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377 lines
14 KiB
377 lines
14 KiB
/* |
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* Copyright (c) 2013-2024, 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_INFO_H__ |
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#define ROUTER_INFO_H__ |
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#include <inttypes.h> |
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#include <string> |
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#include <map> |
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#include <vector> |
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#include <array> |
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#include <iostream> |
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#include <boost/asio.hpp> |
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#include <boost/shared_ptr.hpp> |
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#include "Identity.h" |
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#include "Profiling.h" |
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#include "Family.h" |
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namespace i2p |
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{ |
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namespace data |
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{ |
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const char ROUTER_INFO_PROPERTY_LEASESETS[] = "netdb.knownLeaseSets"; |
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const char ROUTER_INFO_PROPERTY_ROUTERS[] = "netdb.knownRouters"; |
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const char ROUTER_INFO_PROPERTY_NETID[] = "netId"; |
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const char ROUTER_INFO_PROPERTY_VERSION[] = "router.version"; |
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const char ROUTER_INFO_PROPERTY_FAMILY[] = "family"; |
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const char ROUTER_INFO_PROPERTY_FAMILY_SIG[] = "family.sig"; |
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const char CAPS_FLAG_FLOODFILL = 'f'; |
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const char CAPS_FLAG_HIDDEN = 'H'; |
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const char CAPS_FLAG_REACHABLE = 'R'; |
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const char CAPS_FLAG_UNREACHABLE = 'U'; |
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/* bandwidth flags */ |
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const char CAPS_FLAG_LOW_BANDWIDTH1 = 'K'; /* < 12 KBps */ |
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const char CAPS_FLAG_LOW_BANDWIDTH2 = 'L'; /* 12-48 KBps */ |
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const char CAPS_FLAG_LOW_BANDWIDTH3 = 'M'; /* 48-64 KBps */ |
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const char CAPS_FLAG_HIGH_BANDWIDTH1 = 'N'; /* 64-128 KBps */ |
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const char CAPS_FLAG_HIGH_BANDWIDTH2 = 'O'; /* 128-256 KBps */ |
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const char CAPS_FLAG_EXTRA_BANDWIDTH1 = 'P'; /* 256-2048 KBps */ |
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const char CAPS_FLAG_EXTRA_BANDWIDTH2 = 'X'; /* > 2048 KBps */ |
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// bandwidth limits in kBps |
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const uint32_t LOW_BANDWIDTH_LIMIT = 48; |
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const uint32_t HIGH_BANDWIDTH_LIMIT = 256; |
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const uint32_t EXTRA_BANDWIDTH_LIMIT = 2048; |
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// congesion flags |
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const char CAPS_FLAG_MEDIUM_CONGESTION = 'D'; |
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const char CAPS_FLAG_HIGH_CONGESTION = 'E'; |
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const char CAPS_FLAG_REJECT_ALL_CONGESTION = 'G'; |
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const char CAPS_FLAG_V4 = '4'; |
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const char CAPS_FLAG_V6 = '6'; |
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const char CAPS_FLAG_SSU2_TESTING = 'B'; |
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const char CAPS_FLAG_SSU2_INTRODUCER = 'C'; |
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const uint8_t COST_NTCP2_PUBLISHED = 3; |
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const uint8_t COST_NTCP2_NON_PUBLISHED = 14; |
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const uint8_t COST_SSU2_DIRECT = 8; |
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const uint8_t COST_SSU2_NON_PUBLISHED = 15; |
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const size_t MAX_RI_BUFFER_SIZE = 3072; // if RouterInfo exceeds 3K we consider it as malformed, might extend later |
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const int HIGH_CONGESTION_INTERVAL = 15*60; // in seconds, 15 minutes |
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const int INTRODUCER_UPDATE_INTERVAL = 20*60*1000; // in milliseconds, 20 minutes |
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class RouterInfo: public RoutingDestination |
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{ |
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public: |
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enum SupportedTransportsIdx |
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{ |
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eNTCP2V4Idx = 0, |
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eNTCP2V6Idx, |
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eSSU2V4Idx, |
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eSSU2V6Idx, |
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eNTCP2V6MeshIdx, |
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eNumTransports |
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}; |
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#define TransportBit(tr) e##tr = (1 << e##tr##Idx) |
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enum SupportedTransports |
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{ |
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TransportBit(NTCP2V4), // 0x01 |
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TransportBit(NTCP2V6), // 0x02 |
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TransportBit(SSU2V4), // 0x04 |
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TransportBit(SSU2V6), // 0x08 |
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TransportBit(NTCP2V6Mesh), // 0x10 |
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eAllTransports = 0xFF |
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}; |
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typedef uint8_t CompatibleTransports; |
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enum Caps |
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{ |
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eFloodfill = 0x01, |
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eHighBandwidth = 0x02, |
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eExtraBandwidth = 0x04, |
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eReachable = 0x08, |
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eHidden = 0x10, |
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eUnreachable = 0x20 |
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}; |
