IpSubnetFilterRule.java

/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package org.jboss.netty.handler.ipfilter;

import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * Ip V4 and Ip V6 filter rule.<br>
 * <br>
 * Note that mix of IPV4 and IPV6 is allowed but it is not recommended. So it is preferable to not
 * mix IPV4 addresses with IPV6 rules, even if it should work.
 */
public class IpSubnetFilterRule extends IpSubnet implements IpFilterRule {
    /** Is this IpV4Subnet an ALLOW or DENY rule */
    private boolean isAllowRule = true;

    /**
     * Constructor for a ALLOW or DENY ALL
     *
     * @param allow True for ALLOW, False for DENY
     */
    public IpSubnetFilterRule(boolean allow) {
        isAllowRule = allow;
    }

    /** @param allow True for ALLOW, False for DENY */
    public IpSubnetFilterRule(boolean allow, InetAddress inetAddress, int cidrNetMask) throws UnknownHostException {
        super(inetAddress, cidrNetMask);
        isAllowRule = allow;
    }

    /** @param allow True for ALLOW, False for DENY */
    public IpSubnetFilterRule(boolean allow, InetAddress inetAddress, String netMask) throws UnknownHostException {
        super(inetAddress, netMask);
        isAllowRule = allow;
    }

    /** @param allow True for ALLOW, False for DENY */
    public IpSubnetFilterRule(boolean allow, String netAddress) throws UnknownHostException {
        super(netAddress);
        isAllowRule = allow;
    }

    public boolean isAllowRule() {
        return isAllowRule;
    }

    public boolean isDenyRule() {
        return !isAllowRule;
    }

}