/* 
    P/P   *  Method: net.sourceforge.pebble.web.action.ConfirmTrackBackAction__static_init
          * 
          *  Postconditions:
          *    init'ed(log)
          */
     1  package net.sourceforge.pebble.web.action;
     2  
     3  import net.sourceforge.pebble.Constants;
     4  import net.sourceforge.pebble.api.confirmation.TrackBackConfirmationStrategy;
     5  import net.sourceforge.pebble.domain.*;
     6  import net.sourceforge.pebble.web.view.NotFoundView;
     7  import net.sourceforge.pebble.web.view.View;
     8  import net.sourceforge.pebble.web.view.impl.ConfirmTrackBackView;
     9  import net.sourceforge.pebble.web.view.impl.TrackBackLinkView;
    10  import org.apache.commons.logging.Log;
    11  import org.apache.commons.logging.LogFactory;
    12  
         /* 
    P/P   *  Method: void net.sourceforge.pebble.web.action.ConfirmTrackBackAction()
          */
    13  import javax.servlet.ServletException;
    14  import javax.servlet.http.HttpServletRequest;
    15  import javax.servlet.http.HttpServletResponse;
    16  
    17  /**
    18   * Confirms a TrackBack.
    19   *
    20   * @author    Simon Brown
    21   */
    22  public class ConfirmTrackBackAction extends AbstractTrackBackAction {
    23  
    24    /** the log used by this class */
    25    private static Log log = LogFactory.getLog(ConfirmTrackBackAction.class);
    26  
    27    /**
    28     * Peforms the processing associated with this action.
    29     *
    30     * @param request  the HttpServletRequest instance
    31     * @param response the HttpServletResponse instance
    32     * @return the name of the next view
    33     */
    34    public View process(HttpServletRequest request, HttpServletResponse response) throws ServletException {
    35      Blog blog = (Blog)getModel().get(Constants.BLOG_KEY);
    36      BlogEntry blogEntry;
    37  
    38      String entry = (String)request.getSession().getAttribute(BLOG_ENTRY_ID);
    39      if (entry == null) {
    40        return new NotFoundView();
    41      }
    42  
    43      BlogService service = new BlogService();
    44      try {
    45        blogEntry = service.getBlogEntry(blog, entry);
    46      } catch (BlogServiceException e) {
    47        throw new ServletException(e);
    48      }
    49      if (blogEntry == null) {
    50        // just send back a 404 - this is probably somebody looking for a way
    51        // to send comment spam ;-)
    52        return new NotFoundView();
    53      } else if (!blogEntry.isTrackBacksEnabled()) {
    54        return new NotFoundView();
    55      }
    56      getModel().put(Constants.BLOG_ENTRY_KEY, blogEntry);
    57  
    58      TrackBackConfirmationStrategy strategy = blog.getTrackBackConfirmationStrategy();
    59  
    60      if (strategy.isConfirmed(request)) {
    61        generateTrackBackLink(blogEntry);
    62        request.getSession().removeAttribute(BLOG_ENTRY_ID);
    63        return new TrackBackLinkView();
    64      } else {
    65        // try again!
    66        strategy.setupConfirmation(request);
    67        return new ConfirmTrackBackView();
    68      }
    69    }
    70  
    71  }