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 ) {
 160                                 $conds = array('1=0');
 161                                 return array($conds,$limit);
 162                         }
 163                         # The event was be hidden after it was made
 164                         $conds[] = 'log_timestamp > '.$dbr->addQuotes($first); // type,time index
 165                 }
 166                 // Format is <id1,id2,i3...>
 167                 if( count($safeIds) ) {
 168                         $conds[] = "log_params RLIKE '(^|\n|,)(".implode('|',$safeIds).")(,|\n|$)'";
 169                 } else {
 170                         $conds = array('1=0');
 171                 }
 172                 return array($conds,$limit);
 173         }
 174
 175         private function secureOperation() {
 176                 global $wgUser;
 177                 $this->deleteKey = '';
 178                 // At this point, we should only have one of these
 179                 if( $this->oldids ) {
 180                         $this->revisions = $this->oldids;
 181                         $hide_content_name = array( 'revdelete-hide-text', 'wpHideText', Revision::DELETED_TEXT );
 182                         $this->deleteKey = 'oldid';
 183                 } else if( $this->artimestamps ) {
 184                         $this->archrevs = $this->artimestamps;
 185                         $hide_content_name = array( 'revdelete-hide-text', 'wpHideText', Revision::DELETED_TEXT );
 186                         $this->deleteKey = 'artimestamp';
 187                 } else if( $this->oldimgs ) {
 188                         $this->ofiles = $this->oldimgs;
 189                         $hide_content_name = array( 'revdelete-hide-image', 'wpHideImage', File::DELETED_FILE );
 190                         $this->deleteKey = 'oldimage';
 191                 } else if( $this->fileids ) {
 192                         $this->afiles = $this->fileids;
 193                         $hide_content_name = array( 'revdelete-hide-image', 'wpHideImage', File::DELETED_FILE );
 194                         $this->deleteKey = 'fileid';
 195                 } else if( $this->logids ) {
 196                         $this->events = $this->logids;
 197                         $hide_content_name = array( 'revdelete-hide-name', 'wpHideName', LogPage::DELETED_ACTION );
 198                         $this->deleteKey = 'logid';
 199                 }
 200                 // Our checkbox messages depends one what we are doing,
 201                 // e.g. we don't hide "text" for logs or images
 202                 $this->checks = array(
 203                         $hide_content_name,
 204                         array( 'revdelete-hide-comment', 'wpHideComment', Revision::DELETED_COMMENT ),
 205                         array( 'revdelete-hide-user', 'wpHideUser', Revision::DELETED_USER )
 206                 );
 207                 if( $wgUser->isAllowed('suppressrevision') ) {
 208                         $this->checks[] = array( 'revdelete-hide-restricted',
 209                                 'wpHideRestricted', Revision::DELETED_RESTRICTED );
 210                 }
 211         }
 212
 213         /**
 214          * Show a deleted file version requested by the visitor.
 215          */
 216         private function tryShowFile( $key ) {
 217                 global $wgOut, $wgRequest;
 218                 $oimage = RepoGroup::singleton()->getLocalRepo()->newFromArchiveName( $this->page, $key );
 219                 $oimage->load();
 220                 // Check if user is allowed to see this file
 221                 if( !$oimage->userCan(File::DELETED_FILE) ) {
 222                         $wgOut->permissionRequired( 'suppressrevision' );
 223                 } else {
 224                         $wgOut->disable();
 225                         # We mustn't allow the output to be Squid cached, otherwise
 226                         # if an admin previews a deleted image, and it's cached, then
 227                         # a user without appropriate permissions can toddle off and
 228                         # nab the image, and Squid will serve it
 229                         $wgRequest->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
 230                         $wgRequest->response()->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
 231                         $wgRequest->response()->header( 'Pragma: no-cache' );
 232                         # Stream the file to the client
 233                         $store = FileStore::get( 'deleted' );
 234                         $store->stream( $key );
 235                 }
 236         }
 237
 238         /**
 239          * This lets a user set restrictions for live and archived revisions
 240          */
 241         private function showRevs() {
 242                 global $wgOut, $wgUser;
 243                 $UserAllowed = true;
 244
 245                 $count = ($this->deleteKey == 'oldid') ?
 246                         count($this->revisions) : count($this->archrevs);
 247                 $wgOut->addWikiMsg( 'revdelete-selected', $this->page->getPrefixedText(), $count );
 248
 249                 $bitfields = 0;
 250                 $wgOut->addHTML( "<ul>" );
 251
 252                 $where = $revObjs = array();
 253                 $dbr = wfGetDB( DB_MASTER );
 254
 255                 $revisions = 0;
 256                 // Live revisions...
 257                 if( $this->deleteKey == 'oldid' ) {
 258                         // Run through and pull all our data in one query
 259                         foreach( $this->revisions as $revid ) {
 260                                 $where[] = intval($revid);
 261                         }
 262                         $result = $dbr->select( array('revision','page'), '*',
 263                                 array(
 264                                         'rev_page' => $this->page->getArticleID(),
 265                                         'rev_id' => $where,
 266                                         'rev_page = page_id' ),
 267                                 __METHOD__ );
 268                         while( $row = $dbr->fetchObject( $result ) ) {
 269                                 $revObjs[$row->rev_id] = new Revision( $row );
 270                         }
 271                         foreach( $this->revisions as $revid ) {
 272                                 if( !isset($revObjs[$revid]) ) continue; // Must exist
 273                                 // Check if the revision was Oversighted
 274                                 if( !$revObjs[$revid]->userCan(Revision::DELETED_RESTRICTED) ) {
 275                                         if( !$this->wasPosted ) {
 276                                                 $wgOut->permissionRequired( 'suppressrevision' );
 277                                                 return;
 278                                         }
 279                                         $UserAllowed = false;
 280                                 }
 281                                 $revisions++;
 282                                 $wgOut->addHTML( $this->historyLine( $revObjs[$revid] ) );
 283                                 $bitfields |= $revObjs[$revid]->mDeleted;
 284                         }
 285                 // The archives...
