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\ILoadBalancer;
  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 ILoadBalancer
  55          */
  56         protected $loadBalancer;
  57
  58         /**
  59          * @var NamespaceInfo
  60          */
  61         protected $nsInfo;
  62
  63         /**
  64          * @var WatchedItemStoreInterface
  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 ILoadBalancer|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                 ILoadBalancer $loadBalancer = null,
  94                 NamespaceInfo $nsInfo = null,
  95                 WatchedItemStoreInterface $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                 $permissionManager = MediaWikiServices::getInstance()->getPermissionManager();
 145                 if ( $tp !== false && !$permissionManager->userHasRight( $user, $tp['permission'] ) ) {
 146                         $status->fatal( 'cantmove-titleprotected' );
 147                 }
 148
 149                 Hooks::run( 'MovePageCheckPermissions',
 150                         [ $this->oldTitle, $this->newTitle, $user, $reason, $status ]
 151                 );
 152
 153                 return $status;
 154         }
 155
 156         /**
 157          * Does various sanity checks that the move is
 158          * valid. Only things based on the two titles
 159          * should be checked here.
 160          *
 161          * @return Status
 162          */
 163         public function isValidMove() {
 164                 $status = new Status();
 165
 166                 if ( $this->oldTitle->equals( $this->newTitle ) ) {
 167                         $status->fatal( 'selfmove' );
 168                 } elseif ( $this->newTitle->getArticleID() && !$this->isValidMoveTarget() ) {
 169                         // The move is allowed only if (1) the target doesn't exist, or (2) the target is a
 170                         // redirect to the source, and has no history (so we can undo bad moves right after
 171                         // they're done).
 172                         $status->fatal( 'articleexists' );
 173                 }
 174
 175                 // @todo If the old title is invalid, maybe we should check if it somehow exists in the
 176                 // database and allow moving it to a valid name? Why prohibit the move from an empty name
 177                 // without checking in the database?
 178                 if ( $this->oldTitle->getDBkey() == '' ) {
 179                         $status->fatal( 'badarticleerror' );
 180                 } elseif ( $this->oldTitle->isExternal() ) {
 181                         $status->fatal( 'immobile-source-namespace-iw' );
 182                 } elseif ( !$this->oldTitle->isMovable() ) {
 183                         $status->fatal( 'immobile-source-namespace', $this->oldTitle->getNsText() );
 184                 } elseif ( !$this->oldTitle->exists() ) {
 185                         $status->fatal( 'movepage-source-doesnt-exist' );
 186                 }
 187
 188                 if ( $this->newTitle->isExternal() ) {
 189                         $status->fatal( 'immobile-target-namespace-iw' );
 190                 } elseif ( !$this->newTitle->isMovable() ) {
 191                         $status->fatal( 'immobile-target-namespace', $this->newTitle->getNsText() );
 192                 }
 193                 if ( !$this->newTitle->isValid() ) {
 194                         $status->fatal( 'movepage-invalid-target-title' );
 195                 }
 196
 197                 // Content model checks
 198                 if ( !$this->options->get( 'ContentHandlerUseDB' ) &&
 199                         $this->oldTitle->getContentModel() !== $this->newTitle->getContentModel() ) {
 200                         // can't move a page if that would change the page's content model
 201                         $status->fatal(
 202                                 'bad-target-model',
 203                                 ContentHandler::getLocalizedName( $this->oldTitle->getContentModel() ),
 204                                 ContentHandler::getLocalizedName( $this->newTitle->getContentModel() )
 205                         );
 206                 } elseif (
 207                         !ContentHandler::getForTitle( $this->oldTitle )->canBeUsedOn( $this->newTitle )
 208                 ) {
 209                         $status->fatal(
 210                                 'content-not-allowed-here',
 211                                 ContentHandler::getLocalizedName( $this->oldTitle->getContentModel() ),
 212                                 $this->newTitle->getPrefixedText(),
 213                                 SlotRecord::MAIN
 214                         );
 215                 }
 216
 217                 // Image-specific checks
 218                 if ( $this->oldTitle->inNamespace( NS_FILE ) ) {
 219                         $status->merge( $this->isValidFileMove() );
 220                 }
 221
 222                 if ( $this->newTitle->inNamespace( NS_FILE ) && !$this->oldTitle->inNamespace( NS_FILE ) ) {
 223                         $status->fatal( 'nonfile-cannot-move-to-file' );
