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          * @var RepoGroup
  75          */
  76         protected $repoGroup;
  77
  78         /**
  79          * Calling this directly is deprecated in 1.34. Use MovePageFactory instead.
  80          *
  81          * @param Title $oldTitle
  82          * @param Title $newTitle
  83          * @param ServiceOptions|null $options
  84          * @param LoadBalancer|null $loadBalancer
  85          * @param NamespaceInfo|null $nsInfo
  86          * @param WatchedItemStore|null $watchedItems
  87          * @param PermissionManager|null $permMgr
  88          */
  89         public function __construct(
  90                 Title $oldTitle,
  91                 Title $newTitle,
  92                 ServiceOptions $options = null,
  93                 LoadBalancer $loadBalancer = null,
  94                 NamespaceInfo $nsInfo = null,
  95                 WatchedItemStore $watchedItems = null,
  96                 PermissionManager $permMgr = null,
  97                 RepoGroup $repoGroup = null
  98         ) {
  99                 $this->oldTitle = $oldTitle;
 100                 $this->newTitle = $newTitle;
 101                 $this->options = $options ??
 102                         new ServiceOptions( MovePageFactory::$constructorOptions,
 103                                 MediaWikiServices::getInstance()->getMainConfig() );
 104                 $this->loadBalancer =
 105                         $loadBalancer ?? MediaWikiServices::getInstance()->getDBLoadBalancer();
 106                 $this->nsInfo = $nsInfo ?? MediaWikiServices::getInstance()->getNamespaceInfo();
 107                 $this->watchedItems =
 108                         $watchedItems ?? MediaWikiServices::getInstance()->getWatchedItemStore();
 109                 $this->permMgr = $permMgr ?? MediaWikiServices::getInstance()->getPermissionManager();
 110                 $this->repoGroup = $repoGroup ?? MediaWikiServices::getInstance()->getRepoGroup();
 111         }
 112
 113         /**
 114          * Check if the user is allowed to perform the move.
 115          *
 116          * @param User $user
 117          * @param string|null $reason To check against summary spam regex. Set to null to skip the check,
 118          *   for instance to display errors preemptively before the user has filled in a summary.
 119          * @return Status
 120          */
 121         public function checkPermissions( User $user, $reason ) {
 122                 $status = new Status();
 123
 124                 $errors = wfMergeErrorArrays(
 125                         $this->permMgr->getPermissionErrors( 'move', $user, $this->oldTitle ),
 126                         $this->permMgr->getPermissionErrors( 'edit', $user, $this->oldTitle ),
 127                         $this->permMgr->getPermissionErrors( 'move-target', $user, $this->newTitle ),
 128                         $this->permMgr->getPermissionErrors( 'edit', $user, $this->newTitle )
 129                 );
 130
 131                 // Convert into a Status object
 132                 if ( $errors ) {
 133                         foreach ( $errors as $error ) {
 134                                 $status->fatal( ...$error );
 135                         }
 136                 }
 137
 138                 if ( $reason !== null && EditPage::matchSummarySpamRegex( $reason ) !== false ) {
 139                         // This is kind of lame, won't display nice
 140                         $status->fatal( 'spamprotectiontext' );
 141                 }
 142
 143                 $tp = $this->newTitle->getTitleProtection();
 144                 if ( $tp !== false && !$user->isAllowed( $tp['permission'] ) ) {
 145                                 $status->fatal( 'cantmove-titleprotected' );
 146                 }
 147
 148                 Hooks::run( 'MovePageCheckPermissions',
 149                         [ $this->oldTitle, $this->newTitle, $user, $reason, $status ]
 150                 );
 151
 152                 return $status;
 153         }
 154
 155         /**
 156          * Does various sanity checks that the move is
 157          * valid. Only things based on the two titles
 158          * should be checked here.
 159          *
 160          * @return Status
 161          */
 162         public function isValidMove() {
 163                 $status = new Status();
 164
 165                 if ( $this->oldTitle->equals( $this->newTitle ) ) {
 166                         $status->fatal( 'selfmove' );
 167                 }
 168                 if ( !$this->oldTitle->isMovable() ) {
 169                         $status->fatal( 'immobile-source-namespace', $this->oldTitle->getNsText() );
 170                 }
 171                 if ( $this->newTitle->isExternal() ) {
 172                         $status->fatal( 'immobile-target-namespace-iw' );
 173                 }
 174                 if ( !$this->newTitle->isMovable() ) {
 175                         $status->fatal( 'immobile-target-namespace', $this->newTitle->getNsText() );
 176                 }
 177
 178                 $oldid = $this->oldTitle->getArticleID();
 179
 180                 if ( $this->newTitle->getDBkey() === '' ) {
 181                         $status->fatal( 'articleexists' );
 182                 }
 183                 if (
 184                         ( $this->oldTitle->getDBkey() == '' ) ||
 185                         ( !$oldid ) ||
 186                         ( $this->newTitle->getDBkey() == '' )
 187                 ) {
 188                         $status->fatal( 'badarticleerror' );
 189                 }
 190
 191                 # The move is allowed only if (1) the target doesn't exist, or
 192                 # (2) the target is a redirect to the source, and has no history
 193                 # (so we can undo bad moves right after they're done).
