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                 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                         $renderUrl = wfAppendQuery( $url, 'action=render' );
 389                         wfDebug( "Fetching shared description from $renderUrl\n" );
 390                         $text = Http::get( $renderUrl );
 391                         if ($text)
 392                                 $this->mExtraDescription = $text;
 393                 }
 394         }
 395
 396         function getUploadUrl() {
 397                 global $wgServer;
 398                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 399                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 400         }
 401
 402         /**
 403          * Print out the various links at the bottom of the image page, e.g. reupload,
 404          * external editing (and instructions link) etc.
 405          */
 406         function uploadLinksBox() {
 407                 global $wgUser, $wgOut;
 408
 409                 if( $this->img->fromSharedDirectory )
 410                         return;
 411
 412                 $sk = $wgUser->getSkin();
 413
 414                 $wgOut->addHtml( '<br /><ul>' );
 415
 416                 # "Upload a new version of this file" link
 417                 if( $wgUser->isAllowed( 'reupload' ) ) {
 418                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 419                         $wgOut->addHtml( "<li><div class='plainlinks'>{$ulink}</div></li>" );
 420                 }
 421
 422                 # External editing link
 423                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 424                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 425
 426                 $wgOut->addHtml( '</ul>' );
 427         }
 428
 429         function closeShowImage()
 430         {
 431                 # For overloading
 432
 433         }
 434
 435         /**
 436          * If the page we've just displayed is in the "Image" namespace,
 437          * we follow it with an upload history of the image and its usage.
 438          */
 439         function imageHistory()
 440         {
 441                 global $wgUser, $wgOut, $wgUseExternalEditor;
 442
 443                 $sk = $wgUser->getSkin();
 444
 445                 $line = $this->img->nextHistoryLine();
 446
 447                 if ( $line ) {
 448                         $list = new ImageHistoryList( $sk );
 449                         $s = $list->beginImageHistoryList() .
 450                                 $list->imageHistoryLine( true, wfTimestamp(TS_MW, $line->img_timestamp),
 451                                         $this->mTitle->getDBkey(),  $line->img_user,
 452                                         $line->img_user_text, $line->img_size, $line->img_description,
 453                                         $line->img_width, $line->img_height
 454                                 );
 455
 456                         while ( $line = $this->img->nextHistoryLine() ) {
 457                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 458                                         $line->oi_archive_name, $line->img_user,
 459                                         $line->img_user_text, $line->img_size, $line->img_description,
 460                                         $line->img_width, $line->img_height
 461                                 );
 462                         }
 463                         $s .= $list->endImageHistoryList();
 464                 } else { $s=''; }
 465                 $wgOut->addHTML( $s );
 466
 467                 # Exist check because we don't want to show this on pages where an image
 468                 # doesn't exist along with the noimage message, that would suck. -ævar
 469                 if( $wgUseExternalEditor && $this->img->exists() ) {
 470                         $this->uploadLinksBox();
 471                 }
 472
 473         }
 474
 475         function imageLinks()
 476         {
 477                 global $wgUser, $wgOut;
 478
 479                 $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'filelinks' ), wfMsg( 'imagelinks' ) ) . "\n" );
 480
 481                 $dbr = wfGetDB( DB_SLAVE );
 482                 $page = $dbr->tableName( 'page' );
 483                 $imagelinks = $dbr->tableName( 'imagelinks' );
 484
 485                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 486                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 487                 $sql = $dbr->limitResult($sql, 500, 0);
 488                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 489
 490                 if ( 0 == $dbr->numRows( $res ) ) {
 491                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 492                         return;
 493                 }
 494                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 495
 496                 $sk = $wgUser->getSkin();
 497                 while ( $s = $dbr->fetchObject( $res ) ) {
 498                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 499                         $link = $sk->makeKnownLinkObj( $name, "" );
 500                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 501                 }
 502                 $wgOut->addHTML( "</ul>\n" );
 503         }
 504
 505         function delete()
 506         {
 507                 global $wgUser, $wgOut, $wgRequest;
 508
 509                 $confirm = $wgRequest->wasPosted();
 510                 $reason = $wgRequest->getVal( 'wpReason' );
 511                 $image = $wgRequest->getVal( 'image' );
 512                 $oldimage = $wgRequest->getVal( 'oldimage' );
 513
 514                 # Only sysops can delete images. Previously ordinary users could delete
 515                 # old revisions, but this is no longer the case.
