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
  37         /** @var string Text input */
  38         protected $reason;
  39
  40         // Checks
  41
  42         /** @var bool */
  43         protected $moveTalk;
  44
  45         /** @var bool */
  46         protected $deleteAndMove;
  47
  48         /** @var bool */
  49         protected $moveSubpages;
  50
  51         /** @var bool */
  52         protected $fixRedirects;
  53
  54         /** @var bool */
  55         protected $leaveRedirect;
  56
  57         /** @var bool */
  58         protected $moveOverShared;
  59
  60         private $watch = false;
  61
  62         public function __construct() {
  63                 parent::__construct( 'Movepage' );
  64         }
  65
  66         public function execute( $par ) {
  67                 $this->useTransactionalTimeLimit();
  68
  69                 $this->checkReadOnly();
  70
  71                 $this->setHeaders();
  72                 $this->outputHeader();
  73
  74                 $request = $this->getRequest();
  75                 $target = !is_null( $par ) ? $par : $request->getVal( 'target' );
  76
  77                 // Yes, the use of getVal() and getText() is wanted, see bug 20365
  78
  79                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  80                 $this->oldTitle = Title::newFromText( $oldTitleText );
  81
  82                 if ( !$this->oldTitle ) {
  83                         // Either oldTitle wasn't passed, or newFromText returned null
  84                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  85                 }
  86                 if ( !$this->oldTitle->exists() ) {
  87                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  88                 }
  89
  90                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  91                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  92                 // Backwards compatibility for forms submitting here from other sources
  93                 // which is more common than it should be..
  94                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
  95                 $this->newTitle = strlen( $newTitleText_bc ) > 0
  96                         ? Title::newFromText( $newTitleText_bc )
  97                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
  98
  99                 $user = $this->getUser();
 100
 101                 # Check rights
 102                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
 103                 if ( count( $permErrors ) ) {
 104                         // Auto-block user's IP if the account was "hard" blocked
 105                         DeferredUpdates::addCallableUpdate( function() use ( $user ) {
 106                                 $user->spreadAnyEditBlock();
 107                         } );
 108                         throw new PermissionsError( 'move', $permErrors );
 109                 }
 110
 111                 $def = !$request->wasPosted();
 112
 113                 $this->reason = $request->getText( 'wpReason' );
 114                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
 115                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
 116                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
 117                 $this->moveSubpages = $request->getBool( 'wpMovesubpages', false );
 118                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' ) && $request->getBool( 'wpConfirm' );
 119                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile', false );
 120                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
 121
 122                 if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
 123                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
 124                 ) {
 125                         $this->doSubmit();
 126                 } else {
 127                         $this->showForm( array() );
 128                 }
 129         }
 130
 131         /**
 132          * Show the form
 133          *
 134          * @param array $err Error messages. Each item is an error message.
 135          *    It may either be a string message name or array message name and
 136          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 137          */
 138         function showForm( $err ) {
 139                 global $wgContLang;
 140
 141                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 142
 143                 $out = $this->getOutput();
 144                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 145                 $out->addModules( 'mediawiki.special.movePage' );
 146                 $out->addModuleStyles( 'mediawiki.special.movePage.styles' );
 147                 $this->addHelpLink( 'Help:Moving a page' );
 148
 149                 if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 150                         $out->wrapWikiMsg(
 151                                 "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>",
 152                                 'moveuserpage-warning'
 153                         );
 154                 } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 155                         $out->wrapWikiMsg(
 156                                 "<div class=\"error mw-movecategorypage-warning\">\n$1\n</div>",
 157                                 'movecategorypage-warning'
 158                         );
 159                 }
 160
 161                 $out->addWikiMsg( $this->getConfig()->get( 'FixDoubleRedirects' ) ?
 162                         'movepagetext' :
 163                         'movepagetext-noredirectfixer'
 164                 );
 165                 $submitVar = 'wpMove';
 166                 $confirm = false;
 167
 168                 $newTitle = $this->newTitle;
 169
 170                 if ( !$newTitle ) {
 171                         # Show the current title as a default
 172                         # when the form is first opened.
