oblowfishstream.hpp

/************************************************************************************
 *    This file is part of the MynahSA streaming and archiving toolkit              *
 *    Copyright (C) 2006 Mynah-Software Ltd. All Rights Reserved.                   *
 *                                                                                  *
 *    This program is free software; you can redistribute it and/or modify          *
 *    it under the terms of the GNU General Public License, version 2               *
 *    as published by the Free Software Foundation.                                 *
 *                                                                                  *
 *    This program is distributed in the hope that it will be useful,               *
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of                *
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                 *
 *    GNU General Public License for more details.                                  *
 *                                                                                  *
 *    You should have received a copy of the GNU General Public License along       *
 *    with this program; if not, write to the Free Software Foundation, Inc.,       *
 *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.                   *
 *                                                                                  *
 ************************************************************************************/

#ifndef __o_blowfish_stream_hpp
#define __o_blowfish_stream_hpp

#include <mynahsa/ostreambase.hpp>

#include <openssl/blowfish.h>

#include <iostream>

namespace MynahSA { 
  class OBlowfishStream : public OStreamBase {
  public:
    
    OBlowfishStream(std::ostream& os, const std::string& key);
    
    OBlowfishStream(const OBlowfishStream& os);
    
    virtual ~OBlowfishStream();
    
    virtual OStreamBase& operator<<(const char);
    
    virtual OStreamBase& operator<<(const unsigned char);
    
    virtual OStreamBase& operator<<(const short);
    
    virtual OStreamBase& operator<<(const unsigned short);
    
    virtual OStreamBase& operator<<(const bool);
    
    virtual OStreamBase& operator<<(const int);
    
    virtual OStreamBase& operator<<(const unsigned int);
    
    virtual OStreamBase& operator<<(const long long);
    
    virtual OStreamBase& operator<<(const unsigned long long);
    
    virtual OStreamBase& operator<<(const double);
    
    virtual OStreamBase& operator<<(const float);   
        
    // using declaration to make base class members accessible
    using OStreamBase::operator<<;

    void close();

    
  private:
    void flush();
    
    void bfWriteChar(unsigned char value);

    std::ostream& _os;
    
    unsigned char _buffer[8];
    
    unsigned char _outBuffer[8];
    
    unsigned char _ivec[8];
    
    unsigned int _buffPtr;
  
    BF_KEY _bfKey;
    
    bool _open;
    

  };  // class OBlowfishStream

};  // namespace MynahSA

#endif