includes/filerepo/LocalFile.php

   1 <?php
   2 /**
   3  */
   4
   5 /**
   6  * Bump this number when serialized cache records may be incompatible.
   7  */
   8 define( 'MW_FILE_VERSION', 4 );
   9
  10 /**
  11  * Class to represent a local file in the wiki's own database
  12  *
  13  * Provides methods to retrieve paths (physical, logical, URL),
  14  * to generate image thumbnails or for uploading.
  15  *
  16  * @addtogroup FileRepo
  17  */
  18 class LocalFile extends File
  19 {
  20         /**#@+
  21          * @private
  22          */
  23         var     $fileExists,    # does the file file exist on disk? (loadFromXxx)
  24                 $historyLine,   # Number of line to return by nextHistoryLine() (constructor)
  25                 $historyRes,    # result of the query for the file's history (nextHistoryLine)
  26                 $width,         # \
  27                 $height,        #  |
  28                 $bits,          #   --- returned by getimagesize (loadFromXxx)
  29                 $attr,          # /
  30                 $media_type,    # MEDIATYPE_xxx (bitmap, drawing, audio...)
  31                 $mime,          # MIME type, determined by MimeMagic::guessMimeType
  32                 $major_mime,    # Major mime type
  33                 $minor_mine,    # Minor mime type
  34                 $size,          # Size in bytes (loadFromXxx)
  35                 $metadata,      # Metadata
  36                 $timestamp,     # Upload timestamp
  37                 $dataLoaded,    # Whether or not all this has been loaded from the database (loadFromXxx)
  38                 $upgraded;      # Whether the row was upgraded on load
  39
  40         /**#@-*/
  41
  42         function newFromTitle( $title, $repo ) {
  43                 return new self( $title, $repo );
  44         }
  45
  46         function newFromRow( $row, $repo ) {
  47                 $title = Title::makeTitle( NS_IMAGE, $row->img_name );
  48                 $file = new self( $title, $repo );
  49                 $file->loadFromRow( $row );
  50                 return $file;
  51         }
  52
  53         function __construct( $title, $repo ) {
  54                 if( !is_object( $title ) ) {
  55                         throw new MWException( __CLASS__.' constructor given bogus title.' );
  56                 }
  57                 parent::__construct( $title, $repo );
  58                 $this->metadata = '';
  59                 $this->historyLine = 0;
  60                 $this->dataLoaded = false;
  61         }
  62
  63         /**
  64          * Get the memcached key
  65          */
  66         function getCacheKey() {
  67                 $hashedName = md5($this->getName());
  68                 return wfMemcKey( 'file', $hashedName );
  69         }
  70
  71         /**
  72          * Try to load file metadata from memcached. Returns true on success.
  73          */
  74         function loadFromCache() {
  75                 global $wgMemc;
  76                 wfProfileIn( __METHOD__ );
  77                 $this->dataLoaded = false;
  78                 $key = $this->getCacheKey();
  79                 if ( !$key ) {
  80                         return false;
  81                 }
  82                 $cachedValues = $wgMemc->get( $key );
  83
  84                 // Check if the key existed and belongs to this version of MediaWiki
  85                 if ( isset($cachedValues['version']) && ( $cachedValues['version'] == MW_FILE_VERSION ) ) {
  86                         wfDebug( "Pulling file metadata from cache key $key\n" );
  87                         $this->fileExists = $cachedValues['fileExists'];
  88                         if ( $this->fileExists ) {
  89                                 unset( $cachedValues['version'] );
  90                                 unset( $cachedValues['fileExists'] );
  91                                 foreach ( $cachedValues as $name => $value ) {
  92                                         $this->$name = $value;
  93                                 }
  94                         }
  95                 }
  96                 if ( $this->dataLoaded ) {
  97                         wfIncrStats( 'image_cache_hit' );
  98                 } else {
  99                         wfIncrStats( 'image_cache_miss' );
 100                 }
 101
 102                 wfProfileOut( __METHOD__ );
 103                 return $this->dataLoaded;
 104         }
 105
 106         /**
 107          * Save the file metadata to memcached
 108          */
 109         function saveToCache() {
 110                 global $wgMemc;
 111                 $this->load();
 112                 $key = $this->getCacheKey();
 113                 if ( !$key ) {
 114                         return;
 115                 }
 116                 $fields = $this->getCacheFields( '' );
 117                 $cache = array( 'version' => MW_FILE_VERSION );
 118                 $cache['fileExists'] = $this->fileExists;
 119                 if ( $this->fileExists ) {
 120                         foreach ( $fields as $field ) {
 121                                 $cache[$field] = $this->$field;
 122                         }
 123                 }
 124
 125                 $wgMemc->set( $key, $cache, 60 * 60 * 24 * 7 ); // A week
 126         }
 127
 128         /**
 129          * Load metadata from the file itself
 130          */
 131         function loadFromFile() {
 132                 wfProfileIn( __METHOD__ );
 133                 $path = $this->getPath();
 134                 $this->fileExists = file_exists( $path );
 135                 $gis = array();
 136
 137                 if ( $this->fileExists ) {
 138                         $magic=& MimeMagic::singleton();
 139
 140                         $this->mime = $magic->guessMimeType($path,true);
 141                         list( $this->major_mime, $this->minor_mime ) = self::splitMime( $this->mime );
 142                         $this->media_type = $magic->getMediaType($path,$this->mime);
 143                         $handler = MediaHandler::getHandler( $this->mime );
 144
 145                         # Get size in bytes
 146                         $this->size = filesize( $path );
 147
 148                         # Height, width and metadata
 149                         if ( $handler ) {
 150                                 $gis = $handler->getImageSize( $this, $path );
 151                                 $this->metadata = $handler->getMetadata( $this, $path );
 152                         } else {
 153                                 $gis = false;
 154                                 $this->metadata = '';
 155                         }
 156
 157                         wfDebug(__METHOD__.": $path loaded, {$this->size} bytes, {$this->mime}.\n");
 158                 } else {
 159                         $this->mime = NULL;
 160                         $this->media_type = MEDIATYPE_UNKNOWN;
 161                         $this->metadata = '';
 162                         wfDebug(__METHOD__.": $path NOT FOUND!\n");
 163                 }
 164
 165                 if( $gis ) {
 166                         $this->width = $gis[0];
 167                         $this->height = $gis[1];
 168                 } else {
 169                         $this->width = 0;
 170                         $this->height = 0;
 171                 }
 172
 173                 #NOTE: $gis[2] contains a code for the image type. This is no longer used.
