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564 lines
20 KiB
C++
564 lines
20 KiB
C++
#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/date_time/posix_time/posix_time.hpp>
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#include <boost/property_tree/ini_parser.hpp>
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// 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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#if !GCC47_BOOST149
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#include <boost/property_tree/json_parser.hpp>
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#endif
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#include "Crypto.h"
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#include "FS.h"
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#include "Log.h"
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#include "HTTP.h"
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#include "Config.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 "util.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 (const std::string& address, int port):
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m_IsRunning (false), m_Thread (nullptr),
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m_Acceptor (m_Service, boost::asio::ip::tcp::endpoint(boost::asio::ip::address::from_string(address), 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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i2p::config::GetOption("i2pcontrol.password", m_Password);
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// certificate / keys
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std::string i2pcp_crt; i2p::config::GetOption("i2pcontrol.cert", i2pcp_crt);
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std::string i2pcp_key; i2p::config::GetOption("i2pcontrol.key", i2pcp_key);
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if (i2pcp_crt.at(0) != '/')
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i2pcp_crt = i2p::fs::DataDirPath(i2pcp_crt);
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if (i2pcp_key.at(0) != '/')
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i2pcp_key = i2p::fs::DataDirPath(i2pcp_key);
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if (!i2p::fs::Exists (i2pcp_crt) || !i2p::fs::Exists (i2pcp_key)) {
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LogPrint (eLogInfo, "I2PControl: creating new certificate for control connection");
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CreateCertificate (i2pcp_crt.c_str(), i2pcp_key.c_str());
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} else {
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LogPrint(eLogDebug, "I2PControl: using cert from ", i2pcp_crt);
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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 (i2pcp_crt, boost::asio::ssl::context::pem);
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m_SSLContext.use_private_key_file (i2pcp_key, boost::asio::ssl::context::pem);
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// handlers
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m_MethodHandlers["Authenticate"] = &I2PControlService::AuthenticateHandler;
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m_MethodHandlers["Echo"] = &I2PControlService::EchoHandler;
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m_MethodHandlers["I2PControl"] = &I2PControlService::I2PControlHandler;
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m_MethodHandlers["RouterInfo"] = &I2PControlService::RouterInfoHandler;
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m_MethodHandlers["RouterManager"] = &I2PControlService::RouterManagerHandler;
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m_MethodHandlers["NetworkSetting"] = &I2PControlService::NetworkSettingHandler;
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// I2PControl
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m_I2PControlHandlers["i2pcontrol.password"] = &I2PControlService::PasswordHandler;
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// RouterInfo
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m_RouterInfoHandlers["i2p.router.uptime"] = &I2PControlService::UptimeHandler;
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m_RouterInfoHandlers["i2p.router.version"] = &I2PControlService::VersionHandler;
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m_RouterInfoHandlers["i2p.router.status"] = &I2PControlService::StatusHandler;
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m_RouterInfoHandlers["i2p.router.netdb.knownpeers"] = &I2PControlService::NetDbKnownPeersHandler;
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m_RouterInfoHandlers["i2p.router.netdb.activepeers"] = &I2PControlService::NetDbActivePeersHandler;
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m_RouterInfoHandlers["i2p.router.net.bw.inbound.1s"] = &I2PControlService::InboundBandwidth1S;
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m_RouterInfoHandlers["i2p.router.net.bw.outbound.1s"] = &I2PControlService::OutboundBandwidth1S;
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m_RouterInfoHandlers["i2p.router.net.status"] = &I2PControlService::NetStatusHandler;
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m_RouterInfoHandlers["i2p.router.net.tunnels.participating"] = &I2PControlService::TunnelsParticipatingHandler;
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m_RouterInfoHandlers["i2p.router.net.total.received.bytes"] = &I2PControlService::NetTotalReceivedBytes;
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m_RouterInfoHandlers["i2p.router.net.total.sent.bytes"] = &I2PControlService::NetTotalSentBytes;
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// RouterManager
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m_RouterManagerHandlers["Reseed"] = &I2PControlService::ReseedHandler;
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m_RouterManagerHandlers["Shutdown"] = &I2PControlService::ShutdownHandler;
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m_RouterManagerHandlers["ShutdownGraceful"] = &I2PControlService::ShutdownGracefulHandler;
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// NetworkSetting
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m_NetworkSettingHandlers["i2p.router.net.bw.in"] = &I2PControlService::InboundBandwidthLimit;
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m_NetworkSettingHandlers["i2p.router.net.bw.out"] = &I2PControlService::OutboundBandwidthLimit;
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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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m_Service.run ();
