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 != '-' && !wfEmptyMsg( 'shareddescriptionfollows', $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
 170                 $full_url  = $this->img->getURL();
 171                 $linkAttribs = false;
 172                 $sizeSel = intval( $wgUser->getOption( 'imagesize') );
 173                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 174                         $sizeSel = User::getDefaultOption( 'imagesize' );
 175
 176                         // The user offset might still be incorrect, specially if
 177                         // $wgImageLimits got changed (see bug #8858).
 178                         if( !isset( $wgImageLimits[$sizeSel] ) ) {
 179                                 // Default to the first offset in $wgImageLimits
 180                                 $sizeSel = 0;
 181                         }
 182                 }
 183                 $max = $wgImageLimits[$sizeSel];
 184                 $maxWidth = $max[0];
 185                 $maxHeight = $max[1];
 186                 $sk = $wgUser->getSkin();
 187
 188                 if ( $this->img->exists() ) {
 189                         # image
 190                         $page = $wgRequest->getIntOrNull( 'page' );
 191                         if ( is_null( $page ) ) {
 192                                 $params = array();
 193                                 $page = 1;
 194                         } else {
 195                                 $params = array( 'page' => $page );
 196                         }
 197                         $width_orig = $this->img->getWidth();
 198                         $width = $width_orig;
 199                         $height_orig = $this->img->getHeight();
 200                         $height = $height_orig;
 201                         $mime = $this->img->getMimeType();
 202                         $showLink = false;
 203                         $linkAttribs = array( 'href' => $full_url );
 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                                 $params['width'] = $width;
 228                                 $thumbnail = $this->img->transform( $params );
 229
 230                                 $anchorclose = "<br />";
 231                                 if( $this->img->mustRender() ) {
 232                                         $showLink = true;
 233                                 } else {
 234                                         $anchorclose .=
 235                                                 wfMsg('show-big-image-thumb', $width, $height ) .
 236                                                 '<br />' . Xml::tags( 'a', $linkAttribs,  $msgbig ) . ' ' . $msgsize;
 237                                 }
 238
 239                                 if ( $this->img->isMultipage() ) {
 240                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 241                                 }
 242
 243                                 $imgAttribs = array(
 244                                         'border' => 0,
 245                                         'alt' => $this->img->getTitle()->getPrefixedText()
 246                                 );
 247
 248                                 if ( $thumbnail ) {
 249                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 250                                                 $thumbnail->toHtml( $imgAttribs, $linkAttribs ) .
 251                                                 $anchorclose . '</div>' );
 252                                 }
 253
 254                                 if ( $this->img->isMultipage() ) {
 255                                         $count = $this->img->pageCount();
 256
 257                                         if ( $page > 1 ) {
 258                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 259                                                 $link = $sk->makeLinkObj( $this->mTitle, $label, 'page='. ($page-1) );
 260                                                 $thumb1 = $sk->makeThumbLinkObj( $this->img, $link, $label, 'none',
 261                                                         array( 'page' => $page - 1 ) );
 262                                         } else {
 263                                                 $thumb1 = '';
 264                                         }
 265
 266                                         if ( $page < $count ) {
 267                                                 $label = wfMsg( 'imgmultipagenext' );
 268                                                 $link = $sk->makeLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 269                                                 $thumb2 = $sk->makeThumbLinkObj( $this->img, $link, $label, 'none',
 270                                                         array( 'page' => $page + 1 ) );
 271                                         } else {
 272                                                 $thumb2 = '';
 273                                         }
 274
 275                                         global $wgScript;
 276                                         $select = '<form name="pageselector" action="' .
 277                                                 htmlspecialchars( $wgScript ) .
 278                                                 '" method="get" onchange="document.pageselector.submit();">' .
 279                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() );
 280                                         $select .= $wgOut->parse( wfMsg( 'imgmultigotopre' ), false ) .
 281                                                 ' <select id="pageselector" name="page">';
 282                                         for ( $i=1; $i <= $count; $i++ ) {
 283                                                 $select .= Xml::option( $wgLang->formatNum( $i ), $i,
 284                                                         $i == $page );
 285                                         }
 286                                         $select .= '</select>' . $wgOut->parse( wfMsg( 'imgmultigotopost' ), false ) .
 287                                                 '<input type="submit" value="' .
 288                                                 htmlspecialchars( wfMsg( 'imgmultigo' ) ) . '"></form>';
 289
 290                                         $wgOut->addHTML( '</td><td><div class="multipageimagenavbox">' .
