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   1  <?php
   2  /**
   3   * Implements Special:Lockdb
   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 SpecialPage
  22   */
  23  
  24  /**
  25   * A form to make the database readonly (eg for maintenance purposes).
  26   *
  27   * @ingroup SpecialPage
  28   */
  29  class SpecialLockdb extends FormSpecialPage {
  30      protected $reason = '';
  31  
  32  	public function __construct() {
  33          parent::__construct( 'Lockdb', 'siteadmin' );
  34      }
  35  
  36  	public function requiresWrite() {
  37          return false;
  38      }
  39  
  40  	public function checkExecutePermissions( User $user ) {
  41          parent::checkExecutePermissions( $user );
  42          # If the lock file isn't writable, we can do sweet bugger all
  43          if ( !is_writable( dirname( $this->getConfig()->get( 'ReadOnlyFile' ) ) ) ) {
  44              throw new ErrorPageError( 'lockdb', 'lockfilenotwritable' );
  45          }
  46      }
  47  
  48  	protected function getFormFields() {
  49          return array(
  50              'Reason' => array(
  51                  'type' => 'textarea',
  52                  'rows' => 4,
  53                  'vertical-label' => true,
  54                  'label-message' => 'enterlockreason',
  55              ),
  56              'Confirm' => array(
  57                  'type' => 'toggle',
  58                  'label-message' => 'lockconfirm',
  59              ),
  60          );
  61      }
  62  
  63  	protected function alterForm( HTMLForm $form ) {
  64          $form->setWrapperLegend( false );
  65          $form->setHeaderText( $this->msg( 'lockdbtext' )->parseAsBlock() );
  66          $form->setSubmitTextMsg( 'lockbtn' );
  67      }
  68  
  69  	public function onSubmit( array $data ) {
  70          global $wgContLang;
  71  
  72          if ( !$data['Confirm'] ) {
  73              return Status::newFatal( 'locknoconfirm' );
  74          }
  75  
  76          wfSuppressWarnings();
  77          $fp = fopen( $this->getConfig()->get( 'ReadOnlyFile' ), 'w' );
  78          wfRestoreWarnings();
  79  
  80          if ( false === $fp ) {
  81              # This used to show a file not found error, but the likeliest reason for fopen()
  82              # to fail at this point is insufficient permission to write to the file...good old
  83              # is_writable() is plain wrong in some cases, it seems...
  84              return Status::newFatal( 'lockfilenotwritable' );
  85          }
  86          fwrite( $fp, $data['Reason'] );
  87          $timestamp = wfTimestampNow();
  88          fwrite( $fp, "\n<p>" . $this->msg( 'lockedbyandtime',
  89              $this->getUser()->getName(),
  90              $wgContLang->date( $timestamp, false, false ),
  91              $wgContLang->time( $timestamp, false, false )
  92          )->inContentLanguage()->text() . "</p>\n" );
  93          fclose( $fp );
  94  
  95          return Status::newGood();
  96      }
  97  
  98  	public function onSuccess() {
  99          $out = $this->getOutput();
 100          $out->addSubtitle( $this->msg( 'lockdbsuccesssub' ) );
 101          $out->addWikiMsg( 'lockdbsuccesstext' );
 102      }
 103  
 104  	protected function getGroupName() {
 105          return 'wiki';
 106      }
 107  }