I am trying to read windows event logs so I am using Jinterop API for that.
Here is the java code :
import java.io.IOException;
import java.util.logging.Level;
import org.jinterop.dcom.common.JIException;
import org.jinterop.dcom.common.JISystem;
import org.jinterop.dcom.core.JIComServer;
import org.jinterop.dcom.core.JIProgId;
import org.jinterop.dcom.core.JISession;
import org.jinterop.dcom.core.JIString;
import org.jinterop.dcom.core.JIVariant;
import org.jinterop.dcom.impls.JIObjectFactory;
import org.jinterop.dcom.impls.automation.IJIDispatch;
public class EventLogListener
{
private static final String WMI_DEFAULT_NAMESPACE = "ROOT\\CIMV2";
private static JISession configAndConnectDCom( String domain,
String user, String pass ) throws Exception
{
JISystem.getLogger().setLevel( Level.OFF );
try
{
JISystem.setInBuiltLogHandler( false );
}
catch ( IOException e )
{
e.printStackTrace();
}
JISystem.setAutoRegisteration( true );
JISession dcomSession = JISession.createSession( domain, user,
pass );
dcomSession.useSessionSecurity( true );
return dcomSession;
}
private static IJIDispatch getWmiLocator( String host, JISession
dcomSession ) throws Exception
{
JIComServer wbemLocatorComObj = new JIComServer,
JIProgId.valueOf( "WbemScripting.SWbemLocator" ), host,
dcomSession );
return (IJIDispatch) JIObjectFactory.narrowObject(
wbemLocatorComObj.createInstance().queryInterface(
IJIDispatch.IID ) );
}
private static IJIDispatch toIDispatch( JIVariant
comObjectAsVariant ) throws JIException
{
return (IJIDispatch) JIObjectFactory.narrowObject(
comObjectAsVariant.getObjectAsComObject() );
}
public static void main(String[] args)
{
String domain = DOMAIN_NAME;
String host = IP_ADDR;
String user = USER_NAME;
String pass = PASSWORD;
JISession dcomSession = null;
try
{
// Connect to DCOM on the remote system, and create an
// instance of the WbemScripting.SWbemLocator object to
// talk to WMI.
dcomSession = configAndConnectDCom( domain, user, pass );
IJIDispatch wbemLocator = getWmiLocator( host, dcomSession );
// Invoke the "ConnectServer" method on the SWbemLocator
// object via it's IDispatch COM pointer. We will connect to
// the default ROOT\CIMV2 namespace. This will result in us
// having a reference to a "SWbemServices" object.
JIVariant results[] =
wbemLocator.callMethodA( "ConnectServer", new Object[] { new
JIString( host ), new JIString( WMI_DEFAULT_NAMESPACE ),
JIVariant.OPTIONAL_PARAM(),
JIVariant.OPTIONAL_PARAM(), JIVariant.OPTIONAL_PARAM(),
JIVariant.OPTIONAL_PARAM(), new Integer( 0 ),
JIVariant.OPTIONAL_PARAM() } );
IJIDispatch wbemServices = toIDispatch( results[ 0 ] );
final String QUERY_FOR_ALL_LOG_EVENTS = "SELECT * FROM
__InstanceCreationEvent WHERE TargetInstance ISA
'Win32_NTLogEvent'";
final int RETURN_IMMEDIATE = 16;
final int FORWARD_ONLY = 32;
JIVariant[] eventSourceSet =
wbemServices.callMethodA( "ExecNotificationQuery", new
Object[] { new JIString( QUERY_FOR_ALL_LOG_EVENTS
), new JIString( "WQL" ),
new JIVariant( new Integer( RETURN_IMMEDIATE +
FORWARD_ONLY ) ) } );
IJIDispatch wbemEventSource = (IJIDispatch)
JIObjectFactory.narrowObject( ( eventSourceSet[ 0 ]
).getObjectAsComObject() );
while ( true )
{
// this blocks until an event log entry appears.
JIVariant eventAsVariant = (JIVariant) (
wbemEventSource.callMethodA( "NextEvent", new Object[]
{ JIVariant.OPTIONAL_PARAM() } ) )[ 0 ];
IJIDispatch wbemEvent = toIDispatch( eventAsVariant );
JIVariant objTextAsVariant = (JIVariant) (
wbemEvent.callMethodA( "GetObjectText_", new Object[]
{ new Integer( 1 ) } ) )[ 0 ];
String asText =
objTextAsVariant.getObjectAsString().getString();
System.out.println( asText );
}
}
catch ( Exception e )
{
e.printStackTrace();
}
finally
{
if ( null != dcomSession )
{
try
{
JISession.destroySession( dcomSession );
}
catch ( Exception ex )
{
ex.printStackTrace();
}
}
}
}
}
I am using Ubuntu and trying to read logs from remote machine. When I am running the below code I am getting "RPC Stub" Exception.
Exception in thread "main" java.lang.NoClassDefFoundError: rpc/Stub
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:
142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at
net.codejava.spring.controller.EventLogListener.getWmiLocator(
EventLogListener.java:45)
at net.codejava.spring.controller.EventLogListener.main(
EventLogListener.java:69)
Caused by: java.lang.ClassNotFoundException: rpc.Stub
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 14 more
Exception in thread "jI_ShutdownHook" java.lang.NullPointerException
at
org.jinterop.dcom.core.JIComOxidRuntime.stopResolver(
JIComOxidRuntime.java:577)
at org.jinterop.dcom.core.JISession$2.run(JISession.java:267)
at java.lang.Thread.run(Thread.java:745)
I googled about the exception and found that jar is missing so I added respective Jar file but still getting the same issue.
Could anyone please let me know how can I resolve this issue. Thanks.
I resolved this issue. I added jaxpc-api.jar file which contains rpc.Stub class but there are more API's which contain rpc.Stub class so don't include jaxpc-api.jar file.
There is j-interopdeps.jar file which contains rpc.Stub file for this and 1 more jar file required which is jcifs-1.3.14.jar file. After including these 2 jar files in the build path. Program will execute if username, password and host name would be correct.