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                                         global $wgScript;
 272                                         $select = '<form name="pageselector" action="' .
 273                                                 htmlspecialchars( $wgScript ) .
 274                                                 '" method="get" onchange="document.pageselector.submit();">' .
 275                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() );
 276                                         $select .= $wgOut->parse( wfMsg( 'imgmultigotopre' ), false ) .
 277                                                 ' <select id="pageselector" name="page">';
 278                                         for ( $i=1; $i <= $count; $i++ ) {
 279                                                 $select .= Xml::option( $wgLang->formatNum( $i ), $i,
 280                                                         $i == $page );
 281                                         }
 282                                         $select .= '</select>' . $wgOut->parse( wfMsg( 'imgmultigotopost' ), false ) .
 283                                                 '<input type="submit" value="' .
 284                                                 htmlspecialchars( wfMsg( 'imgmultigo' ) ) . '"></form>';
 285
 286                                         $wgOut->addHTML( '</td><td><div class="multipageimagenavbox">' .
 287                                            "$select<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>" );
 288                                 }
 289                         } else {
 290                                 #if direct link is allowed but it's not a renderable image, show an icon.
 291                                 if ($this->img->isSafeFile()) {
 292                                         $icon= $this->img->iconThumb();
 293
 294                                         $wgOut->addHTML( '<div class="fullImageLink" id="file"><a href="' . $full_url . '">' .
 295                                         $icon->toHtml() .
 296                                         '</a></div>' );
 297                                 }
 298
 299                                 $showLink = true;
 300                         }
 301
 302
 303                         if ($showLink) {
 304                                 $filename = wfEscapeWikiText( $this->img->getName() );
 305                                 // Hacky workaround: for some reason we use the incorrect MIME type
 306                                 // image/svg for SVG.  This should be fixed internally, but at least
 307                                 // make the displayed type right.
 308                                 $mime = $this->img->getMimeType();
 309                                 if ($mime == 'image/svg') $mime = 'image/svg+xml';
 310
 311                                 $info = wfMsg( 'fileinfo',
 312                                         ceil($this->img->getSize()/1024.0),
 313                                         $mime );
 314
 315                                 global $wgContLang;
 316                                 $dirmark = $wgContLang->getDirMark();
 317                                 if (!$this->img->isSafeFile()) {
 318                                         $warning = wfMsg( 'mediawarning' );
 319                                         $wgOut->addWikiText( <<<END
 320 <div class="fullMedia">
 321 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 322 <span class="fileInfo"> ($info)</span>
 323 </div>
 324
 325 <div class="mediaWarning">$warning</div>
 326 END
 327                                                 );
 328                                 } else {
 329                                         $wgOut->addWikiText( <<<END
 330 <div class="fullMedia">
 331 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> ($info)</span>
 332 </div>
 333 END
 334                                                 );
 335                                 }
 336                         }
 337
 338                         if($this->img->fromSharedDirectory) {
 339                                 $this->printSharedImageText();
 340                         }
 341                 } else {
 342                         # Image does not exist
 343
 344                         $title = SpecialPage::getTitleFor( 'Upload' );
 345                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 346                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 347                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 348                 }
 349         }
 350
 351         function printSharedImageText() {
 352                 global $wgRepositoryBaseUrl, $wgFetchCommonsDescriptions, $wgOut, $wgUser;
 353
 354                 $url = $wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey());
 355                 $sharedtext = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml("sharedupload");
 356                 if ($wgRepositoryBaseUrl && !$wgFetchCommonsDescriptions) {
 357
 358                         $sk = $wgUser->getSkin();
 359                         $title = SpecialPage::getTitleFor( 'Upload' );
 360                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('shareduploadwiki-linktext'),
 361                         array( 'wpDestFile' => urlencode( $this->img->getName() )));
 362                         $sharedtext .= " " . wfMsgWikiHtml('shareduploadwiki', $link);
 363                 }
 364                 $sharedtext .= "</div>";
 365                 $wgOut->addHTML($sharedtext);
 366
 367                 if ($wgRepositoryBaseUrl && $wgFetchCommonsDescriptions) {
 368                         $text = Http::get($url . '?action=render');
 369                         if ($text)
 370                                 $this->mExtraDescription = $text;
 371                 }
 372         }
 373
 374         function getUploadUrl() {
 375                 global $wgServer;
 376                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 377                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 378         }
 379
 380         /**
 381          * Print out the various links at the bottom of the image page, e.g. reupload,
 382          * external editing (and instructions link) etc.
