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