mirror of https://github.com/restic/restic.git
133 lines
2.2 KiB
Go
133 lines
2.2 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"io"
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"os"
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"path"
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"github.com/fd0/khepri"
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)
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func restore_file(repo *khepri.Repository, node khepri.Node, target string) error {
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fmt.Printf(" restore file %q\n", target)
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rd, err := repo.Get(khepri.TYPE_BLOB, node.Content)
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if err != nil {
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return err
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}
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f, err := os.OpenFile(target, os.O_CREATE|os.O_WRONLY, 0600)
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defer f.Close()
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if err != nil {
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return err
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}
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_, err = io.Copy(f, rd)
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if err != nil {
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return err
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}
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err = f.Chmod(node.Mode)
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if err != nil {
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return err
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}
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err = f.Chown(int(node.User), int(node.Group))
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if err != nil {
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return err
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}
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err = os.Chtimes(target, node.AccessTime, node.ModTime)
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if err != nil {
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return err
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}
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return nil
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}
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func restore_dir(repo *khepri.Repository, id khepri.ID, target string) error {
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fmt.Printf(" restore dir %q\n", target)
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rd, err := repo.Get(khepri.TYPE_REF, id)
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if err != nil {
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return err
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}
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t := khepri.NewTree()
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err = t.Restore(rd)
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if err != nil {
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return err
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}
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for _, node := range t.Nodes {
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name := path.Base(node.Name)
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if name == "." || name == ".." {
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return errors.New("invalid path")
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}
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nodepath := path.Join(target, name)
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if node.Mode.IsDir() {
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err = os.MkdirAll(nodepath, 0700)
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if err != nil {
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return err
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}
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err = os.Chmod(nodepath, node.Mode)
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if err != nil {
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return err
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}
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err = os.Chown(nodepath, int(node.User), int(node.Group))
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if err != nil {
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return err
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}
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err = os.Chtimes(nodepath, node.AccessTime, node.ModTime)
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if err != nil {
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return err
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}
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err = restore_dir(repo, node.Content, nodepath)
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if err != nil {
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return err
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}
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} else {
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err = restore_file(repo, node, nodepath)
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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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}
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return nil
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}
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func commandRestore(repo *khepri.Repository, args []string) error {
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if len(args) != 2 {
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return errors.New("usage: restore ID dir")
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}
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id, err := khepri.ParseID(args[0])
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if err != nil {
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errx(1, "invalid id %q: %v", args[0], err)
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}
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target := args[1]
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err = os.MkdirAll(target, 0700)
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if err != nil {
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return err
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}
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err = restore_dir(repo, id, target)
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if err != nil {
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return err
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}
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fmt.Printf("%q restored to %q\n", id, target)
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return nil
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}
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