 174
 175                 #NOTE: we have to set this flag early to avoid load() to be called
 176                 # be some of the functions below. This may lead to recursion or other bad things!
 177                 # as ther's only one thread of execution, this should be safe anyway.
 178                 $this->dataLoaded = true;
 179
 180                 if ( isset( $gis['bits'] ) )  $this->bits = $gis['bits'];
 181                 else $this->bits = 0;
 182
 183                 wfProfileOut( __METHOD__ );
 184         }
 185
 186         function getCacheFields( $prefix = 'img_' ) {
 187                 static $fields = array( 'size', 'width', 'height', 'bits', 'media_type',
 188                         'major_mime', 'minor_mime', 'metadata', 'timestamp' );
 189                 static $results = array();
 190                 if ( $prefix == '' ) {
 191                         return $fields;
 192                 }
 193                 if ( !isset( $results[$prefix] ) ) {
 194                         $prefixedFields = array();
 195                         foreach ( $fields as $field ) {
 196                                 $prefixedFields[] = $prefix . $field;
 197                         }
 198                         $results[$prefix] = $prefixedFields;
 199                 }
 200                 return $results[$prefix];
 201         }
 202
 203         /**
 204          * Load file metadata from the DB
 205          */
 206         function loadFromDB() {
 207                 wfProfileIn( __METHOD__ );
 208
 209                 # Unconditionally set loaded=true, we don't want the accessors constantly rechecking
 210                 $this->dataLoaded = true;
 211
 212                 $dbr = $this->repo->getSlaveDB();
 213
 214                 $row = $dbr->selectRow( 'image', $this->getCacheFields( 'img_' ),
 215                         array( 'img_name' => $this->getName() ), __METHOD__ );
 216                 if ( $row ) {
 217                         $this->loadFromRow( $row );
 218                 } else {
 219                         $this->fileExists = false;
 220                 }
 221
 222                 wfProfileOut( __METHOD__ );
 223         }
 224
 225         /**
 226          * Decode a row from the database (either object or array) to an array
 227          * with timestamps and MIME types decoded, and the field prefix removed.
 228          */
 229         function decodeRow( $row, $prefix = 'img_' ) {
 230                 $array = (array)$row;
 231                 $prefixLength = strlen( $prefix );
 232                 // Sanity check prefix once
 233                 if ( substr( key( $array ), 0, $prefixLength ) !== $prefix ) {
 234                         throw new MWException( __METHOD__. ': incorrect $prefix parameter' );
 235                 }
 236                 $decoded = array();
 237                 foreach ( $array as $name => $value ) {
 238                         $deprefixedName = substr( $name, $prefixLength );
 239                         $decoded[substr( $name, $prefixLength )] = $value;
 240                 }
 241                 $decoded['timestamp'] = wfTimestamp( TS_MW, $decoded['timestamp'] );
 242                 if ( empty( $decoded['major_mime'] ) ) {
 243                         $decoded['mime'] = "unknown/unknown";
 244                 } else {
 245                         if (!$decoded['minor_mime']) {
 246                                 $decoded['minor_mime'] = "unknown";
 247                         }
 248                         $decoded['mime'] = $decoded['major_mime'].'/'.$decoded['minor_mime'];
 249                 }
 250                 return $decoded;
 251         }
 252
 253         /*
 254          * Load file metadata from a DB result row
 255          */
 256         function loadFromRow( $row, $prefix = 'img_' ) {
 257                 $array = $this->decodeRow( $row, $prefix );
 258                 foreach ( $array as $name => $value ) {
 259                         $this->$name = $value;
 260                 }
 261                 $this->fileExists = true;
 262                 // Check for rows from a previous schema, quietly upgrade them
 263                 $this->maybeUpgradeRow();
 264         }
 265
 266         /**
 267          * Load file metadata from cache or DB, unless already loaded
 268          */
 269         function load() {
 270                 if ( !$this->dataLoaded ) {
 271                         if ( !$this->loadFromCache() ) {
 272                                 $this->loadFromDB();
 273                                 $this->saveToCache();
 274                         }
 275                         $this->dataLoaded = true;
 276                 }
 277         }
 278
 279         /**
 280          * Upgrade a row if it needs it
 281          */
 282         function maybeUpgradeRow() {
 283                 if ( wfReadOnly() ) {
 284                         return;
 285                 }
 286                 if ( is_null($this->media_type) || $this->mime == 'image/svg' ) {
 287                         $this->upgradeRow();
 288                         $this->upgraded = true;
 289                 } else {
 290                         $handler = $this->getHandler();
 291                         if ( $handler && !$handler->isMetadataValid( $this, $this->metadata ) ) {
 292                                 $this->upgradeRow();
 293                                 $this->upgraded = true;
 294                         }
 295                 }
 296         }
 297
 298         function getUpgraded() {
 299                 return $this->upgraded;
 300         }
 301
 302         /**
 303          * Fix assorted version-related problems with the image row by reloading it from the file
 304          */
 305         function upgradeRow() {
 306                 wfProfileIn( __METHOD__ );
 307
 308                 $this->loadFromFile();
 309
 310                 $dbw = $this->repo->getMasterDB();
 311                 list( $major, $minor ) = self::splitMime( $this->mime );
 312
 313                 wfDebug(__METHOD__.': upgrading '.$this->getName()." to the current schema\n");
 314
 315                 $dbw->update( 'image',
 316                         array(
 317                                 'img_width' => $this->width,
 318                                 'img_height' => $this->height,
 319                                 'img_bits' => $this->bits,
 320                                 'img_media_type' => $this->media_type,
 321                                 'img_major_mime' => $major,
 322                                 'img_minor_mime' => $minor,
 323                                 'img_metadata' => $this->metadata,
 324                         ), array( 'img_name' => $this->getName() ),
 325                         __METHOD__
 326                 );
 327                 $this->saveToCache();
 328                 wfProfileOut( __METHOD__ );
 329         }
 330
 331         /** splitMime inherited */
 332         /** getName inherited */
 333         /** getTitle inherited */
 334         /** getURL inherited */
 335         /** getViewURL inherited */
 336         /** getPath inherited */
 337
 338         /**
 339          * Return the width of the image
 340          *
 341          * Returns false on error
 342          * @public
 343          */
 344         function getWidth( $page = 1 ) {
 345                 $this->load();
 346                 if ( $this->isMultipage() ) {
 347                         $dim = $this->getHandler()->getPageDimensions( $this, $page );
 348                         if ( $dim ) {
 349                                 return $dim['width'];
 350                         } else {
 351                                 return false;
 352                         }
 353                 } else {
 354                         return $this->width;
 355                 }
 356         }
 357
 358         /**
 359          * Return the height of the image
 360          *
 361          * Returns false on error
 362          * @public
 363          */
 364         function getHeight( $page = 1 ) {
 365                 $this->load();
 366                 if ( $this->isMultipage() ) {
 367                         $dim = $this->getHandler()->getPageDimensions( $this, $page );
 368                         if ( $dim ) {
 369                                 return $dim['height'];
 370                         } else {
 371                                 return false;
 372                         }
 373                 } else {
 374                         return $this->height;
 375                 }
 376         }
 377
 378         /**
 379          * Get handler-specific metadata
 380          */
 381         function getMetadata() {
 382                 $this->load();
 383                 return $this->metadata;
 384         }
 385
 386         /**
 387          * Return the size of the image file, in bytes
 388          * @public
 389          */
 390         function getSize() {
 391                 $this->load();
 392                 return $this->size;
 393         }
 394
 395         /**
 396          * Returns the mime type of the file.
