Java IP Address Match checkIPMatching(String pattern, String address)

Description

check if IP address match pattern

License

Open Source License

Parameter

Parameter	Description
pattern	*.*.*.* , 192.168.1.0-255 ,
address	- 192.168.1.1<BR> <code>address = 10.2.88.12 pattern = *.*.*.* result: true<BR> address = 10.2.88.12 pattern = * result: true<BR> address = 10.2.88.12 pattern = 10.2.88.12-13 result: true<BR> address = 10.2.88.12 pattern = 10.2.88.13-125 result: false<BR></code>

Return

true if address match pattern

Declaration

public static boolean checkIPMatching(String pattern, String address) 

Method Source Code

//package com.java2s;
/**// w  w w.j  a  va  2s .c  o m
 * This file is part of Aion X Emu <aionxemu.com>
 *
 *  This is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This software is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser Public License
 *  along with this software.  If not, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    /**
     * check if IP address match pattern
     *
     * @param pattern *.*.*.* , 192.168.1.0-255 , *
     * @param address - 192.168.1.1<BR>
     *                <code>address = 10.2.88.12  pattern = *.*.*.*   result: true<BR>
     *                address = 10.2.88.12  pattern = *   result: true<BR>
     *                address = 10.2.88.12  pattern = 10.2.88.12-13   result: true<BR>
     *                address = 10.2.88.12  pattern = 10.2.88.13-125   result: false<BR></code>
     * @return true if address match pattern
     */
    public static boolean checkIPMatching(String pattern, String address) {
        if (pattern.equals("*.*.*.*") || pattern.equals("*"))
            return true;

        String[] mask = pattern.split("\\.");
        String[] ip_address = address.split("\\.");
        for (int i = 0; i < mask.length; i++) {
            if (mask[i].equals("*") || mask[i].equals(ip_address[i]))
                continue;
            else if (mask[i].contains("-")) {
                byte min = Byte.parseByte(mask[i].split("-")[0]);
                byte max = Byte.parseByte(mask[i].split("-")[1]);
                byte ip = Byte.parseByte(ip_address[i]);
                if (ip < min || ip > max)
                    return false;
            } else
                return false;
        }
        return true;
    }
}

Related

1. checkIPv6Match(String ipTemplateList, String ipStr)