* Copyright 2010 TechDive.in
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/**
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package in.techdive.snmp4j.ex;
import java.io.IOException;
import org.snmp4j.CommandResponder;
import org.snmp4j.CommandResponderEvent;
import org.snmp4j.CommunityTarget;
import org.snmp4j.MessageDispatcher;
import org.snmp4j.MessageDispatcherImpl;
import org.snmp4j.MessageException;
import org.snmp4j.PDU;
import org.snmp4j.Snmp;
import org.snmp4j.log.LogFactory;
import org.snmp4j.mp.MPv1;
import org.snmp4j.mp.MPv2c;
import org.snmp4j.mp.StateReference;
import org.snmp4j.mp.StatusInformation;
import org.snmp4j.security.Priv3DES;
import org.snmp4j.security.SecurityProtocols;
import org.snmp4j.smi.OctetString;
import org.snmp4j.smi.TcpAddress;
import org.snmp4j.smi.TransportIpAddress;
import org.snmp4j.smi.UdpAddress;
import org.snmp4j.tools.console.SnmpRequest;
import org.snmp4j.transport.AbstractTransportMapping;
import org.snmp4j.transport.DefaultTcpTransportMapping;
import org.snmp4j.transport.DefaultUdpTransportMapping;
import org.snmp4j.util.MultiThreadedMessageDispatcher;
import org.snmp4j.util.ThreadPool;
public class TrapReceiver implements CommandResponder
{
public TrapReceiver()
{
}
public static void main(String[] args)
{
TrapReceiver snmp4jTrapReceiver = new TrapReceiver();
try
{
snmp4jTrapReceiver.listen(new UdpAddress("localhost/164"));
}
catch (IOException e)
{
System.err.println("Error in Listening for Trap");
System.err.println("Exception Message = " + e.getMessage());
}
}
/**
* This method will listen for traps and response pdu's from SNMP agent.
*/
public synchronized void listen(TransportIpAddress address) throws IOException
{
AbstractTransportMapping transport;
if (address instanceof TcpAddress)
{
transport = new DefaultTcpTransportMapping((TcpAddress) address);
}
else
{
transport = new DefaultUdpTransportMapping((UdpAddress) address);
}
ThreadPool threadPool = ThreadPool.create("DispatcherPool", 10);
MessageDispatcher mtDispatcher = new MultiThreadedMessageDispatcher(threadPool, new MessageDispatcherImpl());
// add message processing models
mtDispatcher.addMessageProcessingModel(new MPv1());
mtDispatcher.addMessageProcessingModel(new MPv2c());
// add all security protocols
SecurityProtocols.getInstance().addDefaultProtocols();
SecurityProtocols.getInstance().addPrivacyProtocol(new Priv3DES());
//Create Target
CommunityTarget target = new CommunityTarget();
target.setCommunity( new OctetString("public"));
Snmp snmp = new Snmp(mtDispatcher, transport);
snmp.addCommandResponder(this);
transport.listen();
System.out.println("Listening on " + address);
try
{
this.wait();
}
catch (InterruptedException ex)
{
Thread.currentThread().interrupt();
}
}
/**
* This method will be called whenever a pdu is received on the given port specified in the listen() method
*/
public synchronized void processPdu(CommandResponderEvent cmdRespEvent)
{
System.out.println("Received PDU...");
PDU pdu = cmdRespEvent.getPDU();
if (pdu != null)
{
System.out.println("Trap Type = " + pdu.getType());
System.out.println("Variable Bindings = " + pdu.getVariableBindings());
int pduType = pdu.getType();
if ((pduType != PDU.TRAP) && (pduType != PDU.V1TRAP) && (pduType != PDU.REPORT)
&& (pduType != PDU.RESPONSE))
{
pdu.setErrorIndex(0);
pdu.setErrorStatus(0);
pdu.setType(PDU.RESPONSE);
StatusInformation statusInformation = new StatusInformation();
StateReference ref = cmdRespEvent.getStateReference();
try
{
System.out.println(cmdRespEvent.getPDU());
cmdRespEvent.getMessageDispatcher().returnResponsePdu(cmdRespEvent.getMessageProcessingModel(),
cmdRespEvent.getSecurityModel(), cmdRespEvent.getSecurityName(), cmdRespEvent.getSecurityLevel(),
pdu, cmdRespEvent.getMaxSizeResponsePDU(), ref, statusInformation);
}
catch (MessageException ex)
{
System.err.println("Error while sending response: " + ex.getMessage());
LogFactory.getLogger(SnmpRequest.class).error(ex);
}
}
}
}
}