mirror of
https://github.com/oxen-io/lokinet.git
synced 2024-10-31 09:20:21 +00:00
643 lines
18 KiB
C++
643 lines
18 KiB
C++
#include <llarp/config/config.hpp> // for ensure_config
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#include <llarp/constants/version.hpp>
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#include <llarp.hpp>
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#include <llarp/util/lokinet_init.h>
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#include <llarp/util/exceptions.hpp>
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#include <llarp/util/fs.hpp>
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#include <llarp/util/str.hpp>
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#ifdef _WIN32
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#include <llarp/win32/service_manager.hpp>
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#include <dbghelp.h>
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#else
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#include <llarp/util/service_manager.hpp>
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#endif
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#include <csignal>
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#include <cxxopts.hpp>
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#include <string>
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#include <iostream>
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#include <future>
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int
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lokinet_main(int, char**);
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#ifdef _WIN32
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extern "C" LONG FAR PASCAL
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win32_signal_handler(EXCEPTION_POINTERS*);
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extern "C" VOID FAR PASCAL
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win32_daemon_entry(DWORD, LPTSTR*);
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VOID
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insert_description();
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#endif
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static auto logcat = llarp::log::Cat("main");
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std::shared_ptr<llarp::Context> ctx;
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std::promise<int> exit_code;
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void
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handle_signal(int sig)
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{
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llarp::log::info(logcat, "Handling signal {}", sig);
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if (ctx)
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ctx->loop->call([sig] { ctx->HandleSignal(sig); });
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else
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std::cerr << "Received signal " << sig << ", but have no context yet. Ignoring!" << std::endl;
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}
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#ifdef _WIN32
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int
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startWinsock()
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{
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WSADATA wsockd;
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int err;
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err = ::WSAStartup(MAKEWORD(2, 2), &wsockd);
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if (err)
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{
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perror("Failed to start Windows Sockets");
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return err;
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}
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::CreateMutex(nullptr, FALSE, "lokinet_win32_daemon");
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return 0;
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}
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extern "C" BOOL FAR PASCAL
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handle_signal_win32(DWORD fdwCtrlType)
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{
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UNREFERENCED_PARAMETER(fdwCtrlType);
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handle_signal(SIGINT);
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return TRUE; // probably unreachable
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}
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void
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install_win32_daemon()
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{
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SC_HANDLE schSCManager;
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SC_HANDLE schService;
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std::array<char, 1024> szPath{};
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if (!GetModuleFileName(nullptr, szPath.data(), MAX_PATH))
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{
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llarp::LogError("Cannot install service ", GetLastError());
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return;
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}
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// Get a handle to the SCM database.
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schSCManager = OpenSCManager(
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nullptr, // local computer
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nullptr, // ServicesActive database
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SC_MANAGER_ALL_ACCESS); // full access rights
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if (nullptr == schSCManager)
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{
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llarp::LogError("OpenSCManager failed ", GetLastError());
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return;
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}
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// Create the service
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schService = CreateService(
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schSCManager, // SCM database
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strdup("lokinet"), // name of service
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"Lokinet for Windows", // service name to display
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SERVICE_ALL_ACCESS, // desired access
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SERVICE_WIN32_OWN_PROCESS, // service type
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SERVICE_DEMAND_START, // start type
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SERVICE_ERROR_NORMAL, // error control type
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szPath.data(), // path to service's binary
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nullptr, // no load ordering group
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nullptr, // no tag identifier
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nullptr, // no dependencies
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nullptr, // LocalSystem account
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nullptr); // no password
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if (schService == nullptr)
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{
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llarp::LogError("CreateService failed ", GetLastError());
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CloseServiceHandle(schSCManager);
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return;
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}
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else
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llarp::LogInfo("Service installed successfully");
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CloseServiceHandle(schService);
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CloseServiceHandle(schSCManager);
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insert_description();
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}
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VOID
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insert_description()
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{
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SC_HANDLE schSCManager;
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SC_HANDLE schService;
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SERVICE_DESCRIPTION sd;
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LPTSTR szDesc = strdup(
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"LokiNET is a free, open source, private, "
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"decentralized, \"market based sybil resistant\" "
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"and IP based onion routing network");
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// Get a handle to the SCM database.
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schSCManager = OpenSCManager(
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NULL, // local computer
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NULL, // ServicesActive database
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SC_MANAGER_ALL_ACCESS); // full access rights
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if (nullptr == schSCManager)
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{
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llarp::LogError("OpenSCManager failed ", GetLastError());
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return;
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}
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// Get a handle to the service.
