I2P: End-to-End encrypted and anonymous Internet https://i2pd.website/
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#ifndef I2PTUNNEL_H__
#define I2PTUNNEL_H__
#include <inttypes.h>
#include <string>
#include <set>
#include <memory>
#include <boost/asio.hpp>
#include "Identity.h"
#include "Destination.h"
#include "Streaming.h"
namespace i2p
{
namespace client
{
const size_t I2P_TUNNEL_CONNECTION_BUFFER_SIZE = 8192;
const int I2P_TUNNEL_CONNECTION_MAX_IDLE = 3600; // in seconds
const int I2P_TUNNEL_DESTINATION_REQUEST_TIMEOUT = 10; // in seconds
const i2p::data::SigningKeyType I2P_TUNNEL_DEFAULT_KEY_TYPE = i2p::data::SIGNING_KEY_TYPE_ECDSA_SHA256_P256;
class I2PTunnel;
class I2PTunnelConnection: public std::enable_shared_from_this<I2PTunnelConnection>
{
public:
I2PTunnelConnection (I2PTunnel * owner, boost::asio::ip::tcp::socket * socket,
const i2p::data::LeaseSet * leaseSet); // to I2P
I2PTunnelConnection (I2PTunnel * owner, boost::asio::ip::tcp::socket * socket,
std::shared_ptr<i2p::stream::Stream> stream); // to I2P using simplified API :)
I2PTunnelConnection (I2PTunnel * owner, std::shared_ptr<i2p::stream::Stream> stream, boost::asio::ip::tcp::socket * socket,
const boost::asio::ip::tcp::endpoint& target, bool quiet = true); // from I2P
~I2PTunnelConnection ();
void I2PConnect (const uint8_t * msg = nullptr, size_t len = 0);
void Connect ();
private:
void Terminate ();
void Receive ();
void HandleReceived (const boost::system::error_code& ecode, std::size_t bytes_transferred);
void HandleWrite (const boost::system::error_code& ecode);
void StreamReceive ();
void HandleStreamReceive (const boost::system::error_code& ecode, std::size_t bytes_transferred);
void HandleConnect (const boost::system::error_code& ecode);
private:
uint8_t m_Buffer[I2P_TUNNEL_CONNECTION_BUFFER_SIZE], m_StreamBuffer[I2P_TUNNEL_CONNECTION_BUFFER_SIZE];
boost::asio::ip::tcp::socket * m_Socket;
std::shared_ptr<i2p::stream::Stream> m_Stream;
I2PTunnel * m_Owner;
boost::asio::ip::tcp::endpoint m_RemoteEndpoint;
bool m_IsQuiet; // don't send destination
};
class I2PTunnel
{
public:
I2PTunnel (ClientDestination * localDestination = nullptr);
virtual ~I2PTunnel () { ClearConnections (); };
void AddConnection (std::shared_ptr<I2PTunnelConnection> conn);
void RemoveConnection (std::shared_ptr<I2PTunnelConnection> conn);
void ClearConnections ();
ClientDestination * GetLocalDestination () { return m_LocalDestination; };
void SetLocalDestination (ClientDestination * dest) { m_LocalDestination = dest; };
boost::asio::io_service& GetService () { return m_LocalDestination->GetService (); };
private:
ClientDestination * m_LocalDestination;
std::set<std::shared_ptr<I2PTunnelConnection> > m_Connections;
};
class I2PClientTunnel: public I2PTunnel
{
public:
I2PClientTunnel (const std::string& destination, int port, ClientDestination * localDestination = nullptr);
~I2PClientTunnel ();
void Start ();
void Stop ();
private:
const i2p::data::IdentHash * GetIdentHash ();
void Accept ();
void HandleAccept (const boost::system::error_code& ecode, boost::asio::ip::tcp::socket * socket);
void HandleStreamRequestComplete (std::shared_ptr<i2p::stream::Stream> stream, boost::asio::ip::tcp::socket * socket);
private:
boost::asio::ip::tcp::acceptor m_Acceptor;
boost::asio::deadline_timer m_Timer;
std::string m_Destination;
const i2p::data::IdentHash * m_DestinationIdentHash;
};
class I2PServerTunnel: public I2PTunnel
{
public:
I2PServerTunnel (const std::string& address, int port, ClientDestination * localDestination);
void Start ();
void Stop ();
private:
void Accept ();
void HandleAccept (std::shared_ptr<i2p::stream::Stream> stream);
private:
boost::asio::ip::tcp::endpoint m_Endpoint;
};
}
}
#endif