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         # 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->addWikiMsg( '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                 $wgOut->addWikiMsg( 'revdelete-text' );
 260
 261                 // Normal sysops can always see what they did, but can't always change it
 262                 if( !$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[] = Xml::hidden( 'oldid[]', $rev->getId() );
 276                 } else {
 277                         foreach( $revObjs as $rev )
 278                                 $hidden[] = Xml::hidden( '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                 // What is $action doing here???
 310                 global $wgOut, $wgUser, $action, $wgLang;
 311
 312                 $UserAllowed = true;
 313
 314                 $count = ($this->deleteKey=='oldimage') ? count($this->ofiles) : count($this->afiles);
 315                 $wgOut->addWikiMsg( 'revdelete-selected',
 316                         $this->page->getPrefixedText(),
 317                         $wgLang->formatNum($count) );
 318
 319                 $bitfields = 0;
 320                 $wgOut->addHTML( "<ul>" );
 321
 322                 $where = $filesObjs = array();
 323                 $dbr = wfGetDB( DB_SLAVE );
 324                 // Live old revisions...
 325                 $revisions = 0;
 326                 if( $this->deleteKey=='oldimage' ) {
 327                         // Run through and pull all our data in one query
 328                         foreach( $this->ofiles as $timestamp ) {
 329                                 $where[] = $dbr->addQuotes( $timestamp.'!'.$this->page->getDBKey() );
 330                         }
 331                         $whereClause = 'oi_archive_name IN(' . implode(',',$where) . ')';
 332                         $result = $dbr->select( 'oldimage', '*',
 333                                 array( 'oi_name' => $this->page->getDBKey(),
 334                                         $whereClause ),
 335                                 __METHOD__ );
 336                         while( $row = $dbr->fetchObject( $result ) ) {
 337                                 $filesObjs[$row->oi_archive_name] = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
 338                                 $filesObjs[$row->oi_archive_name]->user = $row->oi_user;
 339                                 $filesObjs[$row->oi_archive_name]->user_text = $row->oi_user_text;
 340                         }
 341                         // Check through our images
 342                         foreach( $this->ofiles as $timestamp ) {
 343                                 $archivename = $timestamp.'!'.$this->page->getDBKey();
 344                                 if( !isset($filesObjs[$archivename]) ) {
 345                                         continue;
 346                                 } else if( !$filesObjs[$archivename]->userCan(File::DELETED_RESTRICTED) ) {
 347                                         // If a rev is hidden from sysops
 348                                         if( $action != 'submit' ) {
 349                                                 $wgOut->permissionRequired( 'suppressrevision' );
 350                                                 return;
 351                                         }
 352                                         $UserAllowed = false;
 353                                 }
 354                                 $revisions++;
 355                                 // Inject history info
 356                                 $wgOut->addHTML( $this->fileLine( $filesObjs[$archivename] ) );
 357                                 $bitfields |= $filesObjs[$archivename]->deleted;
 358                         }
 359                 // Archived files...
 360                 } else {
 361                         // Run through and pull all our data in one query
 362                         foreach( $this->afiles as $id ) {
 363                                 $where[] = intval($id);
 364                         }
 365                         $whereClause = 'fa_id IN(' . implode(',',$where) . ')';
 366                         $result = $dbr->select( 'filearchive', '*',
 367                                 array( 'fa_name' => $this->page->getDBKey(),
 368                                         $whereClause ),
 369                                 __METHOD__ );
 370                         while( $row = $dbr->fetchObject( $result ) ) {
 371                                 $filesObjs[$row->fa_id] = ArchivedFile::newFromRow( $row );
 372                         }
 373
 374                         foreach( $this->afiles as $fileid ) {
 375                                 if( !isset($filesObjs[$fileid]) ) {
 376                                         continue;
 377                                 } else if( !$filesObjs[$fileid]->userCan(File::DELETED_RESTRICTED) ) {
 378                                         // If a rev is hidden from sysops
 379                                         if( $action != 'submit' ) {
 380                                                 $wgOut->permissionRequired( 'suppressrevision' );
 381                                                 return;
 382                                         }
 383                                         $UserAllowed = false;
 384                                 }
 385                                 $revisions++;
 386                                 // Inject history info
 387                                 $wgOut->addHTML( $this->archivedfileLine( $filesObjs[$fileid] ) );
 388                                 $bitfields |= $filesObjs[$fileid]->deleted;
 389                         }
 390                 }
 391                 if( !$revisions ) {
 392                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 393                         return;
 394                 }
 395
 396                 $wgOut->addHTML( "</ul>" );
 397
 398                 $wgOut->addWikiMsg('revdelete-text' );
 399                 //Normal sysops can always see what they did, but can't always change it
 400                 if( !$UserAllowed ) return;
 401
 402                 $items = array(
 403                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 404                         Xml::submitButton( wfMsg( 'revdelete-submit' ) )
 405                 );
 406                 $hidden = array(
 407                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 408                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 409                         Xml::hidden( 'type', $this->deleteKey )
 410                 );
 411                 if( $this->deleteKey=='oldimage' ) {
 412                         foreach( $this->ofiles as $filename )
 413                                 $hidden[] = Xml::hidden( 'oldimage[]', $filename );
 414                 } else {
 415                         foreach( $this->afiles as $fileid )
 416                                 $hidden[] = Xml::hidden( 'fileid[]', $fileid );
 417                 }
 418                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
 419                 $wgOut->addHTML(
 420                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $special->getLocalUrl( 'action=submit' ),
 421                                 'id' => 'mw-revdel-form-filerevisions' ) ) .
