150 lines
3.4 KiB
Go
150 lines
3.4 KiB
Go
// Downloads torrents from the command-line.
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package main
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import (
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"fmt"
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"log"
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"net"
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"net/http"
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"os"
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"strings"
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"time"
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_ "github.com/anacrolix/envpprof"
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"github.com/anacrolix/tagflag"
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"github.com/dustin/go-humanize"
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"github.com/gosuri/uiprogress"
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"github.com/anacrolix/torrent"
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"github.com/anacrolix/torrent/metainfo"
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"github.com/anacrolix/torrent/storage"
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)
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func resolvedPeerAddrs(ss []string) (ret []torrent.Peer, err error) {
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for _, s := range ss {
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var addr *net.TCPAddr
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addr, err = net.ResolveTCPAddr("tcp", s)
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if err != nil {
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return
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}
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ret = append(ret, torrent.Peer{
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IP: addr.IP,
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Port: addr.Port,
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})
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}
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return
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}
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func torrentBar(t *torrent.Torrent) {
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bar := uiprogress.AddBar(1)
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bar.AppendCompleted()
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bar.AppendFunc(func(*uiprogress.Bar) (ret string) {
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select {
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case <-t.GotInfo():
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default:
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return "getting info"
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}
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if t.Seeding() {
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return "seeding"
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} else if t.BytesCompleted() == t.Info().TotalLength() {
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return "completed"
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} else {
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return fmt.Sprintf("downloading (%s/%s)", humanize.Bytes(uint64(t.BytesCompleted())), humanize.Bytes(uint64(t.Info().TotalLength())))
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}
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})
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bar.PrependFunc(func(*uiprogress.Bar) string {
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return t.Name()
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})
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go func() {
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<-t.GotInfo()
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bar.Total = int(t.Info().TotalLength())
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for {
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bc := t.BytesCompleted()
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bar.Set(int(bc))
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time.Sleep(time.Second)
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}
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}()
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}
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func addTorrents(client *torrent.Client) {
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for _, arg := range flags.Torrent {
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t := func() *torrent.Torrent {
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if strings.HasPrefix(arg, "magnet:") {
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t, err := client.AddMagnet(arg)
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if err != nil {
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log.Fatalf("error adding magnet: %s", err)
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}
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return t
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} else {
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metaInfo, err := metainfo.LoadFromFile(arg)
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if err != nil {
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fmt.Fprintf(os.Stderr, "error loading torrent file %q: %s\n", arg, err)
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os.Exit(1)
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}
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t, err := client.AddTorrent(metaInfo)
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if err != nil {
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log.Fatal(err)
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}
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return t
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}
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}()
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torrentBar(t)
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t.AddPeers(func() (ret []torrent.Peer) {
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for _, ta := range flags.TestPeer {
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ret = append(ret, torrent.Peer{
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IP: ta.IP,
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Port: ta.Port,
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})
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}
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return
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}())
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go func() {
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<-t.GotInfo()
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t.DownloadAll()
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}()
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}
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}
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var flags struct {
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Mmap bool `help:"memory-map torrent data"`
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TestPeer []*net.TCPAddr `help:"addresses of some starting peers"`
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Seed bool `help:"seed after download is complete"`
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Addr *net.TCPAddr `help:"network listen addr"`
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tagflag.StartPos
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Torrent []string `arity:"+" help:"torrent file path or magnet uri"`
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}
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func main() {
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log.SetFlags(log.LstdFlags | log.Lshortfile)
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tagflag.Parse(&flags)
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var clientConfig torrent.Config
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if flags.Mmap {
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clientConfig.DefaultStorage = storage.NewMMap("")
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}
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if flags.Addr != nil {
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clientConfig.ListenAddr = flags.Addr.String()
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}
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client, err := torrent.NewClient(&clientConfig)
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if err != nil {
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log.Fatalf("error creating client: %s", err)
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}
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defer client.Close()
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// Write status on the root path on the default HTTP muxer. This will be
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// bound to localhost somewhere if GOPPROF is set, thanks to the envpprof
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// import.
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http.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
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client.WriteStatus(w)
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})
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uiprogress.Start()
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addTorrents(client)
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if client.WaitAll() {
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log.Print("downloaded ALL the torrents")
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} else {
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log.Fatal("y u no complete torrents?!")
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}
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if flags.Seed {
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select {}
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}
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}
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