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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | * @file |
| 19 | */ |
| 20 | |
| 21 | namespace MediaWiki\Page; |
| 22 | |
| 23 | use IDBAccessObject; |
| 24 | use ManualLogEntry; |
| 25 | use MediaWiki\CommentStore\CommentStoreComment; |
| 26 | use MediaWiki\Config\ServiceOptions; |
| 27 | use MediaWiki\HookContainer\HookContainer; |
| 28 | use MediaWiki\HookContainer\HookRunner; |
| 29 | use MediaWiki\Language\RawMessage; |
| 30 | use MediaWiki\MainConfigNames; |
| 31 | use MediaWiki\Message\Converter; |
| 32 | use MediaWiki\Message\Message; |
| 33 | use MediaWiki\Permissions\Authority; |
| 34 | use MediaWiki\Permissions\PermissionStatus; |
| 35 | use MediaWiki\Revision\RevisionRecord; |
| 36 | use MediaWiki\Revision\RevisionStore; |
| 37 | use MediaWiki\Revision\SlotRecord; |
| 38 | use MediaWiki\Storage\EditResult; |
| 39 | use MediaWiki\Title\TitleFormatter; |
| 40 | use MediaWiki\Title\TitleValue; |
| 41 | use MediaWiki\User\ActorMigration; |
| 42 | use MediaWiki\User\ActorNormalization; |
| 43 | use MediaWiki\User\UserFactory; |
| 44 | use MediaWiki\User\UserIdentity; |
| 45 | use RecentChange; |
| 46 | use StatusValue; |
| 47 | use Wikimedia\Message\MessageValue; |
| 48 | use Wikimedia\Rdbms\IConnectionProvider; |
| 49 | use Wikimedia\Rdbms\IDatabase; |
| 50 | use Wikimedia\Rdbms\ReadOnlyMode; |
| 51 | use Wikimedia\Rdbms\SelectQueryBuilder; |
| 52 | |
| 53 | /** |
| 54 | * Backend logic for performing a page rollback action. |
| 55 | * |
| 56 | * @since 1.37 |
| 57 | */ |
| 58 | class RollbackPage { |
| 59 | |
| 60 | /** |
| 61 | * @internal For use in PageCommandFactory only |
| 62 | * @var array |
| 63 | */ |
| 64 | public const CONSTRUCTOR_OPTIONS = [ |
| 65 | MainConfigNames::UseRCPatrol, |
| 66 | MainConfigNames::DisableAnonTalk, |
| 67 | ]; |
| 68 | |
| 69 | /** @var string */ |
| 70 | private $summary = ''; |
| 71 | |
| 72 | /** @var bool */ |
| 73 | private $bot = false; |
| 74 | |
| 75 | /** @var string[] */ |
| 76 | private $tags = []; |
| 77 | |
| 78 | private ServiceOptions $options; |
| 79 | private IConnectionProvider $dbProvider; |
| 80 | private UserFactory $userFactory; |
| 81 | private ReadOnlyMode $readOnlyMode; |
| 82 | private RevisionStore $revisionStore; |
| 83 | private TitleFormatter $titleFormatter; |
| 84 | private HookRunner $hookRunner; |
| 85 | private WikiPageFactory $wikiPageFactory; |
| 86 | private ActorMigration $actorMigration; |
| 87 | private ActorNormalization $actorNormalization; |
| 88 | private PageIdentity $page; |
| 89 | private Authority $performer; |
| 90 | /** @var UserIdentity who made the edits we are rolling back */ |
| 91 | private UserIdentity $byUser; |
| 92 | |
| 93 | /** |
| 94 | * @internal Create via the RollbackPageFactory service. |
| 95 | */ |
| 96 | public function __construct( |
| 97 | ServiceOptions $options, |
| 98 | IConnectionProvider $dbProvider, |
| 99 | UserFactory $userFactory, |
| 100 | ReadOnlyMode $readOnlyMode, |
| 101 | RevisionStore $revisionStore, |
| 102 | TitleFormatter $titleFormatter, |
| 103 | HookContainer $hookContainer, |
| 104 | WikiPageFactory $wikiPageFactory, |
| 105 | ActorMigration $actorMigration, |
| 106 | ActorNormalization $actorNormalization, |
| 107 | PageIdentity $page, |
