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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.config;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;
import org.apache.commons.lang.builder.ToStringStyle;
import org.apache.qpid.server.security.access.ObjectProperties;
import org.apache.qpid.server.security.access.ObjectType;
import org.apache.qpid.server.security.access.Operation;
/**
* An access control v2 rule action.
*
* An action consists of an {@link Operation} on an {@link ObjectType} with certain properties, stored in a {@link java.util.Map}.
* The operation and object should be an allowable combination, based on the {@link ObjectType#isAllowed(Operation)}
* method of the object, which is exposed as the {@link #isAllowed()} method here. The internal {@link #propertiesMatch(Map)}
* and {@link #valueMatches(String, String)} methods are used to determine wildcarded matching of properties, with
* the empty string or "*" matching all values, and "*" at the end of a rule value indicating prefix matching.
* <p>
* The {@link #matches(Action)} method is intended to be used when determining precedence of rules, and
* {@link #equals(Object)} and {@link #hashCode()} are intended for use in maps. This is due to the wildcard matching
* described above.
*/
public class Action
{
private final Operation _operation;
private final ObjectType _object;
private final ObjectProperties _properties;
public Action(Operation operation)
{
this(operation, ObjectType.ALL);
}
public Action(Operation operation, ObjectType object, String name)
{
this(operation, object, new ObjectProperties(name));
}
public Action(Operation operation, ObjectType object)
{
this(operation, object, ObjectProperties.EMPTY);
}
public Action(Operation operation, ObjectType object, ObjectProperties properties)
{
_operation = operation;
_object = object;
_properties = properties;
}
public Operation getOperation()
{
return _operation;
}
public ObjectType getObjectType()
{
return _object;
}
public ObjectProperties getProperties()
{
return _properties;
}
public boolean isAllowed()
{
return _object.isAllowed(_operation);
}
public boolean matches(Action a)
{
if (!operationsMatch(a))
{
return false;
}
if (!objectTypesMatch(a))
{
return false;
}
if (!propertiesMatch(a))
{
return false;
}
return true;
}
private boolean operationsMatch(Action a)
{
return Operation.ALL == a.getOperation() || getOperation() == a.getOperation();
}
private boolean objectTypesMatch(Action a)
{
return ObjectType.ALL == a.getObjectType() || getObjectType() == a.getObjectType();
}
private boolean propertiesMatch(Action a)
{
boolean propertiesMatch = false;
if (_properties != null)
{
propertiesMatch = _properties.matches(a.getProperties());
}
else if (a.getProperties() == null)
{
propertiesMatch = true;
}
return propertiesMatch;
}
@Override
public boolean equals(Object o)
{
if (!(o instanceof Action))
{
return false;
}
Action a = (Action) o;
return new EqualsBuilder()
.append(_operation, a.getOperation())
.append(_object, a.getObjectType())
.append(_properties, a.getProperties())
.isEquals();
}
@Override
public int hashCode()
{
return new HashCodeBuilder()
.append(_operation)
.append(_object)
.append(_properties)
.toHashCode();
}
@Override
public String toString()
{
return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE)
.append("operation", _operation)
.append("objectType", _object)
.append("properties", _properties)
.toString();
}
}
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