mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-11-04 06:00:37 +00:00
340 lines
13 KiB
C++
340 lines
13 KiB
C++
/*
|
|
* Copyright (c) 2013-2022, 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_INFO_H__
|
|
#define ROUTER_INFO_H__
|
|
|
|
#include <inttypes.h>
|
|
#include <string>
|
|
#include <map>
|
|
#include <vector>
|
|
#include <array>
|
|
#include <iostream>
|
|
#include <boost/asio.hpp>
|
|
#include <boost/shared_ptr.hpp>
|
|
#include "Identity.h"
|
|
#include "Profiling.h"
|
|
#include "Family.h"
|
|
|
|
namespace i2p
|
|
{
|
|
namespace data
|
|
{
|
|
const char ROUTER_INFO_PROPERTY_LEASESETS[] = "netdb.knownLeaseSets";
|
|
const char ROUTER_INFO_PROPERTY_ROUTERS[] = "netdb.knownRouters";
|
|
const char ROUTER_INFO_PROPERTY_NETID[] = "netId";
|
|
const char ROUTER_INFO_PROPERTY_VERSION[] = "router.version";
|
|
const char ROUTER_INFO_PROPERTY_FAMILY[] = "family";
|
|
const char ROUTER_INFO_PROPERTY_FAMILY_SIG[] = "family.sig";
|
|
|
|
const char CAPS_FLAG_FLOODFILL = 'f';
|
|
const char CAPS_FLAG_HIDDEN = 'H';
|
|
const char CAPS_FLAG_REACHABLE = 'R';
|
|
const char CAPS_FLAG_UNREACHABLE = 'U';
|
|
/* bandwidth flags */
|
|
const char CAPS_FLAG_LOW_BANDWIDTH1 = 'K'; /* < 12 KBps */
|
|
const char CAPS_FLAG_LOW_BANDWIDTH2 = 'L'; /* 12-48 KBps */
|
|
const char CAPS_FLAG_HIGH_BANDWIDTH1 = 'M'; /* 48-64 KBps */
|
|
const char CAPS_FLAG_HIGH_BANDWIDTH2 = 'N'; /* 64-128 KBps */
|
|
const char CAPS_FLAG_HIGH_BANDWIDTH3 = 'O'; /* 128-256 KBps */
|
|
const char CAPS_FLAG_EXTRA_BANDWIDTH1 = 'P'; /* 256-2000 KBps */
|
|
const char CAPS_FLAG_EXTRA_BANDWIDTH2 = 'X'; /* > 2000 KBps */
|
|
|
|
const char CAPS_FLAG_V4 = '4';
|
|
const char CAPS_FLAG_V6 = '6';
|
|
const char CAPS_FLAG_SSU_TESTING = 'B';
|
|
const char CAPS_FLAG_SSU_INTRODUCER = 'C';
|
|
|
|
const uint8_t COST_NTCP2_PUBLISHED = 3;
|
|
const uint8_t COST_NTCP2_NON_PUBLISHED = 14;
|
|
const uint8_t COST_SSU2_DIRECT = 8;
|
|
const uint8_t COST_SSU_DIRECT = 9;
|
|
const uint8_t COST_SSU_THROUGH_INTRODUCERS = 11;
|
|
const uint8_t COST_SSU2_NON_PUBLISHED = 15;
|
|
|
|
const size_t MAX_RI_BUFFER_SIZE = 3072; // if RouterInfo exceeds 3K we consider it as malformed, might extend later
|
|
class RouterInfo: public RoutingDestination
|
|
{
|
|
public:
|
|
|
|
enum SupportedTransports
|
|
{
|
|
eNTCP2V4 = 0x01,
|
|
eNTCP2V6 = 0x02,
|
|
eSSUV4 = 0x04,
|
|
eSSUV6 = 0x08,
|
|
eNTCP2V6Mesh = 0x10,
|
|
eSSU2V4 = 0x20,
|
|
eSSU2V6 = 0x40,
|
|
eAllTransports = 0xFF
|
|
};
|
|
typedef uint8_t CompatibleTransports;
|
|
|
|
enum Caps
|
|
{
|
|
eFloodfill = 0x01,
|
|
eHighBandwidth = 0x02,
|
|
eExtraBandwidth = 0x04,
|
|
eReachable = 0x08,
|
|
eHidden = 0x10,
|
|
eUnreachable = 0x20
|
|
};
|
|
|
|
enum AddressCaps
|
|
{
|
|
eV4 = 0x01,
|
|
eV6 = 0x02,
|
|
eSSUTesting = 0x04,
|
|
eSSUIntroducer = 0x08
|
|
};
|
|
|
|
enum TransportStyle
|
|
{
|
|
eTransportUnknown = 0,
|
|
eTransportNTCP,
|
|
eTransportSSU,
|
|
eTransportSSU2
|
|
};
|
|
|
|
typedef Tag<32> IntroKey; // should be castable to MacKey and AESKey
|
|
struct Introducer
|
|
{
|
|
Introducer (): iPort (0), iExp (0) {};
|
|
boost::asio::ip::address iHost;
|
|
int iPort;
|
|
IntroKey iKey; // or ih for SSU2
|
|
uint32_t iTag;
|
|
uint32_t iExp;
|
|
};
|
|
|
|
struct SSUExt
|
|
{
|
|
int mtu;
|
|
std::vector<Introducer> introducers;
|
|
};
|
|
|
|
struct Address
|
|
{
|
