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    1   /*
    2    * Copyright 2011 University Corporation for Advanced Internet Development, Inc.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    * http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16
    17  package edu.internet2.middleware.shibboleth.idp.ui;
    18
    19  import java.io.IOException;
    20
    21  import javax.servlet.jsp.JspException;
    22  import javax.servlet.jsp.JspWriter;
    23  import javax.servlet.jsp.tagext.BodyContent;
    24
    25  import org.owasp.esapi.ESAPI;
    26  import org.owasp.esapi.Encoder;
    27  import org.slf4j.Logger;
    28  import org.slf4j.LoggerFactory;
    29
    30
    31  /**
    32   * Display the serviceName.
    33   *
    34   * This is taken in order
    35   *  1) From the mdui
    36   *  2) AttributeConsumeService
    37   *  3) HostName from the EntityId
    38   *  4) EntityId.
    39   */
    40  public class ServiceNameTag extends ServiceTagSupport {
    41
    42      /** checkstyle requires one of these. */
    43      private static final long serialVersionUID = 8883158293402992407L;
    44      /** Class logger. */
    45      private static Logger log = LoggerFactory.getLogger(ServiceNameTag.class);
    46
    47      /** what to emit if the jsp has nothing. */
    48      private static final String DEFAULT_VALUE = "Unspecified Service Provider";
    49
    50      @Override
    51      public int doStartTag() throws JspException {
    52
    53          try {
    54              String rawServiceName = getServiceName();
    55
    56              Encoder esapiEncoder = ESAPI.encoder();
    57
    58              String serviceName = esapiEncoder.encodeForHTML(rawServiceName);
    59
    60              if (null == serviceName) {
    61                  BodyContent bc = getBodyContent();
    62                  boolean written = false;
    63                  if (null != bc) {
    64                      JspWriter ew= bc.getEnclosingWriter();
    65                      if (ew != null) {
    66                          bc.writeOut(ew);
    67                          written = true;
    68                      }
    69                  }
    70                  if (!written) {
    71                      pageContext.getOut().print(DEFAULT_VALUE);
    72                  }
    73              } else {
    74                  pageContext.getOut().print(serviceName);
    75              }
    76          } catch (IOException e) {
    77              log.warn("Error generating name");
    78              throw new JspException("StartTag", e);
    79          }
    80          return super.doStartTag();
    81      }
    82  }