includes/SpecialUndelete.php

   1 <?php
   2
   3 /**
   4  * Special page allowing users with the appropriate permissions to view
   5  * and restore deleted content
   6  *
   7  * @package MediaWiki
   8  * @subpackage Special pages
   9  */
  10
  11 /**
  12  *
  13  */
  14 function wfSpecialUndelete( $par ) {
  15     global $wgRequest;
  16
  17         $form = new UndeleteForm( $wgRequest, $par );
  18         $form->execute();
  19 }
  20
  21 /**
  22  *
  23  * @package MediaWiki
  24  * @subpackage SpecialPage
  25  */
  26 class PageArchive {
  27         var $title;
  28
  29         function PageArchive( &$title ) {
  30                 if( is_null( $title ) ) {
  31                         throw new MWException( 'Archiver() given a null title.');
  32                 }
  33                 $this->title =& $title;
  34         }
  35
  36         /**
  37          * List all deleted pages recorded in the archive table. Returns result
  38          * wrapper with (ar_namespace, ar_title, count) fields, ordered by page
  39          * namespace/title. Can be called staticaly.
  40          *
  41          * @return ResultWrapper
  42          */
  43         /* static */ function listAllPages() {
  44                 $dbr =& wfGetDB( DB_SLAVE );
  45                 $archive = $dbr->tableName( 'archive' );
  46
  47                 $sql = "SELECT ar_namespace,ar_title, COUNT(*) AS count FROM $archive " .
  48                   "GROUP BY ar_namespace,ar_title ORDER BY ar_namespace,ar_title";
  49
  50                 return $dbr->resultObject( $dbr->query( $sql, 'PageArchive::listAllPages' ) );
  51         }
  52
  53         /**
  54          * List the revisions of the given page. Returns result wrapper with
  55          * (ar_minor_edit, ar_timestamp, ar_user, ar_user_text, ar_comment) fields.
  56          *
  57          * @return ResultWrapper
  58          */
  59         function listRevisions() {
  60                 $dbr =& wfGetDB( DB_SLAVE );
  61                 $res = $dbr->select( 'archive',
  62                         array( 'ar_minor_edit', 'ar_timestamp', 'ar_user', 'ar_user_text', 'ar_comment' ),
  63                         array( 'ar_namespace' => $this->title->getNamespace(),
  64                                'ar_title' => $this->title->getDBkey() ),
  65                         'PageArchive::listRevisions',
  66                         array( 'ORDER BY' => 'ar_timestamp DESC' ) );
  67                 $ret = $dbr->resultObject( $res );
  68                 return $ret;
  69         }
  70
  71         /**
  72          * List the deleted file revisions for this page, if it's a file page.
  73          * Returns a result wrapper with various filearchive fields, or null
  74          * if not a file page.
  75          *
  76          * @return ResultWrapper
  77          * @fixme Does this belong in Image for fuller encapsulation?
  78          */
  79         function listFiles() {
  80                 if( $this->title->getNamespace() == NS_IMAGE ) {
  81                         $dbr =& wfGetDB( DB_SLAVE );
  82                         $res = $dbr->select( 'filearchive',
  83                                 array(
  84                                         'fa_id',
  85                                         'fa_name',
  86                                         'fa_storage_key',
  87                                         'fa_size',
  88                                         'fa_width',
  89                                         'fa_height',
  90                                         'fa_description',
  91                                         'fa_user',
  92                                         'fa_user_text',
  93                                         'fa_timestamp' ),
  94                                 array( 'fa_name' => $this->title->getDbKey() ),
  95                                 __METHOD__,
  96                                 array( 'ORDER BY' => 'fa_timestamp DESC' ) );
  97                         $ret = $dbr->resultObject( $res );
  98                         return $ret;
  99                 }
 100                 return null;
 101         }
 102
 103         /**
 104          * Fetch (and decompress if necessary) the stored text for the deleted
 105          * revision of the page with the given timestamp.
