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1<?php
2/**
3 * Copyright © 2015 Wikimedia Foundation and contributors
4 *
5 * @license GPL-2.0-or-later
6 * @file
7 */
8
9namespace MediaWiki\Api;
10
11use MediaWiki\ChangeTags\ChangeTagsStore;
12use MediaWiki\CommentFormatter\CommentFormatter;
13use MediaWiki\Content\IContentHandlerFactory;
14use MediaWiki\Content\Renderer\ContentRenderer;
15use MediaWiki\Content\Transform\ContentTransformer;
16use MediaWiki\MainConfigNames;
17use MediaWiki\ParamValidator\TypeDef\UserDef;
18use MediaWiki\Parser\ParserFactory;
19use MediaWiki\Revision\RevisionRecord;
20use MediaWiki\Revision\RevisionStore;
21use MediaWiki\Revision\SlotRoleRegistry;
22use MediaWiki\Title\NamespaceInfo;
23use MediaWiki\Title\Title;
24use MediaWiki\User\ActorMigration;
25use MediaWiki\User\TempUser\TempUserCreator;
26use MediaWiki\User\UserFactory;
27use Wikimedia\ParamValidator\ParamValidator;
28
29/**
30 * Query module to enumerate all revisions.
31 *
32 * @ingroup API
33 * @since 1.27
34 */
35class ApiQueryAllRevisions extends ApiQueryRevisionsBase {
36
37    private RevisionStore $revisionStore;
38    private ActorMigration $actorMigration;
39    private NamespaceInfo $namespaceInfo;
40    private ChangeTagsStore $changeTagsStore;
41
42    public function __construct(
43        ApiQuery $query,
44        string $moduleName,
45        RevisionStore $revisionStore,
46        IContentHandlerFactory $contentHandlerFactory,
47        ParserFactory $parserFactory,
48        SlotRoleRegistry $slotRoleRegistry,
49        ActorMigration $actorMigration,
50        NamespaceInfo $namespaceInfo,
51        ChangeTagsStore $changeTagsStore,
52        ContentRenderer $contentRenderer,
53        ContentTransformer $contentTransformer,
54        CommentFormatter $commentFormatter,
55        TempUserCreator $tempUserCreator,
56        UserFactory $userFactory
57    ) {
58        parent::__construct(
59            $query,
60            $moduleName,
61            'arv',
62            $revisionStore,
63            $contentHandlerFactory,
64            $parserFactory,
65            $slotRoleRegistry,
66            $contentRenderer,
67            $contentTransformer,
68            $commentFormatter,
69            $tempUserCreator,
70            $userFactory
71        );
72        $this->revisionStore = $revisionStore;
73        $this->actorMigration = $actorMigration;
74        $this->namespaceInfo = $namespaceInfo;
75        $this->changeTagsStore = $changeTagsStore;
76    }
77
78    /**
79     * @param ApiPageSet|null $resultPageSet
80     * @return void
81     */
82    protected function run( ?ApiPageSet $resultPageSet = null ) {
83        $db = $this->getDB();
84        $params = $this->extractRequestParams( false );
85
86        $result = $this->getResult();
87
88        $this->requireMaxOneParameter( $params, 'user', 'excludeuser' );
89
90        $tsField = 'rev_timestamp';
91        $idField = 'rev_id';
92        $pageField = 'rev_page';
93
94        // Namespace check is likely to be desired, but can't be done
95        // efficiently in SQL.
