I2P: End-to-End encrypted and anonymous Internet https://i2pd.website/
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#include <fstream>
#include <iostream>
#include <boost/program_options/parsers.hpp>
#include <boost/program_options/variables_map.hpp>
#include "util.h"
#include "Log.h"
#include "Identity.h"
#include "ClientContext.h"
namespace i2p
{
namespace client
{
ClientContext context;
ClientContext::ClientContext (): m_SharedLocalDestination (nullptr),
m_HttpProxy (nullptr), m_SocksProxy (nullptr), m_SamBridge (nullptr),
m_BOBCommandChannel (nullptr), m_I2PControlService (nullptr)
{
}
ClientContext::~ClientContext ()
{
delete m_HttpProxy;
delete m_SocksProxy;
delete m_SamBridge;
delete m_BOBCommandChannel;
delete m_I2PControlService;
}
void ClientContext::Start ()
{
if (!m_SharedLocalDestination)
{
m_SharedLocalDestination = CreateNewLocalDestination (); // non-public, DSA
m_Destinations[m_SharedLocalDestination->GetIdentity ().GetIdentHash ()] = m_SharedLocalDestination;
m_SharedLocalDestination->Start ();
}
// proxies
m_HttpProxy = new i2p::proxy::HTTPProxy(i2p::util::config::GetArg("-httpproxyport", 4446));
m_HttpProxy->Start();
LogPrint("HTTP Proxy started");
m_SocksProxy = new i2p::proxy::SOCKSProxy(i2p::util::config::GetArg("-socksproxyport", 4447));
m_SocksProxy->Start();
LogPrint("SOCKS Proxy Started");
// I2P tunnels
std::string ircDestination = i2p::util::config::GetArg("-ircdest", "");
if (ircDestination.length () > 0) // ircdest is presented
{
std::shared_ptr<ClientDestination> localDestination = nullptr;
std::string ircKeys = i2p::util::config::GetArg("-irckeys", "");
if (ircKeys.length () > 0)
localDestination = LoadLocalDestination (ircKeys, false);
auto ircPort = i2p::util::config::GetArg("-ircport", 6668);
auto ircTunnel = new I2PClientTunnel (ircDestination, ircPort, localDestination);
ircTunnel->Start ();
m_ClientTunnels.insert (std::make_pair(ircPort, std::unique_ptr<I2PClientTunnel>(ircTunnel)));
LogPrint("IRC tunnel started");
}
std::string eepKeys = i2p::util::config::GetArg("-eepkeys", "");
if (eepKeys.length () > 0) // eepkeys file is presented
{
auto localDestination = LoadLocalDestination (eepKeys, true);
auto serverTunnel = new I2PServerTunnel (i2p::util::config::GetArg("-eephost", "127.0.0.1"),
i2p::util::config::GetArg("-eepport", 80), localDestination);
serverTunnel->Start ();
m_ServerTunnels.insert (std::make_pair(localDestination->GetIdentHash (), std::unique_ptr<I2PServerTunnel>(serverTunnel)));
LogPrint("Server tunnel started");
}
ReadTunnels ();
// SAM
int samPort = i2p::util::config::GetArg("-samport", 0);
if (samPort)
{
m_SamBridge = new SAMBridge (samPort);
m_SamBridge->Start ();
LogPrint("SAM bridge started");
}
// BOB
int bobPort = i2p::util::config::GetArg("-bobport", 0);
if (bobPort)
{
m_BOBCommandChannel = new BOBCommandChannel (bobPort);
m_BOBCommandChannel->Start ();
LogPrint("BOB command channel started");
}
// I2P Control
int i2pcontrolPort = i2p::util::config::GetArg("-i2pcontrolport", 0);
if (i2pcontrolPort)
{
m_I2PControlService = new I2PControlService (i2pcontrolPort);
m_I2PControlService->Start ();
LogPrint("I2PControl started");
}
m_AddressBook.StartSubscriptions ();
}
void ClientContext::Stop ()
{
m_AddressBook.StopSubscriptions ();
m_HttpProxy->Stop();
delete m_HttpProxy;
m_HttpProxy = nullptr;
LogPrint("HTTP Proxy stopped");
m_SocksProxy->Stop();
delete m_SocksProxy;
m_SocksProxy = nullptr;
LogPrint("SOCKS Proxy stopped");
for (auto& it: m_ClientTunnels)
{
it.second->Stop ();
LogPrint("I2P client tunnel on port ", it.first, " stopped");
}
m_ClientTunnels.clear ();
for (auto& it: m_ServerTunnels)
{
it.second->Stop ();