 383          */
 384         function uploadLinksBox() {
 385                 global $wgUser, $wgOut;
 386
 387                 if( $this->img->fromSharedDirectory )
 388                         return;
 389
 390                 $sk = $wgUser->getSkin();
 391
 392                 $wgOut->addHtml( '<br /><ul>' );
 393
 394                 # "Upload a new version of this file" link
 395                 if( $wgUser->isAllowed( 'reupload' ) ) {
 396                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 397                         $wgOut->addHtml( "<li><div>{$ulink}</div></li>" );
 398                 }
 399
 400                 # External editing link
 401                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 402                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 403
 404                 $wgOut->addHtml( '</ul>' );
 405         }
 406
 407         function closeShowImage()
 408         {
 409                 # For overloading
 410
 411         }
 412
 413         /**
 414          * If the page we've just displayed is in the "Image" namespace,
 415          * we follow it with an upload history of the image and its usage.
 416          */
 417         function imageHistory()
 418         {
 419                 global $wgUser, $wgOut, $wgUseExternalEditor;
 420
 421                 $sk = $wgUser->getSkin();
 422
 423                 $line = $this->img->nextHistoryLine();
 424
 425                 if ( $line ) {
 426                         $list = new ImageHistoryList( $sk );
 427                         $s = $list->beginImageHistoryList() .
 428                                 $list->imageHistoryLine( true, wfTimestamp(TS_MW, $line->img_timestamp),
 429                                         $this->mTitle->getDBkey(),  $line->img_user,
 430                                         $line->img_user_text, $line->img_size, $line->img_description,
 431                                         $line->img_width, $line->img_height
 432                                 );
 433
 434                         while ( $line = $this->img->nextHistoryLine() ) {
 435                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 436                                         $line->oi_archive_name, $line->img_user,
 437                                         $line->img_user_text, $line->img_size, $line->img_description,
 438                                         $line->img_width, $line->img_height
 439                                 );
 440                         }
 441                         $s .= $list->endImageHistoryList();
 442                 } else { $s=''; }
 443                 $wgOut->addHTML( $s );
 444
 445                 # Exist check because we don't want to show this on pages where an image
 446                 # doesn't exist along with the noimage message, that would suck. -ævar
 447                 if( $wgUseExternalEditor && $this->img->exists() ) {
 448                         $this->uploadLinksBox();
 449                 }
 450
 451         }
 452
 453         function imageLinks()
 454         {
 455                 global $wgUser, $wgOut;
 456
 457                 $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'filelinks' ), wfMsg( 'imagelinks' ) ) . "\n" );
 458
 459                 $dbr = wfGetDB( DB_SLAVE );
 460                 $page = $dbr->tableName( 'page' );
 461                 $imagelinks = $dbr->tableName( 'imagelinks' );
 462
 463                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 464                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 465                 $sql = $dbr->limitResult($sql, 500, 0);
 466                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 467
 468                 if ( 0 == $dbr->numRows( $res ) ) {
 469                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 470                         return;
 471                 }
 472                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 473
 474                 $sk = $wgUser->getSkin();
 475                 while ( $s = $dbr->fetchObject( $res ) ) {
 476                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 477                         $link = $sk->makeKnownLinkObj( $name, "" );
 478                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 479                 }
 480                 $wgOut->addHTML( "</ul>\n" );
 481         }
 482
 483         function delete()
 484         {
 485                 global $wgUser, $wgOut, $wgRequest;
 486
 487                 $confirm = $wgRequest->wasPosted();
 488                 $reason = $wgRequest->getVal( 'wpReason' );
 489                 $image = $wgRequest->getVal( 'image' );
 490                 $oldimage = $wgRequest->getVal( 'oldimage' );
 491
 492                 # Only sysops can delete images. Previously ordinary users could delete
 493                 # old revisions, but this is no longer the case.
 494                 if ( !$wgUser->isAllowed('delete') ) {
 495                         $wgOut->permissionRequired( 'delete' );
 496                         return;
 497                 }
 498                 if ( $wgUser->isBlocked() ) {
 499                         return $this->blockedIPpage();
 500                 }
 501                 if ( wfReadOnly() ) {
 502                         $wgOut->readOnlyPage();
 503                         return;
 504                 }
 505
 506                 # Better double-check that it hasn't been deleted yet!
