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1   /*
2    * Copyright [2006] [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.authn.provider;
18  
19  import java.io.IOException;
20  
21  import javax.servlet.http.HttpServletRequest;
22  import javax.servlet.http.HttpServletResponse;
23  
24  import org.slf4j.Logger;
25  import org.slf4j.LoggerFactory;
26  
27  import edu.internet2.middleware.shibboleth.idp.util.HttpServletHelper;
28  
29  /**
30   * Authentication Handler that redirects to servlet protected by a Web Single-Sign-On system.
31   */
32  public class RemoteUserLoginHandler extends AbstractLoginHandler {
33  
34      /** Class logger. */
35      private final Logger log = LoggerFactory.getLogger(RemoteUserLoginHandler.class);
36  
37      /** The URL of the SSO-protected servlet. */
38      private String servletURL;
39  
40      /**
41       * Set the SSO-protected servlet's URL.
42       * 
43       * @param url The URL of the SSO-protected servlet.
44       */
45      public void setServletURL(String url) {
46          servletURL = url;
47      }
48  
49      /**
50       * Get the URL of the SSO-protected servlet.
51       * 
52       * @return The URL of the SSO-protected servlet.
53       */
54      public String getServletURL() {
55          return servletURL;
56      }
57  
58      /** {@inheritDoc} */
59      public void login(HttpServletRequest httpRequest, HttpServletResponse httpResponse) {
60  
61          // forward control to the servlet.
62          try {
63              String profileUrl = HttpServletHelper.getContextRelativeUrl(httpRequest, servletURL).buildURL();
64  
65              log.debug("Redirecting to {}", profileUrl);
66              httpResponse.sendRedirect(profileUrl);
67              return;
68          } catch (IOException ex) {
69              log.error("Unable to redirect to remote user authentication servlet.", ex);
70          }
71      }
72  }