CAReplayCtrlChannelMsgProc.cpp

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/*
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    other materials provided with the distribution.
 
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    may be used to endorse or promote products derived from this software without specific 
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*/
#include "StdAfx.h"
#ifdef REPLAY_DETECTION
#include "CAReplayCtrlChannelMsgProc.hpp"
#include "CAReplayControlChannel.hpp"
#include "CAMixWithReplayDB.hpp"
#include "CAMix.hpp"
#include "CAReplayControlChannel.hpp"
#include "CACmdLnOptions.hpp"
#include "CAFirstMix.hpp"
#include "CADatabase.hpp"
 
CAReplayCtrlChannelMsgProc::CAReplayCtrlChannelMsgProc(const CAMixWithReplayDB* pMix)
  {
    CAMsg::printMsg(LOG_DEBUG,"CAReplayCtrlChannelMsgProc - constructor - this=%p\n",this);
    m_pDownstreamReplayControlChannel=NULL;
    m_pUpstreamReplayControlChannel=NULL;
    m_pThreadTimestampPropagation=NULL;
    m_pMix=pMix;
    m_docTemplate=NULL;
    initTimestampsMessageTemplate();
    CAControlChannelDispatcher* pDispatcher=m_pMix->getDownstreamControlChannelDispatcher();
 
    if(pDispatcher!=NULL)
      {
        #ifdef DEBUG
          CAMsg::printMsg(LOG_DEBUG,"CAReplayCtrlChannelMsgProc - constructor - registering downstream replay control channel\n",this);
        #endif
        m_pDownstreamReplayControlChannel=new CAReplayControlChannel(this);
        CAMsg::printMsg(LOG_DEBUG,"m_pDownstreamReplayControlChannel= %p\n",m_pDownstreamReplayControlChannel);
        pDispatcher->registerControlChannel(m_pDownstreamReplayControlChannel);
      }
    pDispatcher=m_pMix->getUpstreamControlChannelDispatcher();
    if(pDispatcher!=NULL)
      {
        #ifdef DEBUG
          CAMsg::printMsg(LOG_DEBUG,"CAReplayCtrlChannelMsgProc - constructor - registering upstream replay control channel\n",this);
        #endif
        m_pUpstreamReplayControlChannel=new CAReplayControlChannel(this);
        pDispatcher->registerControlChannel(m_pUpstreamReplayControlChannel);
      }
  }
 
CAReplayCtrlChannelMsgProc::~CAReplayCtrlChannelMsgProc()
  {
    #ifdef DEBUG
      CAMsg::printMsg(LOG_DEBUG,"CAReplayCtrlChannelMsgProc::~CAReplayCtrlChannelMsgProc()\n");
    #endif
    stopTimeStampPorpagation();
    CAControlChannelDispatcher* pDispatcher=m_pMix->getDownstreamControlChannelDispatcher();
    if(pDispatcher!=NULL)
      {
        pDispatcher->removeControlChannel(m_pDownstreamReplayControlChannel->getID());
        delete m_pDownstreamReplayControlChannel;
        m_pDownstreamReplayControlChannel = NULL;
      }
    pDispatcher=m_pMix->getUpstreamControlChannelDispatcher();
    if(pDispatcher!=NULL)
      {
        pDispatcher->removeControlChannel(m_pUpstreamReplayControlChannel->getID());
        delete m_pUpstreamReplayControlChannel;
        m_pUpstreamReplayControlChannel = NULL;
      }
  }
 
/* not used and not necesary
SINT32 CAReplayCtrlChannelMsgProc::proccessGetTimestamps(const CAReplayControlChannel* pReceiver) const
  {
    //Only for the first mix get timestamps is supported for the moment!
    if(m_pMix->getType()!=CAMix::FIRST_MIX)
      {
        return E_UNKNOWN;
      }
 
    CAFirstMix* pMix=(CAFirstMix*)m_pMix;
    DOM_Document docTemplate=DOM_Document::createDocument();
    DOM_Element elemMixes=docTemplate.createElement("Mixes");
    docTemplate.appendChild(elemMixes);
    tMixParameters* mixParameters=pMix->getMixParameters();
    time_t aktTime=time(NULL);
    for(SINT32 i=0;i<pMix->getMixCount()-1;i++)
      {
        DOM_Element elemMix=docTemplate.createElement("Mix");
        setDOMElementAttribute(elemMix,"id",mixParameters[i].m_strMixID);
        DOM_Element elemReplay=docTemplate.createElement("Replay");
        elemMix.appendChild(elemReplay);
        DOM_Element elemReplayOffset=docTemplate.createElement("ReplayOffset");
        setDOMElementValue(elemReplayOffset,(UINT32) (mixParameters[i].m_u32ReplayOffset+aktTime-pMix->m_u64LastTimestampReceived));
        elemReplay.appendChild(elemReplayOffset);
        elemMixes.appendChild(elemMix);
      }
    return pReceiver->sendXMLMessage(docTemplate);
  }
*/
// possibility for the first mix to request the timestamps
SINT32 CAReplayCtrlChannelMsgProc::proccessGetTimestamp(const CAReplayControlChannel* pReceiver,const UINT8* strMixID) const
  {
    UINT8 buff[255];
    pglobalOptions->getMixId(buff,255);
    if(strMixID==NULL||strncmp((char*)strMixID,(char*)buff,255)==0)//our own replay timestamp is requested
      {
        //First Mixes does not have to send his timestamp!
        if(m_pMix->getType()==CAMix::FIRST_MIX)
          return E_SUCCESS;
 