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} catch (std::exception& ex) {
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LogPrint (eLogError, "I2PControl: runtime exception: ", 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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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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LogPrint (eLogError, "I2PControl: accept error: ", ecode.message ());
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return;
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}
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LogPrint (eLogDebug, "I2PControl: new request from ", socket->lowest_layer ().remote_endpoint ());
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Handshake (socket);
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}
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void I2PControlService::Handshake (std::shared_ptr<ssl_socket> socket)
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{
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socket->async_handshake(boost::asio::ssl::stream_base::server,
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std::bind( &I2PControlService::HandleHandshake, this, std::placeholders::_1, socket));
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}
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void I2PControlService::HandleHandshake (const boost::system::error_code& ecode, std::shared_ptr<ssl_socket> socket)
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{
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if (ecode) {
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LogPrint (eLogError, "I2PControl: handshake error: ", ecode.message ());
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return;
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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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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 defined(BOOST_ASIO_HAS_STD_ARRAY)
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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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LogPrint (eLogError, "I2PControl: read error: ", ecode.message ());
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return;
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}
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/* try to parse received data */
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std::stringstream json;
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std::string response;
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bool isHTTP = false;
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if (memcmp (buf->data (), "POST", 4) == 0) {
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long int remains = 0;
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isHTTP = true;
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i2p::http::HTTPReq req;
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std::size_t len = req.parse(buf->data(), bytes_transferred);
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if (len <= 0) {
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LogPrint(eLogError, "I2PControl: incomplete/malformed POST request");
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return;
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}
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/* append to json chunk of data from 1st request */
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json.write(buf->data() + len, bytes_transferred - len);
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remains = req.content_length() - len;
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/* if request has Content-Length header, fetch rest of data and store to json buffer */
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while (remains > 0) {
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len = ((long int) buf->size() < remains) ? buf->size() : remains;
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bytes_transferred = boost::asio::read (*socket, boost::asio::buffer (buf->data (), len));
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json.write(buf->data(), bytes_transferred);
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remains -= bytes_transferred;
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}
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} else {
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json.write(buf->data(), bytes_transferred);
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}
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LogPrint(eLogDebug, "I2PControl: json from request: ", json.str());
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#if GCC47_BOOST149
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LogPrint (eLogError, "I2PControl: json_read is not supported due bug in boost 1.49 with gcc 4.7");
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BuildErrorResponse(response, 32603, "JSON requests is not supported with this version of boost");
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#else
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/* now try to parse json itself */
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try {
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boost::property_tree::ptree pt;
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boost::property_tree::read_json (json, pt);
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std::string id = pt.get<std::string>("id");
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std::string method = pt.get<std::string>("method");
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auto it = m_MethodHandlers.find (method);
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if (it != m_MethodHandlers.end ()) {
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std::ostringstream ss;
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ss << "{\"id\":" << id << ",\"result\":{";
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(this->*(it->second))(pt.get_child ("params"), ss);
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ss << "},\"jsonrpc\":\"2.0\"}";
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response = ss.str();
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} else {
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LogPrint (eLogWarning, "I2PControl: unknown method ", method);
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BuildErrorResponse(response, 32601, "Method not found");
