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132 lines
3.7 KiB
132 lines
3.7 KiB
/*
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* Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package com.sun.jmx.snmp;
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// java imports
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//
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import java.io.Serializable;
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// jmx import
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//
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import com.sun.jmx.snmp.SnmpPduFactory;
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import com.sun.jmx.snmp.SnmpMessage;
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import com.sun.jmx.snmp.SnmpPduPacket;
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import com.sun.jmx.snmp.SnmpPdu;
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import com.sun.jmx.snmp.SnmpMsg;
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import com.sun.jmx.snmp.SnmpStatusException;
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import com.sun.jmx.snmp.SnmpTooBigException;
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import com.sun.jmx.snmp.SnmpDefinitions;
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// SNMP Runtime import
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//
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import com.sun.jmx.snmp.SnmpV3Message;
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/**
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* Default implementation of the {@link com.sun.jmx.snmp.SnmpPduFactory SnmpPduFactory} interface.
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* <BR>It uses the BER (basic encoding rules) standardized encoding scheme associated with ASN.1.
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* <P>
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* This implementation of the <CODE>SnmpPduFactory</CODE> is very
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* basic: it simply calls encoding and decoding methods from
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* {@link com.sun.jmx.snmp.SnmpMsg}.
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* <BLOCKQUOTE>
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* <PRE>
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* public SnmpPdu decodeSnmpPdu(SnmpMsg msg)
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* throws SnmpStatusException {
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* return msg.decodeSnmpPdu() ;
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* }
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*
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* public SnmpMsg encodeSnmpPdu(SnmpPdu pdu, int maxPktSize)
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* throws SnmpStatusException, SnmpTooBigException {
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* SnmpMsg result = new SnmpMessage() ; // for SNMP v1/v2
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* <I>or</I>
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* SnmpMsg result = new SnmpV3Message() ; // for SNMP v3
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* result.encodeSnmpPdu(pdu, maxPktSize) ;
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* return result ;
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* }
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* </PRE>
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* </BLOCKQUOTE>
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* To implement your own object, you can implement <CODE>SnmpPduFactory</CODE>
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* or extend <CODE>SnmpPduFactoryBER</CODE>.
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* <p><b>This API is a Sun Microsystems internal API and is subject
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* to change without notice.</b></p>
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*/
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public class SnmpPduFactoryBER implements SnmpPduFactory, Serializable {
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private static final long serialVersionUID = -3525318344000547635L;
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/**
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* Calls {@link com.sun.jmx.snmp.SnmpMsg#decodeSnmpPdu SnmpMsg.decodeSnmpPdu}
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* on the specified message and returns the resulting <CODE>SnmpPdu</CODE>.
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*
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* @param msg The SNMP message to be decoded.
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* @return The resulting SNMP PDU packet.
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* @exception SnmpStatusException If the encoding is invalid.
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*
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* @since 1.5
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*/
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public SnmpPdu decodeSnmpPdu(SnmpMsg msg) throws SnmpStatusException {
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return msg.decodeSnmpPdu();
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}
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/**
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* Encodes the specified <CODE>SnmpPdu</CODE> and
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* returns the resulting <CODE>SnmpMsg</CODE>. If this
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* method returns null, the specified <CODE>SnmpPdu</CODE>
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* will be dropped and the current SNMP request will be
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* aborted.
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*
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* @param p The <CODE>SnmpPdu</CODE> to be encoded.
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* @param maxDataLength The size limit of the resulting encoding.
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* @return Null or a fully encoded <CODE>SnmpMsg</CODE>.
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* @exception SnmpStatusException If <CODE>pdu</CODE> contains
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* illegal values and cannot be encoded.
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* @exception SnmpTooBigException If the resulting encoding does not
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* fit into <CODE>maxPktSize</CODE> bytes.
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*
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* @since 1.5
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*/
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public SnmpMsg encodeSnmpPdu(SnmpPdu p, int maxDataLength)
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throws SnmpStatusException, SnmpTooBigException {
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switch(p.version) {
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case SnmpDefinitions.snmpVersionOne:
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case SnmpDefinitions.snmpVersionTwo: {
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SnmpMessage result = new SnmpMessage();
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result.encodeSnmpPdu((SnmpPduPacket) p, maxDataLength);
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return result;
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}
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case SnmpDefinitions.snmpVersionThree: {
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SnmpV3Message result = new SnmpV3Message();
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result.encodeSnmpPdu(p, maxDataLength);
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return result;
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}
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default:
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return null;
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}
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}
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}
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