includes/specials/SpecialMovepage.php

   1 <?php
   2 /**
   3  * Implements Special:Movepage
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 use MediaWiki\MediaWikiServices;
  25
  26 /**
  27  * A special page that allows users to change page titles
  28  *
  29  * @ingroup SpecialPage
  30  */
  31 class MovePageForm extends UnlistedSpecialPage {
  32         /** @var Title */
  33         protected $oldTitle = null;
  34
  35         /** @var Title */
  36         protected $newTitle;
  37
  38         /** @var string Text input */
  39         protected $reason;
  40
  41         // Checks
  42
  43         /** @var bool */
  44         protected $moveTalk;
  45
  46         /** @var bool */
  47         protected $deleteAndMove;
  48
  49         /** @var bool */
  50         protected $moveSubpages;
  51
  52         /** @var bool */
  53         protected $fixRedirects;
  54
  55         /** @var bool */
  56         protected $leaveRedirect;
  57
  58         /** @var bool */
  59         protected $moveOverShared;
  60
  61         private $watch = false;
  62
  63         public function __construct() {
  64                 parent::__construct( 'Movepage' );
  65         }
  66
  67         public function doesWrites() {
  68                 return true;
  69         }
  70
  71         public function execute( $par ) {
  72                 $this->useTransactionalTimeLimit();
  73
  74                 $this->checkReadOnly();
  75
  76                 $this->setHeaders();
  77                 $this->outputHeader();
  78
  79                 $request = $this->getRequest();
  80                 $target = $par ?? $request->getVal( 'target' );
  81
  82                 // Yes, the use of getVal() and getText() is wanted, see T22365
  83
  84                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  85                 $this->oldTitle = Title::newFromText( $oldTitleText );
  86
  87                 if ( !$this->oldTitle ) {
  88                         // Either oldTitle wasn't passed, or newFromText returned null
  89                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  90                 }
  91                 if ( !$this->oldTitle->exists() ) {
  92                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  93                 }
  94
  95                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  96                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  97                 // Backwards compatibility for forms submitting here from other sources
  98                 // which is more common than it should be..
  99                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
 100                 $this->newTitle = strlen( $newTitleText_bc ) > 0
 101                         ? Title::newFromText( $newTitleText_bc )
 102                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
 103
 104                 $user = $this->getUser();
 105
 106                 # Check rights
 107                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
 108                 if ( count( $permErrors ) ) {
 109                         // Auto-block user's IP if the account was "hard" blocked
 110                         DeferredUpdates::addCallableUpdate( function () use ( $user ) {
 111                                 $user->spreadAnyEditBlock();
 112                         } );
 113                         throw new PermissionsError( 'move', $permErrors );
 114                 }
 115
 116                 $def = !$request->wasPosted();
 117
 118                 $this->reason = $request->getText( 'wpReason' );
 119                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
 120                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
 121                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
 122                 $this->moveSubpages = $request->getBool( 'wpMovesubpages' );
 123                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' );
 124                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile' );
 125                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
 126
 127                 if ( $request->getVal( 'action' ) == 'submit' && $request->wasPosted()
 128                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
 129                 ) {
 130                         $this->doSubmit();
 131                 } else {
 132                         $this->showForm( [] );
 133                 }
 134         }
 135
 136         /**
 137          * Show the form
 138          *
 139          * @param array $err Error messages. Each item is an error message.
 140          *    It may either be a string message name or array message name and
 141          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 142          * @param bool $isPermError Whether the error message is about user permissions.
 143          */
 144         function showForm( $err, $isPermError = false ) {
 145                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 146
 147                 $out = $this->getOutput();
 148                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 149                 $out->addModuleStyles( 'mediawiki.special' );
 150                 $out->addModules( 'mediawiki.misc-authed-ooui' );
 151                 $this->addHelpLink( 'Help:Moving a page' );
 152
 153                 $handlerSupportsRedirects = ContentHandler::getForTitle( $this->oldTitle )
 154                         ->supportsRedirects();
 155
 156                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 157                         $out->addWikiMsg( 'movepagetext' );
 158                 } else {
 159                         $out->addWikiMsg( $handlerSupportsRedirects ?