 422                         Xml::fieldset( wfMsg( 'revdelete-legend' ) )
 423                 );
 424                 // FIXME: all items checked for just one file are checked, even if not set for the others
 425                 foreach( $this->checks as $item ) {
 426                         list( $message, $name, $field ) = $item;
 427                         $wgOut->addHTML( Xml::tags( 'div', null, Xml::checkLabel( wfMsg( $message ), $name, $name, $bitfields & $field ) ) );
 428                 }
 429                 foreach( $items as $item ) {
 430                         $wgOut->addHTML( "<p>$item</p>" );
 431                 }
 432                 foreach( $hidden as $item ) {
 433                         $wgOut->addHTML( $item );
 434                 }
 435
 436                 $wgOut->addHTML(
 437                         Xml::closeElement( 'fieldset' ) .
 438                         Xml::closeElement( 'form' ) . "\n"
 439                 );
 440         }
 441
 442         /**
 443          * This lets a user set restrictions for log items
 444          */
 445         function showLogItems() {
 446                 global $wgOut, $wgUser, $action, $wgMessageCache, $wgLang;
 447
 448                 $UserAllowed = true;
 449                 $wgOut->addWikiMsg( 'logdelete-selected', $wgLang->formatNum( count($this->events) ) );
 450
 451                 $bitfields = 0;
 452                 $wgOut->addHTML( "<ul>" );
 453
 454                 $where = $logRows = array();
 455                 $dbr = wfGetDB( DB_SLAVE );
 456                 // Run through and pull all our data in one query
 457                 $logItems = 0;
 458                 foreach( $this->events as $logid ) {
 459                         $where[] = intval($logid);
 460                 }
 461                 list($log,$logtype) = explode( '/',$this->page->getDBKey(), 2 );
 462                 $whereClause = "log_type = '$logtype' AND log_id IN(" . implode(',',$where) . ")";
 463                 $result = $dbr->select( 'logging', '*',
 464                         array( $whereClause ),
 465                         __METHOD__ );
 466                 while( $row = $dbr->fetchObject( $result ) ) {
 467                         $logRows[$row->log_id] = $row;
 468                 }
 469                 $wgMessageCache->loadAllMessages();
 470                 foreach( $this->events as $logid ) {
 471                         // Don't hide from oversight log!!!
 472                         if( !isset( $logRows[$logid] ) || $logRows[$logid]->log_type=='suppress' ) {
 473                                 continue;
 474                         } else if( !LogEventsList::userCan( $logRows[$logid],Revision::DELETED_RESTRICTED) ) {
 475                         // If an event is hidden from sysops
 476                                 if( $action != 'submit') {
 477                                         $wgOut->permissionRequired( 'suppressrevision' );
 478                                         return;
 479                                 }
 480                                 $UserAllowed = false;
 481                         }
 482                         $logItems++;
 483                         $wgOut->addHTML( $this->logLine( $logRows[$logid] ) );
 484                         $bitfields |= $logRows[$logid]->log_deleted;
 485                 }
 486                 if( !$logItems ) {
 487                         $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 488                         return;
 489                 }
 490
 491                 $wgOut->addHTML( "</ul>" );
 492
 493                 $wgOut->addWikiMsg( 'revdelete-text' );
 494                 // Normal sysops can always see what they did, but can't always change it
 495                 if( !$UserAllowed ) return;
 496
 497                 $items = array(
 498                         Xml::inputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
 499                         Xml::submitButton( wfMsg( 'revdelete-submit' ) ) );
 500                 $hidden = array(
 501                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ),
 502                         Xml::hidden( 'target', $this->page->getPrefixedText() ),
 503                         Xml::hidden( 'type', $this->deleteKey ) );
 504                 foreach( $this->events as $logid ) {
 505                         $hidden[] = Xml::hidden( 'logid[]', $logid );
 506                 }
 507
 508                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
 509                 $wgOut->addHTML(
 510                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $special->getLocalUrl( 'action=submit' ),
 511                                 'id' => 'mw-revdel-form-logs' ) ) .
 512                         Xml::fieldset( 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                         $wgOut->addHTML( "<p>$item</p>" );
 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 $wgLang;
 538
 539                 $date = $wgLang->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 $wgLang, $wgTitle;
 574
 575                 $target = $this->page->getPrefixedText();
 576                 $date = $wgLang->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 = wfMsg( 'widthheight',
 596                                         $wgLang->formatNum( $file->getWidth() ),
 597                                         $wgLang->formatNum( $file->getHeight() ) ) .
 598                         ' (' . wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $file->getSize() ) ) . ')';
 599                 $data = htmlspecialchars( $data );
 600
 601                 return "<li>$pageLink ".$this->fileUserTools( $file )." $data ".$this->fileComment( $file )."$del</li>";
 602         }
 603
 604         /**
 605          * @param ArchivedFile $file
 606          * @returns string
 607          */
 608         private function archivedfileLine( $file ) {
 609                 global $wgLang;
 610
 611                 $target = $this->page->getPrefixedText();
 612                 $date = $wgLang->timeanddate( $file->getTimestamp(), true  );
 613
 614                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 615                 $pageLink = $this->skin->makeKnownLinkObj( $undelete, $date, "target=$target&file={$file->getKey()}" );
 616
 617                 $del = '';
 618                 if( $file->isDeleted(File::DELETED_FILE) ) {
 619                         $del = ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 620                 }
 621
 622                 $data = wfMsg( 'widthheight',
 623                                         $wgLang->formatNum( $file->getWidth() ),
 624                                         $wgLang->formatNum( $file->getHeight() ) ) .
