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587 lines
13 KiB
C++
587 lines
13 KiB
C++
#include <llarp.hpp>
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#include <constants/version.hpp>
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#include <config/config.hpp>
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#include <crypto/crypto_libsodium.hpp>
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#include <crypto/crypto_noop.hpp>
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#include <dht/context.hpp>
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#include <dnsd.hpp>
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#include <ev/ev.hpp>
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#include <ev/vpnio.hpp>
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#include <nodedb.hpp>
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#include <router/router.hpp>
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#include <service/context.hpp>
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#include <util/logging/logger.h>
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#include <util/meta/memfn.hpp>
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#include <util/metrics/json_publisher.hpp>
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#include <util/metrics/metrics.hpp>
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#include <util/metrics/metrictank_publisher.hpp>
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#include <util/metrics/stream_publisher.hpp>
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#include <util/thread/scheduler.hpp>
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#include <absl/strings/str_split.h>
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#include <cxxopts.hpp>
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#include <csignal>
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#if(__FreeBSD__) || (__OpenBSD__) || (__NetBSD__)
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#include <pthread_np.h>
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#endif
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namespace llarp
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{
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Context::Context() = default;
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Context::~Context()
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{
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m_scheduler->stop();
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}
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bool
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Context::CallSafe(std::function< void(void) > f)
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{
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return logic && logic->queue_func(std::move(f));
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}
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void
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Context::progress()
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{
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std::cout << "." << std::flush;
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}
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bool
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Context::Configure()
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{
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logic = std::make_shared< Logic >();
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// llarp::LogInfo("loading config at ", configfile);
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if(configfile.size())
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{
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if(!config->Load(configfile.c_str()))
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{
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config.release();
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llarp::LogError("failed to load config file ", configfile);
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return false;
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}
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}
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// System config
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if(!config->system.pidfile.empty())
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{
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SetPIDFile(config->system.pidfile);
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}
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auto threads = config->router.workerThreads();
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if(threads <= 0)
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threads = 1;
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worker = std::make_shared< llarp::thread::ThreadPool >(threads, 1024,
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"llarp-worker");
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nodedb_dir = config->netdb.nodedbDir();
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if(!config->metrics.disableMetrics)
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{
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auto &metricsConfig = config->metrics;
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auto &tags = metricsConfig.metricTags;
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tags["netid"] = config->router.netId();
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tags["nickname"] = config->router.nickname();
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setupMetrics(metricsConfig);
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if(!config->metrics.disableMetricLogs)
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{
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m_metricsManager->instance()->addGlobalPublisher(
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std::make_shared< metrics::StreamPublisher >(std::cerr));
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}
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}
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return true;
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}
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void
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Context::setupMetrics(const MetricsConfig &metricsConfig)
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{
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if(!m_scheduler)
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{
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m_scheduler = std::make_unique< thread::Scheduler >();
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}
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if(!m_metricsManager)
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{
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m_metricsManager = std::make_unique< metrics::DefaultManagerGuard >();
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}
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if(!m_metricsPublisher)
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{
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m_metricsPublisher = std::make_unique< metrics::PublisherScheduler >(
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*m_scheduler, m_metricsManager->instance());
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}
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if(!metricsConfig.jsonMetricsPath.native().empty())
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{
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m_metricsManager->instance()->addGlobalPublisher(
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std::make_shared< metrics::JsonPublisher >(
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std::bind(&metrics::JsonPublisher::directoryPublisher,
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std::placeholders::_1, metricsConfig.jsonMetricsPath)));
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}
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if(!metricsConfig.metricTankHost.empty())
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{
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if(std::getenv("LOKINET_ENABLE_METRIC_TANK"))
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{
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static std::string WARNING = R"(
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__ ___ ____ _ _ ___ _ _ ____
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\ \ / / \ | _ \| \ | |_ _| \ | |/ ___|
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\ \ /\ / / _ \ | |_) | \| || || \| | | _
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\ V V / ___ \| _ <| |\ || || |\ | |_| |
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\_/\_/_/ \_\_| \_\_| \_|___|_| \_|\____|
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This Lokinet session is not private!!
