includes/specials/SpecialRevisiondelete.php

   1 <?php
   2 /**
   3  * Special page allowing users with the appropriate permissions to view
   4  * and hide revisions. Log items can also be hidden.
   5  *
   6  * @file
   7  * @ingroup SpecialPage
   8  */
   9
  10 class SpecialRevisionDelete extends UnlistedSpecialPage {
  11
  12         public function __construct() {
  13                 parent::__construct( 'Revisiondelete', 'deleterevision' );
  14                 $this->includable( false );
  15         }
  16
  17         public function execute( $par ) {
  18                 global $wgOut, $wgUser, $wgRequest;
  19                 if( wfReadOnly() ) {
  20                         $wgOut->readOnlyPage();
  21                         return;
  22                 }
  23                 if( !$wgUser->isAllowed( 'deleterevision' ) ) {
  24                         $wgOut->permissionRequired( 'deleterevision' );
  25                         return;
  26                 }
  27                 $this->skin =& $wgUser->getSkin();
  28                 $this->setHeaders();
  29                 $this->outputHeader();
  30                 $this->wasPosted = $wgRequest->wasPosted();
  31                 # Set title and such
  32                 $this->target = $wgRequest->getText( 'target' );
  33                 # Handle our many different possible input types.
  34                 # Use CVS, since the cgi handling will break on arrays.
  35                 $this->oldids = array_filter( explode( ',', $wgRequest->getVal('oldid') ) );
  36                 $this->artimestamps = array_filter( explode( ',', $wgRequest->getVal('artimestamp') ) );
  37                 $this->logids = array_filter( explode( ',', $wgRequest->getVal('logid') ) );
  38                 $this->oldimgs = array_filter( explode( ',', $wgRequest->getVal('oldimage') ) );
  39                 $this->fileids = array_filter( explode( ',', $wgRequest->getVal('fileid') ) );
  40                 # For reviewing deleted files...
  41                 $this->file = $wgRequest->getVal( 'file' );
  42                 # Only one target set at a time please!
  43                 $i = (bool)$this->file + (bool)$this->oldids + (bool)$this->logids
  44                         + (bool)$this->artimestamps + (bool)$this->fileids + (bool)$this->oldimgs;
  45                 # No targets?
  46                 if( $i == 0 ) {
  47                         $wgOut->showErrorPage( 'notargettitle', 'notargettext' );
  48                         return;
  49                 }
  50                 # Too many targets?
  51                 if( $i !== 1 ) {
  52                         $wgOut->showErrorPage( 'revdelete-toomanytargets-title', 'revdelete-toomanytargets-text' );
  53                         return;
  54                 }
  55                 $this->page = Title::newFromUrl( $this->target );
  56                 # If we have revisions, get the title from the first one
  57                 # since they should all be from the same page. This allows
  58                 # for more flexibility with page moves...
  59                 if( count($this->oldids) > 0 ) {
  60                         $rev = Revision::newFromId( $this->oldids[0] );
  61                         $this->page = $rev ? $rev->getTitle() : $this->page;
  62                 }
  63                 # We need a target page!
  64                 if( is_null($this->page) ) {
  65                         $wgOut->addWikiMsg( 'undelete-header' );
  66                         return;
  67                 }
  68                 # Logs must have a type given
  69                 if( $this->logids && !strpos($this->page->getDBKey(),'/') ) {
  70                         $wgOut->showErrorPage( 'revdelete-nologtype-title', 'revdelete-nologtype-text' );
  71                         return;
  72                 }
  73                 # For reviewing deleted files...show it now if allowed
  74                 if( $this->file ) {
  75                         $oimage = RepoGroup::singleton()->getLocalRepo()->newFromArchiveName( $this->page, $this->file );
  76                         $oimage->load();
  77                         // Check if user is allowed to see this file
  78                         if( !$oimage->userCan(File::DELETED_FILE) ) {
  79                                 $wgOut->permissionRequired( 'suppressrevision' );
  80                         } else {
  81                                 $this->showFile( $this->file );
  82                         }
  83                         return;
  84                 }
  85                 # Give a link to the logs/hist for this page
  86                 if( !is_null($this->page) && $this->page->getNamespace() > -1 ) {
  87                         $links = array();
  88
  89                         $logtitle = SpecialPage::getTitleFor( 'Log' );
  90                         $links[] = $this->skin->makeKnownLinkObj( $logtitle, wfMsgHtml( 'viewpagelogs' ),
  91                                 wfArrayToCGI( array( 'page' => $this->page->getPrefixedUrl() ) ) );
  92                         # Give a link to the page history
  93                         $links[] = $this->skin->makeKnownLinkObj( $this->page, wfMsgHtml( 'pagehist' ),
  94                                 wfArrayToCGI( array( 'action' => 'history' ) ) );
  95                         # Link to deleted edits
  96                         if( $wgUser->isAllowed('undelete') ) {
  97                                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
  98                                 $links[] = $this->skin->makeKnownLinkObj( $undelete, wfMsgHtml( 'deletedhist' ),
  99                                         wfArrayToCGI( array( 'target' => $this->page->getPrefixedDBkey() ) ) );
 100                         }
 101                         # Logs themselves don't have histories or archived revisions
 102                         $wgOut->setSubtitle( '<p>'.implode($links,' / ').'</p>' );
 103                 }
 104                 # Lock the operation and the form context
 105                 $this->secureOperation();
 106                 # Either submit or create our form
 107                 if( $this->wasPosted ) {
 108                         $this->submit( $wgRequest );
 109                 } else if( $this->deleteKey == 'oldid' || $this->deleteKey == 'artimestamp' ) {
 110                         $this->showRevs();
 111                 } else if( $this->deleteKey == 'fileid' || $this->deleteKey == 'oldimage' ) {
 112                         $this->showImages();
 113                 } else if( $this->deleteKey == 'logid' ) {
 114                         $this->showLogItems();
 115                 }
 116                 $qc = $this->getLogQueryCond();
 117                 # Show relevant lines from the deletion log
 118                 $wgOut->addHTML( "<h2>" . htmlspecialchars( LogPage::logName( 'delete' ) ) . "</h2>\n" );
 119                 LogEventsList::showLogExtract( $wgOut, 'delete', $this->page->getPrefixedText(), '', 25, $qc );
 120                 # Show relevant lines from the suppression log
 121                 if( $wgUser->isAllowed( 'suppressionlog' ) ) {
 122                         $wgOut->addHTML( "<h2>" . htmlspecialchars( LogPage::logName( 'suppress' ) ) . "</h2>\n" );
 123                         LogEventsList::showLogExtract( $wgOut, 'suppress', $this->page->getPrefixedText(), '', 25, $qc );
 124                 }
 125         }
 126
 127         private function getLogQueryCond() {
 128                 $ids = $safeIds = array();
 129                 switch( $this->deleteKey ) {
 130                         case 'oldid':
 131                                 $ids = $this->oldids;
 132                                 break;
 133                         case 'artimestamp':
 134                                 $ids = $this->artimestamps;
 135                                 break;
 136                         case 'oldimage':
 137                                 $ids = $this->oldimgs;
 138                                 break;
 139                         case 'fileid':
 140                                 $ids = $this->fileids;
 141                                 break;
 142                         case 'logid':
 143                                 $ids = $this->logids;
 144                                 break;
 145                 }
 146                 // Revision delete logs
 147                 $conds = array( 'log_action' => 'revision' );
 148                 // Just get the whole log if there are a lot if items
 149                 if( count($ids) > 20 ) return $conds;
 150                 // Digit chars only
 151                 foreach( $ids as $id ) {
 152                         if( preg_match( '/^\d+$/', $id, $m ) ) {
 153                                 $safeIds[] = $m[0];
 154                         }
 155                 }
 156                 // Format is <id1,id2,i3...>
 157                 if( count($safeIds) ) {
 158                         $conds[] = "log_params RLIKE '(^|\n|,)(".implode('|',$safeIds).")(,|$)'";
 159                 }
 160                 return $conds;
 161         }
 162
 163         private function secureOperation() {
 164                 global $wgUser;
 165                 $this->deleteKey = '';
 166                 // At this point, we should only have one of these
 167                 if( $this->oldids ) {
 168                         $this->revisions = $this->oldids;
 169                         $hide_content_name = array( 'revdelete-hide-text', 'wpHideText', Revision::DELETED_TEXT );
 170                         $this->deleteKey = 'oldid';
 171                 } else if( $this->artimestamps ) {
 172                         $this->archrevs = $this->artimestamps;
 173                         $hide_content_name = array( 'revdelete-hide-text', 'wpHideText', Revision::DELETED_TEXT );
 174                         $this->deleteKey = 'artimestamp';
 175                 } else if( $this->oldimgs ) {
 176                         $this->ofiles = $this->oldimgs;
 177                         $hide_content_name = array( 'revdelete-hide-image', 'wpHideImage', File::DELETED_FILE );
 178                         $this->deleteKey = 'oldimage';
 179                 } else if( $this->fileids ) {
 180                         $this->afiles = $this->fileids;
 181                         $hide_content_name = array( 'revdelete-hide-image', 'wpHideImage', File::DELETED_FILE );
 182                         $this->deleteKey = 'fileid';
 183                 } else if( $this->logids ) {
 184                         $this->events = $this->logids;
 185                         $hide_content_name = array( 'revdelete-hide-name', 'wpHideName', LogPage::DELETED_ACTION );
 186                         $this->deleteKey = 'logid';
 187                 }
 188                 // Our checkbox messages depends one what we are doing,
 189                 // e.g. we don't hide "text" for logs or images
 190                 $this->checks = array(
 191                         $hide_content_name,
 192                         array( 'revdelete-hide-comment', 'wpHideComment', Revision::DELETED_COMMENT ),
 193                         array( 'revdelete-hide-user', 'wpHideUser', Revision::DELETED_USER )
 194                 );
 195                 if( $wgUser->isAllowed('suppressrevision') ) {
 196                         $this->checks[] = array( 'revdelete-hide-restricted',
 197                                 'wpHideRestricted', Revision::DELETED_RESTRICTED );
 198                 }
 199         }
 200
 201         /**
 202          * Show a deleted file version requested by the visitor.