 291                                                 "$select<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>" );
 292                                 }
 293                         } else {
 294                                 #if direct link is allowed but it's not a renderable image, show an icon.
 295                                 if ($this->img->isSafeFile()) {
 296                                         $icon= $this->img->iconThumb();
 297
 298                                         $wgOut->addHTML( '<div class="fullImageLink" id="file"><a href="' . $full_url . '">' .
 299                                         $icon->toHtml() .
 300                                         '</a></div>' );
 301                                 }
 302
 303                                 $showLink = true;
 304                         }
 305
 306
 307                         if ($showLink) {
 308                                 // Workaround for incorrect MIME type on SVGs uploaded in previous versions
 309                                 if ($mime == 'image/svg') $mime = 'image/svg+xml';
 310
 311                                 $filename = wfEscapeWikiText( $this->img->getName() );
 312                                 $info = wfMsg( 'file-info', $sk->formatSize( $this->img->getSize() ), $mime );
 313                                 $infores = '';
 314
 315                                 // Check for MIME type. Other types may have more information in the future.
 316                                 if (substr($mime,0,9) == 'image/svg' ) {
 317                                         $infores = wfMsg('file-svg', $width_orig, $height_orig ) . '<br />';
 318                                 } elseif ( substr($mime,0,5) == 'image' ) {
 319                                         $infores = wfMsg('file-nohires') . '<br />';
 320                                         $info = wfMsg(
 321                                                 'file-info-size',
 322                                                 $width_orig, $height_orig,
 323                                                 $sk->formatSize( $this->img->getSize() ),
 324                                                 $mime );
 325                                 }
 326
 327                                 global $wgContLang;
 328                                 $dirmark = $wgContLang->getDirMark();
 329                                 if (!$this->img->isSafeFile()) {
 330                                         $warning = wfMsg( 'mediawarning' );
 331                                         $wgOut->addWikiText( <<<END
 332 <div class="fullMedia">$infores
 333 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 334 <span class="fileInfo"> $info</span>
 335 </div>
 336
 337 <div class="mediaWarning">$warning</div>
 338 END
 339                                                 );
 340                                 } else {
 341                                         $wgOut->addWikiText( <<<END
 342 <div class="fullMedia">$infores
 343 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> $info</span>
 344 </div>
 345 END
 346                                                 );
 347                                 }
 348                         }
 349
 350                         if($this->img->fromSharedDirectory) {
 351                                 $this->printSharedImageText();
 352                         }
 353                 } else {
 354                         # Image does not exist
 355
 356                         $title = SpecialPage::getTitleFor( 'Upload' );
 357                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 358                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 359                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 360                 }
 361         }
 362
 363         function printSharedImageText() {
 364                 global $wgRepositoryBaseUrl, $wgFetchCommonsDescriptions, $wgOut, $wgUser;
 365
 366                 $url = $wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey());
 367                 $sharedtext = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml("sharedupload");
 368                 if ($wgRepositoryBaseUrl && !$wgFetchCommonsDescriptions) {
 369
 370                         $sk = $wgUser->getSkin();
 371                         $title = SpecialPage::getTitleFor( 'Upload' );
 372                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('shareduploadwiki-linktext'),
 373                         array( 'wpDestFile' => urlencode( $this->img->getName() )));
 374                         $sharedtext .= " " . wfMsgWikiHtml('shareduploadwiki', $link);
 375                 }
 376                 $sharedtext .= "</div>";
 377                 $wgOut->addHTML($sharedtext);
 378
 379                 if ($wgRepositoryBaseUrl && $wgFetchCommonsDescriptions) {
 380                         $renderUrl = wfAppendQuery( $url, 'action=render' );
 381                         wfDebug( "Fetching shared description from $renderUrl\n" );
 382                         $text = Http::get( $renderUrl );
 383                         if ($text)
 384                                 $this->mExtraDescription = $text;
 385                 }
 386         }
 387
 388         function getUploadUrl() {
 389                 global $wgServer;
 390                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 391                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 392         }
 393
 394         /**
 395          * Print out the various links at the bottom of the image page, e.g. reupload,
 396          * external editing (and instructions link) etc.
