includes/specials/SpecialMovepage.php

   1 <?php
   2 /**
   3  * Implements Special:Movepage
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * A special page that allows users to change page titles
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class MovePageForm extends UnlistedSpecialPage {
  30         /** @var Title */
  31         protected $oldTitle = null;
  32
  33         /** @var Title */
  34         protected $newTitle;
  35
  36         /** @var string Text input */
  37         protected $reason;
  38
  39         // Checks
  40
  41         /** @var bool */
  42         protected $moveTalk;
  43
  44         /** @var bool */
  45         protected $deleteAndMove;
  46
  47         /** @var bool */
  48         protected $moveSubpages;
  49
  50         /** @var bool */
  51         protected $fixRedirects;
  52
  53         /** @var bool */
  54         protected $leaveRedirect;
  55
  56         /** @var bool */
  57         protected $moveOverShared;
  58
  59         private $watch = false;
  60
  61         public function __construct() {
  62                 parent::__construct( 'Movepage' );
  63         }
  64
  65         public function doesWrites() {
  66                 return true;
  67         }
  68
  69         public function execute( $par ) {
  70                 $this->useTransactionalTimeLimit();
  71
  72                 $this->checkReadOnly();
  73
  74                 $this->setHeaders();
  75                 $this->outputHeader();
  76
  77                 $request = $this->getRequest();
  78                 $target = !is_null( $par ) ? $par : $request->getVal( 'target' );
  79
  80                 // Yes, the use of getVal() and getText() is wanted, see bug 20365
  81
  82                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  83                 $this->oldTitle = Title::newFromText( $oldTitleText );
  84
  85                 if ( !$this->oldTitle ) {
  86                         // Either oldTitle wasn't passed, or newFromText returned null
  87                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  88                 }
  89                 if ( !$this->oldTitle->exists() ) {
  90                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  91                 }
  92
  93                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  94                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  95                 // Backwards compatibility for forms submitting here from other sources
  96                 // which is more common than it should be..
  97                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
  98                 $this->newTitle = strlen( $newTitleText_bc ) > 0
  99                         ? Title::newFromText( $newTitleText_bc )
 100                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
 101
 102                 $user = $this->getUser();
 103
 104                 # Check rights
 105                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
 106                 if ( count( $permErrors ) ) {
 107                         // Auto-block user's IP if the account was "hard" blocked
 108                         DeferredUpdates::addCallableUpdate( function() use ( $user ) {
 109                                 $user->spreadAnyEditBlock();
 110                         } );
 111                         throw new PermissionsError( 'move', $permErrors );
 112                 }
 113
 114                 $def = !$request->wasPosted();
 115
 116                 $this->reason = $request->getText( 'wpReason' );
 117                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
 118                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
 119                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
 120                 $this->moveSubpages = $request->getBool( 'wpMovesubpages' );
 121                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' );
 122                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile' );
 123                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
 124
 125                 if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
 126                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
 127                 ) {
 128                         $this->doSubmit();
 129                 } else {
 130                         $this->showForm( [] );
 131                 }
 132         }
 133
 134         /**
 135          * Show the form
 136          *
 137          * @param array $err Error messages. Each item is an error message.
 138          *    It may either be a string message name or array message name and
 139          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 140          */
 141         function showForm( $err ) {
 142                 global $wgContLang;
 143
 144                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 145
 146                 $out = $this->getOutput();
 147                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 148                 $out->addModules( 'mediawiki.special.movePage' );
 149                 $out->addModuleStyles( 'mediawiki.special.movePage.styles' );
 150                 $this->addHelpLink( 'Help:Moving a page' );
 151
 152                 $out->addWikiMsg( $this->getConfig()->get( 'FixDoubleRedirects' ) ?
 153                         'movepagetext' :
 154                         'movepagetext-noredirectfixer'
 155                 );
 156
 157                 if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 158                         $out->wrapWikiMsg(
 159                                 "<div class=\"warningbox mw-moveuserpage-warning\">\n$1\n</div>",
 160                                 'moveuserpage-warning'
 161                         );
 162                 } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 163                         $out->wrapWikiMsg(
 164                                 "<div class=\"warningbox mw-movecategorypage-warning\">\n$1\n</div>",
 165                                 'movecategorypage-warning'
 166                         );
 167                 }
 168
 169                 $deleteAndMove = false;
 170                 $moveOverShared = false;
 171
 172                 $newTitle = $this->newTitle;
 173
 174                 if ( !$newTitle ) {
 175                         # Show the current title as a default
 176                         # when the form is first opened.