 106          *
 107          * @return string
 108          * @deprecated Use getRevision() for more flexible information
 109          */
 110         function getRevisionText( $timestamp ) {
 111                 $rev = $this->getRevision( $timestamp );
 112                 return $rev ? $rev->getText() : null;
 113         }
 114
 115         /**
 116          * Return a Revision object containing data for the deleted revision.
 117          * Note that the result *may* or *may not* have a null page ID.
 118          * @param string $timestamp
 119          * @return Revision
 120          */
 121         function getRevision( $timestamp ) {
 122                 $dbr =& wfGetDB( DB_SLAVE );
 123                 $row = $dbr->selectRow( 'archive',
 124                         array(
 125                                 'ar_rev_id',
 126                                 'ar_text',
 127                                 'ar_comment',
 128                                 'ar_user',
 129                                 'ar_user_text',
 130                                 'ar_timestamp',
 131                                 'ar_minor_edit',
 132                                 'ar_flags',
 133                                 'ar_text_id' ),
 134                         array( 'ar_namespace' => $this->title->getNamespace(),
 135                                'ar_title' => $this->title->getDbkey(),
 136                                'ar_timestamp' => $dbr->timestamp( $timestamp ) ),
 137                         __METHOD__ );
 138                 if( $row ) {
 139                         return new Revision( array(
 140                                 'page'       => $this->title->getArticleId(),
 141                                 'id'         => $row->ar_rev_id,
 142                                 'text'       => ($row->ar_text_id ? null : $row->ar_text),
 143                                 'comment'    => $row->ar_comment,
 144                                 'user'       => $row->ar_user,
 145                                 'user_text'  => $row->ar_user_text,
 146                                 'timestamp'  => $row->ar_timestamp,
 147                                 'minor_edit' => $row->ar_minor_edit,
 148                                 'text_id'    => $row->ar_text_id ) );
 149                 } else {
 150                         return null;
 151                 }
 152         }
 153
 154         /**
 155          * Get the text from an archive row containing ar_text, ar_flags and ar_text_id
 156          */
 157         function getTextFromRow( $row ) {
 158                 if( is_null( $row->ar_text_id ) ) {
 159                         // An old row from MediaWiki 1.4 or previous.
 160                         // Text is embedded in this row in classic compression format.
 161                         return Revision::getRevisionText( $row, "ar_" );
 162                 } else {
 163                         // New-style: keyed to the text storage backend.
 164                         $dbr =& wfGetDB( DB_SLAVE );
 165                         $text = $dbr->selectRow( 'text',
 166                                 array( 'old_text', 'old_flags' ),
 167                                 array( 'old_id' => $row->ar_text_id ),
 168                                 __METHOD__ );
 169                         return Revision::getRevisionText( $text );
 170                 }
 171         }
 172
 173
 174         /**
 175          * Fetch (and decompress if necessary) the stored text of the most
 176          * recently edited deleted revision of the page.
 177          *
 178          * If there are no archived revisions for the page, returns NULL.
 179          *
 180          * @return string
 181          */
 182         function getLastRevisionText() {
 183                 $dbr =& wfGetDB( DB_SLAVE );
 184                 $row = $dbr->selectRow( 'archive',
 185                         array( 'ar_text', 'ar_flags', 'ar_text_id' ),
 186                         array( 'ar_namespace' => $this->title->getNamespace(),
 187                                'ar_title' => $this->title->getDBkey() ),
 188                         'PageArchive::getLastRevisionText',
 189                         array( 'ORDER BY' => 'ar_timestamp DESC' ) );
 190                 if( $row ) {
 191                         return $this->getTextFromRow( $row );
 192                 } else {
 193                         return NULL;
 194                 }
 195         }
 196
 197         /**
 198          * Quick check if any archived revisions are present for the page.
 199          * @return bool
 200          */
 201         function isDeleted() {
 202                 $dbr =& wfGetDB( DB_SLAVE );
 203                 $n = $dbr->selectField( 'archive', 'COUNT(ar_title)',
 204                         array( 'ar_namespace' => $this->title->getNamespace(),
 205                                'ar_title' => $this->title->getDBkey() ) );
 206                 return ($n > 0);
 207         }
 208
 209         /**
 210          * Restore the given (or all) text and file revisions for the page.
