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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Rest\Handler; |
| 4 | |
| 5 | use ChangeTags; |
| 6 | use MediaWiki\Page\ExistingPageRecord; |
| 7 | use MediaWiki\Page\PageLookup; |
| 8 | use MediaWiki\Permissions\GroupPermissionsLookup; |
| 9 | use MediaWiki\Rest\Handler\Helper\PageRedirectHelper; |
| 10 | use MediaWiki\Rest\Handler\Helper\PageRestHelperFactory; |
| 11 | use MediaWiki\Rest\LocalizedHttpException; |
| 12 | use MediaWiki\Rest\Response; |
| 13 | use MediaWiki\Rest\SimpleHandler; |
| 14 | use MediaWiki\Revision\RevisionRecord; |
| 15 | use MediaWiki\Revision\RevisionStore; |
| 16 | use MediaWiki\Storage\NameTableAccessException; |
| 17 | use MediaWiki\Storage\NameTableStore; |
| 18 | use MediaWiki\Storage\NameTableStoreFactory; |
| 19 | use MediaWiki\User\TempUser\TempUserConfig; |
| 20 | use Wikimedia\Message\MessageValue; |
| 21 | use Wikimedia\Message\ParamType; |
| 22 | use Wikimedia\Message\ScalarParam; |
| 23 | use Wikimedia\ObjectCache\WANObjectCache; |
| 24 | use Wikimedia\ParamValidator\ParamValidator; |
| 25 | use Wikimedia\Rdbms\IConnectionProvider; |
| 26 | use Wikimedia\Rdbms\IExpression; |
| 27 | use Wikimedia\Rdbms\RawSQLExpression; |
| 28 | |
| 29 | /** |
| 30 | * Handler class for Core REST API endpoints that perform operations on revisions |
| 31 | */ |
| 32 | class PageHistoryCountHandler extends SimpleHandler { |
| 33 | |
| 34 | /** The maximum number of counts to return per type of revision */ |
| 35 | private const COUNT_LIMITS = [ |
| 36 | 'anonymous' => 10000, |
| 37 | 'temporary' => 10000, |
| 38 | 'bot' => 10000, |
| 39 | 'editors' => 25000, |
| 40 | 'edits' => 30000, |
| 41 | 'minor' => 1000, |
| 42 | 'reverted' => 30000 |
| 43 | ]; |
| 44 | |
| 45 | private const DEPRECATED_COUNT_TYPES = [ |
| 46 | 'anonedits' => 'anonymous', |
| 47 | 'botedits' => 'bot', |
| 48 | 'revertededits' => 'reverted' |
| 49 | ]; |
| 50 | |
| 51 | private const MAX_AGE_200 = 60; |
| 52 | |
| 53 | private RevisionStore $revisionStore; |
| 54 | private NameTableStore $changeTagDefStore; |
| 55 | private GroupPermissionsLookup $groupPermissionsLookup; |
| 56 | private IConnectionProvider $dbProvider; |
| 57 | private PageLookup $pageLookup; |
| 58 | private WANObjectCache $cache; |
| 59 | private PageRestHelperFactory $helperFactory; |
| 60 | private TempUserConfig $tempUserConfig; |
| 61 | |
| 62 | /** @var RevisionRecord|false|null */ |
| 63 | private $revision = false; |
| 64 | |
| 65 | /** @var array|null */ |
| 66 | private $lastModifiedTimes; |
| 67 | |
| 68 | /** @var ExistingPageRecord|false|null */ |
| 69 | private $page = false; |
| 70 | |
| 71 | /** |
| 72 | * @param RevisionStore $revisionStore |
| 73 | * @param NameTableStoreFactory $nameTableStoreFactory |
| 74 | * @param GroupPermissionsLookup $groupPermissionsLookup |
| 75 | * @param IConnectionProvider $dbProvider |
| 76 | * @param WANObjectCache $cache |
| 77 | * @param PageLookup $pageLookup |
| 78 | * @param PageRestHelperFactory $helperFactory |
| 79 | * @param TempUserConfig $tempUserConfig |
| 80 | */ |
| 81 | public function __construct( |
| 82 | RevisionStore $revisionStore, |
| 83 | NameTableStoreFactory $nameTableStoreFactory, |
| 84 | GroupPermissionsLookup $groupPermissionsLookup, |
| 85 | IConnectionProvider $dbProvider, |
| 86 | WANObjectCache $cache, |
| 87 | PageLookup $pageLookup, |
