includes/specials/SpecialRevisiondelete.php

   1 <?php
   2 /**
   3  * Special page allowing users with the appropriate permissions to view
   4  * and hide revisions. Log items can also be hidden.
   5  *
   6  * @file
   7  * @ingroup SpecialPage
   8  */
   9
  10 class SpecialRevisionDelete extends UnlistedSpecialPage {
  11         /** Skin object */
  12         var $skin;
  13
  14         /** True if the submit button was clicked, and the form was posted */
  15         var $submitClicked;
  16
  17         /** Target ID list */
  18         var $ids;
  19
  20         /** Archive name, for reviewing deleted files */
  21         var $archiveName;
  22
  23         /** Edit token for securing image views against XSS */
  24         var $token;
  25
  26         /** Title object for target parameter */
  27         var $targetObj;
  28
  29         /** Deletion type, may be revision, archive, oldimage, filearchive, logging. */
  30         var $typeName;
  31
  32         /** Array of checkbox specs (message, name, deletion bits) */
  33         var $checks;
  34
  35         /** Information about the current type */
  36         var $typeInfo;
  37
  38         /** The RevDel_List object, storing the list of items to be deleted/undeleted */
  39         var $list;
  40
  41         /**
  42          * Assorted information about each type, needed by the special page.
  43          * TODO Move some of this to the list class
  44          */
  45         static $allowedTypes = array(
  46                 'revision' => array(
  47                         'check-label' => 'revdelete-hide-text',
  48                         'deletion-bits' => Revision::DELETED_TEXT,
  49                         'success' => 'revdelete-success',
  50                         'failure' => 'revdelete-failure',
  51                         'list-class' => 'RevDel_RevisionList',
  52                 ),
  53                 'archive' => array(
  54                         'check-label' => 'revdelete-hide-text',
  55                         'deletion-bits' => Revision::DELETED_TEXT,
  56                         'success' => 'revdelete-success',
  57                         'failure' => 'revdelete-failure',
  58                         'list-class' => 'RevDel_ArchiveList',
  59                 ),
  60                 'oldimage'=> array(
  61                         'check-label' => 'revdelete-hide-image',
  62                         'deletion-bits' => File::DELETED_FILE,
  63                         'success' => 'revdelete-success',
  64                         'failure' => 'revdelete-failure',
  65                         'list-class' => 'RevDel_FileList',
  66                 ),
  67                 'filearchive' => array(
  68                         'check-label' => 'revdelete-hide-image',
  69                         'deletion-bits' => File::DELETED_FILE,
  70                         'success' => 'revdelete-success',
  71                         'failure' => 'revdelete-failure',
  72                         'list-class' => 'RevDel_ArchivedFileList',
  73                 ),
  74                 'logging' => array(
  75                         'check-label' => 'revdelete-hide-name',
  76                         'deletion-bits' => LogPage::DELETED_ACTION,
  77                         'success' => 'logdelete-success',
  78                         'failure' => 'logdelete-failure',
  79                         'list-class' => 'RevDel_LogList',
  80                 ),
  81         );
  82
  83         /** Type map to support old log entries */
  84         static $deprecatedTypeMap = array(
  85                 'oldid' => 'revision',
  86                 'artimestamp' => 'archive',
  87                 'oldimage' => 'oldimage',
  88                 'fileid' => 'filearchive',
  89                 'logid' => 'logging',
  90         );
  91
  92         public function __construct() {
  93                 parent::__construct( 'Revisiondelete', 'deleterevision' );
  94         }
  95
  96         public function execute( $par ) {
  97                 global $wgOut, $wgUser, $wgRequest;
  98                 if( !$wgUser->isAllowed( 'deleterevision' ) ) {
  99                         $wgOut->permissionRequired( 'deleterevision' );
 100                         return;
 101                 } else if( wfReadOnly() ) {
 102                         $wgOut->readOnlyPage();
 103                         return;
 104                 }
 105                 $this->skin = $wgUser->getSkin();
 106                 $this->setHeaders();
 107                 $this->outputHeader();
 108                 $this->submitClicked = $wgRequest->wasPosted() && $wgRequest->getBool( 'wpSubmit' );
 109                 # Handle our many different possible input types.
 110                 $ids = $wgRequest->getVal( 'ids' );
 111                 if ( !is_null( $ids ) ) {
 112                         # Allow CSV, for backwards compatibility, or a single ID for show/hide links
 113                         $this->ids = explode( ',', $ids );
 114                 } else {
 115                         # Array input
 116                         $this->ids = array_keys( $wgRequest->getArray('ids',array()) );
 117                 }
 118                 // $this->ids = array_map( 'intval', $this->ids );
 119                 $this->ids = array_unique( array_filter( $this->ids ) );
 120
 121                 if ( $wgRequest->getVal( 'action' ) == 'revisiondelete' ) {
 122                         # For show/hide form submission from history page
 123                         $this->targetObj = $GLOBALS['wgTitle'];
 124                         $this->typeName = 'revision';
 125                 } else {
 126                         $this->typeName = $wgRequest->getVal( 'type' );
 127                         $this->targetObj = Title::newFromText( $wgRequest->getText( 'target' ) );
 128                 }
 129
 130                 # For reviewing deleted files...
 131                 $this->archiveName = $wgRequest->getVal( 'file' );
 132                 $this->token = $wgRequest->getVal( 'token' );
 133                 if ( $this->archiveName && $this->targetObj ) {
 134                         $this->tryShowFile( $this->archiveName );
 135                         return;
 136                 }
 137
 138                 if ( isset( self::$deprecatedTypeMap[$this->typeName] ) ) {
 139                         $this->typeName = self::$deprecatedTypeMap[$this->typeName];
 140                 }
 141
 142                 # No targets?
 143                 if( !isset( self::$allowedTypes[$this->typeName] ) || count( $this->ids ) == 0 ) {
 144                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 145                         return;
 146                 }
 147                 $this->typeInfo = self::$allowedTypes[$this->typeName];
 148
 149                 # If we have revisions, get the title from the first one
 150                 # since they should all be from the same page. This allows
 151                 # for more flexibility with page moves...
 152                 if( $this->typeName == 'revision' ) {
 153                         $rev = Revision::newFromId( $this->ids[0] );
 154                         $this->targetObj = $rev ? $rev->getTitle() : $this->targetObj;
 155                 }
 156
 157                 $this->otherReason = $wgRequest->getVal( 'wpReason' );
 158                 # We need a target page!