 194                 if ( $this->newTitle->getArticleID() && !$this->isValidMoveTarget() ) {
 195                         $status->fatal( 'articleexists' );
 196                 }
 197
 198                 // Content model checks
 199                 if ( !$this->options->get( 'ContentHandlerUseDB' ) &&
 200                         $this->oldTitle->getContentModel() !== $this->newTitle->getContentModel() ) {
 201                         // can't move a page if that would change the page's content model
 202                         $status->fatal(
 203                                 'bad-target-model',
 204                                 ContentHandler::getLocalizedName( $this->oldTitle->getContentModel() ),
 205                                 ContentHandler::getLocalizedName( $this->newTitle->getContentModel() )
 206                         );
 207                 } elseif (
 208                         !ContentHandler::getForTitle( $this->oldTitle )->canBeUsedOn( $this->newTitle )
 209                 ) {
 210                         $status->fatal(
 211                                 'content-not-allowed-here',
 212                                 ContentHandler::getLocalizedName( $this->oldTitle->getContentModel() ),
 213                                 $this->newTitle->getPrefixedText(),
 214                                 SlotRecord::MAIN
 215                         );
 216                 }
 217
 218                 // Image-specific checks
 219                 if ( $this->oldTitle->inNamespace( NS_FILE ) ) {
 220                         $status->merge( $this->isValidFileMove() );
 221                 }
 222
 223                 if ( $this->newTitle->inNamespace( NS_FILE ) && !$this->oldTitle->inNamespace( NS_FILE ) ) {
 224                         $status->fatal( 'nonfile-cannot-move-to-file' );
 225                 }
 226
 227                 // Hook for extensions to say a title can't be moved for technical reasons
 228                 Hooks::run( 'MovePageIsValidMove', [ $this->oldTitle, $this->newTitle, $status ] );
 229
 230                 return $status;
 231         }
 232
 233         /**
 234          * Sanity checks for when a file is being moved
 235          *
 236          * @return Status
 237          */
 238         protected function isValidFileMove() {
 239                 $status = new Status();
 240                 $file = $this->repoGroup->getLocalRepo()->newFile( $this->oldTitle );
 241                 $file->load( File::READ_LATEST );
 242                 if ( $file->exists() ) {
 243                         if ( $this->newTitle->getText() != wfStripIllegalFilenameChars( $this->newTitle->getText() ) ) {
 244                                 $status->fatal( 'imageinvalidfilename' );
 245                         }
 246                         if ( !File::checkExtensionCompatibility( $file, $this->newTitle->getDBkey() ) ) {
 247                                 $status->fatal( 'imagetypemismatch' );
 248                         }
 249                 }
 250
 251                 if ( !$this->newTitle->inNamespace( NS_FILE ) ) {
 252                         $status->fatal( 'imagenocrossnamespace' );
 253                 }
 254
 255                 return $status;
 256         }
 257
 258         /**
 259          * Checks if $this can be moved to a given Title
 260          * - Selects for update, so don't call it unless you mean business
 261          *
 262          * @since 1.25
 263          * @return bool
 264          */
 265         protected function isValidMoveTarget() {
 266                 # Is it an existing file?
 267                 if ( $this->newTitle->inNamespace( NS_FILE ) ) {
 268                         $file = $this->repoGroup->getLocalRepo()->newFile( $this->newTitle );
 269                         $file->load( File::READ_LATEST );
 270                         if ( $file->exists() ) {
 271                                 wfDebug( __METHOD__ . ": file exists\n" );
 272                                 return false;
 273                         }
 274                 }
 275                 # Is it a redirect with no history?
 276                 if ( !$this->newTitle->isSingleRevRedirect() ) {
 277                         wfDebug( __METHOD__ . ": not a one-rev redirect\n" );
 278                         return false;
 279                 }
 280                 # Get the article text
 281                 $rev = Revision::newFromTitle( $this->newTitle, false, Revision::READ_LATEST );
 282                 if ( !is_object( $rev ) ) {
 283                         return false;
 284                 }
 285                 $content = $rev->getContent();
 286                 # Does the redirect point to the source?