LogPrint("I2P server tunnel stopped");
}
m_ServerTunnels.clear ();
if (m_SamBridge)
{
m_SamBridge->Stop ();
delete m_SamBridge;
m_SamBridge = nullptr;
LogPrint("SAM brdige stopped");
}
if (m_BOBCommandChannel)
{
m_BOBCommandChannel->Stop ();
delete m_BOBCommandChannel;
m_BOBCommandChannel = nullptr;
LogPrint("BOB command channel stopped");
}
if (m_I2PControlService)
{
m_I2PControlService->Stop ();
delete m_I2PControlService;
m_I2PControlService = nullptr;
LogPrint("I2PControl stopped");
}
for (auto it: m_Destinations)
it.second->Stop ();
m_Destinations.clear ();
m_SharedLocalDestination = nullptr;
}
std::shared_ptr<ClientDestination> ClientContext::LoadLocalDestination (const std::string& filename, bool isPublic)
{
i2p::data::PrivateKeys keys;
std::string fullPath = i2p::util::filesystem::GetFullPath (filename);
std::ifstream s(fullPath.c_str (), std::ifstream::binary);
if (s.is_open ())
{
s.seekg (0, std::ios::end);
size_t len = s.tellg();
s.seekg (0, std::ios::beg);
uint8_t * buf = new uint8_t[len];
s.read ((char *)buf, len);
keys.FromBuffer (buf, len);
delete[] buf;
LogPrint ("Local address ", m_AddressBook.ToAddress(keys.GetPublic ().GetIdentHash ()), " loaded");
}
else
{
LogPrint ("Can't open file ", fullPath, " Creating new one");
keys = i2p::data::PrivateKeys::CreateRandomKeys (i2p::data::SIGNING_KEY_TYPE_DSA_SHA1);
std::ofstream f (fullPath, std::ofstream::binary | std::ofstream::out);
size_t len = keys.GetFullLen ();
uint8_t * buf = new uint8_t[len];
len = keys.ToBuffer (buf, len);
f.write ((char *)buf, len);
delete[] buf;
LogPrint ("New private keys file ", fullPath, " for ", m_AddressBook.ToAddress(keys.GetPublic ().GetIdentHash ()), " created");
}
std::shared_ptr<ClientDestination> localDestination = nullptr;
std::unique_lock<std::mutex> l(m_DestinationsMutex);
auto it = m_Destinations.find (keys.GetPublic ().GetIdentHash ());
if (it != m_Destinations.end ())
{
LogPrint (eLogWarning, "Local destination ", m_AddressBook.ToAddress(keys.GetPublic ().GetIdentHash ()), " alreday exists");
localDestination = it->second;
}
else
{
localDestination = std::make_shared<ClientDestination> (keys, isPublic);
m_Destinations[localDestination->GetIdentHash ()] = localDestination;
localDestination->Start ();
}
return localDestination;
}
std::shared_ptr<ClientDestination> ClientContext::CreateNewLocalDestination (bool isPublic, i2p::data::SigningKeyType sigType,
const std::map<std::string, std::string> * params)
{
i2p::data::PrivateKeys keys = i2p::data::PrivateKeys::CreateRandomKeys (sigType);
auto localDestination = std::make_shared<ClientDestination> (keys, isPublic, params);
std::unique_lock<std::mutex> l(m_DestinationsMutex);
m_Destinations[localDestination->GetIdentHash ()] = localDestination;
localDestination->Start ();
return localDestination;
}
void ClientContext::DeleteLocalDestination (std::shared_ptr<ClientDestination> destination)
{
if (!destination) return;
auto it = m_Destinations.find (destination->GetIdentHash ());
if (it != m_Destinations.end ())
{
auto d = it->second;
{
std::unique_lock<std::mutex> l(m_DestinationsMutex);
m_Destinations.erase (it);
}
d->Stop ();
}
}
std::shared_ptr<ClientDestination> ClientContext::CreateNewLocalDestination (const i2p::data::PrivateKeys& keys, bool isPublic,
const std::map<std::string, std::string> * params)
{
auto it = m_Destinations.find (keys.GetPublic ().GetIdentHash ());
if (it != m_Destinations.end ())
{
LogPrint ("Local destination ", m_AddressBook.ToAddress(keys.GetPublic ().GetIdentHash ()), " exists");
if (!it->second->IsRunning ())
{
it->second->Start ();
return it->second;
}
return nullptr;
}
auto localDestination = std::make_shared<ClientDestination> (keys, isPublic, params);
