includes/filerepo/file/LocalFile.php

   1 <?php
   2 /**
   3  * Local file in the wiki's own database.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup FileAbstraction
  22  */
  23
  24 use Wikimedia\AtEase\AtEase;
  25 use MediaWiki\Logger\LoggerFactory;
  26 use Wikimedia\Rdbms\Database;
  27 use Wikimedia\Rdbms\IDatabase;
  28 use Wikimedia\Rdbms\IResultWrapper;
  29 use MediaWiki\MediaWikiServices;
  30
  31 /**
  32  * Class to represent a local file in the wiki's own database
  33  *
  34  * Provides methods to retrieve paths (physical, logical, URL),
  35  * to generate image thumbnails or for uploading.
  36  *
  37  * Note that only the repo object knows what its file class is called. You should
  38  * never name a file class explictly outside of the repo class. Instead use the
  39  * repo's factory functions to generate file objects, for example:
  40  *
  41  * RepoGroup::singleton()->getLocalRepo()->newFile( $title );
  42  *
  43  * Consider the services container below;
  44  *
  45  * $services = MediaWikiServices::getInstance();
  46  *
  47  * The convenience services $services->getRepoGroup()->getLocalRepo()->newFile()
  48  * and $services->getRepoGroup()->findFile() should be sufficient in most cases.
  49  *
  50  * @TODO: DI - Instead of using MediaWikiServices::getInstance(), a service should
  51  * ideally accept a RepoGroup in its constructor and then, use $this->repoGroup->findFile()
  52  * and $this->repoGroup->getLocalRepo()->newFile().
  53  *
  54  * @ingroup FileAbstraction
  55  */
  56 class LocalFile extends File {
  57         const VERSION = 11; // cache version
  58
  59         const CACHE_FIELD_MAX_LEN = 1000;
  60
  61         /** @var bool Does the file exist on disk? (loadFromXxx) */
  62         protected $fileExists;
  63
  64         /** @var int Image width */
  65         protected $width;
  66
  67         /** @var int Image height */
  68         protected $height;
  69
  70         /** @var int Returned by getimagesize (loadFromXxx) */
  71         protected $bits;
  72
  73         /** @var string MEDIATYPE_xxx (bitmap, drawing, audio...) */
  74         protected $media_type;
  75
  76         /** @var string MIME type, determined by MimeAnalyzer::guessMimeType */
  77         protected $mime;
  78
  79         /** @var int Size in bytes (loadFromXxx) */
  80         protected $size;
  81
  82         /** @var string Handler-specific metadata */
  83         protected $metadata;
  84
  85         /** @var string SHA-1 base 36 content hash */
  86         protected $sha1;
  87
  88         /** @var bool Whether or not core data has been loaded from the database (loadFromXxx) */
  89         protected $dataLoaded;
  90
  91         /** @var bool Whether or not lazy-loaded data has been loaded from the database */
  92         protected $extraDataLoaded;
  93
  94         /** @var int Bitfield akin to rev_deleted */
  95         protected $deleted;
  96
  97         /** @var string */
  98         protected $repoClass = LocalRepo::class;
  99
 100         /** @var int Number of line to return by nextHistoryLine() (constructor) */
 101         private $historyLine;
 102
 103         /** @var IResultWrapper|null Result of the query for the file's history (nextHistoryLine) */
 104         private $historyRes;
 105
 106         /** @var string Major MIME type */
 107         private $major_mime;
 108
 109         /** @var string Minor MIME type */
 110         private $minor_mime;
 111
 112         /** @var string Upload timestamp */
 113         private $timestamp;
 114
 115         /** @var User Uploader */
 116         private $user;
 117
 118         /** @var string Description of current revision of the file */
 119         private $description;
 120
 121         /** @var string TS_MW timestamp of the last change of the file description */
 122         private $descriptionTouched;
 123
 124         /** @var bool Whether the row was upgraded on load */
 125         private $upgraded;
 126
 127         /** @var bool Whether the row was scheduled to upgrade on load */
 128         private $upgrading;
 129
 130         /** @var bool True if the image row is locked */
 131         private $locked;
 132
 133         /** @var bool True if the image row is locked with a lock initiated transaction */
 134         private $lockedOwnTrx;
 135
 136         /** @var bool True if file is not present in file system. Not to be cached in memcached */
 137         private $missing;
 138
 139         // @note: higher than IDBAccessObject constants
 140         const LOAD_ALL = 16; // integer; load all the lazy fields too (like metadata)
 141
 142         const ATOMIC_SECTION_LOCK = 'LocalFile::lockingTransaction';
 143
 144         /**
 145          * Create a LocalFile from a title
 146          * Do not call this except from inside a repo class.
 147          *
 148          * Note: $unused param is only here to avoid an E_STRICT
 149          *
 150          * @param Title $title
 151          * @param FileRepo $repo
 152          * @param null $unused
 153          *
 154          * @return static
 155          */
 156         static function newFromTitle( $title, $repo, $unused = null ) {
 157                 return new static( $title, $repo );
 158         }
 159
 160         /**
 161          * Create a LocalFile from a title
 162          * Do not call this except from inside a repo class.
 163          *
 164          * @param stdClass $row
 165          * @param FileRepo $repo
 166          *
 167          * @return static
 168          */
 169         static function newFromRow( $row, $repo ) {
 170                 $title = Title::makeTitle( NS_FILE, $row->img_name );
 171                 $file = new static( $title, $repo );
 172                 $file->loadFromRow( $row );
 173
 174                 return $file;
 175         }
 176
 177         /**
 178          * Create a LocalFile from a SHA-1 key
 179          * Do not call this except from inside a repo class.
 180          *
 181          * @param string $sha1 Base-36 SHA-1
 182          * @param LocalRepo $repo
 183          * @param string|bool $timestamp MW_timestamp (optional)
 184          * @return bool|LocalFile
 185          */
 186         static function newFromKey( $sha1, $repo, $timestamp = false ) {
 187                 $dbr = $repo->getReplicaDB();
 188
 189                 $conds = [ 'img_sha1' => $sha1 ];
 190                 if ( $timestamp ) {
 191                         $conds['img_timestamp'] = $dbr->timestamp( $timestamp );
 192                 }
 193
 194                 $fileQuery = static::getQueryInfo();
 195                 $row = $dbr->selectRow(
 196                         $fileQuery['tables'], $fileQuery['fields'], $conds, __METHOD__, [], $fileQuery['joins']
 197                 );
 198                 if ( $row ) {
 199                         return static::newFromRow( $row, $repo );
 200                 } else {
 201                         return false;
 202                 }
 203         }
 204
 205         /**
 206          * Fields in the image table
 207          * @deprecated since 1.31, use self::getQueryInfo() instead.
 208          * @return string[]
 209          */
 210         static function selectFields() {
 211                 global $wgActorTableSchemaMigrationStage;
 212
 213                 wfDeprecated( __METHOD__, '1.31' );
 214                 if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW ) {
 215                         // If code is using this instead of self::getQueryInfo(), there's a
 216                         // decent chance it's going to try to directly access
 217                         // $row->img_user or $row->img_user_text and we can't give it
 218                         // useful values here once those aren't being used anymore.
 219                         throw new BadMethodCallException(
 220                                 'Cannot use ' . __METHOD__
 221                                         . ' when $wgActorTableSchemaMigrationStage has SCHEMA_COMPAT_READ_NEW'
 222                         );
 223                 }
 224
 225                 return [
 226                         'img_name',
 227                         'img_size',
 228                         'img_width',
 229                         'img_height',
 230                         'img_metadata',
 231                         'img_bits',
 232                         'img_media_type',
 233                         'img_major_mime',
 234                         'img_minor_mime',
 235                         'img_user',
 236                         'img_user_text',
 237                         'img_actor' => 'NULL',
 238                         'img_timestamp',
 239                         'img_sha1',
 240                 ] + MediaWikiServices::getInstance()->getCommentStore()->getFields( 'img_description' );
 241         }
 242
 243         /**
 244          * Return the tables, fields, and join conditions to be selected to create
 245          * a new localfile object.
 246          * @since 1.31
 247          * @param string[] $options
 248          *   - omit-lazy: Omit fields that are lazily cached.
 249          * @return array[] With three keys:
 250          *   - tables: (string[]) to include in the `$table` to `IDatabase->select()`
 251          *   - fields: (string[]) to include in the `$vars` to `IDatabase->select()`
 252          *   - joins: (array) to include in the `$join_conds` to `IDatabase->select()`
 253          */
 254         public static function getQueryInfo( array $options = [] ) {
 255                 $commentQuery = MediaWikiServices::getInstance()->getCommentStore()->getJoin( 'img_description' );
 256                 $actorQuery = ActorMigration::newMigration()->getJoin( 'img_user' );
 257                 $ret = [
 258                         'tables' => [ 'image' ] + $commentQuery['tables'] + $actorQuery['tables'],
 259                         'fields' => [
 260                                 'img_name',
 261                                 'img_size',
 262                                 'img_width',
 263                                 'img_height',
 264                                 'img_metadata',
 265                                 'img_bits',
 266                                 'img_media_type',
 267                                 'img_major_mime',
 268                                 'img_minor_mime',
 269                                 'img_timestamp',
 270                                 'img_sha1',
 271                         ] + $commentQuery['fields'] + $actorQuery['fields'],
 272                         'joins' => $commentQuery['joins'] + $actorQuery['joins'],
 273                 ];
 274
 275                 if ( in_array( 'omit-nonlazy', $options, true ) ) {
 276                         // Internal use only for getting only the lazy fields
 277                         $ret['fields'] = [];
 278                 }
 279                 if ( !in_array( 'omit-lazy', $options, true ) ) {
 280                         // Note: Keep this in sync with self::getLazyCacheFields()
 281                         $ret['fields'][] = 'img_metadata';
 282                 }
 283
 284                 return $ret;
 285         }
 286
 287         /**
 288          * Do not call this except from inside a repo class.
 289          * @param Title $title
 290          * @param FileRepo $repo
 291          */
 292         function __construct( $title, $repo ) {
 293                 parent::__construct( $title, $repo );
 294
 295                 $this->metadata = '';
 296                 $this->historyLine = 0;
 297                 $this->historyRes = null;
 298                 $this->dataLoaded = false;
 299                 $this->extraDataLoaded = false;
 300
 301                 $this->assertRepoDefined();
 302                 $this->assertTitleDefined();
 303         }
 304
 305         /**
 306          * Get the memcached key for the main data for this file, or false if
 307          * there is no access to the shared cache.
