includes/ImagePage.php

   1 <?php
   2 /**
   3  * @package MediaWiki
   4  */
   5
   6 /**
   7  *
   8  */
   9 if( !defined( 'MEDIAWIKI' ) )
  10         die( -1 );
  11
  12 /**
  13  * Special handling for image description pages
  14  * @package MediaWiki
  15  */
  16 class ImagePage extends Article {
  17
  18         /* private */ var $img;  // Image object this page is shown for
  19         var $mExtraDescription = false;
  20
  21         /**
  22          * Handler for action=render
  23          * Include body text only; none of the image extras
  24          */
  25         function render() {
  26                 global $wgOut;
  27                 $wgOut->setArticleBodyOnly( true );
  28                 $wgOut->addSecondaryWikitext( $this->getContent() );
  29         }
  30
  31         function view() {
  32                 global $wgOut, $wgShowEXIF;
  33
  34                 $this->img = new Image( $this->mTitle );
  35
  36                 if( $this->mTitle->getNamespace() == NS_IMAGE  ) {
  37                         if ($wgShowEXIF && $this->img->exists()) {
  38                                 $exif = $this->img->getExifData();
  39                                 $showmeta = count($exif) ? true : false;
  40                         } else {
  41                                 $exif = false;
  42                                 $showmeta = false;
  43                         }
  44
  45                         if ($this->img->exists())
  46                                 $wgOut->addHTML($this->showTOC($showmeta));
  47
  48                         $this->openShowImage();
  49
  50                         # No need to display noarticletext, we use our own message, output in openShowImage()
  51                         if( $this->getID() ) {
  52                                 Article::view();
  53                         } else {
  54                                 # Just need to set the right headers
  55                                 $wgOut->setArticleFlag( true );
  56                                 $wgOut->setRobotpolicy( 'index,follow' );
  57                                 $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  58                                 $this->viewUpdates();
  59                         }
  60
  61                         # Show shared description, if needed
  62                         if( $this->mExtraDescription ) {
  63                                 $fol = wfMsg( 'shareddescriptionfollows' );
  64                                 if( $fol != '-' ) {
  65                                         $wgOut->addWikiText( $fol );
  66                                 }
  67                                 $wgOut->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . '</div>' );
  68                         }
  69
  70                         $this->closeShowImage();
  71                         $this->imageHistory();
  72                         $this->imageLinks();
  73                         if( $exif ) {
  74                                 global $wgStylePath;
  75                                 $expand = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-expand' ) ) );
  76                                 $collapse = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-collapse' ) ) );
  77                                 $wgOut->addHTML( "<h2 id=\"metadata\">" . wfMsgHtml( 'metadata' ) . "</h2>\n" );
  78                                 $wgOut->addWikiText( $this->makeMetadataTable( $exif ) );
  79                                 $wgOut->addHTML(
  80                                         "<script type=\"text/javascript\" src=\"$wgStylePath/common/metadata.js\"></script>\n" .
  81                                         "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
  82                         }
  83                 } else {
  84                         Article::view();
  85                 }
  86         }
  87
  88         /**
  89          * Create the TOC
  90          *
  91          * @access private
  92          *
  93          * @param bool $metadata Whether or not to show the metadata link
  94          * @return string
  95          */
  96         function showTOC( $metadata ) {
  97                 global $wgLang;
  98                 $r = '<ul id="filetoc">
  99                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>
 100                         <li><a href="#filehistory">' . wfMsgHtml( 'imghistory' ) . '</a></li>
 101                         <li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>' .
 102                         ($metadata ? '<li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>' : '') . '
 103                 </ul>';
 104                 return $r;
 105         }
 106
 107         /**
 108          * Make a table with metadata to be shown in the output page.
