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95 lines
2.7 KiB
95 lines
2.7 KiB
/*
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* Copyright (c) 1998, 2007, 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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package com.sun.jmx.snmp;
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/**
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* Defines the interface of the object in charge of encoding and decoding SNMP packets.
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* <P>
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* You will not usually need to use this interface, except if you
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* decide to replace the default implementation <CODE>SnmpPduFactoryBER</CODE>.
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* <P>
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* An <CODE>SnmpPduFactory</CODE> object is attached to an
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* {@link com.sun.jmx.snmp.daemon.SnmpAdaptorServer SNMP protocol adaptor}
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* or an {@link com.sun.jmx.snmp.SnmpPeer SnmpPeer}.
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* It is used each time an SNMP packet needs to be encoded or decoded.
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* <BR>{@link com.sun.jmx.snmp.SnmpPduFactoryBER SnmpPduFactoryBER} is the default
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* implementation.
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* It simply applies the standard ASN.1 encoding and decoding
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* on the bytes of the SNMP packet.
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* <P>
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* It's possible to implement your own <CODE>SnmpPduFactory</CODE>
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* object and to add authentication and/or encryption to the
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* default encoding/decoding process.
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*
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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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* @see SnmpPduFactory
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* @see SnmpPduPacket
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* @see SnmpMessage
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*
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*/
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public interface SnmpPduFactory {
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/**
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* Decodes the specified <CODE>SnmpMsg</CODE> and returns the
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* resulting <CODE>SnmpPdu</CODE>. If this method returns
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* <CODE>null</CODE>, the message will be considered unsafe
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* and will be dropped.
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*
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* @param msg The <CODE>SnmpMsg</CODE> to be decoded.
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* @return Null or a fully initialized <CODE>SnmpPdu</CODE>.
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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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/**
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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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}
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