96        $miser_ns = null;
97        $needPageTable = false;
98        if ( $params['namespace'] !== null ) {
99            $params['namespace'] = array_unique( $params['namespace'] );
100            sort( $params['namespace'] );
101            if ( $params['namespace'] != $this->namespaceInfo->getValidNamespaces() ) {
102                $needPageTable = true;
103                if ( $this->getConfig()->get( MainConfigNames::MiserMode ) ) {
104                    $miser_ns = $params['namespace'];
105                } else {
106                    $this->addWhere( [ 'page_namespace' => $params['namespace'] ] );
107                }
108            }
109        }
110
111        if ( $resultPageSet === null ) {
112            $this->parseParameters( $params );
113            $queryBuilder = $this->revisionStore->newSelectQueryBuilder( $db )
114                ->joinComment()
115                ->joinPage();
116            $this->getQueryBuilder()->merge( $queryBuilder );
117        } else {
118            $this->limit = $this->getParameter( 'limit' ) ?: 10;
119            $this->addTables( [ 'revision' ] );
120            $this->addFields( [ 'rev_timestamp', 'rev_id' ] );
121
122            if ( $params['generatetitles'] ) {
123                $this->addFields( [ 'rev_page' ] );
124            }
125
126            if ( $params['user'] !== null || $params['excludeuser'] !== null ) {
127                $this->getQueryBuilder()->join( 'actor', 'actor_rev_user', 'actor_rev_user.actor_id = rev_actor' );
128            }
129
130            if ( $needPageTable ) {
131                $this->getQueryBuilder()->join( 'page', null, [ "$pageField = page_id" ] );
132                if ( (bool)$miser_ns ) {
133                    $this->addFields( [ 'page_namespace' ] );
134                }
135            }
136        }
137
138        // Seems to be needed to avoid a planner bug (T113901)
139        $this->addOption( 'STRAIGHT_JOIN' );
140
141        $dir = $params['dir'];
142        $this->addTimestampWhereRange( $tsField, $dir, $params['start'], $params['end'] );
143
144        if ( $this->fld_tags ) {
145            $this->addFields( [
146                'ts_tags' => $this->changeTagsStore->makeTagSummarySubquery( 'revision' )
147            ] );
148        }
149
150        if ( $params['user'] !== null ) {
151            $actorQuery = $this->actorMigration->getWhere( $db, 'rev_user', $params['user'] );
152            $this->addWhere( $actorQuery['conds'] );
153        } elseif ( $params['excludeuser'] !== null ) {
154            $actorQuery = $this->actorMigration->getWhere( $db, 'rev_user', $params['excludeuser'] );
155            $this->addWhere( 'NOT(' . $actorQuery['conds'] . ')' );
156        }
157
158        if ( $params['user'] !== null || $params['excludeuser'] !== null ) {
159            // Paranoia: avoid brute force searches (T19342)
160            if ( !$this->getAuthority()->isAllowed( 'deletedhistory' ) ) {
161                $bitmask = RevisionRecord::DELETED_USER;
162            } elseif ( !$this->getAuthority()->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
163                $bitmask = RevisionRecord::DELETED_USER | RevisionRecord::DELETED_RESTRICTED;
164            } else {
165                $bitmask = 0;
166            }
167            if ( $bitmask ) {
168                $this->addWhere( $db->bitAnd( 'rev_deleted', $bitmask ) . " != $bitmask" );
169            }
170        }
171
172        if ( $params['continue'] !== null ) {
173            $op = ( $dir == 'newer' ? '>=' : '<=' );
174            $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'timestamp', 'int' ] );
175            $this->addWhere( $db->buildComparison( $op, [
176                $tsField => $db->timestamp( $cont[0] ),
177                $idField => $cont[1],
178            ] ) );
179        }
180
181        $this->addOption( 'LIMIT', $this->limit + 1 );
182
183        $sort = ( $dir == 'newer' ? '' : ' DESC' );
184        $orderby = [];
185        // Targeting index rev_timestamp, user_timestamp, usertext_timestamp, or actor_timestamp.
186        // But 'user' is always constant for the latter three, so it doesn't matter here.
187        $orderby[] = "rev_timestamp $sort";
188        $orderby[] = "rev_id $sort";
189        $this->addOption( 'ORDER BY', $orderby );
190
191        $hookData = [];
192        $res = $this->select( __METHOD__, [], $hookData );
193
194        if ( $resultPageSet === null ) {
195            $this->executeGenderCacheFromResultWrapper( $res, __METHOD__ );
196        }
197
198        $pageMap = []; // Maps rev_page to array index
199        $count = 0;
200        $nextIndex = 0;
201        $generated = [];
202        foreach ( $res as $row ) {
203            if ( $count === 0 && $resultPageSet !== null ) {
204                // Set the non-continue since the list of all revisions is
205                // prone to having entries added at the start frequently.