 160                                 'movepagetext-noredirectfixer' :
 161                                 'movepagetext-noredirectsupport' );
 162                 }
 163
 164                 if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 165                         $out->wrapWikiMsg(
 166                                 "<div class=\"warningbox mw-moveuserpage-warning\">\n$1\n</div>",
 167                                 'moveuserpage-warning'
 168                         );
 169                 } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 170                         $out->wrapWikiMsg(
 171                                 "<div class=\"warningbox mw-movecategorypage-warning\">\n$1\n</div>",
 172                                 'movecategorypage-warning'
 173                         );
 174                 }
 175
 176                 $deleteAndMove = false;
 177                 $moveOverShared = false;
 178
 179                 $user = $this->getUser();
 180
 181                 $newTitle = $this->newTitle;
 182
 183                 if ( !$newTitle ) {
 184                         # Show the current title as a default
 185                         # when the form is first opened.
 186                         $newTitle = $this->oldTitle;
 187                 } elseif ( !count( $err ) ) {
 188                         # If a title was supplied, probably from the move log revert
 189                         # link, check for validity. We can then show some diagnostic
 190                         # information and save a click.
 191                         $mp = new MovePage( $this->oldTitle, $newTitle );
 192                         $status = $mp->isValidMove();
 193                         $status->merge( $mp->checkPermissions( $user, null ) );
 194                         if ( $status->getErrors() ) {
 195                                 $err = $status->getErrorsArray();
 196                         }
 197                 }
 198
 199                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 200                         && MediaWikiServices::getInstance()->getPermissionManager()
 201                                  ->quickUserCan( 'delete', $user, $newTitle )
 202                 ) {
 203                         $out->wrapWikiMsg(
 204                                 "<div class='warningbox'>\n$1\n</div>\n",
 205                                 [ 'delete_and_move_text', $newTitle->getPrefixedText() ]
 206                         );
 207                         $deleteAndMove = true;
 208                         $err = [];
 209                 }
 210
 211                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 212                         && MediaWikiServices::getInstance()
 213                                  ->getPermissionManager()
 214                                  ->userHasRight( $user, 'reupload-shared' )
 215                 ) {
 216                         $out->wrapWikiMsg(
 217                                 "<div class='warningbox'>\n$1\n</div>\n",
 218                                 [
 219                                         'move-over-sharedrepo',
 220                                         $newTitle->getPrefixedText()
 221                                 ]
 222                         );
 223                         $moveOverShared = true;
 224                         $err = [];
 225                 }
 226
 227                 $oldTalk = $this->oldTitle->getTalkPage();
 228                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 229                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 230
 231                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 232                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 233
 234                 # We also want to be able to move assoc. subpage talk-pages even if base page
 235                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 236                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 237                         ( $oldTalk->exists()
 238                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 239
 240                 $dbr = wfGetDB( DB_REPLICA );
 241                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 242                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 243                                 [
 244                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 245                                         'rd_title' => $this->oldTitle->getDBkey(),
 246                                 ], __METHOD__ );
 247                 } else {
 248                         $hasRedirects = false;
 249                 }
 250
 251                 if ( count( $err ) ) {
 252                         if ( $isPermError ) {
 253                                 $action_desc = $this->msg( 'action-move' )->plain();
 254                                 $errMsgHtml = $this->msg( 'permissionserrorstext-withaction',
 255                                         count( $err ), $action_desc )->parseAsBlock();
 256                         } else {
 257                                 $errMsgHtml = $this->msg( 'cannotmove', count( $err ) )->parseAsBlock();
 258                         }
 259
 260                         if ( count( $err ) == 1 ) {
 261                                 $errMsg = $err[0];
 262                                 $errMsgName = array_shift( $errMsg );
 263
 264                                 if ( $errMsgName == 'hookaborted' ) {
 265                                         $errMsgHtml .= "<p>{$errMsg[0]}</p>\n";
 266                                 } else {
 267                                         $errMsgHtml .= $this->msg( $errMsgName, $errMsg )->parseAsBlock();
 268                                 }
 269                         } else {
 270                                 $errStr = [];
 271
 272                                 foreach ( $err as $errMsg ) {
 273                                         if ( $errMsg[0] == 'hookaborted' ) {
 274                                                 $errStr[] = $errMsg[1];
 275                                         } else {
 276                                                 $errMsgName = array_shift( $errMsg );
 277                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 278                                         }
 279                                 }
 280
 281                                 $errMsgHtml .= '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n";
 282                         }
 283                         $out->addHTML( Html::errorBox( $errMsgHtml ) );
 284                 }
 285
 286                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 287                         # Is the title semi-protected?
