mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2023-10-26 18:48:45 +03:00
256 lines
9.7 KiB
C++
256 lines
9.7 KiB
C++
/*
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* Copyright (c) 2013-2023, The PurpleI2P Project
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*
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* This file is part of Purple i2pd project and licensed under BSD3
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*
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* See full license text in LICENSE file at top of project tree
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*/
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#ifndef ROUTER_CONTEXT_H__
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#define ROUTER_CONTEXT_H__
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#include <inttypes.h>
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#include <string>
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#include <memory>
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#include <chrono>
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#include <set>
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#include <boost/asio.hpp>
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#include "Identity.h"
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#include "RouterInfo.h"
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#include "Garlic.h"
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#include "util.h"
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namespace i2p
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{
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namespace garlic
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{
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class RouterIncomingRatchetSession;
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}
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const char ROUTER_INFO[] = "router.info";
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const char ROUTER_KEYS[] = "router.keys";
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const char NTCP2_KEYS[] = "ntcp2.keys";
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const char SSU2_KEYS[] = "ssu2.keys";
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const int ROUTER_INFO_UPDATE_INTERVAL = 30*60; // 30 minutes
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const int ROUTER_INFO_PUBLISH_INTERVAL = 39*60; // in seconds
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const int ROUTER_INFO_INITIAL_PUBLISH_INTERVAL = 10; // in seconds
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const int ROUTER_INFO_PUBLISH_INTERVAL_VARIANCE = 105;// in seconds
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const int ROUTER_INFO_CONFIRMATION_TIMEOUT = 5; // in seconds
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const int ROUTER_INFO_MAX_PUBLISH_EXCLUDED_FLOODFILLS = 15;
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const int ROUTER_INFO_CONGESTION_UPDATE_INTERVAL = 12*60; // in seconds
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enum RouterStatus
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{
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eRouterStatusOK = 0,
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eRouterStatusFirewalled = 1,
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eRouterStatusUnknown = 2,
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eRouterStatusProxy = 3,
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eRouterStatusMesh = 4
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};
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enum RouterError
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{
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eRouterErrorNone = 0,
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eRouterErrorClockSkew = 1,
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eRouterErrorOffline = 2,
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eRouterErrorSymmetricNAT = 3,
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eRouterErrorFullConeNAT = 4,
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eRouterErrorNoDescriptors = 5
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};
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class RouterContext: public i2p::garlic::GarlicDestination
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{
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private:
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struct NTCP2PrivateKeys
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{
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uint8_t staticPublicKey[32];
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uint8_t staticPrivateKey[32];
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uint8_t iv[16];
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};
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struct SSU2PrivateKeys
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{
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uint8_t staticPublicKey[32];
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uint8_t staticPrivateKey[32];
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uint8_t intro[32];
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};
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class RouterService: public i2p::util::RunnableServiceWithWork
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{
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public:
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RouterService (): RunnableServiceWithWork ("Router") {};
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boost::asio::io_service& GetService () { return GetIOService (); };
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void Start () { StartIOService (); };
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void Stop () { StopIOService (); };
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};
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public:
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RouterContext ();
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void Init ();
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void Start ();
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void Stop ();
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const i2p::data::PrivateKeys& GetPrivateKeys () const { return m_Keys; };
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i2p::data::LocalRouterInfo& GetRouterInfo () { return m_RouterInfo; };
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std::shared_ptr<i2p::data::RouterInfo> GetSharedRouterInfo ()
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{
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return std::shared_ptr<i2p::data::RouterInfo> (&m_RouterInfo,
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[](i2p::data::RouterInfo *) {});
