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                 } elseif ( $this->newTitle->getArticleID() && !$this->isValidMoveTarget() ) {
 168                         // The move is allowed only if (1) the target doesn't exist, or (2) the target is a
 169                         // redirect to the source, and has no history (so we can undo bad moves right after
 170                         // they're done).
 171                         $status->fatal( 'articleexists' );
 172                 }
 173
 174                 // @todo If the old title is invalid, maybe we should check if it somehow exists in the
 175                 // database and allow moving it to a valid name? Why prohibit the move from an empty name
 176                 // without checking in the database?
 177                 if ( $this->oldTitle->getDBkey() == '' ) {
 178                         $status->fatal( 'badarticleerror' );
 179                 } elseif ( $this->oldTitle->isExternal() ) {
 180                         $status->fatal( 'immobile-source-namespace-iw' );
 181                 } elseif ( !$this->oldTitle->isMovable() ) {
 182                         $status->fatal( 'immobile-source-namespace', $this->oldTitle->getNsText() );
 183                 } elseif ( !$this->oldTitle->exists() ) {
 184                         $status->fatal( 'movepage-source-doesnt-exist' );
 185                 }
 186
 187                 if ( $this->newTitle->isExternal() ) {
 188                         $status->fatal( 'immobile-target-namespace-iw' );
 189                 } elseif ( !$this->newTitle->isMovable() ) {
 190                         $status->fatal( 'immobile-target-namespace', $this->newTitle->getNsText() );
 191                 }
 192                 if ( !$this->newTitle->isValid() ) {
 193                         $status->fatal( 'movepage-invalid-target-title' );
 194                 }
 195
 196                 // Content model checks
 197                 if ( !$this->options->get( 'ContentHandlerUseDB' ) &&
 198                         $this->oldTitle->getContentModel() !== $this->newTitle->getContentModel() ) {
 199                         // can't move a page if that would change the page's content model
 200                         $status->fatal(
 201                                 'bad-target-model',
 202                                 ContentHandler::getLocalizedName( $this->oldTitle->getContentModel() ),
 203                                 ContentHandler::getLocalizedName( $this->newTitle->getContentModel() )
 204                         );
 205                 } elseif (
 206                         !ContentHandler::getForTitle( $this->oldTitle )->canBeUsedOn( $this->newTitle )
 207                 ) {
 208                         $status->fatal(
 209                                 'content-not-allowed-here',
 210                                 ContentHandler::getLocalizedName( $this->oldTitle->getContentModel() ),
 211                                 $this->newTitle->getPrefixedText(),
 212                                 SlotRecord::MAIN
 213                         );
 214                 }
 215
 216                 // Image-specific checks
 217                 if ( $this->oldTitle->inNamespace( NS_FILE ) ) {
 218                         $status->merge( $this->isValidFileMove() );
 219                 }
 220
 221                 if ( $this->newTitle->inNamespace( NS_FILE ) && !$this->oldTitle->inNamespace( NS_FILE ) ) {
 222                         $status->fatal( 'nonfile-cannot-move-to-file' );
 223                 }
 224
 225                 // Hook for extensions to say a title can't be moved for technical reasons
 226                 Hooks::run( 'MovePageIsValidMove', [ $this->oldTitle, $this->newTitle, $status ] );
 227
 228                 return $status;
 229         }
 230
 231         /**
 232          * Sanity checks for when a file is being moved
 233          *
 234          * @return Status
 235          */
 236         protected function isValidFileMove() {
 237                 $status = new Status();
 238
 239                 if ( !$this->newTitle->inNamespace( NS_FILE ) ) {
 240                         $status->fatal( 'imagenocrossnamespace' );
 241                         // No need for further errors about the target filename being wrong
 242                         return $status;
 243                 }
 244
 245                 $file = $this->repoGroup->getLocalRepo()->newFile( $this->oldTitle );
 246                 $file->load( File::READ_LATEST );
 247                 if ( $file->exists() ) {
 248                         if ( $this->newTitle->getText() != wfStripIllegalFilenameChars( $this->newTitle->getText() ) ) {
 249                                 $status->fatal( 'imageinvalidfilename' );
 250                         }
 251                         if ( !File::checkExtensionCompatibility( $file, $this->newTitle->getDBkey() ) ) {
 252                                 $status->fatal( 'imagetypemismatch' );
 253                         }
 254                 }
 255
 256                 return $status;
 257         }
 258
 259         /**
 260          * Checks if $this can be moved to a given Title
 261          * - Selects for update, so don't call it unless you mean business
 262          *
 263          * @since 1.25
 264          * @return bool
 265          */
 266         protected function isValidMoveTarget() {
 267                 # Is it an existing file?