 397          */
 398         function getMimeType() {
 399                 $this->load();
 400                 return $this->mime;
 401         }
 402
 403         /**
 404          * Return the type of the media in the file.
 405          * Use the value returned by this function with the MEDIATYPE_xxx constants.
 406          */
 407         function getMediaType() {
 408                 $this->load();
 409                 return $this->media_type;
 410         }
 411
 412         /** canRender inherited */
 413         /** mustRender inherited */
 414         /** allowInlineDisplay inherited */
 415         /** isSafeFile inherited */
 416         /** isTrustedFile inherited */
 417
 418         /**
 419          * Returns true if the file file exists on disk.
 420          * @return boolean Whether file file exist on disk.
 421          * @public
 422          */
 423         function exists() {
 424                 $this->load();
 425                 return $this->fileExists;
 426         }
 427
 428         /** getTransformScript inherited */
 429         /** getUnscaledThumb inherited */
 430         /** thumbName inherited */
 431         /** createThumb inherited */
 432         /** getThumbnail inherited */
 433         /** transform inherited */
 434
 435         /**
 436          * Fix thumbnail files from 1.4 or before, with extreme prejudice
 437          */
 438         function migrateThumbFile( $thumbName ) {
 439                 $thumbDir = $this->getThumbPath();
 440                 $thumbPath = "$thumbDir/$thumbName";
 441                 if ( is_dir( $thumbPath ) ) {
 442                         // Directory where file should be
 443                         // This happened occasionally due to broken migration code in 1.5
 444                         // Rename to broken-*
 445                         for ( $i = 0; $i < 100 ; $i++ ) {
 446                                 $broken = $this->repo->getZonePath('public') . "/broken-$i-$thumbName";
 447                                 if ( !file_exists( $broken ) ) {
 448                                         rename( $thumbPath, $broken );
 449                                         break;
 450                                 }
 451                         }
 452                         // Doesn't exist anymore
 453                         clearstatcache();
 454                 }
 455                 if ( is_file( $thumbDir ) ) {
 456                         // File where directory should be
 457                         unlink( $thumbDir );
 458                         // Doesn't exist anymore
 459                         clearstatcache();
 460                 }
 461         }
 462
 463         /** getHandler inherited */
 464         /** iconThumb inherited */
 465         /** getLastError inherited */
 466
 467         /**
 468          * Get all thumbnail names previously generated for this file
 469          */
 470         function getThumbnails() {
 471                 if ( $this->isHashed() ) {
 472                         $this->load();
 473                         $files = array();
 474                         $dir = $this->getThumbPath();
 475
 476                         if ( is_dir( $dir ) ) {
 477                                 $handle = opendir( $dir );
 478
 479                                 if ( $handle ) {
 480                                         while ( false !== ( $file = readdir($handle) ) ) {
 481                                                 if ( $file{0} != '.' ) {
 482                                                         $files[] = $file;
 483                                                 }
 484                                         }
 485                                         closedir( $handle );
 486                                 }
 487                         }
 488                 } else {
 489                         $files = array();
 490                 }
 491
 492                 return $files;
 493         }
 494
 495         /**
 496          * Refresh metadata in memcached, but don't touch thumbnails or squid
 497          */
 498         function purgeMetadataCache() {
 499                 clearstatcache();
 500                 $this->loadFromFile();
 501                 $this->saveToCache();
 502         }
 503
 504         /**
 505          * Delete all previously generated thumbnails, refresh metadata in memcached and purge the squid
 506          */
 507         function purgeCache( $archiveFiles = array() ) {
 508                 global $wgUseSquid;
 509
 510                 // Refresh metadata cache
 511                 $this->purgeMetadataCache();
 512
 513                 // Delete thumbnails
 514                 $files = $this->getThumbnails();
 515                 $dir = $this->getThumbPath();
 516                 $urls = array();
 517                 foreach ( $files as $file ) {
 518                         $m = array();
 519                         # Check that the base file name is part of the thumb name
 520                         # This is a basic sanity check to avoid erasing unrelated directories
 521                         if ( strpos( $file, $this->getName() ) !== false ) {
 522                                 $url = $this->getThumbUrl( $file );
 523                                 $urls[] = $url;
 524                                 @unlink( "$dir/$file" );
 525                         }
 526                 }
 527
 528                 // Purge the squid
 529                 if ( $wgUseSquid ) {
 530                         $urls[] = $this->getURL();
 531                         foreach ( $archiveFiles as $file ) {
 532                                 $urls[] = $this->getArchiveUrl( $file );
 533                         }
 534                         wfPurgeSquidServers( $urls );
 535                 }
 536         }
 537
 538         /** purgeDescription inherited */
 539         /** purgeEverything inherited */
 540
 541         /**
 542          * Return the history of this file, line by line.
 543          * starts with current version, then old versions.
