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 use MediaWiki\MediaWikiServices;
  25
  26 /**
  27  * A special page that allows users to change page titles
  28  *
  29  * @ingroup SpecialPage
  30  */
  31 class MovePageForm extends UnlistedSpecialPage {
  32         /** @var Title */
  33         protected $oldTitle = null;
  34
  35         /** @var Title */
  36         protected $newTitle;
  37
  38         /** @var string Text input */
  39         protected $reason;
  40
  41         // Checks
  42
  43         /** @var bool */
  44         protected $moveTalk;
  45
  46         /** @var bool */
  47         protected $deleteAndMove;
  48
  49         /** @var bool */
  50         protected $moveSubpages;
  51
  52         /** @var bool */
  53         protected $fixRedirects;
  54
  55         /** @var bool */
  56         protected $leaveRedirect;
  57
  58         /** @var bool */
  59         protected $moveOverShared;
  60
  61         private $watch = false;
  62
  63         public function __construct() {
  64                 parent::__construct( 'Movepage' );
  65         }
  66
  67         public function doesWrites() {
  68                 return true;
  69         }
  70
  71         public function execute( $par ) {
  72                 $this->useTransactionalTimeLimit();
  73
  74                 $this->checkReadOnly();
  75
  76                 $this->setHeaders();
  77                 $this->outputHeader();
  78
  79                 $request = $this->getRequest();
  80                 $target = $par ?? $request->getVal( 'target' );
  81
  82                 // Yes, the use of getVal() and getText() is wanted, see T22365
  83
  84                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  85                 $this->oldTitle = Title::newFromText( $oldTitleText );
  86
  87                 if ( !$this->oldTitle ) {
  88                         // Either oldTitle wasn't passed, or newFromText returned null
  89                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  90                 }
  91                 if ( !$this->oldTitle->exists() ) {
  92                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  93                 }
  94
  95                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  96                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  97                 // Backwards compatibility for forms submitting here from other sources
  98                 // which is more common than it should be..
  99                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
 100                 $this->newTitle = strlen( $newTitleText_bc ) > 0
 101                         ? Title::newFromText( $newTitleText_bc )
 102                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
 103
 104                 $user = $this->getUser();
 105
 106                 # Check rights
 107                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
 108                 if ( count( $permErrors ) ) {
 109                         // Auto-block user's IP if the account was "hard" blocked
 110                         DeferredUpdates::addCallableUpdate( function () use ( $user ) {
 111                                 $user->spreadAnyEditBlock();
 112                         } );
 113                         throw new PermissionsError( 'move', $permErrors );
 114                 }
 115
 116                 $def = !$request->wasPosted();
 117
 118                 $this->reason = $request->getText( 'wpReason' );
 119                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
 120                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
 121                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
 122                 $this->moveSubpages = $request->getBool( 'wpMovesubpages' );
 123                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' );
 124                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile' );
 125                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
 126
 127                 if ( $request->getVal( 'action' ) == 'submit' && $request->wasPosted()
 128                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
 129                 ) {
 130                         $this->doSubmit();
 131                 } else {
 132                         $this->showForm( [] );
 133                 }
 134         }
 135
 136         /**
 137          * Show the form
 138          *
 139          * @param array $err Error messages. Each item is an error message.
 140          *    It may either be a string message name or array message name and
 141          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 142          * @param bool $isPermError Whether the error message is about user permissions.
 143          */
 144         function showForm( $err, $isPermError = false ) {
 145                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 146
 147                 $out = $this->getOutput();
 148                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 149                 $out->addModuleStyles( 'mediawiki.special' );
 150                 $out->addModules( 'mediawiki.misc-authed-ooui' );
 151                 $this->addHelpLink( 'Help:Moving a page' );
 152
 153                 $handlerSupportsRedirects = ContentHandler::getForTitle( $this->oldTitle )
 154                         ->supportsRedirects();
 155
 156                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 157                         $out->addWikiMsg( 'movepagetext' );
 158                 } else {
 159                         $out->addWikiMsg( $handlerSupportsRedirects ?