 224                 }
 225
 226                 // Hook for extensions to say a title can't be moved for technical reasons
 227                 Hooks::run( 'MovePageIsValidMove', [ $this->oldTitle, $this->newTitle, $status ] );
 228
 229                 return $status;
 230         }
 231
 232         /**
 233          * Sanity checks for when a file is being moved
 234          *
 235          * @return Status
 236          */
 237         protected function isValidFileMove() {
 238                 $status = new Status();
 239
 240                 if ( !$this->newTitle->inNamespace( NS_FILE ) ) {
 241                         $status->fatal( 'imagenocrossnamespace' );
 242                         // No need for further errors about the target filename being wrong
 243                         return $status;
 244                 }
 245
 246                 $file = $this->repoGroup->getLocalRepo()->newFile( $this->oldTitle );
 247                 $file->load( File::READ_LATEST );
 248                 if ( $file->exists() ) {
 249                         if ( $this->newTitle->getText() != wfStripIllegalFilenameChars( $this->newTitle->getText() ) ) {
 250                                 $status->fatal( 'imageinvalidfilename' );
 251                         }
 252                         if ( !File::checkExtensionCompatibility( $file, $this->newTitle->getDBkey() ) ) {
 253                                 $status->fatal( 'imagetypemismatch' );
 254                         }
 255                 }
 256
 257                 return $status;
 258         }
 259
 260         /**
 261          * Checks if $this can be moved to a given Title
 262          * - Selects for update, so don't call it unless you mean business
 263          *
 264          * @since 1.25
 265          * @return bool
 266          */
 267         protected function isValidMoveTarget() {
 268                 # Is it an existing file?
 269                 if ( $this->newTitle->inNamespace( NS_FILE ) ) {
 270                         $file = $this->repoGroup->getLocalRepo()->newFile( $this->newTitle );
 271                         $file->load( File::READ_LATEST );
 272                         if ( $file->exists() ) {
 273                                 wfDebug( __METHOD__ . ": file exists\n" );
 274                                 return false;
 275                         }
 276                 }
 277                 # Is it a redirect with no history?
 278                 if ( !$this->newTitle->isSingleRevRedirect() ) {
 279                         wfDebug( __METHOD__ . ": not a one-rev redirect\n" );
 280                         return false;
 281                 }
 282                 # Get the article text
 283                 $rev = Revision::newFromTitle( $this->newTitle, false, Revision::READ_LATEST );
 284                 if ( !is_object( $rev ) ) {
 285                         return false;
 286                 }
 287                 $content = $rev->getContent();
 288                 # Does the redirect point to the source?
 289                 # Or is it a broken self-redirect, usually caused by namespace collisions?
 290                 $redirTitle = $content ? $content->getRedirectTarget() : null;
 291
 292                 if ( $redirTitle ) {
 293                         if ( $redirTitle->getPrefixedDBkey() !== $this->oldTitle->getPrefixedDBkey() &&
 294                                 $redirTitle->getPrefixedDBkey() !== $this->newTitle->getPrefixedDBkey() ) {
 295                                 wfDebug( __METHOD__ . ": redirect points to other page\n" );
 296                                 return false;
 297                         } else {
 298                                 return true;
 299                         }
 300                 } else {
 301                         # Fail safe (not a redirect after all. strange.)
 302                         wfDebug( __METHOD__ . ": failsafe: database says " . $this->newTitle->getPrefixedDBkey() .
 303                                 " is a redirect, but it doesn't contain a valid redirect.\n" );
 304                         return false;
 305                 }
 306         }
 307
 308         /**
 309          * Move a page without taking user permissions into account. Only checks if the move is itself
 310          * invalid, e.g., trying to move a special page or trying to move a page onto one that already
 311          * exists.
 312          *
 313          * @param User $user
 314          * @param string|null $reason
 315          * @param bool|null $createRedirect
 316          * @param string[] $changeTags Change tags to apply to the entry in the move log
 317          * @return Status
 318          */
 319         public function move(
 320                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 321         ) {
 322                 $status = $this->isValidMove();
 323                 if ( !$status->isOK() ) {
 324                         return $status;
 325                 }
 326
 327                 return $this->moveUnsafe( $user, $reason, $createRedirect, $changeTags );
 328         }
 329
 330         /**
 331          * Same as move(), but with permissions checks.