 268                 if ( $this->newTitle->inNamespace( NS_FILE ) ) {
 269                         $file = $this->repoGroup->getLocalRepo()->newFile( $this->newTitle );
 270                         $file->load( File::READ_LATEST );
 271                         if ( $file->exists() ) {
 272                                 wfDebug( __METHOD__ . ": file exists\n" );
 273                                 return false;
 274                         }
 275                 }
 276                 # Is it a redirect with no history?
 277                 if ( !$this->newTitle->isSingleRevRedirect() ) {
 278                         wfDebug( __METHOD__ . ": not a one-rev redirect\n" );
 279                         return false;
 280                 }
 281                 # Get the article text
 282                 $rev = Revision::newFromTitle( $this->newTitle, false, Revision::READ_LATEST );
 283                 if ( !is_object( $rev ) ) {
 284                         return false;
 285                 }
 286                 $content = $rev->getContent();
 287                 # Does the redirect point to the source?
 288                 # Or is it a broken self-redirect, usually caused by namespace collisions?
 289                 $redirTitle = $content ? $content->getRedirectTarget() : null;
 290
 291                 if ( $redirTitle ) {
 292                         if ( $redirTitle->getPrefixedDBkey() !== $this->oldTitle->getPrefixedDBkey() &&
 293                                 $redirTitle->getPrefixedDBkey() !== $this->newTitle->getPrefixedDBkey() ) {
 294                                 wfDebug( __METHOD__ . ": redirect points to other page\n" );
 295                                 return false;
 296                         } else {
 297                                 return true;
 298                         }
 299                 } else {
 300                         # Fail safe (not a redirect after all. strange.)
 301                         wfDebug( __METHOD__ . ": failsafe: database says " . $this->newTitle->getPrefixedDBkey() .
 302                                 " is a redirect, but it doesn't contain a valid redirect.\n" );
 303                         return false;
 304                 }
 305         }
 306
 307         /**
 308          * Move a page without taking user permissions into account. Only checks if the move is itself
 309          * invalid, e.g., trying to move a special page or trying to move a page onto one that already
 310          * exists.
 311          *
 312          * @param User $user
 313          * @param string|null $reason
 314          * @param bool|null $createRedirect
 315          * @param string[] $changeTags Change tags to apply to the entry in the move log
 316          * @return Status
 317          */
 318         public function move(
 319                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 320         ) {
 321                 $status = $this->isValidMove();
 322                 if ( !$status->isOK() ) {
 323                         return $status;
 324                 }
 325
 326                 return $this->moveUnsafe( $user, $reason, $createRedirect, $changeTags );
 327         }
 328
 329         /**
 330          * Same as move(), but with permissions checks.
 331          *
 332          * @param User $user
 333          * @param string|null $reason
 334          * @param bool|null $createRedirect Ignored if user doesn't have suppressredirect permission
 335          * @param string[] $changeTags Change tags to apply to the entry in the move log
 336          * @return Status
 337          */
 338         public function moveIfAllowed(
 339                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 340         ) {
 341                 $status = $this->isValidMove();
 342                 $status->merge( $this->checkPermissions( $user, $reason ) );
 343                 if ( $changeTags ) {
 344                         $status->merge( ChangeTags::canAddTagsAccompanyingChange( $changeTags, $user ) );
 345                 }
 346
 347                 if ( !$status->isOK() ) {
 348                         // Auto-block user's IP if the account was "hard" blocked
 349                         $user->spreadAnyEditBlock();
 350                         return $status;
 351                 }
 352
 353                 // Check suppressredirect permission
 354                 if ( !$user->isAllowed( 'suppressredirect' ) ) {
 355                         $createRedirect = true;
 356                 }
 357
 358                 return $this->moveUnsafe( $user, $reason, $createRedirect, $changeTags );
 359         }
 360
 361         /**
 362          * Move the source page's subpages to be subpages of the target page, without checking user
 363          * permissions. The caller is responsible for moving the source page itself. We will still not
 364          * do moves that are inherently not allowed, nor will we move more than $wgMaximumMovedPages.