 308          * @return string|bool
 309          */
 310         function getCacheKey() {
 311                 return $this->repo->getSharedCacheKey( 'file', sha1( $this->getName() ) );
 312         }
 313
 314         /**
 315          * @param WANObjectCache $cache
 316          * @return string[]
 317          * @since 1.28
 318          */
 319         public function getMutableCacheKeys( WANObjectCache $cache ) {
 320                 return [ $this->getCacheKey() ];
 321         }
 322
 323         /**
 324          * Try to load file metadata from memcached, falling back to the database
 325          */
 326         private function loadFromCache() {
 327                 $this->dataLoaded = false;
 328                 $this->extraDataLoaded = false;
 329
 330                 $key = $this->getCacheKey();
 331                 if ( !$key ) {
 332                         $this->loadFromDB( self::READ_NORMAL );
 333
 334                         return;
 335                 }
 336
 337                 $cache = MediaWikiServices::getInstance()->getMainWANObjectCache();
 338                 $cachedValues = $cache->getWithSetCallback(
 339                         $key,
 340                         $cache::TTL_WEEK,
 341                         function ( $oldValue, &$ttl, array &$setOpts ) use ( $cache ) {
 342                                 $setOpts += Database::getCacheSetOptions( $this->repo->getReplicaDB() );
 343
 344                                 $this->loadFromDB( self::READ_NORMAL );
 345
 346                                 $fields = $this->getCacheFields( '' );
 347                                 $cacheVal = [];
 348                                 $cacheVal['fileExists'] = $this->fileExists;
 349                                 if ( $this->fileExists ) {
 350                                         foreach ( $fields as $field ) {
 351                                                 $cacheVal[$field] = $this->$field;
 352                                         }
 353                                 }
 354                                 $cacheVal['user'] = $this->user ? $this->user->getId() : 0;
 355                                 $cacheVal['user_text'] = $this->user ? $this->user->getName() : '';
 356                                 $cacheVal['actor'] = $this->user ? $this->user->getActorId() : null;
 357
 358                                 // Strip off excessive entries from the subset of fields that can become large.
 359                                 // If the cache value gets to large it will not fit in memcached and nothing will
 360                                 // get cached at all, causing master queries for any file access.
 361                                 foreach ( $this->getLazyCacheFields( '' ) as $field ) {
 362                                         if ( isset( $cacheVal[$field] )
 363                                                 && strlen( $cacheVal[$field] ) > 100 * 1024
 364                                         ) {
 365                                                 unset( $cacheVal[$field] ); // don't let the value get too big
 366                                         }
 367                                 }
 368
 369                                 if ( $this->fileExists ) {
 370                                         $ttl = $cache->adaptiveTTL( wfTimestamp( TS_UNIX, $this->timestamp ), $ttl );
 371                                 } else {
 372                                         $ttl = $cache::TTL_DAY;
 373                                 }
 374
 375                                 return $cacheVal;
 376                         },
 377                         [ 'version' => self::VERSION ]
 378                 );
 379
 380                 $this->fileExists = $cachedValues['fileExists'];
 381                 if ( $this->fileExists ) {
 382                         $this->setProps( $cachedValues );
 383                 }
 384
 385                 $this->dataLoaded = true;
 386                 $this->extraDataLoaded = true;
 387                 foreach ( $this->getLazyCacheFields( '' ) as $field ) {
 388                         $this->extraDataLoaded = $this->extraDataLoaded && isset( $cachedValues[$field] );
 389                 }
 390         }
 391
 392         /**
 393          * Purge the file object/metadata cache
 394          */
 395         public function invalidateCache() {
 396                 $key = $this->getCacheKey();
 397                 if ( !$key ) {
 398                         return;
 399                 }
 400
 401                 $this->repo->getMasterDB()->onTransactionPreCommitOrIdle(
 402                         function () use ( $key ) {
 403                                 MediaWikiServices::getInstance()->getMainWANObjectCache()->delete( $key );
 404                         },
 405                         __METHOD__
 406                 );
 407         }
 408
 409         /**
 410          * Load metadata from the file itself
 411          */
 412         function loadFromFile() {
 413                 $props = $this->repo->getFileProps( $this->getVirtualUrl() );
 414                 $this->setProps( $props );
 415         }
 416
 417         /**
 418          * Returns the list of object properties that are included as-is in the cache.
 419          * @param string $prefix Must be the empty string
 420          * @return string[]
 421          * @since 1.31 No longer accepts a non-empty $prefix
 422          */
 423         protected function getCacheFields( $prefix = 'img_' ) {
 424                 if ( $prefix !== '' ) {
 425                         throw new InvalidArgumentException(
 426                                 __METHOD__ . ' with a non-empty prefix is no longer supported.'
 427                         );
 428                 }
 429
 430                 // See self::getQueryInfo() for the fetching of the data from the DB,
 431                 // self::loadFromRow() for the loading of the object from the DB row,
 432                 // and self::loadFromCache() for the caching, and self::setProps() for
 433                 // populating the object from an array of data.
 434                 return [ 'size', 'width', 'height', 'bits', 'media_type',
 435                         'major_mime', 'minor_mime', 'metadata', 'timestamp', 'sha1', 'description' ];
 436         }
 437
 438         /**
 439          * Returns the list of object properties that are included as-is in the
 440          * cache, only when they're not too big, and are lazily loaded by self::loadExtraFromDB().
 441          * @param string $prefix Must be the empty string
 442          * @return string[]
 443          * @since 1.31 No longer accepts a non-empty $prefix
 444          */
 445         protected function getLazyCacheFields( $prefix = 'img_' ) {
 446                 if ( $prefix !== '' ) {
 447                         throw new InvalidArgumentException(
 448                                 __METHOD__ . ' with a non-empty prefix is no longer supported.'
 449                         );
 450                 }
 451
 452                 // Keep this in sync with the omit-lazy option in self::getQueryInfo().
 453                 return [ 'metadata' ];
 454         }
 455
 456         /**
 457          * Load file metadata from the DB
 458          * @param int $flags
 459          */
 460         function loadFromDB( $flags = 0 ) {
 461                 $fname = static::class . '::' . __FUNCTION__;
 462
 463                 # Unconditionally set loaded=true, we don't want the accessors constantly rechecking
 464                 $this->dataLoaded = true;
 465                 $this->extraDataLoaded = true;
 466
 467                 $dbr = ( $flags & self::READ_LATEST )
 468                         ? $this->repo->getMasterDB()
 469                         : $this->repo->getReplicaDB();
 470
 471                 $fileQuery = static::getQueryInfo();
 472                 $row = $dbr->selectRow(
 473                         $fileQuery['tables'],
 474                         $fileQuery['fields'],
 475                         [ 'img_name' => $this->getName() ],
 476                         $fname,
 477                         [],
 478                         $fileQuery['joins']
 479                 );
 480
 481                 if ( $row ) {
 482                         $this->loadFromRow( $row );
 483                 } else {
 484                         $this->fileExists = false;
 485                 }
 486         }
 487
 488         /**
 489          * Load lazy file metadata from the DB.
 490          * This covers fields that are sometimes not cached.
 491          */
 492         protected function loadExtraFromDB() {
 493                 $fname = static::class . '::' . __FUNCTION__;
 494
 495                 # Unconditionally set loaded=true, we don't want the accessors constantly rechecking
 496                 $this->extraDataLoaded = true;
 497
 498                 $fieldMap = $this->loadExtraFieldsWithTimestamp( $this->repo->getReplicaDB(), $fname );
 499                 if ( !$fieldMap ) {
 500                         $fieldMap = $this->loadExtraFieldsWithTimestamp( $this->repo->getMasterDB(), $fname );
 501                 }
 502
 503                 if ( $fieldMap ) {
 504                         foreach ( $fieldMap as $name => $value ) {
 505                                 $this->$name = $value;
 506                         }
 507                 } else {
 508                         throw new MWException( "Could not find data for image '{$this->getName()}'." );
 509                 }
 510         }
 511
 512         /**
 513          * @param IDatabase $dbr
 514          * @param string $fname
 515          * @return string[]|bool
 516          */
 517         private function loadExtraFieldsWithTimestamp( $dbr, $fname ) {
 518                 $fieldMap = false;
 519
 520                 $fileQuery = self::getQueryInfo( [ 'omit-nonlazy' ] );
 521                 $row = $dbr->selectRow(
 522                         $fileQuery['tables'],
 523                         $fileQuery['fields'],
 524                         [
 525                                 'img_name' => $this->getName(),
 526                                 'img_timestamp' => $dbr->timestamp( $this->getTimestamp() ),
 527                         ],
 528                         $fname,
 529                         [],
 530                         $fileQuery['joins']
 531                 );
 532                 if ( $row ) {
 533                         $fieldMap = $this->unprefixRow( $row, 'img_' );
 534                 } else {
 535                         # File may have been uploaded over in the meantime; check the old versions
 536                         $fileQuery = OldLocalFile::getQueryInfo( [ 'omit-nonlazy' ] );
 537                         $row = $dbr->selectRow(
 538                                 $fileQuery['tables'],
 539                                 $fileQuery['fields'],
 540                                 [
 541                                         'oi_name' => $this->getName(),
 542                                         'oi_timestamp' => $dbr->timestamp( $this->getTimestamp() ),
 543                                 ],
 544                                 $fname,
 545                                 [],
 546                                 $fileQuery['joins']
 547                         );
 548                         if ( $row ) {
 549                                 $fieldMap = $this->unprefixRow( $row, 'oi_' );
 550                         }
 551                 }
 552
 553                 if ( isset( $fieldMap['metadata'] ) ) {
 554                         $fieldMap['metadata'] = $this->repo->getReplicaDB()->decodeBlob( $fieldMap['metadata'] );
 555                 }
 556
 557                 return $fieldMap;
 558         }
 559
 560         /**
 561          * @param array|object $row
 562          * @param string $prefix
 563          * @throws MWException
 564          * @return array
 565          */
 566         protected function unprefixRow( $row, $prefix = 'img_' ) {
 567                 $array = (array)$row;
 568                 $prefixLength = strlen( $prefix );
 569
 570                 // Sanity check prefix once
 571                 if ( substr( key( $array ), 0, $prefixLength ) !== $prefix ) {
 572                         throw new MWException( __METHOD__ . ': incorrect $prefix parameter' );
 573                 }
 574
 575                 $decoded = [];
 576                 foreach ( $array as $name => $value ) {
 577                         $decoded[substr( $name, $prefixLength )] = $value;
 578                 }
 579
 580                 return $decoded;
 581         }
 582
 583         /**
 584          * Decode a row from the database (either object or array) to an array
 585          * with timestamps and MIME types decoded, and the field prefix removed.
