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