| 88 | PageRestHelperFactory $helperFactory, |
| 89 | TempUserConfig $tempUserConfig |
| 90 | ) { |
| 91 | $this->revisionStore = $revisionStore; |
| 92 | $this->changeTagDefStore = $nameTableStoreFactory->getChangeTagDef(); |
| 93 | $this->groupPermissionsLookup = $groupPermissionsLookup; |
| 94 | $this->dbProvider = $dbProvider; |
| 95 | $this->cache = $cache; |
| 96 | $this->pageLookup = $pageLookup; |
| 97 | $this->helperFactory = $helperFactory; |
| 98 | $this->tempUserConfig = $tempUserConfig; |
| 99 | } |
| 100 | |
| 101 | private function getRedirectHelper(): PageRedirectHelper { |
| 102 | return $this->helperFactory->newPageRedirectHelper( |
| 103 | $this->getResponseFactory(), |
| 104 | $this->getRouter(), |
| 105 | $this->getPath(), |
| 106 | $this->getRequest() |
| 107 | ); |
| 108 | } |
| 109 | |
| 110 | private function normalizeType( $type ) { |
| 111 | return self::DEPRECATED_COUNT_TYPES[$type] ?? $type; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Validates that the provided parameter combination is supported. |
| 116 | * |
| 117 | * @param string $type |
| 118 | * @throws LocalizedHttpException |
| 119 | */ |
| 120 | private function validateParameterCombination( $type ) { |
| 121 | $params = $this->getValidatedParams(); |
| 122 | if ( !$params ) { |
| 123 | return; |
| 124 | } |
| 125 | |
| 126 | if ( $params['from'] || $params['to'] ) { |
| 127 | if ( $type === 'edits' || $type === 'editors' ) { |
| 128 | if ( !$params['from'] || !$params['to'] ) { |
| 129 | throw new LocalizedHttpException( |
| 130 | new MessageValue( 'rest-pagehistorycount-parameters-invalid' ), |
| 131 | 400 |
| 132 | ); |
| 133 | } |
| 134 | } else { |
| 135 | throw new LocalizedHttpException( |
| 136 | new MessageValue( 'rest-pagehistorycount-parameters-invalid' ), |
| 137 | 400 |
| 138 | ); |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * @param string $title the title of the page to load history for |
| 145 | * @param string $type the validated count type |
| 146 | * @return Response |
| 147 | * @throws LocalizedHttpException |
| 148 | */ |
| 149 | public function run( $title, $type ) { |
| 150 | $normalizedType = $this->normalizeType( $type ); |
| 151 | $this->validateParameterCombination( $normalizedType ); |
| 152 | $params = $this->getValidatedParams(); |
| 153 | $page = $this->getPage(); |
| 154 | |
| 155 | if ( !$page ) { |
| 156 | throw new LocalizedHttpException( |
| 157 | new MessageValue( 'rest-nonexistent-title', |
| 158 | [ new ScalarParam( ParamType::PLAINTEXT, $title ) ] |
| 159 | ), |
| 160 | 404 |
| 161 | ); |
| 162 | } |
| 163 | |
| 164 | if ( !$this->getAuthority()->authorizeRead( 'read', $page ) ) { |
| 165 | throw new LocalizedHttpException( |
| 166 | new MessageValue( 'rest-permission-denied-title', |
| 167 | [ new ScalarParam( ParamType::PLAINTEXT, $title ) ] |
| 168 | ), |
| 169 | 403 |
| 170 | ); |
| 171 | } |
| 172 | |
| 173 | '@phan-var \MediaWiki\Page\ExistingPageRecord $page'; |
| 174 | $redirectResponse = $this->getRedirectHelper()->createNormalizationRedirectResponseIfNeeded( |
| 175 | $page, |
| 176 | $params['title'] ?? null |
| 177 | ); |
| 178 | |
| 179 | if ( $redirectResponse !== null ) { |
| 180 | return $redirectResponse; |
| 181 | } |
| 182 | |
| 183 | $count = $this->getCount( $normalizedType ); |
| 184 | $countLimit = self::COUNT_LIMITS[$normalizedType]; |
