includes/ImagePage.php

   1 <?php
   2 /**
   3  * @package MediaWiki
   4  */
   5
   6 /**
   7  *
   8  */
   9 if( !defined( 'MEDIAWIKI' ) )
  10         die( 1 );
  11
  12 require_once( 'Image.php' );
  13
  14 /**
  15  * Special handling for image description pages
  16  * @package MediaWiki
  17  */
  18 class ImagePage extends Article {
  19
  20         /* private */ var $img;  // Image object this page is shown for
  21         var $mExtraDescription = false;
  22
  23         /**
  24          * Handler for action=render
  25          * Include body text only; none of the image extras
  26          */
  27         function render() {
  28                 global $wgOut;
  29                 $wgOut->setArticleBodyOnly( true );
  30                 $wgOut->addSecondaryWikitext( $this->getContent() );
  31         }
  32
  33         function view() {
  34                 global $wgOut, $wgShowEXIF;
  35
  36                 $this->img = new Image( $this->mTitle );
  37
  38                 if( $this->mTitle->getNamespace() == NS_IMAGE  ) {
  39                         if ($wgShowEXIF && $this->img->exists()) {
  40                                 $exif = $this->img->getExifData();
  41                                 $showmeta = count($exif) ? true : false;
  42                         } else {
  43                                 $exif = false;
  44                                 $showmeta = false;
  45                         }
  46
  47                         if ($this->img->exists())
  48                                 $wgOut->addHTML($this->showTOC($showmeta));
  49
  50                         $this->openShowImage();
  51
  52                         # No need to display noarticletext, we use our own message, output in openShowImage()
  53                         if( $this->getID() ) {
  54                                 Article::view();
  55                         } else {
  56                                 # Just need to set the right headers
  57                                 $wgOut->setArticleFlag( true );
  58                                 $wgOut->setRobotpolicy( 'index,follow' );
  59                                 $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  60                                 $this->viewUpdates();
  61                         }
  62
  63                         # Show shared description, if needed
  64                         if( $this->mExtraDescription ) {
  65                                 $fol = wfMsg( 'shareddescriptionfollows' );
  66                                 if( $fol != '-' ) {
  67                                         $wgOut->addWikiText( $fol );
  68                                 }
  69                                 $wgOut->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . '</div>' );
  70                         }
  71
  72                         $this->closeShowImage();
  73                         $this->imageHistory();
  74                         $this->imageLinks();
  75                         if( $exif ) {
  76                                 global $wgStylePath;
  77                                 $expand = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-expand' ) ) );
  78                                 $collapse = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-collapse' ) ) );
  79                                 $wgOut->addHTML( "<h2 id=\"metadata\">" . wfMsgHtml( 'metadata' ) . "</h2>\n" );
  80                                 $wgOut->addWikiText( $this->makeMetadataTable( $exif ) );
  81                                 $wgOut->addHTML(
  82                                         "<script type=\"text/javascript\" src=\"$wgStylePath/common/metadata.js\"></script>\n" .
  83                                         "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
  84                         }
  85                 } else {
  86                         Article::view();
  87                 }
  88         }
  89
  90         /**
  91          * Create the TOC
  92          *
  93          * @access private
  94          *
  95          * @param bool $metadata Whether or not to show the metadata link
  96          * @return string
  97          */
  98         function showTOC( $metadata ) {
  99                 global $wgLang;
 100                 $r = '<ul id="filetoc">
 101                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>
 102                         <li><a href="#filehistory">' . wfMsgHtml( 'imghistory' ) . '</a></li>
 103                         <li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>' .
 104                         ($metadata ? '<li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>' : '') . '
 105                 </ul>';
 106                 return $r;
 107         }
 108
 109         /**
 110          * Make a table with metadata to be shown in the output page.
