includes/MovePage.php

   1 <?php
   2
   3 /**
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  * http://www.gnu.org/copyleft/gpl.html
  18  *
  19  * @file
  20  */
  21
  22 use MediaWiki\Config\ServiceOptions;
  23 use MediaWiki\MediaWikiServices;
  24 use MediaWiki\Page\MovePageFactory;
  25 use MediaWiki\Permissions\PermissionManager;
  26 use MediaWiki\Revision\SlotRecord;
  27 use Wikimedia\Rdbms\IDatabase;
  28 use Wikimedia\Rdbms\LoadBalancer;
  29
  30 /**
  31  * Handles the backend logic of moving a page from one title
  32  * to another.
  33  *
  34  * @since 1.24
  35  */
  36 class MovePage {
  37
  38         /**
  39          * @var Title
  40          */
  41         protected $oldTitle;
  42
  43         /**
  44          * @var Title
  45          */
  46         protected $newTitle;
  47
  48         /**
  49          * @var ServiceOptions
  50          */
  51         protected $options;
  52
  53         /**
  54          * @var LoadBalancer
  55          */
  56         protected $loadBalancer;
  57
  58         /**
  59          * @var NamespaceInfo
  60          */
  61         protected $nsInfo;
  62
  63         /**
  64          * @var WatchedItemStore
  65          */
  66         protected $watchedItems;
  67
  68         /**
  69          * @var PermissionManager
  70          */
  71         protected $permMgr;
  72
  73         /**
  74          * Calling this directly is deprecated in 1.34. Use MovePageFactory instead.
  75          *
  76          * @param Title $oldTitle
  77          * @param Title $newTitle
  78          * @param ServiceOptions|null $options
  79          * @param LoadBalancer|null $loadBalancer
  80          * @param NamespaceInfo|null $nsInfo
  81          * @param WatchedItemStore|null $watchedItems
  82          * @param PermissionManager|null $permMgr
  83          */
  84         public function __construct(
  85                 Title $oldTitle,
  86                 Title $newTitle,
  87                 ServiceOptions $options = null,
  88                 LoadBalancer $loadBalancer = null,
  89                 NamespaceInfo $nsInfo = null,
  90                 WatchedItemStore $watchedItems = null,
  91                 PermissionManager $permMgr = null
  92         ) {
  93                 $this->oldTitle = $oldTitle;
  94                 $this->newTitle = $newTitle;
  95                 $this->options = $options ??
  96                         new ServiceOptions( MovePageFactory::$constructorOptions,
  97                                 MediaWikiServices::getInstance()->getMainConfig() );
  98                 $this->loadBalancer =
  99                         $loadBalancer ?? MediaWikiServices::getInstance()->getDBLoadBalancer();
 100                 $this->nsInfo = $nsInfo ?? MediaWikiServices::getInstance()->getNamespaceInfo();
 101                 $this->watchedItems =
 102                         $watchedItems ?? MediaWikiServices::getInstance()->getWatchedItemStore();
 103                 $this->permMgr = $permMgr ?? MediaWikiServices::getInstance()->getPermissionManager();
 104         }
 105
 106         /**
 107          * Check if the user is allowed to perform the move.
 108          *
 109          * @param User $user
 110          * @param string|null $reason To check against summary spam regex. Set to null to skip the check,
 111          *   for instance to display errors preemptively before the user has filled in a summary.
 112          * @return Status
 113          */
 114         public function checkPermissions( User $user, $reason ) {
 115                 $status = new Status();
 116
 117                 $errors = wfMergeErrorArrays(
 118                         $this->permMgr->getPermissionErrors( 'move', $user, $this->oldTitle ),
 119                         $this->permMgr->getPermissionErrors( 'edit', $user, $this->oldTitle ),
 120                         $this->permMgr->getPermissionErrors( 'move-target', $user, $this->newTitle ),
 121                         $this->permMgr->getPermissionErrors( 'edit', $user, $this->newTitle )
 122                 );
 123
 124                 // Convert into a Status object
 125                 if ( $errors ) {
 126                         foreach ( $errors as $error ) {
 127                                 $status->fatal( ...$error );
 128                         }
 129                 }
 130
 131                 if ( $reason !== null && EditPage::matchSummarySpamRegex( $reason ) !== false ) {
 132                         // This is kind of lame, won't display nice
 133                         $status->fatal( 'spamprotectiontext' );
 134                 }
 135
 136                 $tp = $this->newTitle->getTitleProtection();
 137                 if ( $tp !== false && !$user->isAllowed( $tp['permission'] ) ) {
 138                                 $status->fatal( 'cantmove-titleprotected' );
 139                 }
 140
 141                 Hooks::run( 'MovePageCheckPermissions',
 142                         [ $this->oldTitle, $this->newTitle, $user, $reason, $status ]
 143                 );
 144
 145                 return $status;
 146         }
 147
 148         /**
 149          * Does various sanity checks that the move is
 150          * valid. Only things based on the two titles
 151          * should be checked here.
