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                 $newTitle = $this->newTitle;
 150
 151                 if ( !$newTitle ) {
 152                         # Show the current title as a default
 153                         # when the form is first opened.
 154                         $newTitle = $this->oldTitle;
 155                 } elseif ( !count( $err ) ) {
 156                         # If a title was supplied, probably from the move log revert
 157                         # link, check for validity. We can then show some diagnostic
 158                         # information and save a click.
 159                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 160                         if ( is_array( $newerr ) ) {
 161                                 $err = $newerr;
 162                         }
 163                 }
 164
 165                 $user = $this->getUser();
 166
 167                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 168                         && $newTitle->quickUserCan( 'delete', $user )
 169                 ) {
 170                         $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
 171                         $movepagebtn = $this->msg( 'delete_and_move' )->text();
 172                         $submitVar = 'wpDeleteAndMove';
 173                         $confirm = true;
 174                         $err = array();
 175                 } else {
 176                         if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 177                                 $out->wrapWikiMsg(
 178                                         "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>",
 179                                         'moveuserpage-warning'
 180                                 );
 181                         } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 182                                 $out->wrapWikiMsg(
 183                                         "<div class=\"error mw-movecategorypage-warning\">\n$1\n</div>",
 184                                         'movecategorypage-warning'
 185                                 );
 186                         }
 187
 188                         $out->addWikiMsg( $this->getConfig()->get( 'FixDoubleRedirects' ) ?
 189                                 'movepagetext' :
 190                                 'movepagetext-noredirectfixer'
 191                         );
 192                         $movepagebtn = $this->msg( 'movepagebtn' )->text();
 193                         $submitVar = 'wpMove';
 194                         $confirm = false;
 195                 }
 196
 197                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 198                         && $user->isAllowed( 'reupload-shared' )
 199                 ) {
 200                         $out->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
 201                         $submitVar = 'wpMoveOverSharedFile';
 202                         $err = array();
 203                 }
 204
 205                 $oldTalk = $this->oldTitle->getTalkPage();
 206                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 207                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 208
 209                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 210                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 211
 212                 # We also want to be able to move assoc. subpage talk-pages even if base page
 213                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 214                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 215                         ( $oldTalk->exists()
 216                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 217
 218                 $dbr = wfGetDB( DB_SLAVE );
 219                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 220                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 221                                 array(
 222                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 223                                         'rd_title' => $this->oldTitle->getDBkey(),
 224                                 ), __METHOD__ );
 225                 } else {
 226                         $hasRedirects = false;
 227                 }
 228
 229                 if ( count( $err ) ) {
 230                         $out->addHTML( "<div class='error'>\n" );
 231                         $action_desc = $this->msg( 'action-move' )->plain();
 232                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 233
 234                         if ( count( $err ) == 1 ) {
 235                                 $errMsg = $err[0];
 236                                 $errMsgName = array_shift( $errMsg );
 237
 238                                 if ( $errMsgName == 'hookaborted' ) {
 239                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 240                                 } else {
 241                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 242                                 }
 243                         } else {
 244                                 $errStr = array();
 245
 246                                 foreach ( $err as $errMsg ) {
 247                                         if ( $errMsg[0] == 'hookaborted' ) {
 248                                                 $errStr[] = $errMsg[1];
 249                                         } else {
 250                                                 $errMsgName = array_shift( $errMsg );
 251                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 252                                         }
 253                                 }
 254
 255                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 256                         }
 257                         $out->addHTML( "</div>\n" );
 258                 }
 259
 260                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 261                         # Is the title semi-protected?
