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<?php
/**
* Implements Special:RunJobs
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup SpecialPage
* @author Aaron Schulz
*/
use MediaWiki\Logger\LoggerFactory;
/**
* Special page designed for running background tasks (internal use only)
*
* @ingroup SpecialPage
*/
class SpecialRunJobs extends UnlistedSpecialPage {
public function __construct() {
parent::__construct( 'RunJobs' );
}
public function execute( $par = '' ) {
$this->getOutput()->disable();
if ( wfReadOnly() ) {
// HTTP 423 Locked
HttpStatus::header( 423 );
print 'Wiki is in read-only mode';
return;
} elseif ( !$this->getRequest()->wasPosted() ) {
HttpStatus::header( 400 );
print 'Request must be POSTed';
return;
}
$optional = array( 'maxjobs' => 0, 'maxtime' => 30, 'type' => false, 'async' => true );
$required = array_flip( array( 'title', 'tasks', 'signature', 'sigexpiry' ) );
$params = array_intersect_key( $this->getRequest()->getValues(), $required + $optional );
$missing = array_diff_key( $required, $params );
if ( count( $missing ) ) {
HttpStatus::header( 400 );
print 'Missing parameters: ' . implode( ', ', array_keys( $missing ) );
return;
}
$squery = $params;
unset( $squery['signature'] );
$correctSignature = self::getQuerySignature( $squery, $this->getConfig()->get( 'SecretKey' ) );
$providedSignature = $params['signature'];
$verified = is_string( $providedSignature )
&& hash_equals( $correctSignature, $providedSignature );
if ( !$verified || $params['sigexpiry'] < time() ) {
HttpStatus::header( 400 );
print 'Invalid or stale signature provided';
return;
}
// Apply any default parameter values
$params += $optional;
if ( $params['async'] ) {
// Client will usually disconnect before checking the response,
// but it needs to know when it is safe to disconnect. Until this
// reaches ignore_user_abort(), it is not safe as the jobs won't run.
ignore_user_abort( true ); // jobs may take a bit of time
// HTTP 202 Accepted
HttpStatus::header( 202 );
ob_flush();
flush();
// Once the client receives this response, it can disconnect
}
// Do all of the specified tasks...
if ( in_array( 'jobs', explode( '|', $params['tasks'] ) ) ) {
$runner = new JobRunner( LoggerFactory::getInstance( 'runJobs' ) );
$response = $runner->run( array(
'type' => $params['type'],
'maxJobs' => $params['maxjobs'] ? $params['maxjobs'] : 1,
'maxTime' => $params['maxtime'] ? $params['maxjobs'] : 30
) );
if ( !$params['async'] ) {
print FormatJson::encode( $response, true );
}
}
}
/**
* @param array $query
* @param string $secretKey
* @return string
*/
public static function getQuerySignature( array $query, $secretKey ) {
ksort( $query ); // stable order
return hash_hmac( 'sha1', wfArrayToCgi( $query ), $secretKey );
}
}
|
