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                 $oldTitleLink = Linker::link( $this->oldTitle );
 146
 147                 $out = $this->getOutput();
 148                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 149                 $out->addModules( 'mediawiki.special.movePage' );
 150                 $this->addHelpLink( 'Help:Moving a page' );
 151
 152                 $newTitle = $this->newTitle;
 153
 154                 if ( !$newTitle ) {
 155                         # Show the current title as a default
 156                         # when the form is first opened.
 157                         $newTitle = $this->oldTitle;
 158                 } elseif ( !count( $err ) ) {
 159                         # If a title was supplied, probably from the move log revert
 160                         # link, check for validity. We can then show some diagnostic
 161                         # information and save a click.
 162                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 163                         if ( is_array( $newerr ) ) {
 164                                 $err = $newerr;
 165                         }
 166                 }
 167
 168                 $user = $this->getUser();
 169
 170                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 171                         && $newTitle->quickUserCan( 'delete', $user )
 172                 ) {
 173                         $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
 174                         $movepagebtn = $this->msg( 'delete_and_move' )->text();
 175                         $submitVar = 'wpDeleteAndMove';
 176                         $confirm = true;
 177                         $err = array();
 178                 } else {
 179                         if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 180                                 $out->wrapWikiMsg(
 181                                         "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>",
 182                                         'moveuserpage-warning'
 183                                 );
 184                         } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 185                                 $out->wrapWikiMsg(
 186                                         "<div class=\"error mw-movecategorypage-warning\">\n$1\n</div>",
 187                                         'movecategorypage-warning'
 188                                 );
 189                         }
 190
 191                         $out->addWikiMsg( $this->getConfig()->get( 'FixDoubleRedirects' ) ?
 192                                 'movepagetext' :
 193                                 'movepagetext-noredirectfixer'
 194                         );
 195                         $movepagebtn = $this->msg( 'movepagebtn' )->text();
 196                         $submitVar = 'wpMove';
 197                         $confirm = false;
 198                 }
 199
 200                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 201                         && $user->isAllowed( 'reupload-shared' )
 202                 ) {
 203                         $out->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
 204                         $submitVar = 'wpMoveOverSharedFile';
 205                         $err = array();
 206                 }
 207
 208                 $oldTalk = $this->oldTitle->getTalkPage();
 209                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 210                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 211
 212                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 213                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 214
 215                 # We also want to be able to move assoc. subpage talk-pages even if base page
 216                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 217                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 218                         ( $oldTalk->exists()
 219                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 220
 221                 $dbr = wfGetDB( DB_SLAVE );
 222                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 223                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 224                                 array(
 225                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 226                                         'rd_title' => $this->oldTitle->getDBkey(),
 227                                 ), __METHOD__ );
 228                 } else {
 229                         $hasRedirects = false;
 230                 }
 231
 232                 if ( $considerTalk ) {
 233                         $out->addWikiMsg( 'movepagetalktext' );
 234                 }
 235
 236                 if ( count( $err ) ) {
 237                         $out->addHTML( "<div class='error'>\n" );
 238                         $action_desc = $this->msg( 'action-move' )->plain();
 239                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 240
 241                         if ( count( $err ) == 1 ) {
 242                                 $errMsg = $err[0];
 243                                 $errMsgName = array_shift( $errMsg );
 244
 245                                 if ( $errMsgName == 'hookaborted' ) {
 246                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 247                                 } else {
 248                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 249                                 }
 250                         } else {
 251                                 $errStr = array();
 252
 253                                 foreach ( $err as $errMsg ) {
 254                                         if ( $errMsg[0] == 'hookaborted' ) {
 255                                                 $errStr[] = $errMsg[1];
 256                                         } else {
 257                                                 $errMsgName = array_shift( $errMsg );
 258                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 259                                         }
 260                                 }
 261
 262                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 263                         }
 264                         $out->addHTML( "</div>\n" );
 265                 }
 266
 267                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 268                         # Is the title semi-protected?