| 185 | $response = $this->getResponseFactory()->createJson( [ |
| 186 | 'count' => $count > $countLimit ? $countLimit : $count, |
| 187 | 'limit' => $count > $countLimit |
| 188 | ] ); |
| 189 | $response->setHeader( 'Cache-Control', 'max-age=' . self::MAX_AGE_200 ); |
| 190 | |
| 191 | // Inform clients who use a deprecated "type" value, so they can adjust |
| 192 | if ( isset( self::DEPRECATED_COUNT_TYPES[$type] ) ) { |
| 193 | $docs = '<https://www.mediawiki.org/wiki/API:REST/History_API' . |
| 194 | '#Get_page_history_counts>; rel="deprecation"'; |
| 195 | $response->setHeader( 'Deprecation', 'version="v1"' ); |
| 196 | $response->setHeader( 'Link', $docs ); |
| 197 | } |
| 198 | |
| 199 | return $response; |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * @param string $type the validated count type |
| 204 | * @return int the article count |
| 205 | * @throws LocalizedHttpException |
| 206 | */ |
| 207 | private function getCount( $type ) { |
| 208 | $pageId = $this->getPage()->getId(); |
| 209 | switch ( $type ) { |
| 210 | case 'anonymous': |
| 211 | return $this->getCachedCount( $type, |
| 212 | function ( ?RevisionRecord $fromRev = null ) use ( $pageId ) { |
| 213 | return $this->getAnonCount( $pageId, $fromRev ); |
| 214 | } |
| 215 | ); |
| 216 | |
| 217 | case 'temporary': |
| 218 | return $this->getCachedCount( $type, |
| 219 | function ( ?RevisionRecord $fromRev = null ) use ( $pageId ) { |
| 220 | return $this->getTempCount( $pageId, $fromRev ); |
| 221 | } |
| 222 | ); |
| 223 | |
| 224 | case 'bot': |
| 225 | return $this->getCachedCount( $type, |
| 226 | function ( ?RevisionRecord $fromRev = null ) use ( $pageId ) { |
| 227 | return $this->getBotCount( $pageId, $fromRev ); |
| 228 | } |
| 229 | ); |
| 230 | |
| 231 | case 'editors': |
| 232 | $from = $this->getValidatedParams()['from'] ?? null; |
| 233 | $to = $this->getValidatedParams()['to'] ?? null; |
| 234 | if ( $from || $to ) { |
| 235 | return $this->getEditorsCount( |
| 236 | $pageId, |
| 237 | $from ? $this->getRevisionOrThrow( $from ) : null, |
| 238 | $to ? $this->getRevisionOrThrow( $to ) : null |
| 239 | ); |
| 240 | } else { |
| 241 | return $this->getCachedCount( $type, |
| 242 | function ( ?RevisionRecord $fromRev = null ) use ( $pageId ) { |
| 243 | return $this->getEditorsCount( $pageId, $fromRev ); |
| 244 | } ); |
| 245 | } |
| 246 | |
| 247 | case 'edits': |
| 248 | $from = $this->getValidatedParams()['from'] ?? null; |
| 249 | $to = $this->getValidatedParams()['to'] ?? null; |
| 250 | if ( $from || $to ) { |
| 251 | return $this->getEditsCount( |
| 252 | $pageId, |
| 253 | $from ? $this->getRevisionOrThrow( $from ) : null, |
| 254 | $to ? $this->getRevisionOrThrow( $to ) : null |
| 255 | ); |
| 256 | } else { |
| 257 | return $this->getCachedCount( $type, |
| 258 | function ( ?RevisionRecord $fromRev = null ) use ( $pageId ) { |
| 259 | return $this->getEditsCount( $pageId, $fromRev ); |
| 260 | } |
| 261 | ); |
| 262 | } |
| 263 | |
| 264 | case 'reverted': |
| 265 | return $this->getCachedCount( $type, |
| 266 | function ( ?RevisionRecord $fromRev = null ) use ( $pageId ) { |
| 267 | return $this->getRevertedCount( $pageId, $fromRev ); |
| 268 | } |
| 269 | ); |
| 270 | |
| 271 | case 'minor': |
| 272 | // The query for minor counts is inefficient for the database for pages with many revisions. |
