source: plugins/antispam/filters/class.dc.filter.words.php @ 1512:ef727a109ce6

<?php
# -- BEGIN LICENSE BLOCK ---------------------------------------
#
# This file is part of Antispam, a plugin for Dotclear 2.
#
# Copyright (c) 2003-2013 Olivier Meunier & Association Dotclear
# Licensed under the GPL version 2.0 license.
# See LICENSE file or
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
#
# -- END LICENSE BLOCK -----------------------------------------
if (!defined('DC_RC_PATH')) { return; }

class dcFilterWords extends dcSpamFilter
{
     public $has_gui = true;
     public $name = 'Bad Words';

     private $con;
     private $table;

     public function __construct($core)
     {
          parent::__construct($core);
          $this->con =& $core->con;
          $this->table = $core->prefix.'spamrule';
     }

     protected function setInfo()
     {
          $this->description = __('Words Blacklist');
     }

     public function getStatusMessage($status,$comment_id)
     {
          return sprintf(__('Filtered by %1$s with word %2$s.'),$this->guiLink(),'<em>'.$status.'</em>');
     }

     public function isSpam($type,$author,$email,$site,$ip,$content,$post_id,&$status)
     {
          $str = $author.' '.$email.' '.$site.' '.$content;

          $rs = $this->getRules();

          while ($rs->fetch())
          {
               $word = $rs->rule_content;

               if (substr($word,0,1) == '/' && substr($word,-1,1) == '/') {
                    $reg = substr(substr($word,1),0,-1);
               } else {
                    $reg = preg_quote($word, '/');
                    $reg = '(^|\s+|>|<)'.$reg.'(>|<|\s+|\.|$)';
               }

               if (preg_match('/'.$reg.'/msiu',$str)) {
                    $status = $word;
                    return true;
               }
          }
     }

     public function gui($url)
     {
          $core =& $this->core;

          # Create list
          if (!empty($_POST['createlist']))
          {
               try {
                    $this->defaultWordsList();
                    http::redirect($url.'&list=1');
               } catch (Exception $e) {
                    $core->error->add($e->getMessage());
               }
          }

          # Adding a word
          if (!empty($_POST['swa']))
          {
               $globalsw = !empty($_POST['globalsw']) && $core->auth->isSuperAdmin();

               try {
                    $this->addRule($_POST['swa'],$globalsw);
                    http::redirect($url.'&added=1');
               } catch (Exception $e) {
                    $core->error->add($e->getMessage());
               }
          }

          # Removing spamwords
          if (!empty($_POST['swd']) && is_array($_POST['swd']))
          {
               try {
                    $this->removeRule($_POST['swd']);
                    http::redirect($url.'&removed=1');
               } catch (Exception $e) {
                    $core->error->add($e->getMessage());
               }
          }

          /* DISPLAY
          ---------------------------------------------- */
          $res = '';

          if (!empty($_GET['list'])) {
               $res .= dcPage::message(__('Words have been successfully added.'),true,false,false);
          }
          if (!empty($_GET['added'])) {
               $res .= dcPage::message(__('Word has been successfully added.'),true,false,false);
          }
          if (!empty($_GET['removed'])) {
               $res .= dcPage::message(__('Words have been successfully removed.'),true,false,false);
          }

          $res .=
          '<form action="'.html::escapeURL($url).'" method="post" class="fieldset">'.
          '<p><label class="classic" for="swa">'.__('Add a word ').'</label> '.form::field('swa',20,128);

          if ($core->auth->isSuperAdmin()) {
               $res .= '<label class="classic" for="globalsw">'.form::checkbox('globalsw',1).'</label> '.
               __('Global word (used for all blogs)');
          }

          $res .=
          $core->formNonce().
          '</p>'.
          '<p><input type="submit" value="'.__('Add').'"/></p>'.
          '</form>';

          $rs = $this->getRules();
          if ($rs->isEmpty())
          {
               $res .= '<p><strong>'.__('No word in list.').'</strong></p>';
          }
          else
          {
               $res .=
               '<form action="'.html::escapeURL($url).'" method="post" class="fieldset">'.
               '<h3>' . __('List of bad words') . '</h3>'.
               '<div class="antispam">';

               $res_global = '';
               $res_local = '';
               while ($rs->fetch())
               {
                    $disabled_word = false;

                    $p_style = '';

                    if (!$rs->blog_id) {
                         $disabled_word = !$core->auth->isSuperAdmin();
                         $p_style .= ' global';
                    }

                    $item = '<p class="'.$p_style.'"><label class="classic" for="word-'.$rs->rule_id.'">'.
                         form::checkbox(array('swd[]', 'word-'.$rs->rule_id),$rs->rule_id,false,'','',$disabled_word).' '.
                         html::escapeHTML($rs->rule_content).
                         '</label></p>';

                    if ($rs->blog_id) {
                         // local list
                         if ($res_local == '') {
                              $res_local = '<h4>'.__('Local words (used only for this blog)').'</h4>';
                         }
                         $res_local .= $item;
                    } else {
                         // global list
                         if ($res_global == '') {
                              $res_global = '<h4>'.__('Global words (used for all blogs)').'</h4>';
                         }
                         $res_global .= $item;
                    }
               }
               $res .= $res_local.$res_global;