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schService = OpenService(
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schSCManager, // SCM database
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"lokinet", // name of service
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SERVICE_CHANGE_CONFIG); // need change config access
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if (schService == nullptr)
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{
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llarp::LogError("OpenService failed ", GetLastError());
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CloseServiceHandle(schSCManager);
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return;
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}
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// Change the service description.
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sd.lpDescription = szDesc;
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if (!ChangeServiceConfig2(
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schService, // handle to service
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SERVICE_CONFIG_DESCRIPTION, // change: description
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&sd)) // new description
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{
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llarp::LogError("ChangeServiceConfig2 failed");
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}
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else
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llarp::LogInfo("Service description updated successfully.");
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CloseServiceHandle(schService);
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CloseServiceHandle(schSCManager);
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}
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void
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uninstall_win32_daemon()
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{
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SC_HANDLE schSCManager;
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SC_HANDLE schService;
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// Get a handle to the SCM database.
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schSCManager = OpenSCManager(
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nullptr, // local computer
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nullptr, // ServicesActive database
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SC_MANAGER_ALL_ACCESS); // full access rights
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if (nullptr == schSCManager)
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{
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llarp::LogError("OpenSCManager failed ", GetLastError());
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return;
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}
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// Get a handle to the service.
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schService = OpenService(
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schSCManager, // SCM database
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"lokinet", // name of service
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0x10000); // need delete access
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if (schService == nullptr)
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{
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llarp::LogError("OpenService failed ", GetLastError());
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CloseServiceHandle(schSCManager);
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return;
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}
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// Delete the service.
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if (!DeleteService(schService))
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{
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llarp::LogError("DeleteService failed ", GetLastError());
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}
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else
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llarp::LogInfo("Service deleted successfully\n");
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CloseServiceHandle(schService);
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CloseServiceHandle(schSCManager);
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}
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#endif
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/// this sets up, configures and runs the main context
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static void
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run_main_context(std::optional<fs::path> confFile, const llarp::RuntimeOptions opts)
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{
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llarp::LogInfo(fmt::format("starting up {} {}", llarp::VERSION_FULL, llarp::RELEASE_MOTTO));
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try
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{
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std::shared_ptr<llarp::Config> conf;
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if (confFile)
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{
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llarp::LogInfo("Using config file: ", *confFile);
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conf = std::make_shared<llarp::Config>(confFile->parent_path());
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}
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else
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{
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conf = std::make_shared<llarp::Config>(llarp::GetDefaultDataDir());
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}
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if (not conf->Load(confFile, opts.isSNode))
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{
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llarp::LogError("failed to parse configuration");
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exit_code.set_value(1);
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return;
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}
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ctx = std::make_shared<llarp::Context>();
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ctx->Configure(std::move(conf));
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signal(SIGINT, handle_signal);
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signal(SIGTERM, handle_signal);
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#ifndef _WIN32
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signal(SIGHUP, handle_signal);
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signal(SIGUSR1, handle_signal);
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#endif
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try
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{
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ctx->Setup(opts);
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}
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catch (llarp::util::bind_socket_error& ex)
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{
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llarp::LogError(fmt::format("{}, is lokinet already running? 🤔", ex.what()));
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exit_code.set_value(1);
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return;
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}
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catch (std::exception& ex)
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{
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llarp::LogError(fmt::format("failed to start up lokinet: {}", ex.what()));
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exit_code.set_value(1);
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return;
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}
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llarp::util::SetThreadName("llarp-mainloop");
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auto result = ctx->Run(opts);
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exit_code.set_value(result);
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}
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catch (std::exception& e)
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{
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llarp::LogError("Fatal: caught exception while running: ", e.what());
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exit_code.set_exception(std::current_exception());
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}
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catch (...)
