dcFilterDuplicate/inc/class.filter.duplicate.php

139 lines
3.6 KiB
PHP

<?php
# -- BEGIN LICENSE BLOCK ----------------------------------
#
# This file is part of dcFilterDuplicate, a plugin for Dotclear 2.
#
# Copyright (c) 2009-2015 Jean-Christian Denis and contributors
#
# Licensed under the GPL version 2.0 license.
# A copy of this license is available in LICENSE file or at
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
#
# -- END LICENSE BLOCK ------------------------------------
if (!defined('DC_RC_PATH')) {
return null;
}
/**
* @ingroup DC_PLUGIN_DCFILTERDUPLICATE
* @brief Filter duplicate comments on multiblogs.
* @since 2.6
*/
class dcFilterDuplicate extends dcSpamFilter
{
public $name = 'Duplicate comment filter';
public $has_gui = true;
protected function setInfo()
{
$this->name = __('dcFilterDuplicate');
$this->description = __('Same comments on others blogs of a multiblog');
}
public function isSpam($type, $author, $email, $site, $ip, $content, $post_id, &$status)
{
if ($type != 'comment') {
return null;
}
$minlen = abs((integer) $this->core->blog->settings->dcFilterDuplicate->dcfilterduplicate_minlen);
if (strlen($content) < $minlen) {
return null;
}
try {
if ($this->isDuplicate($content, $ip)) {
$this->markDuplicate($content, $ip);
$status = 'Duplicate on other blog';
return true;
}
else {
return null;
}
}
catch (Exception $e) {
throw new Exception($e->getMessage());
}
}
public function isDuplicate($content, $ip)
{
$rs = $this->core->con->select(
'SELECT C.comment_id '.
'FROM '.$this->core->prefix.'comment C '.
'LEFT JOIN '.$this->core->prefix.'post P ON C.post_id=P.post_id '.
"WHERE P.blog_id != '".$this->core->blog->id."' ".
"AND C.comment_content='".$this->core->con->escape($content)."' ".
"AND C.comment_ip='".$ip."' "
);
return !$rs->isEmpty();
}
public function markDuplicate($content, $ip)
{
$cur = $this->core->con->openCursor($this->core->prefix.'comment');
$this->core->con->writeLock($this->core->prefix.'comment');
$cur->comment_status = -2;
$cur->comment_spam_status = 'Duplicate on other blog';
$cur->comment_spam_filter = 'dcFilterDuplicate';
$cur->update(
"WHERE comment_content='".$this->core->con->escape($content)."' ".
"AND comment_ip='".$ip."' "
);
$this->core->con->unlock();
$this->triggerOtherBlogs($content, $ip);
}
public function gui($url)
{
$minlen = abs((integer) $this->core->blog->settings->dcFilterDuplicate->dcfilterduplicate_minlen);
if (isset($_POST['dcfilterduplicate_minlen'])) {
$minlen = abs((integer) $_POST['dcfilterduplicate_minlen']);
$this->core->blog->settings->dcFilterDuplicate->put(
'dcfilterduplicate_minlen',
$minlen,
'integer'
);
dcPage::addSuccessNotice(__('Configuration successfully updated.'));
http::redirect($url);
}
$res =
'<form action="'.html::escapeURL($url).'" method="post">'.
'<p><label class="classic">'.__('Minimum content length before check for duplicate:').'<br />'.
form::field(array('dcfilterduplicate_minlen'), 65, 255, $minlen).
'</label></p>'.
'<p><input type="submit" name="save" value="'.__('Save').'" />'.
$this->core->formNonce().'</p>'.
'</form>';
return $res;
}
public function triggerOtherBlogs($content, $ip)
{
$rs = $this->core->con->select(
'SELECT P.blog_id '.
'FROM '.$this->core->prefix.'comment C '.
'LEFT JOIN '.$this->core->prefix.'post P ON C.post_id=P.post_id '.
"WHERE C.comment_content='".$this->core->con->escape($content)."' ".
"AND C.comment_ip='".$ip."' "
);
while ($rs->fetch()) {
$b = new dcBlog($this, $rs->blog_id);
$b->triggerBlog();
unset($b);
}
}
}