 625                         ' (' . wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $file->getSize() ) ) . ')';
 626                 $data = htmlspecialchars( $data );
 627
 628                 return "<li> $pageLink ".$this->fileUserTools( $file )." $data ".$this->fileComment( $file )."$del</li>";
 629         }
 630
 631         /**
 632          * @param Array $row row
 633          * @returns string
 634          */
 635         private function logLine( $row ) {
 636                 global $wgLang;
 637
 638                 $date = $wgLang->timeanddate( $row->log_timestamp );
 639                 $paramArray = LogPage::extractParams( $row->log_params );
 640                 $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 641
 642                 $logtitle = SpecialPage::getTitleFor( 'Log' );
 643                 $loglink = $this->skin->makeKnownLinkObj( $logtitle, wfMsgHtml( 'log' ),
 644                         wfArrayToCGI( array( 'page' => $title->getPrefixedUrl() ) ) );
 645                 // Action text
 646                 if( !LogEventsList::userCan($row,LogPage::DELETED_ACTION) ) {
 647                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 648                 } else {
 649                         $action = LogPage::actionText( $row->log_type, $row->log_action, $title,
 650                                 $this->skin, $paramArray, true, true );
 651                         if( $row->log_deleted & LogPage::DELETED_ACTION )
 652                                 $action = '<span class="history-deleted">' . $action . '</span>';
 653                 }
 654                 // User links
 655                 $userLink = $this->skin->userLink( $row->log_user, User::WhoIs($row->log_user) );
 656                 if( LogEventsList::isDeleted($row,LogPage::DELETED_USER) ) {
 657                         $userLink = '<span class="history-deleted">' . $userLink . '</span>';
 658                 }
 659                 // Comment
 660                 $comment = $wgLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
 661                 if( LogEventsList::isDeleted($row,LogPage::DELETED_COMMENT) ) {
 662                         $comment = '<span class="history-deleted">' . $comment . '</span>';
 663                 }
 664                 return "<li>($loglink) $date $userLink $action $comment</li>";
 665         }
 666
 667         /**
 668          * Generate a user tool link cluster if the current user is allowed to view it
 669          * @param ArchivedFile $file
 670          * @return string HTML
 671          */
 672         private function fileUserTools( $file ) {
 673                 if( $file->userCan( Revision::DELETED_USER ) ) {
 674                         $link = $this->skin->userLink( $file->user, $file->user_text ) .
 675                                 $this->skin->userToolLinks( $file->user, $file->user_text );
 676                 } else {
 677                         $link = wfMsgHtml( 'rev-deleted-user' );
 678                 }
 679                 if( $file->isDeleted( Revision::DELETED_USER ) ) {
 680                         return '<span class="history-deleted">' . $link . '</span>';
 681                 }
 682                 return $link;
 683         }
 684
 685         /**
 686          * Wrap and format the given file's comment block, if the current
 687          * user is allowed to view it.
 688          *
 689          * @param ArchivedFile $file
 690          * @return string HTML
 691          */
 692         private function fileComment( $file ) {
 693                 if( $file->userCan( File::DELETED_COMMENT ) ) {
 694                         $block = $this->skin->commentBlock( $file->description );
 695                 } else {
 696                         $block = ' ' . wfMsgHtml( 'rev-deleted-comment' );
 697                 }
 698                 if( $file->isDeleted( File::DELETED_COMMENT ) ) {
 699                         return "<span class=\"history-deleted\">$block</span>";
 700                 }
 701                 return $block;
 702         }
 703
 704         /**
 705          * @param WebRequest $request
 706          */
 707         function submit( $request ) {
 708                 global $wgUser, $wgOut;
 709
 710                 $bitfield = $this->extractBitfield( $request );
 711                 $comment = $request->getText( 'wpReason' );
 712                 # Can the user set this field?
 713                 if( $bitfield & Revision::DELETED_RESTRICTED && !$wgUser->isAllowed('suppressrevision') ) {
 714                         $wgOut->permissionRequired( 'suppressrevision' );
 715                         return false;
 716                 }
 717                 # If the save went through, go to success message. Otherwise
 718                 # bounce back to form...
 719                 if( $this->save( $bitfield, $comment, $this->page ) ) {
 720                         $this->success();
 721                 } else if( $request->getCheck( 'oldid' ) || $request->getCheck( 'artimestamp' ) ) {
 722                         return $this->showRevs();
 723                 } else if( $request->getCheck( 'logid' ) ) {
 724                         return $this->showLogs();
 725                 } else if( $request->getCheck( 'oldimage' ) || $request->getCheck( 'fileid' ) ) {
 726                         return $this->showImages();
 727                 }
 728         }
 729
 730         private function success() {
 731                 global $wgOut;
 732
 733                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 734
 735                 $wrap = '<span class="success">$1</span>';
 736
 737                 if( $this->deleteKey=='logid' ) {
 738                         $wgOut->wrapWikiMsg( $wrap, 'logdelete-success' );
 739                         $this->showLogItems();
 740                 } else if( $this->deleteKey=='oldid' || $this->deleteKey=='artimestamp' ) {
 741                                 $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 742                         $this->showRevs();
 743                 } else if( $this->deleteKey=='fileid' ) {
 744                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 745                         $this->showImages();
 746                 } else if( $this->deleteKey=='oldimage' ) {
 747                         $wgOut->wrapWikiMsg( $wrap, 'revdelete-success' );
 748                         $this->showImages();
 749                 }
 750         }
 751
 752         /**
 753          * Put together a rev_deleted bitfield from the submitted checkboxes
 754          * @param WebRequest $request
 755          * @return int
 756          */
 757         private function extractBitfield( $request ) {
 758                 $bitfield = 0;
 759                 foreach( $this->checks as $item ) {
 760                         list( /* message */ , $name, $field ) = $item;
 761                         if( $request->getCheck( $name ) ) {
 762                                 $bitfield |= $field;
 763                         }
 764                 }
 765                 return $bitfield;
 766         }
 767
 768         private function save( $bitfield, $reason, $title ) {
 769                 $dbw = wfGetDB( DB_MASTER );
 770                 // Don't allow simply locking the interface for no reason
 771                 if( $bitfield == Revision::DELETED_RESTRICTED ) {
 772                         $bitfield = 0;
 773                 }
 774                 $deleter = new RevisionDeleter( $dbw );
 775                 // By this point, only one of the below should be set
 776                 if( isset($this->revisions) ) {
 777                         return $deleter->setRevVisibility( $title, $this->revisions, $bitfield, $reason );
 778                 } else if( isset($this->archrevs) ) {
 779                         return $deleter->setArchiveVisibility( $title, $this->archrevs, $bitfield, $reason );
 780                 } else if( isset($this->ofiles) ) {
 781                         return $deleter->setOldImgVisibility( $title, $this->ofiles, $bitfield, $reason );
 782                 } else if( isset($this->afiles) ) {
 783                         return $deleter->setArchFileVisibility( $title, $this->afiles, $bitfield, $reason );
 784                 } else if( isset($this->events) ) {
 785                         return $deleter->setEventVisibility( $title, $this->events, $bitfield, $reason );
 786                 }
 787         }
 788 }
 789
 790 /**
 791  * Implements the actions for Revision Deletion.