 332          *
 333          * @param User $user
 334          * @param string|null $reason
 335          * @param bool|null $createRedirect Ignored if user doesn't have suppressredirect permission
 336          * @param string[] $changeTags Change tags to apply to the entry in the move log
 337          * @return Status
 338          */
 339         public function moveIfAllowed(
 340                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 341         ) {
 342                 $status = $this->isValidMove();
 343                 $status->merge( $this->checkPermissions( $user, $reason ) );
 344                 if ( $changeTags ) {
 345                         $status->merge( ChangeTags::canAddTagsAccompanyingChange( $changeTags, $user ) );
 346                 }
 347
 348                 if ( !$status->isOK() ) {
 349                         // Auto-block user's IP if the account was "hard" blocked
 350                         $user->spreadAnyEditBlock();
 351                         return $status;
 352                 }
 353
 354                 // Check suppressredirect permission
 355                 $permissionManager = MediaWikiServices::getInstance()->getPermissionManager();
 356                 if ( !$permissionManager->userHasRight( $user, 'suppressredirect' ) ) {
 357                         $createRedirect = true;
 358                 }
 359
 360                 return $this->moveUnsafe( $user, $reason, $createRedirect, $changeTags );
 361         }
 362
 363         /**
 364          * Move the source page's subpages to be subpages of the target page, without checking user
 365          * permissions. The caller is responsible for moving the source page itself. We will still not
 366          * do moves that are inherently not allowed, nor will we move more than $wgMaximumMovedPages.
 367          *
 368          * @param User $user
 369          * @param string|null $reason The reason for the move
 370          * @param bool|null $createRedirect Whether to create redirects from the old subpages to
 371          *  the new ones
 372          * @param string[] $changeTags Applied to entries in the move log and redirect page revision
 373          * @return Status Good if no errors occurred. Ok if at least one page succeeded. The "value"
 374          *  of the top-level status is an array containing the per-title status for each page. For any
 375          *  move that succeeded, the "value" of the per-title status is the new page title.
 376          */
 377         public function moveSubpages(
 378                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 379         ) {
 380                 return $this->moveSubpagesInternal( false, $user, $reason, $createRedirect, $changeTags );
 381         }
 382
 383         /**
 384          * Move the source page's subpages to be subpages of the target page, with user permission
 385          * checks. The caller is responsible for moving the source page itself.
 386          *
 387          * @param User $user
 388          * @param string|null $reason The reason for the move
 389          * @param bool|null $createRedirect Whether to create redirects from the old subpages to
 390          *  the new ones. Ignored if the user doesn't have the 'suppressredirect' right.
 391          * @param string[] $changeTags Applied to entries in the move log and redirect page revision
 392          * @return Status Good if no errors occurred. Ok if at least one page succeeded. The "value"
 393          *  of the top-level status is an array containing the per-title status for each page. For any
 394          *  move that succeeded, the "value" of the per-title status is the new page title.
 395          */
 396         public function moveSubpagesIfAllowed(
 397                 User $user, $reason = null, $createRedirect = true, array $changeTags = []
 398         ) {
 399                 return $this->moveSubpagesInternal( true, $user, $reason, $createRedirect, $changeTags );
 400         }
 401
 402         /**
 403          * @param bool $checkPermissions
 404          * @param User $user
 405          * @param string $reason
 406          * @param bool $createRedirect
 407          * @param array $changeTags
 408          * @return Status
 409          */
 410         private function moveSubpagesInternal(
 411                 $checkPermissions, User $user, $reason, $createRedirect, array $changeTags
 412         ) {
 413                 global $wgMaximumMovedPages;
 414                 $services = MediaWikiServices::getInstance();
 415
 416                 if ( $checkPermissions ) {
 417                         if ( !$services->getPermissionManager()->userCan(
 418                                 'move-subpages', $user, $this->oldTitle )
 419                         ) {
 420                                 return Status::newFatal( 'cant-move-subpages' );
 421                         }
 422                 }
 423
 424                 $nsInfo = $services->getNamespaceInfo();
 425
 426                 // Do the source and target namespaces support subpages?
