I2P: End-to-End encrypted and anonymous Internet https://i2pd.website/
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// There is bug in boost 1.49 with gcc 4.7 coming with Debian Wheezy
#define GCC47_BOOST149 ((BOOST_VERSION == 104900) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 7))
#include "I2PControl.h"
#include <sstream>
#include <boost/lexical_cast.hpp>
#include <boost/date_time/local_time/local_time.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/property_tree/ptree.hpp>
#if !GCC47_BOOST149
#include <boost/property_tree/json_parser.hpp>
#endif
#include "Log.h"
#include "NetDb.h"
#include "RouterContext.h"
#include "Daemon.h"
#include "Tunnel.h"
#include "Timestamp.h"
#include "Transports.h"
namespace i2p
{
namespace client
{
I2PControlService::I2PControlService (int port):
m_Password (I2P_CONTROL_DEFAULT_PASSWORD), m_IsRunning (false), m_Thread (nullptr),
m_Acceptor (m_Service, boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(), port)),
m_ShutdownTimer (m_Service)
{
m_MethodHandlers[I2P_CONTROL_METHOD_AUTHENTICATE] = &I2PControlService::AuthenticateHandler;
m_MethodHandlers[I2P_CONTROL_METHOD_ECHO] = &I2PControlService::EchoHandler;
m_MethodHandlers[I2P_CONTROL_METHOD_I2PCONTROL] = &I2PControlService::I2PControlHandler;
m_MethodHandlers[I2P_CONTROL_METHOD_ROUTER_INFO] = &I2PControlService::RouterInfoHandler;
m_MethodHandlers[I2P_CONTROL_METHOD_ROUTER_MANAGER] = &I2PControlService::RouterManagerHandler;
m_MethodHandlers[I2P_CONTROL_METHOD_NETWORK_SETTING] = &I2PControlService::NetworkSettingHandler;
// RouterInfo
m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_NETDB_KNOWNPEERS] = &I2PControlService::NetDbKnownPeersHandler;
m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_NETDB_ACTIVEPEERS] = &I2PControlService::NetDbActivePeersHandler;
m_RouterInfoHandlers[I2P_CONTROL_ROUTER_INFO_TUNNELS_PARTICIPATING] = &I2PControlService::TunnelsParticipatingHandler;
// RouterManager
m_RouterManagerHandlers[I2P_CONTROL_ROUTER_MANAGER_SHUTDOWN] = &I2PControlService::ShutdownHandler;
m_RouterManagerHandlers[I2P_CONTROL_ROUTER_MANAGER_SHUTDOWN_GRACEFUL] = &I2PControlService::ShutdownGracefulHandler;
m_RouterManagerHandlers[I2P_CONTROL_ROUTER_MANAGER_RESEED] = &I2PControlService::ReseedHandler;
}
I2PControlService::~I2PControlService ()
{
Stop ();
}
void I2PControlService::Start ()
{
if (!m_IsRunning)
{
Accept ();
m_IsRunning = true;
m_Thread = new std::thread (std::bind (&I2PControlService::Run, this));
}
}
void I2PControlService::Stop ()
{
if (m_IsRunning)
{
m_IsRunning = false;
m_Acceptor.cancel ();
m_Service.stop ();
if (m_Thread)
{
m_Thread->join ();
delete m_Thread;
m_Thread = nullptr;
}
}
}
void I2PControlService::Run ()
{
while (m_IsRunning)
{
try
{
m_Service.run ();
}
catch (std::exception& ex)
{
LogPrint (eLogError, "I2PControl: ", ex.what ());
}
}
}
void I2PControlService::Accept ()
{
auto newSocket = std::make_shared<boost::asio::ip::tcp::socket> (m_Service);
m_Acceptor.async_accept (*newSocket, std::bind (&I2PControlService::HandleAccept, this,
std::placeholders::_1, newSocket));
}
void I2PControlService::HandleAccept(const boost::system::error_code& ecode, std::shared_ptr<boost::asio::ip::tcp::socket> socket)
{
if (ecode != boost::asio::error::operation_aborted)
Accept ();
if (!ecode)
{
LogPrint (eLogInfo, "New I2PControl request from ", socket->remote_endpoint ());
ReadRequest (socket);
}
else
LogPrint (eLogError, "I2PControl accept error: ", ecode.message ());
}
void I2PControlService::ReadRequest (std::shared_ptr<boost::asio::ip::tcp::socket> socket)
{
auto request = std::make_shared<I2PControlBuffer>();
socket->async_read_some (
#if BOOST_VERSION >= 104900
boost::asio::buffer (*request),
#else
boost::asio::buffer (request->data (), request->size ()),
