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                 if ( is_string( $oldTitleText ) ) {
  81                         $this->oldTitle = Title::newFromText( $oldTitleText );
  82                 }
  83
  84                 if ( $this->oldTitle === null ) {
  85                         // Either oldTitle wasn't passed, or newFromText returned null
  86                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  87                 }
  88                 if ( !$this->oldTitle->exists() ) {
  89                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  90                 }
  91
  92                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  93                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  94                 // Backwards compatibility for forms submitting here from other sources
  95                 // which is more common than it should be..
  96                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
  97                 $this->newTitle = strlen( $newTitleText_bc ) > 0
  98                         ? Title::newFromText( $newTitleText_bc )
  99                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
 100
 101                 $user = $this->getUser();
 102
 103                 # Check rights
 104                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
 105                 if ( count( $permErrors ) ) {
 106                         // Auto-block user's IP if the account was "hard" blocked
 107                         DeferredUpdates::addCallableUpdate( function() use ( $user ) {
 108                                 $user->spreadAnyEditBlock();
 109                         } );
 110                         throw new PermissionsError( 'move', $permErrors );
 111                 }
 112
 113                 $def = !$request->wasPosted();
 114
 115                 $this->reason = $request->getText( 'wpReason' );
 116                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
 117                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
 118                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
 119                 $this->moveSubpages = $request->getBool( 'wpMovesubpages', false );
 120                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' ) && $request->getBool( 'wpConfirm' );
 121                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile', false );
 122                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
 123
 124                 if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
 125                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
 126                 ) {
 127                         $this->doSubmit();
 128                 } else {
 129                         $this->showForm( array() );
 130                 }
 131         }
 132
 133         /**
 134          * Show the form
 135          *
 136          * @param array $err Error messages. Each item is an error message.
 137          *    It may either be a string message name or array message name and
 138          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 139          */
 140         function showForm( $err ) {
 141                 global $wgContLang;
 142
 143                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 144
 145                 $out = $this->getOutput();
 146                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 147                 $out->addModules( 'mediawiki.special.movePage' );
 148                 $out->addModuleStyles( 'mediawiki.special.movePage.styles' );
 149                 $this->addHelpLink( 'Help:Moving a page' );
 150
 151                 $newTitle = $this->newTitle;
 152
 153                 if ( !$newTitle ) {
 154                         # Show the current title as a default
 155                         # when the form is first opened.
 156                         $newTitle = $this->oldTitle;
 157                 } elseif ( !count( $err ) ) {
 158                         # If a title was supplied, probably from the move log revert
 159                         # link, check for validity. We can then show some diagnostic
 160                         # information and save a click.
 161                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 162                         if ( is_array( $newerr ) ) {
 163                                 $err = $newerr;
 164                         }
 165                 }
 166
 167                 $user = $this->getUser();
 168
 169                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 170                         && $newTitle->quickUserCan( 'delete', $user )
 171                 ) {
 172                         $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
 173                         $movepagebtn = $this->msg( 'delete_and_move' )->text();
 174                         $submitVar = 'wpDeleteAndMove';
 175                         $confirm = true;
 176                         $err = array();
 177                 } else {
 178                         if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 179                                 $out->wrapWikiMsg(
 180                                         "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>",
 181                                         'moveuserpage-warning'
 182                                 );
 183                         } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 184                                 $out->wrapWikiMsg(
 185                                         "<div class=\"error mw-movecategorypage-warning\">\n$1\n</div>",
 186                                         'movecategorypage-warning'
 187                                 );
 188                         }
 189
 190                         $out->addWikiMsg( $this->getConfig()->get( 'FixDoubleRedirects' ) ?