 397          */
 398         function uploadLinksBox() {
 399                 global $wgUser, $wgOut;
 400
 401                 if( $this->img->fromSharedDirectory )
 402                         return;
 403
 404                 $sk = $wgUser->getSkin();
 405
 406                 $wgOut->addHtml( '<br /><ul>' );
 407
 408                 # "Upload a new version of this file" link
 409                 if( $wgUser->isAllowed( 'reupload' ) ) {
 410                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 411                         $wgOut->addHtml( "<li><div class='plainlinks'>{$ulink}</div></li>" );
 412                 }
 413
 414                 # External editing link
 415                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 416                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 417
 418                 $wgOut->addHtml( '</ul>' );
 419         }
 420
 421         function closeShowImage()
 422         {
 423                 # For overloading
 424
 425         }
 426
 427         /**
 428          * If the page we've just displayed is in the "Image" namespace,
 429          * we follow it with an upload history of the image and its usage.
 430          */
 431         function imageHistory()
 432         {
 433                 global $wgUser, $wgOut, $wgUseExternalEditor;
 434
 435                 $sk = $wgUser->getSkin();
 436
 437                 $line = $this->img->nextHistoryLine();
 438
 439                 if ( $line ) {
 440                         $list = new ImageHistoryList( $sk );
 441                         $s = $list->beginImageHistoryList() .
 442                                 $list->imageHistoryLine( true, wfTimestamp(TS_MW, $line->img_timestamp),
 443                                         $this->mTitle->getDBkey(),  $line->img_user,
 444                                         $line->img_user_text, $line->img_size, $line->img_description,
 445                                         $line->img_width, $line->img_height
 446                                 );
 447
 448                         while ( $line = $this->img->nextHistoryLine() ) {
 449                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 450                                         $line->oi_archive_name, $line->img_user,
 451                                         $line->img_user_text, $line->img_size, $line->img_description,
 452                                         $line->img_width, $line->img_height
 453                                 );
 454                         }
 455                         $s .= $list->endImageHistoryList();
 456                 } else { $s=''; }
 457                 $wgOut->addHTML( $s );
 458
 459                 # Exist check because we don't want to show this on pages where an image
 460                 # doesn't exist along with the noimage message, that would suck. -ævar
 461                 if( $wgUseExternalEditor && $this->img->exists() ) {
 462                         $this->uploadLinksBox();
 463                 }
 464
 465         }
 466
 467         function imageLinks()
 468         {
 469                 global $wgUser, $wgOut;
 470
 471                 $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'filelinks' ), wfMsg( 'imagelinks' ) ) . "\n" );
 472
 473                 $dbr = wfGetDB( DB_SLAVE );
 474                 $page = $dbr->tableName( 'page' );
 475                 $imagelinks = $dbr->tableName( 'imagelinks' );
 476
 477                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 478                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 479                 $sql = $dbr->limitResult($sql, 500, 0);
 480                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 481
 482                 if ( 0 == $dbr->numRows( $res ) ) {
 483                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 484                         return;
 485                 }
 486                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 487
 488                 $sk = $wgUser->getSkin();
 489                 while ( $s = $dbr->fetchObject( $res ) ) {
 490                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 491                         $link = $sk->makeKnownLinkObj( $name, "" );
 492                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 493                 }
 494                 $wgOut->addHTML( "</ul>\n" );
 495         }
 496
 497         function delete()
 498         {
 499                 global $wgUser, $wgOut, $wgRequest;
 500
 501                 $confirm = $wgRequest->wasPosted();
 502                 $reason = $wgRequest->getVal( 'wpReason' );
 503                 $image = $wgRequest->getVal( 'image' );
 504                 $oldimage = $wgRequest->getVal( 'oldimage' );
 505
 506                 # Only sysops can delete images. Previously ordinary users could delete
 507                 # old revisions, but this is no longer the case.
 508                 if ( !$wgUser->isAllowed('delete') ) {
 509                         $wgOut->permissionRequired( 'delete' );
 510                         return;
 511                 }
 512                 if ( $wgUser->isBlocked() ) {
 513                         return $this->blockedIPpage();
 514                 }
 515                 if ( wfReadOnly() ) {
 516                         $wgOut->readOnlyPage();
 517                         return;
 518                 }
 519
 520                 # Better double-check that it hasn't been deleted yet!