 586          * @param object $row
 587          * @param string $prefix
 588          * @throws MWException
 589          * @return array
 590          */
 591         function decodeRow( $row, $prefix = 'img_' ) {
 592                 $decoded = $this->unprefixRow( $row, $prefix );
 593
 594                 $decoded['description'] = MediaWikiServices::getInstance()->getCommentStore()
 595                         ->getComment( 'description', (object)$decoded )->text;
 596
 597                 $decoded['user'] = User::newFromAnyId(
 598                         $decoded['user'] ?? null,
 599                         $decoded['user_text'] ?? null,
 600                         $decoded['actor'] ?? null
 601                 );
 602                 unset( $decoded['user_text'], $decoded['actor'] );
 603
 604                 $decoded['timestamp'] = wfTimestamp( TS_MW, $decoded['timestamp'] );
 605
 606                 $decoded['metadata'] = $this->repo->getReplicaDB()->decodeBlob( $decoded['metadata'] );
 607
 608                 if ( empty( $decoded['major_mime'] ) ) {
 609                         $decoded['mime'] = 'unknown/unknown';
 610                 } else {
 611                         if ( !$decoded['minor_mime'] ) {
 612                                 $decoded['minor_mime'] = 'unknown';
 613                         }
 614                         $decoded['mime'] = $decoded['major_mime'] . '/' . $decoded['minor_mime'];
 615                 }
 616
 617                 // Trim zero padding from char/binary field
 618                 $decoded['sha1'] = rtrim( $decoded['sha1'], "\0" );
 619
 620                 // Normalize some fields to integer type, per their database definition.
 621                 // Use unary + so that overflows will be upgraded to double instead of
 622                 // being trucated as with intval(). This is important to allow >2GB
 623                 // files on 32-bit systems.
 624                 foreach ( [ 'size', 'width', 'height', 'bits' ] as $field ) {
 625                         $decoded[$field] = +$decoded[$field];
 626                 }
 627
 628                 return $decoded;
 629         }
 630
 631         /**
 632          * Load file metadata from a DB result row
 633          *
 634          * @param object $row
 635          * @param string $prefix
 636          */
 637         function loadFromRow( $row, $prefix = 'img_' ) {
 638                 $this->dataLoaded = true;
 639                 $this->extraDataLoaded = true;
 640
 641                 $array = $this->decodeRow( $row, $prefix );
 642
 643                 foreach ( $array as $name => $value ) {
 644                         $this->$name = $value;
 645                 }
 646
 647                 $this->fileExists = true;
 648         }
 649
 650         /**
 651          * Load file metadata from cache or DB, unless already loaded
 652          * @param int $flags
 653          */
 654         function load( $flags = 0 ) {
 655                 if ( !$this->dataLoaded ) {
 656                         if ( $flags & self::READ_LATEST ) {
 657                                 $this->loadFromDB( $flags );
 658                         } else {
 659                                 $this->loadFromCache();
 660                         }
 661                 }
 662
 663                 if ( ( $flags & self::LOAD_ALL ) && !$this->extraDataLoaded ) {
 664                         // @note: loads on name/timestamp to reduce race condition problems
 665                         $this->loadExtraFromDB();
 666                 }
 667         }
 668
 669         /**
 670          * Upgrade a row if it needs it
 671          */
 672         protected function maybeUpgradeRow() {
 673                 global $wgUpdateCompatibleMetadata;
 674
 675                 if ( wfReadOnly() || $this->upgrading ) {
 676                         return;
 677                 }
 678
 679                 $upgrade = false;
 680                 if ( is_null( $this->media_type ) || $this->mime == 'image/svg' ) {
 681                         $upgrade = true;
 682                 } else {
 683                         $handler = $this->getHandler();
 684                         if ( $handler ) {
 685                                 $validity = $handler->isMetadataValid( $this, $this->getMetadata() );
 686                                 if ( $validity === MediaHandler::METADATA_BAD ) {
 687                                         $upgrade = true;
 688                                 } elseif ( $validity === MediaHandler::METADATA_COMPATIBLE ) {
 689                                         $upgrade = $wgUpdateCompatibleMetadata;
 690                                 }
 691                         }
 692                 }
 693
 694                 if ( $upgrade ) {
 695                         $this->upgrading = true;
 696                         // Defer updates unless in auto-commit CLI mode
 697                         DeferredUpdates::addCallableUpdate( function () {
 698                                 $this->upgrading = false; // avoid duplicate updates
 699                                 try {
 700                                         $this->upgradeRow();
 701                                 } catch ( LocalFileLockError $e ) {
 702                                         // let the other process handle it (or do it next time)
 703                                 }
 704                         } );
 705                 }
 706         }
 707
 708         /**
 709          * @return bool Whether upgradeRow() ran for this object
 710          */
 711         function getUpgraded() {
 712                 return $this->upgraded;
 713         }
 714
 715         /**
 716          * Fix assorted version-related problems with the image row by reloading it from the file
 717          */
 718         function upgradeRow() {
 719                 $this->lock();
 720
 721                 $this->loadFromFile();
 722
 723                 # Don't destroy file info of missing files
 724                 if ( !$this->fileExists ) {
 725                         $this->unlock();
 726                         wfDebug( __METHOD__ . ": file does not exist, aborting\n" );
 727
 728                         return;
 729                 }
 730
 731                 $dbw = $this->repo->getMasterDB();
 732                 list( $major, $minor ) = self::splitMime( $this->mime );
 733
 734                 if ( wfReadOnly() ) {
 735                         $this->unlock();
 736
 737                         return;
 738                 }
 739                 wfDebug( __METHOD__ . ': upgrading ' . $this->getName() . " to the current schema\n" );
 740
 741                 $dbw->update( 'image',
 742                         [
 743                                 'img_size' => $this->size, // sanity
 744                                 'img_width' => $this->width,
 745                                 'img_height' => $this->height,
 746                                 'img_bits' => $this->bits,
 747                                 'img_media_type' => $this->media_type,
 748                                 'img_major_mime' => $major,
 749                                 'img_minor_mime' => $minor,
 750                                 'img_metadata' => $dbw->encodeBlob( $this->metadata ),
 751                                 'img_sha1' => $this->sha1,
 752                         ],
 753                         [ 'img_name' => $this->getName() ],
 754                         __METHOD__
 755                 );
 756
 757                 $this->invalidateCache();
 758
 759                 $this->unlock();
 760                 $this->upgraded = true; // avoid rework/retries
 761         }
 762
 763         /**
 764          * Set properties in this object to be equal to those given in the
 765          * associative array $info. Only cacheable fields can be set.
 766          * All fields *must* be set in $info except for getLazyCacheFields().
 767          *
 768          * If 'mime' is given, it will be split into major_mime/minor_mime.
 769          * If major_mime/minor_mime are given, $this->mime will also be set.
 770          *
 771          * @param array $info
 772          */
 773         function setProps( $info ) {
 774                 $this->dataLoaded = true;
 775                 $fields = $this->getCacheFields( '' );
 776                 $fields[] = 'fileExists';
 777
 778                 foreach ( $fields as $field ) {
 779                         if ( isset( $info[$field] ) ) {
 780                                 $this->$field = $info[$field];
 781                         }
 782                 }
 783
 784                 if ( isset( $info['user'] ) || isset( $info['user_text'] ) || isset( $info['actor'] ) ) {
 785                         $this->user = User::newFromAnyId(
 786                                 $info['user'] ?? null,
 787                                 $info['user_text'] ?? null,
 788                                 $info['actor'] ?? null
 789                         );
 790                 }
 791
 792                 // Fix up mime fields
 793                 if ( isset( $info['major_mime'] ) ) {
 794                         $this->mime = "{$info['major_mime']}/{$info['minor_mime']}";
 795                 } elseif ( isset( $info['mime'] ) ) {
 796                         $this->mime = $info['mime'];
 797                         list( $this->major_mime, $this->minor_mime ) = self::splitMime( $this->mime );
 798                 }
 799         }
 800
 801         /** splitMime inherited */
 802         /** getName inherited */
 803         /** getTitle inherited */
 804         /** getURL inherited */
 805         /** getViewURL inherited */
 806         /** getPath inherited */
 807         /** isVisible inherited */
 808
 809         /**
 810          * Checks if this file exists in its parent repo, as referenced by its
 811          * virtual URL.
 812          *
 813          * @return bool
 814          */
 815         function isMissing() {
 816                 if ( $this->missing === null ) {
 817                         $fileExists = $this->repo->fileExists( $this->getVirtualUrl() );
 818                         $this->missing = !$fileExists;
 819                 }
 820
 821                 return $this->missing;
 822         }
 823
 824         /**
 825          * Return the width of the image
 826          *
 827          * @param int $page
 828          * @return int
 829          */
 830         public function getWidth( $page = 1 ) {
 831                 $page = (int)$page;
 832                 if ( $page < 1 ) {
 833                         $page = 1;
 834                 }
 835
 836                 $this->load();
 837
 838                 if ( $this->isMultipage() ) {
 839                         $handler = $this->getHandler();
 840                         if ( !$handler ) {
 841                                 return 0;
 842                         }
 843                         $dim = $handler->getPageDimensions( $this, $page );
 844                         if ( $dim ) {
 845                                 return $dim['width'];
 846                         } else {
 847                                 // For non-paged media, the false goes through an
 848                                 // intval, turning failure into 0, so do same here.
 849                                 return 0;
 850                         }
 851                 } else {
 852                         return $this->width;
 853                 }
 854         }
 855
 856         /**
 857          * Return the height of the image
 858          *
 859          * @param int $page
 860          * @return int
 861          */
 862         public function getHeight( $page = 1 ) {
 863                 $page = (int)$page;
 864                 if ( $page < 1 ) {
 865                         $page = 1;
 866                 }
 867
 868                 $this->load();
 869
 870                 if ( $this->isMultipage() ) {
 871                         $handler = $this->getHandler();
 872                         if ( !$handler ) {
 873                                 return 0;
 874                         }
 875                         $dim = $handler->getPageDimensions( $this, $page );
 876                         if ( $dim ) {
 877                                 return $dim['height'];
 878                         } else {
 879                                 // For non-paged media, the false goes through an
 880                                 // intval, turning failure into 0, so do same here.
