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131 lines
4.5 KiB
C++
131 lines
4.5 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 <vector>
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#include <string>
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#include <thread>
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#include <boost/filesystem.hpp>
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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 "AddressBook.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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class RequestedDestination
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{
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public:
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RequestedDestination (const IdentHash& destination, bool isLeaseSet,
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bool isExploratory = false, i2p::tunnel::TunnelPool * pool = nullptr):
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m_Destination (destination), m_IsLeaseSet (isLeaseSet), m_IsExploratory (isExploratory),
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m_Pool (pool), m_LastRouter (nullptr), m_CreationTime (0) {};
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const IdentHash& GetDestination () const { return m_Destination; };
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int GetNumExcludedPeers () const { return m_ExcludedPeers.size (); };
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const std::set<IdentHash>& GetExcludedPeers () { return m_ExcludedPeers; };
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void ClearExcludedPeers ();
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const RouterInfo * GetLastRouter () const { return m_LastRouter; };
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i2p::tunnel::TunnelPool * GetTunnelPool () { return m_Pool; };
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bool IsExploratory () const { return m_IsExploratory; };
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bool IsLeaseSet () const { return m_IsLeaseSet; };
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bool IsExcluded (const IdentHash& ident) const { return m_ExcludedPeers.count (ident); };
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uint64_t GetCreationTime () const { return m_CreationTime; };
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I2NPMessage * CreateRequestMessage (const RouterInfo * router, const i2p::tunnel::InboundTunnel * replyTunnel);
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I2NPMessage * CreateRequestMessage (const IdentHash& floodfill);
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private:
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IdentHash m_Destination;
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bool m_IsLeaseSet, m_IsExploratory;
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i2p::tunnel::TunnelPool * m_Pool;
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std::set<IdentHash> m_ExcludedPeers;
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const RouterInfo * m_LastRouter;
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uint64_t m_CreationTime;
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};
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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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void AddRouterInfo (const IdentHash& ident, uint8_t * buf, int len);
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void AddLeaseSet (const IdentHash& ident, uint8_t * buf, int len);
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RouterInfo * FindRouter (const IdentHash& ident) const;
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LeaseSet * FindLeaseSet (const IdentHash& destination) const;
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const IdentHash * FindAddress (const std::string& address) { return m_AddressBook.FindAddress (address); }; // TODO: move AddressBook away from NetDb
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void Subscribe (const IdentHash& ident, i2p::tunnel::TunnelPool * pool = nullptr); // keep LeaseSets upto date
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void Unsubscribe (const IdentHash& ident);
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void PublishLeaseSet (const LeaseSet * leaseSet, i2p::tunnel::TunnelPool * pool);
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void RequestDestination (const IdentHash& destination, bool isLeaseSet = false,
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i2p::tunnel::TunnelPool * pool = nullptr);
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void HandleDatabaseStoreMsg (uint8_t * buf, size_t len);
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void HandleDatabaseSearchReplyMsg (I2NPMessage * msg);
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void HandleDatabaseLookupMsg (I2NPMessage * msg);
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const RouterInfo * GetRandomRouter (const RouterInfo * compatibleWith = nullptr) const;
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void PostI2NPMsg (I2NPMessage * msg);
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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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bool CreateNetDb(boost::filesystem::path directory);
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void Load (const char * directory);
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void SaveUpdated (const char * directory);
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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 ValidateSubscriptions ();
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const RouterInfo * GetClosestFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded) const;
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void KeyspaceRotation ();
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void ManageLeaseSets ();
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RequestedDestination * CreateRequestedDestination (const IdentHash& dest,
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bool isLeaseSet, bool isExploratory = false, i2p::tunnel::TunnelPool * pool = nullptr);
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bool DeleteRequestedDestination (const IdentHash& dest); // returns true if found
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void DeleteRequestedDestination (RequestedDestination * dest);
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private:
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std::map<IdentHash, LeaseSet *> m_LeaseSets;
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std::map<IdentHash, RouterInfo *> m_RouterInfos;
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std::vector<RouterInfo *> m_Floodfills;
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std::mutex m_RequestedDestinationsMutex;
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std::map<IdentHash, RequestedDestination *> m_RequestedDestinations;
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std::set<IdentHash> m_Subscriptions;
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bool m_IsRunning;
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int m_ReseedRetries;
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std::thread * m_Thread;
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i2p::util::Queue<I2NPMessage> m_Queue; // of I2NPDatabaseStoreMsg
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AddressBook m_AddressBook;
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static const char m_NetDbPath[];
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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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