includes/ImagePage.php

   1 <?php
   2 /**
   3  */
   4
   5 /**
   6  *
   7  */
   8 if( !defined( 'MEDIAWIKI' ) )
   9         die( 1 );
  10
  11 /**
  12  * Special handling for image description pages
  13  */
  14 class ImagePage extends Article {
  15
  16         /* private */ var $img;  // Image object this page is shown for
  17         var $mExtraDescription = false;
  18
  19         /**
  20          * Handler for action=render
  21          * Include body text only; none of the image extras
  22          */
  23         function render() {
  24                 global $wgOut;
  25                 $wgOut->setArticleBodyOnly( true );
  26                 $wgOut->addSecondaryWikitext( $this->getContent() );
  27         }
  28
  29         function view() {
  30                 global $wgOut, $wgShowEXIF, $wgRequest, $wgUser;
  31
  32                 $this->img = new Image( $this->mTitle );
  33
  34                 $diff = $wgRequest->getVal( 'diff' );
  35                 $diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
  36
  37                 if ( $this->mTitle->getNamespace() != NS_IMAGE || ( isset( $diff ) && $diffOnly ) )
  38                         return Article::view();
  39
  40                 if ($wgShowEXIF && $this->img->exists()) {
  41                         $exif = $this->img->getExifData();
  42                         $showmeta = count($exif) ? true : false;
  43                 } else {
  44                         $exif = false;
  45                         $showmeta = false;
  46                 }
  47
  48                 if ($this->img->exists())
  49                         $wgOut->addHTML($this->showTOC($showmeta));
  50
  51                 $this->openShowImage();
  52
  53                 # No need to display noarticletext, we use our own message, output in openShowImage()
  54                 if ( $this->getID() ) {
  55                         Article::view();
  56                 } else {
  57                         # Just need to set the right headers
  58                         $wgOut->setArticleFlag( true );
  59                         $wgOut->setRobotpolicy( 'index,follow' );
  60                         $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  61                         $this->viewUpdates();
  62                 }
  63
  64                 # Show shared description, if needed
  65                 if ( $this->mExtraDescription ) {
  66                         $fol = wfMsg( 'shareddescriptionfollows' );
  67                         if( $fol != '-' ) {
  68                                 $wgOut->addWikiText( $fol );
  69                         }
  70                         $wgOut->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . '</div>' );
  71                 }
  72
  73                 $this->closeShowImage();
  74                 $this->imageHistory();
  75                 $this->imageLinks();
  76
  77                 if ( $exif ) {
  78                         global $wgStylePath, $wgStyleVersion;
  79                         $expand = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-expand' ) ) );
  80                         $collapse = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-collapse' ) ) );
  81                         $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'metadata' ), wfMsg( 'metadata' ) ). "\n" );
  82                         $wgOut->addWikiText( $this->makeMetadataTable( $exif ) );
  83                         $wgOut->addHTML(
  84                                 "<script type=\"text/javascript\" src=\"$wgStylePath/common/metadata.js?$wgStyleVersion\"></script>\n" .
  85                                 "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
  86                 }
  87         }
  88
  89         /**
  90          * Create the TOC
  91          *
  92          * @access private
  93          *
  94          * @param bool $metadata Whether or not to show the metadata link
  95          * @return string
  96          */
  97         function showTOC( $metadata ) {
  98                 global $wgLang;
  99                 $r = '<ul id="filetoc">
 100                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>
 101                         <li><a href="#filehistory">' . wfMsgHtml( 'imghistory' ) . '</a></li>
 102                         <li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>' .
 103                         ($metadata ? '<li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>' : '') . '
 104                 </ul>';
 105                 return $r;
 106         }
 107
 108         /**
 109          * Make a table with metadata to be shown in the output page.