std::unique_lock<std::mutex> l(m_DestinationsMutex);
m_Destinations[keys.GetPublic ().GetIdentHash ()] = localDestination;
localDestination->Start ();
return localDestination;
}
std::shared_ptr<ClientDestination> ClientContext::FindLocalDestination (const i2p::data::IdentHash& destination) const
{
auto it = m_Destinations.find (destination);
if (it != m_Destinations.end ())
return it->second;
return nullptr;
}
void ClientContext::ReadTunnels ()
{
std::ifstream ifs (i2p::util::filesystem::GetFullPath (TUNNELS_CONFIG_FILENAME));
if (ifs.good ())
{
boost::program_options::options_description params ("I2P tunnels parameters");
params.add_options ()
// client
(I2P_CLIENT_TUNNEL_NAME, boost::program_options::value<std::vector<std::string> >(), "tunnel name")
(I2P_CLIENT_TUNNEL_PORT, boost::program_options::value<std::vector<int> >(), "Local port")
(I2P_CLIENT_TUNNEL_DESTINATION, boost::program_options::value<std::vector<std::string> >(), "destination")
(I2P_CLIENT_TUNNEL_KEYS, boost::program_options::value<std::vector<std::string> >(), "keys")
// server
(I2P_SERVER_TUNNEL_NAME, boost::program_options::value<std::vector<std::string> >(), "tunnel name")
(I2P_SERVER_TUNNEL_HOST, boost::program_options::value<std::vector<std::string> >(), "host")
(I2P_SERVER_TUNNEL_PORT, boost::program_options::value<std::vector<int> >(), "port")
(I2P_SERVER_TUNNEL_KEYS, boost::program_options::value<std::vector<std::string> >(), "keys")
;
boost::program_options::variables_map vm;
try
{
boost::program_options::store (boost::program_options::parse_config_file (ifs, params), vm);
boost::program_options::notify (vm);
}
catch (boost::program_options::error& ex)
{
LogPrint (eLogError, "Can't parse ", TUNNELS_CONFIG_FILENAME,": ", ex.what ());
return;
}
if (vm.count (I2P_CLIENT_TUNNEL_NAME) > 0)
{
auto names = vm[I2P_CLIENT_TUNNEL_NAME].as<std::vector<std::string> >();
int numClientTunnels = names.size ();
auto ports = vm[I2P_CLIENT_TUNNEL_PORT].as<std::vector<int> >();
auto destinations = vm[I2P_CLIENT_TUNNEL_DESTINATION].as<std::vector<std::string> >();
auto keys = vm[I2P_CLIENT_TUNNEL_KEYS].as<std::vector<std::string> >();
for (int i = 0; i < numClientTunnels; i++)
{
std::shared_ptr<ClientDestination> localDestination = nullptr;
if (keys[i].length () > 0)
localDestination = LoadLocalDestination (keys[i], false);
auto clientTunnel = new I2PClientTunnel (destinations[i], ports[i], localDestination);
if (m_ClientTunnels.insert (std::make_pair (ports[i], std::unique_ptr<I2PClientTunnel>(clientTunnel))).second)
clientTunnel->Start ();
else
LogPrint (eLogError, "I2P client tunnel with port ", ports[i], " already exists");
}
LogPrint (eLogInfo, numClientTunnels, " I2P client tunnels created");
}
if (vm.count (I2P_SERVER_TUNNEL_NAME) > 0)
{
auto names = vm[I2P_SERVER_TUNNEL_NAME].as<std::vector<std::string> >();
int numServerTunnels = names.size ();
auto hosts = vm[I2P_SERVER_TUNNEL_HOST].as<std::vector<std::string> >();
auto ports = vm[I2P_SERVER_TUNNEL_PORT].as<std::vector<int> >();
auto keys = vm[I2P_SERVER_TUNNEL_KEYS].as<std::vector<std::string> >();
for (int i = 0; i < numServerTunnels; i++)
{
auto localDestination = LoadLocalDestination (keys[i], true);
auto serverTunnel = new I2PServerTunnel (hosts[i], ports[i], localDestination);
if (m_ServerTunnels.insert (std::make_pair (localDestination->GetIdentHash (), std::unique_ptr<I2PServerTunnel>(serverTunnel))).second)
serverTunnel->Start ();
else
LogPrint (eLogError, "I2P server tunnel for destination ", m_AddressBook.ToAddress(localDestination->GetIdentHash ()), " already exists");
}
LogPrint (eLogInfo, numServerTunnels, " I2P server tunnels created");
}
}
}
}
}