includes/ImagePage.php

   1 <?php
   2 /**
   3  * @package MediaWiki
   4  */
   5
   6 /**
   7  *
   8  */
   9 if( !defined( 'MEDIAWIKI' ) )
  10         die();
  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
  22         function view() {
  23                 global $wgUseExternalEditor, $wgOut, $wgShowEXIF;
  24
  25                 $this->img = new Image( $this->mTitle );
  26
  27                 if( $this->mTitle->getNamespace() == NS_IMAGE  ) {
  28                         if ($wgShowEXIF && $this->img->exists()) {
  29                                 $exif = $this->img->getExifData();
  30                                 $showmeta = count($exif) ? true : false;
  31                         } else {
  32                                 $exif = false;
  33                                 $showmeta = false;
  34                         }
  35
  36                         if ($this->img->exists())
  37                                 $wgOut->addHTML($this->showTOC($showmeta));
  38
  39                         $this->openShowImage();
  40                         if ($exif)
  41                                 $wgOut->addWikiText($this->makeMetadataTable($exif));
  42
  43                         # No need to display noarticletext, we use our own message, output in openShowImage()
  44                         if( $this->getID() ) {
  45                                 Article::view();
  46                         } else {
  47                                 # Just need to set the right headers
  48                                 $wgOut->setArticleFlag( true );
  49                                 $wgOut->setRobotpolicy( 'index,follow' );
  50                                 $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  51                                 $wgOut->addMetaTags();
  52                                 $this->viewUpdates();
  53                         }
  54
  55                         $this->closeShowImage();
  56                         $this->imageHistory();
  57                         $this->imageLinks();
  58                 } else {
  59                         Article::view();
  60                 }
  61         }
  62
  63         /**
  64          * Create the TOC
  65          *
  66          * @access private
  67          *
  68          * @param bool $metadata Whether or not to show the metadata link
  69          * @return string
  70          */
  71         function showTOC( $metadata ) {
  72                 global $wgLang;
  73                 $r = '<ul id="filetoc">
  74                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>' .
  75                         ($metadata ? '<li><a href="#metadata">' . wfMsg( 'metadata' ) . '</a></li>' : '') . '
  76                         <li><a href="#filehistory">' . wfMsg( 'imghistory' ) . '</a></li>
  77                         <li><a href="#filelinks">' . wfMsg( 'imagelinks' ) . '</a></li>
  78                 </ul>';
  79                 return $r;
  80         }
  81
  82         /**
  83          * Make a table with metadata to be shown in the output page.
  84          *
  85          * @access private
  86          *
  87          * @param array $exif The array containing the EXIF data
  88          * @return string
  89          */
  90         function makeMetadataTable( $exif ) {
  91                 $r = "{| class=metadata align=right width=250px\n";
  92                 $r .= '|+ id=metadata | '. htmlspecialchars( wfMsg( 'metadata' ) ) . "\n";
  93                 foreach( $exif as $k => $v ) {
  94                         $tag = strtolower( $k );
  95                         $r .= "! class=$tag |" . wfMsg( "exif-$tag" ) . "\n";
  96                         $r .= "| class=$tag |" . htmlspecialchars( $v ) . "\n";
  97                         $r .= "|-\n";
  98                 }
  99                 return substr($r, 0, -3) . '|}';
 100         }
 101
 102         /**
 103          * Overloading Article's getContent method.
