org.jboss.netty.handler.ipfilter

Class CIDR4

java.lang.Object

org.jboss.netty.handler.ipfilter.CIDR

org.jboss.netty.handler.ipfilter.CIDR4

All Implemented Interfaces:

java.lang.Comparable<CIDR>

public class CIDR4
extends CIDR

Field Summary

Fields

Modifier and Type	Field and Description
private int	addressEndInt The integer for the end address
private int	addressInt The integer for the base address

Fields inherited from class org.jboss.netty.handler.ipfilter.CIDR

baseAddress, cidrMask

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CIDR4(java.net.Inet4Address newaddr, int mask)

Method Summary

Modifier and Type	Method and Description
int	compareTo(CIDR arg)
boolean	contains(java.net.InetAddress inetAddress) Compares the given InetAddress against the CIDR and returns true if the ip is in the subnet-ip-range and false if not.
java.net.InetAddress	getEndAddress()
private static java.net.InetAddress	intToIPv4Address(int addr) Convert an integer into an (IPv4) InetAddress.
private static int	ipv4AddressToInt(byte[] address) Given an IPv4 address as array of bytes, convert it into an integer.
private static int	ipv4AddressToInt(java.net.InetAddress addr) Given an IPv4 address, convert it into an integer.
private static int	ipv4PrefixLengthToLength(int prefixLength) Given an IPv4 baseAddress length, return the block length.
private static int	ipv4PrefixLengthToMask(int prefixLength) Given a baseAddress length, return a netmask.

Methods inherited from class org.jboss.netty.handler.ipfilter.CIDR

equals, getBaseAddress, getIpV4FromIpV6, getIpV6FromIpV4, getMask, hashCode, newCIDR, newCIDR, newCIDR, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

addressInt

private int addressInt

The integer for the base address

addressEndInt

private final int addressEndInt

The integer for the end address

Constructor Detail

CIDR4

protected CIDR4(java.net.Inet4Address newaddr,
                int mask)

Method Detail

getEndAddress

public java.net.InetAddress getEndAddress()

Specified by:

getEndAddress in class CIDR

Returns:

the end address of this block.

compareTo

public int compareTo(CIDR arg)

contains

public boolean contains(java.net.InetAddress inetAddress)

Description copied from class: CIDR

Compares the given InetAddress against the CIDR and returns true if the ip is in the subnet-ip-range and false if not.

Specified by:

contains in class CIDR

Returns:

returns true if the given IP address is inside the currently set network.

ipv4PrefixLengthToLength

private static int ipv4PrefixLengthToLength(int prefixLength)

Given an IPv4 baseAddress length, return the block length. I.e., a baseAddress length of 24 will return 256.

ipv4PrefixLengthToMask

private static int ipv4PrefixLengthToMask(int prefixLength)

Given a baseAddress length, return a netmask. I.e, a baseAddress length of 24 will return 0xFFFFFF00.

intToIPv4Address

private static java.net.InetAddress intToIPv4Address(int addr)
                                              throws java.net.UnknownHostException

Convert an integer into an (IPv4) InetAddress.

Returns:

the created InetAddress

Throws:

java.net.UnknownHostException

ipv4AddressToInt

private static int ipv4AddressToInt(java.net.InetAddress addr)

Given an IPv4 address, convert it into an integer.

Returns:

the integer representation of the InetAddress

Throws:

java.lang.IllegalArgumentException - if the address is really an IPv6 address.

ipv4AddressToInt

private static int ipv4AddressToInt(byte[] address)

Given an IPv4 address as array of bytes, convert it into an integer.

Returns:

the integer representation of the InetAddress

Throws:

java.lang.IllegalArgumentException - if the address is really an IPv6 address.