| 273 | // If the specified title contains more revisions than allowed, we will return an error. |
| 274 | $editsCount = $this->getCachedCount( 'edits', |
| 275 | function ( ?RevisionRecord $fromRev = null ) use ( $pageId ) { |
| 276 | return $this->getEditsCount( $pageId, $fromRev ); |
| 277 | } |
| 278 | ); |
| 279 | if ( $editsCount > self::COUNT_LIMITS[$type] * 2 ) { |
| 280 | throw new LocalizedHttpException( |
| 281 | new MessageValue( 'rest-pagehistorycount-too-many-revisions' ), |
| 282 | 500 |
| 283 | ); |
| 284 | } |
| 285 | return $this->getCachedCount( $type, |
| 286 | function ( ?RevisionRecord $fromRev = null ) use ( $pageId ) { |
| 287 | return $this->getMinorCount( $pageId, $fromRev ); |
| 288 | } |
| 289 | ); |
| 290 | |
| 291 | default: |
| 292 | throw new LocalizedHttpException( |
| 293 | new MessageValue( 'rest-pagehistorycount-type-unrecognized', |
| 294 | [ new ScalarParam( ParamType::PLAINTEXT, $type ) ] |
| 295 | ), |
| 296 | 500 |
| 297 | ); |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * @return RevisionRecord|null current revision or false if unable to retrieve revision |
| 303 | */ |
| 304 | private function getCurrentRevision(): ?RevisionRecord { |
| 305 | if ( $this->revision === false ) { |
| 306 | $page = $this->getPage(); |
| 307 | if ( $page ) { |
| 308 | $this->revision = $this->revisionStore->getKnownCurrentRevision( $page ) ?: null; |
| 309 | } else { |
| 310 | $this->revision = null; |
| 311 | } |
| 312 | } |
| 313 | return $this->revision; |
| 314 | } |
| 315 | |
| 316 | /** |
| 317 | * @return ExistingPageRecord|null |
| 318 | */ |
| 319 | private function getPage(): ?ExistingPageRecord { |
| 320 | if ( $this->page === false ) { |
| 321 | $this->page = $this->pageLookup->getExistingPageByText( |
| 322 | $this->getValidatedParams()['title'] |
| 323 | ); |
| 324 | } |
| 325 | return $this->page; |
| 326 | } |
| 327 | |
| 328 | /** |
| 329 | * Returns latest of 2 timestamps: |
| 330 | * 1. Current revision |
| 331 | * 2. OR entry from the DB logging table for the given page |
| 332 | * @return int|null |
| 333 | */ |
| 334 | protected function getLastModified() { |
| 335 | $lastModifiedTimes = $this->getLastModifiedTimes(); |
| 336 | if ( $lastModifiedTimes ) { |
| 337 | return max( array_values( $lastModifiedTimes ) ); |
| 338 | } |
| 339 | return null; |
| 340 | } |
| 341 | |
| 342 | /** |
| 343 | * Returns array with 2 timestamps: |
| 344 | * 1. Current revision |
| 345 | * 2. OR entry from the DB logging table for the given page |
| 346 | * @return array|null |
| 347 | */ |
| 348 | protected function getLastModifiedTimes() { |
| 349 | $currentRev = $this->getCurrentRevision(); |
| 350 | if ( !$currentRev ) { |
| 351 | return null; |
| 352 | } |
| 353 | if ( $this->lastModifiedTimes === null ) { |
| 354 | $currentRevTime = (int)wfTimestampOrNull( TS_UNIX, $currentRev->getTimestamp() ); |
| 355 | $loggingTableTime = $this->loggingTableTime( $currentRev->getPageId() ); |
| 356 | $this->lastModifiedTimes = [ |
| 357 | 'currentRevTS' => $currentRevTime, |
| 358 | 'dependencyModTS' => $loggingTableTime |
| 359 | ]; |
| 360 | } |
| 361 | return $this->lastModifiedTimes; |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * Return timestamp of latest entry in logging table for given page id |
| 366 | * @param int $pageId |
| 367 | * @return int|null |
| 368 | */ |
| 369 | private function loggingTableTime( $pageId ) { |
