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<?php
/**
*
*
* Created on March 5, 2011
*
* Copyright © 2011 Bryan Tong Minh <Bryan.TongMinh@Gmail.com>
*
* 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
*/
if ( !defined( 'MEDIAWIKI' ) ) {
// Eclipse helper - will be ignored in production
require_once( "ApiBase.php" );
}
/**
* @ingroup API
*/
class ApiFileRevert extends ApiBase {
/**
* @var File
*/
protected $file;
protected $archiveName;
protected $params;
public function __construct( $main, $action ) {
parent::__construct( $main, $action );
}
public function execute() {
global $wgUser;
$this->params = $this->extractRequestParams();
// Extract the file and archiveName from the request parameters
$this->validateParameters();
// Check whether we're allowed to revert this file
$this->checkPermissions( $wgUser );
$sourceUrl = $this->file->getArchiveVirtualUrl( $this->archiveName );
$status = $this->file->upload( $sourceUrl, $this->params['comment'], $this->params['comment'] );
if ( $status->isGood() ) {
$result = array( 'result' => 'Success' );
} else {
$result = array(
'result' => 'Failure',
'errors' => $this->getResult()->convertStatusToArray( $status ),
);
}
$this->getResult()->addValue( null, $this->getModuleName(), $result );
}
/**
* Checks that the user has permissions to perform this revert.
* Dies with usage message on inadequate permissions.
* @param $user User The user to check.
*/
protected function checkPermissions( $user ) {
$permissionErrors = array_merge(
$this->file->getTitle()->getUserPermissionsErrors( 'edit' , $user ),
$this->file->getTitle()->getUserPermissionsErrors( 'upload' , $user )
);
if ( $permissionErrors ) {
$this->dieUsageMsg( $permissionErrors[0] );
}
}
/**
* Validate the user parameters and set $this->archiveName and $this->file.
* Throws an error if validation fails
*/
protected function validateParameters() {
// Validate the input title
$title = Title::makeTitleSafe( NS_FILE, $this->params['filename'] );
if ( is_null( $title ) ) {
$this->dieUsageMsg( array( 'invalidtitle', $this->params['filename'] ) );
}
// Check if the file really exists
$this->file = wfLocalFile( $title );
if ( !$this->file->exists() ) {
$this->dieUsageMsg( 'notanarticle' );
}
// Check if the archivename is valid for this file
$this->archiveName = $this->params['archivename'];
$oldFile = RepoGroup::singleton()->getLocalRepo()->newFromArchiveName( $title, $this->archiveName );
if ( !$oldFile->exists() ) {
$this->dieUsageMsg( 'filerevert-badversion' );
}
}
public function mustBePosted() {
return true;
}
public function isWriteMode() {
return true;
}
public function getAllowedParams() {
return array(
'filename' => array(
ApiBase::PARAM_TYPE => 'string',
ApiBase::PARAM_REQUIRED => true,
),
'comment' => array(
ApiBase::PARAM_DFLT => '',
),
'archivename' => array(
ApiBase::PARAM_TYPE => 'string',
ApiBase::PARAM_REQUIRED => true,
),
'token' => null,
);
}
public function getParamDescription() {
$params = array(
'filename' => 'Target filename',
'token' => 'Edit token. You can get one of these through prop=info',
'comment' => 'Upload comment',
'archivename' => 'Archive name of the revision to revert to',
);
return $params;
}
public function getDescription() {
return array(
'Revert a file to an old version'
);
}
public function getPossibleErrors() {
return array_merge( parent::getPossibleErrors(),
array(
array( 'mustbeloggedin', 'upload' ),
array( 'badaccess-groups' ),
array( 'invalidtitle', 'title' ),
array( 'notanarticle' ),
array( 'filerevert-badversion' ),
)
);
}
public function needsToken() {
return true;
}
public function getTokenSalt() {
return '';
}
protected function getExamples() {
return array(
'Revert Wiki.png to the version of 20110305152740:',
' api.php?action=filerevert&filename=Wiki.png&comment=Revert&archivename=20110305152740!Wiki.png&token=+\\',
);
}
public function getVersion() {
return __CLASS__ . ': $Id$';
}
}
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