 365          *
 366          * @param User $user
 367          * @param string|null $reason The reason for the move
 368          * @param bool|null $createRedirect Whether to create redirects from the old subpages to
 369          *  the new ones
 370          * @param string[] $changeTags Applied to entries in the move log and redirect page revision
 371          * @return Status Good if no errors occurred. Ok if at least one page succeeded. The "value"
 372          *  of the top-level status is an array containing the per-title status for each page. For any
 373          *  move that succeeded, the "value" of the per-title status is the new page title.
 374          */
 375         public function moveSubpages(
 376                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 377         ) {
 378                 return $this->moveSubpagesInternal( false, $user, $reason, $createRedirect, $changeTags );
 379         }
 380
 381         /**
 382          * Move the source page's subpages to be subpages of the target page, with user permission
 383          * checks. The caller is responsible for moving the source page itself.
 384          *
 385          * @param User $user
 386          * @param string|null $reason The reason for the move
 387          * @param bool|null $createRedirect Whether to create redirects from the old subpages to
 388          *  the new ones. Ignored if the user doesn't have the 'suppressredirect' right.
 389          * @param string[] $changeTags Applied to entries in the move log and redirect page revision
 390          * @return Status Good if no errors occurred. Ok if at least one page succeeded. The "value"
 391          *  of the top-level status is an array containing the per-title status for each page. For any
 392          *  move that succeeded, the "value" of the per-title status is the new page title.
 393          */
 394         public function moveSubpagesIfAllowed(
 395                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 396         ) {
 397                 return $this->moveSubpagesInternal( true, $user, $reason, $createRedirect, $changeTags );
 398         }
 399
 400         /**
 401          * @param bool $checkPermissions
 402          * @param User $user
 403          * @param string $reason
 404          * @param bool $createRedirect
 405          * @param array $changeTags
 406          * @return Status
 407          */
 408         private function moveSubpagesInternal(
 409                 $checkPermissions, User $user, $reason, $createRedirect, array $changeTags
 410         ) {
 411                 global $wgMaximumMovedPages;
 412                 $services = MediaWikiServices::getInstance();
 413
 414                 if ( $checkPermissions ) {
 415                         if ( !$services->getPermissionManager()->userCan(
 416                                 'move-subpages', $user, $this->oldTitle )
 417                         ) {
 418                                 return Status::newFatal( 'cant-move-subpages' );
 419                         }
 420                 }
 421
 422                 $nsInfo = $services->getNamespaceInfo();
 423
 424                 // Do the source and target namespaces support subpages?
 425                 if ( !$nsInfo->hasSubpages( $this->oldTitle->getNamespace() ) ) {
 426                         return Status::newFatal( 'namespace-nosubpages',
 427                                 $nsInfo->getCanonicalName( $this->oldTitle->getNamespace() ) );
 428                 }
 429                 if ( !$nsInfo->hasSubpages( $this->newTitle->getNamespace() ) ) {
 430                         return Status::newFatal( 'namespace-nosubpages',
 431                                 $nsInfo->getCanonicalName( $this->newTitle->getNamespace() ) );
 432                 }
 433
 434                 // Return a status for the overall result. Its value will be an array with per-title
 435                 // status for each subpage. Merge any errors from the per-title statuses into the
 436                 // top-level status without resetting the overall result.
