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1   /**
2    * This file Copyright (c) 2003-2011 Magnolia International
3    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
4    *
5    *
6    * This file is dual-licensed under both the Magnolia
7    * Network Agreement and the GNU General Public License.
8    * You may elect to use one or the other of these licenses.
9    *
10   * This file is distributed in the hope that it will be
11   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12   * implied warranty of MERCHANTABILITY or FITNESS FOR A
13   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14   * Redistribution, except as permitted by whichever of the GPL
15   * or MNA you select, is prohibited.
16   *
17   * 1. For the GPL license (GPL), you can redistribute and/or
18   * modify this file under the terms of the GNU General
19   * Public License, Version 3, as published by the Free Software
20   * Foundation.  You should have received a copy of the GNU
21   * General Public License, Version 3 along with this program;
22   * if not, write to the Free Software Foundation, Inc., 51
23   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24   *
25   * 2. For the Magnolia Network Agreement (MNA), this file
26   * and the accompanying materials are made available under the
27   * terms of the MNA which accompanies this distribution, and
28   * is available at http://www.magnolia-cms.com/mna.html
29   *
30   * Any modifications to this file must keep this entire header
31   * intact.
32   *
33   */
34  package info.magnolia.cms.security.auth.callback;
35  
36  import info.magnolia.cms.util.PatternDelegate;
37  import info.magnolia.cms.util.UrlPatternDelegate;
38  
39  import javax.servlet.http.HttpServletRequest;
40  import javax.servlet.http.HttpServletResponse;
41  
42  import org.apache.commons.lang.ArrayUtils;
43  
44  
45  /**
46   * A simple "composite" callback that delegates to other callbacks based on rules (a list of {@link PatternDelegate}).
47   * It can be used to configured different callbacks for different urls, see this sample configuration for an example:
48   *
49   * <pre>
50   * + clientCallback
51   *    + patterns
52   *      + admin
53   *        + delegate
54   *          - class      info.magnolia.cms.security.auth.callback.FormClientCallback
55   *          - loginForm  /mgnl-resources/loginForm/login.html
56   *          - realmName  Magnolia
57   *        - class        info.magnolia.cms.util.UrlPatternDelegate
58   *        - url          /.magnolia*
59   *      + public
60   *        + delegate
61   *          - class      info.magnolia.cms.security.auth.callback.FormClientCallback
62   *          - loginForm  /mgnl-resources/public-login.html
63   *          - realmName  Magnolia
64   *        - class        info.magnolia.cms.util.UrlPatternDelegate
65   *        - url          /*
66   *    - class            info.magnolia.cms.security.auth.callback.CompositeCallback
67   * </pre>
68   *
69   * @author fgiust
70   * @version $Id$
71   * @deprecated since 4.5 - not needed anymore. The {@link info.magnolia.cms.security.SecurityCallbackFilter} can
72   *             be configured to accept multiple {@link HttpClientCallback}s, and the callback themselves accept a request or not.
73   */
74  public class CompositeCallback implements HttpClientCallback {
75  
76      private PatternDelegate[] patterns = new UrlPatternDelegate[0];
77  
78      @Override
79      public boolean accepts(HttpServletRequest request) {
80          for (PatternDelegate pattern : patterns) {
81              if (pattern.match(request)) {
82                  return true;
83              }
84          }
85          return false;
86      }
87  
88      /**
89       * Delegates the processing to the first matching Callback in patterns.
90       */
91      @Override
92      public void handle(HttpServletRequest request, HttpServletResponse response) {
93          for (PatternDelegate pattern : patterns) {
94              if (pattern.match(request)) {
95                  ((HttpClientCallback) pattern.getDelegate()).handle(request, response);
96                  break;
97              }
98          }
99      }
100 
101     // ----- configuration methods
102     public PatternDelegate[] getPatterns() {
103         return this.patterns;
104     }
105 
106     public void addPattern(PatternDelegate pattern) {
107         this.patterns = (PatternDelegate[]) ArrayUtils.add(this.patterns, pattern);
108     }
109 }