mirror of
https://github.com/PurpleI2P/i2pd.git
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83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
/*
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* Copyright (c) 2013-2022, The PurpleI2P Project
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*
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* This file is part of Purple i2pd project and licensed under BSD3
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*
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* See full license text in LICENSE file at top of project tree
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*/
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#ifndef TUNNEL_BASE_H__
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#define TUNNEL_BASE_H__
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#include <inttypes.h>
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#include <memory>
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#include "Timestamp.h"
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#include "I2NPProtocol.h"
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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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const size_t TUNNEL_DATA_MSG_SIZE = 1028;
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const size_t TUNNEL_DATA_ENCRYPTED_SIZE = 1008;
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const size_t TUNNEL_DATA_MAX_PAYLOAD_SIZE = 1003;
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enum TunnelDeliveryType
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{
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eDeliveryTypeLocal = 0,
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eDeliveryTypeTunnel = 1,
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eDeliveryTypeRouter = 2
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};
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struct TunnelMessageBlock
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{
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TunnelDeliveryType deliveryType;
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i2p::data::IdentHash hash;
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uint32_t tunnelID;
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std::shared_ptr<I2NPMessage> data;
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};
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class TunnelBase
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{
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public:
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TunnelBase (uint32_t tunnelID, uint32_t nextTunnelID, const i2p::data::IdentHash& nextIdent):
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m_TunnelID (tunnelID), m_NextTunnelID (nextTunnelID), m_NextIdent (nextIdent),
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m_CreationTime (i2p::util::GetSecondsSinceEpoch ()) {};
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virtual ~TunnelBase () {};
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virtual void Cleanup () {};
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virtual void HandleTunnelDataMsg (std::shared_ptr<i2p::I2NPMessage>&& tunnelMsg) = 0;
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virtual void SendTunnelDataMsg (std::shared_ptr<i2p::I2NPMessage> msg) = 0;
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virtual void FlushTunnelDataMsgs () {};
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virtual void EncryptTunnelMsg (std::shared_ptr<const I2NPMessage> in, std::shared_ptr<I2NPMessage> out) = 0;
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uint32_t GetNextTunnelID () const { return m_NextTunnelID; };
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const i2p::data::IdentHash& GetNextIdentHash () const { return m_NextIdent; };
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virtual uint32_t GetTunnelID () const { return m_TunnelID; }; // as known at our side
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uint32_t GetCreationTime () const { return m_CreationTime; };
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void SetCreationTime (uint32_t t) { m_CreationTime = t; };
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private:
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uint32_t m_TunnelID, m_NextTunnelID;
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i2p::data::IdentHash m_NextIdent;
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uint32_t m_CreationTime; // seconds since epoch
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};
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struct TunnelCreationTimeCmp
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{
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template<typename T>
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bool operator() (const std::shared_ptr<T> & t1, const std::shared_ptr<T> & t2) const
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{
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if (t1->GetCreationTime () != t2->GetCreationTime ())
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return t1->GetCreationTime () > t2->GetCreationTime ();
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else
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return t1 < t2;
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}
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};
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}
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}
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#endif
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