 881                                 return 0;
 882                         }
 883                 } else {
 884                         return $this->height;
 885                 }
 886         }
 887
 888         /**
 889          * Returns user who uploaded the file
 890          *
 891          * @param string $type 'text', 'id', or 'object'
 892          * @return int|string|User
 893          * @since 1.31 Added 'object'
 894          */
 895         function getUser( $type = 'text' ) {
 896                 $this->load();
 897
 898                 if ( $type === 'object' ) {
 899                         return $this->user;
 900                 } elseif ( $type === 'text' ) {
 901                         return $this->user->getName();
 902                 } elseif ( $type === 'id' ) {
 903                         return $this->user->getId();
 904                 }
 905
 906                 throw new MWException( "Unknown type '$type'." );
 907         }
 908
 909         /**
 910          * Get short description URL for a file based on the page ID.
 911          *
 912          * @return string|null
 913          * @throws MWException
 914          * @since 1.27
 915          */
 916         public function getDescriptionShortUrl() {
 917                 $pageId = $this->title->getArticleID();
 918
 919                 if ( $pageId !== null ) {
 920                         $url = $this->repo->makeUrl( [ 'curid' => $pageId ] );
 921                         if ( $url !== false ) {
 922                                 return $url;
 923                         }
 924                 }
 925                 return null;
 926         }
 927
 928         /**
 929          * Get handler-specific metadata
 930          * @return string
 931          */
 932         function getMetadata() {
 933                 $this->load( self::LOAD_ALL ); // large metadata is loaded in another step
 934                 return $this->metadata;
 935         }
 936
 937         /**
 938          * @return int
 939          */
 940         function getBitDepth() {
 941                 $this->load();
 942
 943                 return (int)$this->bits;
 944         }
 945
 946         /**
 947          * Returns the size of the image file, in bytes
 948          * @return int
 949          */
 950         public function getSize() {
 951                 $this->load();
 952
 953                 return $this->size;
 954         }
 955
 956         /**
 957          * Returns the MIME type of the file.
 958          * @return string
 959          */
 960         function getMimeType() {
 961                 $this->load();
 962
 963                 return $this->mime;
 964         }
 965
 966         /**
 967          * Returns the type of the media in the file.
 968          * Use the value returned by this function with the MEDIATYPE_xxx constants.
 969          * @return string
 970          */
 971         function getMediaType() {
 972                 $this->load();
 973
 974                 return $this->media_type;
 975         }
 976
 977         /** canRender inherited */
 978         /** mustRender inherited */
 979         /** allowInlineDisplay inherited */
 980         /** isSafeFile inherited */
 981         /** isTrustedFile inherited */
 982
 983         /**
 984          * Returns true if the file exists on disk.
 985          * @return bool Whether file exist on disk.
 986          */
 987         public function exists() {
 988                 $this->load();
 989
 990                 return $this->fileExists;
 991         }
 992
 993         /** getTransformScript inherited */
 994         /** getUnscaledThumb inherited */
 995         /** thumbName inherited */
 996         /** createThumb inherited */
 997         /** transform inherited */
 998
 999         /** getHandler inherited */
1000         /** iconThumb inherited */
1001         /** getLastError inherited */
1002
1003         /**
1004          * Get all thumbnail names previously generated for this file
1005          * @param string|bool $archiveName Name of an archive file, default false
1006          * @return array First element is the base dir, then files in that base dir.
1007          */
1008         function getThumbnails( $archiveName = false ) {
1009                 if ( $archiveName ) {
1010                         $dir = $this->getArchiveThumbPath( $archiveName );
1011                 } else {
1012                         $dir = $this->getThumbPath();
1013                 }
1014
1015                 $backend = $this->repo->getBackend();
1016                 $files = [ $dir ];
1017                 try {
1018                         $iterator = $backend->getFileList( [ 'dir' => $dir ] );
1019                         foreach ( $iterator as $file ) {
1020                                 $files[] = $file;
1021                         }
1022                 } catch ( FileBackendError $e ) {
1023                 } // suppress (T56674)
1024
1025                 return $files;
1026         }
1027
1028         /**
1029          * Refresh metadata in memcached, but don't touch thumbnails or CDN
1030          */
1031         function purgeMetadataCache() {
1032                 $this->invalidateCache();
1033         }
1034
1035         /**
1036          * Delete all previously generated thumbnails, refresh metadata in memcached and purge the CDN.
1037          *
1038          * @param array $options An array potentially with the key forThumbRefresh.
1039          *
1040          * @note This used to purge old thumbnails by default as well, but doesn't anymore.
1041          */
1042         function purgeCache( $options = [] ) {
1043                 // Refresh metadata cache
1044                 $this->maybeUpgradeRow();
1045                 $this->purgeMetadataCache();
1046
1047                 // Delete thumbnails
1048                 $this->purgeThumbnails( $options );
1049
1050                 // Purge CDN cache for this file
1051                 DeferredUpdates::addUpdate(
1052                         new CdnCacheUpdate( [ $this->getUrl() ] ),
1053                         DeferredUpdates::PRESEND
1054                 );
1055         }
1056
1057         /**
1058          * Delete cached transformed files for an archived version only.
1059          * @param string $archiveName Name of the archived file
1060          */
1061         function purgeOldThumbnails( $archiveName ) {
1062                 // Get a list of old thumbnails and URLs
1063                 $files = $this->getThumbnails( $archiveName );
1064
1065                 // Purge any custom thumbnail caches
1066                 Hooks::run( 'LocalFilePurgeThumbnails', [ $this, $archiveName ] );
1067
1068                 // Delete thumbnails
1069                 $dir = array_shift( $files );
1070                 $this->purgeThumbList( $dir, $files );
1071
1072                 // Purge the CDN
1073                 $urls = [];
1074                 foreach ( $files as $file ) {
1075                         $urls[] = $this->getArchiveThumbUrl( $archiveName, $file );
1076                 }
1077                 DeferredUpdates::addUpdate( new CdnCacheUpdate( $urls ), DeferredUpdates::PRESEND );
1078         }
1079
1080         /**
1081          * Delete cached transformed files for the current version only.
1082          * @param array $options
1083          * @phan-param array{forThumbRefresh?:bool} $options
1084          */
1085         public function purgeThumbnails( $options = [] ) {
1086                 $files = $this->getThumbnails();
1087                 // Always purge all files from CDN regardless of handler filters
1088                 $urls = [];
1089                 foreach ( $files as $file ) {
1090                         $urls[] = $this->getThumbUrl( $file );
1091                 }
1092                 array_shift( $urls ); // don't purge directory
1093
1094                 // Give media handler a chance to filter the file purge list
1095                 if ( !empty( $options['forThumbRefresh'] ) ) {
1096                         $handler = $this->getHandler();
1097                         if ( $handler ) {
1098                                 $handler->filterThumbnailPurgeList( $files, $options );
1099                         }
1100                 }
1101
1102                 // Purge any custom thumbnail caches
1103                 Hooks::run( 'LocalFilePurgeThumbnails', [ $this, false ] );
1104
1105                 // Delete thumbnails
1106                 $dir = array_shift( $files );
1107                 $this->purgeThumbList( $dir, $files );
1108
1109                 // Purge the CDN
1110                 DeferredUpdates::addUpdate( new CdnCacheUpdate( $urls ), DeferredUpdates::PRESEND );
1111         }
1112
1113         /**
1114          * Prerenders a configurable set of thumbnails
1115          *
1116          * @since 1.28
1117          */
1118         public function prerenderThumbnails() {
1119                 global $wgUploadThumbnailRenderMap;
1120
1121                 $jobs = [];
1122
1123                 $sizes = $wgUploadThumbnailRenderMap;
1124                 rsort( $sizes );
1125
1126                 foreach ( $sizes as $size ) {
1127                         if ( $this->isVectorized() || $this->getWidth() > $size ) {
1128                                 $jobs[] = new ThumbnailRenderJob(
1129                                         $this->getTitle(),
1130                                         [ 'transformParams' => [ 'width' => $size ] ]
1131                                 );
1132                         }
1133                 }
1134
1135                 if ( $jobs ) {
1136                         JobQueueGroup::singleton()->lazyPush( $jobs );
1137                 }
1138         }
1139
1140         /**
1141          * Delete a list of thumbnails visible at urls
1142          * @param string $dir Base dir of the files.
1143          * @param array $files Array of strings: relative filenames (to $dir)
1144          */
1145         protected function purgeThumbList( $dir, $files ) {
1146                 $fileListDebug = strtr(
1147                         var_export( $files, true ),
1148                         [ "\n" => '' ]
1149                 );
1150                 wfDebug( __METHOD__ . ": $fileListDebug\n" );
1151
1152                 $purgeList = [];
1153                 foreach ( $files as $file ) {
1154                         if ( $this->repo->supportsSha1URLs() ) {
1155                                 $reference = $this->getSha1();
1156                         } else {
1157                                 $reference = $this->getName();
1158                         }
1159
1160                         # Check that the reference (filename or sha1) is part of the thumb name
1161                         # This is a basic sanity check to avoid erasing unrelated directories
1162                         if ( strpos( $file, $reference ) !== false
1163                                 || strpos( $file, "-thumbnail" ) !== false // "short" thumb name
1164                         ) {
1165                                 $purgeList[] = "{$dir}/{$file}";
1166                         }
1167                 }
1168
1169                 # Delete the thumbnails
1170                 $this->repo->quickPurgeBatch( $purgeList );
1171                 # Clear out the thumbnail directory if empty
1172                 $this->repo->quickCleanDir( $dir );
1173         }
1174
1175         /** purgeDescription inherited */
1176         /** purgeEverything inherited */
1177
1178         /**
1179          * @param int|null $limit Optional: Limit to number of results
1180          * @param string|int|null $start Optional: Timestamp, start from
1181          * @param string|int|null $end Optional: Timestamp, end at
1182          * @param bool $inc
1183          * @return OldLocalFile[]
1184          */
1185         function getHistory( $limit = null, $start = null, $end = null, $inc = true ) {
1186                 $dbr = $this->repo->getReplicaDB();
1187                 $oldFileQuery = OldLocalFile::getQueryInfo();
1188
1189                 $tables = $oldFileQuery['tables'];
1190                 $fields = $oldFileQuery['fields'];
1191                 $join_conds = $oldFileQuery['joins'];
1192                 $conds = $opts = [];
1193                 $eq = $inc ? '=' : '';
1194                 $conds[] = "oi_name = " . $dbr->addQuotes( $this->title->getDBkey() );
1195
1196                 if ( $start ) {
1197                         $conds[] = "oi_timestamp <$eq " . $dbr->addQuotes( $dbr->timestamp( $start ) );
1198                 }
1199
1200                 if ( $end ) {
1201                         $conds[] = "oi_timestamp >$eq " . $dbr->addQuotes( $dbr->timestamp( $end ) );
1202                 }
1203
1204                 if ( $limit ) {
1205                         $opts['LIMIT'] = $limit;
1206                 }
1207
1208                 // Search backwards for time > x queries
1209                 $order = ( !$start && $end !== null ) ? 'ASC' : 'DESC';
1210                 $opts['ORDER BY'] = "oi_timestamp $order";
1211                 $opts['USE INDEX'] = [ 'oldimage' => 'oi_name_timestamp' ];
1212
1213                 // Avoid PHP 7.1 warning from passing $this by reference
1214                 $localFile = $this;
1215                 Hooks::run( 'LocalFile::getHistory', [ &$localFile, &$tables, &$fields,
1216                         &$conds, &$opts, &$join_conds ] );
1217
1218                 $res = $dbr->select( $tables, $fields, $conds, __METHOD__, $opts, $join_conds );
1219                 $r = [];
1220
1221                 foreach ( $res as $row ) {
1222                         $r[] = $this->repo->newFileFromRow( $row );
1223                 }
1224
1225                 if ( $order == 'ASC' ) {
1226                         $r = array_reverse( $r ); // make sure it ends up descending
1227                 }
1228
1229                 return $r;
1230         }
1231
1232         /**
1233          * Returns the history of this file, line by line.