 109          *
 110          * @access private
 111          *
 112          * @param array $exif The array containing the EXIF data
 113          * @return string
 114          */
 115         function makeMetadataTable( $exif ) {
 116                 $r = wfMsg( 'metadata-help' ) . "\n\n";
 117                 $r .= "{| id=mw_metadata class=mw_metadata\n";
 118                 $visibleFields = $this->visibleMetadataFields();
 119                 foreach( $exif as $k => $v ) {
 120                         $tag = strtolower( $k );
 121                         $msg = wfMsg( "exif-$tag" );
 122                         $class = "exif-$tag";
 123                         if( !in_array( $tag, $visibleFields ) ) {
 124                                 $class .= ' collapsable';
 125                         }
 126                         $r .= "|- class=\"$class\"\n";
 127                         $r .= "!| $msg\n";
 128                         $r .= "|| $v\n";
 129                 }
 130                 $r .= '|}';
 131                 return $r;
 132         }
 133
 134         /**
 135          * Get a list of EXIF metadata items which should be displayed when
 136          * the metadata table is collapsed.
 137          *
 138          * @return array of strings
 139          * @access private
 140          */
 141         function visibleMetadataFields() {
 142                 $fields = array();
 143                 $lines = explode( "\n", wfMsgForContent( 'metadata-fields' ) );
 144                 foreach( $lines as $line ) {
 145                         if( preg_match( '/^\\*\s*(.*?)\s*$/', $line, $matches ) ) {
 146                                 $fields[] = $matches[1];
 147                         }
 148                 }
 149                 return $fields;
 150         }
 151
 152         /**
 153          * Overloading Article's getContent method.
 154          *
 155          * Omit noarticletext if sharedupload; text will be fetched from the
 156          * shared upload server if possible.
 157          */
 158         function getContent() {
 159                 if( $this->img && $this->img->fromSharedDirectory && 0 == $this->getID() ) {
 160                         return '';
 161                 }
 162                 return Article::getContent();
 163         }
 164
 165         function openShowImage() {
 166                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest, $wgUseImageResize;
 167
 168                 $full_url  = $this->img->getURL();
 169                 $anchoropen = '';
 170                 $anchorclose = '';
 171
 172                 if( $wgUser->getOption( 'imagesize' ) == '' ) {
 173                         $sizeSel = User::getDefaultOption( 'imagesize' );
 174                 } else {
 175                         $sizeSel = intval( $wgUser->getOption( 'imagesize' ) );
 176                 }
 177                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 178                         $sizeSel = User::getDefaultOption( 'imagesize' );
 179                 }
 180                 $max = $wgImageLimits[$sizeSel];
 181                 $maxWidth = $max[0];
 182                 $maxHeight = $max[1];
 183                 $sk = $wgUser->getSkin();
 184
 185                 if ( $this->img->exists() ) {
 186                         # image
 187                         $width = $this->img->getWidth();
 188                         $height = $this->img->getHeight();
 189                         $showLink = false;
 190
 191                         if ( $this->img->allowInlineDisplay() and $width and $height) {
 192                                 # image
 193
 194                                 # "Download high res version" link below the image
 195                                 $msg = wfMsgHtml('showbigimage', $width, $height, intval( $this->img->getSize()/1024 ) );
 196
 197                                 # We'll show a thumbnail of this image
 198                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 199                                         # Calculate the thumbnail size.
 200                                         # First case, the limiting factor is the width, not the height.
 201                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 202                                                 $height = round( $height * $maxWidth / $width);
 203                                                 $width = $maxWidth;
 204                                                 # Note that $height <= $maxHeight now.
 205                                         } else {
 206                                                 $newwidth = floor( $width * $maxHeight / $height);
 207                                                 $height = round( $height * $newwidth / $width );
 208                                                 $width = $newwidth;
 209                                                 # Note that $height <= $maxHeight now, but might not be identical
 210                                                 # because of rounding.
 211                                         }
 212
 213                                         if( $wgUseImageResize ) {
 214                                                 $thumbnail = $this->img->getThumbnail( $width );
 215                                                 if ( $thumbnail == null ) {
 216                                                         $url = $this->img->getViewURL();
 217                                                 } else {
 218                                                         $url = $thumbnail->getURL();
 219                                                 }
 220                                         } else {
 221                                                 # No resize ability? Show the full image, but scale
 222                                                 # it down in the browser so it fits on the page.