 544          * uses $this->historyLine to check which line to return:
 545          *  0      return line for current version
 546          *  1      query for old versions, return first one
 547          *  2, ... return next old version from above query
 548          *
 549          * @public
 550          */
 551         function nextHistoryLine() {
 552                 $dbr = $this->repo->getSlaveDB();
 553
 554                 if ( $this->historyLine == 0 ) {// called for the first time, return line from cur
 555                         $this->historyRes = $dbr->select( 'image',
 556                                 array(
 557                                         'img_size',
 558                                         'img_description',
 559                                         'img_user','img_user_text',
 560                                         'img_timestamp',
 561                                         'img_width',
 562                                         'img_height',
 563                                         "'' AS oi_archive_name"
 564                                 ),
 565                                 array( 'img_name' => $this->title->getDBkey() ),
 566                                 __METHOD__
 567                         );
 568                         if ( 0 == $dbr->numRows( $this->historyRes ) ) {
 569                                 return FALSE;
 570                         }
 571                 } else if ( $this->historyLine == 1 ) {
 572                         $this->historyRes = $dbr->select( 'oldimage',
 573                                 array(
 574                                         'oi_size AS img_size',
 575                                         'oi_description AS img_description',
 576                                         'oi_user AS img_user',
 577                                         'oi_user_text AS img_user_text',
 578                                         'oi_timestamp AS img_timestamp',
 579                                         'oi_width as img_width',
 580                                         'oi_height as img_height',
 581                                         'oi_archive_name'
 582                                 ),
 583                                 array( 'oi_name' => $this->title->getDBkey() ),
 584                                 __METHOD__,
 585                                 array( 'ORDER BY' => 'oi_timestamp DESC' )
 586                         );
 587                 }
 588                 $this->historyLine ++;
 589
 590                 return $dbr->fetchObject( $this->historyRes );
 591         }
 592
 593         /**
 594          * Reset the history pointer to the first element of the history
 595          * @public
 596          */
 597         function resetHistory() {
 598                 $this->historyLine = 0;
 599         }
 600
 601         /** getFullPath inherited */
 602         /** getHashPath inherited */
 603         /** getRel inherited */
 604         /** getUrlRel inherited */
 605         /** getArchivePath inherited */
 606         /** getThumbPath inherited */
 607         /** getArchiveUrl inherited */
 608         /** getThumbUrl inherited */
 609         /** getArchiveVirtualUrl inherited */
 610         /** getThumbVirtualUrl inherited */
 611         /** isHashed inherited */
 612
 613         /**
 614          * Record a file upload in the upload log and the image table
 615          */
 616         function recordUpload( $oldver, $desc, $license = '', $copyStatus = '', $source = '',
 617                 $watch = false, $timestamp = false )
 618         {
 619                 global $wgUser, $wgUseCopyrightUpload;
 620
 621                 $dbw = $this->repo->getMasterDB();
 622
 623                 // Delete thumbnails and refresh the metadata cache
 624                 $this->purgeCache();
 625
 626                 // Fail now if the file isn't there
 627                 if ( !$this->fileExists ) {
 628                         wfDebug( __METHOD__.": File ".$this->getPath()." went missing!\n" );
 629                         return false;
 630                 }
 631
 632                 if ( $wgUseCopyrightUpload ) {
 633                         if ( $license != '' ) {
 634                                 $licensetxt = '== ' . wfMsgForContent( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
 635                         }
 636                         $textdesc = '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $desc . "\n" .
 637                           '== ' . wfMsgForContent ( 'filestatus' ) . " ==\n" . $copyStatus . "\n" .
 638                           "$licensetxt" .
 639                           '== ' . wfMsgForContent ( 'filesource' ) . " ==\n" . $source ;
 640                 } else {
 641                         if ( $license != '' ) {
 642                                 $filedesc = $desc == '' ? '' : '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $desc . "\n";
 643                                  $textdesc = $filedesc .
 644                                          '== ' . wfMsgForContent ( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
 645                         } else {
 646                                 $textdesc = $desc;
 647                         }
 648                 }
 649
 650                 if ( $timestamp === false ) {
 651                         $timestamp = $dbw->timestamp();
 652                 }
 653
 654                 #split mime type
 655                 if (strpos($this->mime,'/')!==false) {
 656                         list($major,$minor)= explode('/',$this->mime,2);
 657                 }
 658                 else {
 659                         $major= $this->mime;
 660                         $minor= "unknown";
 661                 }
 662
 663                 # Test to see if the row exists using INSERT IGNORE
 664                 # This avoids race conditions by locking the row until the commit, and also
 665                 # doesn't deadlock. SELECT FOR UPDATE causes a deadlock for every race condition.
 666                 $dbw->insert( 'image',
 667                         array(
 668                                 'img_name' => $this->getName(),
 669                                 'img_size'=> $this->size,
 670                                 'img_width' => intval( $this->width ),
 671                                 'img_height' => intval( $this->height ),
 672                                 'img_bits' => $this->bits,
 673                                 'img_media_type' => $this->media_type,
 674                                 'img_major_mime' => $major,
 675                                 'img_minor_mime' => $minor,
 676                                 'img_timestamp' => $timestamp,
 677                                 'img_description' => $desc,
 678                                 'img_user' => $wgUser->getID(),
 679                                 'img_user_text' => $wgUser->getName(),
 680                                 'img_metadata' => $this->metadata,
 681                         ),
 682                         __METHOD__,
 683                         'IGNORE'
 684                 );
 685
 686                 if( $dbw->affectedRows() == 0 ) {
 687                         # Collision, this is an update of a file
 688                         # Insert previous contents into oldimage
 689                         $dbw->insertSelect( 'oldimage', 'image',
 690                                 array(
 691                                         'oi_name' => 'img_name',
 692                                         'oi_archive_name' => $dbw->addQuotes( $oldver ),
 693                                         'oi_size' => 'img_size',
 694                                         'oi_width' => 'img_width',
 695                                         'oi_height' => 'img_height',
 696                                         'oi_bits' => 'img_bits',
 697                                         'oi_timestamp' => 'img_timestamp',
 698                                         'oi_description' => 'img_description',
 699                                         'oi_user' => 'img_user',
 700                                         'oi_user_text' => 'img_user_text',
 701                                 ), array( 'img_name' => $this->getName() ), __METHOD__
 702                         );
 703
 704                         # Update the current image row
 705                         $dbw->update( 'image',
 706                                 array( /* SET */
 707                                         'img_size' => $this->size,
 708                                         'img_width' => intval( $this->width ),
 709                                         'img_height' => intval( $this->height ),
 710                                         'img_bits' => $this->bits,
 711                                         'img_media_type' => $this->media_type,
 712                                         'img_major_mime' => $major,
 713                                         'img_minor_mime' => $minor,
 714                                         'img_timestamp' => $timestamp,
 715                                         'img_description' => $desc,
 716                                         'img_user' => $wgUser->getID(),
 717                                         'img_user_text' => $wgUser->getName(),
 718                                         'img_metadata' => $this->metadata,
 719                                 ), array( /* WHERE */
 720                                         'img_name' => $this->getName()
 721                                 ), __METHOD__
 722                         );
 723                 } else {
 724                         # This is a new file
 725                         # Update the image count
 726                         $site_stats = $dbw->tableName( 'site_stats' );
 727                         $dbw->query( "UPDATE $site_stats SET ss_images=ss_images+1", __METHOD__ );
 728                 }
 729
 730                 $descTitle = $this->getTitle();
 731                 $article = new Article( $descTitle );
 732                 $minor = false;
 733                 $watch = $watch || $wgUser->isWatched( $descTitle );
 734                 $suppressRC = true; // There's already a log entry, so don't double the RC load
 735
 736                 if( $descTitle->exists() ) {
 737                         // TODO: insert a null revision into the page history for this update.