 286                 } else {
 287                         // Run through and pull all our data in one query
 288                         foreach( $this->archrevs as $timestamp ) {
 289                                 $where[] = $dbr->timestamp( $timestamp );
 290                         }
 291                         $result = $dbr->select( 'archive', '*',
 292                                 array(
 293                                         'ar_namespace' => $this->page->getNamespace(),
 294                                         'ar_title' => $this->page->getDBKey(),
 295                                         'ar_timestamp' => $where ),
 296                                 __METHOD__ );
 297                         while( $row = $dbr->fetchObject( $result ) ) {
 298                                 $timestamp = wfTimestamp( TS_MW, $row->ar_timestamp );
 299                                 $revObjs[$timestamp] = new Revision( array(
 300                                         'page'       => $this->page->getArticleId(),
 301                                         'id'         => $row->ar_rev_id,
 302                                         'text'       => $row->ar_text_id,
 303                                         'comment'    => $row->ar_comment,
 304                                         'user'       => $row->ar_user,
 305                                         'user_text'  => $row->ar_user_text,
 306                                         'timestamp'  => $timestamp,
 307                                         'minor_edit' => $row->ar_minor_edit,
 308                                         'text_id'    => $row->ar_text_id,
 309                                         'deleted'    => $row->ar_deleted,
 310                                         'len'        => $row->ar_len) );
 311                         }
 312                         foreach( $this->archrevs as $timestamp ) {
 313                                 if( !isset($revObjs[$timestamp]) ) {
 314                                         continue;
 315                                 } else if( !$revObjs[$timestamp]->userCan(Revision::DELETED_RESTRICTED) ) {
 316                                 // If a rev is hidden from sysops
 317                                         if( !$this->wasPosted ) {
 318                                                 $wgOut->permissionRequired( 'suppressrevision' );
 319                                                 return;
 320                                         }
 321                                         $UserAllowed = false;
 322                                 }
 323                                 $revisions++;
 324                                 $wgOut->addHTML( $this->historyLine( $revObjs[$timestamp] ) );
 325                                 $bitfields |= $revObjs[$timestamp]->mDeleted;
 326                         }
 327                 }
 328                 if( !$revisions ) {
 329                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 330                         return;
 331                 }
 332
 333                 $wgOut->addHTML( "</ul>" );
 334                 // Explanation text
 335                 $this->addUsageText();
 336
 337                 // Normal sysops can always see what they did, but can't always change it
 338                 if( !$UserAllowed ) return;
 339
 340                 $items = array(
 341                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 342                         Xml::submitButton( wfMsg( 'revdelete-submit' ) )
 343                 );
 344                 $hidden = array(
 345                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 346                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 347                         Xml::hidden( 'type', $this->deleteKey )
 348                 );
 349                 if( $this->deleteKey == 'oldid' ) {
 350                         $hidden[] = Xml::hidden( 'oldid', implode(',',$this->oldids) );
 351                 } else {
 352                         $hidden[] = Xml::hidden( 'artimestamp', implode(',',$this->artimestamps) );
 353                 }
 354                 $wgOut->addHTML(
 355                         Xml::openElement( 'form', array( 'method' => 'post',
 356                                 'action' => $this->getTitle()->getLocalUrl( 'action=submit' ),
 357                                 'id' => 'mw-revdel-form-revisions' ) ) .
 358                         Xml::openElement( 'fieldset' ) .
 359                         xml::element( 'legend', null,  wfMsg( 'revdelete-legend' ) )
 360                 );
 361
 362                 $wgOut->addHTML( $this->buildCheckBoxes( $bitfields ) );
 363                 foreach( $items as $item ) {
 364                         $wgOut->addHTML( Xml::tags( 'p', null, $item ) );
 365                 }
 366                 foreach( $hidden as $item ) {
 367                         $wgOut->addHTML( $item );
 368                 }
 369                 $wgOut->addHTML(
 370                         Xml::closeElement( 'fieldset' ) .
 371                         Xml::closeElement( 'form' ) . "\n"
 372                 );
 373         }
 374
 375         /**
 376          * This lets a user set restrictions for archived images
 377          */
 378         private function showImages() {
 379                 global $wgOut, $wgUser, $wgLang;
 380                 $UserAllowed = true;
 381
 382                 $count = ($this->deleteKey == 'oldimage') ? count($this->ofiles) : count($this->afiles);
 383                 $wgOut->addWikiMsg( 'revdelete-selected', $this->page->getPrefixedText(),
 384                         $wgLang->formatNum($count) );
 385
 386                 $bitfields = 0;
 387                 $wgOut->addHTML( "<ul>" );
 388
 389                 $where = $filesObjs = array();
 390                 $dbr = wfGetDB( DB_MASTER );
 391                 // Live old revisions...
 392                 $revisions = 0;
 393                 if( $this->deleteKey == 'oldimage' ) {
 394                         // Run through and pull all our data in one query
 395                         foreach( $this->ofiles as $timestamp ) {
 396                                 $where[] = $timestamp.'!'.$this->page->getDBKey();
 397                         }
 398                         $result = $dbr->select( 'oldimage', '*',
 399                                 array(
 400                                         'oi_name' => $this->page->getDBKey(),
 401                                         'oi_archive_name' => $where ),
 402                                 __METHOD__ );
 403                         while( $row = $dbr->fetchObject( $result ) ) {
 404                                 $filesObjs[$row->oi_archive_name] = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
 405                                 $filesObjs[$row->oi_archive_name]->user = $row->oi_user;
 406                                 $filesObjs[$row->oi_archive_name]->user_text = $row->oi_user_text;
 407                         }
 408                         // Check through our images
 409                         foreach( $this->ofiles as $timestamp ) {
 410                                 $archivename = $timestamp.'!'.$this->page->getDBKey();
 411                                 if( !isset($filesObjs[$archivename]) ) {
 412                                         continue;
 413                                 } else if( !$filesObjs[$archivename]->userCan(File::DELETED_RESTRICTED) ) {
 414                                         // If a rev is hidden from sysops
 415                                         if( !$this->wasPosted ) {
 416                                                 $wgOut->permissionRequired( 'suppressrevision' );
 417                                                 return;
 418                                         }
 419                                         $UserAllowed = false;
 420                                 }
 421                                 $revisions++;
 422                                 // Inject history info
 423                                 $wgOut->addHTML( $this->fileLine( $filesObjs[$archivename] ) );
 424                                 $bitfields |= $filesObjs[$archivename]->deleted;
 425                         }
 426                 // Archived files...
 427                 } else {
 428                         // Run through and pull all our data in one query
 429                         foreach( $this->afiles as $id ) {
 430                                 $where[] = intval($id);
 431                         }
 432                         $result = $dbr->select( 'filearchive', '*',
 433                                 array(
 434                                         'fa_name' => $this->page->getDBKey(),
 435                                         'fa_id' => $where ),
 436                                 __METHOD__ );
 437                         while( $row = $dbr->fetchObject( $result ) ) {
 438                                 $filesObjs[$row->fa_id] = ArchivedFile::newFromRow( $row );
 439                         }
 440
 441                         foreach( $this->afiles as $fileid ) {
 442                                 if( !isset($filesObjs[$fileid]) ) {
 443                                         continue;
 444                                 } else if( !$filesObjs[$fileid]->userCan(File::DELETED_RESTRICTED) ) {
 445                                         // If a rev is hidden from sysops
 446                                         if( !$this->wasPosted ) {
 447                                                 $wgOut->permissionRequired( 'suppressrevision' );
 448                                                 return;
 449                                         }
 450                                         $UserAllowed = false;
 451                                 }
 452                                 $revisions++;
 453                                 // Inject history info
 454                                 $wgOut->addHTML( $this->archivedfileLine( $filesObjs[$fileid] ) );
 455                                 $bitfields |= $filesObjs[$fileid]->deleted;
 456                         }
 457                 }
 458                 if( !$revisions ) {
 459                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 460                         return;
 461                 }
 462
 463                 $wgOut->addHTML( "</ul>" );
 464                 // Explanation text
 465                 $this->addUsageText();
 466                 // Normal sysops can always see what they did, but can't always change it
 467                 if( !$UserAllowed ) return;
 468
 469                 $items = array(
 470                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 471                         Xml::submitButton( wfMsg( 'revdelete-submit' ) )
 472                 );
 473                 $hidden = array(
 474                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 475                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 476                         Xml::hidden( 'type', $this->deleteKey )
 477                 );
 478                 if( $this->deleteKey == 'oldimage' ) {
 479                         $hidden[] = Xml::hidden( 'oldimage', implode(',',$this->oldimgs) );
 480                 } else {
 481                         $hidden[] = Xml::hidden( 'fileid', implode(',',$this->fileids) );
 482                 }
 483                 $wgOut->addHTML(
 484                         Xml::openElement( 'form', array( 'method' => 'post',
 485                                 'action' => $this->getTitle()->getLocalUrl( 'action=submit' ),
 486                                 'id' => 'mw-revdel-form-filerevisions' )
 487                         ) .
