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