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enum Congestion |
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{ |
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eLowCongestion = 0, |
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eMediumCongestion, |
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eHighCongestion, |
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eRejectAll |
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}; |
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enum AddressCaps |
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{ |
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eV4 = 0x01, |
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eV6 = 0x02, |
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eSSUTesting = 0x04, |
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eSSUIntroducer = 0x08 |
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}; |
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enum TransportStyle |
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{ |
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eTransportUnknown = 0, |
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eTransportNTCP2, |
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eTransportSSU2 |
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}; |
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struct Introducer |
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{ |
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Introducer (): iTag (0), iExp (0) { iH.Fill(0); }; |
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IdentHash iH; |
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uint32_t iTag; |
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uint32_t iExp; |
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}; |
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struct SSUExt |
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{ |
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int mtu; |
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std::vector<Introducer> introducers; |
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}; |
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struct Address |
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{ |
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TransportStyle transportStyle; |
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boost::asio::ip::address host; |
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Tag<32> s, i; // keys, i is first 16 bytes for NTCP2 and 32 bytes intro key for SSU |
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int port; |
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uint64_t date; |
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uint8_t caps; |
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bool published = false; |
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std::unique_ptr<SSUExt> ssu; // not null for SSU |
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bool IsCompatible (const boost::asio::ip::address& other) const |
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{ |
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return (IsV4 () && other.is_v4 ()) || |
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(IsV6 () && other.is_v6 ()); |
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} |
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bool operator==(const Address& other) const |
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{ |
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return transportStyle == other.transportStyle && |
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host == other.host && port == other.port; |
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} |
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bool operator!=(const Address& other) const |
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{ |
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return !(*this == other); |
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} |
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bool IsNTCP2 () const { return transportStyle == eTransportNTCP2; }; |
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bool IsSSU2 () const { return transportStyle == eTransportSSU2; }; |
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bool IsPublishedNTCP2 () const { return IsNTCP2 () && published; }; |
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bool IsReachableSSU () const { return (bool)ssu && (published || UsesIntroducer ()); }; |
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bool UsesIntroducer () const { return (bool)ssu && !ssu->introducers.empty (); }; |
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bool IsIntroducer () const { return caps & eSSUIntroducer; }; |
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bool IsPeerTesting () const { return caps & eSSUTesting; }; |
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bool IsV4 () const { return (caps & AddressCaps::eV4) || (host.is_v4 () && !host.is_unspecified ()); }; |
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bool IsV6 () const { return (caps & AddressCaps::eV6) || (host.is_v6 () && !host.is_unspecified ()); }; |
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}; |
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class Buffer: public std::array<uint8_t, MAX_RI_BUFFER_SIZE> |
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{ |
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public: |
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Buffer () = default; |
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Buffer (const uint8_t * buf, size_t len); |
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}; |
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typedef std::array<std::shared_ptr<Address>, eNumTransports> Addresses; |
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RouterInfo (const std::string& fullPath); |
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RouterInfo (const RouterInfo& ) = default; |
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RouterInfo& operator=(const RouterInfo& ) = default; |
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RouterInfo (std::shared_ptr<Buffer>&& buf, size_t len); |
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RouterInfo (const uint8_t * buf, size_t len); |
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virtual ~RouterInfo (); |
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std::shared_ptr<const IdentityEx> GetRouterIdentity () const { return m_RouterIdentity; }; |
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void SetRouterIdentity (std::shared_ptr<const IdentityEx> identity); |
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std::string GetIdentHashBase64 () const { return GetIdentHash ().ToBase64 (); }; |
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uint64_t GetTimestamp () const { return m_Timestamp; }; |
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int GetVersion () const { return m_Version; }; |
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virtual void SetProperty (const std::string& key, const std::string& value) {}; |
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virtual void ClearProperties () {}; |
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boost::shared_ptr<Addresses> GetAddresses () const; // should be called for local RI only, otherwise must return shared_ptr |
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std::shared_ptr<const Address> GetNTCP2V4Address () const; |