 159                 if( is_null($this->targetObj) ) {
 160                         $wgOut->addWikiMsg( 'undelete-header' );
 161                         return;
 162                 }
 163                 # Give a link to the logs/hist for this page
 164                 $this->showConvenienceLinks();
 165
 166                 # Initialise checkboxes
 167                 $this->checks = array(
 168                         array( $this->typeInfo['check-label'], 'wpHidePrimary', $this->typeInfo['deletion-bits'] ),
 169                         array( 'revdelete-hide-comment', 'wpHideComment', Revision::DELETED_COMMENT ),
 170                         array( 'revdelete-hide-user', 'wpHideUser', Revision::DELETED_USER )
 171                 );
 172                 if( $wgUser->isAllowed('suppressrevision') ) {
 173                         $this->checks[] = array( 'revdelete-hide-restricted',
 174                                 'wpHideRestricted', Revision::DELETED_RESTRICTED );
 175                 }
 176
 177                 # Either submit or create our form
 178                 if( $this->submitClicked ) {
 179                         $this->submit( $wgRequest );
 180                 } else {
 181                         $this->showForm();
 182                 }
 183                 $qc = $this->getLogQueryCond();
 184                 # Show relevant lines from the deletion log
 185                 $wgOut->addHTML( "<h2>" . htmlspecialchars( LogPage::logName( 'delete' ) ) . "</h2>\n" );
 186                 LogEventsList::showLogExtract( $wgOut, 'delete',
 187                         $this->targetObj->getPrefixedText(), '', 25, $qc );
 188                 # Show relevant lines from the suppression log
 189                 if( $wgUser->isAllowed( 'suppressionlog' ) ) {
 190                         $wgOut->addHTML( "<h2>" . htmlspecialchars( LogPage::logName( 'suppress' ) ) . "</h2>\n" );
 191                         LogEventsList::showLogExtract( $wgOut, 'suppress',
 192                                 $this->targetObj->getPrefixedText(), '', 25, $qc );
 193                 }
 194         }
 195
 196         /**
 197          * Show some useful links in the subtitle
 198          */
 199         protected function showConvenienceLinks() {
 200                 global $wgOut, $wgUser, $wgLang;
 201                 # Give a link to the logs/hist for this page
 202                 if( $this->targetObj ) {
 203                         $links = array();
 204                         $logtitle = SpecialPage::getTitleFor( 'Log' );
 205                         $links[] = $this->skin->linkKnown(
 206                                 $logtitle,
 207                                 wfMsgHtml( 'viewpagelogs' ),
 208                                 array(),
 209                                 array( 'page' => $this->targetObj->getPrefixedText() )
 210                         );
 211                         if ( $this->targetObj->getNamespace() != NS_SPECIAL ) {
 212                                 # Give a link to the page history
 213                                 $links[] = $this->skin->linkKnown(
 214                                         $this->targetObj,
 215                                         wfMsgHtml( 'pagehist' ),
 216                                         array(),
 217                                         array( 'action' => 'history' )
 218                                 );
 219                                 # Link to deleted edits
 220                                 if( $wgUser->isAllowed('undelete') ) {
 221                                         $undelete = SpecialPage::getTitleFor( 'Undelete' );
 222                                         $links[] = $this->skin->linkKnown(
 223                                                 $undelete,
 224                                                 wfMsgHtml( 'deletedhist' ),
 225                                                 array(),
 226                                                 array( 'target' => $this->targetObj->getPrefixedDBkey() )
 227                                         );
 228                                 }
 229                         }
 230                         # Logs themselves don't have histories or archived revisions
 231                         $wgOut->setSubtitle( '<p>' . $wgLang->pipeList( $links ) . '</p>' );
 232                 }
 233         }
 234
 235         /**
 236          * Get the condition used for fetching log snippets
 237          */
 238         protected function getLogQueryCond() {
 239                 $conds = array();
 240                 // Revision delete logs for these item
 241                 $conds['log_type'] = array('delete','suppress');
 242                 $conds['log_action'] = $this->getList()->getLogAction();
 243                 $conds['ls_field'] = RevisionDeleter::getRelationType( $this->typeName );
 244                 $conds['ls_value'] = $this->ids;
 245                 return $conds;
 246         }
 247
 248         /**
 249          * Show a deleted file version requested by the visitor.
 250          * TODO Mostly copied from Special:Undelete. Refactor.
 251          */
 252         protected function tryShowFile( $archiveName ) {
 253                 global $wgOut, $wgRequest, $wgUser, $wgLang;
 254
 255                 $repo = RepoGroup::singleton()->getLocalRepo();
 256                 $oimage = $repo->newFromArchiveName( $this->targetObj, $archiveName );
 257                 $oimage->load();
 258                 // Check if user is allowed to see this file
 259                 if ( !$oimage->exists() ) {
 260                         $wgOut->addWikiMsg( 'revdelete-no-file' );
 261                         return;
 262                 }
 263                 if( !$oimage->userCan(File::DELETED_FILE) ) {
 264                         $wgOut->permissionRequired( 'suppressrevision' );
 265                         return;
 266                 }
 267                 if ( !$wgUser->matchEditToken( $this->token, $archiveName ) ) {
 268                         $wgOut->addWikiMsg( 'revdelete-show-file-confirm',
 269                                 $this->targetObj->getText(),
 270                                 $wgLang->date( $oimage->getTimestamp() ),
 271                                 $wgLang->time( $oimage->getTimestamp() ) );
 272                         $wgOut->addHTML(
 273                                 Xml::openElement( 'form', array(
 274                                         'method' => 'POST',
 275                                         'action' => $this->getTitle()->getLocalUrl(
 276                                                 'target=' . urlencode( $oimage->getName() ) .
 277                                                 '&file=' . urlencode( $archiveName ) .
 278                                                 '&token=' . urlencode( $wgUser->editToken( $archiveName ) ) )
 279                                         )
 280                                 ) .
 281                                 Xml::submitButton( wfMsg( 'revdelete-show-file-submit' ) ) .
 282                                 '</form>'
 283                         );
 284                         return;
 285                 }
 286                 $wgOut->disable();
 287                 # We mustn't allow the output to be Squid cached, otherwise
 288                 # if an admin previews a deleted image, and it's cached, then
 289                 # a user without appropriate permissions can toddle off and
 290                 # nab the image, and Squid will serve it
 291                 $wgRequest->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
 292                 $wgRequest->response()->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
 293                 $wgRequest->response()->header( 'Pragma: no-cache' );
 294
 295                 # Stream the file to the client
 296                 global $IP;
 297                 require_once( "$IP/includes/StreamFile.php" );
 298                 $key = $oimage->getStorageKey();
 299                 $path = $repo->getZonePath( 'deleted' ) . '/' . $repo->getDeletedHashPath( $key ) . $key;
 300                 wfStreamFile( $path );
 301         }
 302
 303         /**
 304          * Get the list object for this request
 305          */
 306         protected function getList() {
 307                 if ( is_null( $this->list ) ) {
 308                         $class = $this->typeInfo['list-class'];
 309                         $this->list = new $class( $this, $this->targetObj, $this->ids );
 310                 }
 311                 return $this->list;
 312         }
 313
 314         /**
 315          * Show a list of items that we will operate on, and show a form with checkboxes
 316          * which will allow the user to choose new visibility settings.
 317          */
 318         protected function showForm() {
 319                 global $wgOut, $wgUser, $wgLang;
 320                 $UserAllowed = true;
 321
 322                 if ( $this->typeName == 'logging' ) {
 323                         $wgOut->addWikiMsg( 'logdelete-selected', $wgLang->formatNum( count($this->ids) ) );
 324                 } else {
 325                         $wgOut->addWikiMsg( 'revdelete-selected',
 326                                 $this->targetObj->getPrefixedText(), count( $this->ids ) );
 327                 }
 328
 329                 $bitfields = 0;
 330                 $wgOut->addHTML( "<ul>" );
 331
 332                 $where = $revObjs = array();
 333
 334                 $numRevisions = 0;
 335                 // Live revisions...
 336                 $list = $this->getList();
 337                 for ( $list->reset(); $list->current(); $list->next() ) {
 338                         $item = $list->current();
 339                         if ( !$item->canView() ) {
 340                                 if( !$this->submitClicked ) {
 341                                         $wgOut->permissionRequired( 'suppressrevision' );
 342                                         return;
 343                                 }
 344                                 $UserAllowed = false;
 345                         }
 346                         $numRevisions++;
 347                         $bitfields |= $item->getBits();
 348                         $wgOut->addHTML( $item->getHTML() );
 349                 }
 350
 351                 if( !$numRevisions ) {
 352                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 353                         return;
 354                 }
 355
 356                 $wgOut->addHTML( "</ul>" );
 357                 // Explanation text
 358                 $this->addUsageText();
 359
 360                 // Normal sysops can always see what they did, but can't always change it
 361                 if( !$UserAllowed ) return;
 362
 363                 $out =  Xml::openElement( 'form', array( 'method' => 'post',
 364                                 'action' => $this->getTitle()->getLocalUrl( array( 'action' => 'submit' ) ),
 365                                 'id' => 'mw-revdel-form-revisions' ) ) .
 366                         Xml::fieldset( wfMsg( 'revdelete-legend' ) ) .
 367                         Xml::openElement( 'table' ) .
 368                         $this->buildCheckBoxes( $bitfields ) .