 177                         $newTitle = $this->oldTitle;
 178                 } elseif ( !count( $err ) ) {
 179                         # If a title was supplied, probably from the move log revert
 180                         # link, check for validity. We can then show some diagnostic
 181                         # information and save a click.
 182                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 183                         if ( is_array( $newerr ) ) {
 184                                 $err = $newerr;
 185                         }
 186                 }
 187
 188                 $user = $this->getUser();
 189
 190                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 191                         && $newTitle->quickUserCan( 'delete', $user )
 192                 ) {
 193                         $out->wrapWikiMsg(
 194                                 "<div class='warningbox'>\n$1\n</div>\n",
 195                                 [ 'delete_and_move_text', $newTitle->getPrefixedText() ]
 196                         );
 197                         $deleteAndMove = true;
 198                         $err = [];
 199                 }
 200
 201                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 202                         && $user->isAllowed( 'reupload-shared' )
 203                 ) {
 204                         $out->wrapWikiMsg(
 205                                 "<div class='warningbox'>\n$1\n</div>\n",
 206                                 [
 207                                         'move-over-sharedrepo',
 208                                         $newTitle->getPrefixedText()
 209                                 ]
 210                         );
 211                         $moveOverShared = true;
 212                         $err = [];
 213                 }
 214
 215                 $oldTalk = $this->oldTitle->getTalkPage();
 216                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 217                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 218
 219                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 220                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 221
 222                 # We also want to be able to move assoc. subpage talk-pages even if base page
 223                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 224                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 225                         ( $oldTalk->exists()
 226                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 227
 228                 $dbr = wfGetDB( DB_SLAVE );
 229                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 230                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 231                                 [
 232                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 233                                         'rd_title' => $this->oldTitle->getDBkey(),
 234                                 ], __METHOD__ );
 235                 } else {
 236                         $hasRedirects = false;
 237                 }
 238
 239                 if ( count( $err ) ) {
 240                         $out->addHTML( "<div class='errorbox'>\n" );
 241                         $action_desc = $this->msg( 'action-move' )->plain();
 242                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 243
 244                         if ( count( $err ) == 1 ) {
 245                                 $errMsg = $err[0];
 246                                 $errMsgName = array_shift( $errMsg );
 247
 248                                 if ( $errMsgName == 'hookaborted' ) {
 249                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 250                                 } else {
 251                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 252                                 }
 253                         } else {
 254                                 $errStr = [];
 255
 256                                 foreach ( $err as $errMsg ) {
 257                                         if ( $errMsg[0] == 'hookaborted' ) {
 258                                                 $errStr[] = $errMsg[1];
 259                                         } else {
 260                                                 $errMsgName = array_shift( $errMsg );
 261                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 262                                         }
 263                                 }
 264
 265                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 266                         }
 267                         $out->addHTML( "</div>\n" );
 268                 }
 269
 270                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 271                         # Is the title semi-protected?
 272                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 273                                 $noticeMsg = 'semiprotectedpagemovewarning';
 274                                 $classes[] = 'mw-textarea-sprotected';
 275                         } else {
 276                                 # Then it must be protected based on static groups (regular)
 277                                 $noticeMsg = 'protectedpagemovewarning';
 278                                 $classes[] = 'mw-textarea-protected';
 279                         }
 280                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 281                         $out->addWikiMsg( $noticeMsg );
 282                         LogEventsList::showLogExtract(
 283                                 $out,
 284                                 'protect',
 285                                 $this->oldTitle,
 286                                 '',
 287                                 [ 'lim' => 1 ]
 288                         );
 289                         $out->addHTML( "</div>\n" );
 290                 }
 291
 292                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 293                 // is enforced in the mediawiki.special.movePage module
 294
 295                 $immovableNamespaces = [];
