includes/specials/SpecialRevisiondelete.php

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