org.dspace.authenticate

Class IPMatcher

java.lang.Object

org.dspace.authenticate.IPMatcher

public class IPMatcher
extends Object

Quickly tests whether a given IP address matches an IP range. An IPMatcher is initialized with a particular IP range specification. Calls to match method will then quickly determine whether a given IP falls within that range.

Supported range specifications are:

• Full IPv4 address, e.g. 12.34.56.78
• Full IPv6 address, e.g. 2001:18e8:3:171:218:8bff:fe2a:56a4
• Partial IPv4 address, e.g. 12.34 (which matches any IP starting 12.34)
• IPv4 network/netmask, e.g. 18.25.0.0/255.255.0.0
• IPv4 or IPv6 CIDR slash notation, e.g. 18.25.0.0/16, 2001:18e8:3:171::/64

Version:

$Revision$

Author:

Robert Tansley, Ben Bosman, Roeland Dillen

Constructor Summary

Constructors

Constructor and Description
IPMatcher(String ipSpec) Construct an IPMatcher that will test for the given IP specification

Method Summary

Modifier and Type	Method and Description
boolean	match(String ipIn) Determine whether the given full IP falls within the range this IPMatcher was initialized with.

Methods inherited from class java.lang.Object

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

Constructor Detail

IPMatcher

public IPMatcher(String ipSpec)
          throws IPMatcherException

Construct an IPMatcher that will test for the given IP specification

Parameters:

ipSpec - IP specification (full or partial address, network/netmask, network/cidr)

Throws:

IPMatcherException - if there is an error parsing the specification (i.e. it is somehow malformed)

Method Detail

match

public boolean match(String ipIn)
              throws IPMatcherException

Determine whether the given full IP falls within the range this IPMatcher was initialized with.

Parameters:

ipIn - IP address as dot-delimited String

Returns:

true if the IP matches the range of this IPMatcher; false otherwise

Throws:

IPMatcherException - if the IP passed in cannot be parsed correctly (i.e. is malformed)