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
  12         public function __construct() {
  13                 parent::__construct( 'Revisiondelete', 'deleterevision' );
  14                 $this->includable( false );
  15         }
  16
  17         public function execute( $par ) {
  18                 global $wgOut, $wgUser, $wgRequest;
  19                 if( wfReadOnly() ) {
  20                         $wgOut->readOnlyPage();
  21                         return;
  22                 }
  23                 if( !$wgUser->isAllowed( 'deleterevision' ) ) {
  24                         $wgOut->permissionRequired( 'deleterevision' );
  25                         return;
  26                 }
  27                 $this->skin =& $wgUser->getSkin();
  28                 # Set title and such
  29                 $this->setHeaders();
  30                 $this->outputHeader();
  31                 $this->wasPosted = $wgRequest->wasPosted();
  32                 # Handle our many different possible input types
  33                 $this->target = $wgRequest->getText( 'target' );
  34                 $this->oldids = $wgRequest->getArray( 'oldid' );
  35                 $this->artimestamps = $wgRequest->getArray( 'artimestamp' );
  36                 $this->logids = $wgRequest->getArray( 'logid' );
  37                 $this->oldimgs = $wgRequest->getArray( 'oldimage' );
  38                 $this->fileids = $wgRequest->getArray( 'fileid' );
  39                 # For reviewing deleted files...
  40                 $this->file = $wgRequest->getVal( 'file' );
  41                 # Only one target set at a time please!
  42                 $i = (bool)$this->file + (bool)$this->oldids + (bool)$this->logids
  43                         + (bool)$this->artimestamps + (bool)$this->fileids + (bool)$this->oldimgs;
  44                 # No targets?
  45                 if( $i == 0 ) {
  46                         $wgOut->showErrorPage( 'notargettitle', 'notargettext' );
  47                         return;
  48                 }
  49                 # Too many targets?
  50                 if( $i !== 1 ) {
  51                         $wgOut->showErrorPage( 'revdelete-toomanytargets-title', 'revdelete-toomanytargets-text' );
  52                         return;
  53                 }
  54                 $this->page = Title::newFromUrl( $this->target );
  55                 # If we have revisions, get the title from the first one
  56                 # since they should all be from the same page. This allows
  57                 # for more flexibility with page moves...
  58                 if( count($this->oldids) > 0 ) {
  59                         $rev = Revision::newFromId( $this->oldids[0] );
  60                         $this->page = $rev ? $rev->getTitle() : $this->page;
  61                 }
  62                 # We need a target page!
  63                 if( is_null($this->page) ) {
  64                         $wgOut->addWikiMsg( 'undelete-header' );
  65                         return;
  66                 }
  67                 # Logs must have a type given
  68                 if( $this->logids && !strpos($this->page->getDBKey(),'/') ) {
  69                         $wgOut->showErrorPage( 'revdelete-nologtype-title', 'revdelete-nologtype-text' );
  70                         return;
  71                 }
  72                 # For reviewing deleted files...show it now if allowed
  73                 if( $this->file ) {
  74                         $oimage = RepoGroup::singleton()->getLocalRepo()->newFromArchiveName( $this->page, $this->file );
  75                         $oimage->load();
  76                         // Check if user is allowed to see this file
  77                         if( !$oimage->userCan(File::DELETED_FILE) ) {
  78                                 $wgOut->permissionRequired( 'suppressrevision' );
  79                         } else {
  80                                 $this->showFile( $this->file );
  81                         }
  82                         return;
  83                 }
  84                 # Give a link to the logs/hist for this page
  85                 if( !is_null($this->page) && $this->page->getNamespace() > -1 ) {
  86                         $links = array();
  87
  88                         $logtitle = SpecialPage::getTitleFor( 'Log' );
  89                         $links[] = $this->skin->makeKnownLinkObj( $logtitle, wfMsgHtml( 'viewpagelogs' ),
  90                                 wfArrayToCGI( array( 'page' => $this->page->getPrefixedUrl() ) ) );
  91                         # Give a link to the page history
  92                         $links[] = $this->skin->makeKnownLinkObj( $this->page, wfMsgHtml( 'pagehist' ),
  93                                 wfArrayToCGI( array( 'action' => 'history' ) ) );
  94                         # Link to deleted edits
  95                         if( $wgUser->isAllowed('undelete') ) {
  96                                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
  97                                 $links[] = $this->skin->makeKnownLinkObj( $undelete, wfMsgHtml( 'deletedhist' ),
  98                                         wfArrayToCGI( array( 'target' => $this->page->getPrefixedDBkey() ) ) );
  99                         }
 100                         # Logs themselves don't have histories or archived revisions
 101                         $wgOut->setSubtitle( '<p>'.implode($links,' / ').'</p>' );
 102                 }
 103                 # Lock the operation and the form context
 104                 $this->secureOperation();
 105                 # Either submit or create our form
 106                 if( $this->wasPosted ) {
 107                         $this->submit( $wgRequest );
 108                 } else if( $this->deleteKey == 'oldid' || $this->deleteKey == 'artimestamp' ) {
 109                         $this->showRevs();
 110                 } else if( $this->deleteKey == 'fileid' || $this->deleteKey == 'oldimage' ) {
 111                         $this->showImages();
 112                 } else if( $this->deleteKey == 'logid' ) {
 113                         $this->showLogItems();
 114                 }
 115                 # Show relevant lines from the deletion log. This will show even if said ID
 116                 # does not exist...might be helpful
 117                 $wgOut->addHTML( "<h2>" . htmlspecialchars( LogPage::logName( 'delete' ) ) . "</h2>\n" );
 118                 LogEventsList::showLogExtract( $wgOut, 'delete', $this->page->getPrefixedText() );
 119                 if( $wgUser->isAllowed( 'suppressionlog' ) ){
 120                         $wgOut->addHTML( "<h2>" . htmlspecialchars( LogPage::logName( 'suppress' ) ) . "</h2>\n" );
 121                         LogEventsList::showLogExtract( $wgOut, 'suppress', $this->page->getPrefixedText() );
 122                 }
 123         }
 124
 125         private function secureOperation() {
 126                 global $wgUser;
 127                 $this->deleteKey = '';
 128                 // At this point, we should only have one of these
 129                 if( $this->oldids ) {
 130                         $this->revisions = $this->oldids;
 131                         $hide_content_name = array( 'revdelete-hide-text', 'wpHideText', Revision::DELETED_TEXT );
 132                         $this->deleteKey = 'oldid';
 133                 } else if( $this->artimestamps ) {
 134                         $this->archrevs = $this->artimestamps;
 135                         $hide_content_name = array( 'revdelete-hide-text', 'wpHideText', Revision::DELETED_TEXT );
 136                         $this->deleteKey = 'artimestamp';
 137                 } else if( $this->oldimgs ) {
 138                         $this->ofiles = $this->oldimgs;
 139                         $hide_content_name = array( 'revdelete-hide-image', 'wpHideImage', File::DELETED_FILE );
 140                         $this->deleteKey = 'oldimage';
 141                 } else if( $this->fileids ) {
 142                         $this->afiles = $this->fileids;
 143                         $hide_content_name = array( 'revdelete-hide-image', 'wpHideImage', File::DELETED_FILE );
 144                         $this->deleteKey = 'fileid';
 145                 } else if( $this->logids ) {
 146                         $this->events = $this->logids;
 147                         $hide_content_name = array( 'revdelete-hide-name', 'wpHideName', LogPage::DELETED_ACTION );
 148                         $this->deleteKey = 'logid';
 149                 }
 150                 // Our checkbox messages depends one what we are doing,
 151                 // e.g. we don't hide "text" for logs or images
 152                 $this->checks = array(
 153                         $hide_content_name,
 154                         array( 'revdelete-hide-comment', 'wpHideComment', Revision::DELETED_COMMENT ),
 155                         array( 'revdelete-hide-user', 'wpHideUser', Revision::DELETED_USER )
 156                 );
 157                 if( $wgUser->isAllowed('suppressrevision') ) {
 158                         $this->checks[] = array( 'revdelete-hide-restricted', 'wpHideRestricted', Revision::DELETED_RESTRICTED );
 159                 }
 160         }
 161
 162         /**
 163          * Show a deleted file version requested by the visitor.
