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