|
TransportStyle transportStyle;
|
|
boost::asio::ip::address host;
|
|
Tag<32> s, i; // keys, i is first 16 bytes for NTCP2 and 32 bytes intro key for SSU
|
|
int port;
|
|
uint64_t date;
|
|
uint8_t caps;
|
|
bool published = false;
|
|
std::unique_ptr<SSUExt> ssu; // not null for SSU
|
|
|
|
bool IsCompatible (const boost::asio::ip::address& other) const
|
|
{
|
|
return (IsV4 () && other.is_v4 ()) ||
|
|
(IsV6 () && other.is_v6 ());
|
|
}
|
|
|
|
bool operator==(const Address& other) const
|
|
{
|
|
return transportStyle == other.transportStyle &&
|
|
host == other.host && port == other.port;
|
|
}
|
|
|
|
bool operator!=(const Address& other) const
|
|
{
|
|
return !(*this == other);
|
|
}
|
|
|
|
bool IsNTCP2 () const { return transportStyle == eTransportNTCP; };
|
|
bool IsSSU2 () const { return transportStyle == eTransportSSU2; };
|
|
bool IsPublishedNTCP2 () const { return IsNTCP2 () && published; };
|
|
bool IsReachableSSU () const { return (bool)ssu && (published || UsesIntroducer ()); };
|
|
bool UsesIntroducer () const { return (bool)ssu && !ssu->introducers.empty (); };
|
|
|
|
bool IsIntroducer () const { return caps & eSSUIntroducer; };
|
|
bool IsPeerTesting () const { return caps & eSSUTesting; };
|
|
|
|
bool IsV4 () const { return (caps & AddressCaps::eV4) || (host.is_v4 () && !host.is_unspecified ()); };
|
|
bool IsV6 () const { return (caps & AddressCaps::eV6) || (host.is_v6 () && !host.is_unspecified ()); };
|
|
};
|
|
|
|
class Buffer: public std::array<uint8_t, MAX_RI_BUFFER_SIZE>
|
|
{
|
|
public:
|
|
|
|
Buffer () = default;
|
|
Buffer (const uint8_t * buf, size_t len);
|
|
};
|
|
|
|
typedef std::vector<std::shared_ptr<Address> > Addresses;
|
|
|
|
RouterInfo (const std::string& fullPath);
|
|
RouterInfo (const RouterInfo& ) = default;
|
|
RouterInfo& operator=(const RouterInfo& ) = default;
|
|
RouterInfo (std::shared_ptr<Buffer>&& buf, size_t len);
|
|
RouterInfo (const uint8_t * buf, size_t len);
|
|
virtual ~RouterInfo ();
|
|
|
|
std::shared_ptr<const IdentityEx> GetRouterIdentity () const { return m_RouterIdentity; };
|
|
void SetRouterIdentity (std::shared_ptr<const IdentityEx> identity);
|
|
std::string GetIdentHashBase64 () const { return GetIdentHash ().ToBase64 (); };
|
|
uint64_t GetTimestamp () const { return m_Timestamp; };
|
|
int GetVersion () const { return m_Version; };
|
|
virtual void SetProperty (const std::string& key, const std::string& value) {};
|
|
virtual void ClearProperties () {};
|
|
Addresses& GetAddresses () { return *m_Addresses; }; // should be called for local RI only, otherwise must return shared_ptr
|
|
std::shared_ptr<const Address> GetNTCP2AddressWithStaticKey (const uint8_t * key) const;
|
|
std::shared_ptr<const Address> GetSSU2AddressWithStaticKey (const uint8_t * key, bool isV6) const;
|
|
std::shared_ptr<const Address> GetPublishedNTCP2V4Address () const;
|
|
std::shared_ptr<const Address> GetPublishedNTCP2V6Address () const;
|
|
std::shared_ptr<const Address> GetSSUAddress (bool v4only = true) const;
|
|
std::shared_ptr<const Address> GetSSUV6Address () const;
|
|
std::shared_ptr<const Address> GetYggdrasilAddress () const;
|
|
std::shared_ptr<const Address> GetSSU2V4Address () const;
|
|
std::shared_ptr<const Address> GetSSU2V6Address () const;
|
|
std::shared_ptr<const Address> GetSSU2Address (bool v4) const;