 160                                 'movepagetext-noredirectfixer' :
 161                                 'movepagetext-noredirectsupport' );
 162                 }
 163
 164                 if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 165                         $out->wrapWikiMsg(
 166                                 "<div class=\"warningbox mw-moveuserpage-warning\">\n$1\n</div>",
 167                                 'moveuserpage-warning'
 168                         );
 169                 } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 170                         $out->wrapWikiMsg(
 171                                 "<div class=\"warningbox mw-movecategorypage-warning\">\n$1\n</div>",
 172                                 'movecategorypage-warning'
 173                         );
 174                 }
 175
 176                 $deleteAndMove = false;
 177                 $moveOverShared = false;
 178
 179                 $user = $this->getUser();
 180
 181                 $newTitle = $this->newTitle;
 182
 183                 if ( !$newTitle ) {
 184                         # Show the current title as a default
 185                         # when the form is first opened.
 186                         $newTitle = $this->oldTitle;
 187                 } elseif ( !count( $err ) ) {
 188                         # If a title was supplied, probably from the move log revert
 189                         # link, check for validity. We can then show some diagnostic
 190                         # information and save a click.
 191                         $mp = new MovePage( $this->oldTitle, $newTitle );
 192                         $status = $mp->isValidMove();
 193                         $status->merge( $mp->checkPermissions( $user, null ) );
 194                         if ( $status->getErrors() ) {
 195                                 $err = $status->getErrorsArray();
 196                         }
 197                 }
 198
 199                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 200                         && MediaWikiServices::getInstance()->getPermissionManager()
 201                                  ->quickUserCan( 'delete', $user, $newTitle )
 202                 ) {
 203                         $out->wrapWikiMsg(
 204                                 "<div class='warningbox'>\n$1\n</div>\n",
 205                                 [ 'delete_and_move_text', $newTitle->getPrefixedText() ]
 206                         );
 207                         $deleteAndMove = true;
 208                         $err = [];
 209                 }
 210
 211                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 212                         && $user->isAllowed( 'reupload-shared' )
 213                 ) {
 214                         $out->wrapWikiMsg(
 215                                 "<div class='warningbox'>\n$1\n</div>\n",
 216                                 [
 217                                         'move-over-sharedrepo',
 218                                         $newTitle->getPrefixedText()
 219                                 ]
 220                         );
 221                         $moveOverShared = true;
 222                         $err = [];
 223                 }
 224
 225                 $oldTalk = $this->oldTitle->getTalkPage();
 226                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 227                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 228
 229                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 230                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 231
 232                 # We also want to be able to move assoc. subpage talk-pages even if base page
 233                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 234                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 235                         ( $oldTalk->exists()
 236                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 237
 238                 $dbr = wfGetDB( DB_REPLICA );
 239                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 240                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 241                                 [
 242                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 243                                         'rd_title' => $this->oldTitle->getDBkey(),
 244                                 ], __METHOD__ );
 245                 } else {
 246                         $hasRedirects = false;
 247                 }
 248
 249                 if ( count( $err ) ) {
 250                         if ( $isPermError ) {
 251                                 $action_desc = $this->msg( 'action-move' )->plain();
 252                                 $errMsgHtml = $this->msg( 'permissionserrorstext-withaction',
 253                                         count( $err ), $action_desc )->parseAsBlock();
 254                         } else {
 255                                 $errMsgHtml = $this->msg( 'cannotmove', count( $err ) )->parseAsBlock();
 256                         }
 257
 258                         if ( count( $err ) == 1 ) {
 259                                 $errMsg = $err[0];
 260                                 $errMsgName = array_shift( $errMsg );
 261
 262                                 if ( $errMsgName == 'hookaborted' ) {
 263                                         $errMsgHtml .= "<p>{$errMsg[0]}</p>\n";
 264                                 } else {
 265                                         $errMsgHtml .= $this->msg( $errMsgName, $errMsg )->parseAsBlock();
 266                                 }
 267                         } else {
 268                                 $errStr = [];
 269
 270                                 foreach ( $err as $errMsg ) {
 271                                         if ( $errMsg[0] == 'hookaborted' ) {
 272                                                 $errStr[] = $errMsg[1];
 273                                         } else {
 274                                                 $errMsgName = array_shift( $errMsg );
 275                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 276                                         }
 277                                 }
 278
 279                                 $errMsgHtml .= '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n";
 280                         }
 281                         $out->addHTML( Html::errorBox( $errMsgHtml ) );
 282                 }
 283
 284                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 285                         # Is the title semi-protected?