 488                         Xml::fieldset( wfMsg( 'revdelete-legend' ) )
 489                 );
 490
 491                 $wgOut->addHTML( $this->buildCheckBoxes( $bitfields ) );
 492                 foreach( $items as $item ) {
 493                         $wgOut->addHTML( "<p>$item</p>" );
 494                 }
 495                 foreach( $hidden as $item ) {
 496                         $wgOut->addHTML( $item );
 497                 }
 498
 499                 $wgOut->addHTML(
 500                         Xml::closeElement( 'fieldset' ) .
 501                         Xml::closeElement( 'form' ) . "\n"
 502                 );
 503         }
 504
 505         /**
 506          * This lets a user set restrictions for log items
 507          */
 508         private function showLogItems() {
 509                 global $wgOut, $wgUser, $wgMessageCache, $wgLang;
 510                 $UserAllowed = true;
 511
 512                 $wgOut->addWikiMsg( 'logdelete-selected', $wgLang->formatNum( count($this->events) ) );
 513
 514                 $bitfields = 0;
 515                 $wgOut->addHTML( "<ul>" );
 516
 517                 $where = $logRows = array();
 518                 $dbr = wfGetDB( DB_MASTER );
 519                 // Run through and pull all our data in one query
 520                 $logItems = 0;
 521                 foreach( $this->events as $logid ) {
 522                         $where[] = intval($logid);
 523                 }
 524                 list($log,$logtype) = explode( '/',$this->page->getDBKey(), 2 );
 525                 $result = $dbr->select( 'logging', '*',
 526                         array(
 527                                 'log_type' => $logtype,
 528                                 'log_id' => $where ),
 529                         __METHOD__ );
 530                 while( $row = $dbr->fetchObject( $result ) ) {
 531                         $logRows[$row->log_id] = $row;
 532                 }
 533                 $wgMessageCache->loadAllMessages();
 534                 foreach( $this->events as $logid ) {
 535                         // Don't hide from oversight log!!!
 536                         if( !isset( $logRows[$logid] ) || $logRows[$logid]->log_type=='suppress' ) {
 537                                 continue;
 538                         } else if( !LogEventsList::userCan( $logRows[$logid],Revision::DELETED_RESTRICTED) ) {
 539                         // If an event is hidden from sysops
 540                                 if( !$this->wasPosted ) {
 541                                         $wgOut->permissionRequired( 'suppressrevision' );
 542                                         return;
 543                                 }
 544                                 $UserAllowed = false;
 545                         }
 546                         $logItems++;
 547                         $wgOut->addHTML( $this->logLine( $logRows[$logid] ) );
 548                         $bitfields |= $logRows[$logid]->log_deleted;
 549                 }
 550                 if( !$logItems ) {
 551                         $wgOut->showErrorPage( 'revdelete-nologid-title', 'revdelete-nologid-text' );
 552                         return;
 553                 }
 554
 555                 $wgOut->addHTML( "</ul>" );
 556                 // Explanation text
 557                 $this->addUsageText();
 558                 // Normal sysops can always see what they did, but can't always change it
 559                 if( !$UserAllowed ) return;
 560
 561                 $items = array(
 562                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 563                         Xml::submitButton( wfMsg( 'revdelete-submit' ) ) );
 564                 $hidden = array(
 565                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 566                         Xml::hidden( 'target', $this->page->getPrefixedDBKey() ),
 567                         Xml::hidden( 'page', $this->contextPage ? $this->contextPage->getPrefixedDBKey() : '' ),
 568                         Xml::hidden( 'type', $this->deleteKey ),
 569                         Xml::hidden( 'logid', implode(',',$this->logids) )
 570                 );
 571
 572                 $wgOut->addHTML(
 573                         Xml::openElement( 'form', array( 'method' => 'post',
 574                                 'action' => $this->getTitle()->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;
 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( $this->getTitle(), $date,
 674                                         "target=$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', $wgLang->formatNum( $file->getWidth() ),
 684                         $wgLang->formatNum( $file->getHeight() ) ) .
 685                         ' (' . wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $file->getSize() ) ) . ')';
 686                 $data = htmlspecialchars( $data );
 687
 688                 return "<li>$pageLink ".$this->fileUserTools( $file )." $data ".
 689                         $this->fileComment( $file )."$del</li>";
 690         }
 691
 692         /**
 693          * @param ArchivedFile $file
 694          * @returns string
 695          */
 696         private function archivedfileLine( $file ) {
 697                 global $wgLang;
 698
 699                 $target = $this->page->getPrefixedText();
 700                 $date = $wgLang->timeanddate( $file->getTimestamp(), true  );
 701
 702                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 703                 $pageLink = $this->skin->makeKnownLinkObj( $undelete, $date,
 704                         "target=$target&file={$file->getKey()}" );
 705
 706                 $del = '';
 707                 if( $file->isDeleted(File::DELETED_FILE) ) {
 708                         $del = ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 709                 }
 710
 711                 $data = wfMsg( 'widthheight', $wgLang->formatNum( $file->getWidth() ),
 712                         $wgLang->formatNum( $file->getHeight() ) ) .
 713                         ' (' . wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $file->getSize() ) ) . ')';
 714                 $data = htmlspecialchars( $data );
 715
 716                 return "<li>$pageLink ".$this->fileUserTools( $file )." $data ".
