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 /**
  25  * A special page that allows users to change page titles
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class MovePageForm extends UnlistedSpecialPage {
  30         /** @var Title */
  31         protected $oldTitle = null;
  32
  33         /** @var Title */
  34         protected $newTitle;
  35
  36         /** @var string Text input */
  37         protected $reason;
  38
  39         // Checks
  40
  41         /** @var bool */
  42         protected $moveTalk;
  43
  44         /** @var bool */
  45         protected $deleteAndMove;
  46
  47         /** @var bool */
  48         protected $moveSubpages;
  49
  50         /** @var bool */
  51         protected $fixRedirects;
  52
  53         /** @var bool */
  54         protected $leaveRedirect;
  55
  56         /** @var bool */
  57         protected $moveOverShared;
  58
  59         private $watch = false;
  60
  61         public function __construct() {
  62                 parent::__construct( 'Movepage' );
  63         }
  64
  65         public function doesWrites() {
  66                 return true;
  67         }
  68
  69         public function execute( $par ) {
  70                 $this->useTransactionalTimeLimit();
  71
  72                 $this->checkReadOnly();
  73
  74                 $this->setHeaders();
  75                 $this->outputHeader();
  76
  77                 $request = $this->getRequest();
  78                 $target = !is_null( $par ) ? $par : $request->getVal( 'target' );
  79
  80                 // Yes, the use of getVal() and getText() is wanted, see T22365
  81
  82                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  83                 $this->oldTitle = Title::newFromText( $oldTitleText );
  84
  85                 if ( !$this->oldTitle ) {
  86                         // Either oldTitle wasn't passed, or newFromText returned null
  87                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  88                 }
  89                 if ( !$this->oldTitle->exists() ) {
  90                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  91                 }
  92
  93                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  94                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  95                 // Backwards compatibility for forms submitting here from other sources
  96                 // which is more common than it should be..
  97                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
  98                 $this->newTitle = strlen( $newTitleText_bc ) > 0
  99                         ? Title::newFromText( $newTitleText_bc )
 100                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
 101
 102                 $user = $this->getUser();
 103
 104                 # Check rights
 105                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
 106                 if ( count( $permErrors ) ) {
 107                         // Auto-block user's IP if the account was "hard" blocked
 108                         DeferredUpdates::addCallableUpdate( function () use ( $user ) {
 109                                 $user->spreadAnyEditBlock();
 110                         } );
 111                         throw new PermissionsError( 'move', $permErrors );
 112                 }
 113
 114                 $def = !$request->wasPosted();
 115
 116                 $this->reason = $request->getText( 'wpReason' );
 117                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
 118                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
 119                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
 120                 $this->moveSubpages = $request->getBool( 'wpMovesubpages' );
 121                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' );
 122                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile' );
 123                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
 124
 125                 if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
 126                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
 127                 ) {
 128                         $this->doSubmit();
 129                 } else {
 130                         $this->showForm( [] );
 131                 }
 132         }
 133
 134         /**
 135          * Show the form
 136          *
 137          * @param array $err Error messages. Each item is an error message.
 138          *    It may either be a string message name or array message name and
 139          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 140          */
 141         function showForm( $err ) {
 142                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 143
 144                 $out = $this->getOutput();
 145                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 146                 $out->addModules( 'mediawiki.special.movePage' );
 147                 $out->addModuleStyles( 'mediawiki.special.movePage.styles' );
 148                 $this->addHelpLink( 'Help:Moving a page' );
 149
 150                 $out->addWikiMsg( $this->getConfig()->get( 'FixDoubleRedirects' ) ?
 151                         'movepagetext' :
 152                         'movepagetext-noredirectfixer'
 153                 );
 154
 155                 if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 156                         $out->wrapWikiMsg(
 157                                 "<div class=\"warningbox mw-moveuserpage-warning\">\n$1\n</div>",
 158                                 'moveuserpage-warning'
 159                         );
 160                 } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 161                         $out->wrapWikiMsg(
 162                                 "<div class=\"warningbox mw-movecategorypage-warning\">\n$1\n</div>",
 163                                 'movecategorypage-warning'
 164                         );
 165                 }
 166
 167                 $deleteAndMove = false;
 168                 $moveOverShared = false;
 169
 170                 $newTitle = $this->newTitle;
 171
 172                 if ( !$newTitle ) {
 173                         # Show the current title as a default
 174                         # when the form is first opened.
