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   1  <?php
   2  /**
   3   * Implements Special:Userlogout
   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   * Implements Special:Userlogout
  26   *
  27   * @ingroup SpecialPage
  28   */
  29  class SpecialUserlogout extends UnlistedSpecialPage {
  30  	function __construct() {
  31          parent::__construct( 'Userlogout' );
  32      }
  33  
  34  	function execute( $par ) {
  35          /**
  36           * Some satellite ISPs use broken precaching schemes that log people out straight after
  37           * they're logged in (bug 17790). Luckily, there's a way to detect such requests.
  38           */
  39          if ( isset( $_SERVER['REQUEST_URI'] ) && strpos( $_SERVER['REQUEST_URI'], '&amp;' ) !== false ) {
  40              wfDebug( "Special:Userlogout request {$_SERVER['REQUEST_URI']} looks suspicious, denying.\n" );
  41              throw new HttpError( 400, $this->msg( 'suspicious-userlogout' ), $this->msg( 'loginerror' ) );
  42          }
  43  
  44          $this->setHeaders();
  45          $this->outputHeader();
  46  
  47          $user = $this->getUser();
  48          $oldName = $user->getName();
  49          $user->logout();
  50  
  51          $loginURL = SpecialPage::getTitleFor( 'Userlogin' )->getFullURL(
  52              $this->getRequest()->getValues( 'returnto', 'returntoquery' ) );
  53  
  54          $out = $this->getOutput();
  55          $out->addWikiMsg( 'logouttext', $loginURL );
  56  
  57          // Hook.
  58          $injected_html = '';
  59          wfRunHooks( 'UserLogoutComplete', array( &$user, &$injected_html, $oldName ) );
  60          $out->addHTML( $injected_html );
  61  
  62          $out->returnToMain();
  63      }
  64  
  65  	protected function getGroupName() {
  66          return 'login';
  67      }
  68  }