 717                         $this->fileComment( $file )."$del</li>";
 718         }
 719
 720         /**
 721          * @param Array $row row
 722          * @returns string
 723          */
 724         private function logLine( $row ) {
 725                 global $wgLang;
 726
 727                 $date = $wgLang->timeanddate( $row->log_timestamp );
 728                 $paramArray = LogPage::extractParams( $row->log_params );
 729                 $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 730
 731                 $logtitle = SpecialPage::getTitleFor( 'Log' );
 732                 $loglink = $this->skin->makeKnownLinkObj( $logtitle, wfMsgHtml( 'log' ),
 733                         wfArrayToCGI( array( 'page' => $title->getPrefixedUrl() ) ) );
 734                 // Action text
 735                 if( !LogEventsList::userCan($row,LogPage::DELETED_ACTION) ) {
 736                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 737                 } else {
 738                         $action = LogPage::actionText( $row->log_type, $row->log_action, $title,
 739                                 $this->skin, $paramArray, true, true );
 740                         if( $row->log_deleted & LogPage::DELETED_ACTION )
 741                                 $action = '<span class="history-deleted">' . $action . '</span>';
 742                 }
 743                 // User links
 744                 $userLink = $this->skin->userLink( $row->log_user, User::WhoIs($row->log_user) );
 745                 if( LogEventsList::isDeleted($row,LogPage::DELETED_USER) ) {
 746                         $userLink = '<span class="history-deleted">' . $userLink . '</span>';
 747                 }
 748                 // Comment
 749                 $comment = $wgLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
 750                 if( LogEventsList::isDeleted($row,LogPage::DELETED_COMMENT) ) {
 751                         $comment = '<span class="history-deleted">' . $comment . '</span>';
 752                 }
 753                 return "<li>($loglink) $date $userLink $action $comment</li>";
 754         }
 755
 756         /**
 757          * Generate a user tool link cluster if the current user is allowed to view it
 758          * @param ArchivedFile $file
 759          * @return string HTML
 760          */
 761         private function fileUserTools( $file ) {
 762                 if( $file->userCan( Revision::DELETED_USER ) ) {
 763                         $link = $this->skin->userLink( $file->user, $file->user_text ) .
 764                                 $this->skin->userToolLinks( $file->user, $file->user_text );
 765                 } else {
 766                         $link = wfMsgHtml( 'rev-deleted-user' );
 767                 }
 768                 if( $file->isDeleted( Revision::DELETED_USER ) ) {
 769                         return '<span class="history-deleted">' . $link . '</span>';
 770                 }
 771                 return $link;
 772         }
 773
 774         /**
 775          * Wrap and format the given file's comment block, if the current
 776          * user is allowed to view it.
 777          *
 778          * @param ArchivedFile $file
 779          * @return string HTML
 780          */
 781         private function fileComment( $file ) {
 782                 if( $file->userCan( File::DELETED_COMMENT ) ) {
 783                         $block = $this->skin->commentBlock( $file->description );
 784                 } else {
 785                         $block = ' ' . wfMsgHtml( 'rev-deleted-comment' );
 786                 }
 787                 if( $file->isDeleted( File::DELETED_COMMENT ) ) {
 788                         return "<span class=\"history-deleted\">$block</span>";
 789                 }
 790                 return $block;
 791         }
 792
 793         /**
 794          * @param WebRequest $request
 795          */
 796         private function submit( $request ) {
 797                 global $wgUser, $wgOut;
 798                 # Check edit token on submission
 799                 if( $this->wasPosted && !$wgUser->matchEditToken( $request->getVal('wpEditToken') ) ) {
 800                         $wgOut->addWikiMsg( 'sessionfailure' );
 801                         return false;
 802                 }
 803                 $bitfield = $this->extractBitfield( $request );
 804                 $comment = $request->getText( 'wpReason' );
 805                 # Can the user set this field?
 806                 if( $bitfield & Revision::DELETED_RESTRICTED && !$wgUser->isAllowed('suppressrevision') ) {
 807                         $wgOut->permissionRequired( 'suppressrevision' );
 808                         return false;
 809                 }
 810                 # If the save went through, go to success message...
 811                 if( $this->save( $bitfield, $comment, $this->page ) ) {
 812                         $this->success();
 813                         return true;
 814                 # ...otherwise, bounce back to form...
 815                 } else {
 816                         $this->failure();
 817                 }
 818                 return false;
 819         }
 820
 821         private function success() {
 822                 global $wgOut;
 823                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 824                 $wrap = '<span class="success">$1</span>';
 825                 if( $this->deleteKey == 'logid' ) {
 826                         $wgOut->wrapWikiMsg( $wrap, 'logdelete-success' );
 827                         $this->showLogItems();
 828                 } else if( $this->deleteKey == 'oldid' || $this->deleteKey == 'artimestamp' ) {
 829                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 830                         $this->showRevs();
 831                 } else if( $this->deleteKey == 'fileid' ) {
 832                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 833                         $this->showImages();
 834                 } else if( $this->deleteKey == 'oldimage' ) {
 835                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 836                         $this->showImages();
 837                 }
 838         }
 839
 840         private function failure() {
 841                 global $wgOut;
 842                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 843                 $wrap = '<span class="error">$1</span>';
 844                 if( $this->deleteKey == 'logid' ) {
 845                         $this->showLogItems();
 846                 } else if( $this->deleteKey == 'oldid' || $this->deleteKey == 'artimestamp' ) {
 847                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-failure' );
 848                         $this->showRevs();
 849                 } else if( $this->deleteKey == 'fileid' ) {
 850                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-failure' );
 851                         $this->showImages();
 852                 } else if( $this->deleteKey == 'oldimage' ) {
 853                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-failure' );
 854                         $this->showImages();
 855                 }
 856         }
 857
 858         /**
 859          * Put together a rev_deleted bitfield from the submitted checkboxes
 860          * @param WebRequest $request
 861          * @return int
 862          */
 863         private function extractBitfield( $request ) {
 864                 $bitfield = 0;
 865                 foreach( $this->checks as $item ) {
 866                         list( /* message */ , $name, $field ) = $item;
 867                         if( $request->getCheck( $name ) ) {
 868                                 $bitfield |= $field;
 869                         }
 870                 }
 871                 return $bitfield;
 872         }
 873
 874         private function save( $bitfield, $reason, $title ) {
 875                 $dbw = wfGetDB( DB_MASTER );
 876                 // Don't allow simply locking the interface for no reason
 877                 if( $bitfield == Revision::DELETED_RESTRICTED ) {
 878                         $bitfield = 0;
 879                 }
 880                 $deleter = new RevisionDeleter( $dbw );
 881                 // By this point, only one of the below should be set
 882                 if( isset($this->revisions) ) {
 883                         return $deleter->setRevVisibility( $title, $this->revisions, $bitfield, $reason );
 884                 } else if( isset($this->archrevs) ) {
 885                         return $deleter->setArchiveVisibility( $title, $this->archrevs, $bitfield, $reason );
 886                 } else if( isset($this->ofiles) ) {
 887                         return $deleter->setOldImgVisibility( $title, $this->ofiles, $bitfield, $reason );
 888                 } else if( isset($this->afiles) ) {
 889                         return $deleter->setArchFileVisibility( $title, $this->afiles, $bitfield, $reason );
 890                 } else if( isset($this->events) ) {
 891                         return $deleter->setEventVisibility( $title, $this->events, $bitfield, $reason );
 892                 }
 893                 return false;
 894         }
 895 }
 896
 897 /**
 898  * Implements the actions for Revision Deletion.
