includes/ImagePage.php

   1 <?php
   2 /**
   3  * @package MediaWiki
   4  */
   5
   6 /**
   7  *
   8  */
   9 if( !defined( 'MEDIAWIKI' ) )
  10         die( 1 );
  11
  12 /**
  13  * Special handling for image description pages
  14  * @package MediaWiki
  15  */
  16 class ImagePage extends Article {
  17
  18         /* private */ var $img;  // Image object this page is shown for
  19         var $mExtraDescription = false;
  20
  21         /**
  22          * Handler for action=render
  23          * Include body text only; none of the image extras
  24          */
  25         function render() {
  26                 global $wgOut;
  27                 $wgOut->setArticleBodyOnly( true );
  28                 $wgOut->addSecondaryWikitext( $this->getContent() );
  29         }
  30
  31         function view() {
  32                 global $wgOut, $wgShowEXIF;
  33
  34                 $this->img = new Image( $this->mTitle );
  35
  36                 if( $this->mTitle->getNamespace() == NS_IMAGE  ) {
  37                         if ($wgShowEXIF && $this->img->exists()) {
  38                                 $exif = $this->img->getExifData();
  39                                 $showmeta = count($exif) ? true : false;
  40                         } else {
  41                                 $exif = false;
  42                                 $showmeta = false;
  43                         }
  44
  45                         if ($this->img->exists())
  46                                 $wgOut->addHTML($this->showTOC($showmeta));
  47
  48                         $this->openShowImage();
  49
  50                         # No need to display noarticletext, we use our own message, output in openShowImage()
  51                         if( $this->getID() ) {
  52                                 Article::view();
  53                         } else {
  54                                 # Just need to set the right headers
  55                                 $wgOut->setArticleFlag( true );
  56                                 $wgOut->setRobotpolicy( 'index,follow' );
  57                                 $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  58                                 $this->viewUpdates();
  59                         }
  60
  61                         # Show shared description, if needed
  62                         if( $this->mExtraDescription ) {
  63                                 $fol = wfMsg( 'shareddescriptionfollows' );
  64                                 if( $fol != '-' ) {
  65                                         $wgOut->addWikiText( $fol );
  66                                 }
  67                                 $wgOut->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . '</div>' );
  68                         }
  69
  70                         $this->closeShowImage();
  71                         $this->imageHistory();
  72                         $this->imageLinks();
  73                         if( $exif ) {
  74                                 global $wgStylePath, $wgStyleVersion;
  75                                 $expand = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-expand' ) ) );
  76                                 $collapse = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-collapse' ) ) );
  77                                 $wgOut->addHTML( "<h2 id=\"metadata\">" . wfMsgHtml( 'metadata' ) . "</h2>\n" );
  78                                 $wgOut->addWikiText( $this->makeMetadataTable( $exif ) );
  79                                 $wgOut->addHTML(
  80                                         "<script type=\"text/javascript\" src=\"$wgStylePath/common/metadata.js?wgStyleVersion\"></script>\n" .
  81                                         "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
  82                         }
  83                 } else {
  84                         Article::view();
  85                 }
  86         }
  87
  88         /**
  89          * Create the TOC
  90          *
  91          * @access private
  92          *
  93          * @param bool $metadata Whether or not to show the metadata link
  94          * @return string
  95          */
  96         function showTOC( $metadata ) {
  97                 global $wgLang;
  98                 $r = '<ul id="filetoc">
  99                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>
 100                         <li><a href="#filehistory">' . wfMsgHtml( 'imghistory' ) . '</a></li>
 101                         <li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>' .
 102                         ($metadata ? '<li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>' : '') . '
 103                 </ul>';
 104                 return $r;
 105         }
 106
 107         /**
 108          * Make a table with metadata to be shown in the output page.
