ResponseClassification.java

/*
 * dnssecjava - a DNSSEC validating stub resolver for Java
 * Copyright (c) 2013-2015 Ingo Bauersachs
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * This file is based on work under the following copyright and permission
 * notice:
 * 
 *     Copyright (c) 2005 VeriSign. All rights reserved.
 * 
 *     Redistribution and use in source and binary forms, with or without
 *     modification, are permitted provided that the following conditions are
 *     met:
 * 
 *     1. Redistributions of source code must retain the above copyright
 *        notice, this list of conditions and the following disclaimer.
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 *        products derived from this software without specific prior written
 *        permission.
 * 
 *     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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package org.jitsi.dnssec.validator;

/**
 * These are response subtypes. They are necessary for determining the
 * validation strategy. They have no bearing on the iterative resolution
 * algorithm, so they are confined here.
 */
public enum ResponseClassification {
    /** Not a recognized subtype. */
    UNKNOWN,

    /** A postive, direct, response. */
    POSITIVE,

    /** A postive response, with a CNAME/DNAME chain. */
    CNAME,

    /** A NOERROR/NODATA response. */
    NODATA,

    /** A NXDOMAIN response. */
    NAMEERROR,

    /** A response to a qtype=ANY query. */
    ANY,

    /** A response with CNAMES that points to a non-existing type. */
    CNAME_NODATA,

    /** A response with CNAMES that points into the void. */
    CNAME_NAMEERROR;
}