 175                         $newTitle = $this->oldTitle;
 176                 } elseif ( !count( $err ) ) {
 177                         # If a title was supplied, probably from the move log revert
 178                         # link, check for validity. We can then show some diagnostic
 179                         # information and save a click.
 180                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 181                         if ( is_array( $newerr ) ) {
 182                                 $err = $newerr;
 183                         }
 184                 }
 185
 186                 $user = $this->getUser();
 187
 188                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 189                         && $newTitle->quickUserCan( 'delete', $user )
 190                 ) {
 191                         $out->wrapWikiMsg(
 192                                 "<div class='warningbox'>\n$1\n</div>\n",
 193                                 [ 'delete_and_move_text', $newTitle->getPrefixedText() ]
 194                         );
 195                         $deleteAndMove = true;
 196                         $err = [];
 197                 }
 198
 199                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 200                         && $user->isAllowed( 'reupload-shared' )
 201                 ) {
 202                         $out->wrapWikiMsg(
 203                                 "<div class='warningbox'>\n$1\n</div>\n",
 204                                 [
 205                                         'move-over-sharedrepo',
 206                                         $newTitle->getPrefixedText()
 207                                 ]
 208                         );
 209                         $moveOverShared = true;
 210                         $err = [];
 211                 }
 212
 213                 $oldTalk = $this->oldTitle->getTalkPage();
 214                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 215                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 216
 217                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 218                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 219
 220                 # We also want to be able to move assoc. subpage talk-pages even if base page
 221                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 222                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 223                         ( $oldTalk->exists()
 224                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 225
 226                 $dbr = wfGetDB( DB_REPLICA );
 227                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 228                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 229                                 [
 230                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 231                                         'rd_title' => $this->oldTitle->getDBkey(),
 232                                 ], __METHOD__ );
 233                 } else {
 234                         $hasRedirects = false;
 235                 }
 236
 237                 if ( count( $err ) ) {
 238                         $out->addHTML( "<div class='errorbox'>\n" );
 239                         $action_desc = $this->msg( 'action-move' )->plain();
 240                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 241
 242                         if ( count( $err ) == 1 ) {
 243                                 $errMsg = $err[0];
 244                                 $errMsgName = array_shift( $errMsg );
 245
 246                                 if ( $errMsgName == 'hookaborted' ) {
 247                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 248                                 } else {
 249                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 250                                 }
 251                         } else {
 252                                 $errStr = [];
 253
 254                                 foreach ( $err as $errMsg ) {
 255                                         if ( $errMsg[0] == 'hookaborted' ) {
 256                                                 $errStr[] = $errMsg[1];
 257                                         } else {
 258                                                 $errMsgName = array_shift( $errMsg );
 259                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 260                                         }
 261                                 }
 262
 263                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 264                         }
 265                         $out->addHTML( "</div>\n" );
 266                 }
 267
 268                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 269                         # Is the title semi-protected?