 203          */
 204         private function showFile( $key ) {
 205                 global $wgOut, $wgRequest;
 206                 $wgOut->disable();
 207
 208                 # We mustn't allow the output to be Squid cached, otherwise
 209                 # if an admin previews a deleted image, and it's cached, then
 210                 # a user without appropriate permissions can toddle off and
 211                 # nab the image, and Squid will serve it
 212                 $wgRequest->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
 213                 $wgRequest->response()->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
 214                 $wgRequest->response()->header( 'Pragma: no-cache' );
 215
 216                 $store = FileStore::get( 'deleted' );
 217                 $store->stream( $key );
 218         }
 219
 220         /**
 221          * This lets a user set restrictions for live and archived revisions
 222          */
 223         private function showRevs() {
 224                 global $wgOut, $wgUser;
 225                 $UserAllowed = true;
 226
 227                 $count = ($this->deleteKey=='oldid') ?
 228                         count($this->revisions) : count($this->archrevs);
 229                 $wgOut->addWikiMsg( 'revdelete-selected', $this->page->getPrefixedText(), $count );
 230
 231                 $bitfields = 0;
 232                 $wgOut->addHTML( "<ul>" );
 233
 234                 $where = $revObjs = array();
 235                 $dbr = wfGetDB( DB_MASTER );
 236
 237                 $revisions = 0;
 238                 // Live revisions...
 239                 if( $this->deleteKey=='oldid' ) {
 240                         // Run through and pull all our data in one query
 241                         foreach( $this->revisions as $revid ) {
 242                                 $where[] = intval($revid);
 243                         }
 244                         $result = $dbr->select( array('revision','page'), '*',
 245                                 array(
 246                                         'rev_page' => $this->page->getArticleID(),
 247                                         'rev_id' => $where,
 248                                         'rev_page = page_id' ),
 249                                 __METHOD__ );
 250                         while( $row = $dbr->fetchObject( $result ) ) {
 251                                 $revObjs[$row->rev_id] = new Revision( $row );
 252                         }
 253                         foreach( $this->revisions as $revid ) {
 254                                 // Hiding top revisison is bad
 255                                 if( !isset($revObjs[$revid]) || $revObjs[$revid]->isCurrent() ) {
 256                                         continue;
 257                                 } else if( !$revObjs[$revid]->userCan(Revision::DELETED_RESTRICTED) ) {
 258                                 // If a rev is hidden from sysops
 259                                         if( !$this->wasPosted ) {
 260                                                 $wgOut->permissionRequired( 'suppressrevision' );
 261                                                 return;
 262                                         }
 263                                         $UserAllowed = false;
 264                                 }
 265                                 $revisions++;
 266                                 $wgOut->addHTML( $this->historyLine( $revObjs[$revid] ) );
 267                                 $bitfields |= $revObjs[$revid]->mDeleted;
 268                         }
 269                 // The archives...
 270                 } else {
 271                         // Run through and pull all our data in one query
 272                         foreach( $this->archrevs as $timestamp ) {
 273                                 $where[] = $dbr->timestamp( $timestamp );
 274                         }
 275                         $result = $dbr->select( 'archive', '*',
 276                                 array(
 277                                         'ar_namespace' => $this->page->getNamespace(),
 278                                         'ar_title' => $this->page->getDBKey(),
 279                                         'ar_timestamp' => $where ),
 280                                 __METHOD__ );
 281                         while( $row = $dbr->fetchObject( $result ) ) {
 282                                 $timestamp = wfTimestamp( TS_MW, $row->ar_timestamp );
 283                                 $revObjs[$timestamp] = new Revision( array(
 284                                         'page'       => $this->page->getArticleId(),
 285                                         'id'         => $row->ar_rev_id,
 286                                         'text'       => $row->ar_text_id,
 287                                         'comment'    => $row->ar_comment,
 288                                         'user'       => $row->ar_user,
 289                                         'user_text'  => $row->ar_user_text,
 290                                         'timestamp'  => $timestamp,
 291                                         'minor_edit' => $row->ar_minor_edit,
 292                                         'text_id'    => $row->ar_text_id,
 293                                         'deleted'    => $row->ar_deleted,
 294                                         'len'        => $row->ar_len) );
 295                         }
 296                         foreach( $this->archrevs as $timestamp ) {
 297                                 if( !isset($revObjs[$timestamp]) ) {
 298                                         continue;
 299                                 } else if( !$revObjs[$timestamp]->userCan(Revision::DELETED_RESTRICTED) ) {
 300                                 // If a rev is hidden from sysops
 301                                         if( !$this->wasPosted ) {
 302                                                 $wgOut->permissionRequired( 'suppressrevision' );
 303                                                 return;
 304                                         }
 305                                         $UserAllowed = false;
 306                                 }
 307                                 $revisions++;
 308                                 $wgOut->addHTML( $this->historyLine( $revObjs[$timestamp] ) );
 309                                 $bitfields |= $revObjs[$timestamp]->mDeleted;
 310                         }
 311                 }
 312                 if( !$revisions ) {
 313                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 314                         return;
 315                 }
 316
 317                 $wgOut->addHTML( "</ul>" );
 318                 // Explanation text
 319                 $this->addUsageText();
 320
 321                 // Normal sysops can always see what they did, but can't always change it
 322                 if( !$UserAllowed ) return;
 323
 324                 $items = array(
 325                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 326                         Xml::submitButton( wfMsg( 'revdelete-submit' ) )
 327                 );
 328                 $hidden = array(
 329                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 330                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 331                         Xml::hidden( 'type', $this->deleteKey )
 332                 );
 333                 if( $this->deleteKey=='oldid' ) {
 334                         $hidden[] = Xml::hidden( 'oldid', implode(',',$this->oldids) );
 335                 } else {
 336                         $hidden[] = Xml::hidden( 'artimestamp', implode(',',$this->artimestamps) );
 337                 }
 338                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
 339                 $wgOut->addHTML(
 340                         Xml::openElement( 'form', array( 'method' => 'post',
 341                                 'action' => $special->getLocalUrl( 'action=submit' ),
 342                                 'id' => 'mw-revdel-form-revisions' ) ) .
