/* * Copyright (c) 2013-2022, The PurpleI2P Project * * This file is part of Purple i2pd project and licensed under BSD3 * * See full license text in LICENSE file at top of project tree */ #include #include #include #include #include "Config.h" #include "FS.h" #include "Log.h" #include "Identity.h" #include "util.h" #include "ClientContext.h" #include "SOCKS.h" #include "MatchedDestination.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 () { // shared local destination if (!m_SharedLocalDestination) CreateNewSharedLocalDestination (); // addressbook m_AddressBook.Start (); // HTTP proxy ReadHttpProxy (); // SOCKS proxy ReadSocksProxy (); // 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); bool singleThread; i2p::config::GetOption("sam.singlethread", singleThread); LogPrint(eLogInfo, "Clients: Starting SAM bridge at ", samAddr, ":", samPort); try { m_SamBridge = new SAMBridge (samAddr, samPort, singleThread); m_SamBridge->Start (); } catch (std::exception& e) { LogPrint(eLogError, "Clients: Exception in SAM bridge: ", e.what()); ThrowFatal ("Unable to start SAM bridge at ", samAddr, ":", samPort, ": ", 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()); ThrowFatal ("Unable to start BOB bridge at ", bobAddr, ":", bobPort, ": ", 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); bool singleThread; i2p::config::GetOption("i2cp.singlethread", singleThread); LogPrint(eLogInfo, "Clients: Starting I2CP at ", i2cpAddr, ":", i2cpPort); try { m_I2CPServer = new I2CPServer (i2cpAddr, i2cpPort, singleThread); m_I2CPServer->Start (); } catch (std::exception& e) { LogPrint(eLogError, "Clients: Exception in I2CP: ", e.what()); ThrowFatal ("Unable to start I2CP at ", i2cpAddr, ":", i2cpPort, ": ", 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 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->Release (); m_SharedLocalDestination = nullptr; } void ClientContext::ReloadConfig () { // TODO: handle config changes /*std::string config; i2p::config::GetOption("conf", config); i2p::config::ParseConfig(config);*/ // change shared local destination m_SharedLocalDestination->Release (); CreateNewSharedLocalDestination (); // recreate HTTP proxy if (m_HttpProxy) { m_HttpProxy->Stop (); delete m_HttpProxy; m_HttpProxy = nullptr; } ReadHttpProxy (); // recreate SOCKS proxy if (m_SocksProxy) { m_SocksProxy->Stop (); delete m_SocksProxy; m_SocksProxy = nullptr; } ReadSocksProxy (); // handle tunnels // reset isUpdated for each tunnel VisitTunnels (false); // reload tunnels ReadTunnels(); // delete not updated tunnels (not in config anymore) VisitTunnels (true); // delete unused destinations std::unique_lock l(m_DestinationsMutex); for (auto it = m_Destinations.begin (); it != m_Destinations.end ();) { auto dest = it->second; if (dest->GetRefCounter () > 0) ++it; // skip else { dest->Stop (); it = m_Destinations.erase (it); } } } bool ClientContext::LoadPrivateKeys (i2p::data::PrivateKeys& keys, const std::string& filename, i2p::data::SigningKeyType sigType, i2p::data::CryptoKeyType cryptoType) { static const std::string transient("transient"); if (!filename.compare (0, transient.length (), transient)) // starts with transient { keys = i2p::data::PrivateKeys::CreateRandomKeys (sigType, cryptoType); LogPrint (eLogInfo, "Clients: New transient keys address ", m_AddressBook.ToAddress(keys.GetPublic ()->GetIdentHash ()), " created"); return true; } 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, " crypto type ", cryptoType); keys = i2p::data::PrivateKeys::CreateRandomKeys (sigType, cryptoType); 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 > ClientContext::GetForwardInfosFor(const i2p::data::IdentHash & destination) { std::vector > infos; std::lock_guard 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 ClientContext::CreateNewLocalDestination (bool isPublic, i2p::data::SigningKeyType sigType, i2p::data::CryptoKeyType cryptoType, const std::map * params) { i2p::data::PrivateKeys keys = i2p::data::PrivateKeys::CreateRandomKeys (sigType, cryptoType); auto localDestination = std::make_shared (keys, isPublic, params); AddLocalDestination (localDestination); return localDestination; } std::shared_ptr ClientContext::CreateNewLocalDestination ( boost::asio::io_service& service, bool isPublic, i2p::data::SigningKeyType sigType, i2p::data::CryptoKeyType cryptoType, const std::map * params) { i2p::data::PrivateKeys keys = i2p::data::PrivateKeys::CreateRandomKeys (sigType, cryptoType); auto localDestination = std::make_shared (service, keys, isPublic, params); AddLocalDestination (localDestination); return localDestination; } std::shared_ptr ClientContext::CreateNewMatchedTunnelDestination(const i2p::data::PrivateKeys &keys, const std::string & name, const std::map * params) { auto localDestination = std::make_shared(keys, name, params); AddLocalDestination (localDestination); return localDestination; } void ClientContext::AddLocalDestination (std::shared_ptr localDestination) { std::unique_lock l(m_DestinationsMutex); m_Destinations[localDestination->GetIdentHash ()] = localDestination; localDestination->Start (); } void ClientContext::DeleteLocalDestination (std::shared_ptr destination) { if (!destination) return; auto it = m_Destinations.find (destination->GetIdentHash ()); if (it != m_Destinations.end ()) { auto d = it->second; { std::unique_lock l(m_DestinationsMutex); m_Destinations.erase (it); } d->Stop (); } } std::shared_ptr ClientContext::CreateNewLocalDestination (const i2p::data::PrivateKeys& keys, bool isPublic, const std::map * 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"); it->second->Start (); // make sure to start return it->second; } auto localDestination = std::make_shared (keys, isPublic, params); AddLocalDestination (localDestination); return localDestination; } std::shared_ptr ClientContext::CreateNewLocalDestination (boost::asio::io_service& service, const i2p::data::PrivateKeys& keys, bool isPublic, const std::map * 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"); it->second->Start (); // make sure to start return it->second; } auto localDestination = std::make_shared (service, keys, isPublic, params); AddLocalDestination (localDestination); return localDestination; } void ClientContext::CreateNewSharedLocalDestination () { std::map params { { I2CP_PARAM_INBOUND_TUNNELS_QUANTITY, "3" }, { I2CP_PARAM_OUTBOUND_TUNNELS_QUANTITY, "3" }, { I2CP_PARAM_LEASESET_TYPE, "3" }, { I2CP_PARAM_LEASESET_ENCRYPTION_TYPE, "0,4" } }; m_SharedLocalDestination = CreateNewLocalDestination (false, i2p::data::SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519, i2p::data::CRYPTO_KEY_TYPE_ELGAMAL, ¶ms); // non-public, EDDSA m_SharedLocalDestination->Acquire (); } std::shared_ptr 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 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 std::string ClientContext::GetI2CPStringOption (const Section& section, const std::string& name, const std::string& value) const { return section.second.get (boost::property_tree::ptree::path_type (name, '/'), value); } template void ClientContext::ReadI2CPOptionsGroup (const Section& section, const std::string& group, std::map& options) const { for (auto it: section.second) { if (it.first.length () >= group.length () && !it.first.compare (0, group.length (), group)) options[it.first] = it.second.get_value (""); } } template void ClientContext::ReadI2CPOptions (const Section& section, bool isServer, std::map& 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_INBOUND_TUNNELS_LENGTH_VARIANCE] = GetI2CPOption (section, I2CP_PARAM_INBOUND_TUNNELS_LENGTH_VARIANCE, DEFAULT_INBOUND_TUNNELS_LENGTH_VARIANCE); options[I2CP_PARAM_OUTBOUND_TUNNELS_LENGTH_VARIANCE] = GetI2CPOption (section, I2CP_PARAM_OUTBOUND_TUNNELS_LENGTH_VARIANCE, DEFAULT_OUTBOUND_TUNNELS_LENGTH_VARIANCE); 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); options[I2CP_PARAM_STREAMING_INITIAL_ACK_DELAY] = GetI2CPOption(section, I2CP_PARAM_STREAMING_INITIAL_ACK_DELAY, DEFAULT_INITIAL_ACK_DELAY); options[I2CP_PARAM_STREAMING_ANSWER_PINGS] = GetI2CPOption(section, I2CP_PARAM_STREAMING_ANSWER_PINGS, isServer ? DEFAULT_ANSWER_PINGS : false); options[I2CP_PARAM_LEASESET_TYPE] = GetI2CPOption(section, I2CP_PARAM_LEASESET_TYPE, DEFAULT_LEASESET_TYPE); std::string encType = GetI2CPStringOption(section, I2CP_PARAM_LEASESET_ENCRYPTION_TYPE, "0,4"); if (encType.length () > 0) options[I2CP_PARAM_LEASESET_ENCRYPTION_TYPE] = encType; std::string privKey = GetI2CPStringOption(section, I2CP_PARAM_LEASESET_PRIV_KEY, ""); if (privKey.length () > 0) options[I2CP_PARAM_LEASESET_PRIV_KEY] = privKey; auto authType = GetI2CPOption(section, I2CP_PARAM_LEASESET_AUTH_TYPE, 0); if (authType != "0") // auth is set { options[I2CP_PARAM_LEASESET_AUTH_TYPE] = authType; if (authType == "1") // DH ReadI2CPOptionsGroup (section, I2CP_PARAM_LEASESET_CLIENT_DH, options); else if (authType == "2") // PSK ReadI2CPOptionsGroup (section, I2CP_PARAM_LEASESET_CLIENT_PSK, options); } std::string explicitPeers = GetI2CPStringOption(section, I2CP_PARAM_EXPLICIT_PEERS, ""); if (explicitPeers.length () > 0) options[I2CP_PARAM_EXPLICIT_PEERS] = explicitPeers; std::string ratchetInboundTags = GetI2CPStringOption(section, I2CP_PARAM_RATCHET_INBOUND_TAGS, ""); if (ratchetInboundTags.length () > 0) options[I2CP_PARAM_RATCHET_INBOUND_TAGS] = ratchetInboundTags; } void ClientContext::ReadI2CPOptionsFromConfig (const std::string& prefix, std::map& 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_INBOUND_TUNNELS_LENGTH_VARIANCE, value)) options[I2CP_PARAM_INBOUND_TUNNELS_LENGTH_VARIANCE] = 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_OUTBOUND_TUNNELS_LENGTH_VARIANCE, value)) options[I2CP_PARAM_OUTBOUND_TUNNELS_LENGTH_VARIANCE] = 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; if (i2p::config::GetOption(prefix + I2CP_PARAM_LEASESET_TYPE, value)) options[I2CP_PARAM_LEASESET_TYPE] = value; if (i2p::config::GetOption(prefix + I2CP_PARAM_LEASESET_ENCRYPTION_TYPE, value)) options[I2CP_PARAM_LEASESET_ENCRYPTION_TYPE] = value; if (i2p::config::GetOption(prefix + I2CP_PARAM_LEASESET_PRIV_KEY, value) && !value.empty ()) options[I2CP_PARAM_LEASESET_PRIV_KEY] = value; } void ClientContext::ReadTunnels () { int numClientTunnels = 0, numServerTunnels = 0; std::string tunConf; i2p::config::GetOption("tunconf", tunConf); if (tunConf.empty ()) tunConf = i2p::fs::DataDirPath ("tunnels.conf"); LogPrint(eLogDebug, "Clients: Tunnels config file: ", tunConf); ReadTunnels (tunConf, numClientTunnels, numServerTunnels); std::string tunDir; i2p::config::GetOption("tunnelsdir", tunDir); if (tunDir.empty ()) tunDir = i2p::fs::DataDirPath ("tunnels.d"); if (i2p::fs::Exists (tunDir)) { std::vector files; if (i2p::fs::ReadDir (tunDir, files)) { for (auto& it: files) { if (it.substr(it.size() - 5) != ".conf") continue; // skip files which not ends with ".conf" LogPrint(eLogDebug, "Clients: Tunnels extra config file: ", it); ReadTunnels (it, numClientTunnels, numServerTunnels); } } } LogPrint (eLogInfo, "Clients: ", numClientTunnels, " I2P client tunnels created"); LogPrint (eLogInfo, "Clients: ", numServerTunnels, " I2P server tunnels created"); } void ClientContext::ReadTunnels (const std::string& tunConf, int& numClientTunnels, int& numServerTunnels) { boost::property_tree::ptree pt; try { boost::property_tree::read_ini (tunConf, pt); } catch (std::exception& ex) { LogPrint (eLogWarning, "Clients: Can't read ", tunConf, ": ", ex.what ()); return; } std::map > destinations; // keys -> destination for (auto& section: pt) { std::string name = section.first; try { std::string type = section.second.get (I2P_TUNNELS_SECTION_TYPE); if (type == I2P_TUNNELS_SECTION_TYPE_CLIENT || type == I2P_TUNNELS_SECTION_TYPE_SOCKS || type == I2P_TUNNELS_SECTION_TYPE_WEBSOCKS || type == I2P_TUNNELS_SECTION_TYPE_HTTPPROXY || type == I2P_TUNNELS_SECTION_TYPE_UDPCLIENT) { // mandatory params std::string dest; if (type == I2P_TUNNELS_SECTION_TYPE_CLIENT || type == I2P_TUNNELS_SECTION_TYPE_UDPCLIENT) dest = section.second.get (I2P_CLIENT_TUNNEL_DESTINATION); int port = section.second.get (I2P_CLIENT_TUNNEL_PORT); // optional params bool matchTunnels = section.second.get(I2P_CLIENT_TUNNEL_MATCH_TUNNELS, false); std::string keys = section.second.get (I2P_CLIENT_TUNNEL_KEYS, "transient"); 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_EDDSA_SHA512_ED25519); i2p::data::CryptoKeyType cryptoType = section.second.get (I2P_CLIENT_TUNNEL_CRYPTO_TYPE, i2p::data::CRYPTO_KEY_TYPE_ELGAMAL); // I2CP std::map options; ReadI2CPOptions (section, false, options); std::shared_ptr localDestination = nullptr; if (keys.length () > 0) { auto it = destinations.find (keys); if (it != destinations.end ()) localDestination = it->second; else { i2p::data::PrivateKeys k; if(LoadPrivateKeys (k, keys, sigType, cryptoType)) { localDestination = FindLocalDestination (k.GetPublic ()->GetIdentHash ()); if (!localDestination) { if(matchTunnels) localDestination = CreateNewMatchedTunnelDestination(k, dest, &options); else localDestination = CreateNewLocalDestination (k, type == I2P_TUNNELS_SECTION_TYPE_UDPCLIENT, &options); if (keys != "transient") destinations[keys] = localDestination; } } } } 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; bool gzip = section.second.get (I2P_CLIENT_TUNNEL_GZIP, true); auto clientTunnel = std::make_shared (name, dest, end, localDestination, destinationPort, gzip); auto ins = m_ClientForwards.insert (std::make_pair (end, clientTunnel)); if (ins.second) { clientTunnel->Start (); numClientTunnels++; } else { // TODO: update if (ins.first->second->GetLocalDestination () != clientTunnel->GetLocalDestination ()) { LogPrint (eLogInfo, "Clients: I2P UDP client tunnel destination updated"); ins.first->second->Stop (); ins.first->second->SetLocalDestination (clientTunnel->GetLocalDestination ()); ins.first->second->Start (); } ins.first->second->isUpdated = true; LogPrint(eLogError, "Clients: I2P Client forward for endpoint ", end, " already