 507                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 508                 if ( ( !is_null( $image ) )
 509                   && ( '' == trim( $image ) ) ) {
 510                         $wgOut->showFatalError( wfMsg( 'cannotdelete' ) );
 511                         return;
 512                 }
 513
 514                 $this->img  = new Image( $this->mTitle );
 515
 516                 # Deleting old images doesn't require confirmation
 517                 if ( !is_null( $oldimage ) || $confirm ) {
 518                         if( $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 519                                 $this->doDelete( $reason );
 520                         } else {
 521                                 $wgOut->showFatalError( wfMsg( 'sessionfailure' ) );
 522                         }
 523                         return;
 524                 }
 525
 526                 if ( !is_null( $image ) ) {
 527                         $q = '&image=' . urlencode( $image );
 528                 } else if ( !is_null( $oldimage ) ) {
 529                         $q = '&oldimage=' . urlencode( $oldimage );
 530                 } else {
 531                         $q = '';
 532                 }
 533                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 534         }
 535
 536         /*
 537          * Delete an image.
 538          * @param $reason User provided reason for deletion.
 539          */
 540         function doDelete( $reason ) {
 541                 global $wgOut, $wgRequest;
 542
 543                 $oldimage = $wgRequest->getVal( 'oldimage' );
 544
 545                 if ( !is_null( $oldimage ) ) {
 546                         if ( strlen( $oldimage ) < 16 ) {
 547                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 548                                 return;
 549                         }
 550                         if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 551                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 552                                 return;
 553                         }
 554                         if ( !$this->doDeleteOldImage( $oldimage ) ) {
 555                                 return;
 556                         }
 557                         $deleted = $oldimage;
 558                 } else {
 559                         $ok = $this->img->delete( $reason );
 560                         if( !$ok ) {
 561                                 # If the deletion operation actually failed, bug out:
 562                                 $wgOut->showFileDeleteError( $this->img->getName() );
 563                                 return;
 564                         }
 565
 566                         # Image itself is now gone, and database is cleaned.
 567                         # Now we remove the image description page.
 568
 569                         $article = new Article( $this->mTitle );
 570                         $article->doDeleteArticle( $reason ); # ignore errors
 571
 572                         $deleted = $this->img->getName();
 573                 }
 574
 575                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 576                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 577
 578                 $loglink = '[[Special:Log/delete|' . wfMsg( 'deletionlog' ) . ']]';
 579                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 580
 581                 $wgOut->addWikiText( $text );
 582
 583                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 584         }
 585
 586         /**
 587          * @return success
 588          */
 589         function doDeleteOldImage( $oldimage )
 590         {
 591                 global $wgOut;
 592
 593                 $ok = $this->img->deleteOld( $oldimage, '' );
 594                 if( !$ok ) {
 595                         # If we actually have a file and can't delete it, throw an error.
 596                         # Something went awry...
 597                         $wgOut->showFileDeleteError( "$oldimage" );
 598                 } else {
 599                         # Log the deletion
 600                         $log = new LogPage( 'delete' );
 601                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 602                 }
 603                 return $ok;
 604         }
 605
 606         function revert() {
 607                 global $wgOut, $wgRequest, $wgUser;
 608
 609                 $oldimage = $wgRequest->getText( 'oldimage' );
 610                 if ( strlen( $oldimage ) < 16 ) {
 611                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 612                         return;
 613                 }
 614                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 615                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 616                         return;
 617                 }
 618
 619                 if ( wfReadOnly() ) {
 620                         $wgOut->readOnlyPage();
 621                         return;
 622                 }
 623                 if( $wgUser->isAnon() ) {
 624                         $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 625                         return;
 626                 }
 627                 if ( ! $this->mTitle->userCan( 'edit' ) ) {
 628                         $wgOut->readOnlyPage( $this->getContent(), true );
 629                         return;
 630                 }
 631                 if ( $wgUser->isBlocked() ) {
 632                         return $this->blockedIPpage();
 633                 }
 634                 if( !$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 635                         $wgOut->showErrorPage( '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_dir( $dest ) ) wfMkdirParents( $dest );
 645                 if ( !is_dir( $archive ) ) wfMkdirParents( $archive );