 516                 if ( !$wgUser->isAllowed('delete') ) {
 517                         $wgOut->permissionRequired( 'delete' );
 518                         return;
 519                 }
 520                 if ( $wgUser->isBlocked() ) {
 521                         return $this->blockedIPpage();
 522                 }
 523                 if ( wfReadOnly() ) {
 524                         $wgOut->readOnlyPage();
 525                         return;
 526                 }
 527
 528                 # Better double-check that it hasn't been deleted yet!
 529                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 530                 if ( ( !is_null( $image ) )
 531                   && ( '' == trim( $image ) ) ) {
 532                         $wgOut->showFatalError( wfMsg( 'cannotdelete' ) );
 533                         return;
 534                 }
 535
 536                 $this->img  = new Image( $this->mTitle );
 537
 538                 # Deleting old images doesn't require confirmation
 539                 if ( !is_null( $oldimage ) || $confirm ) {
 540                         if( $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 541                                 $this->doDelete( $reason );
 542                         } else {
 543                                 $wgOut->showFatalError( wfMsg( 'sessionfailure' ) );
 544                         }
 545                         return;
 546                 }
 547
 548                 if ( !is_null( $image ) ) {
 549                         $q = '&image=' . urlencode( $image );
 550                 } else if ( !is_null( $oldimage ) ) {
 551                         $q = '&oldimage=' . urlencode( $oldimage );
 552                 } else {
 553                         $q = '';
 554                 }
 555                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 556         }
 557
 558         /*
 559          * Delete an image.
 560          * @param $reason User provided reason for deletion.
 561          */
 562         function doDelete( $reason ) {
 563                 global $wgOut, $wgRequest;
 564
 565                 $oldimage = $wgRequest->getVal( 'oldimage' );
 566
 567                 if ( !is_null( $oldimage ) ) {
 568                         if ( strlen( $oldimage ) < 16 ) {
 569                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 570                                 return;
 571                         }
 572                         if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 573                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 574                                 return;
 575                         }
 576                         if ( !$this->doDeleteOldImage( $oldimage ) ) {
 577                                 return;
 578                         }
 579                         $deleted = $oldimage;
 580                 } else {
 581                         $ok = $this->img->delete( $reason );
 582                         if( !$ok ) {
 583                                 # If the deletion operation actually failed, bug out:
 584                                 $wgOut->showFileDeleteError( $this->img->getName() );
 585                                 return;
 586                         }
 587
 588                         # Image itself is now gone, and database is cleaned.
 589                         # Now we remove the image description page.
 590
 591                         $article = new Article( $this->mTitle );
 592                         $article->doDeleteArticle( $reason ); # ignore errors
 593
 594                         $deleted = $this->img->getName();
 595                 }
 596
 597                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 598                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 599
 600                 $loglink = '[[Special:Log/delete|' . wfMsg( 'deletionlog' ) . ']]';
 601                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 602
 603                 $wgOut->addWikiText( $text );
 604
 605                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 606         }
 607
 608         /**
 609          * @return success
 610          */
 611         function doDeleteOldImage( $oldimage )
 612         {
 613                 global $wgOut;
 614
 615                 $ok = $this->img->deleteOld( $oldimage, '' );
 616                 if( !$ok ) {
 617                         # If we actually have a file and can't delete it, throw an error.
 618                         # Something went awry...
 619                         $wgOut->showFileDeleteError( "$oldimage" );
 620                 } else {
 621                         # Log the deletion
 622                         $log = new LogPage( 'delete' );
 623                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 624                 }
 625                 return $ok;
 626         }
 627
 628         function revert() {
 629                 global $wgOut, $wgRequest, $wgUser;
 630
 631                 $oldimage = $wgRequest->getText( 'oldimage' );
 632                 if ( strlen( $oldimage ) < 16 ) {
 633                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 634                         return;
 635                 }
 636                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 637                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 638                         return;
 639                 }
 640
 641                 if ( wfReadOnly() ) {
 642                         $wgOut->readOnlyPage();
 643                         return;
 644                 }
 645                 if( $wgUser->isAnon() ) {
 646                         $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 647                         return;
 648                 }
 649                 if ( ! $this->mTitle->userCan( 'edit' ) ) {
 650                         $wgOut->readOnlyPage( $this->getContent(), true );
 651                         return;
 652                 }
 653                 if ( $wgUser->isBlocked() ) {
 654                         return $this->blockedIPpage();
 655                 }
 656                 if( !$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 657                         $wgOut->showErrorPage( 'internalerror', 'sessionfailure' );