        const CAMixWithReplayDB* pMix=(CAMixWithReplayDB*)m_pMix;
 
        DOMElement* elemReplayTimestamp=NULL;
        if (getDOMChildByName(m_docTemplate->getDocumentElement(),"ReplayOffset",elemReplayTimestamp,true)!=E_SUCCESS){
          return E_UNKNOWN;
          }
        setDOMElementValue(elemReplayTimestamp,(UINT32) (time(NULL)-m_pMix->m_u64ReferenceTime));
 
        return pReceiver->sendXMLMessage(m_docTemplate);
      }
    else if(m_pUpstreamReplayControlChannel!=NULL&&strMixID!=NULL)//the replay timestamp of some other mix is requested
      {
        XERCES_CPP_NAMESPACE::DOMDocument* doc=createDOMDocument();
        DOMElement *elemGet=createDOMElement(doc,"GetTimestamp");
        setDOMElementAttribute(elemGet,"id",strMixID);
        doc->appendChild(elemGet);
 
        SINT32 return_value=m_pUpstreamReplayControlChannel->sendXMLMessage(doc);
        if (doc != NULL)
        {
          doc->release();
          doc = NULL;
        }
 
        return return_value;
      }
    return E_SUCCESS; 
  }
 
SINT32 CAReplayCtrlChannelMsgProc::propagateCurrentReplayTimestamp()
  {
    UINT8 buff[255];
    pglobalOptions->getMixId(buff,255);
 
    #ifdef DEBUG
      CAMsg::printMsg(LOG_DEBUG,"Start replay timestamp propagation\n");
    #endif
 
    if(m_pDownstreamReplayControlChannel==NULL)
      return E_UNKNOWN;
 
    DOMElement* elemReplayTimestamp=NULL;
    if (getDOMChildByName(m_docTemplate->getDocumentElement(),"ReplayOffset",elemReplayTimestamp,true)!=E_SUCCESS){
      return E_UNKNOWN;
      }
    setDOMElementValue(elemReplayTimestamp,(UINT32) (time(NULL)-m_pMix->m_u64ReferenceTime));
 
    m_pDownstreamReplayControlChannel->sendXMLMessage(m_docTemplate);
 
    #ifdef DEBUG
      CAMsg::printMsg(LOG_DEBUG,"Replay timestamp propagation finished\n");
    #endif
 
    return E_SUCCESS;
  }
 
THREAD_RETURN rp_loopPropagateTimestamp(void* param)
  {
    CAReplayCtrlChannelMsgProc* pReplayMsgProc=(CAReplayCtrlChannelMsgProc*)param;
    UINT32 propagationInterval=pReplayMsgProc->m_u32PropagationInterval;
    while(pReplayMsgProc->m_bRun)
      {
        if(propagationInterval==0)
          {
            pReplayMsgProc->propagateCurrentReplayTimestamp();
            propagationInterval=pReplayMsgProc->m_u32PropagationInterval;
          }
        sSleep(60);
        propagationInterval--;
      }
    THREAD_RETURN_SUCCESS;
  }
 
SINT32 CAReplayCtrlChannelMsgProc::startTimeStampPorpagation(UINT32 minutesPropagationInterval)
  {
    m_u32PropagationInterval=minutesPropagationInterval;
    m_pThreadTimestampPropagation=new CAThread();
    m_pThreadTimestampPropagation->setMainLoop(rp_loopPropagateTimestamp);
    m_bRun=true;
    return m_pThreadTimestampPropagation->start(this);
  }
 
SINT32 CAReplayCtrlChannelMsgProc::stopTimeStampPorpagation()
  {
    m_bRun=false;
    if(m_pThreadTimestampPropagation!=NULL)
      {
        m_pThreadTimestampPropagation->join();
        delete m_pThreadTimestampPropagation;
        m_pThreadTimestampPropagation = NULL;
      }
    m_pThreadTimestampPropagation=NULL;
    return E_SUCCESS;
  }
 
