/*
* This file is part of rockframework.
*
* rockframework 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.
*
* rockframework 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 this program. If not, see <http://www.gnu.org/licenses/>;.
*/
package br.net.woodstock.rockframework.core.utils;
import java.net.InetAddress;
import java.net.UnknownHostException;
import br.net.woodstock.rockframework.core.string.impl.LPadTransformer;
import br.net.woodstock.rockframework.core.util.Assert;
public abstract class Inets {
public static final String IPV4_REGEX = "\\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\b";
private Inets() {
//
}
public static boolean isFromNet(final String address, final String netAddress) throws UnknownHostException {
InetAddress hostAddress = InetAddress.getByName(address);
InetAddress networkAddress = InetAddress.getByName(netAddress.substring(0, netAddress.indexOf('/')));
int mask = Integer.parseInt(netAddress.substring(netAddress.indexOf('/') + 1));
Assert.lessThan(mask, 32, "mask");
StringBuilder bufferAddress = new StringBuilder();
StringBuilder bufferNetwork = new StringBuilder();
for (byte b : hostAddress.getAddress()) {
int i = b;
if (i < 0) {
i += 256;
}
bufferAddress.append(new LPadTransformer(8, '0').transform(Integer.toBinaryString(i)));
}
for (byte b : networkAddress.getAddress()) {
int i = b;
if (i < 0) {
i += 256;
}
bufferAddress.append(new LPadTransformer(8, '0').transform(Integer.toBinaryString(i)));
}
return bufferNetwork.toString().substring(0, mask).equals(bufferAddress.toString().subSequence(0, mask));
}
public static InetAddress toAddress(final String address) throws UnknownHostException {
Assert.matches(address, Inets.IPV4_REGEX, "address");
String[] array = address.split("\\.");
byte b0 = (byte) Integer.parseInt(array[0]);
byte b1 = (byte) Integer.parseInt(array[1]);
byte b2 = (byte) Integer.parseInt(array[2]);
byte b3 = (byte) Integer.parseInt(array[3]);
return InetAddress.getByAddress(new byte[] { b0, b1, b2, b3 });
}
}