Function editTree

cmd/sops/edit.go:120–162

(opts editOpts, tree *sops.Tree, dataKey []byte)

}

func editTree(opts editOpts, tree *sops.Tree, dataKey []byte) ([]byte, error) {
	// Create temporary file for editing
	tmpdir, err := os.MkdirTemp("", "")
	if err != nil {
		return nil, common.NewExitError(fmt.Sprintf("Could not create temporary directory: %s", err), codes.CouldNotWriteOutputFile)
	}
	defer os.RemoveAll(tmpdir)

	tmpfile, err := os.Create(filepath.Join(tmpdir, filepath.Base(opts.InputPath)))
	if err != nil {
		return nil, common.NewExitError(fmt.Sprintf("Could not create temporary file: %s", err), codes.CouldNotWriteOutputFile)
	}
	// Ensure that in any case, the temporary file is always closed.
	defer tmpfile.Close()
	// Ensure that the file is read+write for owner only.
	if err = tmpfile.Chmod(0600); err != nil {
		return nil, common.NewExitError(fmt.Sprintf("Could not change permissions of temporary file to read-write for owner only: %s", err), codes.CouldNotWriteOutputFile)
	}

	tmpfileName := tmpfile.Name()

	// Catch when the user presses Ctrl+C, or kills SOPS.
	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGINT, syscall.SIGTERM, syscall.SIGKILL)
	defer stop()

	result := make(chan editTreeResult, 1)

	// This goroutine handles signals that exit SOPS, that usually lead to termination
	// before editTree() can clean up the temporary directory and file.
	go func() {
		<-ctx.Done()
		result <- createError(&cancelError{})
	}()

	// This goroutine handles regular execution of editing.
	go func() {
		result <- editTreeImpl(tmpfile, tmpfileName, opts, tree, dataKey)
	}()

	// Wait until the first result shows up (either an exit is requested, or editTreeImpl returns).
	res := <-result
	return res.value, res.err
}

func editTreeImpl(tmpfile *os.File, tmpfileName string, opts editOpts, tree *sops.Tree, dataKey []byte) editTreeResult {
	// Write to temporary file