 427                 if ( !$nsInfo->hasSubpages( $this->oldTitle->getNamespace() ) ) {
 428                         return Status::newFatal( 'namespace-nosubpages',
 429                                 $nsInfo->getCanonicalName( $this->oldTitle->getNamespace() ) );
 430                 }
 431                 if ( !$nsInfo->hasSubpages( $this->newTitle->getNamespace() ) ) {
 432                         return Status::newFatal( 'namespace-nosubpages',
 433                                 $nsInfo->getCanonicalName( $this->newTitle->getNamespace() ) );
 434                 }
 435
 436                 // Return a status for the overall result. Its value will be an array with per-title
 437                 // status for each subpage. Merge any errors from the per-title statuses into the
 438                 // top-level status without resetting the overall result.
 439                 $topStatus = Status::newGood();
 440                 $perTitleStatus = [];
 441                 $subpages = $this->oldTitle->getSubpages( $wgMaximumMovedPages + 1 );
 442                 $count = 0;
 443                 foreach ( $subpages as $oldSubpage ) {
 444                         $count++;
 445                         if ( $count > $wgMaximumMovedPages ) {
 446                                 $status = Status::newFatal( 'movepage-max-pages', $wgMaximumMovedPages );
 447                                 $perTitleStatus[$oldSubpage->getPrefixedText()] = $status;
 448                                 $topStatus->merge( $status );
 449                                 $topStatus->setOK( true );
 450                                 break;
 451                         }
 452
 453                         // We don't know whether this function was called before or after moving the root page,
 454                         // so check both titles
 455                         if ( $oldSubpage->getArticleID() == $this->oldTitle->getArticleID() ||
 456                                 $oldSubpage->getArticleID() == $this->newTitle->getArticleID()
 457                         ) {
 458                                 // When moving a page to a subpage of itself, don't move it twice
 459                                 continue;
 460                         }
 461                         $newPageName = preg_replace(
 462                                         '#^' . preg_quote( $this->oldTitle->getDBkey(), '#' ) . '#',
 463                                         StringUtils::escapeRegexReplacement( $this->newTitle->getDBkey() ), # T23234
 464                                         $oldSubpage->getDBkey() );
 465                         if ( $oldSubpage->isTalkPage() ) {
 466                                 $newNs = $this->newTitle->getTalkPage()->getNamespace();
 467                         } else {
 468                                 $newNs = $this->newTitle->getSubjectPage()->getNamespace();
 469                         }
 470                         // T16385: we need makeTitleSafe because the new page names may be longer than 255
 471                         // characters.
 472                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 473
 474                         $mp = new MovePage( $oldSubpage, $newSubpage );
 475                         $method = $checkPermissions ? 'moveIfAllowed' : 'move';
 476                         $status = $mp->$method( $user, $reason, $createRedirect, $changeTags );
 477                         if ( $status->isOK() ) {
 478                                 $status->setResult( true, $newSubpage->getPrefixedText() );
 479                         }
 480                         $perTitleStatus[$oldSubpage->getPrefixedText()] = $status;
 481                         $topStatus->merge( $status );
 482                         $topStatus->setOK( true );
 483                 }
 484
 485                 $topStatus->value = $perTitleStatus;
 486                 return $topStatus;
 487         }
 488
 489         /**
 490          * Moves *without* any sort of safety or sanity checks. Hooks can still fail the move, however.
 491          *
 492          * @param User $user
 493          * @param string $reason
 494          * @param bool $createRedirect
 495          * @param string[] $changeTags Change tags to apply to the entry in the move log
 496          * @return Status
 497          */
 498         private function moveUnsafe( User $user, $reason, $createRedirect, array $changeTags ) {
 499                 $status = Status::newGood();
 500                 Hooks::run( 'TitleMove', [ $this->oldTitle, $this->newTitle, $user, $reason, &$status ] );
 501                 if ( !$status->isOK() ) {
 502                         // Move was aborted by the hook
 503                         return $status;
 504                 }
 505
 506                 $dbw = $this->loadBalancer->getConnection( DB_MASTER );
 507                 $dbw->startAtomic( __METHOD__, IDatabase::ATOMIC_CANCELABLE );
 508
 509                 Hooks::run( 'TitleMoveStarting', [ $this->oldTitle, $this->newTitle, $user ] );
 510
 511                 $pageid = $this->oldTitle->getArticleID( Title::GAID_FOR_UPDATE );
 512                 $protected = $this->oldTitle->isProtected();
 513
 514                 // Do the actual move; if this fails, it will throw an MWException(!)