 164          */
 165         private function showFile( $key ) {
 166                 global $wgOut, $wgRequest;
 167                 $wgOut->disable();
 168
 169                 # We mustn't allow the output to be Squid cached, otherwise
 170                 # if an admin previews a deleted image, and it's cached, then
 171                 # a user without appropriate permissions can toddle off and
 172                 # nab the image, and Squid will serve it
 173                 $wgRequest->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
 174                 $wgRequest->response()->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
 175                 $wgRequest->response()->header( 'Pragma: no-cache' );
 176
 177                 $store = FileStore::get( 'deleted' );
 178                 $store->stream( $key );
 179         }
 180
 181         /**
 182          * This lets a user set restrictions for live and archived revisions
 183          */
 184         private function showRevs() {
 185                 global $wgOut, $wgUser;
 186                 $UserAllowed = true;
 187
 188                 $count = ($this->deleteKey=='oldid') ?
 189                         count($this->revisions) : count($this->archrevs);
 190                 $wgOut->addWikiMsg( 'revdelete-selected', $this->page->getPrefixedText(), $count );
 191
 192                 $bitfields = 0;
 193                 $wgOut->addHTML( "<ul>" );
 194
 195                 $where = $revObjs = array();
 196                 $dbr = wfGetDB( DB_MASTER );
 197
 198                 $revisions = 0;
 199                 // Live revisions...
 200                 if( $this->deleteKey=='oldid' ) {
 201                         // Run through and pull all our data in one query
 202                         foreach( $this->revisions as $revid ) {
 203                                 $where[] = intval($revid);
 204                         }
 205                         $result = $dbr->select( array('revision','page'), '*',
 206                                 array(
 207                                         'rev_page' => $this->page->getArticleID(),
 208                                         'rev_id' => $where,
 209                                         'rev_page = page_id' ),
 210                                 __METHOD__ );
 211                         while( $row = $dbr->fetchObject( $result ) ) {
 212                                 $revObjs[$row->rev_id] = new Revision( $row );
 213                         }
 214                         foreach( $this->revisions as $revid ) {
 215                                 // Hiding top revisison is bad
 216                                 if( !isset($revObjs[$revid]) || $revObjs[$revid]->isCurrent() ) {
 217                                         continue;
 218                                 } else if( !$revObjs[$revid]->userCan(Revision::DELETED_RESTRICTED) ) {
 219                                 // If a rev is hidden from sysops
 220                                         if( !$this->wasPosted ) {
 221                                                 $wgOut->permissionRequired( 'suppressrevision' );
 222                                                 return;
 223                                         }
 224                                         $UserAllowed = false;
 225                                 }
 226                                 $revisions++;
 227                                 $wgOut->addHTML( $this->historyLine( $revObjs[$revid] ) );
 228                                 $bitfields |= $revObjs[$revid]->mDeleted;
 229                         }
 230                 // The archives...
 231                 } else {
 232                         // Run through and pull all our data in one query
 233                         foreach( $this->archrevs as $timestamp ) {
 234                                 $where[] = $dbr->timestamp( $timestamp );
 235                         }
 236                         $result = $dbr->select( 'archive', '*',
 237                                 array(
 238                                         'ar_namespace' => $this->page->getNamespace(),
 239                                         'ar_title' => $this->page->getDBKey(),
 240                                         'ar_timestamp' => $where ),
 241                                 __METHOD__ );
 242                         while( $row = $dbr->fetchObject( $result ) ) {
 243                                 $timestamp = wfTimestamp( TS_MW, $row->ar_timestamp );
 244                                 $revObjs[$timestamp] = new Revision( array(
 245                                         'page'       => $this->page->getArticleId(),
 246                                         'id'         => $row->ar_rev_id,
 247                                         'text'       => $row->ar_text_id,
 248                                         'comment'    => $row->ar_comment,
 249                                         'user'       => $row->ar_user,
 250                                         'user_text'  => $row->ar_user_text,
 251                                         'timestamp'  => $timestamp,
 252                                         'minor_edit' => $row->ar_minor_edit,
 253                                         'text_id'    => $row->ar_text_id,
 254                                         'deleted'    => $row->ar_deleted,
 255                                         'len'        => $row->ar_len) );
 256                         }
 257                         foreach( $this->archrevs as $timestamp ) {
 258                                 if( !isset($revObjs[$timestamp]) ) {
 259                                         continue;
 260                                 } else if( !$revObjs[$timestamp]->userCan(Revision::DELETED_RESTRICTED) ) {
 261                                 // If a rev is hidden from sysops
 262                                         if( !$this->wasPosted ) {
 263                                                 $wgOut->permissionRequired( 'suppressrevision' );
 264                                                 return;
 265                                         }
 266                                         $UserAllowed = false;
 267                                 }
 268                                 $revisions++;
 269                                 $wgOut->addHTML( $this->historyLine( $revObjs[$timestamp] ) );
 270                                 $bitfields |= $revObjs[$timestamp]->mDeleted;
 271                         }
 272                 }
 273                 if( !$revisions ) {
 274                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 275                         return;
 276                 }
 277
 278                 $wgOut->addHTML( "</ul>" );
 279                 // Explanation text
 280                 $this->addUsageText();
 281
 282                 // Normal sysops can always see what they did, but can't always change it
 283                 if( !$UserAllowed ) return;
 284
 285                 $items = array(
 286                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 287                         Xml::submitButton( wfMsg( 'revdelete-submit' ) )
 288                 );
 289                 $hidden = array(
 290                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 291                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 292                         Xml::hidden( 'type', $this->deleteKey )
 293                 );
 294                 if( $this->deleteKey=='oldid' ) {
 295                         foreach( $revObjs as $rev )
 296                                 $hidden[] = Xml::hidden( 'oldid[]', $rev->getId() );
 297                 } else {
 298                         foreach( $revObjs as $rev )
 299                                 $hidden[] = Xml::hidden( 'artimestamp[]', $rev->getTimestamp() );
 300                 }
 301                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
 302                 $wgOut->addHTML(
 303                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $special->getLocalUrl( 'action=submit' ),
 304                                 'id' => 'mw-revdel-form-revisions' ) ) .
 305                         Xml::openElement( 'fieldset' ) .
 306                         xml::element( 'legend', null,  wfMsg( 'revdelete-legend' ) )
 307                 );
 308
 309                 $wgOut->addHTML( $this->buildCheckBoxes( $bitfields ) );
 310                 foreach( $items as $item ) {
 311                         $wgOut->addHTML( Xml::tags( 'p', null, $item ) );
 312                 }
 313                 foreach( $hidden as $item ) {
 314                         $wgOut->addHTML( $item );
 315                 }
 316                 $wgOut->addHTML(
 317                         Xml::closeElement( 'fieldset' ) .
 318                         Xml::closeElement( 'form' ) . "\n"
 319                 );
 320         }
 321
 322         /**
 323          * This lets a user set restrictions for archived images
 324          */
 325         private function showImages() {
 326                 global $wgOut, $wgUser, $wgLang;
 327                 $UserAllowed = true;
 328
 329                 $count = ($this->deleteKey=='oldimage') ? count($this->ofiles) : count($this->afiles);
 330                 $wgOut->addWikiMsg( 'revdelete-selected', $this->page->getPrefixedText(),
 331                         $wgLang->formatNum($count) );
 332
 333                 $bitfields = 0;
 334                 $wgOut->addHTML( "<ul>" );
 335
 336                 $where = $filesObjs = array();
 337                 $dbr = wfGetDB( DB_MASTER );
 338                 // Live old revisions...