 109          *
 110          * @access private
 111          *
 112          * @param array $exif The array containing the EXIF data
 113          * @return string
 114          */
 115         function makeMetadataTable( $exif ) {
 116                 $r = wfMsg( 'metadata-help' ) . "\n\n";
 117                 $r .= "{| id=mw_metadata class=mw_metadata\n";
 118                 $visibleFields = $this->visibleMetadataFields();
 119                 foreach( $exif as $k => $v ) {
 120                         $tag = strtolower( $k );
 121                         $msg = wfMsg( "exif-$tag" );
 122                         $class = "exif-$tag";
 123                         if( !in_array( $tag, $visibleFields ) ) {
 124                                 $class .= ' collapsable';
 125                         }
 126                         $r .= "|- class=\"$class\"\n";
 127                         $r .= "!| $msg\n";
 128                         $r .= "|| $v\n";
 129                 }
 130                 $r .= '|}';
 131                 return $r;
 132         }
 133
 134         /**
 135          * Get a list of EXIF metadata items which should be displayed when
 136          * the metadata table is collapsed.
 137          *
 138          * @return array of strings
 139          * @access private
 140          */
 141         function visibleMetadataFields() {
 142                 $fields = array();
 143                 $lines = explode( "\n", wfMsgForContent( 'metadata-fields' ) );
 144                 foreach( $lines as $line ) {
 145                         if( preg_match( '/^\\*\s*(.*?)\s*$/', $line, $matches ) ) {
 146                                 $fields[] = $matches[1];
 147                         }
 148                 }
 149                 return $fields;
 150         }
 151
 152         /**
 153          * Overloading Article's getContent method.
 154          *
 155          * Omit noarticletext if sharedupload; text will be fetched from the
 156          * shared upload server if possible.
 157          */
 158         function getContent() {
 159                 if( $this->img && $this->img->fromSharedDirectory && 0 == $this->getID() ) {
 160                         return '';
 161                 }
 162                 return Article::getContent();
 163         }
 164
 165         function openShowImage() {
 166                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest, $wgLang;
 167                 global $wgUseImageResize, $wgGenerateThumbnailOnParse;
 168
 169                 $full_url  = $this->img->getURL();
 170                 $anchoropen = '';
 171                 $anchorclose = '';
 172
 173                 if( $wgUser->getOption( 'imagesize' ) == '' ) {
 174                         $sizeSel = User::getDefaultOption( 'imagesize' );
 175                 } else {
 176                         $sizeSel = intval( $wgUser->getOption( 'imagesize' ) );
 177                 }
 178                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 179                         $sizeSel = User::getDefaultOption( 'imagesize' );
 180                 }
 181                 $max = $wgImageLimits[$sizeSel];
 182                 $maxWidth = $max[0];
 183                 $maxHeight = $max[1];
 184                 $sk = $wgUser->getSkin();
 185
 186                 if ( $this->img->exists() ) {
 187                         # image
 188                         $page = $wgRequest->getIntOrNull( 'page' );
 189                         if ( ! is_null( $page ) ) {
 190                                 $this->img->selectPage( $page );
 191                         } else {
 192                                 $page = 1;
 193                         }
 194                         $width = $this->img->getWidth();
 195                         $height = $this->img->getHeight();
 196                         $showLink = false;
 197
 198                         if ( $this->img->allowInlineDisplay() and $width and $height) {
 199                                 # image
 200
 201                                 # "Download high res version" link below the image
 202                                 $msg = wfMsgHtml('showbigimage', $width, $height, intval( $this->img->getSize()/1024 ) );
 203
 204                                 # We'll show a thumbnail of this image
 205                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 206                                         # Calculate the thumbnail size.
 207                                         # First case, the limiting factor is the width, not the height.
 208                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 209                                                 $height = round( $height * $maxWidth / $width);
 210                                                 $width = $maxWidth;
 211                                                 # Note that $height <= $maxHeight now.
 212                                         } else {
 213                                                 $newwidth = floor( $width * $maxHeight / $height);
 214                                                 $height = round( $height * $newwidth / $width );
 215                                                 $width = $newwidth;
 216                                                 # Note that $height <= $maxHeight now, but might not be identical
 217                                                 # because of rounding.