 173                         $newTitle = $this->oldTitle;
 174                 } elseif ( !count( $err ) ) {
 175                         # If a title was supplied, probably from the move log revert
 176                         # link, check for validity. We can then show some diagnostic
 177                         # information and save a click.
 178                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 179                         if ( is_array( $newerr ) ) {
 180                                 $err = $newerr;
 181                         }
 182                 }
 183
 184                 $user = $this->getUser();
 185
 186                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 187                         && $newTitle->quickUserCan( 'delete', $user )
 188                 ) {
 189                         $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
 190                         $submitVar = 'wpDeleteAndMove';
 191                         $confirm = true;
 192                         $err = array();
 193                 }
 194
 195                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 196                         && $user->isAllowed( 'reupload-shared' )
 197                 ) {
 198                         $out->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
 199                         $submitVar = 'wpMoveOverSharedFile';
 200                         $err = array();
 201                 }
 202
 203                 $oldTalk = $this->oldTitle->getTalkPage();
 204                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 205                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 206
 207                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 208                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 209
 210                 # We also want to be able to move assoc. subpage talk-pages even if base page
 211                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 212                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 213                         ( $oldTalk->exists()
 214                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 215
 216                 $dbr = wfGetDB( DB_SLAVE );
 217                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 218                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 219                                 array(
 220                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 221                                         'rd_title' => $this->oldTitle->getDBkey(),
 222                                 ), __METHOD__ );
 223                 } else {
 224                         $hasRedirects = false;
 225                 }
 226
 227                 if ( count( $err ) ) {
 228                         $out->addHTML( "<div class='error'>\n" );
 229                         $action_desc = $this->msg( 'action-move' )->plain();
 230                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 231
 232                         if ( count( $err ) == 1 ) {
 233                                 $errMsg = $err[0];
 234                                 $errMsgName = array_shift( $errMsg );
 235
 236                                 if ( $errMsgName == 'hookaborted' ) {
 237                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 238                                 } else {
 239                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 240                                 }
 241                         } else {
 242                                 $errStr = array();
 243
 244                                 foreach ( $err as $errMsg ) {
 245                                         if ( $errMsg[0] == 'hookaborted' ) {
 246                                                 $errStr[] = $errMsg[1];
 247                                         } else {
 248                                                 $errMsgName = array_shift( $errMsg );
 249                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 250                                         }
 251                                 }
 252
 253                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 254                         }
 255                         $out->addHTML( "</div>\n" );
 256                 }
 257
 258                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 259                         # Is the title semi-protected?
 260                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 261                                 $noticeMsg = 'semiprotectedpagemovewarning';
 262                                 $classes[] = 'mw-textarea-sprotected';
 263                         } else {
 264                                 # Then it must be protected based on static groups (regular)
 265                                 $noticeMsg = 'protectedpagemovewarning';
 266                                 $classes[] = 'mw-textarea-protected';
 267                         }
 268                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 269                         $out->addWikiMsg( $noticeMsg );
 270                         LogEventsList::showLogExtract(
 271                                 $out,
 272                                 'protect',
 273                                 $this->oldTitle,
 274                                 '',
 275                                 array( 'lim' => 1 )
 276                         );
 277                         $out->addHTML( "</div>\n" );
 278                 }
 279
 280                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 281                 // is enforced in the mediawiki.special.movePage module
 282
 283                 $immovableNamespaces = array();
 284                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 285                         if ( !MWNamespace::isMovable( $nsId ) ) {
 286                                 $immovableNamespaces[] = $nsId;
 287                         }