 191                                 'movepagetext' :
 192                                 'movepagetext-noredirectfixer'
 193                         );
 194                         $movepagebtn = $this->msg( 'movepagebtn' )->text();
 195                         $submitVar = 'wpMove';
 196                         $confirm = false;
 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->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
 203                         $submitVar = 'wpMoveOverSharedFile';
 204                         $err = array();
 205                 }
 206
 207                 $oldTalk = $this->oldTitle->getTalkPage();
 208                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 209                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 210
 211                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 212                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 213
 214                 # We also want to be able to move assoc. subpage talk-pages even if base page
 215                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 216                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 217                         ( $oldTalk->exists()
 218                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 219
 220                 $dbr = wfGetDB( DB_SLAVE );
 221                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 222                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 223                                 array(
 224                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 225                                         'rd_title' => $this->oldTitle->getDBkey(),
 226                                 ), __METHOD__ );
 227                 } else {
 228                         $hasRedirects = false;
 229                 }
 230
 231                 if ( count( $err ) ) {
 232                         $out->addHTML( "<div class='error'>\n" );
 233                         $action_desc = $this->msg( 'action-move' )->plain();
 234                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 235
 236                         if ( count( $err ) == 1 ) {
 237                                 $errMsg = $err[0];
 238                                 $errMsgName = array_shift( $errMsg );
 239
 240                                 if ( $errMsgName == 'hookaborted' ) {
 241                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 242                                 } else {
 243                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 244                                 }
 245                         } else {
 246                                 $errStr = array();
 247
 248                                 foreach ( $err as $errMsg ) {
 249                                         if ( $errMsg[0] == 'hookaborted' ) {
 250                                                 $errStr[] = $errMsg[1];
 251                                         } else {
 252                                                 $errMsgName = array_shift( $errMsg );
 253                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 254                                         }
 255                                 }
 256
 257                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 258                         }
 259                         $out->addHTML( "</div>\n" );
 260                 }
 261
 262                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 263                         # Is the title semi-protected?
 264                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 265                                 $noticeMsg = 'semiprotectedpagemovewarning';
 266                                 $classes[] = 'mw-textarea-sprotected';
 267                         } else {
 268                                 # Then it must be protected based on static groups (regular)
 269                                 $noticeMsg = 'protectedpagemovewarning';
 270                                 $classes[] = 'mw-textarea-protected';
 271                         }
 272                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 273                         $out->addWikiMsg( $noticeMsg );
 274                         LogEventsList::showLogExtract(
 275                                 $out,
 276                                 'protect',
 277                                 $this->oldTitle,
 278                                 '',
 279                                 array( 'lim' => 1 )
 280                         );
 281                         $out->addHTML( "</div>\n" );
 282                 }
 283
 284                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 285                 // is enforced in the mediawiki.special.movePage module
 286
 287                 $immovableNamespaces = array();
 288                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 289                         if ( !MWNamespace::isMovable( $nsId ) ) {
 290                                 $immovableNamespaces[] = $nsId;
 291                         }
 292                 }
 293
 294                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 295
 296                 $out->enableOOUI();
 297                 $fields = array();
 298
 299                 $fields[] = new OOUI\FieldLayout(
 300                         new MediaWiki\Widget\ComplexTitleInputWidget( array(
 301                                 'id' => 'wpNewTitle',
 302                                 'namespace' => array(