 515                 $nullRevision = $this->moveToInternal( $user, $this->newTitle, $reason, $createRedirect,
 516                         $changeTags );
 517
 518                 // Refresh the sortkey for this row.  Be careful to avoid resetting
 519                 // cl_timestamp, which may disturb time-based lists on some sites.
 520                 // @todo This block should be killed, it's duplicating code
 521                 // from LinksUpdate::getCategoryInsertions() and friends.
 522                 $prefixes = $dbw->select(
 523                         'categorylinks',
 524                         [ 'cl_sortkey_prefix', 'cl_to' ],
 525                         [ 'cl_from' => $pageid ],
 526                         __METHOD__
 527                 );
 528                 $type = $this->nsInfo->getCategoryLinkType( $this->newTitle->getNamespace() );
 529                 foreach ( $prefixes as $prefixRow ) {
 530                         $prefix = $prefixRow->cl_sortkey_prefix;
 531                         $catTo = $prefixRow->cl_to;
 532                         $dbw->update( 'categorylinks',
 533                                 [
 534                                         'cl_sortkey' => Collation::singleton()->getSortKey(
 535                                                         $this->newTitle->getCategorySortkey( $prefix ) ),
 536                                         'cl_collation' => $this->options->get( 'CategoryCollation' ),
 537                                         'cl_type' => $type,
 538                                         'cl_timestamp=cl_timestamp' ],
 539                                 [
 540                                         'cl_from' => $pageid,
 541                                         'cl_to' => $catTo ],
 542                                 __METHOD__
 543                         );
 544                 }
 545
 546                 $redirid = $this->oldTitle->getArticleID();
 547
 548                 if ( $protected ) {
 549                         # Protect the redirect title as the title used to be...
 550                         $res = $dbw->select(
 551                                 'page_restrictions',
 552                                 [ 'pr_type', 'pr_level', 'pr_cascade', 'pr_user', 'pr_expiry' ],
 553                                 [ 'pr_page' => $pageid ],
 554                                 __METHOD__,
 555                                 'FOR UPDATE'
 556                         );
 557                         $rowsInsert = [];
 558                         foreach ( $res as $row ) {
 559                                 $rowsInsert[] = [
 560                                         'pr_page' => $redirid,
 561                                         'pr_type' => $row->pr_type,
 562                                         'pr_level' => $row->pr_level,
 563                                         'pr_cascade' => $row->pr_cascade,
 564                                         'pr_user' => $row->pr_user,
 565                                         'pr_expiry' => $row->pr_expiry
 566                                 ];
 567                         }
 568                         $dbw->insert( 'page_restrictions', $rowsInsert, __METHOD__, [ 'IGNORE' ] );
 569
 570                         // Build comment for log
 571                         $comment = wfMessage(
 572                                 'prot_1movedto2',
 573                                 $this->oldTitle->getPrefixedText(),
 574                                 $this->newTitle->getPrefixedText()
 575                         )->inContentLanguage()->text();
 576                         if ( $reason ) {
 577                                 $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 578                         }
 579
 580                         // reread inserted pr_ids for log relation
 581                         $insertedPrIds = $dbw->select(
 582                                 'page_restrictions',
 583                                 'pr_id',
 584                                 [ 'pr_page' => $redirid ],
 585                                 __METHOD__
 586                         );
 587                         $logRelationsValues = [];
 588                         foreach ( $insertedPrIds as $prid ) {
 589                                 $logRelationsValues[] = $prid->pr_id;
 590                         }
 591
 592                         // Update the protection log
 593                         $logEntry = new ManualLogEntry( 'protect', 'move_prot' );
 594                         $logEntry->setTarget( $this->newTitle );