 658                         return;
 659                 }
 660                 $name = substr( $oldimage, 15 );
 661
 662                 $dest = wfImageDir( $name );
 663                 $archive = wfImageArchiveDir( $name );
 664                 $curfile = "{$dest}/{$name}";
 665
 666                 if ( !is_dir( $dest ) ) wfMkdirParents( $dest );
 667                 if ( !is_dir( $archive ) ) wfMkdirParents( $archive );
 668
 669                 if ( ! is_file( $curfile ) ) {
 670                         $wgOut->showFileNotFoundError( htmlspecialchars( $curfile ) );
 671                         return;
 672                 }
 673                 $oldver = wfTimestampNow() . "!{$name}";
 674
 675                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 676                         $wgOut->showFileRenameError( $curfile, "${archive}/{$oldver}" );
 677                         return;
 678                 }
 679                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 680                         $wgOut->showFileCopyError( "${archive}/{$oldimage}", $curfile );
 681                         return;
 682                 }
 683
 684                 # Record upload and update metadata cache
 685                 $img = Image::newFromName( $name );
 686                 $img->recordUpload( $oldver, wfMsg( "reverted" ) );
 687
 688                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 689                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 690                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 691
 692                 $descTitle = $img->getTitle();
 693                 $wgOut->returnToMain( false, $descTitle->getPrefixedText() );
 694         }
 695
 696         function blockedIPpage() {
 697                 $edit = new EditPage( $this );
 698                 return $edit->blockedIPpage();
 699         }
 700
 701         /**
 702          * Override handling of action=purge
 703          */
 704         function doPurge() {
 705                 $this->img = new Image( $this->mTitle );
 706                 if( $this->img->exists() ) {
 707                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 708                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 709                         $update->doUpdate();
 710                         $this->img->purgeCache();
 711                 } else {
 712                         wfDebug( "ImagePage::doPurge no image\n" );
 713                 }
 714                 parent::doPurge();
 715         }
 716
 717 }
 718
 719 /**
 720  * @todo document
 721  */
 722 class ImageHistoryList {
 723         function ImageHistoryList( &$skin ) {
 724                 $this->skin =& $skin;
 725         }
 726
 727         function beginImageHistoryList() {
 728                 $s = "\n" .
 729                         Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'imghistory' ) ) .
 730                         "\n<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 731                 return $s;
 732         }
 733
 734         function endImageHistoryList() {
 735                 $s = "</ul>\n";
 736                 return $s;
 737         }
 738
 739         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description, $width, $height ) {
 740                 global $wgUser, $wgLang, $wgTitle, $wgContLang;
 741
 742                 $datetime = $wgLang->timeanddate( $timestamp, true );
 743                 $del = wfMsgHtml( 'deleteimg' );
 744                 $delall = wfMsgHtml( 'deleteimgcompletely' );
 745                 $cur = wfMsgHtml( 'cur' );
 746
 747                 if ( $iscur ) {
 748                         $url = Image::imageUrl( $img );
 749                         $rlink = $cur;
 750                         if ( $wgUser->isAllowed('delete') ) {
 751                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 752                                   '&action=delete' );
 753                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 754
 755                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 756                         } else {
 757                                 $dlink = $del;
 758                         }
 759                 } else {
 760                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 761                         if( $wgUser->getID() != 0 && $wgTitle->userCan( 'edit' ) ) {
 762                                 $token = urlencode( $wgUser->editToken( $img ) );
 763                                 $rlink = $this->skin->makeKnownLinkObj( $wgTitle,
 764                                            wfMsgHtml( 'revertimg' ), 'action=revert&oldimage=' .
 765                                            urlencode( $img ) . "&wpEditToken=$token" );
 766                                 $dlink = $this->skin->makeKnownLinkObj( $wgTitle,
 767                                            $del, 'action=delete&oldimage=' . urlencode( $img ) .
 768                                            "&wpEditToken=$token" );
 769                         } else {
 770                                 # Having live active links for non-logged in users
 771                                 # means that bots and spiders crawling our site can
 772                                 # inadvertently change content. Baaaad idea.
 773                                 $rlink = wfMsgHtml( 'revertimg' );
 774                                 $dlink = $del;
 775                         }
 776                 }
 777
 778                 $userlink = $this->skin->userLink( $user, $usertext ) . $this->skin->userToolLinks( $user, $usertext );
 779                 $nbytes = wfMsgExt( 'nbytes', array( 'parsemag', 'escape' ),
 780                         $wgLang->formatNum( $size ) );
 781                 $widthheight = wfMsgHtml( 'widthheight', $width, $height );
 782                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 783
 784                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a> . . {$userlink} . . {$widthheight} ({$nbytes})";
 785
 786                 $s .= $this->skin->commentBlock( $description, $wgTitle );
 787                 $s .= "</li>\n";
 788                 return $s;
 789         }
 790
 791 }
 792
 793
 794 ?>