 646
 647                 if ( ! is_file( $curfile ) ) {
 648                         $wgOut->showFileNotFoundError( htmlspecialchars( $curfile ) );
 649                         return;
 650                 }
 651                 $oldver = wfTimestampNow() . "!{$name}";
 652
 653                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 654                         $wgOut->showFileRenameError( $curfile, "${archive}/{$oldver}" );
 655                         return;
 656                 }
 657                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 658                         $wgOut->showFileCopyError( "${archive}/{$oldimage}", $curfile );
 659                         return;
 660                 }
 661
 662                 # Record upload and update metadata cache
 663                 $img = Image::newFromName( $name );
 664                 $img->recordUpload( $oldver, wfMsg( "reverted" ) );
 665
 666                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 667                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 668                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 669
 670                 $descTitle = $img->getTitle();
 671                 $wgOut->returnToMain( false, $descTitle->getPrefixedText() );
 672         }
 673
 674         function blockedIPpage() {
 675                 $edit = new EditPage( $this );
 676                 return $edit->blockedIPpage();
 677         }
 678
 679         /**
 680          * Override handling of action=purge
 681          */
 682         function doPurge() {
 683                 $this->img = new Image( $this->mTitle );
 684                 if( $this->img->exists() ) {
 685                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 686                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 687                         $update->doUpdate();
 688                         $this->img->purgeCache();
 689                 } else {
 690                         wfDebug( "ImagePage::doPurge no image\n" );
 691                 }
 692                 parent::doPurge();
 693         }
 694
 695 }
 696
 697 /**
 698  * @todo document
 699  */
 700 class ImageHistoryList {
 701         function ImageHistoryList( &$skin ) {
 702                 $this->skin =& $skin;
 703         }
 704
 705         function beginImageHistoryList() {
 706                 $s = "\n" .
 707                         Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'imghistory' ) ) .
 708                         "\n<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 709                 return $s;
 710         }
 711
 712         function endImageHistoryList() {
 713                 $s = "</ul>\n";
 714                 return $s;
 715         }
 716
 717         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description, $width, $height ) {
 718                 global $wgUser, $wgLang, $wgTitle, $wgContLang;
 719
 720                 $datetime = $wgLang->timeanddate( $timestamp, true );
 721                 $del = wfMsgHtml( 'deleteimg' );
 722                 $delall = wfMsgHtml( 'deleteimgcompletely' );
 723                 $cur = wfMsgHtml( 'cur' );
 724
 725                 if ( $iscur ) {
 726                         $url = Image::imageUrl( $img );
 727                         $rlink = $cur;
 728                         if ( $wgUser->isAllowed('delete') ) {
 729                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 730                                   '&action=delete' );
 731                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 732
 733                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 734                         } else {
 735                                 $dlink = $del;
 736                         }
 737                 } else {
 738                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 739                         if( $wgUser->getID() != 0 && $wgTitle->userCan( 'edit' ) ) {
 740                                 $token = urlencode( $wgUser->editToken( $img ) );
 741                                 $rlink = $this->skin->makeKnownLinkObj( $wgTitle,
 742                                            wfMsgHtml( 'revertimg' ), 'action=revert&oldimage=' .
 743                                            urlencode( $img ) . "&wpEditToken=$token" );
 744                                 $dlink = $this->skin->makeKnownLinkObj( $wgTitle,
 745                                            $del, 'action=delete&oldimage=' . urlencode( $img ) .
 746                                            "&wpEditToken=$token" );
 747                         } else {
 748                                 # Having live active links for non-logged in users
 749                                 # means that bots and spiders crawling our site can
 750                                 # inadvertently change content. Baaaad idea.
 751                                 $rlink = wfMsgHtml( 'revertimg' );
 752                                 $dlink = $del;
 753                         }
 754                 }
 755
 756                 $userlink = $this->skin->userLink( $user, $usertext ) . $this->skin->userToolLinks( $user, $usertext );
 757                 $nbytes = wfMsgExt( 'nbytes', array( 'parsemag', 'escape' ),
 758                         $wgLang->formatNum( $size ) );
 759                 $widthheight = wfMsgHtml( 'widthheight', $width, $height );
 760                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 761
 762                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a> . . {$userlink} . . {$widthheight} ({$nbytes})";
 763
 764                 $s .= $this->skin->commentBlock( $description, $wgTitle );
 765                 $s .= "</li>\n";
 766                 return $s;
 767         }
 768
 769 }
 770
 771
 772 ?>