mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-11-17 21:26:04 +00:00
192 lines
8.2 KiB
C++
192 lines
8.2 KiB
C++
/*
|
|
* Copyright (c) 2013-2023, 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 NETDB_H__
|
|
#define NETDB_H__
|
|
// this file is called NetDb.hpp to resolve conflict with libc's netdb.h on case insensitive fs
|
|
#include <inttypes.h>
|
|
#include <set>
|
|
#include <unordered_map>
|
|
#include <string>
|
|
#include <thread>
|
|
#include <mutex>
|
|
|
|
#include "Base.h"
|
|
#include "Gzip.h"
|
|
#include "FS.h"
|
|
#include "Queue.h"
|
|
#include "I2NPProtocol.h"
|
|
#include "RouterInfo.h"
|
|
#include "LeaseSet.h"
|
|
#include "Tunnel.h"
|
|
#include "TunnelPool.h"
|
|
#include "Reseed.h"
|
|
#include "NetDbRequests.h"
|
|
#include "Family.h"
|
|
#include "version.h"
|
|
#include "util.h"
|
|
#include "KadDHT.h"
|
|
|
|
namespace i2p
|
|
{
|
|
namespace data
|
|
{
|
|
const int NETDB_MIN_ROUTERS = 90;
|
|
const int NETDB_MIN_FLOODFILLS = 5;
|
|
const int NETDB_MIN_TUNNEL_CREATION_SUCCESS_RATE = 8; // in percents
|
|
const int NETDB_FLOODFILL_EXPIRATION_TIMEOUT = 60 * 60; // 1 hour, in seconds
|
|
const int NETDB_INTRODUCEE_EXPIRATION_TIMEOUT = 65 * 60;
|
|
const int NETDB_MIN_EXPIRATION_TIMEOUT = 90 * 60; // 1.5 hours
|
|
const int NETDB_MAX_EXPIRATION_TIMEOUT = 27 * 60 * 60; // 27 hours
|
|
const int NETDB_MAX_OFFLINE_EXPIRATION_TIMEOUT = 180; // in days
|
|
const int NETDB_EXPIRATION_TIMEOUT_THRESHOLD = 2*60; // 2 minutes
|
|
const int NETDB_MIN_HIGHBANDWIDTH_VERSION = MAKE_VERSION_NUMBER(0, 9, 51); // 0.9.51
|
|
const int NETDB_MIN_FLOODFILL_VERSION = MAKE_VERSION_NUMBER(0, 9, 51); // 0.9.51
|
|
const int NETDB_MIN_SHORT_TUNNEL_BUILD_VERSION = MAKE_VERSION_NUMBER(0, 9, 51); // 0.9.51
|
|
|
|
/** function for visiting a leaseset stored in a floodfill */
|
|
typedef std::function<void(const IdentHash, std::shared_ptr<LeaseSet>)> LeaseSetVisitor;
|
|
|
|
/** function for visiting a router info we have locally */
|
|
typedef std::function<void(std::shared_ptr<const i2p::data::RouterInfo>)> RouterInfoVisitor;
|
|
|
|
/** function for visiting a router info and determining if we want to use it */
|
|
typedef std::function<bool(std::shared_ptr<const i2p::data::RouterInfo>)> RouterInfoFilter;
|
|
|
|
class NetDb
|
|
{
|
|
public:
|
|
|
|
NetDb ();
|
|
~NetDb ();
|
|
|
|
void Start ();
|
|
void Stop ();
|
|
|
|
std::shared_ptr<const RouterInfo> AddRouterInfo (const uint8_t * buf, int len);
|
|
bool AddRouterInfo (const IdentHash& ident, const uint8_t * buf, int len);
|
|
bool AddLeaseSet (const IdentHash& ident, const uint8_t * buf, int len);
|
|
bool AddLeaseSet2 (const IdentHash& ident, const uint8_t * buf, int len, uint8_t storeType);
|
|
std::shared_ptr<RouterInfo> FindRouter (const IdentHash& ident) const;
|
|
std::shared_ptr<LeaseSet> FindLeaseSet (const IdentHash& destination) const;
|
|
std::shared_ptr<RouterProfile> FindRouterProfile (const IdentHash& ident) const;