 110          *
 111          * @access private
 112          *
 113          * @param array $exif The array containing the EXIF data
 114          * @return string
 115          */
 116         function makeMetadataTable( $exif ) {
 117                 $r = wfMsg( 'metadata-help' ) . "\n\n";
 118                 $r .= "{| id=mw_metadata class=mw_metadata\n";
 119                 $visibleFields = $this->visibleMetadataFields();
 120                 foreach( $exif as $k => $v ) {
 121                         $tag = strtolower( $k );
 122                         $msg = wfMsg( "exif-$tag" );
 123                         $class = "exif-$tag";
 124                         if( !in_array( $tag, $visibleFields ) ) {
 125                                 $class .= ' collapsable';
 126                         }
 127                         $r .= "|- class=\"$class\"\n";
 128                         $r .= "!| $msg\n";
 129                         $r .= "|| $v\n";
 130                 }
 131                 $r .= '|}';
 132                 return $r;
 133         }
 134
 135         /**
 136          * Get a list of EXIF metadata items which should be displayed when
 137          * the metadata table is collapsed.
 138          *
 139          * @return array of strings
 140          * @access private
 141          */
 142         function visibleMetadataFields() {
 143                 $fields = array();
 144                 $lines = explode( "\n", wfMsgForContent( 'metadata-fields' ) );
 145                 foreach( $lines as $line ) {
 146                         $matches = array();
 147                         if( preg_match( '/^\\*\s*(.*?)\s*$/', $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, $wgLang;
 169                 global $wgUseImageResize, $wgGenerateThumbnailOnParse;
 170
 171                 $full_url  = $this->img->getURL();
 172                 $anchoropen = '';
 173                 $anchorclose = '';
 174                 $sizeSel = intval( $wgUser->getOption( 'imagesize') );
 175
 176                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 177                         $sizeSel = User::getDefaultOption( 'imagesize' );
 178                 }
 179                 $max = $wgImageLimits[$sizeSel];
 180                 $maxWidth = $max[0];
 181                 $maxHeight = $max[1];
 182                 $sk = $wgUser->getSkin();
 183
 184                 if ( $this->img->exists() ) {
 185                         # image
 186                         $page = $wgRequest->getIntOrNull( 'page' );
 187                         if ( ! is_null( $page ) ) {
 188                                 $this->img->selectPage( $page );
 189                         } else {
 190                                 $page = 1;
 191                         }
 192                         $width = $this->img->getWidth();
 193                         $height = $this->img->getHeight();
 194                         $showLink = false;
 195
 196                         if ( $this->img->allowInlineDisplay() and $width and $height) {
 197                                 # image
 198
 199                                 # "Download high res version" link below the image
 200                                 $msg = wfMsgHtml('showbigimage', $width, $height, intval( $this->img->getSize()/1024 ) );
 201
 202                                 # We'll show a thumbnail of this image
 203                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 204                                         # Calculate the thumbnail size.
 205                                         # First case, the limiting factor is the width, not the height.
 206                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 207                                                 $height = round( $height * $maxWidth / $width);
 208                                                 $width = $maxWidth;
 209                                                 # Note that $height <= $maxHeight now.
 210                                         } else {
 211                                                 $newwidth = floor( $width * $maxHeight / $height);
 212                                                 $height = round( $height * $newwidth / $width );
 213                                                 $width = $newwidth;
 214                                                 # Note that $height <= $maxHeight now, but might not be identical
 215                                                 # because of rounding.
 216                                         }
 217
 218                                         if( $wgUseImageResize ) {
 219                                                 $thumbnail = $this->img->getThumbnail( $width, -1, $wgGenerateThumbnailOnParse );
 220                                                 if ( $thumbnail == null ) {
 221                                                         $url = $this->img->getViewURL();
 222                                                 } else {
 223                                                         $url = $thumbnail->getURL();
 224                                                 }
 225                                         } else {
 226                                                 # No resize ability? Show the full image, but scale
 227                                                 # it down in the browser so it fits on the page.