 286                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 287                                 $noticeMsg = 'semiprotectedpagemovewarning';
 288                                 $classes[] = 'mw-textarea-sprotected';
 289                         } else {
 290                                 # Then it must be protected based on static groups (regular)
 291                                 $noticeMsg = 'protectedpagemovewarning';
 292                                 $classes[] = 'mw-textarea-protected';
 293                         }
 294                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 295                         $out->addWikiMsg( $noticeMsg );
 296                         LogEventsList::showLogExtract(
 297                                 $out,
 298                                 'protect',
 299                                 $this->oldTitle,
 300                                 '',
 301                                 [ 'lim' => 1 ]
 302                         );
 303                         $out->addHTML( "</div>\n" );
 304                 }
 305
 306                 // Length limit for wpReason and wpNewTitleMain is enforced in the
 307                 // mediawiki.special.movePage module
 308
 309                 $immovableNamespaces = [];
 310                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 311                         if ( !MediaWikiServices::getInstance()->getNamespaceInfo()->isMovable( $nsId ) ) {
 312                                 $immovableNamespaces[] = $nsId;
 313                         }
 314                 }
 315
 316                 $out->enableOOUI();
 317                 $fields = [];
 318
 319                 $fields[] = new OOUI\FieldLayout(
 320                         new MediaWiki\Widget\ComplexTitleInputWidget( [
 321                                 'id' => 'wpNewTitle',
 322                                 'namespace' => [
 323                                         'id' => 'wpNewTitleNs',
 324                                         'name' => 'wpNewTitleNs',
 325                                         'value' => $newTitle->getNamespace(),
 326                                         'exclude' => $immovableNamespaces,
 327                                 ],
 328                                 'title' => [
 329                                         'id' => 'wpNewTitleMain',
 330                                         'name' => 'wpNewTitleMain',
 331                                         'value' => $newTitle->getText(),
 332                                         // Inappropriate, since we're expecting the user to input a non-existent page's title
 333                                         'suggestions' => false,
 334                                 ],
 335                                 'infusable' => true,
 336                         ] ),
 337                         [
 338                                 'label' => $this->msg( 'newtitle' )->text(),
 339                                 'align' => 'top',
 340                         ]
 341                 );
 342
 343                 // HTML maxlength uses "UTF-16 code units", which means that characters outside BMP
 344                 // (e.g. emojis) count for two each. This limit is overridden in JS to instead count
 345                 // Unicode codepoints.