 303                                         'id' => 'wpNewTitleNs',
 304                                         'name' => 'wpNewTitleNs',
 305                                         'value' => $newTitle->getNamespace(),
 306                                         'exclude' => $immovableNamespaces,
 307                                 ),
 308                                 'title' => array(
 309                                         'id' => 'wpNewTitleMain',
 310                                         'name' => 'wpNewTitleMain',
 311                                         'value' => $wgContLang->recodeForEdit( $newTitle->getText() ),
 312                                         // Inappropriate, since we're expecting the user to input a non-existent page's title
 313                                         'suggestions' => false,
 314                                 ),
 315                                 'infusable' => true,
 316                         ) ),
 317                         array(
 318                                 'label' => $this->msg( 'newtitle' )->text(),
 319                                 'align' => 'top',
 320                         )
 321                 );
 322
 323                 $fields[] = new OOUI\FieldLayout(
 324                         new OOUI\TextInputWidget( array(
 325                                 'name' => 'wpReason',
 326                                 'id' => 'wpReason',
 327                                 'maxLength' => 200,
 328                                 'infusable' => true,
 329                                 'value' => $this->reason,
 330                         ) ),
 331                         array(
 332                                 'label' => $this->msg( 'movereason' )->text(),
 333                                 'align' => 'top',
 334                         )
 335                 );
 336
 337                 if ( $considerTalk ) {
 338                         $fields[] = new OOUI\FieldLayout(
 339                                 new OOUI\CheckboxInputWidget( array(
 340                                         'name' => 'wpMovetalk',
 341                                         'id' => 'wpMovetalk',
 342                                         'value' => '1',
 343                                         'selected' => $this->moveTalk,
 344                                 ) ),
 345                                 array(
 346                                         'label' => $this->msg( 'movetalk' )->text(),
 347                                         'help' => new OOUI\HtmlSnippet( $this->msg( 'movepagetalktext' )->parseAsBlock() ),
 348                                         'align' => 'inline',
 349                                         'infusable' => true,
 350                                 )
 351                         );
 352                 }
 353
 354                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 355                         if ( $handler->supportsRedirects() ) {
 356                                 $isChecked = $this->leaveRedirect;
 357                                 $isDisabled = false;
 358                         } else {
 359                                 $isChecked = false;
 360                                 $isDisabled = true;
 361                         }
 362                         $fields[] = new OOUI\FieldLayout(
 363                                 new OOUI\CheckboxInputWidget( array(
 364                                         'name' => 'wpLeaveRedirect',
 365                                         'id' => 'wpLeaveRedirect',
 366                                         'value' => '1',
 367                                         'selected' => $isChecked,
 368                                         'disabled' => $isDisabled,
 369                                 ) ),
 370                                 array(
 371                                         'label' => $this->msg( 'move-leave-redirect' )->text(),
 372                                         'align' => 'inline',
 373                                 )
 374                         );
 375                 }
 376
 377                 if ( $hasRedirects ) {
 378                         $fields[] = new OOUI\FieldLayout(
 379                                 new OOUI\CheckboxInputWidget( array(
 380                                         'name' => 'wpFixRedirects',
 381                                         'id' => 'wpFixRedirects',
 382                                         'value' => '1',
 383                                         'selected' => $this->fixRedirects,
 384                                 ) ),
 385                                 array(
 386                                         'label' => $this->msg( 'fix-double-redirects' )->text(),
 387                                         'align' => 'inline',
 388                                 )
 389                         );
 390                 }
 391
 392                 if ( $canMoveSubpage ) {
 393                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 394                         $fields[] = new OOUI\FieldLayout(
 395                                 new OOUI\CheckboxInputWidget( array(
 396                                         'name' => 'wpMovesubpages',
 397                                         'id' => 'wpMovesubpages',
 398                                         'value' => '1',
 399                                         # Don't check the box if we only have talk subpages to
 400                                         # move and we aren't moving the talk page.