 104          * Omit noarticletext if sharedupload
 105          *
 106          * @param $noredir If true, do not follow redirects
 107          */
 108         function getContent( $noredir )
 109         {
 110                 if ( $this->img && $this->img->fromSharedDirectory && 0 == $this->getID() ) {
 111                         return '';
 112                 }
 113                 return Article::getContent( $noredir );
 114         }
 115
 116         function openShowImage()
 117         {
 118                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest,
 119                        $wgUseImageResize, $wgRepositoryBaseUrl,
 120                        $wgUseExternalEditor, $wgServer;
 121                 $full_url  = $this->img->getViewURL();
 122                 $anchoropen = '';
 123                 $anchorclose = '';
 124
 125                 if( $wgUser->getOption( 'imagesize' ) == '' ) {
 126                         $sizeSel = User::getDefaultOption( 'imagesize' );
 127                 } else {
 128                         $sizeSel = IntVal( $wgUser->getOption( 'imagesize' ) );
 129                 }
 130                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 131                         $sizeSel = User::getDefaultOption( 'imagesize' );
 132                 }
 133                 $max = $wgImageLimits[$sizeSel];
 134                 $maxWidth = $max[0];
 135                 $maxHeight = $max[1];
 136                 $sk = $wgUser->getSkin();
 137
 138                 if ( $this->img->exists() ) {
 139                         # image
 140                         $width = $this->img->getWidth();
 141                         $height = $this->img->getHeight();
 142                         $showLink = false;
 143
 144                         if ( $this->img->allowInlineDisplay() and $width and $height) {
 145                                 # image
 146
 147                                 # "Download high res version" link below the image
 148                                 $msg = wfMsg('showbigimage', $width, $height, intval( $this->img->getSize()/1024 ) );
 149                                 if ( $width > $maxWidth ) {
 150                                         $height = floor( $height * $maxWidth / $width );
 151                                         $width  = $maxWidth;
 152                                 }
 153                                 if ( $height > $maxHeight ) {
 154                                         $width = floor( $width * $maxHeight / $height );
 155                                         $height = $maxHeight;
 156                                 }
 157                                 if ( !$this->img->mustRender()
 158                                    && ( $width != $this->img->getWidth() || $height != $this->img->getHeight() ) ) {
 159                                         if( $wgUseImageResize ) {
 160                                                 $thumbnail = $this->img->getThumbnail( $width );
 161                                                 $url = $thumbnail->getUrl();
 162                                         } else {
 163                                                 # No resize ability? Show the full image, but scale
 164                                                 # it down in the browser so it fits on the page.
 165                                                 $url = $full_url;
 166                                         }
 167                                         $anchoropen  = "<a href=\"{$full_url}\">";
 168                                         $anchorclose = "</a><br />\n$anchoropen{$msg}</a>";
 169                                 } else {
 170                                         $url = $full_url;
 171                                         $showLink = $this->img->mustRender();
 172                                 }
 173                                 $wgOut->addHTML( '<div class="fullImageLink" id="file">' . $anchoropen .
 174                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
 175                                      htmlspecialchars( $wgRequest->getVal( 'image' ) ).'" />' . $anchorclose . '</div>' );
 176                         } else {
 177                                 #if direct link is allowed but it's not a renderable image, show an icon.
 178                                 if ($this->img->isSafeFile()) {
 179                                         $icon= $this->img->iconThumb();
 180
 181                                         $wgOut->addHTML( '<div class="fullImageLink" id="file"><a href="' . $full_url . '">' .
 182                                         $icon->toHtml() .
 183                                         '</a></div>' );
 184                                 }
 185
 186                                 $showLink = true;
 187                         }
 188
 189
 190                         if ($showLink) {
 191                                 $s= $sk->makeMediaLink( $this->img->getName(), '', '', true );
 192                                 $info= wfMsg( 'fileinfo', ceil($this->img->getSize()/1024.0), $this->img->getMimeType() );
 193
 194                                 if (!$this->img->isSafeFile()) {
 195                                         $wgOut->addHTML("<div class=\"fullMedia\">");
 196                                         $wgOut->addHTML("<span class=\"dangerousLink\">");
 197                                         $wgOut->addHTML($s);
 198                                         $wgOut->addHTML("</span>");
 199
 200                                         $wgOut->addHTML("<span class=\"fileInfo\"> (");
 201                                         $wgOut->addWikiText( $info, false );
 202                                         $wgOut->addHTML(")</span>");
 203                                         $wgOut->addHTML("</div>");
 204
 205                                         #this should be formated a little nicer. Is CSS sufficient?
