MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / maintenance / cleanupBlocks.php

diff --git a/maintenance/cleanupBlocks.php b/maintenance/cleanupBlocks.php
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+++ b/maintenance/cleanupBlocks.php
@@ -0,0 +1,147 @@
+<?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->addDescription( "Cleanup user blocks with user names not matching the 'user' table" );
+               $this->setBatchSize( 1000 );
+       }
+
+       public function execute() {
+               $db = $this->getDB( 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 = [];
+
+                       $res = $db->select(
+                               'ipblocks',
+                               [ 'ipb_user' ],
+                               [
+                                       "ipb_user >= $from",
+                                       "ipb_user <= $to",
+                               ],
+                               __METHOD__,
+                               [
+                                       'GROUP BY' => 'ipb_user',
+                                       'HAVING' => 'COUNT(*) > 1',
+                               ]
+                       );
+                       foreach ( $res as $row ) {
+                               $bestBlock = null;
+                               $res2 = $db->select(
+                                       'ipblocks',
+                                       '*',
+                                       [
+                                               '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 ( [ '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',
+                                       [ '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(
+                               [ 'ipblocks', 'user' ],
+                               [ 'ipb_id', 'user_name' ],
+                               [
+                                       'ipb_user = user_id',
+                                       "ipb_user >= $from",
+                                       "ipb_user <= $to",
+                                       'ipb_address != user_name',
+                               ],
+                               __METHOD__
+                       );
+                       foreach ( $res as $row ) {
+                               $db->update(
+                                       'ipblocks',
+                                       [ 'ipb_address' => $row->user_name ],
+                                       [ 'ipb_id' => $row->ipb_id ],
+                                       __METHOD__
+                               );
+                       }
+               }
+
+               $this->output( "Done!\n" );
+       }
+}
+
+$maintClass = "CleanupBlocks";
+require_once RUN_MAINTENANCE_IF_MAIN;