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std::shared_ptr<const Address> GetNTCP2V6Address () const; |
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std::shared_ptr<const Address> GetPublishedNTCP2V4Address () const; |
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std::shared_ptr<const Address> GetPublishedNTCP2V6Address () const; |
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std::shared_ptr<const Address> GetYggdrasilAddress () const; |
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std::shared_ptr<const Address> GetSSU2V4Address () const; |
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std::shared_ptr<const Address> GetSSU2V6Address () const; |
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std::shared_ptr<const Address> GetSSU2Address (bool v4) const; |
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void AddNTCP2Address (const uint8_t * staticKey, const uint8_t * iv,int port, uint8_t caps); // non published |
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void AddNTCP2Address (const uint8_t * staticKey, const uint8_t * iv, |
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const boost::asio::ip::address& host, int port); // published |
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void RemoveNTCP2Address (bool v4); |
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void AddSSU2Address (const uint8_t * staticKey, const uint8_t * introKey, int port, uint8_t caps); // non published |
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void AddSSU2Address (const uint8_t * staticKey, const uint8_t * introKey, |
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const boost::asio::ip::address& host, int port); // published |
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void RemoveSSU2Address (bool v4); |
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void SetUnreachableAddressesTransportCaps (uint8_t transports); // bitmask of AddressCaps |
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void UpdateSupportedTransports (); |
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void UpdateIntroducers (uint64_t ts); // ts in seconds |
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bool IsFloodfill () const { return m_IsFloodfill; }; |
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void SetFloodfill () { m_IsFloodfill = true; }; |
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void ResetFloodfill () { m_IsFloodfill = false; }; |
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bool IsECIES () const { return m_RouterIdentity->GetCryptoKeyType () == i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD; }; |
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bool IsNTCP2 (bool v4only = true) const; |
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bool IsNTCP2V6 () const { return m_SupportedTransports & eNTCP2V6; }; |
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bool IsSSU2V4 () const { return m_SupportedTransports & eSSU2V4; }; |
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bool IsSSU2V6 () const { return m_SupportedTransports & eSSU2V6; }; |
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bool IsV6 () const { return m_SupportedTransports & (eNTCP2V6 | eSSU2V6); }; |
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bool IsV4 () const { return m_SupportedTransports & (eNTCP2V4 | eSSU2V4); }; |
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bool IsMesh () const { return m_SupportedTransports & eNTCP2V6Mesh; }; |
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void EnableV6 (); |
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void DisableV6 (); |
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void EnableV4 (); |
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void DisableV4 (); |
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void EnableMesh (); |
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void DisableMesh (); |
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bool IsCompatible (const RouterInfo& other) const { return m_SupportedTransports & other.m_SupportedTransports; }; |
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bool IsReachableFrom (const RouterInfo& other) const { return m_ReachableTransports & other.m_SupportedTransports; }; |
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bool IsReachableBy (CompatibleTransports transports) const { return m_ReachableTransports & transports; }; |
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CompatibleTransports GetCompatibleTransports (bool incoming) const { return incoming ? m_ReachableTransports : m_SupportedTransports; }; |
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CompatibleTransports GetPublishedTransports () const { return m_PublishedTransports; }; |
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bool HasValidAddresses () const { return m_SupportedTransports; }; |
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bool IsHidden () const { return m_Caps & eHidden; }; |
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bool IsHighBandwidth () const { return m_Caps & RouterInfo::eHighBandwidth; }; |
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bool IsExtraBandwidth () const { return m_Caps & RouterInfo::eExtraBandwidth; }; |
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bool IsEligibleFloodfill () const; |
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bool IsDeclaredFloodfill () const { return m_Caps & RouterInfo::eFloodfill; }; |
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bool IsPublished (bool v4) const; |
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bool IsNAT2NATOnly (const RouterInfo& other) const; // only NAT-to-NAT connection is possible |
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bool IsSSU2PeerTesting (bool v4) const; |
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bool IsSSU2Introducer (bool v4) const; |
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bool IsHighCongestion (bool highBandwidth) const; |
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uint8_t GetCaps () const { return m_Caps; }; |
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void SetCaps (uint8_t caps) { m_Caps = caps; }; |
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Congestion GetCongestion () const { return m_Congestion; }; |
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void SetUnreachable (bool unreachable) { m_IsUnreachable = unreachable; }; |
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bool IsUnreachable () const { return m_IsUnreachable; }; |
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void ExcludeReachableTransports (CompatibleTransports transports) { m_ReachableTransports &= ~transports; }; |
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const uint8_t * GetBuffer () const { return m_Buffer ? m_Buffer->data () : nullptr; }; |
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const uint8_t * LoadBuffer (const std::string& fullPath); // load if necessary |
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size_t GetBufferLen () const { return m_BufferLen; }; |
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bool IsUpdated () const { return m_IsUpdated; }; |
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void SetUpdated (bool updated) { m_IsUpdated = updated; }; |
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bool SaveToFile (const std::string& fullPath); |
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std::shared_ptr<RouterProfile> GetProfile () const; |
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void DropProfile () { m_Profile = nullptr; }; |
