| /* |
| * 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. |
| * |
| */ |
| |
| /* |
| * AT&T - PROPRIETARY |
| * THIS FILE CONTAINS PROPRIETARY INFORMATION OF |
| * AT&T AND IS NOT TO BE DISCLOSED OR USED EXCEPT IN |
| * ACCORDANCE WITH APPLICABLE AGREEMENTS. |
| * |
| * Copyright (c) 2013 AT&T Knowledge Ventures |
| * Unpublished and Not for Publication |
| * All Rights Reserved |
| */ |
| package org.apache.openaz.xacml.pdp.policy; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.openaz.xacml.api.AttributeAssignment; |
| import org.apache.openaz.xacml.api.AttributeValue; |
| import org.apache.openaz.xacml.api.Identifier; |
| import org.apache.openaz.xacml.api.StatusCode; |
| import org.apache.openaz.xacml.pdp.eval.EvaluationContext; |
| import org.apache.openaz.xacml.pdp.eval.EvaluationException; |
| import org.apache.openaz.xacml.std.StdMutableAttributeAssignment; |
| import org.apache.openaz.xacml.std.StdStatus; |
| import org.apache.openaz.xacml.std.StdStatusCode; |
| |
| /** |
| * AttributeAssignmentExpression extends {@link PolicyComponent} to represent a XACML |
| * AttributeAssignmentExpression element. |
| */ |
| public class AttributeAssignmentExpression extends PolicyComponent { |
| private static final AttributeAssignmentResult AAR_NULL_EXPRESSION = new AttributeAssignmentResult( |
| new StdStatus( |
| StdStatusCode.STATUS_CODE_SYNTAX_ERROR, |
| "Null expression")); |
| private static final AttributeAssignmentResult AAR_NULL_EXPRESSION_RESULT = new AttributeAssignmentResult( |
| new StdStatus( |
| StdStatusCode.STATUS_CODE_PROCESSING_ERROR, |
| "Null expression result")); |
| |
| private Expression expression; |
| private Identifier attributeId; |
| private Identifier category; |
| private String issuer; |
| |
| public AttributeAssignmentExpression(StatusCode statusCodeIn, String statusMessageIn) { |
| super(statusCodeIn, statusMessageIn); |
| } |
| |
| public AttributeAssignmentExpression(StatusCode statusCodeIn) { |
| super(statusCodeIn); |
| } |
| |
| public AttributeAssignmentExpression() { |
| } |
| |
| public AttributeAssignmentExpression(Identifier categoryIn, Identifier attributeIdIn, String issuerIn, |
| Expression expressionIn) { |
| this.category = categoryIn; |
| this.attributeId = attributeIdIn; |
| this.issuer = issuerIn; |
| this.expression = expressionIn; |
| } |
| |
| public Identifier getCategory() { |
| return this.category; |
| } |
| |
| public void setCategory(Identifier identifier) { |
| this.category = identifier; |
| } |
| |
| public Identifier getAttributeId() { |
| return this.attributeId; |
| } |
| |
| public void setAttributeId(Identifier identifier) { |
| this.attributeId = identifier; |
| } |
| |
| public String getIssuer() { |
| return this.issuer; |
| } |
| |
| public void setIssuer(String string) { |
| this.issuer = string; |
| } |
| |
| public Expression getExpression() { |
| return this.expression; |
| } |
| |
| public void setExpression(Expression expressionIn) { |
| this.expression = expressionIn; |
| } |
| |
| public AttributeAssignmentResult evaluate(EvaluationContext evaluationContext, |
| PolicyDefaults policyDefaults) throws EvaluationException { |
| if (!this.validate()) { |
| return new AttributeAssignmentResult(new StdStatus(this.getStatusCode(), this.getStatusMessage())); |
| } |
| |
| Expression thisExpression = this.getExpression(); |
| if (thisExpression == null) { |
| return AAR_NULL_EXPRESSION; |
| } |
| |
| ExpressionResult thisExpressionResult = thisExpression.evaluate(evaluationContext, policyDefaults); |
| if (thisExpressionResult == null) { |
| return AAR_NULL_EXPRESSION_RESULT; |
| } else if (!thisExpressionResult.isOk()) { |
| return new AttributeAssignmentResult(thisExpressionResult.getStatus()); |
| } else { |
| List<AttributeAssignment> listAttributeAssignments = new ArrayList<AttributeAssignment>(); |
| if (thisExpressionResult.isBag()) { |
| Bag bagValues = thisExpressionResult.getBag(); |
| if (bagValues == null || bagValues.size() == 0) { |
| listAttributeAssignments.add(new StdMutableAttributeAssignment(this.getCategory(), this |
| .getAttributeId(), this.getIssuer(), null)); |
| } else { |
| Iterator<AttributeValue<?>> iterBagValues = bagValues.getAttributeValues(); |
| while (iterBagValues.hasNext()) { |
| AttributeValue<?> attributeValue = iterBagValues.next(); |
| listAttributeAssignments.add(new StdMutableAttributeAssignment(this.getCategory(), |
| this.getAttributeId(), |
| this.getIssuer(), |
| attributeValue)); |
| } |
| } |
| } else { |
| listAttributeAssignments.add(new StdMutableAttributeAssignment(this.getCategory(), this |
| .getAttributeId(), this.getIssuer(), thisExpressionResult.getValue())); |
| } |
| return new AttributeAssignmentResult(listAttributeAssignments); |
| } |
| } |
| |
| @Override |
| protected boolean validateComponent() { |
| if (this.getAttributeId() == null) { |
| this.setStatus(StdStatusCode.STATUS_CODE_SYNTAX_ERROR, "Missing AttributeId"); |
| return false; |
| } else if (this.getExpression() == null) { |
| this.setStatus(StdStatusCode.STATUS_CODE_SYNTAX_ERROR, "Missing Expression"); |
| return false; |
| } else { |
| this.setStatus(StdStatusCode.STATUS_CODE_OK, null); |
| return true; |
| } |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder stringBuilder = new StringBuilder("{"); |
| |
| stringBuilder.append("super="); |
| stringBuilder.append(super.toString()); |
| |
| Object objectToDump; |
| if ((objectToDump = this.getCategory()) != null) { |
| stringBuilder.append(",category="); |
| stringBuilder.append(objectToDump.toString()); |
| } |
| if ((objectToDump = this.getAttributeId()) != null) { |
| stringBuilder.append(",attributeId="); |
| stringBuilder.append(objectToDump.toString()); |
| } |
| if ((objectToDump = this.getExpression()) != null) { |
| stringBuilder.append(",expression="); |
| stringBuilder.append(objectToDump.toString()); |
| } |
| stringBuilder.append('}'); |
| return stringBuilder.toString(); |
| } |
| |
| } |