 288                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 289                                 $noticeMsg = 'semiprotectedpagemovewarning';
 290                         } else {
 291                                 # Then it must be protected based on static groups (regular)
 292                                 $noticeMsg = 'protectedpagemovewarning';
 293                         }
 294                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 295                         $out->addWikiMsg( $noticeMsg );
 296                         LogEventsList::showLogExtract(
 297                                 $out,
 298                                 'protect',
 299                                 $this->oldTitle,
 300                                 '',
 301                                 [ 'lim' => 1 ]
 302                         );
 303                         $out->addHTML( "</div>\n" );
 304                 }
 305
 306                 // Length limit for wpReason and wpNewTitleMain is enforced in the
 307                 // mediawiki.special.movePage module
 308
 309                 $immovableNamespaces = [];
 310                 $namespaceInfo = MediaWikiServices::getInstance()->getNamespaceInfo();
 311                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 312                         if ( !$namespaceInfo->isMovable( $nsId ) ) {
 313                                 $immovableNamespaces[] = $nsId;
 314                         }
 315                 }
 316
 317                 $out->enableOOUI();
 318                 $fields = [];
 319
 320                 $fields[] = new OOUI\FieldLayout(
 321                         new MediaWiki\Widget\ComplexTitleInputWidget( [
 322                                 'id' => 'wpNewTitle',
 323                                 'namespace' => [
 324                                         'id' => 'wpNewTitleNs',
 325                                         'name' => 'wpNewTitleNs',
 326                                         'value' => $newTitle->getNamespace(),
 327                                         'exclude' => $immovableNamespaces,
 328                                 ],
 329                                 'title' => [
 330                                         'id' => 'wpNewTitleMain',
 331                                         'name' => 'wpNewTitleMain',
 332                                         'value' => $newTitle->getText(),
 333                                         // Inappropriate, since we're expecting the user to input a non-existent page's title
 334                                         'suggestions' => false,
 335                                 ],
 336                                 'infusable' => true,
 337                         ] ),
 338                         [
 339                                 'label' => $this->msg( 'newtitle' )->text(),
 340                                 'align' => 'top',
 341                         ]
 342                 );
 343
 344                 // HTML maxlength uses "UTF-16 code units", which means that characters outside BMP
 345                 // (e.g. emojis) count for two each. This limit is overridden in JS to instead count
 346                 // Unicode codepoints.
