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I2P: End-to-End encrypted and anonymous Internet
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505 lines
18 KiB
505 lines
18 KiB
// There is bug in boost 1.49 with gcc 4.7 coming with Debian Wheezy |
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#define GCC47_BOOST149 ((BOOST_VERSION == 104900) && (__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) |
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#include <stdio.h> |
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#include <sstream> |
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#include <openssl/x509.h> |
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#include <openssl/pem.h> |
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#include <boost/lexical_cast.hpp> |
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#include <boost/date_time/local_time/local_time.hpp> |
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#include <boost/date_time/posix_time/posix_time.hpp> |
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#if !GCC47_BOOST149 |
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#include <boost/property_tree/json_parser.hpp> |
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#endif |
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#include "Log.h" |
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#include "NetDb.h" |
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#include "RouterContext.h" |
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#include "Daemon.h" |
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#include "Tunnel.h" |
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#include "Timestamp.h" |
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#include "Transports.h" |
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#include "version.h" |
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#include "I2PControl.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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I2PControlService::I2PControlService (int port): |
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m_Password (I2P_CONTROL_DEFAULT_PASSWORD), m_IsRunning (false), m_Thread (nullptr), |
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m_Acceptor (m_Service, boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(), port)), |
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m_SSLContext (m_Service, boost::asio::ssl::context::sslv23), |
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m_ShutdownTimer (m_Service) |
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{ |
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// certificate |
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auto path = GetPath (); |
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if (!boost::filesystem::exists (path)) |
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{ |
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if (!boost::filesystem::create_directory (path)) |
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LogPrint (eLogError, "Failed to create i2pcontrol directory"); |
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} |
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if (!boost::filesystem::exists (path / I2P_CONTROL_KEY_FILE) || |
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!boost::filesystem::exists (path / I2P_CONTROL_CERT_FILE)) |
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{ |
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// create new certificate |
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CreateCertificate (); |
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LogPrint (eLogInfo, "I2PControl certificates created"); |
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} |
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m_SSLContext.set_options (boost::asio::ssl::context::default_workarounds | boost::asio::ssl::context::no_sslv2 | boost::asio::ssl::context::single_dh_use); |
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m_SSLContext.use_certificate_file ((path / I2P_CONTROL_CERT_FILE).string (), boost::asio::ssl::context::pem); |
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m_SSLContext.use_private_key_file ((path / I2P_CONTROL_KEY_FILE).string (), boost::asio::ssl::context::pem); |
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|
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// handlers |
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m_MethodHandlers[I2P_CONTROL_METHOD_AUTHENTICATE] = &I2PControlService::AuthenticateHandler; |
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m_MethodHandlers[I2P_CONTROL_METHOD_ECHO] = &I2PControlService::EchoHandler; |
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m_MethodHandlers[I2P_CONTROL_METHOD_I2PCONTROL] = &I2PControlService::I2PControlHandler; |
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m_MethodHandlers[I2P_CONTROL_METHOD_ROUTER_INFO] = &I2PControlService::RouterInfoHandler; |
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m_MethodHandlers[I2P_CONTROL_METHOD_ROUTER_MANAGER] = &I2PControlService::RouterManagerHandler; |
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m_MethodHandlers[I2P_CONTROL_METHOD_NETWORK_SETTING] = &I2PControlService::NetworkSettingHandler; |
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|
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// RouterInfo |
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m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_UPTIME] = &I2PControlService::UptimeHandler; |
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m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_VERSION] = &I2PControlService::VersionHandler; |
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m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_STATUS] = &I2PControlService::StatusHandler; |
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m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_NETDB_KNOWNPEERS] = &I2PControlService::NetDbKnownPeersHandler; |
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m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_NETDB_ACTIVEPEERS] = &I2PControlService::NetDbActivePeersHandler; |
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m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_NET_STATUS] = &I2PControlService::NetStatusHandler; |
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m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_TUNNELS_PARTICIPATING] = &I2PControlService::TunnelsParticipatingHandler; |
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m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_BW_IB_1S] = &I2PControlService::InboundBandwidth1S ; |
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m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_BW_OB_1S] = &I2PControlService::OutboundBandwidth1S ; |
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|