 111          *
 112          * @access private
 113          *
 114          * @param array $exif The array containing the EXIF data
 115          * @return string
 116          */
 117         function makeMetadataTable( $exif ) {
 118                 $r = wfMsg( 'metadata-help' ) . "\n\n";
 119                 $r .= "{| id=mw_metadata class=mw_metadata\n";
 120                 $visibleFields = $this->visibleMetadataFields();
 121                 foreach( $exif as $k => $v ) {
 122                         $tag = strtolower( $k );
 123                         $msg = wfMsg( "exif-$tag" );
 124                         $class = "exif-$tag";
 125                         if( !in_array( $tag, $visibleFields ) ) {
 126                                 $class .= ' collapsable';
 127                         }
 128                         $r .= "|- class=\"$class\"\n";
 129                         $r .= "!| $msg\n";
 130                         $r .= "|| $v\n";
 131                 }
 132                 $r .= '|}';
 133                 return $r;
 134         }
 135
 136         /**
 137          * Get a list of EXIF metadata items which should be displayed when
 138          * the metadata table is collapsed.
 139          *
 140          * @return array of strings
 141          * @access private
 142          */
 143         function visibleMetadataFields() {
 144                 $fields = array();
 145                 $lines = explode( "\n", wfMsgForContent( 'metadata-fields' ) );
 146                 foreach( $lines as $line ) {
 147                         if( preg_match( '/^\\*\s*(.*?)\s*$/', $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;
 169                 global $wgUseImageResize, $wgGenerateThumbnailOnParse;
 170
 171                 $full_url  = $this->img->getURL();
 172                 $anchoropen = '';
 173                 $anchorclose = '';
 174
 175                 if( $wgUser->getOption( 'imagesize' ) == '' ) {
 176                         $sizeSel = User::getDefaultOption( 'imagesize' );
 177                 } else {
 178                         $sizeSel = intval( $wgUser->getOption( 'imagesize' ) );
 179                 }
 180                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 181                         $sizeSel = User::getDefaultOption( 'imagesize' );
 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                                 $this->img->selectPage( $page );
 193                         } else {
 194                                 $page = 1;
 195                         }
 196                         $width = $this->img->getWidth();
 197                         $height = $this->img->getHeight();
 198                         $showLink = false;
 199
 200                         if ( $this->img->allowInlineDisplay() and $width and $height) {
 201                                 # image
 202
 203                                 # "Download high res version" link below the image
 204                                 $msg = wfMsgHtml('showbigimage', $width, $height, intval( $this->img->getSize()/1024 ) );
 205
 206                                 # We'll show a thumbnail of this image
 207                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 208                                         # Calculate the thumbnail size.
 209                                         # First case, the limiting factor is the width, not the height.
 210                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 211                                                 $height = round( $height * $maxWidth / $width);
 212                                                 $width = $maxWidth;
 213                                                 # Note that $height <= $maxHeight now.
 214                                         } else {
 215                                                 $newwidth = floor( $width * $maxHeight / $height);
 216                                                 $height = round( $height * $newwidth / $width );
 217                                                 $width = $newwidth;
 218                                                 # Note that $height <= $maxHeight now, but might not be identical
 219                                                 # because of rounding.
 220                                         }
 221
 222                                         if( $wgUseImageResize ) {
 223                                                 $thumbnail = $this->img->getThumbnail( $width, -1, $wgGenerateThumbnailOnParse );
 224                                                 if ( $thumbnail == null ) {
 225                                                         $url = $this->img->getViewURL();
 226                                                 } else {
 227                                                         $url = $thumbnail->getURL();
 228                                                 }
 229                                         } else {
 230                                                 # No resize ability? Show the full image, but scale
 231                                                 # it down in the browser so it fits on the page.