 343                         Xml::openElement( 'fieldset' ) .
 344                         xml::element( 'legend', null,  wfMsg( 'revdelete-legend' ) )
 345                 );
 346
 347                 $wgOut->addHTML( $this->buildCheckBoxes( $bitfields ) );
 348                 foreach( $items as $item ) {
 349                         $wgOut->addHTML( Xml::tags( 'p', null, $item ) );
 350                 }
 351                 foreach( $hidden as $item ) {
 352                         $wgOut->addHTML( $item );
 353                 }
 354                 $wgOut->addHTML(
 355                         Xml::closeElement( 'fieldset' ) .
 356                         Xml::closeElement( 'form' ) . "\n"
 357                 );
 358         }
 359
 360         /**
 361          * This lets a user set restrictions for archived images
 362          */
 363         private function showImages() {
 364                 global $wgOut, $wgUser, $wgLang;
 365                 $UserAllowed = true;
 366
 367                 $count = ($this->deleteKey=='oldimage') ? count($this->ofiles) : count($this->afiles);
 368                 $wgOut->addWikiMsg( 'revdelete-selected', $this->page->getPrefixedText(),
 369                         $wgLang->formatNum($count) );
 370
 371                 $bitfields = 0;
 372                 $wgOut->addHTML( "<ul>" );
 373
 374                 $where = $filesObjs = array();
 375                 $dbr = wfGetDB( DB_MASTER );
 376                 // Live old revisions...
 377                 $revisions = 0;
 378                 if( $this->deleteKey=='oldimage' ) {
 379                         // Run through and pull all our data in one query
 380                         foreach( $this->ofiles as $timestamp ) {
 381                                 $where[] = $timestamp.'!'.$this->page->getDBKey();
 382                         }
 383                         $result = $dbr->select( 'oldimage', '*',
 384                                 array(
 385                                         'oi_name' => $this->page->getDBKey(),
 386                                         'oi_archive_name' => $where ),
 387                                 __METHOD__ );
 388                         while( $row = $dbr->fetchObject( $result ) ) {
 389                                 $filesObjs[$row->oi_archive_name] = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
 390                                 $filesObjs[$row->oi_archive_name]->user = $row->oi_user;
 391                                 $filesObjs[$row->oi_archive_name]->user_text = $row->oi_user_text;
 392                         }
 393                         // Check through our images
 394                         foreach( $this->ofiles as $timestamp ) {
 395                                 $archivename = $timestamp.'!'.$this->page->getDBKey();
 396                                 if( !isset($filesObjs[$archivename]) ) {
 397                                         continue;
 398                                 } else if( !$filesObjs[$archivename]->userCan(File::DELETED_RESTRICTED) ) {
 399                                         // If a rev is hidden from sysops
 400                                         if( !$this->wasPosted ) {
 401                                                 $wgOut->permissionRequired( 'suppressrevision' );
 402                                                 return;
 403                                         }
 404                                         $UserAllowed = false;
 405                                 }
 406                                 $revisions++;
 407                                 // Inject history info
 408                                 $wgOut->addHTML( $this->fileLine( $filesObjs[$archivename] ) );
 409                                 $bitfields |= $filesObjs[$archivename]->deleted;
 410                         }
 411                 // Archived files...
 412                 } else {
 413                         // Run through and pull all our data in one query
 414                         foreach( $this->afiles as $id ) {
 415                                 $where[] = intval($id);
 416                         }
 417                         $result = $dbr->select( 'filearchive', '*',
 418                                 array(
 419                                         'fa_name' => $this->page->getDBKey(),
 420                                         'fa_id' => $where ),
 421                                 __METHOD__ );
 422                         while( $row = $dbr->fetchObject( $result ) ) {
 423                                 $filesObjs[$row->fa_id] = ArchivedFile::newFromRow( $row );
 424                         }
 425
 426                         foreach( $this->afiles as $fileid ) {
 427                                 if( !isset($filesObjs[$fileid]) ) {
 428                                         continue;
 429                                 } else if( !$filesObjs[$fileid]->userCan(File::DELETED_RESTRICTED) ) {
 430                                         // If a rev is hidden from sysops
 431                                         if( !$this->wasPosted ) {
 432                                                 $wgOut->permissionRequired( 'suppressrevision' );
 433                                                 return;
 434                                         }
 435                                         $UserAllowed = false;
 436                                 }
 437                                 $revisions++;
 438                                 // Inject history info
 439                                 $wgOut->addHTML( $this->archivedfileLine( $filesObjs[$fileid] ) );
 440                                 $bitfields |= $filesObjs[$fileid]->deleted;
 441                         }
 442                 }
 443                 if( !$revisions ) {
 444                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 445                         return;
 446                 }
 447
 448                 $wgOut->addHTML( "</ul>" );
 449                 // Explanation text
 450                 $this->addUsageText();
 451                 // Normal sysops can always see what they did, but can't always change it
 452                 if( !$UserAllowed ) return;
 453
 454                 $items = array(
 455                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 456                         Xml::submitButton( wfMsg( 'revdelete-submit' ) )
 457                 );
 458                 $hidden = array(
 459                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 460                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 461                         Xml::hidden( 'type', $this->deleteKey )
 462                 );
 463                 if( $this->deleteKey=='oldimage' ) {
 464                         $hidden[] = Xml::hidden( 'oldimage', implode(',',$this->oldimgs) );
 465                 } else {
 466                         $hidden[] = Xml::hidden( 'fileid', implode(',',$this->fileids) );
 467                 }
 468                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
 469                 $wgOut->addHTML(
 470                         Xml::openElement( 'form', array( 'method' => 'post',
 471                                 'action' => $special->getLocalUrl( 'action=submit' ),
 472                                 'id' => 'mw-revdel-form-filerevisions' )
 473                         ) .
 474                         Xml::fieldset( wfMsg( 'revdelete-legend' ) )
 475                 );
 476
 477                 $wgOut->addHTML( $this->buildCheckBoxes( $bitfields ) );
 478                 foreach( $items as $item ) {
 479                         $wgOut->addHTML( "<p>$item</p>" );
 480                 }
 481                 foreach( $hidden as $item ) {
 482                         $wgOut->addHTML( $item );
 483                 }
 484
 485                 $wgOut->addHTML(
 486                         Xml::closeElement( 'fieldset' ) .
 487                         Xml::closeElement( 'form' ) . "\n"
 488                 );
 489         }
 490
 491         /**
 492          * This lets a user set restrictions for log items
 493          */
 494         private function showLogItems() {
 495                 global $wgOut, $wgUser, $wgMessageCache, $wgLang;
 496                 $UserAllowed = true;
 497
 498                 $wgOut->addWikiMsg( 'logdelete-selected', $wgLang->formatNum( count($this->events) ) );
 499
 500                 $bitfields = 0;
 501                 $wgOut->addHTML( "<ul>" );
 502
 503                 $where = $logRows = array();
 504                 $dbr = wfGetDB( DB_MASTER );
 505                 // Run through and pull all our data in one query
 506                 $logItems = 0;
 507                 foreach( $this->events as $logid ) {
 508                         $where[] = intval($logid);
 509                 }
 510                 list($log,$logtype) = explode( '/',$this->page->getDBKey(), 2 );
 511                 $result = $dbr->select( 'logging', '*',
 512                         array(
 513                                 'log_type' => $logtype,
 514                                 'log_id' => $where ),
 515                         __METHOD__ );
 516                 while( $row = $dbr->fetchObject( $result ) ) {
 517                         $logRows[$row->log_id] = $row;
 518                 }
 519                 $wgMessageCache->loadAllMessages();
 520                 foreach( $this->events as $logid ) {
 521                         // Don't hide from oversight log!!!
 522                         if( !isset( $logRows[$logid] ) || $logRows[$logid]->log_type=='suppress' ) {
 523                                 continue;
 524                         } else if( !LogEventsList::userCan( $logRows[$logid],Revision::DELETED_RESTRICTED) ) {
 525                         // If an event is hidden from sysops
 526                                 if( !$this->wasPosted ) {
 527                                         $wgOut->permissionRequired( 'suppressrevision' );
 528                                         return;
 529                                 }
 530                                 $UserAllowed = false;
 531                         }
 532                         $logItems++;
 533                         $wgOut->addHTML( $this->logLine( $logRows[$logid] ) );
 534                         $bitfields |= $logRows[$logid]->log_deleted;
 535                 }
 536                 if( !$logItems ) {
 537                         $wgOut->showErrorPage( 'revdelete-nologid-title', 'revdelete-nologid-text' );
 538                         return;
 539                 }
 540
 541                 $wgOut->addHTML( "</ul>" );
 542                 // Explanation text
 543                 $this->addUsageText();
 544                 // Normal sysops can always see what they did, but can't always change it
 545                 if( !$UserAllowed ) return;
 546
 547                 $items = array(
 548                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 549                         Xml::submitButton( wfMsg( 'revdelete-submit' ) ) );
 550                 $hidden = array(
 551                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 552                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 553                         Xml::hidden( 'type', $this->deleteKey ),
 554                         Xml::hidden( 'logid', implode(',',$this->logids) )
 555                 );
 556
 557                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
 558                 $wgOut->addHTML(
 559                         Xml::openElement( 'form', array( 'method' => 'post',
 560                                 'action' => $special->getLocalUrl( 'action=submit' ), 'id' => 'mw-revdel-form-logs' ) ) .
