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284 lines
10 KiB
C++
284 lines
10 KiB
C++
/*
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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 BOB_H__
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#define BOB_H__
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#include <inttypes.h>
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#include <thread>
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#include <memory>
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#include <map>
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#include <string>
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#include <boost/asio.hpp>
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#include "util.h"
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#include "I2PTunnel.h"
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#include "I2PService.h"
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#include "Identity.h"
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#include "LeaseSet.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 BOB_COMMAND_BUFFER_SIZE = 1024;
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const char BOB_COMMAND_ZAP[] = "zap";
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const char BOB_COMMAND_QUIT[] = "quit";
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const char BOB_COMMAND_START[] = "start";
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const char BOB_COMMAND_STOP[] = "stop";
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const char BOB_COMMAND_SETNICK[] = "setnick";
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const char BOB_COMMAND_GETNICK[] = "getnick";
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const char BOB_COMMAND_NEWKEYS[] = "newkeys";
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const char BOB_COMMAND_GETKEYS[] = "getkeys";
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const char BOB_COMMAND_SETKEYS[] = "setkeys";
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const char BOB_COMMAND_GETDEST[] = "getdest";
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const char BOB_COMMAND_OUTHOST[] = "outhost";
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const char BOB_COMMAND_OUTPORT[] = "outport";
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const char BOB_COMMAND_INHOST[] = "inhost";
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const char BOB_COMMAND_INPORT[] = "inport";
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const char BOB_COMMAND_QUIET[] = "quiet";
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const char BOB_COMMAND_LOOKUP[] = "lookup";
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const char BOB_COMMAND_LOOKUP_LOCAL[] = "lookuplocal";
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const char BOB_COMMAND_CLEAR[] = "clear";
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const char BOB_COMMAND_LIST[] = "list";
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const char BOB_COMMAND_OPTION[] = "option";
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const char BOB_COMMAND_STATUS[] = "status";
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const char BOB_COMMAND_HELP[] = "help";
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const char BOB_HELP_ZAP[] = "zap - Shuts down BOB.";
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const char BOB_HELP_QUIT[] = "quit - Quits this session with BOB.";
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const char BOB_HELP_START[] = "start - Starts the current nicknamed tunnel.";
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const char BOB_HELP_STOP[] = "stop - Stops the current nicknamed tunnel.";
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const char BOB_HELP_SETNICK[] = "setnick <NICKNAME> - Creates a new nickname.";
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const char BOB_HELP_GETNICK[] = "getnick <TUNNELNAME> - Sets the nickname from the database.";
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const char BOB_HELP_NEWKEYS[] = "newkeys - Generate a new keypair for the current nickname.";
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const char BOB_HELP_GETKEYS[] = "getkeys - Return the keypair for the current nickname.";
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const char BOB_HELP_SETKEYS[] = "setkeys <BASE64_KEYPAIR> - Sets the keypair for the current nickname.";
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const char BOB_HELP_GETDEST[] = "getdest - Return the destination for the current nickname.";
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const char BOB_HELP_OUTHOST[] = "outhost <HOSTNAME|IP> - Set the outhound hostname or IP.";
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const char BOB_HELP_OUTPORT[] = "outport <PORT_NUMBER> - Set the outbound port that nickname contacts.";
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const char BOB_HELP_INHOST[] = "inhost <HOSTNAME|IP> - Set the inbound hostname or IP.";
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const char BOB_HELP_INPORT[] = "inport <PORT_NUMBER> - Set the inbound port number nickname listens on.";
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const char BOB_HELP_QUIET[] = "quiet <True|False> - Whether to send the incoming destination.";
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const char BOB_HELP_LOOKUP[] = "lookup <I2P_HOSTNAME> - Look up an I2P hostname.";
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const char BOB_HELP_CLEAR[] = "clear - Clear the current nickname out of the list.";
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const char BOB_HELP_LIST[] = "list - List all tunnels.";
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const char BOB_HELP_OPTION[] = "option <KEY>=<VALUE> - Set an option. NOTE: Don't use any spaces.";
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const char BOB_HELP_STATUS[] = "status <NICKNAME> - Display status of a nicknamed tunnel.";
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const char BOB_HELP_HELP [] = "help <COMMAND> - Get help on a command.";
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class BOBI2PTunnel: public I2PService
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{
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public:
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BOBI2PTunnel (std::shared_ptr<ClientDestination> localDestination):
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I2PService (localDestination) {};
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virtual void Start () {};
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virtual void Stop () {};
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};
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class BOBI2PInboundTunnel: public BOBI2PTunnel
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{
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struct AddressReceiver
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{
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std::shared_ptr<boost::asio::ip::tcp::socket> socket;
