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                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 176                         $sizeSel = User::getDefaultOption( 'imagesize' );
 177
 178                         // The user offset might still be incorrect, specially if
 179                         // $wgImageLimits got changed (see bug #8858).
 180                         if( !isset( $wgImageLimits[$sizeSel] ) ) {
 181                                 // Default to the first offset in $wgImageLimits
 182                                 $sizeSel = 0;
 183                         }
 184                 }
 185                 $max = $wgImageLimits[$sizeSel];
 186                 $maxWidth = $max[0];
 187                 $maxHeight = $max[1];
 188                 $sk = $wgUser->getSkin();
 189
 190                 if ( $this->img->exists() ) {
 191                         # image
 192                         $page = $wgRequest->getIntOrNull( 'page' );
 193                         if ( ! is_null( $page ) ) {
 194                                 $this->img->selectPage( $page );
 195                         } else {
 196                                 $page = 1;
 197                         }
 198                         $width_orig = $this->img->getWidth();
 199                         $width = $width_orig;
 200                         $height_orig = $this->img->getHeight();
 201                         $height = $height_orig;
 202                         $mime = $this->img->getMimeType();
 203                         $showLink = false;
 204
 205                         if ( $this->img->allowInlineDisplay() and $width and $height) {
 206                                 # image
 207
 208                                 # "Download high res version" link below the image
 209                                 $msgbig  = wfMsgHtml('show-big-image');
 210                                 $msgsize = wfMsgHtml('file-info-size', $width_orig, $height_orig, $sk->formatSize( $this->img->getSize() ), $mime );
 211                                 # We'll show a thumbnail of this image
 212                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 213                                         # Calculate the thumbnail size.
 214                                         # First case, the limiting factor is the width, not the height.
 215                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 216                                                 $height = round( $height * $maxWidth / $width);
 217                                                 $width = $maxWidth;
 218                                                 # Note that $height <= $maxHeight now.
 219                                         } else {
 220                                                 $newwidth = floor( $width * $maxHeight / $height);
 221                                                 $height = round( $height * $newwidth / $width );
 222                                                 $width = $newwidth;
 223                                                 # Note that $height <= $maxHeight now, but might not be identical
 224                                                 # because of rounding.
 225                                         }
 226
 227                                         if( $wgUseImageResize ) {
 228                                                 $thumbnail = $this->img->getThumbnail( $width, -1, $wgGenerateThumbnailOnParse );
 229                                                 if ( $thumbnail == null ) {
 230                                                         $url = $this->img->getViewURL();
 231                                                 } else {
 232                                                         $url = $thumbnail->getURL();
 233                                                 }
 234                                         } else {
 235                                                 # No resize ability? Show the full image, but scale
 236                                                 # it down in the browser so it fits on the page.
 237                                                 $url = $this->img->getViewURL();
 238                                         }
 239                                         $anchoropen  = "<a href=\"{$full_url}\">";
 240                                         $anchorclose = "</a><br />";
 241                                         if( $this->img->mustRender() ) {
 242                                                 $showLink = true;
 243                                         } else {
 244                                                 $anchorclose .= wfMsg('show-big-image-thumb', $width, $height ) .
 245                                                         '<br />' . "\n$anchoropen{$msgbig}</a> " . $msgsize;
 246                                         }
 247                                 } else {
 248                                         $url = $this->img->getViewURL();
 249                                         $showLink = true;
 250                                 }
 251
 252                                 if ( $this->img->isMultipage() ) {
 253                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 254                                 }
 255
 256                                 $wgOut->addHTML( '<div class="fullImageLink" id="file">' . $anchoropen .
 257                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
 258                                      htmlspecialchars( $this->img->getTitle()->getPrefixedText() ).'" />' . $anchorclose . '</div>' );
 259
 260                                 if ( $this->img->isMultipage() ) {
 261                                         $count = $this->img->pageCount();
 262
 263                                         if ( $page > 1 ) {
 264                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 265                                                 $link = $sk->makeLinkObj( $this->mTitle, $label, 'page='. ($page-1) );
 266                                                 $this->img->selectPage( $page - 1 );
 267                                                 $thumb1 = $sk->makeThumbLinkObj( $this->img, $link, $label, 'none' );
 268                                         } else {
 269                                                 $thumb1 = '';
 270                                         }
 271
 272                                         if ( $page < $count ) {
 273                                                 $label = wfMsg( 'imgmultipagenext' );
 274                                                 $this->img->selectPage( $page + 1 );
 275                                                 $link = $sk->makeLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 276                                                 $thumb2 = $sk->makeThumbLinkObj( $this->img, $link, $label, 'none' );
 277                                         } else {
 278                                                 $thumb2 = '';
 279                                         }
 280
 281                                         global $wgScript;
 282                                         $select = '<form name="pageselector" action="' .