 211          * Once restored, the items will be removed from the archive tables.
 212          * The deletion log will be updated with an undeletion notice.
 213          *
 214          * @param array $timestamps Pass an empty array to restore all revisions, otherwise list the ones to undelete.
 215          * @param string $comment
 216          * @param array $fileVersions
 217          *
 218          * @return true on success.
 219          */
 220         function undelete( $timestamps, $comment = '', $fileVersions = array() ) {
 221                 // If both the set of text revisions and file revisions are empty,
 222                 // restore everything. Otherwise, just restore the requested items.
 223                 $restoreAll = empty( $timestamps ) && empty( $fileVersions );
 224
 225                 $restoreText = $restoreAll || !empty( $timestamps );
 226                 $restoreFiles = $restoreAll || !empty( $fileVersions );
 227
 228                 if( $restoreFiles && $this->title->getNamespace() == NS_IMAGE ) {
 229                         $img = new Image( $this->title );
 230                         $filesRestored = $img->restore( $fileVersions );
 231                 } else {
 232                         $filesRestored = 0;
 233                 }
 234
 235                 if( $restoreText ) {
 236                         $textRestored = $this->undeleteRevisions( $timestamps );
 237                 } else {
 238                         $textRestored = 0;
 239                 }
 240
 241                 // Touch the log!
 242                 global $wgContLang;
 243                 $log = new LogPage( 'delete' );
 244
 245                 if( $textRestored && $filesRestored ) {
 246                         $reason = wfMsgForContent( 'undeletedrevisions-files',
 247                                 $wgContLang->formatNum( $textRestored ),
 248                                 $wgContLang->formatNum( $filesRestored ) );
 249                 } elseif( $textRestored ) {
 250                         $reason = wfMsgForContent( 'undeletedrevisions',
 251                                 $wgContLang->formatNum( $textRestored ) );
 252                 } elseif( $filesRestored ) {
 253                         $reason = wfMsgForContent( 'undeletedfiles',
 254                                 $wgContLang->formatNum( $filesRestored ) );
 255                 } else {
 256                         wfDebug( "Undelete: nothing undeleted...\n" );
 257                         return false;
 258                 }
 259
 260                 if( trim( $comment ) != '' )
 261                         $reason .= ": {$comment}";
 262                 $log->addEntry( 'restore', $this->title, $reason );
 263
 264                 return true;
 265         }
 266
 267         /**
 268          * This is the meaty bit -- restores archived revisions of the given page
 269          * to the cur/old tables. If the page currently exists, all revisions will
 270          * be stuffed into old, otherwise the most recent will go into cur.
 271          *
 272          * @param array $timestamps Pass an empty array to restore all revisions, otherwise list the ones to undelete.
 273          * @param string $comment
 274          * @param array $fileVersions
 275          *
 276          * @return int number of revisions restored
 277          */
 278         private function undeleteRevisions( $timestamps ) {
 279                 global $wgParser, $wgDBtype;
 280
 281                 $restoreAll = empty( $timestamps );
 282
 283                 $dbw =& wfGetDB( DB_MASTER );
 284                 extract( $dbw->tableNames( 'page', 'archive' ) );
 285
 286                 # Does this page already exist? We'll have to update it...
 287                 $article = new Article( $this->title );
 288                 $options = ( $wgDBtype == 'postgres' )
 289                         ? '' // pg doesn't support this?
 290                         : 'FOR UPDATE';
 291                 $page = $dbw->selectRow( 'page',
 292                         array( 'page_id', 'page_latest' ),
 293                         array( 'page_namespace' => $this->title->getNamespace(),
 294                                'page_title'     => $this->title->getDBkey() ),
 295                         __METHOD__,
 296                         $options );
 297                 if( $page ) {
 298                         # Page already exists. Import the history, and if necessary
 299                         # we'll update the latest revision field in the record.
 300                         $newid             = 0;
 301                         $pageId            = $page->page_id;
 302                         $previousRevId     = $page->page_latest;
 303                 } else {
 304                         # Have to create a new article...