 437                 $topStatus = Status::newGood();
 438                 $perTitleStatus = [];
 439                 $subpages = $this->oldTitle->getSubpages( $wgMaximumMovedPages + 1 );
 440                 $count = 0;
 441                 foreach ( $subpages as $oldSubpage ) {
 442                         $count++;
 443                         if ( $count > $wgMaximumMovedPages ) {
 444                                 $status = Status::newFatal( 'movepage-max-pages', $wgMaximumMovedPages );
 445                                 $perTitleStatus[$oldSubpage->getPrefixedText()] = $status;
 446                                 $topStatus->merge( $status );
 447                                 $topStatus->setOk( true );
 448                                 break;
 449                         }
 450
 451                         // We don't know whether this function was called before or after moving the root page,
 452                         // so check both titles
 453                         if ( $oldSubpage->getArticleID() == $this->oldTitle->getArticleID() ||
 454                                 $oldSubpage->getArticleID() == $this->newTitle->getArticleID()
 455                         ) {
 456                                 // When moving a page to a subpage of itself, don't move it twice
 457                                 continue;
 458                         }
 459                         $newPageName = preg_replace(
 460                                         '#^' . preg_quote( $this->oldTitle->getDBkey(), '#' ) . '#',
 461                                         StringUtils::escapeRegexReplacement( $this->newTitle->getDBkey() ), # T23234
 462                                         $oldSubpage->getDBkey() );
 463                         if ( $oldSubpage->isTalkPage() ) {
 464                                 $newNs = $this->newTitle->getTalkPage()->getNamespace();
 465                         } else {
 466                                 $newNs = $this->newTitle->getSubjectPage()->getNamespace();
 467                         }
 468                         // T16385: we need makeTitleSafe because the new page names may be longer than 255
 469                         // characters.
 470                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 471
 472                         $mp = new MovePage( $oldSubpage, $newSubpage );
 473                         $method = $checkPermissions ? 'moveIfAllowed' : 'move';
 474                         $status = $mp->$method( $user, $reason, $createRedirect, $changeTags );
 475                         if ( $status->isOK() ) {
 476                                 $status->setResult( true, $newSubpage->getPrefixedText() );
 477                         }
 478                         $perTitleStatus[$oldSubpage->getPrefixedText()] = $status;
 479                         $topStatus->merge( $status );
 480                         $topStatus->setOk( true );
 481                 }
 482
 483                 $topStatus->value = $perTitleStatus;
 484                 return $topStatus;
 485         }
 486
 487         /**
 488          * Moves *without* any sort of safety or sanity checks. Hooks can still fail the move, however.
 489          *
 490          * @param User $user
 491          * @param string $reason
 492          * @param bool $createRedirect
 493          * @param string[] $changeTags Change tags to apply to the entry in the move log
 494          * @return Status
 495          */
 496         private function moveUnsafe( User $user, $reason, $createRedirect, array $changeTags ) {
 497                 $status = Status::newGood();
 498                 Hooks::run( 'TitleMove', [ $this->oldTitle, $this->newTitle, $user, $reason, &$status ] );
 499                 if ( !$status->isOK() ) {
 500                         // Move was aborted by the hook
 501                         return $status;
 502                 }
 503
 504                 $dbw = $this->loadBalancer->getConnection( DB_MASTER );
 505                 $dbw->startAtomic( __METHOD__, IDatabase::ATOMIC_CANCELABLE );
 506
 507                 Hooks::run( 'TitleMoveStarting', [ $this->oldTitle, $this->newTitle, $user ] );
 508
 509                 $pageid = $this->oldTitle->getArticleID( Title::GAID_FOR_UPDATE );
 510                 $protected = $this->oldTitle->isProtected();
 511
 512                 // Do the actual move; if this fails, it will throw an MWException(!)
 513                 $nullRevision = $this->moveToInternal( $user, $this->newTitle, $reason, $createRedirect,
 514                         $changeTags );
 515
 516                 // Refresh the sortkey for this row.  Be careful to avoid resetting
 517                 // cl_timestamp, which may disturb time-based lists on some sites.
 518                 // @todo This block should be killed, it's duplicating code
 519                 // from LinksUpdate::getCategoryInsertions() and friends.
