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 ); // paranoia
  15         }
  16
  17         public function execute( $par ) {
  18                 global $wgOut, $wgUser, $wgRequest;
  19                 if( !$wgUser->isAllowed( 'deleterevision' ) ) {
  20                         return $wgOut->permissionRequired( 'deleterevision' );
  21                 } else if( wfReadOnly() ) {
  22                         return $wgOut->readOnlyPage();
  23                 }
  24                 $this->skin =& $wgUser->getSkin();
  25                 $this->setHeaders();
  26                 $this->outputHeader();
  27                 $this->wasPosted = $wgRequest->wasPosted();
  28                 # Set title and such
  29                 $this->target = $wgRequest->getText( 'target' );
  30                 # Handle our many different possible input types.
  31                 # Use CVS, since the cgi handling will break on arrays.
  32                 $this->oldids = array_filter( explode( ',', $wgRequest->getVal('oldid') ) );
  33                 $this->artimestamps = array_filter( explode( ',', $wgRequest->getVal('artimestamp') ) );
  34                 $this->logids = array_filter( explode( ',', $wgRequest->getVal('logid') ) );
  35                 $this->oldimgs = array_filter( explode( ',', $wgRequest->getVal('oldimage') ) );
  36                 $this->fileids = array_filter( explode( ',', $wgRequest->getVal('fileid') ) );
  37                 # For reviewing deleted files...
  38                 $this->file = $wgRequest->getVal( 'file' );
  39                 # Only one target set at a time please!
  40                 $types = (bool)$this->file + (bool)$this->oldids + (bool)$this->logids
  41                         + (bool)$this->artimestamps + (bool)$this->fileids + (bool)$this->oldimgs;
  42                 # No targets?
  43                 if( $types == 0 ) {
  44                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
  45                         return;
  46                 # Too many targets?
  47                 } else if( $types > 1 ) {
  48                         $wgOut->showErrorPage( 'revdelete-toomanytargets-title', 'revdelete-toomanytargets-text' );
  49                         return;
  50                 }
  51                 $this->page = Title::newFromUrl( $this->target );
  52                 $this->contextPage = Title::newFromUrl( $wgRequest->getText( 'page' ) );
  53                 # If we have revisions, get the title from the first one
  54                 # since they should all be from the same page. This allows
  55                 # for more flexibility with page moves...
  56                 if( count($this->oldids) > 0 ) {
  57                         $rev = Revision::newFromId( $this->oldids[0] );
  58                         $this->page = $rev ? $rev->getTitle() : $this->page;
  59                 }
  60                 # We need a target page!
  61                 if( is_null($this->page) ) {
  62                         return $wgOut->addWikiMsg( 'undelete-header' );
  63                 }
  64                 # For reviewing deleted files...show it now if allowed
  65                 if( $this->file ) {
  66                         return $this->tryShowFile( $this->file );
  67                 }
  68                 # Logs must have a type given
  69                 if( $this->logids && !strpos($this->page->getDBKey(),'/') ) {
  70                         return $wgOut->showErrorPage( 'revdelete-nologtype-title', 'revdelete-nologtype-text' );
  71                 }
  72                 # Give a link to the logs/hist for this page
  73                 $this->showConvenienceLinks();
  74                 # Lock the operation and the form context
  75                 $this->secureOperation();
  76                 # Either submit or create our form
  77                 if( $this->wasPosted ) {
  78                         $this->submit( $wgRequest );
  79                 } else if( $this->deleteKey == 'oldid' || $this->deleteKey == 'artimestamp' ) {
  80                         $this->showRevs();
  81                 } else if( $this->deleteKey == 'fileid' || $this->deleteKey == 'oldimage' ) {
  82                         $this->showImages();
  83                 } else if( $this->deleteKey == 'logid' ) {
  84                         $this->showLogItems();
  85                 }
  86                 list($qc,$lim) = $this->getLogQueryCond();
  87                 # Show relevant lines from the deletion log
  88                 $wgOut->addHTML( "<h2>" . htmlspecialchars( LogPage::logName( 'delete' ) ) . "</h2>\n" );
  89                 LogEventsList::showLogExtract( $wgOut, 'delete', $this->page->getPrefixedText(), '', $lim, $qc );
  90                 # Show relevant lines from the suppression log
  91                 if( $wgUser->isAllowed( 'suppressionlog' ) ) {
  92                         $wgOut->addHTML( "<h2>" . htmlspecialchars( LogPage::logName( 'suppress' ) ) . "</h2>\n" );
  93                         LogEventsList::showLogExtract( $wgOut, 'suppress', $this->page->getPrefixedText(), '', $lim, $qc );
  94                 }
  95         }
  96
  97         private function showConvenienceLinks() {
  98                 global $wgOut, $wgUser;
  99                 # Give a link to the logs/hist for this page
 100                 if( !is_null($this->page) && $this->page->getNamespace() > -1 ) {
 101                         $links = array();
 102                         $logtitle = SpecialPage::getTitleFor( 'Log' );
 103                         $links[] = $this->skin->makeKnownLinkObj( $logtitle, wfMsgHtml( 'viewpagelogs' ),
 104                                 wfArrayToCGI( array( 'page' => $this->page->getPrefixedUrl() ) ) );
 105                         # Give a link to the page history
 106                         $links[] = $this->skin->makeKnownLinkObj( $this->page, wfMsgHtml( 'pagehist' ),
 107                                 wfArrayToCGI( array( 'action' => 'history' ) ) );
 108                         # Link to deleted edits
 109                         if( $wgUser->isAllowed('undelete') ) {
 110                                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 111                                 $links[] = $this->skin->makeKnownLinkObj( $undelete, wfMsgHtml( 'deletedhist' ),
 112                                         wfArrayToCGI( array( 'target' => $this->page->getPrefixedDBkey() ) ) );
 113                         }
 114                         # Logs themselves don't have histories or archived revisions
 115                         $wgOut->setSubtitle( '<p>'.implode($links,' / ').'</p>' );
 116                 }
 117         }
 118
 119         private function getLogQueryCond() {
 120                 $ids = $safeIds = array();
 121                 $action = 'revision';
 122                 $limit = 25; // default
 123                 switch( $this->deleteKey ) {
 124                         case 'oldid':
 125                                 $ids = $this->oldids;
 126                                 break;
 127                         case 'artimestamp':
 128                                 $ids = $this->artimestamps;
 129                                 break;
 130                         case 'oldimage':
 131                                 $ids = $this->oldimgs;
 132                                 break;
 133                         case 'fileid':
 134                                 $ids = $this->fileids;
 135                                 break;
 136                         case 'logid':
 137                                 $ids = $this->logids;
 138                                 $action = 'event';
 139                                 break;
 140                 }
 141                 // Revision delete logs
 142                 $conds = array( 'log_action' => $action );
 143                 // Just get the whole log if there are a lot if items
 144                 if( count($ids) > $limit )
 145                         return array($conds,$limit);
 146                 // Digit chars only
 147                 foreach( $ids as $id ) {
 148                         if( preg_match( '/^\d+$/', $id, $m ) ) {
 149                                 $safeIds[] = $m[0];
 150                         }
 151                 }
 152                 // Optimization for logs
 153                 if( $action == 'event' ) {
 154                         $dbr = wfGetDB( DB_SLAVE );
 155                         # Get the timestamp of the first item
 156                         $first = $dbr->selectField( 'logging', 'log_timestamp',
 157                                 array('log_id' => $safeIds), __METHOD__, array('ORDER BY' => 'log_id') );
 158                         # If there are no items, then stop here
 159                         if( $first == false ) $conds = '1 = 0';
 160                         # The event was be hidden after it was made
 161                         $conds[] = 'log_timestamp > '.$dbr->addQuotes($first); // type,time index
 162                 }
 163                 // Format is <id1,id2,i3...>
 164                 if( count($safeIds) ) {
 165                         $conds[] = "log_params RLIKE '(^|\n|,)(".implode('|',$safeIds).")(,|$)'";
 166                 }
 167                 return array($conds,$limit);
 168         }
 169
 170         private function secureOperation() {
 171                 global $wgUser;
 172                 $this->deleteKey = '';
 173                 // At this point, we should only have one of these
 174                 if( $this->oldids ) {
 175                         $this->revisions = $this->oldids;
 176                         $hide_content_name = array( 'revdelete-hide-text', 'wpHideText', Revision::DELETED_TEXT );
 177                         $this->deleteKey = 'oldid';
 178                 } else if( $this->artimestamps ) {
 179                         $this->archrevs = $this->artimestamps;
 180                         $hide_content_name = array( 'revdelete-hide-text', 'wpHideText', Revision::DELETED_TEXT );
 181                         $this->deleteKey = 'artimestamp';
 182                 } else if( $this->oldimgs ) {
 183                         $this->ofiles = $this->oldimgs;
 184                         $hide_content_name = array( 'revdelete-hide-image', 'wpHideImage', File::DELETED_FILE );
 185                         $this->deleteKey = 'oldimage';
 186                 } else if( $this->fileids ) {
 187                         $this->afiles = $this->fileids;
 188                         $hide_content_name = array( 'revdelete-hide-image', 'wpHideImage', File::DELETED_FILE );
 189                         $this->deleteKey = 'fileid';
 190                 } else if( $this->logids ) {
 191                         $this->events = $this->logids;
 192                         $hide_content_name = array( 'revdelete-hide-name', 'wpHideName', LogPage::DELETED_ACTION );
 193                         $this->deleteKey = 'logid';
 194                 }
 195                 // Our checkbox messages depends one what we are doing,
 196                 // e.g. we don't hide "text" for logs or images
 197                 $this->checks = array(
 198                         $hide_content_name,
 199                         array( 'revdelete-hide-comment', 'wpHideComment', Revision::DELETED_COMMENT ),
 200                         array( 'revdelete-hide-user', 'wpHideUser', Revision::DELETED_USER )
 201                 );
 202                 if( $wgUser->isAllowed('suppressrevision') ) {
 203                         $this->checks[] = array( 'revdelete-hide-restricted',
 204                                 'wpHideRestricted', Revision::DELETED_RESTRICTED );
 205                 }
 206         }
 207
 208         /**
 209          * Show a deleted file version requested by the visitor.
