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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\RenameUser; |
| 4 | |
| 5 | use MediaWiki\HookContainer\HookRunner; |
| 6 | use MediaWiki\JobQueue\JobQueueGroup; |
| 7 | use MediaWiki\JobQueue\JobSpecification; |
| 8 | use MediaWiki\Logger\LoggerFactory; |
| 9 | use MediaWiki\Logging\ManualLogEntry; |
| 10 | use MediaWiki\MainConfigNames; |
| 11 | use MediaWiki\MediaWikiServices; |
| 12 | use MediaWiki\RecentChanges\RecentChange; |
| 13 | use MediaWiki\Specials\SpecialLog; |
| 14 | use MediaWiki\Status\Status; |
| 15 | use MediaWiki\Title\TitleFactory; |
| 16 | use MediaWiki\User\User; |
| 17 | use MediaWiki\User\UserFactory; |
| 18 | use Psr\Log\LoggerInterface; |
| 19 | use Wikimedia\Rdbms\IConnectionProvider; |
| 20 | use Wikimedia\Rdbms\IDBAccessObject; |
| 21 | use Wikimedia\Rdbms\IReadableDatabase; |
| 22 | use Wikimedia\Rdbms\SelectQueryBuilder; |
| 23 | |
| 24 | /** |
| 25 | * Class which performs the actual renaming of users |
| 26 | */ |
| 27 | class RenameuserSQL { |
| 28 | /** |
| 29 | * The old username of the user being renamed |
| 30 | * |
| 31 | * @var string |
| 32 | */ |
| 33 | public $old; |
| 34 | |
| 35 | /** |
| 36 | * The new username of the user being renamed |
| 37 | * |
| 38 | * @var string |
| 39 | */ |
| 40 | public $new; |
| 41 | |
| 42 | /** |
| 43 | * The user ID of the user being renamed |
| 44 | * |
| 45 | * @var int |
| 46 | */ |
| 47 | public $uid; |
| 48 | |
| 49 | /** |
| 50 | * The [ tables => fields ] to be updated |
| 51 | * |
| 52 | * @var array |
| 53 | */ |
| 54 | public $tables; |
| 55 | |
| 56 | /** |
| 57 | * [ tables => fields ] to be updated in a deferred job |
| 58 | * |
| 59 | * @var array[] |
| 60 | */ |
| 61 | public $tablesJob; |
| 62 | |
| 63 | /** |
| 64 | * Flag that can be set to false, in case another process has already started |
| 65 | * the updates and the old username may have already been renamed in the user table. |
| 66 | * |
| 67 | * @var bool |
| 68 | */ |
| 69 | public $checkIfUserExists; |
| 70 | |
| 71 | /** |
| 72 | * User object of the user performing the rename, for logging purposes |
| 73 | * |
| 74 | * @var User |
| 75 | */ |
| 76 | private $renamer; |
| 77 | |
| 78 | /** |
| 79 | * Reason for the rename to be used in the log entry |
| 80 | * |
| 81 | * @var string |
| 82 | */ |
| 83 | private $reason = ''; |
| 84 | |
| 85 | /** |
| 86 | * A prefix to use in all debug log messages |
| 87 | * |
| 88 | * @var string |
| 89 | */ |
| 90 | private $debugPrefix = ''; |
| 91 | |
| 92 | /** |
| 93 | * Whether shared tables and virtual domains should be updated |
| 94 | * |
| 95 | * When this is set to true, it is assumed that the shared tables are already updated. |
| 96 | * |
| 97 | * @var bool |
| 98 | */ |
| 99 | private $derived = false; |
| 100 | |
| 101 | // B/C constants for tablesJob field |
| 102 | public const NAME_COL = 0; |
| 103 | public const UID_COL = 1; |
| 104 | public const TIME_COL = 2; |
| 105 | |
| 106 | /** @var HookRunner */ |
| 107 | private $hookRunner; |
| 108 | |
| 109 | /** @var IConnectionProvider */ |
| 110 | private $dbProvider; |
| 111 | |
| 112 | /** @var UserFactory */ |
| 113 | private $userFactory; |
| 114 | |
| 115 | /** @var JobQueueGroup */ |
| 116 | private $jobQueueGroup; |
| 117 | |
| 118 | /** @var TitleFactory */ |
