| author | sherman |
| Tue, 30 Aug 2011 11:53:11 -0700 | |
| changeset 10419 | 12c063b39232 |
| parent 5506 | 202f599c92aa |
| child 14342 | 8435a30053c1 |
| permissions | -rw-r--r-- |
| 2 | 1 |
/* |
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* Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.sun.jmx.snmp.daemon; |
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// java import |
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// |
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import java.util.Vector; |
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import java.util.Enumeration; |
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import java.util.Hashtable; |
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import java.util.logging.Level; |
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import java.io.InterruptedIOException; |
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import java.net.DatagramSocket; |
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import java.net.DatagramPacket; |
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import java.net.SocketException; |
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// jmx imports |
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// |
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import javax.management.MBeanServer; |
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import javax.management.ObjectName; |
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import com.sun.jmx.snmp.SnmpMessage; |
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import com.sun.jmx.snmp.SnmpPduFactory; |
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import com.sun.jmx.snmp.SnmpPduBulk; |
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import com.sun.jmx.snmp.SnmpPduPacket; |
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import com.sun.jmx.snmp.SnmpPduRequest; |
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import com.sun.jmx.snmp.SnmpPduTrap; |
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import com.sun.jmx.snmp.SnmpValue; |
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import com.sun.jmx.snmp.SnmpVarBind; |
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import com.sun.jmx.snmp.SnmpVarBindList; |
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import com.sun.jmx.snmp.SnmpDefinitions; |
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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.SnmpDataTypeEnums; |
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// RI imports |
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// |
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import static com.sun.jmx.defaults.JmxProperties.SNMP_ADAPTOR_LOGGER; |
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// SNMP runtime import |
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// |
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import com.sun.jmx.snmp.agent.SnmpMibAgent; |
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import com.sun.jmx.snmp.agent.SnmpUserDataFactory; |
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//import com.sun.jmx.snmp.IPAcl.IPAcl; |
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import com.sun.jmx.snmp.InetAddressAcl; |
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class SnmpRequestHandler extends ClientHandler implements SnmpDefinitions {
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private transient DatagramSocket socket = null ; |
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private transient DatagramPacket packet = null ; |
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private transient Vector mibs = null ; |
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/** |
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* Contains the list of sub-requests associated to the current request. |
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*/ |
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private transient Hashtable<SnmpMibAgent, SnmpSubRequestHandler> subs = null; |
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/** |
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* Reference on the MIBS |
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*/ |
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private transient SnmpMibTree root; |
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private transient Object ipacl = null ; |
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private transient SnmpPduFactory pduFactory = null ; |
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private transient SnmpUserDataFactory userDataFactory = null ; |
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private transient SnmpAdaptorServer adaptor = null; |
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/** |
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* Full constructor |
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*/ |
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public SnmpRequestHandler(SnmpAdaptorServer server, int id, |
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DatagramSocket s, DatagramPacket p, |
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SnmpMibTree tree, Vector m, Object a, |
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SnmpPduFactory factory, |
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SnmpUserDataFactory dataFactory, |
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MBeanServer f, ObjectName n) |
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{
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super(server, id, f, n); |
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// Need a reference on SnmpAdaptorServer for getNext & getBulk, |
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// in case of oid equality (mib overlapping). |
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// |
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adaptor = server; |
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socket = s; |
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packet = p; |
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root= tree; |
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mibs = (Vector) m.clone(); |
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subs= new Hashtable<SnmpMibAgent, SnmpSubRequestHandler>(mibs.size()); |
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ipacl = a; |
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pduFactory = factory ; |