 210          */
 211         private function tryShowFile( $key ) {
 212                 global $wgOut, $wgRequest;
 213                 $oimage = RepoGroup::singleton()->getLocalRepo()->newFromArchiveName( $this->page, $key );
 214                 $oimage->load();
 215                 // Check if user is allowed to see this file
 216                 if( !$oimage->userCan(File::DELETED_FILE) ) {
 217                         $wgOut->permissionRequired( 'suppressrevision' );
 218                 } else {
 219                         $wgOut->disable();
 220                         # We mustn't allow the output to be Squid cached, otherwise
 221                         # if an admin previews a deleted image, and it's cached, then
 222                         # a user without appropriate permissions can toddle off and
 223                         # nab the image, and Squid will serve it
 224                         $wgRequest->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
 225                         $wgRequest->response()->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
 226                         $wgRequest->response()->header( 'Pragma: no-cache' );
 227                         # Stream the file to the client
 228                         $store = FileStore::get( 'deleted' );
 229                         $store->stream( $key );
 230                 }
 231         }
 232
 233         /**
 234          * This lets a user set restrictions for live and archived revisions
 235          */
 236         private function showRevs() {
 237                 global $wgOut, $wgUser;
 238                 $UserAllowed = true;
 239
 240                 $count = ($this->deleteKey == 'oldid') ?
 241                         count($this->revisions) : count($this->archrevs);
 242                 $wgOut->addWikiMsg( 'revdelete-selected', $this->page->getPrefixedText(), $count );
 243
 244                 $bitfields = 0;
 245                 $wgOut->addHTML( "<ul>" );
 246
 247                 $where = $revObjs = array();
 248                 $dbr = wfGetDB( DB_MASTER );
 249
 250                 $revisions = 0;
 251                 // Live revisions...
 252                 if( $this->deleteKey == 'oldid' ) {
 253                         // Run through and pull all our data in one query
 254                         foreach( $this->revisions as $revid ) {
 255                                 $where[] = intval($revid);
 256                         }
 257                         $result = $dbr->select( array('revision','page'), '*',
 258                                 array(
 259                                         'rev_page' => $this->page->getArticleID(),
 260                                         'rev_id' => $where,
 261                                         'rev_page = page_id' ),
 262                                 __METHOD__ );
 263                         while( $row = $dbr->fetchObject( $result ) ) {
 264                                 $revObjs[$row->rev_id] = new Revision( $row );
 265                         }
 266                         foreach( $this->revisions as $revid ) {
 267                                 // Hiding top revisison is bad
 268                                 if( !isset($revObjs[$revid]) || $revObjs[$revid]->isCurrent() ) {
 269                                         continue;
 270                                 } else if( !$revObjs[$revid]->userCan(Revision::DELETED_RESTRICTED) ) {
 271                                 // If a rev is hidden from sysops
 272                                         if( !$this->wasPosted ) {
 273                                                 $wgOut->permissionRequired( 'suppressrevision' );
 274                                                 return;
 275                                         }
 276                                         $UserAllowed = false;
 277                                 }
 278                                 $revisions++;
 279                                 $wgOut->addHTML( $this->historyLine( $revObjs[$revid] ) );
 280                                 $bitfields |= $revObjs[$revid]->mDeleted;
 281                         }
 282                 // The archives...
 283                 } else {
 284                         // Run through and pull all our data in one query
 285                         foreach( $this->archrevs as $timestamp ) {
 286                                 $where[] = $dbr->timestamp( $timestamp );
 287                         }
 288                         $result = $dbr->select( 'archive', '*',
 289                                 array(
 290                                         'ar_namespace' => $this->page->getNamespace(),
 291                                         'ar_title' => $this->page->getDBKey(),
 292                                         'ar_timestamp' => $where ),
 293                                 __METHOD__ );
 294                         while( $row = $dbr->fetchObject( $result ) ) {
 295                                 $timestamp = wfTimestamp( TS_MW, $row->ar_timestamp );
 296                                 $revObjs[$timestamp] = new Revision( array(
 297                                         'page'       => $this->page->getArticleId(),
 298                                         'id'         => $row->ar_rev_id,
 299                                         'text'       => $row->ar_text_id,
 300                                         'comment'    => $row->ar_comment,
 301                                         'user'       => $row->ar_user,
 302                                         'user_text'  => $row->ar_user_text,
 303                                         'timestamp'  => $timestamp,
 304                                         'minor_edit' => $row->ar_minor_edit,
 305                                         'text_id'    => $row->ar_text_id,
 306                                         'deleted'    => $row->ar_deleted,
 307                                         'len'        => $row->ar_len) );
 308                         }
 309                         foreach( $this->archrevs as $timestamp ) {
 310                                 if( !isset($revObjs[$timestamp]) ) {
 311                                         continue;
 312                                 } else if( !$revObjs[$timestamp]->userCan(Revision::DELETED_RESTRICTED) ) {
 313                                 // If a rev is hidden from sysops
 314                                         if( !$this->wasPosted ) {
 315                                                 $wgOut->permissionRequired( 'suppressrevision' );
 316                                                 return;
 317                                         }
 318                                         $UserAllowed = false;
 319                                 }
 320                                 $revisions++;
 321                                 $wgOut->addHTML( $this->historyLine( $revObjs[$timestamp] ) );
 322                                 $bitfields |= $revObjs[$timestamp]->mDeleted;
 323                         }
 324                 }
 325                 if( !$revisions ) {
 326                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 327                         return;
 328                 }
 329
 330                 $wgOut->addHTML( "</ul>" );
 331                 // Explanation text
 332                 $this->addUsageText();
 333
 334                 // Normal sysops can always see what they did, but can't always change it
 335                 if( !$UserAllowed ) return;
 336
 337                 $items = array(
 338                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 339                         Xml::submitButton( wfMsg( 'revdelete-submit' ) )
 340                 );
 341                 $hidden = array(
 342                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 343                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 344                         Xml::hidden( 'type', $this->deleteKey )
 345                 );
 346                 if( $this->deleteKey == 'oldid' ) {
 347                         $hidden[] = Xml::hidden( 'oldid', implode(',',$this->oldids) );
 348                 } else {
 349                         $hidden[] = Xml::hidden( 'artimestamp', implode(',',$this->artimestamps) );
 350                 }
 351                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
 352                 $wgOut->addHTML(
 353                         Xml::openElement( 'form', array( 'method' => 'post',
 354                                 'action' => $special->getLocalUrl( 'action=submit' ),
 355                                 'id' => 'mw-revdel-form-revisions' ) ) .