| 119 | private $titleFactory; |
| 120 | |
| 121 | /** @var LoggerInterface */ |
| 122 | private $logger; |
| 123 | |
| 124 | /** @var int */ |
| 125 | private $updateRowsPerJob; |
| 126 | |
| 127 | /** |
| 128 | * Constructor |
| 129 | * |
| 130 | * @param string $old The old username |
| 131 | * @param string $new The new username |
| 132 | * @param int $uid |
| 133 | * @param User $renamer |
| 134 | * @param array $options Optional extra options. |
| 135 | * 'reason' - string, reason for the rename |
| 136 | * 'debugPrefix' - string, prefixed to debug messages |
| 137 | * 'checkIfUserExists' - bool, whether to update the user table |
| 138 | * 'derived' - bool, whether to skip updates to shared tables |
| 139 | */ |
| 140 | public function __construct( string $old, string $new, int $uid, User $renamer, $options = [] ) { |
| 141 | $services = MediaWikiServices::getInstance(); |
| 142 | $this->hookRunner = new HookRunner( $services->getHookContainer() ); |
| 143 | $this->dbProvider = $services->getConnectionProvider(); |
| 144 | $this->userFactory = $services->getUserFactory(); |
| 145 | $this->jobQueueGroup = $services->getJobQueueGroup(); |
| 146 | $this->titleFactory = $services->getTitleFactory(); |
| 147 | $this->logger = LoggerFactory::getInstance( 'Renameuser' ); |
| 148 | |
| 149 | $config = $services->getMainConfig(); |
| 150 | $this->updateRowsPerJob = $config->get( MainConfigNames::UpdateRowsPerJob ); |
| 151 | |
| 152 | $this->old = $old; |
| 153 | $this->new = $new; |
| 154 | $this->uid = $uid; |
| 155 | $this->renamer = $renamer; |
| 156 | $this->checkIfUserExists = true; |
| 157 | |
| 158 | if ( isset( $options['checkIfUserExists'] ) ) { |
| 159 | $this->checkIfUserExists = $options['checkIfUserExists']; |
| 160 | } |
| 161 | |
| 162 | if ( isset( $options['debugPrefix'] ) ) { |
| 163 | $this->debugPrefix = $options['debugPrefix']; |
| 164 | } |
| 165 | |
| 166 | if ( isset( $options['reason'] ) ) { |
| 167 | $this->reason = $options['reason']; |
| 168 | } |
| 169 | |
| 170 | if ( isset( $options['derived'] ) ) { |
| 171 | $this->derived = $options['derived']; |
| 172 | } |
| 173 | |
| 174 | $this->tables = []; // Immediate updates |
| 175 | $this->tablesJob = []; // Slow updates |
| 176 | |
| 177 | $this->hookRunner->onRenameUserSQL( $this ); |
| 178 | } |
| 179 | |
| 180 | protected function debug( string $msg ) { |
| 181 | if ( $this->debugPrefix ) { |
| 182 | $msg = "{$this->debugPrefix}: $msg"; |
| 183 | } |
| 184 | $this->logger->debug( $msg ); |
| 185 | } |
| 186 | |
| 187 | /** |
| 188 | * Do the rename operation |
| 189 | * @deprecated since 1.44 use renameUser |
| 190 | * @return bool |
| 191 | */ |
| 192 | public function rename() { |
| 193 | wfDeprecated( __METHOD__, '1.44' ); |
| 194 | return $this->renameUser()->isOK(); |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Do the rename operation |
| 199 | * @return Status |
| 200 | */ |
| 201 | public function renameUser(): Status { |
| 202 | $dbw = $this->dbProvider->getPrimaryDatabase(); |
| 203 | $atomicId = $dbw->startAtomic( __METHOD__, $dbw::ATOMIC_CANCELABLE ); |
| 204 | |
| 205 | $this->hookRunner->onRenameUserPreRename( $this->uid, $this->old, $this->new ); |
| 206 | |
| 207 | // Make sure the user exists if needed |
| 208 | if ( $this->checkIfUserExists ) { |
