mirror of https://github.com/PurpleI2P/i2pd.git
I2P: End-to-End encrypted and anonymous Internet
https://i2pd.website/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
271 lines
10 KiB
271 lines
10 KiB
/* |
|
* Copyright (c) 2013-2024, The PurpleI2P Project |
|
* |
|
* This file is part of Purple i2pd project and licensed under BSD3 |
|
* |
|
* See full license text in LICENSE file at top of project tree |
|
*/ |
|
|
|
#ifndef ROUTER_CONTEXT_H__ |
|
#define ROUTER_CONTEXT_H__ |
|
|
|
#include <inttypes.h> |
|
#include <string> |
|
#include <memory> |
|
#include <unordered_set> |
|
#include <boost/asio.hpp> |
|
#include "Identity.h" |
|
#include "RouterInfo.h" |
|
#include "Garlic.h" |
|
#include "util.h" |
|
|
|
namespace i2p |
|
{ |
|
namespace garlic |
|
{ |
|
class RouterIncomingRatchetSession; |
|
} |
|
|
|
const char ROUTER_INFO[] = "router.info"; |
|
const char ROUTER_KEYS[] = "router.keys"; |
|
const char NTCP2_KEYS[] = "ntcp2.keys"; |
|
const char SSU2_KEYS[] = "ssu2.keys"; |
|
const int ROUTER_INFO_UPDATE_INTERVAL = 30*60; // 30 minutes |
|
const int ROUTER_INFO_PUBLISH_INTERVAL = 39*60; // in seconds |
|
const int ROUTER_INFO_INITIAL_PUBLISH_INTERVAL = 10; // in seconds |
|
const int ROUTER_INFO_PUBLISH_INTERVAL_VARIANCE = 105;// in seconds |
|
const int ROUTER_INFO_CONFIRMATION_TIMEOUT = 5; // in seconds |
|
const int ROUTER_INFO_MAX_PUBLISH_EXCLUDED_FLOODFILLS = 15; |
|
const int ROUTER_INFO_CONGESTION_UPDATE_INTERVAL = 12*60; // in seconds |
|
const int ROUTER_INFO_CLEANUP_INTERVAL = 102; // in seconds |
|
|
|
enum RouterStatus |
|
{ |
|
eRouterStatusOK = 0, |
|
eRouterStatusFirewalled = 1, |
|
eRouterStatusUnknown = 2, |
|
eRouterStatusProxy = 3, |
|
eRouterStatusMesh = 4 |
|
}; |
|
|
|
const char* const ROUTER_STATUS_NAMES[] = |
|
{ |
|
"OK", // 0 |
|
"Firewalled", // 1 |
|
"Unknown", // 2 |
|
"Proxy", // 3 |
|
"Mesh" // 4 |
|
}; |
|
|
|
enum RouterError |
|
{ |
|
eRouterErrorNone = 0, |
|
eRouterErrorClockSkew = 1, |
|
eRouterErrorOffline = 2, |
|
eRouterErrorSymmetricNAT = 3, |
|
eRouterErrorFullConeNAT = 4, |
|
eRouterErrorNoDescriptors = 5 |
|
}; |
|
|
|
class RouterContext: public i2p::garlic::GarlicDestination |
|
{ |
|
private: |
|
|
|
struct NTCP2PrivateKeys |
|
{ |
|
uint8_t staticPublicKey[32]; |
|
uint8_t staticPrivateKey[32]; |
|
uint8_t iv[16]; |
|
}; |
|
|
|
struct SSU2PrivateKeys |
|
{ |
|
uint8_t staticPublicKey[32]; |
|
uint8_t staticPrivateKey[32]; |
|
uint8_t intro[32]; |
|
}; |
|
|
|
class RouterService: public i2p::util::RunnableServiceWithWork |
|
{ |
|
public: |
|
|
|
RouterService (): RunnableServiceWithWork ("Router") {}; |
|
boost::asio::io_service& GetService () { return GetIOService (); }; |
|
void Start () { StartIOService (); }; |
|
void Stop () { StopIOService (); }; |
|
}; |
|
|
|
public: |
|
|
|
RouterContext (); |
|
void Init (); |
|
void Start (); |