 356                         Xml::openElement( 'fieldset' ) .
 357                         xml::element( 'legend', null,  wfMsg( 'revdelete-legend' ) )
 358                 );
 359
 360                 $wgOut->addHTML( $this->buildCheckBoxes( $bitfields ) );
 361                 foreach( $items as $item ) {
 362                         $wgOut->addHTML( Xml::tags( 'p', null, $item ) );
 363                 }
 364                 foreach( $hidden as $item ) {
 365                         $wgOut->addHTML( $item );
 366                 }
 367                 $wgOut->addHTML(
 368                         Xml::closeElement( 'fieldset' ) .
 369                         Xml::closeElement( 'form' ) . "\n"
 370                 );
 371         }
 372
 373         /**
 374          * This lets a user set restrictions for archived images
 375          */
 376         private function showImages() {
 377                 global $wgOut, $wgUser, $wgLang;
 378                 $UserAllowed = true;
 379
 380                 $count = ($this->deleteKey == 'oldimage') ? count($this->ofiles) : count($this->afiles);
 381                 $wgOut->addWikiMsg( 'revdelete-selected', $this->page->getPrefixedText(),
 382                         $wgLang->formatNum($count) );
 383
 384                 $bitfields = 0;
 385                 $wgOut->addHTML( "<ul>" );
 386
 387                 $where = $filesObjs = array();
 388                 $dbr = wfGetDB( DB_MASTER );
 389                 // Live old revisions...
 390                 $revisions = 0;
 391                 if( $this->deleteKey == 'oldimage' ) {
 392                         // Run through and pull all our data in one query
 393                         foreach( $this->ofiles as $timestamp ) {
 394                                 $where[] = $timestamp.'!'.$this->page->getDBKey();
 395                         }
 396                         $result = $dbr->select( 'oldimage', '*',
 397                                 array(
 398                                         'oi_name' => $this->page->getDBKey(),
 399                                         'oi_archive_name' => $where ),
 400                                 __METHOD__ );
 401                         while( $row = $dbr->fetchObject( $result ) ) {
 402                                 $filesObjs[$row->oi_archive_name] = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
 403                                 $filesObjs[$row->oi_archive_name]->user = $row->oi_user;
 404                                 $filesObjs[$row->oi_archive_name]->user_text = $row->oi_user_text;
 405                         }
 406                         // Check through our images
 407                         foreach( $this->ofiles as $timestamp ) {
 408                                 $archivename = $timestamp.'!'.$this->page->getDBKey();
 409                                 if( !isset($filesObjs[$archivename]) ) {
 410                                         continue;
 411                                 } else if( !$filesObjs[$archivename]->userCan(File::DELETED_RESTRICTED) ) {
 412                                         // If a rev is hidden from sysops
 413                                         if( !$this->wasPosted ) {
 414                                                 $wgOut->permissionRequired( 'suppressrevision' );
 415                                                 return;
 416                                         }
 417                                         $UserAllowed = false;
 418                                 }
 419                                 $revisions++;
 420                                 // Inject history info
 421                                 $wgOut->addHTML( $this->fileLine( $filesObjs[$archivename] ) );
 422                                 $bitfields |= $filesObjs[$archivename]->deleted;
 423                         }
 424                 // Archived files...
 425                 } else {
 426                         // Run through and pull all our data in one query
 427                         foreach( $this->afiles as $id ) {
 428                                 $where[] = intval($id);
 429                         }
 430                         $result = $dbr->select( 'filearchive', '*',
 431                                 array(
 432                                         'fa_name' => $this->page->getDBKey(),
 433                                         'fa_id' => $where ),
 434                                 __METHOD__ );
 435                         while( $row = $dbr->fetchObject( $result ) ) {
 436                                 $filesObjs[$row->fa_id] = ArchivedFile::newFromRow( $row );
 437                         }
 438
 439                         foreach( $this->afiles as $fileid ) {
 440                                 if( !isset($filesObjs[$fileid]) ) {
 441                                         continue;
 442                                 } else if( !$filesObjs[$fileid]->userCan(File::DELETED_RESTRICTED) ) {
 443                                         // If a rev is hidden from sysops
 444                                         if( !$this->wasPosted ) {
 445                                                 $wgOut->permissionRequired( 'suppressrevision' );
 446                                                 return;
 447                                         }
 448                                         $UserAllowed = false;
 449                                 }
 450                                 $revisions++;
 451                                 // Inject history info
 452                                 $wgOut->addHTML( $this->archivedfileLine( $filesObjs[$fileid] ) );
 453                                 $bitfields |= $filesObjs[$fileid]->deleted;
 454                         }
 455                 }
 456                 if( !$revisions ) {
 457                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 458                         return;
 459                 }
 460
 461                 $wgOut->addHTML( "</ul>" );
 462                 // Explanation text
 463                 $this->addUsageText();
 464                 // Normal sysops can always see what they did, but can't always change it
 465                 if( !$UserAllowed ) return;
 466
 467                 $items = array(
 468                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 469                         Xml::submitButton( wfMsg( 'revdelete-submit' ) )
 470                 );
 471                 $hidden = array(
 472                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 473                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 474                         Xml::hidden( 'type', $this->deleteKey )
 475                 );
 476                 if( $this->deleteKey == 'oldimage' ) {
 477                         $hidden[] = Xml::hidden( 'oldimage', implode(',',$this->oldimgs) );
 478                 } else {
 479                         $hidden[] = Xml::hidden( 'fileid', implode(',',$this->fileids) );
 480                 }
 481                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
 482                 $wgOut->addHTML(
 483                         Xml::openElement( 'form', array( 'method' => 'post',
 484                                 'action' => $special->getLocalUrl( 'action=submit' ),
 485                                 'id' => 'mw-revdel-form-filerevisions' )
 486                         ) .
 487                         Xml::fieldset( wfMsg( 'revdelete-legend' ) )
 488                 );
 489
 490                 $wgOut->addHTML( $this->buildCheckBoxes( $bitfields ) );
 491                 foreach( $items as $item ) {
 492                         $wgOut->addHTML( "<p>$item</p>" );
 493                 }
 494                 foreach( $hidden as $item ) {
 495                         $wgOut->addHTML( $item );
 496                 }
 497
 498                 $wgOut->addHTML(
 499                         Xml::closeElement( 'fieldset' ) .
 500                         Xml::closeElement( 'form' ) . "\n"
 501                 );
 502         }
 503
 504         /**
 505          * This lets a user set restrictions for log items
 506          */
 507         private function showLogItems() {
 508                 global $wgOut, $wgUser, $wgMessageCache, $wgLang;
 509                 $UserAllowed = true;
 510
 511                 $wgOut->addWikiMsg( 'logdelete-selected', $wgLang->formatNum( count($this->events) ) );
 512
 513                 $bitfields = 0;
 514                 $wgOut->addHTML( "<ul>" );
 515
 516                 $where = $logRows = array();
 517                 $dbr = wfGetDB( DB_MASTER );
 518                 // Run through and pull all our data in one query
 519                 $logItems = 0;
 520                 foreach( $this->events as $logid ) {
 521                         $where[] = intval($logid);
 522                 }
 523                 list($log,$logtype) = explode( '/',$this->page->getDBKey(), 2 );
 524                 $result = $dbr->select( 'logging', '*',
 525                         array(
 526                                 'log_type' => $logtype,
 527                                 'log_id' => $where ),
 528                         __METHOD__ );
 529                 while( $row = $dbr->fetchObject( $result ) ) {
 530                         $logRows[$row->log_id] = $row;
 531                 }
 532                 $wgMessageCache->loadAllMessages();
 533                 foreach( $this->events as $logid ) {
 534                         // Don't hide from oversight log!!!
 535                         if( !isset( $logRows[$logid] ) || $logRows[$logid]->log_type=='suppress' ) {
 536                                 continue;
 537                         } else if( !LogEventsList::userCan( $logRows[$logid],Revision::DELETED_RESTRICTED) ) {
 538                         // If an event is hidden from sysops
 539                                 if( !$this->wasPosted ) {
 540                                         $wgOut->permissionRequired( 'suppressrevision' );
 541                                         return;
 542                                 }
 543                                 $UserAllowed = false;
 544                         }
 545                         $logItems++;
 546                         $wgOut->addHTML( $this->logLine( $logRows[$logid] ) );
 547                         $bitfields |= $logRows[$logid]->log_deleted;
 548                 }
 549                 if( !$logItems ) {
 550                         $wgOut->showErrorPage( 'revdelete-nologid-title', 'revdelete-nologid-text' );
 551                         return;
 552                 }
 553
 554                 $wgOut->addHTML( "</ul>" );
 555                 // Explanation text
 556                 $this->addUsageText();
 557                 // Normal sysops can always see what they did, but can't always change it
 558                 if( !$UserAllowed ) return;
 559
 560                 $items = array(
 561                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 562                         Xml::submitButton( wfMsg( 'revdelete-submit' ) ) );
 563                 $hidden = array(
 564                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 565                         Xml::hidden( 'target', $this->page->getPrefixedDBKey() ),
 566                         Xml::hidden( 'page', $this->contextPage ? $this->contextPage->getPrefixedDBKey() : '' ),
 567                         Xml::hidden( 'type', $this->deleteKey ),
 568                         Xml::hidden( 'logid', implode(',',$this->logids) )
 569                 );
 570
 571                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
 572                 $wgOut->addHTML(
 573                         Xml::openElement( 'form', array( 'method' => 'post',
 574                                 'action' => $special->getLocalUrl( 'action=submit' ), 'id' => 'mw-revdel-form-logs' ) ) .