 561                         Xml::fieldset( wfMsg( 'revdelete-legend' ) )
 562                 );
 563
 564                 $wgOut->addHTML( $this->buildCheckBoxes( $bitfields ) );
 565                 foreach( $items as $item ) {
 566                         $wgOut->addHTML( "<p>$item</p>" );
 567                 }
 568                 foreach( $hidden as $item ) {
 569                         $wgOut->addHTML( $item );
 570                 }
 571
 572                 $wgOut->addHTML(
 573                         Xml::closeElement( 'fieldset' ) .
 574                         Xml::closeElement( 'form' ) . "\n"
 575                 );
 576         }
 577
 578         private function addUsageText() {
 579                 global $wgOut, $wgUser;
 580                 $wgOut->addWikiMsg( 'revdelete-text' );
 581                 if( $wgUser->isAllowed( 'suppressrevision' ) ) {
 582                         $wgOut->addWikiMsg( 'revdelete-suppress-text' );
 583                 }
 584         }
 585
 586         /**
 587         * @param int $bitfields, aggregate bitfield of all the bitfields
 588         * @returns string HTML
 589         */
 590         private function buildCheckBoxes( $bitfields ) {
 591                 $html = '';
 592                 // FIXME: all items checked for just one rev are checked, even if not set for the others
 593                 foreach( $this->checks as $item ) {
 594                         list( $message, $name, $field ) = $item;
 595                         $line = Xml::tags( 'div', null, Xml::checkLabel( wfMsg($message), $name, $name,
 596                                 $bitfields & $field ) );
 597                         if( $field == Revision::DELETED_RESTRICTED ) $line = "<b>$line</b>";
 598                         $html .= $line;
 599                 }
 600                 return $html;
 601         }
 602
 603         /**
 604          * @param Revision $rev
 605          * @returns string
 606          */
 607         private function historyLine( $rev ) {
 608                 global $wgLang, $wgUser;
 609
 610                 $date = $wgLang->timeanddate( $rev->getTimestamp() );
 611                 $difflink = $del = '';
 612                 // Live revisions
 613                 if( $this->deleteKey=='oldid' ) {
 614                         $tokenParams = '&unhide=1&token='.urlencode( $wgUser->editToken( $rev->getId() ) );
 615                         $revlink = $this->skin->makeLinkObj( $this->page, $date, 'oldid='.$rev->getId() . $tokenParams );
 616                         $difflink = '(' . $this->skin->makeKnownLinkObj( $this->page, wfMsgHtml('diff'),
 617                                 'diff=' . $rev->getId() . '&oldid=prev' . $tokenParams ) . ')';
 618                 // Archived revisions
 619                 } else {
 620                         $undelete = SpecialPage::getTitleFor( 'Undelete' );
 621                         $target = $this->page->getPrefixedText();
 622                         $revlink = $this->skin->makeLinkObj( $undelete, $date,
 623                                 "target=$target&timestamp=" . $rev->getTimestamp() );
 624                         $difflink = '(' . $this->skin->makeKnownLinkObj( $undelete, wfMsgHtml('diff'),
 625                                 "target=$target&diff=prev&timestamp=" . $rev->getTimestamp() ) . ')';
 626                 }
 627                 // Check permissions; items may be "suppressed"
 628                 if( $rev->isDeleted(Revision::DELETED_TEXT) ) {
 629                         $revlink = '<span class="history-deleted">'.$revlink.'</span>';
 630                         $del = ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 631                         if( !$rev->userCan(Revision::DELETED_TEXT) ) {
 632                                 $revlink = '<span class="history-deleted">'.$date.'</span>';
 633                                 $difflink = '(' . wfMsgHtml('diff') . ')';
 634                         }
 635                 }
 636                 $userlink = $this->skin->revUserLink( $rev );
 637                 $comment = $this->skin->revComment( $rev );
 638
 639                 return "<li>$difflink $revlink $userlink $comment{$del}</li>";
 640         }
 641
 642         /**
 643          * @param File $file
 644          * @returns string
 645          */
 646         private function fileLine( $file ) {
 647                 global $wgLang, $wgTitle;
 648
 649                 $target = $this->page->getPrefixedText();
 650                 $date = $wgLang->timeanddate( $file->getTimestamp(), true  );
 651
 652                 $del = '';
 653                 # Hidden files...
 654                 if( $file->isDeleted(File::DELETED_FILE) ) {
 655                         $del = ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 656                         if( !$file->userCan(File::DELETED_FILE) ) {
 657                                 $pageLink = $date;
 658                         } else {
 659                                 $pageLink = $this->skin->makeKnownLinkObj( $wgTitle, $date,
 660                                         "target=$target&file=$file->sha1.".$file->getExtension() );
 661                         }
 662                         $pageLink = '<span class="history-deleted">' . $pageLink . '</span>';
 663                 # Regular files...
 664                 } else {
 665                         $url = $file->getUrlRel();
 666                         $pageLink = "<a href=\"{$url}\">{$date}</a>";
 667                 }
 668
 669                 $data = wfMsg( 'widthheight',
 670                                         $wgLang->formatNum( $file->getWidth() ),
 671                                         $wgLang->formatNum( $file->getHeight() ) ) .
 672                         ' (' . wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $file->getSize() ) ) . ')';
 673                 $data = htmlspecialchars( $data );
 674
 675                 return "<li>$pageLink ".$this->fileUserTools( $file )." $data ".$this->fileComment( $file )."$del</li>";
 676         }
 677
 678         /**
 679          * @param ArchivedFile $file
 680          * @returns string
 681          */
 682         private function archivedfileLine( $file ) {
 683                 global $wgLang;
 684
 685                 $target = $this->page->getPrefixedText();
 686                 $date = $wgLang->timeanddate( $file->getTimestamp(), true  );
 687
 688                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 689                 $pageLink = $this->skin->makeKnownLinkObj( $undelete, $date, "target=$target&file={$file->getKey()}" );
 690
 691                 $del = '';
 692                 if( $file->isDeleted(File::DELETED_FILE) ) {
 693                         $del = ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 694                 }
 695
 696                 $data = wfMsg( 'widthheight',
 697                                         $wgLang->formatNum( $file->getWidth() ),
 698                                         $wgLang->formatNum( $file->getHeight() ) ) .
 699                         ' (' . wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $file->getSize() ) ) . ')';
 700                 $data = htmlspecialchars( $data );
 701
 702                 return "<li> $pageLink ".$this->fileUserTools( $file )." $data ".$this->fileComment( $file )."$del</li>";
 703         }
 704
 705         /**
 706          * @param Array $row row
 707          * @returns string
 708          */
 709         private function logLine( $row ) {
 710                 global $wgLang;
 711
 712                 $date = $wgLang->timeanddate( $row->log_timestamp );
 713                 $paramArray = LogPage::extractParams( $row->log_params );
 714                 $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 715
 716                 $logtitle = SpecialPage::getTitleFor( 'Log' );
 717                 $loglink = $this->skin->makeKnownLinkObj( $logtitle, wfMsgHtml( 'log' ),
 718                         wfArrayToCGI( array( 'page' => $title->getPrefixedUrl() ) ) );
 719                 // Action text
 720                 if( !LogEventsList::userCan($row,LogPage::DELETED_ACTION) ) {
 721                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 722                 } else {
 723                         $action = LogPage::actionText( $row->log_type, $row->log_action, $title,
 724                                 $this->skin, $paramArray, true, true );
 725                         if( $row->log_deleted & LogPage::DELETED_ACTION )
 726                                 $action = '<span class="history-deleted">' . $action . '</span>';
 727                 }
 728                 // User links
 729                 $userLink = $this->skin->userLink( $row->log_user, User::WhoIs($row->log_user) );
 730                 if( LogEventsList::isDeleted($row,LogPage::DELETED_USER) ) {
 731                         $userLink = '<span class="history-deleted">' . $userLink . '</span>';
 732                 }
 733                 // Comment
 734                 $comment = $wgLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
 735                 if( LogEventsList::isDeleted($row,LogPage::DELETED_COMMENT) ) {
 736                         $comment = '<span class="history-deleted">' . $comment . '</span>';
 737                 }
 738                 return "<li>($loglink) $date $userLink $action $comment</li>";
 739         }
 740
 741         /**
 742          * Generate a user tool link cluster if the current user is allowed to view it
 743          * @param ArchivedFile $file
 744          * @return string HTML
 745          */
 746         private function fileUserTools( $file ) {
 747                 if( $file->userCan( Revision::DELETED_USER ) ) {
 748                         $link = $this->skin->userLink( $file->user, $file->user_text ) .
