/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
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 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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/*
 * @author    Sun Microsystems, Inc.
 * @build        @BUILD_TAG_PLACEHOLDER@
 *
 * @COPYRIGHT_MINI_LEGAL_NOTICE_PLACEHOLDER@
 */

package sun.management.jmxremote;

import sun.misc.ObjectInputFilter;
import java.rmi.AccessException;
import java.rmi.NotBoundException;
import java.rmi.Remote;
import java.rmi.RemoteException;
import java.rmi.server.RMIClientSocketFactory;
import java.rmi.server.RMIServerSocketFactory;

import sun.rmi.registry.RegistryImpl;

A Registry that consists of a single entry that never changes.
/** A Registry that consists of a single entry that never changes. */
public class SingleEntryRegistry extends RegistryImpl { private static final ObjectInputFilter singleFilter = new ObjectInputFilter() { @Override public Status checkInput(ObjectInputFilter.FilterInfo info) { return SingleEntryRegistry.singleRegistryFilter(info); } }; SingleEntryRegistry(int port, String name, Remote object) throws RemoteException { super(port, null, null, singleFilter); this.name = name; this.object = object; } SingleEntryRegistry(int port, RMIClientSocketFactory csf, RMIServerSocketFactory ssf, String name, Remote object) throws RemoteException { super(port, csf, ssf, singleFilter); this.name = name; this.object = object; } public String[] list() { return new String[] {name}; } public Remote lookup(String name) throws NotBoundException { if (name.equals(this.name)) return object; throw new NotBoundException("Not bound: \"" + name + "\" (only " + "bound name is \"" + this.name + "\")"); } public void bind(String name, Remote obj) throws AccessException { throw new AccessException("Cannot modify this registry"); } public void rebind(String name, Remote obj) throws AccessException { throw new AccessException("Cannot modify this registry"); } public void unbind(String name) throws AccessException { throw new AccessException("Cannot modify this registry"); }
ObjectInputFilter to check parameters to SingleEntryRegistry. Since it is a read-only Registry, no classes are accepted. String arguments are accepted without passing them to the serialFilter.
Params:
  • info – a reference to the serialization filter information
Returns:Status.REJECTED if parameters are out of range
/** * ObjectInputFilter to check parameters to SingleEntryRegistry. * Since it is a read-only Registry, no classes are accepted. * String arguments are accepted without passing them to the serialFilter. * * @param info a reference to the serialization filter information * @return Status.REJECTED if parameters are out of range */
private static ObjectInputFilter.Status singleRegistryFilter(ObjectInputFilter.FilterInfo info) { return (info.serialClass() != null || info.depth() > 2 || info.references() > 4 || info.arrayLength() >= 0) ? ObjectInputFilter.Status.REJECTED : ObjectInputFilter.Status.ALLOWED; } private final String name; private final Remote object; private static final long serialVersionUID = -4897238949499730950L; }