206                $this->getContinuationManager()->addGeneratorNonContinueParam(
207                    $this, 'continue', "$row->rev_timestamp|$row->rev_id"
208                );
209            }
210            if ( ++$count > $this->limit ) {
211                // We've had enough
212                $this->setContinueEnumParameter( 'continue', "$row->rev_timestamp|$row->rev_id" );
213                break;
214            }
215
216            // Miser mode namespace check
217            if ( $miser_ns !== null && !in_array( $row->page_namespace, $miser_ns ) ) {
218                continue;
219            }
220
221            if ( $resultPageSet !== null ) {
222                if ( $params['generatetitles'] ) {
223                    $generated[$row->rev_page] = $row->rev_page;
224                } else {
225                    $generated[] = $row->rev_id;
226                }
227            } else {
228                $revision = $this->revisionStore->newRevisionFromRow( $row, 0, Title::newFromRow( $row ) );
229                $rev = $this->extractRevisionInfo( $revision, $row );
230
231                if ( !isset( $pageMap[$row->rev_page] ) ) {
232                    $index = $nextIndex++;
233                    $pageMap[$row->rev_page] = $index;
234                    $title = Title::newFromPageIdentity( $revision->getPage() );
235                    $a = [
236                        'pageid' => $title->getArticleID(),
237                        'revisions' => [ $rev ],
238                    ];
239                    ApiResult::setIndexedTagName( $a['revisions'], 'rev' );
240                    ApiQueryBase::addTitleInfo( $a, $title );
241                    $fit = $this->processRow( $row, $a['revisions'][0], $hookData ) &&
242                        $result->addValue( [ 'query', $this->getModuleName() ], $index, $a );
243                } else {
244                    $index = $pageMap[$row->rev_page];
245                    $fit = $this->processRow( $row, $rev, $hookData ) &&
246                        $result->addValue( [ 'query', $this->getModuleName(), $index, 'revisions' ], null, $rev );
247                }
248                if ( !$fit ) {
249                    $this->setContinueEnumParameter( 'continue', "$row->rev_timestamp|$row->rev_id" );
250                    break;
251                }
252            }
253        }
254
255        if ( $resultPageSet !== null ) {
256            if ( $params['generatetitles'] ) {
257                $resultPageSet->populateFromPageIDs( $generated );
258            } else {
259                $resultPageSet->populateFromRevisionIDs( $generated );
260            }
261        } else {
262            $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'page' );
263        }
264    }
265
266    /** @inheritDoc */
267    public function getAllowedParams() {
268        $ret = parent::getAllowedParams() + [
269            'user' => [
270                ParamValidator::PARAM_TYPE => 'user',
271                UserDef::PARAM_ALLOWED_USER_TYPES => [ 'name', 'ip', 'temp', 'id', 'interwiki' ],
272                UserDef::PARAM_RETURN_OBJECT => true,
273            ],
274            'namespace' => [
275                ParamValidator::PARAM_ISMULTI => true,
276                ParamValidator::PARAM_TYPE => 'namespace',
277                ParamValidator::PARAM_DEFAULT => null,
278            ],
279            'start' => [
280                ParamValidator::PARAM_TYPE => 'timestamp',
281            ],
282            'end' => [
283                ParamValidator::PARAM_TYPE => 'timestamp',
284            ],
285            'dir' => [
286                ParamValidator::PARAM_TYPE => [
287                    'newer',
288                    'older'
289                ],
290                ParamValidator::PARAM_DEFAULT => 'older',
291                ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
292                ApiBase::PARAM_HELP_MSG_PER_VALUE => [
293                    'newer' => 'api-help-paramvalue-direction-newer',
294                    'older' => 'api-help-paramvalue-direction-older',
295                ],
296            ],
297            'excludeuser' => [
298                ParamValidator::PARAM_TYPE => 'user',
299                UserDef::PARAM_ALLOWED_USER_TYPES => [ 'name', 'ip', 'temp', 'id', 'interwiki' ],
300                UserDef::PARAM_RETURN_OBJECT => true,
301            ],
302            'continue' => [
303                ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
304            ],
305            'generatetitles' => [
306                ParamValidator::PARAM_DEFAULT => false,
307            ],
308        ];
309
310        if ( $this->getConfig()->get( MainConfigNames::MiserMode ) ) {
311            $ret['namespace'][ApiBase::PARAM_HELP_MSG_APPEND] = [
312                'api-help-param-limited-in-miser-mode',
313            ];
314        }
315
316        return $ret;
317    }
318
319    /** @inheritDoc */
320    protected function getExamplesMessages() {
321        return [
322            'action=query&list=allrevisions&arvuser=Example&arvlimit=50'
323                => 'apihelp-query+allrevisions-example-user',
324            'action=query&list=allrevisions&arvdir=newer&arvlimit=50'
325                => 'apihelp-query+allrevisions-example-ns-any',
326        ];
327    }
328
329    /** @inheritDoc */
330    public function getHelpUrls() {
331        return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Allrevisions';
332    }
333}
334
335/** @deprecated class alias since 1.43 */
336class_alias( ApiQueryAllRevisions::class, 'ApiQueryAllRevisions' );