includes/ImagePage.php

   1 <?php
   2 /**
   3  * @package MediaWiki
   4  */
   5
   6 /**
   7  *
   8  */
   9 if( !defined( 'MEDIAWIKI' ) )
  10         die( 1 );
  11
  12 require_once( 'Image.php' );
  13
  14 /**
  15  * Special handling for image description pages
  16  * @package MediaWiki
  17  */
  18 class ImagePage extends Article {
  19
  20         /* private */ var $img;  // Image object this page is shown for
  21         var $mExtraDescription = false;
  22
  23         /**
  24          * Handler for action=render
  25          * Include body text only; none of the image extras
  26          */
  27         function render() {
  28                 global $wgOut;
  29                 $wgOut->setArticleBodyOnly( true );
  30                 $wgOut->addSecondaryWikitext( $this->getContent() );
  31         }
  32
  33         function view() {
  34                 global $wgOut, $wgShowEXIF;
  35
  36                 $this->img = new Image( $this->mTitle );
  37
  38                 if( $this->mTitle->getNamespace() == NS_IMAGE  ) {
  39                         if ($wgShowEXIF && $this->img->exists()) {
  40                                 $exif = $this->img->getExifData();
  41                                 $showmeta = count($exif) ? true : false;
  42                         } else {
  43                                 $exif = false;
  44                                 $showmeta = false;
  45                         }
  46
  47                         if ($this->img->exists())
  48                                 $wgOut->addHTML($this->showTOC($showmeta));
  49
  50                         $this->openShowImage();
  51
  52                         # No need to display noarticletext, we use our own message, output in openShowImage()
  53                         if( $this->getID() ) {
  54                                 Article::view();
  55                         } else {
  56                                 # Just need to set the right headers
  57                                 $wgOut->setArticleFlag( true );
  58                                 $wgOut->setRobotpolicy( 'index,follow' );
  59                                 $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  60                                 $this->viewUpdates();
  61                         }
  62
  63                         # Show shared description, if needed
  64                         if( $this->mExtraDescription ) {
  65                                 $fol = wfMsg( 'shareddescriptionfollows' );
  66                                 if( $fol != '-' ) {
  67                                         $wgOut->addWikiText( $fol );
  68                                 }
  69                                 $wgOut->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . '</div>' );
  70                         }
  71
  72                         $this->closeShowImage();
  73                         $this->imageHistory();
  74                         $this->imageLinks();
  75                         if( $exif ) {
  76                                 global $wgStylePath;
  77                                 $expand = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-expand' ) ) );
  78                                 $collapse = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-collapse' ) ) );
  79                                 $wgOut->addHTML( "<h2 id=\"metadata\">" . wfMsgHtml( 'metadata' ) . "</h2>\n" );
  80                                 $wgOut->addWikiText( $this->makeMetadataTable( $exif ) );
  81                                 $wgOut->addHTML(
  82                                         "<script type=\"text/javascript\" src=\"$wgStylePath/common/metadata.js\"></script>\n" .
  83                                         "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
  84                         }
  85                 } else {
  86                         Article::view();
  87                 }
  88         }
  89
  90         /**
  91          * Create the TOC
  92          *
  93          * @access private
  94          *
  95          * @param bool $metadata Whether or not to show the metadata link
  96          * @return string
  97          */
  98         function showTOC( $metadata ) {
  99                 global $wgLang;
 100                 $r = '<ul id="filetoc">
 101                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>
 102                         <li><a href="#filehistory">' . wfMsgHtml( 'imghistory' ) . '</a></li>
 103                         <li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>' .
 104                         ($metadata ? '<li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>' : '') . '
 105                 </ul>';
 106                 return $r;
 107         }
 108
 109         /**
 110          * Make a table with metadata to be shown in the output page.
 111          *
 112          * @access private
 113          *
 114          * @param array $exif The array containing the EXIF data
 115          * @return string
 116          */
 117         function makeMetadataTable( $exif ) {
 118                 $r = wfMsg( 'metadata-help' ) . "\n\n";
 119                 $r .= "{| id=mw_metadata class=mw_metadata\n";
 120                 $visibleFields = $this->visibleMetadataFields();
 121                 foreach( $exif as $k => $v ) {
 122                         $tag = strtolower( $k );
 123                         $msg = wfMsg( "exif-$tag" );
 124                         $class = "exif-$tag";
 125                         if( !in_array( $tag, $visibleFields ) ) {
 126                                 $class .= ' collapsable';
 127                         }
 128                         $r .= "|- class=\"$class\"\n";
 129                         $r .= "!| $msg\n";
 130                         $r .= "|| $v\n";
 131                 }
 132                 $r .= '|}';
 133                 return $r;
 134         }
 135
 136         /**
 137          * Get a list of EXIF metadata items which should be displayed when
 138          * the metadata table is collapsed.
