inbandbytestream.h

/*
  Copyright (c) 2006-2017 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 INBANDBYTESTREAM_H__
#define INBANDBYTESTREAM_H__

#include "bytestream.h"
#include "iqhandler.h"
#include "messagehandler.h"
#include "gloox.h"

namespace gloox
{

  class BytestreamDataHandler;
  class ClientBase;
  class Message;

  class GLOOX_API InBandBytestream : public Bytestream, public IqHandler, public MessageHandler
  {

    friend class SIProfileFT;

    public:
      virtual ~InBandBytestream();

      int blockSize() const { return m_blockSize; }

      void setBlockSize( int blockSize ) { m_blockSize = blockSize; }

      // reimplemented from Bytestream
      virtual ConnectionError recv( int timeout = -1 ) { (void)timeout; return ConnNoError; }

      // reimplemented from Bytestream
      bool send( const std::string& data );

      // reimplemented from Bytestream
      virtual bool connect();

      // reimplemented from Bytestream
      virtual void close();

      // reimplemented from IqHandler
      virtual bool handleIq( const IQ& iq );

      // reimplemented from IqHandler
      virtual void handleIqID( const IQ& iq, int context );

      // reimplemented from MessageHandler
      virtual void handleMessage( const Message& msg, MessageSession* session = 0 );

    private:
#ifdef INBANDBYTESTREAM_TEST
    public:
#endif
      enum IBBType
      {
        IBBOpen,
        IBBData,
        IBBClose,
        IBBInvalid
      };

      class IBB : public StanzaExtension
      {
        public:
          IBB( const std::string& sid, int blocksize );

          IBB( const std::string& sid, int seq, const std::string& data );

          IBB( const std::string& sid );

          IBB( const Tag* tag = 0 );

          virtual ~IBB();

          IBBType type() const { return m_type; }

          int blocksize() const { return m_blockSize; }

          int seq() const { return m_seq; }

          const std::string sid() const { return m_sid; }

          const std::string& data() const { return m_data; }

          // reimplemented from StanzaExtension
          virtual const std::string& filterString() const;

          // reimplemented from StanzaExtension
          virtual StanzaExtension* newInstance( const Tag* tag ) const
          {
            return new IBB( tag );
          }

          // reimplemented from StanzaExtension
          virtual Tag* tag() const;

          // reimplemented from StanzaExtension
          virtual StanzaExtension* clone() const
          {
            return new IBB( *this );
          }

        private:
          std::string m_sid;
          int m_seq;
          int m_blockSize;
          std::string m_data;
          IBBType m_type;
      };

      InBandBytestream( ClientBase* clientbase, LogSink& logInstance, const JID& initiator,
                        const JID& target, const std::string& sid );
      InBandBytestream& operator=( const InBandBytestream& );
      void closed(); // by remote entity
      void returnResult( const JID& to, const std::string& id );
      void returnError( const JID& to, const std::string& id, StanzaErrorType type, StanzaError error );

      ClientBase* m_clientbase;
      int m_blockSize;
      int m_sequence;
      int m_lastChunkReceived;

  };

}

#endif // INBANDBYTESTREAM_H__