|
void Stop (); |
|
|
|
const i2p::data::PrivateKeys& GetPrivateKeys () const { return m_Keys; }; |
|
i2p::data::LocalRouterInfo& GetRouterInfo () { return m_RouterInfo; }; |
|
std::shared_ptr<i2p::data::RouterInfo> GetSharedRouterInfo () |
|
{ |
|
return std::shared_ptr<i2p::data::RouterInfo> (&m_RouterInfo, |
|
[](i2p::data::RouterInfo *) {}); |
|
} |
|
std::shared_ptr<i2p::garlic::GarlicDestination> GetSharedDestination () |
|
{ |
|
return std::shared_ptr<i2p::garlic::GarlicDestination> (this, |
|
[](i2p::garlic::GarlicDestination *) {}); |
|
} |
|
std::shared_ptr<i2p::data::RouterInfo::Buffer> CopyRouterInfoBuffer () const; |
|
|
|
const uint8_t * GetNTCP2StaticPublicKey () const { return m_NTCP2Keys ? m_NTCP2Keys->staticPublicKey : nullptr; }; |
|
const uint8_t * GetNTCP2StaticPrivateKey () const { return m_NTCP2Keys ? m_NTCP2Keys->staticPrivateKey : nullptr; }; |
|
const uint8_t * GetNTCP2IV () const { return m_NTCP2Keys ? m_NTCP2Keys->iv : nullptr; }; |
|
i2p::crypto::X25519Keys& GetNTCP2StaticKeys (); |
|
|
|
const uint8_t * GetSSU2StaticPublicKey () const { return m_SSU2Keys ? m_SSU2Keys->staticPublicKey : nullptr; }; |
|
const uint8_t * GetSSU2StaticPrivateKey () const { return m_SSU2Keys ? m_SSU2Keys->staticPrivateKey : nullptr; }; |
|
const uint8_t * GetSSU2IntroKey () const { return m_SSU2Keys ? m_SSU2Keys->intro : nullptr; }; |
|
i2p::crypto::X25519Keys& GetSSU2StaticKeys (); |
|
|
|
uint32_t GetUptime () const; // in seconds |
|
uint64_t GetLastUpdateTime () const { return m_LastUpdateTime; }; |
|
uint64_t GetBandwidthLimit () const { return m_BandwidthLimit; }; |
|
uint64_t GetTransitBandwidthLimit () const { return (m_BandwidthLimit*m_ShareRatio)/100LL; }; |
|
bool GetTesting () const { return m_Testing; }; |
|
void SetTesting (bool testing); |
|
RouterStatus GetStatus () const { return m_Status; }; |
|
void SetStatus (RouterStatus status); |
|
RouterError GetError () const { return m_Error; }; |
|
void SetError (RouterError error) { m_Error = error; }; |
|
bool GetTestingV6 () const { return m_TestingV6; }; |
|
void SetTestingV6 (bool testing); |
|
RouterStatus GetStatusV6 () const { return m_StatusV6; }; |
|
void SetStatusV6 (RouterStatus status); |
|
RouterError GetErrorV6 () const { return m_ErrorV6; }; |
|
void SetErrorV6 (RouterError error) { m_ErrorV6 = error; }; |
|
int GetNetID () const { return m_NetID; }; |
|
void SetNetID (int netID) { m_NetID = netID; }; |
|
bool DecryptTunnelBuildRecord (const uint8_t * encrypted, uint8_t * data); |
|
bool DecryptTunnelShortRequestRecord (const uint8_t * encrypted, uint8_t * data); |
|
|
|
void UpdatePort (int port); // called from Daemon |
|
void UpdateAddress (const boost::asio::ip::address& host); // called from SSU2 or Daemon |
|
void PublishNTCP2Address (int port, bool publish, bool v4, bool v6, bool ygg); |
|
