mirror of
https://github.com/oxen-io/lokinet.git
synced 2024-10-31 09:20:21 +00:00
550 lines
11 KiB
C++
550 lines
11 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 <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 <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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bool
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Context::CallSafe(std::function< void(void) > f)
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{
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return logic && LogicCall(logic, f);
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}
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bool
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Context::Configure()
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{
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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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auto jobQueueSize = config->router.jobQueueSize();
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if(jobQueueSize < 1024)
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jobQueueSize = 1024;
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logic = std::make_shared< Logic >(jobQueueSize);
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nodedb_dir = config->netdb.nodedbDir();
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return true;
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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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bool
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Context::IsUp() const
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{
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return router && router->IsRunning();
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}
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bool
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Context::LooksAlive() const
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{
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return router && router->LooksAlive();
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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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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_FULL, " ", llarp::RELEASE_MOTTO);
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llarp::LogInfo("starting up");
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mainloop = llarp_make_ev_loop();
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logic->set_event_loop(mainloop.get());
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mainloop->set_logic(logic);
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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(), nodedb_dir);
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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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if(closeWaiter)
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{
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// inform promise if called by CloseAsync
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closeWaiter->set_value();
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}
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return 0;
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}
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void
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Context::CloseAsync()
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{
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/// already closing
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if(closeWaiter)
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return;
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if(CallSafe(std::bind(&Context::HandleSignal, this, SIGTERM)))
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closeWaiter = std::make_unique< std::promise< void > >();
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}
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void
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Context::Wait()
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{
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if(closeWaiter)
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{
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closeWaiter->get_future().wait();
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closeWaiter.reset();
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}
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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_read_file(struct llarp_config *conf, const char *fname)
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{
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if(conf == nullptr)
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return false;
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return conf->impl.Load(fname);
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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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LogicCall(ptr->ctx->logic,
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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_FULL;
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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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void
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llarp_main_stop(struct llarp_main *ptr)
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{
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if(ptr == nullptr)
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return;
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ptr->ctx->CloseAsync();
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ptr->ctx->Wait();
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}
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bool
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llarp_main_configure(struct llarp_main *ptr, struct llarp_config *conf)
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{
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if(ptr == nullptr || conf == nullptr)
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return false;
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// give new config
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ptr->ctx->config.reset(new llarp::Config(conf->impl));
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return ptr->ctx->Configure();
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}
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bool
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llarp_main_is_running(struct llarp_main *ptr)
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{
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return ptr && ptr->ctx->router && ptr->ctx->router->IsRunning();
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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;
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return m->ctx.get();
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}
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} // namespace llarp
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