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I2P: End-to-End encrypted and anonymous Internet
https://i2pd.website/
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157 lines
6.5 KiB
157 lines
6.5 KiB
#ifndef DESTINATION_H__ |
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#define DESTINATION_H__ |
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#include <thread> |
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#include <mutex> |
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#include <memory> |
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#include <map> |
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#include <set> |
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#include <string> |
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#include <functional> |
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#include <boost/asio.hpp> |
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#include "Identity.h" |
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#include "TunnelPool.h" |
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#include "Crypto.h" |
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#include "LeaseSet.h" |
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#include "Garlic.h" |
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#include "NetDb.h" |
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#include "Streaming.h" |
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#include "Datagram.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 uint8_t PROTOCOL_TYPE_STREAMING = 6; |
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const uint8_t PROTOCOL_TYPE_DATAGRAM = 17; |
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const uint8_t PROTOCOL_TYPE_RAW = 18; |
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const int PUBLISH_CONFIRMATION_TIMEOUT = 5; // in seconds |
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const int LEASESET_REQUEST_TIMEOUT = 5; // in seconds |
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const int MAX_LEASESET_REQUEST_TIMEOUT = 40; // in seconds |
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const int MAX_NUM_FLOODFILLS_PER_REQUEST = 7; |
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const int DESTINATION_CLEANUP_TIMEOUT = 20; // in minutes |
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// I2CP |
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const char I2CP_PARAM_INBOUND_TUNNEL_LENGTH[] = "inbound.length"; |
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const int DEFAULT_INBOUND_TUNNEL_LENGTH = 3; |
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const char I2CP_PARAM_OUTBOUND_TUNNEL_LENGTH[] = "outbound.length"; |
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const int DEFAULT_OUTBOUND_TUNNEL_LENGTH = 3; |
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const char I2CP_PARAM_INBOUND_TUNNELS_QUANTITY[] = "inbound.quantity"; |
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const int DEFAULT_INBOUND_TUNNELS_QUANTITY = 5; |
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const char I2CP_PARAM_OUTBOUND_TUNNELS_QUANTITY[] = "outbound.quantity"; |
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const int DEFAULT_OUTBOUND_TUNNELS_QUANTITY = 5; |
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const char I2CP_PARAM_EXPLICIT_PEERS[] = "explicitPeers"; |
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const int STREAM_REQUEST_TIMEOUT = 60; //in seconds |
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typedef std::function<void (std::shared_ptr<i2p::stream::Stream> stream)> StreamRequestComplete; |
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class ClientDestination: public i2p::garlic::GarlicDestination, |
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public std::enable_shared_from_this<ClientDestination> |
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{ |
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typedef std::function<void (std::shared_ptr<i2p::data::LeaseSet> leaseSet)> RequestComplete; |
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// leaseSet = nullptr means not found |
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struct LeaseSetRequest |
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{ |
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LeaseSetRequest (boost::asio::io_service& service): requestTime (0), requestTimeoutTimer (service) {}; |
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std::set<i2p::data::IdentHash> excluded; |
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uint64_t requestTime; |
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boost::asio::deadline_timer requestTimeoutTimer; |
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RequestComplete requestComplete; |
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}; |
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public: |
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ClientDestination (const i2p::data::PrivateKeys& keys, bool isPublic, const std::map<std::string, std::string> * params = nullptr); |
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~ClientDestination (); |
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virtual void Start (); |
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virtual void Stop (); |
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bool IsRunning () const { return m_IsRunning; }; |
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boost::asio::io_service& GetService () { return m_Service; }; |
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std::shared_ptr<i2p::tunnel::TunnelPool> GetTunnelPool () { return m_Pool; }; |
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bool IsReady () const { return m_LeaseSet && m_LeaseSet->HasNonExpiredLeases () && m_Pool->GetOutboundTunnels ().size () > 0; }; |
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std::shared_ptr<const i2p::data::LeaseSet> FindLeaseSet (const i2p::data::IdentHash& ident); |
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bool RequestDestination (const i2p::data::IdentHash& dest, RequestComplete requestComplete = nullptr); |
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// streaming |
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std::shared_ptr<i2p::stream::StreamingDestination> CreateStreamingDestination (int port); // additional |
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std::shared_ptr<i2p::stream::StreamingDestination> GetStreamingDestination (int port = 0) const; |
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// following methods operate with default streaming destination |
