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<?php
/**
* Phergie
*
* PHP version 5
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.
* It is also available through the world-wide-web at this URL:
* http://phergie.org/license
*
* @category Phergie
* @package Phergie_Plugin_Censor
* @author Phergie Development Team <team@phergie.org>
* @copyright 2008-2010 Phergie Development Team (http://phergie.org)
* @license http://phergie.org/license New BSD License
* @link http://pear.phergie.org/package/Phergie_Plugin_Censor
*/
/**
* Facilitates censoring of event content or discardment of events
* containing potentially offensive phrases depending on the value of the
* configuration setting censor.mode ('off', 'censor', 'discard'). Also
* provides access to a web service for detecting censored words so that
* other plugins may optionally integrate and adjust behavior accordingly to
* prevent discardment of events.
*
* @category Phergie
* @package Phergie_Plugin_Censor
* @author Phergie Development Team <team@phergie.org>
* @license http://phergie.org/license New BSD License
* @link http://pear.phergie.org/package/Phergie_Plugin_Censor
* @uses extension soap
*/
class Phergie_Plugin_Censor extends Phergie_Plugin_Abstract
{
/**
* SOAP client to interact with the CDYNE Profanity Filter API
*
* @var SoapClient
*/
protected $soap;
/**
* Checks for dependencies.
*
* @return void
*/
public function onLoad()
{
if (!extension_loaded('soap')) {
$this->fail('The PHP soap extension is required');
}
if (!in_array($this->config['censor.mode'], array('censor', 'discard'))) {
$this->plugins->removePlugin($this);
}
}
/**
* Returns a "clean" version of a given string.
*
* @param string $string String to clean
*
* @return string Cleaned string
*/
public function cleanString($string)
{
if (empty($this->soap)) {
$this->soap = new SoapClient('http://ws.cdyne.com/ProfanityWS/Profanity.asmx?wsdl');
}
$params = array('Text' => $string);
$attempts = 0;
while ($attempts < 3) {
try {
$response = $this->soap->SimpleProfanityFilter($params);
break;
} catch (SoapFault $e) {
$attempts++;
sleep(1);
}
}
if ($attempts == 3) {
return $string;
}
return $response->SimpleProfanityFilterResult->CleanText;
}
/**
* Processes events before they are dispatched and either censors their
* content or discards them if they contain potentially offensive
* content.
*
* @return void
*/
public function preDispatch()
{
$events = $this->events->getEvents();
foreach ($events as $event) {
switch ($event->getType()) {
case Phergie_Event_Request::TYPE_PRIVMSG:
case Phergie_Event_Request::TYPE_ACTION:
case Phergie_Event_Request::TYPE_NOTICE:
$text = $event->getArgument(1);
$clean = $this->cleanString($text);
if ($text != $clean) {
if ($this->config['censor.mode'] == 'censor') {
$event->setArgument(1, $clean);
} else {
$this->events->removeEvent($event);
}
}
break;
}
}
}
}
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