 792  * @ingroup SpecialPage
 793  */
 794 class RevisionDeleter {
 795         function __construct( $db ) {
 796                 $this->dbw = $db;
 797         }
 798
 799         /**
 800          * @param $title, the page these events apply to
 801          * @param array $items list of revision ID numbers
 802          * @param int $bitfield new rev_deleted value
 803          * @param string $comment Comment for log records
 804          */
 805         function setRevVisibility( $title, $items, $bitfield, $comment ) {
 806                 global $wgOut;
 807
 808                 $userAllowedAll = $success = true;
 809                 $revIDs = array();
 810                 $revCount = 0;
 811                 // Run through and pull all our data in one query
 812                 foreach( $items as $revid ) {
 813                         $where[] = intval($revid);
 814                 }
 815                 $whereClause = 'rev_id IN(' . implode(',',$where) . ')';
 816                 $result = $this->dbw->select( 'revision', '*',
 817                         array( 'rev_page' => $title->getArticleID(),
 818                                 $whereClause ),
 819                         __METHOD__ );
 820                 while( $row = $this->dbw->fetchObject( $result ) ) {
 821                         $revObjs[$row->rev_id] = new Revision( $row );
 822                 }
 823                 // To work!
 824                 foreach( $items as $revid ) {
 825                         if( !isset($revObjs[$revid]) || $revObjs[$revid]->isCurrent() ) {
 826                                 $success = false;
 827                                 continue; // Must exist
 828                         } else if( !$revObjs[$revid]->userCan(Revision::DELETED_RESTRICTED) ) {
 829                         $userAllowedAll=false;
 830                                 continue;
 831                         }
 832                         // For logging, maintain a count of revisions
 833                         if( $revObjs[$revid]->mDeleted != $bitfield ) {
 834                                 $revCount++;
 835                                 $revIDs[]=$revid;
 836
 837                                 $this->updateRevision( $revObjs[$revid], $bitfield );
 838                                 $this->updateRecentChangesEdits( $revObjs[$revid], $bitfield, false );
 839                         }
 840                 }
 841                 // Clear caches...
 842                 // Don't log or touch if nothing changed
 843                 if( $revCount > 0 ) {
 844                         $this->updateLog( $title, $revCount, $bitfield, $revObjs[$revid]->mDeleted,
 845                                 $comment, $title, 'oldid', $revIDs );
 846                         $this->updatePage( $title );
 847                 }
 848                 // Where all revs allowed to be set?
 849                 if( !$userAllowedAll ) {
 850                         //FIXME: still might be confusing???
 851                         $wgOut->permissionRequired( 'suppressrevision' );
 852                         return false;
 853                 }
 854
 855                 return $success;
 856         }
 857
 858          /**
 859          * @param $title, the page these events apply to
 860          * @param array $items list of revision ID numbers
 861          * @param int $bitfield new rev_deleted value
 862          * @param string $comment Comment for log records
 863          */
 864         function setArchiveVisibility( $title, $items, $bitfield, $comment ) {
 865                 global $wgOut;
 866
 867                 $userAllowedAll = $success = true;
 868                 $count = 0;
 869                 $Id_set = array();
 870                 // Run through and pull all our data in one query
 871                 foreach( $items as $timestamp ) {
 872                         $where[] = $this->dbw->addQuotes( $timestamp );
 873                 }
 874                 $whereClause = 'ar_timestamp IN(' . implode(',',$where) . ')';
 875                 $result = $this->dbw->select( 'archive', '*',
 876                         array( 'ar_namespace' => $title->getNamespace(),
 877                                 'ar_title' => $title->getDBKey(),
 878                                         $whereClause ),
 879                         __METHOD__ );
 880                 while( $row = $this->dbw->fetchObject( $result ) ) {
 881                         $revObjs[$row->ar_timestamp] = new Revision( array(
 882                         'page'       => $title->getArticleId(),
 883                         'id'         => $row->ar_rev_id,
 884                         'text'       => $row->ar_text_id,
 885                         'comment'    => $row->ar_comment,
 886                         'user'       => $row->ar_user,
 887                         'user_text'  => $row->ar_user_text,
 888                         'timestamp'  => $row->ar_timestamp,
 889                         'minor_edit' => $row->ar_minor_edit,
 890                         'text_id'    => $row->ar_text_id,
 891                         'deleted'    => $row->ar_deleted,
 892                         'len'        => $row->ar_len) );
 893                 }
 894                 // To work!
 895                 foreach( $items as $timestamp ) {
 896                         // This will only select the first revision with this timestamp.
 897                         // Since they are all selected/deleted at once, we can just check the
 898                         // permissions of one. UPDATE is done via timestamp, so all revs are set.
 899                         if( !is_object($revObjs[$timestamp]) ) {
 900                                 $success = false;
 901                                 continue; // Must exist
 902                         } else if( !$revObjs[$timestamp]->userCan(Revision::DELETED_RESTRICTED) ) {
 903                         $userAllowedAll=false;
 904                                 continue;
 905                         }
 906                         // Which revisions did we change anything about?
 907                         if( $revObjs[$timestamp]->mDeleted != $bitfield ) {
 908                            $Id_set[]=$timestamp;
 909                            $count++;
 910
 911                            $this->updateArchive( $revObjs[$timestamp], $title, $bitfield );
 912                         }
 913                 }
 914                 // For logging, maintain a count of revisions
 915                 if( $count > 0 ) {
 916                         $this->updateLog( $title, $count, $bitfield, $revObjs[$timestamp]->mDeleted,
 917                                 $comment, $title, 'artimestamp', $Id_set );
 918                 }
 919                 // Where all revs allowed to be set?