 262                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 263                                 $noticeMsg = 'semiprotectedpagemovewarning';
 264                                 $classes[] = 'mw-textarea-sprotected';
 265                         } else {
 266                                 # Then it must be protected based on static groups (regular)
 267                                 $noticeMsg = 'protectedpagemovewarning';
 268                                 $classes[] = 'mw-textarea-protected';
 269                         }
 270                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 271                         $out->addWikiMsg( $noticeMsg );
 272                         LogEventsList::showLogExtract(
 273                                 $out,
 274                                 'protect',
 275                                 $this->oldTitle,
 276                                 '',
 277                                 array( 'lim' => 1 )
 278                         );
 279                         $out->addHTML( "</div>\n" );
 280                 }
 281
 282                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 283                 // is enforced in the mediawiki.special.movePage module
 284
 285                 $immovableNamespaces = array();
 286                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 287                         if ( !MWNamespace::isMovable( $nsId ) ) {
 288                                 $immovableNamespaces[] = $nsId;
 289                         }
 290                 }
 291
 292                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 293
 294                 $out->enableOOUI();
 295                 $fields = array();
 296
 297                 $fields[] = new OOUI\FieldLayout(
 298                         new MediaWiki\Widget\ComplexTitleInputWidget( array(
 299                                 'id' => 'wpNewTitle',
 300                                 'namespace' => array(
 301                                         'id' => 'wpNewTitleNs',
 302                                         'name' => 'wpNewTitleNs',
 303                                         'value' => $newTitle->getNamespace(),
 304                                         'exclude' => $immovableNamespaces,
 305                                 ),
 306                                 'title' => array(
 307                                         'id' => 'wpNewTitleMain',
 308                                         'name' => 'wpNewTitleMain',
 309                                         'value' => $wgContLang->recodeForEdit( $newTitle->getText() ),
 310                                         // Inappropriate, since we're expecting the user to input a non-existent page's title
 311                                         'suggestions' => false,
 312                                 ),
 313                                 'infusable' => true,
 314                         ) ),
 315                         array(
 316                                 'label' => $this->msg( 'newtitle' )->text(),
 317                                 'align' => 'top',
 318                         )
 319                 );
 320
 321                 $fields[] = new OOUI\FieldLayout(
 322                         new OOUI\TextInputWidget( array(
 323                                 'name' => 'wpReason',
 324                                 'id' => 'wpReason',
 325                                 'maxLength' => 200,
 326                                 'infusable' => true,
 327                                 'value' => $this->reason,
 328                         ) ),
 329                         array(
 330                                 'label' => $this->msg( 'movereason' )->text(),
 331                                 'align' => 'top',
 332                         )
 333                 );
 334
 335                 if ( $considerTalk ) {
 336                         $fields[] = new OOUI\FieldLayout(
 337                                 new OOUI\CheckboxInputWidget( array(
 338                                         'name' => 'wpMovetalk',
 339                                         'id' => 'wpMovetalk',
 340                                         'value' => '1',
 341                                         'selected' => $this->moveTalk,
 342                                 ) ),
 343                                 array(
 344                                         'label' => $this->msg( 'movetalk' )->text(),
 345                                         'help' => new OOUI\HtmlSnippet( $this->msg( 'movepagetalktext' )->parseAsBlock() ),
 346                                         'align' => 'inline',
 347                                         'infusable' => true,
 348                                 )
 349                         );
 350                 }
 351
 352                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 353                         if ( $handler->supportsRedirects() ) {
 354                                 $isChecked = $this->leaveRedirect;
 355                                 $isDisabled = false;
 356                         } else {
 357                                 $isChecked = false;
 358                                 $isDisabled = true;
 359                         }
 360                         $fields[] = new OOUI\FieldLayout(
 361                                 new OOUI\CheckboxInputWidget( array(
 362                                         'name' => 'wpLeaveRedirect',
 363                                         'id' => 'wpLeaveRedirect',
 364                                         'value' => '1',
 365                                         'selected' => $isChecked,
 366                                         'disabled' => $isDisabled,
 367                                 ) ),
 368                                 array(
 369                                         'label' => $this->msg( 'move-leave-redirect' )->text(),
 370                                         'align' => 'inline',
 371                                 )
 372                         );
 373                 }
 374
 375                 if ( $hasRedirects ) {
 376                         $fields[] = new OOUI\FieldLayout(
 377                                 new OOUI\CheckboxInputWidget( array(
 378                                         'name' => 'wpFixRedirects',
 379                                         'id' => 'wpFixRedirects',
 380                                         'value' => '1',
 381                                         'selected' => $this->fixRedirects,
 382                                 ) ),
 383                                 array(
 384                                         'label' => $this->msg( 'fix-double-redirects' )->text(),
 385                                         'align' => 'inline',
 386                                 )
 387                         );
 388                 }
 389
 390                 if ( $canMoveSubpage ) {
 391                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 392                         $fields[] = new OOUI\FieldLayout(
 393                                 new OOUI\CheckboxInputWidget( array(
 394                                         'name' => 'wpMovesubpages',
 395                                         'id' => 'wpMovesubpages',
 396                                         'value' => '1',
 397                                         # Don't check the box if we only have talk subpages to
 398                                         # move and we aren't moving the talk page.
