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