tools

Class GlobalIP

java.lang.Object

tools.GlobalIP

public class GlobalIP
extends java.lang.Object

The class GlobalIP is responsible for obtaining global IP address of the host and checking if lies on in the selected IP range

Author:

Tomasz Bujlow (tbu@es.aau.dk)

Field Summary

Fields

Modifier and Type	Field and Description
private static org.apache.log4j.Logger	log Used to log different events.

Constructor Summary

Constructors

Constructor and Description
GlobalIP() Creates a new instance of the class.

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.String	getGlobalAddress() Finds this computer's global IP address.
private static long	ipToLong(java.net.InetAddress ip) Converts the IP address to a long value, which can be then compared.
static boolean	isIPInRange(java.lang.String ipAddress, java.lang.String lowBorder, java.lang.String highBorder) Checks if the IP address lies within the given range of IP addresses.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

log

private static org.apache.log4j.Logger log

Used to log different events.

Constructor Detail

GlobalIP

public GlobalIP()

Creates a new instance of the class.

Method Detail

getGlobalAddress

public static java.lang.String getGlobalAddress()

Finds this computer's global IP address.

Returns:

the global IP address, or null if a problem occurred

ipToLong

private static long ipToLong(java.net.InetAddress ip)

Converts the IP address to a long value, which can be then compared.

Parameters:

ip - the IP address to be converted

Returns:

IP address converted to the long value

isIPInRange

public static boolean isIPInRange(java.lang.String ipAddress,
                  java.lang.String lowBorder,
                  java.lang.String highBorder)

Checks if the IP address lies within the given range of IP addresses.

Parameters:

ipAddress - IP address to be checked

lowBorder - lower border of the range

highBorder - higher border of the range

Returns:

true if the IP address is within the range, false otherwise