 206                                         $wgOut->addHTML("<div class=\"mediaWarning\">");
 207                                         $wgOut->addWikiText( wfMsg( 'mediawarning' ) );
 208                                         $wgOut->addHTML('</div>');
 209
 210                                 } else {
 211                                         $wgOut->addHTML("<div class=\"fullMedia\">");
 212                                         $wgOut->addHTML($s);
 213
 214                                         $wgOut->addHTML("<span class=\"fileInfo\"> (");
 215                                         $wgOut->addWikiText( $info, false );
 216                                         $wgOut->addHTML(")</span>");
 217
 218                                         $wgOut->addHTML("</div>");
 219                                 }
 220                         }
 221
 222                         if($this->img->fromSharedDirectory) {
 223                                 $sharedtext="<div class=\"sharedUploadNotice\">" . wfMsg("sharedupload");
 224                                 if($wgRepositoryBaseUrl) {
 225                                         $sharedtext .= " ". wfMsg("shareduploadwiki",$wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey()));
 226                                 }
 227                                 $sharedtext.="</div>";
 228                                 $wgOut->addWikiText($sharedtext);
 229                         }
 230
 231                 } else {
 232                         # Image does not exist
 233                         $wgOut->addWikiText( wfMsg( 'noimage', $this->getUploadUrl() ) );
 234                 }
 235         }
 236
 237         function getUploadUrl() {
 238                 global $wgServer;
 239                 $uploadTitle = Title::makeTitle( NS_SPECIAL, 'Upload' );
 240                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 241         }
 242
 243
 244         function uploadLinksBox()
 245         {
 246                 global $wgUser,$wgOut;
 247                 $sk = $wgUser->getSkin();
 248                 $wgOut->addHTML( '<br /><ul><li>' );
 249                 $wgOut->addWikiText( '<div>'. wfMsg( 'uploadnewversion', $this->getUploadUrl() ) .'</div>' );
 250                 $wgOut->addHTML( '</li><li>' );
 251                 $wgOut->addHTML( $sk->makeKnownLinkObj( $this->mTitle,
 252                         wfMsg( 'edit-externally' ), "action=edit&externaledit=true&mode=file" ) );
 253                 $wgOut->addWikiText( '<div>' .  wfMsg('edit-externally-help') . '</div>' );
 254                 $wgOut->addHTML( '</li></ul>' );
 255         }
 256
 257         function closeShowImage()
 258         {
 259                 # For overloading
 260
 261         }
 262
 263         /**
 264          * If the page we've just displayed is in the "Image" namespace,
 265          * we follow it with an upload history of the image and its usage.
 266          */
 267         function imageHistory()
 268         {
 269                 global $wgUser, $wgOut, $wgUseExternalEditor;
 270
 271                 $sk = $wgUser->getSkin();
 272
 273                 $line = $this->img->nextHistoryLine();
 274
 275                 if ( $line ) {
 276                         $list =& new ImageHistoryList( $sk );
 277                         $s = $list->beginImageHistoryList() .
 278                                 $list->imageHistoryLine( true, $line->img_timestamp,
 279                                         $this->mTitle->getDBkey(),  $line->img_user,
 280                                         $line->img_user_text, $line->img_size, $line->img_description );
 281
 282                         while ( $line = $this->img->nextHistoryLine() ) {
 283                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 284                                 $line->oi_archive_name, $line->img_user,
 285                                 $line->img_user_text, $line->img_size, $line->img_description );
 286                         }
 287                         $s .= $list->endImageHistoryList();
 288                 } else { $s=''; }
 289                 $wgOut->addHTML( $s );
 290
 291                 # Exist check because we don't want to show this on pages where an image
 292                 # doesn't exist along with the noimage message, that would suck. -ævar
 293                 if( $wgUseExternalEditor && $this->img->exists() ) {
 294                         $this->uploadLinksBox();
 295                 }
 296
 297         }
 298
 299         function imageLinks()
 300         {
 301                 global $wgUser, $wgOut;
 302
 303                 $wgOut->addHTML( '<h2 id="filelinks">' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 304
 305                 $dbr =& wfGetDB( DB_SLAVE );
 306                 $page = $dbr->tableName( 'page' );
 307                 $imagelinks = $dbr->tableName( 'imagelinks' );
 308
 309                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 310                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id"
 311                   . " LIMIT 500"; # quickie emergency brake
 312                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 313
 314                 if ( 0 == $dbr->numRows( $res ) ) {
 315                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 316                         return;
 317                 }
 318                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 319
 320                 $sk = $wgUser->getSkin();
 321                 while ( $s = $dbr->fetchObject( $res ) ) {
 322                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 323                         $link = $sk->makeKnownLinkObj( $name, "" );
 324                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 325                 }
 326                 $wgOut->addHTML( "</ul>\n" );
 327         }
 328
 329         function delete()
 330         {
 331                 global $wgUser, $wgOut, $wgRequest;
 332
 333                 $confirm = $wgRequest->getBool( 'wpConfirmB' );
 334                 $image = $wgRequest->getVal( 'image' );
 335                 $oldimage = $wgRequest->getVal( 'oldimage' );
 336
 337                 # Only sysops can delete images. Previously ordinary users could delete
 338                 # old revisions, but this is no longer the case.
