/**
* @private
*/
function _markCommentAsNonSpam()
{
// throw the pre-event
$this->notifyEvent(EVENT_PRE_MARK_NO_SPAM_COMMENT, array("commentId" => $this->_commentId));
$this->_view = new AdminArticleCommentsListView($this->_blogInfo, array("article" => $this->_article));
$comments = new ArticleComments();
if (!$comments->updateCommentStatus($this->_commentId, COMMENT_STATUS_NONSPAM)) {
$this->_view->setErrorMessage($this->_locale->tr("error_marking_comment_as_nonspam"));
$this->setCommonData();
$res = false;
} else {
$this->_view->setSuccessMessage($this->_locale->tr("comment_marked_as_nonspam_ok"));
$this->setCommonData();
$res = true;
// before exiting, we should get the comment and train the filter
// to recognize this as spam...
$comment = $comments->getPostComment($this->_articleId, $this->_commentId);
$bayesian = new BayesianFilterCore();
$bayesian->untrain($this->_blogInfo->getId(), $comment->getTopic(), $comment->getText(), $comment->getUserName(), $comment->getUserEmail(), $comment->getUserUrl(), true);
$bayesian->train($this->_blogInfo->getId(), $comment->getTopic(), $comment->getText(), $comment->getUserName(), $comment->getUserEmail(), $comment->getUserUrl(), false);
// throw the post-event if everythign went fine
$this->notifyEvent(EVENT_POST_MARK_NO_SPAM_COMMENT, array("commentId" => $this->_commentId));
}
return $res;
}
/**
* Given an Article object, trains the filter based on the article data
*
* @param article An Article object
* @return true
* @static
*/
function trainWithArticle($article)
{
return BayesianFilterCore::train($article->getBlog(), $article->getTopic(), $article->getText(), "", "", "", false);
}
/**
* Processes incoming requests
*
* @return A positive PipelineResult object is the comment is not spam or a negative
* one if it is.
*/
function filter()
{
$config =& Config::getConfig();
if (!$config->getValue("bayesian_filter_enabled")) {
return new PipelineResult(true);
}
// get some info
$blogInfo = $this->_pipelineRequest->getBlogInfo();
$request = $this->_pipelineRequest->getHttpRequest();
// we only have to filter the contents if the user is posting a comment
// so there's no point in doing anything else if that's not the case
if ($request->getValue("op") != "AddComment") {
$result = new PipelineResult();
return $result;
}
// text and topic of the comment
$commentText = $request->getValue("commentText");
$commentTopic = $request->getValue("commentTopic");
$userName = $request->getValue("userName");
$userEmail = $request->getValue("userEmail");
$userUrl = $request->getValue("userUrl");
$articleId = $request->getValue("articleId");
$parentId = $request->getValue("parentId");
if ($parentId == "") {
$parentId = 0;
}
$spamicity = $this->getSpamProbability($blogInfo->getId(), $commentTopic, $commentText, $userName, $userEmail, $userUrl);
if ($spamicity >= $config->getValue("bayesian_filter_spam_probability_treshold")) {
$result = new PipelineResult(false, HIGH_SPAM_PROBABILITY, "You cannot post this message. Anti-spam filter has blocked it.");
// now we need to check what we have to do with this comment... either throw it away
// or keep it in the database
// this piece of code shouldn't really go here, but it's easier than letting
// the AddComment action that there was actually a comment and that it should
// still be added but marked as spam and so on... sometimes breaking a few
// rules makes things easier :)
if ($config->getValue("bayesian_filter_spam_comments_action") == BAYESIAN_FILTER_KEEP_COMMENT_ACTION) {
$comments = new ArticleComments();
$clientIp = Client::getIp();
$comment = new UserComment($articleId, $parentId, $commentTopic, $commentText, null, $userName, $userEmail, $userUrl, $clientIp, 0, COMMENT_STATUS_SPAM);
$comments->addComment($comment);
} else {
// nothing to do here, simply throw the comment away
}
$spam = true;
} else {
$result = new PipelineResult(true);
$spam = false;
}
// train the filter with the message, be it spam or not...
BayesianFilterCore::train($blogInfo->getId(), $commentTopic, $commentText, $userName, $userEmail, $userUrl, $spam);
//print "<h1>" . number_format($spamicity * 100, 0) . "% of spamicity</h1>";
return $result;
}
/**
* marks all the comments from the given blog (or all of them
* if blogId==0) as non-spam. This is good food for the
* filter since then it knows which things should be allowed.
*
* @static
* @param blogId The blog
* @return Always true
*/
function markCommentsAsNonSpam($blogId = 0)
{
// first, make an array with the comments that should be marked
$comments = $this->_getAllComments($blogId);
// now, loop through each one of them marking the contents as
// non-spam
$bayesian = new BayesianFilterCore();
foreach ($comments as $comment) {
$bayesian->train($comment["blog_id"], $comment["topic"], $comment["text"], $comment["user_name"], $comment["user_email"], $comment["user_url"], false);
}
return true;
}