 369                         "<tr>\n" .
 370                                 '<td class="mw-label">' .
 371                                         Xml::label( wfMsg( 'revdelete-log' ), 'wpRevDeleteReasonList' ) .
 372                                 '</td>' .
 373                                 '<td class="mw-input">' .
 374                                         Xml::listDropDown( 'wpRevDeleteReasonList',
 375                                                 wfMsgForContent( 'revdelete-reason-dropdown' ),
 376                                                 wfMsgForContent( 'revdelete-reasonotherlist' ), '', 'wpReasonDropDown', 1
 377                                         ) .
 378                                 '</td>' .
 379                         "</tr><tr>\n" .
 380                                 '<td class="mw-label">' .
 381                                         Xml::label( wfMsg( 'revdelete-otherreason' ), 'wpReason' ) .
 382                                 '</td>' .
 383                                 '<td class="mw-input">' .
 384                                         Xml::input( 'wpReason', 60, $this->otherReason, array( 'id' => 'wpReason' ) ) .
 385                                 '</td>' .
 386                         "</tr><tr>\n" .
 387                                 '<td></td>' .
 388                                 '<td class="mw-submit">' .
 389                                         Xml::submitButton( wfMsg( 'revdelete-submit' ), array( 'name' => 'wpSubmit' ) ) .
 390                                 '</td>' .
 391                         "</tr>\n" .
 392                         Xml::closeElement( 'table' ) .
 393                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ) .
 394                         Xml::hidden( 'target', $this->targetObj->getPrefixedText() ) .
 395                         Xml::hidden( 'type', $this->typeName ) .
 396                         Xml::hidden( 'ids', implode( ',', $this->ids ) ) .
 397                         Xml::closeElement( 'fieldset' ) . "\n";
 398
 399                 if( $wgUser->isAllowed( 'editinterface' ) ) {
 400                         $title = Title::makeTitle( NS_MEDIAWIKI, 'revdelete-reason-dropdown' );
 401                         $link = $wgUser->getSkin()->link(
 402                                 $title,
 403                                 wfMsgHtml( 'revdelete-edit-reasonlist' ),
 404                                 array(),
 405                                 array( 'action' => 'edit' )
 406                         );
 407                         $out .= Xml::tags( 'p', array( 'class' => 'mw-revdel-editreasons' ), $link ) . "\n";
 408                 }
 409                 $out .= Xml::closeElement( 'form' ) . "\n";
 410
 411                 $wgOut->addHTML( $out );
 412         }
 413
 414         /**
 415          * Show some introductory text
 416          * FIXME Wikimedia-specific policy text
 417          */
 418         protected function addUsageText() {
 419                 global $wgOut, $wgUser;
 420                 $wgOut->addWikiMsg( 'revdelete-text' );
 421                 if( $wgUser->isAllowed( 'suppressrevision' ) ) {
 422                         $wgOut->addWikiMsg( 'revdelete-suppress-text' );
 423                 }
 424         }
 425
 426         /**
 427         * @param $bitfields Interger: aggregate bitfield of all the bitfields
 428         * @return String: HTML
 429         */
 430         protected function buildCheckBoxes( $bitfields ) {
 431                 $html = '';
 432                 // FIXME: all items checked for just one rev are checked, even if not set for the others
 433                 foreach( $this->checks as $item ) {
 434                         list( $message, $name, $field ) = $item;
 435                         $innerHTML = Xml::checkLabel( wfMsg($message), $name, $name, $bitfields & $field );
 436                         if( $field == Revision::DELETED_RESTRICTED )
 437                                 $innerHTML = "<b>$innerHTML</b>";
 438                         $line = Xml::tags( 'td', array( 'class' => 'mw-input' ), $innerHTML );
 439                         $html .= '<tr><td></td>' . $line . "</tr>\n";
 440                 }
 441                 return $html;
 442         }
 443
 444         /**
 445          * UI entry point for form submission.
 446          * @param $request WebRequest
 447          */
 448         protected function submit( $request ) {
 449                 global $wgUser, $wgOut;
 450                 # Check edit token on submission
 451                 if( $this->submitClicked && !$wgUser->matchEditToken( $request->getVal('wpEditToken') ) ) {
 452                         $wgOut->addWikiMsg( 'sessionfailure' );
 453                         return false;
 454                 }
 455                 $bitfield = $this->extractBitfield( $request );
 456                 $listReason = $request->getText( 'wpRevDeleteReasonList', 'other' ); // from dropdown
 457                 $comment = $listReason;
 458                 if( $comment != 'other' && $this->otherReason != '' ) {
 459                         // Entry from drop down menu + additional comment
 460                         $comment .= wfMsgForContent( 'colon-separator' ) . $this->otherReason;
 461                 } elseif( $comment == 'other' ) {
 462                         $comment = $this->otherReason;
 463                 }
 464                 # Can the user set this field?
 465                 if( $bitfield & Revision::DELETED_RESTRICTED && !$wgUser->isAllowed('suppressrevision') ) {
 466                         $wgOut->permissionRequired( 'suppressrevision' );
 467                         return false;
 468                 }
 469                 # If the save went through, go to success message...
 470                 $status = $this->save( $bitfield, $comment, $this->targetObj );
 471                 if ( $status->isGood() ) {
 472                         $this->success();
 473                         return true;
 474                 # ...otherwise, bounce back to form...
 475                 } else {
 476                         $this->failure( $status );
 477                 }
 478                 return false;
 479         }
 480
 481         /**
 482          * Report that the submit operation succeeded
 483          */
 484         protected function success() {
 485                 global $wgOut;
 486                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 487                 $wgOut->wrapWikiMsg( '<span class="success">$1</span>', $this->typeInfo['success'] );
 488                 $this->list->reloadFromMaster();
 489                 $this->showForm();
 490         }
 491
 492         /**
 493          * Report that the submit operation failed
 494          */
 495         protected function failure( $status ) {
 496                 global $wgOut;
 497                 $wgOut->setPagetitle( wfMsg( 'actionfailed' ) );
 498                 $wgOut->addWikiText( $status->getWikiText( $this->typeInfo['failure'] ) );
 499                 $this->showForm();
 500         }
 501
 502         /**
 503          * Put together a rev_deleted bitfield from the submitted checkboxes
 504          * @param $request WebRequest
 505          * @return Integer
 506          */
 507         protected function extractBitfield( $request ) {
 508                 $bitfield = 0;
 509                 foreach( $this->checks as $item ) {
 510                         list( /* message */ , $name, $field ) = $item;
 511                         if( $request->getCheck( $name ) ) {
 512                                 $bitfield |= $field;
 513                         }
 514                 }
 515                 return $bitfield;
 516         }
 517
 518         /**
 519          * Do the write operations. Simple wrapper for RevDel_*List::setVisibility().
 520          */
 521         protected function save( $bitfield, $reason, $title ) {
 522                 // Don't allow simply locking the interface for no reason
 523                 if( $bitfield == Revision::DELETED_RESTRICTED ) {
 524                         return Status::newFatal( 'revdelete-only-restricted' );
 525                 }
 526                 return $this->getList()->setVisibility( array(
 527                         'value' => $bitfield,
 528                         'comment' => $reason ) );
 529         }
 530 }
 531
 532 /**
 533  * Temporary b/c interface, collection of static functions.
 534  * @ingroup SpecialPage
 535  */
 536 class RevisionDeleter {
 537         /**
 538          * Checks for a change in the bitfield for a certain option and updates the
 539          * provided array accordingly.
 540          *
 541          * @param $desc String: description to add to the array if the option was
 542          * enabled / disabled.
 543          * @param $field Integer: the bitmask describing the single option.
 544          * @param $diff Integer: the xor of the old and new bitfields.
 545          * @param $new Integer: the new bitfield
 546          * @param $arr Array: the array to update.
