Examples with MessageDispatcherImpl org.snmp4j.MessageDispatcherImpl used on opensource projects

Example 1 with MessageDispatcherImpl

use of org.snmp4j.MessageDispatcherImpl in project opennms by OpenNMS.

the class Snmp4JAgentConfig method createSnmpSession.

public Snmp createSnmpSession() throws IOException {
    final TransportMapping<?> transport = new DefaultUdpTransportMapping();
    final MessageDispatcher disp = new MessageDispatcherImpl();
    final Snmp session;
    // models we need for the specific agent
    if (!isSnmpV3()) {
        disp.addMessageProcessingModel(new MPv1());
        disp.addMessageProcessingModel(new MPv2c());
        session = new Snmp(disp, transport);
    } else {
        // Make a new USM
        final USM usm = new USM(SecurityProtocols.getInstance(), new OctetString(MPv3.createLocalEngineID()), 0);
        // Add the specified user to the USM
        usm.addUser(getSecurityName(), new UsmUser(getSecurityName(), getAuthProtocol(), getAuthPassPhrase(), getPrivProtocol(), getPrivPassPhrase()));
        disp.addMessageProcessingModel(new MPv3(usm));
        session = new Snmp(disp, transport);
    }
    return session;
}

Example 2 with MessageDispatcherImpl

use of org.snmp4j.MessageDispatcherImpl in project opennms by OpenNMS.

the class Snmp4JUtils method convertPduToBytes.

/**
 * @param address
 * @param port
 * @param community
 * @param pdu
 *
 * @return Byte array representing the {@link PDU} in either SNMPv1 or SNMPv2
 * format, depending on the type of the {@link PDU} object.
 */
public static byte[] convertPduToBytes(InetAddress address, int port, String community, PDU pdu) throws Exception {
    final CountDownLatch latch = new CountDownLatch(1);
    final AtomicReference<byte[]> bytes = new AtomicReference<>();
    // IP address is optional when using the DummyTransport because
    // all requests are sent to the {@link DummyTransportResponder}
    final DummyTransport<IpAddress> transport = new DummyTransport<IpAddress>(null);
    final AbstractTransportMapping<IpAddress> responder = transport.getResponder(null);
    // Add a DummyTransportResponder listener that will receive the raw bytes of the PDU
    responder.addTransportListener(new TransportListener() {

        @Override
        public void processMessage(TransportMapping transport, Address address, ByteBuffer byteBuffer, TransportStateReference state) {
            byteBuffer.rewind();
            final byte[] byteArray = new byte[byteBuffer.remaining()];
            byteBuffer.get(byteArray);
            bytes.set(byteArray);
            byteBuffer.rewind();
            latch.countDown();
        }
    });
    // Create our own MessageDispatcher since we don't need to do all
    // of the crypto operations necessary to initialize SNMPv3 which is slow
    MessageDispatcher dispatcher = new MessageDispatcherImpl();
    dispatcher.addMessageProcessingModel(new MPv1());
    dispatcher.addMessageProcessingModel(new MPv2c());
    final Snmp snmp = new Snmp(dispatcher, responder);
    Snmp4JStrategy.trackSession(snmp);
    try {
        snmp.listen();
        CommunityTarget target = new CommunityTarget();
        target.setCommunity(new OctetString(community));
        if (pdu instanceof PDUv1) {
            target.setVersion(SnmpConstants.version1);
        } else {
            target.setVersion(SnmpConstants.version2c);
        }
        target.setAddress(Snmp4JAgentConfig.convertAddress(address, port));
        snmp.send(pdu, target, transport);
        latch.await();
        return bytes.get();
    } finally {
        try {
            snmp.close();
        } catch (final IOException e) {
            LOG.error("failed to close SNMP session", e);
        } finally {
            Snmp4JStrategy.reapSession(snmp);
        }
    }
}

Example 3 with MessageDispatcherImpl

use of org.snmp4j.MessageDispatcherImpl in project opennms by OpenNMS.

the class MockSnmpAgent method initMessageDispatcher.

/**
 * <p>
 * Note that this method can hang if your system entropy is not high enough.
 * Here is a stack trace from a test running on JDK 1.8u40:</p>
 *
 * <pre>
 * Thread [MockSnmpAgent-1657048932] (Suspended)
 * owns: SecureRandom  (id=26)
 * owns: SecureRandom  (id=27)
 * owns: SecurityProtocols  (id=28)
 * FileInputStream.readBytes(byte[], int, int) line: not available [native method]
 * FileInputStream.read(byte[], int, int) line: 255
 * NativeSeedGenerator(SeedGenerator$URLSeedGenerator).getSeedBytes(byte[]) line: 539
 * SeedGenerator.generateSeed(byte[]) line: 144
 * SecureRandom$SeederHolder.<clinit>() line: 203 [local variables unavailable]
 * SecureRandom.engineNextBytes(byte[]) line: 221
 * SecureRandom.nextBytes(byte[]) line: 468
 * Salt.<init>() line: 54
 * Salt.getInstance() line: 79
 * PrivDES.<init>() line: 57
 * SecurityProtocols.addDefaultProtocols() line: 155
 * MockSnmpAgent.initMessageDispatcher() line: 306
 * MockSnmpAgent(BaseAgent).init() line: 145
 * MockSnmpAgent.run() line: 380
 * Thread.run() line: 745
 * </pre>
 */
@Override
protected void initMessageDispatcher() {
    s_log.info("MockSnmpAgent: starting initMessageDispatcher()");
    try {
        dispatcher = new MessageDispatcherImpl();
        usm = new USM(SecurityProtocols.getInstance(), agent.getContextEngineID(), updateEngineBoots());
        mpv3 = new MPv3(usm);
        SecurityProtocols.getInstance().addDefaultProtocols();
        dispatcher.addMessageProcessingModel(new MPv1());
        dispatcher.addMessageProcessingModel(new MPv2c());
        dispatcher.addMessageProcessingModel(mpv3);
        initSnmpSession();
    } finally {
        s_log.info("MockSnmpAgent: finished initMessageDispatcher()");
    }
}