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// RouterManager |
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m_RouterManagerHandlers[I2P_CONTROL_ROUTER_MANAGER_SHUTDOWN] = &I2PControlService::ShutdownHandler; |
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m_RouterManagerHandlers[I2P_CONTROL_ROUTER_MANAGER_SHUTDOWN_GRACEFUL] = &I2PControlService::ShutdownGracefulHandler; |
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m_RouterManagerHandlers[I2P_CONTROL_ROUTER_MANAGER_RESEED] = &I2PControlService::ReseedHandler; |
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} |
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I2PControlService::~I2PControlService () |
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{ |
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Stop (); |
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} |
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void I2PControlService::Start () |
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{ |
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if (!m_IsRunning) |
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{ |
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Accept (); |
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m_IsRunning = true; |
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m_Thread = new std::thread (std::bind (&I2PControlService::Run, this)); |
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} |
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} |
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void I2PControlService::Stop () |
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{ |
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if (m_IsRunning) |
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{ |
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m_IsRunning = false; |
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m_Acceptor.cancel (); |
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m_Service.stop (); |
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if (m_Thread) |
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{ |
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m_Thread->join (); |
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delete m_Thread; |
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m_Thread = nullptr; |
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} |
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} |
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} |
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void I2PControlService::Run () |
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{ |
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while (m_IsRunning) |
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{ |
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try |
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{ |
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m_Service.run (); |
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} |
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catch (std::exception& ex) |
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{ |
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LogPrint (eLogError, "I2PControl: ", ex.what ()); |
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} |
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} |
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} |
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void I2PControlService::Accept () |
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{ |
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auto newSocket = std::make_shared<ssl_socket> (m_Service, m_SSLContext); |
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m_Acceptor.async_accept (newSocket->lowest_layer(), std::bind (&I2PControlService::HandleAccept, this, |
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std::placeholders::_1, newSocket)); |
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} |
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|
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void I2PControlService::HandleAccept(const boost::system::error_code& ecode, std::shared_ptr<ssl_socket> socket) |
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{ |
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if (ecode != boost::asio::error::operation_aborted) |
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Accept (); |
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if (!ecode) |
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{ |
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LogPrint (eLogInfo, "New I2PControl request from ", socket->lowest_layer ().remote_endpoint ()); |
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boost::system::error_code ec; |
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socket->handshake (boost::asio::ssl::stream_base::server, ec); |
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if (!ec) |
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{ |
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std::this_thread::sleep_for (std::chrono::milliseconds(5)); |
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ReadRequest (socket); |
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} |
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else |
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LogPrint (eLogError, "I2PControl handshake error: ", ec.message ()); |
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} |
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else |
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LogPrint (eLogError, "I2PControl accept error: ", ecode.message ()); |
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} |
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void I2PControlService::ReadRequest (std::shared_ptr<ssl_socket> socket) |
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{ |
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auto request = std::make_shared<I2PControlBuffer>(); |
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socket->async_read_some ( |
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#if BOOST_VERSION >= 104900 |
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boost::asio::buffer (*request), |
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#else |
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boost::asio::buffer (request->data (), request->size ()), |
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#endif |
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std::bind(&I2PControlService::HandleRequestReceived, this, |
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std::placeholders::_1, std::placeholders::_2, socket, request)); |
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} |
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void I2PControlService::HandleRequestReceived (const boost::system::error_code& ecode, |