 575                         Xml::fieldset( wfMsg( 'revdelete-legend' ) )
 576                 );
 577
 578                 $wgOut->addHTML( $this->buildCheckBoxes( $bitfields ) );
 579                 foreach( $items as $item ) {
 580                         $wgOut->addHTML( "<p>$item</p>" );
 581                 }
 582                 foreach( $hidden as $item ) {
 583                         $wgOut->addHTML( $item );
 584                 }
 585
 586                 $wgOut->addHTML(
 587                         Xml::closeElement( 'fieldset' ) .
 588                         Xml::closeElement( 'form' ) . "\n"
 589                 );
 590         }
 591
 592         private function addUsageText() {
 593                 global $wgOut, $wgUser;
 594                 $wgOut->addWikiMsg( 'revdelete-text' );
 595                 if( $wgUser->isAllowed( 'suppressrevision' ) ) {
 596                         $wgOut->addWikiMsg( 'revdelete-suppress-text' );
 597                 }
 598         }
 599
 600         /**
 601         * @param int $bitfields, aggregate bitfield of all the bitfields
 602         * @returns string HTML
 603         */
 604         private function buildCheckBoxes( $bitfields ) {
 605                 $html = '';
 606                 // FIXME: all items checked for just one rev are checked, even if not set for the others
 607                 foreach( $this->checks as $item ) {
 608                         list( $message, $name, $field ) = $item;
 609                         $line = Xml::tags( 'div', null, Xml::checkLabel( wfMsg($message), $name, $name,
 610                                 $bitfields & $field ) );
 611                         if( $field == Revision::DELETED_RESTRICTED ) $line = "<b>$line</b>";
 612                         $html .= $line;
 613                 }
 614                 return $html;
 615         }
 616
 617         /**
 618          * @param Revision $rev
 619          * @returns string
 620          */
 621         private function historyLine( $rev ) {
 622                 global $wgLang, $wgUser;
 623
 624                 $date = $wgLang->timeanddate( $rev->getTimestamp() );
 625                 $difflink = $del = '';
 626                 // Live revisions
 627                 if( $this->deleteKey == 'oldid' ) {
 628                         $tokenParams = '&unhide=1&token='.urlencode( $wgUser->editToken( $rev->getId() ) );
 629                         $revlink = $this->skin->makeLinkObj( $this->page, $date, 'oldid='.$rev->getId() . $tokenParams );
 630                         $difflink = '(' . $this->skin->makeKnownLinkObj( $this->page, wfMsgHtml('diff'),
 631                                 'diff=' . $rev->getId() . '&oldid=prev' . $tokenParams ) . ')';
 632                 // Archived revisions
 633                 } else {
 634                         $undelete = SpecialPage::getTitleFor( 'Undelete' );
 635                         $target = $this->page->getPrefixedText();
 636                         $revlink = $this->skin->makeLinkObj( $undelete, $date,
 637                                 "target=$target&timestamp=" . $rev->getTimestamp() );
 638                         $difflink = '(' . $this->skin->makeKnownLinkObj( $undelete, wfMsgHtml('diff'),
 639                                 "target=$target&diff=prev&timestamp=" . $rev->getTimestamp() ) . ')';
 640                 }
 641                 // Check permissions; items may be "suppressed"
 642                 if( $rev->isDeleted(Revision::DELETED_TEXT) ) {
 643                         $revlink = '<span class="history-deleted">'.$revlink.'</span>';
 644                         $del = ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 645                         if( !$rev->userCan(Revision::DELETED_TEXT) ) {
 646                                 $revlink = '<span class="history-deleted">'.$date.'</span>';
 647                                 $difflink = '(' . wfMsgHtml('diff') . ')';
 648                         }
 649                 }
 650                 $userlink = $this->skin->revUserLink( $rev );
 651                 $comment = $this->skin->revComment( $rev );
 652
 653                 return "<li>$difflink $revlink $userlink $comment{$del}</li>";
 654         }
 655
 656         /**
 657          * @param File $file
 658          * @returns string
 659          */
 660         private function fileLine( $file ) {
 661                 global $wgLang, $wgTitle;
 662
 663                 $target = $this->page->getPrefixedText();
 664                 $date = $wgLang->timeanddate( $file->getTimestamp(), true  );
 665
 666                 $del = '';
 667                 # Hidden files...
 668                 if( $file->isDeleted(File::DELETED_FILE) ) {
 669                         $del = ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 670                         if( !$file->userCan(File::DELETED_FILE) ) {
 671                                 $pageLink = $date;
 672                         } else {
 673                                 $pageLink = $this->skin->makeKnownLinkObj( $wgTitle, $date,
 674                                         "target=$target&file=$file->sha1.".$file->getExtension() );
 675                         }
 676                         $pageLink = '<span class="history-deleted">' . $pageLink . '</span>';
 677                 # Regular files...
 678                 } else {
 679                         $url = $file->getUrlRel();
 680                         $pageLink = "<a href=\"{$url}\">{$date}</a>";
 681                 }
 682
 683                 $data = wfMsg( 'widthheight',
 684                                         $wgLang->formatNum( $file->getWidth() ),
 685                                         $wgLang->formatNum( $file->getHeight() ) ) .
 686                         ' (' . wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $file->getSize() ) ) . ')';
 687                 $data = htmlspecialchars( $data );
 688
 689                 return "<li>$pageLink ".$this->fileUserTools( $file )." $data ".
 690                         $this->fileComment( $file )."$del</li>";
 691         }
 692
 693         /**
 694          * @param ArchivedFile $file
 695          * @returns string
 696          */
 697         private function archivedfileLine( $file ) {
 698                 global $wgLang;
 699
 700                 $target = $this->page->getPrefixedText();
 701                 $date = $wgLang->timeanddate( $file->getTimestamp(), true  );
 702
 703                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 704                 $pageLink = $this->skin->makeKnownLinkObj( $undelete, $date,
 705                         "target=$target&file={$file->getKey()}" );
 706
 707                 $del = '';
 708                 if( $file->isDeleted(File::DELETED_FILE) ) {
 709                         $del = ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 710                 }
 711
 712                 $data = wfMsg( 'widthheight',
 713                                         $wgLang->formatNum( $file->getWidth() ),
 714                                         $wgLang->formatNum( $file->getHeight() ) ) .
 715                         ' (' . wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $file->getSize() ) ) . ')';
 716                 $data = htmlspecialchars( $data );
 717
 718                 return "<li>$pageLink ".$this->fileUserTools( $file )." $data ".
 719                         $this->fileComment( $file )."$del</li>";
 720         }
 721
 722         /**
 723          * @param Array $row row
 724          * @returns string
 725          */
 726         private function logLine( $row ) {
 727                 global $wgLang;
 728
 729                 $date = $wgLang->timeanddate( $row->log_timestamp );
 730                 $paramArray = LogPage::extractParams( $row->log_params );
 731                 $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 732
 733                 $logtitle = SpecialPage::getTitleFor( 'Log' );
 734                 $loglink = $this->skin->makeKnownLinkObj( $logtitle, wfMsgHtml( 'log' ),
 735                         wfArrayToCGI( array( 'page' => $title->getPrefixedUrl() ) ) );
 736                 // Action text
 737                 if( !LogEventsList::userCan($row,LogPage::DELETED_ACTION) ) {
 738                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 739                 } else {
 740                         $action = LogPage::actionText( $row->log_type, $row->log_action, $title,
 741                                 $this->skin, $paramArray, true, true );
 742                         if( $row->log_deleted & LogPage::DELETED_ACTION )
 743                                 $action = '<span class="history-deleted">' . $action . '</span>';
 744                 }
 745                 // User links
 746                 $userLink = $this->skin->userLink( $row->log_user, User::WhoIs($row->log_user) );
 747                 if( LogEventsList::isDeleted($row,LogPage::DELETED_USER) ) {
 748                         $userLink = '<span class="history-deleted">' . $userLink . '</span>';
 749                 }
 750                 // Comment
 751                 $comment = $wgLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
 752                 if( LogEventsList::isDeleted($row,LogPage::DELETED_COMMENT) ) {
 753                         $comment = '<span class="history-deleted">' . $comment . '</span>';
 754                 }
 755                 return "<li>($loglink) $date $userLink $action $comment</li>";
 756         }
 757
 758         /**
 759          * Generate a user tool link cluster if the current user is allowed to view it
 760          * @param ArchivedFile $file
 761          * @return string HTML
 762          */
 763         private function fileUserTools( $file ) {
 764                 if( $file->userCan( Revision::DELETED_USER ) ) {
 765                         $link = $this->skin->userLink( $file->user, $file->user_text ) .