 152          *
 153          * @return Status
 154          */
 155         public function isValidMove() {
 156                 $status = new Status();
 157
 158                 if ( $this->oldTitle->equals( $this->newTitle ) ) {
 159                         $status->fatal( 'selfmove' );
 160                 }
 161                 if ( !$this->oldTitle->isMovable() ) {
 162                         $status->fatal( 'immobile-source-namespace', $this->oldTitle->getNsText() );
 163                 }
 164                 if ( $this->newTitle->isExternal() ) {
 165                         $status->fatal( 'immobile-target-namespace-iw' );
 166                 }
 167                 if ( !$this->newTitle->isMovable() ) {
 168                         $status->fatal( 'immobile-target-namespace', $this->newTitle->getNsText() );
 169                 }
 170
 171                 $oldid = $this->oldTitle->getArticleID();
 172
 173                 if ( $this->newTitle->getDBkey() === '' ) {
 174                         $status->fatal( 'articleexists' );
 175                 }
 176                 if (
 177                         ( $this->oldTitle->getDBkey() == '' ) ||
 178                         ( !$oldid ) ||
 179                         ( $this->newTitle->getDBkey() == '' )
 180                 ) {
 181                         $status->fatal( 'badarticleerror' );
 182                 }
 183
 184                 # The move is allowed only if (1) the target doesn't exist, or
 185                 # (2) the target is a redirect to the source, and has no history
 186                 # (so we can undo bad moves right after they're done).
 187                 if ( $this->newTitle->getArticleID() && !$this->isValidMoveTarget() ) {
 188                         $status->fatal( 'articleexists' );
 189                 }
 190
 191                 // Content model checks
 192                 if ( !$this->options->get( 'ContentHandlerUseDB' ) &&
 193                         $this->oldTitle->getContentModel() !== $this->newTitle->getContentModel() ) {
 194                         // can't move a page if that would change the page's content model
 195                         $status->fatal(
 196                                 'bad-target-model',
 197                                 ContentHandler::getLocalizedName( $this->oldTitle->getContentModel() ),
 198                                 ContentHandler::getLocalizedName( $this->newTitle->getContentModel() )
 199                         );
 200                 } elseif (
 201                         !ContentHandler::getForTitle( $this->oldTitle )->canBeUsedOn( $this->newTitle )
 202                 ) {
 203                         $status->fatal(
 204                                 'content-not-allowed-here',
 205                                 ContentHandler::getLocalizedName( $this->oldTitle->getContentModel() ),
 206                                 $this->newTitle->getPrefixedText(),
 207                                 SlotRecord::MAIN
 208                         );
 209                 }
 210
 211                 // Image-specific checks
 212                 if ( $this->oldTitle->inNamespace( NS_FILE ) ) {
 213                         $status->merge( $this->isValidFileMove() );
 214                 }
 215
 216                 if ( $this->newTitle->inNamespace( NS_FILE ) && !$this->oldTitle->inNamespace( NS_FILE ) ) {
 217                         $status->fatal( 'nonfile-cannot-move-to-file' );
 218                 }
 219
 220                 // Hook for extensions to say a title can't be moved for technical reasons
 221                 Hooks::run( 'MovePageIsValidMove', [ $this->oldTitle, $this->newTitle, $status ] );
 222
 223                 return $status;
 224         }
 225
 226         /**
 227          * Sanity checks for when a file is being moved
 228          *
 229          * @return Status
 230          */
 231         protected function isValidFileMove() {
 232                 $status = new Status();
 233                 $file = wfLocalFile( $this->oldTitle );
 234                 $file->load( File::READ_LATEST );
 235                 if ( $file->exists() ) {
 236                         if ( $this->newTitle->getText() != wfStripIllegalFilenameChars( $this->newTitle->getText() ) ) {
 237                                 $status->fatal( 'imageinvalidfilename' );
 238                         }
 239                         if ( !File::checkExtensionCompatibility( $file, $this->newTitle->getDBkey() ) ) {
 240                                 $status->fatal( 'imagetypemismatch' );
 241                         }
 242                 }
 243
 244                 if ( !$this->newTitle->inNamespace( NS_FILE ) ) {
 245                         $status->fatal( 'imagenocrossnamespace' );
 246                 }
 247
 248                 return $status;
 249         }
 250
 251         /**
 252          * Checks if $this can be moved to a given Title
 253          * - Selects for update, so don't call it unless you mean business
 254          *
 255          * @since 1.25
 256          * @return bool
 257          */
 258         protected function isValidMoveTarget() {
 259                 # Is it an existing file?