 305                         $newid  = $article->insertOn( $dbw );
 306                         $pageId = $newid;
 307                         $previousRevId = 0;
 308                 }
 309
 310                 if( $restoreAll ) {
 311                         $oldones = '1 = 1'; # All revisions...
 312                 } else {
 313                         $oldts = implode( ',',
 314                                 array_map( array( &$dbw, 'addQuotes' ),
 315                                         array_map( array( &$dbw, 'timestamp' ),
 316                                                 $timestamps ) ) );
 317
 318                         $oldones = "ar_timestamp IN ( {$oldts} )";
 319                 }
 320
 321                 /**
 322                  * Restore each revision...
 323                  */
 324                 $result = $dbw->select( 'archive',
 325                         /* fields */ array(
 326                                 'ar_rev_id',
 327                                 'ar_text',
 328                                 'ar_comment',
 329                                 'ar_user',
 330                                 'ar_user_text',
 331                                 'ar_timestamp',
 332                                 'ar_minor_edit',
 333                                 'ar_flags',
 334                                 'ar_text_id' ),
 335                         /* WHERE */ array(
 336                                 'ar_namespace' => $this->title->getNamespace(),
 337                                 'ar_title'     => $this->title->getDBkey(),
 338                                 $oldones ),
 339                         __METHOD__,
 340                         /* options */ array(
 341                                 'ORDER BY' => 'ar_timestamp' )
 342                         );
 343                 if( $dbw->numRows( $result ) < count( $timestamps ) ) {
 344                         wfDebug( __METHOD__.": couldn't find all requested rows\n" );
 345                         return false;
 346                 }
 347
 348                 $revision = null;
 349                 $newRevId = $previousRevId;
 350                 $restored = 0;
 351
 352                 while( $row = $dbw->fetchObject( $result ) ) {
 353                         if( $row->ar_text_id ) {
 354                                 // Revision was deleted in 1.5+; text is in
 355                                 // the regular text table, use the reference.
 356                                 // Specify null here so the so the text is
 357                                 // dereferenced for page length info if needed.
 358                                 $revText = null;
 359                         } else {
 360                                 // Revision was deleted in 1.4 or earlier.
 361                                 // Text is squashed into the archive row, and
 362                                 // a new text table entry will be created for it.
 363                                 $revText = Revision::getRevisionText( $row, 'ar_' );
 364                         }
 365                         $revision = new Revision( array(
 366                                 'page'       => $pageId,
 367                                 'id'         => $row->ar_rev_id,
 368                                 'text'       => $revText,
 369                                 'comment'    => $row->ar_comment,
 370                                 'user'       => $row->ar_user,
 371                                 'user_text'  => $row->ar_user_text,
 372                                 'timestamp'  => $row->ar_timestamp,
 373                                 'minor_edit' => $row->ar_minor_edit,
 374                                 'text_id'    => $row->ar_text_id,
 375                                 ) );
 376                         $newRevId = $revision->insertOn( $dbw );
 377                         $restored++;
 378                 }
 379
 380                 if( $revision ) {
 381                         # FIXME: Update latest if newer as well...
 382                         if( $newid ) {
 383                                 // Attach the latest revision to the page...
 384                                 $article->updateRevisionOn( $dbw, $revision, $previousRevId );
 385
 386                                 // Update site stats, link tables, etc
 387                                 $article->createUpdates( $revision );
 388                         }
 389
 390                         if( $newid ) {
 391                                 Article::onArticleCreate( $this->title );
 392                         } else {
 393                                 Article::onArticleEdit( $this->title );
 394                         }
 395                 } else {
 396                         # Something went terribly wrong!