 766                                 $this->skin->userToolLinks( $file->user, $file->user_text );
 767                 } else {
 768                         $link = wfMsgHtml( 'rev-deleted-user' );
 769                 }
 770                 if( $file->isDeleted( Revision::DELETED_USER ) ) {
 771                         return '<span class="history-deleted">' . $link . '</span>';
 772                 }
 773                 return $link;
 774         }
 775
 776         /**
 777          * Wrap and format the given file's comment block, if the current
 778          * user is allowed to view it.
 779          *
 780          * @param ArchivedFile $file
 781          * @return string HTML
 782          */
 783         private function fileComment( $file ) {
 784                 if( $file->userCan( File::DELETED_COMMENT ) ) {
 785                         $block = $this->skin->commentBlock( $file->description );
 786                 } else {
 787                         $block = ' ' . wfMsgHtml( 'rev-deleted-comment' );
 788                 }
 789                 if( $file->isDeleted( File::DELETED_COMMENT ) ) {
 790                         return "<span class=\"history-deleted\">$block</span>";
 791                 }
 792                 return $block;
 793         }
 794
 795         /**
 796          * @param WebRequest $request
 797          */
 798         private function submit( $request ) {
 799                 global $wgUser, $wgOut;
 800                 # Check edit token on submission
 801                 if( $this->wasPosted && !$wgUser->matchEditToken( $request->getVal('wpEditToken') ) ) {
 802                         $wgOut->addWikiMsg( 'sessionfailure' );
 803                         return false;
 804                 }
 805                 $bitfield = $this->extractBitfield( $request );
 806                 $comment = $request->getText( 'wpReason' );
 807                 # Can the user set this field?
 808                 if( $bitfield & Revision::DELETED_RESTRICTED && !$wgUser->isAllowed('suppressrevision') ) {
 809                         $wgOut->permissionRequired( 'suppressrevision' );
 810                         return false;
 811                 }
 812                 # If the save went through, go to success message. Otherwise
 813                 # bounce back to form...
 814                 if( $this->save( $bitfield, $comment, $this->page ) ) {
 815                         $this->success();
 816                 } else if( $request->getCheck( 'oldid' ) || $request->getCheck( 'artimestamp' ) ) {
 817                         return $this->showRevs();
 818                 } else if( $request->getCheck( 'logid' ) ) {
 819                         return $this->showLogs();
 820                 } else if( $request->getCheck( 'oldimage' ) || $request->getCheck( 'fileid' ) ) {
 821                         return $this->showImages();
 822                 }
 823         }
 824
 825         private function success() {
 826                 global $wgOut;
 827
 828                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 829
 830                 $wrap = '<span class="success">$1</span>';
 831
 832                 if( $this->deleteKey == 'logid' ) {
 833                         $wgOut->wrapWikiMsg( $wrap, 'logdelete-success' );
 834                         $this->showLogItems();
 835                 } else if( $this->deleteKey == 'oldid' || $this->deleteKey == 'artimestamp' ) {
 836                                 $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 837                         $this->showRevs();
 838                 } else if( $this->deleteKey == 'fileid' ) {
 839                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 840                         $this->showImages();
 841                 } else if( $this->deleteKey == 'oldimage' ) {
 842                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 843                         $this->showImages();
 844                 }
 845         }
 846
 847         /**
 848          * Put together a rev_deleted bitfield from the submitted checkboxes
 849          * @param WebRequest $request
 850          * @return int
 851          */
 852         private function extractBitfield( $request ) {
 853                 $bitfield = 0;
 854                 foreach( $this->checks as $item ) {
 855                         list( /* message */ , $name, $field ) = $item;
 856                         if( $request->getCheck( $name ) ) {
 857                                 $bitfield |= $field;
 858                         }
 859                 }
 860                 return $bitfield;
 861         }
 862
 863         private function save( $bitfield, $reason, $title ) {
 864                 $dbw = wfGetDB( DB_MASTER );
 865                 // Don't allow simply locking the interface for no reason
 866                 if( $bitfield == Revision::DELETED_RESTRICTED ) {
 867                         $bitfield = 0;
 868                 }
 869                 $deleter = new RevisionDeleter( $dbw );
 870                 // By this point, only one of the below should be set
 871                 if( isset($this->revisions) ) {
 872                         return $deleter->setRevVisibility( $title, $this->revisions, $bitfield, $reason );
 873                 } else if( isset($this->archrevs) ) {
 874                         return $deleter->setArchiveVisibility( $title, $this->archrevs, $bitfield, $reason );
 875                 } else if( isset($this->ofiles) ) {
 876                         return $deleter->setOldImgVisibility( $title, $this->ofiles, $bitfield, $reason );
 877                 } else if( isset($this->afiles) ) {
 878                         return $deleter->setArchFileVisibility( $title, $this->afiles, $bitfield, $reason );
 879                 } else if( isset($this->events) ) {
 880                         return $deleter->setEventVisibility( $title, $this->events, $bitfield, $reason );
 881                 }
 882         }
 883 }
 884
 885 /**
 886  * Implements the actions for Revision Deletion.
 887  * @ingroup SpecialPage
 888  */
 889 class RevisionDeleter {
 890         function __construct( $db ) {
 891                 $this->dbw = $db;
 892         }
 893
 894         /**
 895          * @param $title, the page these events apply to
 896          * @param array $items list of revision ID numbers
 897          * @param int $bitfield new rev_deleted value
 898          * @param string $comment Comment for log records
 899          */
 900         function setRevVisibility( $title, $items, $bitfield, $comment ) {
 901                 global $wgOut;
 902
 903                 $userAllowedAll = $success = true;
 904                 $revIDs = array();
 905                 $revCount = 0;
 906                 // Run through and pull all our data in one query
 907                 foreach( $items as $revid ) {
 908                         $where[] = intval($revid);
 909                 }
 910                 $result = $this->dbw->select( 'revision', '*',
 911                         array(
 912                                 'rev_page' => $title->getArticleID(),
 913                                 'rev_id' => $where ),
 914                         __METHOD__ );
 915                 while( $row = $this->dbw->fetchObject( $result ) ) {
 916                         $revObjs[$row->rev_id] = new Revision( $row );
 917                 }
 918                 // To work!
 919                 foreach( $items as $revid ) {
 920                         if( !isset($revObjs[$revid]) || $revObjs[$revid]->isCurrent() ) {
 921                                 $success = false;
 922                                 continue; // Must exist
 923                         } else if( !$revObjs[$revid]->userCan(Revision::DELETED_RESTRICTED) ) {
 924                         $userAllowedAll=false;
 925                                 continue;
 926                         }
 927                         // For logging, maintain a count of revisions
 928                         if( $revObjs[$revid]->mDeleted != $bitfield ) {
 929                                 $revCount++;
 930                                 $revIDs[]=$revid;
 931
 932                                 $this->updateRevision( $revObjs[$revid], $bitfield );
 933                                 $this->updateRecentChangesEdits( $revObjs[$revid], $bitfield, false );
 934                         }
 935                 }
 936                 // Clear caches...
 937                 // Don't log or touch if nothing changed
 938                 if( $revCount > 0 ) {
 939                         $this->updateLog( $title, $revCount, $bitfield, $revObjs[$revid]->mDeleted,
 940                                 $comment, $title, 'oldid', $revIDs );
 941                         $this->updatePage( $title );
 942                 }
 943                 // Where all revs allowed to be set?
 944                 if( !$userAllowedAll ) {
 945                         //FIXME: still might be confusing???