 260                 if ( $this->newTitle->inNamespace( NS_FILE ) ) {
 261                         $file = wfLocalFile( $this->newTitle );
 262                         $file->load( File::READ_LATEST );
 263                         if ( $file->exists() ) {
 264                                 wfDebug( __METHOD__ . ": file exists\n" );
 265                                 return false;
 266                         }
 267                 }
 268                 # Is it a redirect with no history?
 269                 if ( !$this->newTitle->isSingleRevRedirect() ) {
 270                         wfDebug( __METHOD__ . ": not a one-rev redirect\n" );
 271                         return false;
 272                 }
 273                 # Get the article text
 274                 $rev = Revision::newFromTitle( $this->newTitle, false, Revision::READ_LATEST );
 275                 if ( !is_object( $rev ) ) {
 276                         return false;
 277                 }
 278                 $content = $rev->getContent();
 279                 # Does the redirect point to the source?
 280                 # Or is it a broken self-redirect, usually caused by namespace collisions?
 281                 $redirTitle = $content ? $content->getRedirectTarget() : null;
 282
 283                 if ( $redirTitle ) {
 284                         if ( $redirTitle->getPrefixedDBkey() !== $this->oldTitle->getPrefixedDBkey() &&
 285                                 $redirTitle->getPrefixedDBkey() !== $this->newTitle->getPrefixedDBkey() ) {
 286                                 wfDebug( __METHOD__ . ": redirect points to other page\n" );
 287                                 return false;
 288                         } else {
 289                                 return true;
 290                         }
 291                 } else {
 292                         # Fail safe (not a redirect after all. strange.)
 293                         wfDebug( __METHOD__ . ": failsafe: database says " . $this->newTitle->getPrefixedDBkey() .
 294                                 " is a redirect, but it doesn't contain a valid redirect.\n" );
 295                         return false;
 296                 }
 297         }
 298
 299         /**
 300          * Move a page without taking user permissions into account. Only checks if the move is itself
 301          * invalid, e.g., trying to move a special page or trying to move a page onto one that already
 302          * exists.
 303          *
 304          * @param User $user
 305          * @param string|null $reason
 306          * @param bool|null $createRedirect
 307          * @param string[] $changeTags Change tags to apply to the entry in the move log
 308          * @return Status
 309          */
 310         public function move(
 311                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 312         ) {
 313                 $status = $this->isValidMove();
 314                 if ( !$status->isOK() ) {
 315                         return $status;
 316                 }
 317
 318                 return $this->moveUnsafe( $user, $reason, $createRedirect, $changeTags );
 319         }
 320
 321         /**
 322          * Same as move(), but with permissions checks.
 323          *
 324          * @param User $user
 325          * @param string|null $reason
 326          * @param bool|null $createRedirect Ignored if user doesn't have suppressredirect permission
 327          * @param string[] $changeTags Change tags to apply to the entry in the move log
 328          * @return Status
 329          */
 330         public function moveIfAllowed(
 331                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 332         ) {
 333                 $status = $this->isValidMove();
 334                 $status->merge( $this->checkPermissions( $user, $reason ) );
 335                 if ( $changeTags ) {
 336                         $status->merge( ChangeTags::canAddTagsAccompanyingChange( $changeTags, $user ) );
 337                 }
 338
 339                 if ( !$status->isOK() ) {
 340                         // Auto-block user's IP if the account was "hard" blocked
 341                         $user->spreadAnyEditBlock();
 342                         return $status;
 343                 }
 344
 345                 // Check suppressredirect permission
 346                 if ( !$user->isAllowed( 'suppressredirect' ) ) {
 347                         $createRedirect = true;
 348                 }
 349
 350                 return $this->moveUnsafe( $user, $reason, $createRedirect, $changeTags );
 351         }
 352
 353         /**
 354          * Move the source page's subpages to be subpages of the target page, without checking user
 355          * permissions. The caller is responsible for moving the source page itself. We will still not
 356          * do moves that are inherently not allowed, nor will we move more than $wgMaximumMovedPages.
 357          *
 358          * @param User $user
 359          * @param string|null $reason The reason for the move
 360          * @param bool|null $createRedirect Whether to create redirects from the old subpages to
 361          *  the new ones
 362          * @param string[] $changeTags Applied to entries in the move log and redirect page revision
 363          * @return Status Good if no errors occurred. Ok if at least one page succeeded. The "value"
 364          *  of the top-level status is an array containing the per-title status for each page. For any
 365          *  move that succeeded, the "value" of the per-title status is the new page title.