 283                                                 htmlspecialchars( $wgScript ) .
 284                                                 '" method="get" onchange="document.pageselector.submit();">' .
 285                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() );
 286                                         $select .= $wgOut->parse( wfMsg( 'imgmultigotopre' ), false ) .
 287                                                 ' <select id="pageselector" name="page">';
 288                                         for ( $i=1; $i <= $count; $i++ ) {
 289                                                 $select .= Xml::option( $wgLang->formatNum( $i ), $i,
 290                                                         $i == $page );
 291                                         }
 292                                         $select .= '</select>' . $wgOut->parse( wfMsg( 'imgmultigotopost' ), false ) .
 293                                                 '<input type="submit" value="' .
 294                                                 htmlspecialchars( wfMsg( 'imgmultigo' ) ) . '"></form>';
 295
 296                                         $wgOut->addHTML( '</td><td><div class="multipageimagenavbox">' .
 297                                            "$select<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>" );
 298                                 }
 299                         } else {
 300                                 #if direct link is allowed but it's not a renderable image, show an icon.
 301                                 if ($this->img->isSafeFile()) {
 302                                         $icon= $this->img->iconThumb();
 303
 304                                         $wgOut->addHTML( '<div class="fullImageLink" id="file"><a href="' . $full_url . '">' .
 305                                         $icon->toHtml() .
 306                                         '</a></div>' );
 307                                 }
 308
 309                                 $showLink = true;
 310                         }
 311
 312
 313                         if ($showLink) {
 314                                 // Hacky workaround: for some reason we use the incorrect MIME type
 315                                 // image/svg for SVG.  This should be fixed internally, but at least
 316                                 // make the displayed type right.
 317                                 if ($mime == 'image/svg') $mime = 'image/svg+xml';
 318
 319                                 $filename = wfEscapeWikiText( $this->img->getName() );
 320                                 $info = wfMsg( 'file-info', $sk->formatSize( $this->img->getSize() ), $mime );
 321                                 $infores = '';
 322
 323                                 // Check for MIME type. Other types may have more information in the future.
 324                                 if (substr($mime,0,9) == 'image/svg' ) {
 325                                         $infores = wfMsg('file-svg', $width_orig, $height_orig ) . '<br />';
 326                                 } elseif ( substr($mime,0,5) == 'image' ) {
 327                                         $infores = wfMsg('file-nohires') . '<br />';
 328                                         $info = wfMsg(
 329                                                 'file-info-size',
 330                                                 $width_orig, $height_orig,
 331                                                 $sk->formatSize( $this->img->getSize() ),
 332                                                 $mime );
 333                                 }
 334
 335                                 global $wgContLang;
 336                                 $dirmark = $wgContLang->getDirMark();
 337                                 if (!$this->img->isSafeFile()) {
 338                                         $warning = wfMsg( 'mediawarning' );
 339                                         $wgOut->addWikiText( <<<END
 340 <div class="fullMedia">$infores
 341 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 342 <span class="fileInfo"> $info</span>
 343 </div>
 344
 345 <div class="mediaWarning">$warning</div>
 346 END
 347                                                 );
 348                                 } else {
 349                                         $wgOut->addWikiText( <<<END
 350 <div class="fullMedia">$infores
 351 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> $info</span>
 352 </div>
 353 END
 354                                                 );
 355                                 }
 356                         }
 357
 358                         if($this->img->fromSharedDirectory) {
 359                                 $this->printSharedImageText();
 360                         }
 361                 } else {
 362                         # Image does not exist
 363
 364                         $title = SpecialPage::getTitleFor( 'Upload' );
 365                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 366                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 367                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 368                 }
 369         }
 370
 371         function printSharedImageText() {
 372                 global $wgRepositoryBaseUrl, $wgFetchCommonsDescriptions, $wgOut, $wgUser;
 373
 374                 $url = $wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey());
 375                 $sharedtext = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml("sharedupload");
 376                 if ($wgRepositoryBaseUrl && !$wgFetchCommonsDescriptions) {
 377
 378                         $sk = $wgUser->getSkin();
 379                         $title = SpecialPage::getTitleFor( 'Upload' );
 380                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('shareduploadwiki-linktext'),
 381                         array( 'wpDestFile' => urlencode( $this->img->getName() )));
 382                         $sharedtext .= " " . wfMsgWikiHtml('shareduploadwiki', $link);
 383                 }
 384                 $sharedtext .= "</div>";
 385                 $wgOut->addHTML($sharedtext);
 386
 387                 if ($wgRepositoryBaseUrl && $wgFetchCommonsDescriptions) {
 388                         $text = Http::get($url . '?action=render');
 389                         if ($text)
 390                                 $this->mExtraDescription = $text;
 391                 }
 392         }
 393
 394         function getUploadUrl() {
 395                 global $wgServer;
 396                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 397                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 398         }
 399
 400         /**
 401          * Print out the various links at the bottom of the image page, e.g. reupload,
 402          * external editing (and instructions link) etc.
