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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.
*
* @file
* @ingroup Maintenance
*/
define( 'BATCH_SIZE', 100 );
require_once 'commandLine.inc';
$db =& wfGetDB( DB_MASTER );
if ( !$db->tableExists( 'page_restrictions' ) ) {
echo "page_restrictions does not exist\n";
exit( 1 );
}
migrate_page_restrictions( $db );
function migrate_page_restrictions( $db ) {
$start = $db->selectField( 'page', 'MIN(page_id)', false, __FUNCTION__ );
if( !$start ) {
die("Nothing to do.\n");
}
$end = $db->selectField( 'page', 'MAX(page_id)', false, __FUNCTION__ );
# Do remaining chunk
$end += BATCH_SIZE - 1;
$blockStart = $start;
$blockEnd = $start + BATCH_SIZE - 1;
$encodedExpiry = 'infinity';
while( $blockEnd <= $end ) {
echo "...doing page_id from $blockStart to $blockEnd\n";
$cond = "page_id BETWEEN $blockStart AND $blockEnd AND page_restrictions !=''";
$res = $db->select( 'page', array('page_id','page_namespace','page_restrictions'), $cond, __FUNCTION__ );
$batch = array();
while( $row = $db->fetchObject( $res ) ) {
$oldRestrictions = array();
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] );
} else if( $temp[1] ) {
$oldRestrictions[$temp[0]] = trim( $temp[1] );
}
}
# Clear invalid columns
if( $row->page_namespace == NS_MEDIAWIKI ) {
$db->update( 'page', array( 'page_restrictions' => '' ),
array( 'page_id' => $row->page_id ), __FUNCTION__ );
echo "...removed dead page_restrictions column for page {$row->page_id}\n";
}
# Update restrictions table
foreach( $oldRestrictions as $action => $restrictions ) {
$batch[] = array(
'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( array( $db, 'insert' ), 'page_restrictions',
$batch, __FUNCTION__, array( 'IGNORE' ) );
if( !$ok ) {
throw new MWException( "Deadlock loop failed wtf :(" );
}
}
$blockStart += BATCH_SIZE - 1;
$blockEnd += BATCH_SIZE - 1;
wfWaitForSlaves( 5 );
}
echo "...removing dead rows from page_restrictions\n";
// Kill any broken rows from previous imports
$db->delete( 'page_restrictions', array( 'pr_level' => '' ) );
// Kill other invalid rows
$db->deleteJoin( 'page_restrictions', 'page', 'pr_page', 'page_id', array('page_namespace' => NS_MEDIAWIKI) );
echo "...Done!\n";
}
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