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userDataFactory = dataFactory ; |
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//thread.start(); |
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} |
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/** |
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* Treat the request available in 'packet' and send the result |
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* back to the client. |
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* Note: we overwrite 'packet' with the response bytes. |
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*/ |
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public void doRun() {
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// Trace the input packet |
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// |
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINER, dbgTag, |
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"doRun","Packet received:\n" + |
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SnmpMessage.dumpHexBuffer(packet.getData(), 0, packet.getLength())); |
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} |
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// Let's build the response packet |
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// |
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DatagramPacket respPacket = makeResponsePacket(packet) ; |
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// Trace the output packet |
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// |
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if ((SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) && (respPacket != null)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINER, dbgTag, |
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"doRun","Packet to be sent:\n" + |
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SnmpMessage.dumpHexBuffer(respPacket.getData(), 0, respPacket.getLength())); |
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} |
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// Send the response packet if any |
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// |
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if (respPacket != null) {
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try {
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socket.send(respPacket) ; |
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} catch (SocketException e) {
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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if (e.getMessage().equals(InterruptSysCallMsg)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"doRun", "interrupted"); |
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} else {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"doRun", "I/O exception", e); |
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} |
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} |
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} catch(InterruptedIOException e) {
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"doRun", "interrupted"); |
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} |
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} catch(Exception e) {
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"doRun", "failure when sending response", e); |
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} |
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} |
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} |
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} |
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/** |
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* Here we make a response packet from a request packet. |
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* We return null if there no response packet to sent. |
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*/ |
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private DatagramPacket makeResponsePacket(DatagramPacket reqPacket) {
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DatagramPacket respPacket = null ; |
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// Transform the request packet into a request SnmpMessage |
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// |
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SnmpMessage reqMsg = new SnmpMessage() ; |
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try {
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reqMsg.decodeMessage(reqPacket.getData(), reqPacket.getLength()) ; |
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reqMsg.address = reqPacket.getAddress() ; |
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reqMsg.port = reqPacket.getPort() ; |
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} |
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catch(SnmpStatusException x) {
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponsePacket", "packet decoding failed", x); |
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} |
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reqMsg = null ; |
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((SnmpAdaptorServer)adaptorServer).incSnmpInASNParseErrs(1) ; |
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} |
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// Make the response SnmpMessage if any |
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// |
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SnmpMessage respMsg = null ; |
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if (reqMsg != null) {
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respMsg = makeResponseMessage(reqMsg) ; |
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} |
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// Try to transform the response SnmpMessage into response packet. |
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// NOTE: we overwrite the request packet. |
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// |
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if (respMsg != null) {
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try {
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reqPacket.setLength(respMsg.encodeMessage(reqPacket.getData())) ; |
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respPacket = reqPacket ; |
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} |
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catch(SnmpTooBigException x) {
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponsePacket", "response message is too big"); |