 287                 # Or is it a broken self-redirect, usually caused by namespace collisions?
 288                 $redirTitle = $content ? $content->getRedirectTarget() : null;
 289
 290                 if ( $redirTitle ) {
 291                         if ( $redirTitle->getPrefixedDBkey() !== $this->oldTitle->getPrefixedDBkey() &&
 292                                 $redirTitle->getPrefixedDBkey() !== $this->newTitle->getPrefixedDBkey() ) {
 293                                 wfDebug( __METHOD__ . ": redirect points to other page\n" );
 294                                 return false;
 295                         } else {
 296                                 return true;
 297                         }
 298                 } else {
 299                         # Fail safe (not a redirect after all. strange.)
 300                         wfDebug( __METHOD__ . ": failsafe: database says " . $this->newTitle->getPrefixedDBkey() .
 301                                 " is a redirect, but it doesn't contain a valid redirect.\n" );
 302                         return false;
 303                 }
 304         }
 305
 306         /**
 307          * Move a page without taking user permissions into account. Only checks if the move is itself
 308          * invalid, e.g., trying to move a special page or trying to move a page onto one that already
 309          * exists.
 310          *
 311          * @param User $user
 312          * @param string|null $reason
 313          * @param bool|null $createRedirect
 314          * @param string[] $changeTags Change tags to apply to the entry in the move log
 315          * @return Status
 316          */
 317         public function move(
 318                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 319         ) {
 320                 $status = $this->isValidMove();
 321                 if ( !$status->isOK() ) {
 322                         return $status;
 323                 }
 324
 325                 return $this->moveUnsafe( $user, $reason, $createRedirect, $changeTags );
 326         }
 327
 328         /**
 329          * Same as move(), but with permissions checks.
 330          *
 331          * @param User $user
 332          * @param string|null $reason
 333          * @param bool|null $createRedirect Ignored if user doesn't have suppressredirect permission
 334          * @param string[] $changeTags Change tags to apply to the entry in the move log
 335          * @return Status
 336          */
 337         public function moveIfAllowed(
 338                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 339         ) {
 340                 $status = $this->isValidMove();
 341                 $status->merge( $this->checkPermissions( $user, $reason ) );
 342                 if ( $changeTags ) {
 343                         $status->merge( ChangeTags::canAddTagsAccompanyingChange( $changeTags, $user ) );
 344                 }
 345
 346                 if ( !$status->isOK() ) {
 347                         // Auto-block user's IP if the account was "hard" blocked
 348                         $user->spreadAnyEditBlock();
 349                         return $status;
 350                 }
 351
 352                 // Check suppressredirect permission
 353                 if ( !$user->isAllowed( 'suppressredirect' ) ) {
 354                         $createRedirect = true;
 355                 }
 356
 357                 return $this->moveUnsafe( $user, $reason, $createRedirect, $changeTags );
 358         }
 359
 360         /**
 361          * Move the source page's subpages to be subpages of the target page, without checking user
 362          * permissions. The caller is responsible for moving the source page itself. We will still not
 363          * do moves that are inherently not allowed, nor will we move more than $wgMaximumMovedPages.
 364          *
 365          * @param User $user
 366          * @param string|null $reason The reason for the move
 367          * @param bool|null $createRedirect Whether to create redirects from the old subpages to
 368          *  the new ones
 369          * @param string[] $changeTags Applied to entries in the move log and redirect page revision
 370          * @return Status Good if no errors occurred. Ok if at least one page succeeded. The "value"
 371          *  of the top-level status is an array containing the per-title status for each page. For any
 372          *  move that succeeded, the "value" of the per-title status is the new page title.
 373          */
 374         public function moveSubpages(
 375                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 376         ) {
 377                 return $this->moveSubpagesInternal( false, $user, $reason, $createRedirect, $changeTags );
 378         }
 379
 380         /**
 381          * Move the source page's subpages to be subpages of the target page, with user permission
 382          * checks. The caller is responsible for moving the source page itself.
 383          *
 384          * @param User $user
 385          * @param string|null $reason The reason for the move
 386          * @param bool|null $createRedirect Whether to create redirects from the old subpages to
 387          *  the new ones. Ignored if the user doesn't have the 'suppressredirect' right.
 388          * @param string[] $changeTags Applied to entries in the move log and redirect page revision
 389          * @return Status Good if no errors occurred. Ok if at least one page succeeded. The "value"
 390          *  of the top-level status is an array containing the per-title status for each page. For any
 391          *  move that succeeded, the "value" of the per-title status is the new page title.