| 108 | Authority $performer, |
| 109 | UserIdentity $byUser |
| 110 | ) { |
| 111 | $options->assertRequiredOptions( self::CONSTRUCTOR_OPTIONS ); |
| 112 | $this->options = $options; |
| 113 | $this->dbProvider = $dbProvider; |
| 114 | $this->userFactory = $userFactory; |
| 115 | $this->readOnlyMode = $readOnlyMode; |
| 116 | $this->revisionStore = $revisionStore; |
| 117 | $this->titleFormatter = $titleFormatter; |
| 118 | $this->hookRunner = new HookRunner( $hookContainer ); |
| 119 | $this->wikiPageFactory = $wikiPageFactory; |
| 120 | $this->actorMigration = $actorMigration; |
| 121 | $this->actorNormalization = $actorNormalization; |
| 122 | |
| 123 | $this->page = $page; |
| 124 | $this->performer = $performer; |
| 125 | $this->byUser = $byUser; |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Set custom edit summary. |
| 130 | * |
| 131 | * @param string|null $summary |
| 132 | * @return $this |
| 133 | */ |
| 134 | public function setSummary( ?string $summary ): self { |
| 135 | $this->summary = $summary ?? ''; |
| 136 | return $this; |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * Mark all reverted edits as bot. |
| 141 | * |
| 142 | * @param bool|null $bot |
| 143 | * @return $this |
| 144 | */ |
| 145 | public function markAsBot( ?bool $bot ): self { |
| 146 | if ( $bot && $this->performer->isAllowedAny( 'markbotedits', 'bot' ) ) { |
| 147 | $this->bot = true; |
| 148 | } elseif ( !$bot ) { |
| 149 | $this->bot = false; |
| 150 | } |
| 151 | return $this; |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Change tags to apply to the rollback. |
| 156 | * |
| 157 | * @note Callers are responsible for permission checks (with ChangeTags::canAddTagsAccompanyingChange) |
| 158 | * |
| 159 | * @param string[]|null $tags |
| 160 | * @return $this |
| 161 | */ |
| 162 | public function setChangeTags( ?array $tags ): self { |
| 163 | $this->tags = $tags ?: []; |
| 164 | return $this; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Authorize the rollback. |
| 169 | * |
| 170 | * @return PermissionStatus |
| 171 | */ |
| 172 | public function authorizeRollback(): PermissionStatus { |
| 173 | $permissionStatus = PermissionStatus::newEmpty(); |
| 174 | $this->performer->authorizeWrite( 'edit', $this->page, $permissionStatus ); |
| 175 | $this->performer->authorizeWrite( 'rollback', $this->page, $permissionStatus ); |
| 176 | |
| 177 | if ( $this->readOnlyMode->isReadOnly() ) { |
| 178 | $permissionStatus->fatal( 'readonlytext' ); |
| 179 | } |
| 180 | |
| 181 | return $permissionStatus; |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * Rollback the most recent consecutive set of edits to a page |
| 186 | * from the same user; fails if there are no eligible edits to |
| 187 | * roll back to, e.g. user is the sole contributor. This function |
| 188 | * performs permissions checks and executes ::rollback. |
| 189 | * |
| 190 | * @return StatusValue see ::rollback for return value documentation. |
| 191 | * In case the rollback is not allowed, PermissionStatus is returned. |
| 192 | */ |
| 193 | public function rollbackIfAllowed(): StatusValue { |
| 194 | $permissionStatus = $this->authorizeRollback(); |
| 195 | if ( !$permissionStatus->isGood() ) { |
| 196 | return $permissionStatus; |
| 197 | } |
