mirror of https://github.com/PurpleI2P/i2pd.git
I2P: End-to-End encrypted and anonymous Internet
https://i2pd.website/
269 lines
8.6 KiB
269 lines
8.6 KiB
/* |
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* Copyright (c) 2013-2023, 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 I2PTUNNEL_H__ |
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#define I2PTUNNEL_H__ |
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#include <inttypes.h> |
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#include <string> |
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#include <set> |
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#include <tuple> |
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#include <memory> |
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#include <sstream> |
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#include <boost/asio.hpp> |
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#include <boost/asio/ssl.hpp> |
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#include "Identity.h" |
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#include "Destination.h" |
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#include "Streaming.h" |
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#include "I2PService.h" |
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#include "AddressBook.h" |
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namespace i2p |
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{ |
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namespace client |
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{ |
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const size_t I2P_TUNNEL_CONNECTION_BUFFER_SIZE = 65536; |
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const int I2P_TUNNEL_CONNECTION_MAX_IDLE = 3600; // in seconds |
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const int I2P_TUNNEL_DESTINATION_REQUEST_TIMEOUT = 10; // in seconds |
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// for HTTP tunnels |
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const char X_I2P_DEST_HASH[] = "X-I2P-DestHash"; // hash in base64 |
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const char X_I2P_DEST_B64[] = "X-I2P-DestB64"; // full address in base64 |
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const char X_I2P_DEST_B32[] = "X-I2P-DestB32"; // .b32.i2p address |
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const int I2P_TUNNEL_HTTP_MAX_HEADER_SIZE = 8192; |
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class I2PTunnelConnection: public I2PServiceHandler, public std::enable_shared_from_this<I2PTunnelConnection> |
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{ |
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public: |
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I2PTunnelConnection (I2PService * owner, std::shared_ptr<boost::asio::ip::tcp::socket> socket, |
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std::shared_ptr<const i2p::data::LeaseSet> leaseSet, uint16_t port = 0); // to I2P |
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I2PTunnelConnection (I2PService * owner, std::shared_ptr<boost::asio::ip::tcp::socket> socket, |
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std::shared_ptr<i2p::stream::Stream> stream); // to I2P using simplified API |
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I2PTunnelConnection (I2PService * owner, std::shared_ptr<i2p::stream::Stream> stream, |
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const boost::asio::ip::tcp::endpoint& target, bool quiet = true, |
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std::shared_ptr<boost::asio::ssl::context> sslCtx = nullptr); // from I2P |
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~I2PTunnelConnection (); |
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void I2PConnect (const uint8_t * msg = nullptr, size_t len = 0); |
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void Connect (bool isUniqueLocal = true); |
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void Connect (const boost::asio::ip::address& localAddress); |
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protected: |
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void Terminate (); |
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void Receive (); |
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void StreamReceive (); |
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virtual void Write (const uint8_t * buf, size_t len); // can be overloaded |
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virtual void WriteToStream (const uint8_t * buf, size_t len); // can be overloaded |
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std::shared_ptr<boost::asio::ip::tcp::socket> GetSocket () const { return m_Socket; }; |
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std::shared_ptr<boost::asio::ssl::stream<boost::asio::ip::tcp::socket&> > GetSSL () const { return m_SSL; }; |
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private: |
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void HandleConnect (const boost::system::error_code& ecode); |
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void HandleHandshake (const boost::system::error_code& ecode); |
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void Established (); |
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void HandleReceive (const boost::system::error_code& ecode, std::size_t bytes_transferred); |
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void HandleWrite (const boost::system::error_code& ecode); |
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void HandleStreamReceive (const boost::system::error_code& ecode, std::size_t bytes_transferred); |
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private: |
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uint8_t m_Buffer[I2P_TUNNEL_CONNECTION_BUFFER_SIZE], m_StreamBuffer[I2P_TUNNEL_CONNECTION_BUFFER_SIZE]; |
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std::shared_ptr<boost::asio::ip::tcp::socket> m_Socket; |
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std::shared_ptr<boost::asio::ssl::stream<boost::asio::ip::tcp::socket&> > m_SSL; |
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std::shared_ptr<i2p::stream::Stream> m_Stream; |
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boost::asio::ip::tcp::endpoint m_RemoteEndpoint; |
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bool m_IsQuiet; // don't send destination |
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}; |
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class I2PClientTunnelConnectionHTTP: public I2PTunnelConnection |
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{ |
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public: |
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I2PClientTunnelConnectionHTTP (I2PService * owner, std::shared_ptr<boost::asio::ip::tcp::socket> socket, |
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std::shared_ptr<i2p::stream::Stream> stream): |
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I2PTunnelConnection (owner, socket, stream), m_HeaderSent (false), |
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m_ConnectionSent (false), m_ProxyConnectionSent (false) {}; |
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protected: |
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void Write (const uint8_t * buf, size_t len); |
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private: |
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std::stringstream m_InHeader, m_OutHeader; |
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bool m_HeaderSent, m_ConnectionSent, m_ProxyConnectionSent; |
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}; |
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class I2PServerTunnelConnectionHTTP: public I2PTunnelConnection |
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{ |
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public: |
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I2PServerTunnelConnectionHTTP (I2PService * owner, std::shared_ptr<i2p::stream::Stream> stream, |
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const boost::asio::ip::tcp::endpoint& target, const std::string& host, |
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std::shared_ptr<boost::asio::ssl::context> sslCtx = nullptr); |
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protected: |
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void Write (const uint8_t * buf, size_t len); |
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void WriteToStream (const uint8_t * buf, size_t len); |
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private: |
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std::string m_Host; |
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std::stringstream m_InHeader, m_OutHeader; |
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bool m_HeaderSent, m_ResponseHeaderSent; |
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std::shared_ptr<const i2p::data::IdentityEx> m_From; |
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}; |
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class I2PTunnelConnectionIRC: public I2PTunnelConnection |