|
|
|
|
void RequestDestination (const IdentHash& destination, RequestedDestination::RequestComplete requestComplete = nullptr, bool direct = true);
|
|
void RequestDestinationFrom (const IdentHash& destination, const IdentHash & from, bool exploritory, RequestedDestination::RequestComplete requestComplete = nullptr);
|
|
|
|
void HandleDatabaseStoreMsg (std::shared_ptr<const I2NPMessage> msg);
|
|
void HandleDatabaseSearchReplyMsg (std::shared_ptr<const I2NPMessage> msg);
|
|
void HandleDatabaseLookupMsg (std::shared_ptr<const I2NPMessage> msg);
|
|
void HandleNTCP2RouterInfoMsg (std::shared_ptr<const I2NPMessage> m);
|
|
|
|
std::shared_ptr<const RouterInfo> GetRandomRouter () const;
|
|
std::shared_ptr<const RouterInfo> GetRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith, bool reverse) const;
|
|
std::shared_ptr<const RouterInfo> GetHighBandwidthRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith, bool reverse) const;
|
|
std::shared_ptr<const RouterInfo> GetRandomSSU2PeerTestRouter (bool v4, const std::set<IdentHash>& excluded) const;
|
|
std::shared_ptr<const RouterInfo> GetRandomSSU2Introducer (bool v4, const std::set<IdentHash>& excluded) const;
|
|
std::shared_ptr<const RouterInfo> GetClosestFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded) const;
|
|
std::vector<IdentHash> GetClosestFloodfills (const IdentHash& destination, size_t num,
|
|
std::set<IdentHash>& excluded, bool closeThanUsOnly = false) const;
|
|
std::shared_ptr<const RouterInfo> GetClosestNonFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded) const;
|
|
std::shared_ptr<const RouterInfo> GetRandomRouterInFamily (FamilyID fam) const;
|
|
void SetUnreachable (const IdentHash& ident, bool unreachable);
|
|
|
|
void PostI2NPMsg (std::shared_ptr<const I2NPMessage> msg);
|
|
|
|
void Reseed ();
|
|
Families& GetFamilies () { return m_Families; };
|
|
|
|
// for web interface
|
|
int GetNumRouters () const { return m_RouterInfos.size (); };
|
|
int GetNumFloodfills () const { return m_Floodfills.GetSize (); };
|
|
int GetNumLeaseSets () const { return m_LeaseSets.size (); };
|
|
|
|
/** visit all lease sets we currently store */
|
|
void VisitLeaseSets(LeaseSetVisitor v);
|
|
/** visit all router infos we have currently on disk, usually insanely expensive, does not access in memory RI */
|
|
void VisitStoredRouterInfos(RouterInfoVisitor v);
|
|
/** visit all router infos we have loaded in memory, cheaper than VisitLocalRouterInfos but locks access while visiting */
|
|
void VisitRouterInfos(RouterInfoVisitor v);
|
|
/** visit N random router that match using filter, then visit them with a visitor, return number of RouterInfos that were visited */
|
|
size_t VisitRandomRouterInfos(RouterInfoFilter f, RouterInfoVisitor v, size_t n);
|
|
|
|
void ClearRouterInfos () { m_RouterInfos.clear (); };
|
|