 232                                                 $url = $this->img->getViewURL();
 233                                         }
 234                                         $anchoropen  = "<a href=\"{$full_url}\">";
 235                                         $anchorclose = "</a><br />";
 236                                         if( $this->img->mustRender() ) {
 237                                                 $showLink = true;
 238                                         } else {
 239                                                 $anchorclose .= "\n$anchoropen{$msg}</a>";
 240                                         }
 241                                 } else {
 242                                         $url = $this->img->getViewURL();
 243                                         $showLink = true;
 244                                 }
 245
 246                                 if ( $this->img->isMultipage() ) {
 247                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 248                                 }
 249
 250                                 $wgOut->addHTML( '<div class="fullImageLink" id="file">' . $anchoropen .
 251                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
 252                                      htmlspecialchars( $wgRequest->getVal( 'image' ) ).'" />' . $anchorclose . '</div>' );
 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                                                 $this->img->selectPage( $page - 1 );
 261                                                 $thumb1 = $sk->makeThumbLinkObj( $this->img, $link, $label, 'none' );
 262                                         } else {
 263                                                 $thumb1 = '';
 264                                         }
 265
 266                                         if ( $page < $count ) {
 267                                                 $label = wfMsg( 'imgmultipagenext' );
 268                                                 $this->img->selectPage( $page + 1 );
 269                                                 $link = $sk->makeLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 270                                                 $thumb2 = $sk->makeThumbLinkObj( $this->img, $link, $label, 'none' );
 271                                         } else {
 272                                                 $thumb2 = '';
 273                                         }
 274
 275                                         $select = '<form name="pageselector" action="' . $this->img->getEscapeLocalUrl( '' ) . '" method="GET" onchange="document.pageselector.submit();">' ;
 276                                         $select .= $wgOut->parse( wfMsg( 'imgmultigotopre' ), false ) .
 277                                                 ' <select id="pageselector" name="page">';
 278                                         for ( $i=1; $i <= $count; $i++ ) {
 279                                                 if ( $i == $page ) {
 280                                                         $select .= "<option value=\"$i\" selected=\"selected\">$i</option>";
 281                                                 } else {
 282                                                         $select .= "<option value=\"$i\" >$i</option>\n";
 283                                                 }
 284                                         }
 285                                         $select .= '</select>' . $wgOut->parse( wfMsg( 'imgmultigotopost' ), false ) .
 286                                                 '<input type="submit" value="' .
 287                                                 htmlspecialchars( wfMsg( 'imgmultigo' ) ) . '"></form>';
 288
 289                                         $wgOut->addHTML( '</td><td><div class="multipageimagenavbox">' .
 290                                            "$select<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>" );
 291                                 }
 292                         } else {
 293                                 #if direct link is allowed but it's not a renderable image, show an icon.
 294                                 if ($this->img->isSafeFile()) {
 295                                         $icon= $this->img->iconThumb();
 296
 297                                         $wgOut->addHTML( '<div class="fullImageLink" id="file"><a href="' . $full_url . '">' .
 298                                         $icon->toHtml() .