| 198 | return $this->rollback(); |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Backend implementation of rollbackIfAllowed(). |
| 203 | * |
| 204 | * @note This function does NOT check ANY permissions, it just commits the |
| 205 | * rollback to the DB. Therefore, you should only call this function directly |
| 206 | * if you want to use custom permissions checks. If you don't, use |
| 207 | * ::rollbackIfAllowed() instead. |
| 208 | * |
| 209 | * @return StatusValue On success, wrapping the array with the following keys: |
| 210 | * 'summary' - rollback edit summary |
| 211 | * 'current-revision-record' - revision record that was current before rollback |
| 212 | * 'target-revision-record' - revision record we are rolling back to |
| 213 | * 'newid' => the id of the rollback revision |
| 214 | * 'tags' => the tags applied to the rollback |
| 215 | */ |
| 216 | public function rollback() { |
| 217 | // Begin revision creation cycle by creating a PageUpdater. |
| 218 | // If the page is changed concurrently after grabParentRevision(), the rollback will fail. |
| 219 | // TODO: move PageUpdater to PageStore or PageUpdaterFactory or something? |
| 220 | $updater = $this->wikiPageFactory->newFromTitle( $this->page )->newPageUpdater( $this->performer ); |
| 221 | $currentRevision = $updater->grabParentRevision(); |
| 222 | |
| 223 | if ( !$currentRevision ) { |
| 224 | // Something wrong... no page? |
| 225 | return StatusValue::newFatal( 'notanarticle' ); |
| 226 | } |
| 227 | |
| 228 | $currentEditor = $currentRevision->getUser( RevisionRecord::RAW ); |
| 229 | $currentEditorForPublic = $currentRevision->getUser( RevisionRecord::FOR_PUBLIC ); |
| 230 | // User name given should match up with the top revision. |
| 231 | if ( !$this->byUser->equals( $currentEditor ) ) { |
| 232 | $result = StatusValue::newGood( [ |
| 233 | 'current-revision-record' => $currentRevision |
| 234 | ] ); |
| 235 | $result->fatal( |
| 236 | 'alreadyrolled', |
| 237 | htmlspecialchars( $this->titleFormatter->getPrefixedText( $this->page ) ), |
| 238 | htmlspecialchars( $this->byUser->getName() ), |
| 239 | htmlspecialchars( $currentEditorForPublic ? $currentEditorForPublic->getName() : '' ) |
| 240 | ); |
| 241 | return $result; |
| 242 | } |
| 243 | |
| 244 | $dbw = $this->dbProvider->getPrimaryDatabase(); |
| 245 | |
| 246 | // Get the last edit not by this person... |
| 247 | // Note: these may not be public values |
| 248 | $actorWhere = $this->actorMigration->getWhere( $dbw, 'rev_user', $currentEditor ); |
| 249 | $queryBuilder = $this->revisionStore->newSelectQueryBuilder( $dbw ) |
| 250 | ->where( [ 'rev_page' => $currentRevision->getPageId(), 'NOT(' . $actorWhere['conds'] . ')' ] ) |
| 251 | ->useIndex( [ 'revision' => 'rev_page_timestamp' ] ) |
| 252 | ->orderBy( [ 'rev_timestamp', 'rev_id' ], SelectQueryBuilder::SORT_DESC ); |
| 253 | $targetRevisionRow = $queryBuilder->caller( __METHOD__ )->fetchRow(); |
| 254 | |
| 255 | if ( $targetRevisionRow === false ) { |
| 256 | // No one else ever edited this page |
| 257 | return StatusValue::newFatal( 'cantrollback' ); |
| 258 | } elseif ( $targetRevisionRow->rev_deleted & RevisionRecord::DELETED_TEXT |
| 259 | || $targetRevisionRow->rev_deleted & RevisionRecord::DELETED_USER |
| 260 | ) { |
