mirror of https://github.com/portainer/portainer
70 lines
1.5 KiB
Go
70 lines
1.5 KiB
Go
package archive
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import (
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"archive/zip"
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"fmt"
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"io"
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"os"
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"path/filepath"
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"strings"
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"github.com/pkg/errors"
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)
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// UnzipFile will decompress a zip archive, moving all files and folders
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// within the zip file (parameter 1) to an output directory (parameter 2).
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func UnzipFile(src string, dest string) error {
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r, err := zip.OpenReader(src)
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if err != nil {
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return err
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}
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defer r.Close()
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for _, f := range r.File {
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p := filepath.Join(dest, f.Name)
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// Check for ZipSlip. More Info: http://bit.ly/2MsjAWE
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if !strings.HasPrefix(p, filepath.Clean(dest)+string(os.PathSeparator)) {
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return fmt.Errorf("%s: illegal file path", p)
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}
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if f.FileInfo().IsDir() {
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// Make Folder
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os.MkdirAll(p, os.ModePerm)
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continue
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}
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if err := unzipFile(f, p); 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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func unzipFile(f *zip.File, p string) error {
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// Make File
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if err := os.MkdirAll(filepath.Dir(p), os.ModePerm); err != nil {
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return errors.Wrapf(err, "unzipFile: can't make a path %s", p)
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}
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outFile, err := os.OpenFile(p, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
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if err != nil {
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return errors.Wrapf(err, "unzipFile: can't create file %s", p)
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}
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defer outFile.Close()
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rc, err := f.Open()
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if err != nil {
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return errors.Wrapf(err, "unzipFile: can't open zip file %s in the archive", f.Name)
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}
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defer rc.Close()
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if _, err = io.Copy(outFile, rc); err != nil {
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return errors.Wrapf(err, "unzipFile: can't copy an archived file content")
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}
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return nil
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}
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