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{
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llarp::LogError("Fatal: caught non-standard exception while running");
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exit_code.set_exception(std::current_exception());
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}
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}
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#ifdef _WIN32
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/// minidump generation for windows jizz
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/// will make a coredump when there is an unhandled exception
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LONG
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GenerateDump(EXCEPTION_POINTERS* pExceptionPointers)
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{
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const auto flags =
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(MINIDUMP_TYPE)(MiniDumpWithFullMemory | MiniDumpWithFullMemoryInfo | MiniDumpWithHandleData | MiniDumpWithUnloadedModules | MiniDumpWithThreadInfo);
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std::stringstream ss;
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ss << "C:\\ProgramData\\lokinet\\crash-" << llarp::time_now_ms().count() << ".dmp";
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const std::string fname = ss.str();
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HANDLE hDumpFile;
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SYSTEMTIME stLocalTime;
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GetLocalTime(&stLocalTime);
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MINIDUMP_EXCEPTION_INFORMATION ExpParam{};
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hDumpFile = CreateFile(
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fname.c_str(),
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_WRITE | FILE_SHARE_READ,
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0,
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CREATE_ALWAYS,
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0,
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0);
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ExpParam.ExceptionPointers = pExceptionPointers;
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ExpParam.ClientPointers = TRUE;
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MiniDumpWriteDump(
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GetCurrentProcess(), GetCurrentProcessId(), hDumpFile, flags, &ExpParam, NULL, NULL);
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return 1;
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}
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#endif
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int
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main(int argc, char* argv[])
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{
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// Set up a default, stderr logging for very early logging; we'll replace this later once we read
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// the desired log info from config.
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llarp::log::add_sink(llarp::log::Type::Print, "stderr");
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llarp::log::reset_level(llarp::log::Level::info);
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llarp::logRingBuffer = std::make_shared<llarp::log::RingBufferSink>(100);
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llarp::log::add_sink(llarp::logRingBuffer, llarp::log::DEFAULT_PATTERN_MONO);
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#ifndef _WIN32
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return lokinet_main(argc, argv);
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#else
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SERVICE_TABLE_ENTRY DispatchTable[] = {
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{strdup("lokinet"), (LPSERVICE_MAIN_FUNCTION)win32_daemon_entry}, {NULL, NULL}};
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// Try first to run as a service; if this works it fires off to win32_daemon_entry and doesn't
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// return until the service enters STOPPED state.
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if (StartServiceCtrlDispatcher(DispatchTable))
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return 0;
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auto error = GetLastError();
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// We'll get this error if not invoked as a service, which is fine: we can just run directly
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if (error == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT)
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{
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llarp::sys::service_manager->disable();
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return lokinet_main(argc, argv);
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}
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else
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{
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llarp::log::critical(
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logcat, "Error launching service: {}", std::system_category().message(error));
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return 1;
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}
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#endif
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}
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int
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lokinet_main(int argc, char** argv)
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{
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if (auto result = Lokinet_INIT())
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return result;
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llarp::RuntimeOptions opts;
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opts.showBanner = false;
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#ifdef _WIN32
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if (startWinsock())
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return -1;
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SetConsoleCtrlHandler(handle_signal_win32, TRUE);
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#endif
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cxxopts::Options options(
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"lokinet",
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"LokiNET is a free, open source, private, "
