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.util.PortalUtil;
26  import com.liferay.portal.util.WebKeys;
27  
28  import javax.servlet.http.HttpServletRequest;
29  import javax.servlet.http.HttpServletResponse;
30  import javax.servlet.http.HttpSession;
31  
32  import nl.captcha.servlet.CaptchaProducer;
33  
34  import org.apache.struts.action.Action;
35  import org.apache.struts.action.ActionForm;
36  import org.apache.struts.action.ActionForward;
37  import org.apache.struts.action.ActionMapping;
38  
39  /**
40   * <a href="CaptchaPortalAction.java.html"><b><i>View Source</i></b></a>
41   *
42   * @author Brian Wing Shun Chan
43   *
44   */
45  public class CaptchaPortalAction extends Action {
46  
47      public ActionForward execute(
48              ActionMapping mapping, ActionForm form, HttpServletRequest request,
49              HttpServletResponse response)
50          throws Exception {
51  
52          try {
53              HttpSession session = request.getSession();
54  
55              CaptchaProducer captchaProducer = CaptchaUtil.getCaptchaProducer();
56  
57              String captchaText = captchaProducer.createText();
58  
59              session.setAttribute(WebKeys.CAPTCHA_TEXT, captchaText);
60  
61              captchaProducer.createImage(
62                  response.getOutputStream(), captchaText);
63  
64              return null;
65          }
66          catch (Exception e) {
67              PortalUtil.sendError(e, request, response);
68  
69              return null;
70          }
71      }
72  
73  }