| // Copyright 2015 The Vanadium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package io.v.v23.security; |
| |
| import io.v.v23.context.VContext; |
| import io.v.v23.verror.VException; |
| |
| /** |
| * Validator for {@link Constants#CONST_CAVEAT} caveat, which represents a caveat that either |
| * always validates or never validates. |
| */ |
| public class ConstCaveatValidator implements CaveatValidator { |
| /** |
| * A singleton instance of {@link ConstCaveatValidator}. |
| */ |
| public static final ConstCaveatValidator INSTANCE = new ConstCaveatValidator(); |
| |
| @Override |
| public void validate(VContext context, Call call, Object param) throws VException { |
| if (param == null) param = Boolean.valueOf(false); |
| if (!(param instanceof Boolean)) { |
| throw new VException(String.format( |
| "Caveat param %s of wrong type: want %s", param, Boolean.class)); |
| } |
| if (!(Boolean)param) { |
| throw new VException(String.format("ConstCaveat(%s) failed validation.", param)); |
| } |
| } |
| |
| private ConstCaveatValidator() {} |
| } |