 288                 }
 289
 290                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 291
 292                 $out->enableOOUI();
 293                 $fields = array();
 294
 295                 $fields[] = new OOUI\FieldLayout(
 296                         new MediaWiki\Widget\ComplexTitleInputWidget( array(
 297                                 'id' => 'wpNewTitle',
 298                                 'namespace' => array(
 299                                         'id' => 'wpNewTitleNs',
 300                                         'name' => 'wpNewTitleNs',
 301                                         'value' => $newTitle->getNamespace(),
 302                                         'exclude' => $immovableNamespaces,
 303                                 ),
 304                                 'title' => array(
 305                                         'id' => 'wpNewTitleMain',
 306                                         'name' => 'wpNewTitleMain',
 307                                         'value' => $wgContLang->recodeForEdit( $newTitle->getText() ),
 308                                         // Inappropriate, since we're expecting the user to input a non-existent page's title
 309                                         'suggestions' => false,
 310                                 ),
 311                                 'infusable' => true,
 312                         ) ),
 313                         array(
 314                                 'label' => $this->msg( 'newtitle' )->text(),
 315                                 'align' => 'top',
 316                         )
 317                 );
 318
 319                 $fields[] = new OOUI\FieldLayout(
 320                         new OOUI\TextInputWidget( array(
 321                                 'name' => 'wpReason',
 322                                 'id' => 'wpReason',
 323                                 'maxLength' => 200,
 324                                 'infusable' => true,
 325                                 'value' => $this->reason,
 326                         ) ),
 327                         array(
 328                                 'label' => $this->msg( 'movereason' )->text(),
 329                                 'align' => 'top',
 330                         )
 331                 );
 332
 333                 if ( $considerTalk ) {
 334                         $fields[] = new OOUI\FieldLayout(
 335                                 new OOUI\CheckboxInputWidget( array(
 336                                         'name' => 'wpMovetalk',
 337                                         'id' => 'wpMovetalk',
 338                                         'value' => '1',
 339                                         'selected' => $this->moveTalk,
 340                                 ) ),
 341                                 array(
 342                                         'label' => $this->msg( 'movetalk' )->text(),
 343                                         'help' => new OOUI\HtmlSnippet( $this->msg( 'movepagetalktext' )->parseAsBlock() ),
 344                                         'align' => 'inline',
 345                                         'infusable' => true,
 346                                 )
 347                         );
 348                 }
 349
 350                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 351                         if ( $handler->supportsRedirects() ) {
 352                                 $isChecked = $this->leaveRedirect;
 353                                 $isDisabled = false;
 354                         } else {
 355                                 $isChecked = false;
 356                                 $isDisabled = true;
 357                         }
 358                         $fields[] = new OOUI\FieldLayout(
 359                                 new OOUI\CheckboxInputWidget( array(
 360                                         'name' => 'wpLeaveRedirect',
 361                                         'id' => 'wpLeaveRedirect',
 362                                         'value' => '1',
 363                                         'selected' => $isChecked,
 364                                         'disabled' => $isDisabled,
 365                                 ) ),
 366                                 array(
 367                                         'label' => $this->msg( 'move-leave-redirect' )->text(),
 368                                         'align' => 'inline',
 369                                 )
 370                         );
 371                 }
 372
 373                 if ( $hasRedirects ) {
 374                         $fields[] = new OOUI\FieldLayout(
 375                                 new OOUI\CheckboxInputWidget( array(
 376                                         'name' => 'wpFixRedirects',
 377                                         'id' => 'wpFixRedirects',
 378                                         'value' => '1',
 379                                         'selected' => $this->fixRedirects,
 380                                 ) ),
 381                                 array(
 382                                         'label' => $this->msg( 'fix-double-redirects' )->text(),
 383                                         'align' => 'inline',
 384                                 )
 385                         );
 386                 }
 387
 388                 if ( $canMoveSubpage ) {
 389                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 390                         $fields[] = new OOUI\FieldLayout(
 391                                 new OOUI\CheckboxInputWidget( array(
 392                                         'name' => 'wpMovesubpages',
 393                                         'id' => 'wpMovesubpages',
 394                                         'value' => '1',
 395                                         # Don't check the box if we only have talk subpages to
 396                                         # move and we aren't moving the talk page.
