maintenance/reassignEdits.php

   1 <?php
   2 /**
   3  * Reassign edits from a user or IP address to another user
   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  * @author Rob Church <robchur@gmail.com>
  23  * @license GPL-2.0-or-later
  24  */
  25
  26 use Wikimedia\Rdbms\IDatabase;
  27
  28 require_once __DIR__ . '/Maintenance.php';
  29
  30 /**
  31  * Maintenance script that reassigns edits from a user or IP address
  32  * to another user.
  33  *
  34  * @ingroup Maintenance
  35  */
  36 class ReassignEdits extends Maintenance {
  37         public function __construct() {
  38                 parent::__construct();
  39                 $this->addDescription( 'Reassign edits from one user to another' );
  40                 $this->addOption( "force", "Reassign even if the target user doesn't exist" );
  41                 $this->addOption( "norc", "Don't update the recent changes table" );
  42                 $this->addOption( "report", "Print out details of what would be changed, but don't update it" );
  43                 $this->addArg( 'from', 'Old user to take edits from' );
  44                 $this->addArg( 'to', 'New user to give edits to' );
  45         }
  46
  47         public function execute() {
  48                 if ( $this->hasArg( 0 ) && $this->hasArg( 1 ) ) {
  49                         # Set up the users involved
  50                         $from = $this->initialiseUser( $this->getArg( 0 ) );
  51                         $to = $this->initialiseUser( $this->getArg( 1 ) );
  52
  53                         # If the target doesn't exist, and --force is not set, stop here
  54                         if ( $to->getId() || $this->hasOption( 'force' ) ) {
  55                                 # Reassign the edits
  56                                 $report = $this->hasOption( 'report' );
  57                                 $this->doReassignEdits( $from, $to, !$this->hasOption( 'norc' ), $report );
  58                                 # If reporting, and there were items, advise the user to run without --report
  59                                 if ( $report ) {
  60                                         $this->output( "Run the script again without --report to update.\n" );
  61                                 }
  62                         } else {
  63                                 $ton = $to->getName();
  64                                 $this->error( "User '{$ton}' not found." );
  65                         }
  66                 }
  67         }
  68
  69         /**
  70          * Reassign edits from one user to another
  71          *
  72          * @param User $from User to take edits from
  73          * @param User $to User to assign edits to
  74          * @param bool $rc Update the recent changes table
  75          * @param bool $report Don't change things; just echo numbers
  76          * @return int Number of entries changed, or that would be changed
  77          */
  78         private function doReassignEdits( &$from, &$to, $rc = false, $report = false ) {
  79                 global $wgActorTableSchemaMigrationStage;
  80
  81                 $dbw = $this->getDB( DB_MASTER );
  82                 $this->beginTransaction( $dbw, __METHOD__ );
  83
  84                 # Count things
  85                 $this->output( "Checking current edits..." );
  86                 $revQueryInfo = ActorMigration::newMigration()->getWhere( $dbw, 'rev_user', $from );
  87                 $res = $dbw->select(
  88                         [ 'revision' ] + $revQueryInfo['tables'],
  89                         'COUNT(*) AS count',
  90                         $revQueryInfo['conds'],
  91                         __METHOD__,
  92                         [],
  93                         $revQueryInfo['joins']
  94                 );
  95                 $row = $dbw->fetchObject( $res );
  96                 $cur = $row->count;
  97                 $this->output( "found {$cur}.\n" );
  98
  99                 $this->output( "Checking deleted edits..." );
 100                 $arQueryInfo = ActorMigration::newMigration()->getWhere( $dbw, 'ar_user', $from, false );
 101                 $res = $dbw->select(
 102                         [ 'archive' ] + $arQueryInfo['tables'],
 103                         'COUNT(*) AS count',
 104                         $arQueryInfo['conds'],
 105                         __METHOD__,
 106                         [],
 107                         $arQueryInfo['joins']
 108                 );
 109                 $row = $dbw->fetchObject( $res );
 110                 $del = $row->count;
 111                 $this->output( "found {$del}.\n" );
 112
 113                 # Don't count recent changes if we're not supposed to
 114                 if ( $rc ) {
 115                         $this->output( "Checking recent changes..." );
 116                         $rcQueryInfo = ActorMigration::newMigration()->getWhere( $dbw, 'rc_user', $from, false );
 117                         $res = $dbw->select(
 118                                 [ 'recentchanges' ] + $rcQueryInfo['tables'],
 119                                 'COUNT(*) AS count',
 120                                 $rcQueryInfo['conds'],
 121                                 __METHOD__,
 122                                 [],
 123                                 $rcQueryInfo['joins']
 124                         );
 125                         $row = $dbw->fetchObject( $res );