 946                         $wgOut->permissionRequired( 'suppressrevision' );
 947                         return false;
 948                 }
 949
 950                 return $success;
 951         }
 952
 953          /**
 954          * @param $title, the page these events apply to
 955          * @param array $items list of revision ID numbers
 956          * @param int $bitfield new rev_deleted value
 957          * @param string $comment Comment for log records
 958          */
 959         function setArchiveVisibility( $title, $items, $bitfield, $comment ) {
 960                 global $wgOut;
 961
 962                 $userAllowedAll = $success = true;
 963                 $count = 0;
 964                 $Id_set = array();
 965                 // Run through and pull all our data in one query
 966                 foreach( $items as $timestamp ) {
 967                         $where[] = $this->dbw->timestamp( $timestamp );
 968                 }
 969                 $result = $this->dbw->select( 'archive', '*',
 970                         array(
 971                                 'ar_namespace' => $title->getNamespace(),
 972                                 'ar_title' => $title->getDBKey(),
 973                                 'ar_timestamp' => $where ),
 974                         __METHOD__ );
 975                 while( $row = $this->dbw->fetchObject( $result ) ) {
 976                         $timestamp = wfTimestamp( TS_MW, $row->ar_timestamp );
 977                         $revObjs[$timestamp] = new Revision( array(
 978                                 'page'       => $title->getArticleId(),
 979                                 'id'         => $row->ar_rev_id,
 980                                 'text'       => $row->ar_text_id,
 981                                 'comment'    => $row->ar_comment,
 982                                 'user'       => $row->ar_user,
 983                                 'user_text'  => $row->ar_user_text,
 984                                 'timestamp'  => $timestamp,
 985                                 'minor_edit' => $row->ar_minor_edit,
 986                                 'text_id'    => $row->ar_text_id,
 987                                 'deleted'    => $row->ar_deleted,
 988                                 'len'        => $row->ar_len) );
 989                 }
 990                 // To work!
 991                 foreach( $items as $timestamp ) {
 992                         // This will only select the first revision with this timestamp.
 993                         // Since they are all selected/deleted at once, we can just check the
 994                         // permissions of one. UPDATE is done via timestamp, so all revs are set.
 995                         if( !is_object($revObjs[$timestamp]) ) {
 996                                 $success = false;
 997                                 continue; // Must exist
 998                         } else if( !$revObjs[$timestamp]->userCan(Revision::DELETED_RESTRICTED) ) {
 999                         $userAllowedAll=false;
1000                                 continue;
1001                         }
1002                         // Which revisions did we change anything about?
1003                         if( $revObjs[$timestamp]->mDeleted != $bitfield ) {
1004                            $Id_set[]=$timestamp;
1005                            $count++;
1006
1007                            $this->updateArchive( $revObjs[$timestamp], $title, $bitfield );
1008                         }
1009                 }
1010                 // For logging, maintain a count of revisions
1011                 if( $count > 0 ) {
1012                         $this->updateLog( $title, $count, $bitfield, $revObjs[$timestamp]->mDeleted,
1013                                 $comment, $title, 'artimestamp', $Id_set );
1014                 }
1015                 // Where all revs allowed to be set?
1016                 if( !$userAllowedAll ) {
1017                         $wgOut->permissionRequired( 'suppressrevision' );
1018                         return false;
1019                 }
1020
1021                 return $success;
1022         }
1023
1024          /**
1025          * @param $title, the page these events apply to
1026          * @param array $items list of revision ID numbers
1027          * @param int $bitfield new rev_deleted value
1028          * @param string $comment Comment for log records
1029          */
1030         function setOldImgVisibility( $title, $items, $bitfield, $comment ) {
1031                 global $wgOut;
1032
1033                 $userAllowedAll = $success = true;
1034                 $count = 0;
1035                 $set = array();
1036                 // Run through and pull all our data in one query
1037                 foreach( $items as $timestamp ) {
1038                         $where[] = $timestamp.'!'.$title->getDBKey();
1039                 }
1040                 $result = $this->dbw->select( 'oldimage', '*',
1041                         array(
1042                                 'oi_name' => $title->getDBKey(),
1043                                 'oi_archive_name' => $where ),
1044                         __METHOD__ );
1045                 while( $row = $this->dbw->fetchObject( $result ) ) {
1046                         $filesObjs[$row->oi_archive_name] = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
1047                         $filesObjs[$row->oi_archive_name]->user = $row->oi_user;
1048                         $filesObjs[$row->oi_archive_name]->user_text = $row->oi_user_text;
1049                 }
1050                 // To work!
1051                 foreach( $items as $timestamp ) {
1052                         $archivename = $timestamp.'!'.$title->getDBKey();
1053                         if( !isset($filesObjs[$archivename]) ) {
1054                                 $success = false;
1055                                 continue; // Must exist
1056                         } else if( !$filesObjs[$archivename]->userCan(File::DELETED_RESTRICTED) ) {
1057                         $userAllowedAll=false;
1058                                 continue;
1059                         }
1060
1061                         $transaction = true;
1062                         // Which revisions did we change anything about?
1063                         if( $filesObjs[$archivename]->deleted != $bitfield ) {
1064                                 $count++;
1065
1066                                 $this->dbw->begin();
1067                                 $this->updateOldFiles( $filesObjs[$archivename], $bitfield );
1068                                 // If this image is currently hidden...
1069                                 if( $filesObjs[$archivename]->deleted & File::DELETED_FILE ) {
1070                                         if( $bitfield & File::DELETED_FILE ) {
1071                                                 # Leave it alone if we are not changing this...
1072                                                 $set[]=$timestamp;
1073                                                 $transaction = true;
1074                                         } else {
1075                                                 # We are moving this out
1076                                                 $transaction = $this->makeOldImagePublic( $filesObjs[$archivename] );
1077                                                 $set[]=$transaction;
1078                                         }
1079                                 // Is it just now becoming hidden?
1080                                 } else if( $bitfield & File::DELETED_FILE ) {
1081                                         $transaction = $this->makeOldImagePrivate( $filesObjs[$archivename] );
1082                                         $set[]=$transaction;
1083                                 } else {
1084                                         $set[]=$timestamp;
1085                                 }
1086                                 // If our file operations fail, then revert back the db
1087                                 if( $transaction==false ) {
1088                                         $this->dbw->rollback();
1089                                         return false;
1090                                 }
1091                                 $this->dbw->commit();
1092                         }
1093                 }
1094
1095                 // Log if something was changed
1096                 if( $count > 0 ) {
1097                         $this->updateLog( $title, $count, $bitfield, $filesObjs[$archivename]->deleted,
1098                                 $comment, $title, 'oldimage', $set );
1099                         # Purge page/history
1100                         $file = wfLocalFile( $title );
1101                         $file->purgeCache();
1102                         $file->purgeHistory();
1103                         # Invalidate cache for all pages using this file
1104                         $update = new HTMLCacheUpdate( $title, 'imagelinks' );
1105                         $update->doUpdate();
1106                 }
1107                 // Where all revs allowed to be set?
1108                 if( !$userAllowedAll ) {
1109                         $wgOut->permissionRequired( 'suppressrevision' );
1110                         return false;
1111                 }
1112
1113                 return $success;
1114         }
1115
1116          /**
1117          * @param $title, the page these events apply to
1118          * @param array $items list of revision ID numbers
1119          * @param int $bitfield new rev_deleted value
1120          * @param string $comment Comment for log records
1121          */
1122         function setArchFileVisibility( $title, $items, $bitfield, $comment ) {
1123                 global $wgOut;
1124
1125                 $userAllowedAll = $success = true;
1126                 $count = 0;
1127                 $Id_set = array();
1128
1129                 // Run through and pull all our data in one query
1130                 foreach( $items as $id ) {
1131                         $where[] = intval($id);
1132                 }
1133                 $result = $this->dbw->select( 'filearchive', '*',
1134                         array( 'fa_name' => $title->getDBKey(),
1135                                 'fa_id' => $where ),
1136                         __METHOD__ );
1137                 while( $row = $this->dbw->fetchObject( $result ) ) {
1138                         $filesObjs[$row->fa_id] = ArchivedFile::newFromRow( $row );
1139                 }
1140                 // To work!
1141                 foreach( $items as $fileid ) {
1142                         if( !isset($filesObjs[$fileid]) ) {
1143                                 $success = false;
1144                                 continue; // Must exist
1145                         } else if( !$filesObjs[$fileid]->userCan(File::DELETED_RESTRICTED) ) {
1146                         $userAllowedAll=false;
1147                                 continue;
1148                         }
1149                         // Which revisions did we change anything about?
1150                         if( $filesObjs[$fileid]->deleted != $bitfield ) {
1151                            $Id_set[]=$fileid;
1152                            $count++;
1153
1154                            $this->updateArchFiles( $filesObjs[$fileid], $bitfield );
1155                         }
1156                 }
1157                 // Log if something was changed
1158                 if( $count > 0 ) {
1159                         $this->updateLog( $title, $count, $bitfield, $comment,
1160                                 $filesObjs[$fileid]->deleted, $title, 'fileid', $Id_set );
1161                 }
1162                 // Where all revs allowed to be set?