1234          * starts with current version, then old versions.
1235          * uses $this->historyLine to check which line to return:
1236          *  0      return line for current version
1237          *  1      query for old versions, return first one
1238          *  2, ... return next old version from above query
1239          * @return bool
1240          */
1241         public function nextHistoryLine() {
1242                 # Polymorphic function name to distinguish foreign and local fetches
1243                 $fname = static::class . '::' . __FUNCTION__;
1244
1245                 $dbr = $this->repo->getReplicaDB();
1246
1247                 if ( $this->historyLine == 0 ) { // called for the first time, return line from cur
1248                         $fileQuery = self::getQueryInfo();
1249                         $this->historyRes = $dbr->select( $fileQuery['tables'],
1250                                 $fileQuery['fields'] + [
1251                                         'oi_archive_name' => $dbr->addQuotes( '' ),
1252                                         'oi_deleted' => 0,
1253                                 ],
1254                                 [ 'img_name' => $this->title->getDBkey() ],
1255                                 $fname,
1256                                 [],
1257                                 $fileQuery['joins']
1258                         );
1259
1260                         if ( $dbr->numRows( $this->historyRes ) == 0 ) {
1261                                 $this->historyRes = null;
1262
1263                                 return false;
1264                         }
1265                 } elseif ( $this->historyLine == 1 ) {
1266                         $fileQuery = OldLocalFile::getQueryInfo();
1267                         $this->historyRes = $dbr->select(
1268                                 $fileQuery['tables'],
1269                                 $fileQuery['fields'],
1270                                 [ 'oi_name' => $this->title->getDBkey() ],
1271                                 $fname,
1272                                 [ 'ORDER BY' => 'oi_timestamp DESC' ],
1273                                 $fileQuery['joins']
1274                         );
1275                 }
1276                 $this->historyLine++;
1277
1278                 return $dbr->fetchObject( $this->historyRes );
1279         }
1280
1281         /**
1282          * Reset the history pointer to the first element of the history
1283          */
1284         public function resetHistory() {
1285                 $this->historyLine = 0;
1286
1287                 if ( !is_null( $this->historyRes ) ) {
1288                         $this->historyRes = null;
1289                 }
1290         }
1291
1292         /** getHashPath inherited */
1293         /** getRel inherited */
1294         /** getUrlRel inherited */
1295         /** getArchiveRel inherited */
1296         /** getArchivePath inherited */
1297         /** getThumbPath inherited */
1298         /** getArchiveUrl inherited */
1299         /** getThumbUrl inherited */
1300         /** getArchiveVirtualUrl inherited */
1301         /** getThumbVirtualUrl inherited */
1302         /** isHashed inherited */
1303
1304         /**
1305          * Upload a file and record it in the DB
1306          * @param string|FSFile $src Source storage path, virtual URL, or filesystem path
1307          * @param string $comment Upload description
1308          * @param string $pageText Text to use for the new description page,
1309          *   if a new description page is created
1310          * @param int|bool $flags Flags for publish()
1311          * @param array|bool $props File properties, if known. This can be used to
1312          *   reduce the upload time when uploading virtual URLs for which the file
1313          *   info is already known
1314          * @param string|bool $timestamp Timestamp for img_timestamp, or false to use the
1315          *   current time
1316          * @param User|null $user User object or null to use $wgUser
1317          * @param string[] $tags Change tags to add to the log entry and page revision.
1318          *   (This doesn't check $user's permissions.)
1319          * @param bool $createNullRevision Set to false to avoid creation of a null revision on file
1320          *   upload, see T193621
1321          * @param bool $revert If this file upload is a revert
1322          * @return Status On success, the value member contains the
1323          *     archive name, or an empty string if it was a new file.
1324          */
1325         function upload( $src, $comment, $pageText, $flags = 0, $props = false,
1326                 $timestamp = false, $user = null, $tags = [],
1327                 $createNullRevision = true, $revert = false
1328         ) {
1329                 if ( $this->getRepo()->getReadOnlyReason() !== false ) {
1330                         return $this->readOnlyFatalStatus();
1331                 } elseif ( MediaWikiServices::getInstance()->getRevisionStore()->isReadOnly() ) {
1332                         // Check this in advance to avoid writing to FileBackend and the file tables,
1333                         // only to fail on insert the revision due to the text store being unavailable.
1334                         return $this->readOnlyFatalStatus();
1335                 }
1336
1337                 $srcPath = ( $src instanceof FSFile ) ? $src->getPath() : $src;
1338                 if ( !$props ) {
1339                         if ( FileRepo::isVirtualUrl( $srcPath )
1340                                 || FileBackend::isStoragePath( $srcPath )
1341                         ) {
1342                                 $props = $this->repo->getFileProps( $srcPath );
1343                         } else {
1344                                 $mwProps = new MWFileProps( MediaWikiServices::getInstance()->getMimeAnalyzer() );
1345                                 $props = $mwProps->getPropsFromPath( $srcPath, true );
1346                         }
1347                 }
1348
1349                 $options = [];
1350                 $handler = MediaHandler::getHandler( $props['mime'] );
1351                 if ( $handler ) {
1352                         $metadata = AtEase::quietCall( 'unserialize', $props['metadata'] );
1353
1354                         if ( !is_array( $metadata ) ) {
1355                                 $metadata = [];
1356                         }
1357
1358                         $options['headers'] = $handler->getContentHeaders( $metadata );
1359                 } else {
1360                         $options['headers'] = [];
1361                 }
1362
1363                 // Trim spaces on user supplied text
1364                 $comment = trim( $comment );
1365
1366                 $this->lock();
1367                 $status = $this->publish( $src, $flags, $options );
1368
1369                 if ( $status->successCount >= 2 ) {
1370                         // There will be a copy+(one of move,copy,store).
1371                         // The first succeeding does not commit us to updating the DB
1372                         // since it simply copied the current version to a timestamped file name.
1373                         // It is only *preferable* to avoid leaving such files orphaned.
1374                         // Once the second operation goes through, then the current version was
1375                         // updated and we must therefore update the DB too.
1376                         $oldver = $status->value;
1377                         $uploadStatus = $this->recordUpload2(
1378                                 $oldver,
1379                                 $comment,
1380                                 $pageText,
1381                                 $props,
1382                                 $timestamp,
1383                                 $user,
1384                                 $tags,
1385                                 $createNullRevision,
1386                                 $revert
1387                         );
1388                         if ( !$uploadStatus->isOK() ) {
1389                                 if ( $uploadStatus->hasMessage( 'filenotfound' ) ) {
1390                                         // update filenotfound error with more specific path
1391                                         $status->fatal( 'filenotfound', $srcPath );
1392                                 } else {
1393                                         $status->merge( $uploadStatus );
1394                                 }
1395                         }
1396                 }
1397
1398                 $this->unlock();
1399                 return $status;
1400         }
1401
1402         /**
1403          * Record a file upload in the upload log and the image table
1404          * @param string $oldver
1405          * @param string $desc
1406          * @param string $license
1407          * @param string $copyStatus
1408          * @param string $source
1409          * @param bool $watch
1410          * @param string|bool $timestamp
1411          * @param User|null $user User object or null to use $wgUser
1412          * @return bool
1413          */
1414         function recordUpload( $oldver, $desc, $license = '', $copyStatus = '', $source = '',
1415                 $watch = false, $timestamp = false, User $user = null ) {
1416                 if ( !$user ) {
1417                         global $wgUser;
1418                         $user = $wgUser;
1419                 }
1420
1421                 $pageText = SpecialUpload::getInitialPageText( $desc, $license, $copyStatus, $source );
1422
1423                 if ( !$this->recordUpload2( $oldver, $desc, $pageText, false, $timestamp, $user )->isOK() ) {
1424                         return false;
1425                 }
1426
1427                 if ( $watch ) {
1428                         $user->addWatch( $this->getTitle() );
1429                 }
1430
1431                 return true;
1432         }
1433
1434         /**
1435          * Record a file upload in the upload log and the image table
1436          * @param string $oldver
1437          * @param string $comment
1438          * @param string $pageText
1439          * @param bool|array $props
1440          * @param string|bool $timestamp
1441          * @param null|User $user
1442          * @param string[] $tags
1443          * @param bool $createNullRevision Set to false to avoid creation of a null revision on file
1444          *   upload, see T193621
1445          * @param bool $revert If this file upload is a revert
1446          * @return Status
1447          */
1448         function recordUpload2(
1449                 $oldver, $comment, $pageText, $props = false, $timestamp = false, $user = null, $tags = [],
1450                 $createNullRevision = true, $revert = false
1451         ) {
1452                 global $wgActorTableSchemaMigrationStage;
1453
1454                 if ( is_null( $user ) ) {
1455                         global $wgUser;
1456                         $user = $wgUser;
1457                 }
1458
1459                 $dbw = $this->repo->getMasterDB();
1460
1461                 # Imports or such might force a certain timestamp; otherwise we generate
1462                 # it and can fudge it slightly to keep (name,timestamp) unique on re-upload.
