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1   /*
2    * Licensed to the University Corporation for Advanced Internet Development, 
3    * Inc. (UCAID) under one or more contributor license agreements.  See the 
4    * NOTICE file distributed with this work for additional information regarding
5    * copyright ownership. The UCAID licenses this file to You under the Apache 
6    * License, Version 2.0 (the "License"); you may not use this file except in 
7    * compliance with the License.  You may obtain a copy of the License at
8    *
9    *    http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package edu.internet2.middleware.shibboleth.idp.ui;
19  
20  import java.io.IOException;
21  
22  import javax.servlet.jsp.JspException;
23  import javax.servlet.jsp.JspWriter;
24  import javax.servlet.jsp.tagext.BodyContent;
25  
26  import org.owasp.esapi.ESAPI;
27  import org.owasp.esapi.Encoder;
28  import org.slf4j.Logger;
29  import org.slf4j.LoggerFactory;
30  
31  
32  /**
33   * Display the serviceName.
34   * 
35   * This is taken in order
36   *  1) From the mdui
37   *  2) AttributeConsumeService
38   *  3) HostName from the EntityId
39   *  4) EntityId.
40   */
41  public class ServiceNameTag extends ServiceTagSupport {
42  
43      /** checkstyle requires one of these. */
44      private static final long serialVersionUID = 8883158293402992407L;
45      /** Class logger. */
46      private static Logger log = LoggerFactory.getLogger(ServiceNameTag.class);
47      
48      /** what to emit if the jsp has nothing. */
49      private static final String DEFAULT_VALUE = "Unspecified Service Provider";
50  
51      @Override
52      public int doStartTag() throws JspException {
53         
54          try {
55              String rawServiceName = getServiceName();
56              
57              Encoder esapiEncoder = ESAPI.encoder();
58              
59              String serviceName = esapiEncoder.encodeForHTML(rawServiceName);
60              
61              if (null == serviceName) {
62                  BodyContent bc = getBodyContent();
63                  boolean written = false;
64                  if (null != bc) {
65                      JspWriter ew= bc.getEnclosingWriter();
66                      if (ew != null) {
67                          bc.writeOut(ew);
68                          written = true;
69                      }
70                  }
71                  if (!written) {
72                      pageContext.getOut().print(DEFAULT_VALUE);
73                  }
74              } else {
75                  pageContext.getOut().print(serviceName);
76              }
77          } catch (IOException e) {
78              log.warn("Error generating name");
79              throw new JspException("StartTag", e);
80          }
81          return super.doStartTag();
82      }
83  }