/
helpers.go
172 lines (138 loc) · 3.17 KB
/
helpers.go
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package http
import (
"context"
"errors"
"net/http"
"net/url"
"path/filepath"
"time"
"github.com/anacrolix/torrent"
"github.com/anacrolix/torrent/metainfo"
"github.com/rs/zerolog/log"
"github.com/WinPooh32/peerstohttp/app"
)
var errFileNotFound = errors.New("file not found")
func addNewTorrentHash(ctx context.Context, app *app.App, hash string) (*torrent.Torrent, bool) {
var t, new = app.Client().AddTorrentInfoHash(metainfo.NewHashFromHex(hash))
if t == nil {
return nil, false
}
if new {
app.TrackContext(ctx, t)
}
select {
case <-ctx.Done():
return nil, false
case <-t.GotInfo():
}
return t, true
}
func addNewTorrentMagnet(ctx context.Context, app *app.App, magnetURI string) (*torrent.Torrent, bool) {
var t, err = app.Client().AddMagnet(magnetURI)
if err != nil {
return nil, false
}
if t == nil {
return nil, false
}
app.TrackContext(ctx, t)
select {
case <-ctx.Done():
return nil, false
case <-t.GotInfo():
}
return t, true
}
func serveTorrentDir(w http.ResponseWriter, r *http.Request, t *torrent.Torrent, path string) error {
var err error
//var name string
//
//if path == "" {
// name = t.Name()
//} else {
// name = filepath.Base(path)
//}
//
//w.Header().Set("Content-Disposition", `filename="`+url.PathEscape(name+".zip")+`"`)
//w.Header().Set("Content-Type", "application/zip")
//w.WriteHeader(http.StatusOK)
//
//var reader = t.NewReader()
//defer reader.Close()
//
//// TODO адаптер из файлов торрента
//
//var zipWriter io.WriteCloser
//zipWriter = zip.NewWriter(w)
//
//for _, f := range t.Files() {
//
// header, err := zip.FileInfoHeader(f)
// if err != nil {
// return err
// }
//
//
//}
//
//_, err = io.Copy(zipWriter, reader)
return err
}
func serveTorrentFile(w http.ResponseWriter, r *http.Request, t *torrent.Torrent, path string) error {
var name string
var file *torrent.File
var ok bool
log.Info().Msgf("file path = %s", path)
file, ok = findFile(t, path)
if !ok || file == nil {
return errFileNotFound
}
var reader = file.NewReader()
defer reader.Close()
fip := file.FileInfo().Path
if len(fip) == 0 {
name = file.DisplayPath()
} else if len(fip) == 1 {
name = fip[0]
} else {
name = fip[len(fip)-1]
}
return serveContent(w, r, file.Length(), reader, name)
}
func findFile(t *torrent.Torrent, path string) (*torrent.File, bool) {
var file *torrent.File
if !t.Info().IsDir() {
if filepath.Base(path) != t.Info().Name {
return nil, false
}
file = t.Files()[0]
} else {
for _, f := range t.Files() {
var p = f.Path()
if p == path {
file = f
break
}
}
if file == nil {
return nil, false
}
}
return file, true
}
func serveContent(w http.ResponseWriter, r *http.Request, size int64, reader torrent.Reader, name string) error {
var err error
// Don't wait for pieces to complete and be verified.
reader.SetResponsive()
if size > 0 {
// Read ahead 10% of file.
reader.SetReadahead((size * 10) / 100)
}
w.Header().Set("Content-Disposition", `filename="`+url.PathEscape(name)+`"`)
_, err = reader.Seek(0, 0)
if err != nil {
return err
}
http.ServeContent(w, r, name, time.Now(), reader)
return nil
}