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PostroutingChain.cpp

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/*******************************************************************************
 * This file is part of openWNS (open Wireless Network Simulator)
 * _____________________________________________________________________________
 *
 * Copyright (C) 2004-2007
 * Chair of Communication Networks (ComNets)
 * Kopernikusstr. 5, D-52074 Aachen, Germany
 * phone: ++49-241-80-27910,
 * fax: ++49-241-80-22242
 * email: info@openwns.org
 * www: http://www.openwns.org
 * _____________________________________________________________________________
 *
 * openWNS is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 2 as published by the
 * Free Software Foundation;
 *
 * openWNS is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
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#include <IP/iptables/PostroutingChain.hpp>

using namespace ip::iptables;

STATIC_FACTORY_REGISTER_WITH_CREATOR(
    PostroutingChain,
    wns::ldk::FunctionalUnit,
    "ip.iptables.postroutingchain",
    wns::ldk::FUNConfigCreator);


PostroutingChain::PostroutingChain(wns::ldk::fun::FUN* fun, const wns::pyconfig::View& _pyco):
    Chain(fun, _pyco),
    wns::Cloneable<PostroutingChain>(),
    dllFlowIDTarget(NULL)
{
}

void
PostroutingChain::onFlowRemoved(wns::service::dll::FlowID flowID)
{
    if(hasRules(flowID))
    {
        removeRules(flowID);
        removeFromDLLFlowIDTarget(flowID);
    }
    else
    {
        //rules are created when a packet with its Ruletag (flowID) arrive.
        //if no packet has ever arrived with this flowID there will be no Rule
        //with this RUletag (flowID)!!

        MESSAGE_BEGIN(NORMAL, log, m, "");
        m << "Warning! There are no Rules with this RuleTag: " << flowID;
        MESSAGE_END();
    }
}

void
PostroutingChain::registerDLLFlowIDTarget(targets::DLLFlowIDTarget* target)
{
    dllFlowIDTarget = target;
    assure(dllFlowIDTarget, "dllFlowIDTarget not set.");
}

void
PostroutingChain::removeFromDLLFlowIDTarget(wns::service::dll::FlowID flowID)
{
    dllFlowIDTarget->ruleErased(flowID);
}

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