 366          */
 367         public function moveSubpages(
 368                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 369         ) {
 370                 return $this->moveSubpagesInternal( false, $user, $reason, $createRedirect, $changeTags );
 371         }
 372
 373         /**
 374          * Move the source page's subpages to be subpages of the target page, with user permission
 375          * checks. The caller is responsible for moving the source page itself.
 376          *
 377          * @param User $user
 378          * @param string|null $reason The reason for the move
 379          * @param bool|null $createRedirect Whether to create redirects from the old subpages to
 380          *  the new ones. Ignored if the user doesn't have the 'suppressredirect' right.
 381          * @param string[] $changeTags Applied to entries in the move log and redirect page revision
 382          * @return Status Good if no errors occurred. Ok if at least one page succeeded. The "value"
 383          *  of the top-level status is an array containing the per-title status for each page. For any
 384          *  move that succeeded, the "value" of the per-title status is the new page title.
 385          */
 386         public function moveSubpagesIfAllowed(
 387                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 388         ) {
 389                 return $this->moveSubpagesInternal( true, $user, $reason, $createRedirect, $changeTags );
 390         }
 391
 392         /**
 393          * @param bool $checkPermissions
 394          * @param User $user
 395          * @param string $reason
 396          * @param bool $createRedirect
 397          * @param array $changeTags
 398          * @return Status
 399          */
 400         private function moveSubpagesInternal(
 401                 $checkPermissions, User $user, $reason, $createRedirect, array $changeTags
 402         ) {
 403                 global $wgMaximumMovedPages;
 404                 $services = MediaWikiServices::getInstance();
 405
 406                 if ( $checkPermissions ) {
 407                         if ( !$services->getPermissionManager()->userCan(
 408                                 'move-subpages', $user, $this->oldTitle )
 409                         ) {
 410                                 return Status::newFatal( 'cant-move-subpages' );
 411                         }
 412                 }
 413
 414                 $nsInfo = $services->getNamespaceInfo();
 415
 416                 // Do the source and target namespaces support subpages?
 417                 if ( !$nsInfo->hasSubpages( $this->oldTitle->getNamespace() ) ) {
 418                         return Status::newFatal( 'namespace-nosubpages',
 419                                 $nsInfo->getCanonicalName( $this->oldTitle->getNamespace() ) );
 420                 }
 421                 if ( !$nsInfo->hasSubpages( $this->newTitle->getNamespace() ) ) {
 422                         return Status::newFatal( 'namespace-nosubpages',
 423                                 $nsInfo->getCanonicalName( $this->newTitle->getNamespace() ) );
 424                 }
 425
 426                 // Return a status for the overall result. Its value will be an array with per-title
 427                 // status for each subpage. Merge any errors from the per-title statuses into the
 428                 // top-level status without resetting the overall result.
 429                 $topStatus = Status::newGood();
 430                 $perTitleStatus = [];
 431                 $subpages = $this->oldTitle->getSubpages( $wgMaximumMovedPages + 1 );
 432                 $count = 0;
 433                 foreach ( $subpages as $oldSubpage ) {
 434                         $count++;
 435                         if ( $count > $wgMaximumMovedPages ) {
 436                                 $status = Status::newFatal( 'movepage-max-pages', $wgMaximumMovedPages );
 437                                 $perTitleStatus[$oldSubpage->getPrefixedText()] = $status;
 438                                 $topStatus->merge( $status );
 439                                 $topStatus->setOk( true );
 440                                 break;
 441                         }
 442
 443                         // We don't know whether this function was called before or after moving the root page,
 444                         // so check both titles
 445                         if ( $oldSubpage->getArticleID() == $this->oldTitle->getArticleID() ||
 446                                 $oldSubpage->getArticleID() == $this->newTitle->getArticleID()
 447                         ) {
 448                                 // When moving a page to a subpage of itself, don't move it twice
 449                                 continue;
 450                         }
 451                         $newPageName = preg_replace(
 452                                         '#^' . preg_quote( $this->oldTitle->getDBkey(), '#' ) . '#',
 453                                         StringUtils::escapeRegexReplacement( $this->newTitle->getDBkey() ), # T23234
 454                                         $oldSubpage->getDBkey() );
 455                         if ( $oldSubpage->isTalkPage() ) {
 456                                 $newNs = $this->newTitle->getTalkPage()->getNamespace();
 457                         } else {
 458                                 $newNs = $this->newTitle->getSubjectPage()->getNamespace();
 459                         }
 460                         // T16385: we need makeTitleSafe because the new page names may be longer than 255
 461                         // characters.