 392          */
 393         public function moveSubpagesIfAllowed(
 394                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 395         ) {
 396                 return $this->moveSubpagesInternal( true, $user, $reason, $createRedirect, $changeTags );
 397         }
 398
 399         /**
 400          * @param bool $checkPermissions
 401          * @param User $user
 402          * @param string $reason
 403          * @param bool $createRedirect
 404          * @param array $changeTags
 405          * @return Status
 406          */
 407         private function moveSubpagesInternal(
 408                 $checkPermissions, User $user, $reason, $createRedirect, array $changeTags
 409         ) {
 410                 global $wgMaximumMovedPages;
 411                 $services = MediaWikiServices::getInstance();
 412
 413                 if ( $checkPermissions ) {
 414                         if ( !$services->getPermissionManager()->userCan(
 415                                 'move-subpages', $user, $this->oldTitle )
 416                         ) {
 417                                 return Status::newFatal( 'cant-move-subpages' );
 418                         }
 419                 }
 420
 421                 $nsInfo = $services->getNamespaceInfo();
 422
 423                 // Do the source and target namespaces support subpages?
 424                 if ( !$nsInfo->hasSubpages( $this->oldTitle->getNamespace() ) ) {
 425                         return Status::newFatal( 'namespace-nosubpages',
 426                                 $nsInfo->getCanonicalName( $this->oldTitle->getNamespace() ) );
 427                 }
 428                 if ( !$nsInfo->hasSubpages( $this->newTitle->getNamespace() ) ) {
 429                         return Status::newFatal( 'namespace-nosubpages',
 430                                 $nsInfo->getCanonicalName( $this->newTitle->getNamespace() ) );
 431                 }
 432
 433                 // Return a status for the overall result. Its value will be an array with per-title
 434                 // status for each subpage. Merge any errors from the per-title statuses into the
 435                 // top-level status without resetting the overall result.
 436                 $topStatus = Status::newGood();
 437                 $perTitleStatus = [];
 438                 $subpages = $this->oldTitle->getSubpages( $wgMaximumMovedPages + 1 );
 439                 $count = 0;
 440                 foreach ( $subpages as $oldSubpage ) {
 441                         $count++;
 442                         if ( $count > $wgMaximumMovedPages ) {
 443                                 $status = Status::newFatal( 'movepage-max-pages', $wgMaximumMovedPages );
 444                                 $perTitleStatus[$oldSubpage->getPrefixedText()] = $status;
 445                                 $topStatus->merge( $status );
 446                                 $topStatus->setOk( true );
 447                                 break;
 448                         }
 449
 450                         // We don't know whether this function was called before or after moving the root page,
 451                         // so check both titles
 452                         if ( $oldSubpage->getArticleID() == $this->oldTitle->getArticleID() ||
 453                                 $oldSubpage->getArticleID() == $this->newTitle->getArticleID()
 454                         ) {
 455                                 // When moving a page to a subpage of itself, don't move it twice
 456                                 continue;
 457                         }
 458                         $newPageName = preg_replace(
 459                                         '#^' . preg_quote( $this->oldTitle->getDBkey(), '#' ) . '#',
 460                                         StringUtils::escapeRegexReplacement( $this->newTitle->getDBkey() ), # T23234
 461                                         $oldSubpage->getDBkey() );
 462                         if ( $oldSubpage->isTalkPage() ) {
 463                                 $newNs = $this->newTitle->getTalkPage()->getNamespace();
 464                         } else {
 465                                 $newNs = $this->newTitle->getSubjectPage()->getNamespace();
 466                         }
 467                         // T16385: we need makeTitleSafe because the new page names may be longer than 255
 468                         // characters.
 469                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 470
 471                         $mp = new MovePage( $oldSubpage, $newSubpage );
 472                         $method = $checkPermissions ? 'moveIfAllowed' : 'move';
 473                         $status = $mp->$method( $user, $reason, $createRedirect, $changeTags );
 474                         if ( $status->isOK() ) {
 475                                 $status->setResult( true, $newSubpage->getPrefixedText() );
 476                         }
 477                         $perTitleStatus[$oldSubpage->getPrefixedText()] = $status;
 478                         $topStatus->merge( $status );
 479                         $topStatus->setOk( true );
 480                 }
 481
 482                 $topStatus->value = $perTitleStatus;
 483                 return $topStatus;
 484         }
 485
 486         /**
 487          * Moves *without* any sort of safety or sanity checks. Hooks can still fail the move, however.
