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<?php
/**
* Makes the required database updates for Special:ProtectedPages
* to show all protected pages, even ones before the page restrictions
* schema change. All remaining page_restriction column values are moved
* to the new table.
*
* 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 Maintenance
*/
use MediaWiki\Maintenance\Maintenance;
// @codeCoverageIgnoreStart
require_once __DIR__ . '/Maintenance.php';
// @codeCoverageIgnoreEnd
/**
* Maintenance script that updates page_restrictions table from
* old page_restriction column.
*
* @ingroup Maintenance
*/
class UpdateRestrictions extends Maintenance {
public function __construct() {
parent::__construct();
$this->addDescription( 'Updates page_restrictions table from old page_restriction column' );
$this->setBatchSize( 1000 );
}
/** @inheritDoc */
public function execute() {
$dbw = $this->getDB( DB_PRIMARY );
$batchSize = $this->getBatchSize();
if ( !$dbw->tableExists( 'page_restrictions', __METHOD__ ) ) {
$this->fatalError( "page_restrictions table does not exist" );
}
if ( !$dbw->fieldExists( 'page', 'page_restrictions', __METHOD__ ) ) {
$this->output( "Migration is not needed.\n" );
return true;
}
$encodedExpiry = $dbw->getInfinity();
$maxPageId = $dbw->newSelectQueryBuilder()
->select( 'MAX(page_id)' )
->from( 'page' )
->caller( __METHOD__ )->fetchField();
$batchMinPageId = 0;
do {
$batchMaxPageId = $batchMinPageId + $batchSize;
$this->output( "...processing page IDs from $batchMinPageId to $batchMaxPageId.\n" );
$res = $dbw->newSelectQueryBuilder()
->select( [ 'page_id', 'page_restrictions' ] )
->from( 'page' )
->where( [
$dbw->expr( 'page_restrictions', '!=', '' ),
$dbw->expr( 'page_id', '>', $batchMinPageId ),
$dbw->expr( 'page_id', '<=', $batchMaxPageId ),
] )
->caller( __METHOD__ )->fetchResultSet();
// No pages have legacy protection settings in the current batch
if ( !$res->numRows() ) {
$batchMinPageId = $batchMaxPageId;
continue;
}
$batch = [];
$pageIds = [];
foreach ( $res as $row ) {
$pageIds[] = $row->page_id;
$restrictionsByAction = $this->mapLegacyRestrictionBlob( $row->page_restrictions );
# Update restrictions table
foreach ( $restrictionsByAction as $action => $restrictions ) {
$batch[] = [
'pr_page' => $row->page_id,
'pr_type' => $action,
'pr_level' => $restrictions,
'pr_cascade' => 0,
'pr_expiry' => $encodedExpiry
];
}
}
$this->beginTransaction( $dbw, __METHOD__ );
// Insert new format protection settings for the pages in the current batch.
// Use INSERT IGNORE to ignore conflicts with new format settings that might exist for the page
$dbw->newInsertQueryBuilder()
->insertInto( 'page_restrictions' )
->ignore()
->rows( $batch )
->caller( __METHOD__ )->execute();
// Clear out the legacy page.page_restrictions blob for this batch
$dbw->newUpdateQueryBuilder()
->update( 'page' )
->set( [ 'page_restrictions' => '' ] )
->where( [ 'page_id' => $pageIds ] )
->caller( __METHOD__ )
->execute();
$this->commitTransaction( $dbw, __METHOD__ );
$batchMinPageId = $batchMaxPageId;
} while ( $batchMaxPageId < $maxPageId );
$this->output( "...Done!\n" );
return true;
}
/**
* Convert a legacy restriction specification from the page.page_restrictions blob to
* a map of action names to restriction levels.
*
* @param string $legacyBlob Legacy page.page_restrictions blob,
* e.g. "sysop" or "edit=sysop:move=autoconfirmed"
* @return string[] array of restriction levels keyed by action names
*/
private function mapLegacyRestrictionBlob( $legacyBlob ) {
$oldRestrictions = [];
foreach ( explode( ':', trim( $legacyBlob ) ) as $restrict ) {
$temp = explode( '=', trim( $restrict ) );
// Treat old old format without action name as edit/move restriction
if ( count( $temp ) == 1 ) {
$level = trim( $temp[0] );
$oldRestrictions['edit'] = $level;
$oldRestrictions['move'] = $level;
} else {
$restriction = trim( $temp[1] );
// Some old entries are empty
if ( $restriction != '' ) {
$oldRestrictions[$temp[0]] = $restriction;
}
}
}
return $oldRestrictions;
}
}
// @codeCoverageIgnoreStart
$maintClass = UpdateRestrictions::class;
require_once RUN_MAINTENANCE_IF_MAIN;
// @codeCoverageIgnoreEnd