1463                 if ( $timestamp === false ) {
1464                         $timestamp = $dbw->timestamp();
1465                         $allowTimeKludge = true;
1466                 } else {
1467                         $allowTimeKludge = false;
1468                 }
1469
1470                 $props = $props ?: $this->repo->getFileProps( $this->getVirtualUrl() );
1471                 $props['description'] = $comment;
1472                 $props['user'] = $user->getId();
1473                 $props['user_text'] = $user->getName();
1474                 $props['actor'] = $user->getActorId( $dbw );
1475                 $props['timestamp'] = wfTimestamp( TS_MW, $timestamp ); // DB -> TS_MW
1476                 $this->setProps( $props );
1477
1478                 # Fail now if the file isn't there
1479                 if ( !$this->fileExists ) {
1480                         wfDebug( __METHOD__ . ": File " . $this->getRel() . " went missing!\n" );
1481
1482                         return Status::newFatal( 'filenotfound', $this->getRel() );
1483                 }
1484
1485                 $dbw->startAtomic( __METHOD__ );
1486
1487                 # Test to see if the row exists using INSERT IGNORE
1488                 # This avoids race conditions by locking the row until the commit, and also
1489                 # doesn't deadlock. SELECT FOR UPDATE causes a deadlock for every race condition.
1490                 $commentStore = MediaWikiServices::getInstance()->getCommentStore();
1491                 $commentFields = $commentStore->insert( $dbw, 'img_description', $comment );
1492                 $actorMigration = ActorMigration::newMigration();
1493                 $actorFields = $actorMigration->getInsertValues( $dbw, 'img_user', $user );
1494                 $dbw->insert( 'image',
1495                         [
1496                                 'img_name' => $this->getName(),
1497                                 'img_size' => $this->size,
1498                                 'img_width' => intval( $this->width ),
1499                                 'img_height' => intval( $this->height ),
1500                                 'img_bits' => $this->bits,
1501                                 'img_media_type' => $this->media_type,
1502                                 'img_major_mime' => $this->major_mime,
1503                                 'img_minor_mime' => $this->minor_mime,
1504                                 'img_timestamp' => $timestamp,
1505                                 'img_metadata' => $dbw->encodeBlob( $this->metadata ),
1506                                 'img_sha1' => $this->sha1
1507                         ] + $commentFields + $actorFields,
1508                         __METHOD__,
1509                         [ 'IGNORE' ]
1510                 );
1511                 $reupload = ( $dbw->affectedRows() == 0 );
1512
1513                 if ( $reupload ) {
1514                         $row = $dbw->selectRow(
1515                                 'image',
1516                                 [ 'img_timestamp', 'img_sha1' ],
1517                                 [ 'img_name' => $this->getName() ],
1518                                 __METHOD__,
1519                                 [ 'LOCK IN SHARE MODE' ]
1520                         );
1521
1522                         if ( $row && $row->img_sha1 === $this->sha1 ) {
1523                                 $dbw->endAtomic( __METHOD__ );
1524                                 wfDebug( __METHOD__ . ": File " . $this->getRel() . " already exists!\n" );
1525                                 $title = Title::newFromText( $this->getName(), NS_FILE );
1526                                 return Status::newFatal( 'fileexists-no-change', $title->getPrefixedText() );
1527                         }
1528
1529                         if ( $allowTimeKludge ) {
1530                                 # Use LOCK IN SHARE MODE to ignore any transaction snapshotting
1531                                 $lUnixtime = $row ? wfTimestamp( TS_UNIX, $row->img_timestamp ) : false;
1532                                 # Avoid a timestamp that is not newer than the last version
1533                                 # TODO: the image/oldimage tables should be like page/revision with an ID field
1534                                 if ( $lUnixtime && wfTimestamp( TS_UNIX, $timestamp ) <= $lUnixtime ) {
1535                                         sleep( 1 ); // fast enough re-uploads would go far in the future otherwise
1536                                         $timestamp = $dbw->timestamp( $lUnixtime + 1 );
1537                                         $this->timestamp = wfTimestamp( TS_MW, $timestamp ); // DB -> TS_MW
1538                                 }
1539                         }
1540
1541                         $tables = [ 'image' ];
1542                         $fields = [
1543                                 'oi_name' => 'img_name',
1544                                 'oi_archive_name' => $dbw->addQuotes( $oldver ),
1545                                 'oi_size' => 'img_size',
1546                                 'oi_width' => 'img_width',
1547                                 'oi_height' => 'img_height',
1548                                 'oi_bits' => 'img_bits',
1549                                 'oi_description_id' => 'img_description_id',
1550                                 'oi_timestamp' => 'img_timestamp',
1551                                 'oi_metadata' => 'img_metadata',
1552                                 'oi_media_type' => 'img_media_type',
1553                                 'oi_major_mime' => 'img_major_mime',
1554                                 'oi_minor_mime' => 'img_minor_mime',
1555                                 'oi_sha1' => 'img_sha1',
1556                         ];
1557                         $joins = [];
1558
1559                         if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_OLD ) {
1560                                 $fields['oi_user'] = 'img_user';
1561                                 $fields['oi_user_text'] = 'img_user_text';
1562                         }
1563                         if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_NEW ) {
1564                                 $fields['oi_actor'] = 'img_actor';
1565                         }
1566
1567                         if (
1568                                 ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_BOTH ) === SCHEMA_COMPAT_WRITE_BOTH
1569                         ) {
1570                                 // Upgrade any rows that are still old-style. Otherwise an upgrade
1571                                 // might be missed if a deletion happens while the migration script
1572                                 // is running.
1573                                 $res = $dbw->select(
1574                                         [ 'image' ],
1575                                         [ 'img_name', 'img_user', 'img_user_text' ],
1576                                         [ 'img_name' => $this->getName(), 'img_actor' => 0 ],
1577                                         __METHOD__
1578                                 );
1579                                 foreach ( $res as $row ) {
1580                                         $actorId = User::newFromAnyId( $row->img_user, $row->img_user_text, null )->getActorId( $dbw );
1581                                         $dbw->update(
1582                                                 'image',
1583                                                 [ 'img_actor' => $actorId ],
1584                                                 [ 'img_name' => $row->img_name, 'img_actor' => 0 ],
1585                                                 __METHOD__
1586                                         );
1587                                 }
1588                         }
1589
1590                         # (T36993) Note: $oldver can be empty here, if the previous
1591                         # version of the file was broken. Allow registration of the new
1592                         # version to continue anyway, because that's better than having
1593                         # an image that's not fixable by user operations.
1594                         # Collision, this is an update of a file
1595                         # Insert previous contents into oldimage
1596                         $dbw->insertSelect( 'oldimage', $tables, $fields,
1597                                 [ 'img_name' => $this->getName() ], __METHOD__, [], [], $joins );
1598
1599                         # Update the current image row
1600                         $dbw->update( 'image',
1601                                 [
1602                                         'img_size' => $this->size,
1603                                         'img_width' => intval( $this->width ),
1604                                         'img_height' => intval( $this->height ),
1605                                         'img_bits' => $this->bits,
1606                                         'img_media_type' => $this->media_type,
1607                                         'img_major_mime' => $this->major_mime,
1608                                         'img_minor_mime' => $this->minor_mime,
1609                                         'img_timestamp' => $timestamp,
1610                                         'img_metadata' => $dbw->encodeBlob( $this->metadata ),
1611                                         'img_sha1' => $this->sha1
1612                                 ] + $commentFields + $actorFields,
1613                                 [ 'img_name' => $this->getName() ],
1614                                 __METHOD__
1615                         );
1616                 }
1617
1618                 $descTitle = $this->getTitle();
1619                 $descId = $descTitle->getArticleID();
1620                 $wikiPage = new WikiFilePage( $descTitle );
1621                 $wikiPage->setFile( $this );
1622
1623                 // Determine log action. If reupload is done by reverting, use a special log_action.
1624                 if ( $revert === true ) {
1625                         $logAction = 'revert';
1626                 } elseif ( $reupload === true ) {
1627                         $logAction = 'overwrite';
1628                 } else {
1629                         $logAction = 'upload';
1630                 }
1631                 // Add the log entry...
1632                 $logEntry = new ManualLogEntry( 'upload', $logAction );
1633                 $logEntry->setTimestamp( $this->timestamp );
1634                 $logEntry->setPerformer( $user );
1635                 $logEntry->setComment( $comment );
1636                 $logEntry->setTarget( $descTitle );
1637                 // Allow people using the api to associate log entries with the upload.
1638                 // Log has a timestamp, but sometimes different from upload timestamp.
1639                 $logEntry->setParameters(
1640                         [
1641                                 'img_sha1' => $this->sha1,
1642                                 'img_timestamp' => $timestamp,
1643                         ]
1644                 );
1645                 // Note we keep $logId around since during new image
1646                 // creation, page doesn't exist yet, so log_page = 0
1647                 // but we want it to point to the page we're making,
1648                 // so we later modify the log entry.
1649                 // For a similar reason, we avoid making an RC entry
1650                 // now and wait until the page exists.
1651                 $logId = $logEntry->insert();
1652
1653                 if ( $descTitle->exists() ) {
1654                         // Use own context to get the action text in content language
1655                         $formatter = LogFormatter::newFromEntry( $logEntry );
1656                         $formatter->setContext( RequestContext::newExtraneousContext( $descTitle ) );
1657                         $editSummary = $formatter->getPlainActionText();
1658
1659                         $nullRevision = $createNullRevision === false ? null : Revision::newNullRevision(
1660                                 $dbw,
1661                                 $descId,
1662                                 $editSummary,
1663                                 false,
1664                                 $user
1665                         );
1666                         if ( $nullRevision ) {
1667                                 $nullRevision->insertOn( $dbw );
1668                                 Hooks::run(
1669                                         'NewRevisionFromEditComplete',
1670                                         [ $wikiPage, $nullRevision, $nullRevision->getParentId(), $user ]
1671                                 );
1672                                 $wikiPage->updateRevisionOn( $dbw, $nullRevision );
1673                                 // Associate null revision id
1674                                 $logEntry->setAssociatedRevId( $nullRevision->getId() );
1675                         }
1676
1677                         $newPageContent = null;
1678                 } else {
1679                         // Make the description page and RC log entry post-commit
1680                         $newPageContent = ContentHandler::makeContent( $pageText, $descTitle );
1681                 }
1682
1683                 # Defer purges, page creation, and link updates in case they error out.
1684                 # The most important thing is that files and the DB registry stay synced.