 139          *
 140          * @return array of strings
 141          * @access private
 142          */
 143         function visibleMetadataFields() {
 144                 $fields = array();
 145                 $lines = explode( "\n", wfMsgForContent( 'metadata-fields' ) );
 146                 foreach( $lines as $line ) {
 147                         if( preg_match( '/^\\*\s*(.*?)\s*$/', $line, $matches ) ) {
 148                                 $fields[] = $matches[1];
 149                         }
 150                 }
 151                 return $fields;
 152         }
 153
 154         /**
 155          * Overloading Article's getContent method.
 156          *
 157          * Omit noarticletext if sharedupload; text will be fetched from the
 158          * shared upload server if possible.
 159          */
 160         function getContent() {
 161                 if( $this->img && $this->img->fromSharedDirectory && 0 == $this->getID() ) {
 162                         return '';
 163                 }
 164                 return Article::getContent();
 165         }
 166
 167         function openShowImage() {
 168                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest;
 169                 global $wgUseImageResize, $wgGenerateThumbnailOnParse;
 170
 171                 $full_url  = $this->img->getURL();
 172                 $anchoropen = '';
 173                 $anchorclose = '';
 174
 175                 if( $wgUser->getOption( 'imagesize' ) == '' ) {
 176                         $sizeSel = User::getDefaultOption( 'imagesize' );
 177                 } else {
 178                         $sizeSel = intval( $wgUser->getOption( 'imagesize' ) );
 179                 }
 180                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 181                         $sizeSel = User::getDefaultOption( 'imagesize' );
 182                 }
 183                 $max = $wgImageLimits[$sizeSel];
 184                 $maxWidth = $max[0];
 185                 $maxHeight = $max[1];
 186                 $sk = $wgUser->getSkin();
 187
 188                 if ( $this->img->exists() ) {
 189                         # image
 190                         $width = $this->img->getWidth();
 191                         $height = $this->img->getHeight();
 192                         $showLink = false;
 193
 194                         if ( $this->img->allowInlineDisplay() and $width and $height) {
 195                                 # image
 196
 197                                 # "Download high res version" link below the image
 198                                 $msg = wfMsgHtml('showbigimage', $width, $height, intval( $this->img->getSize()/1024 ) );
 199
 200                                 # We'll show a thumbnail of this image
 201                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 202                                         # Calculate the thumbnail size.
 203                                         # First case, the limiting factor is the width, not the height.
 204                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 205                                                 $height = round( $height * $maxWidth / $width);
 206                                                 $width = $maxWidth;
 207                                                 # Note that $height <= $maxHeight now.
 208                                         } else {
 209                                                 $newwidth = floor( $width * $maxHeight / $height);
 210                                                 $height = round( $height * $newwidth / $width );
 211                                                 $width = $newwidth;
 212                                                 # Note that $height <= $maxHeight now, but might not be identical
 213                                                 # because of rounding.
 214                                         }
 215
 216                                         if( $wgUseImageResize ) {
 217                                                 $thumbnail = $this->img->getThumbnail( $width, -1, $wgGenerateThumbnailOnParse );
 218                                                 if ( $thumbnail == null ) {
 219                                                         $url = $this->img->getViewURL();
 220                                                 } else {
 221                                                         $url = $thumbnail->getURL();
 222                                                 }
 223                                         } else {
 224                                                 # No resize ability? Show the full image, but scale
 225                                                 # it down in the browser so it fits on the page.
 226                                                 $url = $this->img->getViewURL();
 227                                         }
 228                                         $anchoropen  = "<a href=\"{$full_url}\">";
 229                                         $anchorclose = "</a><br />";
 230                                         if( $this->img->mustRender() ) {
 231                                                 $showLink = true;
 232                                         } else {
 233                                                 $anchorclose .= "\n$anchoropen{$msg}</a>";
 234                                         }
 235                                 } else {
 236                                         $url = $this->img->getViewURL();
 237                                         $showLink = true;
 238                                 }
 239                                 $wgOut->addHTML( '<div class="fullImageLink" id="file">' . $anchoropen .