 749                                 $this->skin->userToolLinks( $file->user, $file->user_text );
 750                 } else {
 751                         $link = wfMsgHtml( 'rev-deleted-user' );
 752                 }
 753                 if( $file->isDeleted( Revision::DELETED_USER ) ) {
 754                         return '<span class="history-deleted">' . $link . '</span>';
 755                 }
 756                 return $link;
 757         }
 758
 759         /**
 760          * Wrap and format the given file's comment block, if the current
 761          * user is allowed to view it.
 762          *
 763          * @param ArchivedFile $file
 764          * @return string HTML
 765          */
 766         private function fileComment( $file ) {
 767                 if( $file->userCan( File::DELETED_COMMENT ) ) {
 768                         $block = $this->skin->commentBlock( $file->description );
 769                 } else {
 770                         $block = ' ' . wfMsgHtml( 'rev-deleted-comment' );
 771                 }
 772                 if( $file->isDeleted( File::DELETED_COMMENT ) ) {
 773                         return "<span class=\"history-deleted\">$block</span>";
 774                 }
 775                 return $block;
 776         }
 777
 778         /**
 779          * @param WebRequest $request
 780          */
 781         private function submit( $request ) {
 782                 global $wgUser, $wgOut;
 783                 # Check edit token on submission
 784                 if( $this->wasPosted && !$wgUser->matchEditToken( $request->getVal('wpEditToken') ) ) {
 785                         $wgOut->addWikiMsg( 'sessionfailure' );
 786                         return false;
 787                 }
 788                 $bitfield = $this->extractBitfield( $request );
 789                 $comment = $request->getText( 'wpReason' );
 790                 # Can the user set this field?
 791                 if( $bitfield & Revision::DELETED_RESTRICTED && !$wgUser->isAllowed('suppressrevision') ) {
 792                         $wgOut->permissionRequired( 'suppressrevision' );
 793                         return false;
 794                 }
 795                 # If the save went through, go to success message. Otherwise
 796                 # bounce back to form...
 797                 if( $this->save( $bitfield, $comment, $this->page ) ) {
 798                         $this->success();
 799                 } else if( $request->getCheck( 'oldid' ) || $request->getCheck( 'artimestamp' ) ) {
 800                         return $this->showRevs();
 801                 } else if( $request->getCheck( 'logid' ) ) {
 802                         return $this->showLogs();
 803                 } else if( $request->getCheck( 'oldimage' ) || $request->getCheck( 'fileid' ) ) {
 804                         return $this->showImages();
 805                 }
 806         }
 807
 808         private function success() {
 809                 global $wgOut;
 810
 811                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 812
 813                 $wrap = '<span class="success">$1</span>';
 814
 815                 if( $this->deleteKey=='logid' ) {
 816                         $wgOut->wrapWikiMsg( $wrap, 'logdelete-success' );
 817                         $this->showLogItems();
 818                 } else if( $this->deleteKey=='oldid' || $this->deleteKey=='artimestamp' ) {
 819                                 $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 820                         $this->showRevs();
 821                 } else if( $this->deleteKey=='fileid' ) {
 822                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 823                         $this->showImages();
 824                 } else if( $this->deleteKey=='oldimage' ) {
 825                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 826                         $this->showImages();
 827                 }
 828         }
 829
 830         /**
 831          * Put together a rev_deleted bitfield from the submitted checkboxes
 832          * @param WebRequest $request
 833          * @return int
 834          */
 835         private function extractBitfield( $request ) {
 836                 $bitfield = 0;
 837                 foreach( $this->checks as $item ) {
 838                         list( /* message */ , $name, $field ) = $item;
 839                         if( $request->getCheck( $name ) ) {
 840                                 $bitfield |= $field;
 841                         }
 842                 }
 843                 return $bitfield;
 844         }
 845
 846         private function save( $bitfield, $reason, $title ) {
 847                 $dbw = wfGetDB( DB_MASTER );
 848                 // Don't allow simply locking the interface for no reason
 849                 if( $bitfield == Revision::DELETED_RESTRICTED ) {
 850                         $bitfield = 0;
 851                 }
 852                 $deleter = new RevisionDeleter( $dbw );
 853                 // By this point, only one of the below should be set
 854                 if( isset($this->revisions) ) {
 855                         return $deleter->setRevVisibility( $title, $this->revisions, $bitfield, $reason );
 856                 } else if( isset($this->archrevs) ) {
 857                         return $deleter->setArchiveVisibility( $title, $this->archrevs, $bitfield, $reason );
 858                 } else if( isset($this->ofiles) ) {
 859                         return $deleter->setOldImgVisibility( $title, $this->ofiles, $bitfield, $reason );
 860                 } else if( isset($this->afiles) ) {
 861                         return $deleter->setArchFileVisibility( $title, $this->afiles, $bitfield, $reason );
 862                 } else if( isset($this->events) ) {
 863                         return $deleter->setEventVisibility( $title, $this->events, $bitfield, $reason );
 864                 }
 865         }
 866 }
 867
 868 /**
 869  * Implements the actions for Revision Deletion.
 870  * @ingroup SpecialPage
 871  */
 872 class RevisionDeleter {
 873         function __construct( $db ) {
 874                 $this->dbw = $db;
 875         }
 876
 877         /**
 878          * @param $title, the page these events apply to
 879          * @param array $items list of revision ID numbers
 880          * @param int $bitfield new rev_deleted value
 881          * @param string $comment Comment for log records
 882          */
 883         function setRevVisibility( $title, $items, $bitfield, $comment ) {
 884                 global $wgOut;
 885
 886                 $userAllowedAll = $success = true;
 887                 $revIDs = array();
 888                 $revCount = 0;
 889                 // Run through and pull all our data in one query
 890                 foreach( $items as $revid ) {
 891                         $where[] = intval($revid);
 892                 }
 893                 $result = $this->dbw->select( 'revision', '*',
 894                         array(
 895                                 'rev_page' => $title->getArticleID(),
 896                                 'rev_id' => $where ),
 897                         __METHOD__ );
 898                 while( $row = $this->dbw->fetchObject( $result ) ) {
 899                         $revObjs[$row->rev_id] = new Revision( $row );
 900                 }
 901                 // To work!
 902                 foreach( $items as $revid ) {
 903                         if( !isset($revObjs[$revid]) || $revObjs[$revid]->isCurrent() ) {
 904                                 $success = false;
 905                                 continue; // Must exist
 906                         } else if( !$revObjs[$revid]->userCan(Revision::DELETED_RESTRICTED) ) {
 907                         $userAllowedAll=false;
 908                                 continue;
 909                         }
 910                         // For logging, maintain a count of revisions
 911                         if( $revObjs[$revid]->mDeleted != $bitfield ) {
 912                                 $revCount++;
 913                                 $revIDs[]=$revid;
 914
 915                                 $this->updateRevision( $revObjs[$revid], $bitfield );
 916                                 $this->updateRecentChangesEdits( $revObjs[$revid], $bitfield, false );
 917                         }
 918                 }
 919                 // Clear caches...
 920                 // Don't log or touch if nothing changed
 921                 if( $revCount > 0 ) {
 922                         $this->updateLog( $title, $revCount, $bitfield, $revObjs[$revid]->mDeleted,
 923                                 $comment, $title, 'oldid', $revIDs );
 924                         $this->updatePage( $title );
 925                 }
 926                 // Where all revs allowed to be set?
 927                 if( !$userAllowedAll ) {
 928                         //FIXME: still might be confusing???