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size_t bytes_transferred, std::shared_ptr<ssl_socket> socket, |
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std::shared_ptr<I2PControlBuffer> buf) |
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{ |
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if (ecode) |
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{ |
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LogPrint (eLogError, "I2PControl read error: ", ecode.message ()); |
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} |
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else |
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{ |
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try |
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{ |
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bool isHtml = !memcmp (buf->data (), "POST", 4); |
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std::stringstream ss; |
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ss.write (buf->data (), bytes_transferred); |
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if (isHtml) |
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{ |
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std::string header; |
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size_t contentLength = 0; |
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while (!ss.eof () && header != "\r") |
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{ |
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std::getline(ss, header); |
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auto colon = header.find (':'); |
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if (colon != std::string::npos && header.substr (0, colon) == "Content-Length") |
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contentLength = std::stoi (header.substr (colon + 1)); |
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} |
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if (ss.eof ()) |
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{ |
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LogPrint (eLogError, "Malformed I2PControl request. HTTP header expected"); |
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return; // TODO: |
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} |
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ssize_t rem = contentLength + ss.tellg () - bytes_transferred; // more bytes to read |
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if (rem > 0) |
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{ |
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bytes_transferred = boost::asio::read (*socket, boost::asio::buffer (buf->data (), rem)); |
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ss.write (buf->data (), bytes_transferred); |
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} |
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} |
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#if GCC47_BOOST149 |
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LogPrint (eLogError, "json_read is not supported due bug in boost 1.49 with gcc 4.7"); |
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#else |
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boost::property_tree::ptree pt; |
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boost::property_tree::read_json (ss, pt); |
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std::string method = pt.get<std::string>(I2P_CONTROL_PROPERTY_METHOD); |
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auto it = m_MethodHandlers.find (method); |
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if (it != m_MethodHandlers.end ()) |
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{ |
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std::ostringstream response; |
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response << "{\"id\":" << pt.get<std::string>(I2P_CONTROL_PROPERTY_ID) << ",\"result\":{"; |
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(this->*(it->second))(pt.get_child (I2P_CONTROL_PROPERTY_PARAMS), response); |
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response << "},\"jsonrpc\":\"2.0\"}"; |
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SendResponse (socket, buf, response, isHtml); |
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} |
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else |
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LogPrint (eLogWarning, "Unknown I2PControl method ", method); |
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#endif |
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} |
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catch (std::exception& ex) |
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{ |
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LogPrint (eLogError, "I2PControl handle request: ", ex.what ()); |
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} |
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catch (...) |
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{ |
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LogPrint (eLogError, "I2PControl handle request unknown exception"); |
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} |
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} |
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} |
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void I2PControlService::InsertParam (std::ostringstream& ss, const std::string& name, int value) const |
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{ |
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ss << "\"" << name << "\":" << value; |
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} |
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void I2PControlService::InsertParam (std::ostringstream& ss, const std::string& name, const std::string& value) const |
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{ |
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ss << "\"" << name << "\":"; |
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if (value.length () > 0) |
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ss << "\"" << value << "\""; |
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else |
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ss << "null"; |
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} |
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void I2PControlService::InsertParam (std::ostringstream& ss, const std::string& name, double value) const |
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{ |
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ss << "\"" << name << "\":" << std::fixed << std::setprecision(2) << value; |
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} |
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void I2PControlService::SendResponse (std::shared_ptr<ssl_socket> socket, |
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std::shared_ptr<I2PControlBuffer> buf, std::ostringstream& response, bool isHtml) |
