com.hangum.tadpole.commons.util.IPUtil.java Source code

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/*******************************************************************************
 * Copyright (c) 2016 hangum.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v2.1
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     hangum - initial API and implementation
 ******************************************************************************/
package com.hangum.tadpole.commons.util;

import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.chimi.ipfilter.Config;
import org.chimi.ipfilter.IpFilters;

/**
 * IP filter utils
 * 
 * @author hangum
 *
 */
public class IPUtil {
    private static final Logger logger = Logger.getLogger(IPUtil.class);

    /**
     * ip sort
     * 
     * @param ipList
     * @return
     */
    public static List<String> ipSort(List<String> ipList) {

        Collections.sort(ipList, new Comparator<String>() {
            @Override
            public int compare(String o1, String o2) {
                String[] ips1 = o1.split("\\.");
                String updatedIp1 = String.format("%3s.%3s.%3s.%3s", ips1[0], ips1[1], ips1[2], ips1[3]);
                String[] ips2 = o2.split("\\.");
                String updatedIp2 = String.format("%3s.%3s.%3s.%3s", ips2[0], ips2[1], ips2[2], ips2[3]);
                return updatedIp1.compareTo(updatedIp2);
            }
        });

        return ipList;
    }

    /**
     * ip filter
     * 
     * usage : IPUtil.ifFilterString("1.2.*.*,10.10.*", "1.2.1.1")
     * 
     * @param strAllowIP
     * @param strCheckIP
     * @return
     */
    public static boolean ifFilterString(String strAllowIP, String strCheckIP) {
        String[] strArryIP = StringUtils.split(strAllowIP, ",");
        for (String strIP : strArryIP) {
            try {
                Config config = new Config();
                config.setAllowFirst(true);
                config.setDefaultAllow(false);
                config.allow(strIP);

                if (IpFilters.create(config).accept(strCheckIP))
                    return true;
            } catch (Exception e) {
                logger.error("check user ip", e);
            }
        }

        return false;
    }
}