 339                 $revisions = 0;
 340                 if( $this->deleteKey=='oldimage' ) {
 341                         // Run through and pull all our data in one query
 342                         foreach( $this->ofiles as $timestamp ) {
 343                                 $where[] = $timestamp.'!'.$this->page->getDBKey();
 344                         }
 345                         $result = $dbr->select( 'oldimage', '*',
 346                                 array(
 347                                         'oi_name' => $this->page->getDBKey(),
 348                                         'oi_archive_name' => $where ),
 349                                 __METHOD__ );
 350                         while( $row = $dbr->fetchObject( $result ) ) {
 351                                 $filesObjs[$row->oi_archive_name] = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
 352                                 $filesObjs[$row->oi_archive_name]->user = $row->oi_user;
 353                                 $filesObjs[$row->oi_archive_name]->user_text = $row->oi_user_text;
 354                         }
 355                         // Check through our images
 356                         foreach( $this->ofiles as $timestamp ) {
 357                                 $archivename = $timestamp.'!'.$this->page->getDBKey();
 358                                 if( !isset($filesObjs[$archivename]) ) {
 359                                         continue;
 360                                 } else if( !$filesObjs[$archivename]->userCan(File::DELETED_RESTRICTED) ) {
 361                                         // If a rev is hidden from sysops
 362                                         if( !$this->wasPosted ) {
 363                                                 $wgOut->permissionRequired( 'suppressrevision' );
 364                                                 return;
 365                                         }
 366                                         $UserAllowed = false;
 367                                 }
 368                                 $revisions++;
 369                                 // Inject history info
 370                                 $wgOut->addHTML( $this->fileLine( $filesObjs[$archivename] ) );
 371                                 $bitfields |= $filesObjs[$archivename]->deleted;
 372                         }
 373                 // Archived files...
 374                 } else {
 375                         // Run through and pull all our data in one query
 376                         foreach( $this->afiles as $id ) {
 377                                 $where[] = intval($id);
 378                         }
 379                         $result = $dbr->select( 'filearchive', '*',
 380                                 array(
 381                                         'fa_name' => $this->page->getDBKey(),
 382                                         'fa_id' => $where ),
 383                                 __METHOD__ );
 384                         while( $row = $dbr->fetchObject( $result ) ) {
 385                                 $filesObjs[$row->fa_id] = ArchivedFile::newFromRow( $row );
 386                         }
 387
 388                         foreach( $this->afiles as $fileid ) {
 389                                 if( !isset($filesObjs[$fileid]) ) {
 390                                         continue;
 391                                 } else if( !$filesObjs[$fileid]->userCan(File::DELETED_RESTRICTED) ) {
 392                                         // If a rev is hidden from sysops
 393                                         if( !$this->wasPosted ) {
 394                                                 $wgOut->permissionRequired( 'suppressrevision' );
 395                                                 return;
 396                                         }
 397                                         $UserAllowed = false;
 398                                 }
 399                                 $revisions++;
 400                                 // Inject history info
 401                                 $wgOut->addHTML( $this->archivedfileLine( $filesObjs[$fileid] ) );
 402                                 $bitfields |= $filesObjs[$fileid]->deleted;
 403                         }
 404                 }
 405                 if( !$revisions ) {
 406                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 407                         return;
 408                 }
 409
 410                 $wgOut->addHTML( "</ul>" );
 411                 // Explanation text
 412                 $this->addUsageText();
 413                 // Normal sysops can always see what they did, but can't always change it
 414                 if( !$UserAllowed ) return;
 415
 416                 $items = array(
 417                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 418                         Xml::submitButton( wfMsg( 'revdelete-submit' ) )
 419                 );
 420                 $hidden = array(
 421                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 422                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 423                         Xml::hidden( 'type', $this->deleteKey )
 424                 );
 425                 if( $this->deleteKey=='oldimage' ) {
 426                         foreach( $this->ofiles as $filename )
 427                                 $hidden[] = Xml::hidden( 'oldimage[]', $filename );
 428                 } else {
 429                         foreach( $this->afiles as $fileid )
 430                                 $hidden[] = Xml::hidden( 'fileid[]', $fileid );
 431                 }
 432                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
 433                 $wgOut->addHTML(
 434                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $special->getLocalUrl( 'action=submit' ),
 435                                 'id' => 'mw-revdel-form-filerevisions' ) ) .
 436                         Xml::fieldset( wfMsg( 'revdelete-legend' ) )
 437                 );
 438
 439                 $wgOut->addHTML( $this->buildCheckBoxes( $bitfields ) );
 440                 foreach( $items as $item ) {
 441                         $wgOut->addHTML( "<p>$item</p>" );
 442                 }
 443                 foreach( $hidden as $item ) {
 444                         $wgOut->addHTML( $item );
 445                 }
 446
 447                 $wgOut->addHTML(
 448                         Xml::closeElement( 'fieldset' ) .
 449                         Xml::closeElement( 'form' ) . "\n"
 450                 );
 451         }
 452
 453         /**
 454          * This lets a user set restrictions for log items
 455          */
 456         private function showLogItems() {
 457                 global $wgOut, $wgUser, $wgMessageCache, $wgLang;
 458                 $UserAllowed = true;
 459
 460                 $wgOut->addWikiMsg( 'logdelete-selected', $wgLang->formatNum( count($this->events) ) );
 461
 462                 $bitfields = 0;
 463                 $wgOut->addHTML( "<ul>" );
 464
 465                 $where = $logRows = array();
 466                 $dbr = wfGetDB( DB_MASTER );
 467                 // Run through and pull all our data in one query
 468                 $logItems = 0;
 469                 foreach( $this->events as $logid ) {
 470                         $where[] = intval($logid);
 471                 }
 472                 list($log,$logtype) = explode( '/',$this->page->getDBKey(), 2 );
 473                 $result = $dbr->select( 'logging', '*',
 474                         array(
 475                                 'log_type' => $logtype,
 476                                 'log_id' => $where ),
 477                         __METHOD__ );
 478                 while( $row = $dbr->fetchObject( $result ) ) {
 479                         $logRows[$row->log_id] = $row;
 480                 }
 481                 $wgMessageCache->loadAllMessages();
 482                 foreach( $this->events as $logid ) {
 483                         // Don't hide from oversight log!!!
 484                         if( !isset( $logRows[$logid] ) || $logRows[$logid]->log_type=='suppress' ) {
 485                                 continue;
 486                         } else if( !LogEventsList::userCan( $logRows[$logid],Revision::DELETED_RESTRICTED) ) {
 487                         // If an event is hidden from sysops
 488                                 if( !$this->wasPosted ) {
 489                                         $wgOut->permissionRequired( 'suppressrevision' );
 490                                         return;
 491                                 }
 492                                 $UserAllowed = false;
 493                         }
 494                         $logItems++;
 495                         $wgOut->addHTML( $this->logLine( $logRows[$logid] ) );
 496                         $bitfields |= $logRows[$logid]->log_deleted;
 497                 }
 498                 if( !$logItems ) {
 499                         $wgOut->showErrorPage( 'revdelete-nologid-title', 'revdelete-nologid-text' );
 500                         return;
 501                 }
 502
 503                 $wgOut->addHTML( "</ul>" );
 504                 // Explanation text
 505                 $this->addUsageText();
 506                 // Normal sysops can always see what they did, but can't always change it
 507                 if( !$UserAllowed ) return;
 508
 509                 $items = array(
 510                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 511                         Xml::submitButton( wfMsg( 'revdelete-submit' ) ) );
 512                 $hidden = array(
 513                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 514                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 515                         Xml::hidden( 'type', $this->deleteKey ) );
 516                 foreach( $this->events as $logid ) {
 517                         $hidden[] = Xml::hidden( 'logid[]', $logid );
 518                 }
 519
 520                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
 521                 $wgOut->addHTML(
 522                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $special->getLocalUrl( 'action=submit' ),
 523                                 'id' => 'mw-revdel-form-logs' ) ) .
