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+<?php
+/**
+ * Cleans up user blocks with user names not matching the 'user' 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 to clean up user blocks with user names not matching the
+ * 'user' table.
+ *
+ * @ingroup Maintenance
+ */
+class CleanupBlocks extends Maintenance {
+
+ public function __construct() {
+ parent::__construct();
+ $this->mDescription = "Cleanup user blocks with user names not matching the 'user' table";
+ $this->setBatchSize( 1000 );
+ }
+
+ public function execute() {
+ $db = wfGetDB( DB_MASTER );
+
+ $max = $db->selectField( 'ipblocks', 'MAX(ipb_user)' );
+
+ // Step 1: Clean up any duplicate user blocks
+ for ( $from = 1; $from <= $max; $from += $this->mBatchSize ) {
+ $to = min( $max, $from + $this->mBatchSize - 1 );
+ $this->output( "Cleaning up duplicate ipb_user ($from-$to of $max)\n" );
+
+ $delete = array();
+
+ $res = $db->select(
+ 'ipblocks',
+ array( 'ipb_user' ),
+ array(
+ "ipb_user >= $from",
+ "ipb_user <= $to",
+ ),
+ __METHOD__,
+ array(
+ 'GROUP BY' => 'ipb_user',
+ 'HAVING' => 'COUNT(*) > 1',
+ )
+ );
+ foreach ( $res as $row ) {
+ $bestBlock = null;
+ $res2 = $db->select(
+ 'ipblocks',
+ '*',
+ array(
+ 'ipb_user' => $row->ipb_user,
+ )
+ );
+ foreach ( $res2 as $row2 ) {
+ $block = Block::newFromRow( $row2 );
+ if ( !$bestBlock ) {
+ $bestBlock = $block;
+ continue;
+ }
+
+ // Find the most-restrictive block. Can't use
+ // Block::chooseBlock because that's for IP blocks, not
+ // user blocks.
+ $keep = null;
+ if ( $keep === null && $block->getExpiry() !== $bestBlock->getExpiry() ) {
+ // This works for infinite blocks because 'infinity' > '20141024234513'
+ $keep = $block->getExpiry() > $bestBlock->getExpiry();
+ }
+ if ( $keep === null ) {
+ foreach ( array( 'createaccount', 'sendemail', 'editownusertalk' ) as $action ) {
+ if ( $block->prevents( $action ) xor $bestBlock->prevents( $action ) ) {
+ $keep = $block->prevents( $action );
+ break;
+ }
+ }
+ }
+
+ if ( $keep ) {
+ $delete[] = $bestBlock->getId();
+ $bestBlock = $block;
+ } else {
+ $delete[] = $block->getId();
+ }
+ }
+ }
+
+ if ( $delete ) {
+ $db->delete(
+ 'ipblocks',
+ array( 'ipb_id' => $delete ),
+ __METHOD__
+ );
+ }
+ }
+
+ // Step 2: Update the user name in any blocks where it doesn't match
+ for ( $from = 1; $from <= $max; $from += $this->mBatchSize ) {
+ $to = min( $max, $from + $this->mBatchSize - 1 );
+ $this->output( "Cleaning up mismatched user name ($from-$to of $max)\n" );
+
+ $res = $db->select(
+ array( 'ipblocks', 'user' ),
+ array( 'ipb_id', 'user_name' ),
+ array(
+ 'ipb_user = user_id',
+ "ipb_user >= $from",
+ "ipb_user <= $to",
+ 'ipb_address != user_name',
+ ),
+ __METHOD__
+ );
+ foreach ( $res as $row ) {
+ $db->update(
+ 'ipblocks',
+ array( 'ipb_address' => $row->user_name ),
+ array( 'ipb_id' => $row->ipb_id ),
+ __METHOD__
+ );
+ }
+ }
+
+ $this->output( "Done!\n" );
+ }
+}
+
+$maintClass = "CleanupBlocks";
+require_once RUN_MAINTENANCE_IF_MAIN;