DwmIpv4IcmpEchoRequest.hh

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//===========================================================================
// @(#) $DwmPath: dwm/libDwm/tags/libDwm-0.6.0/include/DwmIpv4IcmpEchoRequest.hh 8401 $
// @(#) $Id: DwmIpv4IcmpEchoRequest.hh 8401 2016-04-17 06:44:31Z dwm $
//===========================================================================
//  Copyright (c) Daniel W. McRobb 2007, 2016
//  All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions
//  are met:
//
//  1. Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
//  2. 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.
//  3. The names of the authors and copyright holders may not be used to
//     endorse or promote products derived from this software without
//     specific prior written permission.
//
//  IN NO EVENT SHALL DANIEL W. MCROBB BE LIABLE TO ANY PARTY FOR
//  DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
//  INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE,
//  EVEN IF DANIEL W. MCROBB HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
//  DAMAGE.
//
//  THE SOFTWARE PROVIDED HEREIN IS ON AN "AS IS" BASIS, AND
//  DANIEL W. MCROBB HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
//  UPDATES, ENHANCEMENTS, OR MODIFICATIONS. DANIEL W. MCROBB MAKES NO
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//  OR THAT THE USE OF THIS SOFTWARE WILL NOT INFRINGE ANY PATENT,
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//===========================================================================

//---------------------------------------------------------------------------
//---------------------------------------------------------------------------

#ifndef _DWMIPV4ICMPECHOREQUEST_HH_
#define _DWMIPV4ICMPECHOREQUEST_HH_

extern "C" {
#include <inttypes.h>
}

#include <sstream>
#include <string>

#include "DwmIO.hh"
#include "DwmIpv4Address.hh"
#include "DwmIpv4IcmpMessage.hh"
#include "DwmSocket.hh"

namespace Dwm {

  //--------------------------------------------------------------------------
  //--------------------------------------------------------------------------
  class Ipv4IcmpEchoRequest
    : public Ipv4IcmpMessage
  {
  public:
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    Ipv4IcmpEchoRequest();

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    Ipv4IcmpEchoRequest(uint16_t id, uint16_t seq, const std::string & data);

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    Ipv4IcmpEchoRequest(uint8_t *buf, uint16_t len);

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    uint16_t Identifier() const;

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    uint16_t Identifier(uint16_t id);

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    uint16_t SequenceNumber() const;

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    uint16_t SequenceNumber(uint16_t seq);

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    std::string Data() const;

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    std::string Data(const std::string & data);

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    template <typename T>
    bool SetData(const T & data)
    {
      bool  rc = false;
      uint32_t  dataLen = IO::StreamedLength(data);
      Reallocate(dataLen + 8);
      std::ostringstream  os;
      if (IO::Write(os, data)) {
        memcpy((char *)_data.second + 8, os.str().c_str(), dataLen);
        rc = true;
      }
      return rc;
    }

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    template <typename T>
    bool GetData(T & data) const
    {
      bool  rc = false;
      if (_data.first >= (8 + IO::StreamedLength(data))) {
        std::istringstream  is(std::string((char *)_data.second + 8,
                                           _data.first - 8));
        rc = (IO::Read(is, data) ? true : false);
      }
      return(rc);
    }
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    bool SendTo(Socket & s, const Ipv4Address & destination);
    
  };
  
}  // namespace Dwm

#endif  // _DWMIPV4ICMPECHOREQUEST_HH_

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