 339                 if ( !$wgUser->isAllowed('delete') ) {
 340                         $wgOut->sysopRequired();
 341                         return;
 342                 }
 343                 if ( wfReadOnly() ) {
 344                         $wgOut->readOnlyPage();
 345                         return;
 346                 }
 347
 348                 # Better double-check that it hasn't been deleted yet!
 349                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 350                 if ( ( !is_null( $image ) )
 351                   && ( '' == trim( $image ) ) ) {
 352                         $wgOut->fatalError( wfMsg( 'cannotdelete' ) );
 353                         return;
 354                 }
 355
 356                 $this->img  = new Image( $this->mTitle );
 357
 358                 # Deleting old images doesn't require confirmation
 359                 if ( !is_null( $oldimage ) || $confirm ) {
 360                         if( $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 361                                 $this->doDelete();
 362                         } else {
 363                                 $wgOut->fatalError( wfMsg( 'sessionfailure' ) );
 364                         }
 365                         return;
 366                 }
 367
 368                 if ( !is_null( $image ) ) {
 369                         $q = '&image=' . urlencode( $image );
 370                 } else if ( !is_null( $oldimage ) ) {
 371                         $q = '&oldimage=' . urlencode( $oldimage );
 372                 } else {
 373                         $q = '';
 374                 }
 375                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 376         }
 377
 378         function doDelete()
 379         {
 380                 global $wgOut, $wgUser, $wgContLang, $wgRequest;
 381                 global $wgUseSquid, $wgInternalServer, $wgPostCommitUpdateList;
 382                 $fname = 'ImagePage::doDelete';
 383
 384                 $reason = $wgRequest->getVal( 'wpReason' );
 385                 $oldimage = $wgRequest->getVal( 'oldimage' );
 386
 387                 $dbw =& wfGetDB( DB_MASTER );
 388
 389                 if ( !is_null( $oldimage ) ) {
 390                         if ( strlen( $oldimage ) < 16 ) {
 391                                 $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 392                                 return;
 393                         }
 394                         if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 395                                 $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 396                                 return;
 397                         }
 398
 399                         # Invalidate description page cache
 400                         $this->mTitle->invalidateCache();
 401
 402                         # Squid purging
 403                         if ( $wgUseSquid ) {
 404                                 $urlArr = Array(
 405                                         $wgInternalServer.wfImageArchiveUrl( $oldimage ),
 406                                         $wgInternalServer.$this->mTitle->getFullURL()
 407                                 );
 408                                 wfPurgeSquidServers($urlArr);
 409                         }
 410                         $this->doDeleteOldImage( $oldimage );
 411                         $dbw->delete( 'oldimage', array( 'oi_archive_name' => $oldimage ) );
 412                         $deleted = $oldimage;
 413                 } else {
 414                         $image = $this->mTitle->getDBkey();
 415                         $dest = wfImageDir( $image );
 416                         $archive = wfImageDir( $image );
 417
 418                         # Delete the image file if it exists; due to sync problems
 419                         # or manual trimming sometimes the file will be missing.
