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