 547          */
 548         protected static function checkItem( $desc, $field, $diff, $new, &$arr ) {
 549                 if( $diff & $field ) {
 550                         $arr[ ( $new & $field ) ? 0 : 1 ][] = $desc;
 551                 }
 552         }
 553
 554         /**
 555          * Gets an array describing the changes made to the visibilit of the revision.
 556          * If the resulting array is $arr, then $arr[0] will contain an array of strings
 557          * describing the items that were hidden, $arr[2] will contain an array of strings
 558          * describing the items that were unhidden, and $arr[3] will contain an array with
 559          * a single string, which can be one of "applied restrictions to sysops",
 560          * "removed restrictions from sysops", or null.
 561          *
 562          * @param $n Integer: the new bitfield.
 563          * @param $o Integer: the old bitfield.
 564          * @return An array as described above.
 565          */
 566         protected static function getChanges( $n, $o ) {
 567                 $diff = $n ^ $o;
 568                 $ret = array( 0 => array(), 1 => array(), 2 => array() );
 569                 // Build bitfield changes in language
 570                 self::checkItem( wfMsgForContent( 'revdelete-content' ),
 571                         Revision::DELETED_TEXT, $diff, $n, $ret );
 572                 self::checkItem( wfMsgForContent( 'revdelete-summary' ),
 573                         Revision::DELETED_COMMENT, $diff, $n, $ret );
 574                 self::checkItem( wfMsgForContent( 'revdelete-uname' ),
 575                         Revision::DELETED_USER, $diff, $n, $ret );
 576                 // Restriction application to sysops
 577                 if( $diff & Revision::DELETED_RESTRICTED ) {
 578                         if( $n & Revision::DELETED_RESTRICTED )
 579                                 $ret[2][] = wfMsgForContent( 'revdelete-restricted' );
 580                         else
 581                                 $ret[2][] = wfMsgForContent( 'revdelete-unrestricted' );
 582                 }
 583                 return $ret;
 584         }
 585
 586         /**
 587          * Gets a log message to describe the given revision visibility change. This
 588          * message will be of the form "[hid {content, edit summary, username}];
 589          * [unhid {...}][applied restrictions to sysops] for $count revisions: $comment".
 590          *
 591          * @param $count Integer: The number of effected revisions.
 592          * @param $nbitfield Integer: The new bitfield for the revision.
 593          * @param $obitfield Integer: The old bitfield for the revision.
 594          * @param $isForLog Boolean
 595          */
 596         public static function getLogMessage( $count, $nbitfield, $obitfield, $isForLog = false ) {
 597                 global $wgLang;
 598                 $s = '';
 599                 $changes = self::getChanges( $nbitfield, $obitfield );
 600                 if( count( $changes[0] ) ) {
 601                         $s .= wfMsgForContent( 'revdelete-hid', implode( ', ', $changes[0] ) );
 602                 }
 603                 if( count( $changes[1] ) ) {
 604                         if ($s) $s .= '; ';
 605                         $s .= wfMsgForContent( 'revdelete-unhid', implode( ', ', $changes[1] ) );
 606                 }
 607                 if( count( $changes[2] ) ) {
 608                         $s .= $s ? ' (' . $changes[2][0] . ')' : $changes[2][0];
 609                 }
 610                 $msg = $isForLog ? 'logdelete-log-message' : 'revdelete-log-message';
 611                 return wfMsgExt( $msg, array( 'parsemag', 'content' ), $s, $wgLang->formatNum($count) );
 612
 613         }
 614
 615         // Get DB field name for URL param...
 616         // Future code for other things may also track
 617         // other types of revision-specific changes.
 618         public static function getRelationType( $typeName ) {
 619                 if ( isset( SpecialRevisionDelete::$deprecatedTypeMap[$typeName] ) ) {
 620                         $typeName = SpecialRevisionDelete::$deprecatedTypeMap[$typeName];
 621                 }
 622                 if ( isset( SpecialRevisionDelete::$allowedTypes[$typeName] ) ) {
 623                         $class = SpecialRevisionDelete::$allowedTypes[$typeName]['list-class'];
 624                         $list = new $class( null, null, null );
 625                         return $list->getIdField();
 626                 } else {
 627                         return null;
 628                 }
 629         }
 630 }
 631
 632 /**
 633  * Abstract base class for a list of deletable items
 634  */
 635 abstract class RevDel_List {
 636         var $special, $title, $ids, $res, $current;
 637         var $type = null; // override this
 638         var $idField = null; // override this
 639         var $dateField = false; // override this
 640
 641         /**
 642          * @param $special The parent SpecialPage
 643          * @param $title The target title
 644          * @param $ids Array of IDs
 645          */
 646         public function __construct( $special, $title, $ids ) {
 647                 $this->special = $special;
 648                 $this->title = $title;
 649                 $this->ids = $ids;
 650         }
 651
 652         /**
 653          * Get the internal type name of this list. Equal to the table name.
 654          */
 655         public function getType() {
 656                 return $this->type;
 657         }
 658
 659         /**
 660          * Get the DB field name associated with the ID list/
 661          */
 662         public function getIdField() {
 663                 return $this->idField;
 664         }
 665
 666         /**
 667          * Get the DB field name storing timestamps
 668          */
 669         public function getTimestampField() {
 670                 return $this->dateField;
 671         }
 672
 673         /**
 674          * Set the visibility for the revisions in this list. Logging and
 675          * transactions are done here.
 676          *
 677          * @param $params Associative array of parameters. Members are:
 678          *     value:       The integer value to set the visibility to
 679          *     comment:     The log comment.
 680          * @return Status
 681          */
 682         public function setVisibility( $params ) {
 683                 $newBits = $params['value'];
 684                 $comment = $params['comment'];
 685
 686                 $this->res = false;
 687                 $dbw = wfGetDB( DB_MASTER );
 688                 $this->doQuery( $dbw );
 689                 $dbw->begin();
 690                 $status = Status::newGood();
 691                 $missing = array_flip( $this->ids );
 692                 $this->clearFileOps();
 693                 $idsForLog = array();
 694
 695                 for ( $this->reset(); $this->current(); $this->next() ) {
 696                         $item = $this->current();
 697                         unset( $missing[ $item->getId() ] );
 698
 699                         // Make error messages less vague
 700                         $oldBits = $item->getBits();
 701                         if ( $oldBits == $newBits ) {
 702                                 $status->warning( 'revdelete-no-change', $item->formatDate(), $item->formatTime() );
 703                                 $status->failCount++;
 704                                 continue;
 705                         } elseif ( $oldBits == 0 && $newBits != 0 ) {
 706                                 $opType = 'hide';
 707                         } elseif ( $oldBits != 0 && $newBits == 0 ) {
 708                                 $opType = 'show';
 709                         } else {
 710                                 $opType = 'modify';
 711                         }
 712
 713                         if ( $item->isHideCurrentOp( $newBits ) ) {
 714                                 // Cannot hide current version text
 715                                 $status->error( 'revdelete-hide-current', $item->formatDate(), $item->formatTime() );
 716                                 $status->failCount++;
 717                                 continue;
 718                         }
 719                         if ( !$item->canView() ) {
 720                                 // Cannot access this revision
 721                                 $msg = $opType == 'show' ? 'revdelete-show-no-access' : 'revdelete-modify-no-access';
 722                                 $status->error( $msg, $item->formatDate(), $item->formatTime() );
 723                                 $status->failCount++;
 724                                 continue;
 725                         }
 726
 727                         // Update the revision
 728                         $ok = $item->setBits( $newBits );
 729
 730                         if ( $ok ) {
 731                                 $idsForLog[] = $item->getId();
 732                                 $status->successCount++;
 733                         } else {
 734                                 $status->error( 'revdelete-concurrent-change', $item->formatDate(), $item->formatTime() );
 735                                 $status->failCount++;
 736                         }
 737                 }
 738
 739                 // Handle missing revisions
 740                 foreach ( $missing as $id => $unused ) {
 741                         $status->error( 'revdelete-modify-missing', $id );
 742                         $status->failCount++;
 743                 }
 744
 745                 if ( $status->successCount == 0 ) {
 746                         $status->ok = false;
 747                         $dbw->rollback();
 748                         return $status;
 749                 }
 750
 751                 // Save success count
 752                 $successCount = $status->successCount;
 753
 754                 // Move files, if there are any
 755                 $status->merge( $this->doPreCommitUpdates() );
 756                 if ( !$status->isOK() ) {
 757                         // Fatal error, such as no configured archive directory
 758                         $dbw->rollback();
 759                         return $status;
 760                 }
 761
 762                 // Log it
 763                 $this->updateLog( array(
 764                         'title' => $this->title,
 765                         'count' => $successCount,
 766                         'newBits' => $newBits,
 767                         'oldBits' => $oldBits,
 768                         'comment' => $comment,
 769                         'ids' => $idsForLog,
 770                 ) );
 771                 $dbw->commit();
 772
 773                 // Clear caches
 774                 $status->merge( $this->doPostCommitUpdates() );
 775                 return $status;
 776         }
 777
 778         /**
 779          * Reload the list data from the master DB. This can be done after setVisibility()
 780          * to allow $item->getHTML() to show the new data.