 488          *
 489          * @param User $user
 490          * @param string $reason
 491          * @param bool $createRedirect
 492          * @param string[] $changeTags Change tags to apply to the entry in the move log
 493          * @return Status
 494          */
 495         private function moveUnsafe( User $user, $reason, $createRedirect, array $changeTags ) {
 496                 $status = Status::newGood();
 497                 Hooks::run( 'TitleMove', [ $this->oldTitle, $this->newTitle, $user, $reason, &$status ] );
 498                 if ( !$status->isOK() ) {
 499                         // Move was aborted by the hook
 500                         return $status;
 501                 }
 502
 503                 $dbw = $this->loadBalancer->getConnection( DB_MASTER );
 504                 $dbw->startAtomic( __METHOD__, IDatabase::ATOMIC_CANCELABLE );
 505
 506                 Hooks::run( 'TitleMoveStarting', [ $this->oldTitle, $this->newTitle, $user ] );
 507
 508                 $pageid = $this->oldTitle->getArticleID( Title::GAID_FOR_UPDATE );
 509                 $protected = $this->oldTitle->isProtected();
 510
 511                 // Do the actual move; if this fails, it will throw an MWException(!)
 512                 $nullRevision = $this->moveToInternal( $user, $this->newTitle, $reason, $createRedirect,
 513                         $changeTags );
 514
 515                 // Refresh the sortkey for this row.  Be careful to avoid resetting
 516                 // cl_timestamp, which may disturb time-based lists on some sites.
 517                 // @todo This block should be killed, it's duplicating code
 518                 // from LinksUpdate::getCategoryInsertions() and friends.
 519                 $prefixes = $dbw->select(
 520                         'categorylinks',
 521                         [ 'cl_sortkey_prefix', 'cl_to' ],
 522                         [ 'cl_from' => $pageid ],
 523                         __METHOD__
 524                 );
 525                 $type = $this->nsInfo->getCategoryLinkType( $this->newTitle->getNamespace() );
 526                 foreach ( $prefixes as $prefixRow ) {
 527                         $prefix = $prefixRow->cl_sortkey_prefix;
 528                         $catTo = $prefixRow->cl_to;
 529                         $dbw->update( 'categorylinks',
 530                                 [
 531                                         'cl_sortkey' => Collation::singleton()->getSortKey(
 532                                                         $this->newTitle->getCategorySortkey( $prefix ) ),
 533                                         'cl_collation' => $this->options->get( 'CategoryCollation' ),
 534                                         'cl_type' => $type,
 535                                         'cl_timestamp=cl_timestamp' ],
 536                                 [
 537                                         'cl_from' => $pageid,
 538                                         'cl_to' => $catTo ],
 539                                 __METHOD__
 540                         );
 541                 }
 542
 543                 $redirid = $this->oldTitle->getArticleID();
 544
 545                 if ( $protected ) {
 546                         # Protect the redirect title as the title used to be...
 547                         $res = $dbw->select(
 548                                 'page_restrictions',
 549                                 [ 'pr_type', 'pr_level', 'pr_cascade', 'pr_user', 'pr_expiry' ],
 550                                 [ 'pr_page' => $pageid ],
 551                                 __METHOD__,
 552                                 'FOR UPDATE'
 553                         );
 554                         $rowsInsert = [];
 555                         foreach ( $res as $row ) {
 556                                 $rowsInsert[] = [
 557                                         'pr_page' => $redirid,
 558                                         'pr_type' => $row->pr_type,
 559                                         'pr_level' => $row->pr_level,
 560                                         'pr_cascade' => $row->pr_cascade,
 561                                         'pr_user' => $row->pr_user,
 562                                         'pr_expiry' => $row->pr_expiry
 563                                 ];
 564                         }
 565                         $dbw->insert( 'page_restrictions', $rowsInsert, __METHOD__, [ 'IGNORE' ] );
 566
 567                         // Build comment for log
 568                         $comment = wfMessage(
 569                                 'prot_1movedto2',
 570                                 $this->oldTitle->getPrefixedText(),
 571                                 $this->newTitle->getPrefixedText()
 572                         )->inContentLanguage()->text();
 573                         if ( $reason ) {
 574                                 $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 575                         }
 576
 577                         // reread inserted pr_ids for log relation
 578                         $insertedPrIds = $dbw->select(
 579                                 'page_restrictions',
