1   /**
2    * Copyright (c) 2000-2007 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.struts.PortletAction;
27  import com.liferay.portal.util.PropsFiles;
28  import com.liferay.portal.util.WebKeys;
29  import com.liferay.portlet.ActionResponseImpl;
30  import com.liferay.util.ExtPropertiesLoader;
31  
32  import java.util.Properties;
33  
34  import javax.portlet.ActionRequest;
35  import javax.portlet.ActionResponse;
36  import javax.portlet.PortletConfig;
37  import javax.portlet.PortletSession;
38  
39  import javax.servlet.http.HttpServletResponse;
40  
41  import nl.captcha.servlet.CaptchaProducer;
42  import nl.captcha.util.Helper;
43  
44  import org.apache.commons.logging.Log;
45  import org.apache.commons.logging.LogFactory;
46  import org.apache.struts.action.ActionForm;
47  import org.apache.struts.action.ActionMapping;
48  
49  /**
50   * <a href="CaptchaPortletAction.java.html"><b><i>View Source</i></b></a>
51   *
52   * @author Brian Wing Shun Chan
53   *
54   */
55  public class CaptchaPortletAction extends PortletAction {
56  
57      public CaptchaPortletAction() {
58          Properties props =  ExtPropertiesLoader.getInstance(
59              PropsFiles.CAPTCHA).getProperties();
60  
61          _producer = (CaptchaProducer)Helper.ThingFactory.loadImpl(
62              Helper.ThingFactory.CPROD, props);
63      }
64  
65      public void processAction(
66              ActionMapping mapping, ActionForm form, PortletConfig config,
67              ActionRequest req, ActionResponse res)
68          throws Exception {
69  
70          try {
71              PortletSession ses = req.getPortletSession();
72  
73              String captchaText = _producer.createText();
74  
75              ses.setAttribute(WebKeys.CAPTCHA_TEXT, captchaText);
76  
77              HttpServletResponse httpRes =
78                  ((ActionResponseImpl)res).getHttpServletResponse();
79  
80              _producer.createImage(httpRes.getOutputStream(), captchaText);
81  
82              setForward(req, ActionConstants.COMMON_NULL);
83          }
84          catch (Exception e) {
85              _log.error(e);
86          }
87      }
88  
89      private static Log _log = LogFactory.getLog(CaptchaPortletAction.class);
90  
91      private CaptchaProducer _producer;
92  
93  }