 270                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 271                                 $noticeMsg = 'semiprotectedpagemovewarning';
 272                                 $classes[] = 'mw-textarea-sprotected';
 273                         } else {
 274                                 # Then it must be protected based on static groups (regular)
 275                                 $noticeMsg = 'protectedpagemovewarning';
 276                                 $classes[] = 'mw-textarea-protected';
 277                         }
 278                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 279                         $out->addWikiMsg( $noticeMsg );
 280                         LogEventsList::showLogExtract(
 281                                 $out,
 282                                 'protect',
 283                                 $this->oldTitle,
 284                                 '',
 285                                 [ 'lim' => 1 ]
 286                         );
 287                         $out->addHTML( "</div>\n" );
 288                 }
 289
 290                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 291                 // is enforced in the mediawiki.special.movePage module
 292
 293                 $immovableNamespaces = [];
 294                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 295                         if ( !MWNamespace::isMovable( $nsId ) ) {
 296                                 $immovableNamespaces[] = $nsId;
 297                         }
 298                 }
 299
 300                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 301
 302                 $out->enableOOUI();
 303                 $fields = [];
 304
 305                 $fields[] = new OOUI\FieldLayout(
 306                         new MediaWiki\Widget\ComplexTitleInputWidget( [
 307                                 'id' => 'wpNewTitle',
 308                                 'namespace' => [
 309                                         'id' => 'wpNewTitleNs',
 310                                         'name' => 'wpNewTitleNs',
 311                                         'value' => $newTitle->getNamespace(),
 312                                         'exclude' => $immovableNamespaces,
 313                                 ],
 314                                 'title' => [
 315                                         'id' => 'wpNewTitleMain',
 316                                         'name' => 'wpNewTitleMain',
 317                                         'value' => $newTitle->getText(),
 318                                         // Inappropriate, since we're expecting the user to input a non-existent page's title
 319                                         'suggestions' => false,
 320                                 ],
 321                                 'infusable' => true,
 322                         ] ),
 323                         [
 324                                 'label' => $this->msg( 'newtitle' )->text(),
 325                                 'align' => 'top',
 326                         ]
 327                 );
 328
 329                 $fields[] = new OOUI\FieldLayout(
 330                         new OOUI\TextInputWidget( [
 331                                 'name' => 'wpReason',
 332                                 'id' => 'wpReason',
 333                                 'maxLength' => 200,
 334                                 'infusable' => true,
 335                                 'value' => $this->reason,
 336                         ] ),
 337                         [
 338                                 'label' => $this->msg( 'movereason' )->text(),
 339                                 'align' => 'top',
 340                         ]
 341                 );
 342
 343                 if ( $considerTalk ) {
 344                         $fields[] = new OOUI\FieldLayout(
 345                                 new OOUI\CheckboxInputWidget( [
 346                                         'name' => 'wpMovetalk',
 347                                         'id' => 'wpMovetalk',
 348                                         'value' => '1',
 349                                         'selected' => $this->moveTalk,
 350                                 ] ),
 351                                 [
 352                                         'label' => $this->msg( 'movetalk' )->text(),
 353                                         'help' => new OOUI\HtmlSnippet( $this->msg( 'movepagetalktext' )->parseAsBlock() ),
 354                                         'align' => 'inline',
 355                                         'infusable' => true,
 356                                         'id' => 'wpMovetalk-field',
 357                                 ]
 358                         );
 359                 }
 360
 361                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 362                         if ( $handler->supportsRedirects() ) {
 363                                 $isChecked = $this->leaveRedirect;
 364                                 $isDisabled = false;
 365                         } else {
 366                                 $isChecked = false;
 367                                 $isDisabled = true;
 368                         }
 369                         $fields[] = new OOUI\FieldLayout(
 370                                 new OOUI\CheckboxInputWidget( [
 371                                         'name' => 'wpLeaveRedirect',
 372                                         'id' => 'wpLeaveRedirect',
 373                                         'value' => '1',
 374                                         'selected' => $isChecked,
 375                                         'disabled' => $isDisabled,
 376                                 ] ),
 377                                 [
 378                                         'label' => $this->msg( 'move-leave-redirect' )->text(),
 379                                         'align' => 'inline',
 380                                 ]
 381                         );
 382                 }
 383
 384                 if ( $hasRedirects ) {
 385                         $fields[] = new OOUI\FieldLayout(
 386                                 new OOUI\CheckboxInputWidget( [
 387                                         'name' => 'wpFixRedirects',
 388                                         'id' => 'wpFixRedirects',
 389                                         'value' => '1',
 390                                         'selected' => $this->fixRedirects,
 391                                 ] ),
 392                                 [
 393                                         'label' => $this->msg( 'fix-double-redirects' )->text(),
 394                                         'align' => 'inline',
 395                                 ]
 396                         );
 397                 }
 398
 399                 if ( $canMoveSubpage ) {
 400                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 401                         $fields[] = new OOUI\FieldLayout(
 402                                 new OOUI\CheckboxInputWidget( [
 403                                         'name' => 'wpMovesubpages',
 404                                         'id' => 'wpMovesubpages',
 405                                         'value' => '1',
 406                                         # Don't check the box if we only have talk subpages to
 407                                         # move and we aren't moving the talk page.