 347                 $fields[] = new OOUI\FieldLayout(
 348                         new OOUI\TextInputWidget( [
 349                                 'name' => 'wpReason',
 350                                 'id' => 'wpReason',
 351                                 'maxLength' => CommentStore::COMMENT_CHARACTER_LIMIT,
 352                                 'infusable' => true,
 353                                 'value' => $this->reason,
 354                         ] ),
 355                         [
 356                                 'label' => $this->msg( 'movereason' )->text(),
 357                                 'align' => 'top',
 358                         ]
 359                 );
 360
 361                 if ( $considerTalk ) {
 362                         $fields[] = new OOUI\FieldLayout(
 363                                 new OOUI\CheckboxInputWidget( [
 364                                         'name' => 'wpMovetalk',
 365                                         'id' => 'wpMovetalk',
 366                                         'value' => '1',
 367                                         'selected' => $this->moveTalk,
 368                                 ] ),
 369                                 [
 370                                         'label' => $this->msg( 'movetalk' )->text(),
 371                                         'help' => new OOUI\HtmlSnippet( $this->msg( 'movepagetalktext' )->parseAsBlock() ),
 372                                         'helpInline' => true,
 373                                         'align' => 'inline',
 374                                         'id' => 'wpMovetalk-field',
 375                                 ]
 376                         );
 377                 }
 378
 379                 if ( MediaWikiServices::getInstance()
 380                                 ->getPermissionManager()
 381                                 ->userHasRight( $user, 'suppressredirect' )
 382                 ) {
 383                         if ( $handlerSupportsRedirects ) {
 384                                 $isChecked = $this->leaveRedirect;
 385                                 $isDisabled = false;
 386                         } else {
 387                                 $isChecked = false;
 388                                 $isDisabled = true;
 389                         }
 390                         $fields[] = new OOUI\FieldLayout(
 391                                 new OOUI\CheckboxInputWidget( [
 392                                         'name' => 'wpLeaveRedirect',
 393                                         'id' => 'wpLeaveRedirect',
 394                                         'value' => '1',
 395                                         'selected' => $isChecked,
 396                                         'disabled' => $isDisabled,
 397                                 ] ),
 398                                 [
 399                                         'label' => $this->msg( 'move-leave-redirect' )->text(),
 400                                         'align' => 'inline',
 401                                 ]
 402                         );
 403                 }
 404
 405                 if ( $hasRedirects ) {
 406                         $fields[] = new OOUI\FieldLayout(
 407                                 new OOUI\CheckboxInputWidget( [
 408                                         'name' => 'wpFixRedirects',
 409                                         'id' => 'wpFixRedirects',
 410                                         'value' => '1',
 411                                         'selected' => $this->fixRedirects,
 412                                 ] ),
 413                                 [
 414                                         'label' => $this->msg( 'fix-double-redirects' )->text(),
 415                                         'align' => 'inline',
 416                                 ]
 417                         );
 418                 }
 419
 420                 if ( $canMoveSubpage ) {
 421                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 422                         $fields[] = new OOUI\FieldLayout(
 423                                 new OOUI\CheckboxInputWidget( [
 424                                         'name' => 'wpMovesubpages',
 425                                         'id' => 'wpMovesubpages',
 426                                         'value' => '1',
 427                                         'selected' => true, // T222953 Always check the box
 428                                 ] ),
 429                                 [
 430                                         'label' => new OOUI\HtmlSnippet(
 431                                                 $this->msg(
 432                                                         ( $this->oldTitle->hasSubpages()
 433                                                                 ? 'move-subpages'
 434                                                                 : 'move-talk-subpages' )
 435                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 436                                         ),
 437                                         'align' => 'inline',
 438                                 ]
 439                         );
 440                 }
 441
 442                 # Don't allow watching if user is not logged in
 443                 if ( $user->isLoggedIn() ) {
 444                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 445                                 || $user->isWatched( $this->oldTitle ) );
 446                         $fields[] = new OOUI\FieldLayout(
