#include <fstream> #include <iostream> #include <boost/property_tree/ptree.hpp> #include <boost/property_tree/ini_parser.hpp> #include "Config.h" #include "FS.h" #include "Log.h" #include "Identity.h" #include "util.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_I2CPServer (nullptr) { } ClientContext::~ClientContext () { delete m_HttpProxy; delete m_SocksProxy; delete m_SamBridge; delete m_BOBCommandChannel; delete m_I2CPServer; } void ClientContext::Start () { if (!m_SharedLocalDestination) { m_SharedLocalDestination = CreateNewLocalDestination (); // non-public, DSA m_Destinations[m_SharedLocalDestination->GetIdentity ()->GetIdentHash ()] = m_SharedLocalDestination; m_SharedLocalDestination->Start (); } m_AddressBook.Start (); std::shared_ptr<ClientDestination> localDestination; bool httproxy; i2p::config::GetOption("httpproxy.enabled", httproxy); if (httproxy) { std::string httpProxyKeys; i2p::config::GetOption("httpproxy.keys", httpProxyKeys); std::string httpProxyAddr; i2p::config::GetOption("httpproxy.address", httpProxyAddr); uint16_t httpProxyPort; i2p::config::GetOption("httpproxy.port", httpProxyPort); LogPrint(eLogInfo, "Clients: starting HTTP Proxy at ", httpProxyAddr, ":", httpProxyPort); if (httpProxyKeys.length () > 0) { i2p::data::PrivateKeys keys; if(LoadPrivateKeys (keys, httpProxyKeys, i2p::data::SIGNING_KEY_TYPE_DSA_SHA1)) { std::map<std::string, std::string> params; ReadI2CPOptionsFromConfig ("httpproxy.", params); localDestination = CreateNewLocalDestination (keys, false, ¶ms); } else LogPrint(eLogError, "Clients: failed to load HTTP Proxy key"); } try { m_HttpProxy = new i2p::proxy::HTTPProxy(httpProxyAddr, httpProxyPort, localDestination); m_HttpProxy->Start(); } catch (std::exception& e) { LogPrint(eLogError, "Clients: Exception in HTTP Proxy: ", e.what()); } } localDestination = nullptr; bool socksproxy; i2p::config::GetOption("socksproxy.enabled", socksproxy); if (socksproxy) { std::string socksProxyKeys; i2p::config::GetOption("socksproxy.keys", socksProxyKeys); std::string socksProxyAddr; i2p::config::GetOption("socksproxy.address", socksProxyAddr); uint16_t socksProxyPort; i2p::config::GetOption("socksproxy.port", socksProxyPort); std::string socksOutProxyAddr; i2p::config::GetOption("socksproxy.outproxy", socksOutProxyAddr); uint16_t socksOutProxyPort; i2p::config::GetOption("socksproxy.outproxyport", socksOutProxyPort); LogPrint(eLogInfo, "Clients: starting SOCKS Proxy at ", socksProxyAddr, ":", socksProxyPort); if (socksProxyKeys.length () > 0) { i2p::data::PrivateKeys keys; if (LoadPrivateKeys (keys, socksProxyKeys, i2p::data::SIGNING_KEY_TYPE_DSA_SHA1)) { std::map<std::string, std::string> params; ReadI2CPOptionsFromConfig ("socksproxy.", params); localDestination = CreateNewLocalDestination (keys, false, ¶ms); } else LogPrint(eLogError, "Clients: failed to load SOCKS Proxy key"); } try { m_SocksProxy = new i2p::proxy::SOCKSProxy(socksProxyAddr, socksProxyPort, socksOutProxyAddr, socksOutProxyPort, localDestination); m_SocksProxy->Start(); } catch (std::exception& e) { LogPrint(eLogError, "Clients: Exception in SOCKS Proxy: ", e.what()); } } // I2P tunnels ReadTunnels (); // SAM bool sam; i2p::config::GetOption("sam.enabled", sam); if (sam) { std::string samAddr; i2p::config::GetOption("sam.address", samAddr); uint16_t samPort; i2p::config::GetOption("sam.port", samPort); LogPrint(eLogInfo, "Clients: starting SAM bridge at ", samAddr, ":", samPort); try { m_SamBridge = new SAMBridge (samAddr, samPort); m_SamBridge->Start (); } catch (std::exception& e) { LogPrint(eLogError, "Clients: Exception in SAM