#endif
std::bind(&I2PControlService::HandleRequestReceived, this,
std::placeholders::_1, std::placeholders::_2, socket, request));
}
void I2PControlService::HandleRequestReceived (const boost::system::error_code& ecode,
size_t bytes_transferred, std::shared_ptr<boost::asio::ip::tcp::socket> socket,
std::shared_ptr<I2PControlBuffer> buf)
{
if (ecode)
{
LogPrint (eLogError, "I2PControl read error: ", ecode.message ());
}
else
{
try
{
bool isHtml = !memcmp (buf->data (), "POST", 4);
std::stringstream ss;
ss.write (buf->data (), bytes_transferred);
if (isHtml)
{
std::string header;
while (!ss.eof () && header != "\r")
std::getline(ss, header);
if (ss.eof ())
{
LogPrint (eLogError, "Malformed I2PControl request. HTTP header expected");
return; // TODO:
}
}
#if GCC47_BOOST149
LogPrint (eLogError, "json_read is not supported due bug in boost 1.49 with gcc 4.7");
#else
boost::property_tree::ptree pt;
boost::property_tree::read_json (ss, pt);
std::string method = pt.get<std::string>(I2P_CONTROL_PROPERTY_METHOD);
auto it = m_MethodHandlers.find (method);
if (it != m_MethodHandlers.end ())
{
std::map<std::string, std::string> params;
for (auto& v: pt.get_child (I2P_CONTROL_PROPERTY_PARAMS))
{
LogPrint (eLogInfo, v.first);
if (!v.first.empty())
params[v.first] = v.second.data ();
}
std::map<std::string, std::string> results;
(this->*(it->second))(params, results);
SendResponse (socket, buf, pt.get<std::string>(I2P_CONTROL_PROPERTY_ID), results, isHtml);
}
else
LogPrint (eLogWarning, "Unknown I2PControl method ", method);
#endif
}
catch (std::exception& ex)
{
LogPrint (eLogError, "I2PControl handle request: ", ex.what ());
}
catch (...)
{
LogPrint (eLogError, "I2PControl handle request unknown exception");
}
}
}
void I2PControlService::SendResponse (std::shared_ptr<boost::asio::ip::tcp::socket> socket,
std::shared_ptr<I2PControlBuffer> buf, const std::string& id,
const std::map<std::string, std::string>& results, bool isHtml)
{
boost::property_tree::ptree ptr;
for (auto& result: results)
ptr.put (boost::property_tree::ptree::path_type (result.first, '/'), result.second);
boost::property_tree::ptree pt;
pt.put (I2P_CONTROL_PROPERTY_ID, id);
pt.put_child (I2P_CONTROL_PROPERTY_RESULT, ptr);
pt.put ("jsonrpc", "2.0");
std::ostringstream ss;
#if GCC47_BOOST149
LogPrint (eLogError, "json_write is not supported due bug in boost 1.49 with gcc 4.7");
#else
boost::property_tree::write_json (ss, pt, false);
#endif
size_t len = ss.str ().length (), offset = 0;
if (isHtml)
{
std::ostringstream header;
header << "HTTP/1.1 200 OK\r\n";
header << "Connection: close\r\n";
header << "Content-Length: " << boost::lexical_cast<std::string>(len) << "\r\n";
header << "Content-Type: application/json\r\n";
header << "Date: ";
auto facet = new boost::local_time::local_time_facet ("%a, %d %b %Y %H:%M:%S GMT");
header.imbue(std::locale (header.getloc(), facet));
header << boost::posix_time::second_clock::local_time() << "\r\n";
header << "\r\n";
offset = header.str ().size ();
memcpy (buf->data (), header.str ().c_str (), offset);
}
memcpy (buf->data () + offset, ss.str ().c_str (), len);
boost::asio::async_write (*socket, boost::asio::buffer (buf->data (), len),
boost::asio::transfer_all (),
std::bind(&I2PControlService::HandleResponseSent, this,
std::placeholders::_1, std::placeholders::_2, socket, buf));
}
void I2PControlService::HandleResponseSent (const boost::system::error_code& ecode, std::size_t bytes_transferred,
std::shared_ptr<boost::asio::ip::tcp::socket> socket, std::shared_ptr<I2PControlBuffer> buf)
{
if (ecode)
LogPrint (eLogError, "I2PControl write error: ", ecode.message ());
socket->close ();
}
// handlers
void I2PControlService::AuthenticateHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results)