 408                                         'selected' => $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 409                                 ] ),
 410                                 [
 411                                         'label' => new OOUI\HtmlSnippet(
 412                                                 $this->msg(
 413                                                         ( $this->oldTitle->hasSubpages()
 414                                                                 ? 'move-subpages'
 415                                                                 : 'move-talk-subpages' )
 416                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 417                                         ),
 418                                         'align' => 'inline',
 419                                 ]
 420                         );
 421                 }
 422
 423                 # Don't allow watching if user is not logged in
 424                 if ( $user->isLoggedIn() ) {
 425                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 426                                 || $user->isWatched( $this->oldTitle ) );
 427                         $fields[] = new OOUI\FieldLayout(
 428                                 new OOUI\CheckboxInputWidget( [
 429                                         'name' => 'wpWatch',
 430                                         'id' => 'watch', # ew
 431                                         'value' => '1',
 432                                         'selected' => $watchChecked,
 433                                 ] ),
 434                                 [
 435                                         'label' => $this->msg( 'move-watch' )->text(),
 436                                         'align' => 'inline',
 437                                 ]
 438                         );
 439                 }
 440
 441                 $hiddenFields = '';
 442                 if ( $moveOverShared ) {
 443                         $hiddenFields .= Html::hidden( 'wpMoveOverSharedFile', '1' );
 444                 }
 445
 446                 if ( $deleteAndMove ) {
 447                         $fields[] = new OOUI\FieldLayout(
 448                                 new OOUI\CheckboxInputWidget( [
 449                                         'name' => 'wpDeleteAndMove',
 450                                         'id' => 'wpDeleteAndMove',
 451                                         'value' => '1',
 452                                 ] ),
 453                                 [
 454                                         'label' => $this->msg( 'delete_and_move_confirm' )->text(),
 455                                         'align' => 'inline',
 456                                 ]
 457                         );
 458                 }
 459
 460                 $fields[] = new OOUI\FieldLayout(
 461                         new OOUI\ButtonInputWidget( [
 462                                 'name' => 'wpMove',
 463                                 'value' => $this->msg( 'movepagebtn' )->text(),
 464                                 'label' => $this->msg( 'movepagebtn' )->text(),
 465                                 'flags' => [ 'primary', 'progressive' ],
 466                                 'type' => 'submit',
 467                         ] ),
 468                         [
 469                                 'align' => 'top',
 470                         ]
 471                 );
 472
 473                 $fieldset = new OOUI\FieldsetLayout( [
 474                         'label' => $this->msg( 'move-page-legend' )->text(),
 475                         'id' => 'mw-movepage-table',
 476                         'items' => $fields,
 477                 ] );
 478
 479                 $form = new OOUI\FormLayout( [
 480                         'method' => 'post',
 481                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 482                         'id' => 'movepage',
 483                 ] );
 484                 $form->appendContent(
 485                         $fieldset,
 486                         new OOUI\HtmlSnippet(
 487                                 $hiddenFields .