Example 4 with MessageDispatcherImpl

use of org.snmp4j.MessageDispatcherImpl in project LogHub by fbacchella.

the class TestTrap method testtrapv1Generic.

@Ignore
@Test
public void testtrapv1Generic() throws InterruptedException, IOException {
    BlockingQueue<Event> receiver = new ArrayBlockingQueue<>(2);
    SnmpTrap r = new SnmpTrap(receiver, new Pipeline(Collections.emptyList(), "testbig", null));
    r.setPort(0);
    Map<String, Object> props = new HashMap<>();
    props.put("mibdirs", new String[] { "/usr/share/snmp/mibs", "/tmp/mibs" });
    Assert.assertTrue(r.configure(new Properties(props)));
    r.start();
    CommandResponderEvent trapEvent = new CommandResponderEvent(new MessageDispatcherImpl(), new DefaultUdpTransportMapping(), TransportIpAddress.parse("127.0.0.1/162"), 0, 0, null, 0, null, null, 0, null);
    PDUv1 pdu = new PDUv1();
    pdu.setEnterprise(new OID("1.3.6.1.4.1.232"));
    pdu.setAgentAddress(new IpAddress());
    pdu.setGenericTrap(1);
    pdu.setTimestamp(10);
    pdu.add(new VariableBinding(new OID("1.3.6.1.6.3.1.1.4.1"), new OctetString("lldpRemTablesChange")));
    trapEvent.setPDU(pdu);
    r.processPdu(trapEvent);
    Event e = receiver.poll();
    Assert.assertEquals(0.1, (Double) e.get("time_stamp"), 1e-10);
    Assert.assertEquals("warmStart", e.get("generic_trap"));
    Assert.assertEquals("compaq", e.get("enterprise"));
    Assert.assertEquals(null, e.get("specific_trap"));
    Assert.assertEquals("lldpRemTablesChange", e.get("snmpTrapOID"));
    Assert.assertEquals(InetAddress.getByName("0.0.0.0"), e.get("agent_addr"));
    r.interrupt();
}

Example 5 with MessageDispatcherImpl

use of org.snmp4j.MessageDispatcherImpl in project LogHub by fbacchella.

the class TestTrap method testbig.

// @Test
// public void testone() throws InterruptedException, IOException {
// BlockingQueue<Event> receiver = new ArrayBlockingQueue<>(1);
// SnmpTrap r = new SnmpTrap(receiver, new Pipeline(Collections.emptyList(), "testone", null));
// r.setPort(0);
// Assert.assertTrue("Failed to configure trap receiver", r.configure(new Properties(Collections.emptyMap())));;
// List<String> content = r.smartPrint(new OID("1.0.8802.1.1.2.1.1.2.5"));
// Assert.assertEquals(1, content.size());
// Assert.assertEquals("lldpMessageTxHoldMultiplier", content.get(0));
// r.close();
// }
@Ignore
@Test
public void testbig() throws InterruptedException, IOException {
    BlockingQueue<Event> receiver = new ArrayBlockingQueue<>(2);
    SnmpTrap r = new SnmpTrap(receiver, new Pipeline(Collections.emptyList(), "testbig", null));
    r.setPort(0);
    Map<String, Object> props = new HashMap<>();
    props.put("mibdirs", new String[] { "/usr/share/snmp/mibs", "/tmp/mibs" });
    Assert.assertTrue(r.configure(new Properties(props)));
    r.start();
    CommandResponderEvent trapEvent = new CommandResponderEvent(new MessageDispatcherImpl(), new DefaultUdpTransportMapping(), TransportIpAddress.parse("127.0.0.1/162"), 0, 0, null, 0, null, null, 0, null);
    PDU pdu = new PDU();
    pdu.add(new VariableBinding(new OID("1.0.8802.1.1.2.1.4.1.1.8.207185300.2.15079"), new OctetString("vnet7")));
    pdu.add(new VariableBinding(new OID("1.0.8802.1.1.2.1.3.7.1.4.2"), new OctetString("eth0")));
    pdu.add(new VariableBinding(new OID("1.0.8802.1.1.2.1.4.1.1.9.207185300.2.15079"), new OctetString("localhost")));
    pdu.add(new VariableBinding(new OID("1.3.6.1.6.3.1.1.4.1"), new OctetString("lldpRemTablesChange")));
    trapEvent.setPDU(pdu);
    r.processPdu(trapEvent);
    Event e = receiver.poll();
    logger.debug(e.getClass());
    @SuppressWarnings("unchecked") Map<String, ?> details = (Map<String, ?>) e.get("lldpRemSysName");
    Assert.assertEquals(3, Array.getLength(details.get("index")));
    Assert.assertEquals("localhost", details.get("value"));
    r.interrupt();
}