1163                 if( !$userAllowedAll ) {
1164                         $wgOut->permissionRequired( 'suppressrevision' );
1165                         return false;
1166                 }
1167
1168                 return $success;
1169         }
1170
1171         /**
1172          * @param $title, the log page these events apply to
1173          * @param array $items list of log ID numbers
1174          * @param int $bitfield new log_deleted value
1175          * @param string $comment Comment for log records
1176          */
1177         function setEventVisibility( $title, $items, $bitfield, $comment ) {
1178                 global $wgOut;
1179
1180                 $userAllowedAll = $success = true;
1181                 $count = 0;
1182                 $log_Ids = array();
1183
1184                 // Run through and pull all our data in one query
1185                 foreach( $items as $logid ) {
1186                         $where[] = intval($logid);
1187                 }
1188                 list($log,$logtype) = explode( '/',$title->getDBKey(), 2 );
1189                 $result = $this->dbw->select( 'logging', '*',
1190                         array(
1191                                 'log_type' => $logtype,
1192                                 'log_id' => $where ),
1193                         __METHOD__ );
1194                 while( $row = $this->dbw->fetchObject( $result ) ) {
1195                         $logRows[$row->log_id] = $row;
1196                 }
1197                 // To work!
1198                 foreach( $items as $logid ) {
1199                         if( !isset($logRows[$logid]) ) {
1200                                 $success = false;
1201                                 continue; // Must exist
1202                         } else if( !LogEventsList::userCan($logRows[$logid], LogPage::DELETED_RESTRICTED)
1203                                  || $logRows[$logid]->log_type == 'suppress' ) {
1204                         // Don't hide from oversight log!!!
1205                         $userAllowedAll=false;
1206                         continue;
1207                         }
1208                         // Which logs did we change anything about?
1209                         if( $logRows[$logid]->log_deleted != $bitfield ) {
1210                                 $log_Ids[]=$logid;
1211                                 $count++;
1212
1213                                 $this->updateLogs( $logRows[$logid], $bitfield );
1214                                 $this->updateRecentChangesLog( $logRows[$logid], $bitfield, true );
1215                         }
1216                 }
1217                 // Don't log or touch if nothing changed
1218                 if( $count > 0 ) {
1219                         $this->updateLog( $title, $count, $bitfield, $logRows[$logid]->log_deleted,
1220                                 $comment, $title, 'logid', $log_Ids );
1221                 }
1222                 // Were all revs allowed to be set?
1223                 if( !$userAllowedAll ) {
1224                         $wgOut->permissionRequired( 'suppressrevision' );
1225                         return false;
1226                 }
1227
1228                 return $success;
1229         }
1230
1231         /**
1232          * Moves an image to a safe private location
1233          * Caller is responsible for clearing caches
1234          * @param File $oimage
1235          * @returns mixed, timestamp string on success, false on failure
1236          */
1237         function makeOldImagePrivate( $oimage ) {
1238                 $transaction = new FSTransaction();
1239                 if( !FileStore::lock() ) {
1240                         wfDebug( __METHOD__.": failed to acquire file store lock, aborting\n" );
1241                         return false;
1242                 }
1243                 $oldpath = $oimage->getArchivePath() . DIRECTORY_SEPARATOR . $oimage->archive_name;
1244                 // Dupe the file into the file store
1245                 if( file_exists( $oldpath ) ) {
1246                         // Is our directory configured?
1247                         if( $store = FileStore::get( 'deleted' ) ) {
1248                                 if( !$oimage->sha1 ) {
1249                                         $oimage->upgradeRow(); // sha1 may be missing
1250                                 }
1251                                 $key = $oimage->sha1 . '.' . $oimage->getExtension();
1252                                 $transaction->add( $store->insert( $key, $oldpath, FileStore::DELETE_ORIGINAL ) );
1253                         } else {
1254                                 $group = null;
1255                                 $key = null;
1256                                 $transaction = false; // Return an error and do nothing
1257                         }
1258                 } else {
1259                         wfDebug( __METHOD__." deleting already-missing '$oldpath'; moving on to database\n" );
1260                         $group = null;
1261                         $key = '';
1262                         $transaction = new FSTransaction(); // empty
1263                 }
1264
1265                 if( $transaction === false ) {
1266                         // Fail to restore?
1267                         wfDebug( __METHOD__.": import to file store failed, aborting\n" );
1268                         throw new MWException( "Could not archive and delete file $oldpath" );
1269                         return false;
1270                 }
1271
1272                 wfDebug( __METHOD__.": set db items, applying file transactions\n" );
1273                 $transaction->commit();
1274                 FileStore::unlock();
1275
1276                 $m = explode('!',$oimage->archive_name,2);
1277                 $timestamp = $m[0];
1278
1279                 return $timestamp;
1280         }
1281
1282         /**
1283          * Moves an image from a safe private location
1284          * Caller is responsible for clearing caches
1285          * @param File $oimage
1286          * @returns mixed, string timestamp on success, false on failure
1287          */
1288         function makeOldImagePublic( $oimage ) {
1289                 $transaction = new FSTransaction();
1290                 if( !FileStore::lock() ) {
1291                         wfDebug( __METHOD__." could not acquire filestore lock\n" );
1292                         return false;
1293                 }
1294
1295                 $store = FileStore::get( 'deleted' );
1296                 if( !$store ) {
1297                         wfDebug( __METHOD__.": skipping row with no file.\n" );
1298                         return false;
1299                 }
1300
1301                 $key = $oimage->sha1.'.'.$oimage->getExtension();
1302                 $destDir = $oimage->getArchivePath();
1303                 if( !is_dir( $destDir ) ) {
1304                         wfMkdirParents( $destDir );
1305                 }
1306                 $destPath = $destDir . DIRECTORY_SEPARATOR . $oimage->archive_name;
1307                 // Check if any other stored revisions use this file;
1308                 // if so, we shouldn't remove the file from the hidden
1309                 // archives so they will still work. Check hidden files first.
1310                 $useCount = $this->dbw->selectField( 'oldimage', '1',
1311                         array( 'oi_sha1' => $oimage->sha1,
1312                                 'oi_deleted & '.File::DELETED_FILE => File::DELETED_FILE ),
1313                         __METHOD__, array( 'FOR UPDATE' ) );
1314                 // Check the rest of the deleted archives too.
