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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
*/
require_once __DIR__ . '/Maintenance.php';
/**
* 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( 100 );
}
public function execute() {
$db = $this->getDB( DB_MASTER );
if ( !$db->tableExists( 'page_restrictions' ) ) {
$this->error( "page_restrictions table does not exist", true );
}
$start = $db->selectField( 'page', 'MIN(page_id)', false, __METHOD__ );
if ( !$start ) {
$this->error( "Nothing to do.", true );
}
$end = $db->selectField( 'page', 'MAX(page_id)', false, __METHOD__ );
# Do remaining chunk
$end += $this->mBatchSize - 1;
$blockStart = $start;
$blockEnd = $start + $this->mBatchSize - 1;
$encodedExpiry = 'infinity';
while ( $blockEnd <= $end ) {
$this->output( "...doing page_id from $blockStart to $blockEnd\n" );
$cond = "page_id BETWEEN $blockStart AND $blockEnd AND page_restrictions !=''";
$res = $db->select(
'page',
[ 'page_id', 'page_namespace', 'page_restrictions' ],
$cond,
__METHOD__
);
$batch = [];
foreach ( $res as $row ) {
$oldRestrictions = [];
foreach ( explode( ':', trim( $row->page_restrictions ) ) as $restrict ) {
$temp = explode( '=', trim( $restrict ) );
// Make sure we are not settings restrictions to ""
if ( count( $temp ) == 1 && $temp[0] ) {
// old old format should be treated as edit/move restriction
$oldRestrictions["edit"] = trim( $temp[0] );
$oldRestrictions["move"] = trim( $temp[0] );
} elseif ( $temp[1] ) {
$oldRestrictions[$temp[0]] = trim( $temp[1] );
}
}
# Clear invalid columns
if ( $row->page_namespace == NS_MEDIAWIKI ) {
$db->update( 'page', [ 'page_restrictions' => '' ],
[ 'page_id' => $row->page_id ], __FUNCTION__ );
$this->output( "...removed dead page_restrictions column for page {$row->page_id}\n" );
}
# Update restrictions table
foreach ( $oldRestrictions as $action => $restrictions ) {
$batch[] = [
'pr_page' => $row->page_id,
'pr_type' => $action,
'pr_level' => $restrictions,
'pr_cascade' => 0,
'pr_expiry' => $encodedExpiry
];
}
}
# We use insert() and not replace() as Article.php replaces
# page_restrictions with '' when protected in the restrictions table
if ( count( $batch ) ) {
$ok = $db->deadlockLoop( [ $db, 'insert' ], 'page_restrictions',
$batch, __FUNCTION__, [ 'IGNORE' ] );
if ( !$ok ) {
throw new MWException( "Deadlock loop failed wtf :(" );
}
}
$blockStart += $this->mBatchSize - 1;
$blockEnd += $this->mBatchSize - 1;
wfWaitForSlaves();
}
$this->output( "...removing dead rows from page_restrictions\n" );
// Kill any broken rows from previous imports
$db->delete( 'page_restrictions', [ 'pr_level' => '' ] );
// Kill other invalid rows
$db->deleteJoin(
'page_restrictions',
'page',
'pr_page',
'page_id',
[ 'page_namespace' => NS_MEDIAWIKI ]
);
$this->output( "...Done!\n" );
}
}
$maintClass = "UpdateRestrictions";
require_once RUN_MAINTENANCE_IF_MAIN;