/*
* @(#)IPAddressAttribute.java
*
* Copyright 2005 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
* ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN")
* AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
* AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
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*
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*/
package com.sun.xacml.attr;
import java.net.InetAddress;
import java.net.URI;
import java.net.UnknownHostException;
import org.w3c.dom.Node;
import com.sun.xacml.ParsingException;
/**
* Represents the IPAddress datatype introduced in XACML 2.0. All objects of this class are
* immutable and all methods of the class are thread-safe.
* <p>
* To create an instance of an ipAddress from an encoded String or a DOM Node you should use the
* <code>getInstance</code> methods provided by this class. To construct an ipAddress instance
* directly, you must use the constructors provided by <code>IPv4AddressAttribute</code> and
* <code>IPv6AddressAttribute</code>. These will both create an attribute of XACML type ipAddress,
* but will handle the differences in these two representations correctly.
*
* @since 2.0
* @author Seth Proctor
*/
public abstract class IPAddressAttribute extends AttributeValue {
/**
* Official name of this type
*/
public static final String identifier = "urn:oasis:names:tc:xacml:2.0:data-type:ipAddress";
/**
* URI version of name for this type
*/
private static final URI identifierURI = URI.create(identifier);
// the required address
private InetAddress address;
// the optional mask
private InetAddress mask;
// this is the optional port-range
private PortRange range;
/**
* Creates the new <code>IPAddressAttribute</code> with all the optional components.
*
* @param address
* a non-null <code>InetAddress</code>
* @param mask
* an <code>InetAddress</code> or null if there is no mask
* @param portRange
* a non-null <code>PortRange</code>
*/
protected IPAddressAttribute(InetAddress address, InetAddress mask, PortRange range) {
super(identifierURI);
this.address = address;
this.mask = mask;
this.range = range;
}
/**
* Returns a new <code>IPAddressAttribute</code> that represents the name at a particular DOM
* node.
*
* @param root
* the <code>Node</code> that contains the desired value
*
* @return a new <code>IPAddressAttribute</code> representing the appropriate value (null if
* there is a parsing error)
*
* @throws ParsingException
* if any of the address components is invalid
*/
public static IPAddressAttribute getInstance(Node root) throws ParsingException {
return getInstance(root.getFirstChild().getNodeValue());
}
/**
* Returns a new <code>IPAddressAttribute</code> that represents the name indicated by the
* <code>String</code> provided.
*
* @param value
* a string representing the address
*
* @return a new <code>IPAddressAttribute</code>
*
* @throws ParsingException
* if any of the address components is invalid
*/
public static IPAddressAttribute getInstance(String value) throws ParsingException {
try {
// an IPv6 address starts with a '['
if (value.indexOf('[') == 0)
return IPv6AddressAttribute.getV6Instance(value);
else
return IPv4AddressAttribute.getV4Instance(value);
} catch (UnknownHostException uhe) {
throw new ParsingException("Failed to parse an IPAddress", uhe);
}
}
/**
* Returns the address represented by this object.
*
* @return the address
*/
public InetAddress getAddress() {
return address;
}
/**
* Returns the mask represented by this object, or null if there is no mask.
*
* @return the mask or null
*/
public InetAddress getMask() {
return mask;
}
/**
* Returns the port range represented by this object which will be unbound if no range was
* specified.
*
* @return the range
*/
public PortRange getRange() {
return range;
}
/**
* Returns true if the input is an instance of this class and if its value equals the value
* contained in this class.
*
* @param o
* the object to compare
*
* @return true if this object and the input represent the same value
*/
public boolean equals(Object o) {
if (!(o instanceof IPAddressAttribute))
return false;
IPAddressAttribute other = (IPAddressAttribute) o;
if (!address.equals(other.address))
return false;
if (mask != null) {
if (other.mask == null)
return false;
if (!mask.equals(other.mask))
return false;
} else {
if (other.mask != null)
return false;
}
if (!range.equals(other.range))
return false;
return true;
}
/**
* Returns the hashcode value used to index and compare this object with others of the same
* type.
*
* @return the object's hashcode value
*/
public int hashCode() {
// added by Mueller Christian
int hash = 1;
hash = hash * 31 + address.hashCode();
hash = hash * 31 + (range== null ? 0 : range.hashCode());
hash = hash * 31 + (mask== null ? 0 : mask.hashCode());
return hash;
}
/**
* Converts to a String representation.
*
* @return the String representation
*/
public String toString() {
return "IPAddressAttribute: \"" + encode() + "\"";
}
}