 488                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 489                                 Html::hidden( 'wpEditToken', $user->getEditToken() )
 490                         )
 491                 );
 492
 493                 $out->addHTML(
 494                         new OOUI\PanelLayout( [
 495                                 'classes' => [ 'movepage-wrapper' ],
 496                                 'expanded' => false,
 497                                 'padded' => true,
 498                                 'framed' => true,
 499                                 'content' => $form,
 500                         ] )
 501                 );
 502
 503                 $this->showLogFragment( $this->oldTitle );
 504                 $this->showSubpages( $this->oldTitle );
 505         }
 506
 507         function doSubmit() {
 508                 $user = $this->getUser();
 509
 510                 if ( $user->pingLimiter( 'move' ) ) {
 511                         throw new ThrottledError;
 512                 }
 513
 514                 $ot = $this->oldTitle;
 515                 $nt = $this->newTitle;
 516
 517                 # don't allow moving to pages with # in
 518                 if ( !$nt || $nt->hasFragment() ) {
 519                         $this->showForm( [ [ 'badtitletext' ] ] );
 520
 521                         return;
 522                 }
 523
 524                 # Show a warning if the target file exists on a shared repo
 525                 if ( $nt->getNamespace() == NS_FILE
 526                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 527                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 528                         && wfFindFile( $nt )
 529                 ) {
 530                         $this->showForm( [ [ 'file-exists-sharedrepo' ] ] );
 531
 532                         return;
 533                 }
 534
 535                 # Delete to make way if requested
 536                 if ( $this->deleteAndMove ) {
 537                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 538                         if ( count( $permErrors ) ) {
 539                                 # Only show the first error
 540                                 $this->showForm( $permErrors );
 541
 542                                 return;
 543                         }
 544
 545                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 546
 547                         // Delete an associated image if there is
 548                         if ( $nt->getNamespace() == NS_FILE ) {
 549                                 $file = wfLocalFile( $nt );
 550                                 $file->load( File::READ_LATEST );
 551                                 if ( $file->exists() ) {
 552                                         $file->delete( $reason, false, $user );
 553                                 }
 554                         }
 555
 556                         $error = ''; // passed by ref
 557                         $page = WikiPage::factory( $nt );
 558                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 559                         if ( !$deleteStatus->isGood() ) {
 560                                 $this->showForm( $deleteStatus->getErrorsArray() );
 561
 562                                 return;
 563                         }
 564                 }
 565
 566                 $handler = ContentHandler::getForTitle( $ot );
 567
 568                 if ( !$handler->supportsRedirects() ) {
 569                         $createRedirect = false;
 570                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 571                         $createRedirect = $this->leaveRedirect;
 572                 } else {
 573                         $createRedirect = true;
 574                 }
 575
 576                 # Do the actual move.
 577                 $mp = new MovePage( $ot, $nt );
 578                 $valid = $mp->isValidMove();
 579                 if ( !$valid->isOK() ) {
 580                         $this->showForm( $valid->getErrorsArray() );
 581                         return;
 582                 }
 583
 584                 $permStatus = $mp->checkPermissions( $user, $this->reason );
 585                 if ( !$permStatus->isOK() ) {
 586                         $this->showForm( $permStatus->getErrorsArray() );
 587                         return;
 588                 }
 589
 590                 $status = $mp->move( $user, $this->reason, $createRedirect );
 591                 if ( !$status->isOK() ) {
 592                         $this->showForm( $status->getErrorsArray() );
 593                         return;
 594                 }
 595
 596                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 597                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 598                 }
 599
 600                 $out = $this->getOutput();
 601                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 602
 603                 $linkRenderer = $this->getLinkRenderer();
 604                 $oldLink = $linkRenderer->makeLink(
 605                         $ot,
 606                         null,
 607                         [ 'id' => 'movepage-oldlink' ],
 608                         [ 'redirect' => 'no' ]
 609                 );
 610                 $newLink = $linkRenderer->makeKnownLink(
 611                         $nt,
 612                         null,
 613                         [ 'id' => 'movepage-newlink' ]
 614                 );
 615                 $oldText = $ot->getPrefixedText();
 616                 $newText = $nt->getPrefixedText();
 617
 618                 if ( $ot->exists() ) {
 619                         // NOTE: we assume that if the old title exists, it's because it was re-created as
 620                         // a redirect to the new title. This is not safe, but what we did before was
 621                         // even worse: we just determined whether a redirect should have been created,
 622                         // and reported that it was created if it should have, without any checks.
 623                         // Also note that isRedirect() is unreliable because of T39209.