 403          */
 404         function uploadLinksBox() {
 405                 global $wgUser, $wgOut;
 406
 407                 if( $this->img->fromSharedDirectory )
 408                         return;
 409
 410                 $sk = $wgUser->getSkin();
 411
 412                 $wgOut->addHtml( '<br /><ul>' );
 413
 414                 # "Upload a new version of this file" link
 415                 if( $wgUser->isAllowed( 'reupload' ) ) {
 416                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 417                         $wgOut->addHtml( "<li><div class='plainlinks'>{$ulink}</div></li>" );
 418                 }
 419
 420                 # External editing link
 421                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 422                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 423
 424                 $wgOut->addHtml( '</ul>' );
 425         }
 426
 427         function closeShowImage()
 428         {
 429                 # For overloading
 430
 431         }
 432
 433         /**
 434          * If the page we've just displayed is in the "Image" namespace,
 435          * we follow it with an upload history of the image and its usage.
 436          */
 437         function imageHistory()
 438         {
 439                 global $wgUser, $wgOut, $wgUseExternalEditor;
 440
 441                 $sk = $wgUser->getSkin();
 442
 443                 $line = $this->img->nextHistoryLine();
 444
 445                 if ( $line ) {
 446                         $list = new ImageHistoryList( $sk );
 447                         $s = $list->beginImageHistoryList() .
 448                                 $list->imageHistoryLine( true, wfTimestamp(TS_MW, $line->img_timestamp),
 449                                         $this->mTitle->getDBkey(),  $line->img_user,
 450                                         $line->img_user_text, $line->img_size, $line->img_description,
 451                                         $line->img_width, $line->img_height
 452                                 );
 453
 454                         while ( $line = $this->img->nextHistoryLine() ) {
 455                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 456                                         $line->oi_archive_name, $line->img_user,
 457                                         $line->img_user_text, $line->img_size, $line->img_description,
 458                                         $line->img_width, $line->img_height
 459                                 );
 460                         }
 461                         $s .= $list->endImageHistoryList();
 462                 } else { $s=''; }
 463                 $wgOut->addHTML( $s );
 464
 465                 # Exist check because we don't want to show this on pages where an image
 466                 # doesn't exist along with the noimage message, that would suck. -ævar
 467                 if( $wgUseExternalEditor && $this->img->exists() ) {
 468                         $this->uploadLinksBox();
 469                 }
 470
 471         }
 472
 473         function imageLinks()
 474         {
 475                 global $wgUser, $wgOut;
 476
 477                 $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'filelinks' ), wfMsg( 'imagelinks' ) ) . "\n" );
 478
 479                 $dbr = wfGetDB( DB_SLAVE );
 480                 $page = $dbr->tableName( 'page' );
 481                 $imagelinks = $dbr->tableName( 'imagelinks' );
 482
 483                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 484                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 485                 $sql = $dbr->limitResult($sql, 500, 0);
 486                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 487
 488                 if ( 0 == $dbr->numRows( $res ) ) {
 489                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 490                         return;
 491                 }
 492                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 493
 494                 $sk = $wgUser->getSkin();
 495                 while ( $s = $dbr->fetchObject( $res ) ) {
 496                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 497                         $link = $sk->makeKnownLinkObj( $name, "" );
 498                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 499                 }
 500                 $wgOut->addHTML( "</ul>\n" );
 501         }
 502
 503         function delete()
 504         {
 505                 global $wgUser, $wgOut, $wgRequest;
 506
 507                 $confirm = $wgRequest->wasPosted();
 508                 $reason = $wgRequest->getVal( 'wpReason' );
 509                 $image = $wgRequest->getVal( 'image' );
 510                 $oldimage = $wgRequest->getVal( 'oldimage' );
 511
 512                 # Only sysops can delete images. Previously ordinary users could delete
 513                 # old revisions, but this is no longer the case.