 397                                         'selected' => $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 398                                 ) ),
 399                                 array(
 400                                         'label' => new OOUI\HtmlSnippet(
 401                                                 $this->msg(
 402                                                         ( $this->oldTitle->hasSubpages()
 403                                                                 ? 'move-subpages'
 404                                                                 : 'move-talk-subpages' )
 405                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 406                                         ),
 407                                         'align' => 'inline',
 408                                 )
 409                         );
 410                 }
 411
 412                 # Don't allow watching if user is not logged in
 413                 if ( $user->isLoggedIn() ) {
 414                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 415                                 || $user->isWatched( $this->oldTitle ) );
 416                         $fields[] = new OOUI\FieldLayout(
 417                                 new OOUI\CheckboxInputWidget( array(
 418                                         'name' => 'wpWatch',
 419                                         'id' => 'watch', # ew
 420                                         'value' => '1',
 421                                         'selected' => $watchChecked,
 422                                 ) ),
 423                                 array(
 424                                         'label' => $this->msg( 'move-watch' )->text(),
 425                                         'align' => 'inline',
 426                                 )
 427                         );
 428                 }
 429
 430                 if ( $confirm ) {
 431                         $fields[] = new OOUI\FieldLayout(
 432                                 new OOUI\CheckboxInputWidget( array(
 433                                         'name' => 'wpConfirm',
 434                                         'id' => 'wpConfirm',
 435                                         'value' => '1',
 436                                 ) ),
 437                                 array(
 438                                         'label' => $this->msg( 'delete_and_move_confirm' )->text(),
 439                                         'align' => 'inline',
 440                                 )
 441                         );
 442                 }
 443
 444                 $fields[] = new OOUI\FieldLayout(
 445                         new OOUI\ButtonInputWidget( array(
 446                                 'name' => $submitVar,
 447                                 'value' => $this->msg( 'movepagebtn' )->text(),
 448                                 'label' => $this->msg( 'movepagebtn' )->text(),
 449                                 'flags' => array( 'constructive', 'primary' ),
 450                                 'type' => 'submit',
 451                         ) ),
 452                         array(
 453                                 'align' => 'top',
 454                         )
 455                 );
 456
 457                 $fieldset = new OOUI\FieldsetLayout( array(
 458                         'label' => $this->msg( 'move-page-legend' )->text(),
 459                         'id' => 'mw-movepage-table',
 460                         'items' => $fields,
 461                 ) );
 462
 463                 $form = new OOUI\FormLayout( array(
 464                         'method' => 'post',
 465                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 466                         'id' => 'movepage',
 467                 ) );
 468                 $form->appendContent(
 469                         $fieldset,
 470                         new OOUI\HtmlSnippet(
 471                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 472                                 Html::hidden( 'wpEditToken', $user->getEditToken() )
 473                         )
 474                 );
 475
 476                 $out->addHTML(
 477                         new OOUI\PanelLayout( array(
 478                                 'classes' => array( 'movepage-wrapper' ),
 479                                 'expanded' => false,
 480                                 'padded' => true,
 481                                 'framed' => true,
 482                                 'content' => $form,
 483                         ) )
 484                 );
 485
 486                 $this->showLogFragment( $this->oldTitle );
 487                 $this->showSubpages( $this->oldTitle );
 488         }
 489
 490         function doSubmit() {
 491                 $user = $this->getUser();
 492
 493                 if ( $user->pingLimiter( 'move' ) ) {
 494                         throw new ThrottledError;
 495                 }
 496
 497                 $ot = $this->oldTitle;
 498                 $nt = $this->newTitle;
 499
 500                 # don't allow moving to pages with # in
 501                 if ( !$nt || $nt->hasFragment() ) {
 502                         $this->showForm( array( array( 'badtitletext' ) ) );
 503
 504                         return;
 505                 }
 506
 507                 # Show a warning if the target file exists on a shared repo
 508                 if ( $nt->getNamespace() == NS_FILE
 509                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 510                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 511                         && wfFindFile( $nt )
 512                 ) {
 513                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 514
 515                         return;
 516                 }
 517
 518                 # Delete to make way if requested
 519                 if ( $this->deleteAndMove ) {
 520                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 521                         if ( count( $permErrors ) ) {
 522                                 # Only show the first error
 523                                 $this->showForm( $permErrors );
 524
 525                                 return;
 526                         }
 527
 528                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 529
 530                         // Delete an associated image if there is
 531                         if ( $nt->getNamespace() == NS_FILE ) {
 532                                 $file = wfLocalFile( $nt );
 533                                 $file->load( File::READ_LATEST );
 534                                 if ( $file->exists() ) {
 535                                         $file->delete( $reason, false, $user );
 536                                 }
 537                         }
 538
 539                         $error = ''; // passed by ref
 540                         $page = WikiPage::factory( $nt );
 541                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 542                         if ( !$deleteStatus->isGood() ) {
 543                                 $this->showForm( $deleteStatus->getErrorsArray() );
 544
 545                                 return;
 546                         }
 547                 }
 548
 549                 $handler = ContentHandler::getForTitle( $ot );
 550
 551                 if ( !$handler->supportsRedirects() ) {
 552                         $createRedirect = false;
 553                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 554                         $createRedirect = $this->leaveRedirect;
 555                 } else {
 556                         $createRedirect = true;
 557                 }
 558
 559                 # Do the actual move.