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char buffer[BOB_COMMAND_BUFFER_SIZE + 1]; // for destination base64 address
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uint8_t * data; // pointer to buffer
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size_t dataLen, bufferOffset;
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AddressReceiver (): data (nullptr), dataLen (0), bufferOffset (0) {};
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};
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public:
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BOBI2PInboundTunnel (const boost::asio::ip::tcp::endpoint& ep, std::shared_ptr<ClientDestination> localDestination);
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~BOBI2PInboundTunnel ();
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void Start ();
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void Stop ();
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private:
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void Accept ();
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void HandleAccept (const boost::system::error_code& ecode, std::shared_ptr<AddressReceiver> receiver);
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void ReceiveAddress (std::shared_ptr<AddressReceiver> receiver);
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void HandleReceivedAddress (const boost::system::error_code& ecode, std::size_t bytes_transferred,
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std::shared_ptr<AddressReceiver> receiver);
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void HandleDestinationRequestComplete (std::shared_ptr<i2p::data::LeaseSet> leaseSet, std::shared_ptr<AddressReceiver> receiver);
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void CreateConnection (std::shared_ptr<AddressReceiver> receiver, std::shared_ptr<const i2p::data::LeaseSet> leaseSet);
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private:
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boost::asio::ip::tcp::acceptor m_Acceptor;
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};
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class BOBI2POutboundTunnel: public BOBI2PTunnel
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{
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public:
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BOBI2POutboundTunnel (const std::string& outhost, uint16_t port, std::shared_ptr<ClientDestination> localDestination, bool quiet);
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void Start ();
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void Stop ();
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void SetQuiet () { m_IsQuiet = true; };
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private:
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void Accept ();
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void HandleAccept (std::shared_ptr<i2p::stream::Stream> stream);
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private:
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boost::asio::ip::tcp::endpoint m_Endpoint;
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bool m_IsQuiet;
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};
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class BOBDestination
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{
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public:
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BOBDestination (std::shared_ptr<ClientDestination> localDestination,
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const std::string &nickname, const std::string &inhost, const std::string &outhost,
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const uint16_t inport, const uint16_t outport, const bool quiet);
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~BOBDestination ();
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void Start ();
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void Stop ();
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void StopTunnels ();
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void CreateInboundTunnel (uint16_t port, const std::string& inhost);
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void CreateOutboundTunnel (const std::string& outhost, uint16_t port, bool quiet);
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const std::string& GetNickname() const { return m_Nickname; }
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const std::string& GetInHost() const { return m_InHost; }
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const std::string& GetOutHost() const { return m_OutHost; }
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uint16_t GetInPort() const { return m_InPort; }
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uint16_t GetOutPort() const { return m_OutPort; }
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bool GetQuiet() const { return m_Quiet; }
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bool IsRunning() const { return m_IsRunning; }
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const i2p::data::PrivateKeys& GetKeys () const { return m_LocalDestination->GetPrivateKeys (); };
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std::shared_ptr<ClientDestination> GetLocalDestination () const { return m_LocalDestination; };
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private:
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std::shared_ptr<ClientDestination> m_LocalDestination;
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BOBI2POutboundTunnel * m_OutboundTunnel;
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BOBI2PInboundTunnel * m_InboundTunnel;
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std::string m_Nickname;
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std::string m_InHost, m_OutHost;
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uint16_t m_InPort, m_OutPort;
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bool m_Quiet;
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bool m_IsRunning;
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};
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class BOBCommandChannel;
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class BOBCommandSession: public std::enable_shared_from_this<BOBCommandSession>
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{
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public:
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BOBCommandSession (BOBCommandChannel& owner);
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~BOBCommandSession ();
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void Terminate ();
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boost::asio::ip::tcp::socket& GetSocket () { return m_Socket; };
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void SendVersion ();
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// command handlers
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void ZapCommandHandler (const char * operand, size_t len);