 346                 $fields[] = new OOUI\FieldLayout(
 347                         new OOUI\TextInputWidget( [
 348                                 'name' => 'wpReason',
 349                                 'id' => 'wpReason',
 350                                 'maxLength' => CommentStore::COMMENT_CHARACTER_LIMIT,
 351                                 'infusable' => true,
 352                                 'value' => $this->reason,
 353                         ] ),
 354                         [
 355                                 'label' => $this->msg( 'movereason' )->text(),
 356                                 'align' => 'top',
 357                         ]
 358                 );
 359
 360                 if ( $considerTalk ) {
 361                         $fields[] = new OOUI\FieldLayout(
 362                                 new OOUI\CheckboxInputWidget( [
 363                                         'name' => 'wpMovetalk',
 364                                         'id' => 'wpMovetalk',
 365                                         'value' => '1',
 366                                         'selected' => $this->moveTalk,
 367                                 ] ),
 368                                 [
 369                                         'label' => $this->msg( 'movetalk' )->text(),
 370                                         'help' => new OOUI\HtmlSnippet( $this->msg( 'movepagetalktext' )->parseAsBlock() ),
 371                                         'helpInline' => true,
 372                                         'align' => 'inline',
 373                                         'id' => 'wpMovetalk-field',
 374                                 ]
 375                         );
 376                 }
 377
 378                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 379                         if ( $handlerSupportsRedirects ) {
 380                                 $isChecked = $this->leaveRedirect;
 381                                 $isDisabled = false;
 382                         } else {
 383                                 $isChecked = false;
 384                                 $isDisabled = true;
 385                         }
 386                         $fields[] = new OOUI\FieldLayout(
 387                                 new OOUI\CheckboxInputWidget( [
 388                                         'name' => 'wpLeaveRedirect',
 389                                         'id' => 'wpLeaveRedirect',
 390                                         'value' => '1',
 391                                         'selected' => $isChecked,
 392                                         'disabled' => $isDisabled,
 393                                 ] ),
 394                                 [
 395                                         'label' => $this->msg( 'move-leave-redirect' )->text(),
 396                                         'align' => 'inline',
 397                                 ]
 398                         );
 399                 }
 400
 401                 if ( $hasRedirects ) {
 402                         $fields[] = new OOUI\FieldLayout(
 403                                 new OOUI\CheckboxInputWidget( [
 404                                         'name' => 'wpFixRedirects',
 405                                         'id' => 'wpFixRedirects',
 406                                         'value' => '1',
 407                                         'selected' => $this->fixRedirects,
 408                                 ] ),
 409                                 [
 410                                         'label' => $this->msg( 'fix-double-redirects' )->text(),
 411                                         'align' => 'inline',
 412                                 ]
 413                         );
 414                 }
 415
 416                 if ( $canMoveSubpage ) {
 417                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 418                         $fields[] = new OOUI\FieldLayout(
 419                                 new OOUI\CheckboxInputWidget( [
 420                                         'name' => 'wpMovesubpages',
 421                                         'id' => 'wpMovesubpages',
 422                                         'value' => '1',
 423                                         'selected' => true, // T222953 Always check the box
 424                                 ] ),
 425                                 [
 426                                         'label' => new OOUI\HtmlSnippet(
 427                                                 $this->msg(
 428                                                         ( $this->oldTitle->hasSubpages()
 429                                                                 ? 'move-subpages'
 430                                                                 : 'move-talk-subpages' )
 431                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 432                                         ),
 433                                         'align' => 'inline',
 434                                 ]
 435                         );
 436                 }
 437
 438                 # Don't allow watching if user is not logged in
 439                 if ( $user->isLoggedIn() ) {
 440                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 441                                 || $user->isWatched( $this->oldTitle ) );
 442                         $fields[] = new OOUI\FieldLayout(
 443                                 new OOUI\CheckboxInputWidget( [
 444                                         'name' => 'wpWatch',
 445                                         'id' => 'watch', # ew
 446                                         'value' => '1',
 447                                         'selected' => $watchChecked,
 448                                 ] ),
 449                                 [
 450                                         'label' => $this->msg( 'move-watch' )->text(),
 451                                         'align' => 'inline',
 452                                 ]
 453                         );
 454                 }
 455
 456                 $hiddenFields = '';
 457                 if ( $moveOverShared ) {
 458                         $hiddenFields .= Html::hidden( 'wpMoveOverSharedFile', '1' );
 459                 }
 460
 461                 if ( $deleteAndMove ) {