 899  * @ingroup SpecialPage
 900  */
 901 class RevisionDeleter {
 902         function __construct( $db ) {
 903                 $this->dbw = $db;
 904         }
 905
 906         /**
 907          * @param $title, the page these events apply to
 908          * @param array $items list of revision ID numbers
 909          * @param int $bitfield new rev_deleted value
 910          * @param string $comment Comment for log records
 911          */
 912         function setRevVisibility( $title, $items, $bitfield, $comment ) {
 913                 global $wgOut;
 914
 915                 $userAllowedAll = $success = true;
 916                 $revIDs = array();
 917                 $revCount = 0;
 918                 // Run through and pull all our data in one query
 919                 foreach( $items as $revid ) {
 920                         $where[] = intval($revid);
 921                 }
 922                 $result = $this->dbw->select( array('revision','page'), '*',
 923                         array( 'rev_page' => $title->getArticleID(),
 924                                 'rev_id' => $where, 'rev_page = page_id' ),
 925                         __METHOD__
 926                 );
 927                 while( $row = $this->dbw->fetchObject( $result ) ) {
 928                         $revObjs[$row->rev_id] = new Revision( $row );
 929                 }
 930                 // To work!
 931                 foreach( $items as $revid ) {
 932                         if( !isset($revObjs[$revid]) ) {
 933                                 $success = false;
 934                                 continue; // Must exist
 935                         } else if( $revObjs[$revid]->isCurrent() && ($bitfield & Revision::DELETED_TEXT) ) {
 936                                 $success = false;
 937                                 continue; // Cannot hide current version text
 938                         } else if( !$revObjs[$revid]->userCan(Revision::DELETED_RESTRICTED) ) {
 939                         $userAllowedAll = false;
 940                                 continue;
 941                         }
 942                         // For logging, maintain a count of revisions
 943                         if( $revObjs[$revid]->mDeleted != $bitfield ) {
 944                                 $revIDs[] = $revid;
 945                                 $this->updateRevision( $revObjs[$revid], $bitfield );
 946                                 $this->updateRecentChangesEdits( $revObjs[$revid], $bitfield, false );
 947                                 $revCount++;
 948                         }
 949                 }
 950                 // Clear caches...
 951                 // Don't log or touch if nothing changed
 952                 if( $revCount > 0 ) {
 953                         $this->updateLog( $title, $revCount, $bitfield, $revObjs[$revid]->mDeleted,
 954                                 $comment, $title, 'oldid', $revIDs );
 955                         $this->updatePage( $title );
 956                 }
 957                 // Where all revs allowed to be set?
 958                 if( !$userAllowedAll ) {
 959                         //FIXME: still might be confusing???
 960                         $wgOut->permissionRequired( 'suppressrevision' );
 961                         return false;
 962                 }
 963
 964                 return $success;
 965         }
 966
 967          /**
 968          * @param $title, the page these events apply to
 969          * @param array $items list of revision ID numbers
 970          * @param int $bitfield new rev_deleted value
 971          * @param string $comment Comment for log records
 972          */
 973         function setArchiveVisibility( $title, $items, $bitfield, $comment ) {
 974                 global $wgOut;
 975
 976                 $userAllowedAll = $success = true;
 977                 $count = 0;
 978                 $Id_set = array();
 979                 // Run through and pull all our data in one query
 980                 foreach( $items as $timestamp ) {
 981                         $where[] = $this->dbw->timestamp( $timestamp );
 982                 }
 983                 $result = $this->dbw->select( 'archive', '*',
 984                         array(
 985                                 'ar_namespace' => $title->getNamespace(),
 986                                 'ar_title' => $title->getDBKey(),
 987                                 'ar_timestamp' => $where ),
 988                         __METHOD__ );
 989                 while( $row = $this->dbw->fetchObject( $result ) ) {
 990                         $timestamp = wfTimestamp( TS_MW, $row->ar_timestamp );
 991                         $revObjs[$timestamp] = new Revision( array(
 992                                 'page'       => $title->getArticleId(),
 993                                 'id'         => $row->ar_rev_id,
 994                                 'text'       => $row->ar_text_id,
 995                                 'comment'    => $row->ar_comment,
 996                                 'user'       => $row->ar_user,
 997                                 'user_text'  => $row->ar_user_text,
 998                                 'timestamp'  => $timestamp,
 999                                 'minor_edit' => $row->ar_minor_edit,
1000                                 'text_id'    => $row->ar_text_id,
1001                                 'deleted'    => $row->ar_deleted,
1002                                 'len'        => $row->ar_len) );
1003                 }
1004                 // To work!
1005                 foreach( $items as $timestamp ) {
1006                         // This will only select the first revision with this timestamp.
1007                         // Since they are all selected/deleted at once, we can just check the
1008                         // permissions of one. UPDATE is done via timestamp, so all revs are set.
1009                         if( !is_object($revObjs[$timestamp]) ) {
1010                                 $success = false;
1011                                 continue; // Must exist
1012                         } else if( !$revObjs[$timestamp]->userCan(Revision::DELETED_RESTRICTED) ) {
1013                         $userAllowedAll=false;
1014                                 continue;
1015                         }
1016                         // Which revisions did we change anything about?
1017                         if( $revObjs[$timestamp]->mDeleted != $bitfield ) {
1018                            $Id_set[]=$timestamp;
1019                            $count++;
1020
1021                            $this->updateArchive( $revObjs[$timestamp], $title, $bitfield );
1022                         }
1023                 }
1024                 // For logging, maintain a count of revisions
1025                 if( $count > 0 ) {
1026                         $this->updateLog( $title, $count, $bitfield, $revObjs[$timestamp]->mDeleted,
1027                                 $comment, $title, 'artimestamp', $Id_set );
1028                 }
1029                 // Where all revs allowed to be set?
1030                 if( !$userAllowedAll ) {
1031                         $wgOut->permissionRequired( 'suppressrevision' );
1032                         return false;
1033                 }
1034
1035                 return $success;
1036         }
1037
1038          /**
1039          * @param $title, the page these events apply to
1040          * @param array $items list of revision ID numbers
1041          * @param int $bitfield new rev_deleted value
1042          * @param string $comment Comment for log records
1043          */
1044         function setOldImgVisibility( $title, $items, $bitfield, $comment ) {
1045                 global $wgOut;
1046
1047                 $userAllowedAll = $success = true;
1048                 $count = 0;
1049                 $set = array();
1050                 // Run through and pull all our data in one query
1051                 foreach( $items as $timestamp ) {
1052                         $where[] = $timestamp.'!'.$title->getDBKey();
1053                 }
1054                 $result = $this->dbw->select( 'oldimage', '*',
1055                         array(
1056                                 'oi_name' => $title->getDBKey(),
1057                                 'oi_archive_name' => $where ),
1058                         __METHOD__ );
1059                 while( $row = $this->dbw->fetchObject( $result ) ) {
1060                         $filesObjs[$row->oi_archive_name] = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
1061                         $filesObjs[$row->oi_archive_name]->user = $row->oi_user;
1062                         $filesObjs[$row->oi_archive_name]->user_text = $row->oi_user_text;
1063                 }
1064                 // To work!
1065                 foreach( $items as $timestamp ) {
1066                         $archivename = $timestamp.'!'.$title->getDBKey();
1067                         if( !isset($filesObjs[$archivename]) ) {
1068                                 $success = false;
1069                                 continue; // Must exist
1070                         } else if( !$filesObjs[$archivename]->userCan(File::DELETED_RESTRICTED) ) {
1071                         $userAllowedAll=false;
1072                                 continue;
1073                         }
1074
1075                         $transaction = true;
1076                         // Which revisions did we change anything about?