| 209 | // if derived is true and 'user' table is shared, |
| 210 | // then 'user.user_name' should already be updated |
| 211 | $userRenamed = $this->derived && self::isTableShared( 'user' ); |
| 212 | $currentName = $userRenamed ? $this->new : $this->old; |
| 213 | if ( !$this->lockUserAndGetId( $currentName ) ) { |
| 214 | $this->debug( "User $currentName does not exist, bailing out" ); |
| 215 | $dbw->cancelAtomic( __METHOD__, $atomicId ); |
| 216 | |
| 217 | return Status::newFatal( 'renameusererrordoesnotexist', $this->new ); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | // Grab the user's edit count before any updates are made; used later in a log entry |
| 222 | $contribs = $this->userFactory->newFromId( $this->uid )->getEditCount(); |
| 223 | |
| 224 | // Rename and touch the user before re-attributing edits to avoid users still being |
| 225 | // logged in and making new edits (under the old name) while being renamed. |
| 226 | $this->debug( "Starting rename of {$this->old} to {$this->new}" ); |
| 227 | if ( !$this->derived ) { |
| 228 | $this->debug( "Rename of {$this->old} to {$this->new} will update shared tables" ); |
| 229 | } |
| 230 | if ( $this->shouldUpdate( 'user' ) ) { |
| 231 | $this->debug( "Updating user table for {$this->old} to {$this->new}" ); |
| 232 | $dbw->newUpdateQueryBuilder() |
| 233 | ->update( 'user' ) |
| 234 | ->set( [ 'user_name' => $this->new, 'user_touched' => $dbw->timestamp() ] ) |
| 235 | ->where( [ 'user_name' => $this->old, 'user_id' => $this->uid ] ) |
| 236 | ->caller( __METHOD__ )->execute(); |
| 237 | } else { |
| 238 | $this->debug( "Skipping user table for rename from {$this->old} to {$this->new}" ); |
| 239 | } |
| 240 | if ( $this->shouldUpdate( 'actor' ) ) { |
| 241 | $this->debug( "Updating actor table for {$this->old} to {$this->new}" ); |
| 242 | $dbw->newUpdateQueryBuilder() |
| 243 | ->update( 'actor' ) |
| 244 | ->set( [ 'actor_name' => $this->new ] ) |
| 245 | ->where( [ 'actor_name' => $this->old, 'actor_user' => $this->uid ] ) |
| 246 | ->caller( __METHOD__ )->execute(); |
| 247 | } else { |
| 248 | $this->debug( "Skipping actor table for rename from {$this->old} to {$this->new}" ); |
| 249 | } |
| 250 | |
| 251 | // If this user is renaming themself, make sure that code below uses a proper name |
| 252 | if ( $this->renamer->getId() === $this->uid ) { |
| 253 | $this->renamer->setName( $this->new ); |
| 254 | } |
| 255 | |
| 256 | // Reset token to break login with central auth systems. |
| 257 | // Again, avoids user being logged in with old name. |
| 258 | $user = $this->userFactory->newFromId( $this->uid ); |
| 259 | |
| 260 | $user->load( IDBAccessObject::READ_LATEST ); |
| 261 | MediaWikiServices::getInstance()->getSessionManager()->invalidateSessionsForUser( $user ); |
| 262 | |
| 263 | // Purge user cache |
| 264 | $user->invalidateCache(); |
| 265 | |
| 266 | // Update the block_target table rows if this user has a block in there. |
| 267 | if ( $this->shouldUpdate( 'block_target' ) ) { |
| 268 | $this->debug( "Updating block_target table for {$this->old} to {$this->new}" ); |
| 269 | $dbw->newUpdateQueryBuilder() |
| 270 | ->update( 'block_target' ) |
| 271 | ->set( [ 'bt_user_text' => $this->new ] ) |
| 272 | ->where( [ 'bt_user' => $this->uid, 'bt_user_text' => $this->old ] ) |
| 273 | ->caller( __METHOD__ )->execute(); |