 240                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
 241                                      htmlspecialchars( $wgRequest->getVal( 'image' ) ).'" />' . $anchorclose . '</div>' );
 242                         } else {
 243                                 #if direct link is allowed but it's not a renderable image, show an icon.
 244                                 if ($this->img->isSafeFile()) {
 245                                         $icon= $this->img->iconThumb();
 246
 247                                         $wgOut->addHTML( '<div class="fullImageLink" id="file"><a href="' . $full_url . '">' .
 248                                         $icon->toHtml() .
 249                                         '</a></div>' );
 250                                 }
 251
 252                                 $showLink = true;
 253                         }
 254
 255
 256                         if ($showLink) {
 257                                 $filename = wfEscapeWikiText( $this->img->getName() );
 258                                 $info = wfMsg( 'fileinfo',
 259                                         ceil($this->img->getSize()/1024.0),
 260                                         $this->img->getMimeType() );
 261
 262                                 global $wgContLang;
 263                                 $dirmark = $wgContLang->getDirMark();
 264                                 if (!$this->img->isSafeFile()) {
 265                                         $warning = wfMsg( 'mediawarning' );
 266                                         $wgOut->addWikiText( <<<END
 267 <div class="fullMedia">
 268 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 269 <span class="fileInfo"> ($info)</span>
 270 </div>
 271
 272 <div class="mediaWarning">$warning</div>
 273 END
 274                                                 );
 275                                 } else {
 276                                         $wgOut->addWikiText( <<<END
 277 <div class="fullMedia">
 278 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> ($info)</span>
 279 </div>
 280 END
 281                                                 );
 282                                 }
 283                         }
 284
 285                         if($this->img->fromSharedDirectory) {
 286                                 $this->printSharedImageText();
 287                         }
 288                 } else {
 289                         # Image does not exist
 290
 291                         $title = Title::makeTitle( NS_SPECIAL, 'Upload' );
 292                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 293                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 294                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 295                 }
 296         }
 297
 298         function printSharedImageText() {
 299                 global $wgRepositoryBaseUrl, $wgFetchCommonsDescriptions, $wgOut, $wgUser;
 300
 301                 $url = $wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey());
 302                 $sharedtext = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml("sharedupload");
 303                 if ($wgRepositoryBaseUrl && !$wgFetchCommonsDescriptions) {
 304
 305                         $sk = $wgUser->getSkin();
 306                         $title = Title::makeTitle( NS_SPECIAL, 'Upload' );
 307                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('shareduploadwiki-linktext'),
 308                         array( 'wpDestFile' => urlencode( $this->img->getName() )));
 309                         $sharedtext .= " " . wfMsgWikiHtml('shareduploadwiki', $link);
 310                 }
 311                 $sharedtext .= "</div>";
 312                 $wgOut->addHTML($sharedtext);
 313
 314                 if ($wgRepositoryBaseUrl && $wgFetchCommonsDescriptions) {
 315                         require_once("HttpFunctions.php");
 316                         $ur = ini_set('allow_url_fopen', true);
 317                         $text = wfGetHTTP($url . '?action=render');
 318                         ini_set('allow_url_fopen', $ur);
 319                         if ($text)
 320                                 $this->mExtraDescription = $text;
 321                 }
 322         }
 323
 324         function getUploadUrl() {
 325                 global $wgServer;
 326                 $uploadTitle = Title::makeTitle( NS_SPECIAL, 'Upload' );
 327                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 328         }
 329
 330         /**
 331          * Print out the various links at the bottom of the image page, e.g. reupload,
 332          * external editing (and instructions link) etc.
 333          */
 334         function uploadLinksBox() {
 335                 global $wgUser, $wgOut;
 336
 337                 if( $this->img->fromSharedDirectory )
 338                         return;
 339
 340                 $sk = $wgUser->getSkin();
 341
 342                 $wgOut->addHtml( '<br /><ul>' );
 343
 344                 # "Upload a new version of this file" link
 345                 if( $wgUser->isAllowed( 'reupload' ) ) {
 346                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 347                         $wgOut->addHtml( "<li><div>{$ulink}</div></li>" );
 348                 }
 349
 350                 # External editing link
 351                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsg( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 352                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 353
 354                 $wgOut->addHtml( '</ul>' );
 355         }
 356
 357         function closeShowImage()
 358         {
 359                 # For overloading
 360
 361         }
 362
 363         /**
 364          * If the page we've just displayed is in the "Image" namespace,
 365          * we follow it with an upload history of the image and its usage.