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}
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} catch (std::exception& ex) {
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LogPrint (eLogError, "I2PControl: exception when handle request: ", ex.what ());
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BuildErrorResponse(response, 32603, ex.what());
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} catch (...) {
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LogPrint (eLogError, "I2PControl: handle request unknown exception");
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}
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#endif
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SendResponse (socket, buf, response, isHTTP);
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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::BuildErrorResponse (std::string & content, int code, const char *message) {
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std::stringstream ss;
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ss << "{\"id\":null,\"error\":";
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ss << "{\"code\":" << -code << ",\"message\":\"" << message << "\"},";
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ss << "\"jsonrpc\":\"2.0\"}";
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content = ss.str();
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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::string& content, bool isHTTP)
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{
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if (isHTTP) {
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i2p::http::HTTPRes res;
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res.code = 200;
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res.add_header("Content-Type", "application/json");
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res.add_header("Connection", "close");
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res.body = content;
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std::string tmp = res.to_string();
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content = tmp;
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}
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std::copy(content.begin(), content.end(), buf->begin());
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boost::asio::async_write (*socket, boost::asio::buffer (buf->data (), content.length()),
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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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}
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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> ("API");
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auto password = params.get<std::string> ("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);
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return;
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}
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InsertParam (results, "API", api);
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results << ",";
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std::string token = std::to_string(i2p::util::GetSecondsSinceEpoch ());
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m_Tokens.insert (token);
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InsertParam (results, "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> ("Echo");
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LogPrint (eLogDebug, "I2PControl Echo Echo=", echo);
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InsertParam (results, "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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for (auto& it: params)
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{
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LogPrint (eLogDebug, "I2PControl: I2PControl request: ", 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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{
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(this->*(it1->second))(it.second.data ());
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InsertParam (results, it.first, "");
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}
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else
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LogPrint (eLogError, "I2PControl: I2PControl unknown request: ", it.first);
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}
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}
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void I2PControlService::PasswordHandler (const std::string& value)
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{
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LogPrint (eLogWarning, "I2PControl: new password=", value, ", to make it persistent you should update your config!");
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m_Password = value;
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m_Tokens.clear ();
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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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for (auto it = params.begin (); it != params.end (); ++it)
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{
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LogPrint (eLogDebug, "I2PControl: RouterInfo request: ", 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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{
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if (it != params.begin ()) results << ",";
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(this->*(it1->second))(results);
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}
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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.router.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.router.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.router.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.router.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.router.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.router.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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int transit = i2p::tunnel::tunnels.GetTransitTunnels ().size ();
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InsertParam (results, "i2p.router.net.tunnels.participating", transit);
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}