 269                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 270                                 $noticeMsg = 'semiprotectedpagemovewarning';
 271                                 $classes[] = 'mw-textarea-sprotected';
 272                         } else {
 273                                 # Then it must be protected based on static groups (regular)
 274                                 $noticeMsg = 'protectedpagemovewarning';
 275                                 $classes[] = 'mw-textarea-protected';
 276                         }
 277                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 278                         $out->addWikiMsg( $noticeMsg );
 279                         LogEventsList::showLogExtract(
 280                                 $out,
 281                                 'protect',
 282                                 $this->oldTitle,
 283                                 '',
 284                                 array( 'lim' => 1 )
 285                         );
 286                         $out->addHTML( "</div>\n" );
 287                 }
 288
 289                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 290                 // is enforced in the mediawiki.special.movePage module
 291
 292                 $immovableNamespaces = array();
 293
 294                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 295                         if ( !MWNamespace::isMovable( $nsId ) ) {
 296                                 $immovableNamespaces[] = $nsId;
 297                         }
 298                 }
 299
 300                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 301
 302                 $out->addHTML(
 303                         Xml::openElement(
 304                                 'form',
 305                                 array(
 306                                         'method' => 'post',
 307                                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 308                                         'id' => 'movepage'
 309                                 )
 310                         ) .
 311                         Xml::openElement( 'fieldset' ) .
 312                         Xml::element( 'legend', null, $this->msg( 'move-page-legend' )->text() ) .
 313                         Xml::openElement( 'table', array( 'id' => 'mw-movepage-table' ) )
 314                 );
 315
 316                 $out->addHTML(
 317                         "<tr>
 318                                 <td class='mw-label'>" .
 319                                         $this->msg( 'movearticle' )->escaped() .
 320                                 "</td>
 321                                 <td class='mw-input'>
 322                                         <strong>{$oldTitleLink}</strong>
 323                                 </td>
 324                         </tr>
 325                         <tr>
 326                                 <td class='mw-label'>" .
 327                                         Xml::label( $this->msg( 'newtitle' )->text(), 'wpNewTitleMain' ) .
 328                                 "</td>
 329                                 <td class='mw-input'>" .
 330                                         Html::namespaceSelector(
 331                                                 array(
 332                                                         'selected' => $newTitle->getNamespace(),
 333                                                         'exclude' => $immovableNamespaces
 334                                                 ),
 335                                                 array( 'name' => 'wpNewTitleNs', 'id' => 'wpNewTitleNs' )
 336                                         ) .
 337                                         Xml::input(
 338                                                 'wpNewTitleMain',
 339                                                 60,
 340                                                 $wgContLang->recodeForEdit( $newTitle->getText() ),
 341                                                 array(
 342                                                         'type' => 'text',
 343                                                         'id' => 'wpNewTitleMain',
 344                                                         'maxlength' => 255
 345                                                 )
 346                                         ) .
 347                                         Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 348                                 "</td>
 349                         </tr>
 350                         <tr>
 351                                 <td class='mw-label'>" .
 352                                         Xml::label( $this->msg( 'movereason' )->text(), 'wpReason' ) .
 353                                 "</td>
 354                                 <td class='mw-input'>" .
 355                                         Xml::input( 'wpReason', 60, $this->reason, array(
 356                                                 'type' => 'text',
 357                                                 'id' => 'wpReason',
 358                                                 'maxlength' => 200,
 359                                         ) ) .
 360                                 "</td>
 361                         </tr>"
 362                 );
 363
 364                 if ( $considerTalk ) {
 365                         $out->addHTML( "
 366                                 <tr>
 367                                         <td></td>
 368                                         <td class='mw-input'>" .
 369                                                 Xml::checkLabel(
 370                                                         $this->msg( 'movetalk' )->text(),
 371                                                         'wpMovetalk',
 372                                                         'wpMovetalk',
 373                                                         $this->moveTalk
 374                                                 ) .
 375                                         "</td>
 376                                 </tr>"
 377                         );
 378                 }
 379
 380                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 381                         if ( $handler->supportsRedirects() ) {
 382                                 $isChecked = $this->leaveRedirect;
 383                                 $options = array();
 384                         } else {
 385                                 $isChecked = false;
 386                                 $options = array(
 387                                         'disabled' => 'disabled'
 388                                 );
 389                         }
 390                         $out->addHTML( "
 391                                 <tr>
 392                                         <td></td>
 393                                         <td class='mw-input'>" .
 394                                                 Xml::checkLabel(
 395                                                         $this->msg( 'move-leave-redirect' )->text(),
 396                                                         'wpLeaveRedirect',
 397                                                         'wpLeaveRedirect',
 398                                                         $isChecked,
 399                                                         $options
 400                                                 ) .