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Sending connection metrics to metrictank!!
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__ ___ ____ _ _ ___ _ _ ____
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\ \ / / \ | _ \| \ | |_ _| \ | |/ ___|
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\ \ /\ / / _ \ | |_) | \| || || \| | | _
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\ V V / ___ \| _ <| |\ || || |\ | |_| |
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\_/\_/_/ \_\_| \_\_| \_|___|_| \_|\____|
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)";
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std::cerr << WARNING << '\n';
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std::pair< std::string, std::string > split =
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absl::StrSplit(metricsConfig.metricTankHost, ':');
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m_metricsManager->instance()->addGlobalPublisher(
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std::make_shared< metrics::MetricTankPublisher >(
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metricsConfig.metricTags, split.first, stoi(split.second)));
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}
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else
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{
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std::cerr << "metrictank host specified, but "
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"LOKINET_ENABLE_METRIC_TANK not set, skipping\n";
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}
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}
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m_metricsPublisher->setDefault(absl::Seconds(30));
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m_scheduler->start();
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}
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void
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Context::SetPIDFile(const std::string &fname)
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{
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pidfile = fname;
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}
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int
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Context::LoadDatabase()
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{
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if(!llarp_nodedb::ensure_dir(nodedb_dir.c_str()))
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{
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llarp::LogError("nodedb_dir is incorrect");
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return 0;
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}
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// llarp::LogInfo("nodedb_dir [", nodedb_dir, "] configured!");
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ssize_t loaded = nodedb->load_dir(nodedb_dir.c_str());
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llarp::LogInfo("nodedb_dir loaded ", loaded, " RCs from [", nodedb_dir,
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"]");
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if(loaded < 0)
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{
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// shouldn't be possible
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llarp::LogError("nodedb_dir directory doesn't exist");
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return 0;
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}
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return 1;
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}
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int
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Context::Setup()
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{
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llarp::LogInfo(LLARP_VERSION, " ", LLARP_RELEASE_MOTTO);
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llarp::LogInfo("starting up");
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mainloop = llarp_make_ev_loop();
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crypto = std::make_unique< sodium::CryptoLibSodium >();
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cryptoManager = std::make_unique< CryptoManager >(crypto.get());
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router = std::make_unique< Router >(worker, mainloop, logic);
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nodedb = std::make_unique< llarp_nodedb >(router->diskworker());
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if(!router->Configure(config.get(), nodedb.get()))
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{
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llarp::LogError("Failed to configure router");
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return 1;
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}
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// must be done after router is made so we can use its disk io worker
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// must also be done after configure so that netid is properly set if it
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// is provided by config
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if(!this->LoadDatabase())
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return 1;
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return 0;
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}
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int
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Context::Run(llarp_main_runtime_opts opts)
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{
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if(router == nullptr)
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{
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// we are not set up so we should die
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llarp::LogError("cannot run non configured context");
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return 1;
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}
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if(!WritePIDFile())
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return 1;
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// run
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if(!router->StartJsonRpc())
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return 1;
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if(!opts.background)
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{
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if(!router->Run())
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return 2;
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}
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// run net io thread
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llarp::LogInfo("running mainloop");
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llarp_ev_loop_run_single_process(mainloop, logic);
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// waits for router graceful stop
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return 0;
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}
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bool
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Context::WritePIDFile() const
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{
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if(pidfile.size())
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{
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std::ofstream f(pidfile);
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f << std::to_string(getpid());
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return f.good();
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}
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return true;
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}
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void
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Context::RemovePIDFile() const
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{
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if(pidfile.size())
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{
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fs::path f = pidfile;
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std::error_code ex;
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if(fs::exists(f, ex))
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{
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if(!ex)
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fs::remove(f);
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}
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}
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}
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void
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Context::HandleSignal(int sig)
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{
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if(sig == SIGINT || sig == SIGTERM)
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{
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SigINT();
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}
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// TODO(despair): implement hot-reloading config on NT
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#ifndef _WIN32