| 274 | } else { |
| 275 | $this->debug( "Skipping block_target table for rename from {$this->old} to {$this->new}" ); |
| 276 | } |
| 277 | |
| 278 | // Update this users block/rights log. Ideally, the logs would be historical, |
| 279 | // but it is really annoying when users have "clean" block logs by virtue of |
| 280 | // being renamed, which makes admin tasks more of a pain... |
| 281 | $oldTitle = $this->titleFactory->makeTitle( NS_USER, $this->old ); |
| 282 | $newTitle = $this->titleFactory->makeTitle( NS_USER, $this->new ); |
| 283 | |
| 284 | // Exclude user renames per T200731 |
| 285 | $logTypesOnUser = array_diff( SpecialLog::getLogTypesOnUser(), [ 'renameuser' ] ); |
| 286 | |
| 287 | if ( $this->shouldUpdate( 'logging' ) ) { |
| 288 | $this->debug( "Updating logging table for {$this->old} to {$this->new}" ); |
| 289 | $dbw->newUpdateQueryBuilder() |
| 290 | ->update( 'logging' ) |
| 291 | ->set( [ 'log_title' => $newTitle->getDBkey() ] ) |
| 292 | ->where( [ |
| 293 | 'log_type' => $logTypesOnUser, |
| 294 | 'log_namespace' => NS_USER, |
| 295 | 'log_title' => $oldTitle->getDBkey() |
| 296 | ] ) |
| 297 | ->caller( __METHOD__ )->execute(); |
| 298 | } else { |
| 299 | $this->debug( "Skipping logging table for rename from {$this->old} to {$this->new}" ); |
| 300 | } |
| 301 | |
| 302 | if ( $this->shouldUpdate( 'recentchanges' ) ) { |
| 303 | $this->debug( "Updating recentchanges table for rename from {$this->old} to {$this->new}" ); |
| 304 | $dbw->newUpdateQueryBuilder() |
| 305 | ->update( 'recentchanges' ) |
| 306 | ->set( [ 'rc_title' => $newTitle->getDBkey() ] ) |
| 307 | ->where( [ |
| 308 | 'rc_source' => RecentChange::SRC_LOG, |
| 309 | 'rc_log_type' => $logTypesOnUser, |
| 310 | 'rc_namespace' => NS_USER, |
| 311 | 'rc_title' => $oldTitle->getDBkey() |
| 312 | ] ) |
| 313 | ->caller( __METHOD__ )->execute(); |
| 314 | } else { |
| 315 | $this->debug( "Skipping recentchanges table for rename from {$this->old} to {$this->new}" ); |
| 316 | } |
| 317 | |
| 318 | // Do immediate re-attribution table updates... |
| 319 | foreach ( $this->tables as $table => $fieldSet ) { |
| 320 | [ $nameCol, $userCol ] = $fieldSet; |
| 321 | if ( $this->shouldUpdate( $table ) ) { |
| 322 | $this->debug( "Updating {$table} table for rename from {$this->old} to {$this->new}" ); |
| 323 | $dbw->newUpdateQueryBuilder() |
| 324 | ->update( $table ) |
| 325 | ->set( [ $nameCol => $this->new ] ) |
| 326 | ->where( [ $nameCol => $this->old, $userCol => $this->uid ] ) |
| 327 | ->caller( __METHOD__ )->execute(); |
| 328 | } else { |
| 329 | $this->debug( "Skipping {$table} table for rename from {$this->old} to {$this->new}" ); |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | /** @var \MediaWiki\RenameUser\Job\RenameUserTableJob[] $jobs */ |
| 334 | $jobs = []; // jobs for all tables |
| 335 | // Construct jobqueue updates... |
| 336 | // FIXME: if a bureaucrat renames a user in error, they |
| 337 | // must be careful to wait until the rename finishes before |
| 338 | // renaming back. This is due to the fact the job "queue" |
| 339 | // is not really FIFO, so we might end up with a bunch of edits |
| 340 | // randomly mixed between the two new names. Some sort of rename |
| 341 | // lock might be in order... |
| 342 | foreach ( $this->tablesJob as $table => $params ) { |
