#include #include #include #include #include "Config.h" #include "FS.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) { } ClientContext::~ClientContext () { delete m_HttpProxy; delete m_SocksProxy; delete m_SamBridge; delete m_BOBCommandChannel; } 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 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; LoadPrivateKeys (keys, httpProxyKeys); localDestination = CreateNewLocalDestination (keys, false); } m_HttpProxy = new i2p::proxy::HTTPProxy(httpProxyAddr, httpProxyPort, localDestination); m_HttpProxy->Start(); } 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; LoadPrivateKeys (keys, socksProxyKeys); localDestination = CreateNewLocalDestination (keys, false); } m_SocksProxy = new i2p::proxy::SOCKSProxy(socksProxyAddr, socksProxyPort, socksOutProxyAddr, socksOutProxyPort, localDestination); m_SocksProxy->Start(); } // 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); m_SamBridge = new SAMBridge (samAddr, samPort); m_SamBridge->Start (); } // 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); m_BOBCommandChannel = new BOBCommandChannel (bobAddr, bobPort); m_BOBCommandChannel->Start (); } } void ClientContext::Stop () { LogPrint(eLogInfo, "Clients: stopping HTTP Proxy"); m_HttpProxy->Stop(); delete m_HttpProxy; m_HttpProxy = nullptr; 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; } LogPrint(eLogInfo, "Clients: stopping AddressBook"); m_AddressBook.Stop (); for (auto it: m_Destinations) it.second->Stop (); m_Destinations.clear (); m_SharedLocalDestination = nullptr; } void ClientContext::LoadPrivateKeys (i2p::data::PrivateKeys& keys, const std::string& filename, i2p::data::SigningKeyType sigType) { 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); keys.FromBuffer (buf, len); delete[] buf; LogPrint (eLogInfo, "Clients: Local address ", m_AddressBook.ToAddress(keys.GetPublic ()->GetIdentHash ()), " loaded"); } 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"); } } std::shared_ptr ClientContext::CreateNewLocalDestination (bool isPublic, i2p::data::SigningKeyType sigType, const std::map * params) { i2p::data::PrivateKeys keys = i2p::data::PrivateKeys::CreateRandomKeys (sigType); auto localDestination = std::make_shared (keys, isPublic, params); std::unique_lock l(m_DestinationsMutex); m_Destinations[localDestination->GetIdentHash ()] = localDestination; localDestination->Start (); return localDestination; } 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"); if (!it->second->IsRunning ()) { it->second->Start (); return it->second; } return nullptr; } auto localDestination = std::make_shared (keys, isPublic, params); std::unique_lock l(m_DestinationsMutex); m_Destinations[keys.GetPublic ()->GetIdentHash ()] = localDestination; localDestination->Start (); return localDestination; } 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 void ClientContext::ReadI2CPOptions (const Section& section, 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_TAGS_TO_SEND] = GetI2CPOption (section, I2CP_PARAM_TAGS_TO_SEND, DEFAULT_TAGS_TO_SEND); } void ClientContext::ReadTunnels () { boost::property_tree::ptree pt; std::string tunConf; i2p::config::GetOption("tunconf", tunConf); if (tunConf == "") tunConf = i2p::fs::DataDirPath ("tunnels.cfg"); 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 (I2P_TUNNELS_SECTION_TYPE); if (type == I2P_TUNNELS_SECTION_TYPE_CLIENT) { // mandatory params std::string dest = section.second.get (I2P_CLIENT_TUNNEL_DESTINATION); int port = section.second.get (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 options; ReadI2CPOptions (section, options); std::shared_ptr localDestination = nullptr; if (keys.length () > 0) { i2p::data::PrivateKeys k; LoadPrivateKeys (k, keys, sigType); localDestination = FindLocalDestination (k.GetPublic ()->GetIdentHash ()); if (!localDestination) localDestination = CreateNewLocalDestination (k, false, &options); } auto clientTunnel = new I2PClientTunnel (name, dest, address, port, localDestination, destinationPort); if (m_ClientTunnels.insert (std::make_pair (port, std::unique_ptr(clientTunnel))).second) clientTunnel->Start (); else LogPrint (eLogError, "Clients: I2P client tunnel with port ", port, " already exists"); numClientTunnels++; } else if (type == I2P_TUNNELS_SECTION_TYPE_SERVER || type == I2P_TUNNELS_SECTION_TYPE_HTTP) { // 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, ""); i2p::data::SigningKeyType sigType = section.second.get (I2P_SERVER_TUNNEL_SIGNATURE_TYPE, i2p::data::SIGNING_KEY_TYPE_ECDSA_SHA256_P256); // I2CP std::map options; ReadI2CPOptions (section, options); std::shared_ptr localDestination = nullptr; i2p::data::PrivateKeys k; LoadPrivateKeys (k, keys, sigType); localDestination = FindLocalDestination (k.GetPublic ()->GetIdentHash ()); if (!localDestination) localDestination = CreateNewLocalDestination (k, true, &options); I2PServerTunnel * serverTunnel = (type == I2P_TUNNELS_SECTION_TYPE_HTTP) ? new I2PServerTunnelHTTP (name, host, port, localDestination, inPort) : new I2PServerTunnel (name, host, port, localDestination, inPort); 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); } if (m_ServerTunnels.insert (std::make_pair ( std::make_tuple (localDestination->GetIdentHash (), inPort), std::unique_ptr(serverTunnel))).second) serverTunnel->Start (); else LogPrint (eLogError, "Clients: I2P server tunnel for destination ", m_AddressBook.ToAddress(localDestination->GetIdentHash ()), " already exists"); numServerTunnels++; } 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"); } } }