 595                         $logEntry->setComment( $comment );
 596                         $logEntry->setPerformer( $user );
 597                         $logEntry->setParameters( [
 598                                 '4::oldtitle' => $this->oldTitle->getPrefixedText(),
 599                         ] );
 600                         $logEntry->setRelations( [ 'pr_id' => $logRelationsValues ] );
 601                         $logEntry->addTags( $changeTags );
 602                         $logId = $logEntry->insert();
 603                         $logEntry->publish( $logId );
 604                 }
 605
 606                 // Update *_from_namespace fields as needed
 607                 if ( $this->oldTitle->getNamespace() != $this->newTitle->getNamespace() ) {
 608                         $dbw->update( 'pagelinks',
 609                                 [ 'pl_from_namespace' => $this->newTitle->getNamespace() ],
 610                                 [ 'pl_from' => $pageid ],
 611                                 __METHOD__
 612                         );
 613                         $dbw->update( 'templatelinks',
 614                                 [ 'tl_from_namespace' => $this->newTitle->getNamespace() ],
 615                                 [ 'tl_from' => $pageid ],
 616                                 __METHOD__
 617                         );
 618                         $dbw->update( 'imagelinks',
 619                                 [ 'il_from_namespace' => $this->newTitle->getNamespace() ],
 620                                 [ 'il_from' => $pageid ],
 621                                 __METHOD__
 622                         );
 623                 }
 624
 625                 # Update watchlists
 626                 $oldtitle = $this->oldTitle->getDBkey();
 627                 $newtitle = $this->newTitle->getDBkey();
 628                 $oldsnamespace = $this->nsInfo->getSubject( $this->oldTitle->getNamespace() );
 629                 $newsnamespace = $this->nsInfo->getSubject( $this->newTitle->getNamespace() );
 630                 if ( $oldsnamespace != $newsnamespace || $oldtitle != $newtitle ) {
 631                         $this->watchedItems->duplicateAllAssociatedEntries( $this->oldTitle, $this->newTitle );
 632                 }
 633
 634                 // If it is a file then move it last.
 635                 // This is done after all database changes so that file system errors cancel the transaction.
 636                 if ( $this->oldTitle->getNamespace() == NS_FILE ) {
 637                         $status = $this->moveFile( $this->oldTitle, $this->newTitle );
 638                         if ( !$status->isOK() ) {
 639                                 $dbw->cancelAtomic( __METHOD__ );
 640                                 return $status;
 641                         }
 642                 }
 643
 644                 Hooks::run(
 645                         'TitleMoveCompleting',
 646                         [ $this->oldTitle, $this->newTitle,
 647                                 $user, $pageid, $redirid, $reason, $nullRevision ]
 648                 );
 649
 650                 $dbw->endAtomic( __METHOD__ );
 651
 652                 $params = [
 653                         &$this->oldTitle,
 654                         &$this->newTitle,
 655                         &$user,
 656                         $pageid,
 657                         $redirid,
 658                         $reason,
 659                         $nullRevision
 660                 ];
 661                 // Keep each single hook handler atomic
 662                 DeferredUpdates::addUpdate(
 663                         new AtomicSectionUpdate(
 664                                 $dbw,
 665                                 __METHOD__,
 666                                 // Hold onto $user to avoid HHVM bug where it no longer
 667                                 // becomes a reference (T118683)
 668                                 function () use ( $params, &$user ) {
 669                                         Hooks::run( 'TitleMoveComplete', $params );
 670                                 }
 671                         )
 672                 );
 673
 674                 return Status::newGood();
 675         }
 676
 677         /**
 678          * Move a file associated with a page to a new location.
 679          * Can also be used to revert after a DB failure.
 680          *
 681          * @private
 682          * @param Title $oldTitle Old location to move the file from.
 683          * @param Title $newTitle New location to move the file to.