 218                                         }
 219
 220                                         if( $wgUseImageResize ) {
 221                                                 $thumbnail = $this->img->getThumbnail( $width, -1, $wgGenerateThumbnailOnParse );
 222                                                 if ( $thumbnail == null ) {
 223                                                         $url = $this->img->getViewURL();
 224                                                 } else {
 225                                                         $url = $thumbnail->getURL();
 226                                                 }
 227                                         } else {
 228                                                 # No resize ability? Show the full image, but scale
 229                                                 # it down in the browser so it fits on the page.
 230                                                 $url = $this->img->getViewURL();
 231                                         }
 232                                         $anchoropen  = "<a href=\"{$full_url}\">";
 233                                         $anchorclose = "</a><br />";
 234                                         if( $this->img->mustRender() ) {
 235                                                 $showLink = true;
 236                                         } else {
 237                                                 $anchorclose .= "\n$anchoropen{$msg}</a>";
 238                                         }
 239                                 } else {
 240                                         $url = $this->img->getViewURL();
 241                                         $showLink = true;
 242                                 }
 243
 244                                 if ( $this->img->isMultipage() ) {
 245                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 246                                 }
 247
 248                                 $wgOut->addHTML( '<div class="fullImageLink" id="file">' . $anchoropen .
 249                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
 250                                      htmlspecialchars( $wgRequest->getVal( 'image' ) ).'" />' . $anchorclose . '</div>' );
 251
 252                                 if ( $this->img->isMultipage() ) {
 253                                         $count = $this->img->pageCount();
 254
 255                                         if ( $page > 1 ) {
 256                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 257                                                 $link = $sk->makeLinkObj( $this->mTitle, $label, 'page='. ($page-1) );
 258                                                 $this->img->selectPage( $page - 1 );
 259                                                 $thumb1 = $sk->makeThumbLinkObj( $this->img, $link, $label, 'none' );
 260                                         } else {
 261                                                 $thumb1 = '';
 262                                         }
 263
 264                                         if ( $page < $count ) {
 265                                                 $label = wfMsg( 'imgmultipagenext' );
 266                                                 $this->img->selectPage( $page + 1 );
 267                                                 $link = $sk->makeLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 268                                                 $thumb2 = $sk->makeThumbLinkObj( $this->img, $link, $label, 'none' );
 269                                         } else {
 270                                                 $thumb2 = '';
 271                                         }
 272
 273                                         $select = '<form name="pageselector" action="' . $this->img->getEscapeLocalUrl( '' ) . '" method="GET" onchange="document.pageselector.submit();">' ;
 274                                         $select .= $wgOut->parse( wfMsg( 'imgmultigotopre' ), false ) .
 275                                                 ' <select id="pageselector" name="page">';
 276                                         for ( $i=1; $i <= $count; $i++ ) {
 277                                                 $select .= Xml::option( $wgLang->formatNum( $i ), $i,
 278                                                         $i == $page );
 279                                         }
 280                                         $select .= '</select>' . $wgOut->parse( wfMsg( 'imgmultigotopost' ), false ) .
 281                                                 '<input type="submit" value="' .
 282                                                 htmlspecialchars( wfMsg( 'imgmultigo' ) ) . '"></form>';
 283
 284                                         $wgOut->addHTML( '</td><td><div class="multipageimagenavbox">' .
 285                                            "$select<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>" );
 286                                 }
 287                         } else {
 288                                 #if direct link is allowed but it's not a renderable image, show an icon.
 289                                 if ($this->img->isSafeFile()) {
 290                                         $icon= $this->img->iconThumb();
 291
 292                                         $wgOut->addHTML( '<div class="fullImageLink" id="file"><a href="' . $full_url . '">' .
 293                                         $icon->toHtml() .