SINT32 CAReplayCtrlChannelMsgProc::initTimestampsMessageTemplate()
  {
    //NOT for the first mix! Only propagateCurrentReplayTimestamps is supported for the moment!
    if(m_pMix->getType()==CAMix::FIRST_MIX)
      {
        return E_SUCCESS;
      }
 
    if(m_docTemplate!=NULL)
      {
        return E_UNKNOWN;
      }
 
    UINT8 buff[255];
    pglobalOptions->getMixId(buff,255);
 
    m_docTemplate=createDOMDocument();
    DOMElement *elemMix=createDOMElement(m_docTemplate,"Mix");
    setDOMElementAttribute(elemMix,"id",buff);
    DOMElement *elemReplay=createDOMElement(m_docTemplate,"Replay");
    elemMix->appendChild(elemReplay);
    DOMElement *elemReplayOffset=createDOMElement(m_docTemplate,"ReplayOffset");
//    setDOMElementValue(elemReplayOffset,(UINT32) (time(NULL)-m_pMix->m_u64ReferenceTime));
    elemReplay->appendChild(elemReplayOffset);
    DOMElement *elemReplayBase=createDOMElement(m_docTemplate,"ReplayBase");
    setDOMElementValue(elemReplayBase,(UINT32) (REPLAY_BASE));
    elemReplay->appendChild(elemReplayBase);
    m_docTemplate->appendChild(elemMix);
 
    return E_SUCCESS;
  }
 
 
SINT32 CAReplayCtrlChannelMsgProc::proccessGotTimestamp(const CAReplayControlChannel* pReceiver,const UINT8* strMixID,const UINT32 offset) const
  {
    //if not first mix just forwards them down the drain...
    #ifdef DEBUG
      CAMsg::printMsg(LOG_DEBUG,"CAReplayCtrlChannelMsgProc::proccessGotTimestamp() \n");
    #endif
    if(m_pMix->getType()!=CAMix::FIRST_MIX)
      {
        XERCES_CPP_NAMESPACE::DOMDocument* doc=createDOMDocument();
        DOMElement *elemMix=createDOMElement(doc,"Mix");
        setDOMElementAttribute(elemMix,"id",strMixID);
        DOMElement *elemReplay=createDOMElement(doc,"Replay");
        elemMix->appendChild(elemReplay);
        DOMElement *elemReplayOffset=createDOMElement(doc,"ReplayOffset");
        setDOMElementValue(elemReplayOffset,(UINT32) offset);
        elemReplay->appendChild(elemReplayOffset);
        doc->appendChild(elemMix);
 
        SINT32 return_value=m_pDownstreamReplayControlChannel->sendXMLMessage(doc);
        if (doc != NULL)
        {
          doc->release();
          doc = NULL;
        }
 
        return return_value;
      }
 
    //First mix --> update mix parameters
    CAFirstMix* pMix=(CAFirstMix*)m_pMix;
    #ifdef DEBUG
      CAMsg::printMsg(LOG_DEBUG,"CAReplayCtrlChannelMsgProc::proccessGotTimestamp() - MixID: %s\n",strMixID);
      CAMsg::printMsg(LOG_DEBUG,"CAReplayCtrlChannelMsgProc::proccessGotTimestamp() - LastTimestamp DIFF: %d\n",time(NULL)-pMix->m_u64LastTimestampReceived);
    #endif
 
    tMixParameters params;
    UINT32 len=strlen((char*)strMixID);
    params.m_strMixID=new UINT8[len+1];
    memcpy(params.m_strMixID,strMixID,len+1);
    params.m_u32ReplayOffset=offset;
    pMix->setMixParameters(params);
 
    pMix->m_u64LastTimestampReceived=time(NULL);
    delete[] params.m_strMixID;
    params.m_strMixID = NULL;
    return E_SUCCESS;
  }
 
SINT32 CAReplayCtrlChannelMsgProc::sendGetTimestamp(const UINT8* strMixID)
  {
    if(strMixID==NULL||strlen((const char*)strMixID)>400)
      return E_UNKNOWN;
 
    XERCES_CPP_NAMESPACE::DOMDocument* doc=createDOMDocument();
    DOMElement *elemGet=createDOMElement(doc,"GetTimestamp");
    setDOMElementAttribute(elemGet,"id",strMixID);
    doc->appendChild(elemGet);
 
    SINT32 return_value=m_pUpstreamReplayControlChannel->sendXMLMessage(doc);
    if (doc != NULL)
    {
      doc->release();
      doc = NULL;
    }
 
    return return_value;
  }
 
#endif //REPLAY_DETECTION