 447                                 new OOUI\CheckboxInputWidget( [
 448                                         'name' => 'wpWatch',
 449                                         'id' => 'watch', # ew
 450                                         'value' => '1',
 451                                         'selected' => $watchChecked,
 452                                 ] ),
 453                                 [
 454                                         'label' => $this->msg( 'move-watch' )->text(),
 455                                         'align' => 'inline',
 456                                 ]
 457                         );
 458                 }
 459
 460                 $hiddenFields = '';
 461                 if ( $moveOverShared ) {
 462                         $hiddenFields .= Html::hidden( 'wpMoveOverSharedFile', '1' );
 463                 }
 464
 465                 if ( $deleteAndMove ) {
 466                         $fields[] = new OOUI\FieldLayout(
 467                                 new OOUI\CheckboxInputWidget( [
 468                                         'name' => 'wpDeleteAndMove',
 469                                         'id' => 'wpDeleteAndMove',
 470                                         'value' => '1',
 471                                 ] ),
 472                                 [
 473                                         'label' => $this->msg( 'delete_and_move_confirm' )->text(),
 474                                         'align' => 'inline',
 475                                 ]
 476                         );
 477                 }
 478
 479                 $fields[] = new OOUI\FieldLayout(
 480                         new OOUI\ButtonInputWidget( [
 481                                 'name' => 'wpMove',
 482                                 'value' => $this->msg( 'movepagebtn' )->text(),
 483                                 'label' => $this->msg( 'movepagebtn' )->text(),
 484                                 'flags' => [ 'primary', 'progressive' ],
 485                                 'type' => 'submit',
 486                         ] ),
 487                         [
 488                                 'align' => 'top',
 489                         ]
 490                 );
 491
 492                 $fieldset = new OOUI\FieldsetLayout( [
 493                         'label' => $this->msg( 'move-page-legend' )->text(),
 494                         'id' => 'mw-movepage-table',
 495                         'items' => $fields,
 496                 ] );
 497
 498                 $form = new OOUI\FormLayout( [
 499                         'method' => 'post',
 500                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 501                         'id' => 'movepage',
 502                 ] );
 503                 $form->appendContent(
 504                         $fieldset,
 505                         new OOUI\HtmlSnippet(
 506                                 $hiddenFields .
 507                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 508                                 Html::hidden( 'wpEditToken', $user->getEditToken() )
 509                         )
 510                 );
 511
 512                 $out->addHTML(
 513                         new OOUI\PanelLayout( [
 514                                 'classes' => [ 'movepage-wrapper' ],
 515                                 'expanded' => false,
 516                                 'padded' => true,
 517                                 'framed' => true,
 518                                 'content' => $form,
 519                         ] )
 520                 );
 521
 522                 $this->showLogFragment( $this->oldTitle );
 523                 $this->showSubpages( $this->oldTitle );
 524         }
 525
 526         function doSubmit() {
 527                 $user = $this->getUser();
 528                 $permissionManager = MediaWikiServices::getInstance()->getPermissionManager();
 529
 530                 if ( $user->pingLimiter( 'move' ) ) {
 531                         throw new ThrottledError;
 532                 }
 533
 534                 $ot = $this->oldTitle;
 535                 $nt = $this->newTitle;
 536
 537                 # don't allow moving to pages with # in
 538                 if ( !$nt || $nt->hasFragment() ) {
 539                         $this->showForm( [ [ 'badtitletext' ] ] );
 540
 541                         return;
 542                 }
 543
 544                 $services = MediaWikiServices::getInstance();
 545
 546                 # Show a warning if the target file exists on a shared repo
 547                 $repoGroup = $services->getRepoGroup();
 548                 if ( $nt->getNamespace() == NS_FILE
 549                         && !( $this->moveOverShared && $permissionManager->userHasRight( $user, 'reupload-shared' ) )
 550                         && !$repoGroup->getLocalRepo()->findFile( $nt )
 551                         && $repoGroup->findFile( $nt )
 552                 ) {
 553                         $this->showForm( [ [ 'file-exists-sharedrepo' ] ] );
 554
 555                         return;
 556                 }
 557
 558                 # Delete to make way if requested
 559                 if ( $this->deleteAndMove ) {
 560                         $permErrors = $permissionManager->getPermissionErrors( 'delete', $user, $nt );
 561                         if ( count( $permErrors ) ) {
 562                                 # Only show the first error
 563                                 $this->showForm( $permErrors, true );
 564