 401                                         "</td>
 402                                 </tr>"
 403                         );
 404                 }
 405
 406                 if ( $hasRedirects ) {
 407                         $out->addHTML( "
 408                                 <tr>
 409                                         <td></td>
 410                                         <td class='mw-input'>" .
 411                                                 Xml::checkLabel(
 412                                                         $this->msg( 'fix-double-redirects' )->text(),
 413                                                         'wpFixRedirects',
 414                                                         'wpFixRedirects',
 415                                                         $this->fixRedirects
 416                                                 ) .
 417                                         "</td>
 418                                 </tr>"
 419                         );
 420                 }
 421
 422                 if ( $canMoveSubpage ) {
 423                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 424                         $out->addHTML( "
 425                                 <tr>
 426                                         <td></td>
 427                                         <td class='mw-input'>" .
 428                                                 Xml::check(
 429                                                         'wpMovesubpages',
 430                                                         # Don't check the box if we only have talk subpages to
 431                                                         # move and we aren't moving the talk page.
 432                                                         $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 433                                                         array( 'id' => 'wpMovesubpages' )
 434                                                 ) . '&#160;' .
 435                                                 Xml::tags(
 436                                                         'label',
 437                                                         array( 'for' => 'wpMovesubpages' ),
 438                                                         $this->msg(
 439                                                                 ( $this->oldTitle->hasSubpages()
 440                                                                         ? 'move-subpages'
 441                                                                         : 'move-talk-subpages' )
 442                                                         )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 443                                                 ) .
 444                                         "</td>
 445                                 </tr>"
 446                         );
 447                 }
 448
 449                 $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 450                         || $user->isWatched( $this->oldTitle ) );
 451                 # Don't allow watching if user is not logged in
 452                 if ( $user->isLoggedIn() ) {
 453                         $out->addHTML( "
 454                                 <tr>
 455                                         <td></td>
 456                                         <td class='mw-input'>" .
 457                                                 Xml::checkLabel(
 458                                                         $this->msg( 'move-watch' )->text(),
 459                                                         'wpWatch',
 460                                                         'watch',
 461                                                         $watchChecked
 462                                                 ) .
 463                                         "</td>
 464                                 </tr>"
 465                         );
 466                 }
 467
 468                 if ( $confirm ) {
 469                         $out->addHTML( "
 470                                 <tr>
 471                                         <td></td>
 472                                         <td class='mw-input'>" .
 473                                                 Xml::checkLabel(
 474                                                         $this->msg( 'delete_and_move_confirm' )->text(),
 475                                                         'wpConfirm',
 476                                                         'wpConfirm'
 477                                                 ) .
 478                                         "</td>
 479                                 </tr>"
 480                         );
 481                 }
 482
 483                 $out->addHTML( "
 484                         <tr>
 485                                 <td></td>
 486                                 <td class='mw-submit'>" .
 487                                         Xml::submitButton( $movepagebtn, array( 'name' => $submitVar ) ) .
 488                                 "</td>
 489                         </tr>"
 490                 );
