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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_Acl
* @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_Acl
*/
/**
* Provides an access control system to limit reponses to events based on
* the users who originate them.
*
* @category Phergie
* @package Phergie_Plugin_Acl
* @author Phergie Development Team <team@phergie.org>
* @license http://phergie.org/license New BSD License
* @link http://pear.phergie.org/package/Phergie_Plugin_Acl
*/
class Phergie_Plugin_Acl extends Phergie_Plugin_Abstract
{
/**
* Checks for permission settings and removes the plugin if none are set.
*
* @return void
*/
public function onLoad()
{
if (!$this->getConfig('acl.blacklist')
&& !$this->getConfig('acl.whitelist')
) {
$this->plugins->removePlugin($this);
}
}
/**
* Checks permission settings and short-circuits event processing for
* blacklisted users.
*
* @return bool FALSE to short-circuit event processing if the user is
* blacklisted, TRUE otherwise
*/
public function preEvent()
{
// Ignore server responses
if ($this->event instanceof Phergie_Event_Response) {
return true;
}
// Ignore server-initiated events
if (!$this->event->isFromUser()) {
return true;
}
// Determine whether a whitelist or blacklist is being used
$list = $this->getConfig('acl.whitelist');
$matches = true;
if (!$list) {
$list = $this->getConfig('acl.blacklist');
$matches = false;
}
// Support host-specific lists
$host = $this->connection->getHost();
if (isset($list[$host])) {
$list = $list[$host];
}
// Short-circuit event processing if appropriate
$hostmask = $this->event->getHostmask();
foreach ($list as $pattern) {
if ($hostmask->matches($pattern)) {
return $matches;
}
}
// Allow event processing if appropriate
return !$matches;
}
}
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