 420                         $targetFile = "{$dest}/{$image}";
 421                         if( file_exists( $targetFile ) && ! @unlink( $targetFile ) ) {
 422                                 # If the deletion operation actually failed, bug out:
 423                                 $wgOut->fileDeleteError( $targetFile );
 424                                 return;
 425                         }
 426                         $dbw->delete( 'image', array( 'img_name' => $image ) );
 427                         $res = $dbw->select( 'oldimage', array( 'oi_archive_name' ), array( 'oi_name' => $image ) );
 428
 429                         # Purge archive URLs from the squid
 430                         $urlArr = Array();
 431                         while ( $s = $dbw->fetchObject( $res ) ) {
 432                                 $this->doDeleteOldImage( $s->oi_archive_name );
 433                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 434                         }
 435
 436                         # And also the HTML of all pages using this image
 437                         $linksTo = $this->img->getLinksTo();
 438                         if ( $wgUseSquid ) {
 439                                 $u = SquidUpdate::newFromTitles( $linksTo, $urlArr );
 440                                 array_push( $wgPostCommitUpdateList, $u );
 441                         }
 442
 443                         $dbw->delete( 'oldimage', array( 'oi_name' => $image ) );
 444
 445                         # Image itself is now gone, and database is cleaned.
 446                         # Now we remove the image description page.
 447
 448                         $article = new Article( $this->mTitle );
 449                         $article->doDeleteArticle( $reason ); # ignore errors
 450
 451                         # Invalidate parser cache and client cache for pages using this image
 452                         # This is left until relatively late to reduce lock time
 453                         Title::touchArray( $linksTo );
 454
 455                         /* Delete thumbnails and refresh image metadata cache */
 456                         $this->img->purgeCache();
 457
 458
 459                         $deleted = $image;
 460                 }
 461
 462                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 463                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 464
 465                 $sk = $wgUser->getSkin();
 466                 $loglink = $sk->makeKnownLinkObj(
 467                         Title::makeTitle( NS_SPECIAL, 'Log/delete' ),
 468                         wfMsg( 'deletionlog' ) );
 469
 470                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 471
 472                 $wgOut->addHTML( '<p>' . $text . "</p>\n" );
 473                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 474         }
 475
 476         function doDeleteOldImage( $oldimage )
 477         {
 478                 global $wgOut;
 479
 480                 $name = substr( $oldimage, 15 );
 481                 $archive = wfImageArchiveDir( $name );
 482
 483                 # Delete the image if it exists. Sometimes the file will be missing
 484                 # due to manual intervention or weird sync problems; treat that
 485                 # condition gracefully and continue to delete the database entry.
 486                 # Also some records may end up with an empty oi_archive_name field
 487                 # if the original file was missing when a new upload was made;
 488                 # don't try to delete the directory then!
 489                 #
 490                 $targetFile = "{$archive}/{$oldimage}";
 491                 if( $oldimage != '' && file_exists( $targetFile ) && !@unlink( $targetFile ) ) {
 492                         # If we actually have a file and can't delete it, throw an error.