 565                                 return;
 566                         }
 567
 568                         $page = WikiPage::factory( $nt );
 569
 570                         // Small safety margin to guard against concurrent edits
 571                         if ( $page->isBatchedDelete( 5 ) ) {
 572                                 $this->showForm( [ [ 'movepage-delete-first' ] ] );
 573
 574                                 return;
 575                         }
 576
 577                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 578
 579                         // Delete an associated image if there is
 580                         if ( $nt->getNamespace() == NS_FILE ) {
 581                                 $file = $repoGroup->getLocalRepo()->newFile( $nt );
 582                                 $file->load( File::READ_LATEST );
 583                                 if ( $file->exists() ) {
 584                                         $file->delete( $reason, false, $user );
 585                                 }
 586                         }
 587
 588                         $error = ''; // passed by ref
 589                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 590                         if ( !$deleteStatus->isGood() ) {
 591                                 $this->showForm( $deleteStatus->getErrorsArray() );
 592
 593                                 return;
 594                         }
 595                 }
 596
 597                 $handler = ContentHandler::getForTitle( $ot );
 598
 599                 if ( !$handler->supportsRedirects() ) {
 600                         $createRedirect = false;
 601                 } elseif ( $permissionManager->userHasRight( $user, 'suppressredirect' ) ) {
 602                         $createRedirect = $this->leaveRedirect;
 603                 } else {
 604                         $createRedirect = true;
 605                 }
 606
 607                 # Do the actual move.
 608                 $mp = new MovePage( $ot, $nt );
 609
 610                 # check whether the requested actions are permitted / possible
 611                 $userPermitted = $mp->checkPermissions( $user, $this->reason )->isOK();
 612                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 613                         $this->moveTalk = false;
 614                 }
 615                 if ( $this->moveSubpages ) {
 616                         $this->moveSubpages = $permissionManager->userCan( 'move-subpages', $user, $ot );
 617                 }
 618
 619                 $status = $mp->moveIfAllowed( $user, $this->reason, $createRedirect );
 620                 if ( !$status->isOK() ) {
 621                         $this->showForm( $status->getErrorsArray(), !$userPermitted );
 622                         return;
 623                 }
 624
 625                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 626                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 627                 }
 628
 629                 $out = $this->getOutput();
 630                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 631
 632                 $linkRenderer = $this->getLinkRenderer();
 633                 $oldLink = $linkRenderer->makeLink(
 634                         $ot,
 635                         null,
 636                         [ 'id' => 'movepage-oldlink' ],
 637                         [ 'redirect' => 'no' ]
 638                 );
 639                 $newLink = $linkRenderer->makeKnownLink(
 640                         $nt,
 641                         null,
 642                         [ 'id' => 'movepage-newlink' ]
 643                 );
 644                 $oldText = $ot->getPrefixedText();
 645                 $newText = $nt->getPrefixedText();
 646
 647                 if ( $ot->exists() ) {
 648                         // NOTE: we assume that if the old title exists, it's because it was re-created as
 649                         // a redirect to the new title. This is not safe, but what we did before was
 650                         // even worse: we just determined whether a redirect should have been created,
 651                         // and reported that it was created if it should have, without any checks.
 652                         // Also note that isRedirect() is unreliable because of T39209.
 653                         $msgName = 'movepage-moved-redirect';
 654                 } else {
 655                         $msgName = 'movepage-moved-noredirect';
 656                 }
 657
 658                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 659                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 660                 $out->addWikiMsg( $msgName );
 661
 662                 // Avoid PHP 7.1 warning from passing $this by reference
 663                 $movePage = $this;
 664                 Hooks::run( 'SpecialMovepageAfterMove', [ &$movePage, &$ot, &$nt ] );
 665
 666                 /*
 667                  * Now we move extra pages we've been asked to move: subpages and talk
 668                  * pages.
 669                  *
 670                  * First, make a list of id's.  This might be marginally less efficient
 671                  * than a more direct method, but this is not a highly performance-cri-
 672                  * tical code path and readable code is more important here.
 673                  *
 674                  * If the target namespace doesn't allow subpages, moving with subpages
 675                  * would mean that you couldn't move them back in one operation, which
 676                  * is bad.