 223                                                 $url = $this->img->getViewURL();
 224                                         }
 225                                         $anchoropen  = "<a href=\"{$full_url}\">";
 226                                         $anchorclose = "</a><br />";
 227                                         if( $this->img->mustRender() ) {
 228                                                 $showLink = true;
 229                                         } else {
 230                                                 $anchorclose .= "\n$anchoropen{$msg}</a>";
 231                                         }
 232                                 } else {
 233                                         $url = $this->img->getViewURL();
 234                                         $showLink = true;
 235                                 }
 236                                 $wgOut->addHTML( '<div class="fullImageLink" id="file">' . $anchoropen .
 237                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
 238                                      htmlspecialchars( $wgRequest->getVal( 'image' ) ).'" />' . $anchorclose . '</div>' );
 239                         } else {
 240                                 #if direct link is allowed but it's not a renderable image, show an icon.
 241                                 if ($this->img->isSafeFile()) {
 242                                         $icon= $this->img->iconThumb();
 243
 244                                         $wgOut->addHTML( '<div class="fullImageLink" id="file"><a href="' . $full_url . '">' .
 245                                         $icon->toHtml() .
 246                                         '</a></div>' );
 247                                 }
 248
 249                                 $showLink = true;
 250                         }
 251
 252
 253                         if ($showLink) {
 254                                 $filename = wfEscapeWikiText( $this->img->getName() );
 255                                 $info = wfMsg( 'fileinfo',
 256                                         ceil($this->img->getSize()/1024.0),
 257                                         $this->img->getMimeType() );
 258
 259                                 if (!$this->img->isSafeFile()) {
 260                                         $warning = wfMsg( 'mediawarning' );
 261                                         $wgOut->addWikiText( <<<END
 262 <div class="fullMedia">
 263 <span class="dangerousLink">[[Media:$filename|$filename]]</span>
 264 <span class="fileInfo"> ($info)</span>
 265 </div>
 266
 267 <div class="mediaWarning">$warning</div>
 268 END
 269                                                 );
 270                                 } else {
 271                                         $wgOut->addWikiText( <<<END
 272 <div class="fullMedia">
 273 [[Media:$filename|$filename]] <span class="fileInfo"> ($info)</span>
 274 </div>
 275 END
 276                                                 );
 277                                 }
 278                         }
 279
 280                         if($this->img->fromSharedDirectory) {
 281                                 $this->printSharedImageText();
 282                         }
 283                 } else {
 284                         # Image does not exist
 285
 286                         $title = Title::makeTitle( NS_SPECIAL, 'Upload' );
 287                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 288                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 289                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 290                 }
 291         }
 292
 293         function printSharedImageText() {
 294                 global $wgRepositoryBaseUrl, $wgFetchCommonsDescriptions, $wgOut, $wgUser;
 295
 296                 $url = $wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey());
 297                 $sharedtext = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml("sharedupload");
 298                 if ($wgRepositoryBaseUrl && !$wgFetchCommonsDescriptions) {
 299
 300                         $sk = $wgUser->getSkin();
 301                         $title = Title::makeTitle( NS_SPECIAL, 'Upload' );
 302                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('shareduploadwiki-linktext'),
 303                         array( 'wpDestFile' => urlencode( $this->img->getName() )));
 304                         $sharedtext .= " " . wfMsgWikiHtml('shareduploadwiki', $link);
 305                 }
 306                 $sharedtext .= "</div>";
 307                 $wgOut->addHTML($sharedtext);
 308
 309                 if ($wgRepositoryBaseUrl && $wgFetchCommonsDescriptions) {
 310                         $ur = ini_set('allow_url_fopen', true);
 311                         $text = HttpFunctions::getHTTP($url . '?action=render');
 312                         ini_set('allow_url_fopen', $ur);
 313                         if ($text)
 314                                 $this->mExtraDescription = $text;
 315                 }
 316         }
 317
 318         function getUploadUrl() {
 319                 global $wgServer;
 320                 $uploadTitle = Title::makeTitle( NS_SPECIAL, 'Upload' );
 321                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 322         }
 323
 324         /**
 325          * Print out the various links at the bottom of the image page, e.g. reupload,
 326          * external editing (and instructions link) etc.