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} |
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try {
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respMsg = newTooBigMessage(reqMsg) ; |
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reqPacket.setLength(respMsg.encodeMessage(reqPacket.getData())) ; |
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respPacket = reqPacket ; |
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} |
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catch(SnmpTooBigException xx) {
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponsePacket", "'too big' is 'too big' !!!"); |
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} |
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adaptor.incSnmpSilentDrops(1); |
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} |
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} |
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} |
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return respPacket ; |
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} |
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/** |
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* Here we make a response message from a request message. |
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* We return null if there is no message to reply. |
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*/ |
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private SnmpMessage makeResponseMessage(SnmpMessage reqMsg) {
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SnmpMessage respMsg = null ; |
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// Transform the request message into a request pdu |
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// |
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SnmpPduPacket reqPdu = null ; |
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Object userData = null; |
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try {
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reqPdu = (SnmpPduPacket)pduFactory.decodeSnmpPdu(reqMsg) ; |
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if (reqPdu != null && userDataFactory != null) |
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userData = userDataFactory.allocateUserData(reqPdu); |
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} |
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catch(SnmpStatusException x) {
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reqPdu = null ; |
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SnmpAdaptorServer snmpServer = (SnmpAdaptorServer)adaptorServer ; |
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snmpServer.incSnmpInASNParseErrs(1) ; |
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if (x.getStatus()== SnmpDefinitions.snmpWrongSnmpVersion) |
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snmpServer.incSnmpInBadVersions(1) ; |
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponseMessage", "message decoding failed", x); |
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} |
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} |
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// Make the response pdu if any |
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// |
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SnmpPduPacket respPdu = null ; |
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if (reqPdu != null) {
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respPdu = makeResponsePdu(reqPdu,userData) ; |
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try {
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if (userDataFactory != null) |
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userDataFactory.releaseUserData(userData,respPdu); |
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} catch (SnmpStatusException x) {
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respPdu = null; |
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} |
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} |
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// Try to transform the response pdu into a response message if any |
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// |
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if (respPdu != null) {
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try {
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respMsg = (SnmpMessage)pduFactory. |
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encodeSnmpPdu(respPdu, packet.getData().length) ; |
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} |
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catch(SnmpStatusException x) {
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respMsg = null ; |
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponseMessage", "failure when encoding the response message", x); |
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} |
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} |
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catch(SnmpTooBigException x) {
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponseMessage", "response message is too big"); |
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} |
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try {
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// if the PDU is too small, why should we try to do |
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// recovery ? |
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// |
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if (packet.getData().length <=32) |
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throw x; |
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int pos= x.getVarBindCount(); |
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponseMessage", "fail on element" + pos); |
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} |
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int old= 0; |
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while (true) {
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try {
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respPdu = reduceResponsePdu(reqPdu, respPdu, pos) ; |
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respMsg = (SnmpMessage)pduFactory. |
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encodeSnmpPdu(respPdu, |
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packet.getData().length -32) ; |
