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123 lines
4.1 KiB
C++
123 lines
4.1 KiB
C++
#ifndef NETDB_H__
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#define NETDB_H__
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#include <inttypes.h>
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#include <set>
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#include <map>
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#include <list>
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#include <string>
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#include <thread>
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#include <mutex>
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#include "Base.h"
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#include "Gzip.h"
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#include "FS.h"
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#include "Queue.h"
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#include "I2NPProtocol.h"
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#include "RouterInfo.h"
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#include "LeaseSet.h"
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#include "Tunnel.h"
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#include "TunnelPool.h"
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#include "Reseed.h"
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#include "NetDbRequests.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 int NETDB_MIN_ROUTERS = 90;
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const int NETDB_FLOODFILL_EXPIRATION_TIMEOUT = 60*60; // 1 hour, in seconds
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const int NETDB_INTRODUCEE_EXPIRATION_TIMEOUT = 65*60;
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const int NETDB_MIN_EXPIRATION_TIMEOUT = 90*60; // 1.5 hours
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const int NETDB_MAX_EXPIRATION_TIMEOUT = 27*60*60; // 27 hours
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class NetDb
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{
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public:
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NetDb ();
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~NetDb ();
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void Start ();
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void Stop ();
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bool AddRouterInfo (const uint8_t * buf, int len);
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bool AddRouterInfo (const IdentHash& ident, const uint8_t * buf, int len);
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bool AddLeaseSet (const IdentHash& ident, const uint8_t * buf, int len, std::shared_ptr<i2p::tunnel::InboundTunnel> from);
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std::shared_ptr<RouterInfo> FindRouter (const IdentHash& ident) const;
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std::shared_ptr<LeaseSet> FindLeaseSet (const IdentHash& destination) const;
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std::shared_ptr<RouterProfile> FindRouterProfile (const IdentHash& ident) const;
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void RequestDestination (const IdentHash& destination, RequestedDestination::RequestComplete requestComplete = nullptr);
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void HandleDatabaseStoreMsg (std::shared_ptr<const I2NPMessage> msg);
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void HandleDatabaseSearchReplyMsg (std::shared_ptr<const I2NPMessage> msg);
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void HandleDatabaseLookupMsg (std::shared_ptr<const I2NPMessage> msg);
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std::shared_ptr<const RouterInfo> GetRandomRouter () const;
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std::shared_ptr<const RouterInfo> GetRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith) const;
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std::shared_ptr<const RouterInfo> GetHighBandwidthRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith) const;
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std::shared_ptr<const RouterInfo> GetRandomPeerTestRouter () const;
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std::shared_ptr<const RouterInfo> GetRandomIntroducer () const;
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std::shared_ptr<const RouterInfo> GetClosestFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded, bool closeThanUsOnly = false) const;
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std::vector<IdentHash> GetClosestFloodfills (const IdentHash& destination, size_t num,
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std::set<IdentHash>& excluded, bool closeThanUsOnly = false) const;
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std::shared_ptr<const RouterInfo> GetClosestNonFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded) const;
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void SetUnreachable (const IdentHash& ident, bool unreachable);
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void PostI2NPMsg (std::shared_ptr<const I2NPMessage> msg);
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void Reseed ();
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Families& GetFamilies () { return m_Families; };
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// for web interface
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int GetNumRouters () const { return m_RouterInfos.size (); };
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int GetNumFloodfills () const { return m_Floodfills.size (); };
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int GetNumLeaseSets () const { return m_LeaseSets.size (); };
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private:
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void Load ();
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bool LoadRouterInfo (const std::string & path);
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void SaveUpdated ();
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void Run (); // exploratory thread
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void Explore (int numDestinations);
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void Publish ();
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void ManageLeaseSets ();
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void ManageRequests ();
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void ManageLookupResponses ();
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template<typename Filter>
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std::shared_ptr<const RouterInfo> GetRandomRouter (Filter filter) const;
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private:
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std::map<IdentHash, std::shared_ptr<LeaseSet> > m_LeaseSets;
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mutable std::mutex m_RouterInfosMutex;
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std::map<IdentHash, std::shared_ptr<RouterInfo> > m_RouterInfos;
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mutable std::mutex m_FloodfillsMutex;
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std::list<std::shared_ptr<RouterInfo> > m_Floodfills;
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bool m_IsRunning;
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uint64_t m_LastLoad;
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std::thread * m_Thread;
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i2p::util::Queue<std::shared_ptr<const I2NPMessage> > m_Queue; // of I2NPDatabaseStoreMsg
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GzipInflator m_Inflator;
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Reseeder * m_Reseeder;
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Families m_Families;
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i2p::fs::HashedStorage m_Storage;
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friend class NetDbRequests;
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NetDbRequests m_Requests;
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std::map<IdentHash, std::pair<std::vector<IdentHash>, uint64_t> > m_LookupResponses; // ident->(closest FFs, timestamp)
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};
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extern NetDb netdb;
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}
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}
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#endif
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