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if(sig == SIGHUP)
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{
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llarp::LogInfo("SIGHUP");
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if(router)
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{
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router->hiddenServiceContext().ForEachService(
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[](const std::string &name,
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const llarp::service::Endpoint_ptr &ep) -> bool {
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ep->ResetInternalState();
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llarp::LogInfo("Reset internal state for ", name);
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return true;
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});
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router->PumpLL();
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Config newconfig;
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if(!newconfig.Load(configfile.c_str()))
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{
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llarp::LogError("failed to load config file ", configfile);
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return;
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}
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// validate config
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if(!router->ValidateConfig(&newconfig))
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{
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llarp::LogWarn("new configuration is invalid");
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return;
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}
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// reconfigure
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if(!router->Reconfigure(&newconfig))
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{
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llarp::LogError("Failed to reconfigure so we will stop.");
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router->Stop();
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return;
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}
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llarp::LogInfo("router reconfigured");
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}
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}
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#endif
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}
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void
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Context::SigINT()
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{
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if(router)
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{
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/// async stop router on sigint
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router->Stop();
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}
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else
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{
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if(logic)
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logic->stop();
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llarp_ev_loop_stop(mainloop);
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Close();
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}
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}
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void
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Context::Close()
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{
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llarp::LogDebug("stop workers");
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if(worker)
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worker->stop();
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llarp::LogDebug("free config");
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config.release();
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llarp::LogDebug("free workers");
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worker.reset();
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llarp::LogDebug("free nodedb");
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nodedb.release();
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llarp::LogDebug("free router");
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router.release();
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llarp::LogDebug("free logic");
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logic.reset();
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RemovePIDFile();
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}
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bool
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Context::LoadConfig(const std::string &fname)
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{
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config = std::make_unique< Config >();
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configfile = fname;
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return Configure();
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}
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} // namespace llarp
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struct llarp_main
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{
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llarp_main(llarp_config *conf);
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~llarp_main() = default;
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std::unique_ptr< llarp::Context > ctx;
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};
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struct llarp_config
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{
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llarp::Config impl;
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llarp_config() = default;
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llarp_config(const llarp_config *other) : impl(other->impl)
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{
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}
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};
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extern "C"
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{
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size_t
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llarp_main_size()
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{
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return sizeof(llarp_main);
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}
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size_t
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llarp_config_size()
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{
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return sizeof(llarp_config);
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}
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struct llarp_config *
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llarp_default_config()
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{
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llarp_config *conf = new llarp_config();
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#ifdef ANDROID
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// put andrid config overrides here
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#endif
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#ifdef IOS
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// put IOS config overrides here
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#endif
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return conf;
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}
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void
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llarp_config_free(struct llarp_config *conf)
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{
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if(conf)
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delete conf;
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}
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struct llarp_main *
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llarp_main_init_from_config(struct llarp_config *conf)
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{
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if(conf == nullptr)
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return nullptr;
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llarp_main *m = new llarp_main(conf);
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if(m->ctx->Configure())
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return m;
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delete m;
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return nullptr;
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}
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bool
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llarp_config_load_file(const char *fname, struct llarp_config **conf)
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{
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llarp_config *c = new llarp_config();
