NetworkUtils.java Source code

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Here is the source code for NetworkUtils.java

Source

/*
 * This file is part of aion-emu <aion-emu.com>.
 *
 * aion-emu is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * aion-emu 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with aion-emu.  If not, see <http://www.gnu.org/licenses/>.
 */
//package com.aionemu.commons.utils;

/**
 * @author KID, -Nemesiss-
 */
public class NetworkUtils {
    /**
     * 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;
    }
}