org.jboss.netty.handler.ipfilter

Class PatternRule

java.lang.Object

org.jboss.netty.handler.ipfilter.PatternRule

All Implemented Interfaces:

java.lang.Comparable<java.lang.Object>, IpFilterRule, IpSet

public class PatternRule
extends java.lang.Object
implements IpFilterRule, java.lang.Comparable<java.lang.Object>

The Class PatternRule represents an IP filter rule using string patterns.
Rule Syntax:

 Rule ::= [n|i]:address          n stands for computer name, i for ip address
 address ::= <regex> | localhost
 regex is a regular expression with '*' as multi character and '?' as single character wild card
 

Example: allow localhost:
new PatternRule(true, "n:localhost")
Example: allow local lan:
new PatternRule(true, "i:192.168.0.*")
Example: block all
new PatternRule(false, "n:*")

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.regex.Pattern	ipPattern
private boolean	isAllowRule
private boolean	localhost
private static InternalLogger	logger
private java.util.regex.Pattern	namePattern
private java.lang.String	pattern

Constructor Summary

Constructors

Constructor and Description
PatternRule(boolean allow, java.lang.String pattern) Instantiates a new pattern rule.

Method Summary

Modifier and Type	Method and Description
private static java.lang.String	addRule(java.lang.String pattern, java.lang.String rule)
int	compareTo(java.lang.Object o)
boolean	contains(java.net.InetAddress inetAddress) Compares the given InetAddress against the IpSet and returns true if the InetAddress is contained in this Rule and false if not.
java.lang.String	getPattern() returns the pattern.
boolean	isAllowRule()
boolean	isDenyRule()
private static boolean	isLocalhost(java.net.InetAddress address)
private void	parse(java.lang.String pattern)

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final InternalLogger logger

ipPattern

private java.util.regex.Pattern ipPattern

namePattern

private java.util.regex.Pattern namePattern

isAllowRule

private boolean isAllowRule

localhost

private boolean localhost

pattern

private final java.lang.String pattern

Constructor Detail

PatternRule

public PatternRule(boolean allow,
                   java.lang.String pattern)

Instantiates a new pattern rule.

Parameters:

allow - indicates if this is an allow or block rule

pattern - the filter pattern

Method Detail

getPattern

public java.lang.String getPattern()

returns the pattern.

Returns:

the pattern

isAllowRule

public boolean isAllowRule()

Specified by:

isAllowRule in interface IpFilterRule

Returns:

True if this Rule is an ALLOW rule

isDenyRule

public boolean isDenyRule()

Specified by:

isDenyRule in interface IpFilterRule

Returns:

True if this Rule is a DENY rule

contains

public boolean contains(java.net.InetAddress inetAddress)

Description copied from interface: IpSet

Compares the given InetAddress against the IpSet and returns true if the InetAddress is contained in this Rule and false if not.

Specified by:

contains in interface IpSet

Returns:

returns true if the given IP address is contained in the current IpSet.

parse

private void parse(java.lang.String pattern)

addRule

private static java.lang.String addRule(java.lang.String pattern,
                                        java.lang.String rule)

isLocalhost

private static boolean isLocalhost(java.net.InetAddress address)

compareTo

public int compareTo(java.lang.Object o)

Specified by:

compareTo in interface java.lang.Comparable<java.lang.Object>