 738                         if( $watch ) {
 739                                 $wgUser->addWatch( $descTitle );
 740                         }
 741
 742                         # Invalidate the cache for the description page
 743                         $descTitle->invalidateCache();
 744                         $descTitle->purgeSquid();
 745                 } else {
 746                         // New file; create the description page.
 747                         $article->insertNewArticle( $textdesc, $desc, $minor, $watch, $suppressRC );
 748                 }
 749
 750                 # Hooks, hooks, the magic of hooks...
 751                 wfRunHooks( 'FileUpload', array( $this ) );
 752
 753                 # Add the log entry
 754                 $log = new LogPage( 'upload' );
 755                 $log->addEntry( 'upload', $descTitle, $desc );
 756
 757                 # Commit the transaction now, in case something goes wrong later
 758                 # The most important thing is that files don't get lost, especially archives
 759                 $dbw->immediateCommit();
 760
 761                 # Invalidate cache for all pages using this file
 762                 $update = new HTMLCacheUpdate( $this->getTitle(), 'imagelinks' );
 763                 $update->doUpdate();
 764
 765                 return true;
 766         }
 767
 768         /**
 769          * Move or copy a file to its public location. If a file exists at the
 770          * destination, move it to an archive. Returns the archive name on success
 771          * or an empty string if it was a new file, and a wikitext-formatted
 772          * WikiError object on failure.
 773          *
 774          * The archive name should be passed through to recordUpload for database
 775          * registration.
 776          *
 777          * @param string $sourcePath Local filesystem path to the source image
 778          * @param integer $flags A bitwise combination of:
 779          *     File::DELETE_SOURCE    Delete the source file, i.e. move
 780          *         rather than copy
 781          * @return The archive name on success or an empty string if it was a new
 782          *     file, and a wikitext-formatted WikiError object on failure.
 783          */
 784         function publish( $srcPath, $flags = 0 ) {
 785                 $dstPath = $this->getFullPath();
 786                 $archiveName = gmdate( 'YmdHis' ) . '!'. $this->getName();
 787                 $archivePath = $this->getArchivePath( $archiveName );
 788                 $flags = $flags & File::DELETE_SOURCE ? LocalRepo::DELETE_SOURCE : 0;
 789                 $status = $this->repo->publish( $srcPath, $dstPath, $archivePath, $flags );
 790                 if ( WikiError::isError( $status ) ) {
 791                         return $status;
 792                 } elseif ( $status == 'new' ) {
 793                         return '';
 794                 } else {
 795                         return $archiveName;
 796                 }
 797         }
 798
 799         /** getLinksTo inherited */
 800         /** getExifData inherited */
 801         /** isLocal inherited */
 802         /** wasDeleted inherited */
 803
 804         /**
 805          * Delete all versions of the file.
 806          *
 807          * Moves the files into an archive directory (or deletes them)
 808          * and removes the database rows.
 809          *
 810          * Cache purging is done; logging is caller's responsibility.
 811          *
 812          * @param $reason
 813          * @return true on success, false on some kind of failure
 814          */
 815         function delete( $reason, $suppress=false ) {
 816                 $transaction = new FSTransaction();
 817                 $urlArr = array( $this->getURL() );
 818
 819                 if( !FileStore::lock() ) {
 820                         wfDebug( __METHOD__.": failed to acquire file store lock, aborting\n" );
 821                         return false;
 822                 }
 823
 824                 try {
 825                         $dbw = $this->repo->getMasterDB();
 826                         $dbw->begin();
 827
 828                         // Delete old versions
 829                         $result = $dbw->select( 'oldimage',
 830                                 array( 'oi_archive_name' ),
 831                                 array( 'oi_name' => $this->getName() ) );
 832
 833                         while( $row = $dbw->fetchObject( $result ) ) {
 834                                 $oldName = $row->oi_archive_name;
 835
 836                                 $transaction->add( $this->prepareDeleteOld( $oldName, $reason, $suppress ) );
 837
 838                                 // We'll need to purge this URL from caches...
 839                                 $urlArr[] = $this->getArchiveUrl( $oldName );
 840                         }
 841                         $dbw->freeResult( $result );
 842
 843                         // And the current version...
 844                         $transaction->add( $this->prepareDeleteCurrent( $reason, $suppress ) );
 845
 846                         $dbw->immediateCommit();
 847                 } catch( MWException $e ) {
 848                         wfDebug( __METHOD__.": db error, rolling back file transactions\n" );
 849                         $transaction->rollback();
 850                         FileStore::unlock();
 851                         throw $e;
 852                 }
 853
 854                 wfDebug( __METHOD__.": deleted db items, applying file transactions\n" );
 855                 $transaction->commit();
 856                 FileStore::unlock();
 857
 858
 859                 // Update site_stats
 860                 $site_stats = $dbw->tableName( 'site_stats' );
 861                 $dbw->query( "UPDATE $site_stats SET ss_images=ss_images-1", __METHOD__ );
 862
 863                 $this->purgeEverything( $urlArr );
 864
 865                 return true;
 866         }
 867
 868
 869         /**
 870          * Delete an old version of the file.