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{ |
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public: |
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I2PTunnelConnectionIRC (I2PService * owner, std::shared_ptr<i2p::stream::Stream> stream, |
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const boost::asio::ip::tcp::endpoint& target, const std::string& m_WebircPass, |
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std::shared_ptr<boost::asio::ssl::context> sslCtx = nullptr); |
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protected: |
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void Write (const uint8_t * buf, size_t len); |
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private: |
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std::shared_ptr<const i2p::data::IdentityEx> m_From; |
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std::stringstream m_OutPacket, m_InPacket; |
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bool m_NeedsWebIrc; |
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std::string m_WebircPass; |
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}; |
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class I2PClientTunnel: public TCPIPAcceptor |
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{ |
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protected: |
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// Implements TCPIPAcceptor |
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std::shared_ptr<I2PServiceHandler> CreateHandler(std::shared_ptr<boost::asio::ip::tcp::socket> socket); |
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public: |
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I2PClientTunnel (const std::string& name, const std::string& destination, |
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const std::string& address, uint16_t port, std::shared_ptr<ClientDestination> localDestination, uint16_t destinationPort = 0); |
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~I2PClientTunnel () {} |
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void Start (); |
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void Stop (); |
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const char* GetName() { return m_Name.c_str (); } |
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void SetKeepAliveInterval (uint32_t keepAliveInterval); |
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private: |
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std::shared_ptr<const Address> GetAddress (); |
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void ScheduleKeepAliveTimer (); |
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void HandleKeepAliveTimer (const boost::system::error_code& ecode); |
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private: |
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std::string m_Name, m_Destination; |
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std::shared_ptr<const Address> m_Address; |
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uint16_t m_DestinationPort; |
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uint32_t m_KeepAliveInterval; |
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std::unique_ptr<boost::asio::deadline_timer> m_KeepAliveTimer; |
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}; |
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class I2PServerTunnel: public I2PService |
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{ |
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public: |
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I2PServerTunnel (const std::string& name, const std::string& address, uint16_t port, |
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std::shared_ptr<ClientDestination> localDestination, uint16_t inport = 0, bool gzip = true); |
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void Start (); |
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void Stop (); |
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void SetAccessList (const std::set<i2p::data::IdentHash>& accessList); |
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void SetUniqueLocal (bool isUniqueLocal) { m_IsUniqueLocal = isUniqueLocal; } |
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bool IsUniqueLocal () const { return m_IsUniqueLocal; } |
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void SetSSL (bool ssl); |
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std::shared_ptr<boost::asio::ssl::context> GetSSLCtx () const { return m_SSLCtx; }; |
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void SetLocalAddress (const std::string& localAddress); |
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const std::string& GetAddress() const { return m_Address; } |
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uint16_t GetPort () const { return m_Port; }; |
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uint16_t GetLocalPort () const { return m_PortDestination->GetLocalPort (); }; |
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const boost::asio::ip::tcp::endpoint& GetEndpoint () const { return m_Endpoint; } |
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const char* GetName() { return m_Name.c_str (); } |
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private: |
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void HandleResolve (const boost::system::error_code& ecode, boost::asio::ip::tcp::resolver::iterator it, |
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std::shared_ptr<boost::asio::ip::tcp::resolver> resolver); |
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void Accept (); |
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void HandleAccept (std::shared_ptr<i2p::stream::Stream> stream); |
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virtual std::shared_ptr<I2PTunnelConnection> CreateI2PConnection (std::shared_ptr<i2p::stream::Stream> stream); |
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private: |
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bool m_IsUniqueLocal; |
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std::string m_Name, m_Address; |
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uint16_t m_Port; |
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boost::asio::ip::tcp::endpoint m_Endpoint; |
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std::shared_ptr<i2p::stream::StreamingDestination> m_PortDestination; |
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std::set<i2p::data::IdentHash> m_AccessList; |
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bool m_IsAccessList; |
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std::unique_ptr<boost::asio::ip::address> m_LocalAddress; |
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std::shared_ptr<boost::asio::ssl::context> m_SSLCtx; |
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}; |
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class I2PServerTunnelHTTP: public I2PServerTunnel |
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{ |
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public: |
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I2PServerTunnelHTTP (const std::string& name, const std::string& address, uint16_t port, |
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std::shared_ptr<ClientDestination> localDestination, const std::string& host, |
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uint16_t inport = 0, bool gzip = true); |
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private: |
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std::shared_ptr<I2PTunnelConnection> CreateI2PConnection (std::shared_ptr<i2p::stream::Stream> stream); |
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private: |
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std::string m_Host; |
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}; |
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class I2PServerTunnelIRC: public I2PServerTunnel |
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{ |
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public: |
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I2PServerTunnelIRC (const std::string& name, const std::string& address, uint16_t port, |
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std::shared_ptr<ClientDestination> localDestination, const std::string& webircpass, |
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uint16_t inport = 0, bool gzip = true); |
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private: |
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std::shared_ptr<I2PTunnelConnection> CreateI2PConnection (std::shared_ptr<i2p::stream::Stream> stream); |
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private: |
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std::string m_WebircPass; |
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}; |
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boost::asio::ip::address GetLoopbackAddressFor(const i2p::data::IdentHash & addr); |
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} |
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} |
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#endif
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