 929                         $wgOut->permissionRequired( 'suppressrevision' );
 930                         return false;
 931                 }
 932
 933                 return $success;
 934         }
 935
 936          /**
 937          * @param $title, the page these events apply to
 938          * @param array $items list of revision ID numbers
 939          * @param int $bitfield new rev_deleted value
 940          * @param string $comment Comment for log records
 941          */
 942         function setArchiveVisibility( $title, $items, $bitfield, $comment ) {
 943                 global $wgOut;
 944
 945                 $userAllowedAll = $success = true;
 946                 $count = 0;
 947                 $Id_set = array();
 948                 // Run through and pull all our data in one query
 949                 foreach( $items as $timestamp ) {
 950                         $where[] = $this->dbw->timestamp( $timestamp );
 951                 }
 952                 $result = $this->dbw->select( 'archive', '*',
 953                         array(
 954                                 'ar_namespace' => $title->getNamespace(),
 955                                 'ar_title' => $title->getDBKey(),
 956                                 'ar_timestamp' => $where ),
 957                         __METHOD__ );
 958                 while( $row = $this->dbw->fetchObject( $result ) ) {
 959                         $timestamp = wfTimestamp( TS_MW, $row->ar_timestamp );
 960                         $revObjs[$timestamp] = new Revision( array(
 961                                 'page'       => $title->getArticleId(),
 962                                 'id'         => $row->ar_rev_id,
 963                                 'text'       => $row->ar_text_id,
 964                                 'comment'    => $row->ar_comment,
 965                                 'user'       => $row->ar_user,
 966                                 'user_text'  => $row->ar_user_text,
 967                                 'timestamp'  => $timestamp,
 968                                 'minor_edit' => $row->ar_minor_edit,
 969                                 'text_id'    => $row->ar_text_id,
 970                                 'deleted'    => $row->ar_deleted,
 971                                 'len'        => $row->ar_len) );
 972                 }
 973                 // To work!
 974                 foreach( $items as $timestamp ) {
 975                         // This will only select the first revision with this timestamp.
 976                         // Since they are all selected/deleted at once, we can just check the
 977                         // permissions of one. UPDATE is done via timestamp, so all revs are set.
 978                         if( !is_object($revObjs[$timestamp]) ) {
 979                                 $success = false;
 980                                 continue; // Must exist
 981                         } else if( !$revObjs[$timestamp]->userCan(Revision::DELETED_RESTRICTED) ) {
 982                         $userAllowedAll=false;
 983                                 continue;
 984                         }
 985                         // Which revisions did we change anything about?
 986                         if( $revObjs[$timestamp]->mDeleted != $bitfield ) {
 987                            $Id_set[]=$timestamp;
 988                            $count++;
 989
 990                            $this->updateArchive( $revObjs[$timestamp], $title, $bitfield );
 991                         }
 992                 }
 993                 // For logging, maintain a count of revisions
 994                 if( $count > 0 ) {
 995                         $this->updateLog( $title, $count, $bitfield, $revObjs[$timestamp]->mDeleted,
 996                                 $comment, $title, 'artimestamp', $Id_set );
 997                 }
 998                 // Where all revs allowed to be set?
 999                 if( !$userAllowedAll ) {
1000                         $wgOut->permissionRequired( 'suppressrevision' );
1001                         return false;
1002                 }
1003
1004                 return $success;
1005         }
1006
1007          /**
1008          * @param $title, the page these events apply to
1009          * @param array $items list of revision ID numbers
1010          * @param int $bitfield new rev_deleted value
1011          * @param string $comment Comment for log records
1012          */
1013         function setOldImgVisibility( $title, $items, $bitfield, $comment ) {
1014                 global $wgOut;
1015
1016                 $userAllowedAll = $success = true;
1017                 $count = 0;
1018                 $set = array();
1019                 // Run through and pull all our data in one query
1020                 foreach( $items as $timestamp ) {
1021                         $where[] = $timestamp.'!'.$title->getDBKey();
1022                 }
1023                 $result = $this->dbw->select( 'oldimage', '*',
1024                         array(
1025                                 'oi_name' => $title->getDBKey(),
1026                                 'oi_archive_name' => $where ),
1027                         __METHOD__ );
1028                 while( $row = $this->dbw->fetchObject( $result ) ) {
1029                         $filesObjs[$row->oi_archive_name] = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
1030                         $filesObjs[$row->oi_archive_name]->user = $row->oi_user;
1031                         $filesObjs[$row->oi_archive_name]->user_text = $row->oi_user_text;
1032                 }
1033                 // To work!
1034                 foreach( $items as $timestamp ) {
1035                         $archivename = $timestamp.'!'.$title->getDBKey();
1036                         if( !isset($filesObjs[$archivename]) ) {
1037                                 $success = false;
1038                                 continue; // Must exist
1039                         } else if( !$filesObjs[$archivename]->userCan(File::DELETED_RESTRICTED) ) {
1040                         $userAllowedAll=false;
1041                                 continue;
1042                         }
1043
1044                         $transaction = true;
1045                         // Which revisions did we change anything about?
1046                         if( $filesObjs[$archivename]->deleted != $bitfield ) {
1047                                 $count++;
1048
1049                                 $this->dbw->begin();
1050                                 $this->updateOldFiles( $filesObjs[$archivename], $bitfield );
1051                                 // If this image is currently hidden...
1052                                 if( $filesObjs[$archivename]->deleted & File::DELETED_FILE ) {
1053                                         if( $bitfield & File::DELETED_FILE ) {
1054                                                 # Leave it alone if we are not changing this...
1055                                                 $set[]=$timestamp;
1056                                                 $transaction = true;
1057                                         } else {
1058                                                 # We are moving this out
1059                                                 $transaction = $this->makeOldImagePublic( $filesObjs[$archivename] );
1060                                                 $set[]=$transaction;
1061                                         }
1062                                 // Is it just now becoming hidden?
1063                                 } else if( $bitfield & File::DELETED_FILE ) {
1064                                         $transaction = $this->makeOldImagePrivate( $filesObjs[$archivename] );
1065                                         $set[]=$transaction;
1066                                 } else {
1067                                         $set[]=$timestamp;
1068                                 }
1069                                 // If our file operations fail, then revert back the db
1070                                 if( $transaction==false ) {
1071                                         $this->dbw->rollback();
1072                                         return false;
1073                                 }
1074                                 $this->dbw->commit();
1075                         }
1076                 }
1077
1078                 // Log if something was changed
1079                 if( $count > 0 ) {
1080                         $this->updateLog( $title, $count, $bitfield, $filesObjs[$archivename]->deleted,
1081                                 $comment, $title, 'oldimage', $set );
1082                         # Purge page/history
1083                         $file = wfLocalFile( $title );
1084                         $file->purgeCache();
1085                         $file->purgeHistory();
1086                         # Invalidate cache for all pages using this file
1087                         $update = new HTMLCacheUpdate( $title, 'imagelinks' );
1088                         $update->doUpdate();
1089                 }
1090                 // Where all revs allowed to be set?
1091                 if( !$userAllowedAll ) {
1092                         $wgOut->permissionRequired( 'suppressrevision' );
1093                         return false;
1094                 }
1095
1096                 return $success;
1097         }
1098
1099          /**
1100          * @param $title, the page these events apply to
1101          * @param array $items list of revision ID numbers
1102          * @param int $bitfield new rev_deleted value
1103          * @param string $comment Comment for log records
1104          */
1105         function setArchFileVisibility( $title, $items, $bitfield, $comment ) {
1106                 global $wgOut;
1107
1108                 $userAllowedAll = $success = true;
1109                 $count = 0;
1110                 $Id_set = array();
1111
1112                 // Run through and pull all our data in one query
1113                 foreach( $items as $id ) {
1114                         $where[] = intval($id);
1115                 }
1116                 $result = $this->dbw->select( 'filearchive', '*',
1117                         array( 'fa_name' => $title->getDBKey(),
1118                                 'fa_id' => $where ),
1119                         __METHOD__ );
1120                 while( $row = $this->dbw->fetchObject( $result ) ) {
1121                         $filesObjs[$row->fa_id] = ArchivedFile::newFromRow( $row );
1122                 }
1123                 // To work!
1124                 foreach( $items as $fileid ) {
1125                         if( !isset($filesObjs[$fileid]) ) {
1126                                 $success = false;
1127                                 continue; // Must exist
1128                         } else if( !$filesObjs[$fileid]->userCan(File::DELETED_RESTRICTED) ) {
1129                         $userAllowedAll=false;
1130                                 continue;
1131                         }
1132                         // Which revisions did we change anything about?
1133                         if( $filesObjs[$fileid]->deleted != $bitfield ) {
1134                            $Id_set[]=$fileid;
1135                            $count++;
1136
1137                            $this->updateArchFiles( $filesObjs[$fileid], $bitfield );
1138                         }
1139                 }
1140                 // Log if something was changed
1141                 if( $count > 0 ) {
1142                         $this->updateLog( $title, $count, $bitfield, $comment,
1143                                 $filesObjs[$fileid]->deleted, $title, 'fileid', $Id_set );
1144                 }
1145                 // Where all revs allowed to be set?
