includes/specials/SpecialRevisiondelete.php

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