 366          */
 367         function imageHistory()
 368         {
 369                 global $wgUser, $wgOut, $wgUseExternalEditor;
 370
 371                 $sk = $wgUser->getSkin();
 372
 373                 $line = $this->img->nextHistoryLine();
 374
 375                 if ( $line ) {
 376                         $list =& new ImageHistoryList( $sk );
 377                         $s = $list->beginImageHistoryList() .
 378                                 $list->imageHistoryLine( true, wfTimestamp(TS_MW, $line->img_timestamp),
 379                                         $this->mTitle->getDBkey(),  $line->img_user,
 380                                         $line->img_user_text, $line->img_size, $line->img_description,
 381                                         $line->img_width, $line->img_height
 382                                 );
 383
 384                         while ( $line = $this->img->nextHistoryLine() ) {
 385                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 386                                         $line->oi_archive_name, $line->img_user,
 387                                         $line->img_user_text, $line->img_size, $line->img_description,
 388                                         $line->img_width, $line->img_height
 389                                 );
 390                         }
 391                         $s .= $list->endImageHistoryList();
 392                 } else { $s=''; }
 393                 $wgOut->addHTML( $s );
 394
 395                 # Exist check because we don't want to show this on pages where an image
 396                 # doesn't exist along with the noimage message, that would suck. -ævar
 397                 if( $wgUseExternalEditor && $this->img->exists() ) {
 398                         $this->uploadLinksBox();
 399                 }
 400
 401         }
 402
 403         function imageLinks()
 404         {
 405                 global $wgUser, $wgOut;
 406
 407                 $wgOut->addHTML( '<h2 id="filelinks">' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 408
 409                 $dbr =& wfGetDB( DB_SLAVE );
 410                 $page = $dbr->tableName( 'page' );
 411                 $imagelinks = $dbr->tableName( 'imagelinks' );
 412
 413                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 414                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 415                 $sql = $dbr->limitResult($sql, 500, 0);
 416                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 417
 418                 if ( 0 == $dbr->numRows( $res ) ) {
 419                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 420                         return;
 421                 }
 422                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 423
 424                 $sk = $wgUser->getSkin();
 425                 while ( $s = $dbr->fetchObject( $res ) ) {
 426                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 427                         $link = $sk->makeKnownLinkObj( $name, "" );
 428                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 429                 }
 430                 $wgOut->addHTML( "</ul>\n" );
 431         }
 432
 433         function delete()
 434         {
 435                 global $wgUser, $wgOut, $wgRequest;
 436
 437                 $confirm = $wgRequest->wasPosted();
 438                 $image = $wgRequest->getVal( 'image' );
 439                 $oldimage = $wgRequest->getVal( 'oldimage' );
 440
 441                 # Only sysops can delete images. Previously ordinary users could delete
 442                 # old revisions, but this is no longer the case.
 443                 if ( !$wgUser->isAllowed('delete') ) {
 444                         $wgOut->sysopRequired();
 445                         return;
 446                 }
 447                 if ( $wgUser->isBlocked() ) {
 448                         return $this->blockedIPpage();
 449                 }
 450                 if ( wfReadOnly() ) {
 451                         $wgOut->readOnlyPage();
 452                         return;
 453                 }
 454
 455                 # Better double-check that it hasn't been deleted yet!