 299                                         '</a></div>' );
 300                                 }
 301
 302                                 $showLink = true;
 303                         }
 304
 305
 306                         if ($showLink) {
 307                                 $filename = wfEscapeWikiText( $this->img->getName() );
 308                                 $info = wfMsg( 'fileinfo',
 309                                         ceil($this->img->getSize()/1024.0),
 310                                         $this->img->getMimeType() );
 311
 312                                 global $wgContLang;
 313                                 $dirmark = $wgContLang->getDirMark();
 314                                 if (!$this->img->isSafeFile()) {
 315                                         $warning = wfMsg( 'mediawarning' );
 316                                         $wgOut->addWikiText( <<<END
 317 <div class="fullMedia">
 318 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 319 <span class="fileInfo"> ($info)</span>
 320 </div>
 321
 322 <div class="mediaWarning">$warning</div>
 323 END
 324                                                 );
 325                                 } else {
 326                                         $wgOut->addWikiText( <<<END
 327 <div class="fullMedia">
 328 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> ($info)</span>
 329 </div>
 330 END
 331                                                 );
 332                                 }
 333                         }
 334
 335                         if($this->img->fromSharedDirectory) {
 336                                 $this->printSharedImageText();
 337                         }
 338                 } else {
 339                         # Image does not exist
 340
 341                         $title = Title::makeTitle( NS_SPECIAL, 'Upload' );
 342                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 343                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 344                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 345                 }
 346         }
 347
 348         function printSharedImageText() {
 349                 global $wgRepositoryBaseUrl, $wgFetchCommonsDescriptions, $wgOut, $wgUser;
 350
 351                 $url = $wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey());
 352                 $sharedtext = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml("sharedupload");
 353                 if ($wgRepositoryBaseUrl && !$wgFetchCommonsDescriptions) {
 354
 355                         $sk = $wgUser->getSkin();
 356                         $title = Title::makeTitle( NS_SPECIAL, 'Upload' );
 357                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('shareduploadwiki-linktext'),
 358                         array( 'wpDestFile' => urlencode( $this->img->getName() )));
 359                         $sharedtext .= " " . wfMsgWikiHtml('shareduploadwiki', $link);
 360                 }
 361                 $sharedtext .= "</div>";
 362                 $wgOut->addHTML($sharedtext);
 363
 364                 if ($wgRepositoryBaseUrl && $wgFetchCommonsDescriptions) {
 365                         require_once("HttpFunctions.php");
 366                         $ur = ini_set('allow_url_fopen', true);
 367                         $text = wfGetHTTP($url . '?action=render');
 368                         ini_set('allow_url_fopen', $ur);
 369                         if ($text)
 370                                 $this->mExtraDescription = $text;
 371                 }
 372         }
 373
 374         function getUploadUrl() {
 375                 global $wgServer;
 376                 $uploadTitle = Title::makeTitle( NS_SPECIAL, 'Upload' );
 377                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 378         }
 379
 380         /**
 381          * Print out the various links at the bottom of the image page, e.g. reupload,
 382          * external editing (and instructions link) etc.
 383          */
 384         function uploadLinksBox() {
 385                 global $wgUser, $wgOut;
 386
 387                 if( $this->img->fromSharedDirectory )
 388                         return;
 389
 390                 $sk = $wgUser->getSkin();
 391
 392                 $wgOut->addHtml( '<br /><ul>' );
 393
 394                 # "Upload a new version of this file" link
 395                 if( $wgUser->isAllowed( 'reupload' ) ) {
 396                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 397                         $wgOut->addHtml( "<li><div>{$ulink}</div></li>" );
 398                 }
 399
 400                 # External editing link
 401                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsg( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 402                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 403
 404                 $wgOut->addHtml( '</ul>' );
 405         }
 406
 407         function closeShowImage()
 408         {
 409                 # For overloading
 410
 411         }
 412
 413         /**
 414          * If the page we've just displayed is in the "Image" namespace,
 415          * we follow it with an upload history of the image and its usage.
 416          */
 417         function imageHistory()
 418         {
 419                 global $wgUser, $wgOut, $wgUseExternalEditor;
 420
 421                 $sk = $wgUser->getSkin();
 422
 423                 $line = $this->img->nextHistoryLine();
 424
 425                 if ( $line ) {
 426                         $list = new ImageHistoryList( $sk );
 427                         $s = $list->beginImageHistoryList() .