1685                 $dbw->endAtomic( __METHOD__ );
1686                 $fname = __METHOD__;
1687
1688                 # Do some cache purges after final commit so that:
1689                 # a) Changes are more likely to be seen post-purge
1690                 # b) They won't cause rollback of the log publish/update above
1691                 DeferredUpdates::addUpdate(
1692                         new AutoCommitUpdate(
1693                                 $dbw,
1694                                 __METHOD__,
1695                                 function () use (
1696                                         $reupload, $wikiPage, $newPageContent, $comment, $user,
1697                                         $logEntry, $logId, $descId, $tags, $fname
1698                                 ) {
1699                                         # Update memcache after the commit
1700                                         $this->invalidateCache();
1701
1702                                         $updateLogPage = false;
1703                                         if ( $newPageContent ) {
1704                                                 # New file page; create the description page.
1705                                                 # There's already a log entry, so don't make a second RC entry
1706                                                 # CDN and file cache for the description page are purged by doEditContent.
1707                                                 $status = $wikiPage->doEditContent(
1708                                                         $newPageContent,
1709                                                         $comment,
1710                                                         EDIT_NEW | EDIT_SUPPRESS_RC,
1711                                                         false,
1712                                                         $user
1713                                                 );
1714
1715                                                 if ( isset( $status->value['revision'] ) ) {
1716                                                         /** @var Revision $rev */
1717                                                         $rev = $status->value['revision'];
1718                                                         // Associate new page revision id
1719                                                         $logEntry->setAssociatedRevId( $rev->getId() );
1720                                                 }
1721                                                 // This relies on the resetArticleID() call in WikiPage::insertOn(),
1722                                                 // which is triggered on $descTitle by doEditContent() above.
1723                                                 if ( isset( $status->value['revision'] ) ) {
1724                                                         /** @var Revision $rev */
1725                                                         $rev = $status->value['revision'];
1726                                                         $updateLogPage = $rev->getPage();
1727                                                 }
1728                                         } else {
1729                                                 # Existing file page: invalidate description page cache
1730                                                 $wikiPage->getTitle()->invalidateCache();
1731                                                 $wikiPage->getTitle()->purgeSquid();
1732                                                 # Allow the new file version to be patrolled from the page footer
1733                                                 Article::purgePatrolFooterCache( $descId );
1734                                         }
1735
1736                                         # Update associated rev id. This should be done by $logEntry->insert() earlier,
1737                                         # but setAssociatedRevId() wasn't called at that point yet...
1738                                         $logParams = $logEntry->getParameters();
1739                                         $logParams['associated_rev_id'] = $logEntry->getAssociatedRevId();
1740                                         $update = [ 'log_params' => LogEntryBase::makeParamBlob( $logParams ) ];
1741                                         if ( $updateLogPage ) {
1742                                                 # Also log page, in case where we just created it above
1743                                                 $update['log_page'] = $updateLogPage;
1744                                         }
1745                                         $this->getRepo()->getMasterDB()->update(
1746                                                 'logging',
1747                                                 $update,
1748                                                 [ 'log_id' => $logId ],
1749                                                 $fname
1750                                         );
1751                                         $this->getRepo()->getMasterDB()->insert(
1752                                                 'log_search',
1753                                                 [
1754                                                         'ls_field' => 'associated_rev_id',
1755                                                         'ls_value' => $logEntry->getAssociatedRevId(),
1756                                                         'ls_log_id' => $logId,
1757                                                 ],
1758                                                 $fname
1759                                         );
1760
1761                                         # Add change tags, if any
1762                                         if ( $tags ) {
1763                                                 $logEntry->addTags( $tags );
1764                                         }
1765
1766                                         # Uploads can be patrolled
1767                                         $logEntry->setIsPatrollable( true );
1768
1769                                         # Now that the log entry is up-to-date, make an RC entry.
1770                                         $logEntry->publish( $logId );
1771
1772                                         # Run hook for other updates (typically more cache purging)
1773                                         Hooks::run( 'FileUpload', [ $this, $reupload, !$newPageContent ] );
1774
1775                                         if ( $reupload ) {
1776                                                 # Delete old thumbnails
1777                                                 $this->purgeThumbnails();
1778                                                 # Remove the old file from the CDN cache
1779                                                 DeferredUpdates::addUpdate(
1780                                                         new CdnCacheUpdate( [ $this->getUrl() ] ),
1781                                                         DeferredUpdates::PRESEND
1782                                                 );
1783                                         } else {
1784                                                 # Update backlink pages pointing to this title if created
1785                                                 LinksUpdate::queueRecursiveJobsForTable(
1786                                                         $this->getTitle(),
1787                                                         'imagelinks',
1788                                                         'upload-image',
1789                                                         $user->getName()
1790                                                 );
1791                                         }
1792
1793                                         $this->prerenderThumbnails();
1794                                 }
1795                         ),
1796                         DeferredUpdates::PRESEND
1797                 );
1798
1799                 if ( !$reupload ) {
1800                         # This is a new file, so update the image count
1801                         DeferredUpdates::addUpdate( SiteStatsUpdate::factory( [ 'images' => 1 ] ) );
1802                 }
1803
1804                 # Invalidate cache for all pages using this file
1805                 DeferredUpdates::addUpdate(
1806                         new HTMLCacheUpdate( $this->getTitle(), 'imagelinks', 'file-upload' )
1807                 );
1808
1809                 return Status::newGood();
1810         }
1811
1812         /**
1813          * Move or copy a file to its public location. If a file exists at the
1814          * destination, move it to an archive. Returns a Status object with
1815          * the archive name in the "value" member on success.
1816          *
1817          * The archive name should be passed through to recordUpload for database
1818          * registration.
1819          *
1820          * @param string|FSFile $src Local filesystem path or virtual URL to the source image
1821          * @param int $flags A bitwise combination of:
1822          *     File::DELETE_SOURCE    Delete the source file, i.e. move rather than copy
1823          * @param array $options Optional additional parameters
1824          * @return Status On success, the value member contains the
1825          *     archive name, or an empty string if it was a new file.
1826          */
1827         function publish( $src, $flags = 0, array $options = [] ) {
1828                 return $this->publishTo( $src, $this->getRel(), $flags, $options );
1829         }
1830
1831         /**
1832          * Move or copy a file to a specified location. Returns a Status
1833          * object with the archive name in the "value" member on success.
1834          *
1835          * The archive name should be passed through to recordUpload for database
1836          * registration.
1837          *
1838          * @param string|FSFile $src Local filesystem path or virtual URL to the source image
1839          * @param string $dstRel Target relative path
1840          * @param int $flags A bitwise combination of:
1841          *     File::DELETE_SOURCE    Delete the source file, i.e. move rather than copy
1842          * @param array $options Optional additional parameters
1843          * @return Status On success, the value member contains the
1844          *     archive name, or an empty string if it was a new file.
1845          */
1846         function publishTo( $src, $dstRel, $flags = 0, array $options = [] ) {
1847                 $srcPath = ( $src instanceof FSFile ) ? $src->getPath() : $src;
1848
1849                 $repo = $this->getRepo();
1850                 if ( $repo->getReadOnlyReason() !== false ) {
1851                         return $this->readOnlyFatalStatus();
1852                 }
1853
1854                 $this->lock();
1855
1856                 if ( $this->isOld() ) {
1857                         $archiveRel = $dstRel;
1858                         $archiveName = basename( $archiveRel );
1859                 } else {
1860                         $archiveName = wfTimestamp( TS_MW ) . '!' . $this->getName();
1861                         $archiveRel = $this->getArchiveRel( $archiveName );
1862                 }
1863
1864                 if ( $repo->hasSha1Storage() ) {
1865                         $sha1 = FileRepo::isVirtualUrl( $srcPath )
1866                                 ? $repo->getFileSha1( $srcPath )
1867                                 : FSFile::getSha1Base36FromPath( $srcPath );
1868                         /** @var FileBackendDBRepoWrapper $wrapperBackend */
1869                         $wrapperBackend = $repo->getBackend();
1870                         '@phan-var FileBackendDBRepoWrapper $wrapperBackend';
1871                         $dst = $wrapperBackend->getPathForSHA1( $sha1 );
1872                         $status = $repo->quickImport( $src, $dst );
1873                         if ( $flags & File::DELETE_SOURCE ) {
1874                                 unlink( $srcPath );
1875                         }
1876
1877                         if ( $this->exists() ) {
1878                                 $status->value = $archiveName;
1879                         }
1880                 } else {
1881                         $flags = $flags & File::DELETE_SOURCE ? LocalRepo::DELETE_SOURCE : 0;
1882                         $status = $repo->publish( $srcPath, $dstRel, $archiveRel, $flags, $options );
1883
1884                         if ( $status->value == 'new' ) {
1885                                 $status->value = '';
1886                         } else {
1887                                 $status->value = $archiveName;
1888                         }
1889                 }
1890
1891                 $this->unlock();
1892                 return $status;
1893         }
1894
1895         /** getLinksTo inherited */
1896         /** getExifData inherited */
1897         /** isLocal inherited */
1898         /** wasDeleted inherited */
1899
1900         /**
1901          * Move file to the new title
1902          *
1903          * Move current, old version and all thumbnails
1904          * to the new filename. Old file is deleted.
1905          *
1906          * Cache purging is done; checks for validity
1907          * and logging are caller's responsibility
1908          *
1909          * @param Title $target New file name
1910          * @return Status
1911          */
1912         function move( $target ) {
1913                 $localRepo = MediaWikiServices::getInstance()->getRepoGroup()->getLocalRepo();
1914                 if ( $this->getRepo()->getReadOnlyReason() !== false ) {
1915                         return $this->readOnlyFatalStatus();
1916                 }
1917
1918                 wfDebugLog( 'imagemove', "Got request to move {$this->name} to " . $target->getText() );
1919                 $batch = new LocalFileMoveBatch( $this, $target );
1920
1921                 $this->lock();
1922                 $batch->addCurrent();
1923                 $archiveNames = $batch->addOlds();
1924                 $status = $batch->execute();
1925                 $this->unlock();
1926
1927                 wfDebugLog( 'imagemove', "Finished moving {$this->name}" );
1928
1929                 // Purge the source and target files outside the transaction...
1930                 $oldTitleFile = $localRepo->newFile( $this->title );
1931                 $newTitleFile = $localRepo->newFile( $target );
1932                 DeferredUpdates::addUpdate(
1933                         new AutoCommitUpdate(
1934                                 $this->getRepo()->getMasterDB(),
1935                                 __METHOD__,
1936                                 function () use ( $oldTitleFile, $newTitleFile, $archiveNames ) {
1937                                         $oldTitleFile->purgeEverything();
1938                                         foreach ( $archiveNames as $archiveName ) {
1939                                                 /** @var OldLocalFile $oldTitleFile */
1940                                                 '@phan-var OldLocalFile $oldTitleFile';
1941                                                 $oldTitleFile->purgeOldThumbnails( $archiveName );
1942                                         }
1943                                         $newTitleFile->purgeEverything();
1944                                 }
1945                         ),
1946                         DeferredUpdates::PRESEND
1947                 );
1948
1949                 if ( $status->isOK() ) {
1950                         // Now switch the object
1951                         $this->title = $target;
1952                         // Force regeneration of the name and hashpath
1953                         $this->name = null;
1954                         $this->hashPath = null;
1955                 }
1956
1957                 return $status;
1958         }
1959
1960         /**
1961          * Delete all versions of the file.