 524                         Xml::fieldset( wfMsg( 'revdelete-legend' ) )
 525                 );
 526
 527                 $wgOut->addHTML( $this->buildCheckBoxes( $bitfields ) );
 528                 foreach( $items as $item ) {
 529                         $wgOut->addHTML( "<p>$item</p>" );
 530                 }
 531                 foreach( $hidden as $item ) {
 532                         $wgOut->addHTML( $item );
 533                 }
 534
 535                 $wgOut->addHTML(
 536                         Xml::closeElement( 'fieldset' ) .
 537                         Xml::closeElement( 'form' ) . "\n"
 538                 );
 539         }
 540
 541         private function addUsageText() {
 542                 global $wgOut, $wgUser;
 543                 $wgOut->addWikiMsg( 'revdelete-text' );
 544                 if( $wgUser->isAllowed( 'suppressrevision' ) ) {
 545                         $wgOut->addWikiMsg( 'revdelete-suppress-text' );
 546                 }
 547         }
 548
 549         /**
 550         * @param int $bitfields, aggregate bitfield of all the bitfields
 551         * @returns string HTML
 552         */
 553         private function buildCheckBoxes( $bitfields ) {
 554                 $html = '';
 555                 // FIXME: all items checked for just one rev are checked, even if not set for the others
 556                 foreach( $this->checks as $item ) {
 557                         list( $message, $name, $field ) = $item;
 558                         $line = Xml::tags( 'div', null, Xml::checkLabel( wfMsg($message), $name, $name,
 559                                 $bitfields & $field ) );
 560                         if( $field == Revision::DELETED_RESTRICTED ) $line = "<b>$line</b>";
 561                         $html .= $line;
 562                 }
 563                 return $html;
 564         }
 565
 566         /**
 567          * @param Revision $rev
 568          * @returns string
 569          */
 570         private function historyLine( $rev ) {
 571                 global $wgLang, $wgUser;
 572
 573                 $date = $wgLang->timeanddate( $rev->getTimestamp() );
 574                 $difflink = $del = '';
 575                 // Live revisions
 576                 if( $this->deleteKey=='oldid' ) {
 577                         $tokenParams = '&unhide=1&token='.urlencode( $wgUser->editToken( $rev->getId() ) );
 578                         $revlink = $this->skin->makeLinkObj( $this->page, $date, 'oldid='.$rev->getId() . $tokenParams );
 579                         $difflink = '(' . $this->skin->makeKnownLinkObj( $this->page, wfMsgHtml('diff'),
 580                                 'diff=' . $rev->getId() . '&oldid=prev' . $tokenParams ) . ')';
 581                 // Archived revisions
 582                 } else {
 583                         $undelete = SpecialPage::getTitleFor( 'Undelete' );
 584                         $target = $this->page->getPrefixedText();
 585                         $revlink = $this->skin->makeLinkObj( $undelete, $date,
 586                                 "target=$target&timestamp=" . $rev->getTimestamp() );
 587                         $difflink = '(' . $this->skin->makeKnownLinkObj( $undelete, wfMsgHtml('diff'),
 588                                 "target=$target&diff=prev&timestamp=" . $rev->getTimestamp() ) . ')';
 589                 }
 590                 // Check permissions; items may be "suppressed"
 591                 if( $rev->isDeleted(Revision::DELETED_TEXT) ) {
 592                         $revlink = '<span class="history-deleted">'.$revlink.'</span>';
 593                         $del = ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 594                         if( !$rev->userCan(Revision::DELETED_TEXT) ) {
 595                                 $revlink = '<span class="history-deleted">'.$date.'</span>';
 596                                 $difflink = '(' . wfMsgHtml('diff') . ')';
 597                         }
 598                 }
 599                 $userlink = $this->skin->revUserLink( $rev );
 600                 $comment = $this->skin->revComment( $rev );
 601
 602                 return "<li>$difflink $revlink $userlink $comment{$del}</li>";
 603         }
 604
 605         /**
 606          * @param File $file
 607          * @returns string
 608          */
 609         private function fileLine( $file ) {
 610                 global $wgLang, $wgTitle;
 611
 612                 $target = $this->page->getPrefixedText();
 613                 $date = $wgLang->timeanddate( $file->getTimestamp(), true  );
 614
 615                 $del = '';
 616                 # Hidden files...
 617                 if( $file->isDeleted(File::DELETED_FILE) ) {
 618                         $del = ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 619                         if( !$file->userCan(File::DELETED_FILE) ) {
 620                                 $pageLink = $date;
 621                         } else {
 622                                 $pageLink = $this->skin->makeKnownLinkObj( $wgTitle, $date,
 623                                         "target=$target&file=$file->sha1.".$file->getExtension() );
 624                         }
 625                         $pageLink = '<span class="history-deleted">' . $pageLink . '</span>';
 626                 # Regular files...
 627                 } else {
 628                         $url = $file->getUrlRel();
 629                         $pageLink = "<a href=\"{$url}\">{$date}</a>";
 630                 }
 631
 632                 $data = wfMsg( 'widthheight',
 633                                         $wgLang->formatNum( $file->getWidth() ),
 634                                         $wgLang->formatNum( $file->getHeight() ) ) .
 635                         ' (' . wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $file->getSize() ) ) . ')';
 636                 $data = htmlspecialchars( $data );
 637
 638                 return "<li>$pageLink ".$this->fileUserTools( $file )." $data ".$this->fileComment( $file )."$del</li>";
 639         }
 640
 641         /**
 642          * @param ArchivedFile $file
 643          * @returns string
 644          */
 645         private function archivedfileLine( $file ) {
 646                 global $wgLang;
 647
 648                 $target = $this->page->getPrefixedText();
 649                 $date = $wgLang->timeanddate( $file->getTimestamp(), true  );
 650
 651                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 652                 $pageLink = $this->skin->makeKnownLinkObj( $undelete, $date, "target=$target&file={$file->getKey()}" );
 653
 654                 $del = '';
 655                 if( $file->isDeleted(File::DELETED_FILE) ) {
 656                         $del = ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 657                 }
 658
 659                 $data = wfMsg( 'widthheight',
 660                                         $wgLang->formatNum( $file->getWidth() ),
 661                                         $wgLang->formatNum( $file->getHeight() ) ) .
 662                         ' (' . wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $file->getSize() ) ) . ')';
 663                 $data = htmlspecialchars( $data );
 664
 665                 return "<li> $pageLink ".$this->fileUserTools( $file )." $data ".$this->fileComment( $file )."$del</li>";
 666         }
 667
 668         /**
 669          * @param Array $row row
 670          * @returns string
 671          */
 672         private function logLine( $row ) {
 673                 global $wgLang;
 674
 675                 $date = $wgLang->timeanddate( $row->log_timestamp );
 676                 $paramArray = LogPage::extractParams( $row->log_params );
 677                 $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 678
 679                 $logtitle = SpecialPage::getTitleFor( 'Log' );
 680                 $loglink = $this->skin->makeKnownLinkObj( $logtitle, wfMsgHtml( 'log' ),
 681                         wfArrayToCGI( array( 'page' => $title->getPrefixedUrl() ) ) );
 682                 // Action text
 683                 if( !LogEventsList::userCan($row,LogPage::DELETED_ACTION) ) {
 684                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 685                 } else {
 686                         $action = LogPage::actionText( $row->log_type, $row->log_action, $title,
 687                                 $this->skin, $paramArray, true, true );
 688                         if( $row->log_deleted & LogPage::DELETED_ACTION )
 689                                 $action = '<span class="history-deleted">' . $action . '</span>';
 690                 }
 691                 // User links
 692                 $userLink = $this->skin->userLink( $row->log_user, User::WhoIs($row->log_user) );
 693                 if( LogEventsList::isDeleted($row,LogPage::DELETED_USER) ) {
 694                         $userLink = '<span class="history-deleted">' . $userLink . '</span>';
 695                 }
 696                 // Comment
 697                 $comment = $wgLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
 698                 if( LogEventsList::isDeleted($row,LogPage::DELETED_COMMENT) ) {
 699                         $comment = '<span class="history-deleted">' . $comment . '</span>';
 700                 }
 701                 return "<li>($loglink) $date $userLink $action $comment</li>";
 702         }
 703
 704         /**
 705          * Generate a user tool link cluster if the current user is allowed to view it
 706          * @param ArchivedFile $file
 707          * @return string HTML
 708          */
 709         private function fileUserTools( $file ) {
 710                 if( $file->userCan( Revision::DELETED_USER ) ) {
 711                         $link = $this->skin->userLink( $file->user, $file->user_text ) .
 712                                 $this->skin->userToolLinks( $file->user, $file->user_text );
 713                 } else {
 714                         $link = wfMsgHtml( 'rev-deleted-user' );
 715                 }
 716                 if( $file->isDeleted( Revision::DELETED_USER ) ) {
 717                         return '<span class="history-deleted">' . $link . '</span>';
 718                 }
 719                 return $link;
 720         }
 721
 722         /**
 723          * Wrap and format the given file's comment block, if the current
 724          * user is allowed to view it.