 521                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 522                 if ( ( !is_null( $image ) )
 523                   && ( '' == trim( $image ) ) ) {
 524                         $wgOut->showFatalError( wfMsg( 'cannotdelete' ) );
 525                         return;
 526                 }
 527
 528                 $this->img  = new Image( $this->mTitle );
 529
 530                 # Deleting old images doesn't require confirmation
 531                 if ( !is_null( $oldimage ) || $confirm ) {
 532                         if( $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 533                                 $this->doDelete( $reason );
 534                         } else {
 535                                 $wgOut->showFatalError( wfMsg( 'sessionfailure' ) );
 536                         }
 537                         return;
 538                 }
 539
 540                 if ( !is_null( $image ) ) {
 541                         $q = '&image=' . urlencode( $image );
 542                 } else if ( !is_null( $oldimage ) ) {
 543                         $q = '&oldimage=' . urlencode( $oldimage );
 544                 } else {
 545                         $q = '';
 546                 }
 547                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 548         }
 549
 550         /*
 551          * Delete an image.
 552          * @param $reason User provided reason for deletion.
 553          */
 554         function doDelete( $reason ) {
 555                 global $wgOut, $wgRequest;
 556
 557                 $oldimage = $wgRequest->getVal( 'oldimage' );
 558
 559                 if ( !is_null( $oldimage ) ) {
 560                         if ( strlen( $oldimage ) < 16 ) {
 561                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 562                                 return;
 563                         }
 564                         if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 565                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 566                                 return;
 567                         }
 568                         if ( !$this->doDeleteOldImage( $oldimage ) ) {
 569                                 return;
 570                         }
 571                         $deleted = $oldimage;
 572                 } else {
 573                         $ok = $this->img->delete( $reason );
 574                         if( !$ok ) {
 575                                 # If the deletion operation actually failed, bug out:
 576                                 $wgOut->showFileDeleteError( $this->img->getName() );
 577                                 return;
 578                         }
 579
 580                         # Image itself is now gone, and database is cleaned.
 581                         # Now we remove the image description page.
 582
 583                         $article = new Article( $this->mTitle );
 584                         $article->doDeleteArticle( $reason ); # ignore errors
 585
 586                         $deleted = $this->img->getName();
 587                 }
 588
 589                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 590                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 591
 592                 $loglink = '[[Special:Log/delete|' . wfMsg( 'deletionlog' ) . ']]';
 593                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 594
 595                 $wgOut->addWikiText( $text );
 596
 597                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 598         }
 599
 600         /**
 601          * @return success
 602          */
 603         function doDeleteOldImage( $oldimage )
 604         {
 605                 global $wgOut;
 606
 607                 $ok = $this->img->deleteOld( $oldimage, '' );
 608                 if( !$ok ) {
 609                         # If we actually have a file and can't delete it, throw an error.
 610                         # Something went awry...
 611                         $wgOut->showFileDeleteError( "$oldimage" );
 612                 } else {
 613                         # Log the deletion
 614                         $log = new LogPage( 'delete' );
 615                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 616                 }
 617                 return $ok;
 618         }
 619
 620         function revert() {
 621                 global $wgOut, $wgRequest, $wgUser;
 622
 623                 $oldimage = $wgRequest->getText( 'oldimage' );
 624                 if ( strlen( $oldimage ) < 16 ) {
 625                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 626                         return;
 627                 }
 628                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 629                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 630                         return;
 631                 }
 632
 633                 if ( wfReadOnly() ) {
 634                         $wgOut->readOnlyPage();
 635                         return;
 636                 }
 637                 if( $wgUser->isAnon() ) {
 638                         $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 639                         return;
 640                 }
 641                 if ( ! $this->mTitle->userCan( 'edit' ) ) {
 642                         $wgOut->readOnlyPage( $this->getContent(), true );
 643                         return;
 644                 }
 645                 if ( $wgUser->isBlocked() ) {
 646                         return $this->blockedIPpage();
 647                 }
 648                 if( !$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 649                         $wgOut->showErrorPage( 'internalerror', 'sessionfailure' );
 650                         return;
 651                 }
 652                 $name = substr( $oldimage, 15 );
 653
 654                 $dest = wfImageDir( $name );
 655                 $archive = wfImageArchiveDir( $name );
