ServerKeepAliveHandler.cpp

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////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    Scorched3D 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 General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

#include <server/ServerKeepAliveHandler.h>
#include <server/ServerChannelManager.h>
#include <server/ServerCommon.h>
#include <server/ScorchedServer.h>
#include <common/Logger.h>
#include <common/OptionsScorched.h>
#include <tank/TankContainer.h>
#include <coms/ComsKeepAliveMessage.h>
#include <time.h>

ServerKeepAliveHandler *ServerKeepAliveHandler::instance_ = 0;

ServerKeepAliveHandler *ServerKeepAliveHandler::instance()
{
        if (!instance_)
        {
                instance_ = new ServerKeepAliveHandler;
        }
        return instance_;
}

ServerKeepAliveHandler::ServerKeepAliveHandler()
{
        ScorchedServer::instance()->getComsMessageHandler().addHandler(
                "ComsKeepAliveMessage",
                this);
}

ServerKeepAliveHandler::~ServerKeepAliveHandler()
{
}

bool ServerKeepAliveHandler::processMessage(NetMessage &message,
        const char *messageType, NetBufferReader &reader)
{
        return true;
}

void ServerKeepAliveHandler::keepAlive(unsigned int destinationId)
{
        unsigned int theTime = (unsigned int) time(0);

        std::map<unsigned int, Tank *> &tanks =
                ScorchedServer::instance()->getTankContainer().getPlayingTanks();
        std::map<unsigned int, Tank *>::iterator itor;
        for (itor = tanks.begin();
                itor != tanks.end();
                itor++)
        {
                Tank *current = (*itor).second;
                if (current->getDestinationId() == destinationId)
                {
                        current->setKeepAlive(theTime);
                }
        }
}

void ServerKeepAliveHandler::checkKeepAlives()
{
        unsigned int allowedTime = (unsigned int)
                ScorchedServer::instance()->getOptionsGame().getKeepAliveTimeoutTime();
        if (allowedTime == 0) return;

        unsigned int theTime = (unsigned int) time(0);

        std::map<unsigned int, Tank *> &tanks =
                ScorchedServer::instance()->getTankContainer().getPlayingTanks();
        std::map<unsigned int, Tank *>::iterator itor;
        for (itor = tanks.begin();
                itor != tanks.end();
                itor++)
        {
                Tank *current = (*itor).second;
                if (current->getDestinationId() != 0)
                {
                        if (current->getKeepAlive() != 0 &&
                                theTime - current->getKeepAlive()  > allowedTime)
                        {
                                ServerChannelManager::instance()->sendText(
                                        ChannelText("info",
                                                "KEEPALIVE_KICK",
                                                "\"{0}\" Kicked for exceeding keep alive timeout ({1} seconds)",
                                                current->getTargetName(),
                                                theTime - current->getKeepAlive()),
                                        true);

                                ServerCommon::kickDestination(current->getDestinationId());

                                // To give more time until we repeat this message
                                current->setKeepAlive(0); 
                                break; // As now the tank container may be out of date
                        }
                }
        }
}

---