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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2010, StatusNet, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('STATUSNET')) {
exit(1);
}
/**
* Example to disable all debug messages and those containing 'About to push':
* addPlugin('LogFilter', array(
* 'priority' => array(LOG_DEBUG => false),
* 'regex' => array('/About to push/' => false)
* ));
*
* @todo add an admin panel
*
* @package LogFilterPlugin
* @maintainer Brion Vibber <brion@status.net>
*/
class LogFilterPlugin extends Plugin
{
public $default = true; // Set to false to require opting things in
public $priority = array(); // override by priority: array(LOG_ERR => true, LOG_DEBUG => false)
public $regex = array(); // override by regex match of message: array('/twitter/i' => false)
function onPluginVersion(&$versions)
{
$versions[] = array('name' => 'LogFilter',
'version' => STATUSNET_VERSION,
'author' => 'Brion Vibber',
'homepage' => 'http://status.net/wiki/Plugin:LogFilter',
'rawdescription' =>
_m('Provides server-side setting to filter log output by type or keyword.'));
return true;
}
/**
* Hook for the StartLog event in common_log().
* If a message doesn't pass our filters, we'll abort it.
*
* @param string $priority
* @param string $msg
* @param string $filename
* @return boolean hook result code
*/
function onStartLog(&$priority, &$msg, &$filename)
{
if ($this->filter($priority, $msg)) {
// Let it through
return true;
} else {
// Abort -- this line will go to /dev/null :)
return false;
}
}
/**
* Do the filtering...
*
* @param string $priority
* @param string $msg
* @return boolean true to let the log message be processed
*/
function filter($priority, $msg)
{
$state = $this->default;
if (array_key_exists($priority, $this->priority)) {
$state = $this->priority[$priority];
}
foreach ($this->regex as $regex => $override) {
if (preg_match($regex, $msg)) {
$state = $override;
}
}
return $state;
}
}
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