 580                                 'pr_id',
 581                                 [ 'pr_page' => $redirid ],
 582                                 __METHOD__
 583                         );
 584                         $logRelationsValues = [];
 585                         foreach ( $insertedPrIds as $prid ) {
 586                                 $logRelationsValues[] = $prid->pr_id;
 587                         }
 588
 589                         // Update the protection log
 590                         $logEntry = new ManualLogEntry( 'protect', 'move_prot' );
 591                         $logEntry->setTarget( $this->newTitle );
 592                         $logEntry->setComment( $comment );
 593                         $logEntry->setPerformer( $user );
 594                         $logEntry->setParameters( [
 595                                 '4::oldtitle' => $this->oldTitle->getPrefixedText(),
 596                         ] );
 597                         $logEntry->setRelations( [ 'pr_id' => $logRelationsValues ] );
 598                         $logEntry->setTags( $changeTags );
 599                         $logId = $logEntry->insert();
 600                         $logEntry->publish( $logId );
 601                 }
 602
 603                 // Update *_from_namespace fields as needed
 604                 if ( $this->oldTitle->getNamespace() != $this->newTitle->getNamespace() ) {
 605                         $dbw->update( 'pagelinks',
 606                                 [ 'pl_from_namespace' => $this->newTitle->getNamespace() ],
 607                                 [ 'pl_from' => $pageid ],
 608                                 __METHOD__
 609                         );
 610                         $dbw->update( 'templatelinks',
 611                                 [ 'tl_from_namespace' => $this->newTitle->getNamespace() ],
 612                                 [ 'tl_from' => $pageid ],
 613                                 __METHOD__
 614                         );
 615                         $dbw->update( 'imagelinks',
 616                                 [ 'il_from_namespace' => $this->newTitle->getNamespace() ],
 617                                 [ 'il_from' => $pageid ],
 618                                 __METHOD__
 619                         );
 620                 }
 621
 622                 # Update watchlists
 623                 $oldtitle = $this->oldTitle->getDBkey();
 624                 $newtitle = $this->newTitle->getDBkey();
 625                 $oldsnamespace = $this->nsInfo->getSubject( $this->oldTitle->getNamespace() );
 626                 $newsnamespace = $this->nsInfo->getSubject( $this->newTitle->getNamespace() );
 627                 if ( $oldsnamespace != $newsnamespace || $oldtitle != $newtitle ) {
 628                         $this->watchedItems->duplicateAllAssociatedEntries( $this->oldTitle, $this->newTitle );
 629                 }
 630
 631                 // If it is a file then move it last.
 632                 // This is done after all database changes so that file system errors cancel the transaction.
 633                 if ( $this->oldTitle->getNamespace() == NS_FILE ) {
 634                         $status = $this->moveFile( $this->oldTitle, $this->newTitle );
 635                         if ( !$status->isOK() ) {
 636                                 $dbw->cancelAtomic( __METHOD__ );
 637                                 return $status;
 638                         }
 639                 }
 640
 641                 Hooks::run(
 642                         'TitleMoveCompleting',
 643                         [ $this->oldTitle, $this->newTitle,
 644                                 $user, $pageid, $redirid, $reason, $nullRevision ]
 645                 );
 646
 647                 $dbw->endAtomic( __METHOD__ );
 648
 649                 $params = [
 650                         &$this->oldTitle,
 651                         &$this->newTitle,
 652                         &$user,
 653                         $pageid,
 654                         $redirid,
 655                         $reason,
 656                         $nullRevision
 657                 ];
 658                 // Keep each single hook handler atomic
 659                 DeferredUpdates::addUpdate(
 660                         new AtomicSectionUpdate(
 661                                 $dbw,
 662                                 __METHOD__,
 663                                 // Hold onto $user to avoid HHVM bug where it no longer
 664                                 // becomes a reference (T118683)
 665                                 function () use ( $params, &$user ) {
 666                                         Hooks::run( 'TitleMoveComplete', $params );
 667                                 }
 668                         )
 669                 );
 670
 671                 return Status::newGood();
 672         }
 673
 674         /**
 675          * Move a file associated with a page to a new location.
 676          * Can also be used to revert after a DB failure.
 677          *
 678          * @private
 679          * @param Title $oldTitle Old location to move the file from.
 680          * @param Title $newTitle New location to move the file to.