 684          * @return Status
 685          */
 686         private function moveFile( $oldTitle, $newTitle ) {
 687                 $status = Status::newFatal(
 688                         'cannotdelete',
 689                         $oldTitle->getPrefixedText()
 690                 );
 691
 692                 $file = $this->repoGroup->getLocalRepo()->newFile( $oldTitle );
 693                 $file->load( File::READ_LATEST );
 694                 if ( $file->exists() ) {
 695                         $status = $file->move( $newTitle );
 696                 }
 697
 698                 // Clear RepoGroup process cache
 699                 $this->repoGroup->clearCache( $oldTitle );
 700                 $this->repoGroup->clearCache( $newTitle ); # clear false negative cache
 701                 return $status;
 702         }
 703
 704         /**
 705          * Move page to a title which is either a redirect to the
 706          * source page or nonexistent
 707          *
 708          * @todo This was basically directly moved from Title, it should be split into
 709          *   smaller functions
 710          * @param User $user the User doing the move
 711          * @param Title $nt The page to move to, which should be a redirect or non-existent
 712          * @param string $reason The reason for the move
 713          * @param bool $createRedirect Whether to leave a redirect at the old title. Does not check
 714          *   if the user has the suppressredirect right
 715          * @param string[] $changeTags Change tags to apply to the entry in the move log
 716          * @return Revision the revision created by the move
 717          * @throws MWException
 718          */
 719         private function moveToInternal( User $user, &$nt, $reason = '', $createRedirect = true,
 720                 array $changeTags = []
 721         ) {
 722                 if ( $nt->exists() ) {
 723                         $moveOverRedirect = true;
 724                         $logType = 'move_redir';
 725                 } else {
 726                         $moveOverRedirect = false;
 727                         $logType = 'move';
 728                 }
 729
 730                 if ( $moveOverRedirect ) {
 731                         $overwriteMessage = wfMessage(
 732                                         'delete_and_move_reason',
 733                                         $this->oldTitle->getPrefixedText()
 734                                 )->inContentLanguage()->text();
 735                         $newpage = WikiPage::factory( $nt );
 736                         $errs = [];
 737                         $status = $newpage->doDeleteArticleReal(
 738                                 $overwriteMessage,
 739                                 /* $suppress */ false,
 740                                 $nt->getArticleID(),
 741                                 /* $commit */ false,
 742                                 $errs,
 743                                 $user,
 744                                 $changeTags,
 745                                 'delete_redir'
 746                         );
 747
 748                         if ( !$status->isGood() ) {
 749                                 throw new MWException( 'Failed to delete page-move revision: '
 750                                         . $status->getWikiText( false, false, 'en' ) );
 751                         }
 752
 753                         $nt->resetArticleID( false );
 754                 }
 755
 756                 if ( $createRedirect ) {
 757                         if ( $this->oldTitle->getNamespace() == NS_CATEGORY
 758                                 && !wfMessage( 'category-move-redirect-override' )->inContentLanguage()->isDisabled()
 759                         ) {
 760                                 $redirectContent = new WikitextContent(
 761                                         wfMessage( 'category-move-redirect-override' )
 762                                                 ->params( $nt->getPrefixedText() )->inContentLanguage()->plain() );
 763                         } else {
 764                                 $contentHandler = ContentHandler::getForTitle( $this->oldTitle );
 765                                 $redirectContent = $contentHandler->makeRedirectContent( $nt,
 766                                         wfMessage( 'move-redirect-text' )->inContentLanguage()->plain() );
 767                         }
 768
 769                         // NOTE: If this page's content model does not support redirects, $redirectContent will be null.
 770                 } else {
 771                         $redirectContent = null;
 772                 }
 773
 774                 // Figure out whether the content model is no longer the default
 775                 $oldDefault = ContentHandler::getDefaultModelFor( $this->oldTitle );
 776                 $contentModel = $this->oldTitle->getContentModel();
 777                 $newDefault = ContentHandler::getDefaultModelFor( $nt );
 778                 $defaultContentModelChanging = ( $oldDefault !== $newDefault
 779                         && $oldDefault === $contentModel );
 780
 781                 // T59084: log_page should be the ID of the *moved* page
 782                 $oldid = $this->oldTitle->getArticleID();
 783                 $logTitle = clone $this->oldTitle;
 784
 785                 $logEntry = new ManualLogEntry( 'move', $logType );
 786                 $logEntry->setPerformer( $user );
 787                 $logEntry->setTarget( $logTitle );
 788                 $logEntry->setComment( $reason );
 789                 $logEntry->setParameters( [
 790                         '4::target' => $nt->getPrefixedText(),
 791                         '5::noredir' => $redirectContent ? '0' : '1',
 792                 ] );
 793