 656                 $curfile = "{$dest}/{$name}";
 657
 658                 if ( !is_dir( $dest ) ) wfMkdirParents( $dest );
 659                 if ( !is_dir( $archive ) ) wfMkdirParents( $archive );
 660
 661                 if ( ! is_file( $curfile ) ) {
 662                         $wgOut->showFileNotFoundError( htmlspecialchars( $curfile ) );
 663                         return;
 664                 }
 665                 $oldver = wfTimestampNow() . "!{$name}";
 666
 667                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 668                         $wgOut->showFileRenameError( $curfile, "${archive}/{$oldver}" );
 669                         return;
 670                 }
 671                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 672                         $wgOut->showFileCopyError( "${archive}/{$oldimage}", $curfile );
 673                         return;
 674                 }
 675
 676                 # Record upload and update metadata cache
 677                 $img = Image::newFromName( $name );
 678                 $img->recordUpload( $oldver, wfMsg( "reverted" ) );
 679
 680                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 681                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 682                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 683
 684                 $descTitle = $img->getTitle();
 685                 $wgOut->returnToMain( false, $descTitle->getPrefixedText() );
 686         }
 687
 688         function blockedIPpage() {
 689                 $edit = new EditPage( $this );
 690                 return $edit->blockedIPpage();
 691         }
 692
 693         /**
 694          * Override handling of action=purge
 695          */
 696         function doPurge() {
 697                 $this->img = new Image( $this->mTitle );
 698                 if( $this->img->exists() ) {
 699                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 700                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 701                         $update->doUpdate();
 702                         $this->img->purgeCache();
 703                 } else {
 704                         wfDebug( "ImagePage::doPurge no image\n" );
 705                 }
 706                 parent::doPurge();
 707         }
 708
 709 }
 710
 711 /**
 712  * @todo document
 713  */
 714 class ImageHistoryList {
 715         function ImageHistoryList( &$skin ) {
 716                 $this->skin =& $skin;
 717         }
 718
 719         function beginImageHistoryList() {
 720                 $s = "\n" .
 721                         Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'imghistory' ) ) .
 722                         "\n<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 723                 return $s;
 724         }
 725
 726         function endImageHistoryList() {
 727                 $s = "</ul>\n";
 728                 return $s;
 729         }
 730
 731         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description, $width, $height ) {
 732                 global $wgUser, $wgLang, $wgTitle, $wgContLang;
 733
 734                 $datetime = $wgLang->timeanddate( $timestamp, true );
 735                 $del = wfMsgHtml( 'deleteimg' );
 736                 $delall = wfMsgHtml( 'deleteimgcompletely' );
 737                 $cur = wfMsgHtml( 'cur' );
 738
 739                 if ( $iscur ) {
 740                         $url = Image::imageUrl( $img );
 741                         $rlink = $cur;
 742                         if ( $wgUser->isAllowed('delete') ) {
 743                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 744                                   '&action=delete' );
 745                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 746
 747                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 748                         } else {
 749                                 $dlink = $del;
 750                         }
 751                 } else {
 752                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 753                         if( $wgUser->getID() != 0 && $wgTitle->userCan( 'edit' ) ) {
 754                                 $token = urlencode( $wgUser->editToken( $img ) );
 755                                 $rlink = $this->skin->makeKnownLinkObj( $wgTitle,
 756                                            wfMsgHtml( 'revertimg' ), 'action=revert&oldimage=' .
 757                                            urlencode( $img ) . "&wpEditToken=$token" );
 758                                 $dlink = $this->skin->makeKnownLinkObj( $wgTitle,
 759                                            $del, 'action=delete&oldimage=' . urlencode( $img ) .
 760                                            "&wpEditToken=$token" );
 761                         } else {
 762                                 # Having live active links for non-logged in users
 763                                 # means that bots and spiders crawling our site can
 764                                 # inadvertently change content. Baaaad idea.
 765                                 $rlink = wfMsgHtml( 'revertimg' );
 766                                 $dlink = $del;
 767                         }
 768                 }
 769
 770                 $userlink = $this->skin->userLink( $user, $usertext ) . $this->skin->userToolLinks( $user, $usertext );
 771                 $nbytes = wfMsgExt( 'nbytes', array( 'parsemag', 'escape' ),
 772                         $wgLang->formatNum( $size ) );
 773                 $widthheight = wfMsgHtml( 'widthheight', $width, $height );
 774                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 775
 776                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a> . . {$userlink} . . {$widthheight} ({$nbytes})";
 777
 778                 $s .= $this->skin->commentBlock( $description, $wgTitle );
 779                 $s .= "</li>\n";
 780                 return $s;
 781         }
 782
 783 }
 784
 785
 786 ?>