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}
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std::shared_ptr<i2p::garlic::GarlicDestination> GetSharedDestination ()
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{
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return std::shared_ptr<i2p::garlic::GarlicDestination> (this,
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[](i2p::garlic::GarlicDestination *) {});
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}
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const uint8_t * GetNTCP2StaticPublicKey () const { return m_NTCP2Keys ? m_NTCP2Keys->staticPublicKey : nullptr; };
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const uint8_t * GetNTCP2StaticPrivateKey () const { return m_NTCP2Keys ? m_NTCP2Keys->staticPrivateKey : nullptr; };
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const uint8_t * GetNTCP2IV () const { return m_NTCP2Keys ? m_NTCP2Keys->iv : nullptr; };
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i2p::crypto::X25519Keys& GetNTCP2StaticKeys ();
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const uint8_t * GetSSU2StaticPublicKey () const { return m_SSU2Keys ? m_SSU2Keys->staticPublicKey : nullptr; };
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const uint8_t * GetSSU2StaticPrivateKey () const { return m_SSU2Keys ? m_SSU2Keys->staticPrivateKey : nullptr; };
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const uint8_t * GetSSU2IntroKey () const { return m_SSU2Keys ? m_SSU2Keys->intro : nullptr; };
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i2p::crypto::X25519Keys& GetSSU2StaticKeys ();
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uint32_t GetUptime () const; // in seconds
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uint64_t GetLastUpdateTime () const { return m_LastUpdateTime; };
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uint64_t GetBandwidthLimit () const { return m_BandwidthLimit; };
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uint64_t GetTransitBandwidthLimit () const { return (m_BandwidthLimit*m_ShareRatio)/100LL; };
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bool GetTesting () const { return m_Testing; };
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void SetTesting (bool testing);
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RouterStatus GetStatus () const { return m_Status; };
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void SetStatus (RouterStatus status);
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RouterError GetError () const { return m_Error; };
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void SetError (RouterError error) { m_Error = error; };
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bool GetTestingV6 () const { return m_TestingV6; };
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void SetTestingV6 (bool testing);
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RouterStatus GetStatusV6 () const { return m_StatusV6; };
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void SetStatusV6 (RouterStatus status);
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RouterError GetErrorV6 () const { return m_ErrorV6; };
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void SetErrorV6 (RouterError error) { m_ErrorV6 = error; };
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int GetNetID () const { return m_NetID; };
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void SetNetID (int netID) { m_NetID = netID; };
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bool DecryptTunnelBuildRecord (const uint8_t * encrypted, uint8_t * data);
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bool DecryptTunnelShortRequestRecord (const uint8_t * encrypted, uint8_t * data);
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void UpdatePort (int port); // called from Daemon
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void UpdateAddress (const boost::asio::ip::address& host); // called from SSU2 or Daemon
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void PublishNTCP2Address (int port, bool publish, bool v4, bool v6, bool ygg);
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void PublishSSU2Address (int port, bool publish, bool v4, bool v6);
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bool AddSSU2Introducer (const i2p::data::RouterInfo::Introducer& introducer, bool v4);
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void RemoveSSU2Introducer (const i2p::data::IdentHash& h, bool v4);
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void ClearSSU2Introducers (bool v4);
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bool IsUnreachable () const;
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void SetUnreachable (bool v4, bool v6);
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void SetReachable (bool v4, bool v6);
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bool IsFloodfill () const { return m_IsFloodfill; };
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void SetFloodfill (bool floodfill);
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void SetFamily (const std::string& family);
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std::string GetFamily () const;
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void SetBandwidth (int limit); /* in kilobytes */
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void SetBandwidth (char L); /* by letter */
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void SetShareRatio (int percents); // 0 - 100
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bool AcceptsTunnels () const { return m_AcceptsTunnels; };
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void SetAcceptsTunnels (bool acceptsTunnels) { m_AcceptsTunnels = acceptsTunnels; };
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bool IsHighCongestion () const;
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bool SupportsV6 () const { return m_RouterInfo.IsV6 (); };
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bool SupportsV4 () const { return m_RouterInfo.IsV4 (); };
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bool SupportsMesh () const { return m_RouterInfo.IsMesh (); };
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void SetSupportsV6 (bool supportsV6);
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void SetSupportsV4 (bool supportsV4);
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void SetSupportsMesh (bool supportsmesh, const boost::asio::ip::address_v6& host);
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void SetMTU (int mtu, bool v4);
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void SetHidden(bool hide) { m_IsHiddenMode = hide; };
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bool IsHidden() const { return m_IsHiddenMode; };
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i2p::crypto::NoiseSymmetricState& GetCurrentNoiseState () { return m_CurrentNoiseState; };