|
|
|
|
void AddSSUAddress (const char * host, int port, const uint8_t * key, int mtu = 0);
|
|
void AddNTCP2Address (const uint8_t * staticKey, const uint8_t * iv,
|
|
const boost::asio::ip::address& host = boost::asio::ip::address(), int port = 0, uint8_t caps = 0);
|
|
void AddSSU2Address (const uint8_t * staticKey, const uint8_t * introKey, uint8_t caps = 0); // non published
|
|
void AddSSU2Address (const uint8_t * staticKey, const uint8_t * introKey,
|
|
const boost::asio::ip::address& host, int port); // published
|
|
bool AddIntroducer (const Introducer& introducer);
|
|
bool RemoveIntroducer (const boost::asio::ip::udp::endpoint& e);
|
|
void SetUnreachableAddressesTransportCaps (uint8_t transports); // bitmask of AddressCaps
|
|
void UpdateSupportedTransports ();
|
|
bool IsFloodfill () const { return m_Caps & Caps::eFloodfill; };
|
|
bool IsReachable () const { return m_Caps & Caps::eReachable; };
|
|
bool IsECIES () const { return m_RouterIdentity->GetCryptoKeyType () == i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD; };
|
|
bool IsSSU (bool v4only = true) const;
|
|
bool IsSSUV6 () const { return m_SupportedTransports & eSSUV6; };
|
|
bool IsNTCP2 (bool v4only = true) const;
|
|
bool IsNTCP2V6 () const { return m_SupportedTransports & eNTCP2V6; };
|
|
bool IsSSU2V4 () const { return m_SupportedTransports & eSSU2V4; };
|
|
bool IsSSU2V6 () const { return m_SupportedTransports & eSSU2V6; };
|
|
bool IsV6 () const { return m_SupportedTransports & (eSSUV6 | eNTCP2V6 | eSSU2V6); };
|
|
bool IsV4 () const { return m_SupportedTransports & (eSSUV4 | eNTCP2V4 | eSSU2V4); };
|
|
bool IsMesh () const { return m_SupportedTransports & eNTCP2V6Mesh; };
|
|
void EnableV6 ();
|
|
void DisableV6 ();
|
|
void EnableV4 ();
|
|
void DisableV4 ();
|
|
void EnableMesh ();
|
|
void DisableMesh ();
|
|
bool IsCompatible (const RouterInfo& other) const { return m_SupportedTransports & other.m_SupportedTransports; };
|
|
bool IsReachableFrom (const RouterInfo& other) const { return m_ReachableTransports & other.m_SupportedTransports; };
|
|
bool IsReachableBy (CompatibleTransports transports) const { return m_ReachableTransports & transports; };
|
|
CompatibleTransports GetCompatibleTransports (bool incoming) const { return incoming ? m_ReachableTransports : m_SupportedTransports; };
|
|
bool HasValidAddresses () const { return m_SupportedTransports; };
|
|
bool IsHidden () const { return m_Caps & eHidden; };
|
|
bool IsHighBandwidth () const { return m_Caps & RouterInfo::eHighBandwidth; };
|
|
bool IsExtraBandwidth () const { return m_Caps & RouterInfo::eExtraBandwidth; };
|
|
bool IsEligibleFloodfill () const;
|
|
bool IsPeerTesting (bool v4) const;
|
|
bool IsSSU2PeerTesting (bool v4) const;
|
|
bool IsIntroducer (bool v4) const;
|
|
bool IsSSU2Introducer (bool v4) const;
|
|
|
|
uint8_t GetCaps () const { return m_Caps; };
|
|
void SetCaps (uint8_t caps) { m_Caps = caps; };
|
|
|
|
void SetUnreachable (bool unreachable) { m_IsUnreachable = unreachable; };
|
|
bool IsUnreachable () const { return m_IsUnreachable; };
|
|
|
|
const uint8_t * GetBuffer () const { return m_Buffer->data (); };
|
|
const uint8_t * LoadBuffer (const std::string& fullPath); // load if necessary
|
|
size_t GetBufferLen () const { return m_BufferLen; };
|
|
|
|
bool IsUpdated () const { return m_IsUpdated; };