 920                 if( !$userAllowedAll ) {
 921                         $wgOut->permissionRequired( 'suppressrevision' );
 922                         return false;
 923                 }
 924
 925                 return $success;
 926         }
 927
 928          /**
 929          * @param $title, the page these events apply to
 930          * @param array $items list of revision ID numbers
 931          * @param int $bitfield new rev_deleted value
 932          * @param string $comment Comment for log records
 933          */
 934         function setOldImgVisibility( $title, $items, $bitfield, $comment ) {
 935                 global $wgOut;
 936
 937                 $userAllowedAll = $success = true;
 938                 $count = 0;
 939                 $set = array();
 940                 // Run through and pull all our data in one query
 941                 foreach( $items as $timestamp ) {
 942                         $where[] = $this->dbw->addQuotes( $timestamp.'!'.$title->getDBKey() );
 943                 }
 944                 $whereClause = 'oi_archive_name IN(' . implode(',',$where) . ')';
 945                 $result = $this->dbw->select( 'oldimage', '*',
 946                         array( 'oi_name' => $title->getDBKey(),
 947                                 $whereClause ),
 948                         __METHOD__ );
 949                 while( $row = $this->dbw->fetchObject( $result ) ) {
 950                         $filesObjs[$row->oi_archive_name] = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
 951                         $filesObjs[$row->oi_archive_name]->user = $row->oi_user;
 952                         $filesObjs[$row->oi_archive_name]->user_text = $row->oi_user_text;
 953                 }
 954                 // To work!
 955                 foreach( $items as $timestamp ) {
 956                         $archivename = $timestamp.'!'.$title->getDBKey();
 957                         if( !isset($filesObjs[$archivename]) ) {
 958                                 $success = false;
 959                                 continue; // Must exist
 960                         } else if( !$filesObjs[$archivename]->userCan(File::DELETED_RESTRICTED) ) {
 961                         $userAllowedAll=false;
 962                                 continue;
 963                         }
 964
 965                         $transaction = true;
 966                         // Which revisions did we change anything about?
 967                         if( $filesObjs[$archivename]->deleted != $bitfield ) {
 968                                 $count++;
 969
 970                                 $this->dbw->begin();
 971                                 $this->updateOldFiles( $filesObjs[$archivename], $bitfield );
 972                                 // If this image is currently hidden...
 973                                 if( $filesObjs[$archivename]->deleted & File::DELETED_FILE ) {
 974                                         if( $bitfield & File::DELETED_FILE ) {
 975                                                 # Leave it alone if we are not changing this...
 976                                                 $set[]=$archivename;
 977                                                 $transaction = true;
 978                                         } else {
 979                                                 # We are moving this out
 980                                                 $transaction = $this->makeOldImagePublic( $filesObjs[$archivename] );
 981                                                 $set[]=$transaction;
 982                                         }
 983                                 // Is it just now becoming hidden?
 984                                 } else if( $bitfield & File::DELETED_FILE ) {
 985                                         $transaction = $this->makeOldImagePrivate( $filesObjs[$archivename] );
 986                                         $set[]=$transaction;
 987                                 } else {
 988                                         $set[]=$timestamp;
 989                                 }
 990                                 // If our file operations fail, then revert back the db
 991                                 if( $transaction==false ) {
 992                                         $this->dbw->rollback();
 993                                         return false;
 994                                 }
 995                                 $this->dbw->commit();
 996                         }
 997                 }
 998
 999                 // Log if something was changed
1000                 if( $count > 0 ) {
1001                         $this->updateLog( $title, $count, $bitfield, $filesObjs[$archivename]->deleted,
1002                                 $comment, $title, 'oldimage', $set );
1003                         # Purge page/history
1004                         $file = wfLocalFile( $title );
1005                         $file->purgeCache();
1006                         $file->purgeHistory();
1007                         # Invalidate cache for all pages using this file
1008                         $update = new HTMLCacheUpdate( $title, 'imagelinks' );
1009                         $update->doUpdate();
1010                 }
1011                 // Where all revs allowed to be set?
1012                 if( !$userAllowedAll ) {
1013                         $wgOut->permissionRequired( 'suppressrevision' );
1014                         return false;
1015                 }
1016
1017                 return $success;
1018         }
1019
1020          /**
1021          * @param $title, the page these events apply to
1022          * @param array $items list of revision ID numbers
1023          * @param int $bitfield new rev_deleted value
1024          * @param string $comment Comment for log records
1025          */
1026         function setArchFileVisibility( $title, $items, $bitfield, $comment ) {
1027                 global $wgOut;
1028
1029                 $userAllowedAll = $success = true;
1030                 $count = 0;
1031                 $Id_set = array();
1032
1033                 // Run through and pull all our data in one query
1034                 foreach( $items as $id ) {
1035                         $where[] = intval($id);
1036                 }
1037                 $whereClause = 'fa_id IN(' . implode(',',$where) . ')';
1038                 $result = $this->dbw->select( 'filearchive', '*',
1039                         array( 'fa_name' => $title->getDBKey(),
1040                                 $whereClause ),
1041                         __METHOD__ );
1042                 while( $row = $this->dbw->fetchObject( $result ) ) {
1043                         $filesObjs[$row->fa_id] = ArchivedFile::newFromRow( $row );
1044                 }
1045                 // To work!
1046                 foreach( $items as $fileid ) {
1047                         if( !isset($filesObjs[$fileid]) ) {
1048                                 $success = false;
1049                                 continue; // Must exist
1050                         } else if( !$filesObjs[$fileid]->userCan(File::DELETED_RESTRICTED) ) {
1051                         $userAllowedAll=false;
1052                                 continue;
1053                         }
1054                         // Which revisions did we change anything about?