 401                                         'selected' => $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 402                                 ) ),
 403                                 array(
 404                                         'label' => new OOUI\HtmlSnippet(
 405                                                 $this->msg(
 406                                                         ( $this->oldTitle->hasSubpages()
 407                                                                 ? 'move-subpages'
 408                                                                 : 'move-talk-subpages' )
 409                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 410                                         ),
 411                                         'align' => 'inline',
 412                                 )
 413                         );
 414                 }
 415
 416                 # Don't allow watching if user is not logged in
 417                 if ( $user->isLoggedIn() ) {
 418                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 419                                 || $user->isWatched( $this->oldTitle ) );
 420                         $fields[] = new OOUI\FieldLayout(
 421                                 new OOUI\CheckboxInputWidget( array(
 422                                         'name' => 'wpWatch',
 423                                         'id' => 'watch', # ew
 424                                         'value' => '1',
 425                                         'selected' => $watchChecked,
 426                                 ) ),
 427                                 array(
 428                                         'label' => $this->msg( 'move-watch' )->text(),
 429                                         'align' => 'inline',
 430                                 )
 431                         );
 432                 }
 433
 434                 if ( $confirm ) {
 435                         $fields[] = new OOUI\FieldLayout(
 436                                 new OOUI\CheckboxInputWidget( array(
 437                                         'name' => 'wpConfirm',
 438                                         'id' => 'wpConfirm',
 439                                         'value' => '1',
 440                                 ) ),
 441                                 array(
 442                                         'label' => $this->msg( 'delete_and_move_confirm' )->text(),
 443                                         'align' => 'inline',
 444                                 )
 445                         );
 446                 }
 447
 448                 $fields[] = new OOUI\FieldLayout(
 449                         new OOUI\ButtonInputWidget( array(
 450                                 'name' => $submitVar,
 451                                 'value' => $movepagebtn,
 452                                 'label' => $movepagebtn,
 453                                 'flags' => array( 'constructive', 'primary' ),
 454                                 'type' => 'submit',
 455                         ) ),
 456                         array(
 457                                 'align' => 'top',
 458                         )
 459                 );
 460
 461                 $fieldset = new OOUI\FieldsetLayout( array(
 462                         'label' => $this->msg( 'move-page-legend' )->text(),
 463                         'id' => 'mw-movepage-table',
 464                         'items' => $fields,
 465                 ) );
 466
 467                 $form = new OOUI\FormLayout( array(
 468                         'method' => 'post',
 469                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 470                         'id' => 'movepage',
 471                 ) );
 472                 $form->appendContent(
 473                         $fieldset,
 474                         new OOUI\HtmlSnippet(
 475                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 476                                 Html::hidden( 'wpEditToken', $user->getEditToken() )
 477                         )
 478                 );
 479
 480                 $out->addHTML(
 481                         new OOUI\PanelLayout( array(
 482                                 'classes' => array( 'movepage-wrapper' ),
 483                                 'expanded' => false,
 484                                 'padded' => true,
 485                                 'framed' => true,
 486                                 'content' => $form,
 487                         ) )
 488                 );
 489
 490                 $this->showLogFragment( $this->oldTitle );
 491                 $this->showSubpages( $this->oldTitle );
 492         }
 493
 494         function doSubmit() {
 495                 $user = $this->getUser();
 496
 497                 if ( $user->pingLimiter( 'move' ) ) {
 498                         throw new ThrottledError;
 499                 }
 500
 501                 $ot = $this->oldTitle;
 502                 $nt = $this->newTitle;
 503
 504                 # don't allow moving to pages with # in
 505                 if ( !$nt || $nt->hasFragment() ) {
 506                         $this->showForm( array( array( 'badtitletext' ) ) );
 507
 508                         return;
 509                 }
 510
 511                 # Show a warning if the target file exists on a shared repo
 512                 if ( $nt->getNamespace() == NS_FILE
 513                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 514                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 515                         && wfFindFile( $nt )
 516                 ) {
 517                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 518
 519                         return;
 520                 }
 521
 522                 # Delete to make way if requested
 523                 if ( $this->deleteAndMove ) {
 524                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 525                         if ( count( $permErrors ) ) {
 526                                 # Only show the first error
 527                                 $this->showForm( $permErrors );
 528
 529                                 return;
 530                         }
 531
 532                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 533
 534                         // Delete an associated image if there is
 535                         if ( $nt->getNamespace() == NS_FILE ) {
 536                                 $file = wfLocalFile( $nt );
 537                                 $file->load( File::READ_LATEST );
 538                                 if ( $file->exists() ) {
 539                                         $file->delete( $reason, false, $user );
 540                                 }
 541                         }
 542
 543                         $error = ''; // passed by ref
 544                         $page = WikiPage::factory( $nt );
 545                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 546                         if ( !$deleteStatus->isGood() ) {
 547                                 $this->showForm( $deleteStatus->getErrorsArray() );
 548
 549                                 return;
 550                         }
 551                 }
 552
 553                 $handler = ContentHandler::getForTitle( $ot );
 554
 555                 if ( !$handler->supportsRedirects() ) {
 556                         $createRedirect = false;
 557                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 558                         $createRedirect = $this->leaveRedirect;
 559                 } else {
 560                         $createRedirect = true;
 561                 }
 562
 563                 # Do the actual move.
