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<?php
/**
* Reassign edits from a user or IP address to another user
*
* 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
* @author Rob Church <robchur@gmail.com>
* @licence GNU General Public Licence 2.0 or later
*/
require_once __DIR__ . '/Maintenance.php';
/**
* Maintenance script that reassigns edits from a user or IP address
* to another user.
*
* @ingroup Maintenance
*/
class ReassignEdits extends Maintenance {
public function __construct() {
parent::__construct();
$this->addDescription( 'Reassign edits from one user to another' );
$this->addOption( "force", "Reassign even if the target user doesn't exist" );
$this->addOption( "norc", "Don't update the recent changes table" );
$this->addOption( "report", "Print out details of what would be changed, but don't update it" );
$this->addArg( 'from', 'Old user to take edits from' );
$this->addArg( 'to', 'New user to give edits to' );
}
public function execute() {
if ( $this->hasArg( 0 ) && $this->hasArg( 1 ) ) {
# Set up the users involved
$from = $this->initialiseUser( $this->getArg( 0 ) );
$to = $this->initialiseUser( $this->getArg( 1 ) );
# If the target doesn't exist, and --force is not set, stop here
if ( $to->getId() || $this->hasOption( 'force' ) ) {
# Reassign the edits
$report = $this->hasOption( 'report' );
$this->doReassignEdits( $from, $to, !$this->hasOption( 'norc' ), $report );
# If reporting, and there were items, advise the user to run without --report
if ( $report ) {
$this->output( "Run the script again without --report to update.\n" );
}
} else {
$ton = $to->getName();
$this->error( "User '{$ton}' not found." );
}
}
}
/**
* Reassign edits from one user to another
*
* @param User $from User to take edits from
* @param User $to User to assign edits to
* @param bool $rc Update the recent changes table
* @param bool $report Don't change things; just echo numbers
* @return int Number of entries changed, or that would be changed
*/
private function doReassignEdits( &$from, &$to, $rc = false, $report = false ) {
$dbw = $this->getDB( DB_MASTER );
$this->beginTransaction( $dbw, __METHOD__ );
# Count things
$this->output( "Checking current edits..." );
$res = $dbw->select(
'revision',
'COUNT(*) AS count',
$this->userConditions( $from, 'rev_user', 'rev_user_text' ),
__METHOD__
);
$row = $dbw->fetchObject( $res );
$cur = $row->count;
$this->output( "found {$cur}.\n" );
$this->output( "Checking deleted edits..." );
$res = $dbw->select(
'archive',
'COUNT(*) AS count',
$this->userConditions( $from, 'ar_user', 'ar_user_text' ),
__METHOD__
);
$row = $dbw->fetchObject( $res );
$del = $row->count;
$this->output( "found {$del}.\n" );
# Don't count recent changes if we're not supposed to
if ( $rc ) {
$this->output( "Checking recent changes..." );
$res = $dbw->select(
'recentchanges',
'COUNT(*) AS count',
$this->userConditions( $from, 'rc_user', 'rc_user_text' ),
__METHOD__
);
$row = $dbw->fetchObject( $res );
$rec = $row->count;
$this->output( "found {$rec}.\n" );
} else {
$rec = 0;
}
$total = $cur + $del + $rec;
$this->output( "\nTotal entries to change: {$total}\n" );
if ( !$report ) {
if ( $total ) {
# Reassign edits
$this->output( "\nReassigning current edits..." );
$dbw->update( 'revision', $this->userSpecification( $to, 'rev_user', 'rev_user_text' ),
$this->userConditions( $from, 'rev_user', 'rev_user_text' ), __METHOD__ );
$this->output( "done.\nReassigning deleted edits..." );
$dbw->update( 'archive', $this->userSpecification( $to, 'ar_user', 'ar_user_text' ),
$this->userConditions( $from, 'ar_user', 'ar_user_text' ), __METHOD__ );
$this->output( "done.\n" );
# Update recent changes if required
if ( $rc ) {
$this->output( "Updating recent changes..." );
$dbw->update( 'recentchanges', $this->userSpecification( $to, 'rc_user', 'rc_user_text' ),
$this->userConditions( $from, 'rc_user', 'rc_user_text' ), __METHOD__ );
$this->output( "done.\n" );
}
}
}
$this->commitTransaction( $dbw, __METHOD__ );
return (int)$total;
}
/**
* Return the most efficient set of user conditions
* i.e. a user => id mapping, or a user_text => text mapping
*
* @param User $user User for the condition
* @param string $idfield Field name containing the identifier
* @param string $utfield Field name containing the user text
* @return array
*/
private function userConditions( &$user, $idfield, $utfield ) {
return $user->getId()
? [ $idfield => $user->getId() ]
: [ $utfield => $user->getName() ];
}
/**
* Return user specifications
* i.e. user => id, user_text => text
*
* @param User $user User for the spec
* @param string $idfield Field name containing the identifier
* @param string $utfield Field name containing the user text
* @return array
*/
private function userSpecification( &$user, $idfield, $utfield ) {
return [ $idfield => $user->getId(), $utfield => $user->getName() ];
}
/**
* Initialise the user object
*
* @param string $username Username or IP address
* @return User
*/
private function initialiseUser( $username ) {
if ( User::isIP( $username ) ) {
$user = new User();
$user->setId( 0 );
$user->setName( $username );
} else {
$user = User::newFromName( $username );
if ( !$user ) {
$this->error( "Invalid username", true );
}
}
$user->load();
return $user;
}
}
$maintClass = "ReassignEdits";
require_once RUN_MAINTENANCE_IF_MAIN;