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  * @ingroup Maintenance
  22  * @author Rob Church <robchur@gmail.com>
  23  */
  24
  25 require_once( dirname( __FILE__ ) . '/Maintenance.php' );
  26
  27 class NukePage extends Maintenance {
  28         public function __construct() {
  29                 parent::__construct();
  30                 $this->mDescription = "Remove a page record from the database";
  31                 $this->addOption( 'delete', "Actually delete the page" );
  32                 $this->addArg( 'title', 'Title to delete' );
  33         }
  34
  35         public function execute() {
  36
  37                 $name = $this->getArg();
  38                 $delete = $this->getOption( 'delete', false );
  39
  40                 $dbw = wfGetDB( DB_MASTER );
  41                 $dbw->begin( __METHOD__ );
  42
  43                 $tbl_pag = $dbw->tableName( 'page' );
  44                 $tbl_rec = $dbw->tableName( 'recentchanges' );
  45                 $tbl_rev = $dbw->tableName( 'revision' );
  46
  47                 # Get page ID
  48                 $this->output( "Searching for \"$name\"..." );
  49                 $title = Title::newFromText( $name );
  50                 if ( $title ) {
  51                         $id   = $title->getArticleID();
  52                         $real = $title->getPrefixedText();
  53                         $isGoodArticle = $title->isContentPage();
  54                         $this->output( "found \"$real\" with ID $id.\n" );
  55
  56                         # Get corresponding revisions
  57                         $this->output( "Searching for revisions..." );
  58                         $res = $dbw->query( "SELECT rev_id FROM $tbl_rev WHERE rev_page = $id" );
  59                         $revs = array();
  60                         foreach ( $res as $row ) {
  61                                 $revs[] = $row->rev_id;
  62                         }
  63                         $count = count( $revs );
  64                         $this->output( "found $count.\n" );
  65
  66                         # Delete the page record and associated recent changes entries
  67                         if ( $delete ) {
  68                                 $this->output( "Deleting page record..." );
  69                                 $dbw->query( "DELETE FROM $tbl_pag WHERE page_id = $id" );
  70                                 $this->output( "done.\n" );
  71                                 $this->output( "Cleaning up recent changes..." );
  72                                 $dbw->query( "DELETE FROM $tbl_rec WHERE rc_cur_id = $id" );
  73                                 $this->output( "done.\n" );
  74                         }
  75
  76                         $dbw->commit( __METHOD__ );
  77
  78                         # Delete revisions as appropriate
  79                         if ( $delete && $count ) {
  80                                 $this->output( "Deleting revisions..." );
  81                                 $this->deleteRevisions( $revs );
  82                                 $this->output( "done.\n" );
  83                                 $this->purgeRedundantText( true );
  84                         }
  85
  86                         # Update stats as appropriate
  87                         if ( $delete ) {
  88                                 $this->output( "Updating site stats..." );
  89                                 $ga = $isGoodArticle ? -1 : 0; // if it was good, decrement that too
  90                                 $stats = new SiteStatsUpdate( 0, -$count, $ga, -1 );
  91                                 $stats->doUpdate();
  92                                 $this->output( "done.\n" );
  93                         }
  94                 } else {
  95                         $this->output( "not found in database.\n" );
  96                         $dbw->commit( __METHOD__ );
  97                 }
  98         }
  99
 100         public function deleteRevisions( $ids ) {
 101                 $dbw = wfGetDB( DB_MASTER );
 102                 $dbw->begin( __METHOD__ );
 103
 104                 $tbl_rev = $dbw->tableName( 'revision' );
 105
 106                 $set = implode( ', ', $ids );
 107                 $dbw->query( "DELETE FROM $tbl_rev WHERE rev_id IN ( $set )" );
 108
 109                 $dbw->commit( __METHOD__ );
 110         }
 111 }
 112
 113 $maintClass = "NukePage";
 114 require_once( RUN_MAINTENANCE_IF_MAIN );