/* 
    P/P   *  Method: net.sourceforge.pebble.web.action.AddTrackBackAction__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.web.action;
    33  
    34  import net.sourceforge.pebble.Constants;
    35  import net.sourceforge.pebble.trackback.TrackBackTokenManager;
    36  import net.sourceforge.pebble.domain.*;
    37  import net.sourceforge.pebble.web.view.View;
    38  import net.sourceforge.pebble.web.view.impl.TrackBackResponseView;
    39  import org.apache.commons.logging.Log;
    40  import org.apache.commons.logging.LogFactory;
    41  
         /* 
    P/P   *  Method: void net.sourceforge.pebble.web.action.AddTrackBackAction()
          */
    42  import javax.servlet.ServletException;
    43  import javax.servlet.http.HttpServletRequest;
    44  import javax.servlet.http.HttpServletResponse;
    45  
    46  /**
    47   * Adds a TrackBack to an existing blog entry.
    48   *
    49   * @author    Simon Brown
    50   */
    51  public class AddTrackBackAction extends Action {
    52  
    53    /** the log used by this class */
    54    private static Log log = LogFactory.getLog(AddTrackBackAction.class);
    55  
    56    /**
    57     * Peforms the processing associated with this action.
    58     *
    59     * @param request  the HttpServletRequest instance
    60     * @param response the HttpServletResponse instance
    61     * @return the name of the next view
    62     */
    63    public View process(HttpServletRequest request, HttpServletResponse response) throws ServletException {
    64      try {
               /* 
    P/P         *  Method: View process(HttpServletRequest, HttpServletResponse)
                * 
                *  Preconditions:
                *    request != null
                *    this.model != null
                *    this.model.data != null
                *    (soft) net.sourceforge.pebble.trackback.TrackBackTokenManager__static_init.new TrackBackTokenManager(TrackBackTokenManager__static_init#1).tokens != null
                * 
                *  Presumptions:
                *    net.sourceforge.pebble.domain.BlogService:getBlogEntry(...)@86 != null
                * 
                *  Postconditions:
                *    return_value in Addr_Set{&new TrackBackResponseView(process#9),&new TrackBackResponseView(process#7),&new TrackBackResponseView(process#4),&new TrackBackResponseView(process#2)}
                *    new TrackBackResponseView(process#2) num objects <= 1
                *    new TrackBackResponseView(process#4) num objects <= 1
                *    new TrackBackResponseView(process#7) num objects <= 1
                *    new TrackBackResponseView(process#9) num objects <= 1
                * 
                *  Test Vectors:
                *    java.lang.String:length(...)@76: {1..232-1}, {0}
                *    javax.servlet.http.HttpServletRequest:getParameter(...)@72: Addr_Set{null}, Inverse{null}
                *    net.sourceforge.pebble.domain.BlogEntry:isTrackBacksEnabled(...)@89: {0}, {1}
                */
    65        Blog blog = (Blog)getModel().get(Constants.BLOG_KEY);
    66        BlogEntry blogEntry = null;
    67  
    68        String entry = request.getParameter("entry");
    69        String token = request.getParameter("token");
    70        String title = request.getParameter("title");
    71        String excerpt = request.getParameter("excerpt");
    72        String url = request.getParameter("url");
    73        String blogName = request.getParameter("blog_name");
    74        String ipAddress = request.getRemoteAddr();
    75  
    76        if (url == null || url.length() == 0) {
    77          getModel().put("errorCode", new Integer(1));
    78          getModel().put("message", "The URL (permalink) must be specified for TrackBacks");
    79          return new TrackBackResponseView();
    80        } else if (!TrackBackTokenManager.getInstance().isValid(token)) {
    81          getModel().put("errorCode", new Integer(1));
    82          getModel().put("message", "The token has expired or is invalid");
    83          return new TrackBackResponseView();
    84        } else {
    85          BlogService service = new BlogService();
    86          blogEntry = service.getBlogEntry(blog, entry);
    87  
    88          // only add the TrackBack if they are enabled for the entry
    89          if (blogEntry.isTrackBacksEnabled()) {
    90            TrackBack trackBack = blogEntry.createTrackBack(title, excerpt, url, blogName, ipAddress);
    91            blogEntry.addTrackBack(trackBack);
    92            service.putBlogEntry(blogEntry);
    93            TrackBackTokenManager.getInstance().expire(token);
    94  
    95            getModel().put("errorCode", new Integer(0));
    96            return new TrackBackResponseView();
    97          } else {
    98            getModel().put("errorCode", new Integer(1));
    99            getModel().put("message", "TrackBacks are not enabled for this blog entry");
   100            return new TrackBackResponseView();
   101          }
   102        }
   103      } catch (Exception e) {
   104        log.error(e.getMessage(), e);
   105        e.printStackTrace();
   106        throw new ServletException(e);
   107      }
   108    }
   109  
   110  }