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break; |
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} catch (SnmpTooBigException xx) {
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponseMessage", "response message is still too big"); |
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} |
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old= pos; |
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pos= xx.getVarBindCount(); |
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponseMessage","fail on element" + pos); |
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} |
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if (pos == old) {
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// we can not go any further in trying to |
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// reduce the message ! |
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// |
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throw xx; |
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} |
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} |
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}// end of loop |
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} catch(SnmpStatusException xx) {
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respMsg = null ; |
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponseMessage", "failure when encoding the response message", xx); |
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} |
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} |
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catch(SnmpTooBigException xx) {
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try {
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respPdu = newTooBigPdu(reqPdu) ; |
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respMsg = (SnmpMessage)pduFactory. |
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encodeSnmpPdu(respPdu, packet.getData().length) ; |
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} |
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349 |
catch(SnmpTooBigException xxx) {
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respMsg = null ; |
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if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponseMessage", "'too big' is 'too big' !!!"); |
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} |
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adaptor.incSnmpSilentDrops(1); |
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} |
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357 |
catch(Exception xxx) {
|
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358 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
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359 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponseMessage", "Got unexpected exception", xxx); |
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361 |
} |
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362 |
respMsg = null ; |
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363 |
} |
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364 |
} |
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365 |
catch(Exception xx) {
|
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366 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
|
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367 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
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"makeResponseMessage", "Got unexpected exception", xx); |
|
369 |
} |
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370 |
respMsg = null ; |
|
371 |
} |
|
372 |
} |
|
373 |
} |
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374 |
return respMsg ; |
|
375 |
} |
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376 |
||
377 |
/** |
|
378 |
* Here we make a response pdu from a request pdu. |
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379 |
* We return null if there is no pdu to reply. |
|
380 |
*/ |
|
381 |
private SnmpPduPacket makeResponsePdu(SnmpPduPacket reqPdu, |
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382 |
Object userData) {
|
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383 |
||
384 |
SnmpAdaptorServer snmpServer = (SnmpAdaptorServer)adaptorServer ; |
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385 |
SnmpPduPacket respPdu = null ; |
|
386 |
||
387 |
snmpServer.updateRequestCounters(reqPdu.type) ; |
|
388 |
if (reqPdu.varBindList != null) |
|
389 |
snmpServer.updateVarCounters(reqPdu.type, |
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390 |
reqPdu.varBindList.length) ; |
|
391 |
||
392 |
if (checkPduType(reqPdu)) {
|
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393 |
respPdu = checkAcl(reqPdu) ; |
|
394 |
if (respPdu == null) { // reqPdu is accepted by ACLs
|
|
395 |
if (mibs.size() < 1) {
|
|
396 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
|
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397 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINER, dbgTag, |
|
398 |
"makeResponsePdu", "Request " + reqPdu.requestId + |
|
399 |
" received but no MIB registered."); |
|
400 |
} |
|
401 |
return makeNoMibErrorPdu((SnmpPduRequest)reqPdu, userData); |
|
402 |
} |
|
403 |
switch(reqPdu.type) {
|
|
404 |
case SnmpPduPacket.pduGetRequestPdu: |
|
405 |
case SnmpPduPacket.pduGetNextRequestPdu: |
|
406 |
case SnmpPduPacket.pduSetRequestPdu: |
|
407 |
respPdu = makeGetSetResponsePdu((SnmpPduRequest)reqPdu, |
|
408 |
userData) ; |
|
409 |
break ; |
|
410 |
||
411 |
case SnmpPduPacket.pduGetBulkRequestPdu: |
|
412 |
respPdu = makeGetBulkResponsePdu((SnmpPduBulk)reqPdu, |
|
413 |
userData) ; |
|
414 |
break ; |
|
415 |
} |
|
416 |
} |
|
417 |
else { // reqPdu is rejected by ACLs
|
|
418 |
// respPdu contains the error response to be sent. |
|
419 |
// We send this response only if authResEnabled is true. |
|
420 |
if (!snmpServer.getAuthRespEnabled()) { // No response should be sent
|
|
421 |
respPdu = null ; |
|
422 |
} |
|
423 |
if (snmpServer.getAuthTrapEnabled()) { // A trap must be sent
|
|
424 |
try {
|
|
425 |
snmpServer.snmpV1Trap(SnmpPduTrap. |
|
426 |
trapAuthenticationFailure, 0, |
|
427 |
new SnmpVarBindList()) ; |
|
428 |
} |
|
429 |
catch(Exception x) {
|
|
430 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
|
|
431 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
|
432 |
"makeResponsePdu", "Failure when sending authentication trap", x); |
|
433 |
} |
|
434 |
} |
|
435 |
} |
|
436 |
} |
|
437 |
} |
|
438 |
return respPdu ; |
|
439 |
} |