 624                         $msgName = 'movepage-moved-redirect';
 625                 } else {
 626                         $msgName = 'movepage-moved-noredirect';
 627                 }
 628
 629                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 630                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 631                 $out->addWikiMsg( $msgName );
 632
 633                 // Avoid PHP 7.1 warning from passing $this by reference
 634                 $movePage = $this;
 635                 Hooks::run( 'SpecialMovepageAfterMove', [ &$movePage, &$ot, &$nt ] );
 636
 637                 # Now we move extra pages we've been asked to move: subpages and talk
 638                 # pages.  First, if the old page or the new page is a talk page, we
 639                 # can't move any talk pages: cancel that.
 640                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 641                         $this->moveTalk = false;
 642                 }
 643
 644                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 645                         $this->moveSubpages = false;
 646                 }
 647
 648                 /**
 649                  * Next make a list of id's.  This might be marginally less efficient
 650                  * than a more direct method, but this is not a highly performance-cri-
 651                  * tical code path and readable code is more important here.
 652                  *
 653                  * If the target namespace doesn't allow subpages, moving with subpages
 654                  * would mean that you couldn't move them back in one operation, which
 655                  * is bad.
 656                  * @todo FIXME: A specific error message should be given in this case.
 657                  */
 658
 659                 // @todo FIXME: Use Title::moveSubpages() here
 660                 $dbr = wfGetDB( DB_MASTER );
 661                 if ( $this->moveSubpages && (
 662                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 663                                 $this->moveTalk
 664                                         && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 665                         )
 666                 ) ) {
 667                         $conds = [
 668                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 669                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 670                         ];
 671                         $conds['page_namespace'] = [];
 672                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 673                                 $conds['page_namespace'][] = $ot->getNamespace();
 674                         }
 675                         if ( $this->moveTalk &&
 676                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 677                         ) {
 678                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 679                         }
 680                 } elseif ( $this->moveTalk ) {
 681                         $conds = [
 682                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 683                                 'page_title' => $ot->getDBkey()
 684                         ];
 685                 } else {
 686                         # Skip the query
 687                         $conds = null;
 688                 }
 689
 690                 $extraPages = [];
 691                 if ( !is_null( $conds ) ) {
 692                         $extraPages = TitleArray::newFromResult(
 693                                 $dbr->select( 'page',
 694                                         [ 'page_id', 'page_namespace', 'page_title' ],
 695                                         $conds,
 696                                         __METHOD__
 697                                 )
 698                         );
 699                 }
 700
 701                 $extraOutput = [];
 702                 $count = 1;
 703                 foreach ( $extraPages as $oldSubpage ) {
 704                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 705                                 # Already did this one.
 706                                 continue;
 707                         }
 708
 709                         $newPageName = preg_replace(
 710                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 711                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # T23234
 712                                 $oldSubpage->getDBkey()
 713                         );
 714
 715                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 716                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 717                                 $newNs = $nt->getNamespace();
 718                         } elseif ( $oldSubpage->isTalkPage() ) {
 719                                 $newNs = $nt->getTalkPage()->getNamespace();
 720                         } else {
 721                                 $newNs = $nt->getSubjectPage()->getNamespace();
 722                         }
 723
 724                         # T16385: we need makeTitleSafe because the new page names may
 725                         # be longer than 255 characters.
 726                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 727                         if ( !$newSubpage ) {
 728                                 $oldLink = $linkRenderer->makeKnownLink( $oldSubpage );
 729                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 730                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 731                                 continue;
 732                         }
 733
 734                         # This was copy-pasted from Renameuser, bleh.
