cmd/btrtrc/main.go

   1 package main
   2
   3 import (
   4         "bytes"
   5         "flag"
   6         "log"
   7         "net"
   8         "os"
   9         "os/signal"
  10         "strings"
  11         "syscall"
  12
  13         "github.com/anacrolix/dht/v2"
  14         analog "github.com/anacrolix/log"
  15
  16         "github.com/anacrolix/torrent"
  17         "github.com/anacrolix/torrent/storage"
  18 )
  19
  20 const TorrentExt = ".torrent"
  21
  22 func saveTorrent(t *torrent.Torrent) error {
  23         pth := t.InfoHash().HexString() + TorrentExt
  24         if _, err := os.Stat(pth); err == nil {
  25                 return nil
  26         }
  27         var b bytes.Buffer
  28         t.Metainfo().Write(&b)
  29         if err := os.WriteFile(pth, b.Bytes(), 0666); err != nil {
  30                 return err
  31         }
  32         return os.Symlink(pth, t.Name()+TorrentExt)
  33 }
  34
  35 func main() {
  36         log.SetFlags(log.Ldate | log.Ltime)
  37         dhtBoot := flag.String("dht", "dht.cypherpunks.ru:8991", "Comma-separated list of DHT bootstrap nodes")
  38         addr := flag.String("bind", "[::]:6881", "Address to bind to")
  39         pub4 := flag.String("4", "", "External IPv4 address")
  40         pub6 := flag.String("6", "", "External IPv6 address")
  41         debug := flag.Bool("debug", false, "Enable debug messages")
  42         noDHT := flag.Bool("nodht", false, "Disable DHT")
  43         verify := flag.Bool("verify", false, "Force verification of provided torrents")
  44         flag.Parse()
  45
  46         dht.DefaultGlobalBootstrapHostPorts = strings.Split(*dhtBoot, ",")
  47         cc := torrent.NewDefaultClientConfig()
  48         cc.Debug = *debug
  49         cc.DisableAcceptRateLimiting = true
  50         cc.NoDefaultPortForwarding = true
  51         cc.DisableWebtorrent = true
  52         cc.Logger = analog.Default.WithNames("main", "client")
  53         cc.DefaultStorage = storage.NewFileWithCompletion(".", NewBFPieceCompletion())
  54         if *verify {
  55                 doVerify(cc, flag.Args())
  56                 return
  57         }
  58         cc.Seed = true
  59         if *pub4 == "" {
  60                 cc.DisableIPv4 = true
  61         } else {
  62                 cc.PublicIp4 = net.ParseIP(*pub4).To4()
  63         }
  64         if *pub6 == "" {
  65                 cc.DisableIPv6 = true
  66         } else {
  67                 cc.PublicIp6 = net.ParseIP(*pub6).To16()
  68         }
  69         cc.NoDHT = *noDHT
  70         cc.SetListenAddr(*addr)
  71         client, err := torrent.NewClient(cc)
  72         if err != nil {
  73                 log.Fatalln("torrent.NewClient:", err)
  74         }
  75         defer client.Close()
  76
  77         needsShutdown := make(chan os.Signal)
  78         overallStatusCancel := make(chan struct{})
  79         txStatsDumperCancel := make(chan struct{})
  80         signal.Notify(needsShutdown, syscall.SIGTERM, syscall.SIGINT)
  81         go func() {
  82                 <-needsShutdown
  83                 overallStatusCancel <- struct{}{}
  84                 txStatsDumperCancel <- struct{}{}
  85                 client.Close()
  86         }()
  87
  88         fifosPrepare()
  89         log.Println("started", client.PublicIPs())
  90         go overallStatus(client, overallStatusCancel)
  91         go fifoList(client)
  92         go fifoDHTList(client)
  93         go fifoAdd(client)
  94         go fifoDel(client)
  95         go txStatsDumper(client, txStatsDumperCancel)
  96         <-client.Closed()
  97         <-overallStatusCancel
  98         <-txStatsDumperCancel
  99         fifosCleanup()
 100         log.Println("finished")
 101 }