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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.authn.provider;
19  
20  import java.io.IOException;
21  
22  import javax.servlet.http.HttpServletRequest;
23  import javax.servlet.http.HttpServletResponse;
24  
25  import org.slf4j.Logger;
26  import org.slf4j.LoggerFactory;
27  
28  import edu.internet2.middleware.shibboleth.idp.util.HttpServletHelper;
29  
30  /**
31   * Authentication Handler that redirects to servlet protected by a Web Single-Sign-On system.
32   */
33  public class RemoteUserLoginHandler extends AbstractLoginHandler {
34  
35      /** Class logger. */
36      private final Logger log = LoggerFactory.getLogger(RemoteUserLoginHandler.class);
37  
38      /** The URL of the SSO-protected servlet. */
39      private String servletURL;
40  
41      /**
42       * Set the SSO-protected servlet's URL.
43       * 
44       * @param url The URL of the SSO-protected servlet.
45       */
46      public void setServletURL(String url) {
47          servletURL = url;
48      }
49  
50      /**
51       * Get the URL of the SSO-protected servlet.
52       * 
53       * @return The URL of the SSO-protected servlet.
54       */
55      public String getServletURL() {
56          return servletURL;
57      }
58  
59      /** {@inheritDoc} */
60      public void login(HttpServletRequest httpRequest, HttpServletResponse httpResponse) {
61  
62          // forward control to the servlet.
63          try {
64              String profileUrl = HttpServletHelper.getContextRelativeUrl(httpRequest, servletURL).buildURL();
65  
66              log.debug("Redirecting to {}", profileUrl);
67              httpResponse.sendRedirect(profileUrl);
68              return;
69          } catch (IOException ex) {
70              log.error("Unable to redirect to remote user authentication servlet.", ex);
71          }
72      }
73  }