status-go/vendor/github.com/anacrolix/torrent/storage/file-paths.go

39 lines
1.0 KiB
Go

package storage
import (
"os"
"path/filepath"
"strings"
"github.com/anacrolix/torrent/metainfo"
)
// Determines the filepath to be used for each file in a torrent.
type FilePathMaker func(opts FilePathMakerOpts) string
// Determines the directory for a given torrent within a storage client.
type TorrentDirFilePathMaker func(baseDir string, info *metainfo.Info, infoHash metainfo.Hash) string
// Info passed to a FilePathMaker.
type FilePathMakerOpts struct {
Info *metainfo.Info
File *metainfo.FileInfo
}
// defaultPathMaker just returns the storage client's base directory.
func defaultPathMaker(baseDir string, info *metainfo.Info, infoHash metainfo.Hash) string {
return baseDir
}
func infoHashPathMaker(baseDir string, info *metainfo.Info, infoHash metainfo.Hash) string {
return filepath.Join(baseDir, infoHash.HexString())
}
func isSubFilepath(base, sub string) bool {
rel, err := filepath.Rel(base, sub)
if err != nil {
return false
}
return rel != ".." && !strings.HasPrefix(rel, ".."+string(os.PathSeparator))
}