#ifndef TRANSIT_TUNNEL_H__ #define TRANSIT_TUNNEL_H__ #include <inttypes.h> #include <vector> #include <mutex> #include <memory> #include "Crypto.h" #include "I2NPProtocol.h" #include "TunnelEndpoint.h" #include "TunnelGateway.h" #include "TunnelBase.h" namespace i2p { namespace tunnel { class TransitTunnel: public TunnelBase { public: TransitTunnel (uint32_t receiveTunnelID, const uint8_t * nextIdent, uint32_t nextTunnelID, const uint8_t * layerKey,const uint8_t * ivKey); virtual size_t GetNumTransmittedBytes () const { return 0; }; // implements TunnelBase void SendTunnelDataMsg (std::shared_ptr<i2p::I2NPMessage> msg); void HandleTunnelDataMsg (std::shared_ptr<const i2p::I2NPMessage> tunnelMsg); void EncryptTunnelMsg (std::shared_ptr<const I2NPMessage> in, std::shared_ptr<I2NPMessage> out); private: i2p::crypto::TunnelEncryption m_Encryption; }; class TransitTunnelParticipant: public TransitTunnel { public: TransitTunnelParticipant (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_NumTransmittedBytes (0) {}; ~TransitTunnelParticipant (); size_t GetNumTransmittedBytes () const { return m_NumTransmittedBytes; }; void HandleTunnelDataMsg (std::shared_ptr<const i2p::I2NPMessage> tunnelMsg); void FlushTunnelDataMsgs (); private: size_t m_NumTransmittedBytes; std::vector<std::shared_ptr<i2p::I2NPMessage> > m_TunnelDataMsgs; }; 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 (std::shared_ptr<i2p::I2NPMessage> msg); void FlushTunnelDataMsgs (); size_t GetNumTransmittedBytes () const { return m_Gateway.GetNumSentBytes (); }; private: std::mutex m_SendMutex; 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), m_Endpoint (false) {}; // transit endpoint is always outbound void HandleTunnelDataMsg (std::shared_ptr<const i2p::I2NPMessage> tunnelMsg); size_t GetNumTransmittedBytes () const { return m_Endpoint.GetNumReceivedBytes (); } private: TunnelEndpoint m_Endpoint; }; std::shared_ptr<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