 725          *
 726          * @param ArchivedFile $file
 727          * @return string HTML
 728          */
 729         private function fileComment( $file ) {
 730                 if( $file->userCan( File::DELETED_COMMENT ) ) {
 731                         $block = $this->skin->commentBlock( $file->description );
 732                 } else {
 733                         $block = ' ' . wfMsgHtml( 'rev-deleted-comment' );
 734                 }
 735                 if( $file->isDeleted( File::DELETED_COMMENT ) ) {
 736                         return "<span class=\"history-deleted\">$block</span>";
 737                 }
 738                 return $block;
 739         }
 740
 741         /**
 742          * @param WebRequest $request
 743          */
 744         private function submit( $request ) {
 745                 global $wgUser, $wgOut;
 746                 # Check edit token on submission
 747                 if( $this->wasPosted && !$wgUser->matchEditToken( $request->getVal('wpEditToken') ) ) {
 748                         $wgOut->addWikiMsg( 'sessionfailure' );
 749                         return false;
 750                 }
 751                 $bitfield = $this->extractBitfield( $request );
 752                 $comment = $request->getText( 'wpReason' );
 753                 # Can the user set this field?
 754                 if( $bitfield & Revision::DELETED_RESTRICTED && !$wgUser->isAllowed('suppressrevision') ) {
 755                         $wgOut->permissionRequired( 'suppressrevision' );
 756                         return false;
 757                 }
 758                 # If the save went through, go to success message. Otherwise
 759                 # bounce back to form...
 760                 if( $this->save( $bitfield, $comment, $this->page ) ) {
 761                         $this->success();
 762                 } else if( $request->getCheck( 'oldid' ) || $request->getCheck( 'artimestamp' ) ) {
 763                         return $this->showRevs();
 764                 } else if( $request->getCheck( 'logid' ) ) {
 765                         return $this->showLogs();
 766                 } else if( $request->getCheck( 'oldimage' ) || $request->getCheck( 'fileid' ) ) {
 767                         return $this->showImages();
 768                 }
 769         }
 770
 771         private function success() {
 772                 global $wgOut;
 773
 774                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 775
 776                 $wrap = '<span class="success">$1</span>';
 777
 778                 if( $this->deleteKey=='logid' ) {
 779                         $wgOut->wrapWikiMsg( $wrap, 'logdelete-success' );
 780                         $this->showLogItems();
 781                 } else if( $this->deleteKey=='oldid' || $this->deleteKey=='artimestamp' ) {
 782                                 $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 783                         $this->showRevs();
 784                 } else if( $this->deleteKey=='fileid' ) {
 785                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 786                         $this->showImages();
 787                 } else if( $this->deleteKey=='oldimage' ) {
 788                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 789                         $this->showImages();
 790                 }
 791         }
 792
 793         /**
 794          * Put together a rev_deleted bitfield from the submitted checkboxes
 795          * @param WebRequest $request
 796          * @return int
 797          */
 798         private function extractBitfield( $request ) {
 799                 $bitfield = 0;
 800                 foreach( $this->checks as $item ) {
 801                         list( /* message */ , $name, $field ) = $item;
 802                         if( $request->getCheck( $name ) ) {
 803                                 $bitfield |= $field;
 804                         }
 805                 }
 806                 return $bitfield;
 807         }
 808
 809         private function save( $bitfield, $reason, $title ) {
 810                 $dbw = wfGetDB( DB_MASTER );
 811                 // Don't allow simply locking the interface for no reason
 812                 if( $bitfield == Revision::DELETED_RESTRICTED ) {
 813                         $bitfield = 0;
 814                 }
 815                 $deleter = new RevisionDeleter( $dbw );
 816                 // By this point, only one of the below should be set
 817                 if( isset($this->revisions) ) {
 818                         return $deleter->setRevVisibility( $title, $this->revisions, $bitfield, $reason );
 819                 } else if( isset($this->archrevs) ) {
 820                         return $deleter->setArchiveVisibility( $title, $this->archrevs, $bitfield, $reason );
 821                 } else if( isset($this->ofiles) ) {
 822                         return $deleter->setOldImgVisibility( $title, $this->ofiles, $bitfield, $reason );
 823                 } else if( isset($this->afiles) ) {
 824                         return $deleter->setArchFileVisibility( $title, $this->afiles, $bitfield, $reason );
 825                 } else if( isset($this->events) ) {
 826                         return $deleter->setEventVisibility( $title, $this->events, $bitfield, $reason );
 827                 }
 828         }
 829 }
 830
 831 /**
 832  * Implements the actions for Revision Deletion.
 833  * @ingroup SpecialPage
 834  */
 835 class RevisionDeleter {
 836         function __construct( $db ) {
 837                 $this->dbw = $db;
 838         }
 839
 840         /**
 841          * @param $title, the page these events apply to
 842          * @param array $items list of revision ID numbers
 843          * @param int $bitfield new rev_deleted value
 844          * @param string $comment Comment for log records
 845          */
 846         function setRevVisibility( $title, $items, $bitfield, $comment ) {
 847                 global $wgOut;
 848
 849                 $userAllowedAll = $success = true;
 850                 $revIDs = array();
 851                 $revCount = 0;
 852                 // Run through and pull all our data in one query
 853                 foreach( $items as $revid ) {
 854                         $where[] = intval($revid);
 855                 }
 856                 $result = $this->dbw->select( 'revision', '*',
 857                         array(
 858                                 'rev_page' => $title->getArticleID(),
 859                                 'rev_id' => $where ),
 860                         __METHOD__ );
 861                 while( $row = $this->dbw->fetchObject( $result ) ) {
 862                         $revObjs[$row->rev_id] = new Revision( $row );
 863                 }
 864                 // To work!
 865                 foreach( $items as $revid ) {
 866                         if( !isset($revObjs[$revid]) || $revObjs[$revid]->isCurrent() ) {
 867                                 $success = false;
 868                                 continue; // Must exist
 869                         } else if( !$revObjs[$revid]->userCan(Revision::DELETED_RESTRICTED) ) {
 870                         $userAllowedAll=false;
 871                                 continue;
 872                         }
 873                         // For logging, maintain a count of revisions
 874                         if( $revObjs[$revid]->mDeleted != $bitfield ) {
 875                                 $revCount++;
 876                                 $revIDs[]=$revid;
 877
 878                                 $this->updateRevision( $revObjs[$revid], $bitfield );
 879                                 $this->updateRecentChangesEdits( $revObjs[$revid], $bitfield, false );
 880                         }
 881                 }
 882                 // Clear caches...
 883                 // Don't log or touch if nothing changed
 884                 if( $revCount > 0 ) {
 885                         $this->updateLog( $title, $revCount, $bitfield, $revObjs[$revid]->mDeleted,
 886                                 $comment, $title, 'oldid', $revIDs );
 887                         $this->updatePage( $title );
 888                 }
 889                 // Where all revs allowed to be set?
 890                 if( !$userAllowedAll ) {
 891                         //FIXME: still might be confusing???
 892                         $wgOut->permissionRequired( 'suppressrevision' );
 893                         return false;
 894                 }
 895
 896                 return $success;
 897         }
 898
 899          /**
 900          * @param $title, the page these events apply to
 901          * @param array $items list of revision ID numbers
 902          * @param int $bitfield new rev_deleted value
 903          * @param string $comment Comment for log records
 904          */
 905         function setArchiveVisibility( $title, $items, $bitfield, $comment ) {
 906                 global $wgOut;
 907
 908                 $userAllowedAll = $success = true;
 909                 $count = 0;
 910                 $Id_set = array();
 911                 // Run through and pull all our data in one query
 912                 foreach( $items as $timestamp ) {
 913                         $where[] = $this->dbw->timestamp( $timestamp );
 914                 }
 915                 $result = $this->dbw->select( 'archive', '*',
 916                         array(
 917                                 'ar_namespace' => $title->getNamespace(),
 918                                 'ar_title' => $title->getDBKey(),
 919                                 'ar_timestamp' => $where ),
 920                         __METHOD__ );
 921                 while( $row = $this->dbw->fetchObject( $result ) ) {
 922                         $timestamp = wfTimestamp( TS_MW, $row->ar_timestamp );
 923                         $revObjs[$timestamp] = new Revision( array(
 924                                 'page'       => $title->getArticleId(),
 925                                 'id'         => $row->ar_rev_id,
 926                                 'text'       => $row->ar_text_id,
 927                                 'comment'    => $row->ar_comment,
 928                                 'user'       => $row->ar_user,
 929                                 'user_text'  => $row->ar_user_text,
 930                                 'timestamp'  => $timestamp,
 931                                 'minor_edit' => $row->ar_minor_edit,
 932                                 'text_id'    => $row->ar_text_id,
 933                                 'deleted'    => $row->ar_deleted,
 934                                 'len'        => $row->ar_len) );
 935                 }
 936                 // To work!