1077                         if( $filesObjs[$archivename]->deleted != $bitfield ) {
1078                                 $count++;
1079
1080                                 $this->dbw->begin();
1081                                 $this->updateOldFiles( $filesObjs[$archivename], $bitfield );
1082                                 // If this image is currently hidden...
1083                                 if( $filesObjs[$archivename]->deleted & File::DELETED_FILE ) {
1084                                         if( $bitfield & File::DELETED_FILE ) {
1085                                                 # Leave it alone if we are not changing this...
1086                                                 $set[]=$timestamp;
1087                                                 $transaction = true;
1088                                         } else {
1089                                                 # We are moving this out
1090                                                 $transaction = $this->makeOldImagePublic( $filesObjs[$archivename] );
1091                                                 $set[]=$transaction;
1092                                         }
1093                                 // Is it just now becoming hidden?
1094                                 } else if( $bitfield & File::DELETED_FILE ) {
1095                                         $transaction = $this->makeOldImagePrivate( $filesObjs[$archivename] );
1096                                         $set[]=$transaction;
1097                                 } else {
1098                                         $set[]=$timestamp;
1099                                 }
1100                                 // If our file operations fail, then revert back the db
1101                                 if( $transaction==false ) {
1102                                         $this->dbw->rollback();
1103                                         return false;
1104                                 }
1105                                 $this->dbw->commit();
1106                         }
1107                 }
1108
1109                 // Log if something was changed
1110                 if( $count > 0 ) {
1111                         $this->updateLog( $title, $count, $bitfield, $filesObjs[$archivename]->deleted,
1112                                 $comment, $title, 'oldimage', $set );
1113                         # Purge page/history
1114                         $file = wfLocalFile( $title );
1115                         $file->purgeCache();
1116                         $file->purgeHistory();
1117                         # Invalidate cache for all pages using this file
1118                         $update = new HTMLCacheUpdate( $title, 'imagelinks' );
1119                         $update->doUpdate();
1120                 }
1121                 // Where all revs allowed to be set?
1122                 if( !$userAllowedAll ) {
1123                         $wgOut->permissionRequired( 'suppressrevision' );
1124                         return false;
1125                 }
1126
1127                 return $success;
1128         }
1129
1130          /**
1131          * @param $title, the page these events apply to
1132          * @param array $items list of revision ID numbers
1133          * @param int $bitfield new rev_deleted value
1134          * @param string $comment Comment for log records
1135          */
1136         function setArchFileVisibility( $title, $items, $bitfield, $comment ) {
1137                 global $wgOut;
1138
1139                 $userAllowedAll = $success = true;
1140                 $count = 0;
1141                 $Id_set = array();
1142
1143                 // Run through and pull all our data in one query
1144                 foreach( $items as $id ) {
1145                         $where[] = intval($id);
1146                 }
1147                 $result = $this->dbw->select( 'filearchive', '*',
1148                         array( 'fa_name' => $title->getDBKey(),
1149                                 'fa_id' => $where ),
1150                         __METHOD__ );
1151                 while( $row = $this->dbw->fetchObject( $result ) ) {
1152                         $filesObjs[$row->fa_id] = ArchivedFile::newFromRow( $row );
1153                 }
1154                 // To work!
1155                 foreach( $items as $fileid ) {
1156                         if( !isset($filesObjs[$fileid]) ) {
1157                                 $success = false;
1158                                 continue; // Must exist
1159                         } else if( !$filesObjs[$fileid]->userCan(File::DELETED_RESTRICTED) ) {
1160                         $userAllowedAll=false;
1161                                 continue;
1162                         }
1163                         // Which revisions did we change anything about?
1164                         if( $filesObjs[$fileid]->deleted != $bitfield ) {
1165                            $Id_set[]=$fileid;
1166                            $count++;
1167
1168                            $this->updateArchFiles( $filesObjs[$fileid], $bitfield );
1169                         }
1170                 }
1171                 // Log if something was changed
1172                 if( $count > 0 ) {
1173                         $this->updateLog( $title, $count, $bitfield, $comment,
1174                                 $filesObjs[$fileid]->deleted, $title, 'fileid', $Id_set );
1175                 }
1176                 // Where all revs allowed to be set?
1177                 if( !$userAllowedAll ) {
1178                         $wgOut->permissionRequired( 'suppressrevision' );
1179                         return false;
1180                 }
1181
1182                 return $success;
1183         }
1184
1185         /**
1186          * @param $title, the log page these events apply to
1187          * @param array $items list of log ID numbers
1188          * @param int $bitfield new log_deleted value
1189          * @param string $comment Comment for log records
1190          */
1191         function setEventVisibility( $title, $items, $bitfield, $comment ) {
1192                 global $wgOut;
1193
1194                 $userAllowedAll = $success = true;
1195                 $count = 0;
1196                 $log_Ids = array();
1197
1198                 // Run through and pull all our data in one query
1199                 foreach( $items as $logid ) {
1200                         $where[] = intval($logid);
1201                 }
1202                 list($log,$logtype) = explode( '/',$title->getDBKey(), 2 );
1203                 $result = $this->dbw->select( 'logging', '*',
1204                         array( 'log_type' => $logtype, 'log_id' => $where ),
1205                         __METHOD__
1206                 );
1207                 while( $row = $this->dbw->fetchObject( $result ) ) {
1208                         $logRows[$row->log_id] = $row;
1209                 }
1210                 // To work!
1211                 foreach( $items as $logid ) {
1212                         if( !isset($logRows[$logid]) ) {
1213                                 $success = false;
1214                                 continue; // Must exist
1215                         } else if( !LogEventsList::userCan($logRows[$logid], LogPage::DELETED_RESTRICTED)
1216                                 || $logRows[$logid]->log_type == 'suppress' )
1217                         {
1218                         $userAllowedAll=false; // Don't hide from oversight log!!!
1219                         continue;
1220                         }
1221                         // Which logs did we change anything about?
1222                         if( $logRows[$logid]->log_deleted != $bitfield ) {
1223                                 $log_Ids[] = $logid;
1224                                 $this->updateLogs( $logRows[$logid], $bitfield );
1225                                 $this->updateRecentChangesLog( $logRows[$logid], $bitfield );
1226                                 $count++;
1227                         }
1228                 }
1229                 // Don't log or touch if nothing changed
1230                 if( $count > 0 ) {
1231                         $this->updateLog( $title, $count, $bitfield, $logRows[$logid]->log_deleted,
1232                                 $comment, $title, 'logid', $log_Ids );
1233                 }
1234                 // Were all revs allowed to be set?
