87 lines
1.7 KiB
Go
87 lines
1.7 KiB
Go
package tarutil
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import (
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"archive/tar"
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"io"
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"io/ioutil"
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"os"
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"path/filepath"
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logging "github.com/ipfs/go-log/v2"
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"golang.org/x/xerrors"
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)
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var log = logging.Logger("tarutil") // nolint
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func ExtractTar(body io.Reader, dir string, buf []byte) error {
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if err := os.MkdirAll(dir, 0755); err != nil { // nolint
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return xerrors.Errorf("mkdir: %w", err)
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}
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tr := tar.NewReader(body)
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for {
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header, err := tr.Next()
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switch err {
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default:
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return err
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case io.EOF:
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return nil
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case nil:
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}
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//nolint:gosec
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f, err := os.Create(filepath.Join(dir, header.Name))
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if err != nil {
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//nolint:gosec
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return xerrors.Errorf("creating file %s: %w", filepath.Join(dir, header.Name), err)
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}
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// This data is coming from a trusted source, no need to check the size.
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//nolint:gosec
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if _, err := io.CopyBuffer(f, tr, buf); err != nil {
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return err
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}
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if err := f.Close(); err != nil {
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return err
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}
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}
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}
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func TarDirectory(dir string, w io.Writer, buf []byte) error {
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tw := tar.NewWriter(w)
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files, err := ioutil.ReadDir(dir)
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if err != nil {
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return err
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}
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for _, file := range files {
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h, err := tar.FileInfoHeader(file, "")
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if err != nil {
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return xerrors.Errorf("getting header for file %s: %w", file.Name(), err)
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}
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if err := tw.WriteHeader(h); err != nil {
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return xerrors.Errorf("wiritng header for file %s: %w", file.Name(), err)
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}
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f, err := os.OpenFile(filepath.Join(dir, file.Name()), os.O_RDONLY, 644) // nolint
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if err != nil {
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return xerrors.Errorf("opening %s for reading: %w", file.Name(), err)
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}
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if _, err := io.CopyBuffer(tw, f, buf); err != nil {
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return xerrors.Errorf("copy data for file %s: %w", file.Name(), err)
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}
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if err := f.Close(); err != nil {
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return err
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}
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}
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return nil
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}
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