 397                 }
 398
 399                 # Now that it's safely stored, take it out of the archive
 400                 $dbw->delete( 'archive',
 401                         /* WHERE */ array(
 402                                 'ar_namespace' => $this->title->getNamespace(),
 403                                 'ar_title' => $this->title->getDBkey(),
 404                                 $oldones ),
 405                         __METHOD__ );
 406
 407                 return $restored;
 408         }
 409
 410 }
 411
 412 /**
 413  *
 414  * @package MediaWiki
 415  * @subpackage SpecialPage
 416  */
 417 class UndeleteForm {
 418         var $mAction, $mTarget, $mTimestamp, $mRestore, $mTargetObj;
 419         var $mTargetTimestamp, $mAllowed, $mComment;
 420
 421         function UndeleteForm( &$request, $par = "" ) {
 422                 global $wgUser;
 423                 $this->mAction = $request->getVal( 'action' );
 424                 $this->mTarget = $request->getVal( 'target' );
 425                 $time = $request->getVal( 'timestamp' );
 426                 $this->mTimestamp = $time ? wfTimestamp( TS_MW, $time ) : '';
 427                 $this->mFile = $request->getVal( 'file' );
 428
 429                 $posted = $request->wasPosted() &&
 430                         $wgUser->matchEditToken( $request->getVal( 'wpEditToken' ) );
 431                 $this->mRestore = $request->getCheck( 'restore' ) && $posted;
 432                 $this->mPreview = $request->getCheck( 'preview' ) && $posted;
 433                 $this->mComment = $request->getText( 'wpComment' );
 434
 435                 if( $par != "" ) {
 436                         $this->mTarget = $par;
 437                 }
 438                 if ( $wgUser->isAllowed( 'delete' ) && !$wgUser->isBlocked() ) {
 439                         $this->mAllowed = true;
 440                 } else {
 441                         $this->mAllowed = false;
 442                         $this->mTimestamp = '';
 443                         $this->mRestore = false;
 444                 }
 445                 if ( $this->mTarget !== "" ) {
 446                         $this->mTargetObj = Title::newFromURL( $this->mTarget );
 447                 } else {
 448                         $this->mTargetObj = NULL;
 449                 }
 450                 if( $this->mRestore ) {
 451                         $timestamps = array();
 452                         $this->mFileVersions = array();
 453                         foreach( $_REQUEST as $key => $val ) {
 454                                 if( preg_match( '/^ts(\d{14})$/', $key, $matches ) ) {
 455                                         array_push( $timestamps, $matches[1] );
 456                                 }
 457
 458                                 if( preg_match( '/^fileid(\d+)$/', $key, $matches ) ) {
 459                                         $this->mFileVersions[] = intval( $matches[1] );
 460                                 }
 461                         }
 462                         rsort( $timestamps );
 463                         $this->mTargetTimestamp = $timestamps;
 464                 }
 465         }
 466
 467         function execute() {
 468
 469                 if( is_null( $this->mTargetObj ) ) {
 470                         return $this->showList();
 471                 }
 472                 if( $this->mTimestamp !== '' ) {
 473                         return $this->showRevision( $this->mTimestamp );
 474                 }
 475                 if( $this->mFile !== null ) {
 476                         return $this->showFile( $this->mFile );
 477                 }
 478                 if( $this->mRestore && $this->mAction == "submit" ) {
 479                         return $this->undelete();
 480                 }
 481                 return $this->showHistory();
 482         }
 483
 484         /* private */ function showList() {
 485                 global $wgLang, $wgContLang, $wgUser, $wgOut;
 486
 487                 # List undeletable articles
 488                 $result = PageArchive::listAllPages();
 489
 490                 if ( $this->mAllowed ) {
 491                         $wgOut->setPagetitle( wfMsg( "undeletepage" ) );