 794                 $formatter = LogFormatter::newFromEntry( $logEntry );
 795                 $formatter->setContext( RequestContext::newExtraneousContext( $this->oldTitle ) );
 796                 $comment = $formatter->getPlainActionText();
 797                 if ( $reason ) {
 798                         $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 799                 }
 800
 801                 $dbw = $this->loadBalancer->getConnection( DB_MASTER );
 802
 803                 $oldpage = WikiPage::factory( $this->oldTitle );
 804                 $oldcountable = $oldpage->isCountable();
 805
 806                 $newpage = WikiPage::factory( $nt );
 807
 808                 # Change the name of the target page:
 809                 $dbw->update( 'page',
 810                         /* SET */ [
 811                                 'page_namespace' => $nt->getNamespace(),
 812                                 'page_title' => $nt->getDBkey(),
 813                         ],
 814                         /* WHERE */ [ 'page_id' => $oldid ],
 815                         __METHOD__
 816                 );
 817
 818                 # Save a null revision in the page's history notifying of the move
 819                 $nullRevision = Revision::newNullRevision( $dbw, $oldid, $comment, true, $user );
 820                 if ( !is_object( $nullRevision ) ) {
 821                         throw new MWException( 'Failed to create null revision while moving page ID '
 822                                 . $oldid . ' to ' . $nt->getPrefixedDBkey() );
 823                 }
 824
 825                 $nullRevId = $nullRevision->insertOn( $dbw );
 826                 $logEntry->setAssociatedRevId( $nullRevId );
 827
 828                 /**
 829                  * T163966
 830                  * Increment user_editcount during page moves
 831                  * Moved from SpecialMovepage.php per T195550
 832                  */
 833                 $user->incEditCount();
 834
 835                 if ( !$redirectContent ) {
 836                         // Clean up the old title *before* reset article id - T47348
 837                         WikiPage::onArticleDelete( $this->oldTitle );
 838                 }
 839
 840                 $this->oldTitle->resetArticleID( 0 ); // 0 == non existing
 841                 $nt->resetArticleID( $oldid );
 842                 $newpage->loadPageData( WikiPage::READ_LOCKING ); // T48397
 843
 844                 $newpage->updateRevisionOn( $dbw, $nullRevision );
 845
 846                 Hooks::run( 'NewRevisionFromEditComplete',
 847                         [ $newpage, $nullRevision, $nullRevision->getParentId(), $user ] );
 848
 849                 $newpage->doEditUpdates( $nullRevision, $user,
 850                         [ 'changed' => false, 'moved' => true, 'oldcountable' => $oldcountable ] );
 851
 852                 // If the default content model changes, we need to populate rev_content_model
 853                 if ( $defaultContentModelChanging ) {
 854                         $dbw->update(
 855                                 'revision',
 856                                 [ 'rev_content_model' => $contentModel ],
 857                                 [ 'rev_page' => $nt->getArticleID(), 'rev_content_model IS NULL' ],
 858                                 __METHOD__
 859                         );
 860                 }
 861
 862                 WikiPage::onArticleCreate( $nt );
 863
 864                 # Recreate the redirect, this time in the other direction.
 865                 if ( $redirectContent ) {
 866                         $redirectArticle = WikiPage::factory( $this->oldTitle );
 867                         $redirectArticle->loadFromRow( false, WikiPage::READ_LOCKING ); // T48397
 868                         $newid = $redirectArticle->insertOn( $dbw );
 869                         if ( $newid ) { // sanity
 870                                 $this->oldTitle->resetArticleID( $newid );
 871                                 $redirectRevision = new Revision( [
 872                                         'title' => $this->oldTitle, // for determining the default content model
 873                                         'page' => $newid,
 874                                         'user_text' => $user->getName(),
 875                                         'user' => $user->getId(),
 876                                         'comment' => $comment,
 877                                         'content' => $redirectContent ] );
 878                                 $redirectRevId = $redirectRevision->insertOn( $dbw );
 879                                 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
 880
 881                                 Hooks::run( 'NewRevisionFromEditComplete',
 882                                         [ $redirectArticle, $redirectRevision, false, $user ] );
 883
 884                                 $redirectArticle->doEditUpdates( $redirectRevision, $user, [ 'created' => true ] );
 885
 886                                 // make a copy because of log entry below
 887                                 $redirectTags = $changeTags;
 888                                 if ( in_array( 'mw-new-redirect', ChangeTags::getSoftwareTags() ) ) {
 889                                         $redirectTags[] = 'mw-new-redirect';
 890                                 }
 891                                 ChangeTags::addTags( $redirectTags, null, $redirectRevId, null );
 892                         }
 893                 }
 894
 895                 # Log the move
 896                 $logid = $logEntry->insert();
 897
 898                 $logEntry->addTags( $changeTags );
 899                 $logEntry->publish( $logid );
 900
 901                 return $nullRevision;
 902         }
 903 }