includes/ImagePage.php

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