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   1  <?php
   2  /**
   3   * Cleanup all spam from a given hostname.
   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   */
  23  
  24  require_once  __DIR__ . '/Maintenance.php';
  25  
  26  /**
  27   * Maintenance script to cleanup all spam from a given hostname.
  28   *
  29   * @ingroup Maintenance
  30   */
  31  class CleanupSpam extends Maintenance {
  32  
  33  	public function __construct() {
  34          parent::__construct();
  35          $this->mDescription = "Cleanup all spam from a given hostname";
  36          $this->addOption( 'all', 'Check all wikis in $wgLocalDatabases' );
  37          $this->addOption( 'delete', 'Delete pages containing only spam instead of blanking them' );
  38          $this->addArg(
  39              'hostname',
  40              'Hostname that was spamming, single * wildcard in the beginning allowed'
  41          );
  42      }
  43  
  44  	public function execute() {
  45          global $IP, $wgLocalDatabases, $wgUser;
  46  
  47          $username = wfMessage( 'spambot_username' )->text();
  48          $wgUser = User::newFromName( $username );
  49          if ( !$wgUser ) {
  50              $this->error( "Invalid username specified in 'spambot_username' message: $username", true );
  51          }
  52          // Create the user if necessary
  53          if ( !$wgUser->getId() ) {
  54              $wgUser->addToDatabase();
  55          }
  56          $spec = $this->getArg();
  57          $like = LinkFilter::makeLikeArray( $spec );
  58          if ( !$like ) {
  59              $this->error( "Not a valid hostname specification: $spec", true );
  60          }
  61  
  62          if ( $this->hasOption( 'all' ) ) {
  63              // Clean up spam on all wikis
  64              $this->output( "Finding spam on " . count( $wgLocalDatabases ) . " wikis\n" );
  65              $found = false;
  66              foreach ( $wgLocalDatabases as $wikiID ) {
  67                  $dbr = wfGetDB( DB_SLAVE, array(), $wikiID );
  68  
  69                  $count = $dbr->selectField( 'externallinks', 'COUNT(*)',
  70                      array( 'el_index' . $dbr->buildLike( $like ) ), __METHOD__ );
  71                  if ( $count ) {
  72                      $found = true;
  73                      $cmd = wfShellWikiCmd( "$IP/maintenance/cleanupSpam.php",
  74                          array( '--wiki', $wikiID, $spec ) );
  75                      passthru( "$cmd | sed 's/^/$wikiID:  /'" );
  76                  }
  77              }
  78              if ( $found ) {
  79                  $this->output( "All done\n" );
  80              } else {
  81                  $this->output( "None found\n" );
  82              }
  83          } else {
  84              // Clean up spam on this wiki
  85  
  86              $dbr = wfGetDB( DB_SLAVE );
  87              $res = $dbr->select( 'externallinks', array( 'DISTINCT el_from' ),
  88                  array( 'el_index' . $dbr->buildLike( $like ) ), __METHOD__ );
  89              $count = $dbr->numRows( $res );
  90              $this->output( "Found $count articles containing $spec\n" );
  91              foreach ( $res as $row ) {
  92                  $this->cleanupArticle( $row->el_from, $spec );
  93              }
  94              if ( $count ) {
  95                  $this->output( "Done\n" );
  96              }
  97          }
  98      }
  99  
 100  	private function cleanupArticle( $id, $domain ) {
 101          $title = Title::newFromID( $id );
 102          if ( !$title ) {
 103              $this->error( "Internal error: no page for ID $id" );
 104  
 105              return;
 106          }
 107  
 108          $this->output( $title->getPrefixedDBkey() . " ..." );
 109          $rev = Revision::newFromTitle( $title );
 110          $currentRevId = $rev->getId();
 111  
 112          while ( $rev && ( $rev->isDeleted( Revision::DELETED_TEXT )
 113              || LinkFilter::matchEntry( $rev->getContent( Revision::RAW ), $domain ) )
 114          ) {
 115              $rev = $rev->getPrevious();
 116          }
 117  
 118          if ( $rev && $rev->getId() == $currentRevId ) {
 119              // The regex didn't match the current article text
 120              // This happens e.g. when a link comes from a template rather than the page itself
 121              $this->output( "False match\n" );
 122          } else {
 123              $dbw = wfGetDB( DB_MASTER );
 124              $dbw->begin( __METHOD__ );
 125              $page = WikiPage::factory( $title );
 126              if ( $rev ) {
 127                  // Revert to this revision
 128                  $content = $rev->getContent( Revision::RAW );
 129  
 130                  $this->output( "reverting\n" );
 131                  $page->doEditContent(
 132                      $content,
 133                      wfMessage( 'spam_reverting', $domain )->inContentLanguage()->text(),
 134                      EDIT_UPDATE,
 135                      $rev->getId()
 136                  );
 137              } elseif ( $this->hasOption( 'delete' ) ) {
 138                  // Didn't find a non-spammy revision, blank the page
 139                  $this->output( "deleting\n" );
 140                  $page->doDeleteArticle(
 141                      wfMessage( 'spam_deleting', $domain )->inContentLanguage()->text()
 142                  );
 143              } else {
 144                  // Didn't find a non-spammy revision, blank the page
 145                  $handler = ContentHandler::getForTitle( $title );
 146                  $content = $handler->makeEmptyContent();
 147  
 148                  $this->output( "blanking\n" );
 149                  $page->doEditContent(
 150                      $content,
 151                      wfMessage( 'spam_blanking', $domain )->inContentLanguage()->text()
 152                  );
 153              }
 154              $dbw->commit( __METHOD__ );
 155          }
 156      }
 157  }
 158  
 159  $maintClass = "CleanupSpam";
 160  require_once RUN_MAINTENANCE_IF_MAIN;