source: trunk/ETSI-Testsuites/ETSI_auto_IOT/adapter/src/Capture/PCAPCapture.h

/**
 * @file PCAPCapture.h
 * This header file defines the PCAPCapture class.
 * @author Tomas Urban
 * @version 0.2
 * @date 22/07/2009
 */
#ifndef PCAP_CAPTURE_H
#define PCAP_CAPTURE_H

#include "GenericCapture.h"
#include <boost/thread/mutex.hpp>
#include <boost/thread/condition.hpp>

#define HAVE_REMOTE
#include "pcap/pcap.h"

/**
 * This abstract class describes capturing based on the pcap library.
 */
class PCAPCapture :     public GenericCapture
{
private:
        static const int SNAP_LEN = 0x1000; 
        pcap_t ** m_fp; //array of pcap handles
        int m_nHandleCount;
        bool * m_threadRunning;
        static void DispatcherHandler(u_char * temp1, const struct pcap_pkthdr *header, const u_char *pkt_data);
        boost::mutex m_mutex;
        boost::condition m_threadClosed;
        bool m_bRunning;
        pcap_dumper_t ** m_dumpFiles;
        void CloseCaptureFile();        
        class CapturingThread
        { 
        public:
                PCAPCapture * m_pCapture;
                int m_nHandleIndex;
                CapturingThread(PCAPCapture * pCapture, int nHandleIndex);
                void operator()();
        }; 
protected:
        PCAPCapture();  
        /**
         * Saves supplied array of pcap sources for later use. This method is usually called
         * by the #OpenDevice method of child classes.
         * @param srcBuf Source array
         * @param nLen Number of elements in the source array
         */
        void SetPcapHandles(pcap_t ** srcBuf, int nLen);
        /**
         * Helper method for opening a pcap data source
         * @return Pointer to the pcap source or \c NULL if the operation is not successful.
         */
        pcap_t * OpenPcapSource(const std::string sSource);
        /**
         * Helper method for setting up data saving into a file. It is used by child classes
         * that allow data saving into a file.
         * @param sFile Path to the capture file
         */
        bool InitCaptureFile(const std::string sFile);
public:
        virtual ~PCAPCapture(void);
        virtual ECaptureType GetCaptureType() { return ECaptureType_PCAP; }
        /**
         * Sets a traffic filter. The filter must follow pcap library syntax for filtering expressions.
         * @param sFilter Filtering data in pcap format
         * @return \c true if the operation was successful, \c false otherwise (e.g. in case
         * of invalid filter format)
         */
        virtual bool SetFilter(const std::string sFilter);
        virtual void CloseDevice();
        virtual bool StartCapture();
        virtual bool StopCapture();
};

#endif