{
const std::string& api = params.at (I2P_CONTROL_PARAM_API);
const std::string& password = params.at (I2P_CONTROL_PARAM_PASSWORD);
LogPrint (eLogDebug, "I2PControl Authenticate API=", api, " Password=", password);
if (password != m_Password)
LogPrint (eLogError, "I2PControl Authenticate Invalid password ", password, " expected ", m_Password);
results[I2P_CONTROL_PARAM_API] = api;
results[I2P_CONTROL_PARAM_TOKEN] = boost::lexical_cast<std::string>(i2p::util::GetSecondsSinceEpoch ());
}
void I2PControlService::EchoHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results)
{
const std::string& echo = params.at (I2P_CONTROL_PARAM_ECHO);
LogPrint (eLogDebug, "I2PControl Echo Echo=", echo);
results[I2P_CONTROL_PARAM_RESULT] = echo;
}
// I2PControl
void I2PControlService::I2PControlHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results)
{
LogPrint (eLogDebug, "I2PControl I2PControl");
for (auto& it: params)
{
LogPrint (eLogDebug, it.first);
auto it1 = m_I2PControlHandlers.find (it.first);
if (it1 != m_I2PControlHandlers.end ())
(this->*(it1->second))(it.second);
else
LogPrint (eLogError, "I2PControl NetworkSetting unknown request ", it.first);
}
}
// RouterInfo
void I2PControlService::RouterInfoHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results)
{
LogPrint (eLogDebug, "I2PControl RouterInfo");
for (auto& it: params)
{
LogPrint (eLogDebug, it.first);
auto it1 = m_RouterInfoHandlers.find (it.first);
if (it1 != m_RouterInfoHandlers.end ())
(this->*(it1->second))(results);
else
LogPrint (eLogError, "I2PControl RouterInfo unknown request ", it.first);
}
}
void I2PControlService::NetDbKnownPeersHandler (std::map<std::string, std::string>& results)
{
results[I2P_CONTROL_ROUTER_INFO_NETDB_KNOWNPEERS] = boost::lexical_cast<std::string>(i2p::data::netdb.GetNumRouters ());
}
void I2PControlService::NetDbActivePeersHandler (std::map<std::string, std::string>& results)
{
results[I2P_CONTROL_ROUTER_INFO_NETDB_ACTIVEPEERS] = boost::lexical_cast<std::string>(i2p::transport::transports.GetPeers ().size ());
}
void I2PControlService::TunnelsParticipatingHandler (std::map<std::string, std::string>& results)
{
results[I2P_CONTROL_ROUTER_INFO_TUNNELS_PARTICIPATING] = boost::lexical_cast<std::string>(i2p::tunnel::tunnels.GetTransitTunnels ().size ());;
}
// RouterManager
void I2PControlService::RouterManagerHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results)
{
LogPrint (eLogDebug, "I2PControl RouterManager");
for (auto& it: params)
{
LogPrint (eLogDebug, 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::map<std::string, std::string>& results)
{
LogPrint (eLogInfo, "Shutdown requested");
results[I2P_CONTROL_ROUTER_MANAGER_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::map<std::string, std::string>& results)
{
i2p::context.SetAcceptsTunnels (false);
int timeout = i2p::tunnel::tunnels.GetTransitTunnelsExpirationTimeout ();
LogPrint (eLogInfo, "Graceful shutdown requested. Will shutdown after ", timeout, " seconds");
results[I2P_CONTROL_ROUTER_MANAGER_SHUTDOWN_GRACEFUL] = "";
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::map<std::string, std::string>& results)
{
LogPrint (eLogInfo, "Reseed requested");
results[I2P_CONTROL_ROUTER_MANAGER_SHUTDOWN] = "";
i2p::data::netdb.Reseed ();
}
// network setting
void I2PControlService::NetworkSettingHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results)
{
LogPrint (eLogDebug, "I2PControl NetworkSetting");
for (auto& it: params)
{
LogPrint (eLogDebug, it.first);
auto it1 = m_NetworkSettingHandlers.find (it.first);
if (it1 != m_NetworkSettingHandlers.end ())
(this->*(it1->second))(it.second, results);
else
LogPrint (eLogError, "I2PControl NetworkSetting unknown request ", it.first);
}
}
}
}