 560                 $mp = new MovePage( $ot, $nt );
 561                 $valid = $mp->isValidMove();
 562                 if ( !$valid->isOK() ) {
 563                         $this->showForm( $valid->getErrorsArray() );
 564                         return;
 565                 }
 566
 567                 $permStatus = $mp->checkPermissions( $user, $this->reason );
 568                 if ( !$permStatus->isOK() ) {
 569                         $this->showForm( $permStatus->getErrorsArray() );
 570                         return;
 571                 }
 572
 573                 $status = $mp->move( $user, $this->reason, $createRedirect );
 574                 if ( !$status->isOK() ) {
 575                         $this->showForm( $status->getErrorsArray() );
 576                         return;
 577                 }
 578
 579                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 580                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 581                 }
 582
 583                 $out = $this->getOutput();
 584                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 585
 586                 $oldLink = Linker::link(
 587                         $ot,
 588                         null,
 589                         array( 'id' => 'movepage-oldlink' ),
 590                         array( 'redirect' => 'no' )
 591                 );
 592                 $newLink = Linker::linkKnown(
 593                         $nt,
 594                         null,
 595                         array( 'id' => 'movepage-newlink' )
 596                 );
 597                 $oldText = $ot->getPrefixedText();
 598                 $newText = $nt->getPrefixedText();
 599
 600                 if ( $ot->exists() ) {
 601                         // NOTE: we assume that if the old title exists, it's because it was re-created as
 602                         // a redirect to the new title. This is not safe, but what we did before was
 603                         // even worse: we just determined whether a redirect should have been created,
 604                         // and reported that it was created if it should have, without any checks.
 605                         // Also note that isRedirect() is unreliable because of bug 37209.
 606                         $msgName = 'movepage-moved-redirect';
 607                 } else {
 608                         $msgName = 'movepage-moved-noredirect';
 609                 }
 610
 611                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 612                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 613                 $out->addWikiMsg( $msgName );
 614
 615                 Hooks::run( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 616
 617                 # Now we move extra pages we've been asked to move: subpages and talk
 618                 # pages.  First, if the old page or the new page is a talk page, we
 619                 # can't move any talk pages: cancel that.
 620                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 621                         $this->moveTalk = false;
 622                 }
 623
 624                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 625                         $this->moveSubpages = false;
 626                 }
 627
 628                 /**
 629                  * Next make a list of id's.  This might be marginally less efficient
 630                  * than a more direct method, but this is not a highly performance-cri-
 631                  * tical code path and readable code is more important here.
 632                  *
 633                  * If the target namespace doesn't allow subpages, moving with subpages
 634                  * would mean that you couldn't move them back in one operation, which
 635                  * is bad.
 636                  * @todo FIXME: A specific error message should be given in this case.