|
440 |
||
441 |
// |
|
442 |
// Generates a response packet, filling the values in the |
|
443 |
// varbindlist with one of endOfMibView, noSuchObject, noSuchInstance |
|
444 |
// according to the value of <code>status</code> |
|
445 |
// |
|
446 |
// @param statusTag should be one of: |
|
447 |
// <li>SnmpDataTypeEnums.errEndOfMibViewTag</li> |
|
448 |
// <li>SnmpDataTypeEnums.errNoSuchObjectTag</li> |
|
449 |
// <li>SnmpDataTypeEnums.errNoSuchInstanceTag</li> |
|
450 |
// |
|
451 |
SnmpPduPacket makeErrorVarbindPdu(SnmpPduPacket req, int statusTag) {
|
|
452 |
||
453 |
final SnmpVarBind[] vblist = req.varBindList; |
|
454 |
final int length = vblist.length; |
|
455 |
||
456 |
switch (statusTag) {
|
|
457 |
case SnmpDataTypeEnums.errEndOfMibViewTag: |
|
458 |
for (int i=0 ; i<length ; i++) |
|
459 |
vblist[i].value = SnmpVarBind.endOfMibView; |
|
460 |
break; |
|
461 |
case SnmpDataTypeEnums.errNoSuchObjectTag: |
|
462 |
for (int i=0 ; i<length ; i++) |
|
463 |
vblist[i].value = SnmpVarBind.noSuchObject; |
|
464 |
break; |
|
465 |
case SnmpDataTypeEnums.errNoSuchInstanceTag: |
|
466 |
for (int i=0 ; i<length ; i++) |
|
467 |
vblist[i].value = SnmpVarBind.noSuchInstance; |
|
468 |
break; |
|
469 |
default: |
|
470 |
return newErrorResponsePdu(req,snmpRspGenErr,1); |
|
471 |
} |
|
472 |
return newValidResponsePdu(req,vblist); |
|
473 |
} |
|
474 |
||
475 |
// Generates an appropriate response when no mib is registered in |
|
476 |
// the adaptor. |
|
477 |
// |
|
478 |
// <li>If the version is V1:</li> |
|
479 |
// <ul><li>Generates a NoSuchName error V1 response PDU</li></ul> |
|
480 |
// <li>If the version is V2:</li> |
|
481 |
// <ul><li>If the request is a GET, fills the varbind list with |
|
482 |
// NoSuchObject's</li> |
|
483 |
// <li>If the request is a GET-NEXT/GET-BULK, fills the varbind |
|
484 |
// list with EndOfMibView's</li> |
|
485 |
// <li>If the request is a SET, generates a NoAccess error V2 |
|
486 |
// response PDU</li> |
|
487 |
// </ul> |
|
488 |
// |
|
489 |
// |
|
490 |
SnmpPduPacket makeNoMibErrorPdu(SnmpPduRequest req, Object userData) {
|
|
491 |
// There is no agent registered |
|
492 |
// |
|
493 |
if (req.version == SnmpDefinitions.snmpVersionOne) {
|
|
494 |
// Version 1: => NoSuchName |
|
495 |
return |
|
496 |
newErrorResponsePdu(req,snmpRspNoSuchName,1); |
|
497 |
} else if (req.version == SnmpDefinitions.snmpVersionTwo) {
|
|
498 |
// Version 2: => depends on PDU type |
|
499 |
switch (req.type) {
|
|
500 |
case pduSetRequestPdu : |
|
501 |
case pduWalkRequest : |
|
502 |
// SET request => NoAccess |
|
503 |
return |
|
504 |
newErrorResponsePdu(req,snmpRspNoAccess,1); |
|
505 |
case pduGetRequestPdu : |
|
506 |
// GET request => NoSuchObject |
|
507 |
return |
|
508 |
makeErrorVarbindPdu(req,SnmpDataTypeEnums. |
|
509 |
errNoSuchObjectTag); |
|
510 |
case pduGetNextRequestPdu : |
|
511 |
case pduGetBulkRequestPdu : |
|
512 |
// GET-NEXT or GET-BULK => EndOfMibView |
|
513 |
return |
|
514 |
makeErrorVarbindPdu(req,SnmpDataTypeEnums. |
|
515 |
errEndOfMibViewTag); |
|
516 |
default: |
|
517 |
} |
|
518 |
} |
|
519 |
// Something wrong here: => snmpRspGenErr |
|
520 |
return newErrorResponsePdu(req,snmpRspGenErr,1); |
|
521 |
} |
|
522 |
||
523 |
/** |
|
524 |
* Here we make the response pdu from a get/set request pdu. |
|
525 |
* At this level, the result is never null. |
|
526 |
*/ |
|
527 |
private SnmpPduPacket makeGetSetResponsePdu(SnmpPduRequest req, |
|
528 |
Object userData) {
|
|
529 |
||
530 |
// Create the trhead group specific for handling sub-requests |
|
531 |
// associated to the current request. Use the invoke id |
|
532 |
// |
|
533 |
// Nice idea to use a thread group on a request basis. |
|
534 |
// However the impact on performance is terrible ! |
|
535 |
// theGroup= new ThreadGroup(thread.getThreadGroup(), |
|
536 |
// "request " + String.valueOf(req.requestId)); |
|
537 |
||
538 |
// Let's build the varBindList for the response pdu |
|
539 |
// |
|
540 |
||
541 |
if (req.varBindList == null) {
|
|
542 |
// Good ! Let's make a full response pdu. |
|
543 |
// |
|
544 |
return newValidResponsePdu(req, null) ; |
|
545 |
} |
|
546 |
||
547 |
// First we need to split the request into subrequests |
|
548 |
// |
|
549 |
splitRequest(req); |
|
550 |
int nbSubRequest= subs.size(); |
|
551 |
if (nbSubRequest == 1) |
|
552 |
return turboProcessingGetSet(req,userData); |
|
553 |
||
554 |
||
555 |
// Execute all the subrequests resulting from the split of the |
|
556 |
// varbind list. |
|
557 |
// |
|
558 |
SnmpPduPacket result= executeSubRequest(req,userData); |
|
559 |
if (result != null) |
|
560 |
// It means that an error occured. The error is already |
|
561 |
// formatted by the executeSubRequest |
|
562 |
// method. |
|
563 |
return result; |
|
564 |
||
565 |
// So far so good. So we need to concatenate all the answers. |
|
566 |
// |
|
567 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
|
|
568 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINER, dbgTag, |
|
569 |
"makeGetSetResponsePdu", |
|
570 |
"Build the unified response for request " + req.requestId); |
|
571 |
} |
|
572 |
return mergeResponses(req); |
|
573 |
} |
|
574 |
||
575 |
/** |
|
576 |
* The method runs all the sub-requests associated to the current |
|
577 |
* instance of SnmpRequestHandler. |
|
578 |
*/ |
|
579 |
private SnmpPduPacket executeSubRequest(SnmpPduPacket req, |
|
580 |
Object userData) {
|
|
581 |
||
582 |
int errorStatus = SnmpDefinitions.snmpRspNoError ; |
|
583 |
int nbSubRequest= subs.size(); |
|
584 |
||
585 |
int i=0; |
|
586 |
// If it's a set request, we must first check any varBind |
|
587 |
// |
|
588 |
if (req.type == pduSetRequestPdu) {
|
|
589 |
||
590 |
i=0; |
|
591 |
for(Enumeration e= subs.elements(); e.hasMoreElements() ; i++) {
|
|
592 |
// Indicate to the sub request that a check must be invoked ... |
|
593 |
// OK we should have defined out own tag for that ! |
|
594 |
// |
|
595 |
SnmpSubRequestHandler sub= (SnmpSubRequestHandler) |
|
596 |
e.nextElement(); |
|
597 |
sub.setUserData(userData); |
|
598 |
sub.type= pduWalkRequest; |
|
599 |
||
600 |
sub.run(); |
|
601 |
||
602 |
sub.type= pduSetRequestPdu; |
|
603 |
||
604 |
if (sub.getErrorStatus() != SnmpDefinitions.snmpRspNoError) {
|
|
605 |
// No point to go any further. |
|
606 |
// |
|
607 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
|
|
608 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
|
609 |
"executeSubRequest", "an error occurs"); |
|
610 |
} |
|
611 |
||
612 |
return newErrorResponsePdu(req, errorStatus, |
|
613 |
sub.getErrorIndex() + 1) ; |
|
614 |
} |
|