 399                                         'selected' => $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 400                                 ) ),
 401                                 array(
 402                                         'label' => new OOUI\HtmlSnippet(
 403                                                 $this->msg(
 404                                                         ( $this->oldTitle->hasSubpages()
 405                                                                 ? 'move-subpages'
 406                                                                 : 'move-talk-subpages' )
 407                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 408                                         ),
 409                                         'align' => 'inline',
 410                                 )
 411                         );
 412                 }
 413
 414                 # Don't allow watching if user is not logged in
 415                 if ( $user->isLoggedIn() ) {
 416                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 417                                 || $user->isWatched( $this->oldTitle ) );
 418                         $fields[] = new OOUI\FieldLayout(
 419                                 new OOUI\CheckboxInputWidget( array(
 420                                         'name' => 'wpWatch',
 421                                         'id' => 'watch', # ew
 422                                         'value' => '1',
 423                                         'selected' => $watchChecked,
 424                                 ) ),
 425                                 array(
 426                                         'label' => $this->msg( 'move-watch' )->text(),
 427                                         'align' => 'inline',
 428                                 )
 429                         );
 430                 }
 431
 432                 if ( $confirm ) {
 433                         $fields[] = new OOUI\FieldLayout(
 434                                 new OOUI\CheckboxInputWidget( array(
 435                                         'name' => 'wpConfirm',
 436                                         'id' => 'wpConfirm',
 437                                         'value' => '1',
 438                                 ) ),
 439                                 array(
 440                                         'label' => $this->msg( 'delete_and_move_confirm' )->text(),
 441                                         'align' => 'inline',
 442                                 )
 443                         );
 444                 }
 445
 446                 $fields[] = new OOUI\FieldLayout(
 447                         new OOUI\ButtonInputWidget( array(
 448                                 'name' => $submitVar,
 449                                 'value' => $movepagebtn,
 450                                 'label' => $movepagebtn,
 451                                 'flags' => array( 'constructive', 'primary' ),
 452                                 'type' => 'submit',
 453                         ) ),
 454                         array(
 455                                 'align' => 'top',
 456                         )
 457                 );
 458
 459                 $fieldset = new OOUI\FieldsetLayout( array(
 460                         'label' => $this->msg( 'move-page-legend' )->text(),
 461                         'id' => 'mw-movepage-table',
 462                         'items' => $fields,
 463                 ) );
 464
 465                 $form = new OOUI\FormLayout( array(
 466                         'method' => 'post',
 467                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 468                         'id' => 'movepage',
 469                 ) );
 470                 $form->appendContent(
 471                         $fieldset,
 472                         new OOUI\HtmlSnippet(
 473                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 474                                 Html::hidden( 'wpEditToken', $user->getEditToken() )
 475                         )
 476                 );
 477
 478                 $out->addHTML(
 479                         new OOUI\PanelLayout( array(
 480                                 'classes' => array( 'movepage-wrapper' ),
 481                                 'expanded' => false,
 482                                 'padded' => true,
 483                                 'framed' => true,
 484                                 'content' => $form,
 485                         ) )
 486                 );
 487
 488                 $this->showLogFragment( $this->oldTitle );
 489                 $this->showSubpages( $this->oldTitle );
 490         }
 491
 492         function doSubmit() {
 493                 $user = $this->getUser();
 494
 495                 if ( $user->pingLimiter( 'move' ) ) {
 496                         throw new ThrottledError;
 497                 }
 498
 499                 $ot = $this->oldTitle;
 500                 $nt = $this->newTitle;
 501
 502                 # don't allow moving to pages with # in
 503                 if ( !$nt || $nt->hasFragment() ) {
 504                         $this->showForm( array( array( 'badtitletext' ) ) );
 505
 506                         return;
 507                 }
 508
 509                 # Show a warning if the target file exists on a shared repo
 510                 if ( $nt->getNamespace() == NS_FILE
 511                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 512                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 513                         && wfFindFile( $nt )
 514                 ) {
 515                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 516
 517                         return;
 518                 }
 519
 520                 # Delete to make way if requested
 521                 if ( $this->deleteAndMove ) {
 522                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 523                         if ( count( $permErrors ) ) {
 524                                 # Only show the first error
 525                                 $this->showForm( $permErrors );
 526
 527                                 return;
 528                         }
 529
 530                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 531
 532                         // Delete an associated image if there is
 533                         if ( $nt->getNamespace() == NS_FILE ) {
 534                                 $file = wfLocalFile( $nt );
 535                                 $file->load( File::READ_LATEST );
 536                                 if ( $file->exists() ) {
 537                                         $file->delete( $reason, false, $user );
 538                                 }
 539                         }
 540
 541                         $error = ''; // passed by ref
 542                         $page = WikiPage::factory( $nt );
 543                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 544                         if ( !$deleteStatus->isGood() ) {
 545                                 $this->showForm( $deleteStatus->getErrorsArray() );
 546
 547                                 return;
 548                         }
 549                 }
 550
 551                 $handler = ContentHandler::getForTitle( $ot );
 552
 553                 if ( !$handler->supportsRedirects() ) {
 554                         $createRedirect = false;
 555                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 556                         $createRedirect = $this->leaveRedirect;
 557                 } else {
 558                         $createRedirect = true;
 559                 }
 560
 561                 # Do the actual move.
