View Javadoc

    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.opensaml.samlext.saml2mdui.PrivacyStatementURL;
    26  import org.slf4j.Logger;
    27  import org.slf4j.LoggerFactory;
    28
    29  /** Service PrivacyURL - directly from the metadata if present.*/
    30  public class ServicePrivacyURLTag extends ServiceTagSupport {
    31
    32      /** checkstyle needs serial version UID. */
    33      private static final long serialVersionUID = 1706444251504545781L;
    34
    35      /** Class logger. */
    36      private static Logger log = LoggerFactory.getLogger(ServicePrivacyURLTag.class);
    37
    38      /** Bean storage for the link text attribute. */
    39      private static String linkText;
    40
    41      /** Bean setter  for the link text attribute.
    42       * @param text the link text to put in
    43       */
    44      public void setLinkText(String text) {
    45          linkText = text;
    46      }
    47
    48      /**
    49       * look for the &lt;PrivacyURL&gt; in the &lt;UIInfo&gt;.
    50       * @return null or an appropriate string.
    51       */
    52      private String getPrivacyURLFromUIIinfo() {
    53          String lang = getBrowserLanguage();
    54
    55          if (getSPUIInfo() != null && getSPUIInfo().getPrivacyStatementURLs() != null) {
    56              for (PrivacyStatementURL privacyURL:getSPUIInfo().getPrivacyStatementURLs()) {
    57                  if (log.isDebugEnabled()){
    58                      log.debug("Found PrivacyStatementURL in UIInfo, language=" + privacyURL.getXMLLang());
    59                  }
    60                  if (privacyURL.getXMLLang().equals(lang)) {
    61                      //
    62                      // Found it
    63                      //
    64                      if (log.isDebugEnabled()){
    65                          log.debug("returning URL from UIInfo " + privacyURL.getURI().getLocalString());
    66                      }
    67                      return privacyURL.getURI().getLocalString();
    68                  }
    69              }
    70              if (log.isDebugEnabled()){
    71                  log.debug("No relevant PrivacyStatementURL in UIInfo");
    72              }
    73          }
    74          return null;
    75      }
    76
    77      @Override
    78
    79      public int doEndTag() throws JspException {
    80
    81          String privacyURL = getPrivacyURLFromUIIinfo();
    82
    83          try {
    84              if (null == privacyURL) {
    85                  BodyContent bc = getBodyContent();
    86                  if (null != bc) {
    87                      JspWriter ew= bc.getEnclosingWriter();
    88                      if (ew != null) {
    89                          bc.writeOut(ew);
    90                      }
    91                  }
    92              } else {
    93                  pageContext.getOut().print(buildHyperLink(privacyURL, linkText));
    94              }
    95          } catch (IOException e) {
    96              log.warn("Error generating Description");
    97              throw new JspException("EndTag", e);
    98          }
    99          return super.doEndTag();
    100     }
    101
    102 }