| 370 | $res = $this->dbProvider->getReplicaDatabase()->newSelectQueryBuilder() |
| 371 | ->select( 'MAX(log_timestamp)' ) |
| 372 | ->from( 'logging' ) |
| 373 | ->where( [ 'log_page' => $pageId ] ) |
| 374 | ->caller( __METHOD__ )->fetchField(); |
| 375 | return $res ? (int)wfTimestamp( TS_UNIX, $res ) : null; |
| 376 | } |
| 377 | |
| 378 | /** |
| 379 | * Choosing to not implement etags in this handler. |
| 380 | * Generating an etag when getting revision counts must account for things like visibility settings |
| 381 | * (e.g. rev_deleted bit) which requires hitting the database anyway. The response for these |
| 382 | * requests are so small that we wouldn't be gaining much efficiency. |
| 383 | * Etags are strong validators and if provided would take precedence over |
| 384 | * last modified time, a weak validator. We want to ensure only last modified time is used |
| 385 | * since it is more efficient than using etags for this particular case. |
| 386 | * @return null |
| 387 | */ |
| 388 | protected function getEtag() { |
| 389 | return null; |
| 390 | } |
| 391 | |
| 392 | /** |
| 393 | * @param string $type |
| 394 | * @param callable $fetchCount |
| 395 | * @return int |
| 396 | */ |
| 397 | private function getCachedCount( $type, |
| 398 | callable $fetchCount |
| 399 | ) { |
| 400 | $pageId = $this->getPage()->getId(); |
| 401 | return $this->cache->getWithSetCallback( |
| 402 | $this->cache->makeKey( 'rest', 'pagehistorycount', $pageId, $type ), |
| 403 | WANObjectCache::TTL_WEEK, |
| 404 | function ( $oldValue ) use ( $fetchCount ) { |
| 405 | $currentRev = $this->getCurrentRevision(); |
| 406 | if ( $oldValue ) { |
| 407 | // Last modified timestamp was NOT a dependency change (e.g. revdel) |
| 408 | $doIncrementalUpdate = ( |
| 409 | // @phan-suppress-next-line PhanTypeArraySuspiciousNullable |
| 410 | $this->getLastModified() != $this->getLastModifiedTimes()['dependencyModTS'] |
| 411 | ); |
| 412 | if ( $doIncrementalUpdate ) { |
| 413 | $rev = $this->revisionStore->getRevisionById( $oldValue['revision'] ); |
| 414 | if ( $rev ) { |
| 415 | $additionalCount = $fetchCount( $rev ); |
| 416 | return [ |
| 417 | 'revision' => $currentRev->getId(), |
| 418 | 'count' => $oldValue['count'] + $additionalCount, |
| 419 | // @phan-suppress-next-line PhanTypeArraySuspiciousNullable |
| 420 | 'dependencyModTS' => $this->getLastModifiedTimes()['dependencyModTS'] |
| 421 | ]; |
| 422 | } |
| 423 | } |
| 424 | } |
| 425 | // Nothing was previously stored, or incremental update was done for too long, |
| 426 | // recalculate from scratch. |
| 427 | return [ |
| 428 | 'revision' => $currentRev->getId(), |
| 429 | 'count' => $fetchCount(), |
| 430 | // @phan-suppress-next-line PhanTypeArraySuspiciousNullable |
| 431 | 'dependencyModTS' => $this->getLastModifiedTimes()['dependencyModTS'] |
| 432 | ]; |
| 433 | }, |
| 434 | [ |
| 435 | 'touchedCallback' => function (){ |
| 436 | return $this->getLastModified(); |
| 437 | }, |
| 438 | 'version' => 2, |
| 439 | 'lockTSE' => WANObjectCache::TTL_MINUTE * 5 |
| 440 | ] |
| 441 | )['count']; |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * @param int $pageId the id of the page to load history for |
| 446 | * @param RevisionRecord|null $fromRev |
| 447 | * @return int the count |
| 448 | */ |
| 449 | protected function getAnonCount( $pageId, ?RevisionRecord $fromRev = null ) { |
