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89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
#ifndef LEASE_SET_H__
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#define LEASE_SET_H__
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#include <inttypes.h>
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#include <string.h>
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#include <vector>
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#include <memory>
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#include "Identity.h"
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namespace i2p
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{
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namespace tunnel
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{
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class TunnelPool;
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}
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namespace data
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{
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const int LEASE_ENDDATE_THRESHOLD = 31000; // in milliseconds
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struct Lease
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{
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IdentHash tunnelGateway;
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uint32_t tunnelID;
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uint64_t endDate; // 0 means invalid
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bool isUpdated; // trasient
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};
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struct LeaseCmp
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{
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bool operator() (std::shared_ptr<const Lease> l1, std::shared_ptr<const Lease> l2) const
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{
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if (l1->tunnelID != l2->tunnelID)
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return l1->tunnelID < l2->tunnelID;
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else
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return l1->tunnelGateway < l2->tunnelGateway;
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};
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};
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const int MAX_LS_BUFFER_SIZE = 3072;
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const uint8_t MAX_NUM_LEASES = 16;
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class LeaseSet: public RoutingDestination
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{
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public:
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LeaseSet (const uint8_t * buf, size_t len, bool storeLeases = true);
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LeaseSet (std::shared_ptr<const i2p::tunnel::TunnelPool> pool);
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~LeaseSet () { delete[] m_Buffer; };
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void Update (const uint8_t * buf, size_t len);
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bool IsNewer (const uint8_t * buf, size_t len) const;
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void PopulateLeases (); // from buffer
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std::shared_ptr<const IdentityEx> GetIdentity () const { return m_Identity; };
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const uint8_t * GetBuffer () const { return m_Buffer; };
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size_t GetBufferLen () const { return m_BufferLen; };
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bool IsValid () const { return m_IsValid; };
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const std::vector<std::shared_ptr<const Lease> > GetNonExpiredLeases (bool withThreshold = true) const;
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bool HasExpiredLeases () const;
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bool IsExpired () const;
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bool IsEmpty () const { return m_Leases.empty (); };
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uint64_t GetExpirationTime () const { return m_ExpirationTime; };
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bool operator== (const LeaseSet& other) const
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{ return m_BufferLen == other.m_BufferLen && !memcmp (m_Buffer, other.m_Buffer, m_BufferLen); };
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// implements RoutingDestination
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const IdentHash& GetIdentHash () const { return m_Identity->GetIdentHash (); };
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const uint8_t * GetEncryptionPublicKey () const { return m_EncryptionKey; };
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bool IsDestination () const { return true; };
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private:
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void ReadFromBuffer (bool readIdentity = true);
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uint64_t ExtractTimestamp (const uint8_t * buf, size_t len) const; // min expiration time
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private:
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bool m_IsValid, m_StoreLeases; // we don't need to store leases for floodfill
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std::set<std::shared_ptr<Lease>, LeaseCmp> m_Leases;
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uint64_t m_ExpirationTime; // in milliseconds
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std::shared_ptr<const IdentityEx> m_Identity;
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uint8_t m_EncryptionKey[256];
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uint8_t * m_Buffer;
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size_t m_BufferLen;
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};
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}
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}
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#endif
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