void PublishSSU2Address (int port, bool publish, bool v4, bool v6); |
|
bool AddSSU2Introducer (const i2p::data::RouterInfo::Introducer& introducer, bool v4); |
|
void RemoveSSU2Introducer (const i2p::data::IdentHash& h, bool v4); |
|
void UpdateSSU2Introducer (const i2p::data::IdentHash& h, bool v4, uint32_t iTag, uint32_t iExp); |
|
void ClearSSU2Introducers (bool v4); |
|
bool IsUnreachable () const; |
|
void SetUnreachable (bool v4, bool v6); |
|
void SetReachable (bool v4, bool v6); |
|
bool IsFloodfill () const { return m_IsFloodfill; }; |
|
void SetFloodfill (bool floodfill); |
|
void SetFamily (const std::string& family); |
|
std::string GetFamily () const; |
|
void SetBandwidth (int limit); /* in kilobytes */ |
|
void SetBandwidth (char L); /* by letter */ |
|
void SetShareRatio (int percents); // 0 - 100 |
|
bool AcceptsTunnels () const { return m_AcceptsTunnels; }; |
|
void SetAcceptsTunnels (bool acceptsTunnels) { m_AcceptsTunnels = acceptsTunnels; }; |
|
int GetCongestionLevel (bool longTerm) const; |
|
bool SupportsV6 () const { return m_RouterInfo.IsV6 (); }; |
|
bool SupportsV4 () const { return m_RouterInfo.IsV4 (); }; |
|
bool SupportsMesh () const { return m_RouterInfo.IsMesh (); }; |
|
void SetSupportsV6 (bool supportsV6); |
|
void SetSupportsV4 (bool supportsV4); |
|
void SetSupportsMesh (bool supportsmesh, const boost::asio::ip::address_v6& host); |
|
void SetMTU (int mtu, bool v4); |
|
void SetHidden(bool hide) { m_IsHiddenMode = hide; }; |
|
bool IsHidden() const { return m_IsHiddenMode; }; |
|
bool IsLimitedConnectivity () const { return m_Status == eRouterStatusProxy; }; // TODO: implement other cases |
|
i2p::crypto::NoiseSymmetricState& GetCurrentNoiseState () { return m_CurrentNoiseState; }; |
|
|
|
void UpdateNTCP2V6Address (const boost::asio::ip::address& host); // called from Daemon. TODO: remove |
|
void UpdateStats (); |
|
void UpdateTimestamp (uint64_t ts); // in seconds, called from NetDb before publishing |
|
|
|
// implements LocalDestination |
|
std::shared_ptr<const i2p::data::IdentityEx> GetIdentity () const override{ return m_Keys.GetPublic (); }; |
|
bool Decrypt (const uint8_t * encrypted, uint8_t * data, i2p::data::CryptoKeyType preferredCrypto) const override; |
|
void SetLeaseSetUpdated (bool post) override {}; |
|
|
|
// implements GarlicDestination |
|
std::shared_ptr<const i2p::data::LocalLeaseSet> GetLeaseSet () override { return nullptr; }; |
|
std::shared_ptr<i2p::tunnel::TunnelPool> GetTunnelPool () const override; |
|
|
|
// override GarlicDestination |
|
void ProcessGarlicMessage (std::shared_ptr<I2NPMessage> msg) override; |
|
void ProcessDeliveryStatusMessage (std::shared_ptr<I2NPMessage> msg) override; |
|
void SubmitECIESx25519Key (const uint8_t * key, uint64_t tag) override; |
|
|
|
protected: |
|
|
|
// implements GarlicDestination |
|