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{ |
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size_t len = response.str ().length (), offset = 0; |
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if (isHtml) |
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{ |
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std::ostringstream header; |
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header << "HTTP/1.1 200 OK\r\n"; |
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header << "Connection: close\r\n"; |
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header << "Content-Length: " << boost::lexical_cast<std::string>(len) << "\r\n"; |
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header << "Content-Type: application/json\r\n"; |
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header << "Date: "; |
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auto facet = new boost::local_time::local_time_facet ("%a, %d %b %Y %H:%M:%S GMT"); |
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header.imbue(std::locale (header.getloc(), facet)); |
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header << boost::posix_time::second_clock::local_time() << "\r\n"; |
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header << "\r\n"; |
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offset = header.str ().size (); |
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memcpy (buf->data (), header.str ().c_str (), offset); |
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} |
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memcpy (buf->data () + offset, response.str ().c_str (), len); |
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boost::asio::async_write (*socket, boost::asio::buffer (buf->data (), offset + len), |
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boost::asio::transfer_all (), |
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std::bind(&I2PControlService::HandleResponseSent, this, |
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std::placeholders::_1, std::placeholders::_2, socket, buf)); |
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} |
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void I2PControlService::HandleResponseSent (const boost::system::error_code& ecode, std::size_t bytes_transferred, |
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std::shared_ptr<ssl_socket> socket, std::shared_ptr<I2PControlBuffer> buf) |
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{ |
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if (ecode) |
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LogPrint (eLogError, "I2PControl write error: ", ecode.message ()); |
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} |
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// handlers |
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void I2PControlService::AuthenticateHandler (const boost::property_tree::ptree& params, std::ostringstream& results) |
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{ |
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int api = params.get<int> (I2P_CONTROL_PARAM_API); |
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auto password = params.get<std::string> (I2P_CONTROL_PARAM_PASSWORD); |
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LogPrint (eLogDebug, "I2PControl Authenticate API=", api, " Password=", password); |
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if (password != m_Password) |
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LogPrint (eLogError, "I2PControl Authenticate Invalid password ", password, " expected ", m_Password); |
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InsertParam (results, I2P_CONTROL_PARAM_API, api); |
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results << ","; |
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std::string token = boost::lexical_cast<std::string>(i2p::util::GetSecondsSinceEpoch ()); |
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m_Tokens.insert (token); |
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InsertParam (results, I2P_CONTROL_PARAM_TOKEN, token); |
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} |
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void I2PControlService::EchoHandler (const boost::property_tree::ptree& params, std::ostringstream& results) |
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{ |
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auto echo = params.get<std::string> (I2P_CONTROL_PARAM_ECHO); |
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LogPrint (eLogDebug, "I2PControl Echo Echo=", echo); |
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InsertParam (results, I2P_CONTROL_PARAM_RESULT, echo); |
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} |
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// I2PControl |
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void I2PControlService::I2PControlHandler (const boost::property_tree::ptree& params, std::ostringstream& results) |
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{ |
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LogPrint (eLogDebug, "I2PControl I2PControl"); |
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for (auto& it: params) |
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{ |
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LogPrint (eLogDebug, it.first); |
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auto it1 = m_I2PControlHandlers.find (it.first); |
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if (it1 != m_I2PControlHandlers.end ()) |
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(this->*(it1->second))(it.second.data ()); |
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else |
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LogPrint (eLogError, "I2PControl NetworkSetting unknown request ", it.first); |
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} |
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} |
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// RouterInfo |
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void I2PControlService::RouterInfoHandler (const boost::property_tree::ptree& params, std::ostringstream& results) |
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{ |
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LogPrint (eLogDebug, "I2PControl RouterInfo"); |
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for (auto it = params.begin (); it != params.end (); it++) |
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{ |
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if (it != params.begin ()) results << ","; |
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LogPrint (eLogDebug, it->first); |
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auto it1 = m_RouterInfoHandlers.find (it->first); |
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if (it1 != m_RouterInfoHandlers.end ()) |
