org.apache.lenya.net
Class InetAddressUtil

java.lang.Object
  org.apache.lenya.net.InetAddressUtil

public class InetAddressUtil
extends java.lang.Object

A utility class for InetAddress. Also see http://jodies.de/ipcalc

Method Summary

static int	checkNetmask(java.net.InetAddress netmask) Deprecated. This was an internal implementation detail of the method contains(java.net.InetAddress, java.net.InetAddress, java.net.InetAddress) and should never have been made public. Furthermore it's broken for IPv6. (However, there is no real replacement. If you need this functionality, you should rewrite it yourself.)
static boolean	contains(java.net.InetAddress network, java.net.InetAddress netmask, java.net.InetAddress ip) Checks if a subnet contains a specific IP address.
static java.net.InetAddress	getAddress(java.lang.String string) Deprecated. This was an internal implementation detail of the method contains(java.net.InetAddress, java.net.InetAddress, java.net.InetAddress) and should never have been made public. (And it's unnecessary too, as well as broken for IPv6. ;-) Use InetAddress.getByName(string) instead.
static int	getClassPart(java.net.InetAddress ip, int partNumber) Deprecated. This was an internal implementation detail of the method contains(java.net.InetAddress, java.net.InetAddress, java.net.InetAddress) and should never have been made public. (And it's inefficient and unnecessary too, as well as broken for IPv6. ;-) Use ip.getAddress()[partNumber] instead.

Methods inherited from class java.lang.Object

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

Method Detail

contains

public static boolean contains(java.net.InetAddress network,
                               java.net.InetAddress netmask,
                               java.net.InetAddress ip)

Checks if a subnet contains a specific IP address.

Parameters:

network - The network address.

netmask - The subnet mask.

ip - The IP address to check.

Returns:

A boolean value.

getClassPart

public static int getClassPart(java.net.InetAddress ip,
                               int partNumber)

Deprecated. This was an internal implementation detail of the method contains(java.net.InetAddress, java.net.InetAddress, java.net.InetAddress) and should never have been made public. (And it's inefficient and unnecessary too, as well as broken for IPv6. ;-) Use ip.getAddress()[partNumber] instead.

Returns the n-th part of an InetAddress.

Parameters:

ip - The address.

partNumber - The number of the part.

Returns:

An integer value.

checkNetmask

public static int checkNetmask(java.net.InetAddress netmask)

Deprecated. This was an internal implementation detail of the method contains(java.net.InetAddress, java.net.InetAddress, java.net.InetAddress) and should never have been made public. Furthermore it's broken for IPv6. (However, there is no real replacement. If you need this functionality, you should rewrite it yourself.)

Check netmask, e.g. 255.255.255.240 is fine, 255.255.240.16 is illegal (needs to be 255.255.240.0)

Parameters:

netmask - The netmask address.

Returns:

An integer value. -1 if illegal netmask, otherwise 0, 1, 2, 3

getAddress

public static java.net.InetAddress getAddress(java.lang.String string)
                                       throws java.net.UnknownHostException

Deprecated. This was an internal implementation detail of the method contains(java.net.InetAddress, java.net.InetAddress, java.net.InetAddress) and should never have been made public. (And it's unnecessary too, as well as broken for IPv6. ;-) Use InetAddress.getByName(string) instead.

Converts a string to an IP addres.

Parameters:

string - The IP address, represented by a string.

Returns:

An InetAddress object.

Throws:

AccessControlException - when something went wrong.

java.net.UnknownHostException