exists"); } } else { boost::asio::ip::tcp::endpoint clientEndpoint; std::shared_ptr clientTunnel; if (type == I2P_TUNNELS_SECTION_TYPE_SOCKS) { // socks proxy std::string outproxy = section.second.get("outproxy", ""); auto tun = std::make_shared(name, address, port, !outproxy.empty(), outproxy, destinationPort, localDestination); clientTunnel = tun; clientEndpoint = tun->GetLocalEndpoint (); } else if (type == I2P_TUNNELS_SECTION_TYPE_HTTPPROXY) { // http proxy std::string outproxy = section.second.get("outproxy", ""); bool addresshelper = section.second.get("addresshelper", true); auto tun = std::make_shared(name, address, port, outproxy, addresshelper, localDestination); clientTunnel = tun; clientEndpoint = tun->GetLocalEndpoint (); } else if (type == I2P_TUNNELS_SECTION_TYPE_WEBSOCKS) { LogPrint(eLogWarning, "Clients: I2P Client tunnel websocks is deprecated, not starting ", name, " tunnel"); continue; } else { // tcp client auto tun = std::make_shared (name, dest, address, port, localDestination, destinationPort); clientTunnel = tun; clientEndpoint = tun->GetLocalEndpoint (); uint32_t keepAlive = section.second.get(I2P_CLIENT_TUNNEL_KEEP_ALIVE_INTERVAL, 0); if (keepAlive) { tun->SetKeepAliveInterval (keepAlive); LogPrint(eLogInfo, "Clients: I2P Client tunnel keep alive interval set to ", keepAlive); } } uint32_t timeout = section.second.get(I2P_CLIENT_TUNNEL_CONNECT_TIMEOUT, 0); if(timeout) { clientTunnel->SetConnectTimeout(timeout); LogPrint(eLogInfo, "Clients: I2P Client tunnel connect timeout set to ", timeout); } auto ins = m_ClientTunnels.insert (std::make_pair (clientEndpoint, clientTunnel)); if (ins.second) { clientTunnel->Start (); numClientTunnels++; } else { // TODO: update if (ins.first->second->GetLocalDestination () != clientTunnel->GetLocalDestination ()) { LogPrint (eLogInfo, "Clients: I2P client tunnel destination updated"); ins.first->second->Stop (); ins.first->second->SetLocalDestination (clientTunnel->GetLocalDestination ()); ins.first->second->Start (); } ins.first->second->isUpdated = true; LogPrint (eLogInfo, "Clients: I2P client tunnel for endpoint ", clientEndpoint, " 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 (I2P_SERVER_TUNNEL_HOST); int port = section.second.get (I2P_SERVER_TUNNEL_PORT); std::string keys = section.second.get (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, ""); if(accessList == "") accessList=section.second.get (I2P_SERVER_TUNNEL_WHITE_LIST, ""); std::string hostOverride = section.second.get (I2P_SERVER_TUNNEL_HOST_OVERRIDE, ""); std::string webircpass = section.second.get (I2P_SERVER_TUNNEL_WEBIRC_PASSWORD, ""); bool gzip = section.second.get (I2P_SERVER_TUNNEL_GZIP, false); i2p::data::SigningKeyType sigType = section.second.get (I2P_SERVER_TUNNEL_SIGNATURE_TYPE, i2p::data::SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519); i2p::data::CryptoKeyType cryptoType = section.second.get (I2P_CLIENT_TUNNEL_CRYPTO_TYPE, i2p::data::CRYPTO_KEY_TYPE_ELGAMAL); std::string address = section.second.get (I2P_SERVER_TUNNEL_ADDRESS, ""); bool isUniqueLocal = section.second.get(I2P_SERVER_TUNNEL_ENABLE_UNIQUE_LOCAL, true); // I2CP std::map options; ReadI2CPOptions (section, true, options); std::shared_ptr localDestination = nullptr; auto it = destinations.find (keys); if (it != destinations.end ()) { localDestination = it->second; localDestination->SetPublic (true); } else { i2p::data::PrivateKeys k; if(!LoadPrivateKeys (k, keys, sigType, cryptoType)) continue; localDestination = FindLocalDestination (k.GetPublic ()->GetIdentHash ()); if (!localDestination) { localDestination = CreateNewLocalDestination (k, true, &options); destinations[keys] = localDestination; } else localDestination->SetPublic (true); } if (type == I2P_TUNNELS_SECTION_TYPE_UDPSERVER) { // udp server tunnel // TODO: hostnames boost::asio::ip::udp::endpoint endpoint(boost::asio::ip::address::from_string(host), port); if (address.empty ()) { if (!endpoint.address ().is_unspecified () && endpoint.address ().is_v6 ()) address = "::1"; else address = "127.0.0.1"; } auto localAddress = boost::asio::ip::address::from_string(address); auto serverTunnel = std::make_shared(name, localDestination, localAddress, endpoint, port, gzip); if(!isUniqueLocal) { LogPrint(eLogInfo, "Clients: Disabling loopback address mapping"); serverTunnel->SetUniqueLocal(isUniqueLocal); } std::lock_guard lock(m_ForwardsMutex); auto ins = m_ServerForwards.insert(std::make_pair( std::make_pair(localDestination->GetIdentHash(), port), serverTunnel)); if (ins.second) { serverTunnel->Start(); LogPrint(eLogInfo, "Clients: I2P Server Forward created for UDP Endpoint ", host, ":", port, " bound on ", address, " for ",localDestination->GetIdentHash().ToBase32()); } else { ins.first->second->isUpdated = true; LogPrint(eLogError, "Clients: I2P Server Forward for destination/port ", m_AddressBook.ToAddress(localDestination->GetIdentHash()), "/", port, " already exists"); } continue; } std::shared_ptr serverTunnel; if (type == I2P_TUNNELS_SECTION_TYPE_HTTP) serverTunnel = std::make_shared (name, host, port, localDestination, hostOverride, inPort, gzip); else if (type == I2P_TUNNELS_SECTION_TYPE_IRC) serverTunnel = std::make_shared (name, host, port, localDestination, webircpass, inPort, gzip); else // regular server tunnel by default serverTunnel = std::make_shared (name, host, port, localDestination, inPort, gzip); if (!address.empty ()) serverTunnel->SetLocalAddress (address); if(!isUniqueLocal) { LogPrint(eLogInfo, "Clients: Disabling loopback address mapping"); serverTunnel->SetUniqueLocal(isUniqueLocal); } if (accessList.length () > 0) { std::set 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); } auto ins = m_ServerTunnels.insert (std::make_pair ( std::make_pair (localDestination->GetIdentHash (), inPort), serverTunnel)); if (ins.second) { serverTunnel->Start (); numServerTunnels++; } else { // TODO: update if (ins.first->second->GetLocalDestination () != serverTunnel->GetLocalDestination ()) { LogPrint (eLogInfo, "Clients: I2P server tunnel destination updated"); ins.first->second->Stop (); ins.first->second->SetLocalDestination (serverTunnel->GetLocalDestination ()); ins.first->second->Start (); } ins.first->second->isUpdated = true; LogPrint (eLogInfo, "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 ()); ThrowFatal ("Unable to start tunnel ", name, ": ", ex.what ()); } } } void ClientContext::ReadHttpProxy () { std::shared_ptr 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); std::string httpOutProxyURL; i2p::config::GetOption("httpproxy.outproxy", httpOutProxyURL); bool httpAddresshelper; i2p::config::GetOption("httpproxy.addresshelper", httpAddresshelper); i2p::data::SigningKeyType sigType; i2p::config::GetOption("httpproxy.signaturetype", sigType); LogPrint(eLogInfo, "Clients: Starting HTTP Proxy at ", httpProxyAddr, ":", httpProxyPort); if (httpProxyKeys.length () > 0) { i2p::data::PrivateKeys keys; if(LoadPrivateKeys (keys, httpProxyKeys, sigType)) { std::map