I2P: End-to-End encrypted and anonymous Internet https://i2pd.website/
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#ifndef TRANSIT_TUNNEL_H__
#define TRANSIT_TUNNEL_H__
#include <inttypes.h>
#include <cryptopp/modes.h>
#include <cryptopp/aes.h>
#include "I2NPProtocol.h"
#include "TunnelEndpoint.h"
#include "TunnelGateway.h"
#include "TunnelBase.h"
namespace i2p
{
namespace tunnel
{
class TransitTunnel: public TunnelBase // tunnel patricipant
{
public:
TransitTunnel (uint32_t receiveTunnelID,
const uint8_t * nextIdent, uint32_t nextTunnelID,
const uint8_t * layerKey,const uint8_t * ivKey);
virtual void HandleTunnelDataMsg (i2p::I2NPMessage * tunnelMsg);
virtual void SendTunnelDataMsg (const uint8_t * gwHash, uint32_t gwTunnel, i2p::I2NPMessage * msg);
virtual size_t GetNumTransmittedBytes () const { return m_NumTransmittedBytes; };
uint32_t GetTunnelID () const { return m_TunnelID; };
// implements TunnelBase
void EncryptTunnelMsg (I2NPMessage * tunnelMsg);
uint32_t GetNextTunnelID () const { return m_NextTunnelID; };
const i2p::data::IdentHash& GetNextIdentHash () const { return m_NextIdent; };
private:
uint32_t m_TunnelID, m_NextTunnelID;
i2p::data::IdentHash m_NextIdent;
uint8_t m_LayerKey[32];
uint8_t m_IVKey[32];
size_t m_NumTransmittedBytes;
CryptoPP::ECB_Mode<CryptoPP::AES>::Encryption m_ECBEncryption;
CryptoPP::CBC_Mode<CryptoPP::AES>::Encryption m_CBCEncryption;
};
class TransitTunnelGateway: public TransitTunnel
{
public:
TransitTunnelGateway (uint32_t receiveTunnelID,
const uint8_t * nextIdent, uint32_t nextTunnelID,
const uint8_t * layerKey,const uint8_t * ivKey):
TransitTunnel (receiveTunnelID, nextIdent, nextTunnelID,
layerKey, ivKey), m_Gateway(this) {};
void SendTunnelDataMsg (const uint8_t * gwHash, uint32_t gwTunnel, i2p::I2NPMessage * msg);
size_t GetNumTransmittedBytes () const { return m_Gateway.GetNumSentBytes (); };
private:
TunnelGateway m_Gateway;
};
class TransitTunnelEndpoint: public TransitTunnel
{
public:
TransitTunnelEndpoint (uint32_t receiveTunnelID,
const uint8_t * nextIdent, uint32_t nextTunnelID,
const uint8_t * layerKey,const uint8_t * ivKey):
TransitTunnel (receiveTunnelID, nextIdent, nextTunnelID, layerKey, ivKey) {};
void HandleTunnelDataMsg (i2p::I2NPMessage * tunnelMsg);
size_t GetNumTransmittedBytes () const { return m_Endpoint.GetNumReceivedBytes (); }
private:
TunnelEndpoint m_Endpoint;
};
TransitTunnel * CreateTransitTunnel (uint32_t receiveTunnelID,
const uint8_t * nextIdent, uint32_t nextTunnelID,
const uint8_t * layerKey,const uint8_t * ivKey,
bool isGateway, bool isEndpoint);
}
}
#endif