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void CreateStream (StreamRequestComplete streamRequestComplete, const i2p::data::IdentHash& dest, int port = 0); |
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std::shared_ptr<i2p::stream::Stream> CreateStream (std::shared_ptr<const i2p::data::LeaseSet> remote, int port = 0); |
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void AcceptStreams (const i2p::stream::StreamingDestination::Acceptor& acceptor); |
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void StopAcceptingStreams (); |
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bool IsAcceptingStreams () const; |
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// datagram |
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i2p::datagram::DatagramDestination * GetDatagramDestination () const { return m_DatagramDestination; }; |
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i2p::datagram::DatagramDestination * CreateDatagramDestination (); |
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// implements LocalDestination |
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const i2p::data::PrivateKeys& GetPrivateKeys () const { return m_Keys; }; |
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const uint8_t * GetEncryptionPrivateKey () const { return m_EncryptionPrivateKey; }; |
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const uint8_t * GetEncryptionPublicKey () const { return m_EncryptionPublicKey; }; |
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// implements GarlicDestination |
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std::shared_ptr<const i2p::data::LeaseSet> GetLeaseSet (); |
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std::shared_ptr<i2p::tunnel::TunnelPool> GetTunnelPool () const { return m_Pool; } |
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void HandleI2NPMessage (const uint8_t * buf, size_t len, std::shared_ptr<i2p::tunnel::InboundTunnel> from); |
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// override GarlicDestination |
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bool SubmitSessionKey (const uint8_t * key, const uint8_t * tag); |
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void ProcessGarlicMessage (std::shared_ptr<I2NPMessage> msg); |
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void ProcessDeliveryStatusMessage (std::shared_ptr<I2NPMessage> msg); |
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void SetLeaseSetUpdated (); |
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// I2CP |
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void HandleDataMessage (const uint8_t * buf, size_t len); |
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private: |
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void Run (); |
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void UpdateLeaseSet (); |
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void Publish (); |
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void HandlePublishConfirmationTimer (const boost::system::error_code& ecode); |
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void HandleDatabaseStoreMessage (const uint8_t * buf, size_t len); |
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void HandleDatabaseSearchReplyMessage (const uint8_t * buf, size_t len); |
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void HandleDeliveryStatusMessage (std::shared_ptr<I2NPMessage> msg); |
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void RequestLeaseSet (const i2p::data::IdentHash& dest, RequestComplete requestComplete); |
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bool SendLeaseSetRequest (const i2p::data::IdentHash& dest, std::shared_ptr<const i2p::data::RouterInfo> nextFloodfill, std::shared_ptr<LeaseSetRequest> request); |
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void HandleRequestTimoutTimer (const boost::system::error_code& ecode, const i2p::data::IdentHash& dest); |
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void HandleCleanupTimer (const boost::system::error_code& ecode); |
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void CleanupRemoteLeaseSets (); |
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private: |
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volatile bool m_IsRunning; |
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std::thread * m_Thread; |
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boost::asio::io_service m_Service; |
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boost::asio::io_service::work m_Work; |
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i2p::data::PrivateKeys m_Keys; |
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uint8_t m_EncryptionPublicKey[256], m_EncryptionPrivateKey[256]; |
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std::map<i2p::data::IdentHash, std::shared_ptr<i2p::data::LeaseSet> > m_RemoteLeaseSets; |
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std::map<i2p::data::IdentHash, std::shared_ptr<LeaseSetRequest> > m_LeaseSetRequests; |
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std::shared_ptr<i2p::tunnel::TunnelPool> m_Pool; |
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std::shared_ptr<i2p::data::LeaseSet> m_LeaseSet; |
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bool m_IsPublic; |
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uint32_t m_PublishReplyToken; |
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std::set<i2p::data::IdentHash> m_ExcludedFloodfills; // for publishing |
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std::shared_ptr<i2p::stream::StreamingDestination> m_StreamingDestination; // default |
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std::map<uint16_t, std::shared_ptr<i2p::stream::StreamingDestination> > m_StreamingDestinationsByPorts; |
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i2p::datagram::DatagramDestination * m_DatagramDestination; |
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boost::asio::deadline_timer m_PublishConfirmationTimer, m_CleanupTimer; |
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public: |
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// for HTTP only |
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int GetNumRemoteLeaseSets () const { return m_RemoteLeaseSets.size (); }; |
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}; |
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} |
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} |
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#endif
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