1146                 if( !$userAllowedAll ) {
1147                         $wgOut->permissionRequired( 'suppressrevision' );
1148                         return false;
1149                 }
1150
1151                 return $success;
1152         }
1153
1154         /**
1155          * @param $title, the log page these events apply to
1156          * @param array $items list of log ID numbers
1157          * @param int $bitfield new log_deleted value
1158          * @param string $comment Comment for log records
1159          */
1160         function setEventVisibility( $title, $items, $bitfield, $comment ) {
1161                 global $wgOut;
1162
1163                 $userAllowedAll = $success = true;
1164                 $count = 0;
1165                 $log_Ids = array();
1166
1167                 // Run through and pull all our data in one query
1168                 foreach( $items as $logid ) {
1169                         $where[] = intval($logid);
1170                 }
1171                 list($log,$logtype) = explode( '/',$title->getDBKey(), 2 );
1172                 $result = $this->dbw->select( 'logging', '*',
1173                         array(
1174                                 'log_type' => $logtype,
1175                                 'log_id' => $where ),
1176                         __METHOD__ );
1177                 while( $row = $this->dbw->fetchObject( $result ) ) {
1178                         $logRows[$row->log_id] = $row;
1179                 }
1180                 // To work!
1181                 foreach( $items as $logid ) {
1182                         if( !isset($logRows[$logid]) ) {
1183                                 $success = false;
1184                                 continue; // Must exist
1185                         } else if( !LogEventsList::userCan($logRows[$logid], LogPage::DELETED_RESTRICTED)
1186                                  || $logRows[$logid]->log_type == 'suppress' ) {
1187                         // Don't hide from oversight log!!!
1188                         $userAllowedAll=false;
1189                         continue;
1190                         }
1191                         // Which logs did we change anything about?
1192                         if( $logRows[$logid]->log_deleted != $bitfield ) {
1193                                 $log_Ids[]=$logid;
1194                                 $count++;
1195
1196                                 $this->updateLogs( $logRows[$logid], $bitfield );
1197                                 $this->updateRecentChangesLog( $logRows[$logid], $bitfield, true );
1198                         }
1199                 }
1200                 // Don't log or touch if nothing changed
1201                 if( $count > 0 ) {
1202                         $this->updateLog( $title, $count, $bitfield, $logRows[$logid]->log_deleted,
1203                                 $comment, $title, 'logid', $log_Ids );
1204                 }
1205                 // Were all revs allowed to be set?
1206                 if( !$userAllowedAll ) {
1207                         $wgOut->permissionRequired( 'suppressrevision' );
1208                         return false;
1209                 }
1210
1211                 return $success;
1212         }
1213
1214         /**
1215          * Moves an image to a safe private location
1216          * Caller is responsible for clearing caches
1217          * @param File $oimage
1218          * @returns mixed, timestamp string on success, false on failure
1219          */
1220         function makeOldImagePrivate( $oimage ) {
1221                 $transaction = new FSTransaction();
1222                 if( !FileStore::lock() ) {
1223                         wfDebug( __METHOD__.": failed to acquire file store lock, aborting\n" );
1224                         return false;
1225                 }
1226                 $oldpath = $oimage->getArchivePath() . DIRECTORY_SEPARATOR . $oimage->archive_name;
1227                 // Dupe the file into the file store
1228                 if( file_exists( $oldpath ) ) {
1229                         // Is our directory configured?
1230                         if( $store = FileStore::get( 'deleted' ) ) {
1231                                 if( !$oimage->sha1 ) {
1232                                         $oimage->upgradeRow(); // sha1 may be missing
1233                                 }
1234                                 $key = $oimage->sha1 . '.' . $oimage->getExtension();
1235                                 $transaction->add( $store->insert( $key, $oldpath, FileStore::DELETE_ORIGINAL ) );
1236                         } else {
1237                                 $group = null;
1238                                 $key = null;
1239                                 $transaction = false; // Return an error and do nothing
1240                         }
1241                 } else {
1242                         wfDebug( __METHOD__." deleting already-missing '$oldpath'; moving on to database\n" );
1243                         $group = null;
1244                         $key = '';
1245                         $transaction = new FSTransaction(); // empty
1246                 }
1247
1248                 if( $transaction === false ) {
1249                         // Fail to restore?
1250                         wfDebug( __METHOD__.": import to file store failed, aborting\n" );
1251                         throw new MWException( "Could not archive and delete file $oldpath" );
1252                         return false;
1253                 }
1254
1255                 wfDebug( __METHOD__.": set db items, applying file transactions\n" );
1256                 $transaction->commit();
1257                 FileStore::unlock();
1258
1259                 $m = explode('!',$oimage->archive_name,2);
1260                 $timestamp = $m[0];
1261
1262                 return $timestamp;
1263         }
1264
1265         /**
1266          * Moves an image from a safe private location
1267          * Caller is responsible for clearing caches
1268          * @param File $oimage
1269          * @returns mixed, string timestamp on success, false on failure
1270          */
1271         function makeOldImagePublic( $oimage ) {
1272                 $transaction = new FSTransaction();
1273                 if( !FileStore::lock() ) {
1274                         wfDebug( __METHOD__." could not acquire filestore lock\n" );
1275                         return false;
1276                 }
1277
1278                 $store = FileStore::get( 'deleted' );
1279                 if( !$store ) {
1280                         wfDebug( __METHOD__.": skipping row with no file.\n" );
1281                         return false;
1282                 }
1283
1284                 $key = $oimage->sha1.'.'.$oimage->getExtension();
1285                 $destDir = $oimage->getArchivePath();
1286                 if( !is_dir( $destDir ) ) {
1287                         wfMkdirParents( $destDir );
1288                 }
1289                 $destPath = $destDir . DIRECTORY_SEPARATOR . $oimage->archive_name;
1290                 // Check if any other stored revisions use this file;
1291                 // if so, we shouldn't remove the file from the hidden
1292                 // archives so they will still work. Check hidden files first.
1293                 $useCount = $this->dbw->selectField( 'oldimage', '1',
1294                         array( 'oi_sha1' => $oimage->sha1,
1295                                 'oi_deleted & '.File::DELETED_FILE => File::DELETED_FILE ),
1296                         __METHOD__, array( 'FOR UPDATE' ) );
1297                 // Check the rest of the deleted archives too.