 781          */
 782         function reloadFromMaster() {
 783                 $dbw = wfGetDB( DB_MASTER );
 784                 $this->res = $this->doQuery( $dbw );
 785         }
 786
 787         /**
 788          * Record a log entry on the action
 789          * @param $params Associative array of parameters:
 790          *     newBits:         The new value of the *_deleted bitfield
 791          *     oldBits:         The old value of the *_deleted bitfield.
 792          *     title:           The target title
 793          *     ids:             The ID list
 794          *     comment:         The log comment
 795          */
 796         protected function updateLog( $params ) {
 797                 // Get the URL param's corresponding DB field
 798                 $field = RevisionDeleter::getRelationType( $this->getType() );
 799                 if( !$field ) {
 800                         throw new MWException( "Bad log URL param type!" );
 801                 }
 802                 // Put things hidden from sysops in the oversight log
 803                 if ( ( $params['newBits'] | $params['oldBits'] ) & $this->getSuppressBit() ) {
 804                         $logType = 'suppress';
 805                 } else {
 806                         $logType = 'delete';
 807                 }
 808                 // Add params for effected page and ids
 809                 $logParams = $this->getLogParams( $params );
 810                 // Actually add the deletion log entry
 811                 $log = new LogPage( $logType );
 812                 $logid = $log->addEntry( $this->getLogAction(), $params['title'],
 813                         $params['comment'], $logParams );
 814                 // Allow for easy searching of deletion log items for revision/log items
 815                 $log->addRelations( $field, $params['ids'], $logid );
 816         }
 817
 818         /**
 819          * Get the log action for this list type
 820          */
 821         public function getLogAction() {
 822                 return 'revision';
 823         }
 824
 825         /**
 826          * Get log parameter array.
 827          * @param $params Associative array of log parameters, same as updateLog()
 828          * @return array
 829          */
 830         public function getLogParams( $params ) {
 831                 return array(
 832                         $this->getType(),
 833                         implode( ',', $params['ids'] ),
 834                         "ofield={$params['oldBits']}",
 835                         "nfield={$params['newBits']}"
 836                 );
 837         }
 838
 839         /**
 840          * Initialise the current iteration pointer
 841          */
 842         protected function initCurrent() {
 843                 $row = $this->res->current();
 844                 if ( $row ) {
 845                         $this->current = $this->newItem( $row );
 846                 } else {
 847                         $this->current = false;
 848                 }
 849         }
 850
 851         /**
 852          * Start iteration. This must be called before current() or next().
 853          * @return First list item
 854          */
 855         public function reset() {
 856                 if ( !$this->res ) {
 857                         $this->res = $this->doQuery( wfGetDB( DB_SLAVE ) );
 858                 } else {
 859                         $this->res->rewind();
 860                 }
 861                 $this->initCurrent();
 862                 return $this->current;
 863         }
 864
 865         /**
 866          * Get the current list item, or false if we are at the end
 867          */
 868         public function current() {
 869                 return $this->current;
 870         }
 871
 872         /**
 873          * Move the iteration pointer to the next list item, and return it.
 874          */
 875         public function next() {
 876                 $this->res->next();
 877                 $this->initCurrent();
 878                 return $this->current;
 879         }
 880
 881         /**
 882          * Clear any data structures needed for doPreCommitUpdates() and doPostCommitUpdates()
 883          * STUB
 884          */
 885         public function clearFileOps() {
 886         }
 887
 888         /**
 889          * A hook for setVisibility(): do batch updates pre-commit.
 890          * STUB
 891          * @return Status
 892          */
 893         public function doPreCommitUpdates() {
 894                 return Status::newGood();
 895         }
 896
 897         /**
 898          * A hook for setVisibility(): do any necessary updates post-commit.
 899          * STUB
 900          * @return Status
 901          */
 902         public function doPostCommitUpdates() {
 903                 return Status::newGood();
 904         }
 905
 906         /**
 907          * Create an item object from a DB result row
 908          * @param $row stdclass
 909          */
 910         abstract public function newItem( $row );
 911
 912         /**
 913          * Do the DB query to iterate through the objects.
 914          * @param $db Database object to use for the query
 915          */
 916         abstract public function doQuery( $db );
 917
 918         /**
 919          * Get the integer value of the flag used for suppression
 920          */
 921         abstract public function getSuppressBit();
 922 }
 923
 924 /**
 925  * Abstract base class for deletable items
 926  */
 927 abstract class RevDel_Item {
 928         /** The parent SpecialPage */
 929         var $special;
 930
 931         /** The parent RevDel_List */
 932         var $list;
 933
 934         /** The DB result row */
 935         var $row;
 936
 937         /**
 938          * @param $list RevDel_List
 939          * @param $row DB result row
 940          */
 941         public function __construct( $list, $row ) {
 942                 $this->special = $list->special;
 943                 $this->list = $list;
 944                 $this->row = $row;
 945         }
 946
 947         /**
 948          * Get the ID, as it would appear in the ids URL parameter
 949          */
 950         public function getId() {
 951                 $field = $this->list->getIdField();
 952                 return $this->row->$field;
 953         }
 954
 955         /**
 956          * Get the date, formatted with $wgLang
 957          */
 958         public function formatDate() {
 959                 global $wgLang;
 960                 return $wgLang->date( $this->getTimestamp() );
 961         }
 962
 963         /**
 964          * Get the time, formatted with $wgLang
 965          */
 966         public function formatTime() {
 967                 global $wgLang;
 968                 return $wgLang->time( $this->getTimestamp() );
 969         }
 970
 971         /**
 972          * Get the timestamp in MW 14-char form
 973          */
 974         public function getTimestamp() {
 975                 $field = $this->list->getTimestampField();
 976                 return wfTimestamp( TS_MW, $this->row->$field );
 977         }
 978
 979         /**
 980          * Returns true if the item is "current", and the operation to set the given
 981          * bits can't be executed for that reason
 982          * STUB
 983          */
 984         public function isHideCurrentOp( $newBits ) {
 985                 return false;
 986         }
 987
 988         /**
 989          * Returns true if the current user can view the item
 990          */
 991         abstract public function canView();
 992
 993         /**
 994          * Get the current deletion bitfield value
 995          */
 996         abstract public function getBits();
 997
 998         /**
 999          * Get the HTML of the list item. Should be include <li></li> tags.
1000          * This is used to show the list in HTML form, by the special page.
1001          */
1002         abstract public function getHTML();
1003
1004         /**
1005          * Set the visibility of the item. This should do any necessary DB queries.
1006          *
1007          * The DB update query should have a condition which forces it to only update
1008          * if the value in the DB matches the value fetched earlier with the SELECT.
