCommSession* aClient)
+/**
+ * Cancel outstanding output buffer empty notification
+ *
+ * @param aHandle Handle to the session
+ * @param aClient pointer to the Comm session
+ */
+	{
+	C32LOG2(KC32Player, _L8("CPort::CommNotifyOutputEmptyCancel(), Client 0x%x"), aClient);
+	if (iNotifyOutputEmptyOwner==aClient && (!aHandle || aHandle==iNotifyOutputEmptyOwnerHandle))
+		{
+		NotifyOutputEmptyCancel();
+		NotifyOutputEmptyCompleted(KErrCancel);
+		}
+	}
+
+
+void CPort::CommGetRole(const RMessage2& aMessage, CCommSession* aClient)
+/**
+ * Get role DCE/DTE from CSY module
+ *
+ * @param aMessage handle to the IPC message from the client
+ * @param aClient pointer to the Comm session
+ */
+	{
+	(void)aClient;		// to disable urel warnings
+	C32LOG2(KC32Player, _L8("CPort::CommGetRole(), Client 0x%x"), aClient);
+	TCommRole tempRole;
+	TInt ret=GetRole(tempRole);
+	TPckg<TCommRole> len(tempRole);
+	if (ret==KErrNone)
+		{
+		ret = aMessage.Write(0, len, 0);
+		if (ret!=KErrNone)
+			{
+			PanicClient(EBadDescriptor,aMessage);
+			}
+		}
+	SafeComplete(aMessage, ret);
+	}
+
+
+void CPort::CommGetFlowControlStatus(const RMessage2& aMessage, CCommSession* aClient)
+/**
+ * Get flow control state ON/OFF from CSY module
+ *
+ * @param aMessage handle to the IPC message from the client
+ * @param aClient pointer to the Comm session
+ */
+	{
+	(void)aClient;		// to disable urel warnings
+	C32LOG2(KC32Player, _L8("CPort::CommGetFlowControlStatus(), Client 0x%x"), aClient);
+	TFlowControl tempFlow;
+	TPckg<TFlowControl> len(tempFlow);
+	TInt ret=GetFlowControlStatus(tempFlow);
+	if (ret==KErrNone)
+		{
+		ret = aMessage.Write(0, len, 0);
+		if (ret!=KErrNone)
+			{
+			PanicClient(EBadDescriptor,aMessage);
+			}
+		}
+	SafeComplete(aMessage, ret);
+	}
+
+
+// EOF - CS_V02.CPP