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1<?php
2/**
3 * Copyright © 2015 Wikimedia Foundation and contributors
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 */
22
23use MediaWiki\Session\Token;
24use MediaWiki\Utils\MWTimestamp;
25use Wikimedia\ParamValidator\ParamValidator;
26
27/**
28 * @since 1.25
29 * @ingroup API
30 */
31class ApiCheckToken extends ApiBase {
32
33    public function execute() {
34        $params = $this->extractRequestParams();
35        $token = $params['token'];
36        $maxage = $params['maxtokenage'];
37        $salts = ApiQueryTokens::getTokenTypeSalts();
38
39        $res = [];
40
41        $tokenObj = ApiQueryTokens::getToken(
42            $this->getUser(), $this->getRequest()->getSession(), $salts[$params['type']]
43        );
44
45        if ( str_ends_with( $token, urldecode( Token::SUFFIX ) ) ) {
46            $this->addWarning( 'apiwarn-checktoken-percentencoding' );
47        }
48
49        if ( $tokenObj->match( $token, $maxage ) ) {
50            $res['result'] = 'valid';
51        } elseif ( $maxage !== null && $tokenObj->match( $token ) ) {
52            $res['result'] = 'expired';
53        } else {
54            $res['result'] = 'invalid';
55        }
56
57        $ts = Token::getTimestamp( $token );
58        if ( $ts !== null ) {
59            $mwts = new MWTimestamp();
60            $mwts->timestamp->setTimestamp( $ts );
61            $res['generated'] = $mwts->getTimestamp( TS_ISO_8601 );
62        }
63
64        $this->getResult()->addValue( null, $this->getModuleName(), $res );
65    }
66
67    public function getAllowedParams() {
68        return [
69            'type' => [
70                ParamValidator::PARAM_TYPE => array_keys( ApiQueryTokens::getTokenTypeSalts() ),
71                ParamValidator::PARAM_REQUIRED => true,
72            ],
73            'token' => [
74                ParamValidator::PARAM_TYPE => 'string',
75                ParamValidator::PARAM_REQUIRED => true,
76                ParamValidator::PARAM_SENSITIVE => true,
77            ],
78            'maxtokenage' => [
79                ParamValidator::PARAM_TYPE => 'integer',
80            ],
81        ];
82    }
83
84    protected function getExamplesMessages() {
85        return [
86            'action=checktoken&type=csrf&token=123ABC'
87                => 'apihelp-checktoken-example-simple',
88        ];
89    }
90
91    public function getHelpUrls() {
92        return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Checktoken';
93    }
94}