 937                 foreach( $items as $timestamp ) {
 938                         // This will only select the first revision with this timestamp.
 939                         // Since they are all selected/deleted at once, we can just check the
 940                         // permissions of one. UPDATE is done via timestamp, so all revs are set.
 941                         if( !is_object($revObjs[$timestamp]) ) {
 942                                 $success = false;
 943                                 continue; // Must exist
 944                         } else if( !$revObjs[$timestamp]->userCan(Revision::DELETED_RESTRICTED) ) {
 945                         $userAllowedAll=false;
 946                                 continue;
 947                         }
 948                         // Which revisions did we change anything about?
 949                         if( $revObjs[$timestamp]->mDeleted != $bitfield ) {
 950                            $Id_set[]=$timestamp;
 951                            $count++;
 952
 953                            $this->updateArchive( $revObjs[$timestamp], $title, $bitfield );
 954                         }
 955                 }
 956                 // For logging, maintain a count of revisions
 957                 if( $count > 0 ) {
 958                         $this->updateLog( $title, $count, $bitfield, $revObjs[$timestamp]->mDeleted,
 959                                 $comment, $title, 'artimestamp', $Id_set );
 960                 }
 961                 // Where all revs allowed to be set?
 962                 if( !$userAllowedAll ) {
 963                         $wgOut->permissionRequired( 'suppressrevision' );
 964                         return false;
 965                 }
 966
 967                 return $success;
 968         }
 969
 970          /**
 971          * @param $title, the page these events apply to
 972          * @param array $items list of revision ID numbers
 973          * @param int $bitfield new rev_deleted value
 974          * @param string $comment Comment for log records
 975          */
 976         function setOldImgVisibility( $title, $items, $bitfield, $comment ) {
 977                 global $wgOut;
 978
 979                 $userAllowedAll = $success = true;
 980                 $count = 0;
 981                 $set = array();
 982                 // Run through and pull all our data in one query
 983                 foreach( $items as $timestamp ) {
 984                         $where[] = $timestamp.'!'.$title->getDBKey();
 985                 }
 986                 $result = $this->dbw->select( 'oldimage', '*',
 987                         array(
 988                                 'oi_name' => $title->getDBKey(),
 989                                 'oi_archive_name' => $where ),
 990                         __METHOD__ );
 991                 while( $row = $this->dbw->fetchObject( $result ) ) {
 992                         $filesObjs[$row->oi_archive_name] = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
 993                         $filesObjs[$row->oi_archive_name]->user = $row->oi_user;
 994                         $filesObjs[$row->oi_archive_name]->user_text = $row->oi_user_text;
 995                 }
 996                 // To work!
 997                 foreach( $items as $timestamp ) {
 998                         $archivename = $timestamp.'!'.$title->getDBKey();
 999                         if( !isset($filesObjs[$archivename]) ) {
1000                                 $success = false;
1001                                 continue; // Must exist
1002                         } else if( !$filesObjs[$archivename]->userCan(File::DELETED_RESTRICTED) ) {
1003                         $userAllowedAll=false;
1004                                 continue;
1005                         }
1006
1007                         $transaction = true;
1008                         // Which revisions did we change anything about?
1009                         if( $filesObjs[$archivename]->deleted != $bitfield ) {
1010                                 $count++;
1011
1012                                 $this->dbw->begin();
1013                                 $this->updateOldFiles( $filesObjs[$archivename], $bitfield );
1014                                 // If this image is currently hidden...
1015                                 if( $filesObjs[$archivename]->deleted & File::DELETED_FILE ) {
1016                                         if( $bitfield & File::DELETED_FILE ) {
1017                                                 # Leave it alone if we are not changing this...
1018                                                 $set[]=$archivename;
1019                                                 $transaction = true;
1020                                         } else {
1021                                                 # We are moving this out
1022                                                 $transaction = $this->makeOldImagePublic( $filesObjs[$archivename] );
1023                                                 $set[]=$transaction;
1024                                         }
1025                                 // Is it just now becoming hidden?
1026                                 } else if( $bitfield & File::DELETED_FILE ) {
1027                                         $transaction = $this->makeOldImagePrivate( $filesObjs[$archivename] );
1028                                         $set[]=$transaction;
1029                                 } else {
1030                                         $set[]=$timestamp;
1031                                 }
1032                                 // If our file operations fail, then revert back the db
1033                                 if( $transaction==false ) {
1034                                         $this->dbw->rollback();
1035                                         return false;
1036                                 }
1037                                 $this->dbw->commit();
1038                         }
1039                 }
1040
1041                 // Log if something was changed
1042                 if( $count > 0 ) {
1043                         $this->updateLog( $title, $count, $bitfield, $filesObjs[$archivename]->deleted,
1044                                 $comment, $title, 'oldimage', $set );
1045                         # Purge page/history
1046                         $file = wfLocalFile( $title );
1047                         $file->purgeCache();
1048                         $file->purgeHistory();
1049                         # Invalidate cache for all pages using this file
1050                         $update = new HTMLCacheUpdate( $title, 'imagelinks' );
1051                         $update->doUpdate();
1052                 }
1053                 // Where all revs allowed to be set?
1054                 if( !$userAllowedAll ) {
1055                         $wgOut->permissionRequired( 'suppressrevision' );
1056                         return false;
1057                 }
1058
1059                 return $success;
1060         }
1061
1062          /**
1063          * @param $title, the page these events apply to
1064          * @param array $items list of revision ID numbers
1065          * @param int $bitfield new rev_deleted value
1066          * @param string $comment Comment for log records
1067          */
1068         function setArchFileVisibility( $title, $items, $bitfield, $comment ) {
1069                 global $wgOut;
1070
1071                 $userAllowedAll = $success = true;
1072                 $count = 0;
1073                 $Id_set = array();
1074
1075                 // Run through and pull all our data in one query
1076                 foreach( $items as $id ) {
1077                         $where[] = intval($id);
1078                 }
1079                 $result = $this->dbw->select( 'filearchive', '*',
1080                         array( 'fa_name' => $title->getDBKey(),
1081                                 'fa_id' => $where ),
1082                         __METHOD__ );
1083                 while( $row = $this->dbw->fetchObject( $result ) ) {
1084                         $filesObjs[$row->fa_id] = ArchivedFile::newFromRow( $row );
1085                 }
1086                 // To work!
1087                 foreach( $items as $fileid ) {
1088                         if( !isset($filesObjs[$fileid]) ) {
1089                                 $success = false;
1090                                 continue; // Must exist
1091                         } else if( !$filesObjs[$fileid]->userCan(File::DELETED_RESTRICTED) ) {
1092                         $userAllowedAll=false;
1093                                 continue;
1094                         }
1095                         // Which revisions did we change anything about?
1096                         if( $filesObjs[$fileid]->deleted != $bitfield ) {
1097                            $Id_set[]=$fileid;
1098                            $count++;
1099
1100                            $this->updateArchFiles( $filesObjs[$fileid], $bitfield );
1101                         }
1102                 }
1103                 // Log if something was changed
1104                 if( $count > 0 ) {
1105                         $this->updateLog( $title, $count, $bitfield, $comment,
1106                                 $filesObjs[$fileid]->deleted, $title, 'fileid', $Id_set );
1107                 }
1108                 // Where all revs allowed to be set?