 871          *
 872          * Moves the file into an archive directory (or deletes it)
 873          * and removes the database row.
 874          *
 875          * Cache purging is done; logging is caller's responsibility.
 876          *
 877          * @param $reason
 878          * @throws MWException or FSException on database or filestore failure
 879          * @return true on success, false on some kind of failure
 880          */
 881         function deleteOld( $archiveName, $reason, $suppress=false ) {
 882                 $transaction = new FSTransaction();
 883                 $urlArr = array();
 884
 885                 if( !FileStore::lock() ) {
 886                         wfDebug( __METHOD__.": failed to acquire file store lock, aborting\n" );
 887                         return false;
 888                 }
 889
 890                 $transaction = new FSTransaction();
 891                 try {
 892                         $dbw = $this->repo->getMasterDB();
 893                         $dbw->begin();
 894                         $transaction->add( $this->prepareDeleteOld( $archiveName, $reason, $suppress ) );
 895                         $dbw->immediateCommit();
 896                 } catch( MWException $e ) {
 897                         wfDebug( __METHOD__.": db error, rolling back file transaction\n" );
 898                         $transaction->rollback();
 899                         FileStore::unlock();
 900                         throw $e;
 901                 }
 902
 903                 wfDebug( __METHOD__.": deleted db items, applying file transaction\n" );
 904                 $transaction->commit();
 905                 FileStore::unlock();
 906
 907                 $this->purgeDescription();
 908
 909                 // Squid purging
 910                 global $wgUseSquid;
 911                 if ( $wgUseSquid ) {
 912                         $urlArr = array(
 913                                 $this->getArchiveUrl( $archiveName ),
 914                         );
 915                         wfPurgeSquidServers( $urlArr );
 916                 }
 917                 return true;
 918         }
 919
 920         /**
 921          * Delete the current version of a file.
 922          * May throw a database error.
 923          * @return true on success, false on failure
 924          */
 925         private function prepareDeleteCurrent( $reason, $suppress=false ) {
 926                 return $this->prepareDeleteVersion(
 927                         $this->getFullPath(),
 928                         $reason,
 929                         'image',
 930                         array(
 931                                 'fa_name'         => 'img_name',
 932                                 'fa_archive_name' => 'NULL',
 933                                 'fa_size'         => 'img_size',
 934                                 'fa_width'        => 'img_width',
 935                                 'fa_height'       => 'img_height',
 936                                 'fa_metadata'     => 'img_metadata',
 937                                 'fa_bits'         => 'img_bits',
 938                                 'fa_media_type'   => 'img_media_type',
 939                                 'fa_major_mime'   => 'img_major_mime',
 940                                 'fa_minor_mime'   => 'img_minor_mime',
 941                                 'fa_description'  => 'img_description',
 942                                 'fa_user'         => 'img_user',
 943                                 'fa_user_text'    => 'img_user_text',
 944                                 'fa_timestamp'    => 'img_timestamp' ),
 945                         array( 'img_name' => $this->getName() ),
 946                         $suppress,
 947                         __METHOD__ );
 948         }
 949
 950         /**
 951          * Delete a given older version of a file.
 952          * May throw a database error.
 953          * @return true on success, false on failure
 954          */
 955         private function prepareDeleteOld( $archiveName, $reason, $suppress=false ) {
 956                 $oldpath = $this->getArchivePath() .
 957                         DIRECTORY_SEPARATOR . $archiveName;
 958                 return $this->prepareDeleteVersion(
 959                         $oldpath,
 960                         $reason,
 961                         'oldimage',
 962                         array(
 963                                 'fa_name'         => 'oi_name',
 964                                 'fa_archive_name' => 'oi_archive_name',
 965                                 'fa_size'         => 'oi_size',
 966                                 'fa_width'        => 'oi_width',
 967                                 'fa_height'       => 'oi_height',
 968                                 'fa_metadata'     => 'NULL',
 969                                 'fa_bits'         => 'oi_bits',
 970                                 'fa_media_type'   => 'NULL',
 971                                 'fa_major_mime'   => 'NULL',
 972                                 'fa_minor_mime'   => 'NULL',
 973                                 'fa_description'  => 'oi_description',
 974                                 'fa_user'         => 'oi_user',
 975                                 'fa_user_text'    => 'oi_user_text',
 976                                 'fa_timestamp'    => 'oi_timestamp' ),
 977                         array(
 978                                 'oi_name' => $this->getName(),
 979                                 'oi_archive_name' => $archiveName ),
 980                         $suppress,
 981                         __METHOD__ );
 982         }
 983
 984         /**
 985          * Do the dirty work of backing up an image row and its file
 986          * (if $wgSaveDeletedFiles is on) and removing the originals.
 987          *
 988          * Must be run while the file store is locked and a database
 989          * transaction is open to avoid race conditions.
 990          *
 991          * @return FSTransaction
 992          */
 993         private function prepareDeleteVersion( $path, $reason, $table, $fieldMap, $where, $suppress=false, $fname ) {
 994                 global $wgUser, $wgSaveDeletedFiles;
 995
 996                 // Dupe the file into the file store
 997                 if( file_exists( $path ) ) {
 998                         if( $wgSaveDeletedFiles ) {
 999                                 $group = 'deleted';
1000
1001                                 $store = FileStore::get( $group );
1002                                 $key = FileStore::calculateKey( $path, $this->getExtension() );
1003                                 $transaction = $store->insert( $key, $path,
1004                                         FileStore::DELETE_ORIGINAL );
1005                         } else {
1006                                 $group = null;
1007                                 $key = null;
1008                                 $transaction = FileStore::deleteFile( $path );
1009                         }
1010                 } else {
1011                         wfDebug( __METHOD__." deleting already-missing '$path'; moving on to database\n" );
1012                         $group = null;
1013                         $key = null;
1014                         $transaction = new FSTransaction(); // empty
1015                 }
1016
1017                 if( $transaction === false ) {
1018                         // Fail to restore?