std::shared_ptr<RouterInfo::Buffer> NewRouterInfoBuffer () { return m_RouterInfoBuffersPool.AcquireSharedMt (); };
|
|
bool PopulateRouterInfoBuffer (std::shared_ptr<RouterInfo> r);
|
|
std::shared_ptr<RouterInfo::Address> NewRouterInfoAddress () { return m_RouterInfoAddressesPool.AcquireSharedMt (); };
|
|
boost::shared_ptr<RouterInfo::Addresses> NewRouterInfoAddresses ()
|
|
{
|
|
return boost::shared_ptr<RouterInfo::Addresses>(m_RouterInfoAddressVectorsPool.AcquireMt (),
|
|
std::bind <void (i2p::util::MemoryPoolMt<RouterInfo::Addresses>::*)(RouterInfo::Addresses *)>
|
|
(&i2p::util::MemoryPoolMt<RouterInfo::Addresses>::ReleaseMt,
|
|
&m_RouterInfoAddressVectorsPool, std::placeholders::_1));
|
|
};
|
|
std::shared_ptr<Lease> NewLease (const Lease& lease) { return m_LeasesPool.AcquireSharedMt (lease); };
|
|
|
|
uint32_t GetPublishReplyToken () const { return m_PublishReplyToken; };
|
|
|
|
private:
|
|
|
|
void Load ();
|
|
bool LoadRouterInfo (const std::string& path, uint64_t ts);
|
|
void SaveUpdated ();
|
|
void Run (); // exploratory thread
|
|
void Explore (int numDestinations);
|
|
void Flood (const IdentHash& ident, std::shared_ptr<I2NPMessage> floodMsg);
|
|
void ManageLeaseSets ();
|
|
void ManageRequests ();
|
|
|
|
void ReseedFromFloodfill(const RouterInfo & ri, int numRouters = 40, int numFloodfills = 20);
|
|
|
|
std::shared_ptr<const RouterInfo> AddRouterInfo (const uint8_t * buf, int len, bool& updated);
|
|
std::shared_ptr<const RouterInfo> AddRouterInfo (const IdentHash& ident, const uint8_t * buf, int len, bool& updated);
|
|
|
|
template<typename Filter>
|
|
std::shared_ptr<const RouterInfo> GetRandomRouter (Filter filter) const;
|
|
|
|
private:
|
|
|
|
mutable std::mutex m_LeaseSetsMutex;
|
|
std::unordered_map<IdentHash, std::shared_ptr<LeaseSet> > m_LeaseSets;
|
|
mutable std::mutex m_RouterInfosMutex;
|
|
std::unordered_map<IdentHash, std::shared_ptr<RouterInfo> > m_RouterInfos;
|
|
mutable std::mutex m_FloodfillsMutex;
|
|
DHTTable m_Floodfills;
|
|
|
|
bool m_IsRunning;
|
|
std::thread * m_Thread;
|
|
i2p::util::Queue<std::shared_ptr<const I2NPMessage> > m_Queue; // of I2NPDatabaseStoreMsg
|
|
|
|
GzipInflator m_Inflator;
|
|
Reseeder * m_Reseeder;
|
|
Families m_Families;
|
|
i2p::fs::HashedStorage m_Storage;
|
|
|
|
friend class NetDbRequests;
|
|
NetDbRequests m_Requests;
|
|
|
|
bool m_PersistProfiles;
|
|
|
|
/** router info we are bootstrapping from or nullptr if we are not currently doing that*/
|
|
std::shared_ptr<RouterInfo> m_FloodfillBootstrap;
|
|
|
|
std::set<IdentHash> m_PublishExcluded;
|
|
uint32_t m_PublishReplyToken = 0;
|
|
|
|
i2p::util::MemoryPoolMt<RouterInfo::Buffer> m_RouterInfoBuffersPool;
|
|
i2p::util::MemoryPoolMt<RouterInfo::Address> m_RouterInfoAddressesPool;
|
|
i2p::util::MemoryPoolMt<RouterInfo::Addresses> m_RouterInfoAddressVectorsPool;
|
|
i2p::util::MemoryPoolMt<Lease> m_LeasesPool;
|
|
};
|
|
|
|
extern NetDb netdb;
|
|
}
|
|
}
|
|
|
|
#endif
|