1009          * If the update fails because it did not match, the function should return
1010          * false. This prevents concurrency problems.
1011          *
1012          * @return boolean success
1013          */
1014         abstract public function setBits( $newBits );
1015 }
1016
1017 /**
1018  * List for revision table items
1019  */
1020 class RevDel_RevisionList extends RevDel_List {
1021         var $currentRevId;
1022         var $type = 'revision';
1023         var $idField = 'rev_id';
1024         var $dateField = 'rev_timestamp';
1025
1026         public function doQuery( $db ) {
1027                 $ids = array_map( 'intval', $this->ids );
1028                 return $db->select( array('revision','page'), '*',
1029                         array(
1030                                 'rev_page' => $this->title->getArticleID(),
1031                                 'rev_id'   => $ids,
1032                                 'rev_page = page_id'
1033                         ),
1034                         __METHOD__
1035                 );
1036         }
1037
1038         public function newItem( $row ) {
1039                 return new RevDel_RevisionItem( $this, $row );
1040         }
1041
1042         public function getCurrent() {
1043                 if ( is_null( $this->currentRevId ) ) {
1044                         $dbw = wfGetDB( DB_MASTER );
1045                         $this->currentRevId = $dbw->selectField(
1046                                 'page', 'page_latest', $this->title->pageCond(), __METHOD__ );
1047                 }
1048                 return $this->currentRevId;
1049         }
1050
1051         public function getSuppressBit() {
1052                 return Revision::DELETED_RESTRICTED;
1053         }
1054
1055         public function doPreCommitUpdates() {
1056                 $this->title->invalidateCache();
1057                 return Status::newGood();
1058         }
1059
1060         public function doPostCommitUpdates() {
1061                 $this->title->purgeSquid();
1062                 // Extensions that require referencing previous revisions may need this
1063                 wfRunHooks( 'ArticleRevisionVisiblitySet', array( &$this->title ) );
1064                 return Status::newGood();
1065         }
1066 }
1067
1068 /**
1069  * Item class for a revision table row
1070  */
1071 class RevDel_RevisionItem extends RevDel_Item {
1072         var $revision;
1073
1074         public function __construct( $list, $row ) {
1075                 parent::__construct( $list, $row );
1076                 $this->revision = new Revision( $row );
1077         }
1078
1079         public function canView() {
1080                 return $this->revision->userCan( Revision::DELETED_RESTRICTED );
1081         }
1082
1083         public function getBits() {
1084                 return $this->revision->mDeleted;
1085         }
1086
1087         public function setBits( $bits ) {
1088                 $dbw = wfGetDB( DB_MASTER );
1089                 // Update revision table
1090                 $dbw->update( 'revision',
1091                         array( 'rev_deleted' => $bits ),
1092                         array(
1093                                 'rev_id' => $this->revision->getId(),
1094                                 'rev_page' => $this->revision->getPage(),
1095                                 'rev_deleted' => $this->getBits()
1096                         ),
1097                         __METHOD__
1098                 );
1099                 if ( !$dbw->affectedRows() ) {
1100                         // Concurrent fail!
1101                         return false;
1102                 }
1103                 // Update recentchanges table
1104                 $dbw->update( 'recentchanges',
1105                         array(
1106                                 'rc_deleted' => $bits,
1107                                 'rc_patrolled' => 1
1108                         ),
1109                         array(
1110                                 'rc_this_oldid' => $this->revision->getId(), // condition
1111                                 // non-unique timestamp index
1112                                 'rc_timestamp' => $dbw->timestamp( $this->revision->getTimestamp() ),
1113                         ),
1114                         __METHOD__
1115                 );
1116                 return true;
1117         }
1118
1119         public function isDeleted() {
1120                 return $this->revision->isDeleted( Revision::DELETED_TEXT );
1121         }
1122
1123         public function isHideCurrentOp( $newBits ) {
1124                 return ( $newBits & Revision::DELETED_TEXT )
1125                         && $this->list->getCurrent() == $this->getId();
1126         }
1127
1128         /**
1129          * Get the HTML link to the revision text.
1130          * Overridden by RevDel_ArchiveItem.
1131          */
1132         protected function getRevisionLink() {
1133                 global $wgLang;
1134                 $date = $wgLang->timeanddate( $this->revision->getTimestamp() );
1135                 if ( $this->isDeleted() && !$this->canView() ) {
1136                         return $date;
1137                 }
1138                 return $this->special->skin->link(
1139                         $this->list->title,
1140                         $date,
1141                         array(),
1142                         array(
1143                                 'oldid' => $this->revision->getId(),
1144                                 'unhide' => 1
1145                         )
1146                 );
1147         }
1148
1149         /**
1150          * Get the HTML link to the diff.
1151          * Overridden by RevDel_ArchiveItem
1152          */
1153         protected function getDiffLink() {
1154                 if ( $this->isDeleted() && !$this->canView() ) {
1155                         return wfMsgHtml('diff');
1156                 } else {
1157                         return
1158                                 $this->special->skin->link(
1159                                         $this->list->title,
1160                                         wfMsgHtml('diff'),
1161                                         array(),
1162                                         array(
1163                                                 'diff' => $this->revision->getId(),
1164                                                 'oldid' => 'prev',
1165                                                 'unhide' => 1
1166                                         ),
1167                                         array(
1168                                                 'known',
1169                                                 'noclasses'
1170                                         )
1171                                 );
1172                 }
1173         }
1174
1175         public function getHTML() {
1176                 $difflink = $this->getDiffLink();
1177                 $revlink = $this->getRevisionLink();
1178                 $userlink = $this->special->skin->revUserLink( $this->revision );
1179                 $comment = $this->special->skin->revComment( $this->revision );
1180                 if ( $this->isDeleted() ) {
1181                         $revlink = "<span class=\"history-deleted\">$revlink</span>";
1182                 }
1183                 return "<li>($difflink) $revlink $userlink $comment</li>";
1184         }
1185 }
1186
1187 /**
1188  * List for archive table items, i.e. revisions deleted via action=delete
1189  */
1190 class RevDel_ArchiveList extends RevDel_RevisionList {
1191         var $type = 'archive';
1192         var $idField = 'ar_timestamp';
1193         var $dateField = 'ar_timestamp';
1194
1195         public function doQuery( $db ) {
1196                 $timestamps = array();
1197                 foreach ( $this->ids as $id ) {
1198                         $timestamps[] = $db->timestamp( $id );
1199                 }
1200                 return $db->select( 'archive', '*',
1201                                 array(
1202                                         'ar_namespace' => $this->title->getNamespace(),
1203                                         'ar_title'     => $this->title->getDBkey(),
1204                                         'ar_timestamp' => $timestamps
1205                                 ),
1206                                 __METHOD__
1207                         );
1208         }
1209
1210         public function newItem( $row ) {
1211                 return new RevDel_ArchiveItem( $this, $row );
1212         }
1213
1214         public function doPreCommitUpdates() {
1215                 return Status::newGood();
1216         }
1217
1218         public function doPostCommitUpdates() {
1219                 return Status::newGood();
1220         }
1221 }
1222
1223 /**
1224  * Item class for a archive table row
1225  */
1226 class RevDel_ArchiveItem extends RevDel_RevisionItem {
1227         public function __construct( $list, $row ) {
1228                 RevDel_Item::__construct( $list, $row );
1229                 $this->revision = Revision::newFromArchiveRow( $row,
1230                         array( 'page' => $this->list->title->getArticleId() ) );
1231         }
1232
1233         public function getId() {
1234                 # Convert DB timestamp to MW timestamp
1235                 return $this->revision->getTimestamp();
1236         }
1237
1238         public function setBits( $bits ) {
1239                 $dbw = wfGetDB( DB_MASTER );
1240                 $dbw->update( 'archive',
1241                         array( 'ar_deleted' => $bits ),
