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