 492                 } else {
 493                         $wgOut->setPagetitle( wfMsg( "viewdeletedpage" ) );
 494                 }
 495                 $wgOut->addWikiText( wfMsg( "undeletepagetext" ) );
 496
 497                 $sk = $wgUser->getSkin();
 498                 $undelete =& SpecialPage::getTitleFor( 'Undelete' );
 499                 $wgOut->addHTML( "<ul>\n" );
 500                 while( $row = $result->fetchObject() ) {
 501                         $title = Title::makeTitleSafe( $row->ar_namespace, $row->ar_title );
 502                         $link = $sk->makeKnownLinkObj( $undelete, htmlspecialchars( $title->getPrefixedText() ), 'target=' . $title->getPrefixedUrl() );
 503                         $revs = wfMsgHtml( 'undeleterevisions', $wgLang->formatNum( $row->count ) );
 504                         $wgOut->addHtml( "<li>{$link} ({$revs})</li>\n" );
 505                 }
 506                 $result->free();
 507                 $wgOut->addHTML( "</ul>\n" );
 508
 509                 return true;
 510         }
 511
 512         /* private */ function showRevision( $timestamp ) {
 513                 global $wgLang, $wgUser, $wgOut;
 514
 515                 if(!preg_match("/[0-9]{14}/",$timestamp)) return 0;
 516
 517                 $archive = new PageArchive( $this->mTargetObj );
 518                 $rev = $archive->getRevision( $timestamp );
 519
 520                 $wgOut->setPagetitle( wfMsg( "undeletepage" ) );
 521                 $wgOut->addWikiText( "(" . wfMsg( "undeleterevision",
 522                         $wgLang->date( $timestamp ) ) . ")\n" );
 523
 524                 if( !$rev ) {
 525                         $wgOut->addWikiText( wfMsg( 'undeleterevision-missing' ) );
 526                         return;
 527                 }
 528
 529                 wfRunHooks( 'UndeleteShowRevision', array( $this->mTargetObj, $rev ) );
 530
 531                 if( $this->mPreview ) {
 532                         $wgOut->addHtml( "<hr />\n" );
 533                         $wgOut->addWikiText( $rev->getText() );
 534                 }
 535
 536                 $self = SpecialPage::getTitleFor( "Undelete" );
 537
 538                 $wgOut->addHtml(
 539                         wfElement( 'textarea', array(
 540                                         'readonly' => true,
 541                                         'cols' => intval( $wgUser->getOption( 'cols' ) ),
 542                                         'rows' => intval( $wgUser->getOption( 'rows' ) ) ),
 543                                 $rev->getText() . "\n" ) .
 544                         wfOpenElement( 'div' ) .
 545                         wfOpenElement( 'form', array(
 546                                 'method' => 'post',
 547                                 'action' => $self->getLocalURL( "action=submit" ) ) ) .
 548                         wfElement( 'input', array(
 549                                 'type' => 'hidden',
 550                                 'name' => 'target',
 551                                 'value' => $this->mTargetObj->getPrefixedDbKey() ) ) .
 552                         wfElement( 'input', array(
 553                                 'type' => 'hidden',
 554                                 'name' => 'timestamp',
 555                                 'value' => $timestamp ) ) .
 556                         wfElement( 'input', array(
 557                                 'type' => 'hidden',
 558                                 'name' => 'wpEditToken',
 559                                 'value' => $wgUser->editToken() ) ) .
 560                         wfElement( 'input', array(
 561                                 'type' => 'hidden',
 562                                 'name' => 'preview',
 563                                 'value' => '1' ) ) .
 564                         wfElement( 'input', array(
 565                                 'type' => 'submit',
 566                                 'value' => wfMsg( 'showpreview' ) ) ) .
 567                         wfCloseElement( 'form' ) .
 568                         wfCloseElement( 'div' ) );
 569         }
 570
 571         /**
 572          * Show a deleted file version requested by the visitor.