 228                                                 $url = $this->img->getViewURL();
 229                                         }
 230                                         $anchoropen  = "<a href=\"{$full_url}\">";
 231                                         $anchorclose = "</a><br />";
 232                                         if( $this->img->mustRender() ) {
 233                                                 $showLink = true;
 234                                         } else {
 235                                                 $anchorclose .= "\n$anchoropen{$msg}</a>";
 236                                         }
 237                                 } else {
 238                                         $url = $this->img->getViewURL();
 239                                         $showLink = true;
 240                                 }
 241
 242                                 if ( $this->img->isMultipage() ) {
 243                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 244                                 }
 245
 246                                 $wgOut->addHTML( '<div class="fullImageLink" id="file">' . $anchoropen .
 247                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
 248                                      htmlspecialchars( $this->img->getTitle()->getPrefixedText() ).'" />' . $anchorclose . '</div>' );
 249
 250                                 if ( $this->img->isMultipage() ) {
 251                                         $count = $this->img->pageCount();
 252
 253                                         if ( $page > 1 ) {
 254                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 255                                                 $link = $sk->makeLinkObj( $this->mTitle, $label, 'page='. ($page-1) );
 256                                                 $this->img->selectPage( $page - 1 );
 257                                                 $thumb1 = $sk->makeThumbLinkObj( $this->img, $link, $label, 'none' );
 258                                         } else {
 259                                                 $thumb1 = '';
 260                                         }
 261
 262                                         if ( $page < $count ) {
 263                                                 $label = wfMsg( 'imgmultipagenext' );
 264                                                 $this->img->selectPage( $page + 1 );
 265                                                 $link = $sk->makeLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 266                                                 $thumb2 = $sk->makeThumbLinkObj( $this->img, $link, $label, 'none' );
 267                                         } else {
 268                                                 $thumb2 = '';
 269                                         }
 270
 271                                         $select = '<form name="pageselector" action="' . $this->img->getEscapeLocalUrl( '' ) . '" method="GET" onchange="document.pageselector.submit();">' ;
 272                                         $select .= $wgOut->parse( wfMsg( 'imgmultigotopre' ), false ) .
 273                                                 ' <select id="pageselector" name="page">';
 274                                         for ( $i=1; $i <= $count; $i++ ) {
 275                                                 $select .= Xml::option( $wgLang->formatNum( $i ), $i,
 276                                                         $i == $page );
 277                                         }
 278                                         $select .= '</select>' . $wgOut->parse( wfMsg( 'imgmultigotopost' ), false ) .
 279                                                 '<input type="submit" value="' .
 280                                                 htmlspecialchars( wfMsg( 'imgmultigo' ) ) . '"></form>';
 281
 282                                         $wgOut->addHTML( '</td><td><div class="multipageimagenavbox">' .
 283                                            "$select<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>" );
 284                                 }
 285                         } else {
 286                                 #if direct link is allowed but it's not a renderable image, show an icon.
 287                                 if ($this->img->isSafeFile()) {
 288                                         $icon= $this->img->iconThumb();
 289
 290                                         $wgOut->addHTML( '<div class="fullImageLink" id="file"><a href="' . $full_url . '">' .
 291                                         $icon->toHtml() .
 292                                         '</a></div>' );
 293                                 }
 294
 295                                 $showLink = true;
 296                         }
 297
 298
 299                         if ($showLink) {
 300                                 $filename = wfEscapeWikiText( $this->img->getName() );
 301                                 // Hacky workaround: for some reason we use the incorrect MIME type
 302                                 // image/svg for SVG.  This should be fixed internally, but at least
 303                                 // make the displayed type right.