| 343 | if ( !$this->shouldUpdate( $table ) ) { |
| 344 | $this->debug( "Skipping {$table} table for rename from {$this->old} to {$this->new}" ); |
| 345 | continue; |
| 346 | } |
| 347 | $this->debug( "Updating {$table} table for rename from {$this->old} to {$this->new}" ); |
| 348 | |
| 349 | $userTextC = $params[self::NAME_COL]; // some *_user_text column |
| 350 | $userIDC = $params[self::UID_COL]; // some *_user column |
| 351 | $timestampC = $params[self::TIME_COL]; // some *_timestamp column |
| 352 | |
| 353 | $res = $dbw->newSelectQueryBuilder() |
| 354 | ->select( [ $timestampC ] ) |
| 355 | ->from( $table ) |
| 356 | ->where( [ $userTextC => $this->old, $userIDC => $this->uid ] ) |
| 357 | ->orderBy( $timestampC, SelectQueryBuilder::SORT_ASC ) |
| 358 | ->caller( __METHOD__ )->fetchResultSet(); |
| 359 | |
| 360 | $jobParams = [ |
| 361 | 'table' => $table, |
| 362 | 'column' => $userTextC, |
| 363 | 'uidColumn' => $userIDC, |
| 364 | 'timestampColumn' => $timestampC, |
| 365 | 'oldname' => $this->old, |
| 366 | 'newname' => $this->new, |
| 367 | 'userID' => $this->uid, |
| 368 | // Timestamp column data for index optimizations |
| 369 | 'minTimestamp' => '0', |
| 370 | 'maxTimestamp' => '0', |
| 371 | 'count' => 0, |
| 372 | ]; |
| 373 | // Unique column for replica lag avoidance |
| 374 | if ( isset( $params['uniqueKey'] ) ) { |
| 375 | $jobParams['uniqueKey'] = $params['uniqueKey']; |
| 376 | } |
| 377 | |
| 378 | // Insert jobs into queue! |
| 379 | foreach ( $res as $row ) { |
| 380 | // Since the ORDER BY is ASC, set the min timestamp with first row |
| 381 | if ( $jobParams['count'] === 0 ) { |
| 382 | $jobParams['minTimestamp'] = $row->$timestampC; |
| 383 | } |
| 384 | // Keep updating the last timestamp, so it should be correct |
| 385 | // when the last item is added. |
| 386 | $jobParams['maxTimestamp'] = $row->$timestampC; |
| 387 | // Update row counter |
| 388 | $jobParams['count']++; |
| 389 | // Once a job has $wgUpdateRowsPerJob rows, add it to the queue |
| 390 | if ( $jobParams['count'] >= $this->updateRowsPerJob ) { |
| 391 | $jobs[] = new JobSpecification( 'renameUserTable', $jobParams, [], $oldTitle ); |
| 392 | $jobParams['minTimestamp'] = '0'; |
| 393 | $jobParams['maxTimestamp'] = '0'; |
| 394 | $jobParams['count'] = 0; |
| 395 | } |
| 396 | } |
| 397 | // If there are any job rows left, add it to the queue as one job |
| 398 | if ( $jobParams['count'] > 0 ) { |
| 399 | $jobs[] = new JobSpecification( 'renameUserTable', $jobParams, [], $oldTitle ); |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | // Log it! |
| 404 | $logEntry = new ManualLogEntry( 'renameuser', 'renameuser' ); |
| 405 | $logEntry->setPerformer( $this->renamer ); |
| 406 | $logEntry->setTarget( $oldTitle ); |
| 407 | $logEntry->setComment( $this->reason ); |
| 408 | $logEntry->setParameters( [ |
| 409 | '4::olduser' => $this->old, |
| 410 | '5::newuser' => $this->new, |
| 411 | '6::edits' => $contribs, |
| 412 | 'derived' => $this->derived |
| 413 | ] ); |
| 414 | $logid = $logEntry->insert(); |
| 415 | |
| 416 | // Insert any jobs as needed. If this fails, then an exception will be thrown and the |
| 417 | // DB transaction will be rolled back. If it succeeds but the DB commit fails, then the |
| 418 | // jobs will see that the transaction was not committed and will cancel themselves. |