 462                         $fields[] = new OOUI\FieldLayout(
 463                                 new OOUI\CheckboxInputWidget( [
 464                                         'name' => 'wpDeleteAndMove',
 465                                         'id' => 'wpDeleteAndMove',
 466                                         'value' => '1',
 467                                 ] ),
 468                                 [
 469                                         'label' => $this->msg( 'delete_and_move_confirm' )->text(),
 470                                         'align' => 'inline',
 471                                 ]
 472                         );
 473                 }
 474
 475                 $fields[] = new OOUI\FieldLayout(
 476                         new OOUI\ButtonInputWidget( [
 477                                 'name' => 'wpMove',
 478                                 'value' => $this->msg( 'movepagebtn' )->text(),
 479                                 'label' => $this->msg( 'movepagebtn' )->text(),
 480                                 'flags' => [ 'primary', 'progressive' ],
 481                                 'type' => 'submit',
 482                         ] ),
 483                         [
 484                                 'align' => 'top',
 485                         ]
 486                 );
 487
 488                 $fieldset = new OOUI\FieldsetLayout( [
 489                         'label' => $this->msg( 'move-page-legend' )->text(),
 490                         'id' => 'mw-movepage-table',
 491                         'items' => $fields,
 492                 ] );
 493
 494                 $form = new OOUI\FormLayout( [
 495                         'method' => 'post',
 496                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 497                         'id' => 'movepage',
 498                 ] );
 499                 $form->appendContent(
 500                         $fieldset,
 501                         new OOUI\HtmlSnippet(
 502                                 $hiddenFields .
 503                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 504                                 Html::hidden( 'wpEditToken', $user->getEditToken() )
 505                         )
 506                 );
 507
 508                 $out->addHTML(
 509                         new OOUI\PanelLayout( [
 510                                 'classes' => [ 'movepage-wrapper' ],
 511                                 'expanded' => false,
 512                                 'padded' => true,
 513                                 'framed' => true,
 514                                 'content' => $form,
 515                         ] )
 516                 );
 517
 518                 $this->showLogFragment( $this->oldTitle );
 519                 $this->showSubpages( $this->oldTitle );
 520         }
 521
 522         function doSubmit() {
 523                 $user = $this->getUser();
 524
 525                 if ( $user->pingLimiter( 'move' ) ) {
 526                         throw new ThrottledError;
 527                 }
 528
 529                 $ot = $this->oldTitle;
 530                 $nt = $this->newTitle;
 531
 532                 # don't allow moving to pages with # in
 533                 if ( !$nt || $nt->hasFragment() ) {
 534                         $this->showForm( [ [ 'badtitletext' ] ] );
 535
 536                         return;
 537                 }
 538
 539                 # Show a warning if the target file exists on a shared repo
 540                 if ( $nt->getNamespace() == NS_FILE
 541                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 542                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 543                         && MediaWikiServices::getInstance()->getRepoGroup()->findFile( $nt )
 544                 ) {
 545                         $this->showForm( [ [ 'file-exists-sharedrepo' ] ] );
 546
 547                         return;
 548                 }
 549
 550                 # Delete to make way if requested
 551                 if ( $this->deleteAndMove ) {
 552                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 553                         if ( count( $permErrors ) ) {
 554                                 # Only show the first error
 555                                 $this->showForm( $permErrors, true );
 556
 557                                 return;
 558                         }
 559
 560                         $page = WikiPage::factory( $nt );
 561
 562                         // Small safety margin to guard against concurrent edits
 563                         if ( $page->isBatchedDelete( 5 ) ) {
 564                                 $this->showForm( [ [ 'movepage-delete-first' ] ] );
 565
 566                                 return;
 567                         }
 568
 569                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 570
 571                         // Delete an associated image if there is
 572                         if ( $nt->getNamespace() == NS_FILE ) {
 573                                 $file = MediaWikiServices::getInstance()->getRepoGroup()->getLocalRepo()
 574                                         ->newFile( $nt );
 575                                 $file->load( File::READ_LATEST );
 576                                 if ( $file->exists() ) {
 577                                         $file->delete( $reason, false, $user );
 578                                 }
 579                         }
 580
 581                         $error = ''; // passed by ref
 582                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 583                         if ( !$deleteStatus->isGood() ) {
 584                                 $this->showForm( $deleteStatus->getErrorsArray() );
 585
 586                                 return;
 587                         }
 588                 }
 589
 590                 $handler = ContentHandler::getForTitle( $ot );
 591
 592                 if ( !$handler->supportsRedirects() ) {
 593                         $createRedirect = false;
 594                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 595                         $createRedirect = $this->leaveRedirect;
 596                 } else {
 597                         $createRedirect = true;
 598                 }
 599
 600                 # Do the actual move.
