#include #include #include #include #include #include #include #include #include #include namespace llarp { template < typename Config, typename Section > Section find_section(Config &c, const std::string &name, const Section &fallback) { Section ret; if(c.VisitSection(name.c_str(), [&ret](const ConfigParser::Section_t &s) -> bool { for(const auto &item : s) { ret.emplace_back(string_view_string(item.first), string_view_string(item.second)); } return true; })) return ret; else return fallback; } bool Config::Load(const char *fname) { ConfigParser parser; if(!parser.LoadFile(fname)) { return false; } router = find_section(parser, "router", section_t{}); network = find_section(parser, "network", section_t{}); connect = find_section(parser, "connect", section_t{}); netdb = find_section(parser, "netdb", section_t{}); dns = find_section(parser, "dns", section_t{}); iwp_links = find_section(parser, "bind", section_t{}); services = find_section(parser, "services", section_t{}); system = find_section(parser, "system", section_t{}); metrics = find_section(parser, "metrics", section_t{}); api = find_section(parser, "api", section_t{}); lokid = find_section(parser, "lokid", section_t{}); bootstrap = find_section(parser, "bootstrap", section_t{}); logging = find_section(parser, "logging", section_t{}); return true; } void Config::visit(const Visitor &functor) { std::unordered_map< std::string, const llarp::Config::section_t & > sections = {{"network", network}, {"connect", connect}, {"bootstrap", bootstrap}, {"system", system}, {"metrics", metrics}, {"netdb", netdb}, {"api", api}, {"services", services}}; auto visitor = [&](const char *name, const auto &item) { functor(name, item.first.c_str(), item.second.c_str()); }; using namespace std::placeholders; std::for_each(logging.begin(), logging.end(), std::bind(visitor, "logging", _1)); std::for_each(lokid.begin(), lokid.end(), std::bind(visitor, "lokid", _1)); std::for_each(router.begin(), router.end(), std::bind(visitor, "router", _1)); std::for_each(dns.begin(), dns.end(), std::bind(visitor, "dns", _1)); std::for_each(iwp_links.begin(), iwp_links.end(), std::bind(visitor, "bind", _1)); std::for_each(sections.begin(), sections.end(), [&](const auto §ion) { std::for_each(section.second.begin(), section.second.end(), std::bind(visitor, section.first.c_str(), _1)); }); } } // namespace llarp /// fname should be a relative path (from CWD) or absolute path to the config /// file extern "C" bool llarp_ensure_config(const char *fname, const char *basedir, bool overwrite, bool asRouter) { std::error_code ec; if(fs::exists(fname, ec) && !overwrite) { return true; } if(ec) { llarp::LogError(ec); return false; } std::string basepath = ""; if(basedir) { basepath = basedir; #ifndef _WIN32 basepath += "/"; #else basepath += "\\"; #endif } llarp::LogInfo("Attempting to create config file ", fname); // abort if config already exists if(!asRouter) { if(fs::exists(fname, ec) && !overwrite) { llarp::LogError(fname, " currently exists, please use -f to overwrite"); return true; } if(ec) { llarp::LogError(ec); return false; } } // write fname ini std::ofstream f(fname, std::ios::out | std::ios::binary); if(!f.is_open()) { llarp::LogError("failed to open ", fname, " for writing"); return false; } llarp_generic_ensure_config(f, basepath); if(asRouter) { llarp_ensure_router_config(f, basepath); } else { llarp_ensure_client_config(f, basepath); } llarp::LogInfo("Generated new config ", fname); return true; } void llarp_generic_ensure_config(std::ofstream &f, std::string basepath) { f << "# this configuration was auto generated with 'sane' defaults" << std::endl; f << "# change these values as desired" << std::endl; f << std::endl << std::endl; f << "[router]" << std::endl; f << "# number of crypto worker threads " << std::endl; f << "threads=4" << std::endl; f << "# path to store signed RC" << std::endl; f << "contact-file=" << basepath << "self.signed" << std::endl; f << "# path to store transport private key" << std::endl; f << "transport-privkey=" << basepath << "transport.private" << std::endl; f << "# path to store identity signing key" << std::endl; f << "ident-privkey=" << basepath << "identity.private" << std::endl; f << "# encryption key for onion routing" << std::endl; f << "encryption-privkey=" << basepath << "encryption.private" << std::endl; f << std::endl; f << "# uncomment following line to set router nickname to 'lokinet'" << std::endl; f << "#nickname=lokinet" << std::endl; f << std::endl << std::endl; // logging f << "[logging]" << std::endl; f << "level=info" << std::endl; f << "# uncomment for logging to file" << std::endl; f << "#type=file" << std::endl; f << "#file=/path/to/logfile" << std::endl; f << "# uncomment for syslog logging" << std::endl; f << "#type=syslog" << std::endl; // metrics f << "[metrics]" << std::endl; f << "json-metrics-path=" << basepath << "metrics.json" << std::endl; f << std::endl << std::endl; f << "# admin api (disabled by default)" << std::endl; f << "[api]" << std::endl; f << "enabled=false" << std::endl; f << "#authkey=insertpubkey1here" << std::endl; f << "#authkey=insertpubkey2here" << std::endl; f << "#authkey=insertpubkey3here" << std::endl; f << "bind=127.0.0.1:1190" << std::endl; f << std::endl << std::endl; f << "# system settings for privileges and such" << std::endl; f << "[system]" << std::endl; f << "user=" << DEFAULT_LOKINET_USER << std::endl; f << "group=" << DEFAULT_LOKINET_GROUP << std::endl; f << "pidfile=" << basepath << "lokinet.pid" << std::endl; f << std::endl << std::endl; f << "# dns provider configuration section" << std::endl; f << "[dns]" << std::endl; f << "# resolver" << std::endl; f << "upstream=" << DEFAULT_RESOLVER_US << std::endl; // Make auto-config smarter // will this break reproducibility rules? // (probably) #ifdef __linux__ #ifdef ANDROID f << "bind=127.0.0.1:1153" << std::endl; #else f << "bind=127.3.2.1:53" << std::endl; #endif #else f << "bind=127.0.0.1:53" << std::endl; #endif f << std::endl << std::endl; f << "# network database settings block " << std::endl; f << "[netdb]" << std::endl; f << "# directory for network database skiplist storage" << std::endl; f << "dir=" << basepath << "netdb" << std::endl; f << std::endl << std::endl; f << "# bootstrap settings" << std::endl; f << "[bootstrap]" << std::endl; f << "# add a bootstrap node's signed identity to the list of nodes we want " "to bootstrap from" << std::endl; f << "# if we don't have any peers we connect to this router" << std::endl; f << "add-node=" << basepath << "bootstrap.signed" << std::endl; // we only process one of these... // f << "# add another bootstrap node" << std::endl; // f << "#add-node=/path/to/alternative/self.signed" << std::endl; f << std::endl << std::endl; } void llarp_ensure_router_config(std::ofstream &f, std::string basepath) { f << "# lokid settings (disabled by default)" << std::endl; f << "[lokid]" << std::endl; f << "enabled=false" << std::endl; f << "jsonrpc=127.0.0.1:22023" << std::endl; f << "#service-node-seed=/path/to/servicenode/seed" << std::endl; f << std::endl; f << "# network settings " << std::endl; f << "[network]" << std::endl; f << "profiles=" << basepath << "profiles.dat" << std::endl; // better to let the routers auto-configure // f << "ifaddr=auto" << std::endl; // f << "ifname=auto" << std::endl; f << "enabled=true" << std::endl; f << "exit=false" << std::endl; f << "#exit-blacklist=tcp:25" << std::endl; f << "#exit-whitelist=tcp:*" << std::endl; f << "#exit-whitelist=udp:*" << std::endl; f << std::endl; f << "# ROUTERS ONLY: publish network interfaces for handling inbound traffic" << std::endl; f << "[bind]" << std::endl; // get ifname std::string ifname; if(llarp::GetBestNetIF(ifname, AF_INET)) f << ifname << "=1090" << std::endl; else f << "# could not autodetect network interface" << std::endl << "#eth0=1090" << std::endl; f << std::endl; } bool llarp_ensure_client_config(std::ofstream &f, std::string basepath) { // write snapp-example.ini const std::string snappExample_fpath = basepath + "snapp-example.ini"; { std::ofstream example_f(snappExample_fpath, std::ios::binary | std::ios::out); if(f.is_open()) { // pick ip std::string ip = llarp::findFreePrivateRange(); if(ip == "") { llarp::LogError( "Couldn't easily detect a private range to map lokinet onto"); return false; } example_f << "# this is an example configuration for a snapp" << std::endl; example_f << "[example-snapp]" << std::endl; example_f << "# keyfile is the path to the private key of the snapp, " "your .loki is tied to this key, DON'T LOSE IT" << std::endl; example_f << "keyfile=" << basepath << "example-snap-keyfile.private" << std::endl; example_f << "# ifaddr is the ip range to allocate to this snapp" << std::endl; example_f << "ifaddr=" << ip << std::endl; // probably fine to leave this (and not-auto-detect it) I'm not worried // about any collisions example_f << "# ifname is the name to try and give to the network " "interface this snap owns" << std::endl; example_f << "ifname=snapp-tun0" << std::endl; } else { llarp::LogError("failed to write ", snappExample_fpath); } } // now do up fname f << std::endl << std::endl; f << "# snapps configuration section" << std::endl; f << "[services]"; f << "# uncomment next line to enable a snapp" << std::endl; f << "#example-snapp=" << snappExample_fpath << std::endl; f << std::endl << std::endl; f << "# network settings " << std::endl; f << "[network]" << std::endl; f << "profiles=" << basepath << "profiles.dat" << std::endl; f << "# uncomment next line to add router with pubkey to list of routers we " "connect directly to" << std::endl; f << "#strict-connect=pubkey" << std::endl; f << "# uncomment next line to use router with pubkey as an exit node" << std::endl; f << "#exit-node=pubkey" << std::endl; // better to set them to auto then to hard code them now // operating environment may change over time and this will help adapt // f << "ifname=auto" << std::endl; // f << "ifaddr=auto" << std::endl; // should this also be auto? or not declared? // probably auto in case they want to set up a hidden service f << "enabled=true" << std::endl; return true; }