 428                                 $list->imageHistoryLine( true, wfTimestamp(TS_MW, $line->img_timestamp),
 429                                         $this->mTitle->getDBkey(),  $line->img_user,
 430                                         $line->img_user_text, $line->img_size, $line->img_description,
 431                                         $line->img_width, $line->img_height
 432                                 );
 433
 434                         while ( $line = $this->img->nextHistoryLine() ) {
 435                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 436                                         $line->oi_archive_name, $line->img_user,
 437                                         $line->img_user_text, $line->img_size, $line->img_description,
 438                                         $line->img_width, $line->img_height
 439                                 );
 440                         }
 441                         $s .= $list->endImageHistoryList();
 442                 } else { $s=''; }
 443                 $wgOut->addHTML( $s );
 444
 445                 # Exist check because we don't want to show this on pages where an image
 446                 # doesn't exist along with the noimage message, that would suck. -ævar
 447                 if( $wgUseExternalEditor && $this->img->exists() ) {
 448                         $this->uploadLinksBox();
 449                 }
 450
 451         }
 452
 453         function imageLinks()
 454         {
 455                 global $wgUser, $wgOut;
 456
 457                 $wgOut->addHTML( '<h2 id="filelinks">' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 458
 459                 $dbr =& wfGetDB( DB_SLAVE );
 460                 $page = $dbr->tableName( 'page' );
 461                 $imagelinks = $dbr->tableName( 'imagelinks' );
 462
 463                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 464                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 465                 $sql = $dbr->limitResult($sql, 500, 0);
 466                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 467
 468                 if ( 0 == $dbr->numRows( $res ) ) {
 469                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 470                         return;
 471                 }
 472                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 473
 474                 $sk = $wgUser->getSkin();
 475                 while ( $s = $dbr->fetchObject( $res ) ) {
 476                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 477                         $link = $sk->makeKnownLinkObj( $name, "" );
 478                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 479                 }
 480                 $wgOut->addHTML( "</ul>\n" );
 481         }
 482
 483         function delete()
 484         {
 485                 global $wgUser, $wgOut, $wgRequest;
 486
 487                 $confirm = $wgRequest->wasPosted();
 488                 $reason = $wgRequest->getVal( 'wpReason' );
 489                 $image = $wgRequest->getVal( 'image' );
 490                 $oldimage = $wgRequest->getVal( 'oldimage' );
 491
 492                 # Only sysops can delete images. Previously ordinary users could delete
 493                 # old revisions, but this is no longer the case.
 494                 if ( !$wgUser->isAllowed('delete') ) {
 495                         $wgOut->permissionRequired( 'delete' );
 496                         return;
 497                 }
 498                 if ( $wgUser->isBlocked() ) {
 499                         return $this->blockedIPpage();
 500                 }
 501                 if ( wfReadOnly() ) {
 502                         $wgOut->readOnlyPage();
 503                         return;
 504                 }
 505
 506                 # Better double-check that it hasn't been deleted yet!
 507                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 508                 if ( ( !is_null( $image ) )
 509                   && ( '' == trim( $image ) ) ) {
 510                         $wgOut->showFatalError( wfMsg( 'cannotdelete' ) );
 511                         return;
 512                 }
 513
 514                 $this->img  = new Image( $this->mTitle );
 515
 516                 # Deleting old images doesn't require confirmation
 517                 if ( !is_null( $oldimage ) || $confirm ) {
 518                         if( $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 519                                 $this->doDelete( $reason );
 520                         } else {
 521                                 $wgOut->showFatalError( wfMsg( 'sessionfailure' ) );
 522                         }
 523                         return;
 524                 }
 525
 526                 if ( !is_null( $image ) ) {
 527                         $q = '&image=' . urlencode( $image );
 528                 } else if ( !is_null( $oldimage ) ) {
 529                         $q = '&oldimage=' . urlencode( $oldimage );
 530                 } else {
 531                         $q = '';
 532                 }
 533                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 534         }
 535
 536         /*
 537          * Delete an image.
 538          * @param $reason User provided reason for deletion.