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(this->*(it1->second))(results); |
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else |
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LogPrint (eLogError, "I2PControl RouterInfo unknown request ", it->first); |
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} |
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} |
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void I2PControlService::UptimeHandler (std::ostringstream& results) |
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{ |
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InsertParam (results, I2P_CONTROL_ROUTER_INFO_UPTIME, (int)i2p::context.GetUptime ()*1000); |
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} |
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void I2PControlService::VersionHandler (std::ostringstream& results) |
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{ |
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InsertParam (results, I2P_CONTROL_ROUTER_INFO_VERSION, VERSION); |
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} |
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void I2PControlService::StatusHandler (std::ostringstream& results) |
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{ |
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InsertParam (results, I2P_CONTROL_ROUTER_INFO_STATUS, "???"); // TODO: |
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} |
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void I2PControlService::NetDbKnownPeersHandler (std::ostringstream& results) |
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{ |
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InsertParam (results, I2P_CONTROL_ROUTER_INFO_NETDB_KNOWNPEERS, i2p::data::netdb.GetNumRouters ()); |
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} |
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void I2PControlService::NetDbActivePeersHandler (std::ostringstream& results) |
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{ |
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InsertParam (results, I2P_CONTROL_ROUTER_INFO_NETDB_ACTIVEPEERS, (int)i2p::transport::transports.GetPeers ().size ()); |
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} |
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void I2PControlService::NetStatusHandler (std::ostringstream& results) |
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{ |
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InsertParam (results, I2P_CONTROL_ROUTER_INFO_NET_STATUS, (int)i2p::context.GetStatus ()); |
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} |
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void I2PControlService::TunnelsParticipatingHandler (std::ostringstream& results) |
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{ |
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InsertParam (results, I2P_CONTROL_ROUTER_INFO_TUNNELS_PARTICIPATING, (int)i2p::tunnel::tunnels.GetTransitTunnels ().size ()); |
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} |
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void I2PControlService::InboundBandwidth1S (std::ostringstream& results) |
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{ |
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InsertParam (results, I2P_CONTROL_ROUTER_INFO_BW_IB_1S, (double)i2p::transport::transports.GetInBandwidth ()); |
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} |
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void I2PControlService::OutboundBandwidth1S (std::ostringstream& results) |
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{ |
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InsertParam (results, I2P_CONTROL_ROUTER_INFO_BW_OB_1S, (double)i2p::transport::transports.GetOutBandwidth ()); |
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} |
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// RouterManager |
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void I2PControlService::RouterManagerHandler (const boost::property_tree::ptree& params, std::ostringstream& results) |
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{ |
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LogPrint (eLogDebug, "I2PControl RouterManager"); |
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for (auto it = params.begin (); it != params.end (); it++) |
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{ |
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if (it != params.begin ()) results << ","; |
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LogPrint (eLogDebug, it->first); |
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auto it1 = m_RouterManagerHandlers.find (it->first); |
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if (it1 != m_RouterManagerHandlers.end ()) |
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(this->*(it1->second))(results); |
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else |
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LogPrint (eLogError, "I2PControl RouterManager unknown request ", it->first); |
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} |
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} |
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void I2PControlService::ShutdownHandler (std::ostringstream& results) |
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{ |
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LogPrint (eLogInfo, "Shutdown requested"); |
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InsertParam (results, I2P_CONTROL_ROUTER_MANAGER_SHUTDOWN, ""); |
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m_ShutdownTimer.expires_from_now (boost::posix_time::seconds(1)); // 1 second to make sure response has been sent |
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m_ShutdownTimer.async_wait ( |
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[](const boost::system::error_code& ecode) |
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{ |
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Daemon.running = 0; |
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}); |
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} |
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void I2PControlService::ShutdownGracefulHandler (std::ostringstream& results) |
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{ |
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i2p::context.SetAcceptsTunnels (false); |
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int timeout = i2p::tunnel::tunnels.GetTransitTunnelsExpirationTimeout (); |
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LogPrint (eLogInfo, "Graceful shutdown requested. Will shutdown after ", timeout, " seconds"); |
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InsertParam (results, I2P_CONTROL_ROUTER_MANAGER_SHUTDOWN_GRACEFUL, ""); |
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m_ShutdownTimer.expires_from_now (boost::posix_time::seconds(timeout + 1)); // + 1 second |
