mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-11-16 00:12:43 +00:00
112 lines
4.0 KiB
C++
112 lines
4.0 KiB
C++
#ifndef NTCP2_H__
|
|
#define NTCP2_H__
|
|
|
|
#include <inttypes.h>
|
|
#include <memory>
|
|
#include <thread>
|
|
#include <boost/asio.hpp>
|
|
#include "RouterInfo.h"
|
|
#include "TransportSession.h"
|
|
|
|
namespace i2p
|
|
{
|
|
namespace transport
|
|
{
|
|
class NTCP2Server;
|
|
class NTCP2Session: public TransportSession, public std::enable_shared_from_this<NTCP2Session>
|
|
{
|
|
public:
|
|
|
|
NTCP2Session (NTCP2Server& server, std::shared_ptr<const i2p::data::RouterInfo> in_RemoteRouter = nullptr);
|
|
~NTCP2Session ();
|
|
void Terminate ();
|
|
void Done ();
|
|
|
|
boost::asio::ip::tcp::socket& GetSocket () { return m_Socket; };
|
|
|
|
void ClientLogin (); // Alice
|
|
void ServerLogin (); // Bob
|
|
void SendI2NPMessages (const std::vector<std::shared_ptr<I2NPMessage> >& msgs) {}; // TODO
|
|
|
|
private:
|
|
|
|
void MixKey (const uint8_t * inputKeyMaterial, uint8_t * derived);
|
|
void CreateNonce (uint64_t seqn, uint8_t * nonce);
|
|
void KeyDerivationFunction1 (const uint8_t * rs, const uint8_t * priv, const uint8_t * pub, uint8_t * derived); // for SessionRequest
|
|
void KeyDerivationFunction2 (const uint8_t * priv, const uint8_t * pub, const uint8_t * sessionRequest, size_t sessionRequestLen, uint8_t * derived); // for SessionCreate
|
|
void KeyDerivationFunction3 (const uint8_t * staticPrivKey, uint8_t * derived); // for SessionConfirmed part 2
|
|
void KeyDerivationFunctionDataPhase ();
|
|
|
|
// establish
|
|
void CreateEphemeralKey (uint8_t * pub);
|
|
void SendSessionRequest ();
|
|
void SendSessionCreated ();
|
|
void SendSessionConfirmed ();
|
|
|
|
void HandleSessionRequestSent (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
void HandleSessionRequestReceived (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
void HandleSessionRequestPaddingReceived (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
void HandleSessionCreatedSent (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
void HandleSessionCreatedReceived (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
void HandleSessionCreatedPaddingReceived (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
void HandleSessionConfirmedSent (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
|
|
// data
|
|
void ReceiveLength ();
|
|
void HandleReceivedLength (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
void Receive ();
|
|
void HandleReceived (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
void ProcessNextFrame (const uint8_t * frame, size_t len);
|
|
|
|
void SendNextFrame (const uint8_t * payload, size_t len);
|
|
void HandleNextFrameSent (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
|
|
private:
|
|
|
|
NTCP2Server& m_Server;
|
|
boost::asio::ip::tcp::socket m_Socket;
|
|
bool m_IsEstablished, m_IsTerminated;
|
|
|
|
uint8_t m_EphemeralPrivateKey[32]; // x25519
|
|
uint8_t m_RemoteStaticKey[32], m_IV[16], m_H[32] /*h*/, m_CK[33] /*ck*/, m_K[32] /* derived after SessionCreated */, m_Y[32] /* or X for Bob */;
|
|
uint8_t * m_SessionRequestBuffer, * m_SessionCreatedBuffer, * m_SessionConfirmedBuffer;
|
|
size_t m_SessionRequestBufferLen, m_SessionCreatedBufferLen;
|
|
// data phase
|
|
uint8_t m_Kab[33], m_Kba[32], m_Sipkeysab[33], m_Sipkeysba[32];
|
|
uint16_t m_NextReceivedLen;
|
|
uint8_t * m_NextReceivedBuffer, * m_NextSendBuffer;
|
|
uint8_t m_ReceiveIV[8], m_SendIV[8];
|
|
uint64_t m_ReceiveSequenceNumber, m_SendSequenceNumber;
|
|
};
|
|
|
|
class NTCP2Server
|
|
{
|
|
public:
|
|
|
|
NTCP2Server ();
|
|
~NTCP2Server ();
|
|
|
|
void Start ();
|
|
void Stop ();
|
|
|
|
boost::asio::io_service& GetService () { return m_Service; };
|
|
|
|
void Connect(const boost::asio::ip::address & address, uint16_t port, std::shared_ptr<NTCP2Session> conn);
|
|
|
|
private:
|
|
|
|
void Run ();
|
|
void HandleConnect (const boost::system::error_code& ecode, std::shared_ptr<NTCP2Session> conn);
|
|
|
|
private:
|
|
|
|
bool m_IsRunning;
|
|
std::thread * m_Thread;
|
|
boost::asio::io_service m_Service;
|
|
boost::asio::io_service::work m_Work;
|
|
};
|
|
}
|
|
}
|
|
|
|
#endif
|