/* 
    P/P   *  Method: net.sourceforge.pebble.confirmation.ImageCaptchaConfirmationStrategy__static_init
          * 
          *  Postconditions:
          *    init'ed(log)
          */
     1  /*
     2   * Copyright (c) 2003-2006, Simon Brown
     3   * All rights reserved.
     4   *
     5   * Redistribution and use in source and binary forms, with or without
     6   * modification, are permitted provided that the following conditions are met:
     7   *
     8   *   - Redistributions of source code must retain the above copyright
     9   *     notice, this list of conditions and the following disclaimer.
    10   *
    11   *   - Redistributions in binary form must reproduce the above copyright
    12   *     notice, this list of conditions and the following disclaimer in
    13   *     the documentation and/or other materials provided with the
    14   *     distribution.
    15   *
    16   *   - Neither the name of Pebble nor the names of its contributors may
    17   *     be used to endorse or promote products derived from this software
    18   *     without specific prior written permission.
    19   *
    20   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    21   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    22   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    23   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
    24   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    25   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    26   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    27   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    28   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    29   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    30   * POSSIBILITY OF SUCH DAMAGE.
    31   */
    32  package net.sourceforge.pebble.confirmation;
    33  
         /* 
    P/P   *  Method: void net.sourceforge.pebble.confirmation.ImageCaptchaConfirmationStrategy()
          */
    34  import com.octo.captcha.service.CaptchaServiceException;
    35  import org.apache.commons.logging.Log;
    36  import org.apache.commons.logging.LogFactory;
    37  
    38  import javax.servlet.http.HttpServletRequest;
    39  
    40  /**
    41   * Image captcha comment confirmation strategy.
    42   *
    43   * @author    Simon Brown
    44   */
    45  public class ImageCaptchaConfirmationStrategy extends AbstractConfirmationStrategy {
    46  
    47    /** the log used by this class */
    48    private static final Log log = LogFactory.getLog(ImageCaptchaConfirmationStrategy.class);
    49  
    50    /**
    51     * Called before showing the confirmation page.
    52     *
    53     * @param request the HttpServletRequest used in the confirmation
    54     */
    55    public void setupConfirmation(HttpServletRequest request) {
           /* 
    P/P     *  Method: void setupConfirmation(HttpServletRequest)
            */
    56    }
    57  
    58    /**
    59     * Gets the URI of the confirmation page.
    60     *
    61     * @return a URI, relative to the web application root.
    62     */
           /* 
    P/P     *  Method: String getUri()
            * 
            *  Postconditions:
            *    return_value == &".WEB-INF.jsp.confirmation.imageCaptcha.jsp"
            */
    63    public String getUri() {
    64      return "/WEB-INF/jsp/confirmation/imageCaptcha.jsp";
    65    }
    66  
    67    /**
    68     * Called to determine whether confirmation was successful.
    69     *
    70     * @param request   the HttpServletRequest used in the confirmation
    71     * @return  true if the confirmation was successful, false otherwise
    72     */
    73    public boolean isConfirmed(HttpServletRequest request) {
             /* 
    P/P       *  Method: bool isConfirmed(HttpServletRequest)
              * 
              *  Preconditions:
              *    request != null
              * 
              *  Presumptions:
              *    com.octo.captcha.service.image.ImageCaptchaService:validateResponseForID(...)@77 != null
              *    javax.servlet.http.HttpServletRequest:getSession(...)@74 != null
              *    org.apache.commons.logging.LogFactory:getLog(...)@48 != null
              * 
              *  Postconditions:
              *    init'ed(return_value)
              */
    74      String captchaId = request.getSession().getId();
    75      String response = request.getParameter("j_captcha_response");
    76      try {
    77        return CaptchaService.getInstance().validateResponseForID(captchaId, response);
    78      } catch (CaptchaServiceException e) {
    79        ImageCaptchaConfirmationStrategy.log.error("Exception encountered", e);
    80      }
    81  
    82      return false;
    83    }
    84  
    85  }