 637                  */
 638
 639                 // @todo FIXME: Use Title::moveSubpages() here
 640                 $dbr = wfGetDB( DB_MASTER );
 641                 if ( $this->moveSubpages && (
 642                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 643                                 $this->moveTalk
 644                                         && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 645                         )
 646                 ) ) {
 647                         $conds = array(
 648                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 649                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 650                         );
 651                         $conds['page_namespace'] = array();
 652                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 653                                 $conds['page_namespace'][] = $ot->getNamespace();
 654                         }
 655                         if ( $this->moveTalk &&
 656                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 657                         ) {
 658                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 659                         }
 660                 } elseif ( $this->moveTalk ) {
 661                         $conds = array(
 662                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 663                                 'page_title' => $ot->getDBkey()
 664                         );
 665                 } else {
 666                         # Skip the query
 667                         $conds = null;
 668                 }
 669
 670                 $extraPages = array();
 671                 if ( !is_null( $conds ) ) {
 672                         $extraPages = TitleArray::newFromResult(
 673                                 $dbr->select( 'page',
 674                                         array( 'page_id', 'page_namespace', 'page_title' ),
 675                                         $conds,
 676                                         __METHOD__
 677                                 )
 678                         );
 679                 }
 680
 681                 $extraOutput = array();
 682                 $count = 1;
 683                 foreach ( $extraPages as $oldSubpage ) {
 684                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 685                                 # Already did this one.
 686                                 continue;
 687                         }
 688
 689                         $newPageName = preg_replace(
 690                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 691                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 692                                 $oldSubpage->getDBkey()
 693                         );
 694
 695                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 696                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 697                                 $newNs = $nt->getNamespace();
 698                         } elseif ( $oldSubpage->isTalkPage() ) {
 699                                 $newNs = $nt->getTalkPage()->getNamespace();
 700                         } else {
 701                                 $newNs = $nt->getSubjectPage()->getNamespace();
 702                         }
 703
 704                         # Bug 14385: we need makeTitleSafe because the new page names may
 705                         # be longer than 255 characters.
 706                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 707                         if ( !$newSubpage ) {
 708                                 $oldLink = Linker::linkKnown( $oldSubpage );
 709                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 710                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 711                                 continue;
 712                         }
 713
 714                         # This was copy-pasted from Renameuser, bleh.
 715                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 716                                 $link = Linker::linkKnown( $newSubpage );
 717                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 718                         } else {
 719                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 720
 721                                 if ( $success === true ) {
 722                                         if ( $this->fixRedirects ) {
 723                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 724                                         }
 725                                         $oldLink = Linker::link(
 726                                                 $oldSubpage,
 727                                                 null,
 728                                                 array(),
 729                                                 array( 'redirect' => 'no' )
 730                                         );
 731
 732                                         $newLink = Linker::linkKnown( $newSubpage );
 733                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 734                                                 ->rawParams( $oldLink, $newLink )->escaped();
 735                                         ++$count;
 736
 737                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 738                                         if ( $count >= $maximumMovedPages ) {
 739                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 740                                                         ->numParams( $maximumMovedPages )->escaped();
 741                                                 break;
 742                                         }
 743                                 } else {
 744                                         $oldLink = Linker::linkKnown( $oldSubpage );
 745                                         $newLink = Linker::link( $newSubpage );
 746                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 747                                                 ->rawParams( $oldLink, $newLink )->escaped();
 748                                 }
 749                         }
 750                 }
 751
 752                 if ( $extraOutput !== array() ) {
 753                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 754                 }
 755
 756                 # Deal with watches (we don't watch subpages)
 757                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 758                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 759         }
 760
 761         function showLogFragment( $title ) {
 762                 $moveLogPage = new LogPage( 'move' );
 763                 $out = $this->getOutput();
 764                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 765                 LogEventsList::showLogExtract( $out, 'move', $title );
 766         }
 767
 768         function showSubpages( $title ) {
 769                 if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 770                         return;
 771                 }
 772
 773                 $subpages = $title->getSubpages();
 774                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 775
 776                 $out = $this->getOutput();
 777                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 778
 779                 # No subpages.
 780                 if ( $count == 0 ) {
 781                         $out->addWikiMsg( 'movenosubpage' );
 782
 783                         return;
 784                 }
 785
 786                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 787                 $out->addHTML( "<ul>\n" );
 788
 789                 foreach ( $subpages as $subpage ) {
 790                         $link = Linker::link( $subpage );
 791                         $out->addHTML( "<li>$link</li>\n" );
 792                 }
 793                 $out->addHTML( "</ul>\n" );
 794         }
 795
 796         protected function getGroupName() {
 797                 return 'pagetools';
 798         }
 799 }