 296                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 297                         if ( !MWNamespace::isMovable( $nsId ) ) {
 298                                 $immovableNamespaces[] = $nsId;
 299                         }
 300                 }
 301
 302                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 303
 304                 $out->enableOOUI();
 305                 $fields = [];
 306
 307                 $fields[] = new OOUI\FieldLayout(
 308                         new MediaWiki\Widget\ComplexTitleInputWidget( [
 309                                 'id' => 'wpNewTitle',
 310                                 'namespace' => [
 311                                         'id' => 'wpNewTitleNs',
 312                                         'name' => 'wpNewTitleNs',
 313                                         'value' => $newTitle->getNamespace(),
 314                                         'exclude' => $immovableNamespaces,
 315                                 ],
 316                                 'title' => [
 317                                         'id' => 'wpNewTitleMain',
 318                                         'name' => 'wpNewTitleMain',
 319                                         'value' => $wgContLang->recodeForEdit( $newTitle->getText() ),
 320                                         // Inappropriate, since we're expecting the user to input a non-existent page's title
 321                                         'suggestions' => false,
 322                                 ],
 323                                 'infusable' => true,
 324                         ] ),
 325                         [
 326                                 'label' => $this->msg( 'newtitle' )->text(),
 327                                 'align' => 'top',
 328                         ]
 329                 );
 330
 331                 $fields[] = new OOUI\FieldLayout(
 332                         new OOUI\TextInputWidget( [
 333                                 'name' => 'wpReason',
 334                                 'id' => 'wpReason',
 335                                 'maxLength' => 200,
 336                                 'infusable' => true,
 337                                 'value' => $this->reason,
 338                         ] ),
 339                         [
 340                                 'label' => $this->msg( 'movereason' )->text(),
 341                                 'align' => 'top',
 342                         ]
 343                 );
 344
 345                 if ( $considerTalk ) {
 346                         $fields[] = new OOUI\FieldLayout(
 347                                 new OOUI\CheckboxInputWidget( [
 348                                         'name' => 'wpMovetalk',
 349                                         'id' => 'wpMovetalk',
 350                                         'value' => '1',
 351                                         'selected' => $this->moveTalk,
 352                                 ] ),
 353                                 [
 354                                         'label' => $this->msg( 'movetalk' )->text(),
 355                                         'help' => new OOUI\HtmlSnippet( $this->msg( 'movepagetalktext' )->parseAsBlock() ),
 356                                         'align' => 'inline',
 357                                         'infusable' => true,
 358                                 ]
 359                         );
 360                 }
 361
 362                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 363                         if ( $handler->supportsRedirects() ) {
 364                                 $isChecked = $this->leaveRedirect;
 365                                 $isDisabled = false;
 366                         } else {
 367                                 $isChecked = false;
 368                                 $isDisabled = true;
 369                         }
 370                         $fields[] = new OOUI\FieldLayout(
 371                                 new OOUI\CheckboxInputWidget( [
 372                                         'name' => 'wpLeaveRedirect',
 373                                         'id' => 'wpLeaveRedirect',
 374                                         'value' => '1',
 375                                         'selected' => $isChecked,
 376                                         'disabled' => $isDisabled,
 377                                 ] ),
 378                                 [
 379                                         'label' => $this->msg( 'move-leave-redirect' )->text(),
 380                                         'align' => 'inline',
 381                                 ]
 382                         );
 383                 }
 384
 385                 if ( $hasRedirects ) {
 386                         $fields[] = new OOUI\FieldLayout(
 387                                 new OOUI\CheckboxInputWidget( [
 388                                         'name' => 'wpFixRedirects',
 389                                         'id' => 'wpFixRedirects',
 390                                         'value' => '1',
 391                                         'selected' => $this->fixRedirects,
 392                                 ] ),
 393                                 [
 394                                         'label' => $this->msg( 'fix-double-redirects' )->text(),
 395                                         'align' => 'inline',
 396                                 ]
 397                         );
 398                 }
 399
 400                 if ( $canMoveSubpage ) {
 401                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 402                         $fields[] = new OOUI\FieldLayout(
 403                                 new OOUI\CheckboxInputWidget( [
 404                                         'name' => 'wpMovesubpages',
 405                                         'id' => 'wpMovesubpages',
 406                                         'value' => '1',
 407                                         # Don't check the box if we only have talk subpages to
 408                                         # move and we aren't moving the talk page.