 677                  * @todo FIXME: A specific error message should be given in this case.
 678                  */
 679
 680                 // @todo FIXME: Use Title::moveSubpages() here
 681                 $nsInfo = $services->getNamespaceInfo();
 682                 $dbr = wfGetDB( DB_MASTER );
 683                 if ( $this->moveSubpages && (
 684                         $nsInfo->hasSubpages( $nt->getNamespace() ) || (
 685                                 $this->moveTalk
 686                                         && $nsInfo->hasSubpages( $nt->getTalkPage()->getNamespace() )
 687                         )
 688                 ) ) {
 689                         $conds = [
 690                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 691                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 692                         ];
 693                         $conds['page_namespace'] = [];
 694                         if ( $nsInfo->hasSubpages( $nt->getNamespace() ) ) {
 695                                 $conds['page_namespace'][] = $ot->getNamespace();
 696                         }
 697                         if ( $this->moveTalk &&
 698                                 $nsInfo->hasSubpages( $nt->getTalkPage()->getNamespace() )
 699                         ) {
 700                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 701                         }
 702                 } elseif ( $this->moveTalk ) {
 703                         $conds = [
 704                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 705                                 'page_title' => $ot->getDBkey()
 706                         ];
 707                 } else {
 708                         # Skip the query
 709                         $conds = null;
 710                 }
 711
 712                 $extraPages = [];
 713                 if ( !is_null( $conds ) ) {
 714                         $extraPages = TitleArray::newFromResult(
 715                                 $dbr->select( 'page',
 716                                         [ 'page_id', 'page_namespace', 'page_title' ],
 717                                         $conds,
 718                                         __METHOD__
 719                                 )
 720                         );
 721                 }
 722
 723                 $extraOutput = [];
 724                 $count = 1;
 725                 foreach ( $extraPages as $oldSubpage ) {
 726                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 727                                 # Already did this one.
 728                                 continue;
 729                         }
 730
 731                         $newPageName = preg_replace(
 732                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 733                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # T23234
 734                                 $oldSubpage->getDBkey()
 735                         );
 736
 737                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 738                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 739                                 $newNs = $nt->getNamespace();
 740                         } elseif ( $oldSubpage->isTalkPage() ) {
 741                                 $newNs = $nt->getTalkPage()->getNamespace();
 742                         } else {
 743                                 $newNs = $nt->getSubjectPage()->getNamespace();
 744                         }
 745
 746                         # T16385: we need makeTitleSafe because the new page names may
 747                         # be longer than 255 characters.
 748                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 749                         if ( !$newSubpage ) {
 750                                 $oldLink = $linkRenderer->makeKnownLink( $oldSubpage );
 751                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 752                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 753                                 continue;
 754                         }
 755
 756                         $mp = new MovePage( $oldSubpage, $newSubpage );
 757                         # This was copy-pasted from Renameuser, bleh.
 758                         if ( $newSubpage->exists() && !$mp->isValidMove()->isOK() ) {
 759                                 $link = $linkRenderer->makeKnownLink( $newSubpage );
 760                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 761                         } else {
 762                                 $status = $mp->moveIfAllowed( $user, $this->reason, $createRedirect );
 763
 764                                 if ( $status->isOK() ) {
 765                                         if ( $this->fixRedirects ) {
 766                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 767                                         }
 768                                         $oldLink = $linkRenderer->makeLink(
 769                                                 $oldSubpage,
 770                                                 null,
 771                                                 [],
 772                                                 [ 'redirect' => 'no' ]
 773                                         );
 774
 775                                         $newLink = $linkRenderer->makeKnownLink( $newSubpage );
 776                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 777                                                 ->rawParams( $oldLink, $newLink )->escaped();
 778                                         ++$count;
 779
 780                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 781                                         if ( $count >= $maximumMovedPages ) {
 782                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 783                                                         ->numParams( $maximumMovedPages )->escaped();
 784                                                 break;
 785                                         }
 786                                 } else {
 787                                         $oldLink = $linkRenderer->makeKnownLink( $oldSubpage );
 788                                         $newLink = $linkRenderer->makeLink( $newSubpage );
 789                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 790                                                 ->rawParams( $oldLink, $newLink )->escaped();
 791                                 }
 792                         }
 793                 }
 794
 795                 if ( $extraOutput !== [] ) {
 796                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 797                 }
 798
 799                 # Deal with watches (we don't watch subpages)
 800                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 801                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 802         }
 803
 804         function showLogFragment( $title ) {
 805                 $moveLogPage = new LogPage( 'move' );
 806                 $out = $this->getOutput();
 807                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 808                 LogEventsList::showLogExtract( $out, 'move', $title );
 809         }
 810
 811         /**
 812          * Show subpages of the page being moved. Section is not shown if both current
 813          * namespace does not support subpages and no talk subpages were found.