| 450 | $dbr = $this->dbProvider->getReplicaDatabase(); |
| 451 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 452 | ->select( '1' ) |
| 453 | ->from( 'revision' ) |
| 454 | ->join( 'actor', null, 'rev_actor = actor_id' ) |
| 455 | ->where( [ |
| 456 | 'rev_page' => $pageId, |
| 457 | 'actor_user' => null, |
| 458 | $dbr->bitAnd( 'rev_deleted', |
| 459 | RevisionRecord::DELETED_TEXT | RevisionRecord::DELETED_USER ) => 0, |
| 460 | ] ) |
| 461 | ->limit( self::COUNT_LIMITS['anonymous'] + 1 ); // extra to detect truncation |
| 462 | |
| 463 | if ( $fromRev ) { |
| 464 | $queryBuilder->andWhere( $dbr->buildComparison( '>', [ |
| 465 | 'rev_timestamp' => $dbr->timestamp( $fromRev->getTimestamp() ), |
| 466 | 'rev_id' => $fromRev->getId(), |
| 467 | ] ) ); |
| 468 | } |
| 469 | |
| 470 | return $queryBuilder->caller( __METHOD__ )->fetchRowCount(); |
| 471 | } |
| 472 | |
| 473 | /** |
| 474 | * @param int $pageId the id of the page to load history for |
| 475 | * @param RevisionRecord|null $fromRev |
| 476 | * @return int the count |
| 477 | */ |
| 478 | protected function getTempCount( $pageId, ?RevisionRecord $fromRev = null ) { |
| 479 | if ( !$this->tempUserConfig->isKnown() ) { |
| 480 | return 0; |
| 481 | } |
| 482 | |
| 483 | $dbr = $this->dbProvider->getReplicaDatabase(); |
| 484 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 485 | ->select( '1' ) |
| 486 | ->from( 'revision' ) |
| 487 | ->join( 'actor', null, 'rev_actor = actor_id' ) |
| 488 | ->where( [ |
| 489 | 'rev_page' => $pageId, |
| 490 | $this->tempUserConfig->getMatchCondition( |
| 491 | $dbr, |
| 492 | 'actor_name', |
| 493 | IExpression::LIKE |
| 494 | ), |
| 495 | ] ) |
| 496 | ->andWhere( [ |
| 497 | $dbr->bitAnd( |
| 498 | 'rev_deleted', |
| 499 | RevisionRecord::DELETED_TEXT | RevisionRecord::DELETED_USER |
| 500 | ) => 0 |
| 501 | ] ) |
| 502 | ->limit( self::COUNT_LIMITS['temporary'] + 1 ); // extra to detect truncation |
| 503 | |
| 504 | if ( $fromRev ) { |
| 505 | $queryBuilder->andWhere( $dbr->buildComparison( '>', [ |
| 506 | 'rev_timestamp' => $dbr->timestamp( $fromRev->getTimestamp() ), |
| 507 | 'rev_id' => $fromRev->getId(), |
| 508 | ] ) ); |
| 509 | } |
| 510 | |
| 511 | return $queryBuilder->caller( __METHOD__ )->fetchRowCount(); |
| 512 | } |
| 513 | |
| 514 | /** |
| 515 | * @param int $pageId the id of the page to load history for |
| 516 | * @param RevisionRecord|null $fromRev |
| 517 | * @return int the count |
| 518 | */ |
| 519 | protected function getBotCount( $pageId, ?RevisionRecord $fromRev = null ) { |
| 520 | $dbr = $this->dbProvider->getReplicaDatabase(); |
| 521 | |
| 522 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 523 | ->select( '1' ) |
| 524 | ->from( 'revision' ) |
| 525 | ->join( 'actor', 'actor_rev_user', 'actor_rev_user.actor_id = rev_actor' ) |
| 526 | ->where( [ 'rev_page' => intval( $pageId ) ] ) |
| 527 | ->andWhere( [ |
| 528 | $dbr->bitAnd( |
| 529 | 'rev_deleted', |
| 530 | RevisionRecord::DELETED_TEXT | RevisionRecord::DELETED_USER |
| 531 | ) => 0 |
| 532 | ] ) |
| 533 | ->limit( self::COUNT_LIMITS['bot'] + 1 ); // extra to detect truncation |
| 534 | $subquery = $queryBuilder->newSubquery() |
| 535 | ->select( '1' ) |
| 536 | ->from( 'user_groups' ) |
| 537 | ->where( [ |
| 538 | 'actor_rev_user.actor_user = ug_user', |
| 539 | 'ug_group' => $this->groupPermissionsLookup->getGroupsWithPermission( 'bot' ), |