 539          */
 540         function doDelete( $reason ) {
 541                 global $wgOut, $wgRequest, $wgUseSquid;
 542                 global $wgPostCommitUpdateList;
 543
 544                 $fname = 'ImagePage::doDelete';
 545
 546                 $oldimage = $wgRequest->getVal( 'oldimage' );
 547
 548                 $dbw =& wfGetDB( DB_MASTER );
 549
 550                 if ( !is_null( $oldimage ) ) {
 551                         if ( strlen( $oldimage ) < 16 ) {
 552                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 553                                 return;
 554                         }
 555                         if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 556                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 557                                 return;
 558                         }
 559                         if ( !$this->doDeleteOldImage( $oldimage ) ) {
 560                                 return;
 561                         }
 562                         $deleted = $oldimage;
 563                 } else {
 564                         $ok = $this->img->delete( $reason );
 565                         if( !$ok ) {
 566                                 # If the deletion operation actually failed, bug out:
 567                                 $wgOut->showFileDeleteError( $this->img->getName() );
 568                                 return;
 569                         }
 570
 571                         # Image itself is now gone, and database is cleaned.
 572                         # Now we remove the image description page.
 573
 574                         $article = new Article( $this->mTitle );
 575                         $article->doDeleteArticle( $reason ); # ignore errors
 576
 577                         $deleted = $this->img->getName();
 578                 }
 579
 580                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 581                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 582
 583                 $loglink = '[[Special:Log/delete|' . wfMsg( 'deletionlog' ) . ']]';
 584                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 585
 586                 $wgOut->addWikiText( $text );
 587
 588                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 589         }
 590
 591         /**
 592          * @return success
 593          */
 594         function doDeleteOldImage( $oldimage )
 595         {
 596                 global $wgOut;
 597
 598                 $ok = $this->img->deleteOld( $oldimage, '' );
 599                 if( !$ok ) {
 600                         # If we actually have a file and can't delete it, throw an error.
 601                         # Something went awry...
 602                         $wgOut->showFileDeleteError( "$oldimage" );
 603                 } else {
 604                         # Log the deletion
 605                         $log = new LogPage( 'delete' );
 606                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 607                 }
 608                 return $ok;
 609         }
 610
 611         function revert() {
 612                 global $wgOut, $wgRequest, $wgUser;
 613
 614                 $oldimage = $wgRequest->getText( 'oldimage' );
 615                 if ( strlen( $oldimage ) < 16 ) {
 616                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 617                         return;
 618                 }
 619                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 620                         $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 621                         return;
 622                 }
 623
 624                 if ( wfReadOnly() ) {
 625                         $wgOut->readOnlyPage();
 626                         return;
 627                 }
 628                 if( $wgUser->isAnon() ) {
 629                         $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
 630                         return;
 631                 }
 632                 if ( ! $this->mTitle->userCanEdit() ) {
 633                         $wgOut->readOnlyPage( $this->getContent(), true );
 634                         return;
 635                 }
 636                 if ( $wgUser->isBlocked() ) {
 637                         return $this->blockedIPpage();
 638                 }
 639                 if( !$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 640                         $wgOut->showErrorPage( 'internalerror', 'sessionfailure' );
 641                         return;
 642                 }
 643                 $name = substr( $oldimage, 15 );
 644
 645                 $dest = wfImageDir( $name );
 646                 $archive = wfImageArchiveDir( $name );
 647                 $curfile = "{$dest}/{$name}";
 648
 649                 if ( !is_dir( $dest ) ) wfMkdirParents( $dest );
 650                 if ( !is_dir( $archive ) ) wfMkdirParents( $archive );
 651
 652                 if ( ! is_file( $curfile ) ) {
 653                         $wgOut->showFileNotFoundError( htmlspecialchars( $curfile ) );
 654                         return;
 655                 }
 656                 $oldver = wfTimestampNow() . "!{$name}";
 657
 658                 $dbr =& wfGetDB( DB_SLAVE );
 659                 $size = $dbr->selectField( 'oldimage', 'oi_size', array( 'oi_archive_name' => $oldimage )  );
 660