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void I2PControlService::InboundBandwidth1S (std::ostringstream& results)
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{
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double bw = i2p::transport::transports.GetInBandwidth ();
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InsertParam (results, "i2p.router.net.bw.inbound.1s", bw);
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}
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void I2PControlService::OutboundBandwidth1S (std::ostringstream& results)
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{
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double bw = i2p::transport::transports.GetOutBandwidth ();
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InsertParam (results, "i2p.router.net.bw.outbound.1s", bw);
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}
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void I2PControlService::NetTotalReceivedBytes (std::ostringstream& results)
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{
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InsertParam (results, "i2p.router.net.total.received.bytes", (double)i2p::transport::transports.GetTotalReceivedBytes ());
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}
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void I2PControlService::NetTotalSentBytes (std::ostringstream& results)
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{
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InsertParam (results, "i2p.router.net.total.sent.bytes", (double)i2p::transport::transports.GetTotalSentBytes ());
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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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for (auto it = params.begin (); it != params.end (); ++it)
|
|
{
|
|
if (it != params.begin ()) results << ",";
|
|
LogPrint (eLogDebug, "I2PControl: RouterManager request: ", it->first);
|
|
auto it1 = m_RouterManagerHandlers.find (it->first);
|
|
if (it1 != m_RouterManagerHandlers.end ()) {
|
|
(this->*(it1->second))(results);
|
|
} else
|
|
LogPrint (eLogError, "I2PControl: RouterManager unknown request: ", it->first);
|
|
}
|
|
}
|
|
|
|
|
|
void I2PControlService::ShutdownHandler (std::ostringstream& results)
|
|
{
|
|
LogPrint (eLogInfo, "I2PControl: Shutdown requested");
|
|
InsertParam (results, "Shutdown", "");
|
|
m_ShutdownTimer.expires_from_now (boost::posix_time::seconds(1)); // 1 second to make sure response has been sent
|
|
m_ShutdownTimer.async_wait (
|
|
[](const boost::system::error_code& ecode)
|
|
{
|
|
Daemon.running = 0;
|
|
});
|
|
}
|
|
|
|
void I2PControlService::ShutdownGracefulHandler (std::ostringstream& results)
|
|
{
|
|
i2p::context.SetAcceptsTunnels (false);
|
|
int timeout = i2p::tunnel::tunnels.GetTransitTunnelsExpirationTimeout ();
|
|
LogPrint (eLogInfo, "I2PControl: Graceful shutdown requested, ", timeout, " seconds remains");
|
|
InsertParam (results, "ShutdownGraceful", "");
|
|
m_ShutdownTimer.expires_from_now (boost::posix_time::seconds(timeout + 1)); // + 1 second
|
|
m_ShutdownTimer.async_wait (
|
|
[](const boost::system::error_code& ecode)
|
|
{
|
|
Daemon.running = 0;
|
|
});
|
|
}
|
|
|
|
void I2PControlService::ReseedHandler (std::ostringstream& results)
|
|
{
|
|
LogPrint (eLogInfo, "I2PControl: Reseed requested");
|
|
InsertParam (results, "Reseed", "");
|
|
i2p::data::netdb.Reseed ();
|
|
}
|
|
|
|
// network setting
|
|
void I2PControlService::NetworkSettingHandler (const boost::property_tree::ptree& params, std::ostringstream& results)
|
|
{
|
|
for (auto it = params.begin (); it != params.end (); ++it)
|
|
{
|
|
if (it != params.begin ()) results << ",";
|
|
LogPrint (eLogDebug, "I2PControl: NetworkSetting request: ", it->first);
|
|
auto it1 = m_NetworkSettingHandlers.find (it->first);
|
|
if (it1 != m_NetworkSettingHandlers.end ()) {
|
|
(this->*(it1->second))(it->second.data (), results);
|
|
} else
|
|
LogPrint (eLogError, "I2PControl: NetworkSetting unknown request: ", it->first);
|
|
}
|
|
}
|
|
|
|
void I2PControlService::InboundBandwidthLimit (const std::string& value, std::ostringstream& results)
|
|
{
|
|
if (value != "null")
|
|
i2p::context.SetBandwidth (std::atoi(value.c_str()));
|
|
int bw = i2p::context.GetBandwidthLimit();
|
|
InsertParam (results, "i2p.router.net.bw.in", bw);
|
|
}
|
|
|
|
void I2PControlService::OutboundBandwidthLimit (const std::string& value, std::ostringstream& results)
|
|
{
|
|
if (value != "null")
|
|
i2p::context.SetBandwidth (std::atoi(value.c_str()));
|
|
int bw = i2p::context.GetBandwidthLimit();
|
|
InsertParam (results, "i2p.router.net.bw.out", bw);
|
|
}
|
|
|
|
// certificate
|
|
void I2PControlService::CreateCertificate (const char *crt_path, const char *key_path)
|
|
{
|
|
FILE *f = NULL;
|
|
EVP_PKEY * pkey = EVP_PKEY_new ();
|
|
RSA * rsa = RSA_new ();
|
|
BIGNUM * e = BN_dup (i2p::crypto::GetRSAE ());
|
|
RSA_generate_key_ex (rsa, 4096, e, NULL);
|
|
BN_free (e);
|
|
if (rsa)
|
|
{
|
|
EVP_PKEY_assign_RSA (pkey, rsa);
|
|
X509 * x509 = X509_new ();
|
|
ASN1_INTEGER_set (X509_get_serialNumber (x509), 1);
|
|
X509_gmtime_adj (X509_get_notBefore (x509), 0);
|
|
X509_gmtime_adj (X509_get_notAfter (x509), I2P_CONTROL_CERTIFICATE_VALIDITY*24*60*60); // expiration
|
|
X509_set_pubkey (x509, pkey); // public key
|
|
X509_NAME * name = X509_get_subject_name (x509);
|
|
X509_NAME_add_entry_by_txt (name, "C", MBSTRING_ASC, (unsigned char *)"RU", -1, -1, 0); // country (Russia by default)
|
|
X509_NAME_add_entry_by_txt (name, "O", MBSTRING_ASC, (unsigned char *)I2P_CONTROL_CERTIFICATE_ORGANIZATION, -1, -1, 0); // organization
|
|
X509_NAME_add_entry_by_txt (name, "CN", MBSTRING_ASC, (unsigned char *)I2P_CONTROL_CERTIFICATE_COMMON_NAME, -1, -1, 0); // common name
|
|
X509_set_issuer_name (x509, name); // set issuer to ourselves
|
|
X509_sign (x509, pkey, EVP_sha1 ()); // sign
|
|
|
|
// save cert
|
|
if ((f = fopen (crt_path, "wb")) != NULL) {
|
|
LogPrint (eLogInfo, "I2PControl: saving new cert to ", crt_path);
|
|
PEM_write_X509 (f, x509);
|
|
fclose (f);
|
|
} else {
|
|
LogPrint (eLogError, "I2PControl: can't write cert: ", strerror(errno));
|
|
}
|
|
|
|
// save key
|
|
if ((f = fopen (key_path, "wb")) != NULL) {
|
|
LogPrint (eLogInfo, "I2PControl: saving cert key to ", key_path);
|
|
PEM_write_PrivateKey (f, pkey, NULL, NULL, 0, NULL, NULL);
|
|
fclose (f);
|
|
} else {
|
|
LogPrint (eLogError, "I2PControl: can't write key: ", strerror(errno));
|
|
}
|
|
|
|
X509_free (x509);
|
|
} else {
|
|
LogPrint (eLogError, "I2PControl: can't create RSA key for certificate");
|
|
}
|
|
EVP_PKEY_free (pkey);
|
|
}
|
|
}
|
|
}
|