QTfrontend/netserver.cpp
author displacer
Sun, 04 Feb 2007 22:26:13 +0000
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/*
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 * Hedgewars, a worms-like game
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 * Copyright (c) 2006 Ulyanov Igor <iulyanov@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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 */
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#include "netserver.h"
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#include <QTcpServer>
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#include <QTcpSocket>
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#include <QMessageBox>
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#include <algorithm>
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#include <QDebug>
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const quint16 HWNetServer::ds_port=46631;
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extern char delimeter;
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void HWNetServer::StartServer()
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{
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  IPCServer = new QTcpServer(this);
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  if (!IPCServer->listen(QHostAddress::Any, ds_port)) {
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    QMessageBox::critical(0, tr("Error"),
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			  tr("Unable to start the server: %1.")
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			  .arg(IPCServer->errorString()));
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  }
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  connect(IPCServer, SIGNAL(newConnection()), this, SLOT(NewConnection()));
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}
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void HWNetServer::StopServer()
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{
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  QList<HWConnectedClient*>::iterator it;
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  for(it=connclients.begin(); it!=connclients.end(); ++it) {
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    ClientDisconnect(*it);
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  }
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  IPCServer->close();
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}
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void HWNetServer::NewConnection()
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{
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  QTcpSocket* client = IPCServer->nextPendingConnection();
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  if(!client) return;
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  connclients.push_back(new HWConnectedClient(this, client));
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  connect(connclients.back(), SIGNAL(HWClientDisconnected(HWConnectedClient*)),
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	  this, SLOT(ClientDisconnect(HWConnectedClient*)));
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}
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void HWNetServer::ClientDisconnect(HWConnectedClient* client)
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{
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  QList<HWConnectedClient*>::iterator it=std::find(connclients.begin(), connclients.end(), client);
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  if(it==connclients.end()) return;
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  for(QList<QStringList>::iterator tmIt=(*it)->m_teamsCfg.begin(); tmIt!=(*it)->m_teamsCfg.end(); ++tmIt) {
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    sendOthers(*it, QString("REMOVETEAM:")+delimeter+*(tmIt->begin()) + delimeter + *(tmIt->begin()+1));
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  }
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  connclients.erase(it);
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  //teamChanged();
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}
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QString HWNetServer::getRunningHostName() const
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{
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  return IPCServer->serverAddress().toString();
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}
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quint16 HWNetServer::getRunningPort() const
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{
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  return ds_port;
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}
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HWConnectedClient* HWNetServer::getChiefClient() const
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{
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  for(QList<HWConnectedClient*>::const_iterator it=connclients.begin(); it!=connclients.end(); ++it) {
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    // watch for first fully connected client (with confirmed nick)
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    if((*it)->getClientNick()!="") return *it;
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  }
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  return 0;
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}
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bool HWNetServer::isChiefClient(HWConnectedClient* cl) const
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{
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  return getChiefClient()==cl;
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}
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QMap<QString, QStringList> HWNetServer::getGameCfg() const
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{
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  for(QList<HWConnectedClient*>::const_iterator it=connclients.begin(); it!=connclients.end(); ++it) {
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    if(isChiefClient(*it)) {
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      return (*it)->m_gameCfg;
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    }
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  }
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  // error happened if we are here
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  return QMap<QString, QStringList>();
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}
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bool HWNetServer::haveNick(const QString& nick) const
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{
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  for(QList<HWConnectedClient*>::const_iterator it=connclients.begin(); it!=connclients.end(); ++it) {
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    if((*it)->getClientNick()==nick) {
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      return true;
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    }
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  }
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  return false;
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}
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QList<QStringList> HWNetServer::getTeamsConfig() const
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{
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  QList<QStringList> lst;
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  for(QList<HWConnectedClient*>::const_iterator it=connclients.begin(); it!=connclients.end(); ++it) {
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    try {
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      lst+=(*it)->getTeamNames();
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    } catch(HWConnectedClient::NoTeamNameException& e) {
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    }
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  }
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  return lst;
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}
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bool HWNetServer::shouldStart(HWConnectedClient* client)
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{
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  QList<HWConnectedClient*>::iterator it=std::find(connclients.begin(), connclients.end(), client);
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  if(it==connclients.end() || *it!=client) return false;
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  for(it=connclients.begin(); it!=connclients.end(); ++it) {
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    if(!(*it)->isReady()) return false;
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  }
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  return true;
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}
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void HWNetServer::resetStart()
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{
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  QList<HWConnectedClient*>::iterator it;
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  for(it=connclients.begin(); it!=connclients.end(); ++it) {
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    (*it)->readyToStart=false;
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  }
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}
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QString HWNetServer::prepareConfig(QStringList lst)
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{
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  QString msg=lst.join((QString)delimeter)+delimeter;
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  for(QList<HWConnectedClient*>::iterator it=connclients.begin(); it!=connclients.end(); ++it) {
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    if(!(*it)->isReady()) continue;
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    msg+=(*it)->getHedgehogsDescription()+delimeter;
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  }
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  qDebug() << msg;
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  return msg;
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}
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void HWNetServer::sendAll(QString gameCfg)
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{
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  for(QList<HWConnectedClient*>::iterator it=connclients.begin(); it!=connclients.end(); ++it) {
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    (*it)->RawSendNet(gameCfg);
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  }
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}
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void HWNetServer::sendOthers(HWConnectedClient* this_cl, QString gameCfg)
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{
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  for(QList<HWConnectedClient*>::iterator it=connclients.begin(); it!=connclients.end(); ++it) {