 294                                         '</a></div>' );
 295                                 }
 296
 297                                 $showLink = true;
 298                         }
 299
 300
 301                         if ($showLink) {
 302                                 $filename = wfEscapeWikiText( $this->img->getName() );
 303                                 $info = wfMsg( 'fileinfo',
 304                                         ceil($this->img->getSize()/1024.0),
 305                                         $this->img->getMimeType() );
 306
 307                                 global $wgContLang;
 308                                 $dirmark = $wgContLang->getDirMark();
 309                                 if (!$this->img->isSafeFile()) {
 310                                         $warning = wfMsg( 'mediawarning' );
 311                                         $wgOut->addWikiText( <<<END
 312 <div class="fullMedia">
 313 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 314 <span class="fileInfo"> ($info)</span>
 315 </div>
 316
 317 <div class="mediaWarning">$warning</div>
 318 END
 319                                                 );
 320                                 } else {
 321                                         $wgOut->addWikiText( <<<END
 322 <div class="fullMedia">
 323 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> ($info)</span>
 324 </div>
 325 END
 326                                                 );
 327                                 }
 328                         }
 329
 330                         if($this->img->fromSharedDirectory) {
 331                                 $this->printSharedImageText();
 332                         }
 333                 } else {
 334                         # Image does not exist
 335
 336                         $title = SpecialPage::getTitleFor( 'Upload' );
 337                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 338                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 339                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 340                 }
 341         }
 342
 343         function printSharedImageText() {
 344                 global $wgRepositoryBaseUrl, $wgFetchCommonsDescriptions, $wgOut, $wgUser;
 345
 346                 $url = $wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey());
 347                 $sharedtext = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml("sharedupload");
 348                 if ($wgRepositoryBaseUrl && !$wgFetchCommonsDescriptions) {
 349
 350                         $sk = $wgUser->getSkin();
 351                         $title = SpecialPage::getTitleFor( 'Upload' );
 352                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('shareduploadwiki-linktext'),
 353                         array( 'wpDestFile' => urlencode( $this->img->getName() )));
 354                         $sharedtext .= " " . wfMsgWikiHtml('shareduploadwiki', $link);
 355                 }
 356                 $sharedtext .= "</div>";
 357                 $wgOut->addHTML($sharedtext);
 358
 359                 if ($wgRepositoryBaseUrl && $wgFetchCommonsDescriptions) {
 360                         $text = Http::get($url . '?action=render');
 361                         if ($text)
 362                                 $this->mExtraDescription = $text;
 363                 }
 364         }
 365
 366         function getUploadUrl() {
 367                 global $wgServer;
 368                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 369                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 370         }
 371
 372         /**
 373          * Print out the various links at the bottom of the image page, e.g. reupload,
 374          * external editing (and instructions link) etc.
 375          */
 376         function uploadLinksBox() {
 377                 global $wgUser, $wgOut;
 378
 379                 if( $this->img->fromSharedDirectory )
 380                         return;
 381
 382                 $sk = $wgUser->getSkin();
 383
 384                 $wgOut->addHtml( '<br /><ul>' );
 385
 386                 # "Upload a new version of this file" link
 387                 if( $wgUser->isAllowed( 'reupload' ) ) {
 388                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 389                         $wgOut->addHtml( "<li><div>{$ulink}</div></li>" );
 390                 }
 391
 392                 # External editing link
 393                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsg( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 394                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 395
 396                 $wgOut->addHtml( '</ul>' );
 397         }
 398
 399         function closeShowImage()
 400         {
 401                 # For overloading
 402
 403         }
 404
 405         /**
 406          * If the page we've just displayed is in the "Image" namespace,
 407          * we follow it with an upload history of the image and its usage.
 408          */
 409         function imageHistory()
 410         {
 411                 global $wgUser, $wgOut, $wgUseExternalEditor;
 412
 413                 $sk = $wgUser->getSkin();
 414
 415                 $line = $this->img->nextHistoryLine();
 416
 417                 if ( $line ) {
 418                         $list = new ImageHistoryList( $sk );
 419                         $s = $list->beginImageHistoryList() .
