/*
* Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.jmx.snmp;
/**
* Represents an SNMP IpAddress.
*
* <p><b>This API is a Sun Microsystems internal API and is subject
* to change without notice.</b></p>
*/
public class SnmpIpAddress extends SnmpOid {
private static final long serialVersionUID = 7204629998270874474L;
// CONSTRUCTORS
//-------------
/**
* Constructs a new <CODE>SnmpIpAddress</CODE> from the specified bytes array.
* @param bytes The four bytes composing the address.
* @exception IllegalArgumentException The length of the array is not equal to four.
*/
public SnmpIpAddress(byte[] bytes) throws IllegalArgumentException {
buildFromByteArray(bytes);
}
/**
* Constructs a new <CODE>SnmpIpAddress</CODE> from the specified long value.
* @param addr The initialization value.
*/
public SnmpIpAddress(long addr) {
int address = (int)addr ;
byte[] ipaddr = new byte[4];
ipaddr[0] = (byte) ((address >>> 24) & 0xFF);
ipaddr[1] = (byte) ((address >>> 16) & 0xFF);
ipaddr[2] = (byte) ((address >>> 8) & 0xFF);
ipaddr[3] = (byte) (address & 0xFF);
buildFromByteArray(ipaddr);
}
/**
* Constructs a new <CODE>SnmpIpAddress</CODE> from a dot-formatted <CODE>String</CODE>.
* The dot-formatted <CODE>String</CODE> is formulated x.x.x.x .
* @param dotAddress The initialization value.
* @exception IllegalArgumentException The string does not correspond to an ip address.
*/
public SnmpIpAddress(String dotAddress) throws IllegalArgumentException {
super(dotAddress) ;
if ((componentCount > 4) ||
(components[0] > 255) ||
(components[1] > 255) ||
(components[2] > 255) ||
(components[3] > 255)) {
throw new IllegalArgumentException(dotAddress) ;
}
}
/**
* Constructs a new <CODE>SnmpIpAddress</CODE> from four long values.
* @param b1 Byte 1.
* @param b2 Byte 2.
* @param b3 Byte 3.
* @param b4 Byte 4.
* @exception IllegalArgumentException A value is outside of [0-255].
*/
public SnmpIpAddress(long b1, long b2, long b3, long b4) {
super(b1, b2, b3, b4) ;
if ((components[0] > 255) ||
(components[1] > 255) ||
(components[2] > 255) ||
(components[3] > 255)) {
throw new IllegalArgumentException() ;
}
}
// PUBLIC METHODS
//---------------
/**
* Converts the address value to its byte array form.
* @return The byte array representation of the value.
*/
public byte[] byteValue() {
byte[] result = new byte[4] ;
result[0] = (byte)components[0] ;
result[1] = (byte)components[1] ;
result[2] = (byte)components[2] ;
result[3] = (byte)components[3] ;
return result ;
}
/**
* Converts the address to its <CODE>String</CODE> form.
* Same as <CODE>toString()</CODE>. Exists only to follow a naming scheme.
* @return The <CODE>String</CODE> representation of the value.
*/
public String stringValue() {
return toString() ;
}
/**
* Extracts the ip address from an index OID and returns its
* value converted as an <CODE>SnmpOid</CODE>.
* @param index The index array.
* @param start The position in the index array.
* @return The OID representing the ip address value.
* @exception SnmpStatusException There is no ip address value
* available at the start position.
*/
public static SnmpOid toOid(long[] index, int start) throws SnmpStatusException {
if (start + 4 <= index.length) {
try {
return new SnmpOid(
index[start],
index[start+1],
index[start+2],
index[start+3]) ;
}
catch(IllegalArgumentException e) {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
}
else {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
}
/**
* Scans an index OID, skips the address value and returns the position
* of the next value.
* @param index The index array.
* @param start The position in the index array.
* @return The position of the next value.
* @exception SnmpStatusException There is no address value
* available at the start position.
*/
public static int nextOid(long[] index, int start) throws SnmpStatusException {
if (start + 4 <= index.length) {
return start + 4 ;
}
else {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
}
/**
* Appends an <CODE>SnmpOid</CODE> representing an <CODE>SnmpIpAddress</CODE> to another OID.
* @param source An OID representing an <CODE>SnmpIpAddress</CODE> value.
* @param dest Where source should be appended.
*/
public static void appendToOid(SnmpOid source, SnmpOid dest) {
if (source.getLength() != 4) {
throw new IllegalArgumentException() ;
}
dest.append(source) ;
}
/**
* Returns a textual description of the type object.
* @return ASN.1 textual description.
*/
final public String getTypeName() {
return name ;
}
// PRIVATE METHODS
//----------------
/**
* Build Ip address from byte array.
*/
private void buildFromByteArray(byte[] bytes) {
if (bytes.length != 4) {
throw new IllegalArgumentException() ;
}
components = new long[4] ;
componentCount= 4;
components[0] = (bytes[0] >= 0) ? bytes[0] : bytes[0] + 256 ;
components[1] = (bytes[1] >= 0) ? bytes[1] : bytes[1] + 256 ;
components[2] = (bytes[2] >= 0) ? bytes[2] : bytes[2] + 256 ;
components[3] = (bytes[3] >= 0) ? bytes[3] : bytes[3] + 256 ;
}
// VARIABLES
//----------
/**
* Name of the type.
*/
final static String name = "IpAddress" ;
}