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#ifndef I2PTUNNEL_H__
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#define I2PTUNNEL_H__
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#include <inttypes.h>
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#include <string>
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#include <set>
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#include <memory>
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#include <boost/asio.hpp>
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#include "Identity.h"
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#include "Destination.h"
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#include "Streaming.h"
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namespace i2p
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{
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namespace client
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{
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const size_t I2P_TUNNEL_CONNECTION_BUFFER_SIZE = 8192;
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const int I2P_TUNNEL_CONNECTION_MAX_IDLE = 3600; // in seconds
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const int I2P_TUNNEL_DESTINATION_REQUEST_TIMEOUT = 10; // in seconds
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class I2PTunnel;
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class I2PTunnelConnection: public std::enable_shared_from_this<I2PTunnelConnection>
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{
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public:
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I2PTunnelConnection (I2PTunnel * owner, boost::asio::ip::tcp::socket * socket,
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const i2p::data::LeaseSet * leaseSet); // to I2P
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I2PTunnelConnection (I2PTunnel * owner, std::shared_ptr<i2p::stream::Stream> stream, boost::asio::ip::tcp::socket * socket,
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const boost::asio::ip::tcp::endpoint& target, bool quiet = true); // from I2P
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~I2PTunnelConnection ();
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void I2PConnect (const uint8_t * msg = nullptr, size_t len = 0);
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void Connect ();
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private:
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void Terminate ();
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void Receive ();
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void HandleReceived (const boost::system::error_code& ecode, std::size_t bytes_transferred);
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void HandleWrite (const boost::system::error_code& ecode);
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void StreamReceive ();
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void HandleStreamReceive (const boost::system::error_code& ecode, std::size_t bytes_transferred);
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void HandleConnect (const boost::system::error_code& ecode);
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private:
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uint8_t m_Buffer[I2P_TUNNEL_CONNECTION_BUFFER_SIZE], m_StreamBuffer[I2P_TUNNEL_CONNECTION_BUFFER_SIZE];
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boost::asio::ip::tcp::socket * m_Socket;
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std::shared_ptr<i2p::stream::Stream> m_Stream;
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I2PTunnel * m_Owner;
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boost::asio::ip::tcp::endpoint m_RemoteEndpoint;
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bool m_IsQuiet; // don't send destination
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};
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class I2PTunnel
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{
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public:
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I2PTunnel (boost::asio::io_service& service, ClientDestination * localDestination):
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m_Service (service), m_LocalDestination (localDestination) {};
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virtual ~I2PTunnel () { ClearConnections (); };
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virtual void Start () {};
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virtual void Stop () {};
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void AddConnection (std::shared_ptr<I2PTunnelConnection> conn);
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void RemoveConnection (std::shared_ptr<I2PTunnelConnection> conn);
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void ClearConnections ();
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ClientDestination * GetLocalDestination () { return m_LocalDestination; };
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void SetLocalDestination (ClientDestination * dest) { m_LocalDestination = dest; };
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boost::asio::io_service& GetService () { return m_Service; };
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private:
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boost::asio::io_service& m_Service;
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ClientDestination * m_LocalDestination;
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std::set<std::shared_ptr<I2PTunnelConnection> > m_Connections;
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};
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class I2PClientTunnel: public I2PTunnel
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{
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public:
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I2PClientTunnel (boost::asio::io_service& service, const std::string& destination, int port,
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ClientDestination * localDestination = nullptr);
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~I2PClientTunnel ();
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void Start ();
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void Stop ();
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private:
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void Accept ();
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void HandleAccept (const boost::system::error_code& ecode, boost::asio::ip::tcp::socket * socket);
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void HandleDestinationRequestTimer (const boost::system::error_code& ecode, boost::asio::ip::tcp::socket * socket);
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void CreateConnection (boost::asio::ip::tcp::socket * socket);
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private:
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boost::asio::ip::tcp::acceptor m_Acceptor;
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boost::asio::deadline_timer m_Timer;
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std::string m_Destination;
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const i2p::data::IdentHash * m_DestinationIdentHash;
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const i2p::data::LeaseSet * m_RemoteLeaseSet;
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};
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class I2PServerTunnel: public I2PTunnel
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{
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public:
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I2PServerTunnel (boost::asio::io_service& service, const std::string& address, int port,
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ClientDestination * localDestination);
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void Start ();
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void Stop ();
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private:
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void Accept ();
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void HandleAccept (std::shared_ptr<i2p::stream::Stream> stream);
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private:
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boost::asio::ip::tcp::endpoint m_Endpoint;
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};
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}
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}
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#endif
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