 601                 $mp = new MovePage( $ot, $nt );
 602
 603                 # check whether the requested actions are permitted / possible
 604                 $userPermitted = $mp->checkPermissions( $user, $this->reason )->isOK();
 605                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 606                         $this->moveTalk = false;
 607                 }
 608                 if ( $this->moveSubpages ) {
 609                         $permissionManager = MediaWikiServices::getInstance()->getPermissionManager();
 610                         $this->moveSubpages = $permissionManager->userCan( 'move-subpages', $user, $ot );
 611                 }
 612
 613                 $status = $mp->moveIfAllowed( $user, $this->reason, $createRedirect );
 614                 if ( !$status->isOK() ) {
 615                         $this->showForm( $status->getErrorsArray(), !$userPermitted );
 616                         return;
 617                 }
 618
 619                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 620                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 621                 }
 622
 623                 $out = $this->getOutput();
 624                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 625
 626                 $linkRenderer = $this->getLinkRenderer();
 627                 $oldLink = $linkRenderer->makeLink(
 628                         $ot,
 629                         null,
 630                         [ 'id' => 'movepage-oldlink' ],
 631                         [ 'redirect' => 'no' ]
 632                 );
 633                 $newLink = $linkRenderer->makeKnownLink(
 634                         $nt,
 635                         null,
 636                         [ 'id' => 'movepage-newlink' ]
 637                 );
 638                 $oldText = $ot->getPrefixedText();
 639                 $newText = $nt->getPrefixedText();
 640
 641                 if ( $ot->exists() ) {
 642                         // NOTE: we assume that if the old title exists, it's because it was re-created as
 643                         // a redirect to the new title. This is not safe, but what we did before was
 644                         // even worse: we just determined whether a redirect should have been created,
 645                         // and reported that it was created if it should have, without any checks.
 646                         // Also note that isRedirect() is unreliable because of T39209.
 647                         $msgName = 'movepage-moved-redirect';
 648                 } else {
 649                         $msgName = 'movepage-moved-noredirect';
 650                 }
 651
 652                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 653                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 654                 $out->addWikiMsg( $msgName );
 655
 656                 // Avoid PHP 7.1 warning from passing $this by reference
 657                 $movePage = $this;
 658                 Hooks::run( 'SpecialMovepageAfterMove', [ &$movePage, &$ot, &$nt ] );
 659
 660                 /*
 661                  * Now we move extra pages we've been asked to move: subpages and talk
 662                  * pages.
 663                  *
 664                  * First, make a list of id's.  This might be marginally less efficient
 665                  * than a more direct method, but this is not a highly performance-cri-
 666                  * tical code path and readable code is more important here.
 667                  *
 668                  * If the target namespace doesn't allow subpages, moving with subpages
 669                  * would mean that you couldn't move them back in one operation, which
 670                  * is bad.
 671                  * @todo FIXME: A specific error message should be given in this case.
