/* 
    P/P   *  Method: org.apache.roller.weblogger.ui.rendering.plugins.comments.TrackbackLinkbackCommentValidator__static_init
          */
     1  /*
     2   * Licensed to the Apache Software Foundation (ASF) under one or more
     3   *  contributor license agreements.  The ASF licenses this file to You
     4   * under the Apache License, Version 2.0 (the "License"); you may not
     5   * use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *     http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.  For additional information regarding
    15   * copyright in this work, please see the NOTICE file in the top level
    16   * directory of this distribution.
    17   */
    18  
    19  package org.apache.roller.weblogger.ui.rendering.plugins.comments;
    20  
    21  import java.io.IOException;
    22  import java.net.MalformedURLException;
    23  import java.util.ResourceBundle;
    24  import org.apache.roller.weblogger.business.WebloggerFactory;
    25  import org.apache.roller.weblogger.config.WebloggerRuntimeConfig;
    26  import org.apache.roller.weblogger.pojos.WeblogEntryComment;
    27  import org.apache.roller.weblogger.util.LinkbackExtractor;
    28  import org.apache.roller.weblogger.util.RollerMessages;
    29  
    30  /**
    31   * Validates comment if comment's URL links back to the comment's entry,
    32   * intended for use with trackbacks only.
    33   */
         /* 
    P/P   *  Method: void org.apache.roller.weblogger.ui.rendering.plugins.comments.TrackbackLinkbackCommentValidator()
          * 
          *  Postconditions:
          *    init'ed(this.bundle)
          */
    34  public class TrackbackLinkbackCommentValidator implements CommentValidator {
    35      
    36      private ResourceBundle bundle = ResourceBundle.getBundle("ApplicationResources");
    37      
    38      public String getName() {
                 /* 
    P/P           *  Method: String getName()
                  * 
                  *  Preconditions:
                  *    this.bundle != null
                  * 
                  *  Postconditions:
                  *    init'ed(return_value)
                  */
    39          return bundle.getString("comment.validator.trackbackLinkbackName");
    40      }
    41      
    42      public int validate(WeblogEntryComment comment, RollerMessages messages) {
    43          
    44          // linkback validation can be toggled at runtime, so check if it's enabled
    45          // if it's disabled then just return a score of 100
                 /* 
    P/P           *  Method: int validate(WeblogEntryComment, RollerMessages)
                  * 
                  *  Preconditions:
                  *    (soft) comment != null
                  *    (soft) messages != null
                  *    (soft) messages.mErrors != null
                  *    (soft) org/apache/roller/weblogger/util/LinkbackExtractor.mLogger != null
                  * 
                  *  Presumptions:
                  *    org.apache.roller.weblogger.business.URLStrategy:getWeblogEntryURL(...)@53 != null
                  *    org.apache.roller.weblogger.business.Weblogger:getUrlStrategy(...)@53 != null
                  *    org.apache.roller.weblogger.business.WebloggerFactory:getWeblogger(...)@53 != null
                  *    org.apache.roller.weblogger.pojos.WeblogEntryComment:getWeblogEntry(...)@53 != null
                  * 
                  *  Postconditions:
                  *    return_value in {0, 100}
                  * 
                  *  Test Vectors:
                  *    org.apache.roller.weblogger.config.WebloggerRuntimeConfig:getBooleanProperty(...)@46: {1}, {0}
                  */
    46          if(!WebloggerRuntimeConfig.getBooleanProperty("site.trackbackVerification.enabled")) {
    47              return 100;
    48          }
    49          
    50          int ret = 0;
    51          LinkbackExtractor linkback = null;
    52          try {
    53              linkback = new LinkbackExtractor(
    54                      comment.getUrl(),
    55                      WebloggerFactory.getWeblogger().getUrlStrategy().getWeblogEntryURL(
    56                      comment.getWeblogEntry().getWebsite(),
    57                      null,
    58                      comment.getWeblogEntry().getAnchor(),
    59                      true));
    60          } catch (MalformedURLException ignored1) {
    61          } catch (IOException ignored2) {}
    62          
    63          if (linkback != null && linkback.getExcerpt() != null) {
    64              ret = 100;
    65          } else {
    66              messages.addError("comment.validator.trackbackLinkbackMessage");
    67          }
    68          return ret;
    69      }
    70      
    71  }