 304                                 $mime = $this->img->getMimeType();
 305                                 if ($mime == 'image/svg') $mime = 'image/svg+xml';
 306
 307                                 $info = wfMsg( 'fileinfo',
 308                                         ceil($this->img->getSize()/1024.0),
 309                                         $mime );
 310
 311                                 global $wgContLang;
 312                                 $dirmark = $wgContLang->getDirMark();
 313                                 if (!$this->img->isSafeFile()) {
 314                                         $warning = wfMsg( 'mediawarning' );
 315                                         $wgOut->addWikiText( <<<END
 316 <div class="fullMedia">
 317 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 318 <span class="fileInfo"> ($info)</span>
 319 </div>
 320
 321 <div class="mediaWarning">$warning</div>
 322 END
 323                                                 );
 324                                 } else {
 325                                         $wgOut->addWikiText( <<<END
 326 <div class="fullMedia">
 327 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> ($info)</span>
 328 </div>
 329 END
 330                                                 );
 331                                 }
 332                         }
 333
 334                         if($this->img->fromSharedDirectory) {
 335                                 $this->printSharedImageText();
 336                         }
 337                 } else {
 338                         # Image does not exist
 339
 340                         $title = SpecialPage::getTitleFor( 'Upload' );
 341                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 342                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 343                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 344                 }
 345         }
 346
 347         function printSharedImageText() {
 348                 global $wgRepositoryBaseUrl, $wgFetchCommonsDescriptions, $wgOut, $wgUser;
 349
 350                 $url = $wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey());
 351                 $sharedtext = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml("sharedupload");
 352                 if ($wgRepositoryBaseUrl && !$wgFetchCommonsDescriptions) {
 353
 354                         $sk = $wgUser->getSkin();
 355                         $title = SpecialPage::getTitleFor( 'Upload' );
 356                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('shareduploadwiki-linktext'),
 357                         array( 'wpDestFile' => urlencode( $this->img->getName() )));
 358                         $sharedtext .= " " . wfMsgWikiHtml('shareduploadwiki', $link);
 359                 }
 360                 $sharedtext .= "</div>";
 361                 $wgOut->addHTML($sharedtext);
 362
 363                 if ($wgRepositoryBaseUrl && $wgFetchCommonsDescriptions) {
 364                         $text = Http::get($url . '?action=render');
 365                         if ($text)
 366                                 $this->mExtraDescription = $text;
 367                 }
 368         }
 369
 370         function getUploadUrl() {
 371                 global $wgServer;
 372                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 373                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 374         }
 375
 376         /**
 377          * Print out the various links at the bottom of the image page, e.g. reupload,
 378          * external editing (and instructions link) etc.
 379          */
 380         function uploadLinksBox() {
 381                 global $wgUser, $wgOut;
 382
 383                 if( $this->img->fromSharedDirectory )
 384                         return;
 385
 386                 $sk = $wgUser->getSkin();
 387
 388                 $wgOut->addHtml( '<br /><ul>' );
 389
 390                 # "Upload a new version of this file" link
 391                 if( $wgUser->isAllowed( 'reupload' ) ) {
 392                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 393                         $wgOut->addHtml( "<li><div>{$ulink}</div></li>" );
 394                 }
 395
 396                 # External editing link
 397                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 398                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 399
 400                 $wgOut->addHtml( '</ul>' );
 401         }
 402
 403         function closeShowImage()
 404         {
 405                 # For overloading
 406
 407         }
 408
 409         /**
 410          * If the page we've just displayed is in the "Image" namespace,
 411          * we follow it with an upload history of the image and its usage.
 412          */
 413         function imageHistory()
 414         {
 415                 global $wgUser, $wgOut, $wgUseExternalEditor;
 416
 417                 $sk = $wgUser->getSkin();
 418
 419                 $line = $this->img->nextHistoryLine();
 420
 421                 if ( $line ) {
 422                         $list = new ImageHistoryList( $sk );
 423                         $s = $list->beginImageHistoryList() .