 520                 $prefixes = $dbw->select(
 521                         'categorylinks',
 522                         [ 'cl_sortkey_prefix', 'cl_to' ],
 523                         [ 'cl_from' => $pageid ],
 524                         __METHOD__
 525                 );
 526                 $type = $this->nsInfo->getCategoryLinkType( $this->newTitle->getNamespace() );
 527                 foreach ( $prefixes as $prefixRow ) {
 528                         $prefix = $prefixRow->cl_sortkey_prefix;
 529                         $catTo = $prefixRow->cl_to;
 530                         $dbw->update( 'categorylinks',
 531                                 [
 532                                         'cl_sortkey' => Collation::singleton()->getSortKey(
 533                                                         $this->newTitle->getCategorySortkey( $prefix ) ),
 534                                         'cl_collation' => $this->options->get( 'CategoryCollation' ),
 535                                         'cl_type' => $type,
 536                                         'cl_timestamp=cl_timestamp' ],
 537                                 [
 538                                         'cl_from' => $pageid,
 539                                         'cl_to' => $catTo ],
 540                                 __METHOD__
 541                         );
 542                 }
 543
 544                 $redirid = $this->oldTitle->getArticleID();
 545
 546                 if ( $protected ) {
 547                         # Protect the redirect title as the title used to be...
 548                         $res = $dbw->select(
 549                                 'page_restrictions',
 550                                 [ 'pr_type', 'pr_level', 'pr_cascade', 'pr_user', 'pr_expiry' ],
 551                                 [ 'pr_page' => $pageid ],
 552                                 __METHOD__,
 553                                 'FOR UPDATE'
 554                         );
 555                         $rowsInsert = [];
 556                         foreach ( $res as $row ) {
 557                                 $rowsInsert[] = [
 558                                         'pr_page' => $redirid,
 559                                         'pr_type' => $row->pr_type,
 560                                         'pr_level' => $row->pr_level,
 561                                         'pr_cascade' => $row->pr_cascade,
 562                                         'pr_user' => $row->pr_user,
 563                                         'pr_expiry' => $row->pr_expiry
 564                                 ];
 565                         }
 566                         $dbw->insert( 'page_restrictions', $rowsInsert, __METHOD__, [ 'IGNORE' ] );
 567
 568                         // Build comment for log
 569                         $comment = wfMessage(
 570                                 'prot_1movedto2',
 571                                 $this->oldTitle->getPrefixedText(),
 572                                 $this->newTitle->getPrefixedText()
 573                         )->inContentLanguage()->text();
 574                         if ( $reason ) {
 575                                 $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 576                         }
 577
 578                         // reread inserted pr_ids for log relation
 579                         $insertedPrIds = $dbw->select(
 580                                 'page_restrictions',
 581                                 'pr_id',
 582                                 [ 'pr_page' => $redirid ],
 583                                 __METHOD__
 584                         );
 585                         $logRelationsValues = [];
 586                         foreach ( $insertedPrIds as $prid ) {
 587                                 $logRelationsValues[] = $prid->pr_id;
 588                         }
 589
 590                         // Update the protection log
 591                         $logEntry = new ManualLogEntry( 'protect', 'move_prot' );
 592                         $logEntry->setTarget( $this->newTitle );
 593                         $logEntry->setComment( $comment );
 594                         $logEntry->setPerformer( $user );
 595                         $logEntry->setParameters( [
 596                                 '4::oldtitle' => $this->oldTitle->getPrefixedText(),
 597                         ] );
 598                         $logEntry->setRelations( [ 'pr_id' => $logRelationsValues ] );
 599                         $logEntry->setTags( $changeTags );
 600                         $logId = $logEntry->insert();
 601                         $logEntry->publish( $logId );
 602                 }
 603
 604                 // Update *_from_namespace fields as needed
 605                 if ( $this->oldTitle->getNamespace() != $this->newTitle->getNamespace() ) {
 606                         $dbw->update( 'pagelinks',
 607                                 [ 'pl_from_namespace' => $this->newTitle->getNamespace() ],
 608                                 [ 'pl_from' => $pageid ],
 609                                 __METHOD__
 610                         );
 611                         $dbw->update( 'templatelinks',
 612                                 [ 'tl_from_namespace' => $this->newTitle->getNamespace() ],
 613                                 [ 'tl_from' => $pageid ],
 614                                 __METHOD__
 615                         );
 616                         $dbw->update( 'imagelinks',
 617                                 [ 'il_from_namespace' => $this->newTitle->getNamespace() ],
 618                                 [ 'il_from' => $pageid ],
 619                                 __METHOD__
 620                         );
 621                 }
 622
 623                 # Update watchlists
 624                 $oldtitle = $this->oldTitle->getDBkey();
 625                 $newtitle = $this->newTitle->getDBkey();
 626                 $oldsnamespace = $this->nsInfo->getSubject( $this->oldTitle->getNamespace() );
 627                 $newsnamespace = $this->nsInfo->getSubject( $this->newTitle->getNamespace() );
 628                 if ( $oldsnamespace != $newsnamespace || $oldtitle != $newtitle ) {
 629                         $this->watchedItems->duplicateAllAssociatedEntries( $this->oldTitle, $this->newTitle );
 630                 }
 631
 632                 // If it is a file then move it last.
