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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.access.plugins;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.io.File;
import javax.security.auth.Subject;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.lang.ObjectUtils;
import org.apache.log4j.Logger;
import org.apache.qpid.server.configuration.IllegalConfigurationException;
import org.apache.qpid.server.security.Result;
import org.apache.qpid.server.security.SecurityManager;
import org.apache.qpid.server.security.AccessControl;
import org.apache.qpid.server.security.access.ObjectProperties;
import org.apache.qpid.server.security.access.ObjectType;
import org.apache.qpid.server.security.access.Operation;
import org.apache.qpid.server.security.access.config.ConfigurationFile;
import org.apache.qpid.server.security.access.config.PlainConfiguration;
import org.apache.qpid.server.security.access.config.RuleSet;
public class DefaultAccessControl implements AccessControl
{
private static final Logger _logger = Logger.getLogger(DefaultAccessControl.class);
private RuleSet _ruleSet;
private File _aclFile;
public DefaultAccessControl(String fileName)
{
if (_logger.isDebugEnabled())
{
_logger.debug("Creating AccessControl instance using file: " + fileName);
}
_aclFile = new File(fileName);
}
DefaultAccessControl(RuleSet rs) throws ConfigurationException
{
_ruleSet = rs;
}
public void open()
{
if(_aclFile != null)
{
if (!_aclFile.exists())
{
throw new IllegalConfigurationException("ACL file '" + _aclFile + "' is not found");
}
ConfigurationFile configFile = new PlainConfiguration(_aclFile);
_ruleSet = configFile.load();
}
}
@Override
public void close()
{
//no-op
}
@Override
public void onDelete()
{
//no-op
}
@Override
public void onCreate()
{
//verify file exists
if(_aclFile != null)
{
if (!_aclFile.exists())
{
throw new IllegalConfigurationException("ACL file '" + _aclFile + "' is not found");
}
}
}
public Result getDefault()
{
return _ruleSet.getDefault();
}
/**
* Object instance access authorisation.
*
* Delegate to the {@link #authorise(Operation, ObjectType, ObjectProperties)} method, with
* the operation set to ACCESS and no object properties.
*/
public Result access(ObjectType objectType, Object inetSocketAddress)
{
InetAddress addressOfClient = null;
if(inetSocketAddress != null)
{
addressOfClient = ((InetSocketAddress) inetSocketAddress).getAddress();
}
return authoriseFromAddress(Operation.ACCESS, objectType, ObjectProperties.EMPTY, addressOfClient);
}
/**
* Check if an operation is authorised by asking the configuration object about the access
* control rules granted to the current thread's {@link Subject}. If there is no current
* user the plugin will abstain.
*/
public Result authorise(Operation operation, ObjectType objectType, ObjectProperties properties)
{
return authoriseFromAddress(operation, objectType, properties, null);
}
public Result authoriseFromAddress(Operation operation, ObjectType objectType, ObjectProperties properties, InetAddress addressOfClient)
{
final Subject subject = SecurityManager.getThreadSubject();
// Abstain if there is no subject/principal associated with this thread
if (subject == null || subject.getPrincipals().size() == 0)
{
return Result.ABSTAIN;
}
if(_logger.isDebugEnabled())
{
_logger.debug("Checking " + operation + " " + objectType + " " + ObjectUtils.defaultIfNull(addressOfClient, ""));
}
try
{
return _ruleSet.check(subject, operation, objectType, properties, addressOfClient);
}
catch(Exception e)
{
_logger.error("Unable to check " + operation + " " + objectType + " " + ObjectUtils.defaultIfNull(addressOfClient, ""), e);
return Result.DENIED;
}
}
}
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