View Javadoc
1   /**
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements. See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership. The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License. You may obtain a copy of the License at
9    *
10   * http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied. See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.wss4j.policy.builders;
20  
21  import org.apache.neethi.Assertion;
22  import org.apache.neethi.AssertionBuilderFactory;
23  import org.apache.neethi.builders.AssertionBuilder;
24  import org.apache.wss4j.policy.SP13Constants;
25  import org.apache.wss4j.policy.SPConstants;
26  import org.apache.wss4j.policy.SPUtils;
27  import org.apache.wss4j.policy.model.Header;
28  import org.apache.wss4j.policy.model.RequiredParts;
29  import org.w3c.dom.Element;
30  
31  import javax.xml.namespace.QName;
32  import java.util.ArrayList;
33  import java.util.List;
34  
35  public class RequiredPartsBuilder implements AssertionBuilder<Element> {
36  
37      @Override
38      public Assertion build(Element element, AssertionBuilderFactory factory) throws IllegalArgumentException {
39  
40          final SPConstants.SPVersion spVersion = SPConstants.SPVersion.getSPVersion(element.getNamespaceURI());
41  
42          final List<Header> headers = getHeaders(element, false, spVersion);
43          RequiredParts requiredParts = new RequiredParts(spVersion, headers);
44          requiredParts.setOptional(SPUtils.isOptional(element));
45          requiredParts.setIgnorable(SPUtils.isIgnorable(element));
46          return requiredParts;
47      }
48  
49      protected List<Header> getHeaders(Element element, boolean ignoreNameElement, SPConstants.SPVersion spVersion) {
50          List<Header> headers = new ArrayList<>();
51          Element child = SPUtils.getFirstChildElement(element);
52          while (child != null) {
53              if (SPConstants.HEADER.equals(child.getLocalName())
54                      && spVersion.getNamespace().equals(child.getNamespaceURI())) {
55                  String headerName = child.getAttributeNS(null, SPConstants.NAME);
56                  if (headerName.length() == 0) {
57                      if (ignoreNameElement) {
58                          headerName = null;
59                      } else {
60                          throw new IllegalArgumentException("sp:" + element.getLocalName()
61                              + "/sp:" + child.getLocalName() + " must have a Name attribute");
62                      }
63                  }
64                  String headerNamespace = child.getAttributeNS(null, SPConstants.NAMESPACE);
65                  if (headerNamespace == null || headerNamespace.length() == 0) {
66                      throw new IllegalArgumentException(SPConstants.ERR_INVALID_POLICY);
67                  }
68                  headers.add(new Header(headerName, headerNamespace));
69              }
70              child = SPUtils.getNextSiblingElement(child);
71          }
72          return headers;
73      }
74  
75      @Override
76      public QName[] getKnownElements() {
77          return new QName[]{SP13Constants.REQUIRED_PARTS};
78      }
79  }