ConstrainableLookupLocatorTrustVerifier.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.
 */

package net.jini.discovery;

import java.rmi.RemoteException;
import net.jini.security.TrustVerifier;

/**
 * Trust verifier for {@link ConstrainableLookupLocator} instances.  This
 * class is intended to be specified in a resource to configure the
 * operation of {@link net.jini.security.Security#verifyObjectTrust
 * Security.verifyObjectTrust}.
 *
 * @author Sun Microsystems, Inc.
 * @since 2.0
 */
public class ConstrainableLookupLocatorTrustVerifier implements TrustVerifier {

    /**
     * Creates an instance.
     */
    public ConstrainableLookupLocatorTrustVerifier() {
    }

    /**
     * Returns <code>true</code> if the specified object is a trusted
     * <code>ConstrainableLookupLocator</code> instance; returns
     * <code>false</code> otherwise.  For the purposes of this verifier,
     * all instances of <code>ConstrainableLookupLocator</code> are
     * considered trusted.
     *
     * @throws SecurityException {@inheritDoc}
     * @throws NullPointerException {@inheritDoc}
     */
    public boolean isTrustedObject(Object obj, TrustVerifier.Context ctx)
	throws RemoteException
    {
	return obj instanceof ConstrainableLookupLocator;
    }
}