2018-01-09 00:24:51 +01:00
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package main
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import (
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2019-06-03 16:44:09 +02:00
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crypto_rand "crypto/rand"
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"encoding/binary"
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2018-01-17 11:28:43 +01:00
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"flag"
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"fmt"
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2019-06-03 16:44:09 +02:00
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"math/rand"
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2018-02-28 18:11:48 +01:00
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"os"
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2019-10-23 22:13:23 +02:00
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"os/signal"
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2018-01-09 00:24:51 +01:00
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2018-02-28 18:11:48 +01:00
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"github.com/facebookgo/pidfile"
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2018-01-11 11:50:54 +01:00
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"github.com/jedisct1/dlog"
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2018-01-17 11:28:43 +01:00
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"github.com/kardianos/service"
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2018-01-09 00:24:51 +01:00
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)
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2018-01-29 23:57:20 +01:00
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const (
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2019-10-30 23:02:07 +01:00
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AppVersion = "2.0.30"
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2018-01-31 08:38:22 +01:00
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DefaultConfigFileName = "dnscrypt-proxy.toml"
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2018-01-29 23:57:20 +01:00
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)
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2018-01-18 12:22:25 +01:00
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2018-01-17 10:58:19 +01:00
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type App struct {
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2019-10-09 17:59:46 +02:00
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proxy *Proxy
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2019-10-30 14:34:00 +01:00
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flags *ConfigFlags
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2018-01-17 10:58:19 +01:00
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}
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2018-01-09 13:35:10 +01:00
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func main() {
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2018-01-18 14:25:45 +01:00
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dlog.Init("dnscrypt-proxy", dlog.SeverityNotice, "DAEMON")
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2019-02-17 23:56:02 +01:00
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os.Setenv("GODEBUG", os.Getenv("GODEBUG")+",tls13=1")
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2018-04-03 19:42:27 +02:00
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2019-06-03 16:44:09 +02:00
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seed := make([]byte, 8)
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crypto_rand.Read(seed)
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rand.Seed(int64(binary.LittleEndian.Uint64(seed[:])))
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2018-04-03 20:15:33 +02:00
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pwd, err := os.Getwd()
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2018-04-03 19:42:27 +02:00
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if err != nil {
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2018-04-03 20:15:33 +02:00
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dlog.Fatal("Unable to find the path to the current directory")
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2018-04-03 19:42:27 +02:00
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}
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2018-01-17 11:28:43 +01:00
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svcConfig := &service.Config{
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2018-04-03 20:15:33 +02:00
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Name: "dnscrypt-proxy",
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DisplayName: "DNSCrypt client proxy",
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Description: "Encrypted/authenticated DNS proxy",
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WorkingDirectory: pwd,
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2018-01-17 11:28:43 +01:00
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}
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svcFlag := flag.String("service", "", fmt.Sprintf("Control the system service: %q", service.ControlAction))
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2019-10-30 14:30:31 +01:00
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version := flag.Bool("version", false, "print current proxy version")
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resolve := flag.String("resolve", "", "resolve a name using system libraries")
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flags := ConfigFlags{}
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flags.List = flag.Bool("list", false, "print the list of available resolvers for the enabled filters")
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flags.ListAll = flag.Bool("list-all", false, "print the complete list of available resolvers, ignoring filters")
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flags.JsonOutput = flag.Bool("json", false, "output list as JSON")
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flags.Check = flag.Bool("check", false, "check the configuration file and exit")
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flags.ConfigFile = flag.String("config", DefaultConfigFileName, "Path to the configuration file")
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flags.Child = flag.Bool("child", false, "Invokes program as a child process")
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flags.NetprobeTimeoutOverride = flag.Int("netprobe-timeout", 60, "Override the netprobe timeout")
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flags.ShowCerts = flag.Bool("show-certs", false, "print DoH certificate chain hashes")
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flag.Parse()
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if *version {
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fmt.Println(AppVersion)
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os.Exit(0)
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}
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if resolve != nil && len(*resolve) > 0 {
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Resolve(*resolve)
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os.Exit(0)
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}
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2019-10-23 22:13:23 +02:00
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app := &App{
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2019-10-30 14:34:00 +01:00
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flags: &flags,
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2019-10-23 22:13:23 +02:00
