vn.vnpttech.ssdc.nms.webapp.util.SubnetUtil.java Source code

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Here is the source code for vn.vnpttech.ssdc.nms.webapp.util.SubnetUtil.java

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/*
 * Copyright 2016 Pivotal Software, Inc..
 *
 * Licensed 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 vn.vnpttech.ssdc.nms.webapp.util;

import org.apache.commons.net.util.SubnetUtils;

/**
 *
 * @author KhanhMQ
 */
public class SubnetUtil {

    /**
     * check ip range of two cidr is overlap
     *
     * @param cidr1
     * @param cidr2
     * @return true if overlap, false if not
     */
    public static boolean checkCidrOverlap(String cidr1, String cidr2) {
        SubnetUtils su = new SubnetUtils(cidr1);
        SubnetUtils su2 = new SubnetUtils(cidr2);

        int start1 = su.getInfo().asInteger(su.getInfo().getLowAddress());
        int end1 = su.getInfo().asInteger(su.getInfo().getHighAddress());

        int start2 = su2.getInfo().asInteger(su2.getInfo().getLowAddress());
        int end2 = su2.getInfo().asInteger(su2.getInfo().getHighAddress());

        boolean ret = false;

        if (!((end2 <= start1) && (end1 <= start2))) {
            ret = true;
        } else {
            ret = false;
        }
        return ret;

    }

    /**
     * Check ip range of cidr2 in ip range cidr1
     *
     * @param cidr1
     * @param cidr2
     * @return true if cidr2 in cidr1, false if not
     */
    public static boolean checkCidrInCdir(String cidr1, String cidr2) {
        SubnetUtils su = new SubnetUtils(cidr1);
        SubnetUtils su2 = new SubnetUtils(cidr2);

        System.out.println(su.getInfo().getCidrSignature());

        System.out.println(su.getInfo().getLowAddress());
        System.out.println(su.getInfo().getHighAddress());

        int end1 = su.getInfo().asInteger(su.getInfo().getHighAddress());
        int start1 = su.getInfo().asInteger(su.getInfo().getLowAddress());

        int end2 = su2.getInfo().asInteger(su2.getInfo().getHighAddress());
        int start2 = su2.getInfo().asInteger(su2.getInfo().getLowAddress());

        boolean ret = false;

        if ((start1 <= start2) && (end2 <= end1)) {
            ret = true;
        } else {
            ret = false;
        }
        return ret;

    }

}