1055                         if( $filesObjs[$fileid]->deleted != $bitfield ) {
1056                            $Id_set[]=$fileid;
1057                            $count++;
1058
1059                            $this->updateArchFiles( $filesObjs[$fileid], $bitfield );
1060                         }
1061                 }
1062                 // Log if something was changed
1063                 if( $count > 0 ) {
1064                         $this->updateLog( $title, $count, $bitfield, $comment,
1065                                 $filesObjs[$fileid]->deleted, $title, 'fileid', $Id_set );
1066                 }
1067                 // Where all revs allowed to be set?
1068                 if( !$userAllowedAll ) {
1069                         $wgOut->permissionRequired( 'suppressrevision' );
1070                         return false;
1071                 }
1072
1073                 return $success;
1074         }
1075
1076         /**
1077          * @param $title, the log page these events apply to
1078          * @param array $items list of log ID numbers
1079          * @param int $bitfield new log_deleted value
1080          * @param string $comment Comment for log records
1081          */
1082         function setEventVisibility( $title, $items, $bitfield, $comment ) {
1083                 global $wgOut;
1084
1085                 $userAllowedAll = $success = true;
1086                 $count = 0;
1087                 $log_Ids = array();
1088
1089                 // Run through and pull all our data in one query
1090                 foreach( $items as $logid ) {
1091                         $where[] = intval($logid);
1092                 }
1093                 list($log,$logtype) = explode( '/',$title->getDBKey(), 2 );
1094                 $whereClause = "log_type ='$logtype' AND log_id IN(" . implode(',',$where) . ")";
1095                 $result = $this->dbw->select( 'logging', '*',
1096                         array( $whereClause ),
1097                         __METHOD__ );
1098                 while( $row = $this->dbw->fetchObject( $result ) ) {
1099                         $logRows[$row->log_id] = $row;
1100                 }
1101                 // To work!
1102                 foreach( $items as $logid ) {
1103                         if( !isset($logRows[$logid]) ) {
1104                                 $success = false;
1105                                 continue; // Must exist
1106                         } else if( !LogEventsList::userCan($logRows[$logid], LogPage::DELETED_RESTRICTED)
1107                                  || $logRows[$logid]->log_type == 'suppress' ) {
1108                         // Don't hide from oversight log!!!
1109                         $userAllowedAll=false;
1110                         continue;
1111                         }
1112                         // Which logs did we change anything about?
1113                         if( $logRows[$logid]->log_deleted != $bitfield ) {
1114                                 $log_Ids[]=$logid;
1115                                 $count++;
1116
1117                                 $this->updateLogs( $logRows[$logid], $bitfield );
1118                                 $this->updateRecentChangesLog( $logRows[$logid], $bitfield, true );
1119                         }
1120                 }
1121                 // Don't log or touch if nothing changed
1122                 if( $count > 0 ) {
1123                         $this->updateLog( $title, $count, $bitfield, $logRows[$logid]->log_deleted,
1124                                 $comment, $title, 'logid', $log_Ids );
1125                 }
1126                 // Were all revs allowed to be set?
1127                 if( !$userAllowedAll ) {
1128                         $wgOut->permissionRequired( 'suppressrevision' );
1129                         return false;
1130                 }
1131
1132                 return $success;
1133         }
1134
1135         /**
1136          * Moves an image to a safe private location
1137          * Caller is responsible for clearing caches
1138          * @param File $oimage
1139          * @returns mixed, timestamp string on success, false on failure
1140          */
1141         function makeOldImagePrivate( $oimage ) {
1142                 $transaction = new FSTransaction();
1143                 if( !FileStore::lock() ) {
1144                         wfDebug( __METHOD__.": failed to acquire file store lock, aborting\n" );
1145                         return false;
1146                 }
1147                 $oldpath = $oimage->getArchivePath() . DIRECTORY_SEPARATOR . $oimage->archive_name;
1148                 // Dupe the file into the file store
1149                 if( file_exists( $oldpath ) ) {
1150                         // Is our directory configured?
1151                         if( $store = FileStore::get( 'deleted' ) ) {
1152                                 if( !$oimage->sha1 ) {
1153                                         $oimage->upgradeRow(); // sha1 may be missing
1154                                 }
1155                                 $key = $oimage->sha1 . '.' . $oimage->getExtension();
1156                                 $transaction->add( $store->insert( $key, $oldpath, FileStore::DELETE_ORIGINAL ) );
1157                         } else {
1158                                 $group = null;
1159                                 $key = null;
1160                                 $transaction = false; // Return an error and do nothing
1161                         }
1162                 } else {
1163                         wfDebug( __METHOD__." deleting already-missing '$oldpath'; moving on to database\n" );
1164                         $group = null;
1165                         $key = '';
1166                         $transaction = new FSTransaction(); // empty
1167                 }
1168
1169                 if( $transaction === false ) {
1170                         // Fail to restore?
1171                         wfDebug( __METHOD__.": import to file store failed, aborting\n" );
1172                         throw new MWException( "Could not archive and delete file $oldpath" );
1173                         return false;
1174                 }
1175
1176                 wfDebug( __METHOD__.": set db items, applying file transactions\n" );
1177                 $transaction->commit();
1178                 FileStore::unlock();
1179
1180                 $m = explode('!',$oimage->archive_name,2);
1181                 $timestamp = $m[0];
1182
1183                 return $timestamp;
1184         }
1185
1186         /**
1187          * Moves an image from a safe private location
1188          * Caller is responsible for clearing caches
1189          * @param File $oimage
1190          * @returns mixed, string timestamp on success, false on failure
1191          */
1192         function makeOldImagePublic( $oimage ) {
1193                 $transaction = new FSTransaction();
1194                 if( !FileStore::lock() ) {
1195                         wfDebug( __METHOD__." could not acquire filestore lock\n" );
1196                         return false;
1197                 }
1198
1199                 $store = FileStore::get( 'deleted' );
1200                 if( !$store ) {
1201                         wfDebug( __METHOD__.": skipping row with no file.\n" );
1202                         return false;
1203                 }
1204
1205                 $key = $oimage->sha1.'.'.$oimage->getExtension();
1206                 $destDir = $oimage->getArchivePath();
1207                 if( !is_dir( $destDir ) ) {
1208                         wfMkdirParents( $destDir );
1209                 }
1210                 $destPath = $destDir . DIRECTORY_SEPARATOR . $oimage->archive_name;
1211                 // Check if any other stored revisions use this file;
1212                 // if so, we shouldn't remove the file from the hidden
1213                 // archives so they will still work. Check hidden files first.
