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/*
 * ConnectionManager.h
 *
 * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAD_SERVER_CONNECTIONMANAGER_H_
#define MAD_SERVER_CONNECTIONMANAGER_H_

#include <Common/Configurable.h>
#include <Common/HostInfo.h>
#include <Common/Initializable.h>
#include <Common/RequestManager.h>

#include <list>
#include <vector>
#include <map>
#include <set>

#include <boost/asio.hpp>

namespace Mad {

namespace Net {
class Connection;
class Listener;
class Packet;
}

namespace Server {

class ConnectionManager : public Common::Configurable, public Common::Initializable, boost::noncopyable {
  private:
    class ServerConnection : public Common::Connection {
      public:
        enum ConnectionType {
          UNKNOWN = 0, DAEMON, CLIENT
        };

      private:
        boost::shared_ptr<Net::Connection> connection;
        ConnectionType type;
        Common::HostInfo *hostInfo;

      protected:
        virtual bool send(const Net::Packet &packet);

      public:
        ServerConnection(boost::shared_ptr<Net::Connection> connection0);

        bool isConnected() const;

        virtual bool disconnect();
        //virtual void* getCertificate(size_t *size) const;
        //virtual void* getPeerCertificate(size_t *size) const;

        ConnectionType getConnectionType() const {
          return type;
        }

        Common::HostInfo *getHostInfo() const {
          return hostInfo;
        }

        bool isIdentified() const {
          return (type != UNKNOWN);
        }

        void identify() {
          type = CLIENT;
        }

        void identify(Common::HostInfo *info) {
          type = DAEMON;
          hostInfo = info;
        }
    };

    static ConnectionManager connectionManager;

    std::string x509TrustFile, x509CrlFile, x509CertFile, x509KeyFile;

    std::vector<boost::asio::ip::tcp::endpoint> listenerAddresses;
    std::list<boost::shared_ptr<Net::Listener> > listeners;

    std::set<boost::shared_ptr<ServerConnection> > connections;

    std::map<std::string,Common::HostInfo> daemonInfo;

    void updateState(Common::HostInfo *hostInfo, Common::HostInfo::State state);
    void updateStateFinished(const Common::Request&) {
      // TODO Error handling (updateStateFinished)
    }

    ConnectionManager() {}

    void handleNewConnection(boost::shared_ptr<Net::Connection> con);
    void handleDisconnect(boost::shared_ptr<ServerConnection> con);

  protected:
    virtual bool handleConfigEntry(const Common::ConfigEntry &entry, bool handled);
    virtual void configFinished();

    virtual void doInit();
    virtual void doDeinit();

  public:
    static ConnectionManager* get() {
      return &connectionManager;
    }

    boost::shared_ptr<Common::Connection> getDaemonConnection(const std::string &name) const throw (Net::Exception&);
    std::string getDaemonName(const Common::Connection *con) const throw (Net::Exception&);

    void identifyDaemonConnection(Common::Connection *con, const std::string &name) throw (Net::Exception&);
    void identifyClientConnection(Common::Connection *con) throw (Net::Exception&);

    std::vector<Common::HostInfo> getDaemonList() const;
};

}
}

#endif /*MAD_SERVER_CONNECTIONMANAGER_H_*/