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}
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2018-01-17 11:28:43 +01:00
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svc, err := service.New(app, svcConfig)
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if err != nil {
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2018-01-18 02:07:31 +01:00
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svc = nil
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dlog.Debug(err)
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2018-01-17 10:58:19 +01:00
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}
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2018-02-04 21:13:54 +01:00
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app.proxy = NewProxy()
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2018-07-19 19:03:57 +02:00
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_ = ServiceManagerStartNotify()
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2018-01-17 11:28:43 +01:00
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if len(*svcFlag) != 0 {
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2018-02-20 00:34:06 +01:00
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if svc == nil {
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dlog.Fatal("Built-in service installation is not supported on this platform")
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}
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2018-01-17 11:28:43 +01:00
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if err := service.Control(svc, *svcFlag); err != nil {
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dlog.Fatal(err)
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}
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if *svcFlag == "install" {
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dlog.Notice("Installed as a service. Use `-service start` to start")
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} else if *svcFlag == "uninstall" {
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dlog.Notice("Service uninstalled")
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} else if *svcFlag == "start" {
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dlog.Notice("Service started")
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} else if *svcFlag == "stop" {
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dlog.Notice("Service stopped")
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} else if *svcFlag == "restart" {
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dlog.Notice("Service restarted")
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}
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return
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}
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2018-01-18 02:07:31 +01:00
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if svc != nil {
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if err = svc.Run(); err != nil {
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dlog.Fatal(err)
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}
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} else {
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2019-10-23 22:13:23 +02:00
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app.signalWatch()
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2019-10-30 20:01:37 +01:00
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app.Start(nil)
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2018-01-10 12:01:49 +01:00
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}
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2019-10-31 12:02:20 +01:00
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app.proxy.ConnCloseWait()
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2019-10-23 22:13:23 +02:00
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dlog.Notice("Stopped.")
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2018-01-17 11:28:43 +01:00
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}
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func (app *App) Start(service service.Service) error {
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2019-10-31 14:42:10 +01:00
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go app.appMain()
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2019-10-23 22:13:23 +02:00
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return nil
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}
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func (app *App) Stop(service service.Service) error {
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if pidFilePath := pidfile.GetPidfilePath(); len(pidFilePath) > 1 {
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os.Remove(pidFilePath)
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2018-01-18 02:07:31 +01:00
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}
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2019-10-23 22:13:23 +02:00
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dlog.Notice("Quit signal received...")
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2019-10-31 12:02:20 +01:00
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app.proxy.Stop()
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2018-01-17 10:58:19 +01:00
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return nil
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2018-01-09 00:24:51 +01:00
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}
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2019-10-23 22:13:23 +02:00
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func (app *App) appMain() {
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2019-10-31 14:42:10 +01:00
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if err := ConfigLoad(app.proxy, app.flags); err != nil {
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dlog.Fatal(err)
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}
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if err := app.proxy.InitPluginsGlobals(); err != nil {
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dlog.Fatal(err)
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}
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2018-02-28 18:11:48 +01:00
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pidfile.Write()
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2019-10-31 12:02:20 +01:00
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app.proxy.StartProxy()
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2018-01-18 02:07:31 +01:00
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}
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2019-10-23 22:13:23 +02:00
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func (app *App) signalWatch() {
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quit := make(chan os.Signal, 1)
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2019-10-31 12:07:22 +01:00
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signal.Notify(quit, os.Interrupt, os.Kill)
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2019-10-23 22:13:23 +02:00
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go func() {
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<-quit
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signal.Stop(quit)
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2019-10-31 12:02:20 +01:00
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app.proxy.Stop()
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2019-10-23 22:13:23 +02:00
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}()
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2018-01-14 00:56:46 +01:00
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}
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