615 |
} |
|
616 |
}// end processing check operation for a set PDU. |
|
617 |
||
618 |
// Let's start the sub-requests. |
|
619 |
// |
|
620 |
i=0; |
|
621 |
for(Enumeration e= subs.elements(); e.hasMoreElements() ;i++) {
|
|
622 |
SnmpSubRequestHandler sub= (SnmpSubRequestHandler) e.nextElement(); |
|
623 |
/* NPCTE fix for bugId 4492741, esc 0, 16-August 2001 */ |
|
624 |
sub.setUserData(userData); |
|
625 |
/* end of NPCTE fix for bugId 4492741 */ |
|
626 |
||
627 |
sub.run(); |
|
628 |
||
629 |
if (sub.getErrorStatus() != SnmpDefinitions.snmpRspNoError) {
|
|
630 |
// No point to go any further. |
|
631 |
// |
|
632 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
|
|
633 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
|
634 |
"executeSubRequest", "an error occurs"); |
|
635 |
} |
|
636 |
||
637 |
return newErrorResponsePdu(req, errorStatus, |
|
638 |
sub.getErrorIndex() + 1) ; |
|
639 |
} |
|
640 |
} |
|
641 |
||
642 |
// everything is ok |
|
643 |
// |
|
644 |
return null; |
|
645 |
} |
|
646 |
||
647 |
/** |
|
648 |
* Optimize when there is only one sub request |
|
649 |
*/ |
|
650 |
private SnmpPduPacket turboProcessingGetSet(SnmpPduRequest req, |
|
651 |
Object userData) {
|
|
652 |
||
653 |
int errorStatus = SnmpDefinitions.snmpRspNoError ; |
|
654 |
SnmpSubRequestHandler sub = subs.elements().nextElement(); |
|
655 |
sub.setUserData(userData); |
|
656 |
||
657 |
// Indicate to the sub request that a check must be invoked ... |
|
658 |
// OK we should have defined out own tag for that ! |
|
659 |
// |
|
660 |
if (req.type == SnmpDefinitions.pduSetRequestPdu) {
|
|
661 |
sub.type= pduWalkRequest; |
|
662 |
sub.run(); |
|
663 |
sub.type= pduSetRequestPdu; |
|
664 |
||
665 |
// Check the error status. |
|
666 |
// |
|
667 |
errorStatus= sub.getErrorStatus(); |
|
668 |
if (errorStatus != SnmpDefinitions.snmpRspNoError) {
|
|
669 |
// No point to go any further. |
|
670 |
// |
|
671 |
return newErrorResponsePdu(req, errorStatus, |
|
672 |
sub.getErrorIndex() + 1) ; |
|
673 |
} |
|
674 |
} |
|
675 |
||
676 |
// process the operation |
|
677 |
// |
|
678 |
||
679 |
sub.run(); |
|
680 |
errorStatus= sub.getErrorStatus(); |
|
681 |
if (errorStatus != SnmpDefinitions.snmpRspNoError) {
|
|
682 |
// No point to go any further. |
|
683 |
// |
|
684 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
|
|
685 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
|
686 |
"turboProcessingGetSet", "an error occurs"); |
|
687 |
} |
|
688 |
int realIndex= sub.getErrorIndex() + 1; |
|
689 |
return newErrorResponsePdu(req, errorStatus, realIndex) ; |
|
690 |
} |
|
691 |
||
692 |
// So far so good. So we need to concatenate all the answers. |
|
693 |
// |
|
694 |
||
695 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
|
|
696 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINER, dbgTag, |
|
697 |
"turboProcessingGetSet", "build the unified response for request " |
|
698 |
+ req.requestId); |
|
699 |
} |
|
700 |
return mergeResponses(req); |
|
701 |
} |
|
702 |
||
703 |
/** |
|
704 |
* Here we make the response pdu for a bulk request. |
|
705 |
* At this level, the result is never null. |
|
706 |
*/ |
|
707 |
private SnmpPduPacket makeGetBulkResponsePdu(SnmpPduBulk req, |
|
708 |
Object userData) {
|
|
709 |
||
710 |
SnmpVarBind[] respVarBindList = null ; |
|
711 |
||
712 |
// RFC 1905, Section 4.2.3, p14 |
|
713 |
int L = req.varBindList.length ; |
|
714 |
int N = Math.max(Math.min(req.nonRepeaters, L), 0) ; |
|
715 |
int M = Math.max(req.maxRepetitions, 0) ; |
|
716 |
int R = L - N ; |
|
717 |
||
718 |
if (req.varBindList == null) {
|
|
719 |
// Good ! Let's make a full response pdu. |
|
720 |
// |
|
721 |
return newValidResponsePdu(req, null) ; |
|
722 |
} |
|
723 |
||
724 |
// Split the request into subrequests. |
|
725 |
// |
|
726 |
splitBulkRequest(req, N, M, R); |
|
727 |
SnmpPduPacket result= executeSubRequest(req,userData); |
|
728 |
if (result != null) |
|
729 |
return result; |
|
730 |
||
731 |
respVarBindList= mergeBulkResponses(N + (M * R)); |
|
732 |
||
733 |
// Now we remove useless trailing endOfMibView. |
|
734 |
// |
|
735 |
int m2 ; // respVarBindList[m2] item and next are going to be removed |
|
736 |
int t = respVarBindList.length ; |
|
737 |
while ((t > N) && (respVarBindList[t-1]. |
|
738 |
value.equals(SnmpVarBind.endOfMibView))) {
|
|
739 |
t-- ; |
|
740 |
} |
|
741 |
if (t == N) |
|
742 |
m2 = N + R ; |
|
743 |
else |
|
744 |
m2 = N + ((t -1 -N) / R + 2) * R ; // Trivial, of course... |
|
745 |
if (m2 < respVarBindList.length) {
|
|
746 |
SnmpVarBind[] truncatedList = new SnmpVarBind[m2] ; |
|
747 |
for (int i = 0 ; i < m2 ; i++) {
|
|
748 |
truncatedList[i] = respVarBindList[i] ; |
|
749 |
} |
|
750 |
respVarBindList = truncatedList ; |
|
751 |
} |
|
752 |
||
753 |
// Good ! Let's make a full response pdu. |
|
754 |
// |
|
755 |
return newValidResponsePdu(req, respVarBindList) ; |
|
756 |
} |
|
757 |
||
758 |
/** |
|
759 |
* Check the type of the pdu: only the get/set/bulk request |
|
760 |
* are accepted. |
|
761 |
*/ |
|
762 |
private boolean checkPduType(SnmpPduPacket pdu) {
|
|
763 |
||
764 |
boolean result = true ; |
|
765 |
||
766 |
switch(pdu.type) {
|
|
767 |
||
768 |
case SnmpDefinitions.pduGetRequestPdu: |
|
769 |
case SnmpDefinitions.pduGetNextRequestPdu: |
|
770 |
case SnmpDefinitions.pduSetRequestPdu: |
|
771 |
case SnmpDefinitions.pduGetBulkRequestPdu: |
|
772 |
result = true ; |
|
773 |
break; |
|
774 |
||
775 |
default: |
|
776 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
|
|
777 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
|
778 |
"checkPduType", "cannot respond to this kind of PDU"); |
|
779 |
} |
|
780 |
result = false ; |
|
781 |
break; |
|
782 |
} |
|
783 |
||
784 |
return result ; |
|
785 |
} |
|
786 |
||
787 |
/** |
|
788 |
* Check if the specified pdu is conform to the ACL. |
|
789 |
* This method returns null if the pdu is ok. If not, it returns |
|
790 |
* the response pdu to be replied. |
|
791 |
*/ |
|
792 |
private SnmpPduPacket checkAcl(SnmpPduPacket pdu) {
|
|
793 |
SnmpPduPacket response = null ; |
|
794 |
String community = new String(pdu.community) ; |
|
795 |
||
796 |
// We check the pdu type and create an error response if |
|
797 |
// the check failed. |
|
798 |
// |
|
799 |
if (ipacl != null) {
|
|
800 |
if (pdu.type == SnmpDefinitions.pduSetRequestPdu) {
|
|
801 |
if (!((InetAddressAcl)ipacl). |
|
802 |
checkWritePermission(pdu.address, community)) {
|
|
803 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
|
|
804 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINER, dbgTag, |
|
805 |
