mirror of
https://github.com/PurpleI2P/i2pd.git
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100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
#ifndef SOCKS4A_H__
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#define SOCKS4A_H__
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#include <thread>
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#include <boost/asio.hpp>
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#include <vector>
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#include <mutex>
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#include "Identity.h"
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#include "Streaming.h"
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namespace i2p
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{
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namespace proxy
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{
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const size_t socks_buffer_size = 8192;
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class SOCKS4AHandler {
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private:
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enum state {
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INITIAL,
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OKAY,
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END
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};
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void GotClientRequest(boost::system::error_code & ecode, std::string & host, uint16_t port);
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void HandleSockRecv(const boost::system::error_code & ecode, std::size_t bytes_transfered);
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void HandleSockForward(const boost::system::error_code & ecode, std::size_t bytes_transfered);
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void HandleStreamRecv(const boost::system::error_code & ecode, std::size_t bytes_transfered);
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void Terminate();
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void CloseSock();
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void CloseStream();
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void AsyncSockRead();
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void AsyncStreamRead();
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void SocksFailed();
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void LeaseSetTimeout(const boost::system::error_code & ecode);
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void StreamWrote(const boost::system::error_code & ecode);
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void SockWrote(const boost::system::error_code & ecode);
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void SentConnectionSuccess(const boost::system::error_code & ecode);
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void ConnectionSuccess();
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uint8_t m_sock_buff[socks_buffer_size];
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uint8_t m_stream_buff[socks_buffer_size];
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boost::asio::io_service * m_ios;
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boost::asio::ip::tcp::socket * m_sock;
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boost::asio::deadline_timer m_ls_timer;
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i2p::stream::Stream * m_stream;
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i2p::data::LeaseSet * m_ls;
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i2p::data::IdentHash m_dest;
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state m_state;
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public:
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SOCKS4AHandler(boost::asio::io_service * ios, boost::asio::ip::tcp::socket * sock) :
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m_ios(ios), m_sock(sock), m_ls_timer(*ios),
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m_stream(nullptr), m_ls(nullptr), m_state(INITIAL) { AsyncSockRead(); }
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~SOCKS4AHandler() { CloseSock(); CloseStream(); }
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bool isComplete() { return m_state == END; }
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};
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class SOCKS4AServer {
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public:
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SOCKS4AServer(int port) : m_run(false),
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m_thread(nullptr),
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m_work(m_ios),
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m_acceptor(m_ios, boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(), port)),
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m_new_sock(nullptr) { }
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~SOCKS4AServer() { Stop(); }
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void Start();
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void Stop();
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boost::asio::io_service& GetService () { return m_ios; };
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private:
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void Run();
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void Accept();
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void HandleAccept(const boost::system::error_code& ecode);
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bool m_run;
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std::thread * m_thread;
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boost::asio::io_service m_ios;
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boost::asio::io_service::work m_work;
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boost::asio::ip::tcp::acceptor m_acceptor;
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boost::asio::ip::tcp::socket * m_new_sock;
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};
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typedef SOCKS4AServer SOCKSProxy;
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}
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}
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#endif
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