 327          */
 328         function uploadLinksBox() {
 329                 global $wgUser, $wgOut;
 330
 331                 if( $this->img->fromSharedDirectory )
 332                         return;
 333
 334                 $sk = $wgUser->getSkin();
 335
 336                 $wgOut->addHtml( '<br /><ul>' );
 337
 338                 # "Upload a new version of this file" link
 339                 if( $wgUser->isAllowed( 'reupload' ) ) {
 340                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 341                         $wgOut->addHtml( "<li><div>{$ulink}</div></li>" );
 342                 }
 343
 344                 # External editing link
 345                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsg( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 346                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 347
 348                 $wgOut->addHtml( '</ul>' );
 349         }
 350
 351         function closeShowImage()
 352         {
 353                 # For overloading
 354
 355         }
 356
 357         /**
 358          * If the page we've just displayed is in the "Image" namespace,
 359          * we follow it with an upload history of the image and its usage.
 360          */
 361         function imageHistory()
 362         {
 363                 global $wgUser, $wgOut, $wgUseExternalEditor;
 364
 365                 $sk = $wgUser->getSkin();
 366
 367                 $line = $this->img->nextHistoryLine();
 368
 369                 if ( $line ) {
 370                         $list =& new ImageHistoryList( $sk );
 371                         $s = $list->beginImageHistoryList() .
 372                                 $list->imageHistoryLine( true, wfTimestamp(TS_MW, $line->img_timestamp),
 373                                         $this->mTitle->getDBkey(),  $line->img_user,
 374                                         $line->img_user_text, $line->img_size, $line->img_description,
 375                                         $line->img_width, $line->img_height
 376                                 );
 377
 378                         while ( $line = $this->img->nextHistoryLine() ) {
 379                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 380                                         $line->oi_archive_name, $line->img_user,
 381                                         $line->img_user_text, $line->img_size, $line->img_description,
 382                                         $line->img_width, $line->img_height
 383                                 );
 384                         }
 385                         $s .= $list->endImageHistoryList();
 386                 } else { $s=''; }
 387                 $wgOut->addHTML( $s );
 388
 389                 # Exist check because we don't want to show this on pages where an image
 390                 # doesn't exist along with the noimage message, that would suck. -ævar
 391                 if( $wgUseExternalEditor && $this->img->exists() ) {
 392                         $this->uploadLinksBox();
 393                 }
 394
 395         }
 396
 397         function imageLinks()
 398         {
 399                 global $wgUser, $wgOut;
 400
 401                 $wgOut->addHTML( '<h2 id="filelinks">' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 402
 403                 $dbr =& wfGetDB( DB_SLAVE );
 404                 $page = $dbr->tableName( 'page' );
 405                 $imagelinks = $dbr->tableName( 'imagelinks' );
 406
 407                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 408                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 409                 $sql = $dbr->limitResult($sql, 500, 0);
 410                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 411
 412                 if ( 0 == $dbr->numRows( $res ) ) {
 413                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 414                         return;
 415                 }
 416                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 417
 418                 $sk = $wgUser->getSkin();
 419                 while ( $s = $dbr->fetchObject( $res ) ) {
 420                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 421                         $link = $sk->makeKnownLinkObj( $name, "" );
 422                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 423                 }
 424                 $wgOut->addHTML( "</ul>\n" );
 425         }
 426
 427         function delete()
 428         {
 429                 global $wgUser, $wgOut, $wgRequest;
 430
 431                 $confirm = $wgRequest->wasPosted();
 432                 $image = $wgRequest->getVal( 'image' );
 433                 $oldimage = $wgRequest->getVal( 'oldimage' );
 434
 435                 # Only sysops can delete images. Previously ordinary users could delete
 436                 # old revisions, but this is no longer the case.
 437                 if ( !$wgUser->isAllowed('delete') ) {
 438                         $wgOut->sysopRequired();
 439                         return;
 440                 }
 441                 if ( $wgUser->isBlocked() ) {
 442                         return $this->blockedIPpage();
 443                 }
 444                 if ( wfReadOnly() ) {
 445                         $wgOut->readOnlyPage();
 446                         return;
 447                 }
 448
 449                 # Better double-check that it hasn't been deleted yet!