 564                 $mp = new MovePage( $ot, $nt );
 565                 $valid = $mp->isValidMove();
 566                 if ( !$valid->isOK() ) {
 567                         $this->showForm( $valid->getErrorsArray() );
 568                         return;
 569                 }
 570
 571                 $permStatus = $mp->checkPermissions( $user, $this->reason );
 572                 if ( !$permStatus->isOK() ) {
 573                         $this->showForm( $permStatus->getErrorsArray() );
 574                         return;
 575                 }
 576
 577                 $status = $mp->move( $user, $this->reason, $createRedirect );
 578                 if ( !$status->isOK() ) {
 579                         $this->showForm( $status->getErrorsArray() );
 580                         return;
 581                 }
 582
 583                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 584                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 585                 }
 586
 587                 $out = $this->getOutput();
 588                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 589
 590                 $oldLink = Linker::link(
 591                         $ot,
 592                         null,
 593                         array( 'id' => 'movepage-oldlink' ),
 594                         array( 'redirect' => 'no' )
 595                 );
 596                 $newLink = Linker::linkKnown(
 597                         $nt,
 598                         null,
 599                         array( 'id' => 'movepage-newlink' )
 600                 );
 601                 $oldText = $ot->getPrefixedText();
 602                 $newText = $nt->getPrefixedText();
 603
 604                 if ( $ot->exists() ) {
 605                         // NOTE: we assume that if the old title exists, it's because it was re-created as
 606                         // a redirect to the new title. This is not safe, but what we did before was
 607                         // even worse: we just determined whether a redirect should have been created,
 608                         // and reported that it was created if it should have, without any checks.
 609                         // Also note that isRedirect() is unreliable because of bug 37209.
 610                         $msgName = 'movepage-moved-redirect';
 611                 } else {
 612                         $msgName = 'movepage-moved-noredirect';
 613                 }
 614
 615                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 616                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 617                 $out->addWikiMsg( $msgName );
 618
 619                 Hooks::run( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 620
 621                 # Now we move extra pages we've been asked to move: subpages and talk
 622                 # pages.  First, if the old page or the new page is a talk page, we
 623                 # can't move any talk pages: cancel that.
 624                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 625                         $this->moveTalk = false;
 626                 }
 627
 628                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 629                         $this->moveSubpages = false;
 630                 }
 631
 632                 /**
 633                  * Next make a list of id's.  This might be marginally less efficient
 634                  * than a more direct method, but this is not a highly performance-cri-
 635                  * tical code path and readable code is more important here.
 636                  *
 637                  * Note: this query works nicely on MySQL 5, but the optimizer in MySQL
 638                  * 4 might get confused.  If so, consider rewriting as a UNION.
 639                  *
 640                  * If the target namespace doesn't allow subpages, moving with subpages
 641                  * would mean that you couldn't move them back in one operation, which
 642                  * is bad.
 643                  * @todo FIXME: A specific error message should be given in this case.
 644                  */
 645
 646                 // @todo FIXME: Use Title::moveSubpages() here
 647                 $dbr = wfGetDB( DB_MASTER );
 648                 if ( $this->moveSubpages && (
 649                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 650                                 $this->moveTalk
 651                                         && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 652                         )
 653                 ) ) {
 654                         $conds = array(
 655                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 656                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 657                         );
 658                         $conds['page_namespace'] = array();
 659                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 660                                 $conds['page_namespace'][] = $ot->getNamespace();
 661                         }
 662                         if ( $this->moveTalk &&
 663                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 664                         ) {
 665                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 666                         }
 667                 } elseif ( $this->moveTalk ) {
 668                         $conds = array(
 669                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 670                                 'page_title' => $ot->getDBkey()
 671                         );
 672                 } else {
 673                         # Skip the query
 674                         $conds = null;
 675                 }
 676
 677                 $extraPages = array();
 678                 if ( !is_null( $conds ) ) {
 679                         $extraPages = TitleArray::newFromResult(
 680                                 $dbr->select( 'page',
 681                                         array( 'page_id', 'page_namespace', 'page_title' ),
 682                                         $conds,
 683                                         __METHOD__
 684                                 )
 685                         );
 686                 }
 687
 688                 $extraOutput = array();
 689                 $count = 1;
 690                 foreach ( $extraPages as $oldSubpage ) {
 691                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 692                                 # Already did this one.