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if(c->impl.Load(fname))
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{
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*conf = c;
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return true;
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}
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delete c;
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*conf = nullptr;
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return false;
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}
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void
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llarp_main_signal(struct llarp_main *ptr, int sig)
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{
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ptr->ctx->logic->queue_func(
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std::bind(&llarp::Context::HandleSignal, ptr->ctx.get(), sig));
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}
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int
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llarp_main_setup(struct llarp_main *ptr)
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{
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return ptr->ctx->Setup();
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}
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int
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llarp_main_run(struct llarp_main *ptr, struct llarp_main_runtime_opts opts)
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{
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return ptr->ctx->Run(opts);
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}
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const char *
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llarp_version()
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{
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return LLARP_VERSION;
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}
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ssize_t
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llarp_vpn_io_readpkt(struct llarp_vpn_pkt_reader *r, unsigned char *dst,
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size_t dstlen)
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{
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if(r == nullptr)
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return -1;
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if(not r->queue.enabled())
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return -1;
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auto pkt = r->queue.popFront();
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ManagedBuffer mbuf = pkt.ConstBuffer();
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const llarp_buffer_t &buf = mbuf;
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if(buf.sz > dstlen || buf.sz == 0)
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return -1;
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std::copy_n(buf.base, buf.sz, dst);
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return buf.sz;
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}
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bool
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llarp_vpn_io_writepkt(struct llarp_vpn_pkt_writer *w, unsigned char *pktbuf,
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size_t pktlen)
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{
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if(pktlen == 0 || pktbuf == nullptr)
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return false;
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if(w == nullptr)
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return false;
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llarp_vpn_pkt_queue::Packet_t pkt;
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llarp_buffer_t buf(pktbuf, pktlen);
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if(not pkt.Load(buf))
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return false;
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return w->queue.pushBack(std::move(pkt))
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== llarp::thread::QueueReturn::Success;
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}
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bool
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llarp_main_inject_vpn_by_name(struct llarp_main *ptr, const char *name,
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struct llarp_vpn_io *io,
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struct llarp_vpn_ifaddr_info info)
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{
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if(name == nullptr || io == nullptr)
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return false;
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if(ptr == nullptr || ptr->ctx == nullptr || ptr->ctx->router == nullptr)
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return false;
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auto ep = ptr->ctx->router->hiddenServiceContext().GetEndpointByName(name);
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return ep && ep->InjectVPN(io, info);
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}
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void
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llarp_vpn_io_close_async(struct llarp_vpn_io *io)
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{
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if(io == nullptr || io->impl == nullptr)
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return;
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static_cast< llarp_vpn_io_impl * >(io->impl)->AsyncClose();
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}
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bool
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llarp_vpn_io_init(struct llarp_main *ptr, struct llarp_vpn_io *io)
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{
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if(io == nullptr || ptr == nullptr)
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return false;
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llarp_vpn_io_impl *impl = new llarp_vpn_io_impl(ptr, io);
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io->impl = impl;
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return true;
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}
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struct llarp_vpn_pkt_writer *
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llarp_vpn_io_packet_writer(struct llarp_vpn_io *io)
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{
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if(io == nullptr || io->impl == nullptr)
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return nullptr;
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llarp_vpn_io_impl *vpn = static_cast< llarp_vpn_io_impl * >(io->impl);
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return &vpn->writer;
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}
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struct llarp_vpn_pkt_reader *
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llarp_vpn_io_packet_reader(struct llarp_vpn_io *io)
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{
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if(io == nullptr || io->impl == nullptr)
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return nullptr;
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llarp_vpn_io_impl *vpn = static_cast< llarp_vpn_io_impl * >(io->impl);
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return &vpn->reader;
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}
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void
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llarp_main_free(struct llarp_main *ptr)
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{
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delete ptr;
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}
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const char *
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llarp_main_get_default_endpoint_name(struct llarp_main *)
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{
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return "default";
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}
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}
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llarp_main::llarp_main(llarp_config *conf)
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: ctx(new llarp::Context())
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{
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ctx->config.reset(new llarp::Config(conf->impl));
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}
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namespace llarp
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{
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Context *
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Context::Get(llarp_main *m)
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{
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if(m == nullptr || m->ctx == nullptr)
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return nullptr;
|
|
return m->ctx.get();
|
|
}
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} // namespace llarp
|