 681          * @return Status
 682          */
 683         private function moveFile( $oldTitle, $newTitle ) {
 684                 $status = Status::newFatal(
 685                         'cannotdelete',
 686                         $oldTitle->getPrefixedText()
 687                 );
 688
 689                 $file = $this->repoGroup->getLocalRepo()->newFile( $oldTitle );
 690                 $file->load( File::READ_LATEST );
 691                 if ( $file->exists() ) {
 692                         $status = $file->move( $newTitle );
 693                 }
 694
 695                 // Clear RepoGroup process cache
 696                 $this->repoGroup->clearCache( $oldTitle );
 697                 $this->repoGroup->clearCache( $newTitle ); # clear false negative cache
 698                 return $status;
 699         }
 700
 701         /**
 702          * Move page to a title which is either a redirect to the
 703          * source page or nonexistent
 704          *
 705          * @todo This was basically directly moved from Title, it should be split into
 706          *   smaller functions
 707          * @param User $user the User doing the move
 708          * @param Title $nt The page to move to, which should be a redirect or non-existent
 709          * @param string $reason The reason for the move
 710          * @param bool $createRedirect Whether to leave a redirect at the old title. Does not check
 711          *   if the user has the suppressredirect right
 712          * @param string[] $changeTags Change tags to apply to the entry in the move log
 713          * @return Revision the revision created by the move
 714          * @throws MWException
 715          */
 716         private function moveToInternal( User $user, &$nt, $reason = '', $createRedirect = true,
 717                 array $changeTags = []
 718         ) {
 719                 if ( $nt->exists() ) {
 720                         $moveOverRedirect = true;
 721                         $logType = 'move_redir';
 722                 } else {
 723                         $moveOverRedirect = false;
 724                         $logType = 'move';
 725                 }
 726
 727                 if ( $moveOverRedirect ) {
 728                         $overwriteMessage = wfMessage(
 729                                         'delete_and_move_reason',
 730                                         $this->oldTitle->getPrefixedText()
 731                                 )->inContentLanguage()->text();
 732                         $newpage = WikiPage::factory( $nt );
 733                         $errs = [];
 734                         $status = $newpage->doDeleteArticleReal(
 735                                 $overwriteMessage,
 736                                 /* $suppress */ false,
 737                                 $nt->getArticleID(),
 738                                 /* $commit */ false,
 739                                 $errs,
 740                                 $user,
 741                                 $changeTags,
 742                                 'delete_redir'
 743                         );
 744
 745                         if ( !$status->isGood() ) {
 746                                 throw new MWException( 'Failed to delete page-move revision: '
 747                                         . $status->getWikiText( false, false, 'en' ) );
 748                         }
 749
 750                         $nt->resetArticleID( false );
 751                 }
 752
 753                 if ( $createRedirect ) {
 754                         if ( $this->oldTitle->getNamespace() == NS_CATEGORY
 755                                 && !wfMessage( 'category-move-redirect-override' )->inContentLanguage()->isDisabled()
 756                         ) {
 757                                 $redirectContent = new WikitextContent(
 758                                         wfMessage( 'category-move-redirect-override' )
 759                                                 ->params( $nt->getPrefixedText() )->inContentLanguage()->plain() );
 760                         } else {
 761                                 $contentHandler = ContentHandler::getForTitle( $this->oldTitle );
 762                                 $redirectContent = $contentHandler->makeRedirectContent( $nt,
 763                                         wfMessage( 'move-redirect-text' )->inContentLanguage()->plain() );
 764                         }
 765
 766                         // NOTE: If this page's content model does not support redirects, $redirectContent will be null.
 767                 } else {
 768                         $redirectContent = null;
 769                 }
 770
 771                 // Figure out whether the content model is no longer the default
 772                 $oldDefault = ContentHandler::getDefaultModelFor( $this->oldTitle );
 773                 $contentModel = $this->oldTitle->getContentModel();
 774                 $newDefault = ContentHandler::getDefaultModelFor( $nt );
 775                 $defaultContentModelChanging = ( $oldDefault !== $newDefault
 776                         && $oldDefault === $contentModel );
 777
 778                 // T59084: log_page should be the ID of the *moved* page
 779                 $oldid = $this->oldTitle->getArticleID();
 780                 $logTitle = clone $this->oldTitle;
 781
 782                 $logEntry = new ManualLogEntry( 'move', $logType );
 783                 $logEntry->setPerformer( $user );
 784                 $logEntry->setTarget( $logTitle );
 785                 $logEntry->setComment( $reason );
 786                 $logEntry->setParameters( [
 787                         '4::target' => $nt->getPrefixedText(),
 788                         '5::noredir' => $redirectContent ? '0' : '1',
 789                 ] );
 790