 409                                         'selected' => $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 410                                 ] ),
 411                                 [
 412                                         'label' => new OOUI\HtmlSnippet(
 413                                                 $this->msg(
 414                                                         ( $this->oldTitle->hasSubpages()
 415                                                                 ? 'move-subpages'
 416                                                                 : 'move-talk-subpages' )
 417                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 418                                         ),
 419                                         'align' => 'inline',
 420                                 ]
 421                         );
 422                 }
 423
 424                 # Don't allow watching if user is not logged in
 425                 if ( $user->isLoggedIn() ) {
 426                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 427                                 || $user->isWatched( $this->oldTitle ) );
 428                         $fields[] = new OOUI\FieldLayout(
 429                                 new OOUI\CheckboxInputWidget( [
 430                                         'name' => 'wpWatch',
 431                                         'id' => 'watch', # ew
 432                                         'value' => '1',
 433                                         'selected' => $watchChecked,
 434                                 ] ),
 435                                 [
 436                                         'label' => $this->msg( 'move-watch' )->text(),
 437                                         'align' => 'inline',
 438                                 ]
 439                         );
 440                 }
 441
 442                 $hiddenFields = '';
 443                 if ( $moveOverShared ) {
 444                         $hiddenFields .= Html::hidden( 'wpMoveOverSharedFile', '1' );
 445                 }
 446
 447                 if ( $deleteAndMove ) {
 448                         $fields[] = new OOUI\FieldLayout(
 449                                 new OOUI\CheckboxInputWidget( [
 450                                         'name' => 'wpDeleteAndMove',
 451                                         'id' => 'wpDeleteAndMove',
 452                                         'value' => '1',
 453                                 ] ),
 454                                 [
 455                                         'label' => $this->msg( 'delete_and_move_confirm' )->text(),
 456                                         'align' => 'inline',
 457                                 ]
 458                         );
 459                 }
 460
 461                 $fields[] = new OOUI\FieldLayout(
 462                         new OOUI\ButtonInputWidget( [
 463                                 'name' => 'wpMove',
 464                                 'value' => $this->msg( 'movepagebtn' )->text(),
 465                                 'label' => $this->msg( 'movepagebtn' )->text(),
 466                                 'flags' => [ 'constructive', 'primary' ],
 467                                 'type' => 'submit',
 468                         ] ),
 469                         [
 470                                 'align' => 'top',
 471                         ]
 472                 );
 473
 474                 $fieldset = new OOUI\FieldsetLayout( [
 475                         'label' => $this->msg( 'move-page-legend' )->text(),
 476                         'id' => 'mw-movepage-table',
 477                         'items' => $fields,
 478                 ] );
 479
 480                 $form = new OOUI\FormLayout( [
 481                         'method' => 'post',
 482                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 483                         'id' => 'movepage',
 484                 ] );
 485                 $form->appendContent(
 486                         $fieldset,
 487                         new OOUI\HtmlSnippet(
 488                                 $hiddenFields .
 489                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 490                                 Html::hidden( 'wpEditToken', $user->getEditToken() )
 491                         )
 492                 );
 493
 494                 $out->addHTML(
 495                         new OOUI\PanelLayout( [
 496                                 'classes' => [ 'movepage-wrapper' ],
 497                                 'expanded' => false,
 498                                 'padded' => true,
 499                                 'framed' => true,
 500                                 'content' => $form,
 501                         ] )
 502                 );
 503
 504                 $this->showLogFragment( $this->oldTitle );
 505                 $this->showSubpages( $this->oldTitle );
 506         }
 507
 508         function doSubmit() {
 509                 $user = $this->getUser();
 510
 511                 if ( $user->pingLimiter( 'move' ) ) {
 512                         throw new ThrottledError;
 513                 }
 514
 515                 $ot = $this->oldTitle;
 516                 $nt = $this->newTitle;
 517
 518                 # don't allow moving to pages with # in
 519                 if ( !$nt || $nt->hasFragment() ) {
 520                         $this->showForm( [ [ 'badtitletext' ] ] );
 521
 522                         return;
 523                 }
 524
 525                 # Show a warning if the target file exists on a shared repo
 526                 if ( $nt->getNamespace() == NS_FILE
 527                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 528                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 529                         && wfFindFile( $nt )
 530                 ) {
 531                         $this->showForm( [ [ 'file-exists-sharedrepo' ] ] );
 532
 533                         return;
 534                 }
 535
 536                 # Delete to make way if requested
 537                 if ( $this->deleteAndMove ) {
 538                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 539                         if ( count( $permErrors ) ) {
 540                                 # Only show the first error
 541                                 $this->showForm( $permErrors );
 542
 543                                 return;
 544                         }
 545
 546                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 547
 548                         // Delete an associated image if there is
 549                         if ( $nt->getNamespace() == NS_FILE ) {
 550                                 $file = wfLocalFile( $nt );
 551                                 $file->load( File::READ_LATEST );
 552                                 if ( $file->exists() ) {
 553                                         $file->delete( $reason, false, $user );
 554                                 }
 555                         }
 556
 557                         $error = ''; // passed by ref
 558                         $page = WikiPage::factory( $nt );
 559                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 560                         if ( !$deleteStatus->isGood() ) {
 561                                 $this->showForm( $deleteStatus->getErrorsArray() );
 562
 563                                 return;
 564                         }
 565                 }
 566
 567                 $handler = ContentHandler::getForTitle( $ot );
 568
 569                 if ( !$handler->supportsRedirects() ) {
 570                         $createRedirect = false;
 571                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 572                         $createRedirect = $this->leaveRedirect;
 573                 } else {
 574                         $createRedirect = true;
 575                 }
 576
 577                 # Do the actual move.