 456                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 457                 if ( ( !is_null( $image ) )
 458                   && ( '' == trim( $image ) ) ) {
 459                         $wgOut->showFatalError( wfMsg( 'cannotdelete' ) );
 460                         return;
 461                 }
 462
 463                 $this->img  = new Image( $this->mTitle );
 464
 465                 # Deleting old images doesn't require confirmation
 466                 if ( !is_null( $oldimage ) || $confirm ) {
 467                         if( $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 468                                 $this->doDelete();
 469                         } else {
 470                                 $wgOut->showFatalError( wfMsg( 'sessionfailure' ) );
 471                         }
 472                         return;
 473                 }
 474
 475                 if ( !is_null( $image ) ) {
 476                         $q = '&image=' . urlencode( $image );
 477                 } else if ( !is_null( $oldimage ) ) {
 478                         $q = '&oldimage=' . urlencode( $oldimage );
 479                 } else {
 480                         $q = '';
 481                 }
 482                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 483         }
 484
 485         function doDelete()     {
 486                 global $wgOut, $wgRequest, $wgUseSquid;
 487                 global $wgPostCommitUpdateList;
 488
 489                 $fname = 'ImagePage::doDelete';
 490
 491                 $reason = $wgRequest->getVal( 'wpReason' );
 492                 $oldimage = $wgRequest->getVal( 'oldimage' );
 493
 494                 $dbw =& wfGetDB( DB_MASTER );
 495
 496                 if ( !is_null( $oldimage ) ) {
 497                         if ( strlen( $oldimage ) < 16 ) {
 498                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 499                                 return;
 500                         }
 501                         if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 502                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 503                                 return;
 504                         }
 505                         if ( !$this->doDeleteOldImage( $oldimage ) ) {
 506                                 return;
 507                         }
 508                         $deleted = $oldimage;
 509                 } else {
 510                         $ok = $this->img->delete( $reason );
 511                         if( !$ok ) {
 512                                 # If the deletion operation actually failed, bug out:
 513                                 $wgOut->showFileDeleteError( $this->img->getName() );
 514                                 return;
 515                         }
 516
 517                         # Image itself is now gone, and database is cleaned.
 518                         # Now we remove the image description page.
 519
 520                         $article = new Article( $this->mTitle );
 521                         $article->doDeleteArticle( $reason ); # ignore errors
 522
 523                         $deleted = $this->img->getName();
 524                 }
 525
 526                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 527                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 528
 529                 $loglink = '[[Special:Log/delete|' . wfMsg( 'deletionlog' ) . ']]';
 530                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 531
 532                 $wgOut->addWikiText( $text );
 533
 534                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 535         }
 536
 537         /**
 538          * @return success
 539          */
 540         function doDeleteOldImage( $oldimage )
 541         {
 542                 global $wgOut;
 543
 544                 $ok = $this->img->deleteOld( $oldimage, '' );
 545                 if( !$ok ) {
 546                         # If we actually have a file and can't delete it, throw an error.
 547                         # Something went awry...
 548                         $wgOut->showFileDeleteError( "$oldimage" );
 549                 } else {
 550                         # Log the deletion
 551                         $log = new LogPage( 'delete' );
 552                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 553                 }
 554                 return $ok;
 555         }
 556
 557         function revert() {
 558                 global $wgOut, $wgRequest, $wgUser;
 559
 560                 $oldimage = $wgRequest->getText( 'oldimage' );
 561                 if ( strlen( $oldimage ) < 16 ) {
 562                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 563                         return;
 564                 }
 565                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 566                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 567                         return;
 568                 }
 569
 570                 if ( wfReadOnly() ) {
 571                         $wgOut->readOnlyPage();
 572                         return;
 573                 }
 574                 if( $wgUser->isAnon() ) {
 575                         $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 576                         return;
 577                 }
 578                 if ( ! $this->mTitle->userCanEdit() ) {
 579                         $wgOut->sysopRequired();
 580                         return;
 581                 }
 582                 if ( $wgUser->isBlocked() ) {
 583                         return $this->blockedIPpage();
 584                 }
 585                 if( !$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 586                         $wgOut->showErrorPage( 'internalerror', 'sessionfailure' );
 587                         return;
 588                 }
 589                 $name = substr( $oldimage, 15 );
 590
 591                 $dest = wfImageDir( $name );
 592                 $archive = wfImageArchiveDir( $name );
 593                 $curfile = "{$dest}/{$name}";