 493                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 494                 } else {
 495                         # Log the deletion
 496                         $log = new LogPage( 'delete' );
 497                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 498                 }
 499         }
 500
 501         function revert()
 502         {
 503                 global $wgOut, $wgRequest, $wgUser;
 504                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 505
 506                 $oldimage = $wgRequest->getText( 'oldimage' );
 507                 if ( strlen( $oldimage ) < 16 ) {
 508                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 509                         return;
 510                 }
 511                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 512                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 513                         return;
 514                 }
 515
 516                 if ( wfReadOnly() ) {
 517                         $wgOut->readOnlyPage();
 518                         return;
 519                 }
 520                 if( $wgUser->isAnon() ) {
 521                         $wgOut->errorpage( 'uploadnologin', 'uploadnologintext' );
 522                         return;
 523                 }
 524                 if ( ! $this->mTitle->userCanEdit() ) {
 525                         $wgOut->sysopRequired();
 526                         return;
 527                 }
 528                 if( !$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 529                         $wgOut->errorpage( 'internalerror', 'sessionfailure' );
 530                         return;
 531                 }
 532                 $name = substr( $oldimage, 15 );
 533
 534                 $dest = wfImageDir( $name );
 535                 $archive = wfImageArchiveDir( $name );
 536                 $curfile = "{$dest}/{$name}";
 537
 538                 if ( ! is_file( $curfile ) ) {
 539                         $wgOut->fileNotFoundError( htmlspecialchars( $curfile ) );
 540                         return;
 541                 }
 542                 $oldver = wfTimestampNow() . "!{$name}";
 543
 544                 $dbr =& wfGetDB( DB_SLAVE );
 545                 $size = $dbr->selectField( 'oldimage', 'oi_size', array( 'oi_archive_name' => $oldimage )  );
 546
 547                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 548                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 549                         return;
 550                 }
 551                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 552                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 553                 }
 554
 555                 # Record upload and update metadata cache
 556                 $img = Image::newFromName( $name );
 557                 $img->recordUpload( $oldver, wfMsg( "reverted" ) );
 558
 559                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 560                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 561                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 562
 563                 $descTitle = $img->getTitle();
 564                 $wgOut->returnToMain( false, $descTitle->getPrefixedText() );
 565         }
 566 }
 567
 568 /**
 569  * @todo document
 570  * @package MediaWiki
 571  */
 572 class ImageHistoryList {
 573         function ImageHistoryList( &$skin ) {
 574                 $this->skin =& $skin;
 575         }
 576
 577         function beginImageHistoryList() {
 578                 $s = "\n<h2 id=\"filehistory\">" . wfMsg( 'imghistory' ) . "</h2>\n" .
 579                   "<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 580                 return $s;
 581         }
 582
 583         function endImageHistoryList() {
 584                 $s = "</ul>\n";
 585                 return $s;
 586         }
 587
 588         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description ) {
 589                 global $wgUser, $wgLang, $wgContLang, $wgTitle;
 590
 591                 $datetime = $wgLang->timeanddate( $timestamp, true );
 592                 $del = wfMsg( 'deleteimg' );
 593                 $delall = wfMsg( 'deleteimgcompletely' );
 594                 $cur = wfMsg( 'cur' );
 595
 596                 if ( $iscur ) {
 597                         $url = Image::imageUrl( $img );
 598                         $rlink = $cur;
 599                         if ( $wgUser->isAllowed('delete') ) {
 600                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 601                                   '&action=delete' );
 602                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 603
 604                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 605                         } else {
 606                                 $dlink = $del;
 607                         }
 608                 } else {
 609                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 610                         if( $wgUser->getID() != 0 && $wgTitle->userCanEdit() ) {
 611                                 $token = urlencode( $wgUser->editToken( $img ) );
 612                                 $rlink = $this->skin->makeKnownLinkObj( $wgTitle,
 613                                            wfMsg( 'revertimg' ), 'action=revert&oldimage=' .
 614                                            urlencode( $img ) . "&wpEditToken=$token" );
 615                                 $dlink = $this->skin->makeKnownLinkObj( $wgTitle,
 616                                            $del, 'action=delete&oldimage=' . urlencode( $img ) .
 617                                            "&wpEditToken=$token" );
 618                         } else {
 619                                 # Having live active links for non-logged in users
 620                                 # means that bots and spiders crawling our site can
 621                                 # inadvertently change content. Baaaad idea.
 622                                 $rlink = wfMsg( 'revertimg' );
 623                                 $dlink = $del;
 624                         }
 625                 }
 626                 if ( 0 == $user ) {
 627                         $userlink = $usertext;
 628                 } else {
 629                         $userlink = $this->skin->makeLinkObj(
 630                                 Title::makeTitle( NS_USER, $usertext ),
 631                                 $usertext );
 632                 }
 633                 $nbytes = wfMsg( 'nbytes', $size );
 634                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 635
 636                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a>"
 637                   . " . . {$userlink} ({$nbytes})";
 638
 639                 $s .= $this->skin->commentBlock( $description, $wgTitle );
 640                 $s .= "</li>\n";
 641                 return $s;
 642         }
 643
 644 }
 645
 646
 647 ?>