 578                 $mp = new MovePage( $ot, $nt );
 579                 $valid = $mp->isValidMove();
 580                 if ( !$valid->isOK() ) {
 581                         $this->showForm( $valid->getErrorsArray() );
 582                         return;
 583                 }
 584
 585                 $permStatus = $mp->checkPermissions( $user, $this->reason );
 586                 if ( !$permStatus->isOK() ) {
 587                         $this->showForm( $permStatus->getErrorsArray() );
 588                         return;
 589                 }
 590
 591                 $status = $mp->move( $user, $this->reason, $createRedirect );
 592                 if ( !$status->isOK() ) {
 593                         $this->showForm( $status->getErrorsArray() );
 594                         return;
 595                 }
 596
 597                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 598                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 599                 }
 600
 601                 $out = $this->getOutput();
 602                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 603
 604                 $oldLink = Linker::link(
 605                         $ot,
 606                         null,
 607                         [ 'id' => 'movepage-oldlink' ],
 608                         [ 'redirect' => 'no' ]
 609                 );
 610                 $newLink = Linker::linkKnown(
 611                         $nt,
 612                         null,
 613                         [ 'id' => 'movepage-newlink' ]
 614                 );
 615                 $oldText = $ot->getPrefixedText();
 616                 $newText = $nt->getPrefixedText();
 617
 618                 if ( $ot->exists() ) {
 619                         // NOTE: we assume that if the old title exists, it's because it was re-created as
 620                         // a redirect to the new title. This is not safe, but what we did before was
 621                         // even worse: we just determined whether a redirect should have been created,
 622                         // and reported that it was created if it should have, without any checks.
 623                         // Also note that isRedirect() is unreliable because of bug 37209.
 624                         $msgName = 'movepage-moved-redirect';
 625                 } else {
 626                         $msgName = 'movepage-moved-noredirect';
 627                 }
 628
 629                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 630                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 631                 $out->addWikiMsg( $msgName );
 632
 633                 Hooks::run( 'SpecialMovepageAfterMove', [ &$this, &$ot, &$nt ] );
 634
 635                 # Now we move extra pages we've been asked to move: subpages and talk
 636                 # pages.  First, if the old page or the new page is a talk page, we
 637                 # can't move any talk pages: cancel that.
 638                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 639                         $this->moveTalk = false;
 640                 }
 641
 642                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 643                         $this->moveSubpages = false;
 644                 }
 645
 646                 /**
 647                  * Next make a list of id's.  This might be marginally less efficient
 648                  * than a more direct method, but this is not a highly performance-cri-
 649                  * tical code path and readable code is more important here.
 650                  *
 651                  * If the target namespace doesn't allow subpages, moving with subpages
 652                  * would mean that you couldn't move them back in one operation, which
 653                  * is bad.
 654                  * @todo FIXME: A specific error message should be given in this case.
 655                  */
 656
 657                 // @todo FIXME: Use Title::moveSubpages() here
 658                 $dbr = wfGetDB( DB_MASTER );
 659                 if ( $this->moveSubpages && (
 660                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 661                                 $this->moveTalk
 662                                         && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 663                         )
 664                 ) ) {
 665                         $conds = [
 666                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 667                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 668                         ];
 669                         $conds['page_namespace'] = [];
 670                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 671                                 $conds['page_namespace'][] = $ot->getNamespace();
 672                         }
 673                         if ( $this->moveTalk &&
 674                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 675                         ) {
 676                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 677                         }
 678                 } elseif ( $this->moveTalk ) {
 679                         $conds = [
 680                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 681                                 'page_title' => $ot->getDBkey()
 682                         ];
 683                 } else {
 684                         # Skip the query
 685                         $conds = null;
 686                 }
 687
 688                 $extraPages = [];
 689                 if ( !is_null( $conds ) ) {
 690                         $extraPages = TitleArray::newFromResult(
 691                                 $dbr->select( 'page',
 692                                         [ 'page_id', 'page_namespace', 'page_title' ],
 693                                         $conds,
 694                                         __METHOD__
 695                                 )
 696                         );
 697                 }
 698
 699                 $extraOutput = [];
 700                 $count = 1;
 701                 foreach ( $extraPages as $oldSubpage ) {
 702                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 703                                 # Already did this one.