| 261 | // Only admins can see this text |
| 262 | return StatusValue::newFatal( 'notvisiblerev' ); |
| 263 | } |
| 264 | |
| 265 | // Generate the edit summary if necessary |
| 266 | $targetRevision = $this->revisionStore |
| 267 | ->getRevisionById( $targetRevisionRow->rev_id, IDBAccessObject::READ_LATEST ); |
| 268 | |
| 269 | // Save |
| 270 | $flags = EDIT_UPDATE | EDIT_INTERNAL; |
| 271 | |
| 272 | if ( $this->performer->isAllowed( 'minoredit' ) ) { |
| 273 | $flags |= EDIT_MINOR; |
| 274 | } |
| 275 | |
| 276 | if ( $this->bot ) { |
| 277 | $flags |= EDIT_FORCE_BOT; |
| 278 | } |
| 279 | |
| 280 | // TODO: MCR: also log model changes in other slots, in case that becomes possible! |
| 281 | $currentContent = $currentRevision->getContent( SlotRecord::MAIN ); |
| 282 | $targetContent = $targetRevision->getContent( SlotRecord::MAIN ); |
| 283 | $changingContentModel = $targetContent->getModel() !== $currentContent->getModel(); |
| 284 | |
| 285 | // Build rollback revision: |
| 286 | // Restore old content |
| 287 | // TODO: MCR: test this once we can store multiple slots |
| 288 | foreach ( $targetRevision->getSlots()->getSlots() as $slot ) { |
| 289 | $updater->inheritSlot( $slot ); |
| 290 | } |
| 291 | |
| 292 | // Remove extra slots |
| 293 | // TODO: MCR: test this once we can store multiple slots |
| 294 | foreach ( $currentRevision->getSlotRoles() as $role ) { |
| 295 | if ( !$targetRevision->hasSlot( $role ) ) { |
| 296 | $updater->removeSlot( $role ); |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | $updater->markAsRevert( |
| 301 | EditResult::REVERT_ROLLBACK, |
| 302 | $currentRevision->getId(), |
| 303 | $targetRevision->getId() |
| 304 | ); |
| 305 | |
| 306 | // TODO: this logic should not be in the storage layer, it's here for compatibility |
| 307 | // with 1.31 behavior. Applying the 'autopatrol' right should be done in the same |
| 308 | // place the 'bot' right is handled, which is currently in EditPage::attemptSave. |
| 309 | if ( $this->options->get( MainConfigNames::UseRCPatrol ) && |
| 310 | $this->performer->authorizeWrite( 'autopatrol', $this->page ) |
| 311 | ) { |
| 312 | $updater->setRcPatrolStatus( RecentChange::PRC_AUTOPATROLLED ); |
| 313 | } |
| 314 | |
| 315 | $summary = $this->getSummary( $currentRevision, $targetRevision ); |
| 316 | |
| 317 | // Actually store the rollback |
| 318 | $rev = $updater->addTags( $this->tags )->saveRevision( |
| 319 | CommentStoreComment::newUnsavedComment( $summary ), |
| 320 | $flags |
| 321 | ); |
| 322 | |
| 323 | // This is done even on edit failure to have patrolling in that case (T64157). |
| 324 | $this->updateRecentChange( $dbw, $currentRevision, $targetRevision ); |
| 325 | |
| 326 | if ( !$updater->wasSuccessful() ) { |
| 327 | return $updater->getStatus(); |
| 328 | } |
| 329 | |
| 330 | // Report if the edit was not created because it did not change the content. |
| 331 | if ( !$updater->wasRevisionCreated() ) { |
| 332 | $result = StatusValue::newGood( [ |
| 333 | 'current-revision-record' => $currentRevision |
| 334 | ] ); |
| 335 | $result->fatal( |
| 336 | 'alreadyrolled', |
| 337 | htmlspecialchars( $this->titleFormatter->getPrefixedText( $this->page ) ), |
| 338 | htmlspecialchars( $this->byUser->getName() ), |