bridge: ", e.what()); } } // BOB bool bob; i2p::config::GetOption("bob.enabled", bob); if (bob) { std::string bobAddr; i2p::config::GetOption("bob.address", bobAddr); uint16_t bobPort; i2p::config::GetOption("bob.port", bobPort); LogPrint(eLogInfo, "Clients: starting BOB command channel at ", bobAddr, ":", bobPort); try { m_BOBCommandChannel = new BOBCommandChannel (bobAddr, bobPort); m_BOBCommandChannel->Start (); } catch (std::exception& e) { LogPrint(eLogError, "Clients: Exception in BOB bridge: ", e.what()); } } // I2CP bool i2cp; i2p::config::GetOption("i2cp.enabled", i2cp); if (i2cp) { std::string i2cpAddr; i2p::config::GetOption("i2cp.address", i2cpAddr); uint16_t i2cpPort; i2p::config::GetOption("i2cp.port", i2cpPort); LogPrint(eLogInfo, "Clients: starting I2CP at ", i2cpAddr, ":", i2cpPort); try { m_I2CPServer = new I2CPServer (i2cpAddr, i2cpPort); m_I2CPServer->Start (); } catch (std::exception& e) { LogPrint(eLogError, "Clients: Exception in I2CP: ", e.what()); } } m_AddressBook.StartResolvers (); // start UDP cleanup if (!m_ServerForwards.empty ()) { m_CleanupUDPTimer.reset (new boost::asio::deadline_timer(m_SharedLocalDestination->GetService ())); ScheduleCleanupUDP(); } } void ClientContext::Stop () { if (m_HttpProxy) { LogPrint(eLogInfo, "Clients: stopping HTTP Proxy"); m_HttpProxy->Stop(); delete m_HttpProxy; m_HttpProxy = nullptr; } if (m_SocksProxy) { LogPrint(eLogInfo, "Clients: stopping SOCKS Proxy"); m_SocksProxy->Stop(); delete m_SocksProxy; m_SocksProxy = nullptr; } for (auto& it: m_ClientTunnels) { LogPrint(eLogInfo, "Clients: stopping I2P client tunnel on port ", it.first); it.second->Stop (); } m_ClientTunnels.clear (); for (auto& it: m_ServerTunnels) { LogPrint(eLogInfo, "Clients: stopping I2P server tunnel"); it.second->Stop (); } m_ServerTunnels.clear (); if (m_SamBridge) { LogPrint(eLogInfo, "Clients: stopping SAM bridge"); m_SamBridge->Stop (); delete m_SamBridge; m_SamBridge = nullptr; } if (m_BOBCommandChannel) { LogPrint(eLogInfo, "Clients: stopping BOB command channel"); m_BOBCommandChannel->Stop (); delete m_BOBCommandChannel; m_BOBCommandChannel = nullptr; } if (m_I2CPServer) { LogPrint(eLogInfo, "Clients: stopping I2CP"); m_I2CPServer->Stop (); delete m_I2CPServer; m_I2CPServer = nullptr; } LogPrint(eLogInfo, "Clients: stopping AddressBook"); m_AddressBook.Stop (); { std::lock_guard<std::mutex> lock(m_ForwardsMutex); m_ServerForwards.clear(); m_ClientForwards.clear(); } if (m_CleanupUDPTimer) { m_CleanupUDPTimer->cancel (); m_CleanupUDPTimer = nullptr; } for (auto& it: m_Destinations) it.second->Stop (); m_Destinations.clear (); m_SharedLocalDestination = nullptr; } void ClientContext::ReloadConfig () { std::string config; i2p::config::GetOption("conf", config); i2p::config::ParseConfig(config); Stop(); Start(); } bool ClientContext::LoadPrivateKeys (i2p::data::PrivateKeys& keys, const std::string& filename, i2p::data::SigningKeyType sigType) { bool success = true; std::string fullPath = i2p::fs::DataDirPath (filename); std::ifstream s(fullPath, 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); if(!keys.FromBuffer (buf, len)) { LogPrint (eLogError, "Clients: failed to load keyfile ", filename); success = false; } else LogPrint (eLogInfo, "Clients: Local address ", m_AddressBook.ToAddress(keys.GetPublic ()->GetIdentHash ()), " loaded"); delete[] buf; } else { LogPrint (eLogError, "Clients: can't open file ", fullPath, " Creating new one with signature type ", sigType); keys = i2p::data::PrivateKeys::CreateRandomKeys (sigType); 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 (eLogInfo, "Clients: New private keys file ", fullPath, " for ", m_AddressBook.ToAddress(keys.GetPublic ()->GetIdentHash ()), " created"); } return success; } std::vector<std::shared_ptr<DatagramSessionInfo> > ClientContext::GetForwardInfosFor(const i2p::data::IdentHash & destination) { std::vector<std::shared_ptr<DatagramSessionInfo> > infos; std::lock_guard<std::mutex> lock(m_ForwardsMutex); for(const auto & c : m_ClientForwards) { if (c.second->IsLocalDestination(destination)) { for (auto & i : c.second->GetSessions()) infos.push_back(i); break; } } for(const auto & s : m_ServerForwards) { if(std::get<0>(s.first) == destination) { for( auto & i : s.second->GetSessions()) infos.push_back(i); break; } } return infos; } 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 (eLogWarning, "Clients: 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; } template<typename Section, typename Type> std::string ClientContext::GetI2CPOption (const Section& section, const std::string& name, const Type& value) const { return section.second.get (boost::property_tree::ptree::path_type (name, '/'), std::to_string (value)); } template<typename Section> void ClientContext::ReadI2CPOptions (const Section& section, std::map<std::string, std::string>& options) const { options[I2CP_PARAM_INBOUND_TUNNEL_LENGTH] = GetI2CPOption (section, I2CP_PARAM_INBOUND_TUNNEL_LENGTH, DEFAULT_INBOUND_TUNNEL_LENGTH); options[I2CP_PARAM_OUTBOUND_TUNNEL_LENGTH] = GetI2CPOption (section, I2CP_PARAM_OUTBOUND_TUNNEL_LENGTH, DEFAULT_OUTBOUND_TUNNEL_LENGTH); options[I2CP_PARAM_INBOUND_TUNNELS_QUANTITY] = GetI2CPOption (section, I2CP_PARAM_INBOUND_TUNNELS_QUANTITY, DEFAULT_INBOUND_TUNNELS_QUANTITY); options[I2CP_PARAM_OUTBOUND_TUNNELS_QUANTITY] = GetI2CPOption (section, I2CP_PARAM_OUTBOUND_TUNNELS_QUANTITY, DEFAULT_OUTBOUND_TUNNELS_QUANTITY); options[I2CP_PARAM_TAGS_TO_SEND] = GetI2CPOption (section, I2CP_PARAM_TAGS_TO_SEND, DEFAULT_TAGS_TO_SEND); options[I2CP_PARAM_MIN_TUNNEL_LATENCY] = GetI2CPOption(section, I2CP_PARAM_MIN_TUNNEL_LATENCY, DEFAULT_MIN_TUNNEL_LATENCY); options[I2CP_PARAM_MAX_TUNNEL_LATENCY] = GetI2CPOption(section, I2CP_PARAM_MAX_TUNNEL_LATENCY, DEFAULT_MAX_TUNNEL_LATENCY); } void ClientContext::ReadI2CPOptionsFromConfig (const std::string& prefix, std::map<std::string, std::string>& options) const { std::string value; if (i2p::config::GetOption(prefix + I2CP_PARAM_INBOUND_TUNNEL_LENGTH, value)) options[I2CP_PARAM_INBOUND_TUNNEL_LENGTH] = value; if (i2p::config::GetOption(prefix + I2CP_PARAM_INBOUND_TUNNELS_QUANTITY, value)) options[I2CP_PARAM_INBOUND_TUNNELS_QUANTITY] = value; if (i2p::config::GetOption(prefix + I2CP_PARAM_OUTBOUND_TUNNEL_LENGTH, value)) options[I2CP_PARAM_OUTBOUND_TUNNEL_LENGTH] = value; if (i2p::config::GetOption(prefix + I2CP_PARAM_OUTBOUND_TUNNELS_QUANTITY, value)) options[I2CP_PARAM_OUTBOUND_TUNNELS_QUANTITY] = value; if (i2p::config::GetOption(prefix + I2CP_PARAM_MIN_TUNNEL_LATENCY, value)) options[I2CP_PARAM_MIN_TUNNEL_LATENCY] = value; if (i2p::config::GetOption(prefix + I2CP_PARAM_MAX_TUNNEL_LATENCY, value)) options[I2CP_PARAM_MAX_TUNNEL_LATENCY] = value; } void ClientContext::ReadTunnels () { boost::property_tree::ptree pt; std::string tunConf; i2p::config::GetOption("tunconf", tunConf); if (tunConf == "") { // TODO: cleanup this in 2.8.0 tunConf = i2p::fs::DataDirPath ("tunnels.cfg"); if (i2p::fs::Exists(tunConf)) { LogPrint(eLogWarning, "FS: please rename tunnels.cfg -> tunnels.conf here: ", tunConf); } else { tunConf = i2p::fs::DataDirPath ("tunnels.conf"); } } LogPrint(eLogDebug, "FS: tunnels config file: ", tunConf); try { boost::property_tree::read_ini (tunConf, pt); } catch (std::exception& ex) { LogPrint (eLogWarning, "Clients: Can't read ", tunConf, ": ", ex.what ()); return; } int numClientTunnels = 0, numServerTunnels = 0; for (auto& section: pt) { std::string name = section.first; try { std::string type = section.second.get<std::string> (I2P_TUNNELS_SECTION_TYPE); if (type == I2P_TUNNELS_SECTION_TYPE_CLIENT || type == I2P_TUNNELS_SECTION_TYPE_UDPCLIENT) { // mandatory params std::string dest = section.second.get<std::string> (I2P_CLIENT_TUNNEL_DESTINATION); int port = section.second.get<int> (I2P_CLIENT_TUNNEL_PORT); // optional params std::string keys = section.second.get (I2P_CLIENT_TUNNEL_KEYS, ""); std::string address = section.second.get (I2P_CLIENT_TUNNEL_ADDRESS, "127.0.0.1"); int destinationPort = section.second.get (I2P_CLIENT_TUNNEL_DESTINATION_PORT, 0); i2p::data::SigningKeyType sigType = section.second.get (I2P_CLIENT_TUNNEL_SIGNATURE_TYPE, i2p::data::SIGNING_KEY_TYPE_ECDSA_SHA256_P256); // I2CP std::map<std::string, std::string> options; ReadI2CPOptions (section, options); std::shared_ptr<ClientDestination> localDestination = nullptr; if (keys.length () > 0) { i2p::data::PrivateKeys k; if(LoadPrivateKeys (k, keys, sigType)) { localDestination = FindLocalDestination (k.GetPublic ()->GetIdentHash ()); if (!localDestination) localDestination = CreateNewLocalDestination (k, type == I2P_TUNNELS_SECTION_TYPE_UDPCLIENT, &options); } } if (type == I2P_TUNNELS_SECTION_TYPE_UDPCLIENT) { // udp client // TODO: hostnames boost::asio::ip::udp::endpoint end(boost::asio::ip::address::from_string(address), port); if (!localDestination) { localDestination = m_SharedLocalDestination; } auto clientTunnel = new I2PUDPClientTunnel(name, dest, end, localDestination, destinationPort); if(m_ClientForwards.insert(std::make_pair(end, std::unique_ptr<I2PUDPClientTunnel>(clientTunnel))).second) { clientTunnel->Start(); } else LogPrint(eLogError, "Clients: I2P Client forward for endpoint ", end, " already exists"); } else { // tcp client auto clientTunnel = new I2PClientTunnel (name, dest, address, port, localDestination, destinationPort); if (m_ClientTunnels.insert (std::make_pair (clientTunnel->GetAcceptor ().local_endpoint (), std::unique_ptr<I2PClientTunnel>(clientTunnel))).second) { clientTunnel->Start (); numClientTunnels++; } else LogPrint (eLogError, "Clients: I2P client tunnel for endpoint ", clientTunnel->GetAcceptor ().local_endpoint (), " already exists"); } } else if (type == I2P_TUNNELS_SECTION_TYPE_SERVER || type == I2P_TUNNELS_SECTION_TYPE_HTTP || type == I2P_TUNNELS_SECTION_TYPE_IRC || type == I2P_TUNNELS_SECTION_TYPE_UDPSERVER) { // mandatory params std::string host = section.second.get<std::string> (I2P_SERVER_TUNNEL_HOST); int port = section.second.get<int> (I2P_SERVER_TUNNEL_PORT); std::string keys = section.second.get<std::string> (I2P_SERVER_TUNNEL_KEYS); // optional params int inPort = section.second.get (I2P_SERVER_TUNNEL_INPORT, 0); std::string accessList = section.second.get (I2P_SERVER_TUNNEL_ACCESS_LIST, ""); std::string hostOverride = section.second.get (I2P_SERVER_TUNNEL_HOST_OVERRIDE, ""); std::string webircpass = section.second.get<std::string> (I2P_SERVER_TUNNEL_WEBIRC_PASSWORD, ""); bool gzip = section.second.get (I2P_SERVER_TUNNEL_GZIP, true); i2p::data::SigningKeyType sigType = section.second.get (I2P_SERVER_TUNNEL_SIGNATURE_TYPE, i2p::data::SIGNING_KEY_TYPE_ECDSA_SHA256_P256); uint32_t maxConns = section.second.get(i2p::stream::I2CP_PARAM_STREAMING_MAX_CONNS_PER_MIN, i2p::stream::DEFAULT_MAX_CONNS_PER_MIN); std::string address = section.second.get<std::string> (I2P_SERVER_TUNNEL_ADDRESS, "127.0.0.1"); // I2CP std::map<std::string, std::string> options; ReadI2CPOptions (section, options); std::shared_ptr<ClientDestination> localDestination = nullptr; i2p::data::PrivateKeys k; if(!LoadPrivateKeys (k, keys, sigType)) continue; localDestination = FindLocalDestination (k.GetPublic ()->GetIdentHash ()); if (!localDestination) localDestination = CreateNewLocalDestination (k, true, &options); if (type == I2P_TUNNELS_SECTION_TYPE_UDPSERVER) { // udp server tunnel // TODO: hostnames auto localAddress = boost::asio::ip::address::from_string(address); boost::asio::ip::udp::endpoint endpoint(boost::asio::ip::address::from_string(host), port); I2PUDPServerTunnel * serverTunnel = new I2PUDPServerTunnel(name, localDestination, localAddress, endpoint, port); std::lock_guard<std::mutex> lock(m_ForwardsMutex); if(m_ServerForwards.insert( std::make_pair( std::make_pair( localDestination->GetIdentHash(), port), std::unique_ptr<I2PUDPServerTunnel>(serverTunnel))).second) { serverTunnel->Start(); LogPrint(eLogInfo, "Clients: I2P Server Forward created for UDP Endpoint ", host, ":", port, " bound on ", address, " for ",localDestination->GetIdentHash().ToBase32()); } else LogPrint(eLogError, "Clients: I2P Server Forward for destination/port ", m_AddressBook.ToAddress(localDestination->GetIdentHash()), "/", port, "already exists"); continue; } I2PServerTunnel * serverTunnel; if (type == I2P_TUNNELS_SECTION_TYPE_HTTP) serverTunnel = new I2PServerTunnelHTTP (name, host, port, localDestination, hostOverride, inPort, gzip); else if (type == I2P_TUNNELS_SECTION_TYPE_IRC) serverTunnel = new I2PServerTunnelIRC (name, host, port, localDestination, webircpass, inPort, gzip); else // regular server tunnel by default serverTunnel = new I2PServerTunnel (name, host, port, localDestination, inPort, gzip); LogPrint(eLogInfo, "Clients: Set Max Conns To ", maxConns); serverTunnel->SetMaxConnsPerMinute(maxConns); if (accessList.length () > 0) { std::set<i2p::data::IdentHash> idents; size_t pos = 0, comma; do { comma = accessList.find (',', pos); i2p::data::IdentHash ident; ident.FromBase32 (accessList.substr (pos, comma != std::string::npos ? comma - pos : std::string::npos)); idents.insert (ident); pos = comma + 1; } while (comma != std::string::npos); serverTunnel->SetAccessList (idents); } if (m_ServerTunnels.insert (std::make_pair ( std::make_pair (localDestination->GetIdentHash (), inPort), std::unique_ptr<I2PServerTunnel>(serverTunnel))).second) { serverTunnel->Start (); numServerTunnels++; } else LogPrint (eLogError, "Clients: I2P server tunnel for destination/port ", m_AddressBook.ToAddress(localDestination->GetIdentHash ()), "/", inPort, " already exists"); } else LogPrint (eLogWarning, "Clients: Unknown section type=", type, " of ", name, " in ", tunConf); } catch (std::exception& ex) { LogPrint (eLogError, "Clients: Can't read tunnel ", name, " params: ", ex.what ()); } } LogPrint (eLogInfo, "Clients: ", numClientTunnels, " I2P client tunnels created"); LogPrint (eLogInfo, "Clients: ", numServerTunnels, " I2P server tunnels created"); } void ClientContext::ScheduleCleanupUDP() { if (m_CleanupUDPTimer) { // schedule cleanup in 17 seconds m_CleanupUDPTimer->expires_from_now (boost::posix_time::seconds (17)); m_CleanupUDPTimer->async_wait(std::bind(&ClientContext::CleanupUDP, this, std::placeholders::_1)); } } void ClientContext::CleanupUDP(const boost::system::error_code & ecode) { if(!ecode) { std::lock_guard<std::mutex> lock(m_ForwardsMutex); for (auto & s : m_ServerForwards ) s.second->ExpireStale(); ScheduleCleanupUDP(); } } } }