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/*
*
* 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.qpid.server.security.auth.rmi;
import java.net.SocketAddress;
import org.apache.qpid.server.model.Broker;
import org.apache.qpid.server.security.SecurityManager;
import org.apache.qpid.server.security.SubjectCreator;
import org.apache.qpid.server.security.auth.AuthenticationResult.AuthenticationStatus;
import org.apache.qpid.server.security.auth.SubjectAuthenticationResult;
import javax.management.remote.JMXAuthenticator;
import javax.security.auth.Subject;
public class RMIPasswordAuthenticator implements JMXAuthenticator
{
static final String UNABLE_TO_LOOKUP = "The broker was unable to lookup the user details";
static final String SHOULD_BE_STRING_ARRAY = "User details should be String[]";
static final String SHOULD_HAVE_2_ELEMENTS = "User details should have 2 elements, username, password";
static final String SHOULD_BE_NON_NULL = "Supplied username and password should be non-null";
static final String INVALID_CREDENTIALS = "Invalid user details supplied";
static final String USER_NOT_AUTHORISED_FOR_MANAGEMENT = "User not authorised for management";
static final String CREDENTIALS_REQUIRED = "User details are required. " +
"Please ensure you are using an up to date management console to connect.";
private final Broker _broker;
private final SocketAddress _address;
public RMIPasswordAuthenticator(Broker broker, SocketAddress address)
{
_broker = broker;
_address = address;
}
public Subject authenticate(Object credentials) throws SecurityException
{
validateCredentials(credentials);
final String[] userCredentials = (String[]) credentials;
final String username = (String) userCredentials[0];
final String password = (String) userCredentials[1];
final Subject authenticatedSubject = doAuthentication(username, password);
doManagementAuthorisation(authenticatedSubject);
return authenticatedSubject;
}
private void validateCredentials(Object credentials)
{
// Verify that credential's are of type String[].
if (!(credentials instanceof String[]))
{
if (credentials == null)
{
throw new SecurityException(CREDENTIALS_REQUIRED);
}
else
{
throw new SecurityException(SHOULD_BE_STRING_ARRAY);
}
}
// Verify that required number of credentials.
if (((String[])credentials).length != 2)
{
throw new SecurityException(SHOULD_HAVE_2_ELEMENTS);
}
}
private Subject doAuthentication(final String username, final String password)
{
// Verify that all required credentials are actually present.
if (username == null || password == null)
{
throw new SecurityException(SHOULD_BE_NON_NULL);
}
SubjectCreator subjectCreator = _broker.getSubjectCreator(_address);
if (subjectCreator == null)
{
throw new SecurityException("Can't get subject creator for " + _address);
}
final SubjectAuthenticationResult result = subjectCreator.authenticate(username, password);
if (AuthenticationStatus.ERROR.equals(result.getStatus()))
{
throw new SecurityException("Authentication manager failed", result.getCause());
}
else if (AuthenticationStatus.SUCCESS.equals(result.getStatus()))
{
return result.getSubject();
}
else
{
throw new SecurityException(INVALID_CREDENTIALS);
}
}
private void doManagementAuthorisation(Subject authenticatedSubject)
{
SecurityManager.setThreadSubject(authenticatedSubject);
try
{
if (!_broker.getSecurityManager().accessManagement())
{
throw new SecurityException(USER_NOT_AUTHORISED_FOR_MANAGEMENT);
}
}
finally
{
SecurityManager.setThreadSubject(null);
}
}
}
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