| 339 | htmlspecialchars( $currentEditorForPublic ? $currentEditorForPublic->getName() : '' ) |
| 340 | ); |
| 341 | return $result; |
| 342 | } |
| 343 | |
| 344 | if ( $changingContentModel ) { |
| 345 | // If the content model changed during the rollback, |
| 346 | // make sure it gets logged to Special:Log/contentmodel |
| 347 | $log = new ManualLogEntry( 'contentmodel', 'change' ); |
| 348 | $log->setPerformer( $this->performer->getUser() ); |
| 349 | $log->setTarget( new TitleValue( $this->page->getNamespace(), $this->page->getDBkey() ) ); |
| 350 | $log->setComment( $summary ); |
| 351 | $log->setParameters( [ |
| 352 | '4::oldmodel' => $currentContent->getModel(), |
| 353 | '5::newmodel' => $targetContent->getModel(), |
| 354 | ] ); |
| 355 | |
| 356 | $logId = $log->insert( $dbw ); |
| 357 | $log->publish( $logId ); |
| 358 | } |
| 359 | |
| 360 | $wikiPage = $this->wikiPageFactory->newFromTitle( $this->page ); |
| 361 | |
| 362 | $this->hookRunner->onRollbackComplete( |
| 363 | $wikiPage, |
| 364 | $this->performer->getUser(), |
| 365 | $targetRevision, |
| 366 | $currentRevision |
| 367 | ); |
| 368 | |
| 369 | return StatusValue::newGood( [ |
| 370 | 'summary' => $summary, |
| 371 | 'current-revision-record' => $currentRevision, |
| 372 | 'target-revision-record' => $targetRevision, |
| 373 | 'newid' => $rev->getId(), |
| 374 | 'tags' => array_merge( $this->tags, $updater->getEditResult()->getRevertTags() ) |
| 375 | ] ); |
| 376 | } |
| 377 | |
| 378 | /** |
| 379 | * Set patrolling and bot flag on the edits which get rolled back. |
| 380 | * |
| 381 | * @param IDatabase $dbw |
| 382 | * @param RevisionRecord $current |
| 383 | * @param RevisionRecord $target |
| 384 | */ |
| 385 | private function updateRecentChange( |
| 386 | IDatabase $dbw, |
| 387 | RevisionRecord $current, |
| 388 | RevisionRecord $target |
| 389 | ) { |
| 390 | $useRCPatrol = $this->options->get( MainConfigNames::UseRCPatrol ); |
| 391 | if ( !$this->bot && !$useRCPatrol ) { |
| 392 | return; |
| 393 | } |
| 394 | |
| 395 | $actorId = $this->actorNormalization->findActorId( $current->getUser( RevisionRecord::RAW ), $dbw ); |
| 396 | $timestamp = $dbw->timestamp( $target->getTimestamp() ); |
| 397 | $rows = $dbw->newSelectQueryBuilder() |
| 398 | ->select( [ 'rc_id', 'rc_patrolled' ] ) |
| 399 | ->from( 'recentchanges' ) |
| 400 | ->where( [ 'rc_cur_id' => $current->getPageId(), 'rc_actor' => $actorId, ] ) |
| 401 | ->andWhere( $dbw->buildComparison( '>', [ |
| 402 | 'rc_timestamp' => $timestamp, |
| 403 | 'rc_this_oldid' => $target->getId(), |
| 404 | ] ) ) |
| 405 | ->caller( __METHOD__ )->fetchResultSet(); |
| 406 | |
| 407 | $all = []; |
| 408 | $patrolled = []; |
| 409 | $unpatrolled = []; |
| 410 | foreach ( $rows as $row ) { |
| 411 | $all[] = (int)$row->rc_id; |
| 412 | if ( $row->rc_patrolled ) { |
| 413 | $patrolled[] = (int)$row->rc_id; |
| 414 | } else { |
| 415 | $unpatrolled[] = (int)$row->rc_id; |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | if ( $useRCPatrol && $this->bot ) { |
| 420 | // Mark all reverted edits as if they were made by a bot |
| 421 | // Also mark only unpatrolled reverted edits as patrolled |
| 422 | if ( $unpatrolled ) { |
| 423 | $dbw->newUpdateQueryBuilder() |
| 424 | ->update( 'recentchanges' ) |
