edu.internet2.middleware.shibboleth.idp.util

Class IPRange

java.lang.Object

edu.internet2.middleware.shibboleth.idp.util.IPRange

public class IPRange
extends Object

Represents a range of IP addresses.

Field Summary

Fields

Modifier and Type	Field and Description
private int	addressLength Number of bits within
private BitSet	mask The netmask for the range.
private BitSet	network The IP network address for the range.

Constructor Summary

Constructors

Constructor and Description
IPRange(byte[] networkAddress, int maskSize) Constructor
IPRange(InetAddress networkAddress, int maskSize) Constructor

Method Summary

Methods

Modifier and Type	Method and Description
boolean	contains(byte[] address) Determines whether the given address is contained in the IP range.
boolean	contains(InetAddress address) Determines whether the given address is contained in the IP range.
static IPRange	parseCIDRBlock(String cidrBlock) Parses a CIDR block definition in to an IP range.
protected BitSet	toBitSet(byte[] bytes) Converts a byte array to a BitSet.

Methods inherited from class java.lang.Object

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

Field Detail

addressLength

private int addressLength

Number of bits within

network

private BitSet network

The IP network address for the range.

mask

private BitSet mask

The netmask for the range.

Constructor Detail

IPRange

public IPRange(InetAddress networkAddress,
       int maskSize)

Constructor

Parameters:

networkAddress - the network address for the range

maskSize - the number of bits in the netmask

IPRange

public IPRange(byte[] networkAddress,
       int maskSize)

Constructor

Parameters:

networkAddress - the network address for the range

maskSize - the number of bits in the netmask

Method Detail

parseCIDRBlock

public static IPRange parseCIDRBlock(String cidrBlock)

Parses a CIDR block definition in to an IP range.

Parameters:

cidrBlock - the CIDR block definition

Returns:

the resultant IP range

contains

public boolean contains(InetAddress address)

Determines whether the given address is contained in the IP range.

Parameters:

address - the address to check

Returns:

true if the address is in the range, false it not

contains

public boolean contains(byte[] address)

Determines whether the given address is contained in the IP range.

Parameters:

address - the address to check

Returns:

true if the address is in the range, false it not

toBitSet

protected BitSet toBitSet(byte[] bytes)

Converts a byte array to a BitSet. The supplied byte array is assumed to have the most significant bit in element 0.

Parameters:

bytes - the byte array with most significant bit in element 0.

Returns:

the BitSet