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"decentralized, \"market based sybil resistant\" "
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"and IP based onion routing network");
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// clang-format off
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options.add_options()
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#ifdef _WIN32
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("install", "install win32 daemon to SCM", cxxopts::value<bool>())
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("remove", "remove win32 daemon from SCM", cxxopts::value<bool>())
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#endif
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("h,help", "print this help message", cxxopts::value<bool>())
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("version", "print version string", cxxopts::value<bool>())
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("g,generate", "generate default configuration and exit", cxxopts::value<bool>())
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("r,router", "run in routing mode instead of client only mode", cxxopts::value<bool>())
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("f,force", "force writing config even if it already exists", cxxopts::value<bool>())
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("config", "path to lokinet.ini configuration file", cxxopts::value<std::string>())
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;
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// clang-format on
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options.parse_positional("config");
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bool genconfigOnly = false;
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bool overwrite = false;
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std::optional<fs::path> configFile;
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try
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{
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auto result = options.parse(argc, argv);
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if (result.count("help"))
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{
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std::cout << options.help() << std::endl;
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return 0;
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}
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if (result.count("version"))
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{
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std::cout << llarp::VERSION_FULL << std::endl;
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return 0;
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}
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#ifdef _WIN32
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if (result.count("install"))
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{
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install_win32_daemon();
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return 0;
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}
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if (result.count("remove"))
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{
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uninstall_win32_daemon();
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return 0;
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}
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#endif
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if (result.count("generate") > 0)
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{
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genconfigOnly = true;
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}
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if (result.count("router") > 0)
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{
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opts.isSNode = true;
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}
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if (result.count("force") > 0)
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{
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overwrite = true;
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}
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if (result.count("config") > 0)
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{
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auto arg = result["config"].as<std::string>();
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if (!arg.empty())
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{
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configFile = arg;
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}
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}
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}
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catch (const cxxopts::option_not_exists_exception& ex)
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{
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std::cerr << ex.what();
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std::cout << options.help() << std::endl;
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return 1;
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}
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if (configFile.has_value())
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{
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// when we have an explicit filepath
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fs::path basedir = configFile->parent_path();
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if (genconfigOnly)
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{
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try
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{
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llarp::ensureConfig(basedir, *configFile, overwrite, opts.isSNode);
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}
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catch (std::exception& ex)
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{
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llarp::LogError("cannot generate config at ", *configFile, ": ", ex.what());
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return 1;
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}
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}
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else
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{
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try
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{
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if (!fs::exists(*configFile))