 672                  */
 673
 674                 // @todo FIXME: Use Title::moveSubpages() here
 675                 $nsInfo = MediaWikiServices::getInstance()->getNamespaceInfo();
 676                 $dbr = wfGetDB( DB_MASTER );
 677                 if ( $this->moveSubpages && (
 678                         $nsInfo->hasSubpages( $nt->getNamespace() ) || (
 679                                 $this->moveTalk
 680                                         && $nsInfo->hasSubpages( $nt->getTalkPage()->getNamespace() )
 681                         )
 682                 ) ) {
 683                         $conds = [
 684                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 685                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 686                         ];
 687                         $conds['page_namespace'] = [];
 688                         if ( $nsInfo->hasSubpages( $nt->getNamespace() ) ) {
 689                                 $conds['page_namespace'][] = $ot->getNamespace();
 690                         }
 691                         if ( $this->moveTalk &&
 692                                 $nsInfo->hasSubpages( $nt->getTalkPage()->getNamespace() )
 693                         ) {
 694                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 695                         }
 696                 } elseif ( $this->moveTalk ) {
 697                         $conds = [
 698                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 699                                 'page_title' => $ot->getDBkey()
 700                         ];
 701                 } else {
 702                         # Skip the query
 703                         $conds = null;
 704                 }
 705
 706                 $extraPages = [];
 707                 if ( !is_null( $conds ) ) {
 708                         $extraPages = TitleArray::newFromResult(
 709                                 $dbr->select( 'page',
 710                                         [ 'page_id', 'page_namespace', 'page_title' ],
 711                                         $conds,
 712                                         __METHOD__
 713                                 )
 714                         );
 715                 }
 716
 717                 $extraOutput = [];
 718                 $count = 1;
 719                 foreach ( $extraPages as $oldSubpage ) {
 720                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 721                                 # Already did this one.
 722                                 continue;
 723                         }
 724
 725                         $newPageName = preg_replace(
 726                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 727                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # T23234
 728                                 $oldSubpage->getDBkey()
 729                         );
 730
 731                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 732                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 733                                 $newNs = $nt->getNamespace();
 734                         } elseif ( $oldSubpage->isTalkPage() ) {
 735                                 $newNs = $nt->getTalkPage()->getNamespace();
 736                         } else {
 737                                 $newNs = $nt->getSubjectPage()->getNamespace();
 738                         }
 739
 740                         # T16385: we need makeTitleSafe because the new page names may
 741                         # be longer than 255 characters.
 742                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 743                         if ( !$newSubpage ) {
 744                                 $oldLink = $linkRenderer->makeKnownLink( $oldSubpage );
 745                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 746                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 747                                 continue;
 748                         }
 749
 750                         $mp = new MovePage( $oldSubpage, $newSubpage );
 751                         # This was copy-pasted from Renameuser, bleh.
 752                         if ( $newSubpage->exists() && !$mp->isValidMove()->isOK() ) {
 753                                 $link = $linkRenderer->makeKnownLink( $newSubpage );
 754                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 755                         } else {
 756                                 $status = $mp->moveIfAllowed( $user, $this->reason, $createRedirect );
 757
 758                                 if ( $status->isOK() ) {
 759                                         if ( $this->fixRedirects ) {
 760                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 761                                         }
 762                                         $oldLink = $linkRenderer->makeLink(
 763                                                 $oldSubpage,
 764                                                 null,
 765                                                 [],
 766                                                 [ 'redirect' => 'no' ]
 767                                         );
 768
 769                                         $newLink = $linkRenderer->makeKnownLink( $newSubpage );
 770                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 771                                                 ->rawParams( $oldLink, $newLink )->escaped();
 772                                         ++$count;
 773
 774                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 775                                         if ( $count >= $maximumMovedPages ) {
 776                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 777                                                         ->numParams( $maximumMovedPages )->escaped();
 778                                                 break;
 779                                         }
 780                                 } else {
 781                                         $oldLink = $linkRenderer->makeKnownLink( $oldSubpage );
 782                                         $newLink = $linkRenderer->makeLink( $newSubpage );
 783                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 784                                                 ->rawParams( $oldLink, $newLink )->escaped();
 785                                 }
 786                         }
 787                 }
 788
 789                 if ( $extraOutput !== [] ) {
 790                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 791                 }
 792
 793                 # Deal with watches (we don't watch subpages)
 794                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 795                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 796         }
 797
 798         function showLogFragment( $title ) {
 799                 $moveLogPage = new LogPage( 'move' );
 800                 $out = $this->getOutput();
 801                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 802                 LogEventsList::showLogExtract( $out, 'move', $title );
 803         }
 804
 805         /**
 806          * Show subpages of the page being moved. Section is not shown if both current
 807          * namespace does not support subpages and no talk subpages were found.