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    if(*it==this_cl) continue;
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    (*it)->RawSendNet(gameCfg);
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  }
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}
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HWConnectedClient::HWConnectedClient(HWNetServer* hwserver, QTcpSocket* client) :
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  readyToStart(false),
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  m_hwserver(hwserver),
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  m_client(client)
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{
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  connect(client, SIGNAL(disconnected()), this, SLOT(ClientDisconnect()));
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  connect(client, SIGNAL(readyRead()), this, SLOT(ClientRead()));
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}
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HWConnectedClient::~HWConnectedClient()
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{
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}
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void HWConnectedClient::ClientDisconnect()
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{
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  emit(HWClientDisconnected(this));
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}
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void HWConnectedClient::ClientRead()
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{
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  try {
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    while (m_client->canReadLine()) {
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      ParseLine(m_client->readLine().trimmed());
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    }
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  } catch(ShouldDisconnectException& e) {
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    m_client->close();
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  }
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}
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void HWConnectedClient::ParseLine(const QByteArray & line)
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{
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  QString msg = QString::fromUtf8 (line.data(), line.size());
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  QStringList lst = msg.split(delimeter);
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  if(!lst.size()) return;
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  if (lst[0] == "NICK") {
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    if(lst.size()<2) return;
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    if(m_hwserver->haveNick(lst[1])) {
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      RawSendNet(QString("ERRONEUSNICKNAME"));
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      throw ShouldDisconnectException();
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    }
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    client_nick=lst[1];
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    qDebug() << "send connected";
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    RawSendNet(QString("CONNECTED"));
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    if(m_hwserver->isChiefClient(this)) RawSendNet(QString("CONFIGASKED"));
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    else {
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      RawSendNet(QString("SLAVE"));
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      // send teams
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      QList<QStringList> team_conf=m_hwserver->getTeamsConfig();
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      for(QList<QStringList>::iterator tmit=team_conf.begin(); tmit!=team_conf.end(); ++tmit) {
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	RawSendNet(QString("ADDTEAM:")+delimeter+tmit->join(QString(delimeter)));
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      }
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      // send config
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      QMap<QString, QStringList> conf=m_hwserver->getGameCfg();
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      for(QMap<QString, QStringList>::iterator it=conf.begin(); it!=conf.end(); ++it) {
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	RawSendNet(QString("CONFIG_PARAM")+delimeter+it.key()+delimeter+it.value().join(QString(delimeter)));
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      }
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    }
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    return;
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  }
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  if(client_nick=="") return;
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  if (lst[0]=="START:") {
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    readyToStart=true;
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    if(m_hwserver->shouldStart(this)) {
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      // start
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      m_hwserver->sendAll("RUNGAME");
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      m_hwserver->resetStart();
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    }
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    return;
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  }
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  if(lst[0]=="CONFIG_PARAM") {
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    if(!m_hwserver->isChiefClient(this) || lst.size()<3) return; // error or permission denied :)
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    else m_gameCfg[lst[1]]=lst.mid(2);
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  }
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  if(lst[0]=="ADDTEAM:") {
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    if(lst.size()<11) return;
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    lst.pop_front();
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    // add team ID
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    static unsigned int netTeamID=1;
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    lst.insert(1, QString::number(netTeamID++));
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    // creating color config for new team
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    QString colorCfg=QString("CONFIG_PARAM%1TEAM_COLOR%1%2%1%3%1%4").arg(delimeter).arg(lst[0])\
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      .arg(netTeamID)\
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      .arg(lst.takeAt(2));
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    qDebug() << "color config:" << colorCfg;
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    m_gameCfg[colorCfg.split(delimeter)[1]]=colorCfg.split(delimeter).mid(2);
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    m_teamsCfg.push_back(lst);
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    m_hwserver->sendOthers(this, QString("ADDTEAM:")+delimeter+lst.join(QString(delimeter)));
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    RawSendNet(QString("TEAM_ACCEPTED%1%2%1%3").arg(delimeter).arg(lst[0]).arg(lst[1]));
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    return;
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  }
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  if(lst[0]=="REMOVETEAM:") {
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    if(lst.size()<2) return;
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    unsigned int netID=removeTeam(lst[1]);
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    m_hwserver->sendOthers(this, QString("REMOVETEAM:")+delimeter+lst[1]+delimeter+QString::number(netID));
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    return;
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  }
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  m_hwserver->sendOthers(this, msg);
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}
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unsigned int HWConnectedClient::removeTeam(const QString& tname)
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{
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  unsigned int netID=0;
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  for(QList<QStringList>::iterator it=m_teamsCfg.begin(); it!=m_teamsCfg.end(); ++it) {
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    if((*it)[0]==tname) {
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      netID=(*it)[1].toUInt();
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      m_teamsCfg.erase(it);
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      break;
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    }
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  }
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  return netID;
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}
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QList<QStringList> HWConnectedClient::getTeamNames() const
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{
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  return m_teamsCfg;
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}
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void HWConnectedClient::RawSendNet(const QString & str)
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{
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  RawSendNet(str.toUtf8());
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}
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void HWConnectedClient::RawSendNet(const QByteArray & buf)
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{
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  m_client->write(buf);
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  m_client->write("\n", 1);
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}
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QString HWConnectedClient::getClientNick() const
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{
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  return client_nick;
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}
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bool HWConnectedClient::isReady() const
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{
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  return readyToStart;
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}
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QString HWConnectedClient::getHedgehogsDescription() const
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{
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  return QString();//pclent_team->TeamGameConfig(65535, 4, 100, true).join((QString)delimeter);
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}