 693                                 continue;
 694                         }
 695
 696                         $newPageName = preg_replace(
 697                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 698                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 699                                 $oldSubpage->getDBkey()
 700                         );
 701
 702                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 703                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 704                                 $newNs = $nt->getNamespace();
 705                         } elseif ( $oldSubpage->isTalkPage() ) {
 706                                 $newNs = $nt->getTalkPage()->getNamespace();
 707                         } else {
 708                                 $newNs = $nt->getSubjectPage()->getNamespace();
 709                         }
 710
 711                         # Bug 14385: we need makeTitleSafe because the new page names may
 712                         # be longer than 255 characters.
 713                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 714                         if ( !$newSubpage ) {
 715                                 $oldLink = Linker::linkKnown( $oldSubpage );
 716                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 717                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 718                                 continue;
 719                         }
 720
 721                         # This was copy-pasted from Renameuser, bleh.
 722                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 723                                 $link = Linker::linkKnown( $newSubpage );
 724                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 725                         } else {
 726                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 727
 728                                 if ( $success === true ) {
 729                                         if ( $this->fixRedirects ) {
 730                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 731                                         }
 732                                         $oldLink = Linker::link(
 733                                                 $oldSubpage,
 734                                                 null,
 735                                                 array(),
 736                                                 array( 'redirect' => 'no' )
 737                                         );
 738
 739                                         $newLink = Linker::linkKnown( $newSubpage );
 740                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 741                                                 ->rawParams( $oldLink, $newLink )->escaped();
 742                                         ++$count;
 743
 744                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 745                                         if ( $count >= $maximumMovedPages ) {
 746                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 747                                                         ->numParams( $maximumMovedPages )->escaped();
 748                                                 break;
 749                                         }
 750                                 } else {
 751                                         $oldLink = Linker::linkKnown( $oldSubpage );
 752                                         $newLink = Linker::link( $newSubpage );
 753                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 754                                                 ->rawParams( $oldLink, $newLink )->escaped();
 755                                 }
 756                         }
 757                 }
 758
 759                 if ( $extraOutput !== array() ) {
 760                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 761                 }
 762
 763                 # Deal with watches (we don't watch subpages)
 764                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 765                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 766         }
 767
 768         function showLogFragment( $title ) {
 769                 $moveLogPage = new LogPage( 'move' );
 770                 $out = $this->getOutput();
 771                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 772                 LogEventsList::showLogExtract( $out, 'move', $title );
 773         }
 774
 775         function showSubpages( $title ) {
 776                 if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 777                         return;
 778                 }
 779
 780                 $subpages = $title->getSubpages();
 781                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 782
 783                 $out = $this->getOutput();
 784                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 785
 786                 # No subpages.
 787                 if ( $count == 0 ) {
 788                         $out->addWikiMsg( 'movenosubpage' );
 789
 790                         return;
 791                 }
 792
 793                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 794                 $out->addHTML( "<ul>\n" );
 795
 796                 foreach ( $subpages as $subpage ) {
 797                         $link = Linker::link( $subpage );
 798                         $out->addHTML( "<li>$link</li>\n" );
 799                 }
 800                 $out->addHTML( "</ul>\n" );
 801         }
 802
 803         protected function getGroupName() {
 804                 return 'pagetools';
 805         }
 806 }