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https://github.com/wonli/aqi.git
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74 lines
1.3 KiB
Go
74 lines
1.3 KiB
Go
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package utils
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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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func Unzip(src, dest string) ([]string, error) {
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r, err := zip.OpenReader(src)
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if err != nil {
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return nil, err
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}
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var unzipFiles []string
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defer func() {
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_ = r.Close()
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}()
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_ = os.MkdirAll(dest, 0755)
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// Closure to address file descriptors issue with all the deferred .Close() methods
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extractAndWriteFile := func(f *zip.File) error {
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rc, err := f.Open()
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if err != nil {
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return err
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}
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defer func() {
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_ = rc.Close()
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}()
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path := filepath.Join(dest, f.Name)
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// Check for ZipSlip (Directory traversal)
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if !strings.HasPrefix(path, filepath.Clean(dest)+string(os.PathSeparator)) {
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return fmt.Errorf("illegal file path: %s", path)
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}
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if f.FileInfo().IsDir() {
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_ = os.MkdirAll(path, f.Mode())
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} else {
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_ = os.MkdirAll(filepath.Dir(path), f.Mode())
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f, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
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if err != nil {
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return err
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}
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defer func() {
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_ = f.Close()
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}()
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_, err = io.Copy(f, rc)
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if err != nil {
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return err
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}
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}
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unzipFiles = append(unzipFiles, path)
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return nil
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}
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for _, f := range r.File {
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err = extractAndWriteFile(f)
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if err != nil {
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return nil, err
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}
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}
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return unzipFiles, nil
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}
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