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bool HasProfile () const { return (bool)m_Profile; }; |
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bool Update (const uint8_t * buf, size_t len); |
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void DeleteBuffer () { m_Buffer = nullptr; }; |
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bool IsNewer (const uint8_t * buf, size_t len) const; |
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/** return true if we are in a router family and the signature is valid */ |
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bool IsFamily (FamilyID famid) const; |
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// implements RoutingDestination |
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std::shared_ptr<const IdentityEx> GetIdentity () const { return m_RouterIdentity; }; |
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void Encrypt (const uint8_t * data, uint8_t * encrypted) const; |
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bool IsDestination () const { return false; }; |
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protected: |
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RouterInfo (); |
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uint8_t * GetBufferPointer (size_t offset = 0 ) { return m_Buffer->data () + offset; }; |
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void UpdateBuffer (const uint8_t * buf, size_t len); |
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void SetBufferLen (size_t len) { m_BufferLen = len; }; |
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void RefreshTimestamp (); |
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CompatibleTransports GetReachableTransports () const { return m_ReachableTransports; }; |
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void SetReachableTransports (CompatibleTransports transports) { m_ReachableTransports = transports; }; |
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void SetCongestion (Congestion c) { m_Congestion = c; }; |
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private: |
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bool LoadFile (const std::string& fullPath); |
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void ReadFromFile (const std::string& fullPath); |
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void ReadFromStream (std::istream& s); |
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void ReadFromBuffer (bool verifySignature); |
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size_t ReadString (char* str, size_t len, std::istream& s) const; |
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void ExtractCaps (const char * value); |
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uint8_t ExtractAddressCaps (const char * value) const; |
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void UpdateIntroducers (std::shared_ptr<Address> address, uint64_t ts); |
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template<typename Filter> |
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std::shared_ptr<const Address> GetAddress (Filter filter) const; |
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virtual std::shared_ptr<Buffer> NewBuffer () const; |
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virtual std::shared_ptr<Address> NewAddress () const; |
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virtual boost::shared_ptr<Addresses> NewAddresses () const; |
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virtual std::shared_ptr<IdentityEx> NewIdentity (const uint8_t * buf, size_t len) const; |
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private: |
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FamilyID m_FamilyID; |
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std::shared_ptr<const IdentityEx> m_RouterIdentity; |
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std::shared_ptr<Buffer> m_Buffer; |
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size_t m_BufferLen; |
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uint64_t m_Timestamp; // in milliseconds |
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boost::shared_ptr<Addresses> m_Addresses; // TODO: use std::shared_ptr and std::atomic_store for gcc >= 4.9 |
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bool m_IsUpdated, m_IsUnreachable, m_IsFloodfill; |
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CompatibleTransports m_SupportedTransports, m_ReachableTransports, m_PublishedTransports; |
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uint8_t m_Caps; |
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int m_Version; |
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Congestion m_Congestion; |
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mutable std::shared_ptr<RouterProfile> m_Profile; |
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}; |
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class LocalRouterInfo: public RouterInfo |
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{ |
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public: |
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LocalRouterInfo () = default; |
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void CreateBuffer (const PrivateKeys& privateKeys); |
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void UpdateCaps (uint8_t caps); |
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bool UpdateCongestion (Congestion c); // returns true if updated |
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void SetProperty (const std::string& key, const std::string& value) override; |
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void DeleteProperty (const std::string& key); |
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std::string GetProperty (const std::string& key) const; |
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void ClearProperties () override { m_Properties.clear (); }; |
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void UpdateFloodfillProperty (bool floodfill); |
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bool AddSSU2Introducer (const Introducer& introducer, bool v4); |
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bool RemoveSSU2Introducer (const IdentHash& h, bool v4); |
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private: |
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void WriteToStream (std::ostream& s) const; |
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void UpdateCapsProperty (); |
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void WriteString (const std::string& str, std::ostream& s) const; |
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std::shared_ptr<Buffer> NewBuffer () const override; |
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std::shared_ptr<Address> NewAddress () const override; |
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boost::shared_ptr<Addresses> NewAddresses () const override; |
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std::shared_ptr<IdentityEx> NewIdentity (const uint8_t * buf, size_t len) const override; |
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private: |
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std::map<std::string, std::string> m_Properties; |
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}; |
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} |
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} |
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#endif
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