// updateTUFClient updates the given client, initializing and re-running the
// update if ErrNoRootKeys is returned.
func (u *Updater) updateTUFClient(client *tuf.Client) error {
_, err := client.Update()
if err == nil || tuf.IsLatestSnapshot(err) {
return nil
}
if err == tuf.ErrNoRootKeys {
if err := client.Init(u.rootKeys, len(u.rootKeys)); err != nil {
return err
}
return u.updateTUFClient(client)
}
return err
}
func cmdInit(args *docopt.Args, client *tuf.Client) error {
file := args.String["<root-keys-file>"]
var in io.Reader
if file == "" || file == "-" {
in = os.Stdin
} else {
var err error
in, err = os.Open(file)
if err != nil {
return err
}
}
var rootKeys []*data.Key
if err := json.NewDecoder(in).Decode(&rootKeys); err != nil {
return err
}
return client.Init(rootKeys, len(rootKeys))
}