 462                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 463
 464                         $mp = new MovePage( $oldSubpage, $newSubpage );
 465                         $method = $checkPermissions ? 'moveIfAllowed' : 'move';
 466                         $status = $mp->$method( $user, $reason, $createRedirect, $changeTags );
 467                         if ( $status->isOK() ) {
 468                                 $status->setResult( true, $newSubpage->getPrefixedText() );
 469                         }
 470                         $perTitleStatus[$oldSubpage->getPrefixedText()] = $status;
 471                         $topStatus->merge( $status );
 472                         $topStatus->setOk( true );
 473                 }
 474
 475                 $topStatus->value = $perTitleStatus;
 476                 return $topStatus;
 477         }
 478
 479         /**
 480          * Moves *without* any sort of safety or sanity checks. Hooks can still fail the move, however.
 481          *
 482          * @param User $user
 483          * @param string $reason
 484          * @param bool $createRedirect
 485          * @param string[] $changeTags Change tags to apply to the entry in the move log
 486          * @return Status
 487          */
 488         private function moveUnsafe( User $user, $reason, $createRedirect, array $changeTags ) {
 489                 $status = Status::newGood();
 490                 Hooks::run( 'TitleMove', [ $this->oldTitle, $this->newTitle, $user, $reason, &$status ] );
 491                 if ( !$status->isOK() ) {
 492                         // Move was aborted by the hook
 493                         return $status;
 494                 }
 495
 496                 $dbw = $this->loadBalancer->getConnection( DB_MASTER );
 497                 $dbw->startAtomic( __METHOD__, IDatabase::ATOMIC_CANCELABLE );
 498
 499                 Hooks::run( 'TitleMoveStarting', [ $this->oldTitle, $this->newTitle, $user ] );
 500
 501                 $pageid = $this->oldTitle->getArticleID( Title::GAID_FOR_UPDATE );
 502                 $protected = $this->oldTitle->isProtected();
 503
 504                 // Do the actual move; if this fails, it will throw an MWException(!)
 505                 $nullRevision = $this->moveToInternal( $user, $this->newTitle, $reason, $createRedirect,
 506                         $changeTags );
 507
 508                 // Refresh the sortkey for this row.  Be careful to avoid resetting
 509                 // cl_timestamp, which may disturb time-based lists on some sites.
 510                 // @todo This block should be killed, it's duplicating code
 511                 // from LinksUpdate::getCategoryInsertions() and friends.
 512                 $prefixes = $dbw->select(
 513                         'categorylinks',
 514                         [ 'cl_sortkey_prefix', 'cl_to' ],
 515                         [ 'cl_from' => $pageid ],
 516                         __METHOD__
 517                 );
 518                 $type = $this->nsInfo->getCategoryLinkType( $this->newTitle->getNamespace() );
 519                 foreach ( $prefixes as $prefixRow ) {
 520                         $prefix = $prefixRow->cl_sortkey_prefix;
 521                         $catTo = $prefixRow->cl_to;
 522                         $dbw->update( 'categorylinks',
 523                                 [
 524                                         'cl_sortkey' => Collation::singleton()->getSortKey(
 525                                                         $this->newTitle->getCategorySortkey( $prefix ) ),
 526                                         'cl_collation' => $this->options->get( 'CategoryCollation' ),
 527                                         'cl_type' => $type,
 528                                         'cl_timestamp=cl_timestamp' ],
 529                                 [
 530                                         'cl_from' => $pageid,
 531                                         'cl_to' => $catTo ],
 532                                 __METHOD__
 533                         );
 534                 }
 535
 536                 $redirid = $this->oldTitle->getArticleID();
 537
 538                 if ( $protected ) {
 539                         # Protect the redirect title as the title used to be...
