maintenance/cleanupBlocks.php

   1 <?php
   2 /**
   3  * Cleans up user blocks with user names not matching the 'user' table
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  */
  23
  24 require_once __DIR__ . '/Maintenance.php';
  25
  26 use MediaWiki\Block\DatabaseBlock;
  27
  28 /**
  29  * Maintenance script to clean up user blocks with user names not matching the
  30  * 'user' table.
  31  *
  32  * @ingroup Maintenance
  33  */
  34 class CleanupBlocks extends Maintenance {
  35
  36         public function __construct() {
  37                 parent::__construct();
  38                 $this->addDescription( "Cleanup user blocks with user names not matching the 'user' table" );
  39                 $this->setBatchSize( 1000 );
  40         }
  41
  42         public function execute() {
  43                 $db = $this->getDB( DB_MASTER );
  44                 $blockQuery = DatabaseBlock::getQueryInfo();
  45
  46                 $max = $db->selectField( 'ipblocks', 'MAX(ipb_user)' );
  47
  48                 // Step 1: Clean up any duplicate user blocks
  49                 $batchSize = $this->getBatchSize();
  50                 for ( $from = 1; $from <= $max; $from += $batchSize ) {
  51                         $to = min( $max, $from + $batchSize - 1 );
  52                         $this->output( "Cleaning up duplicate ipb_user ($from-$to of $max)\n" );
  53
  54                         $delete = [];
  55
  56                         $res = $db->select(
  57                                 'ipblocks',
  58                                 [ 'ipb_user' ],
  59                                 [
  60                                         "ipb_user >= " . (int)$from,
  61                                         "ipb_user <= " . (int)$to,
  62                                 ],
  63                                 __METHOD__,
  64                                 [
  65                                         'GROUP BY' => 'ipb_user',
  66                                         'HAVING' => 'COUNT(*) > 1',
  67                                 ]
  68                         );
  69                         foreach ( $res as $row ) {
  70                                 $bestBlock = null;
  71                                 $res2 = $db->select(
  72                                         $blockQuery['tables'],
  73                                         $blockQuery['fields'],
  74                                         [
  75                                                 'ipb_user' => $row->ipb_user,
  76                                         ],
  77                                         __METHOD__,
  78                                         [],
  79                                         $blockQuery['joins']
  80                                 );
  81                                 foreach ( $res2 as $row2 ) {
  82                                         $block = DatabaseBlock::newFromRow( $row2 );
  83                                         if ( !$bestBlock ) {
  84                                                 $bestBlock = $block;
  85                                                 continue;
  86                                         }
  87
  88                                         // Find the most-restrictive block. Can't use
  89                                         // DatabaseBlock::chooseBlock because that's for IP blocks, not
  90                                         // user blocks.
  91                                         $keep = null;
  92                                         if ( $keep === null && $block->getExpiry() !== $bestBlock->getExpiry() ) {
  93                                                 // This works for infinite blocks because 'infinity' > '20141024234513'
  94                                                 $keep = $block->getExpiry() > $bestBlock->getExpiry();
  95                                         }
  96                                         if ( $keep === null ) {
  97                                                 if ( $block->isCreateAccountBlocked() xor $bestBlock->isCreateAccountBlocked() ) {
  98                                                         $keep = $block->isCreateAccountBlocked();
  99                                                 } elseif ( $block->isEmailBlocked() xor $bestBlock->isEmailBlocked() ) {
 100                                                         $keep = $block->isEmailBlocked();
 101                                                 } elseif ( $block->isUsertalkEditAllowed() xor $bestBlock->isUsertalkEditAllowed() ) {
 102                                                         $keep = $block->isUsertalkEditAllowed();
 103                                                 }
 104                                         }
 105
 106                                         if ( $keep ) {
 107                                                 $delete[] = $bestBlock->getId();
 108                                                 $bestBlock = $block;
 109                                         } else {
 110                                                 $delete[] = $block->getId();
 111                                         }
 112                                 }
 113                         }
 114
 115                         if ( $delete ) {
 116                                 $db->delete(
 117                                         'ipblocks',
 118                                         [ 'ipb_id' => $delete ],
 119                                         __METHOD__
 120                                 );
 121                         }
 122                 }
 123
 124                 // Step 2: Update the user name in any blocks where it doesn't match
 125                 for ( $from = 1; $from <= $max; $from += $batchSize ) {
 126                         $to = min( $max, $from + $batchSize - 1 );
 127                         $this->output( "Cleaning up mismatched user name ($from-$to of $max)\n" );
 128
 129                         $res = $db->select(
 130                                 [ 'ipblocks', 'user' ],
 131                                 [ 'ipb_id', 'user_name' ],
 132                                 [
 133                                         'ipb_user = user_id',
 134                                         "ipb_user >= " . (int)$from,
 135                                         "ipb_user <= " . (int)$to,
 136                                         'ipb_address != user_name',
 137                                 ],
 138                                 __METHOD__
 139                         );
 140                         foreach ( $res as $row ) {
 141                                 $db->update(
 142                                         'ipblocks',
 143                                         [ 'ipb_address' => $row->user_name ],
 144                                         [ 'ipb_id' => $row->ipb_id ],
 145                                         __METHOD__
 146                                 );
 147                         }
 148                 }
 149
 150                 $this->output( "Done!\n" );
 151         }
 152 }
 153
 154 $maintClass = CleanupBlocks::class;
 155 require_once RUN_MAINTENANCE_IF_MAIN;