tcpiputils/dhcp/src/DHCPIP4ServerControl.cpp
author hgs
Mon, 13 Sep 2010 16:12:41 +0530
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permissions -rw-r--r--
201035_04
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// Copyright (c) 2007-2009 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 DHCP IP4 Server control class which controls the upper states
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// The Upper state machine for DHCP server are
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// - Wait For Discover or Inform
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// - Wait For Discover / release / decline / renew and rebind request msgs
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// 
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//
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/**
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 @file DHCPIP4ServerControl.cpp
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 @internalTechnology
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*/
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#include "DHCPIP4ServerControl.h"
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#include "DHCPIP4Msg.h"
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#include "DHCPDb.h"
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#include "ExpireTimer.h"
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#include "DHCPConfigListener.h"
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#include "DHCPStatesDebug.h"
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//Dns proxy related includes
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#ifdef SYMBIAN_DNS_PROXY
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#include <dnsproxyupdateif.h>
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#endif // SYMBIAN_DNS_PROXY
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CDHCPIP4ServerControl::~CDHCPIP4ServerControl()
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	{	
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#ifdef SYMBIAN_DNS_PROXY
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    __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("CDHCPIP4ServerControl::~CDHCPIP4ServerControl()")));
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    iDnsProxySession.Close();
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    delete iDnsProxyPlugin;
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#endif // SYMBIAN_DNS_PROXY
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	}
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void CDHCPIP4ServerControl::ConfigureL(const TConnectionInfo& aInfo, const RMessage2* aMessage)
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/**
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  * Open and attach to the RConnection
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  *
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  * @internalTechnology
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  */
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	{
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#ifdef SYMBIAN_DNS_PROXY
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	//configure Dns Proxy Server
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	ConfigureDnsProxyL(aMessage);
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#endif // SYMBIAN_DNS_PROXY
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	// use the base class functionality
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	CDHCPIP4Control::ConfigureL(aInfo,aMessage);
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	// bind the server socket with the static IP address from Comms database
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	// we use a bind state  for server to implement timer and continue in the bind state
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	// unless the tcpip6 is successful in binding the socket with the IP address
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	iDhcpStateMachine->InitServerBinding(this);
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	iDhcpStateMachine->iSvrState = ESvrBinding;
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	iDhcpStateMachine->SetServerState(ETrue);
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#ifdef SYMBIAN_DNS_PROXY
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	//read DNS proxy entries from database.should not leave even if host name is not available
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	TRAPD(err,iDhcpDb->ReadHostNameL(*iDhcpStateMachine));
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	if(err!= KErrNone)
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		{
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		__CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("CDHCPIP4ServerControl::ConfigureL().Host name not found")));
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		}
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	if(iDhcpStateMachine->iProxyDomainName.Length())
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	    {
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	    TRequestStatus aStatus;
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		iDnsProxySession.UpdateDomainName(iDhcpStateMachine->iProxyDomainName, aStatus);
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	    User::WaitForRequest(aStatus);
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	    }
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#endif // SYMBIAN_DNS_PROXY
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	}
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void CDHCPIP4ServerControl::TimerExpired()
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/**
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  * Called by the timer to signal that the timer has expired
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  *
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  * @internalTechnology
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  */
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	{
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	__CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("CDHCPIP4ServerControl::TimerExpired()")));
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	iDhcpStateMachine->Cancel();
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	iDhcpStateMachine->InitServerStateMachineL(this);
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	// bind the socket with the session
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	iDhcpStateMachine->BindServerInterface();
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	// There is a only rebind timer for this simplified DHCP Server implementation
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	// After the discover or renew-request a timer until the rebind time is run
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	// We service only a single client and the server does not check if the client
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	// failed with DAD. Hence if the timer expired after rebind timer then we know we
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	// no longer service any client , so we go back to original state (ESvrWaitForDiscoverInform)
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	if(iDhcpStateMachine->iSvrState == ESvrWaitForAnyDHCPMsgs)
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		{
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	   	iDhcpStateMachine->iSvrState = ESvrWaitForDiscoverInform;
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		}
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	else
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		{
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parents:
diff changeset
   114
		_LIT(KDhcpPanicReason, "Timer expired in unexpected state");
