maintenance/nukePage.php

   1 <?php
   2 /**
   3  * Erase a page record from the database
   4  * Irreversible (can't use standard undelete) and does not update link tables
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  * http://www.gnu.org/copyleft/gpl.html
  20  *
  21  * @file
  22  * @ingroup Maintenance
  23  * @author Rob Church <robchur@gmail.com>
  24  */
  25
  26 require_once __DIR__ . '/Maintenance.php';
  27
  28 /**
  29  * Maintenance script that erases a page record from the database.
  30  *
  31  * @ingroup Maintenance
  32  */
  33 class NukePage extends Maintenance {
  34         public function __construct() {
  35                 parent::__construct();
  36                 $this->mDescription = "Remove a page record from the database";
  37                 $this->addOption( 'delete', "Actually delete the page" );
  38                 $this->addArg( 'title', 'Title to delete' );
  39         }
  40
  41         public function execute() {
  42
  43                 $name = $this->getArg();
  44                 $delete = $this->getOption( 'delete', false );
  45
  46                 $dbw = wfGetDB( DB_MASTER );
  47                 $dbw->begin( __METHOD__ );
  48
  49                 $tbl_pag = $dbw->tableName( 'page' );
  50                 $tbl_rec = $dbw->tableName( 'recentchanges' );
  51                 $tbl_rev = $dbw->tableName( 'revision' );
  52
  53                 # Get page ID
  54                 $this->output( "Searching for \"$name\"..." );
  55                 $title = Title::newFromText( $name );
  56                 if ( $title ) {
  57                         $id = $title->getArticleID();
  58                         $real = $title->getPrefixedText();
  59                         $isGoodArticle = $title->isContentPage();
  60                         $this->output( "found \"$real\" with ID $id.\n" );
  61
  62                         # Get corresponding revisions
  63                         $this->output( "Searching for revisions..." );
  64                         $res = $dbw->query( "SELECT rev_id FROM $tbl_rev WHERE rev_page = $id" );
  65                         $revs = array();
  66                         foreach ( $res as $row ) {
  67                                 $revs[] = $row->rev_id;
  68                         }
  69                         $count = count( $revs );
  70                         $this->output( "found $count.\n" );
  71
  72                         # Delete the page record and associated recent changes entries
  73                         if ( $delete ) {
  74                                 $this->output( "Deleting page record..." );
  75                                 $dbw->query( "DELETE FROM $tbl_pag WHERE page_id = $id" );
  76                                 $this->output( "done.\n" );
  77                                 $this->output( "Cleaning up recent changes..." );
  78                                 $dbw->query( "DELETE FROM $tbl_rec WHERE rc_cur_id = $id" );
  79                                 $this->output( "done.\n" );
  80                         }
  81
  82                         $dbw->commit( __METHOD__ );
  83
  84                         # Delete revisions as appropriate
  85                         if ( $delete && $count ) {
  86                                 $this->output( "Deleting revisions..." );
  87                                 $this->deleteRevisions( $revs );
  88                                 $this->output( "done.\n" );
  89                                 $this->purgeRedundantText( true );
  90                         }
  91
  92                         # Update stats as appropriate
  93                         if ( $delete ) {
  94                                 $this->output( "Updating site stats..." );
  95                                 $ga = $isGoodArticle ? -1 : 0; // if it was good, decrement that too
  96                                 $stats = new SiteStatsUpdate( 0, -$count, $ga, -1 );
  97                                 $stats->doUpdate();
  98                                 $this->output( "done.\n" );
  99                         }
 100                 } else {
 101                         $this->output( "not found in database.\n" );
 102                         $dbw->commit( __METHOD__ );
 103                 }
 104         }
 105
 106         public function deleteRevisions( $ids ) {
 107                 $dbw = wfGetDB( DB_MASTER );
 108                 $dbw->begin( __METHOD__ );
 109
 110                 $tbl_rev = $dbw->tableName( 'revision' );
 111
 112                 $set = implode( ', ', $ids );
 113                 $dbw->query( "DELETE FROM $tbl_rev WHERE rev_id IN ( $set )" );
 114
 115                 $dbw->commit( __METHOD__ );
 116         }
 117 }
 118
 119 $maintClass = "NukePage";
 120 require_once RUN_MAINTENANCE_IF_MAIN;