1235                 if( !$userAllowedAll ) {
1236                         $wgOut->permissionRequired( 'suppressrevision' );
1237                         return false;
1238                 }
1239
1240                 return $success;
1241         }
1242
1243         /**
1244          * Moves an image to a safe private location
1245          * Caller is responsible for clearing caches
1246          * @param File $oimage
1247          * @returns mixed, timestamp string on success, false on failure
1248          */
1249         function makeOldImagePrivate( $oimage ) {
1250                 $transaction = new FSTransaction();
1251                 if( !FileStore::lock() ) {
1252                         wfDebug( __METHOD__.": failed to acquire file store lock, aborting\n" );
1253                         return false;
1254                 }
1255                 $oldpath = $oimage->getArchivePath() . DIRECTORY_SEPARATOR . $oimage->archive_name;
1256                 // Dupe the file into the file store
1257                 if( file_exists( $oldpath ) ) {
1258                         // Is our directory configured?
1259                         if( $store = FileStore::get( 'deleted' ) ) {
1260                                 if( !$oimage->sha1 ) {
1261                                         $oimage->upgradeRow(); // sha1 may be missing
1262                                 }
1263                                 $key = $oimage->sha1 . '.' . $oimage->getExtension();
1264                                 $transaction->add( $store->insert( $key, $oldpath, FileStore::DELETE_ORIGINAL ) );
1265                         } else {
1266                                 $group = null;
1267                                 $key = null;
1268                                 $transaction = false; // Return an error and do nothing
1269                         }
1270                 } else {
1271                         wfDebug( __METHOD__." deleting already-missing '$oldpath'; moving on to database\n" );
1272                         $group = null;
1273                         $key = '';
1274                         $transaction = new FSTransaction(); // empty
1275                 }
1276
1277                 if( $transaction === false ) {
1278                         // Fail to restore?
1279                         wfDebug( __METHOD__.": import to file store failed, aborting\n" );
1280                         throw new MWException( "Could not archive and delete file $oldpath" );
1281                         return false;
1282                 }
1283
1284                 wfDebug( __METHOD__.": set db items, applying file transactions\n" );
1285                 $transaction->commit();
1286                 FileStore::unlock();
1287
1288                 $m = explode('!',$oimage->archive_name,2);
1289                 $timestamp = $m[0];
1290
1291                 return $timestamp;
1292         }
1293
1294         /**
1295          * Moves an image from a safe private location
1296          * Caller is responsible for clearing caches
1297          * @param File $oimage
1298          * @returns mixed, string timestamp on success, false on failure
1299          */
1300         function makeOldImagePublic( $oimage ) {
1301                 $transaction = new FSTransaction();
1302                 if( !FileStore::lock() ) {
1303                         wfDebug( __METHOD__." could not acquire filestore lock\n" );
1304                         return false;
1305                 }
1306
1307                 $store = FileStore::get( 'deleted' );
1308                 if( !$store ) {
1309                         wfDebug( __METHOD__.": skipping row with no file.\n" );
1310                         return false;
1311                 }
1312
1313                 $key = $oimage->sha1.'.'.$oimage->getExtension();
1314                 $destDir = $oimage->getArchivePath();
1315                 if( !is_dir( $destDir ) ) {
1316                         wfMkdirParents( $destDir );
1317                 }
1318                 $destPath = $destDir . DIRECTORY_SEPARATOR . $oimage->archive_name;
1319                 // Check if any other stored revisions use this file;
1320                 // if so, we shouldn't remove the file from the hidden
1321                 // archives so they will still work. Check hidden files first.
1322                 $useCount = $this->dbw->selectField( 'oldimage', '1',
1323                         array( 'oi_sha1' => $oimage->sha1,
1324                                 'oi_deleted & '.File::DELETED_FILE => File::DELETED_FILE ),
1325                         __METHOD__, array( 'FOR UPDATE' ) );
1326                 // Check the rest of the deleted archives too.
1327                 // (these are the ones that don't show in the image history)
1328                 if( !$useCount ) {
1329                         $useCount = $this->dbw->selectField( 'filearchive', '1',
1330                                 array( 'fa_storage_group' => 'deleted', 'fa_storage_key' => $key ),
1331                                 __METHOD__, array( 'FOR UPDATE' ) );
1332                 }
1333
1334                 if( $useCount == 0 ) {
1335                         wfDebug( __METHOD__.": nothing else using {$oimage->sha1}, will deleting after\n" );
1336                         $flags = FileStore::DELETE_ORIGINAL;
1337                 } else {
1338                         $flags = 0;
1339                 }
1340                 $transaction->add( $store->export( $key, $destPath, $flags ) );
1341
1342                 wfDebug( __METHOD__.": set db items, applying file transactions\n" );
1343                 $transaction->commit();
1344                 FileStore::unlock();
1345
1346                 $m = explode('!',$oimage->archive_name,2);
1347                 $timestamp = $m[0];
1348
1349                 return $timestamp;
1350         }
1351
1352         /**
1353          * Update the revision's rev_deleted field
1354          * @param Revision $rev
1355          * @param int $bitfield new rev_deleted bitfield value
1356          */
1357         function updateRevision( $rev, $bitfield ) {
1358                 $this->dbw->update( 'revision',
1359                         array( 'rev_deleted' => $bitfield ),
1360                         array( 'rev_id' => $rev->getId(),
1361                                 'rev_page' => $rev->getPage() ),
1362                         __METHOD__ );
1363         }
1364
1365         /**
1366          * Update the revision's rev_deleted field
1367          * @param Revision $rev
1368          * @param Title $title
1369          * @param int $bitfield new rev_deleted bitfield value
1370          */
1371         function updateArchive( $rev, $title, $bitfield ) {
1372                 $this->dbw->update( 'archive',
1373                         array( 'ar_deleted' => $bitfield ),
1374                         array( 'ar_namespace' => $title->getNamespace(),
1375                                 'ar_title'     => $title->getDBKey(),
1376                                 'ar_timestamp' => $this->dbw->timestamp( $rev->getTimestamp() ),
1377                                 'ar_rev_id' => $rev->getId() ),
1378                         __METHOD__ );
1379         }
1380
1381         /**
1382          * Update the images's oi_deleted field
1383          * @param File $file
1384          * @param int $bitfield new rev_deleted bitfield value
1385          */
1386         function updateOldFiles( $file, $bitfield ) {
1387                 $this->dbw->update( 'oldimage',
1388                         array( 'oi_deleted' => $bitfield ),
1389                         array( 'oi_name' => $file->getName(),
1390                                 'oi_timestamp' => $this->dbw->timestamp( $file->getTimestamp() ) ),
1391                         __METHOD__ );
1392         }
1393
1394         /**
1395          * Update the images's fa_deleted field
1396          * @param ArchivedFile $file
1397          * @param int $bitfield new rev_deleted bitfield value
1398          */
1399         function updateArchFiles( $file, $bitfield ) {
1400                 $this->dbw->update( 'filearchive',
1401                         array( 'fa_deleted' => $bitfield ),
1402                         array( 'fa_id' => $file->getId() ),
1403                         __METHOD__ );
1404         }
1405
1406         /**
1407          * Update the logging log_deleted field
1408          * @param Row $row
1409          * @param int $bitfield new rev_deleted bitfield value
1410          */
1411         function updateLogs( $row, $bitfield ) {
1412                 $this->dbw->update( 'logging',
1413                         array( 'log_deleted' => $bitfield ),
1414                         array( 'log_id' => $row->log_id ),
1415                         __METHOD__ );
1416         }
1417
1418         /**
1419          * Update the revision's recentchanges record if fields have been hidden
1420          * @param Revision $rev
1421          * @param int $bitfield new rev_deleted bitfield value
1422          */
1423         function updateRecentChangesEdits( $rev, $bitfield ) {
1424                 $this->dbw->update( 'recentchanges',
1425                         array( 'rc_deleted' => $bitfield,
1426                                    'rc_patrolled' => 1 ),
1427                         array( 'rc_this_oldid' => $rev->getId(),
1428                                 'rc_timestamp' => $this->dbw->timestamp( $rev->getTimestamp() ) ),
1429                         __METHOD__ );
1430         }
1431
1432         /**
1433          * Update the revision's recentchanges record if fields have been hidden
1434          * @param Row $row
1435          * @param int $bitfield new rev_deleted bitfield value
1436          */
1437         function updateRecentChangesLog( $row, $bitfield ) {
1438                 $this->dbw->update( 'recentchanges',
1439                         array( 'rc_deleted' => $bitfield,
1440                                    'rc_patrolled' => 1 ),
1441                         array( 'rc_logid' => $row->log_id,
1442                                 'rc_timestamp' => $row->log_timestamp ),
1443                         __METHOD__ );
1444         }
1445
1446         /**
1447          * Touch the page's cache invalidation timestamp; this forces cached
1448          * history views to refresh, so any newly hidden or shown fields will
1449          * update properly.
