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  * @ingroup Maintenance
  21  * @author Rob Church <robchur@gmail.com>
  22  * @licence GNU General Public Licence 2.0 or later
  23  */
  24
  25 require_once( dirname( __FILE__ ) . '/Maintenance.php' );
  26
  27 class ReassignEdits extends Maintenance {
  28         public function __construct() {
  29                 parent::__construct();
  30                 $this->mDescription = "Reassign edits from one user to another";
  31                 $this->addOption( "force", "Reassign even if the target user doesn't exist" );
  32                 $this->addOption( "norc", "Don't update the recent changes table" );
  33                 $this->addOption( "report", "Print out details of what would be changed, but don't update it" );
  34                 $this->addArg( 'from', 'Old user to take edits from' );
  35                 $this->addArg( 'to', 'New user to give edits to' );
  36         }
  37
  38         public function execute() {
  39                 if ( $this->hasArg( 0 ) && $this->hasArg( 1 ) ) {
  40                         # Set up the users involved
  41                         $from = $this->initialiseUser( $this->getArg( 0 ) );
  42                         $to   = $this->initialiseUser( $this->getArg( 1 ) );
  43
  44                         # If the target doesn't exist, and --force is not set, stop here
  45                         if ( $to->getId() || $this->hasOption( 'force' ) ) {
  46                                 # Reassign the edits
  47                                 $report = $this->hasOption( 'report' );
  48                                 $this->doReassignEdits( $from, $to, !$this->hasOption( 'norc' ), $report );
  49                                 # If reporting, and there were items, advise the user to run without --report
  50                                 if ( $report ) {
  51                                         $this->output( "Run the script again without --report to update.\n" );
  52                                 }
  53                         } else {
  54                                 $ton = $to->getName();
  55                                 $this->error( "User '{$ton}' not found." );
  56                         }
  57                 }
  58         }
  59
  60         /**
  61          * Reassign edits from one user to another
  62          *
  63          * @param $from User to take edits from
  64          * @param $to User to assign edits to
  65          * @param $rc Update the recent changes table
  66          * @param $report Don't change things; just echo numbers
  67          * @return integer Number of entries changed, or that would be changed
  68          */
  69         private function doReassignEdits( &$from, &$to, $rc = false, $report = false ) {
  70                 $dbw = wfGetDB( DB_MASTER );
  71                 $dbw->begin();
  72
  73                 # Count things
  74                 $this->output( "Checking current edits..." );
  75                 $res = $dbw->select( 'revision', 'COUNT(*) AS count', $this->userConditions( $from, 'rev_user', 'rev_user_text' ), __METHOD__ );
  76                 $row = $dbw->fetchObject( $res );
  77                 $cur = $row->count;
  78                 $this->output( "found {$cur}.\n" );
  79
  80                 $this->output( "Checking deleted edits..." );
  81                 $res = $dbw->select( 'archive', 'COUNT(*) AS count', $this->userConditions( $from, 'ar_user', 'ar_user_text' ), __METHOD__ );
  82                 $row = $dbw->fetchObject( $res );
  83                 $del = $row->count;
  84                 $this->output( "found {$del}.\n" );
  85
  86                 # Don't count recent changes if we're not supposed to
  87                 if ( $rc ) {
  88                         $this->output( "Checking recent changes..." );
  89                         $res = $dbw->select( 'recentchanges', 'COUNT(*) AS count', $this->userConditions( $from, 'rc_user', 'rc_user_text' ), __METHOD__ );
  90                         $row = $dbw->fetchObject( $res );
  91                         $rec = $row->count;
  92                         $this->output( "found {$rec}.\n" );
  93                 } else {
  94                         $rec = 0;
  95                 }
  96
  97                 $total = $cur + $del + $rec;
  98                 $this->output( "\nTotal entries to change: {$total}\n" );
  99
 100                 if ( !$report ) {
 101                         if ( $total ) {
 102                                 # Reassign edits
 103                                 $this->output( "\nReassigning current edits..." );
 104                                 $dbw->update( 'revision', $this->userSpecification( $to, 'rev_user', 'rev_user_text' ),
 105                                         $this->userConditions( $from, 'rev_user', 'rev_user_text' ), __METHOD__ );
 106                                 $this->output( "done.\nReassigning deleted edits..." );
 107                                 $dbw->update( 'archive', $this->userSpecification( $to, 'ar_user', 'ar_user_text' ),
 108                                         $this->userConditions( $from, 'ar_user', 'ar_user_text' ), __METHOD__ );
 109                                 $this->output( "done.\n" );
 110                                 # Update recent changes if required
 111                                 if ( $rc ) {
 112                                         $this->output( "Updating recent changes..." );
 113                                         $dbw->update( 'recentchanges', $this->userSpecification( $to, 'rc_user', 'rc_user_text' ),
 114                                                 $this->userConditions( $from, 'rc_user', 'rc_user_text' ), __METHOD__ );
 115                                         $this->output( "done.\n" );
 116                                 }
 117                         }
 118                 }
 119
 120                 $dbw->commit();
 121                 return (int)$total;
 122         }
 123
 124         /**
 125          * Return the most efficient set of user conditions
 126          * i.e. a user => id mapping, or a user_text => text mapping
 127          *
 128          * @param $user User for the condition
 129          * @param $idfield Field name containing the identifier
 130          * @param $utfield Field name containing the user text
 131          * @return array
 132          */
 133         private function userConditions( &$user, $idfield, $utfield ) {
 134                 return $user->getId() ? array( $idfield => $user->getId() ) : array( $utfield => $user->getName() );
 135         }
 136
 137         /**
 138          * Return user specifications
 139          * i.e. user => id, user_text => text
 140          *
 141          * @param $user User for the spec
 142          * @param $idfield Field name containing the identifier
 143          * @param $utfield Field name containing the user text
 144          * @return array
 145          */
 146         private function userSpecification( &$user, $idfield, $utfield ) {
 147                 return array( $idfield => $user->getId(), $utfield => $user->getName() );
 148         }
 149
 150         /**
 151          * Initialise the user object
 152          *
 153          * @param $username Username or IP address
 154          * @return User
 155          */
 156         private function initialiseUser( $username ) {
 157                 if ( User::isIP( $username ) ) {
 158                         $user = new User();
 159                         $user->setId( 0 );
 160                         $user->setName( $username );
 161                 } else {
 162                         $user = User::newFromName( $username );
 163                 }
 164                 $user->load();
 165                 return $user;
 166         }
 167
 168
 169 }
 170
 171 $maintClass = "ReassignEdits";
 172 require_once( RUN_MAINTENANCE_IF_MAIN );
 173