stun/src/main/java/de/javawi/jstun/util/Address.java
/*
* This file is part of JSTUN.
*
* Copyright (c) 2005 Thomas King <king@t-king.de> - All rights
* reserved.
*
* This software is licensed under either the GNU Public License (GPL),
* or the Apache 2.0 license. Copies of both license agreements are
* included in this distribution.
*/
package de.javawi.jstun.util;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.StringTokenizer;
public class Address {
int firstOctet;
int secondOctet;
int thirdOctet;
int fourthOctet;
public Address(int... octets) throws UtilityException {
if (octets.length != 4) {
throw new UtilityException("Address is malformed.");
}
for (int octet : octets) {
if (octet < 0 || octet > 255) {
throw new UtilityException("Address is malformed.");
}
}
this.firstOctet = octets[0];
this.secondOctet = octets[1];
this.thirdOctet = octets[2];
this.fourthOctet = octets[3];
}
public Address(String address) throws UtilityException {
StringTokenizer st = new StringTokenizer(address, ".");
if (st.countTokens() != 4) {
throw new UtilityException("4 octets in address string are required.");
}
int i = 0;
while (st.hasMoreTokens()) {
int temp = Integer.parseInt(st.nextToken());
if (temp < 0 || temp > 255) {
throw new UtilityException("Address is in incorrect format.");
}
switch (i) {
case 0:
firstOctet = temp;
++i;
break;
case 1:
secondOctet = temp;
++i;
break;
case 2:
thirdOctet = temp;
++i;
break;
case 3:
fourthOctet = temp;
++i;
break;
}
}
}
public Address(byte[] address) throws UtilityException {
if (address.length < 4) {
throw new UtilityException("4 bytes are required.");
}
firstOctet = Utility.oneByteToInteger(address[0]);
secondOctet = Utility.oneByteToInteger(address[1]);
thirdOctet = Utility.oneByteToInteger(address[2]);
fourthOctet = Utility.oneByteToInteger(address[3]);
}
public String toString() {
return firstOctet + "." + secondOctet + "." + thirdOctet + "." + fourthOctet;
}
public byte[] getBytes() throws UtilityException {
byte[] result = new byte[4];
result[0] = Utility.integerToOneByte(firstOctet);
result[1] = Utility.integerToOneByte(secondOctet);
result[2] = Utility.integerToOneByte(thirdOctet);
result[3] = Utility.integerToOneByte(fourthOctet);
return result;
}
public InetAddress getInetAddress() throws UtilityException, UnknownHostException {
byte[] address = new byte[4];
address[0] = Utility.integerToOneByte(firstOctet);
address[1] = Utility.integerToOneByte(secondOctet);
address[2] = Utility.integerToOneByte(thirdOctet);
address[3] = Utility.integerToOneByte(fourthOctet);
return InetAddress.getByAddress(address);
}
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
try {
byte[] data1 = getBytes();
byte[] data2 = ((Address) obj).getBytes();
return data1[0] == data2[0]
&& data1[1] == data2[1]
&& data1[2] == data2[2]
&& data1[3] == data2[3];
} catch (UtilityException ue) {
return false;
}
}
public int hashCode() {
return (firstOctet << 24) + (secondOctet << 16) + (thirdOctet << 8) + fourthOctet;
}
}