 420                                 $list->imageHistoryLine( true, wfTimestamp(TS_MW, $line->img_timestamp),
 421                                         $this->mTitle->getDBkey(),  $line->img_user,
 422                                         $line->img_user_text, $line->img_size, $line->img_description,
 423                                         $line->img_width, $line->img_height
 424                                 );
 425
 426                         while ( $line = $this->img->nextHistoryLine() ) {
 427                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 428                                         $line->oi_archive_name, $line->img_user,
 429                                         $line->img_user_text, $line->img_size, $line->img_description,
 430                                         $line->img_width, $line->img_height
 431                                 );
 432                         }
 433                         $s .= $list->endImageHistoryList();
 434                 } else { $s=''; }
 435                 $wgOut->addHTML( $s );
 436
 437                 # Exist check because we don't want to show this on pages where an image
 438                 # doesn't exist along with the noimage message, that would suck. -ævar
 439                 if( $wgUseExternalEditor && $this->img->exists() ) {
 440                         $this->uploadLinksBox();
 441                 }
 442
 443         }
 444
 445         function imageLinks()
 446         {
 447                 global $wgUser, $wgOut;
 448
 449                 $wgOut->addHTML( '<h2 id="filelinks">' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 450
 451                 $dbr =& wfGetDB( DB_SLAVE );
 452                 $page = $dbr->tableName( 'page' );
 453                 $imagelinks = $dbr->tableName( 'imagelinks' );
 454
 455                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 456                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 457                 $sql = $dbr->limitResult($sql, 500, 0);
 458                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 459
 460                 if ( 0 == $dbr->numRows( $res ) ) {
 461                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 462                         return;
 463                 }
 464                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 465
 466                 $sk = $wgUser->getSkin();
 467                 while ( $s = $dbr->fetchObject( $res ) ) {
 468                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 469                         $link = $sk->makeKnownLinkObj( $name, "" );
 470                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 471                 }
 472                 $wgOut->addHTML( "</ul>\n" );
 473         }
 474
 475         function delete()
 476         {
 477                 global $wgUser, $wgOut, $wgRequest;
 478
 479                 $confirm = $wgRequest->wasPosted();
 480                 $reason = $wgRequest->getVal( 'wpReason' );
 481                 $image = $wgRequest->getVal( 'image' );
 482                 $oldimage = $wgRequest->getVal( 'oldimage' );
 483
 484                 # Only sysops can delete images. Previously ordinary users could delete
 485                 # old revisions, but this is no longer the case.
 486                 if ( !$wgUser->isAllowed('delete') ) {
 487                         $wgOut->permissionRequired( 'delete' );
 488                         return;
 489                 }
 490                 if ( $wgUser->isBlocked() ) {
 491                         return $this->blockedIPpage();
 492                 }
 493                 if ( wfReadOnly() ) {
 494                         $wgOut->readOnlyPage();
 495                         return;
 496                 }
 497
 498                 # Better double-check that it hasn't been deleted yet!
 499                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 500                 if ( ( !is_null( $image ) )
 501                   && ( '' == trim( $image ) ) ) {
 502                         $wgOut->showFatalError( wfMsg( 'cannotdelete' ) );
 503                         return;
 504                 }
 505
 506                 $this->img  = new Image( $this->mTitle );
 507
 508                 # Deleting old images doesn't require confirmation
 509                 if ( !is_null( $oldimage ) || $confirm ) {
 510                         if( $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 511                                 $this->doDelete( $reason );
 512                         } else {
 513                                 $wgOut->showFatalError( wfMsg( 'sessionfailure' ) );
 514                         }
 515                         return;
 516                 }
 517
 518                 if ( !is_null( $image ) ) {
 519                         $q = '&image=' . urlencode( $image );
 520                 } else if ( !is_null( $oldimage ) ) {
 521                         $q = '&oldimage=' . urlencode( $oldimage );
 522                 } else {
 523                         $q = '';
 524                 }
 525                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 526         }
 527
 528         /*
 529          * Delete an image.
 530          * @param $reason User provided reason for deletion.