 540                         $res = $dbw->select(
 541                                 'page_restrictions',
 542                                 [ 'pr_type', 'pr_level', 'pr_cascade', 'pr_user', 'pr_expiry' ],
 543                                 [ 'pr_page' => $pageid ],
 544                                 __METHOD__,
 545                                 'FOR UPDATE'
 546                         );
 547                         $rowsInsert = [];
 548                         foreach ( $res as $row ) {
 549                                 $rowsInsert[] = [
 550                                         'pr_page' => $redirid,
 551                                         'pr_type' => $row->pr_type,
 552                                         'pr_level' => $row->pr_level,
 553                                         'pr_cascade' => $row->pr_cascade,
 554                                         'pr_user' => $row->pr_user,
 555                                         'pr_expiry' => $row->pr_expiry
 556                                 ];
 557                         }
 558                         $dbw->insert( 'page_restrictions', $rowsInsert, __METHOD__, [ 'IGNORE' ] );
 559
 560                         // Build comment for log
 561                         $comment = wfMessage(
 562                                 'prot_1movedto2',
 563                                 $this->oldTitle->getPrefixedText(),
 564                                 $this->newTitle->getPrefixedText()
 565                         )->inContentLanguage()->text();
 566                         if ( $reason ) {
 567                                 $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 568                         }
 569
 570                         // reread inserted pr_ids for log relation
 571                         $insertedPrIds = $dbw->select(
 572                                 'page_restrictions',
 573                                 'pr_id',
 574                                 [ 'pr_page' => $redirid ],
 575                                 __METHOD__
 576                         );
 577                         $logRelationsValues = [];
 578                         foreach ( $insertedPrIds as $prid ) {
 579                                 $logRelationsValues[] = $prid->pr_id;
 580                         }
 581
 582                         // Update the protection log
 583                         $logEntry = new ManualLogEntry( 'protect', 'move_prot' );
 584                         $logEntry->setTarget( $this->newTitle );
 585                         $logEntry->setComment( $comment );
 586                         $logEntry->setPerformer( $user );
 587                         $logEntry->setParameters( [
 588                                 '4::oldtitle' => $this->oldTitle->getPrefixedText(),
 589                         ] );
 590                         $logEntry->setRelations( [ 'pr_id' => $logRelationsValues ] );
 591                         $logEntry->setTags( $changeTags );
 592                         $logId = $logEntry->insert();
 593                         $logEntry->publish( $logId );
 594                 }
 595
 596                 // Update *_from_namespace fields as needed
 597                 if ( $this->oldTitle->getNamespace() != $this->newTitle->getNamespace() ) {
 598                         $dbw->update( 'pagelinks',
 599                                 [ 'pl_from_namespace' => $this->newTitle->getNamespace() ],
 600                                 [ 'pl_from' => $pageid ],
 601                                 __METHOD__
 602                         );
 603                         $dbw->update( 'templatelinks',
 604                                 [ 'tl_from_namespace' => $this->newTitle->getNamespace() ],
 605                                 [ 'tl_from' => $pageid ],
 606                                 __METHOD__
 607                         );
 608                         $dbw->update( 'imagelinks',
 609                                 [ 'il_from_namespace' => $this->newTitle->getNamespace() ],
 610                                 [ 'il_from' => $pageid ],
 611                                 __METHOD__
 612                         );
 613                 }
 614
 615                 # Update watchlists
 616                 $oldtitle = $this->oldTitle->getDBkey();
 617                 $newtitle = $this->newTitle->getDBkey();
 618                 $oldsnamespace = $this->nsInfo->getSubject( $this->oldTitle->getNamespace() );
 619                 $newsnamespace = $this->nsInfo->getSubject( $this->newTitle->getNamespace() );
 620                 if ( $oldsnamespace != $newsnamespace || $oldtitle != $newtitle ) {
 621                         $this->watchedItems->duplicateAllAssociatedEntries( $this->oldTitle, $this->newTitle );
 622                 }
 623
 624                 // If it is a file then move it last.
 625                 // This is done after all database changes so that file system errors cancel the transaction.
 626                 if ( $this->oldTitle->getNamespace() == NS_FILE ) {
 627                         $status = $this->moveFile( $this->oldTitle, $this->newTitle );
 628                         if ( !$status->isOK() ) {
 629                                 $dbw->cancelAtomic( __METHOD__ );
 630                                 return $status;
 631                         }
 632                 }
 633
 634                 Hooks::run(
 635                         'TitleMoveCompleting',
 636                         [ $this->oldTitle, $this->newTitle,
 637                                 $user, $pageid, $redirid, $reason, $nullRevision ]
 638                 );
 639
 640                 $dbw->endAtomic( __METHOD__ );
 641
 642                 $params = [
 643                         &$this->oldTitle,
 644                         &$this->newTitle,
 645                         &$user,
 646                         $pageid,
 647                         $redirid,
 648                         $reason,
 649                         $nullRevision
 650                 ];
 651                 // Keep each single hook handler atomic
 652                 DeferredUpdates::addUpdate(
 653                         new AtomicSectionUpdate(
 654                                 $dbw,
 655                                 __METHOD__,
 656                                 // Hold onto $user to avoid HHVM bug where it no longer
 657                                 // becomes a reference (T118683)
 658                                 function () use ( $params, &$user ) {
 659                                         Hooks::run( 'TitleMoveComplete', $params );
 660                                 }
 661                         )
 662                 );
 663
 664                 return Status::newGood();
 665         }
 666
 667         /**
 668          * Move a file associated with a page to a new location.
 669          * Can also be used to revert after a DB failure.
 670          *
 671          * @private
 672          * @param Title $oldTitle Old location to move the file from.
 673          * @param Title $newTitle New location to move the file to.