 450                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 451                 if ( ( !is_null( $image ) )
 452                   && ( '' == trim( $image ) ) ) {
 453                         $wgOut->fatalError( wfMsg( 'cannotdelete' ) );
 454                         return;
 455                 }
 456
 457                 $this->img  = new Image( $this->mTitle );
 458
 459                 # Deleting old images doesn't require confirmation
 460                 if ( !is_null( $oldimage ) || $confirm ) {
 461                         if( $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 462                                 $this->doDelete();
 463                         } else {
 464                                 $wgOut->fatalError( wfMsg( 'sessionfailure' ) );
 465                         }
 466                         return;
 467                 }
 468
 469                 if ( !is_null( $image ) ) {
 470                         $q = '&image=' . urlencode( $image );
 471                 } else if ( !is_null( $oldimage ) ) {
 472                         $q = '&oldimage=' . urlencode( $oldimage );
 473                 } else {
 474                         $q = '';
 475                 }
 476                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 477         }
 478
 479         function doDelete()     {
 480                 global $wgOut, $wgRequest, $wgUseSquid;
 481                 global $wgPostCommitUpdateList;
 482
 483                 $fname = 'ImagePage::doDelete';
 484
 485                 $reason = $wgRequest->getVal( 'wpReason' );
 486                 $oldimage = $wgRequest->getVal( 'oldimage' );
 487
 488                 $dbw =& wfGetDB( DB_MASTER );
 489
 490                 if ( !is_null( $oldimage ) ) {
 491                         if ( strlen( $oldimage ) < 16 ) {
 492                                 $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 493                                 return;
 494                         }
 495                         if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 496                                 $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 497                                 return;
 498                         }
 499
 500                         # Invalidate description page cache
 501                         $this->mTitle->invalidateCache();
 502
 503                         # Squid purging
 504                         if ( $wgUseSquid ) {
 505                                 $urlArr = array(
 506                                         wfImageArchiveUrl( $oldimage ),
 507                                         $this->mTitle->getInternalURL()
 508                                 );
 509                                 wfPurgeSquidServers($urlArr);
 510                         }
 511                         $this->doDeleteOldImage( $oldimage );
 512                         $dbw->delete( 'oldimage', array( 'oi_archive_name' => $oldimage ) );
 513                         $deleted = $oldimage;
 514                 } else {
 515                         $image = $this->mTitle->getDBkey();
 516                         $dest = wfImageDir( $image );
 517                         $archive = wfImageDir( $image );
 518
 519                         # Delete the image file if it exists; due to sync problems
 520                         # or manual trimming sometimes the file will be missing.
 521                         $targetFile = "{$dest}/{$image}";
 522                         if( file_exists( $targetFile ) && ! @unlink( $targetFile ) ) {
 523                                 # If the deletion operation actually failed, bug out:
 524                                 $wgOut->fileDeleteError( $targetFile );
 525                                 return;
 526                         }
 527                         $dbw->delete( 'image', array( 'img_name' => $image ) );
 528
 529                         if ( $dbw->affectedRows() ) {
 530                                 # Update site_stats
 531                                 $site_stats = $dbw->tableName( 'site_stats' );
 532                                 $dbw->query( "UPDATE $site_stats SET ss_images=ss_images-1", $fname );
 533                         }
 534
 535
 536                         $res = $dbw->select( 'oldimage', array( 'oi_archive_name' ), array( 'oi_name' => $image ) );
 537
 538                         # Purge archive URLs from the squid
 539                         $urlArr = Array();
 540                         while ( $s = $dbw->fetchObject( $res ) ) {
 541                                 $this->doDeleteOldImage( $s->oi_archive_name );
 542                                 $urlArr[] = wfImageArchiveUrl( $s->oi_archive_name );
 543                         }
 544
 545                         # And also the HTML of all pages using this image
 546                         $linksTo = $this->img->getLinksTo();
 547                         if ( $wgUseSquid ) {
 548                                 $u = SquidUpdate::newFromTitles( $linksTo, $urlArr );
 549                                 array_push( $wgPostCommitUpdateList, $u );
 550                         }
 551
 552                         $dbw->delete( 'oldimage', array( 'oi_name' => $image ) );
 553
 554                         # Image itself is now gone, and database is cleaned.