               $res .=
               '</div>'.
               '<p>'.form::hidden(array('spamwords'),1).
               $core->formNonce().
               '<input class="submit delete" type="submit" value="' . __('Delete selected words') . '"/></p>'.
               '</form>';
          }

          if ($core->auth->isSuperAdmin())
          {
               $res .=
               '<form action="'.html::escapeURL($url).'" method="post">'.
               '<p><input type="submit" value="'.__('Create default wordlist').'" />'.
               form::hidden(array('spamwords'),1).
               form::hidden(array('createlist'),1).
               $core->formNonce().'</p>'.
               '</form>';
          }

          return $res;
     }

     private function getRules()
     {
          $strReq = 'SELECT rule_id, blog_id, rule_content '.
                    'FROM '.$this->table.' '.
                    "WHERE rule_type = 'word' ".
                    "AND ( blog_id = '".$this->con->escape($this->core->blog->id)."' ".
                    "OR blog_id IS NULL ) ".
                    'ORDER BY blog_id ASC, rule_content ASC ';

          return $this->con->select($strReq);
     }

     private function addRule($content,$general=false)
     {
          $strReq = 'SELECT rule_id FROM '.$this->table.' '.
                    "WHERE rule_type = 'word' ".
                    "AND rule_content = '".$this->con->escape($content)."' ";
          $rs = $this->con->select($strReq);

          if (!$rs->isEmpty()) {
               throw new Exception(__('This word exists'));
          }

          $rs = $this->con->select('SELECT MAX(rule_id) FROM '.$this->table);
          $id = (integer) $rs->f(0) + 1;

          $cur = $this->con->openCursor($this->table);
          $cur->rule_id = $id;
          $cur->rule_type = 'word';
          $cur->rule_content = (string) $content;

          if ($general && $this->core->auth->isSuperAdmin()) {
               $cur->blog_id = null;
          } else {
               $cur->blog_id = $this->core->blog->id;
          }

          $cur->insert();
     }

     private function removeRule($ids)
     {
          $strReq = 'DELETE FROM '.$this->table.' ';

          if (is_array($ids)) {
               foreach ($ids as &$v) {
                    $v = (integer) $v;
               }
               $strReq .= 'WHERE rule_id IN ('.implode(',',$ids).') ';
          } else {
               $ids = (integer) $ids;
               $strReq .= 'WHERE rule_id = '.$ids.' ';
          }

          if (!$this->core->auth->isSuperAdmin()) {
               $strReq .= "AND blog_id = '".$this->con->escape($this->core->blog->id)."' ";
          }

          $this->con->execute($strReq);
     }

     public function defaultWordsList()
     {
          $words = array(
               '/-credit(\s+|$)/',
               '/-digest(\s+|$)/',
               '/-loan(\s+|$)/',
               '/-online(\s+|$)/',
               '4u',
               'adipex',
               'advicer',
               'ambien',
               'baccarat',
               'baccarrat',
               'blackjack',
               'bllogspot',
               'bolobomb',
               'booker',
               'byob',
               'car-rental-e-site',
               'car-rentals-e-site',
               'carisoprodol',
               'cash',
               'casino',
               'casinos',
               'chatroom',
               'cialis',
               'craps',
               'credit-card',
               'credit-report-4u',
               'cwas',
               'cyclen',
               'cyclobenzaprine',
               'dating-e-site',
               'day-trading',
               'debt',
               'digest-',
               'discount',
               'discreetordering',
               'duty-free',
               'dutyfree',
               'estate',
               'favourits',
               'fioricet',
               'flowers-leading-site',
               'freenet',
               'freenet-shopping',
               'gambling',
               'gamias',
               'health-insurancedeals-4u',
               'holdem',
               'holdempoker',
               'holdemsoftware',
               'holdemtexasturbowilson',
               'hotel-dealse-site',
               'hotele-site',
               'hotelse-site',
               'incest',
               'insurance-quotesdeals-4u',
               'insurancedeals-4u',
               'jrcreations',
               'levitra',
               'macinstruct',
               'mortgage',
               'online-gambling',
               'onlinegambling-4u',
               'ottawavalleyag',
               'ownsthis',
               'palm-texas-holdem-game',
               'paxil',
               'pharmacy',
               'phentermine',
               'pills',
               'poker',
               'poker-chip',
               'poze',
               'prescription',
               'rarehomes',
               'refund',
               'rental-car-e-site',
               'roulette',
               'shemale',
               'slot',
               'slot-machine',
               'soma',
               'taboo',
               'tamiflu',
               'texas-holdem',
               'thorcarlson',
               'top-e-site',
               'top-site',
               'tramadol',
               'trim-spa',
               'ultram',
               'v1h',
               'vacuum',
               'valeofglamorganconservatives',
               'viagra',
               'vicodin',
               'vioxx',
               'xanax',
               'zolus'
          );

          foreach ($words as $w) {
               try {
                    $this->addRule($w,true);
               } catch (Exception $e) {}
          }
     }
}
?>