summaryrefslogtreecommitdiff
path: root/includes/api/ApiPurge.php
blob: 7667b23529d627d39966fabfa9eb68c44719168f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
<?php

/**
 * API for MediaWiki 1.14+
 *
 * Created on Sep 2, 2008
 *
 * Copyright © 2008 Chad Horohoe
 *
 * 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
 */

/**
 * API interface for page purging
 * @ingroup API
 */
class ApiPurge extends ApiBase {
	private $mPageSet;

	/**
	 * Purges the cache of a page
	 */
	public function execute() {
		$params = $this->extractRequestParams();

		$this->getResult()->beginContinuation( $params['continue'], array(), array() );

		$forceLinkUpdate = $params['forcelinkupdate'];
		$forceRecursiveLinkUpdate = $params['forcerecursivelinkupdate'];
		$pageSet = $this->getPageSet();
		$pageSet->execute();

		$result = $pageSet->getInvalidTitlesAndRevisions();

		foreach ( $pageSet->getGoodTitles() as $title ) {
			$r = array();
			ApiQueryBase::addTitleInfo( $r, $title );
			$page = WikiPage::factory( $title );
			$page->doPurge(); // Directly purge and skip the UI part of purge().
			$r['purged'] = '';

			if ( $forceLinkUpdate || $forceRecursiveLinkUpdate ) {
				if ( !$this->getUser()->pingLimiter( 'linkpurge' ) ) {
					$popts = $page->makeParserOptions( 'canonical' );

					# Parse content; note that HTML generation is only needed if we want to cache the result.
					$content = $page->getContent( Revision::RAW );
					$enableParserCache = $this->getConfig()->get( 'EnableParserCache' );
					$p_result = $content->getParserOutput(
						$title,
						$page->getLatest(),
						$popts,
						$enableParserCache
					);

					# Update the links tables
					$updates = $content->getSecondaryDataUpdates(
						$title, null, $forceRecursiveLinkUpdate, $p_result );
					DataUpdate::runUpdates( $updates );

					$r['linkupdate'] = '';

					if ( $enableParserCache ) {
						$pcache = ParserCache::singleton();
						$pcache->save( $p_result, $page, $popts );
					}
				} else {
					$error = $this->parseMsg( array( 'actionthrottledtext' ) );
					$this->setWarning( $error['info'] );
					$forceLinkUpdate = false;
				}
			}

			$result[] = $r;
		}
		$apiResult = $this->getResult();
		$apiResult->setIndexedTagName( $result, 'page' );
		$apiResult->addValue( null, $this->getModuleName(), $result );

		$values = $pageSet->getNormalizedTitlesAsResult( $apiResult );
		if ( $values ) {
			$apiResult->addValue( null, 'normalized', $values );
		}
		$values = $pageSet->getConvertedTitlesAsResult( $apiResult );
		if ( $values ) {
			$apiResult->addValue( null, 'converted', $values );
		}
		$values = $pageSet->getRedirectTitlesAsResult( $apiResult );
		if ( $values ) {
			$apiResult->addValue( null, 'redirects', $values );
		}

		$apiResult->endContinuation();
	}

	/**
	 * Get a cached instance of an ApiPageSet object
	 * @return ApiPageSet
	 */
	private function getPageSet() {
		if ( !isset( $this->mPageSet ) ) {
			$this->mPageSet = new ApiPageSet( $this );
		}

		return $this->mPageSet;
	}

	public function isWriteMode() {
		return true;
	}

	public function mustBePosted() {
		// Anonymous users are not allowed a non-POST request
		return !$this->getUser()->isAllowed( 'purge' );
	}

	public function getAllowedParams( $flags = 0 ) {
		$result = array(
			'forcelinkupdate' => false,
			'forcerecursivelinkupdate' => false,
			'continue' => '',
		);
		if ( $flags ) {
			$result += $this->getPageSet()->getFinalParams( $flags );
		}

		return $result;
	}

	public function getParamDescription() {
		return $this->getPageSet()->getFinalParamDescription()
			+ array(
				'forcelinkupdate' => 'Update the links tables',
				'forcerecursivelinkupdate' => 'Update the links table, and update ' .
					'the links tables for any page that uses this page as a template',
				'continue' => 'When more results are available, use this to continue',
			);
	}

	public function getDescription() {
		return array( 'Purge the cache for the given titles.',
			'Requires a POST request if the user is not logged in.'
		);
	}

	public function getExamples() {
		return array(
			'api.php?action=purge&titles=Main_Page|API' => 'Purge the "Main Page" and the "API" page',
		);
	}

	public function getHelpUrls() {
		return 'https://www.mediawiki.org/wiki/API:Purge';
	}
}