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1<?php
2/**
3 * Redirect from Special:PermanentLink/### to index.php?oldid=###.
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
24namespace MediaWiki\Specials;
25
26use MediaWiki\HTMLForm\HTMLForm;
27use MediaWiki\SpecialPage\RedirectSpecialPage;
28use MediaWiki\Title\Title;
29
30/**
31 * Redirect from Special:PermanentLink/### to index.php?oldid=###.
32 *
33 * @ingroup SpecialPage
34 */
35class SpecialPermanentLink extends RedirectSpecialPage {
36    public function __construct() {
37        parent::__construct( 'PermanentLink' );
38        $this->mAllowedRedirectParams = [];
39    }
40
41    /**
42     * @param string|null $subpage
43     * @return Title|bool
44     */
45    public function getRedirect( $subpage ) {
46        $subpage = intval( $subpage );
47        if ( $subpage === 0 ) {
48            return false;
49        }
50        $this->mAddedRedirectParams['oldid'] = $subpage;
51
52        return true;
53    }
54
55    protected function showNoRedirectPage() {
56        $this->addHelpLink( 'Help:PermanentLink' );
57        $this->setHeaders();
58        $this->outputHeader();
59        $this->showForm();
60    }
61
62    private function showForm() {
63        HTMLForm::factory( 'ooui', [
64            'revid' => [
65                'type' => 'int',
66                'name' => 'revid',
67                'label-message' => 'permanentlink-revid',
68            ],
69        ], $this->getContext(), 'permanentlink' )
70            ->setSubmitTextMsg( 'permanentlink-submit' )
71            ->setSubmitCallback( [ $this, 'onFormSubmit' ] )
72            ->show();
73    }
74
75    public function onFormSubmit( $formData ) {
76        $revid = $formData['revid'];
77        $title = $this->getPageTitle( $revid ?: null );
78        $url = $title->getFullUrlForRedirect();
79        $this->getOutput()->redirect( $url );
80    }
81
82    public function isListed() {
83        return true;
84    }
85
86    protected function getGroupName() {
87        return 'redirects';
88    }
89}
90
91/**
92 * Retain the old class name for backwards compatibility.
93 * @deprecated since 1.41
94 */
95class_alias( SpecialPermanentLink::class, 'SpecialPermanentLink' );