 424                                 $list->imageHistoryLine( true, wfTimestamp(TS_MW, $line->img_timestamp),
 425                                         $this->mTitle->getDBkey(),  $line->img_user,
 426                                         $line->img_user_text, $line->img_size, $line->img_description,
 427                                         $line->img_width, $line->img_height
 428                                 );
 429
 430                         while ( $line = $this->img->nextHistoryLine() ) {
 431                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 432                                         $line->oi_archive_name, $line->img_user,
 433                                         $line->img_user_text, $line->img_size, $line->img_description,
 434                                         $line->img_width, $line->img_height
 435                                 );
 436                         }
 437                         $s .= $list->endImageHistoryList();
 438                 } else { $s=''; }
 439                 $wgOut->addHTML( $s );
 440
 441                 # Exist check because we don't want to show this on pages where an image
 442                 # doesn't exist along with the noimage message, that would suck. -ævar
 443                 if( $wgUseExternalEditor && $this->img->exists() ) {
 444                         $this->uploadLinksBox();
 445                 }
 446
 447         }
 448
 449         function imageLinks()
 450         {
 451                 global $wgUser, $wgOut;
 452
 453                 $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'filelinks' ), wfMsg( 'imagelinks' ) ) . "\n" );
 454
 455                 $dbr =& wfGetDB( DB_SLAVE );
 456                 $page = $dbr->tableName( 'page' );
 457                 $imagelinks = $dbr->tableName( 'imagelinks' );
 458
 459                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 460                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 461                 $sql = $dbr->limitResult($sql, 500, 0);
 462                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 463
 464                 if ( 0 == $dbr->numRows( $res ) ) {
 465                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 466                         return;
 467                 }
 468                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 469
 470                 $sk = $wgUser->getSkin();
 471                 while ( $s = $dbr->fetchObject( $res ) ) {
 472                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 473                         $link = $sk->makeKnownLinkObj( $name, "" );
 474                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 475                 }
 476                 $wgOut->addHTML( "</ul>\n" );
 477         }
 478
 479         function delete()
 480         {
 481                 global $wgUser, $wgOut, $wgRequest;
 482
 483                 $confirm = $wgRequest->wasPosted();
 484                 $reason = $wgRequest->getVal( 'wpReason' );
 485                 $image = $wgRequest->getVal( 'image' );
 486                 $oldimage = $wgRequest->getVal( 'oldimage' );
 487
 488                 # Only sysops can delete images. Previously ordinary users could delete
 489                 # old revisions, but this is no longer the case.
 490                 if ( !$wgUser->isAllowed('delete') ) {
 491                         $wgOut->permissionRequired( 'delete' );
 492                         return;
 493                 }
 494                 if ( $wgUser->isBlocked() ) {
 495                         return $this->blockedIPpage();
 496                 }
 497                 if ( wfReadOnly() ) {
 498                         $wgOut->readOnlyPage();
 499                         return;
 500                 }
 501
 502                 # Better double-check that it hasn't been deleted yet!
 503                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 504                 if ( ( !is_null( $image ) )
 505                   && ( '' == trim( $image ) ) ) {
 506                         $wgOut->showFatalError( wfMsg( 'cannotdelete' ) );
 507                         return;
 508                 }
 509
 510                 $this->img  = new Image( $this->mTitle );
 511
 512                 # Deleting old images doesn't require confirmation
 513                 if ( !is_null( $oldimage ) || $confirm ) {
 514                         if( $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 515                                 $this->doDelete( $reason );
 516                         } else {
 517                                 $wgOut->showFatalError( wfMsg( 'sessionfailure' ) );
 518                         }
 519                         return;
 520                 }
 521
 522                 if ( !is_null( $image ) ) {
 523                         $q = '&image=' . urlencode( $image );
 524                 } else if ( !is_null( $oldimage ) ) {
 525                         $q = '&oldimage=' . urlencode( $oldimage );
 526                 } else {
 527                         $q = '';
 528                 }
 529                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 530         }
 531
 532         /*
 533          * Delete an image.
 534          * @param $reason User provided reason for deletion.