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void UpdateNTCP2V6Address (const boost::asio::ip::address& host); // called from Daemon. TODO: remove
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void UpdateStats ();
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void UpdateTimestamp (uint64_t ts); // in seconds, called from NetDb before publishing
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void CleanupDestination (); // garlic destination
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// implements LocalDestination
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std::shared_ptr<const i2p::data::IdentityEx> GetIdentity () const { return m_Keys.GetPublic (); };
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bool Decrypt (const uint8_t * encrypted, uint8_t * data, i2p::data::CryptoKeyType preferredCrypto) const;
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void Sign (const uint8_t * buf, int len, uint8_t * signature) const { m_Keys.Sign (buf, len, signature); };
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void SetLeaseSetUpdated () {};
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// implements GarlicDestination
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std::shared_ptr<const i2p::data::LocalLeaseSet> GetLeaseSet () { return nullptr; };
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std::shared_ptr<i2p::tunnel::TunnelPool> GetTunnelPool () const;
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// override GarlicDestination
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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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protected:
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// implements GarlicDestination
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void HandleI2NPMessage (const uint8_t * buf, size_t len);
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bool HandleCloveI2NPMessage (I2NPMessageType typeID, const uint8_t * payload, size_t len, uint32_t msgID);
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private:
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void CreateNewRouter ();
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void NewRouterInfo ();
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void UpdateRouterInfo ();
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void NewNTCP2Keys ();
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void NewSSU2Keys ();
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void UpdateNTCP2Keys ();
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void UpdateSSU2Keys ();
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bool Load ();
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void SaveKeys ();
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uint16_t SelectRandomPort () const;
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void PublishNTCP2Address (std::shared_ptr<i2p::data::RouterInfo::Address> address, int port, bool publish) const;
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bool DecryptECIESTunnelBuildRecord (const uint8_t * encrypted, uint8_t * data, size_t clearTextSize);
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void PostGarlicMessage (std::shared_ptr<I2NPMessage> msg);
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void PostDeliveryStatusMessage (std::shared_ptr<I2NPMessage> msg);
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void ScheduleInitialPublish ();
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void HandleInitialPublishTimer (const boost::system::error_code& ecode);
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void SchedulePublish ();
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void HandlePublishTimer (const boost::system::error_code& ecode);
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void Publish ();
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void SchedulePublishResend ();
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void HandlePublishResendTimer (const boost::system::error_code& ecode);
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void ScheduleCongestionUpdate ();
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void HandleCongestionUpdateTimer (const boost::system::error_code& ecode);
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private:
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i2p::data::LocalRouterInfo m_RouterInfo;
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i2p::data::PrivateKeys m_Keys;
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std::shared_ptr<i2p::crypto::CryptoKeyDecryptor> m_Decryptor, m_TunnelDecryptor;
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std::shared_ptr<i2p::garlic::RouterIncomingRatchetSession> m_ECIESSession;
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uint64_t m_LastUpdateTime; // in seconds
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bool m_AcceptsTunnels, m_IsFloodfill;
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std::chrono::time_point<std::chrono::steady_clock> m_StartupTime;
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uint64_t m_BandwidthLimit; // allowed bandwidth
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int m_ShareRatio;
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RouterStatus m_Status, m_StatusV6;
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RouterError m_Error, m_ErrorV6;
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bool m_Testing, m_TestingV6;
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int m_NetID;
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std::unique_ptr<NTCP2PrivateKeys> m_NTCP2Keys;
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std::unique_ptr<SSU2PrivateKeys> m_SSU2Keys;
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std::unique_ptr<i2p::crypto::X25519Keys> m_NTCP2StaticKeys, m_SSU2StaticKeys;
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// for ECIESx25519
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i2p::crypto::NoiseSymmetricState m_InitialNoiseState, m_CurrentNoiseState;
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// publish
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std::unique_ptr<RouterService> m_Service;
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std::unique_ptr<boost::asio::deadline_timer> m_PublishTimer, m_CongestionUpdateTimer;
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std::set<i2p::data::IdentHash> m_PublishExcluded;
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uint32_t m_PublishReplyToken;
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bool m_IsHiddenMode; // not publish
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};
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extern RouterContext context;
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}
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#endif
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