"checkAcl", "sender is " + pdu.address + |
|
806 |
" with " + community +". Sender has no write permission"); |
|
807 |
} |
|
808 |
int err = SnmpSubRequestHandler. |
|
809 |
mapErrorStatus(SnmpDefinitions. |
|
810 |
snmpRspAuthorizationError, |
|
811 |
pdu.version, pdu.type); |
|
812 |
response = newErrorResponsePdu(pdu, err, 0) ; |
|
813 |
} |
|
814 |
else {
|
|
815 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
|
|
816 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINER, dbgTag, |
|
817 |
"checkAcl", "sender is " + pdu.address + |
|
818 |
" with " + community +". Sender has write permission"); |
|
819 |
} |
|
820 |
} |
|
821 |
} |
|
822 |
else {
|
|
823 |
if (!((InetAddressAcl)ipacl).checkReadPermission(pdu.address, community)) {
|
|
824 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
|
|
825 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINER, dbgTag, |
|
826 |
"checkAcl", "sender is " + pdu.address + |
|
827 |
" with " + community +". Sender has no read permission"); |
|
828 |
} |
|
829 |
int err = SnmpSubRequestHandler. |
|
830 |
mapErrorStatus(SnmpDefinitions. |
|
831 |
snmpRspAuthorizationError, |
|
832 |
pdu.version, pdu.type); |
|
833 |
response = newErrorResponsePdu(pdu, |
|
834 |
err, |
|
835 |
0); |
|
836 |
SnmpAdaptorServer snmpServer = |
|
837 |
(SnmpAdaptorServer)adaptorServer; |
|
838 |
snmpServer.updateErrorCounters(SnmpDefinitions. |
|
839 |
snmpRspNoSuchName); |
|
840 |
} |
|
841 |
else {
|
|
842 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
|
|
843 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINER, dbgTag, |
|
844 |
"checkAcl", "sender is " + pdu.address + |
|
845 |
" with " + community +". Sender has read permission"); |
|
846 |
} |
|
847 |
} |
|
848 |
} |
|
849 |
} |
|
850 |
||
851 |
// If the response is not null, this means the pdu is rejected. |
|
852 |
// So let's update the statistics. |
|
853 |
// |
|
854 |
if (response != null) {
|
|
855 |
SnmpAdaptorServer snmpServer = (SnmpAdaptorServer)adaptorServer ; |
|
856 |
snmpServer.incSnmpInBadCommunityUses(1) ; |
|
857 |
if (((InetAddressAcl)ipacl).checkCommunity(community) == false) |
|
858 |
snmpServer.incSnmpInBadCommunityNames(1) ; |
|
859 |
} |
|
860 |
||
861 |
return response ; |
|
862 |
} |
|
863 |
||
864 |
/** |
|
865 |
* Make a response pdu with the specified error status and index. |
|
866 |
* NOTE: the response pdu share its varBindList with the request pdu. |
|
867 |
*/ |
|
868 |
private SnmpPduRequest newValidResponsePdu(SnmpPduPacket reqPdu, |
|
869 |
SnmpVarBind[] varBindList) {
|
|
870 |
SnmpPduRequest result = new SnmpPduRequest() ; |
|
871 |
||
872 |
result.address = reqPdu.address ; |
|
873 |
result.port = reqPdu.port ; |
|
874 |
result.version = reqPdu.version ; |
|
875 |
result.community = reqPdu.community ; |
|
876 |
result.type = result.pduGetResponsePdu ; |
|
877 |
result.requestId = reqPdu.requestId ; |
|
878 |
result.errorStatus = SnmpDefinitions.snmpRspNoError ; |
|
879 |
result.errorIndex = 0 ; |
|
880 |
result.varBindList = varBindList ; |
|
881 |
||
882 |
((SnmpAdaptorServer)adaptorServer). |
|
883 |
updateErrorCounters(result.errorStatus) ; |
|
884 |
||
885 |
return result ; |
|
886 |
} |
|
887 |
||
888 |
/** |
|
889 |
* Make a response pdu with the specified error status and index. |
|
890 |
* NOTE: the response pdu share its varBindList with the request pdu. |
|
891 |
*/ |
|
892 |
private SnmpPduRequest newErrorResponsePdu(SnmpPduPacket req,int s,int i) {
|
|
893 |
SnmpPduRequest result = newValidResponsePdu(req, null) ; |
|
894 |
result.errorStatus = s ; |
|
895 |
result.errorIndex = i ; |
|
896 |
result.varBindList = req.varBindList ; |
|
897 |
||
898 |
((SnmpAdaptorServer)adaptorServer). |
|
899 |
updateErrorCounters(result.errorStatus) ; |
|
900 |
||
901 |
return result ; |
|
902 |
} |
|
903 |
||
904 |
private SnmpMessage newTooBigMessage(SnmpMessage reqMsg) |
|
905 |
throws SnmpTooBigException {
|
|
906 |
SnmpMessage result = null ; |
|
907 |
SnmpPduPacket reqPdu = null ; |
|
908 |
||
909 |
try {
|
|
910 |
reqPdu = (SnmpPduPacket)pduFactory.decodeSnmpPdu(reqMsg) ; |
|
911 |
if (reqPdu != null) {
|
|
912 |
SnmpPduPacket respPdu = newTooBigPdu(reqPdu) ; |
|
913 |
result = (SnmpMessage)pduFactory. |
|
914 |
encodeSnmpPdu(respPdu, packet.getData().length) ; |
|
915 |
} |
|
916 |
} |
|
917 |
catch(SnmpStatusException x) {
|
|
918 |
// This should not occur because decodeIncomingRequest has normally |
|
919 |
// been successfully called before. |
|
920 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
|
|
921 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
|
922 |
"newTooBigMessage", "Internal error", x); |
|
923 |
} |
|
|
10419
12c063b39232
7084245: Update usages of InternalError to use exception chaining
sherman
parents:
5506
diff
changeset
|
924 |
throw new InternalError(x) ; |
| 2 | 925 |
} |
926 |
||
927 |
return result ; |
|
928 |
} |
|
929 |
||
930 |
private SnmpPduPacket newTooBigPdu(SnmpPduPacket req) {
|
|
931 |
SnmpPduRequest result = |
|
932 |
newErrorResponsePdu(req, SnmpDefinitions.snmpRspTooBig, 0) ; |
|
933 |
result.varBindList = null ; |
|
934 |
return result ; |
|
935 |
} |
|
936 |
||
937 |
private SnmpPduPacket reduceResponsePdu(SnmpPduPacket req, |
|
938 |
SnmpPduPacket resp, |
|
939 |
int acceptedVbCount) |
|
940 |
throws SnmpTooBigException {
|
|
941 |
||
942 |
// Reduction can be attempted only on bulk response |
|
943 |
// |
|
944 |
if (req.type != req.pduGetBulkRequestPdu) {
|
|
945 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
|
|
946 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
|
947 |
"reduceResponsePdu", "cannot remove anything"); |
|
948 |
} |
|
949 |
throw new SnmpTooBigException(acceptedVbCount) ; |
|
950 |
} |
|
951 |
||
952 |
// We're going to reduce the varbind list. |
|
953 |
// First determine which items should be removed. |
|
954 |
// Next duplicate and replace the existing list by the reduced one. |
|
955 |
// |
|
956 |
// acceptedVbCount is the number of varbind which have been |
|
957 |
// successfully encoded before reaching bufferSize: |
|
958 |
// * when it is >= 2, we split the varbindlist at this |
|
959 |
// position (-1 to be safe), |
|
960 |
// * when it is 1, we only put one (big?) item in the varbindlist |
|
961 |
// * when it is 0 (in fact, acceptedVbCount is not available), |
|
962 |
// we split the varbindlist by 2. |
|
963 |
// |
|
964 |
int vbCount = resp.varBindList.length ; |
|
965 |
if (acceptedVbCount >= 3) |
|
966 |
vbCount = Math.min(acceptedVbCount - 1, resp.varBindList.length) ; |
|
967 |
else if (acceptedVbCount == 1) |
|
968 |
vbCount = 1 ; |
|
969 |
else // acceptedCount == 0 ie it is unknown |