 808          *
 809          * @param Title $title Page being moved.
 810          */
 811         function showSubpages( $title ) {
 812                 $nsHasSubpages = MediaWikiServices::getInstance()->getNamespaceInfo()->
 813                         hasSubpages( $title->getNamespace() );
 814                 $subpages = $title->getSubpages();
 815                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 816
 817                 $titleIsTalk = $title->isTalkPage();
 818                 $subpagesTalk = $title->getTalkPage()->getSubpages();
 819                 $countTalk = $subpagesTalk instanceof TitleArray ? $subpagesTalk->count() : 0;
 820                 $totalCount = $count + $countTalk;
 821
 822                 if ( !$nsHasSubpages && $countTalk == 0 ) {
 823                         return;
 824                 }
 825
 826                 $this->getOutput()->wrapWikiMsg(
 827                         '== $1 ==',
 828                         [ 'movesubpage', ( $titleIsTalk ? $count : $totalCount ) ]
 829                 );
 830
 831                 if ( $nsHasSubpages ) {
 832                         $this->showSubpagesList( $subpages, $count, 'movesubpagetext', true );
 833                 }
 834
 835                 if ( !$titleIsTalk && $countTalk > 0 ) {
 836                         $this->showSubpagesList( $subpagesTalk, $countTalk, 'movesubpagetalktext' );
 837                 }
 838         }
 839
 840         function showSubpagesList( $subpages, $pagecount, $wikiMsg, $noSubpageMsg = false ) {
 841                 $out = $this->getOutput();
 842
 843                 # No subpages.
 844                 if ( $pagecount == 0 && $noSubpageMsg ) {
 845                         $out->addWikiMsg( 'movenosubpage' );
 846                         return;
 847                 }
 848
 849                 $out->addWikiMsg( $wikiMsg, $this->getLanguage()->formatNum( $pagecount ) );
 850                 $out->addHTML( "<ul>\n" );
 851
 852                 $linkBatch = new LinkBatch( $subpages );
 853                 $linkBatch->setCaller( __METHOD__ );
 854                 $linkBatch->execute();
 855                 $linkRenderer = $this->getLinkRenderer();
 856
 857                 foreach ( $subpages as $subpage ) {
 858                         $link = $linkRenderer->makeLink( $subpage );
 859                         $out->addHTML( "<li>$link</li>\n" );
 860                 }
 861                 $out->addHTML( "</ul>\n" );
 862         }
 863
 864         /**
 865          * Return an array of subpages beginning with $search that this special page will accept.
 866          *
 867          * @param string $search Prefix to search for
 868          * @param int $limit Maximum number of results to return (usually 10)
 869          * @param int $offset Number of results to skip (usually 0)
 870          * @return string[] Matching subpages
 871          */
 872         public function prefixSearchSubpages( $search, $limit, $offset ) {
 873                 return $this->prefixSearchString( $search, $limit, $offset );
 874         }
 875
 876         protected function getGroupName() {
 877                 return 'pagetools';
 878         }
 879 }