 633                 // This is done after all database changes so that file system errors cancel the transaction.
 634                 if ( $this->oldTitle->getNamespace() == NS_FILE ) {
 635                         $status = $this->moveFile( $this->oldTitle, $this->newTitle );
 636                         if ( !$status->isOK() ) {
 637                                 $dbw->cancelAtomic( __METHOD__ );
 638                                 return $status;
 639                         }
 640                 }
 641
 642                 Hooks::run(
 643                         'TitleMoveCompleting',
 644                         [ $this->oldTitle, $this->newTitle,
 645                                 $user, $pageid, $redirid, $reason, $nullRevision ]
 646                 );
 647
 648                 $dbw->endAtomic( __METHOD__ );
 649
 650                 $params = [
 651                         &$this->oldTitle,
 652                         &$this->newTitle,
 653                         &$user,
 654                         $pageid,
 655                         $redirid,
 656                         $reason,
 657                         $nullRevision
 658                 ];
 659                 // Keep each single hook handler atomic
 660                 DeferredUpdates::addUpdate(
 661                         new AtomicSectionUpdate(
 662                                 $dbw,
 663                                 __METHOD__,
 664                                 // Hold onto $user to avoid HHVM bug where it no longer
 665                                 // becomes a reference (T118683)
 666                                 function () use ( $params, &$user ) {
 667                                         Hooks::run( 'TitleMoveComplete', $params );
 668                                 }
 669                         )
 670                 );
 671
 672                 return Status::newGood();
 673         }
 674
 675         /**
 676          * Move a file associated with a page to a new location.
 677          * Can also be used to revert after a DB failure.
 678          *
 679          * @private
 680          * @param Title $oldTitle Old location to move the file from.
 681          * @param Title $newTitle New location to move the file to.
 682          * @return Status
 683          */
 684         private function moveFile( $oldTitle, $newTitle ) {
 685                 $status = Status::newFatal(
 686                         'cannotdelete',
 687                         $oldTitle->getPrefixedText()
 688                 );
 689
 690                 $file = $this->repoGroup->getLocalRepo()->newFile( $oldTitle );
 691                 $file->load( File::READ_LATEST );
 692                 if ( $file->exists() ) {
 693                         $status = $file->move( $newTitle );
 694                 }
 695
 696                 // Clear RepoGroup process cache
 697                 $this->repoGroup->clearCache( $oldTitle );
 698                 $this->repoGroup->clearCache( $newTitle ); # clear false negative cache
 699                 return $status;
 700         }
 701
 702         /**
 703          * Move page to a title which is either a redirect to the
 704          * source page or nonexistent
 705          *
 706          * @todo This was basically directly moved from Title, it should be split into
 707          *   smaller functions
 708          * @param User $user the User doing the move
 709          * @param Title $nt The page to move to, which should be a redirect or non-existent
 710          * @param string $reason The reason for the move
 711          * @param bool $createRedirect Whether to leave a redirect at the old title. Does not check
 712          *   if the user has the suppressredirect right
 713          * @param string[] $changeTags Change tags to apply to the entry in the move log
 714          * @return Revision the revision created by the move
 715          * @throws MWException
 716          */
 717         private function moveToInternal( User $user, &$nt, $reason = '', $createRedirect = true,
 718                 array $changeTags = []
 719         ) {
 720                 if ( $nt->exists() ) {
 721                         $moveOverRedirect = true;
 722                         $logType = 'move_redir';
 723                 } else {
 724                         $moveOverRedirect = false;
 725                         $logType = 'move';
 726                 }
 727
 728                 if ( $moveOverRedirect ) {
 729                         $overwriteMessage = wfMessage(
 730                                         'delete_and_move_reason',