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parents:
diff changeset
   115
		User::Panic(KDhcpPanicReason, KErrNotSupported);
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parents:
diff changeset
   116
		}
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parents:
diff changeset
   117
	}
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parents:
diff changeset
   118
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parents:
diff changeset
   119
void CDHCPIP4ServerControl::TaskCompleteL(TInt aError)
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parents:
diff changeset
   120
	{
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parents:
diff changeset
   121
	__CFLOG_VAR((KLogSubSysDHCP, KLogCode,
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parents:
diff changeset
   122
		         _L8("CDHCPIP4ServerControl::TaskCompleteL (%d) with error = %d") ,
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parents:
diff changeset
   123
		         iDhcpStateMachine->iSvrState, aError));
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parents:
diff changeset
   124
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parents:
diff changeset
   125
	// cancel possibly working message sender & socket activity
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parents:
diff changeset
   126
	// and delete current states cancels the timer
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parents:
diff changeset
   127
	iDhcpStateMachine->Cancel();
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parents:
diff changeset
   128
	iTimer->Cancel();
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parents:
diff changeset
   129
	// we re-intialise the server state to wait for next message (in any state)
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parents:
diff changeset
   130
	iDhcpStateMachine->InitServerStateMachineL(this);
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parents:
diff changeset
   131
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parents:
diff changeset
   132
	if ( aError == KErrServerTerminated )
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parents:
diff changeset
   133
		{
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parents:
diff changeset
   134
		__CFLOG_VAR((KLogSubSysDHCP, KLogCode,
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   135
		         _L8("CDHCPServerControl::TaskCompleteL server terminated => complete client request & going to idle")));
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   136
		iDhcpStateMachine->iSvrState = ESvrEnd;
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parents:
diff changeset
   137
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parents:
diff changeset
   138
		CompleteServerConfigureMessage(aError);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   139
		CompleteServerIoctlMessage(aError);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   140
		// we cant wait for client messages any more as the server has terminated
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   141
		return;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   142
		}
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   143
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   144
	switch (iDhcpStateMachine->iSvrState)
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   145
		{
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   146
		case ESvrBinding:
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   147
			// we are done with binding the server socket, now start waiting for client messages
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   148
			iDhcpStateMachine->iSvrState = ESvrWaitForDiscoverInform;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   149
			if(iDNSRawOption)
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   150
				{
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   151
				TPtr8 ptr = iDNSRawOption->Des();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   152
				iDhcpStateMachine->SetDNSInformation(&ptr);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   153
				}
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   154
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parents:
diff changeset
   155
#ifdef SYMBIAN_DNS_PROXY
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parents:
diff changeset
   156
			//update DNS Proxy database
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   157
			iInterfaceAddr = iDhcpStateMachine->GetListenerAddress();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   158
			iInterfaceAddr.Output(iAddrStr);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   159
			if((iInterfaceAddr.Address()) && (iDhcpStateMachine->iProxyHostName.Length()))
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   160
                {
af10295192d8 Revision: 201004
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parents:
diff changeset
   161
                TRequestStatus aStatus;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   162
                iDnsProxyPlugin->AddDbEntry(iDhcpStateMachine->iProxyHostName, iAddrStr, aStatus);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   163
                User::WaitForRequest(aStatus);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   164
                }
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   165
			iUpdateDnsProxyDb = ETrue;
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   166
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   167
#endif // SYMBIAN_DNS_PROXY
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   168
			break;
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   169
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   170
		case ESvrWaitForDiscoverInform:
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   171
			// some error , go back to intial state (ESvrWaitForDiscoverInform)
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   172
			if (KErrNone != aError)
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   173
				{
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   174
				// some error, reset to intial server state
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   175
				iDhcpStateMachine->iSvrState = ESvrWaitForDiscoverInform;
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   176
				}
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   177
			else
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   178
				{
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   179
				// if inform msg processed, go back to initial state
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   180
				if(iDhcpStateMachine->iSvrSpecificState == ESvrInformInProgress)
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   181
					{
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   182
					iDhcpStateMachine->iSvrState = ESvrWaitForDiscoverInform;
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   183
#ifdef SYMBIAN_DNS_PROXY
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   184
					iDhcpStateMachine->iClientStaticAddr.Output(iAddrStr);
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   185
                    if((iDhcpStateMachine->iClientStaticAddr.Address()) && (iDhcpStateMachine->iClientHostName.Length()))
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   186
                        {
af10295192d8 Revision: 201004
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parents:
diff changeset
   187
                        TRequestStatus aStatus;
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   188
                        iDnsProxyPlugin->AddDbEntry(iDhcpStateMachine->iClientHostName, iAddrStr, aStatus);
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   189
                        User::WaitForRequest(aStatus);
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   190
                        }
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   191
					
