69 lines
1.4 KiB
Go
69 lines
1.4 KiB
Go
package util
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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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)
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// Unzip 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 Unzip(src string, dest string) ([]string, error) {
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var filenames []string
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r, err := zip.OpenReader(src)
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if err != nil {
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return filenames, 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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// Store filename/path for returning and using later on
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fpath := 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(fpath, filepath.Clean(dest)+string(os.PathSeparator)) {
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return filenames, fmt.Errorf("%s: illegal file path", fpath)
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}
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filenames = append(filenames, fpath)
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if f.FileInfo().IsDir() {
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// Make Folder
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os.MkdirAll(fpath, os.ModePerm)
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continue
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}
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// Make File
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if err = os.MkdirAll(filepath.Dir(fpath), os.ModePerm); err != nil {
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return filenames, err
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}
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outFile, err := os.OpenFile(fpath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
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if err != nil {
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return filenames, err
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}
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rc, err := f.Open()
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if err != nil {
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return filenames, err
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}
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_, err = io.Copy(outFile, rc)
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// Close the file without defer to close before next iteration of loop
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outFile.Close()
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rc.Close()
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if err != nil {
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return filenames, err
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}
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}
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return filenames, nil
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}
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