|
|
void SetUpdated (bool updated) { m_IsUpdated = updated; };
|
|
bool SaveToFile (const std::string& fullPath);
|
|
|
|
std::shared_ptr<RouterProfile> GetProfile () const;
|
|
void SaveProfile () { if (m_Profile) m_Profile->Save (GetIdentHash ()); };
|
|
|
|
void Update (const uint8_t * buf, size_t len);
|
|
void DeleteBuffer () { m_Buffer = nullptr; };
|
|
bool IsNewer (const uint8_t * buf, size_t len) const;
|
|
|
|
/** return true if we are in a router family and the signature is valid */
|
|
bool IsFamily (FamilyID famid) const;
|
|
|
|
// implements RoutingDestination
|
|
std::shared_ptr<const IdentityEx> GetIdentity () const { return m_RouterIdentity; };
|
|
void Encrypt (const uint8_t * data, uint8_t * encrypted) const;
|
|
|
|
bool IsDestination () const { return false; };
|
|
|
|
protected:
|
|
|
|
RouterInfo ();
|
|
uint8_t * GetBufferPointer (size_t offset = 0 ) { return m_Buffer->data () + offset; };
|
|
void UpdateBuffer (const uint8_t * buf, size_t len);
|
|
void SetBufferLen (size_t len) { m_BufferLen = len; };
|
|
void RefreshTimestamp ();
|
|
const Addresses& GetAddresses () const { return *m_Addresses; };
|
|
CompatibleTransports GetReachableTransports () const { return m_ReachableTransports; };
|
|
void SetReachableTransports (CompatibleTransports transports) { m_ReachableTransports = transports; };
|
|
|
|
private:
|
|
|
|
bool LoadFile (const std::string& fullPath);
|
|
void ReadFromFile (const std::string& fullPath);
|
|
void ReadFromStream (std::istream& s);
|
|
void ReadFromBuffer (bool verifySignature);
|
|
size_t ReadString (char* str, size_t len, std::istream& s) const;
|
|
void ExtractCaps (const char * value);
|
|
uint8_t ExtractAddressCaps (const char * value) const;
|
|
template<typename Filter>
|
|
std::shared_ptr<const Address> GetAddress (Filter filter) const;
|
|
virtual std::shared_ptr<Buffer> NewBuffer () const;
|
|
|
|
private:
|
|
|
|
FamilyID m_FamilyID;
|
|
std::shared_ptr<const IdentityEx> m_RouterIdentity;
|
|
std::shared_ptr<Buffer> m_Buffer;
|
|
size_t m_BufferLen;
|
|
uint64_t m_Timestamp;
|
|
boost::shared_ptr<Addresses> m_Addresses; // TODO: use std::shared_ptr and std::atomic_store for gcc >= 4.9
|
|
bool m_IsUpdated, m_IsUnreachable;
|
|
CompatibleTransports m_SupportedTransports, m_ReachableTransports;
|
|
uint8_t m_Caps;
|
|
int m_Version;
|
|
mutable std::shared_ptr<RouterProfile> m_Profile;
|
|
};
|
|
|
|
class LocalRouterInfo: public RouterInfo
|
|
{
|
|
public:
|
|
|
|
LocalRouterInfo () = default;
|
|
void CreateBuffer (const PrivateKeys& privateKeys);
|
|
void UpdateCaps (uint8_t caps);
|
|
|
|
void SetProperty (const std::string& key, const std::string& value) override;
|
|
void DeleteProperty (const std::string& key);
|
|
std::string GetProperty (const std::string& key) const;
|
|
void ClearProperties () override { m_Properties.clear (); };
|
|
|
|
bool AddSSU2Introducer (const Introducer& introducer, bool v4);
|
|
bool RemoveSSU2Introducer (const IdentHash& h, bool v4);
|
|
|
|
private:
|
|
|
|
void WriteToStream (std::ostream& s) const;
|
|
void UpdateCapsProperty ();
|
|
void WriteString (const std::string& str, std::ostream& s) const;
|
|
std::shared_ptr<Buffer> NewBuffer () const override;
|
|
|
|
private:
|
|
|
|
std::map<std::string, std::string> m_Properties;
|
|
};
|
|
}
|
|
}
|
|
|
|
#endif
|