 555                         # Now we remove the image description page.
 556
 557                         $article = new Article( $this->mTitle );
 558                         $article->doDeleteArticle( $reason ); # ignore errors
 559
 560                         # Invalidate parser cache and client cache for pages using this image
 561                         # This is left until relatively late to reduce lock time
 562                         Title::touchArray( $linksTo );
 563
 564                         /* Delete thumbnails and refresh image metadata cache */
 565                         $this->img->purgeCache();
 566
 567                         $deleted = $image;
 568                 }
 569
 570                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 571                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 572
 573                 $loglink = '[[Special:Log/delete|' . wfMsg( 'deletionlog' ) . ']]';
 574                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 575
 576                 $wgOut->addWikiText( $text );
 577
 578                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 579         }
 580
 581         function doDeleteOldImage( $oldimage )
 582         {
 583                 global $wgOut;
 584
 585                 $name = substr( $oldimage, 15 );
 586                 $archive = wfImageArchiveDir( $name );
 587
 588                 # Delete the image if it exists. Sometimes the file will be missing
 589                 # due to manual intervention or weird sync problems; treat that
 590                 # condition gracefully and continue to delete the database entry.
 591                 # Also some records may end up with an empty oi_archive_name field
 592                 # if the original file was missing when a new upload was made;
 593                 # don't try to delete the directory then!
 594                 #
 595                 $targetFile = "{$archive}/{$oldimage}";
 596                 if( $oldimage != '' && file_exists( $targetFile ) && !@unlink( $targetFile ) ) {
 597                         # If we actually have a file and can't delete it, throw an error.
 598                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 599                 } else {
 600                         # Log the deletion
 601                         $log = new LogPage( 'delete' );
 602                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 603                 }
 604         }
 605
 606         function revert() {
 607                 global $wgOut, $wgRequest, $wgUser;
 608
 609                 $oldimage = $wgRequest->getText( 'oldimage' );
 610                 if ( strlen( $oldimage ) < 16 ) {
 611                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 612                         return;
 613                 }
 614                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 615                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 616                         return;
 617                 }
 618
 619                 if ( wfReadOnly() ) {
 620                         $wgOut->readOnlyPage();
 621                         return;
 622                 }
 623                 if( $wgUser->isAnon() ) {
 624                         $wgOut->errorpage( 'uploadnologin', 'uploadnologintext' );
 625                         return;
 626                 }
 627                 if ( ! $this->mTitle->userCanEdit() ) {
 628                         $wgOut->sysopRequired();
 629                         return;
 630                 }
 631                 if ( $wgUser->isBlocked() ) {
 632                         return $this->blockedIPpage();
 633                 }
 634                 if( !$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 635                         $wgOut->errorpage( 'internalerror', 'sessionfailure' );
 636                         return;
 637                 }
 638                 $name = substr( $oldimage, 15 );
 639
 640                 $dest = wfImageDir( $name );
 641                 $archive = wfImageArchiveDir( $name );
 642                 $curfile = "{$dest}/{$name}";
 643
 644                 if ( ! is_file( $curfile ) ) {
 645                         $wgOut->fileNotFoundError( htmlspecialchars( $curfile ) );
 646                         return;
 647                 }
 648                 $oldver = wfTimestampNow() . "!{$name}";
 649
 650                 $dbr =& wfGetDB( DB_SLAVE );
 651                 $size = $dbr->selectField( 'oldimage', 'oi_size', array( 'oi_archive_name' => $oldimage )  );
 652
 653                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 654                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 655                         return;
 656                 }
 657                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 658                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 659                 }
 660
 661                 # Record upload and update metadata cache
 662                 $img = Image::newFromName( $name );
 663                 $img->recordUpload( $oldver, wfMsg( "reverted" ) );
 664
 665                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 666                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 667                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 668
 669                 $descTitle = $img->getTitle();
 670                 $wgOut->returnToMain( false, $descTitle->getPrefixedText() );
 671         }
 672
 673         function blockedIPpage() {
 674                 $edit = new EditPage( $this );
 675                 return $edit->blockedIPpage();
 676         }
 677
 678         /**
 679          * Override handling of action=purge
 680          */
 681         function doPurge() {
 682                 $this->img = new Image( $this->mTitle );
 683                 if( $this->img->exists() ) {
 684                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 685                         $linksTo = $this->img->getLinksTo();
 686                         Title::touchArray( $linksTo );
 687                         $this->img->purgeCache();
 688                 } else {
 689                         wfDebug( "ImagePage::doPurge no image\n" );
 690                 }
 691                 parent::doPurge();
 692         }
 693
 694 }
 695
 696 /**
 697  * @todo document
 698  * @package MediaWiki
 699  */
 700 class ImageHistoryList {
 701         function ImageHistoryList( &$skin ) {
 702                 $this->skin =& $skin;
 703         }
 704
 705         function beginImageHistoryList() {
 706                 $s = "\n<h2 id=\"filehistory\">" . wfMsg( 'imghistory' ) . "</h2>\n" .