1019                         wfDebug( __METHOD__.": import to file store failed, aborting\n" );
1020                         throw new MWException( "Could not archive and delete file $path" );
1021                         return false;
1022                 }
1023
1024                 // Bitfields to further supress the file content
1025                 // Note that currently, live files are stored elsewhere
1026                 // and cannot be partially deleted
1027                 $bitfield = 0;
1028                 if ( $suppress ) {
1029                         $bitfield |= self::DELETED_FILE;
1030                         $bitfield |= self::DELETED_COMMENT;
1031                         $bitfield |= self::DELETED_USER;
1032                         $bitfield |= self::DELETED_RESTRICTED;
1033                 }
1034
1035                 $dbw = $this->repo->getMasterDB();
1036                 $storageMap = array(
1037                         'fa_storage_group' => $dbw->addQuotes( $group ),
1038                         'fa_storage_key'   => $dbw->addQuotes( $key ),
1039
1040                         'fa_deleted_user'      => $dbw->addQuotes( $wgUser->getId() ),
1041                         'fa_deleted_timestamp' => $dbw->timestamp(),
1042                         'fa_deleted_reason'    => $dbw->addQuotes( $reason ),
1043                         'fa_deleted'               => $bitfield);
1044                 $allFields = array_merge( $storageMap, $fieldMap );
1045
1046                 try {
1047                         if( $wgSaveDeletedFiles ) {
1048                                 $dbw->insertSelect( 'filearchive', $table, $allFields, $where, $fname );
1049                         }
1050                         $dbw->delete( $table, $where, $fname );
1051                 } catch( DBQueryError $e ) {
1052                         // Something went horribly wrong!
1053                         // Leave the file as it was...
1054                         wfDebug( __METHOD__.": database error, rolling back file transaction\n" );
1055                         $transaction->rollback();
1056                         throw $e;
1057                 }
1058
1059                 return $transaction;
1060         }
1061
1062         /**
1063          * Restore all or specified deleted revisions to the given file.
1064          * Permissions and logging are left to the caller.
1065          *
1066          * May throw database exceptions on error.
1067          *
1068          * @param $versions set of record ids of deleted items to restore,
1069          *                    or empty to restore all revisions.
1070          * @return the number of file revisions restored if successful,
1071          *         or false on failure
1072          */
1073         function restore( $versions=array(), $Unsuppress=false ) {
1074                 global $wgUser;
1075
1076                 if( !FileStore::lock() ) {
1077                         wfDebug( __METHOD__." could not acquire filestore lock\n" );
1078                         return false;
1079                 }
1080
1081                 $transaction = new FSTransaction();
1082                 try {
1083                         $dbw = $this->repo->getMasterDB();
1084                         $dbw->begin();
1085
1086                         // Re-confirm whether this file presently exists;
1087                         // if no we'll need to create an file record for the
1088                         // first item we restore.
1089                         $exists = $dbw->selectField( 'image', '1',
1090                                 array( 'img_name' => $this->getName() ),
1091                                 __METHOD__ );
1092
1093                         // Fetch all or selected archived revisions for the file,
1094                         // sorted from the most recent to the oldest.
1095                         $conditions = array( 'fa_name' => $this->getName() );
1096                         if( $versions ) {
1097                                 $conditions['fa_id'] = $versions;
1098                         }
1099
1100                         $result = $dbw->select( 'filearchive', '*',
1101                                 $conditions,
1102                                 __METHOD__,
1103                                 array( 'ORDER BY' => 'fa_timestamp DESC' ) );
1104
1105                         if( $dbw->numRows( $result ) < count( $versions ) ) {
1106                                 // There's some kind of conflict or confusion;
1107                                 // we can't restore everything we were asked to.
1108                                 wfDebug( __METHOD__.": couldn't find requested items\n" );
1109                                 $dbw->rollback();
1110                                 FileStore::unlock();
1111                                 return false;
1112                         }
1113
1114                         if( $dbw->numRows( $result ) == 0 ) {
1115                                 // Nothing to do.
1116                                 wfDebug( __METHOD__.": nothing to do\n" );
1117                                 $dbw->rollback();
1118                                 FileStore::unlock();
1119                                 return true;
1120                         }
1121
1122                         $revisions = 0;
1123                         while( $row = $dbw->fetchObject( $result ) ) {
1124                                 if ( $Unsuppress ) {
1125                                 // Currently, fa_deleted flags fall off upon restore, lets be careful about this
1126                                 } else if ( ($row->fa_deleted & Revision::DELETED_RESTRICTED) && !$wgUser->isAllowed('hiderevision') ) {
1127                                 // Skip restoring file revisions that the user cannot restore
1128                                         continue;
1129                                 }
1130                                 $revisions++;
1131                                 $store = FileStore::get( $row->fa_storage_group );
1132                                 if( !$store ) {
1133                                         wfDebug( __METHOD__.": skipping row with no file.\n" );
1134                                         continue;
1135                                 }
1136
1137                                 $restoredImage = new self( $row->fa_name, $this->repo );
1138
1139                                 if( $revisions == 1 && !$exists ) {
1140                                         $destPath = $restoredImage->getFullPath();
1141                                         $destDir = dirname( $destPath );
1142                                         if ( !is_dir( $destDir ) ) {
1143                                                 wfMkdirParents( $destDir );
1144                                         }
1145
1146                                         // We may have to fill in data if this was originally
1147                                         // an archived file revision.
1148                                         if( is_null( $row->fa_metadata ) ) {
1149                                                 $tempFile = $store->filePath( $row->fa_storage_key );
1150
1151                                                 $magic = MimeMagic::singleton();
1152                                                 $mime = $magic->guessMimeType( $tempFile, true );
1153                                                 $media_type = $magic->getMediaType( $tempFile, $mime );
1154                                                 list( $major_mime, $minor_mime ) = self::splitMime( $mime );
1155                                                 $handler = MediaHandler::getHandler( $mime );
1156                                                 if ( $handler ) {
1157                                                         $metadata = $handler->getMetadata( false, $tempFile );
1158                                                 } else {
1159                                                         $metadata = '';
1160                                                 }
1161                                         } else {
1162                                                 $metadata   = $row->fa_metadata;
1163                                                 $major_mime = $row->fa_major_mime;
1164                                                 $minor_mime = $row->fa_minor_mime;
1165                                                 $media_type = $row->fa_media_type;
1166                                         }
1167
1168                                         $table = 'image';
1169                                         $fields = array(
1170                                                 'img_name'        => $row->fa_name,
1171                                                 'img_size'        => $row->fa_size,
1172                                                 'img_width'       => $row->fa_width,
1173                                                 'img_height'      => $row->fa_height,
1174                                                 'img_metadata'    => $metadata,
1175                                                 'img_bits'        => $row->fa_bits,
1176                                                 'img_media_type'  => $media_type,
1177                                                 'img_major_mime'  => $major_mime,
1178                                                 'img_minor_mime'  => $minor_mime,
1179                                                 'img_description' => $row->fa_description,
1180                                                 'img_user'        => $row->fa_user,
1181                                                 'img_user_text'   => $row->fa_user_text,
1182                                                 'img_timestamp'   => $row->fa_timestamp );
1183                                 } else {
1184                                         $archiveName = $row->fa_archive_name;
1185                                         if( $archiveName == '' ) {
1186                                                 // This was originally a current version; we
1187                                                 // have to devise a new archive name for it.