 531          */
 532         function doDelete( $reason ) {
 533                 global $wgOut, $wgRequest, $wgUseSquid;
 534                 global $wgPostCommitUpdateList;
 535
 536                 $fname = 'ImagePage::doDelete';
 537
 538                 $oldimage = $wgRequest->getVal( 'oldimage' );
 539
 540                 $dbw =& wfGetDB( DB_MASTER );
 541
 542                 if ( !is_null( $oldimage ) ) {
 543                         if ( strlen( $oldimage ) < 16 ) {
 544                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 545                                 return;
 546                         }
 547                         if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 548                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 549                                 return;
 550                         }
 551                         if ( !$this->doDeleteOldImage( $oldimage ) ) {
 552                                 return;
 553                         }
 554                         $deleted = $oldimage;
 555                 } else {
 556                         $ok = $this->img->delete( $reason );
 557                         if( !$ok ) {
 558                                 # If the deletion operation actually failed, bug out:
 559                                 $wgOut->showFileDeleteError( $this->img->getName() );
 560                                 return;
 561                         }
 562
 563                         # Image itself is now gone, and database is cleaned.
 564                         # Now we remove the image description page.
 565
 566                         $article = new Article( $this->mTitle );
 567                         $article->doDeleteArticle( $reason ); # ignore errors
 568
 569                         $deleted = $this->img->getName();
 570                 }
 571
 572                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 573                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 574
 575                 $loglink = '[[Special:Log/delete|' . wfMsg( 'deletionlog' ) . ']]';
 576                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 577
 578                 $wgOut->addWikiText( $text );
 579
 580                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 581         }
 582
 583         /**
 584          * @return success
 585          */
 586         function doDeleteOldImage( $oldimage )
 587         {
 588                 global $wgOut;
 589
 590                 $ok = $this->img->deleteOld( $oldimage, '' );
 591                 if( !$ok ) {
 592                         # If we actually have a file and can't delete it, throw an error.
 593                         # Something went awry...
 594                         $wgOut->showFileDeleteError( "$oldimage" );
 595                 } else {
 596                         # Log the deletion
 597                         $log = new LogPage( 'delete' );
 598                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 599                 }
 600                 return $ok;
 601         }
 602
 603         function revert() {
 604                 global $wgOut, $wgRequest, $wgUser;
 605
 606                 $oldimage = $wgRequest->getText( 'oldimage' );
 607                 if ( strlen( $oldimage ) < 16 ) {
 608                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 609                         return;
 610                 }
 611                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 612                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 613                         return;
 614                 }
 615
 616                 if ( wfReadOnly() ) {
 617                         $wgOut->readOnlyPage();
 618                         return;
 619                 }
 620                 if( $wgUser->isAnon() ) {
 621                         $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 622                         return;
 623                 }
 624                 if ( ! $this->mTitle->userCanEdit() ) {
 625                         $wgOut->readOnlyPage( $this->getContent(), true );
 626                         return;
 627                 }
 628                 if ( $wgUser->isBlocked() ) {
 629                         return $this->blockedIPpage();
 630                 }
 631                 if( !$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 632                         $wgOut->showErrorPage( 'internalerror', 'sessionfailure' );
 633                         return;
 634                 }
 635                 $name = substr( $oldimage, 15 );
 636
 637                 $dest = wfImageDir( $name );
 638                 $archive = wfImageArchiveDir( $name );
 639                 $curfile = "{$dest}/{$name}";
 640
 641                 if ( !is_dir( $dest ) ) wfMkdirParents( $dest );
 642                 if ( !is_dir( $archive ) ) wfMkdirParents( $archive );
 643
 644                 if ( ! is_file( $curfile ) ) {
 645                         $wgOut->showFileNotFoundError( htmlspecialchars( $curfile ) );
 646                         return;
 647                 }
 648                 $oldver = wfTimestampNow() . "!{$name}";
 649
 650                 $dbr =& wfGetDB( DB_SLAVE );
 651                 $size = $dbr->selectField( 'oldimage', 'oi_size', array( 'oi_archive_name' => $oldimage )  );
 652