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{
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llarp::LogError("Config file not found ", *configFile);
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return 1;
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}
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}
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catch (std::exception& ex)
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{
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llarp::LogError("cannot check if ", *configFile, " exists: ", ex.what());
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return 1;
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}
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}
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}
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else
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{
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try
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{
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llarp::ensureConfig(
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llarp::GetDefaultDataDir(), llarp::GetDefaultConfigPath(), overwrite, opts.isSNode);
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}
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catch (std::exception& ex)
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{
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llarp::LogError("cannot ensure config: ", ex.what());
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return 1;
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}
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configFile = llarp::GetDefaultConfigPath();
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}
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if (genconfigOnly)
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{
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return 0;
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}
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#ifdef _WIN32
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SetUnhandledExceptionFilter(&GenerateDump);
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#endif
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std::thread main_thread{[configFile, opts] { run_main_context(configFile, opts); }};
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auto ftr = exit_code.get_future();
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do
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{
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// do periodic non lokinet related tasks here
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if (ctx and ctx->IsUp() and not ctx->LooksAlive())
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{
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auto deadlock_cat = llarp::log::Cat("deadlock");
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for (const auto& wtf :
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{"you have been visited by the mascott of the deadlocked router.",
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"⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⣀⣴⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣄⠄⠄⠄⠄",
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"⠄⠄⠄⠄⠄⢀⣀⣀⡀⠄⠄⠄⡠⢲⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⡀⠄⠄",
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"⠄⠄⠄⠔⣈⣀⠄⢔⡒⠳⡴⠊⠄⠸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠿⣿⣿⣧⠄⠄",
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"⠄⢜⡴⢑⠖⠊⢐⣤⠞⣩⡇⠄⠄⠄⠙⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣆⠄⠝⠛⠋⠐",
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"⢸⠏⣷⠈⠄⣱⠃⠄⢠⠃⠐⡀⠄⠄⠄⠄⠙⠻⢿⣿⣿⣿⣿⣿⣿⣿⡿⠛⠸⠄⠄⠄⠄",
|
|
"⠈⣅⠞⢁⣿⢸⠘⡄⡆⠄⠄⠈⠢⡀⠄⠄⠄⠄⠄⠄⠉⠙⠛⠛⠛⠉⠉⡀⠄⠡⢀⠄⣀",
|
|
"⠄⠙⡎⣹⢸⠄⠆⢘⠁⠄⠄⠄⢸⠈⠢⢄⡀⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠃⠄⠄⠄⠄⠄",
|
|
"⠄⠄⠑⢿⠈⢆⠘⢼⠄⠄⠄⠄⠸⢐⢾⠄⡘⡏⠲⠆⠠⣤⢤⢤⡤⠄⣖⡇⠄⠄⠄⠄⠄",
|
|
"⣴⣶⣿⣿⣣⣈⣢⣸⠄⠄⠄⠄⡾⣷⣾⣮⣤⡏⠁⠘⠊⢠⣷⣾⡛⡟⠈⠄⠄⠄⠄⠄⠄",
|
|
"⣿⣿⣿⣿⣿⠉⠒⢽⠄⠄⠄⠄⡇⣿⣟⣿⡇⠄⠄⠄⠄⢸⣻⡿⡇⡇⠄⠄⠄⠄⠄⠄⠄",
|
|
"⠻⣿⣿⣿⣿⣄⠰⢼⠄⠄⠄⡄⠁⢻⣍⣯⠃⠄⠄⠄⠄⠈⢿⣻⠃⠈⡆⡄⠄⠄⠄⠄⠄",
|
|
"⠄⠙⠿⠿⠛⣿⣶⣤⡇⠄⠄⢣⠄⠄⠈⠄⢠⠂⠄⠁⠄⡀⠄⠄⣀⠔⢁⠃⠄⠄⠄⠄⠄",
|
|
"⠄⠄⠄⠄⠄⣿⣿⣿⣿⣾⠢⣖⣶⣦⣤⣤⣬⣤⣤⣤⣴⣶⣶⡏⠠⢃⠌⠄⠄⠄⠄⠄⠄",
|
|
"⠄⠄⠄⠄⠄⠿⠿⠟⠛⡹⠉⠛⠛⠿⠿⣿⣿⣿⣿⣿⡿⠂⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄",
|
|
"⠠⠤⠤⠄⠄⣀⠄⠄⠄⠑⠠⣤⣀⣀⣀⡘⣿⠿⠙⠻⡍⢀⡈⠂⠄⠄⠄⠄⠄⠄⠄⠄⠄",
|
|
"⠄⠄⠄⠄⠄⠄⠑⠠⣠⣴⣾⣿⣿⣿⣿⣿⣿⣇⠉⠄⠻⣿⣷⣄⡀⠄⠄⠄⠄⠄⠄⠄⠄",
|
|
"file a bug report now or be cursed with this "
|
|
"annoying image in your syslog for all time."})
|
|
{
|
|
llarp::log::critical(deadlock_cat, wtf);
|
|
llarp::log::flush();
|
|
}
|
|
llarp::sys::service_manager->failed();
|
|
std::abort();
|
|
}
|
|
} while (ftr.wait_for(std::chrono::seconds(1)) != std::future_status::ready);
|
|
|
|
main_thread.join();
|
|
|
|
int code = 0;
|
|
|
|
try
|
|
{
|
|
code = ftr.get();
|
|
}
|
|
catch (const std::exception& e)
|
|
{
|
|
std::cerr << "main thread threw exception: " << e.what() << std::endl;
|
|
code = 1;
|
|
}
|
|
catch (...)
|
|
{
|
|
std::cerr << "main thread threw non-standard exception" << std::endl;
|
|
code = 2;
|
|
}
|
|
|
|
llarp::log::flush();
|
|
llarp::sys::service_manager->stopped();
|
|
if (ctx)
|
|
{
|
|
ctx.reset();
|
|
}
|
|
return code;
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
|
|
VOID FAR PASCAL
|
|
SvcCtrlHandler(DWORD dwCtrl)
|
|
{
|
|
// Handle the requested control code.
|
|
|
|
switch (dwCtrl)
|
|
{
|
|
case SERVICE_CONTROL_STOP:
|
|
// tell service we are stopping
|
|
llarp::log::debug(logcat, "Windows service controller gave SERVICE_CONTROL_STOP");
|
|
llarp::sys::service_manager->system_changed_our_state(llarp::sys::ServiceState::Stopping);
|
|
handle_signal(SIGINT);
|
|
return;
|
|
|
|
case SERVICE_CONTROL_INTERROGATE:
|
|
// report status
|
|
llarp::log::debug(logcat, "Got win32 service interrogate signal");
|
|
llarp::sys::service_manager->report_changed_state();
|
|
return;
|
|
|
|
default:
|
|
llarp::log::debug(logcat, "Got win32 unhandled signal {}", dwCtrl);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// The win32 daemon entry point is where we go when invoked as a windows service; we do the required
|
|
// service dance and then pretend we were invoked via main().
|
|
VOID FAR PASCAL
|
|
win32_daemon_entry(DWORD, LPTSTR* argv)
|
|
{
|
|
// Register the handler function for the service
|
|
auto* svc = dynamic_cast<llarp::sys::SVC_Manager*>(llarp::sys::service_manager);
|
|
svc->handle = RegisterServiceCtrlHandler("lokinet", SvcCtrlHandler);
|
|
|
|
if (svc->handle == nullptr)
|
|
{
|
|
llarp::LogError("failed to register daemon control handler");
|
|
return;
|
|
}
|
|
|
|
// we hard code the args to lokinet_main.
|
|
// we yoink argv[0] (lokinet.exe path) and pass in the new args.
|
|
std::array args = {
|
|
reinterpret_cast<char*>(argv[0]),
|
|
reinterpret_cast<char*>(strdup("c:\\programdata\\lokinet\\lokinet.ini")),
|
|
reinterpret_cast<char*>(0)};
|
|
lokinet_main(args.size() - 1, args.data());
|
|
}
|
|
#endif
|