socks5bytestreamserver.h

/*
  Copyright (c) 2007-2017 by Jakob Schröter <js@camaya.net>
  This file is part of the gloox library. http://camaya.net/gloox

  This software is distributed under a license. The full license
  agreement can be found in the file LICENSE in this distribution.
  This software may not be copied, modified, sold or distributed
  other than expressed in the named license agreement.

  This software is distributed without any warranty.
*/


#ifndef SOCKS5BYTESTREAMSERVER_H__
#define SOCKS5BYTESTREAMSERVER_H__

#include "macros.h"
#include "connectionhandler.h"
#include "connectiontcpserver.h"
#include "logsink.h"
#include "mutex.h"

namespace gloox
{

  class GLOOX_API SOCKS5BytestreamServer : public ConnectionHandler, public ConnectionDataHandler
  {

    friend class SOCKS5BytestreamManager;

    public:
      SOCKS5BytestreamServer( const LogSink& logInstance, int port, const std::string& ip = EmptyString );

      ~SOCKS5BytestreamServer();

      ConnectionError listen();

      ConnectionError recv( int timeout );

      void stop();

      int localPort() const;

      const std::string localInterface() const;

      int serverSocket() const { return m_tcpServer->socket(); }

      // reimplemented from ConnectionHandler
      virtual void handleIncomingConnection( ConnectionBase* server, ConnectionBase* connection );

      // reimplemented from ConnectionDataHandler
      virtual void handleReceivedData( const ConnectionBase* connection, const std::string& data );

      // reimplemented from ConnectionDataHandler
      virtual void handleConnect( const ConnectionBase* connection );

      // reimplemented from ConnectionDataHandler
      virtual void handleDisconnect( const ConnectionBase* connection, ConnectionError reason );

    private:
      SOCKS5BytestreamServer& operator=( const SOCKS5BytestreamServer& );
      void registerHash( const std::string& hash );
      void removeHash( const std::string& hash );
      ConnectionBase* getConnection( const std::string& hash );

      enum NegotiationState
      {
        StateDisconnected,
        StateUnnegotiated,
        StateAuthmethodAccepted,
        StateAuthAccepted,
        StateDestinationAccepted,
        StateActive
      };

      struct ConnectionInfo
      {
        NegotiationState state;
        std::string hash;
      };

      typedef std::map<ConnectionBase*, ConnectionInfo> ConnectionMap;
      ConnectionMap m_connections;

      typedef std::list<const ConnectionBase*> ConnectionList;
      ConnectionList m_oldConnections;

      typedef std::list<std::string> HashMap;
      HashMap m_hashes;

      ConnectionTCPServer* m_tcpServer;

      util::Mutex m_mutex;
      const LogSink& m_logInstance;
      std::string m_ip;
      int m_port;

  };

}

#endif // SOCKS5BYTESTREAMSERVER_H__