org.jboss.netty.handler.ipfilter

Class CIDR

java.lang.Object

org.jboss.netty.handler.ipfilter.CIDR

All Implemented Interfaces:

java.lang.Comparable<CIDR>

Direct Known Subclasses:

CIDR4, CIDR6

public abstract class CIDR
extends java.lang.Object
implements java.lang.Comparable<CIDR>

Field Summary

Fields

Modifier and Type	Field and Description
protected java.net.InetAddress	baseAddress The base address of the CIDR notation
protected int	cidrMask The mask used in the CIDR notation

Constructor Summary

Constructors

Constructor and Description
CIDR()

Method Summary

Modifier and Type	Method and Description
private static java.net.InetAddress	addressStringToInet(java.lang.String addr) Convert an IPv4 or IPv6 textual representation into an InetAddress.
abstract 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.
boolean	equals(java.lang.Object o)
java.net.InetAddress	getBaseAddress()
abstract java.net.InetAddress	getEndAddress()
static byte[]	getIpV4FromIpV6(java.net.Inet6Address address) Compute a byte representation of IpV4 from a IpV6
static byte[]	getIpV6FromIpV4(java.net.Inet4Address address) Compute a byte representation of IpV6 from a IpV4
int	getMask()
private static int	getNetMask(java.lang.String netMask) Get the Subnet's Netmask in Decimal format. i.e.: getNetMask("255.255.255.0") returns the integer CIDR mask
int	hashCode()
static CIDR	newCIDR(java.net.InetAddress baseAddress, int cidrMask) Create CIDR using the CIDR Notation
static CIDR	newCIDR(java.net.InetAddress baseAddress, java.lang.String scidrMask) Create CIDR using the normal Notation
static CIDR	newCIDR(java.lang.String cidr) Create CIDR using the CIDR or normal Notation i.e.: CIDR subnet = newCIDR ("10.10.10.0/24"); or CIDR subnet = newCIDR ("1fff:0:0a88:85a3:0:0:ac1f:8001/24"); or CIDR subnet = newCIDR ("10.10.10.0/255.255.255.0");
private static int	parseInt(java.lang.String intstr, int def)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Comparable

compareTo

Field Detail

baseAddress

protected java.net.InetAddress baseAddress

The base address of the CIDR notation

cidrMask

protected int cidrMask

The mask used in the CIDR notation

Constructor Detail

CIDR

public CIDR()

Method Detail

newCIDR

public static CIDR newCIDR(java.net.InetAddress baseAddress,
                           int cidrMask)
                    throws java.net.UnknownHostException

Create CIDR using the CIDR Notation

Returns:

the generated CIDR

Throws:

java.net.UnknownHostException

newCIDR

public static CIDR newCIDR(java.net.InetAddress baseAddress,
                           java.lang.String scidrMask)
                    throws java.net.UnknownHostException

Create CIDR using the normal Notation

Returns:

the generated CIDR

Throws:

java.net.UnknownHostException

newCIDR

public static CIDR newCIDR(java.lang.String cidr)
                    throws java.net.UnknownHostException

Create CIDR using the CIDR or normal Notation
i.e.: CIDR subnet = newCIDR ("10.10.10.0/24"); or CIDR subnet = newCIDR ("1fff:0:0a88:85a3:0:0:ac1f:8001/24"); or CIDR subnet = newCIDR ("10.10.10.0/255.255.255.0");

Returns:

the generated CIDR

Throws:

java.net.UnknownHostException

getBaseAddress

public java.net.InetAddress getBaseAddress()

Returns:

the baseAddress of the CIDR block.

getMask

public int getMask()

Returns:

the Mask length.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

the textual CIDR notation.

getEndAddress

public abstract java.net.InetAddress getEndAddress()

Returns:

the end address of this block.

contains

public abstract 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.

Returns:

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

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

addressStringToInet

private static java.net.InetAddress addressStringToInet(java.lang.String addr)
                                                 throws java.net.UnknownHostException

Convert an IPv4 or IPv6 textual representation into an InetAddress.

Returns:

the created InetAddress

Throws:

java.net.UnknownHostException

getNetMask

private static int getNetMask(java.lang.String netMask)

Get the Subnet's Netmask in Decimal format.
i.e.: getNetMask("255.255.255.0") returns the integer CIDR mask

Parameters:

netMask - a network mask

Returns:

the integer CIDR mask

parseInt

private static int parseInt(java.lang.String intstr,
                            int def)

Parameters:

intstr - a string containing an integer.

def - the default if the string does not contain a valid integer.

Returns:

the inetAddress from the integer

getIpV4FromIpV6

public static byte[] getIpV4FromIpV6(java.net.Inet6Address address)

Compute a byte representation of IpV4 from a IpV6

Returns:

the byte representation

Throws:

java.lang.IllegalArgumentException - if the IpV6 cannot be mapped to IpV4

getIpV6FromIpV4

public static byte[] getIpV6FromIpV4(java.net.Inet4Address address)

Compute a byte representation of IpV6 from a IpV4

Returns:

the byte representation

Throws:

java.lang.IllegalArgumentException - if the IpV6 cannot be mapped to IpV4