 562                 $mp = new MovePage( $ot, $nt );
 563                 $valid = $mp->isValidMove();
 564                 if ( !$valid->isOK() ) {
 565                         $this->showForm( $valid->getErrorsArray() );
 566                         return;
 567                 }
 568
 569                 $permStatus = $mp->checkPermissions( $user, $this->reason );
 570                 if ( !$permStatus->isOK() ) {
 571                         $this->showForm( $permStatus->getErrorsArray() );
 572                         return;
 573                 }
 574
 575                 $status = $mp->move( $user, $this->reason, $createRedirect );
 576                 if ( !$status->isOK() ) {
 577                         $this->showForm( $status->getErrorsArray() );
 578                         return;
 579                 }
 580
 581                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 582                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 583                 }
 584
 585                 $out = $this->getOutput();
 586                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 587
 588                 $oldLink = Linker::link(
 589                         $ot,
 590                         null,
 591                         array( 'id' => 'movepage-oldlink' ),
 592                         array( 'redirect' => 'no' )
 593                 );
 594                 $newLink = Linker::linkKnown(
 595                         $nt,
 596                         null,
 597                         array( 'id' => 'movepage-newlink' )
 598                 );
 599                 $oldText = $ot->getPrefixedText();
 600                 $newText = $nt->getPrefixedText();
 601
 602                 if ( $ot->exists() ) {
 603                         // NOTE: we assume that if the old title exists, it's because it was re-created as
 604                         // a redirect to the new title. This is not safe, but what we did before was
 605                         // even worse: we just determined whether a redirect should have been created,
 606                         // and reported that it was created if it should have, without any checks.
 607                         // Also note that isRedirect() is unreliable because of bug 37209.
 608                         $msgName = 'movepage-moved-redirect';
 609                 } else {
 610                         $msgName = 'movepage-moved-noredirect';
 611                 }
 612
 613                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 614                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 615                 $out->addWikiMsg( $msgName );
 616
 617                 Hooks::run( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 618
 619                 # Now we move extra pages we've been asked to move: subpages and talk
 620                 # pages.  First, if the old page or the new page is a talk page, we
 621                 # can't move any talk pages: cancel that.
 622                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 623                         $this->moveTalk = false;
 624                 }
 625
 626                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 627                         $this->moveSubpages = false;
 628                 }
 629
 630                 /**
 631                  * Next make a list of id's.  This might be marginally less efficient
 632                  * than a more direct method, but this is not a highly performance-cri-
 633                  * tical code path and readable code is more important here.
 634                  *
 635                  * Note: this query works nicely on MySQL 5, but the optimizer in MySQL
 636                  * 4 might get confused.  If so, consider rewriting as a UNION.
 637                  *
 638                  * If the target namespace doesn't allow subpages, moving with subpages
 639                  * would mean that you couldn't move them back in one operation, which
 640                  * is bad.
 641                  * @todo FIXME: A specific error message should be given in this case.
