/*
* @(#)file SnmpParameters.java
* @(#)author Sun Microsystems, Inc.
* @(#)version 4.17
* @(#)date 05/08/26
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
*/
// Copyright (c) 1995-96 by Cisco Systems, Inc.
package com.sun.jmx.snmp ;
import java.io.Serializable;
import java.io.UnsupportedEncodingException;
import com.sun.jmx.snmp.SnmpDefinitions;
import com.sun.jmx.snmp.SnmpStatusException;
/**
* Contains a set of resources that are used by while sending or receiving
* packets to and from an <CODE>SnmpPeer</CODE>. An <CODE>SnmpPeer</CODE> can
* be configured explicitly to use a specific <CODE>SnmpParameter</CODE>.
* A number of <CODE>SnmpPeer</CODE> objects can share a single parameter
* object.
* <P>
* <B>Note</B>: Changing values for an <CODE>SnmpParameter</CODE> object
* affects all <CODE>SnmpPeer</CODE> objects that share the parameter object.
*
* @version 4.17 12/19/03
* @author Sun Microsystems, Inc
* @author Cisco Systems, Inc.
* @see com.sun.jmx.snmp.SnmpPeer
*
* <p><b>This API is a Sun Microsystems internal API and is subject
* to change without notice.</b></p>
*/
public class SnmpParameters extends SnmpParams implements Cloneable, Serializable {
/**
* Creates an <CODE>SnmpParameters</CODE> object with defaults set up.
* By default, <CODE>set</CODE> operations are not allowed, the read community and
* the inform community strings to use is "public" and the SNMP version is V1.
*/
public SnmpParameters() {
_readCommunity = defaultRdCommunity ;
_informCommunity = defaultRdCommunity ;
}
/**
* Creates an <CODE>SnmpParameters</CODE> object.
* This constructor allows the specification of the read/write community strings.
* The inform community string to use is "public".
*
* @param rdc community string to use for <CODE>get</CODE> operations.
* @param wrc community string to use for <CODE>set</CODE> operations.
*/
public SnmpParameters(String rdc, String wrc) {
_readCommunity = rdc ;
_writeCommunity = wrc ;
_informCommunity = defaultRdCommunity ;
}
/**
* Creates an <CODE>SnmpParameters</CODE> object.
* This constructor allows the specification of the read/write/inform community strings.
*
* @param rdc community string to use for <CODE>get</CODE> operations.
* @param wrc community string to use for <CODE>set</CODE> operations.
* @param inform community string to use for <CODE>inform</CODE> requests.
*/
public SnmpParameters(String rdc, String wrc, String inform) {
_readCommunity = rdc ;
_writeCommunity = wrc ;
_informCommunity = inform ;
}
/**
* Gets the community to be used when issuing <CODE>get</CODE> operations.
* @return The community string.
*/
public String getRdCommunity() {
return _readCommunity ;
}
/**
* Sets the community string to use when performing <CODE>get</CODE> operations.
* @param read The community string.
*/
public synchronized void setRdCommunity(String read) {
if (read == null)
_readCommunity = defaultRdCommunity ;
else
_readCommunity = read ;
}
/**
* Gets the community to be used when issuing <CODE>set</CODE> operations.
* @return The community string.
*/
public String getWrCommunity() {
return _writeCommunity ;
}
/**
* Sets the community to be used when issuing <CODE>set</CODE> operations.
* @param write The community string.
*/
public void setWrCommunity(String write) {
_writeCommunity = write;
}
/**
* Gets the community to be used when issuing <CODE>inform</CODE> requests.
* @return The community string.
*/
public String getInformCommunity() {
return _informCommunity ;
}
/**
* Sets the community string to use when performing <CODE>inform</CODE> requests.
* @param inform The community string.
*/
public void setInformCommunity(String inform) {
if (inform == null)
_informCommunity = defaultRdCommunity ;
else
_informCommunity = inform ;
}
/**
* Checks whether parameters are in place for an SNMP <CODE>set</CODE> operation.
* @return <CODE>true</CODE> if parameters are in place, <CODE>false</CODE> otherwise.
*/
public boolean allowSnmpSets() {
return _writeCommunity != null ;
}
/**
* Compares two objects.
* Two <CODE>SnmpParameters</CODE> are equal if they correspond to the same protocol version,
* read community and write community.
* @param obj The object to compare <CODE>this</CODE> with.
* @return <CODE>true</CODE> if <CODE>this</CODE> and the specified object are equal, <CODE>false</CODE> otherwise.
*/
public synchronized boolean equals(Object obj) {
if (!( obj instanceof SnmpParameters))
return false;
if (this == obj)
return true ;
SnmpParameters param = (SnmpParameters) obj ;
if (_protocolVersion == param._protocolVersion)
if (_readCommunity.equals(param._readCommunity))
return true ;
return false ;
}
/**
* Clones the object and its content.
* @return The object clone.
*/
public synchronized Object clone() {
SnmpParameters par = null ;
try {
par = (SnmpParameters) super.clone() ;
//par._retryPolicy = _retryPolicy ;
par._readCommunity = _readCommunity ;
par._writeCommunity = _writeCommunity ;
par._informCommunity = _informCommunity ;
} catch (CloneNotSupportedException e) {
throw new InternalError() ; // VM bug.
}
return par ;
}
/**
* For SNMP Runtime internal use only.
*/
public byte[] encodeAuthentication(int snmpCmd)
throws SnmpStatusException {
//
// Returns the community string associated to the specified command.
//
try {
if (snmpCmd == pduSetRequestPdu)
return _writeCommunity.getBytes("8859_1");
else if (snmpCmd == pduInformRequestPdu)
return _informCommunity.getBytes("8859_1") ;
else
return _readCommunity.getBytes("8859_1") ;
}catch(UnsupportedEncodingException e) {
throw new SnmpStatusException(e.getMessage());
}
}
/**
* Specify the default community string to use for <CODE>get</CODE> operations.
* By default, the value is "public".
*/
final static String defaultRdCommunity = "public" ;
/**
* The protocol version.
* By default, the value is SNMP version 1.
* @serial
*/
private int _protocolVersion = snmpVersionOne ;
/**
* The community to be used when issuing <CODE>get</CODE> operations.
* @serial
*/
private String _readCommunity ;
/**
* The community to be used when issuing <CODE>set</CODE> operations.
* @serial
*/
private String _writeCommunity ;
/**
* The community to be used when issuing <CODE>inform</CODE> requests.
* @serial
*/
private String _informCommunity ;
/**
*/
//private int _retryPolicy ; // not implemented as yet.
}
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