 707                   "<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 708                 return $s;
 709         }
 710
 711         function endImageHistoryList() {
 712                 $s = "</ul>\n";
 713                 return $s;
 714         }
 715
 716         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description, $width, $height ) {
 717                 global $wgUser, $wgLang, $wgTitle, $wgContLang;
 718
 719                 $datetime = $wgLang->timeanddate( $timestamp, true );
 720                 $del = wfMsg( 'deleteimg' );
 721                 $delall = wfMsg( 'deleteimgcompletely' );
 722                 $cur = wfMsg( 'cur' );
 723
 724                 if ( $iscur ) {
 725                         $url = Image::imageUrl( $img );
 726                         $rlink = $cur;
 727                         if ( $wgUser->isAllowed('delete') ) {
 728                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 729                                   '&action=delete' );
 730                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 731
 732                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 733                         } else {
 734                                 $dlink = $del;
 735                         }
 736                 } else {
 737                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 738                         if( $wgUser->getID() != 0 && $wgTitle->userCanEdit() ) {
 739                                 $token = urlencode( $wgUser->editToken( $img ) );
 740                                 $rlink = $this->skin->makeKnownLinkObj( $wgTitle,
 741                                            wfMsg( 'revertimg' ), 'action=revert&oldimage=' .
 742                                            urlencode( $img ) . "&wpEditToken=$token" );
 743                                 $dlink = $this->skin->makeKnownLinkObj( $wgTitle,
 744                                            $del, 'action=delete&oldimage=' . urlencode( $img ) .
 745                                            "&wpEditToken=$token" );
 746                         } else {
 747                                 # Having live active links for non-logged in users
 748                                 # means that bots and spiders crawling our site can
 749                                 # inadvertently change content. Baaaad idea.
 750                                 $rlink = wfMsg( 'revertimg' );
 751                                 $dlink = $del;
 752                         }
 753                 }
 754                 if ( 0 == $user ) {
 755                         $userlink = $usertext;
 756                 } else {
 757                         $userlink = $this->skin->makeLinkObj( Title::makeTitle( NS_USER, $usertext ), $usertext );
 758                         $usertalk = $this->skin->makeLinkObj( Title::makeTitle( NS_USER_TALK, $usertext), $wgContLang->getNsText( NS_TALK ) );
 759                         $userdata = $userlink . ' (' . $usertalk . ')';
 760                 }
 761                 $nbytes = wfMsgExt( 'nbytes', array( 'parsemag', 'escape' ),
 762                         $wgLang->formatNum( $size ) );
 763                 $widthheight = wfMsg( 'widthheight', $width, $height );
 764                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 765
 766                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a> . . {$userdata} . . {$widthheight} ({$nbytes})";
 767
 768                 $s .= $this->skin->commentBlock( $description, $wgTitle );
 769                 $s .= "</li>\n";
 770                 return $s;
 771         }
 772
 773 }
 774
 775
 776 ?>