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m_ShutdownTimer.async_wait ( |
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[](const boost::system::error_code& ecode) |
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{ |
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Daemon.running = 0; |
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}); |
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} |
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|
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void I2PControlService::ReseedHandler (std::ostringstream& results) |
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{ |
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LogPrint (eLogInfo, "Reseed requested"); |
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InsertParam (results, I2P_CONTROL_ROUTER_MANAGER_SHUTDOWN, ""); |
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i2p::data::netdb.Reseed (); |
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} |
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|
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// network setting |
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void I2PControlService::NetworkSettingHandler (const boost::property_tree::ptree& params, std::ostringstream& results) |
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{ |
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LogPrint (eLogDebug, "I2PControl NetworkSetting"); |
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for (auto it = params.begin (); it != params.end (); it++) |
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{ |
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if (it != params.begin ()) results << ","; |
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LogPrint (eLogDebug, it->first); |
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auto it1 = m_NetworkSettingHandlers.find (it->first); |
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if (it1 != m_NetworkSettingHandlers.end ()) |
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(this->*(it1->second))(it->second.data (), results); |
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else |
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LogPrint (eLogError, "I2PControl NetworkSetting unknown request ", it->first); |
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} |
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} |
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|
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// certificate |
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void I2PControlService::CreateCertificate () |
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{ |
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EVP_PKEY * pkey = EVP_PKEY_new (); |
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RSA * rsa = RSA_new (); |
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RSA_generate_key_ex (rsa, 4096, i2p::crypto::rsae, NULL); |
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if (rsa) |
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{ |
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EVP_PKEY_assign_RSA (pkey, rsa); |
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X509 * x509 = X509_new (); |
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ASN1_INTEGER_set (X509_get_serialNumber (x509), 1); |
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X509_gmtime_adj (X509_get_notBefore (x509), 0); |
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X509_gmtime_adj (X509_get_notAfter (x509), I2P_CONTROL_CERTIFICATE_VALIDITY*24*60*60); // expiration |
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X509_set_pubkey (x509, pkey); // public key |
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X509_NAME * name = X509_get_subject_name (x509); |
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X509_NAME_add_entry_by_txt (name, "C", MBSTRING_ASC, (unsigned char *)"RU", -1, -1, 0); // country (Russia by default) |
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X509_NAME_add_entry_by_txt (name, "O", MBSTRING_ASC, (unsigned char *)I2P_CONTROL_CERTIFICATE_ORGANIZATION, -1, -1, 0); // organization |
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X509_NAME_add_entry_by_txt (name, "CN", MBSTRING_ASC, (unsigned char *)I2P_CONTROL_CERTIFICATE_COMMON_NAME, -1, -1, 0); // common name |
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X509_set_issuer_name (x509, name); // set issuer to ourselves |
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X509_sign (x509, pkey, EVP_sha1 ()); // sign |
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// save key and certificate |
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// keys |
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auto filename = GetPath () / I2P_CONTROL_KEY_FILE; |
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FILE * f= fopen (filename.string ().c_str (), "wb"); |
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if (f) |
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{ |
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PEM_write_PrivateKey (f, pkey, NULL, NULL, 0, NULL, NULL); |
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fclose (f); |
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} |
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else |
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LogPrint (eLogError, "Can't open file ", filename); |
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// certificate |
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filename = GetPath () / I2P_CONTROL_CERT_FILE; |
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f= fopen (filename.string ().c_str (), "wb"); |
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if (f) |
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{ |
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PEM_write_X509 (f, x509); |
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fclose (f); |
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} |
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else |
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LogPrint (eLogError, "Can't open file ", filename); |
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|
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X509_free (x509); |
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} |
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else |
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LogPrint (eLogError, "Couldn't create RSA key for certificate"); |
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EVP_PKEY_free (pkey); |
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} |
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|
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} |
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}
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