1214                 $useCount = $this->dbw->selectField( 'oldimage', '1',
1215                         array( 'oi_sha1' => $oimage->sha1,
1216                                 'oi_deleted & '.File::DELETED_FILE => File::DELETED_FILE ),
1217                         __METHOD__, array( 'FOR UPDATE' ) );
1218                 // Check the rest of the deleted archives too.
1219                 // (these are the ones that don't show in the image history)
1220                 if( !$useCount ) {
1221                         $useCount = $this->dbw->selectField( 'filearchive', '1',
1222                                 array( 'fa_storage_group' => 'deleted', 'fa_storage_key' => $key ),
1223                                 __METHOD__, array( 'FOR UPDATE' ) );
1224                 }
1225
1226                 if( $useCount == 0 ) {
1227                         wfDebug( __METHOD__.": nothing else using {$oimage->sha1}, will deleting after\n" );
1228                         $flags = FileStore::DELETE_ORIGINAL;
1229                 } else {
1230                         $flags = 0;
1231                 }
1232                 $transaction->add( $store->export( $key, $destPath, $flags ) );
1233
1234                 wfDebug( __METHOD__.": set db items, applying file transactions\n" );
1235                 $transaction->commit();
1236                 FileStore::unlock();
1237
1238                 $m = explode('!',$oimage->archive_name,2);
1239                 $timestamp = $m[0];
1240
1241                 return $timestamp;
1242         }
1243
1244         /**
1245          * Update the revision's rev_deleted field
1246          * @param Revision $rev
1247          * @param int $bitfield new rev_deleted bitfield value
1248          */
1249         function updateRevision( $rev, $bitfield ) {
1250                 $this->dbw->update( 'revision',
1251                         array( 'rev_deleted' => $bitfield ),
1252                         array( 'rev_id' => $rev->getId(),
1253                                 'rev_page' => $rev->getPage() ),
1254                         __METHOD__ );
1255         }
1256
1257         /**
1258          * Update the revision's rev_deleted field
1259          * @param Revision $rev
1260          * @param Title $title
1261          * @param int $bitfield new rev_deleted bitfield value
1262          */
1263         function updateArchive( $rev, $title, $bitfield ) {
1264                 $this->dbw->update( 'archive',
1265                         array( 'ar_deleted' => $bitfield ),
1266                         array( 'ar_namespace' => $title->getNamespace(),
1267                                 'ar_title'     => $title->getDBKey(),
1268                                 'ar_timestamp' => $this->dbw->timestamp( $rev->getTimestamp() ),
1269                                 'ar_rev_id' => $rev->getId() ),
1270                         __METHOD__ );
1271         }
1272
1273         /**
1274          * Update the images's oi_deleted field
1275          * @param File $file
1276          * @param int $bitfield new rev_deleted bitfield value
1277          */
1278         function updateOldFiles( $file, $bitfield ) {
1279                 $this->dbw->update( 'oldimage',
1280                         array( 'oi_deleted' => $bitfield ),
1281                         array( 'oi_name' => $file->getName(),
1282                                 'oi_timestamp' => $this->dbw->timestamp( $file->getTimestamp() ) ),
1283                         __METHOD__ );
1284         }
1285
1286         /**
1287          * Update the images's fa_deleted field
1288          * @param ArchivedFile $file
1289          * @param int $bitfield new rev_deleted bitfield value
1290          */
1291         function updateArchFiles( $file, $bitfield ) {
1292                 $this->dbw->update( 'filearchive',
1293                         array( 'fa_deleted' => $bitfield ),
1294                         array( 'fa_id' => $file->getId() ),
1295                         __METHOD__ );
1296         }
1297
1298         /**
1299          * Update the logging log_deleted field
1300          * @param Row $row
1301          * @param int $bitfield new rev_deleted bitfield value
1302          */
1303         function updateLogs( $row, $bitfield ) {
1304                 $this->dbw->update( 'logging',
1305                         array( 'log_deleted' => $bitfield ),
1306                         array( 'log_id' => $row->log_id ),
1307                         __METHOD__ );
1308         }
1309
1310         /**
1311          * Update the revision's recentchanges record if fields have been hidden
1312          * @param Revision $rev
1313          * @param int $bitfield new rev_deleted bitfield value
1314          */
1315         function updateRecentChangesEdits( $rev, $bitfield ) {
1316                 $this->dbw->update( 'recentchanges',
1317                         array( 'rc_deleted' => $bitfield,
1318                                    'rc_patrolled' => 1 ),
1319                         array( 'rc_this_oldid' => $rev->getId(),
1320                                 'rc_timestamp' => $this->dbw->timestamp( $rev->getTimestamp() ) ),
1321                         __METHOD__ );
1322         }
1323
1324         /**
1325          * Update the revision's recentchanges record if fields have been hidden
1326          * @param Row $row
1327          * @param int $bitfield new rev_deleted bitfield value
1328          */
1329         function updateRecentChangesLog( $row, $bitfield ) {
1330                 $this->dbw->update( 'recentchanges',
1331                         array( 'rc_deleted' => $bitfield,
1332                                    'rc_patrolled' => 1 ),
1333                         array( 'rc_logid' => $row->log_id,
1334                                 'rc_timestamp' => $row->log_timestamp ),
1335                         __METHOD__ );
1336         }
1337
1338         /**
1339          * Touch the page's cache invalidation timestamp; this forces cached
1340          * history views to refresh, so any newly hidden or shown fields will
1341          * update properly.