params; ReadI2CPOptionsFromConfig ("httpproxy.", params); localDestination = CreateNewLocalDestination (keys, false, ¶ms); if (localDestination) localDestination->Acquire (); } else LogPrint(eLogError, "Clients: Failed to load HTTP Proxy key"); } try { m_HttpProxy = new i2p::proxy::HTTPProxy("HTTP Proxy", httpProxyAddr, httpProxyPort, httpOutProxyURL, httpAddresshelper, localDestination); m_HttpProxy->Start(); } catch (std::exception& e) { LogPrint(eLogError, "Clients: Exception in HTTP Proxy: ", e.what()); ThrowFatal ("Unable to start HTTP Proxy at ", httpProxyAddr, ":", httpProxyPort, ": ", e.what ()); } } } void ClientContext::ReadSocksProxy () { std::shared_ptr localDestination; bool socksproxy; i2p::config::GetOption("socksproxy.enabled", socksproxy); if (socksproxy) { std::string httpProxyKeys; i2p::config::GetOption("httpproxy.keys", httpProxyKeys); // we still need httpProxyKeys to compare with sockProxyKeys 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); bool socksOutProxy; i2p::config::GetOption("socksproxy.outproxy.enabled", socksOutProxy); std::string socksOutProxyAddr; i2p::config::GetOption("socksproxy.outproxy", socksOutProxyAddr); uint16_t socksOutProxyPort; i2p::config::GetOption("socksproxy.outproxyport", socksOutProxyPort); i2p::data::SigningKeyType sigType; i2p::config::GetOption("socksproxy.signaturetype", sigType); LogPrint(eLogInfo, "Clients: Starting SOCKS Proxy at ", socksProxyAddr, ":", socksProxyPort); if (httpProxyKeys == socksProxyKeys && m_HttpProxy) { localDestination = m_HttpProxy->GetLocalDestination (); localDestination->Acquire (); } else if (socksProxyKeys.length () > 0) { i2p::data::PrivateKeys keys; if (LoadPrivateKeys (keys, socksProxyKeys, sigType)) { std::map params; ReadI2CPOptionsFromConfig ("socksproxy.", params); localDestination = CreateNewLocalDestination (keys, false, ¶ms); if (localDestination) localDestination->Acquire (); } else LogPrint(eLogError, "Clients: Failed to load SOCKS Proxy key"); } try { m_SocksProxy = new i2p::proxy::SOCKSProxy("SOCKS", socksProxyAddr, socksProxyPort, socksOutProxy, socksOutProxyAddr, socksOutProxyPort, localDestination); m_SocksProxy->Start(); } catch (std::exception& e) { LogPrint(eLogError, "Clients: Exception in SOCKS Proxy: ", e.what()); ThrowFatal ("Unable to start SOCKS Proxy at ", socksProxyAddr, ":", socksProxyPort, ": ", e.what ()); } } } 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 lock(m_ForwardsMutex); for (auto & s : m_ServerForwards ) s.second->ExpireStale(); ScheduleCleanupUDP(); } } void ClientContext::VisitTunnels (bool clean) { for (auto it = m_ClientTunnels.begin (); it != m_ClientTunnels.end ();) { if(clean && !it->second->isUpdated) { it->second->Stop (); it = m_ClientTunnels.erase(it); } else { it->second->isUpdated = false; it++; } } for (auto it = m_ServerTunnels.begin (); it != m_ServerTunnels.end ();) { if(clean && !it->second->isUpdated) { it->second->Stop (); it = m_ServerTunnels.erase(it); } else { it->second->isUpdated = false; it++; } } // TODO: Write correct UDP tunnels stop for (auto it = m_ClientForwards.begin (); it != m_ClientForwards.end ();) { if(clean && !it->second->isUpdated) { it->second->Stop (); it = m_ClientForwards.erase(it); } else { it->second->isUpdated = false; it++; } } for (auto it = m_ServerForwards.begin (); it != m_ServerForwards.end ();) { if(clean && !it->second->isUpdated) { it->second->Stop (); it = m_ServerForwards.erase(it); } else { it->second->isUpdated = false; it++; } } } } }