1450          * @param Title $title
1451          */
1452         function updatePage( $title ) {
1453                 $title->invalidateCache();
1454                 $title->purgeSquid();
1455                 $title->touchLinks();
1456                 // Extensions that require referencing previous revisions may need this
1457                 wfRunHooks( 'ArticleRevisionVisiblitySet', array( &$title ) );
1458         }
1459
1460         /**
1461          * Checks for a change in the bitfield for a certain option and updates the
1462          * provided array accordingly.
1463          *
1464          * @param String $desc Description to add to the array if the option was
1465          * enabled / disabled.
1466          * @param int $field The bitmask describing the single option.
1467          * @param int $diff The xor of the old and new bitfields.
1468          * @param array $arr The array to update.
1469          */
1470         protected static function checkItem( $desc, $field, $diff, $new, &$arr ) {
1471                 if( $diff & $field ) {
1472                         $arr[ ( $new & $field ) ? 0 : 1 ][] = $desc;
1473                 }
1474         }
1475
1476         /**
1477          * Gets an array describing the changes made to the visibilit of the revision.
1478          * If the resulting array is $arr, then $arr[0] will contain an array of strings
1479          * describing the items that were hidden, $arr[2] will contain an array of strings
1480          * describing the items that were unhidden, and $arr[3] will contain an array with
1481          * a single string, which can be one of "applied restrictions to sysops",
1482          * "removed restrictions from sysops", or null.
1483          *
1484          * @param int $n The new bitfield.
1485          * @param int $o The old bitfield.
1486          * @return An array as described above.
1487          */
1488         protected static function getChanges( $n, $o ) {
1489                 $diff = $n ^ $o;
1490                 $ret = array( 0 => array(), 1 => array(), 2 => array() );
1491                 // Build bitfield changes in language
1492                 self::checkItem( wfMsgForContent( 'revdelete-content' ),
1493                         Revision::DELETED_TEXT, $diff, $n, $ret );
1494                 self::checkItem( wfMsgForContent( 'revdelete-summary' ),
1495                         Revision::DELETED_COMMENT, $diff, $n, $ret );
1496                 self::checkItem( wfMsgForContent( 'revdelete-uname' ),
1497                         Revision::DELETED_USER, $diff, $n, $ret );
1498                 // Restriction application to sysops
1499                 if( $diff & Revision::DELETED_RESTRICTED ) {
1500                         if( $n & Revision::DELETED_RESTRICTED )
1501                                 $ret[2][] = wfMsgForContent( 'revdelete-restricted' );
1502                         else
1503                                 $ret[2][] = wfMsgForContent( 'revdelete-unrestricted' );
1504                 }
1505                 return $ret;
1506         }
1507
1508         /**
1509          * Gets a log message to describe the given revision visibility change. This
1510          * message will be of the form "[hid {content, edit summary, username}];
1511          * [unhid {...}][applied restrictions to sysops] for $count revisions: $comment".
1512          *
1513          * @param int $count The number of effected revisions.
1514          * @param int $nbitfield The new bitfield for the revision.
1515          * @param int $obitfield The old bitfield for the revision.
1516          * @param bool $isForLog
1517          */
1518         public static function getLogMessage( $count, $nbitfield, $obitfield, $isForLog = false ) {
1519                 global $wgLang;
1520                 $s = '';
1521                 $changes = self::getChanges( $nbitfield, $obitfield );
1522                 if( count( $changes[0] ) ) {
1523                         $s .= wfMsgForContent ( 'revdelete-hid', implode ( ', ', $changes[0] ) );
1524                 }
1525                 if( count( $changes[1] ) ) {
1526                         if ($s) $s .= '; ';
1527                         $s .= wfMsgForContent ( 'revdelete-unhid', implode ( ', ', $changes[1] ) );
1528                 }
1529                 if( count( $changes[2] ) ) {
1530                         $s .= $s ? ' (' . $changes[2][0] . ')' : $changes[2][0];
1531                 }
1532                 $msg = $isForLog ? 'logdelete-log-message' : 'revdelete-log-message';
1533                 return wfMsgExt( $msg, array( 'parsemag', 'content' ), $s, $wgLang->formatNum($count) );
1534
1535         }
1536
1537         /**
1538          * Record a log entry on the action
1539          * @param Title $title, page where item was removed from
1540          * @param int $count the number of revisions altered for this page
1541          * @param int $nbitfield the new _deleted value
1542          * @param int $obitfield the old _deleted value
1543          * @param string $comment
1544          * @param Title $target, the relevant page
1545          * @param string $param, URL param
1546          * @param Array $items
1547          */
1548         function updateLog( $title, $count, $nbitfield, $obitfield, $comment, $target,
1549                 $param, $items = array() )
1550         {
1551                 // Put things hidden from sysops in the oversight log
1552                 $logtype = ( ($nbitfield | $obitfield) & Revision::DELETED_RESTRICTED ) ?
1553                         'suppress' : 'delete';
1554                 $log = new LogPage( $logtype );
1555                 $itemCSV = implode(',',$items);
1556
1557                 if( $param == 'logid' ) {
1558                         $params = array( $itemCSV, "ofield={$obitfield}", "nfield={$nbitfield}" );
1559                         $log->addEntry( 'event', $title, $comment, $params );
1560                 } else {
1561                         // Add params for effected page and ids
1562                         $params = array( $param, $itemCSV, "ofield={$obitfield}", "nfield={$nbitfield}" );
1563                         $log->addEntry( 'revision', $title, $comment, $params );
1564                 }
1565         }
1566 }