DwmIpv4IcmpMessage.hh

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//===========================================================================
// @(#) $DwmPath: dwm/libDwm/tags/libDwm-0.6.0/include/DwmIpv4IcmpMessage.hh 8401 $
// @(#) $Id: DwmIpv4IcmpMessage.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
//  REPRESENTATIONS AND EXTENDS NO WARRANTIES OF ANY KIND, EITHER
//  IMPLIED OR EXPRESS, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
//  WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,
//  OR THAT THE USE OF THIS SOFTWARE WILL NOT INFRINGE ANY PATENT,
//  TRADEMARK OR OTHER RIGHTS.
//===========================================================================

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

#ifndef _DWMIPV4ICMPMESSAGE_HH_
#define _DWMIPV4ICMPMESSAGE_HH_

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

#include <utility>

#include "DwmBZ2Writable.hh"
#include "DwmGZWritable.hh"
#include "DwmWritable.hh"

namespace Dwm {

  //--------------------------------------------------------------------------
  //--------------------------------------------------------------------------
  class Ipv4IcmpMessage
    : public Writable, public GZWritable, public BZ2Writable
  {
  public:
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    Ipv4IcmpMessage();
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    ~Ipv4IcmpMessage();
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    uint8_t Type() const;
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    uint8_t Type(uint8_t type);
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    uint8_t Code() const;
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    uint8_t Code(uint8_t code);

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    uint16_t Checksum();

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    void SetChecksum();
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    std::istream & Read(std::istream & is, uint16_t len);

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    std::ostream & Write(std::ostream & os) const;

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    ssize_t Read(int fd, uint16_t len);
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    ssize_t Write(int fd) const;
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    size_t Read(FILE *f, uint16_t len);
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    size_t Write(FILE *f) const;

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    int Read(gzFile gzf, uint16_t len);
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    int Write(gzFile gzf) const;
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    int BZRead(BZFILE *bzf, uint16_t len);
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    int BZWrite(BZFILE *bzf) const;
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    uint32_t StreamedLength() const;
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    bool operator == (const Ipv4IcmpMessage & msg) const;
    
  protected:
    std::pair<uint16_t, uint8_t *>  _data;
    bool                            _ownData;

    void Free();
    void Allocate(uint16_t len);
    void Reallocate(uint16_t len);
  };
  
}  // namespace Dwm

#endif  // _DWMIPV4ICMPMESSAGE_HH_

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