MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / includes / specials / SpecialGoToInterwiki.php

diff --git a/includes/specials/SpecialGoToInterwiki.php b/includes/specials/SpecialGoToInterwiki.php
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+++ b/includes/specials/SpecialGoToInterwiki.php
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+<?php
+/**
+ * Implements Special:GoToInterwiki
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup SpecialPage
+ */
+
+/**
+ * Landing page for non-local interwiki links.
+ *
+ * Meant to warn people that the site they're visiting
+ * is not the local wiki (In case of phishing tricks).
+ * Only meant to be used for things that directly
+ * redirect from url (e.g. Special:Search/google:foo )
+ * Not meant for general interwiki linking (e.g.
+ * [[google:foo]] should still directly link)
+ *
+ * @ingroup SpecialPage
+ */
+class SpecialGoToInterwiki extends UnlistedSpecialPage {
+       public function __construct( $name = 'GoToInterwiki' ) {
+               parent::__construct( $name );
+       }
+
+       public function execute( $par ) {
+               $this->setHeaders();
+               $target = Title::newFromText( $par );
+               // Disallow special pages as a precaution against
+               // possible redirect loops.
+               if ( !$target || $target->isSpecialPage() ) {
+                       $this->getOutput()->setStatusCode( 404 );
+                       $this->getOutput()->addWikiMsg( 'gotointerwiki-invalid' );
+                       return;
+               }
+
+               $url = $target->getFullURL();
+               if ( !$target->isExternal() || $target->isLocal() ) {
+                       // Either a normal page, or a local interwiki.
+                       // just redirect.
+                       $this->getOutput()->redirect( $url, '301' );
+               } else {
+                       $this->getOutput()->addWikiMsg(
+                               'gotointerwiki-external',
+                               $url,
+                               $target->getFullText()
+                       );
+               }
+       }
+
+       /**
+        * @return bool
+        */
+       public function requiresWrite() {
+               return false;
+       }
+
+       /**
+        * @return String
+        */
+       protected function getGroupName() {
+               return 'redirects';
+       }
+}