| 419 | $count = count( $jobs ); |
| 420 | if ( $count > 0 ) { |
| 421 | $this->jobQueueGroup->push( $jobs ); |
| 422 | $this->debug( "Queued $count jobs for rename from {$this->old} to {$this->new}" ); |
| 423 | } |
| 424 | |
| 425 | // Commit the transaction |
| 426 | $dbw->endAtomic( __METHOD__ ); |
| 427 | |
| 428 | $fname = __METHOD__; |
| 429 | $dbw->onTransactionCommitOrIdle( |
| 430 | function () use ( $dbw, $logEntry, $logid, $fname ) { |
| 431 | $dbw->startAtomic( $fname ); |
| 432 | // Clear caches and inform authentication plugins |
| 433 | $user = $this->userFactory->newFromId( $this->uid ); |
| 434 | $user->load( IDBAccessObject::READ_LATEST ); |
| 435 | // Trigger the UserSaveSettings hook |
| 436 | $user->saveSettings(); |
| 437 | $this->hookRunner->onRenameUserComplete( $this->uid, $this->old, $this->new ); |
| 438 | // Publish to RC |
| 439 | $logEntry->publish( $logid ); |
| 440 | $dbw->endAtomic( $fname ); |
| 441 | }, |
| 442 | $fname |
| 443 | ); |
| 444 | |
| 445 | $this->debug( "Finished rename from {$this->old} to {$this->new}" ); |
| 446 | |
| 447 | return Status::newGood(); |
| 448 | } |
| 449 | |
| 450 | /** |
| 451 | * @param string $name Current wiki local username |
| 452 | * @return int Returns 0 if no row was found |
| 453 | */ |
| 454 | private function lockUserAndGetId( $name ) { |
| 455 | return (int)$this->dbProvider->getPrimaryDatabase()->newSelectQueryBuilder() |
| 456 | ->select( 'user_id' ) |
| 457 | ->forUpdate() |
| 458 | ->from( 'user' ) |
| 459 | ->where( [ 'user_name' => $name ] ) |
| 460 | ->caller( __METHOD__ )->fetchField(); |
| 461 | } |
| 462 | |
| 463 | /** |
| 464 | * Checks if a table should be updated in this rename. |
| 465 | * @param string $table |
| 466 | * @return bool |
| 467 | */ |
| 468 | private function shouldUpdate( string $table ) { |
| 469 | return !$this->derived || !self::isTableShared( $table ); |
| 470 | } |
| 471 | |
| 472 | /** |
| 473 | * Check if a table is shared. |
| 474 | * |
| 475 | * @param string $table The table name |
| 476 | * @return bool Returns true if the table is shared |
| 477 | */ |
| 478 | private static function isTableShared( string $table ) { |
| 479 | global $wgSharedTables, $wgSharedDB; |
| 480 | return $wgSharedDB && in_array( $table, $wgSharedTables, true ); |
| 481 | } |
| 482 | |
| 483 | /** |
| 484 | * This method does not check log_deleted, and thus will reveal the existence of hidden rename log |
| 485 | * entries. This seems unavoidable: we have to reveal that the username can't be registered when |
| 486 | * someone tries to register it, and there is no other plausible error message we could give. |
| 487 | * Please review whether that's appropriate for your use case when calling it. |
| 488 | * |
| 489 | * @since 1.47 |
| 490 | */ |
| 491 | public static function isPreviouslyRenamedAccount( string $username, IReadableDatabase $db ): bool { |
| 492 | return (bool)$db->newSelectQueryBuilder() |
| 493 | ->from( 'logging' ) |
| 494 | ->where( [ |
| 495 | 'log_type' => 'renameuser', |
| 496 | 'log_action' => 'renameuser', |
| 497 | 'log_namespace' => NS_USER, |
| 498 | 'log_title' => strtr( $username, ' ', '_' ), |
| 499 | ] ) |
| 500 | ->field( '1' ) |
| 501 | ->caller( __METHOD__ ) |
| 502 | ->fetchField(); |
| 503 | } |
| 504 | } |