 573          */
 574         function showFile( $key ) {
 575                 global $wgOut;
 576                 $wgOut->disable();
 577
 578                 $store = FileStore::get( 'deleted' );
 579                 $store->stream( $key );
 580         }
 581
 582         /* private */ function showHistory() {
 583                 global $wgLang, $wgUser, $wgOut;
 584
 585                 $sk = $wgUser->getSkin();
 586                 if ( $this->mAllowed ) {
 587                         $wgOut->setPagetitle( wfMsg( "undeletepage" ) );
 588                 } else {
 589                         $wgOut->setPagetitle( wfMsg( 'viewdeletedpage' ) );
 590                 }
 591
 592                 $archive = new PageArchive( $this->mTargetObj );
 593                 $text = $archive->getLastRevisionText();
 594                 /*
 595                 if( is_null( $text ) ) {
 596                         $wgOut->addWikiText( wfMsg( "nohistory" ) );
 597                         return;
 598                 }
 599                 */
 600                 if ( $this->mAllowed ) {
 601                         $wgOut->addWikiText( wfMsg( "undeletehistory" ) );
 602                 } else {
 603                         $wgOut->addWikiText( wfMsg( "undeletehistorynoadmin" ) );
 604                 }
 605
 606                 # List all stored revisions
 607                 $revisions = $archive->listRevisions();
 608                 $files = $archive->listFiles();
 609
 610                 $haveRevisions = $revisions && $revisions->numRows() > 0;
 611                 $haveFiles = $files && $files->numRows() > 0;
 612
 613                 # Batch existence check on user and talk pages
 614                 if( $haveRevisions ) {
 615                         $batch = new LinkBatch();
 616                         while( $row = $revisions->fetchObject() ) {
 617                                 $batch->addObj( Title::makeTitleSafe( NS_USER, $row->ar_user_text ) );
 618                                 $batch->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->ar_user_text ) );
 619                         }
 620                         $batch->execute();
 621                         $revisions->seek( 0 );
 622                 }
 623                 if( $haveFiles ) {
 624                         $batch = new LinkBatch();
 625                         while( $row = $files->fetchObject() ) {
 626                                 $batch->addObj( Title::makeTitleSafe( NS_USER, $row->fa_user_text ) );
 627                                 $batch->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->fa_user_text ) );
 628                         }
 629                         $batch->execute();
 630                         $files->seek( 0 );
 631                 }
 632
 633                 if ( $this->mAllowed ) {
 634                         $titleObj = SpecialPage::getTitleFor( "Undelete" );
 635                         $action = $titleObj->getLocalURL( "action=submit" );
 636                         # Start the form here
 637                         $top = wfOpenElement( 'form', array( 'method' => 'post', 'action' => $action, 'id' => 'undelete' ) );
 638                         $wgOut->addHtml( $top );
 639                 }
 640
 641                 # Show relevant lines from the deletion log:
 642                 $wgOut->addHTML( "<h2>" . htmlspecialchars( LogPage::logName( 'delete' ) ) . "</h2>\n" );
 643                 $logViewer = new LogViewer(
 644                         new LogReader(
 645                                 new FauxRequest(
 646                                         array( 'page' => $this->mTargetObj->getPrefixedText(),
 647                                                    'type' => 'delete' ) ) ) );
 648                 $logViewer->showList( $wgOut );
 649
 650                 if( $this->mAllowed && ( $haveRevisions || $haveFiles ) ) {
 651                         # Format the user-visible controls (comment field, submission button)
 652                         # in a nice little table
 653                         $table = '<fieldset><table><tr>';
 654                         $table .= '<td colspan="2">' . wfMsgWikiHtml( 'undeleteextrahelp' ) . '</td></tr><tr>';
 655                         $table .= '<td align="right"><strong>' . wfMsgHtml( 'undeletecomment' ) . '</strong></td>';
 656                         $table .= '<td>' . wfInput( 'wpComment', 50, $this->mComment ) . '</td>';
 657                         $table .= '</tr><tr><td>&nbsp;</td><td>';
 658                         $table .= wfSubmitButton( wfMsg( 'undeletebtn' ), array( 'name' => 'restore' ) );
 659                         $table .= wfElement( 'input', array( 'type' => 'reset', 'value' => wfMsg( 'undeletereset' ) ) );
 660                         $table .= '</td></tr></table></fieldset>';
 661                         $wgOut->addHtml( $table );
 662                 }
 663
 664                 $wgOut->addHTML( "<h2>" . htmlspecialchars( wfMsg( "history" ) ) . "</h2>\n" );
 665
 666                 if( $haveRevisions ) {
 667                         # The page's stored (deleted) history:
 668                         $wgOut->addHTML("<ul>");