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void QuitCommandHandler (const char * operand, size_t len);
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void StartCommandHandler (const char * operand, size_t len);
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void StopCommandHandler (const char * operand, size_t len);
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void SetNickCommandHandler (const char * operand, size_t len);
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void GetNickCommandHandler (const char * operand, size_t len);
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void NewkeysCommandHandler (const char * operand, size_t len);
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void SetkeysCommandHandler (const char * operand, size_t len);
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void GetkeysCommandHandler (const char * operand, size_t len);
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void GetdestCommandHandler (const char * operand, size_t len);
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void OuthostCommandHandler (const char * operand, size_t len);
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void OutportCommandHandler (const char * operand, size_t len);
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void InhostCommandHandler (const char * operand, size_t len);
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void InportCommandHandler (const char * operand, size_t len);
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void QuietCommandHandler (const char * operand, size_t len);
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void LookupCommandHandler (const char * operand, size_t len);
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void LookupLocalCommandHandler (const char * operand, size_t len);
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void ClearCommandHandler (const char * operand, size_t len);
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void ListCommandHandler (const char * operand, size_t len);
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void OptionCommandHandler (const char * operand, size_t len);
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void StatusCommandHandler (const char * operand, size_t len);
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void HelpCommandHandler (const char * operand, size_t len);
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private:
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void Receive ();
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void HandleReceivedLine(const boost::system::error_code& ecode, std::size_t bytes_transferred);
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void HandleReceived (const boost::system::error_code& ecode, std::size_t bytes_transferred);
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void Send ();
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void HandleSent (const boost::system::error_code& ecode, std::size_t bytes_transferred);
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void SendReplyOK (const char * msg = nullptr);
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void SendReplyError (const char * msg);
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void SendRaw (const char * data);
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void BuildStatusLine(bool currentTunnel, std::shared_ptr<BOBDestination> destination, std::string &out);
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private:
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BOBCommandChannel& m_Owner;
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boost::asio::ip::tcp::socket m_Socket;
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boost::asio::streambuf m_ReceiveBuffer, m_SendBuffer;
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bool m_IsOpen, m_IsQuiet, m_IsActive;
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std::string m_Nickname, m_InHost, m_OutHost;
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uint16_t m_InPort, m_OutPort;
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i2p::data::PrivateKeys m_Keys;
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std::map<std::string, std::string> m_Options;
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std::shared_ptr<BOBDestination> m_CurrentDestination;
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};
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typedef void (BOBCommandSession::*BOBCommandHandler)(const char * operand, size_t len);
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class BOBCommandChannel: private i2p::util::RunnableService
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{
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public:
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BOBCommandChannel (const std::string& address, uint16_t port);
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~BOBCommandChannel ();
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void Start ();
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void Stop ();
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boost::asio::io_service& GetService () { return GetIOService (); };
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void AddDestination (const std::string& name, std::shared_ptr<BOBDestination> dest);
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void DeleteDestination (const std::string& name);
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std::shared_ptr<BOBDestination> FindDestination (const std::string& name);
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private:
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void Accept ();
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void HandleAccept(const boost::system::error_code& ecode, std::shared_ptr<BOBCommandSession> session);
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private:
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boost::asio::ip::tcp::acceptor m_Acceptor;
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std::map<std::string, std::shared_ptr<BOBDestination> > m_Destinations;
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std::map<std::string, BOBCommandHandler> m_CommandHandlers;
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std::map<std::string, std::string> m_HelpStrings;
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public:
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const decltype(m_CommandHandlers)& GetCommandHandlers () const { return m_CommandHandlers; };
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const decltype(m_HelpStrings)& GetHelpStrings () const { return m_HelpStrings; };
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const decltype(m_Destinations)& GetDestinations () const { return m_Destinations; };
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};
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}
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}
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#endif
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