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