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1<?php
2/**
3 * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
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\Languages\LanguageFactory;
24use MediaWiki\Languages\LanguageNameUtils;
25use MediaWiki\Pager\AllMessagesTablePager;
26use MediaWiki\Title\Title;
27use Wikimedia\ParamValidator\ParamValidator;
28
29/**
30 * A query action to return messages from site message cache
31 *
32 * @ingroup API
33 */
34class ApiQueryAllMessages extends ApiQueryBase {
35
36    private Language $contentLanguage;
37    private LanguageFactory $languageFactory;
38    private LanguageNameUtils $languageNameUtils;
39    private LocalisationCache $localisationCache;
40    private MessageCache $messageCache;
41
42    /**
43     * @param ApiQuery $query
44     * @param string $moduleName
45     * @param Language $contentLanguage
46     * @param LanguageFactory $languageFactory
47     * @param LanguageNameUtils $languageNameUtils
48     * @param LocalisationCache $localisationCache
49     * @param MessageCache $messageCache
50     */
51    public function __construct(
52        ApiQuery $query,
53        $moduleName,
54        Language $contentLanguage,
55        LanguageFactory $languageFactory,
56        LanguageNameUtils $languageNameUtils,
57        LocalisationCache $localisationCache,
58        MessageCache $messageCache
59    ) {
60        parent::__construct( $query, $moduleName, 'am' );
61        $this->contentLanguage = $contentLanguage;
62        $this->languageFactory = $languageFactory;
63        $this->languageNameUtils = $languageNameUtils;
64        $this->localisationCache = $localisationCache;
65        $this->messageCache = $messageCache;
66    }
67
68    public function execute() {
69        $params = $this->extractRequestParams();
70        if ( $params['lang'] === null ) {
71            $langObj = $this->getLanguage();
72        } elseif ( !$this->languageNameUtils->isValidCode( $params['lang'] ) ) {
73            $this->dieWithError(
74                [ 'apierror-invalidlang', $this->encodeParamName( 'lang' ) ], 'invalidlang'
75            );
76        } else {
77            $langObj = $this->languageFactory->getLanguage( $params['lang'] );
78        }
79
80        if ( $params['enableparser'] ) {
81            if ( $params['title'] !== null ) {
82                $title = Title::newFromText( $params['title'] );
83                if ( !$title || $title->isExternal() ) {
84                    $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $params['title'] ) ] );
85                }
86            } else {
87                $title = Title::newFromText( 'API' );
88            }
89        }
90
91        $prop = array_fill_keys( (array)$params['prop'], true );
92
93        // Determine which messages should we print
94        if ( in_array( '*', $params['messages'] ) ) {
95            $message_names = $this->localisationCache->getSubitemList( $langObj->getCode(), 'messages' ) ?? [];
96            if ( $params['includelocal'] ) {
97                $message_names = array_unique( array_merge(
98                    $message_names,
99                    // Pass in the content language code so we get local messages that have a
100                    // MediaWiki:msgkey page. We might theoretically miss messages that have no
101                    // MediaWiki:msgkey page but do have a MediaWiki:msgkey/lang page, but that's
102                    // just a stupid case.
103                    $this->messageCache->getAllMessageKeys( $this->contentLanguage->getCode() )
104                ) );
105            }
106            sort( $message_names );
107            $messages_target = $message_names;
108        } else {
109            $messages_target = $params['messages'];
110        }
111
112        // Filter messages that have the specified prefix
113        // Because we sorted the message array earlier, they will appear in a clump:
114        if ( isset( $params['prefix'] ) ) {
115            $skip = false;
116            $messages_filtered = [];
117            foreach ( $messages_target as $message ) {
118                if ( str_starts_with( $message, $params['prefix'] ) ) {
119                    if ( !$skip ) {
120                        $skip = true;
121                    }
122                    $messages_filtered[] = $message;
123                } elseif ( $skip ) {
124                    break;
125                }
126            }
127            $messages_target = $messages_filtered;
128        }
129
130        // Filter messages that contain specified string
131        if ( isset( $params['filter'] ) ) {
132            $messages_filtered = [];
133            foreach ( $messages_target as $message ) {
134                if ( str_contains( $message, $params['filter'] ) ) {
135                    $messages_filtered[] = $message;
136                }
137            }
138            $messages_target = $messages_filtered;
139        }
140
141        // Whether we have any sort of message customisation filtering
142        $customiseFilterEnabled = $params['customised'] !== 'all';
143        if ( $customiseFilterEnabled ) {
144            $customisedMessages = AllMessagesTablePager::getCustomisedStatuses(
145                array_map(
146                    [ $langObj, 'ucfirst' ],
147                    $messages_target
148                ),
149                $langObj->getCode(),
150                !$langObj->equals( $this->contentLanguage ),
151                $this->getDB()
152            );
153
