CAAbstractControlChannel.hpp

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/*
Copyright (c) 2000, The JAP-Team
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

  - Redistributions of source code must retain the above copyright notice,
    this list of conditions and the following disclaimer.

  - Redistributions in binary form must reproduce the above copyright notice,
    this list of conditions and the following disclaimer in the documentation and/or
    other materials provided with the distribution.

  - Neither the name of the University of Technology Dresden, Germany nor the names of its contributors
    may be used to endorse or promote products derived from this software without specific
    prior written permission.


THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS
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*/

#ifndef __CAABSTRACTCONTROLCHANNEL__
#define __CAABSTRACTCONTROLCHANNEL__

#ifndef ONLY_LOCAL_PROXY
#include "CAControlChannelDispatcher.hpp"
#include "xml/DOM_Output.hpp"


class CAAbstractControlChannel
{
  public:
    CAAbstractControlChannel(UINT8 id, bool bIsEncrypted)
      {
        m_bIsEncrypted=bIsEncrypted;
        m_ID=id;
        m_pDispatcher=NULL;
      }

    virtual ~CAAbstractControlChannel()
      {
      }

    SINT32 sendXMLMessage(const XERCES_CPP_NAMESPACE::DOMDocument* pDocMsg) const
      {
        UINT32 tlen=0xFFFF;
        UINT8* tmpB=new UINT8[tlen];
        if(DOM_Output::dumpToMem(pDocMsg,tmpB,&tlen)!=E_SUCCESS || tlen>0xFFFF)
          {
            delete[]tmpB;
            return E_SPACE;
          }
        SINT32 ret=sendXMLMessage(tmpB,tlen);
        delete[] tmpB;
        return ret;
      }

    SINT32 sendXMLMessage(const UINT8* msgXML,UINT32 msgLen) const
      {
        //CAMsg::printMsg(LOG_DEBUG,"Will send xml msg over control channel\n");
        if(msgLen>0xFFFF)
          {
            return E_SPACE;
          }
        UINT32 tmpBLen=msgLen+2+16; //2for msg len and 16 for auth tag
        UINT8* tmpB=new UINT8[tmpBLen];
        if(m_bIsEncrypted)
          {
            m_pDispatcher->encryptMessage(msgXML,msgLen,tmpB+2,&tmpBLen);
          }
        else
          {
            memcpy(tmpB+2,msgXML,msgLen);
            tmpBLen=msgLen;
          }
        tmpB[0]=(UINT8)(msgLen>>8);
        tmpB[1]=(UINT8)(msgLen&0xFF);
        SINT32 ret=m_pDispatcher->sendMessages(m_ID,tmpB,tmpBLen+2);
        delete[] tmpB;
        return ret;
      }

    UINT32 getID() const
      {
        return m_ID;
      }

//    bool isEncrypted();

  protected:
    virtual SINT32 proccessMessage(const UINT8* msg, UINT32 msglen)=0;

    virtual SINT32 proccessMessageComplete()=0;

    SINT32 setDispatcher(CAControlChannelDispatcher* pDispatcher)
      {
        m_pDispatcher=pDispatcher;
        return E_SUCCESS;
      }

    friend class CAControlChannelDispatcher;
    CAControlChannelDispatcher* m_pDispatcher;
    bool m_bIsEncrypted;
    UINT32 m_ID;
};

#endif

#endif //ONLY_LOCAL_PROXY

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