 642                  */
 643
 644                 // @todo FIXME: Use Title::moveSubpages() here
 645                 $dbr = wfGetDB( DB_MASTER );
 646                 if ( $this->moveSubpages && (
 647                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 648                                 $this->moveTalk
 649                                         && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 650                         )
 651                 ) ) {
 652                         $conds = array(
 653                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 654                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 655                         );
 656                         $conds['page_namespace'] = array();
 657                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 658                                 $conds['page_namespace'][] = $ot->getNamespace();
 659                         }
 660                         if ( $this->moveTalk &&
 661                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 662                         ) {
 663                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 664                         }
 665                 } elseif ( $this->moveTalk ) {
 666                         $conds = array(
 667                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 668                                 'page_title' => $ot->getDBkey()
 669                         );
 670                 } else {
 671                         # Skip the query
 672                         $conds = null;
 673                 }
 674
 675                 $extraPages = array();
 676                 if ( !is_null( $conds ) ) {
 677                         $extraPages = TitleArray::newFromResult(
 678                                 $dbr->select( 'page',
 679                                         array( 'page_id', 'page_namespace', 'page_title' ),
 680                                         $conds,
 681                                         __METHOD__
 682                                 )
 683                         );
 684                 }
 685
 686                 $extraOutput = array();
 687                 $count = 1;
 688                 foreach ( $extraPages as $oldSubpage ) {
 689                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 690                                 # Already did this one.
 691                                 continue;
 692                         }
 693
 694                         $newPageName = preg_replace(
 695                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 696                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 697                                 $oldSubpage->getDBkey()
 698                         );
 699
 700                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 701                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 702                                 $newNs = $nt->getNamespace();
 703                         } elseif ( $oldSubpage->isTalkPage() ) {
 704                                 $newNs = $nt->getTalkPage()->getNamespace();
 705                         } else {
 706                                 $newNs = $nt->getSubjectPage()->getNamespace();
 707                         }
 708
 709                         # Bug 14385: we need makeTitleSafe because the new page names may
 710                         # be longer than 255 characters.
 711                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 712                         if ( !$newSubpage ) {
 713                                 $oldLink = Linker::linkKnown( $oldSubpage );
 714                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 715                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 716                                 continue;
 717                         }
 718
 719                         # This was copy-pasted from Renameuser, bleh.
 720                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 721                                 $link = Linker::linkKnown( $newSubpage );
 722                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 723                         } else {
 724                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 725
 726                                 if ( $success === true ) {
 727                                         if ( $this->fixRedirects ) {
 728                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 729                                         }
 730                                         $oldLink = Linker::link(
 731                                                 $oldSubpage,
 732                                                 null,
 733                                                 array(),
 734                                                 array( 'redirect' => 'no' )
 735                                         );
 736
 737                                         $newLink = Linker::linkKnown( $newSubpage );
 738                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 739                                                 ->rawParams( $oldLink, $newLink )->escaped();
 740                                         ++$count;
 741
 742                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 743                                         if ( $count >= $maximumMovedPages ) {
 744                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 745                                                         ->numParams( $maximumMovedPages )->escaped();
 746                                                 break;
 747                                         }
 748                                 } else {
 749                                         $oldLink = Linker::linkKnown( $oldSubpage );
 750                                         $newLink = Linker::link( $newSubpage );
 751                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 752                                                 ->rawParams( $oldLink, $newLink )->escaped();
 753                                 }
 754                         }
 755                 }
 756
 757                 if ( $extraOutput !== array() ) {
 758                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 759                 }
 760
 761                 # Deal with watches (we don't watch subpages)
 762                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 763                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 764         }
 765
 766         function showLogFragment( $title ) {
 767                 $moveLogPage = new LogPage( 'move' );
 768                 $out = $this->getOutput();
 769                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 770                 LogEventsList::showLogExtract( $out, 'move', $title );
 771         }
 772
 773         function showSubpages( $title ) {
 774                 if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 775                         return;
 776                 }
 777
 778                 $subpages = $title->getSubpages();
 779                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 780
 781                 $out = $this->getOutput();
 782                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 783
 784                 # No subpages.
 785                 if ( $count == 0 ) {
 786                         $out->addWikiMsg( 'movenosubpage' );
 787
 788                         return;
 789                 }
 790
 791                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 792                 $out->addHTML( "<ul>\n" );
 793
 794                 foreach ( $subpages as $subpage ) {
 795                         $link = Linker::link( $subpage );
 796                         $out->addHTML( "<li>$link</li>\n" );
 797                 }
 798                 $out->addHTML( "</ul>\n" );
 799         }
 800
 801         protected function getGroupName() {
 802                 return 'pagetools';
 803         }
 804 }