1109                 if( !$userAllowedAll ) {
1110                         $wgOut->permissionRequired( 'suppressrevision' );
1111                         return false;
1112                 }
1113
1114                 return $success;
1115         }
1116
1117         /**
1118          * @param $title, the log page these events apply to
1119          * @param array $items list of log ID numbers
1120          * @param int $bitfield new log_deleted value
1121          * @param string $comment Comment for log records
1122          */
1123         function setEventVisibility( $title, $items, $bitfield, $comment ) {
1124                 global $wgOut;
1125
1126                 $userAllowedAll = $success = true;
1127                 $count = 0;
1128                 $log_Ids = array();
1129
1130                 // Run through and pull all our data in one query
1131                 foreach( $items as $logid ) {
1132                         $where[] = intval($logid);
1133                 }
1134                 list($log,$logtype) = explode( '/',$title->getDBKey(), 2 );
1135                 $result = $this->dbw->select( 'logging', '*',
1136                         array(
1137                                 'log_type' => $logtype,
1138                                 'log_id' => $where ),
1139                         __METHOD__ );
1140                 while( $row = $this->dbw->fetchObject( $result ) ) {
1141                         $logRows[$row->log_id] = $row;
1142                 }
1143                 // To work!
1144                 foreach( $items as $logid ) {
1145                         if( !isset($logRows[$logid]) ) {
1146                                 $success = false;
1147                                 continue; // Must exist
1148                         } else if( !LogEventsList::userCan($logRows[$logid], LogPage::DELETED_RESTRICTED)
1149                                  || $logRows[$logid]->log_type == 'suppress' ) {
1150                         // Don't hide from oversight log!!!
1151                         $userAllowedAll=false;
1152                         continue;
1153                         }
1154                         // Which logs did we change anything about?
1155                         if( $logRows[$logid]->log_deleted != $bitfield ) {
1156                                 $log_Ids[]=$logid;
1157                                 $count++;
1158
1159                                 $this->updateLogs( $logRows[$logid], $bitfield );
1160                                 $this->updateRecentChangesLog( $logRows[$logid], $bitfield, true );
1161                         }
1162                 }
1163                 // Don't log or touch if nothing changed
1164                 if( $count > 0 ) {
1165                         $this->updateLog( $title, $count, $bitfield, $logRows[$logid]->log_deleted,
1166                                 $comment, $title, 'logid', $log_Ids );
1167                 }
1168                 // Were all revs allowed to be set?
1169                 if( !$userAllowedAll ) {
1170                         $wgOut->permissionRequired( 'suppressrevision' );
1171                         return false;
1172                 }
1173
1174                 return $success;
1175         }
1176
1177         /**
1178          * Moves an image to a safe private location
1179          * Caller is responsible for clearing caches
1180          * @param File $oimage
1181          * @returns mixed, timestamp string on success, false on failure
1182          */
1183         function makeOldImagePrivate( $oimage ) {
1184                 $transaction = new FSTransaction();
1185                 if( !FileStore::lock() ) {
1186                         wfDebug( __METHOD__.": failed to acquire file store lock, aborting\n" );
1187                         return false;
1188                 }
1189                 $oldpath = $oimage->getArchivePath() . DIRECTORY_SEPARATOR . $oimage->archive_name;
1190                 // Dupe the file into the file store
1191                 if( file_exists( $oldpath ) ) {
1192                         // Is our directory configured?
1193                         if( $store = FileStore::get( 'deleted' ) ) {
1194                                 if( !$oimage->sha1 ) {
1195                                         $oimage->upgradeRow(); // sha1 may be missing
1196                                 }
1197                                 $key = $oimage->sha1 . '.' . $oimage->getExtension();
1198                                 $transaction->add( $store->insert( $key, $oldpath, FileStore::DELETE_ORIGINAL ) );
1199                         } else {
1200                                 $group = null;
1201                                 $key = null;
1202                                 $transaction = false; // Return an error and do nothing
1203                         }
1204                 } else {
1205                         wfDebug( __METHOD__." deleting already-missing '$oldpath'; moving on to database\n" );
1206                         $group = null;
1207                         $key = '';
1208                         $transaction = new FSTransaction(); // empty
1209                 }
1210
1211                 if( $transaction === false ) {
1212                         // Fail to restore?
1213                         wfDebug( __METHOD__.": import to file store failed, aborting\n" );
1214                         throw new MWException( "Could not archive and delete file $oldpath" );
1215                         return false;
1216                 }
1217
1218                 wfDebug( __METHOD__.": set db items, applying file transactions\n" );
1219                 $transaction->commit();
1220                 FileStore::unlock();
1221
1222                 $m = explode('!',$oimage->archive_name,2);
1223                 $timestamp = $m[0];
1224
1225                 return $timestamp;
1226         }
1227
1228         /**
1229          * Moves an image from a safe private location
1230          * Caller is responsible for clearing caches
1231          * @param File $oimage
1232          * @returns mixed, string timestamp on success, false on failure
1233          */
1234         function makeOldImagePublic( $oimage ) {
1235                 $transaction = new FSTransaction();
1236                 if( !FileStore::lock() ) {
1237                         wfDebug( __METHOD__." could not acquire filestore lock\n" );
1238                         return false;
1239                 }
1240
1241                 $store = FileStore::get( 'deleted' );
1242                 if( !$store ) {
1243                         wfDebug( __METHOD__.": skipping row with no file.\n" );
1244                         return false;
1245                 }
1246
1247                 $key = $oimage->sha1.'.'.$oimage->getExtension();
1248                 $destDir = $oimage->getArchivePath();
1249                 if( !is_dir( $destDir ) ) {
1250                         wfMkdirParents( $destDir );
1251                 }
1252                 $destPath = $destDir . DIRECTORY_SEPARATOR . $oimage->archive_name;
1253                 // Check if any other stored revisions use this file;
1254                 // if so, we shouldn't remove the file from the hidden
1255                 // archives so they will still work. Check hidden files first.
1256                 $useCount = $this->dbw->selectField( 'oldimage', '1',
1257                         array( 'oi_sha1' => $oimage->sha1,
1258                                 'oi_deleted & '.File::DELETED_FILE => File::DELETED_FILE ),
1259                         __METHOD__, array( 'FOR UPDATE' ) );
1260                 // Check the rest of the deleted archives too.
1261                 // (these are the ones that don't show in the image history)
1262                 if( !$useCount ) {
1263                         $useCount = $this->dbw->selectField( 'filearchive', '1',
1264                                 array( 'fa_storage_group' => 'deleted', 'fa_storage_key' => $key ),
1265                                 __METHOD__, array( 'FOR UPDATE' ) );
1266                 }
1267
1268                 if( $useCount == 0 ) {
1269                         wfDebug( __METHOD__.": nothing else using {$oimage->sha1}, will deleting after\n" );
1270                         $flags = FileStore::DELETE_ORIGINAL;
1271                 } else {
1272                         $flags = 0;
1273                 }
1274                 $transaction->add( $store->export( $key, $destPath, $flags ) );
1275
1276                 wfDebug( __METHOD__.": set db items, applying file transactions\n" );
1277                 $transaction->commit();
1278                 FileStore::unlock();
1279
1280                 $m = explode('!',$oimage->archive_name,2);
1281                 $timestamp = $m[0];
1282
1283                 return $timestamp;
1284         }
1285
1286         /**
1287          * Update the revision's rev_deleted field
1288          * @param Revision $rev
1289          * @param int $bitfield new rev_deleted bitfield value
1290          */
1291         function updateRevision( $rev, $bitfield ) {
1292                 $this->dbw->update( 'revision',
1293                         array( 'rev_deleted' => $bitfield ),
1294                         array( 'rev_id' => $rev->getId(),
1295                                 'rev_page' => $rev->getPage() ),
1296                         __METHOD__ );
1297         }
1298
1299         /**
1300          * Update the revision's rev_deleted field
1301          * @param Revision $rev
1302          * @param Title $title
1303          * @param int $bitfield new rev_deleted bitfield value
1304          */
1305         function updateArchive( $rev, $title, $bitfield ) {
1306                 $this->dbw->update( 'archive',
1307                         array( 'ar_deleted' => $bitfield ),
1308                         array( 'ar_namespace' => $title->getNamespace(),
1309                                 'ar_title'     => $title->getDBKey(),
