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