1188                                                 // Format is <timestamp of archiving>!<name>
1189                                                 $archiveName =
1190                                                         wfTimestamp( TS_MW, $row->fa_deleted_timestamp ) .
1191                                                         '!' . $row->fa_name;
1192                                         }
1193                                         $restoredImage = new self( $row->fa_name, $this->repo );
1194                                         $destDir = $restoredImage->getArchivePath();
1195                                         if ( !is_dir( $destDir ) ) {
1196                                                 wfMkdirParents( $destDir );
1197                                         }
1198                                         $destPath = $destDir . DIRECTORY_SEPARATOR . $archiveName;
1199
1200                                         $table = 'oldimage';
1201                                         $fields = array(
1202                                                 'oi_name'         => $row->fa_name,
1203                                                 'oi_archive_name' => $archiveName,
1204                                                 'oi_size'         => $row->fa_size,
1205                                                 'oi_width'        => $row->fa_width,
1206                                                 'oi_height'       => $row->fa_height,
1207                                                 'oi_bits'         => $row->fa_bits,
1208                                                 'oi_description'  => $row->fa_description,
1209                                                 'oi_user'         => $row->fa_user,
1210                                                 'oi_user_text'    => $row->fa_user_text,
1211                                                 'oi_timestamp'    => $row->fa_timestamp );
1212                                 }
1213
1214                                 $dbw->insert( $table, $fields, __METHOD__ );
1215                                 // @todo this delete is not totally safe, potentially
1216                                 $dbw->delete( 'filearchive',
1217                                         array( 'fa_id' => $row->fa_id ),
1218                                         __METHOD__ );
1219
1220                                 // Check if any other stored revisions use this file;
1221                                 // if so, we shouldn't remove the file from the deletion
1222                                 // archives so they will still work.
1223                                 $useCount = $dbw->selectField( 'filearchive',
1224                                         'COUNT(*)',
1225                                         array(
1226                                                 'fa_storage_group' => $row->fa_storage_group,
1227                                                 'fa_storage_key'   => $row->fa_storage_key ),
1228                                         __METHOD__ );
1229                                 if( $useCount == 0 ) {
1230                                         wfDebug( __METHOD__.": nothing else using {$row->fa_storage_key}, will deleting after\n" );
1231                                         $flags = FileStore::DELETE_ORIGINAL;
1232                                 } else {
1233                                         $flags = 0;
1234                                 }
1235
1236                                 $transaction->add( $store->export( $row->fa_storage_key,
1237                                         $destPath, $flags ) );
1238                         }
1239
1240                         $dbw->immediateCommit();
1241                 } catch( MWException $e ) {
1242                         wfDebug( __METHOD__." caught error, aborting\n" );
1243                         $transaction->rollback();
1244                         throw $e;
1245                 }
1246
1247                 $transaction->commit();
1248                 FileStore::unlock();
1249
1250                 if( $revisions > 0 ) {
1251                         if( !$exists ) {
1252                                 wfDebug( __METHOD__." restored $revisions items, creating a new current\n" );
1253
1254                                 // Update site_stats
1255                                 $site_stats = $dbw->tableName( 'site_stats' );
1256                                 $dbw->query( "UPDATE $site_stats SET ss_images=ss_images+1", __METHOD__ );
1257
1258                                 $this->purgeEverything();
1259                         } else {
1260                                 wfDebug( __METHOD__." restored $revisions as archived versions\n" );
1261                                 $this->purgeDescription();
1262                         }
1263                 }
1264
1265                 return $revisions;
1266         }
1267
1268         /** isMultipage inherited */
1269         /** pageCount inherited */
1270         /** scaleHeight inherited */
1271         /** getImageSize inherited */
1272
1273         /**
1274          * Get the URL of the file description page.
1275          */
1276         function getDescriptionUrl() {
1277                 return $this->title->getLocalUrl();
1278         }
1279
1280         /**
1281          * Get the HTML text of the description page
1282          * This is not used by ImagePage for local files, since (among other things)
1283          * it skips the parser cache.
1284          */
1285         function getDescriptionText() {
1286                 global $wgParser;
1287                 $revision = Revision::newFromTitle( $this->title );
1288                 if ( !$revision ) return false;
1289                 $text = $revision->getText();
1290                 if ( !$text ) return false;
1291                 $html = $wgParser->parse( $text, new ParserOptions );
1292                 return $html;
1293         }
1294
1295         function getTimestamp() {
1296                 $this->load();
1297                 return $this->timestamp;
1298         }
1299 } // LocalFile class
1300
1301 /**
1302  * Backwards compatibility class
1303  */
1304 class Image extends LocalFile {
1305         function __construct( $title ) {
1306                 $repo = FileRepoGroup::singleton()->getLocalRepo();
1307                 parent::__construct( $title, $repo );
1308         }
1309
1310         /**
1311          * Wrapper for wfFindFile(), for backwards-compatibility only
1312          * Do not use in core code.
1313          */
1314         function newFromTitle( $title, $time = false ) {
1315                 $img = wfFindFile( $title, $time );
1316                 if ( !$img ) {
1317                         $img = wfLocalFile( $title );
1318                 }
1319                 return $img;
1320         }
1321 }
1322
1323 /**
1324  * Aliases for backwards compatibility with 1.6
1325  */
1326 define( 'MW_IMG_DELETED_FILE', File::DELETED_FILE );
1327 define( 'MW_IMG_DELETED_COMMENT', File::DELETED_COMMENT );
1328 define( 'MW_IMG_DELETED_USER', File::DELETED_USER );
1329 define( 'MW_IMG_DELETED_RESTRICTED', File::DELETED_RESTRICTED );
1330
1331 ?>