 491
 492                 $out->addHTML(
 493                         Xml::closeElement( 'table' ) .
 494                         Html::hidden( 'wpEditToken', $user->getEditToken() ) .
 495                         Xml::closeElement( 'fieldset' ) .
 496                         Xml::closeElement( 'form' ) .
 497                         "\n"
 498                 );
 499
 500                 $this->showLogFragment( $this->oldTitle );
 501                 $this->showSubpages( $this->oldTitle );
 502         }
 503
 504         function doSubmit() {
 505                 $user = $this->getUser();
 506
 507                 if ( $user->pingLimiter( 'move' ) ) {
 508                         throw new ThrottledError;
 509                 }
 510
 511                 $ot = $this->oldTitle;
 512                 $nt = $this->newTitle;
 513
 514                 # don't allow moving to pages with # in
 515                 if ( !$nt || $nt->hasFragment() ) {
 516                         $this->showForm( array( array( 'badtitletext' ) ) );
 517
 518                         return;
 519                 }
 520
 521                 # Show a warning if the target file exists on a shared repo
 522                 if ( $nt->getNamespace() == NS_FILE
 523                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 524                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 525                         && wfFindFile( $nt )
 526                 ) {
 527                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 528
 529                         return;
 530                 }
 531
 532                 # Delete to make way if requested
 533                 if ( $this->deleteAndMove ) {
 534                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 535                         if ( count( $permErrors ) ) {
 536                                 # Only show the first error
 537                                 $this->showForm( $permErrors );
 538
 539                                 return;
 540                         }
 541
 542                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 543
 544                         // Delete an associated image if there is
 545                         if ( $nt->getNamespace() == NS_FILE ) {
 546                                 $file = wfLocalFile( $nt );
 547                                 $file->load( File::READ_LATEST );
 548                                 if ( $file->exists() ) {
 549                                         $file->delete( $reason, false, $user );
 550                                 }
 551                         }
 552
 553                         $error = ''; // passed by ref
 554                         $page = WikiPage::factory( $nt );
 555                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 556                         if ( !$deleteStatus->isGood() ) {
 557                                 $this->showForm( $deleteStatus->getErrorsArray() );
 558
 559                                 return;
 560                         }
 561                 }
 562
 563                 $handler = ContentHandler::getForTitle( $ot );
 564
 565                 if ( !$handler->supportsRedirects() ) {
 566                         $createRedirect = false;
 567                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 568                         $createRedirect = $this->leaveRedirect;
 569                 } else {
 570                         $createRedirect = true;
 571                 }
 572
 573                 # Do the actual move.
 574                 $mp = new MovePage( $ot, $nt );
 575                 $valid = $mp->isValidMove();
 576                 if ( !$valid->isOK() ) {
 577                         $this->showForm( $valid->getErrorsArray() );
 578                         return;
 579                 }
 580
 581                 $permStatus = $mp->checkPermissions( $user, $this->reason );
 582                 if ( !$permStatus->isOK() ) {
 583                         $this->showForm( $permStatus->getErrorsArray() );
 584                         return;
 585                 }
 586
 587                 $status = $mp->move( $user, $this->reason, $createRedirect );
 588                 if ( !$status->isOK() ) {
 589                         $this->showForm( $status->getErrorsArray() );
 590                         return;
 591                 }
 592
 593                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 594                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 595                 }
 596
 597                 $out = $this->getOutput();
 598                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 599
 600                 $oldLink = Linker::link(
 601                         $ot,
 602                         null,
 603                         array( 'id' => 'movepage-oldlink' ),
 604                         array( 'redirect' => 'no' )
 605                 );
 606                 $newLink = Linker::linkKnown(
 607                         $nt,
 608                         null,
 609                         array( 'id' => 'movepage-newlink' )
 610                 );
 611                 $oldText = $ot->getPrefixedText();
 612                 $newText = $nt->getPrefixedText();
 613
 614                 if ( $ot->exists() ) {
 615                         //NOTE: we assume that if the old title exists, it's because it was re-created as
 616                         // a redirect to the new title. This is not safe, but what we did before was
 617                         // even worse: we just determined whether a redirect should have been created,
 618                         // and reported that it was created if it should have, without any checks.
 619                         // Also note that isRedirect() is unreliable because of bug 37209.
 620                         $msgName = 'movepage-moved-redirect';
 621                 } else {
 622                         $msgName = 'movepage-moved-noredirect';
 623                 }
 624
 625                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 626                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 627                 $out->addWikiMsg( $msgName );
 628
 629                 Hooks::run( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 630
 631                 # Now we move extra pages we've been asked to move: subpages and talk
 632                 # pages.  First, if the old page or the new page is a talk page, we
 633                 # can't move any talk pages: cancel that.
 634                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 635                         $this->moveTalk = false;
 636                 }
 637
 638                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 639                         $this->moveSubpages = false;
 640                 }
 641
 642                 # Next make a list of id's.  This might be marginally less efficient
 643                 # than a more direct method, but this is not a highly performance-cri-
 644                 # tical code path and readable code is more important here.
 645                 #
 646                 # Note: this query works nicely on MySQL 5, but the optimizer in MySQL
 647                 # 4 might get confused.  If so, consider rewriting as a UNION.
 648                 #
 649                 # If the target namespace doesn't allow subpages, moving with subpages
 650                 # would mean that you couldn't move them back in one operation, which
 651                 # is bad.
 652                 # @todo FIXME: A specific error message should be given in this case.
