engigu
126 lines
2.1 KiB
Go
126 lines
2.1 KiB
Go
package utils
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import (
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"archive/tar"
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"archive/zip"
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"compress/gzip"
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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 ExtractZip(src, 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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fpath := filepath.Join(dest, f.Name)
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// 安全检查：防止路径遍历
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if !strings.HasPrefix(fpath, filepath.Clean(dest)+string(os.PathSeparator)) {
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continue
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}
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if f.FileInfo().IsDir() {
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os.MkdirAll(fpath, 0755)
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continue
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}
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if err := os.MkdirAll(filepath.Dir(fpath), 0755); err != nil {
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return 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 err
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}
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rc, err := f.Open()
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if err != nil {
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outFile.Close()
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return err
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}
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_, err = io.Copy(outFile, rc)
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outFile.Close()
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rc.Close()
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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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return nil
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}
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func ExtractTar(src, dest string) error {
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file, err := os.Open(src)
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if err != nil {
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return err
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}
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defer file.Close()
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return extractTarReader(tar.NewReader(file), dest)
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}
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func ExtractTarGz(src, dest string) error {
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file, err := os.Open(src)
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if err != nil {
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return err
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}
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defer file.Close()
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gzr, err := gzip.NewReader(file)
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if err != nil {
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return err
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}
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defer gzr.Close()
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return extractTarReader(tar.NewReader(gzr), dest)
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}
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func extractTarReader(tr *tar.Reader, dest string) error {
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for {
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header, err := tr.Next()
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if err == io.EOF {
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break
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}
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if err != nil {
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return err
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}
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fpath := filepath.Join(dest, header.Name)
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// 安全检查：防止路径遍历
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if !strings.HasPrefix(fpath, filepath.Clean(dest)+string(os.PathSeparator)) {
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continue
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}
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switch header.Typeflag {
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case tar.TypeDir:
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os.MkdirAll(fpath, 0755)
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case tar.TypeReg:
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if err := os.MkdirAll(filepath.Dir(fpath), 0755); err != nil {
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return err
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}
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outFile, err := os.Create(fpath)
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if err != nil {
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return err
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}
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if _, err := io.Copy(outFile, tr); err != nil {
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outFile.Close()
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return err
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}
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outFile.Close()
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os.Chmod(fpath, os.FileMode(header.Mode))
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}
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}
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return nil
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}
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