| 540 | $dbr->expr( 'ug_expiry', '=', null )->or( 'ug_expiry', '>=', $dbr->timestamp() ) |
| 541 | ] ); |
| 542 | |
| 543 | $queryBuilder->andWhere( new RawSQLExpression( 'EXISTS(' . $subquery->getSQL() . ')' ) ); |
| 544 | if ( $fromRev ) { |
| 545 | $queryBuilder->andWhere( $dbr->buildComparison( '>', [ |
| 546 | 'rev_timestamp' => $dbr->timestamp( $fromRev->getTimestamp() ), |
| 547 | 'rev_id' => $fromRev->getId(), |
| 548 | ] ) ); |
| 549 | } |
| 550 | |
| 551 | return $queryBuilder->caller( __METHOD__ )->fetchRowCount(); |
| 552 | } |
| 553 | |
| 554 | /** |
| 555 | * @param int $pageId the id of the page to load history for |
| 556 | * @param RevisionRecord|null $fromRev |
| 557 | * @param RevisionRecord|null $toRev |
| 558 | * @return int the count |
| 559 | */ |
| 560 | protected function getEditorsCount( $pageId, |
| 561 | ?RevisionRecord $fromRev = null, |
| 562 | ?RevisionRecord $toRev = null |
| 563 | ) { |
| 564 | [ $fromRev, $toRev ] = $this->orderRevisions( $fromRev, $toRev ); |
| 565 | return $this->revisionStore->countAuthorsBetween( $pageId, $fromRev, |
| 566 | $toRev, $this->getAuthority(), self::COUNT_LIMITS['editors'] ); |
| 567 | } |
| 568 | |
| 569 | /** |
| 570 | * @param int $pageId the id of the page to load history for |
| 571 | * @param RevisionRecord|null $fromRev |
| 572 | * @return int the count |
| 573 | */ |
| 574 | protected function getRevertedCount( $pageId, ?RevisionRecord $fromRev = null ) { |
| 575 | $tagIds = []; |
| 576 | |
| 577 | foreach ( ChangeTags::REVERT_TAGS as $tagName ) { |
| 578 | try { |
| 579 | $tagIds[] = $this->changeTagDefStore->getId( $tagName ); |
| 580 | } catch ( NameTableAccessException $e ) { |
| 581 | // If no revisions are tagged with a name, no tag id will be present |
| 582 | } |
| 583 | } |
| 584 | if ( !$tagIds ) { |
| 585 | return 0; |
| 586 | } |
| 587 | |
| 588 | $dbr = $this->dbProvider->getReplicaDatabase(); |
| 589 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 590 | ->select( '1' ) |
| 591 | ->from( 'revision' ) |
| 592 | ->join( 'change_tag', null, 'ct_rev_id = rev_id' ) |
| 593 | ->where( [ |
| 594 | 'rev_page' => $pageId, |
| 595 | 'ct_tag_id' => $tagIds, |
| 596 | $dbr->bitAnd( 'rev_deleted', RevisionRecord::DELETED_TEXT ) . " = 0" |
| 597 | ] ) |
| 598 | ->groupBy( 'rev_id' ) |
| 599 | ->limit( self::COUNT_LIMITS['reverted'] + 1 ); // extra to detect truncation |
| 600 | |
| 601 | if ( $fromRev ) { |
| 602 | $queryBuilder->andWhere( $dbr->buildComparison( '>', [ |
| 603 | 'rev_timestamp' => $dbr->timestamp( $fromRev->getTimestamp() ), |
| 604 | 'rev_id' => $fromRev->getId(), |
| 605 | ] ) ); |
| 606 | } |
| 607 | |
| 608 | return $queryBuilder->caller( __METHOD__ )->fetchRowCount(); |
| 609 | } |
| 610 | |
| 611 | /** |
| 612 | * @param int $pageId the id of the page to load history for |
| 613 | * @param RevisionRecord|null $fromRev |
| 614 | * @return int the count |
| 615 | */ |
| 616 | protected function getMinorCount( $pageId, ?RevisionRecord $fromRev = null ) { |
| 617 | $dbr = $this->dbProvider->getReplicaDatabase(); |
| 618 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 619 | ->select( '1' ) |
| 620 | ->from( 'revision' ) |
| 621 | ->where( [ |
| 622 | 'rev_page' => $pageId, |
| 623 | $dbr->expr( 'rev_minor_edit', '!=', 0 ), |
| 624 | $dbr->bitAnd( 'rev_deleted', RevisionRecord::DELETED_TEXT ) . " = 0" |