1342          * @param Title $title
1343          */
1344         function updatePage( $title ) {
1345                 $title->invalidateCache();
1346                 $title->purgeSquid();
1347                 $title->touchLinks();
1348                 // Extensions that require referencing previous revisions may need this
1349                 wfRunHooks( 'ArticleRevisionVisiblitySet', array( &$title ) );
1350         }
1351
1352         /**
1353          * Checks for a change in the bitfield for a certain option and updates the
1354          * provided array accordingly.
1355          *
1356          * @param String $desc Description to add to the array if the option was
1357          * enabled / disabled.
1358          * @param int $field The bitmask describing the single option.
1359          * @param int $diff The xor of the old and new bitfields.
1360          * @param array $arr The array to update.
1361          */
1362         function checkItem ( $desc, $field, $diff, $new, &$arr ) {
1363                 if ( $diff & $field ) {
1364                         $arr [ ( $new & $field ) ? 0 : 1 ][] = $desc;
1365                 }
1366         }
1367
1368         /**
1369          * Gets an array describing the changes made to the visibilit of the revision.
1370          * If the resulting array is $arr, then $arr[0] will contain an array of strings
1371          * describing the items that were hidden, $arr[2] will contain an array of strings
1372          * describing the items that were unhidden, and $arr[3] will contain an array with
1373          * a single string, which can be one of "applied restrictions to sysops",
1374          * "removed restrictions from sysops", or null.
1375          *
1376          * @param int $n The new bitfield.
1377          * @param int $o The old bitfield.
1378          * @return An array as described above.
1379          */
1380         function getChanges ( $n, $o ) {
1381                 $diff = $n ^ $o;
1382                 $ret = array ( 0 => array(), 1 => array(), 2 => array() );
1383
1384                 $this->checkItem ( wfMsgForContent ( 'revdelete-content' ),
1385                                 Revision::DELETED_TEXT, $diff, $n, $ret );
1386                 $this->checkItem ( wfMsgForContent ( 'revdelete-summary' ),
1387                                 Revision::DELETED_COMMENT, $diff, $n, $ret );
1388                 $this->checkItem ( wfMsgForContent ( 'revdelete-uname' ),
1389                                 Revision::DELETED_USER, $diff, $n, $ret );
1390
1391                 // Restriction application to sysops
1392                 if ( $diff & Revision::DELETED_RESTRICTED ) {
1393                         if ( $n & Revision::DELETED_RESTRICTED )
1394                                 $ret[2][] = wfMsgForContent ( 'revdelete-restricted' );
1395                         else
1396                                 $ret[2][] = wfMsgForContent ( 'revdelete-unrestricted' );
1397                 }
1398
1399                 return $ret;
1400         }
1401
1402         /**
1403          * Gets a log message to describe the given revision visibility change. This
1404          * message will be of the form "[hid {content, edit summary, username}];
1405          * [unhid {...}][applied restrictions to sysops] for $count revisions: $comment".
1406          *
1407          * @param int $count The number of effected revisions.
1408          * @param int $nbitfield The new bitfield for the revision.
1409          * @param int $obitfield The old bitfield for the revision.
1410          * @param string $comment The comment associated with the change.
1411          * @param bool $isForLog
1412          */
1413         function getLogMessage ( $count, $nbitfield, $obitfield, $comment, $isForLog = false ) {
1414                 global $wgContLang;
1415
1416                 $s = '';
1417                 $changes = $this->getChanges( $nbitfield, $obitfield );
1418
1419                 if ( count ( $changes[0] ) ) {
1420                         $s .= wfMsgForContent ( 'revdelete-hid', implode ( ', ', $changes[0] ) );
1421                 }
1422
1423                 if ( count ( $changes[1] ) ) {
1424                         if ($s) $s .= '; ';
1425
1426                         $s .= wfMsgForContent ( 'revdelete-unhid', implode ( ', ', $changes[1] ) );
1427                 }
1428
1429                 if ( count ( $changes[2] )) {
1430                         if ($s)
1431                                 $s .= ' (' . $changes[2][0] . ')';
1432                         else
1433                                 $s = $changes[2][0];
1434                 }
1435
1436                 $msg = $isForLog ? 'logdelete-log-message' : 'revdelete-log-message';
1437                 $ret = wfMsgExt ( $msg, array( 'parsemag', 'content' ),
1438                         $s, $wgContLang->formatNum( $count ) );
1439
1440                 if ( $comment )
1441                         $ret .= ": $comment";
1442
1443                 return $ret;
1444
1445         }
1446
1447         /**
1448          * Record a log entry on the action
1449          * @param Title $title, page where item was removed from
1450          * @param int $count the number of revisions altered for this page
1451          * @param int $nbitfield the new _deleted value
1452          * @param int $obitfield the old _deleted value
1453          * @param string $comment
1454          * @param Title $target, the relevant page
1455          * @param string $param, URL param
1456          * @param Array $items
1457          */
1458         function updateLog( $title, $count, $nbitfield, $obitfield, $comment, $target, $param, $items = array() ) {
1459                 // Put things hidden from sysops in the oversight log
1460                 $logtype = ( ($nbitfield | $obitfield) & Revision::DELETED_RESTRICTED ) ? 'suppress' : 'delete';
1461                 $log = new LogPage( $logtype );
1462
1463                 $reason = $this->getLogMessage ( $count, $nbitfield, $obitfield, $comment, $param == 'logid' );
1464
1465                 if( $param == 'logid' ) {
1466                         $params = array( implode( ',', $items) );
1467                         $log->addEntry( 'event', $title, $reason, $params );
1468                 } else {
1469                         // Add params for effected page and ids
1470                         $params = array( $param, implode( ',', $items) );
1471                         $log->addEntry( 'revision', $title, $reason, $params );
1472                 }
1473         }
1474 }