 731                                         $this->oldTitle->getPrefixedText()
 732                                 )->inContentLanguage()->text();
 733                         $newpage = WikiPage::factory( $nt );
 734                         $errs = [];
 735                         $status = $newpage->doDeleteArticleReal(
 736                                 $overwriteMessage,
 737                                 /* $suppress */ false,
 738                                 $nt->getArticleID(),
 739                                 /* $commit */ false,
 740                                 $errs,
 741                                 $user,
 742                                 $changeTags,
 743                                 'delete_redir'
 744                         );
 745
 746                         if ( !$status->isGood() ) {
 747                                 throw new MWException( 'Failed to delete page-move revision: '
 748                                         . $status->getWikiText( false, false, 'en' ) );
 749                         }
 750
 751                         $nt->resetArticleID( false );
 752                 }
 753
 754                 if ( $createRedirect ) {
 755                         if ( $this->oldTitle->getNamespace() == NS_CATEGORY
 756                                 && !wfMessage( 'category-move-redirect-override' )->inContentLanguage()->isDisabled()
 757                         ) {
 758                                 $redirectContent = new WikitextContent(
 759                                         wfMessage( 'category-move-redirect-override' )
 760                                                 ->params( $nt->getPrefixedText() )->inContentLanguage()->plain() );
 761                         } else {
 762                                 $contentHandler = ContentHandler::getForTitle( $this->oldTitle );
 763                                 $redirectContent = $contentHandler->makeRedirectContent( $nt,
 764                                         wfMessage( 'move-redirect-text' )->inContentLanguage()->plain() );
 765                         }
 766
 767                         // NOTE: If this page's content model does not support redirects, $redirectContent will be null.
 768                 } else {
 769                         $redirectContent = null;
 770                 }
 771
 772                 // Figure out whether the content model is no longer the default
 773                 $oldDefault = ContentHandler::getDefaultModelFor( $this->oldTitle );
 774                 $contentModel = $this->oldTitle->getContentModel();
 775                 $newDefault = ContentHandler::getDefaultModelFor( $nt );
 776                 $defaultContentModelChanging = ( $oldDefault !== $newDefault
 777                         && $oldDefault === $contentModel );
 778
 779                 // T59084: log_page should be the ID of the *moved* page
 780                 $oldid = $this->oldTitle->getArticleID();
 781                 $logTitle = clone $this->oldTitle;
 782
 783                 $logEntry = new ManualLogEntry( 'move', $logType );
 784                 $logEntry->setPerformer( $user );
 785                 $logEntry->setTarget( $logTitle );
 786                 $logEntry->setComment( $reason );
 787                 $logEntry->setParameters( [
 788                         '4::target' => $nt->getPrefixedText(),
 789                         '5::noredir' => $redirectContent ? '0' : '1',
 790                 ] );
 791
 792                 $formatter = LogFormatter::newFromEntry( $logEntry );
 793                 $formatter->setContext( RequestContext::newExtraneousContext( $this->oldTitle ) );
 794                 $comment = $formatter->getPlainActionText();
 795                 if ( $reason ) {
 796                         $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 797                 }
 798
 799                 $dbw = $this->loadBalancer->getConnection( DB_MASTER );
 800
 801                 $oldpage = WikiPage::factory( $this->oldTitle );
 802                 $oldcountable = $oldpage->isCountable();
 803
 804                 $newpage = WikiPage::factory( $nt );
 805
 806                 # Change the name of the target page:
 807                 $dbw->update( 'page',
 808                         /* SET */ [
 809                                 'page_namespace' => $nt->getNamespace(),
 810                                 'page_title' => $nt->getDBkey(),
 811                         ],
 812                         /* WHERE */ [ 'page_id' => $oldid ],
 813                         __METHOD__
 814                 );
 815
 816                 # Save a null revision in the page's history notifying of the move