| 425 | ->set( [ 'rc_bot' => 1, 'rc_patrolled' => RecentChange::PRC_AUTOPATROLLED ] ) |
| 426 | ->where( [ 'rc_id' => $unpatrolled ] ) |
| 427 | ->caller( __METHOD__ )->execute(); |
| 428 | } |
| 429 | if ( $patrolled ) { |
| 430 | $dbw->newUpdateQueryBuilder() |
| 431 | ->update( 'recentchanges' ) |
| 432 | ->set( [ 'rc_bot' => 1 ] ) |
| 433 | ->where( [ 'rc_id' => $patrolled ] ) |
| 434 | ->caller( __METHOD__ )->execute(); |
| 435 | } |
| 436 | } elseif ( $useRCPatrol ) { |
| 437 | // Mark only unpatrolled reverted edits as patrolled |
| 438 | if ( $unpatrolled ) { |
| 439 | $dbw->newUpdateQueryBuilder() |
| 440 | ->update( 'recentchanges' ) |
| 441 | ->set( [ 'rc_patrolled' => RecentChange::PRC_AUTOPATROLLED ] ) |
| 442 | ->where( [ 'rc_id' => $unpatrolled ] ) |
| 443 | ->caller( __METHOD__ )->execute(); |
| 444 | } |
| 445 | } else { |
| 446 | // Edit is from a bot |
| 447 | if ( $all ) { |
| 448 | $dbw->newUpdateQueryBuilder() |
| 449 | ->update( 'recentchanges' ) |
| 450 | ->set( [ 'rc_bot' => 1 ] ) |
| 451 | ->where( [ 'rc_id' => $all ] ) |
| 452 | ->caller( __METHOD__ )->execute(); |
| 453 | } |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | /** |
| 458 | * Generate and format summary for the rollback. |
| 459 | * |
| 460 | * @param RevisionRecord $current |
| 461 | * @param RevisionRecord $target |
| 462 | * @return string |
| 463 | */ |
| 464 | private function getSummary( RevisionRecord $current, RevisionRecord $target ): string { |
| 465 | $revisionsBetween = $this->revisionStore->countRevisionsBetween( |
| 466 | $current->getPageId(), |
| 467 | $target, |
| 468 | $current, |
| 469 | 1000, |
| 470 | RevisionStore::INCLUDE_NEW |
| 471 | ); |
| 472 | $currentEditorForPublic = $current->getUser( RevisionRecord::FOR_PUBLIC ); |
| 473 | if ( $this->summary === '' ) { |
| 474 | if ( !$currentEditorForPublic ) { // no public user name |
| 475 | $summary = MessageValue::new( 'revertpage-nouser' ); |
| 476 | } elseif ( $this->options->get( MainConfigNames::DisableAnonTalk ) && |
| 477 | !$currentEditorForPublic->isRegistered() ) { |
| 478 | $summary = MessageValue::new( 'revertpage-anon' ); |
| 479 | } else { |
| 480 | $summary = MessageValue::new( 'revertpage' ); |
| 481 | } |
| 482 | } else { |
| 483 | $summary = $this->summary; |
| 484 | } |
| 485 | |
| 486 | $targetEditorForPublic = $target->getUser( RevisionRecord::FOR_PUBLIC ); |
| 487 | // Allow the custom summary to use the same args as the default message |
| 488 | $args = [ |
| 489 | $targetEditorForPublic ? $targetEditorForPublic->getName() : null, |
| 490 | $currentEditorForPublic ? $currentEditorForPublic->getName() : null, |
| 491 | $target->getId(), |
| 492 | Message::dateTimeParam( $target->getTimestamp() ), |
| 493 | $current->getId(), |
| 494 | Message::dateTimeParam( $current->getTimestamp() ), |
| 495 | $revisionsBetween, |
| 496 | ]; |
| 497 | if ( $summary instanceof MessageValue ) { |
| 498 | $summary = ( new Converter() )->convertMessageValue( $summary ); |
| 499 | $summary = $summary->params( $args )->inContentLanguage()->text(); |
| 500 | } else { |
| 501 | $summary = ( new RawMessage( $summary, $args ) )->inContentLanguage()->plain(); |
| 502 | } |
| 503 | |
| 504 | // Trim spaces on user supplied text |
| 505 | return trim( $summary ); |
| 506 | } |
| 507 | } |