 594
 595                 if ( !is_dir( $dest ) ) wfMkdirParents( $dest );
 596                 if ( !is_dir( $archive ) ) wfMkdirParents( $archive );
 597
 598                 if ( ! is_file( $curfile ) ) {
 599                         $wgOut->showFileNotFoundError( htmlspecialchars( $curfile ) );
 600                         return;
 601                 }
 602                 $oldver = wfTimestampNow() . "!{$name}";
 603
 604                 $dbr =& wfGetDB( DB_SLAVE );
 605                 $size = $dbr->selectField( 'oldimage', 'oi_size', array( 'oi_archive_name' => $oldimage )  );
 606
 607                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 608                         $wgOut->showFileRenameError( $curfile, "${archive}/{$oldver}" );
 609                         return;
 610                 }
 611                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 612                         $wgOut->showFileCopyError( "${archive}/{$oldimage}", $curfile );
 613                         return;
 614                 }
 615
 616                 # Record upload and update metadata cache
 617                 $img = Image::newFromName( $name );
 618                 $img->recordUpload( $oldver, wfMsg( "reverted" ) );
 619
 620                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 621                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 622                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 623
 624                 $descTitle = $img->getTitle();
 625                 $wgOut->returnToMain( false, $descTitle->getPrefixedText() );
 626         }
 627
 628         function blockedIPpage() {
 629                 $edit = new EditPage( $this );
 630                 return $edit->blockedIPpage();
 631         }
 632
 633         /**
 634          * Override handling of action=purge
 635          */
 636         function doPurge() {
 637                 $this->img = new Image( $this->mTitle );
 638                 if( $this->img->exists() ) {
 639                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 640                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 641                         $update->doUpdate();
 642                         $this->img->purgeCache();
 643                 } else {
 644                         wfDebug( "ImagePage::doPurge no image\n" );
 645                 }
 646                 parent::doPurge();
 647         }
 648
 649 }
 650
 651 /**
 652  * @todo document
 653  * @package MediaWiki
 654  */
 655 class ImageHistoryList {
 656         function ImageHistoryList( &$skin ) {
 657                 $this->skin =& $skin;
 658         }
 659
 660         function beginImageHistoryList() {
 661                 $s = "\n<h2 id=\"filehistory\">" . wfMsg( 'imghistory' ) . "</h2>\n" .
 662                   "<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 663                 return $s;
 664         }
 665
 666         function endImageHistoryList() {
 667                 $s = "</ul>\n";
 668                 return $s;
 669         }
 670
 671         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description, $width, $height ) {
 672                 global $wgUser, $wgLang, $wgTitle, $wgContLang;
 673
 674                 $datetime = $wgLang->timeanddate( $timestamp, true );
 675                 $del = wfMsg( 'deleteimg' );
 676                 $delall = wfMsg( 'deleteimgcompletely' );
 677                 $cur = wfMsg( 'cur' );
 678
 679                 if ( $iscur ) {
 680                         $url = Image::imageUrl( $img );
 681                         $rlink = $cur;
 682                         if ( $wgUser->isAllowed('delete') ) {
 683                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 684                                   '&action=delete' );
 685                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 686
 687                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 688                         } else {
 689                                 $dlink = $del;
 690                         }
 691                 } else {
 692                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 693                         if( $wgUser->getID() != 0 && $wgTitle->userCanEdit() ) {
 694                                 $token = urlencode( $wgUser->editToken( $img ) );
 695                                 $rlink = $this->skin->makeKnownLinkObj( $wgTitle,
 696                                            wfMsg( 'revertimg' ), 'action=revert&oldimage=' .
 697                                            urlencode( $img ) . "&wpEditToken=$token" );
 698                                 $dlink = $this->skin->makeKnownLinkObj( $wgTitle,
 699                                            $del, 'action=delete&oldimage=' . urlencode( $img ) .
 700                                            "&wpEditToken=$token" );
 701                         } else {
 702                                 # Having live active links for non-logged in users
 703                                 # means that bots and spiders crawling our site can
 704                                 # inadvertently change content. Baaaad idea.
 705                                 $rlink = wfMsg( 'revertimg' );
 706                                 $dlink = $del;
 707                         }
 708                 }
 709
 710                 $userlink = $this->skin->userLink( $user, $usertext ) . $this->skin->userToolLinks( $user, $usertext );
 711                 $nbytes = wfMsgExt( 'nbytes', array( 'parsemag', 'escape' ),
 712                         $wgLang->formatNum( $size ) );
 713                 $widthheight = wfMsg( 'widthheight', $width, $height );
 714                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 715
 716                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a> . . {$userlink} . . {$widthheight} ({$nbytes})";
 717
 718                 $s .= $this->skin->commentBlock( $description, $wgTitle );
 719                 $s .= "</li>\n";
 720                 return $s;
 721         }
 722
 723 }
 724
 725
 726 ?>