 735                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 736                                 $link = $linkRenderer->makeKnownLink( $newSubpage );
 737                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 738                         } else {
 739                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 740
 741                                 if ( $success === true ) {
 742                                         if ( $this->fixRedirects ) {
 743                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 744                                         }
 745                                         $oldLink = $linkRenderer->makeLink(
 746                                                 $oldSubpage,
 747                                                 null,
 748                                                 [],
 749                                                 [ 'redirect' => 'no' ]
 750                                         );
 751
 752                                         $newLink = $linkRenderer->makeKnownLink( $newSubpage );
 753                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 754                                                 ->rawParams( $oldLink, $newLink )->escaped();
 755                                         ++$count;
 756
 757                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 758                                         if ( $count >= $maximumMovedPages ) {
 759                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 760                                                         ->numParams( $maximumMovedPages )->escaped();
 761                                                 break;
 762                                         }
 763                                 } else {
 764                                         $oldLink = $linkRenderer->makeKnownLink( $oldSubpage );
 765                                         $newLink = $linkRenderer->makeLink( $newSubpage );
 766                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 767                                                 ->rawParams( $oldLink, $newLink )->escaped();
 768                                 }
 769                         }
 770                 }
 771
 772                 if ( $extraOutput !== [] ) {
 773                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 774                 }
 775
 776                 # Deal with watches (we don't watch subpages)
 777                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 778                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 779
 780                 /**
 781                  * T163966
 782                  * Increment user_editcount during page moves
 783                  */
 784                 $user->incEditCount();
 785         }
 786
 787         function showLogFragment( $title ) {
 788                 $moveLogPage = new LogPage( 'move' );
 789                 $out = $this->getOutput();
 790                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 791                 LogEventsList::showLogExtract( $out, 'move', $title );
 792         }
 793
 794         /**
 795          * Show subpages of the page being moved. Section is not shown if both current
 796          * namespace does not support subpages and no talk subpages were found.
 797          *
 798          * @param Title $title Page being moved.
 799          */
 800         function showSubpages( $title ) {
 801                 $nsHasSubpages = MWNamespace::hasSubpages( $title->getNamespace() );
 802                 $subpages = $title->getSubpages();
 803                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 804
 805                 $titleIsTalk = $title->isTalkPage();
 806                 $subpagesTalk = $title->getTalkPage()->getSubpages();
 807                 $countTalk = $subpagesTalk instanceof TitleArray ? $subpagesTalk->count() : 0;
 808                 $totalCount = $count + $countTalk;
 809
 810                 if ( !$nsHasSubpages && $countTalk == 0 ) {
 811                         return;
 812                 }
 813
 814                 $this->getOutput()->wrapWikiMsg(
 815                         '== $1 ==',
 816                         [ 'movesubpage', ( $titleIsTalk ? $count : $totalCount ) ]
 817                 );
 818
 819                 if ( $nsHasSubpages ) {
 820                         $this->showSubpagesList( $subpages, $count, 'movesubpagetext', true );
 821                 }
 822
 823                 if ( !$titleIsTalk && $countTalk > 0 ) {
 824                         $this->showSubpagesList( $subpagesTalk, $countTalk, 'movesubpagetalktext' );
 825                 }
 826         }
 827
 828         function showSubpagesList( $subpages, $pagecount, $wikiMsg, $noSubpageMsg = false ) {
 829                 $out = $this->getOutput();
 830
 831                 # No subpages.
 832                 if ( $pagecount == 0 && $noSubpageMsg ) {
 833                         $out->addWikiMsg( 'movenosubpage' );
 834                         return;
 835                 }
 836
 837                 $out->addWikiMsg( $wikiMsg, $this->getLanguage()->formatNum( $pagecount ) );
 838                 $out->addHTML( "<ul>\n" );
 839
 840                 $linkBatch = new LinkBatch( $subpages );
 841                 $linkBatch->setCaller( __METHOD__ );
 842                 $linkBatch->execute();
 843                 $linkRenderer = $this->getLinkRenderer();
 844
 845                 foreach ( $subpages as $subpage ) {
 846                         $link = $linkRenderer->makeLink( $subpage );
 847                         $out->addHTML( "<li>$link</li>\n" );
 848                 }
 849                 $out->addHTML( "</ul>\n" );
 850         }
 851
 852         /**
 853          * Return an array of subpages beginning with $search that this special page will accept.
 854          *
 855          * @param string $search Prefix to search for
 856          * @param int $limit Maximum number of results to return (usually 10)
 857          * @param int $offset Number of results to skip (usually 0)
 858          * @return string[] Matching subpages
 859          */
 860         public function prefixSearchSubpages( $search, $limit, $offset ) {
 861                 return $this->prefixSearchString( $search, $limit, $offset );
 862         }
 863
 864         protected function getGroupName() {
 865                 return 'pagetools';
 866         }
 867 }