| 625 | ] ) |
| 626 | ->limit( self::COUNT_LIMITS['minor'] + 1 ); // extra to detect truncation |
| 627 | |
| 628 | if ( $fromRev ) { |
| 629 | $queryBuilder->andWhere( $dbr->buildComparison( '>', [ |
| 630 | 'rev_timestamp' => $dbr->timestamp( $fromRev->getTimestamp() ), |
| 631 | 'rev_id' => $fromRev->getId(), |
| 632 | ] ) ); |
| 633 | } |
| 634 | |
| 635 | return $queryBuilder->caller( __METHOD__ )->fetchRowCount(); |
| 636 | } |
| 637 | |
| 638 | /** |
| 639 | * @param int $pageId the id of the page to load history for |
| 640 | * @param RevisionRecord|null $fromRev |
| 641 | * @param RevisionRecord|null $toRev |
| 642 | * @return int the count |
| 643 | */ |
| 644 | protected function getEditsCount( |
| 645 | $pageId, |
| 646 | ?RevisionRecord $fromRev = null, |
| 647 | ?RevisionRecord $toRev = null |
| 648 | ) { |
| 649 | [ $fromRev, $toRev ] = $this->orderRevisions( $fromRev, $toRev ); |
| 650 | return $this->revisionStore->countRevisionsBetween( |
| 651 | $pageId, |
| 652 | $fromRev, |
| 653 | $toRev, |
| 654 | self::COUNT_LIMITS['edits'] // Will be increased by 1 to detect truncation |
| 655 | ); |
| 656 | } |
| 657 | |
| 658 | /** |
| 659 | * @param int $revId |
| 660 | * @return RevisionRecord |
| 661 | * @throws LocalizedHttpException |
| 662 | */ |
| 663 | private function getRevisionOrThrow( $revId ) { |
| 664 | $rev = $this->revisionStore->getRevisionById( $revId ); |
| 665 | if ( !$rev ) { |
| 666 | throw new LocalizedHttpException( |
| 667 | new MessageValue( 'rest-nonexistent-revision', [ $revId ] ), |
| 668 | 404 |
| 669 | ); |
| 670 | } |
| 671 | return $rev; |
| 672 | } |
| 673 | |
| 674 | /** |
| 675 | * Reorders revisions if they are present |
| 676 | * @param RevisionRecord|null $fromRev |
| 677 | * @param RevisionRecord|null $toRev |
| 678 | * @return array |
| 679 | * @phan-return array{0:RevisionRecord|null,1:RevisionRecord|null} |
| 680 | */ |
| 681 | private function orderRevisions( |
| 682 | ?RevisionRecord $fromRev = null, |
| 683 | ?RevisionRecord $toRev = null |
| 684 | ) { |
| 685 | if ( $fromRev && $toRev && ( $fromRev->getTimestamp() > $toRev->getTimestamp() || |
| 686 | ( $fromRev->getTimestamp() === $toRev->getTimestamp() |
| 687 | && $fromRev->getId() > $toRev->getId() ) ) |
| 688 | ) { |
| 689 | return [ $toRev, $fromRev ]; |
| 690 | } |
| 691 | return [ $fromRev, $toRev ]; |
| 692 | } |
| 693 | |
| 694 | public function needsWriteAccess() { |
| 695 | return false; |
| 696 | } |
| 697 | |
| 698 | public function getParamSettings() { |
| 699 | return [ |
| 700 | 'title' => [ |
| 701 | self::PARAM_SOURCE => 'path', |
| 702 | ParamValidator::PARAM_TYPE => 'string', |
| 703 | ParamValidator::PARAM_REQUIRED => true, |
| 704 | ], |
| 705 | 'type' => [ |
| 706 | self::PARAM_SOURCE => 'path', |
| 707 | ParamValidator::PARAM_TYPE => array_merge( |
| 708 | array_keys( self::COUNT_LIMITS ), |
| 709 | array_keys( self::DEPRECATED_COUNT_TYPES ) |
| 710 | ), |
| 711 | ParamValidator::PARAM_REQUIRED => true, |
| 712 | ], |
| 713 | 'from' => [ |
| 714 | self::PARAM_SOURCE => 'query', |
| 715 | ParamValidator::PARAM_TYPE => 'integer', |
| 716 | ParamValidator::PARAM_REQUIRED => false |
| 717 | ], |
| 718 | 'to' => [ |
| 719 | self::PARAM_SOURCE => 'query', |
| 720 | ParamValidator::PARAM_TYPE => 'integer', |
| 721 | ParamValidator::PARAM_REQUIRED => false |
| 722 | ] |
| 723 | ]; |
| 724 | } |
| 725 | } |