 126                         $rec = $row->count;
 127                         $this->output( "found {$rec}.\n" );
 128                 } else {
 129                         $rec = 0;
 130                 }
 131
 132                 $total = $cur + $del + $rec;
 133                 $this->output( "\nTotal entries to change: {$total}\n" );
 134
 135                 if ( !$report ) {
 136                         if ( $total ) {
 137                                 # Reassign edits
 138                                 $this->output( "\nReassigning current edits..." );
 139                                 if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_OLD ) {
 140                                         $dbw->update(
 141                                                 'revision',
 142                                                 [
 143                                                         'rev_user' => $to->getId(),
 144                                                         'rev_user_text' => $to->getName(),
 145                                                 ],
 146                                                 $from->isLoggedIn()
 147                                                         ? [ 'rev_user' => $from->getId() ] : [ 'rev_user_text' => $from->getName() ],
 148                                                 __METHOD__
 149                                         );
 150                                 }
 151                                 if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_NEW ) {
 152                                         $dbw->update(
 153                                                 'revision_actor_temp',
 154                                                 [ 'revactor_actor' => $to->getActorId( $dbw ) ],
 155                                                 [ 'revactor_actor' => $from->getActorId() ],
 156                                                 __METHOD__
 157                                         );
 158                                 }
 159                                 $this->output( "done.\nReassigning deleted edits..." );
 160                                 $dbw->update( 'archive',
 161                                         $this->userSpecification( $dbw, $to, 'ar_user', 'ar_user_text', 'ar_actor' ),
 162                                         [ $arQueryInfo['conds'] ], __METHOD__ );
 163                                 $this->output( "done.\n" );
 164                                 # Update recent changes if required
 165                                 if ( $rc ) {
 166                                         $this->output( "Updating recent changes..." );
 167                                         $dbw->update( 'recentchanges',
 168                                                 $this->userSpecification( $dbw, $to, 'rc_user', 'rc_user_text', 'rc_actor' ),
 169                                                 [ $rcQueryInfo['conds'] ], __METHOD__ );
 170                                         $this->output( "done.\n" );
 171                                 }
 172                         }
 173                 }
 174
 175                 $this->commitTransaction( $dbw, __METHOD__ );
 176
 177                 return (int)$total;
 178         }
 179
 180         /**
 181          * Return user specifications for an UPDATE
 182          * i.e. user => id, user_text => text
 183          *
 184          * @param IDatabase $dbw Database handle
 185          * @param User $user User for the spec
 186          * @param string $idfield Field name containing the identifier
 187          * @param string $utfield Field name containing the user text
 188          * @param string $acfield Field name containing the actor ID
 189          * @return array
 190          */
 191         private function userSpecification( IDatabase $dbw, &$user, $idfield, $utfield, $acfield ) {
 192                 global $wgActorTableSchemaMigrationStage;
 193
 194                 $ret = [];
 195                 if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_OLD ) {
 196                         $ret += [
 197                                 $idfield => $user->getId(),
 198                                 $utfield => $user->getName(),
 199                         ];
 200                 }
 201                 if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_NEW ) {
 202                         $ret += [ $acfield => $user->getActorId( $dbw ) ];
 203                 }
 204                 return $ret;
 205         }
 206
 207         /**
 208          * Initialise the user object
 209          *
 210          * @param string $username Username or IP address
 211          * @return User
 212          */
 213         private function initialiseUser( $username ) {
 214                 if ( User::isIP( $username ) ) {
 215                         $user = new User();
 216                         $user->setId( 0 );
 217                         $user->setName( $username );
 218                 } else {
 219                         $user = User::newFromName( $username );
 220                         if ( !$user ) {
 221                                 $this->fatalError( "Invalid username" );
 222                         }
 223                 }
 224                 $user->load();
 225
 226                 return $user;
 227         }
 228 }
 229
 230 $maintClass = ReassignEdits::class;
 231 require_once RUN_MAINTENANCE_IF_MAIN;