 535          */
 536         function doDelete( $reason ) {
 537                 global $wgOut, $wgRequest;
 538
 539                 $oldimage = $wgRequest->getVal( 'oldimage' );
 540
 541                 if ( !is_null( $oldimage ) ) {
 542                         if ( strlen( $oldimage ) < 16 ) {
 543                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 544                                 return;
 545                         }
 546                         if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 547                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 548                                 return;
 549                         }
 550                         if ( !$this->doDeleteOldImage( $oldimage ) ) {
 551                                 return;
 552                         }
 553                         $deleted = $oldimage;
 554                 } else {
 555                         $ok = $this->img->delete( $reason );
 556                         if( !$ok ) {
 557                                 # If the deletion operation actually failed, bug out:
 558                                 $wgOut->showFileDeleteError( $this->img->getName() );
 559                                 return;
 560                         }
 561
 562                         # Image itself is now gone, and database is cleaned.
 563                         # Now we remove the image description page.
 564
 565                         $article = new Article( $this->mTitle );
 566                         $article->doDeleteArticle( $reason ); # ignore errors
 567
 568                         $deleted = $this->img->getName();
 569                 }
 570
 571                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 572                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 573
 574                 $loglink = '[[Special:Log/delete|' . wfMsg( 'deletionlog' ) . ']]';
 575                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 576
 577                 $wgOut->addWikiText( $text );
 578
 579                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 580         }
 581
 582         /**
 583          * @return success
 584          */
 585         function doDeleteOldImage( $oldimage )
 586         {
 587                 global $wgOut;
 588
 589                 $ok = $this->img->deleteOld( $oldimage, '' );
 590                 if( !$ok ) {
 591                         # If we actually have a file and can't delete it, throw an error.
 592                         # Something went awry...
 593                         $wgOut->showFileDeleteError( "$oldimage" );
 594                 } else {
 595                         # Log the deletion
 596                         $log = new LogPage( 'delete' );
 597                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 598                 }
 599                 return $ok;
 600         }
 601
 602         function revert() {
 603                 global $wgOut, $wgRequest, $wgUser;
 604
 605                 $oldimage = $wgRequest->getText( 'oldimage' );
 606                 if ( strlen( $oldimage ) < 16 ) {
 607                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 608                         return;
 609                 }
 610                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 611                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 612                         return;
 613                 }
 614
 615                 if ( wfReadOnly() ) {
 616                         $wgOut->readOnlyPage();
 617                         return;
 618                 }
 619                 if( $wgUser->isAnon() ) {
 620                         $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 621                         return;
 622                 }
 623                 if ( ! $this->mTitle->userCan( 'edit' ) ) {
 624                         $wgOut->readOnlyPage( $this->getContent(), true );
 625                         return;
 626                 }
 627                 if ( $wgUser->isBlocked() ) {
 628                         return $this->blockedIPpage();
 629                 }
 630                 if( !$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 631                         $wgOut->showErrorPage( 'internalerror', 'sessionfailure' );
 632                         return;
 633                 }
 634                 $name = substr( $oldimage, 15 );
 635
 636                 $dest = wfImageDir( $name );
 637                 $archive = wfImageArchiveDir( $name );
 638                 $curfile = "{$dest}/{$name}";
 639
 640                 if ( !is_dir( $dest ) ) wfMkdirParents( $dest );
 641                 if ( !is_dir( $archive ) ) wfMkdirParents( $archive );
 642
 643                 if ( ! is_file( $curfile ) ) {
 644                         $wgOut->showFileNotFoundError( htmlspecialchars( $curfile ) );
 645                         return;
 646                 }
 647                 $oldver = wfTimestampNow() . "!{$name}";
 648
 649                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 650                         $wgOut->showFileRenameError( $curfile, "${archive}/{$oldver}" );
 651                         return;
 652                 }