 791                 $formatter = LogFormatter::newFromEntry( $logEntry );
 792                 $formatter->setContext( RequestContext::newExtraneousContext( $this->oldTitle ) );
 793                 $comment = $formatter->getPlainActionText();
 794                 if ( $reason ) {
 795                         $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 796                 }
 797
 798                 $dbw = $this->loadBalancer->getConnection( DB_MASTER );
 799
 800                 $oldpage = WikiPage::factory( $this->oldTitle );
 801                 $oldcountable = $oldpage->isCountable();
 802
 803                 $newpage = WikiPage::factory( $nt );
 804
 805                 # Change the name of the target page:
 806                 $dbw->update( 'page',
 807                         /* SET */ [
 808                                 'page_namespace' => $nt->getNamespace(),
 809                                 'page_title' => $nt->getDBkey(),
 810                         ],
 811                         /* WHERE */ [ 'page_id' => $oldid ],
 812                         __METHOD__
 813                 );
 814
 815                 # Save a null revision in the page's history notifying of the move
 816                 $nullRevision = Revision::newNullRevision( $dbw, $oldid, $comment, true, $user );
 817                 if ( !is_object( $nullRevision ) ) {
 818                         throw new MWException( 'Failed to create null revision while moving page ID '
 819                                 . $oldid . ' to ' . $nt->getPrefixedDBkey() );
 820                 }
 821
 822                 $nullRevId = $nullRevision->insertOn( $dbw );
 823                 $logEntry->setAssociatedRevId( $nullRevId );
 824
 825                 /**
 826                  * T163966
 827                  * Increment user_editcount during page moves
 828                  * Moved from SpecialMovepage.php per T195550
 829                  */
 830                 $user->incEditCount();
 831
 832                 if ( !$redirectContent ) {
 833                         // Clean up the old title *before* reset article id - T47348
 834                         WikiPage::onArticleDelete( $this->oldTitle );
 835                 }
 836
 837                 $this->oldTitle->resetArticleID( 0 ); // 0 == non existing
 838                 $nt->resetArticleID( $oldid );
 839                 $newpage->loadPageData( WikiPage::READ_LOCKING ); // T48397
 840
 841                 $newpage->updateRevisionOn( $dbw, $nullRevision );
 842
 843                 Hooks::run( 'NewRevisionFromEditComplete',
 844                         [ $newpage, $nullRevision, $nullRevision->getParentId(), $user ] );
 845
 846                 $newpage->doEditUpdates( $nullRevision, $user,
 847                         [ 'changed' => false, 'moved' => true, 'oldcountable' => $oldcountable ] );
 848
 849                 // If the default content model changes, we need to populate rev_content_model
 850                 if ( $defaultContentModelChanging ) {
 851                         $dbw->update(
 852                                 'revision',
 853                                 [ 'rev_content_model' => $contentModel ],
 854                                 [ 'rev_page' => $nt->getArticleID(), 'rev_content_model IS NULL' ],
 855                                 __METHOD__
 856                         );
 857                 }
 858
 859                 WikiPage::onArticleCreate( $nt );
 860
 861                 # Recreate the redirect, this time in the other direction.
 862                 if ( $redirectContent ) {
 863                         $redirectArticle = WikiPage::factory( $this->oldTitle );
 864                         $redirectArticle->loadFromRow( false, WikiPage::READ_LOCKING ); // T48397
 865                         $newid = $redirectArticle->insertOn( $dbw );
 866                         if ( $newid ) { // sanity
 867                                 $this->oldTitle->resetArticleID( $newid );
 868                                 $redirectRevision = new Revision( [
 869                                         'title' => $this->oldTitle, // for determining the default content model
 870                                         'page' => $newid,
 871                                         'user_text' => $user->getName(),
 872                                         'user' => $user->getId(),
 873                                         'comment' => $comment,
 874                                         'content' => $redirectContent ] );
 875                                 $redirectRevId = $redirectRevision->insertOn( $dbw );
 876                                 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
 877
 878                                 Hooks::run( 'NewRevisionFromEditComplete',
 879                                         [ $redirectArticle, $redirectRevision, false, $user ] );
 880
 881                                 $redirectArticle->doEditUpdates( $redirectRevision, $user, [ 'created' => true ] );
 882
 883                                 // make a copy because of log entry below
 884                                 $redirectTags = $changeTags;
 885                                 if ( in_array( 'mw-new-redirect', ChangeTags::getSoftwareTags() ) ) {
 886                                         $redirectTags[] = 'mw-new-redirect';
 887                                 }
 888                                 ChangeTags::addTags( $redirectTags, null, $redirectRevId, null );
 889                         }
 890                 }
 891
 892                 # Log the move
 893                 $logid = $logEntry->insert();
 894
 895                 $logEntry->setTags( $changeTags );
 896                 $logEntry->publish( $logid );
 897
 898                 return $nullRevision;
 899         }
 900 }