 653
 654                 // @todo FIXME: Use Title::moveSubpages() here
 655                 $dbr = wfGetDB( DB_MASTER );
 656                 if ( $this->moveSubpages && (
 657                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 658                                 $this->moveTalk
 659                                         && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 660                         )
 661                 ) ) {
 662                         $conds = array(
 663                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 664                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 665                         );
 666                         $conds['page_namespace'] = array();
 667                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 668                                 $conds['page_namespace'][] = $ot->getNamespace();
 669                         }
 670                         if ( $this->moveTalk &&
 671                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 672                         ) {
 673                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 674                         }
 675                 } elseif ( $this->moveTalk ) {
 676                         $conds = array(
 677                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 678                                 'page_title' => $ot->getDBkey()
 679                         );
 680                 } else {
 681                         # Skip the query
 682                         $conds = null;
 683                 }
 684
 685                 $extraPages = array();
 686                 if ( !is_null( $conds ) ) {
 687                         $extraPages = TitleArray::newFromResult(
 688                                 $dbr->select( 'page',
 689                                         array( 'page_id', 'page_namespace', 'page_title' ),
 690                                         $conds,
 691                                         __METHOD__
 692                                 )
 693                         );
 694                 }
 695
 696                 $extraOutput = array();
 697                 $count = 1;
 698                 foreach ( $extraPages as $oldSubpage ) {
 699                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 700                                 # Already did this one.
 701                                 continue;
 702                         }
 703
 704                         $newPageName = preg_replace(
 705                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 706                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 707                                 $oldSubpage->getDBkey()
 708                         );
 709
 710                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 711                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 712                                 $newNs = $nt->getNamespace();
 713                         } elseif ( $oldSubpage->isTalkPage() ) {
 714                                 $newNs = $nt->getTalkPage()->getNamespace();
 715                         } else {
 716                                 $newNs = $nt->getSubjectPage()->getNamespace();
 717                         }
 718
 719                         # Bug 14385: we need makeTitleSafe because the new page names may
 720                         # be longer than 255 characters.
 721                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 722                         if ( !$newSubpage ) {
 723                                 $oldLink = Linker::linkKnown( $oldSubpage );
 724                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 725                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 726                                 continue;
 727                         }
 728
 729                         # This was copy-pasted from Renameuser, bleh.
 730                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 731                                 $link = Linker::linkKnown( $newSubpage );
 732                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 733                         } else {
 734                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 735
 736                                 if ( $success === true ) {
 737                                         if ( $this->fixRedirects ) {
 738                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 739                                         }
 740                                         $oldLink = Linker::link(
 741                                                 $oldSubpage,
 742                                                 null,
 743                                                 array(),
 744                                                 array( 'redirect' => 'no' )
 745                                         );
 746
 747                                         $newLink = Linker::linkKnown( $newSubpage );
 748                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 749                                                 ->rawParams( $oldLink, $newLink )->escaped();
 750                                         ++$count;
 751
 752                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 753                                         if ( $count >= $maximumMovedPages ) {
 754                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 755                                                         ->numParams( $maximumMovedPages )->escaped();
 756                                                 break;
 757                                         }
 758                                 } else {
 759                                         $oldLink = Linker::linkKnown( $oldSubpage );
 760                                         $newLink = Linker::link( $newSubpage );
 761                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 762                                                 ->rawParams( $oldLink, $newLink )->escaped();
 763                                 }
 764                         }
 765                 }
 766
 767                 if ( $extraOutput !== array() ) {
 768                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 769                 }
 770
 771                 # Deal with watches (we don't watch subpages)
 772                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 773                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 774         }
 775
 776         function showLogFragment( $title ) {
 777                 $moveLogPage = new LogPage( 'move' );
 778                 $out = $this->getOutput();
 779                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 780                 LogEventsList::showLogExtract( $out, 'move', $title );
 781         }
 782
 783         function showSubpages( $title ) {
 784                 if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 785                         return;
 786                 }
 787
 788                 $subpages = $title->getSubpages();
 789                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 790
 791                 $out = $this->getOutput();
 792                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 793
 794                 # No subpages.
 795                 if ( $count == 0 ) {
 796                         $out->addWikiMsg( 'movenosubpage' );
 797
 798                         return;
 799                 }
 800
 801                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 802                 $out->addHTML( "<ul>\n" );
 803
 804                 foreach ( $subpages as $subpage ) {
 805                         $link = Linker::link( $subpage );
 806                         $out->addHTML( "<li>$link</li>\n" );
 807                 }
 808                 $out->addHTML( "</ul>\n" );
 809         }
 810
 811         protected function getGroupName() {
 812                 return 'pagetools';
 813         }
 814 }