 674          * @return Status
 675          */
 676         private function moveFile( $oldTitle, $newTitle ) {
 677                 $status = Status::newFatal(
 678                         'cannotdelete',
 679                         $oldTitle->getPrefixedText()
 680                 );
 681
 682                 $file = wfLocalFile( $oldTitle );
 683                 $file->load( File::READ_LATEST );
 684                 if ( $file->exists() ) {
 685                         $status = $file->move( $newTitle );
 686                 }
 687
 688                 // Clear RepoGroup process cache
 689                 RepoGroup::singleton()->clearCache( $oldTitle );
 690                 RepoGroup::singleton()->clearCache( $newTitle ); # clear false negative cache
 691                 return $status;
 692         }
 693
 694         /**
 695          * Move page to a title which is either a redirect to the
 696          * source page or nonexistent
 697          *
 698          * @todo This was basically directly moved from Title, it should be split into
 699          *   smaller functions
 700          * @param User $user the User doing the move
 701          * @param Title $nt The page to move to, which should be a redirect or non-existent
 702          * @param string $reason The reason for the move
 703          * @param bool $createRedirect Whether to leave a redirect at the old title. Does not check
 704          *   if the user has the suppressredirect right
 705          * @param string[] $changeTags Change tags to apply to the entry in the move log
 706          * @return Revision the revision created by the move
 707          * @throws MWException
 708          */
 709         private function moveToInternal( User $user, &$nt, $reason = '', $createRedirect = true,
 710                 array $changeTags = []
 711         ) {
 712                 if ( $nt->exists() ) {
 713                         $moveOverRedirect = true;
 714                         $logType = 'move_redir';
 715                 } else {
 716                         $moveOverRedirect = false;
 717                         $logType = 'move';
 718                 }
 719
 720                 if ( $moveOverRedirect ) {
 721                         $overwriteMessage = wfMessage(
 722                                         'delete_and_move_reason',
 723                                         $this->oldTitle->getPrefixedText()
 724                                 )->inContentLanguage()->text();
 725                         $newpage = WikiPage::factory( $nt );
 726                         $errs = [];
 727                         $status = $newpage->doDeleteArticleReal(
 728                                 $overwriteMessage,
 729                                 /* $suppress */ false,
 730                                 $nt->getArticleID(),
 731                                 /* $commit */ false,
 732                                 $errs,
 733                                 $user,
 734                                 $changeTags,
 735                                 'delete_redir'
 736                         );
 737
 738                         if ( !$status->isGood() ) {
 739                                 throw new MWException( 'Failed to delete page-move revision: '
 740                                         . $status->getWikiText( false, false, 'en' ) );
 741                         }
 742
 743                         $nt->resetArticleID( false );
 744                 }
 745
 746                 if ( $createRedirect ) {
 747                         if ( $this->oldTitle->getNamespace() == NS_CATEGORY
 748                                 && !wfMessage( 'category-move-redirect-override' )->inContentLanguage()->isDisabled()
 749                         ) {
 750                                 $redirectContent = new WikitextContent(
 751                                         wfMessage( 'category-move-redirect-override' )
 752                                                 ->params( $nt->getPrefixedText() )->inContentLanguage()->plain() );
 753                         } else {
 754                                 $contentHandler = ContentHandler::getForTitle( $this->oldTitle );
 755                                 $redirectContent = $contentHandler->makeRedirectContent( $nt,
 756                                         wfMessage( 'move-redirect-text' )->inContentLanguage()->plain() );
 757                         }
 758
 759                         // NOTE: If this page's content model does not support redirects, $redirectContent will be null.
