1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.captcha;
24  
25  import com.liferay.portal.struts.ActionConstants;
26  import com.liferay.portal.util.PropsFiles;
27  import com.liferay.portal.util.WebKeys;
28  import com.liferay.util.ExtPropertiesLoader;
29  
30  import java.util.Properties;
31  
32  import javax.servlet.http.HttpServletRequest;
33  import javax.servlet.http.HttpServletResponse;
34  import javax.servlet.http.HttpSession;
35  import javax.servlet.jsp.PageContext;
36  
37  import nl.captcha.servlet.CaptchaProducer;
38  import nl.captcha.util.Helper;
39  
40  import org.apache.struts.action.Action;
41  import org.apache.struts.action.ActionForm;
42  import org.apache.struts.action.ActionForward;
43  import org.apache.struts.action.ActionMapping;
44  
45  /**
46   * <a href="CaptchaPortalAction.java.html"><b><i>View Source</i></b></a>
47   *
48   * @author Brian Wing Shun Chan
49   *
50   */
51  public class CaptchaPortalAction extends Action {
52  
53      public CaptchaPortalAction() {
54          Properties props =  ExtPropertiesLoader.getInstance(
55              PropsFiles.CAPTCHA).getProperties();
56  
57          _producer = (CaptchaProducer)Helper.ThingFactory.loadImpl(
58              Helper.ThingFactory.CPROD, props);
59      }
60  
61      public ActionForward execute(
62              ActionMapping mapping, ActionForm form, HttpServletRequest req,
63              HttpServletResponse res)
64          throws Exception {
65  
66          try {
67              HttpSession ses = req.getSession();
68  
69              String captchaText = _producer.createText();
70  
71              ses.setAttribute(WebKeys.CAPTCHA_TEXT, captchaText);
72  
73              _producer.createImage(res.getOutputStream(), captchaText);
74  
75              return null;
76          }
77          catch (Exception e) {
78              req.setAttribute(PageContext.EXCEPTION, e);
79  
80              return mapping.findForward(ActionConstants.COMMON_ERROR);
81          }
82      }
83  
84      private CaptchaProducer _producer;
85  
86  }