org.apache.mina.filter.firewall

Class Subnet

java.lang.Object

org.apache.mina.filter.firewall.Subnet

public class Subnet
extends java.lang.Object

A IP subnet using the CIDR notation. Currently, only IP version 4 address are supported.

Field Summary

Fields

Modifier and Type	Field and Description
private static int	BYTE_MASK
private static int	IP_MASK_V4
private static long	IP_MASK_V6
private java.net.InetAddress	subnet
private int	subnetInt An int representation of a subnet for IPV4 addresses
private long	subnetLong An long representation of a subnet for IPV6 addresses
private long	subnetMask
private int	suffix

Constructor Summary

Constructors

Constructor and Description
Subnet(java.net.InetAddress subnet, int mask) Creates a subnet from CIDR notation.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
boolean	inSubnet(java.net.InetAddress address) Checks if the InetAddress is within this subnet
private int	toInt(java.net.InetAddress inetAddress) Converts an IP address into an integer
private long	toLong(java.net.InetAddress inetAddress) Converts an IP address into a long
java.lang.String	toString()
private long	toSubnet(java.net.InetAddress address) Converts an IP address to a subnet using the provided mask

Methods inherited from class java.lang.Object

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

Field Detail

IP_MASK_V4

private static final int IP_MASK_V4

See Also:

Constant Field Values

IP_MASK_V6

private static final long IP_MASK_V6

See Also:

Constant Field Values

BYTE_MASK

private static final int BYTE_MASK

See Also:

Constant Field Values

subnet

private java.net.InetAddress subnet

subnetInt

private int subnetInt

An int representation of a subnet for IPV4 addresses

subnetLong

private long subnetLong

An long representation of a subnet for IPV6 addresses

subnetMask

private long subnetMask

suffix

private int suffix

Constructor Detail

Subnet

public Subnet(java.net.InetAddress subnet,
              int mask)

Creates a subnet from CIDR notation. For example, the subnet 192.168.0.0/24 would be created using the InetAddress 192.168.0.0 and the mask 24.

Parameters:

subnet - The InetAddress of the subnet

mask - The mask

Method Detail

toInt

private int toInt(java.net.InetAddress inetAddress)

Converts an IP address into an integer

toLong

private long toLong(java.net.InetAddress inetAddress)

Converts an IP address into a long

toSubnet

private long toSubnet(java.net.InetAddress address)

Converts an IP address to a subnet using the provided mask

Parameters:

address - The address to convert into a subnet

Returns:

The subnet as an integer

inSubnet

public boolean inSubnet(java.net.InetAddress address)

Checks if the InetAddress is within this subnet

Parameters:

address - The InetAddress to check

Returns:

True if the address is within this subnet, false otherwise

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

Object.toString()

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object