void HandleI2NPMessage (const uint8_t * buf, size_t len) override; |
|
bool HandleCloveI2NPMessage (I2NPMessageType typeID, const uint8_t * payload, size_t len, uint32_t msgID) override; |
|
|
|
private: |
|
|
|
void CreateNewRouter (); |
|
void NewRouterInfo (); |
|
void UpdateRouterInfo (); |
|
void NewNTCP2Keys (); |
|
void NewSSU2Keys (); |
|
void UpdateNTCP2Keys (); |
|
void UpdateSSU2Keys (); |
|
bool Load (); |
|
void SaveKeys (); |
|
void Sign (const uint8_t * buf, int len, uint8_t * signature) const { m_Keys.Sign (buf, len, signature); }; |
|
uint16_t SelectRandomPort () const; |
|
void PublishNTCP2Address (std::shared_ptr<i2p::data::RouterInfo::Address> address, int port, bool publish) const; |
|
|
|
bool DecryptECIESTunnelBuildRecord (const uint8_t * encrypted, uint8_t * data, size_t clearTextSize); |
|
void PostGarlicMessage (std::shared_ptr<I2NPMessage> msg); |
|
void PostDeliveryStatusMessage (std::shared_ptr<I2NPMessage> msg); |
|
|
|
void ScheduleInitialPublish (); |
|
void HandleInitialPublishTimer (const boost::system::error_code& ecode); |
|
void SchedulePublish (); |
|
void HandlePublishTimer (const boost::system::error_code& ecode); |
|
void Publish (); |
|
void SchedulePublishResend (); |
|
void HandlePublishResendTimer (const boost::system::error_code& ecode); |
|
void ScheduleCongestionUpdate (); |
|
void HandleCongestionUpdateTimer (const boost::system::error_code& ecode); |
|
void UpdateCongestion (); |
|
void ScheduleCleanupTimer (); |
|
void HandleCleanupTimer (const boost::system::error_code& ecode); |
|
|
|
private: |
|
|
|
i2p::data::LocalRouterInfo m_RouterInfo; |
|
i2p::data::PrivateKeys m_Keys; |
|
std::shared_ptr<i2p::crypto::CryptoKeyDecryptor> m_Decryptor, m_TunnelDecryptor; |
|
std::shared_ptr<i2p::garlic::RouterIncomingRatchetSession> m_ECIESSession; |
|
uint64_t m_LastUpdateTime; // in seconds |
|
bool m_AcceptsTunnels, m_IsFloodfill; |
|
uint64_t m_StartupTime; // monotonic seconds |
|
uint64_t m_BandwidthLimit; // allowed bandwidth |
|
int m_ShareRatio; |
|
RouterStatus m_Status, m_StatusV6; |
|
RouterError m_Error, m_ErrorV6; |
|
bool m_Testing, m_TestingV6; |
|
int m_NetID; |
|
std::unique_ptr<NTCP2PrivateKeys> m_NTCP2Keys; |
|
std::unique_ptr<SSU2PrivateKeys> m_SSU2Keys; |
|
std::unique_ptr<i2p::crypto::X25519Keys> m_NTCP2StaticKeys, m_SSU2StaticKeys; |
|
// for ECIESx25519 |
|
i2p::crypto::NoiseSymmetricState m_InitialNoiseState, m_CurrentNoiseState; |
|
// publish |
|
std::unique_ptr<RouterService> m_Service; |
|
std::unique_ptr<boost::asio::deadline_timer> m_PublishTimer, m_CongestionUpdateTimer, m_CleanupTimer; |
|
std::unordered_set<i2p::data::IdentHash> m_PublishExcluded; |
|
uint32_t m_PublishReplyToken; |
|
bool m_IsHiddenMode; // not publish |
|
mutable std::mutex m_RouterInfoMutex; |
|
}; |
|
|
|
extern RouterContext context; |
|
} |
|
|
|
#endif
|
|
|