1298                 // (these are the ones that don't show in the image history)
1299                 if( !$useCount ) {
1300                         $useCount = $this->dbw->selectField( 'filearchive', '1',
1301                                 array( 'fa_storage_group' => 'deleted', 'fa_storage_key' => $key ),
1302                                 __METHOD__, array( 'FOR UPDATE' ) );
1303                 }
1304
1305                 if( $useCount == 0 ) {
1306                         wfDebug( __METHOD__.": nothing else using {$oimage->sha1}, will deleting after\n" );
1307                         $flags = FileStore::DELETE_ORIGINAL;
1308                 } else {
1309                         $flags = 0;
1310                 }
1311                 $transaction->add( $store->export( $key, $destPath, $flags ) );
1312
1313                 wfDebug( __METHOD__.": set db items, applying file transactions\n" );
1314                 $transaction->commit();
1315                 FileStore::unlock();
1316
1317                 $m = explode('!',$oimage->archive_name,2);
1318                 $timestamp = $m[0];
1319
1320                 return $timestamp;
1321         }
1322
1323         /**
1324          * Update the revision's rev_deleted field
1325          * @param Revision $rev
1326          * @param int $bitfield new rev_deleted bitfield value
1327          */
1328         function updateRevision( $rev, $bitfield ) {
1329                 $this->dbw->update( 'revision',
1330                         array( 'rev_deleted' => $bitfield ),
1331                         array( 'rev_id' => $rev->getId(),
1332                                 'rev_page' => $rev->getPage() ),
1333                         __METHOD__ );
1334         }
1335
1336         /**
1337          * Update the revision's rev_deleted field
1338          * @param Revision $rev
1339          * @param Title $title
1340          * @param int $bitfield new rev_deleted bitfield value
1341          */
1342         function updateArchive( $rev, $title, $bitfield ) {
1343                 $this->dbw->update( 'archive',
1344                         array( 'ar_deleted' => $bitfield ),
1345                         array( 'ar_namespace' => $title->getNamespace(),
1346                                 'ar_title'     => $title->getDBKey(),
1347                                 'ar_timestamp' => $this->dbw->timestamp( $rev->getTimestamp() ),
1348                                 'ar_rev_id' => $rev->getId() ),
1349                         __METHOD__ );
1350         }
1351
1352         /**
1353          * Update the images's oi_deleted field
1354          * @param File $file
1355          * @param int $bitfield new rev_deleted bitfield value
1356          */
1357         function updateOldFiles( $file, $bitfield ) {
1358                 $this->dbw->update( 'oldimage',
1359                         array( 'oi_deleted' => $bitfield ),
1360                         array( 'oi_name' => $file->getName(),
1361                                 'oi_timestamp' => $this->dbw->timestamp( $file->getTimestamp() ) ),
1362                         __METHOD__ );
1363         }
1364
1365         /**
1366          * Update the images's fa_deleted field
1367          * @param ArchivedFile $file
1368          * @param int $bitfield new rev_deleted bitfield value
1369          */
1370         function updateArchFiles( $file, $bitfield ) {
1371                 $this->dbw->update( 'filearchive',
1372                         array( 'fa_deleted' => $bitfield ),
1373                         array( 'fa_id' => $file->getId() ),
1374                         __METHOD__ );
1375         }
1376
1377         /**
1378          * Update the logging log_deleted field
1379          * @param Row $row
1380          * @param int $bitfield new rev_deleted bitfield value
1381          */
1382         function updateLogs( $row, $bitfield ) {
1383                 $this->dbw->update( 'logging',
1384                         array( 'log_deleted' => $bitfield ),
1385                         array( 'log_id' => $row->log_id ),
1386                         __METHOD__ );
1387         }
1388
1389         /**
1390          * Update the revision's recentchanges record if fields have been hidden
1391          * @param Revision $rev
1392          * @param int $bitfield new rev_deleted bitfield value
1393          */
1394         function updateRecentChangesEdits( $rev, $bitfield ) {
1395                 $this->dbw->update( 'recentchanges',
1396                         array( 'rc_deleted' => $bitfield,
1397                                    'rc_patrolled' => 1 ),
1398                         array( 'rc_this_oldid' => $rev->getId(),
1399                                 'rc_timestamp' => $this->dbw->timestamp( $rev->getTimestamp() ) ),
1400                         __METHOD__ );
1401         }
1402
1403         /**
1404          * Update the revision's recentchanges record if fields have been hidden
1405          * @param Row $row
1406          * @param int $bitfield new rev_deleted bitfield value
1407          */
1408         function updateRecentChangesLog( $row, $bitfield ) {
1409                 $this->dbw->update( 'recentchanges',
1410                         array( 'rc_deleted' => $bitfield,
1411                                    'rc_patrolled' => 1 ),
1412                         array( 'rc_logid' => $row->log_id,
1413                                 'rc_timestamp' => $row->log_timestamp ),
1414                         __METHOD__ );
1415         }
1416
1417         /**
1418          * Touch the page's cache invalidation timestamp; this forces cached
1419          * history views to refresh, so any newly hidden or shown fields will
1420          * update properly.
1421          * @param Title $title
1422          */
1423         function updatePage( $title ) {
1424                 $title->invalidateCache();
1425                 $title->purgeSquid();
1426                 $title->touchLinks();
1427                 // Extensions that require referencing previous revisions may need this
1428                 wfRunHooks( 'ArticleRevisionVisiblitySet', array( &$title ) );
1429         }
1430
1431         /**
1432          * Checks for a change in the bitfield for a certain option and updates the
1433          * provided array accordingly.
1434          *
1435          * @param String $desc Description to add to the array if the option was
1436          * enabled / disabled.
1437          * @param int $field The bitmask describing the single option.
1438          * @param int $diff The xor of the old and new bitfields.
1439          * @param array $arr The array to update.
1440          */
1441         function checkItem ( $desc, $field, $diff, $new, &$arr ) {
1442                 if ( $diff & $field ) {
1443                         $arr [ ( $new & $field ) ? 0 : 1 ][] = $desc;
1444                 }
1445         }
1446
1447         /**
1448          * Gets an array describing the changes made to the visibilit of the revision.
1449          * If the resulting array is $arr, then $arr[0] will contain an array of strings
1450          * describing the items that were hidden, $arr[2] will contain an array of strings
1451          * describing the items that were unhidden, and $arr[3] will contain an array with
1452          * a single string, which can be one of "applied restrictions to sysops",
1453          * "removed restrictions from sysops", or null.
1454          *
1455          * @param int $n The new bitfield.
1456          * @param int $o The old bitfield.
1457          * @return An array as described above.
1458          */
1459         function getChanges ( $n, $o ) {
1460                 $diff = $n ^ $o;
1461                 $ret = array ( 0 => array(), 1 => array(), 2 => array() );
1462
1463                 $this->checkItem ( wfMsgForContent ( 'revdelete-content' ),
1464                                 Revision::DELETED_TEXT, $diff, $n, $ret );
1465                 $this->checkItem ( wfMsgForContent ( 'revdelete-summary' ),
1466                                 Revision::DELETED_COMMENT, $diff, $n, $ret );
1467                 $this->checkItem ( wfMsgForContent ( 'revdelete-uname' ),
1468                                 Revision::DELETED_USER, $diff, $n, $ret );
1469
1470                 // Restriction application to sysops
1471                 if ( $diff & Revision::DELETED_RESTRICTED ) {
1472                         if ( $n & Revision::DELETED_RESTRICTED )
1473                                 $ret[2][] = wfMsgForContent ( 'revdelete-restricted' );
1474                         else
1475                                 $ret[2][] = wfMsgForContent ( 'revdelete-unrestricted' );
1476                 }
1477
1478                 return $ret;
1479         }
1480
1481         /**
1482          * Gets a log message to describe the given revision visibility change. This
1483          * message will be of the form "[hid {content, edit summary, username}];
1484          * [unhid {...}][applied restrictions to sysops] for $count revisions: $comment".
1485          *
1486          * @param int $count The number of effected revisions.
1487          * @param int $nbitfield The new bitfield for the revision.
1488          * @param int $obitfield The old bitfield for the revision.
1489          * @param string $comment The comment associated with the change.
1490          * @param bool $isForLog
1491          */
1492         function getLogMessage ( $count, $nbitfield, $obitfield, $comment, $isForLog = false ) {
1493                 global $wgContLang;
1494
1495                 $s = '';
1496                 $changes = $this->getChanges( $nbitfield, $obitfield );
1497
1498                 if ( count ( $changes[0] ) ) {
1499                         $s .= wfMsgForContent ( 'revdelete-hid', implode ( ', ', $changes[0] ) );
1500                 }
1501
1502                 if ( count ( $changes[1] ) ) {
1503                         if ($s) $s .= '; ';
1504
1505                         $s .= wfMsgForContent ( 'revdelete-unhid', implode ( ', ', $changes[1] ) );
1506                 }
1507
1508                 if ( count ( $changes[2] )) {
1509                         if ($s)
1510                                 $s .= ' (' . $changes[2][0] . ')';
1511                         else
1512                                 $s = $changes[2][0];
1513                 }
1514
1515                 $msg = $isForLog ? 'logdelete-log-message' : 'revdelete-log-message';
1516                 $ret = wfMsgExt ( $msg, array( 'parsemag', 'content' ),
1517                         $s, $wgContLang->formatNum( $count ) );
1518
1519                 if ( $comment )
1520                         $ret .= ": $comment";
1521
1522                 return $ret;
1523
1524         }
1525
1526         /**
1527          * Record a log entry on the action
1528          * @param Title $title, page where item was removed from
1529          * @param int $count the number of revisions altered for this page
1530          * @param int $nbitfield the new _deleted value
1531          * @param int $obitfield the old _deleted value
1532          * @param string $comment
1533          * @param Title $target, the relevant page
1534          * @param string $param, URL param
1535          * @param Array $items
1536          */
1537         function updateLog( $title, $count, $nbitfield, $obitfield, $comment,
1538                 $target, $param, $items = array() )
1539         {
1540                 // Put things hidden from sysops in the oversight log
1541                 $logtype = ( ($nbitfield | $obitfield) & Revision::DELETED_RESTRICTED ) ? 'suppress' : 'delete';
1542                 $log = new LogPage( $logtype );
1543
1544                 $reason = $this->getLogMessage( $count, $nbitfield, $obitfield, $comment, $param == 'logid' );
1545
1546                 if( $param == 'logid' ) {
1547                         $params = array( implode( ',', $items) );
1548                         $log->addEntry( 'event', $title, $reason, $params );
1549                 } else {
1550                         // Add params for effected page and ids
1551                         $params = array( $param, implode( ',', $items) );
1552                         $log->addEntry( 'revision', $title, $reason, $params );
1553                 }
1554         }
1555 }