1242                         array( 'ar_namespace' => $this->list->title->getNamespace(),
1243                                 'ar_title'     => $this->list->title->getDBkey(),
1244                                 // use timestamp for index
1245                                 'ar_timestamp' => $this->row->ar_timestamp,
1246                                 'ar_rev_id'    => $this->row->ar_rev_id,
1247                                 'ar_deleted' => $this->getBits()
1248                         ),
1249                         __METHOD__ );
1250                 return (bool)$dbw->affectedRows();
1251         }
1252
1253         protected function getRevisionLink() {
1254                 global $wgLang;
1255                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
1256                 $date = $wgLang->timeanddate( $this->revision->getTimestamp() );
1257                 if ( $this->isDeleted() && !$this->canView() ) {
1258                         return $date;
1259                 }
1260                 return $this->special->skin->link( $undelete, $date, array(),
1261                         array(
1262                                 'target' => $this->list->title->getPrefixedText(),
1263                                 'timestamp' => $this->revision->getTimestamp()
1264                         ) );
1265         }
1266
1267         protected function getDiffLink() {
1268                 if ( $this->isDeleted() && !$this->canView() ) {
1269                         return wfMsgHtml( 'diff' );
1270                 }
1271                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
1272                 return $this->special->skin->link( $undelete, wfMsgHtml('diff'), array(),
1273                         array(
1274                                 'target' => $this->list->title->getPrefixedText(),
1275                                 'diff' => 'prev',
1276                                 'timestamp' => $this->revision->getTimestamp()
1277                         ) );
1278         }
1279 }
1280
1281 /**
1282  * List for oldimage table items
1283  */
1284 class RevDel_FileList extends RevDel_List {
1285         var $type = 'oldimage';
1286         var $idField = 'oi_archive_name';
1287         var $dateField = 'oi_timestamp';
1288         var $storeBatch, $deleteBatch, $cleanupBatch;
1289
1290         public function doQuery( $db ) {
1291                 $archiveName = array();
1292                 foreach( $this->ids as $timestamp ) {
1293                         $archiveNames[] = $timestamp . '!' . $this->title->getDBkey();
1294                 }
1295                 return $db->select( 'oldimage', '*',
1296                         array(
1297                                 'oi_name'         => $this->title->getDBkey(),
1298                                 'oi_archive_name' => $archiveNames
1299                         ),
1300                         __METHOD__
1301                 );
1302         }
1303
1304         public function newItem( $row ) {
1305                 return new RevDel_FileItem( $this, $row );
1306         }
1307
1308         public function clearFileOps() {
1309                 $this->deleteBatch = array();
1310                 $this->storeBatch = array();
1311                 $this->cleanupBatch = array();
1312         }
1313
1314         public function doPreCommitUpdates() {
1315                 $status = Status::newGood();
1316                 $repo = RepoGroup::singleton()->getLocalRepo();
1317                 if ( $this->storeBatch ) {
1318                         $status->merge( $repo->storeBatch( $this->storeBatch, FileRepo::OVERWRITE_SAME ) );
1319                 }
1320                 if ( !$status->isOK() ) {
1321                         return $status;
1322                 }
1323                 if ( $this->deleteBatch ) {
1324                         $status->merge( $repo->deleteBatch( $this->deleteBatch ) );
1325                 }
1326                 if ( !$status->isOK() ) {
1327                         // Running cleanupDeletedBatch() after a failed storeBatch() with the DB already
1328                         // modified (but destined for rollback) causes data loss
1329                         return $status;
1330                 }
1331                 if ( $this->cleanupBatch ) {
1332                         $status->merge( $repo->cleanupDeletedBatch( $this->cleanupBatch ) );
1333                 }
1334                 return $status;
1335         }
1336
1337         public function doPostCommitUpdates() {
1338                 $file = wfLocalFile( $this->title );
1339                 $file->purgeCache();
1340                 $file->purgeDescription();
1341                 return Status::newGood();
1342         }
1343
1344         public function getSuppressBit() {
1345                 return File::DELETED_RESTRICTED;
1346         }
1347 }
1348
1349 /**
1350  * Item class for an oldimage table row
1351  */
1352 class RevDel_FileItem extends RevDel_Item {
1353         var $file;
1354
1355         public function __construct( $list, $row ) {
1356                 parent::__construct( $list, $row );
1357                 $this->file = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
1358         }
1359
1360         public function getId() {
1361                 $parts = explode( '!', $this->row->oi_archive_name );
1362                 return $parts[0];
1363         }
1364
1365         public function canView() {
1366                 return $this->file->userCan( File::DELETED_RESTRICTED );
1367         }
1368
1369         public function getBits() {
1370                 return $this->file->getVisibility();
1371         }
1372
1373         public function setBits( $bits ) {
1374                 # Queue the file op
1375                 # FIXME: move to LocalFile.php
1376                 if ( $this->isDeleted() ) {
1377                         if ( $bits & File::DELETED_FILE ) {
1378                                 # Still deleted
1379                         } else {
1380                                 # Newly undeleted
1381                                 $key = $this->file->getStorageKey();
1382                                 $srcRel = $this->file->repo->getDeletedHashPath( $key ) . $key;
1383                                 $this->list->storeBatch[] = array(
1384                                         $this->file->repo->getVirtualUrl( 'deleted' ) . '/' . $srcRel,
1385                                         'public',
1386                                         $this->file->getRel()
1387                                 );
1388                                 $this->list->cleanupBatch[] = $key;
1389                         }
1390                 } elseif ( $bits & File::DELETED_FILE ) {
1391                         # Newly deleted
1392                         $key = $this->file->getStorageKey();
1393                         $dstRel = $this->file->repo->getDeletedHashPath( $key ) . $key;
1394                         $this->list->deleteBatch[] = array( $this->file->getRel(), $dstRel );
1395                 }
1396
1397                 # Do the database operations
1398                 $dbw = wfGetDB( DB_MASTER );
1399                 $dbw->update( 'oldimage',
1400                         array( 'oi_deleted' => $bits ),
1401                         array(
1402                                 'oi_name' => $this->row->oi_name,
1403                                 'oi_timestamp' => $this->row->oi_timestamp,
1404                                 'oi_deleted' => $this->getBits()
1405                         ),
1406                         __METHOD__
1407                 );
1408                 return (bool)$dbw->affectedRows();
1409         }
1410
1411         public function isDeleted() {
1412                 return $this->file->isDeleted( File::DELETED_FILE );
1413         }
1414
1415         /**
1416          * Get the link to the file.
1417          * Overridden by RevDel_ArchivedFileItem.
1418          */
1419         protected function getLink() {
1420                 global $wgLang;
1421                 $date = $wgLang->timeanddate( $this->file->getTimestamp(), true  );
1422                 if ( $this->isDeleted() ) {
1423                         # Hidden files...
1424                         if ( !$this->canView() ) {
1425                                 $link = $date;
1426                         } else {
1427                                 $link = $this->special->skin->link(
1428                                         $this->special->getTitle(),
1429                                         $date, array(),
1430                                         array(
1431                                                 'target' => $this->list->title->getPrefixedText(),
1432                                                 'file' => $this->file->sha1 . '.' . $this->file->getExtension()
1433                                         )
1434                                 );
1435                         }
1436                         return '<span class="history-deleted">' . $link . '</span>';
1437                 } else {
1438                         # Regular files...
1439                         $url = $this->file->getUrl();
1440                         return Xml::element( 'a', array( 'href' => $this->file->getUrl() ), $date );
1441                 }
1442         }
1443         /**
1444          * Generate a user tool link cluster if the current user is allowed to view it
1445          * @return string HTML
1446          */
1447         protected function getUserTools() {
1448                 if( $this->file->userCan( Revision::DELETED_USER ) ) {
1449                         $link = $this->special->skin->userLink( $this->file->user, $this->file->user_text ) .