1310                                 'ar_timestamp' => $this->dbw->timestamp( $rev->getTimestamp() ),
1311                                 'ar_rev_id' => $rev->getId() ),
1312                         __METHOD__ );
1313         }
1314
1315         /**
1316          * Update the images's oi_deleted field
1317          * @param File $file
1318          * @param int $bitfield new rev_deleted bitfield value
1319          */
1320         function updateOldFiles( $file, $bitfield ) {
1321                 $this->dbw->update( 'oldimage',
1322                         array( 'oi_deleted' => $bitfield ),
1323                         array( 'oi_name' => $file->getName(),
1324                                 'oi_timestamp' => $this->dbw->timestamp( $file->getTimestamp() ) ),
1325                         __METHOD__ );
1326         }
1327
1328         /**
1329          * Update the images's fa_deleted field
1330          * @param ArchivedFile $file
1331          * @param int $bitfield new rev_deleted bitfield value
1332          */
1333         function updateArchFiles( $file, $bitfield ) {
1334                 $this->dbw->update( 'filearchive',
1335                         array( 'fa_deleted' => $bitfield ),
1336                         array( 'fa_id' => $file->getId() ),
1337                         __METHOD__ );
1338         }
1339
1340         /**
1341          * Update the logging log_deleted field
1342          * @param Row $row
1343          * @param int $bitfield new rev_deleted bitfield value
1344          */
1345         function updateLogs( $row, $bitfield ) {
1346                 $this->dbw->update( 'logging',
1347                         array( 'log_deleted' => $bitfield ),
1348                         array( 'log_id' => $row->log_id ),
1349                         __METHOD__ );
1350         }
1351
1352         /**
1353          * Update the revision's recentchanges record if fields have been hidden
1354          * @param Revision $rev
1355          * @param int $bitfield new rev_deleted bitfield value
1356          */
1357         function updateRecentChangesEdits( $rev, $bitfield ) {
1358                 $this->dbw->update( 'recentchanges',
1359                         array( 'rc_deleted' => $bitfield,
1360                                    'rc_patrolled' => 1 ),
1361                         array( 'rc_this_oldid' => $rev->getId(),
1362                                 'rc_timestamp' => $this->dbw->timestamp( $rev->getTimestamp() ) ),
1363                         __METHOD__ );
1364         }
1365
1366         /**
1367          * Update the revision's recentchanges record if fields have been hidden
1368          * @param Row $row
1369          * @param int $bitfield new rev_deleted bitfield value
1370          */
1371         function updateRecentChangesLog( $row, $bitfield ) {
1372                 $this->dbw->update( 'recentchanges',
1373                         array( 'rc_deleted' => $bitfield,
1374                                    'rc_patrolled' => 1 ),
1375                         array( 'rc_logid' => $row->log_id,
1376                                 'rc_timestamp' => $row->log_timestamp ),
1377                         __METHOD__ );
1378         }
1379
1380         /**
1381          * Touch the page's cache invalidation timestamp; this forces cached
1382          * history views to refresh, so any newly hidden or shown fields will
1383          * update properly.
1384          * @param Title $title
1385          */
1386         function updatePage( $title ) {
1387                 $title->invalidateCache();
1388                 $title->purgeSquid();
1389                 $title->touchLinks();
1390                 // Extensions that require referencing previous revisions may need this
1391                 wfRunHooks( 'ArticleRevisionVisiblitySet', array( &$title ) );
1392         }
1393
1394         /**
1395          * Checks for a change in the bitfield for a certain option and updates the
1396          * provided array accordingly.
1397          *
1398          * @param String $desc Description to add to the array if the option was
1399          * enabled / disabled.
1400          * @param int $field The bitmask describing the single option.
1401          * @param int $diff The xor of the old and new bitfields.
1402          * @param array $arr The array to update.
1403          */
1404         function checkItem ( $desc, $field, $diff, $new, &$arr ) {
1405                 if ( $diff & $field ) {
1406                         $arr [ ( $new & $field ) ? 0 : 1 ][] = $desc;
1407                 }
1408         }
1409
1410         /**
1411          * Gets an array describing the changes made to the visibilit of the revision.
1412          * If the resulting array is $arr, then $arr[0] will contain an array of strings
1413          * describing the items that were hidden, $arr[2] will contain an array of strings
1414          * describing the items that were unhidden, and $arr[3] will contain an array with
1415          * a single string, which can be one of "applied restrictions to sysops",
1416          * "removed restrictions from sysops", or null.
1417          *
1418          * @param int $n The new bitfield.
1419          * @param int $o The old bitfield.
1420          * @return An array as described above.
1421          */
1422         function getChanges ( $n, $o ) {
1423                 $diff = $n ^ $o;
1424                 $ret = array ( 0 => array(), 1 => array(), 2 => array() );
1425
1426                 $this->checkItem ( wfMsgForContent ( 'revdelete-content' ),
1427                                 Revision::DELETED_TEXT, $diff, $n, $ret );
1428                 $this->checkItem ( wfMsgForContent ( 'revdelete-summary' ),
1429                                 Revision::DELETED_COMMENT, $diff, $n, $ret );
1430                 $this->checkItem ( wfMsgForContent ( 'revdelete-uname' ),
1431                                 Revision::DELETED_USER, $diff, $n, $ret );
1432
1433                 // Restriction application to sysops
1434                 if ( $diff & Revision::DELETED_RESTRICTED ) {
1435                         if ( $n & Revision::DELETED_RESTRICTED )
1436                                 $ret[2][] = wfMsgForContent ( 'revdelete-restricted' );
1437                         else
1438                                 $ret[2][] = wfMsgForContent ( 'revdelete-unrestricted' );
1439                 }
1440
1441                 return $ret;
1442         }
1443
1444         /**
1445          * Gets a log message to describe the given revision visibility change. This
1446          * message will be of the form "[hid {content, edit summary, username}];
1447          * [unhid {...}][applied restrictions to sysops] for $count revisions: $comment".
1448          *
1449          * @param int $count The number of effected revisions.
1450          * @param int $nbitfield The new bitfield for the revision.
1451          * @param int $obitfield The old bitfield for the revision.
1452          * @param string $comment The comment associated with the change.
1453          * @param bool $isForLog
1454          */
1455         function getLogMessage ( $count, $nbitfield, $obitfield, $comment, $isForLog = false ) {
1456                 global $wgContLang;
1457
1458                 $s = '';
1459                 $changes = $this->getChanges( $nbitfield, $obitfield );
1460
1461                 if ( count ( $changes[0] ) ) {
1462                         $s .= wfMsgForContent ( 'revdelete-hid', implode ( ', ', $changes[0] ) );
1463                 }
1464
1465                 if ( count ( $changes[1] ) ) {
1466                         if ($s) $s .= '; ';
1467
1468                         $s .= wfMsgForContent ( 'revdelete-unhid', implode ( ', ', $changes[1] ) );
1469                 }
1470
1471                 if ( count ( $changes[2] )) {
1472                         if ($s)
1473                                 $s .= ' (' . $changes[2][0] . ')';
1474                         else
1475                                 $s = $changes[2][0];
1476                 }
1477
1478                 $msg = $isForLog ? 'logdelete-log-message' : 'revdelete-log-message';
1479                 $ret = wfMsgExt ( $msg, array( 'parsemag', 'content' ),
1480                         $s, $wgContLang->formatNum( $count ) );
1481
1482                 if ( $comment )
1483                         $ret .= ": $comment";
1484
1485                 return $ret;
1486
1487         }
1488
1489         /**
1490          * Record a log entry on the action
1491          * @param Title $title, page where item was removed from
1492          * @param int $count the number of revisions altered for this page
1493          * @param int $nbitfield the new _deleted value
1494          * @param int $obitfield the old _deleted value
1495          * @param string $comment
1496          * @param Title $target, the relevant page
1497          * @param string $param, URL param
1498          * @param Array $items
1499          */
1500         function updateLog( $title, $count, $nbitfield, $obitfield, $comment, $target, $param, $items = array() ) {
1501                 // Put things hidden from sysops in the oversight log
1502                 $logtype = ( ($nbitfield | $obitfield) & Revision::DELETED_RESTRICTED ) ? 'suppress' : 'delete';
1503                 $log = new LogPage( $logtype );
1504
1505                 $reason = $this->getLogMessage ( $count, $nbitfield, $obitfield, $comment, $param == 'logid' );
1506
1507                 if( $param == 'logid' ) {
1508                         $params = array( implode( ',', $items) );
1509                         $log->addEntry( 'event', $title, $reason, $params );
1510                 } else {
1511                         // Add params for effected page and ids
1512                         $params = array( $param, implode( ',', $items) );
1513                         $log->addEntry( 'revision', $title, $reason, $params );
1514                 }
1515         }
1516 }