Package org.apache.jackrabbit.rmi

Source Code of org.apache.jackrabbit.rmi.RepositoryStubImpl

/*
* 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 org.apache.jackrabbit.rmi;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.rmi.server.RemoteObject;
import java.security.Principal;
import java.security.acl.Group;
import java.util.Properties;

import javax.jcr.Repository;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.SimpleCredentials;

import org.apache.jackrabbit.core.JackrabbitRepositoryStub;
import org.apache.jackrabbit.core.SessionImpl;
import org.apache.jackrabbit.rmi.client.ClientAdapterFactory;
import org.apache.jackrabbit.rmi.client.LocalAdapterFactory;
import org.apache.jackrabbit.rmi.remote.RemoteRepository;
import org.apache.jackrabbit.rmi.server.RemoteAdapterFactory;
import org.apache.jackrabbit.rmi.server.ServerAdapterFactory;
import org.apache.jackrabbit.test.RepositoryStubException;

public class RepositoryStubImpl extends JackrabbitRepositoryStub {

    /**
     * A known principal used for access control tests.
     */
    private Principal principal;

    private RemoteRepository remote;

    private Repository repository;

    public RepositoryStubImpl(Properties env) {
        super(env);
    }

    @Override
    public synchronized Repository getRepository()
            throws RepositoryStubException {
        if (repository == null) {
            try {
                Repository repo = super.getRepository();
                principal = findKnownPrincipal(repo);

                RemoteAdapterFactory raf = new ServerAdapterFactory();
                remote = raf.getRemoteRepository(repo);

                // Make sure that the remote reference survives serialization
                ByteArrayOutputStream buffer = new ByteArrayOutputStream();
                ObjectOutputStream oos = new ObjectOutputStream(buffer);
                oos.writeObject(RemoteObject.toStub(remote));
                oos.close();

                ObjectInputStream ois = new ObjectInputStream(
                        new ByteArrayInputStream(buffer.toByteArray()));
                LocalAdapterFactory laf = new ClientAdapterFactory();
                repository =
                    laf.getRepository((RemoteRepository) ois.readObject());
            } catch (Exception e) {
                throw new RepositoryStubException(e);
            }
        }
        return repository;
    }

    private static Principal findKnownPrincipal(Repository repo)
            throws RepositoryException {
        SessionImpl session = (SessionImpl) repo.login(
                new SimpleCredentials("admin", "admin".toCharArray()));
        try {
            for (Principal principal : session.getSubject().getPrincipals()) {
                if (!(principal instanceof Group)) {
                    return principal;
                }
            }
            throw new RepositoryException("Known principal not found");
        } finally {
            session.logout();
        }
    }

    @Override
    public Principal getKnownPrincipal(Session ignored)
            throws RepositoryException {
        return principal;
    }

}
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