i2pd/NetDb.h

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#ifndef NETDB_H__
#define NETDB_H__
#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"
#include "I2NPProtocol.h"
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#include "RouterInfo.h"
#include "LeaseSet.h"
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#include "Tunnel.h"
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#include "AddressBook.h"
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namespace i2p
{
namespace data
{
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class RequestedDestination
{
public:
RequestedDestination (const IdentHash& destination, bool isLeaseSet, bool isExploratory = false):
m_Destination (destination), m_IsLeaseSet (isLeaseSet), m_IsExploratory (isExploratory),
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m_LastRouter (nullptr), m_CreationTime (0) {};
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const IdentHash& GetDestination () const { return m_Destination; };
int GetNumExcludedPeers () const { return m_ExcludedPeers.size (); };
const std::set<IdentHash>& GetExcludedPeers () { return m_ExcludedPeers; };
void ClearExcludedPeers ();
const RouterInfo * GetLastRouter () const { return m_LastRouter; };
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bool IsExploratory () const { return m_IsExploratory; };
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);
I2NPMessage * CreateRequestMessage (const IdentHash& floodfill);
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private:
IdentHash m_Destination;
bool m_IsLeaseSet, m_IsExploratory;
std::set<IdentHash> m_ExcludedPeers;
const RouterInfo * m_LastRouter;
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uint64_t m_CreationTime;
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};
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class NetDb
{
public:
NetDb ();
~NetDb ();
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void Start ();
void Stop ();
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void AddRouterInfo (const IdentHash& ident, uint8_t * buf, int len);
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); // keep LeaseSets upto date
void Unsubscribe (const IdentHash& ident);
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void RequestDestination (const IdentHash& destination, bool isLeaseSet = false);
void HandleDatabaseStoreMsg (uint8_t * buf, size_t len);
void HandleDatabaseSearchReplyMsg (I2NPMessage * msg);
void HandleDatabaseLookupMsg (I2NPMessage * msg);
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const RouterInfo * GetRandomRouter (const RouterInfo * compatibleWith = nullptr) const;
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void PostI2NPMsg (I2NPMessage * msg);
// for web interface
int GetNumRouters () const { return m_RouterInfos.size (); };
int GetNumFloodfills () const { return m_Floodfills.size (); };
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 ();
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,
bool isLeaseSet, bool isExploratory = false);
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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;
std::map<IdentHash, RouterInfo *> m_RouterInfos;
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std::vector<RouterInfo *> m_Floodfills;
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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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};
extern NetDb netdb;
}
}
#endif