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   192
#endif // SYMBIAN_DNS_PROXY
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   193
    				}
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   194
				else
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   195
					{
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   196
					// discover was successful, so we now wait for renew, rebind,release, decline
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   197
					// or a discover msg from another client (just in case)
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   198
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   199
#ifdef SYMBIAN_DNS_PROXY
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   200
					if(iUpdateDnsProxyDb )
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   201
                    	{
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   202
                    	iOfferedAddr.SetAddress(iDhcpStateMachine->iOfferedAddress);
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   203
						iOfferedAddr.Output(iAddrStr);
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   204
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   205
                        if((iOfferedAddr.Address()) && (iDhcpStateMachine->iClientHostName.Length()))
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   206
                            {
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   207
                            TRequestStatus aStatus;
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   208
                            iDnsProxyPlugin->AddDbEntry(iDhcpStateMachine->iClientHostName, iAddrStr, aStatus);
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   209
                            User::WaitForRequest(aStatus);
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   210
                            }
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   211
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   212
						iUpdateDnsProxyDb = EFalse;
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   213
		      	   		}
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   214
#endif // SYMBIAN_DNS_PROXY
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   215
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   216
					iDhcpStateMachine->iSvrState = ESvrWaitForAnyDHCPMsgs;
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   217
					iTimer->After(static_cast<TTimeIntervalSeconds>(KDefaultLeaseTime/2 + KDefaultLeaseTime/4), *this);
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   218
					}
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   219
				iDhcpStateMachine->BindServerInterface();
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   220
				SaveMessageBufferForLaterReference();
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   221
				DHCP_DEBUG_PUBLISH_READY(DHCPDebug::EReady);
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   222
				}
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   223
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   224
			break;
af10295192d8 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   225
		// waiting for any DHCP messages like Discover, Renew and rebind requests,
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		// decline release except inform message
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		case ESvrWaitForAnyDHCPMsgs:
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			if (KErrNone != aError)
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				{
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				//Complete client request with error if there is any
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				CompleteServerIoctlMessage(aError);
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				iDhcpStateMachine->iSvrState = ESvrWaitForAnyDHCPMsgs;
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				}
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			else
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				{
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				switch(iDhcpStateMachine->iSvrSpecificState)
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					{
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				case ESvrDiscoverInProgress:
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				case ESvrRenewInProgress:
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				case ESvrRebindInProgress:
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					iDhcpStateMachine->iSvrState = ESvrWaitForAnyDHCPMsgs;
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					iTimer->After(static_cast<TTimeIntervalSeconds>(KDefaultLeaseTime/2 + KDefaultLeaseTime/4), *this);
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					iDhcpStateMachine->BindServerInterface();
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					SaveMessageBufferForLaterReference();
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					DHCP_DEBUG_PUBLISH_READY(DHCPDebug::EReady);
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					break;
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   249
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				case ESvrReleaseInProgress:
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				case ESvrDeclineInProgress:
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					// go back to intial state, client released ..
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	#ifdef SYMBIAN_DNS_PROXY
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					iDhcpStateMachine->iClientStaticAddr.Output(iAddrStr);
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   256
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					TRequestStatus aStatus;
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					iDnsProxyPlugin->RemoveDbEntry(iAddrStr, aStatus);
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					User::WaitForRequest(aStatus);
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   260
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					iUpdateDnsProxyDb = ETrue;
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	#endif // SYMBIAN_DNS_PROXY
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   263
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					iDhcpStateMachine->iSvrState = ESvrWaitForDiscoverInform;
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					break;
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   266
					}
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   267
				}
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			break;
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   269
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		default: // some unknown state may be, so reset the state to receive any message (<- unlikely)
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			iDhcpStateMachine->iSvrState = ESvrWaitForAnyDHCPMsgs;
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   272
		}
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   273
	}
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   274
	
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   275
#ifdef SYMBIAN_DNS_PROXY	
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void CDHCPIP4ServerControl::ConfigureDnsProxyL(const RMessage2* aMessage)
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	{
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	//load DNS Proxy Server
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    TConnectionInfoBuf configInfo;
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    TRequestStatus aStatus;
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   281
	
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	aMessage->Read(0, configInfo);
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   283
	User::LeaveIfError(iDnsProxySession.Connect());
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   284
	
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   285
	iDnsProxySession.ConfigureDnsProxyServer(configInfo, aStatus);
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   286
    User::WaitForRequest(aStatus);
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   287
	User::LeaveIfError(aStatus.Int());
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   288
	
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   289
	TUid uid = {0x200215F5};  
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   290
	//load proxy plugin  
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   291
    TRAPD(err, iDnsProxyPlugin = CDNSProxyUpdateIf::NewL(uid));
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   292
    User::LeaveIfError(err);
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   293
    }
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   294
    
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   295
#endif // SYMBIAN_DNS_PROXY