1315                 // (these are the ones that don't show in the image history)
1316                 if( !$useCount ) {
1317                         $useCount = $this->dbw->selectField( 'filearchive', '1',
1318                                 array( 'fa_storage_group' => 'deleted', 'fa_storage_key' => $key ),
1319                                 __METHOD__, array( 'FOR UPDATE' ) );
1320                 }
1321
1322                 if( $useCount == 0 ) {
1323                         wfDebug( __METHOD__.": nothing else using {$oimage->sha1}, will deleting after\n" );
1324                         $flags = FileStore::DELETE_ORIGINAL;
1325                 } else {
1326                         $flags = 0;
1327                 }
1328                 $transaction->add( $store->export( $key, $destPath, $flags ) );
1329
1330                 wfDebug( __METHOD__.": set db items, applying file transactions\n" );
1331                 $transaction->commit();
1332                 FileStore::unlock();
1333
1334                 $m = explode('!',$oimage->archive_name,2);
1335                 $timestamp = $m[0];
1336
1337                 return $timestamp;
1338         }
1339
1340         /**
1341          * Update the revision's rev_deleted field
1342          * @param Revision $rev
1343          * @param int $bitfield new rev_deleted bitfield value
1344          */
1345         function updateRevision( $rev, $bitfield ) {
1346                 $this->dbw->update( 'revision',
1347                         array( 'rev_deleted' => $bitfield ),
1348                         array( 'rev_id' => $rev->getId(),
1349                                 'rev_page' => $rev->getPage() ),
1350                         __METHOD__ );
1351         }
1352
1353         /**
1354          * Update the revision's rev_deleted field
1355          * @param Revision $rev
1356          * @param Title $title
1357          * @param int $bitfield new rev_deleted bitfield value
1358          */
1359         function updateArchive( $rev, $title, $bitfield ) {
1360                 $this->dbw->update( 'archive',
1361                         array( 'ar_deleted' => $bitfield ),
1362                         array( 'ar_namespace' => $title->getNamespace(),
1363                                 'ar_title'     => $title->getDBKey(),
1364                                 'ar_timestamp' => $this->dbw->timestamp( $rev->getTimestamp() ),
1365                                 'ar_rev_id' => $rev->getId() ),
1366                         __METHOD__ );
1367         }
1368
1369         /**
1370          * Update the images's oi_deleted field
1371          * @param File $file
1372          * @param int $bitfield new rev_deleted bitfield value
1373          */
1374         function updateOldFiles( $file, $bitfield ) {
1375                 $this->dbw->update( 'oldimage',
1376                         array( 'oi_deleted' => $bitfield ),
1377                         array( 'oi_name' => $file->getName(),
1378                                 'oi_timestamp' => $this->dbw->timestamp( $file->getTimestamp() ) ),
1379                         __METHOD__ );
1380         }
1381
1382         /**
1383          * Update the images's fa_deleted field
1384          * @param ArchivedFile $file
1385          * @param int $bitfield new rev_deleted bitfield value
1386          */
1387         function updateArchFiles( $file, $bitfield ) {
1388                 $this->dbw->update( 'filearchive',
1389                         array( 'fa_deleted' => $bitfield ),
1390                         array( 'fa_id' => $file->getId() ),
1391                         __METHOD__ );
1392         }
1393
1394         /**
1395          * Update the logging log_deleted field
1396          * @param Row $row
1397          * @param int $bitfield new rev_deleted bitfield value
1398          */
1399         function updateLogs( $row, $bitfield ) {
1400                 $this->dbw->update( 'logging',
1401                         array( 'log_deleted' => $bitfield ),
1402                         array( 'log_id' => $row->log_id ),
1403                         __METHOD__ );
1404         }
1405
1406         /**
1407          * Update the revision's recentchanges record if fields have been hidden
1408          * @param Revision $rev
1409          * @param int $bitfield new rev_deleted bitfield value
1410          */
1411         function updateRecentChangesEdits( $rev, $bitfield ) {
1412                 $this->dbw->update( 'recentchanges',
1413                         array( 'rc_deleted' => $bitfield,
1414                                    'rc_patrolled' => 1 ),
1415                         array( 'rc_this_oldid' => $rev->getId(),
1416                                 'rc_timestamp' => $this->dbw->timestamp( $rev->getTimestamp() ) ),
1417                         __METHOD__ );
1418         }
1419
1420         /**
1421          * Update the revision's recentchanges record if fields have been hidden
1422          * @param Row $row
1423          * @param int $bitfield new rev_deleted bitfield value
1424          */
1425         function updateRecentChangesLog( $row, $bitfield ) {
1426                 $this->dbw->update( 'recentchanges',
1427                         array( 'rc_deleted' => $bitfield,
1428                                    'rc_patrolled' => 1 ),
1429                         array( 'rc_logid' => $row->log_id,
1430                                 'rc_timestamp' => $row->log_timestamp ),
1431                         __METHOD__ );
1432         }
1433
1434         /**
1435          * Touch the page's cache invalidation timestamp; this forces cached
1436          * history views to refresh, so any newly hidden or shown fields will
1437          * update properly.
1438          * @param Title $title
1439          */
1440         function updatePage( $title ) {
1441                 $title->invalidateCache();
1442                 $title->purgeSquid();
1443                 $title->touchLinks();
1444                 // Extensions that require referencing previous revisions may need this
1445                 wfRunHooks( 'ArticleRevisionVisiblitySet', array( &$title ) );
1446         }
1447
1448         /**
1449          * Checks for a change in the bitfield for a certain option and updates the
1450          * provided array accordingly.
1451          *
1452          * @param String $desc Description to add to the array if the option was
1453          * enabled / disabled.
1454          * @param int $field The bitmask describing the single option.
1455          * @param int $diff The xor of the old and new bitfields.
1456          * @param array $arr The array to update.
1457          */
1458         function checkItem( $desc, $field, $diff, $new, &$arr ) {
1459                 if( $diff & $field ) {
1460                         $arr[ ( $new & $field ) ? 0 : 1 ][] = $desc;
1461                 }
1462         }
1463
1464         /**
1465          * Gets an array describing the changes made to the visibilit of the revision.
1466          * If the resulting array is $arr, then $arr[0] will contain an array of strings
1467          * describing the items that were hidden, $arr[2] will contain an array of strings
1468          * describing the items that were unhidden, and $arr[3] will contain an array with
1469          * a single string, which can be one of "applied restrictions to sysops",
1470          * "removed restrictions from sysops", or null.
1471          *
1472          * @param int $n The new bitfield.
1473          * @param int $o The old bitfield.
1474          * @return An array as described above.
1475          */
1476         function getChanges( $n, $o ) {
1477                 $diff = $n ^ $o;
1478                 $ret = array( 0 => array(), 1 => array(), 2 => array() );
1479                 // Build bitfield changes in language
1480                 $this->checkItem( wfMsgForContent( 'revdelete-content' ),
1481                         Revision::DELETED_TEXT, $diff, $n, $ret );
1482                 $this->checkItem( wfMsgForContent( 'revdelete-summary' ),
1483                         Revision::DELETED_COMMENT, $diff, $n, $ret );
1484                 $this->checkItem( wfMsgForContent( 'revdelete-uname' ),
1485                         Revision::DELETED_USER, $diff, $n, $ret );
1486                 // Restriction application to sysops
1487                 if( $diff & Revision::DELETED_RESTRICTED ) {
1488                         if( $n & Revision::DELETED_RESTRICTED )
1489                                 $ret[2][] = wfMsgForContent( 'revdelete-restricted' );
1490                         else
1491                                 $ret[2][] = wfMsgForContent( 'revdelete-unrestricted' );
1492                 }
1493                 return $ret;
1494         }
1495
1496         /**
1497          * Gets a log message to describe the given revision visibility change. This
1498          * message will be of the form "[hid {content, edit summary, username}];
1499          * [unhid {...}][applied restrictions to sysops] for $count revisions: $comment".
1500          *
1501          * @param int $count The number of effected revisions.
1502          * @param int $nbitfield The new bitfield for the revision.
1503          * @param int $obitfield The old bitfield for the revision.
1504          * @param string $comment The comment associated with the change.
1505          * @param bool $isForLog
1506          */
1507         function getLogMessage( $count, $nbitfield, $obitfield, $comment, $isForLog = false ) {
1508                 global $wgContLang;
1509
1510                 $s = '';
1511                 $changes = $this->getChanges( $nbitfield, $obitfield );
1512
1513                 if( count( $changes[0] ) ) {
1514                         $s .= wfMsgForContent ( 'revdelete-hid', implode ( ', ', $changes[0] ) );
1515                 }
1516                 if( count( $changes[1] ) ) {
1517                         if ($s) $s .= '; ';
1518                         $s .= wfMsgForContent ( 'revdelete-unhid', implode ( ', ', $changes[1] ) );
1519                 }
1520                 if( count( $changes[2] ) ) {
1521                         $s .= $s ? ' (' . $changes[2][0] . ')' : $changes[2][0];
1522                 }
1523
1524                 $msg = $isForLog ? 'logdelete-log-message' : 'revdelete-log-message';
1525                 $ret = wfMsgExt ( $msg, array( 'parsemag', 'content' ),
1526                         $s, $wgContLang->formatNum( $count ) );
1527
1528                 if( $comment ) $ret .= ": $comment";
1529
1530                 return $ret;
1531
1532         }
1533
1534         /**
1535          * Record a log entry on the action
1536          * @param Title $title, page where item was removed from
1537          * @param int $count the number of revisions altered for this page
1538          * @param int $nbitfield the new _deleted value
1539          * @param int $obitfield the old _deleted value
1540          * @param string $comment
1541          * @param Title $target, the relevant page
1542          * @param string $param, URL param
1543          * @param Array $items
1544          */
1545         function updateLog( $title, $count, $nbitfield, $obitfield, $comment, $target,
1546                 $param, $items = array() )
1547         {
1548                 // Put things hidden from sysops in the oversight log
1549                 $logtype = ( ($nbitfield | $obitfield) & Revision::DELETED_RESTRICTED ) ?
1550                         'suppress' : 'delete';
1551                 $log = new LogPage( $logtype );
1552
1553                 $reason = $this->getLogMessage( $count, $nbitfield, $obitfield, $comment, $param == 'logid' );
1554
1555                 if( $param == 'logid' ) {
1556                         $params = array( implode( ',', $items) );
1557                         $log->addEntry( 'event', $title, $reason, $params );
1558                 } else {
1559                         // Add params for effected page and ids
1560                         $params = array( $param, implode( ',', $items) );
1561                         $log->addEntry( 'revision', $title, $reason, $params );
1562                 }
1563         }
1564 }