 669                         $target = urlencode( $this->mTarget );
 670                         while( $row = $revisions->fetchObject() ) {
 671                                 $ts = wfTimestamp( TS_MW, $row->ar_timestamp );
 672                                 if ( $this->mAllowed ) {
 673                                         $checkBox = wfCheck( "ts$ts" );
 674                                         $pageLink = $sk->makeKnownLinkObj( $titleObj,
 675                                                 $wgLang->timeanddate( $ts, true ),
 676                                                 "target=$target&timestamp=$ts" );
 677                                 } else {
 678                                         $checkBox = '';
 679                                         $pageLink = $wgLang->timeanddate( $ts, true );
 680                                 }
 681                                 $userLink = $sk->userLink( $row->ar_user, $row->ar_user_text ) . $sk->userToolLinks( $row->ar_user, $row->ar_user_text );
 682                                 $comment = $sk->commentBlock( $row->ar_comment );
 683                                 $wgOut->addHTML( "<li>$checkBox $pageLink . . $userLink $comment</li>\n" );
 684
 685                         }
 686                         $revisions->free();
 687                         $wgOut->addHTML("</ul>");
 688                 } else {
 689                         $wgOut->addWikiText( wfMsg( "nohistory" ) );
 690                 }
 691
 692
 693                 if( $haveFiles ) {
 694                         $wgOut->addHtml( "<h2>" . wfMsgHtml( 'imghistory' ) . "</h2>\n" );
 695                         $wgOut->addHtml( "<ul>" );
 696                         while( $row = $files->fetchObject() ) {
 697                                 $ts = wfTimestamp( TS_MW, $row->fa_timestamp );
 698                                 if ( $this->mAllowed && $row->fa_storage_key ) {
 699                                         $checkBox = wfCheck( "fileid" . $row->fa_id );
 700                                         $key = urlencode( $row->fa_storage_key );
 701                                         $target = urlencode( $this->mTarget );
 702                                         $pageLink = $sk->makeKnownLinkObj( $titleObj,
 703                                                 $wgLang->timeanddate( $ts, true ),
 704                                                 "target=$target&file=$key" );
 705                                 } else {
 706                                         $checkBox = '';
 707                                         $pageLink = $wgLang->timeanddate( $ts, true );
 708                                 }
 709                                 $userLink = $sk->userLink( $row->fa_user, $row->fa_user_text ) . $sk->userToolLinks( $row->fa_user, $row->fa_user_text );
 710                                 $data =
 711                                         wfMsgHtml( 'widthheight',
 712                                                 $wgLang->formatNum( $row->fa_width ),
 713                                                 $wgLang->formatNum( $row->fa_height ) ) .
 714                                         ' (' .
 715                                         wfMsgHtml( 'nbytes', $wgLang->formatNum( $row->fa_size ) ) .
 716                                         ')';
 717                                 $comment = $sk->commentBlock( $row->fa_description );
 718                                 $wgOut->addHTML( "<li>$checkBox $pageLink . . $userLink $data $comment</li>\n" );
 719                         }
 720                         $files->free();
 721                         $wgOut->addHTML( "</ul>" );
 722                 }
 723
 724                 if ( $this->mAllowed ) {
 725                         # Slip in the hidden controls here
 726                         $misc  = wfHidden( 'target', $this->mTarget );
 727                         $misc .= wfHidden( 'wpEditToken', $wgUser->editToken() );
 728                         $wgOut->addHtml( $misc . '</form>' );
 729                 }
 730
 731                 return true;
 732         }
 733
 734         function undelete() {
 735                 global $wgOut, $wgUser;
 736                 if( !is_null( $this->mTargetObj ) ) {
 737                         $archive = new PageArchive( $this->mTargetObj );
 738                         $ok = true;
 739
 740                         $ok = $archive->undelete(
 741                                 $this->mTargetTimestamp,
 742                                 $this->mComment,
 743                                 $this->mFileVersions );
 744
 745                         if( $ok ) {
 746                                 $skin =& $wgUser->getSkin();
 747                                 $link = $skin->makeKnownLinkObj( $this->mTargetObj );
 748                                 $wgOut->addHtml( wfMsgWikiHtml( 'undeletedpage', $link ) );
 749                                 return true;
 750                         }
 751                 }
 752                 $wgOut->showFatalError( wfMsg( "cannotundelete" ) );
 753                 return false;
 754         }
 755 }
 756
 757 ?>