 661                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 662                         $wgOut->showFileRenameError( $curfile, "${archive}/{$oldver}" );
 663                         return;
 664                 }
 665                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 666                         $wgOut->showFileCopyError( "${archive}/{$oldimage}", $curfile );
 667                         return;
 668                 }
 669
 670                 # Record upload and update metadata cache
 671                 $img = Image::newFromName( $name );
 672                 $img->recordUpload( $oldver, wfMsg( "reverted" ) );
 673
 674                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 675                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 676                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 677
 678                 $descTitle = $img->getTitle();
 679                 $wgOut->returnToMain( false, $descTitle->getPrefixedText() );
 680         }
 681
 682         function blockedIPpage() {
 683                 $edit = new EditPage( $this );
 684                 return $edit->blockedIPpage();
 685         }
 686
 687         /**
 688          * Override handling of action=purge
 689          */
 690         function doPurge() {
 691                 $this->img = new Image( $this->mTitle );
 692                 if( $this->img->exists() ) {
 693                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 694                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 695                         $update->doUpdate();
 696                         $this->img->purgeCache();
 697                 } else {
 698                         wfDebug( "ImagePage::doPurge no image\n" );
 699                 }
 700                 parent::doPurge();
 701         }
 702
 703 }
 704
 705 /**
 706  * @todo document
 707  * @package MediaWiki
 708  */
 709 class ImageHistoryList {
 710         function ImageHistoryList( &$skin ) {
 711                 $this->skin =& $skin;
 712         }
 713
 714         function beginImageHistoryList() {
 715                 $s = "\n<h2 id=\"filehistory\">" . wfMsg( 'imghistory' ) . "</h2>\n" .
 716                   "<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 717                 return $s;
 718         }
 719
 720         function endImageHistoryList() {
 721                 $s = "</ul>\n";
 722                 return $s;
 723         }
 724
 725         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description, $width, $height ) {
 726                 global $wgUser, $wgLang, $wgTitle, $wgContLang;
 727
 728                 $datetime = $wgLang->timeanddate( $timestamp, true );
 729                 $del = wfMsg( 'deleteimg' );
 730                 $delall = wfMsg( 'deleteimgcompletely' );
 731                 $cur = wfMsg( 'cur' );
 732
 733                 if ( $iscur ) {
 734                         $url = Image::imageUrl( $img );
 735                         $rlink = $cur;
 736                         if ( $wgUser->isAllowed('delete') ) {
 737                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 738                                   '&action=delete' );
 739                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 740
 741                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 742                         } else {
 743                                 $dlink = $del;
 744                         }
 745                 } else {
 746                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 747                         if( $wgUser->getID() != 0 && $wgTitle->userCanEdit() ) {
 748                                 $token = urlencode( $wgUser->editToken( $img ) );
 749                                 $rlink = $this->skin->makeKnownLinkObj( $wgTitle,
 750                                            wfMsg( 'revertimg' ), 'action=revert&oldimage=' .
 751                                            urlencode( $img ) . "&wpEditToken=$token" );
 752                                 $dlink = $this->skin->makeKnownLinkObj( $wgTitle,
 753                                            $del, 'action=delete&oldimage=' . urlencode( $img ) .
 754                                            "&wpEditToken=$token" );
 755                         } else {
 756                                 # Having live active links for non-logged in users
 757                                 # means that bots and spiders crawling our site can
 758                                 # inadvertently change content. Baaaad idea.
 759                                 $rlink = wfMsg( 'revertimg' );
 760                                 $dlink = $del;
 761                         }
 762                 }
 763
 764                 $userlink = $this->skin->userLink( $user, $usertext ) . $this->skin->userToolLinks( $user, $usertext );
 765                 $nbytes = wfMsgExt( 'nbytes', array( 'parsemag', 'escape' ),
 766                         $wgLang->formatNum( $size ) );
 767                 $widthheight = wfMsg( 'widthheight', $width, $height );
 768                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 769
 770                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a> . . {$userlink} . . {$widthheight} ({$nbytes})";
 771
 772                 $s .= $this->skin->commentBlock( $description, $wgTitle );
 773                 $s .= "</li>\n";
 774                 return $s;
 775         }
 776
 777 }
 778
 779
 780 ?>