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#ifndef __PROXY_SHUFFLER_H__
#define __PROXY_SHUFFLER_H__
/*-
* Copyright (c) 2009, Moxie Marlinspike
* 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.
* 4. Neither the name of this program nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "ShuffleStream.h"
#include <boost/enable_shared_from_this.hpp>
#include <boost/asio.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/bind.hpp>
#include <cassert>
#include <iostream>
#include <string>
#define PROXY_BUF_SIZE 512
/***********
*
* This class shuffles data back and forth between two ShuffleStreams.
*
**********/
class ProxyShuffler : public boost::enable_shared_from_this<ProxyShuffler> {
private:
boost::shared_ptr<ShuffleStream> socks;
boost::shared_ptr<ShuffleStream> node;
unsigned char socksReadBuffer[PROXY_BUF_SIZE];
unsigned char nodeReadBuffer[PROXY_BUF_SIZE];
bool closed;
void readComplete(boost::shared_ptr<ShuffleStream> thisStream,
boost::shared_ptr<ShuffleStream> thatStream,
unsigned char* thisBuffer,
unsigned char* buf, std::size_t transferred);
void writeComplete(boost::shared_ptr<ShuffleStream> thisStream,
boost::shared_ptr<ShuffleStream> thatStream,
unsigned char *buf,
const boost::system::error_code &err);
void close();
public:
ProxyShuffler(boost::shared_ptr<ShuffleStream> socks,
boost::shared_ptr<ShuffleStream> node);
void shuffle();
};
#endif