 514                 if ( !$wgUser->isAllowed('delete') ) {
 515                         $wgOut->permissionRequired( 'delete' );
 516                         return;
 517                 }
 518                 if ( $wgUser->isBlocked() ) {
 519                         return $this->blockedIPpage();
 520                 }
 521                 if ( wfReadOnly() ) {
 522                         $wgOut->readOnlyPage();
 523                         return;
 524                 }
 525
 526                 # Better double-check that it hasn't been deleted yet!
 527                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 528                 if ( ( !is_null( $image ) )
 529                   && ( '' == trim( $image ) ) ) {
 530                         $wgOut->showFatalError( wfMsg( 'cannotdelete' ) );
 531                         return;
 532                 }
 533
 534                 $this->img  = new Image( $this->mTitle );
 535
 536                 # Deleting old images doesn't require confirmation
 537                 if ( !is_null( $oldimage ) || $confirm ) {
 538                         if( $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 539                                 $this->doDelete( $reason );
 540                         } else {
 541                                 $wgOut->showFatalError( wfMsg( 'sessionfailure' ) );
 542                         }
 543                         return;
 544                 }
 545
 546                 if ( !is_null( $image ) ) {
 547                         $q = '&image=' . urlencode( $image );
 548                 } else if ( !is_null( $oldimage ) ) {
 549                         $q = '&oldimage=' . urlencode( $oldimage );
 550                 } else {
 551                         $q = '';
 552                 }
 553                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 554         }
 555
 556         /*
 557          * Delete an image.
 558          * @param $reason User provided reason for deletion.
 559          */
 560         function doDelete( $reason ) {
 561                 global $wgOut, $wgRequest;
 562
 563                 $oldimage = $wgRequest->getVal( 'oldimage' );
 564
 565                 if ( !is_null( $oldimage ) ) {
 566                         if ( strlen( $oldimage ) < 16 ) {
 567                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 568                                 return;
 569                         }
 570                         if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 571                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 572                                 return;
 573                         }
 574                         if ( !$this->doDeleteOldImage( $oldimage ) ) {
 575                                 return;
 576                         }
 577                         $deleted = $oldimage;
 578                 } else {
 579                         $ok = $this->img->delete( $reason );
 580                         if( !$ok ) {
 581                                 # If the deletion operation actually failed, bug out:
 582                                 $wgOut->showFileDeleteError( $this->img->getName() );
 583                                 return;
 584                         }
 585
 586                         # Image itself is now gone, and database is cleaned.
 587                         # Now we remove the image description page.
 588
 589                         $article = new Article( $this->mTitle );
 590                         $article->doDeleteArticle( $reason ); # ignore errors
 591
 592                         $deleted = $this->img->getName();
 593                 }
 594
 595                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 596                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 597
 598                 $loglink = '[[Special:Log/delete|' . wfMsg( 'deletionlog' ) . ']]';
 599                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 600
 601                 $wgOut->addWikiText( $text );
 602
 603                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 604         }
 605
 606         /**
 607          * @return success
 608          */
 609         function doDeleteOldImage( $oldimage )
 610         {
 611                 global $wgOut;
 612
 613                 $ok = $this->img->deleteOld( $oldimage, '' );
 614                 if( !$ok ) {
 615                         # If we actually have a file and can't delete it, throw an error.
 616                         # Something went awry...
 617                         $wgOut->showFileDeleteError( "$oldimage" );
 618                 } else {
 619                         # Log the deletion
 620                         $log = new LogPage( 'delete' );
 621                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 622                 }
 623                 return $ok;
 624         }
 625
 626         function revert() {
 627                 global $wgOut, $wgRequest, $wgUser;
 628
 629                 $oldimage = $wgRequest->getText( 'oldimage' );
 630                 if ( strlen( $oldimage ) < 16 ) {
 631                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 632                         return;
 633                 }
 634                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 635                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 636                         return;
 637                 }
 638
 639                 if ( wfReadOnly() ) {
 640                         $wgOut->readOnlyPage();
 641                         return;
 642                 }
 643                 if( $wgUser->isAnon() ) {
 644                         $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 645                         return;
 646                 }
 647                 if ( ! $this->mTitle->userCan( 'edit' ) ) {
 648                         $wgOut->readOnlyPage( $this->getContent(), true );
 649                         return;
 650                 }
 651                 if ( $wgUser->isBlocked() ) {
 652                         return $this->blockedIPpage();
 653                 }
 654                 if( !$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 655                         $wgOut->showErrorPage( 'internalerror', 'sessionfailure' );