 814          *
 815          * @param Title $title Page being moved.
 816          */
 817         function showSubpages( $title ) {
 818                 $nsHasSubpages = MediaWikiServices::getInstance()->getNamespaceInfo()->
 819                         hasSubpages( $title->getNamespace() );
 820                 $subpages = $title->getSubpages();
 821                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 822
 823                 $titleIsTalk = $title->isTalkPage();
 824                 $subpagesTalk = $title->getTalkPage()->getSubpages();
 825                 $countTalk = $subpagesTalk instanceof TitleArray ? $subpagesTalk->count() : 0;
 826                 $totalCount = $count + $countTalk;
 827
 828                 if ( !$nsHasSubpages && $countTalk == 0 ) {
 829                         return;
 830                 }
 831
 832                 $this->getOutput()->wrapWikiMsg(
 833                         '== $1 ==',
 834                         [ 'movesubpage', ( $titleIsTalk ? $count : $totalCount ) ]
 835                 );
 836
 837                 if ( $nsHasSubpages ) {
 838                         $this->showSubpagesList( $subpages, $count, 'movesubpagetext', true );
 839                 }
 840
 841                 if ( !$titleIsTalk && $countTalk > 0 ) {
 842                         $this->showSubpagesList( $subpagesTalk, $countTalk, 'movesubpagetalktext' );
 843                 }
 844         }
 845
 846         function showSubpagesList( $subpages, $pagecount, $wikiMsg, $noSubpageMsg = false ) {
 847                 $out = $this->getOutput();
 848
 849                 # No subpages.
 850                 if ( $pagecount == 0 && $noSubpageMsg ) {
 851                         $out->addWikiMsg( 'movenosubpage' );
 852                         return;
 853                 }
 854
 855                 $out->addWikiMsg( $wikiMsg, $this->getLanguage()->formatNum( $pagecount ) );
 856                 $out->addHTML( "<ul>\n" );
 857
 858                 $linkBatch = new LinkBatch( $subpages );
 859                 $linkBatch->setCaller( __METHOD__ );
 860                 $linkBatch->execute();
 861                 $linkRenderer = $this->getLinkRenderer();
 862
 863                 foreach ( $subpages as $subpage ) {
 864                         $link = $linkRenderer->makeLink( $subpage );
 865                         $out->addHTML( "<li>$link</li>\n" );
 866                 }
 867                 $out->addHTML( "</ul>\n" );
 868         }
 869
 870         /**
 871          * Return an array of subpages beginning with $search that this special page will accept.
 872          *
 873          * @param string $search Prefix to search for
 874          * @param int $limit Maximum number of results to return (usually 10)
 875          * @param int $offset Number of results to skip (usually 0)
 876          * @return string[] Matching subpages
 877          */
 878         public function prefixSearchSubpages( $search, $limit, $offset ) {
 879                 return $this->prefixSearchString( $search, $limit, $offset );
 880         }
 881
 882         protected function getGroupName() {
 883                 return 'pagetools';
 884         }
 885 }