includes/specials/SpecialGoToInterwiki.php

   1 <?php
   2 /**
   3  * Implements Special:GoToInterwiki
   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  * Landing page for non-local interwiki links.
  26  *
  27  * Meant to warn people that the site they're visiting
  28  * is not the local wiki (In case of phishing tricks).
  29  * Only meant to be used for things that directly
  30  * redirect from url (e.g. Special:Search/google:foo )
  31  * Not meant for general interwiki linking (e.g.
  32  * [[google:foo]] should still directly link)
  33  *
  34  * @ingroup SpecialPage
  35  */
  36 class SpecialGoToInterwiki extends UnlistedSpecialPage {
  37         public function __construct( $name = 'GoToInterwiki' ) {
  38                 parent::__construct( $name );
  39         }
  40
  41         public function execute( $par ) {
  42                 $this->setHeaders();
  43                 $target = Title::newFromText( $par );
  44                 // Disallow special pages as a precaution against
  45                 // possible redirect loops.
  46                 if ( !$target || $target->isSpecialPage() ) {
  47                         $this->getOutput()->setStatusCode( 404 );
  48                         $this->getOutput()->addWikiMsg( 'gotointerwiki-invalid' );
  49                         return;
  50                 }
  51
  52                 $url = $target->getFullURL();
  53                 if ( !$target->isExternal() || $target->isLocal() ) {
  54                         // Either a normal page, or a local interwiki.
  55                         // just redirect.
  56                         $this->getOutput()->redirect( $url, '301' );
  57                 } else {
  58                         $this->getOutput()->addWikiMsg(
  59                                 'gotointerwiki-external',
  60                                 $url,
  61                                 $target->getFullText()
  62                         );
  63                 }
  64         }
  65
  66         /**
  67          * @return bool
  68          */
  69         public function requiresWrite() {
  70                 return false;
  71         }
  72
  73         /**
  74          * @return String
  75          */
  76         protected function getGroupName() {
  77                 return 'redirects';
  78         }
  79 }