 760                 } else {
 761                         $redirectContent = null;
 762                 }
 763
 764                 // Figure out whether the content model is no longer the default
 765                 $oldDefault = ContentHandler::getDefaultModelFor( $this->oldTitle );
 766                 $contentModel = $this->oldTitle->getContentModel();
 767                 $newDefault = ContentHandler::getDefaultModelFor( $nt );
 768                 $defaultContentModelChanging = ( $oldDefault !== $newDefault
 769                         && $oldDefault === $contentModel );
 770
 771                 // T59084: log_page should be the ID of the *moved* page
 772                 $oldid = $this->oldTitle->getArticleID();
 773                 $logTitle = clone $this->oldTitle;
 774
 775                 $logEntry = new ManualLogEntry( 'move', $logType );
 776                 $logEntry->setPerformer( $user );
 777                 $logEntry->setTarget( $logTitle );
 778                 $logEntry->setComment( $reason );
 779                 $logEntry->setParameters( [
 780                         '4::target' => $nt->getPrefixedText(),
 781                         '5::noredir' => $redirectContent ? '0' : '1',
 782                 ] );
 783
 784                 $formatter = LogFormatter::newFromEntry( $logEntry );
 785                 $formatter->setContext( RequestContext::newExtraneousContext( $this->oldTitle ) );
 786                 $comment = $formatter->getPlainActionText();
 787                 if ( $reason ) {
 788                         $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 789                 }
 790
 791                 $dbw = $this->loadBalancer->getConnection( DB_MASTER );
 792
 793                 $oldpage = WikiPage::factory( $this->oldTitle );
 794                 $oldcountable = $oldpage->isCountable();
 795
 796                 $newpage = WikiPage::factory( $nt );
 797
 798                 # Change the name of the target page:
 799                 $dbw->update( 'page',
 800                         /* SET */ [
 801                                 'page_namespace' => $nt->getNamespace(),
 802                                 'page_title' => $nt->getDBkey(),
 803                         ],
 804                         /* WHERE */ [ 'page_id' => $oldid ],
 805                         __METHOD__
 806                 );
 807
 808                 # Save a null revision in the page's history notifying of the move
 809                 $nullRevision = Revision::newNullRevision( $dbw, $oldid, $comment, true, $user );
 810                 if ( !is_object( $nullRevision ) ) {
 811                         throw new MWException( 'Failed to create null revision while moving page ID '
 812                                 . $oldid . ' to ' . $nt->getPrefixedDBkey() );
 813                 }
 814
 815                 $nullRevId = $nullRevision->insertOn( $dbw );
 816                 $logEntry->setAssociatedRevId( $nullRevId );
 817
 818                 /**
 819                  * T163966
 820                  * Increment user_editcount during page moves
 821                  * Moved from SpecialMovepage.php per T195550
 822                  */
 823                 $user->incEditCount();
 824
 825                 if ( !$redirectContent ) {
 826                         // Clean up the old title *before* reset article id - T47348
 827                         WikiPage::onArticleDelete( $this->oldTitle );
 828                 }
 829
 830                 $this->oldTitle->resetArticleID( 0 ); // 0 == non existing
 831                 $nt->resetArticleID( $oldid );
 832                 $newpage->loadPageData( WikiPage::READ_LOCKING ); // T48397
 833
 834                 $newpage->updateRevisionOn( $dbw, $nullRevision );
 835
 836                 Hooks::run( 'NewRevisionFromEditComplete',
 837                         [ $newpage, $nullRevision, $nullRevision->getParentId(), $user ] );
 838
 839                 $newpage->doEditUpdates( $nullRevision, $user,
 840                         [ 'changed' => false, 'moved' => true, 'oldcountable' => $oldcountable ] );
 841
 842                 // If the default content model changes, we need to populate rev_content_model
 843                 if ( $defaultContentModelChanging ) {
 844                         $dbw->update(
 845                                 'revision',
 846                                 [ 'rev_content_model' => $contentModel ],
 847                                 [ 'rev_page' => $nt->getArticleID(), 'rev_content_model IS NULL' ],
 848                                 __METHOD__
 849                         );
 850                 }
 851
 852                 WikiPage::onArticleCreate( $nt );
 853
 854                 # Recreate the redirect, this time in the other direction.
 855                 if ( $redirectContent ) {
 856                         $redirectArticle = WikiPage::factory( $this->oldTitle );
 857                         $redirectArticle->loadFromRow( false, WikiPage::READ_LOCKING ); // T48397
 858                         $newid = $redirectArticle->insertOn( $dbw );
 859                         if ( $newid ) { // sanity
 860                                 $this->oldTitle->resetArticleID( $newid );
 861                                 $redirectRevision = new Revision( [
 862                                         'title' => $this->oldTitle, // for determining the default content model
 863                                         'page' => $newid,
 864                                         'user_text' => $user->getName(),
 865                                         'user' => $user->getId(),
 866                                         'comment' => $comment,
 867                                         'content' => $redirectContent ] );
 868                                 $redirectRevId = $redirectRevision->insertOn( $dbw );
 869                                 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
 870
 871                                 Hooks::run( 'NewRevisionFromEditComplete',
 872                                         [ $redirectArticle, $redirectRevision, false, $user ] );
 873
 874                                 $redirectArticle->doEditUpdates( $redirectRevision, $user, [ 'created' => true ] );
 875
 876                                 // make a copy because of log entry below
 877                                 $redirectTags = $changeTags;
 878                                 if ( in_array( 'mw-new-redirect', ChangeTags::getSoftwareTags() ) ) {
 879                                         $redirectTags[] = 'mw-new-redirect';
 880                                 }
 881                                 ChangeTags::addTags( $redirectTags, null, $redirectRevId, null );
 882                         }
 883                 }
 884
 885                 # Log the move
 886                 $logid = $logEntry->insert();
 887
 888                 $logEntry->setTags( $changeTags );
 889                 $logEntry->publish( $logid );
 890
 891                 return $nullRevision;
 892         }
 893 }