 704                                 continue;
 705                         }
 706
 707                         $newPageName = preg_replace(
 708                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 709                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 710                                 $oldSubpage->getDBkey()
 711                         );
 712
 713                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 714                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 715                                 $newNs = $nt->getNamespace();
 716                         } elseif ( $oldSubpage->isTalkPage() ) {
 717                                 $newNs = $nt->getTalkPage()->getNamespace();
 718                         } else {
 719                                 $newNs = $nt->getSubjectPage()->getNamespace();
 720                         }
 721
 722                         # Bug 14385: we need makeTitleSafe because the new page names may
 723                         # be longer than 255 characters.
 724                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 725                         if ( !$newSubpage ) {
 726                                 $oldLink = Linker::linkKnown( $oldSubpage );
 727                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 728                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 729                                 continue;
 730                         }
 731
 732                         # This was copy-pasted from Renameuser, bleh.
 733                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 734                                 $link = Linker::linkKnown( $newSubpage );
 735                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 736                         } else {
 737                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 738
 739                                 if ( $success === true ) {
 740                                         if ( $this->fixRedirects ) {
 741                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 742                                         }
 743                                         $oldLink = Linker::link(
 744                                                 $oldSubpage,
 745                                                 null,
 746                                                 [],
 747                                                 [ 'redirect' => 'no' ]
 748                                         );
 749
 750                                         $newLink = Linker::linkKnown( $newSubpage );
 751                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 752                                                 ->rawParams( $oldLink, $newLink )->escaped();
 753                                         ++$count;
 754
 755                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 756                                         if ( $count >= $maximumMovedPages ) {
 757                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 758                                                         ->numParams( $maximumMovedPages )->escaped();
 759                                                 break;
 760                                         }
 761                                 } else {
 762                                         $oldLink = Linker::linkKnown( $oldSubpage );
 763                                         $newLink = Linker::link( $newSubpage );
 764                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 765                                                 ->rawParams( $oldLink, $newLink )->escaped();
 766                                 }
 767                         }
 768                 }
 769
 770                 if ( $extraOutput !== [] ) {
 771                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 772                 }
 773
 774                 # Deal with watches (we don't watch subpages)
 775                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 776                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 777         }
 778
 779         function showLogFragment( $title ) {
 780                 $moveLogPage = new LogPage( 'move' );
 781                 $out = $this->getOutput();
 782                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 783                 LogEventsList::showLogExtract( $out, 'move', $title );
 784         }
 785
 786         function showSubpages( $title ) {
 787                 if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 788                         return;
 789                 }
 790
 791                 $subpages = $title->getSubpages();
 792                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 793
 794                 $out = $this->getOutput();
 795                 $out->wrapWikiMsg( '== $1 ==', [ 'movesubpage', $count ] );
 796
 797                 # No subpages.
 798                 if ( $count == 0 ) {
 799                         $out->addWikiMsg( 'movenosubpage' );
 800
 801                         return;
 802                 }
 803
 804                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 805                 $out->addHTML( "<ul>\n" );
 806
 807                 foreach ( $subpages as $subpage ) {
 808                         $link = Linker::link( $subpage );
 809                         $out->addHTML( "<li>$link</li>\n" );
 810                 }
 811                 $out->addHTML( "</ul>\n" );
 812         }
 813
 814         /**
 815          * Return an array of subpages beginning with $search that this special page will accept.
 816          *
 817          * @param string $search Prefix to search for
 818          * @param int $limit Maximum number of results to return (usually 10)
 819          * @param int $offset Number of results to skip (usually 0)
 820          * @return string[] Matching subpages
 821          */
 822         public function prefixSearchSubpages( $search, $limit, $offset ) {
 823                 return $this->prefixSearchString( $search, $limit, $offset );
 824         }
 825
 826         protected function getGroupName() {
 827                 return 'pagetools';
 828         }
 829 }