 656                         return;
 657                 }
 658                 $name = substr( $oldimage, 15 );
 659
 660                 $dest = wfImageDir( $name );
 661                 $archive = wfImageArchiveDir( $name );
 662                 $curfile = "{$dest}/{$name}";
 663
 664                 if ( !is_dir( $dest ) ) wfMkdirParents( $dest );
 665                 if ( !is_dir( $archive ) ) wfMkdirParents( $archive );
 666
 667                 if ( ! is_file( $curfile ) ) {
 668                         $wgOut->showFileNotFoundError( htmlspecialchars( $curfile ) );
 669                         return;
 670                 }
 671                 $oldver = wfTimestampNow() . "!{$name}";
 672
 673                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 674                         $wgOut->showFileRenameError( $curfile, "${archive}/{$oldver}" );
 675                         return;
 676                 }
 677                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 678                         $wgOut->showFileCopyError( "${archive}/{$oldimage}", $curfile );
 679                         return;
 680                 }
 681
 682                 # Record upload and update metadata cache
 683                 $img = Image::newFromName( $name );
 684                 $img->recordUpload( $oldver, wfMsg( "reverted" ) );
 685
 686                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 687                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 688                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 689
 690                 $descTitle = $img->getTitle();
 691                 $wgOut->returnToMain( false, $descTitle->getPrefixedText() );
 692         }
 693
 694         function blockedIPpage() {
 695                 $edit = new EditPage( $this );
 696                 return $edit->blockedIPpage();
 697         }
 698
 699         /**
 700          * Override handling of action=purge
 701          */
 702         function doPurge() {
 703                 $this->img = new Image( $this->mTitle );
 704                 if( $this->img->exists() ) {
 705                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 706                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 707                         $update->doUpdate();
 708                         $this->img->purgeCache();
 709                 } else {
 710                         wfDebug( "ImagePage::doPurge no image\n" );
 711                 }
 712                 parent::doPurge();
 713         }
 714
 715 }
 716
 717 /**
 718  * @todo document
 719  */
 720 class ImageHistoryList {
 721         function ImageHistoryList( &$skin ) {
 722                 $this->skin =& $skin;
 723         }
 724
 725         function beginImageHistoryList() {
 726                 $s = "\n" .
 727                         Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'imghistory' ) ) .
 728                         "\n<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 729                 return $s;
 730         }
 731
 732         function endImageHistoryList() {
 733                 $s = "</ul>\n";
 734                 return $s;
 735         }
 736
 737         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description, $width, $height ) {
 738                 global $wgUser, $wgLang, $wgTitle, $wgContLang;
 739
 740                 $datetime = $wgLang->timeanddate( $timestamp, true );
 741                 $del = wfMsgHtml( 'deleteimg' );
 742                 $delall = wfMsgHtml( 'deleteimgcompletely' );
 743                 $cur = wfMsgHtml( 'cur' );
 744
 745                 if ( $iscur ) {
 746                         $url = Image::imageUrl( $img );
 747                         $rlink = $cur;
 748                         if ( $wgUser->isAllowed('delete') ) {
 749                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 750                                   '&action=delete' );
 751                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 752
 753                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 754                         } else {
 755                                 $dlink = $del;
 756                         }
 757                 } else {
 758                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 759                         if( $wgUser->getID() != 0 && $wgTitle->userCan( 'edit' ) ) {
 760                                 $token = urlencode( $wgUser->editToken( $img ) );
 761                                 $rlink = $this->skin->makeKnownLinkObj( $wgTitle,
 762                                            wfMsgHtml( 'revertimg' ), 'action=revert&oldimage=' .
 763                                            urlencode( $img ) . "&wpEditToken=$token" );
 764                                 $dlink = $this->skin->makeKnownLinkObj( $wgTitle,
 765                                            $del, 'action=delete&oldimage=' . urlencode( $img ) .
 766                                            "&wpEditToken=$token" );
 767                         } else {
 768                                 # Having live active links for non-logged in users
 769                                 # means that bots and spiders crawling our site can
 770                                 # inadvertently change content. Baaaad idea.
 771                                 $rlink = wfMsgHtml( 'revertimg' );
 772                                 $dlink = $del;
 773                         }
 774                 }
 775
 776                 $userlink = $this->skin->userLink( $user, $usertext ) . $this->skin->userToolLinks( $user, $usertext );
 777                 $nbytes = wfMsgExt( 'nbytes', array( 'parsemag', 'escape' ),
 778                         $wgLang->formatNum( $size ) );
 779                 $widthheight = wfMsgHtml( 'widthheight', $width, $height );
 780                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 781
 782                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a> . . {$userlink} . . {$widthheight} ({$nbytes})";
 783
 784                 $s .= $this->skin->commentBlock( $description, $wgTitle );
 785                 $s .= "</li>\n";
 786                 return $s;
 787         }
 788
 789 }
 790
 791
 792 ?>