 653                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 654                         $wgOut->showFileCopyError( "${archive}/{$oldimage}", $curfile );
 655                         return;
 656                 }
 657
 658                 # Record upload and update metadata cache
 659                 $img = Image::newFromName( $name );
 660                 $img->recordUpload( $oldver, wfMsg( "reverted" ) );
 661
 662                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 663                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 664                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 665
 666                 $descTitle = $img->getTitle();
 667                 $wgOut->returnToMain( false, $descTitle->getPrefixedText() );
 668         }
 669
 670         function blockedIPpage() {
 671                 $edit = new EditPage( $this );
 672                 return $edit->blockedIPpage();
 673         }
 674
 675         /**
 676          * Override handling of action=purge
 677          */
 678         function doPurge() {
 679                 $this->img = new Image( $this->mTitle );
 680                 if( $this->img->exists() ) {
 681                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 682                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 683                         $update->doUpdate();
 684                         $this->img->purgeCache();
 685                 } else {
 686                         wfDebug( "ImagePage::doPurge no image\n" );
 687                 }
 688                 parent::doPurge();
 689         }
 690
 691 }
 692
 693 /**
 694  * @todo document
 695  */
 696 class ImageHistoryList {
 697         function ImageHistoryList( &$skin ) {
 698                 $this->skin =& $skin;
 699         }
 700
 701         function beginImageHistoryList() {
 702                 $s = "\n" .
 703                         Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'imghistory' ) ) .
 704                         "\n<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 705                 return $s;
 706         }
 707
 708         function endImageHistoryList() {
 709                 $s = "</ul>\n";
 710                 return $s;
 711         }
 712
 713         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description, $width, $height ) {
 714                 global $wgUser, $wgLang, $wgTitle, $wgContLang;
 715
 716                 $datetime = $wgLang->timeanddate( $timestamp, true );
 717                 $del = wfMsgHtml( 'deleteimg' );
 718                 $delall = wfMsgHtml( 'deleteimgcompletely' );
 719                 $cur = wfMsgHtml( 'cur' );
 720
 721                 if ( $iscur ) {
 722                         $url = Image::imageUrl( $img );
 723                         $rlink = $cur;
 724                         if ( $wgUser->isAllowed('delete') ) {
 725                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 726                                   '&action=delete' );
 727                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 728
 729                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 730                         } else {
 731                                 $dlink = $del;
 732                         }
 733                 } else {
 734                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 735                         if( $wgUser->getID() != 0 && $wgTitle->userCan( 'edit' ) ) {
 736                                 $token = urlencode( $wgUser->editToken( $img ) );
 737                                 $rlink = $this->skin->makeKnownLinkObj( $wgTitle,
 738                                            wfMsgHtml( 'revertimg' ), 'action=revert&oldimage=' .
 739                                            urlencode( $img ) . "&wpEditToken=$token" );
 740                                 $dlink = $this->skin->makeKnownLinkObj( $wgTitle,
 741                                            $del, 'action=delete&oldimage=' . urlencode( $img ) .
 742                                            "&wpEditToken=$token" );
 743                         } else {
 744                                 # Having live active links for non-logged in users
 745                                 # means that bots and spiders crawling our site can
 746                                 # inadvertently change content. Baaaad idea.
 747                                 $rlink = wfMsgHtml( 'revertimg' );
 748                                 $dlink = $del;
 749                         }
 750                 }
 751
 752                 $userlink = $this->skin->userLink( $user, $usertext ) . $this->skin->userToolLinks( $user, $usertext );
 753                 $nbytes = wfMsgExt( 'nbytes', array( 'parsemag', 'escape' ),
 754                         $wgLang->formatNum( $size ) );
 755                 $widthheight = wfMsgHtml( 'widthheight', $width, $height );
 756                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 757
 758                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a> . . {$userlink} . . {$widthheight} ({$nbytes})";
 759
 760                 $s .= $this->skin->commentBlock( $description, $wgTitle );
 761                 $s .= "</li>\n";
 762                 return $s;
 763         }
 764
 765 }
 766
 767
 768 ?>