154            $customised = $params['customised'] === 'modified';
155        }
156
157        // Get all requested messages and print the result
158        $skip = $params['from'] !== null;
159        $useto = $params['to'] !== null;
160        $result = $this->getResult();
161        foreach ( $messages_target as $message ) {
162            // Skip all messages up to $params['from']
163            if ( $skip && $message === $params['from'] ) {
164                $skip = false;
165            }
166
167            if ( $useto && $message > $params['to'] ) {
168                break;
169            }
170
171            if ( !$skip ) {
172                $a = [
173                    'name' => $message,
174                    'normalizedname' => MessageCache::normalizeKey( $message ),
175                ];
176
177                $args = [];
178                if ( isset( $params['args'] ) && count( $params['args'] ) != 0 ) {
179                    $args = $params['args'];
180                }
181
182                if ( $customiseFilterEnabled ) {
183                    $messageIsCustomised = isset( $customisedMessages['pages'][$langObj->ucfirst( $message )] );
184                    // @phan-suppress-next-line PhanPossiblyUndeclaredVariable customised is set when used
185                    if ( $customised === $messageIsCustomised ) {
186                        // @phan-suppress-next-line PhanPossiblyUndeclaredVariable customised is set when used
187                        if ( $customised ) {
188                            $a['customised'] = true;
189                        }
190                    } else {
191                        continue;
192                    }
193                }
194
195                $msg = $this->msg( $message, $args )->inLanguage( $langObj );
196
197                if ( !$msg->exists() ) {
198                    $a['missing'] = true;
199                } else {
200                    // Check if the parser is enabled:
201                    if ( $params['enableparser'] ) {
202                        // @phan-suppress-next-line PhanPossiblyUndeclaredVariable title is set when used
203                        $msgString = $msg->page( $title )->text();
204                    } else {
205                        $msgString = $msg->plain();
206                    }
207                    if ( !$params['nocontent'] ) {
208                        ApiResult::setContentValue( $a, 'content', $msgString );
209                    }
210                    if ( isset( $prop['default'] ) ) {
211                        $default = $this->msg( $message )->inLanguage( $langObj )->useDatabase( false );
212                        if ( !$default->exists() ) {
213                            $a['defaultmissing'] = true;
214                        } elseif ( $default->plain() != $msgString ) {
215                            $a['default'] = $default->plain();
216                        }
217                    }
218                }
219                $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $a );
220                if ( !$fit ) {
221                    $this->setContinueEnumParameter( 'from', $message );
222                    break;
223                }
224            }
225        }
226        $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'message' );
227    }
228
229    public function getCacheMode( $params ) {
230        if ( $params['lang'] === null ) {
231            // Language not specified, will be fetched from preferences
232            return 'anon-public-user-private';
233        } elseif ( $params['enableparser'] ) {
234            // User-specific parser options will be used
235            return 'anon-public-user-private';
236        } else {
237            // OK to cache
238            return 'public';
239        }
240    }
241
242    public function getAllowedParams() {
243        return [
244            'messages' => [
245                ParamValidator::PARAM_DEFAULT => '*',
246                ParamValidator::PARAM_ISMULTI => true,
247            ],
248            'prop' => [
249                ParamValidator::PARAM_ISMULTI => true,
250                ParamValidator::PARAM_TYPE => [
251                    'default'
252                ]
253            ],
254            'enableparser' => false,
255            'nocontent' => false,
256            'includelocal' => false,
257            'args' => [
258                ParamValidator::PARAM_ISMULTI => true,
259                ParamValidator::PARAM_ALLOW_DUPLICATES => true,
260            ],
261            'filter' => [],
262            'customised' => [
263                ParamValidator::PARAM_DEFAULT => 'all',
264                ParamValidator::PARAM_TYPE => [
265                    'all',
266                    'modified',
267                    'unmodified'
268                ]
269            ],
270            'lang' => null,
271            'from' => null,
272            'to' => null,
273            'title' => null,
274            'prefix' => null,
275        ];
276    }
277
278    protected function getExamplesMessages() {
279        return [
280            'action=query&meta=allmessages&amprefix=ipb-'
281                => 'apihelp-query+allmessages-example-ipb',
282            'action=query&meta=allmessages&ammessages=august|mainpage&amlang=de'
283                => 'apihelp-query+allmessages-example-de',
284        ];
285    }
286
287    public function getHelpUrls() {
288        return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Allmessages';
289    }
290}