|
970 |
vbCount = resp.varBindList.length / 2 ; |
|
971 |
||
972 |
if (vbCount < 1) {
|
|
973 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
|
|
974 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
|
975 |
"reduceResponsePdu", "cannot remove anything"); |
|
976 |
} |
|
977 |
throw new SnmpTooBigException(acceptedVbCount) ; |
|
978 |
} |
|
979 |
else {
|
|
980 |
SnmpVarBind[] newVbList = new SnmpVarBind[vbCount] ; |
|
981 |
for (int i = 0 ; i < vbCount ; i++) {
|
|
982 |
newVbList[i] = resp.varBindList[i] ; |
|
983 |
} |
|
984 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
|
|
985 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, dbgTag, |
|
986 |
"reduceResponsePdu", (resp.varBindList.length - newVbList.length) + |
|
987 |
" items have been removed"); |
|
988 |
} |
|
989 |
resp.varBindList = newVbList ; |
|
990 |
} |
|
991 |
||
992 |
return resp ; |
|
993 |
} |
|
994 |
||
995 |
/** |
|
996 |
* The method takes the incoming requests and split it into subrequests. |
|
997 |
*/ |
|
998 |
private void splitRequest(SnmpPduRequest req) {
|
|
999 |
||
1000 |
int nbAgents= mibs.size(); |
|
1001 |
SnmpMibAgent agent= (SnmpMibAgent) mibs.firstElement(); |
|
1002 |
if (nbAgents == 1) {
|
|
1003 |
// Take all the oids contained in the request and |
|
1004 |
// |
|
1005 |
subs.put(agent, new SnmpSubRequestHandler(agent, req, true)); |
|
1006 |
return; |
|
1007 |
} |
|
1008 |
||
1009 |
// For the get next operation we are going to send the varbind list |
|
1010 |
// to all agents |
|
1011 |
// |
|
1012 |
if (req.type == pduGetNextRequestPdu) {
|
|
1013 |
for(Enumeration e= mibs.elements(); e.hasMoreElements(); ) {
|
|
1014 |
SnmpMibAgent ag= (SnmpMibAgent) e.nextElement(); |
|
1015 |
subs.put(ag, new SnmpSubNextRequestHandler(adaptor, ag, req)); |
|
1016 |
} |
|
1017 |
return; |
|
1018 |
} |
|
1019 |
||
1020 |
int nbReqs= req.varBindList.length; |
|
1021 |
SnmpVarBind[] vars= req.varBindList; |
|
1022 |
SnmpSubRequestHandler sub; |
|
1023 |
for(int i=0; i < nbReqs; i++) {
|
|
1024 |
agent= root.getAgentMib(vars[i].oid); |
|
1025 |
sub= subs.get(agent); |
|
1026 |
if (sub == null) {
|
|
1027 |
// We need to create the sub request handler and update |
|
1028 |
// the hashtable |
|
1029 |
// |
|
1030 |
sub= new SnmpSubRequestHandler(agent, req); |
|
1031 |
subs.put(agent, sub); |
|
1032 |
} |
|
1033 |
||
1034 |
// Update the translation table within the subrequest |
|
1035 |
// |
|
1036 |
sub.updateRequest(vars[i], i); |
|
1037 |
} |
|
1038 |
} |
|
1039 |
||
1040 |
/** |
|
1041 |
* The method takes the incoming get bulk requests and split it into |
|
1042 |
* subrequests. |
|
1043 |
*/ |
|
1044 |
private void splitBulkRequest(SnmpPduBulk req, |
|
1045 |
int nonRepeaters, |
|
1046 |
int maxRepetitions, |
|
1047 |
int R) {
|
|
1048 |
// Send the getBulk to all agents |
|
1049 |
// |
|
1050 |
for(Enumeration e= mibs.elements(); e.hasMoreElements(); ) {
|
|
1051 |
SnmpMibAgent agent = (SnmpMibAgent) e.nextElement(); |
|
1052 |
||
1053 |
if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
|
|
1054 |
SNMP_ADAPTOR_LOGGER.logp(Level.FINER, dbgTag, |
|
1055 |
"splitBulkRequest", "Create a sub with : " + agent + " " + nonRepeaters |
|
1056 |
+ " " + maxRepetitions + " " + R); |
|
1057 |
} |
|
1058 |
||
1059 |
subs.put(agent, |
|
1060 |
new SnmpSubBulkRequestHandler(adaptor, |
|
1061 |
agent, |
|
1062 |
req, |
|
1063 |
nonRepeaters, |
|
1064 |
maxRepetitions, |
|
1065 |
R)); |
|
1066 |
} |
|
1067 |
return; |
|
1068 |
} |
|
1069 |
||
1070 |
private SnmpPduPacket mergeResponses(SnmpPduRequest req) {
|
|
1071 |
||
1072 |
if (req.type == pduGetNextRequestPdu) {
|
|
1073 |
return mergeNextResponses(req); |
|
1074 |
} |
|
1075 |
||
1076 |
SnmpVarBind[] result= req.varBindList; |
|
1077 |
||
1078 |
// Go through the list of subrequests and concatenate. |
|
1079 |
// Hopefully, by now all the sub-requests should be finished |
|
1080 |
// |
|
1081 |
for(Enumeration e= subs.elements(); e.hasMoreElements();) {
|
|
1082 |
SnmpSubRequestHandler sub= (SnmpSubRequestHandler) e.nextElement(); |
|
1083 |
sub.updateResult(result); |
|
1084 |
} |
|
1085 |
return newValidResponsePdu(req,result); |
|
1086 |
} |
|
1087 |
||
1088 |
private SnmpPduPacket mergeNextResponses(SnmpPduRequest req) {
|
|
1089 |
int max= req.varBindList.length; |
|
1090 |
SnmpVarBind[] result= new SnmpVarBind[max]; |
|
1091 |
||
1092 |
// Go through the list of subrequests and concatenate. |
|
1093 |
// Hopefully, by now all the sub-requests should be finished |
|
1094 |
// |
|
1095 |
for(Enumeration e= subs.elements(); e.hasMoreElements();) {
|
|
1096 |
SnmpSubRequestHandler sub= (SnmpSubRequestHandler) e.nextElement(); |
|
1097 |
sub.updateResult(result); |
|
1098 |
} |
|
1099 |
||
1100 |
if (req.version == snmpVersionTwo) {
|
|
1101 |
return newValidResponsePdu(req,result); |
|
1102 |
} |
|
1103 |
||
1104 |
// In v1 make sure there is no endOfMibView ... |
|
1105 |
// |
|
1106 |
for(int i=0; i < max; i++) {
|
|
1107 |
SnmpValue val= result[i].value; |
|
1108 |
if (val == SnmpVarBind.endOfMibView) |
|
1109 |
return newErrorResponsePdu(req, |
|
1110 |
SnmpDefinitions.snmpRspNoSuchName, i+1); |
|
1111 |
} |
|
1112 |
||
1113 |
// So far so good ... |
|
1114 |
// |
|
1115 |
return newValidResponsePdu(req,result); |
|
1116 |
} |
|
1117 |
||
1118 |
private SnmpVarBind[] mergeBulkResponses(int size) {
|
|
1119 |
// Let's allocate the array for storing the result |
|
1120 |
// |
|
1121 |
SnmpVarBind[] result= new SnmpVarBind[size]; |
|
1122 |
for(int i= size-1; i >=0; --i) {
|
|
1123 |
result[i]= new SnmpVarBind(); |
|
1124 |
result[i].value= SnmpVarBind.endOfMibView; |
|
1125 |
} |
|
1126 |
||
1127 |
// Go through the list of subrequests and concatenate. |
|
1128 |
// Hopefully, by now all the sub-requests should be finished |
|
1129 |
// |
|
1130 |
for(Enumeration e= subs.elements(); e.hasMoreElements();) {
|
|
1131 |
SnmpSubRequestHandler sub= (SnmpSubRequestHandler) e.nextElement(); |
|
1132 |
sub.updateResult(result); |
|
1133 |
} |
|
1134 |
||
1135 |
return result; |
|
1136 |
} |
|
1137 |
||
1138 |
protected String makeDebugTag() {
|
|
1139 |
return "SnmpRequestHandler[" + adaptorServer.getProtocol() + ":" + |
|
1140 |
adaptorServer.getPort() + "]"; |
|
1141 |
} |
|
1142 |
||
1143 |
Thread createThread(Runnable r) {
|
|
1144 |
return null; |
|
1145 |
} |
|
1146 |
||
1147 |
static final private String InterruptSysCallMsg = |
|
1148 |
"Interrupted system call"; |
|
1149 |
||
1150 |
static final private SnmpStatusException noSuchNameException = |
|
1151 |
new SnmpStatusException(SnmpDefinitions.snmpRspNoSuchName) ; |
|
1152 |
} |