 817                 $nullRevision = Revision::newNullRevision( $dbw, $oldid, $comment, true, $user );
 818                 if ( !is_object( $nullRevision ) ) {
 819                         throw new MWException( 'Failed to create null revision while moving page ID '
 820                                 . $oldid . ' to ' . $nt->getPrefixedDBkey() );
 821                 }
 822
 823                 $nullRevId = $nullRevision->insertOn( $dbw );
 824                 $logEntry->setAssociatedRevId( $nullRevId );
 825
 826                 /**
 827                  * T163966
 828                  * Increment user_editcount during page moves
 829                  * Moved from SpecialMovepage.php per T195550
 830                  */
 831                 $user->incEditCount();
 832
 833                 if ( !$redirectContent ) {
 834                         // Clean up the old title *before* reset article id - T47348
 835                         WikiPage::onArticleDelete( $this->oldTitle );
 836                 }
 837
 838                 $this->oldTitle->resetArticleID( 0 ); // 0 == non existing
 839                 $nt->resetArticleID( $oldid );
 840                 $newpage->loadPageData( WikiPage::READ_LOCKING ); // T48397
 841
 842                 $newpage->updateRevisionOn( $dbw, $nullRevision );
 843
 844                 Hooks::run( 'NewRevisionFromEditComplete',
 845                         [ $newpage, $nullRevision, $nullRevision->getParentId(), $user ] );
 846
 847                 $newpage->doEditUpdates( $nullRevision, $user,
 848                         [ 'changed' => false, 'moved' => true, 'oldcountable' => $oldcountable ] );
 849
 850                 // If the default content model changes, we need to populate rev_content_model
 851                 if ( $defaultContentModelChanging ) {
 852                         $dbw->update(
 853                                 'revision',
 854                                 [ 'rev_content_model' => $contentModel ],
 855                                 [ 'rev_page' => $nt->getArticleID(), 'rev_content_model IS NULL' ],
 856                                 __METHOD__
 857                         );
 858                 }
 859
 860                 WikiPage::onArticleCreate( $nt );
 861
 862                 # Recreate the redirect, this time in the other direction.
 863                 if ( $redirectContent ) {
 864                         $redirectArticle = WikiPage::factory( $this->oldTitle );
 865                         $redirectArticle->loadFromRow( false, WikiPage::READ_LOCKING ); // T48397
 866                         $newid = $redirectArticle->insertOn( $dbw );
 867                         if ( $newid ) { // sanity
 868                                 $this->oldTitle->resetArticleID( $newid );
 869                                 $redirectRevision = new Revision( [
 870                                         'title' => $this->oldTitle, // for determining the default content model
 871                                         'page' => $newid,
 872                                         'user_text' => $user->getName(),
 873                                         'user' => $user->getId(),
 874                                         'comment' => $comment,
 875                                         'content' => $redirectContent ] );
 876                                 $redirectRevId = $redirectRevision->insertOn( $dbw );
 877                                 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
 878
 879                                 Hooks::run( 'NewRevisionFromEditComplete',
 880                                         [ $redirectArticle, $redirectRevision, false, $user ] );
 881
 882                                 $redirectArticle->doEditUpdates( $redirectRevision, $user, [ 'created' => true ] );
 883
 884                                 // make a copy because of log entry below
 885                                 $redirectTags = $changeTags;
 886                                 if ( in_array( 'mw-new-redirect', ChangeTags::getSoftwareTags() ) ) {
 887                                         $redirectTags[] = 'mw-new-redirect';
 888                                 }
 889                                 ChangeTags::addTags( $redirectTags, null, $redirectRevId, null );
 890                         }
 891                 }
 892
 893                 # Log the move
 894                 $logid = $logEntry->insert();
 895
 896                 $logEntry->setTags( $changeTags );
 897                 $logEntry->publish( $logid );
 898
 899                 return $nullRevision;
 900         }
 901 }