1450                                 $this->special->skin->userToolLinks( $this->file->user, $this->file->user_text );
1451                 } else {
1452                         $link = wfMsgHtml( 'rev-deleted-user' );
1453                 }
1454                 if( $this->file->isDeleted( Revision::DELETED_USER ) ) {
1455                         return '<span class="history-deleted">' . $link . '</span>';
1456                 }
1457                 return $link;
1458         }
1459
1460         /**
1461          * Wrap and format the file's comment block, if the current
1462          * user is allowed to view it.
1463          *
1464          * @return string HTML
1465          */
1466         protected function getComment() {
1467                 if( $this->file->userCan( File::DELETED_COMMENT ) ) {
1468                         $block = $this->special->skin->commentBlock( $this->file->description );
1469                 } else {
1470                         $block = ' ' . wfMsgHtml( 'rev-deleted-comment' );
1471                 }
1472                 if( $this->file->isDeleted( File::DELETED_COMMENT ) ) {
1473                         return "<span class=\"history-deleted\">$block</span>";
1474                 }
1475                 return $block;
1476         }
1477
1478         public function getHTML() {
1479                 global $wgLang;
1480                 $data =
1481                         wfMsg(
1482                                 'widthheight',
1483                                 $wgLang->formatNum( $this->file->getWidth() ),
1484                                 $wgLang->formatNum( $this->file->getHeight() )
1485                         ) .
1486                         ' (' .
1487                         wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $this->file->getSize() ) ) .
1488                         ')';
1489                 $pageLink = $this->getLink();
1490
1491                 return '<li>' . $this->getLink() . ' ' . $this->getUserTools() . ' ' .
1492                         $data . ' ' . $this->getComment(). '</li>';
1493         }
1494 }
1495
1496 /**
1497  * List for filearchive table items
1498  */
1499 class RevDel_ArchivedFileList extends RevDel_FileList {
1500         var $type = 'filearchive';
1501         var $idField = 'fa_id';
1502         var $dateField = 'fa_timestamp';
1503
1504         public function doQuery( $db ) {
1505                 $ids = array_map( 'intval', $this->ids );
1506                 return $db->select( 'filearchive', '*',
1507                         array(
1508                                 'fa_name' => $this->title->getDBkey(),
1509                                 'fa_id'   => $ids
1510                         ),
1511                         __METHOD__
1512                 );
1513         }
1514
1515         public function newItem( $row ) {
1516                 return new RevDel_ArchivedFileItem( $this, $row );
1517         }
1518 }
1519
1520 /**
1521  * Item class for a filearchive table row
1522  */
1523 class RevDel_ArchivedFileItem extends RevDel_FileItem {
1524         public function __construct( $list, $row ) {
1525                 RevDel_Item::__construct( $list, $row );
1526                 $this->file = ArchivedFile::newFromRow( $row );
1527         }
1528
1529         public function getId() {
1530                 return $this->row->fa_id;
1531         }
1532
1533         public function setBits( $bits ) {
1534                 $dbw = wfGetDB( DB_MASTER );
1535                 $dbw->update( 'filearchive',
1536                         array( 'fa_deleted' => $bits ),
1537                         array(
1538                                 'fa_id' => $this->row->fa_id,
1539                                 'fa_deleted' => $this->getBits(),
1540                         ),
1541                         __METHOD__
1542                 );
1543                 return (bool)$dbw->affectedRows();
1544         }
1545
1546         protected function getLink() {
1547                 global $wgLang, $wgUser;
1548                 $date = $wgLang->timeanddate( $this->file->getTimestamp(), true  );
1549                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
1550                 $key = $this->file->getKey();
1551                 return $this->special->skin->link( $undelete, $date, array(),
1552                         array(
1553                                 'target' => $this->list->title->getPrefixedText(),
1554                                 'file' => $key,
1555                                 'token' => $wgUser->editToken( $key )
1556                         )
1557                 );
1558         }
1559 }
1560
1561 /**
1562  * List for logging table items
1563  */
1564 class RevDel_LogList extends RevDel_List {
1565         var $type = 'logging';
1566         var $idField = 'log_id';
1567         var $dateField = 'log_timestamp';
1568
1569         public function doQuery( $db ) {
1570                 global $wgMessageCache;
1571                 $wgMessageCache->loadAllMessages();
1572                 $ids = array_map( 'intval', $this->ids );
1573                 return $db->select( 'logging', '*',
1574                         array( 'log_id' => $ids ),
1575                         __METHOD__
1576                 );
1577         }
1578
1579         public function newItem( $row ) {
1580                 return new RevDel_LogItem( $this, $row );
1581         }
1582
1583         public function getSuppressBit() {
1584                 return Revision::DELETED_RESTRICTED;
1585         }
1586
1587         public function getLogAction() {
1588                 return 'event';
1589         }
1590
1591         public function getLogParams( $params ) {
1592                 return array(
1593                         implode( ',', $params['ids'] ),
1594                         "ofield={$params['oldBits']}",
1595                         "nfield={$params['newBits']}"
1596                 );
1597         }
1598 }
1599
1600 /**
1601  * Item class for a logging table row
1602  */
1603 class RevDel_LogItem extends RevDel_Item {
1604         public function canView() {
1605                 return LogEventsList::userCan( $this->row, Revision::DELETED_RESTRICTED );
1606         }
1607
1608         public function getBits() {
1609                 return $this->row->log_deleted;
1610         }
1611
1612         public function setBits( $bits ) {
1613                 $dbw = wfGetDB( DB_MASTER );
1614                 $dbw->update( 'recentchanges',
1615                         array(
1616                                 'rc_deleted' => $bits,
1617                                 'rc_patrolled' => 1
1618                         ),
1619                         array(
1620                                 'rc_logid' => $this->row->log_id,
1621                                 'rc_timestamp' => $this->row->log_timestamp
1622                         ),
1623                         __METHOD__
1624                 );
1625                 $dbw->update( 'logging',
1626                         array( 'log_deleted' => $bits ),
1627                         array(
1628                                 'log_id' => $this->row->log_id,
1629                                 'log_deleted' => $this->getBits()
1630                         ),
1631                         __METHOD__
1632                 );
1633                 return (bool)$dbw->affectedRows();
1634         }
1635
1636         public function getHTML() {
1637                 global $wgLang;
1638
1639                 $date = htmlspecialchars( $wgLang->timeanddate( $this->row->log_timestamp ) );
1640                 $paramArray = LogPage::extractParams( $this->row->log_params );
1641                 $title = Title::makeTitle( $this->row->log_namespace, $this->row->log_title );
1642
1643                 $logtitle = SpecialPage::getTitleFor( 'Log' );
1644                 $loglink = $this->special->skin->link(
1645                         $logtitle,
1646                         wfMsgHtml( 'log' ),
1647                         array(),
1648                         array( 'page' => $title->getPrefixedText() )
1649                 );
1650                 // Action text
1651                 if( !$this->canView() ) {
1652                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
1653                 } else {
1654                         $action = LogPage::actionText( $this->row->log_type, $this->row->log_action, $title,
1655                                 $this->special->skin, $paramArray, true, true );
1656                         if( $this->row->log_deleted & LogPage::DELETED_ACTION )
1657                                 $action = '<span class="history-deleted">' . $action . '</span>';
1658                 }
1659                 // User links
1660                 $userLink = $this->special->skin->userLink( $this->row->log_user,
1661                         User::WhoIs( $this->row->log_user ) );
1662                 if( LogEventsList::isDeleted($this->row,LogPage::DELETED_USER) ) {
1663                         $userLink = '<span class="history-deleted">' . $userLink . '</span>';
1664                 }
1665                 // Comment
1666                 $comment = $wgLang->getDirMark() . $this->special->skin->commentBlock( $this->row->log_comment );
1667                 if( LogEventsList::isDeleted($this->row,LogPage::DELETED_COMMENT) ) {
1668                         $comment = '<span class="history-deleted">' . $comment . '</span>';
1669                 }
1670                 return "<li>($loglink) $date $userLink $action $comment</li>";
1671         }
1672 }