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