 653                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 654                         $wgOut->showFileRenameError( $curfile, "${archive}/{$oldver}" );
 655                         return;
 656                 }
 657                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 658                         $wgOut->showFileCopyError( "${archive}/{$oldimage}", $curfile );
 659                         return;
 660                 }
 661
 662                 # Record upload and update metadata cache
 663                 $img = Image::newFromName( $name );
 664                 $img->recordUpload( $oldver, wfMsg( "reverted" ) );
 665
 666                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 667                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 668                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 669
 670                 $descTitle = $img->getTitle();
 671                 $wgOut->returnToMain( false, $descTitle->getPrefixedText() );
 672         }
 673
 674         function blockedIPpage() {
 675                 $edit = new EditPage( $this );
 676                 return $edit->blockedIPpage();
 677         }
 678
 679         /**
 680          * Override handling of action=purge
 681          */
 682         function doPurge() {
 683                 $this->img = new Image( $this->mTitle );
 684                 if( $this->img->exists() ) {
 685                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 686                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 687                         $update->doUpdate();
 688                         $this->img->purgeCache();
 689                 } else {
 690                         wfDebug( "ImagePage::doPurge no image\n" );
 691                 }
 692                 parent::doPurge();
 693         }
 694
 695 }
 696
 697 /**
 698  * @todo document
 699  * @package MediaWiki
 700  */
 701 class ImageHistoryList {
 702         function ImageHistoryList( &$skin ) {
 703                 $this->skin =& $skin;
 704         }
 705
 706         function beginImageHistoryList() {
 707                 $s = "\n<h2 id=\"filehistory\">" . wfMsg( 'imghistory' ) . "</h2>\n" .
 708                   "<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 709                 return $s;
 710         }
 711
 712         function endImageHistoryList() {
 713                 $s = "</ul>\n";
 714                 return $s;
 715         }
 716
 717         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description, $width, $height ) {
 718                 global $wgUser, $wgLang, $wgTitle, $wgContLang;
 719
 720                 $datetime = $wgLang->timeanddate( $timestamp, true );
 721                 $del = wfMsg( 'deleteimg' );
 722                 $delall = wfMsg( 'deleteimgcompletely' );
 723                 $cur = wfMsg( 'cur' );
 724
 725                 if ( $iscur ) {
 726                         $url = Image::imageUrl( $img );
 727                         $rlink = $cur;
 728                         if ( $wgUser->isAllowed('delete') ) {
 729                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 730                                   '&action=delete' );
 731                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 732
 733                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 734                         } else {
 735                                 $dlink = $del;
 736                         }
 737                 } else {
 738                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 739                         if( $wgUser->getID() != 0 && $wgTitle->userCanEdit() ) {
 740                                 $token = urlencode( $wgUser->editToken( $img ) );
 741                                 $rlink = $this->skin->makeKnownLinkObj( $wgTitle,
 742                                            wfMsg( 'revertimg' ), 'action=revert&oldimage=' .
 743                                            urlencode( $img ) . "&wpEditToken=$token" );
 744                                 $dlink = $this->skin->makeKnownLinkObj( $wgTitle,
 745                                            $del, 'action=delete&oldimage=' . urlencode( $img ) .
 746                                            "&wpEditToken=$token" );
 747                         } else {
 748                                 # Having live active links for non-logged in users
 749                                 # means that bots and spiders crawling our site can
 750                                 # inadvertently change content. Baaaad idea.
 751                                 $rlink = wfMsg( 'revertimg' );
 752                                 $dlink = $del;
 753                         }
 754                 }
 755
 756                 $userlink = $this->skin->userLink( $user, $usertext ) . $this->skin->userToolLinks( $user, $usertext );
 757                 $nbytes = wfMsgExt( 'nbytes', array( 'parsemag', 'escape' ),
 758                         $wgLang->formatNum( $size ) );
 759                 $widthheight = wfMsg( 'widthheight', $width, $height );
 760                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 761
 762                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a> . . {$userlink} . . {$widthheight} ({$nbytes})";
 763
 764                 $s .= $this->skin->commentBlock( $description, $wgTitle );
 765                 $s .= "</li>\n";
 766                 return $s;
 767         }
 768
 769 }
 770
 771
 772 ?>