1962          *
1963          * Moves the files into an archive directory (or deletes them)
1964          * and removes the database rows.
1965          *
1966          * Cache purging is done; logging is caller's responsibility.
1967          *
1968          * @param string $reason
1969          * @param bool $suppress
1970          * @param User|null $user
1971          * @return Status
1972          */
1973         function delete( $reason, $suppress = false, $user = null ) {
1974                 if ( $this->getRepo()->getReadOnlyReason() !== false ) {
1975                         return $this->readOnlyFatalStatus();
1976                 }
1977
1978                 $batch = new LocalFileDeleteBatch( $this, $reason, $suppress, $user );
1979
1980                 $this->lock();
1981                 $batch->addCurrent();
1982                 // Get old version relative paths
1983                 $archiveNames = $batch->addOlds();
1984                 $status = $batch->execute();
1985                 $this->unlock();
1986
1987                 if ( $status->isOK() ) {
1988                         DeferredUpdates::addUpdate( SiteStatsUpdate::factory( [ 'images' => -1 ] ) );
1989                 }
1990
1991                 // To avoid slow purges in the transaction, move them outside...
1992                 DeferredUpdates::addUpdate(
1993                         new AutoCommitUpdate(
1994                                 $this->getRepo()->getMasterDB(),
1995                                 __METHOD__,
1996                                 function () use ( $archiveNames ) {
1997                                         $this->purgeEverything();
1998                                         foreach ( $archiveNames as $archiveName ) {
1999                                                 $this->purgeOldThumbnails( $archiveName );
2000                                         }
2001                                 }
2002                         ),
2003                         DeferredUpdates::PRESEND
2004                 );
2005
2006                 // Purge the CDN
2007                 $purgeUrls = [];
2008                 foreach ( $archiveNames as $archiveName ) {
2009                         $purgeUrls[] = $this->getArchiveUrl( $archiveName );
2010                 }
2011                 DeferredUpdates::addUpdate( new CdnCacheUpdate( $purgeUrls ), DeferredUpdates::PRESEND );
2012
2013                 return $status;
2014         }
2015
2016         /**
2017          * Delete an old version of the file.
2018          *
2019          * Moves the file into an archive directory (or deletes it)
2020          * and removes the database row.
2021          *
2022          * Cache purging is done; logging is caller's responsibility.
2023          *
2024          * @param string $archiveName
2025          * @param string $reason
2026          * @param bool $suppress
2027          * @param User|null $user
2028          * @throws MWException Exception on database or file store failure
2029          * @return Status
2030          */
2031         function deleteOld( $archiveName, $reason, $suppress = false, $user = null ) {
2032                 if ( $this->getRepo()->getReadOnlyReason() !== false ) {
2033                         return $this->readOnlyFatalStatus();
2034                 }
2035
2036                 $batch = new LocalFileDeleteBatch( $this, $reason, $suppress, $user );
2037
2038                 $this->lock();
2039                 $batch->addOld( $archiveName );
2040                 $status = $batch->execute();
2041                 $this->unlock();
2042
2043                 $this->purgeOldThumbnails( $archiveName );
2044                 if ( $status->isOK() ) {
2045                         $this->purgeDescription();
2046                 }
2047
2048                 DeferredUpdates::addUpdate(
2049                         new CdnCacheUpdate( [ $this->getArchiveUrl( $archiveName ) ] ),
2050                         DeferredUpdates::PRESEND
2051                 );
2052
2053                 return $status;
2054         }
2055
2056         /**
2057          * Restore all or specified deleted revisions to the given file.
2058          * Permissions and logging are left to the caller.
2059          *
2060          * May throw database exceptions on error.
2061          *
2062          * @param array $versions Set of record ids of deleted items to restore,
2063          *   or empty to restore all revisions.
2064          * @param bool $unsuppress
2065          * @return Status
2066          */
2067         function restore( $versions = [], $unsuppress = false ) {
2068                 if ( $this->getRepo()->getReadOnlyReason() !== false ) {
2069                         return $this->readOnlyFatalStatus();
2070                 }
2071
2072                 $batch = new LocalFileRestoreBatch( $this, $unsuppress );
2073
2074                 $this->lock();
2075                 if ( !$versions ) {
2076                         $batch->addAll();
2077                 } else {
2078                         $batch->addIds( $versions );
2079                 }
2080                 $status = $batch->execute();
2081                 if ( $status->isGood() ) {
2082                         $cleanupStatus = $batch->cleanup();
2083                         $cleanupStatus->successCount = 0;
2084                         $cleanupStatus->failCount = 0;
2085                         $status->merge( $cleanupStatus );
2086                 }
2087
2088                 $this->unlock();
2089                 return $status;
2090         }
2091
2092         /** isMultipage inherited */
2093         /** pageCount inherited */
2094         /** scaleHeight inherited */
2095         /** getImageSize inherited */
2096
2097         /**
2098          * Get the URL of the file description page.
2099          * @return string
2100          */
2101         function getDescriptionUrl() {
2102                 return $this->title->getLocalURL();
2103         }
2104
2105         /**
2106          * Get the HTML text of the description page
2107          * This is not used by ImagePage for local files, since (among other things)
2108          * it skips the parser cache.
2109          *
2110          * @param Language|null $lang What language to get description in (Optional)
2111          * @return string|false
2112          */
2113         function getDescriptionText( Language $lang = null ) {
2114                 $store = MediaWikiServices::getInstance()->getRevisionStore();
2115                 $revision = $store->getRevisionByTitle( $this->title, 0, Revision::READ_NORMAL );
2116                 if ( !$revision ) {
2117                         return false;
2118                 }
2119
2120                 $renderer = MediaWikiServices::getInstance()->getRevisionRenderer();
2121                 $rendered = $renderer->getRenderedRevision( $revision, new ParserOptions( null, $lang ) );
2122
2123                 if ( !$rendered ) {
2124                         // audience check failed
2125                         return false;
2126                 }
2127
2128                 $pout = $rendered->getRevisionParserOutput();
2129                 return $pout->getText();
2130         }
2131
2132         /**
2133          * @param int $audience
2134          * @param User|null $user
2135          * @return string
2136          */
2137         function getDescription( $audience = self::FOR_PUBLIC, User $user = null ) {
2138                 $this->load();
2139                 if ( $audience == self::FOR_PUBLIC && $this->isDeleted( self::DELETED_COMMENT ) ) {
2140                         return '';
2141                 } elseif ( $audience == self::FOR_THIS_USER
2142                         && !$this->userCan( self::DELETED_COMMENT, $user )
2143                 ) {
2144                         return '';
2145                 } else {
2146                         return $this->description;
2147                 }
2148         }
2149
2150         /**
2151          * @return bool|string
2152          */
2153         function getTimestamp() {
2154                 $this->load();
2155
2156                 return $this->timestamp;
2157         }
2158
2159         /**
2160          * @return bool|string
2161          */
2162         public function getDescriptionTouched() {
2163                 // The DB lookup might return false, e.g. if the file was just deleted, or the shared DB repo
2164                 // itself gets it from elsewhere. To avoid repeating the DB lookups in such a case, we
2165                 // need to differentiate between null (uninitialized) and false (failed to load).
2166                 if ( $this->descriptionTouched === null ) {
2167                         $cond = [
2168                                 'page_namespace' => $this->title->getNamespace(),
2169                                 'page_title' => $this->title->getDBkey()
2170                         ];
2171                         $touched = $this->repo->getReplicaDB()->selectField( 'page', 'page_touched', $cond, __METHOD__ );
2172                         $this->descriptionTouched = $touched ? wfTimestamp( TS_MW, $touched ) : false;
2173                 }
2174
2175                 return $this->descriptionTouched;
2176         }
2177
2178         /**
2179          * @return string
2180          */
2181         function getSha1() {
2182                 $this->load();
2183                 // Initialise now if necessary
2184                 if ( $this->sha1 == '' && $this->fileExists ) {
2185                         $this->lock();
2186
2187                         $this->sha1 = $this->repo->getFileSha1( $this->getPath() );
2188                         if ( !wfReadOnly() && strval( $this->sha1 ) != '' ) {
2189                                 $dbw = $this->repo->getMasterDB();
2190                                 $dbw->update( 'image',
2191                                         [ 'img_sha1' => $this->sha1 ],
2192                                         [ 'img_name' => $this->getName() ],
2193                                         __METHOD__ );
2194                                 $this->invalidateCache();
2195                         }
2196
2197                         $this->unlock();
2198                 }
2199
2200                 return $this->sha1;
2201         }
2202
2203         /**
2204          * @return bool Whether to cache in RepoGroup (this avoids OOMs)
2205          */
2206         function isCacheable() {
2207                 $this->load();
2208
2209                 // If extra data (metadata) was not loaded then it must have been large
2210                 return $this->extraDataLoaded
2211                         && strlen( serialize( $this->metadata ) ) <= self::CACHE_FIELD_MAX_LEN;
2212         }
2213
2214         /**
2215          * @return Status
2216          * @since 1.28
2217          */
2218         public function acquireFileLock() {
2219                 return Status::wrap( $this->getRepo()->getBackend()->lockFiles(
2220                         [ $this->getPath() ], LockManager::LOCK_EX, 10
2221                 ) );
2222         }
2223
2224         /**
2225          * @return Status
2226          * @since 1.28
2227          */
2228         public function releaseFileLock() {
2229                 return Status::wrap( $this->getRepo()->getBackend()->unlockFiles(
2230                         [ $this->getPath() ], LockManager::LOCK_EX
2231                 ) );
2232         }
2233
2234         /**
2235          * Start an atomic DB section and lock the image for update
2236          * or increments a reference counter if the lock is already held
2237          *
2238          * This method should not be used outside of LocalFile/LocalFile*Batch
2239          *
2240          * @throws LocalFileLockError Throws an error if the lock was not acquired
2241          * @return bool Whether the file lock owns/spawned the DB transaction
2242          */
2243         public function lock() {
2244                 if ( !$this->locked ) {
2245                         $logger = LoggerFactory::getInstance( 'LocalFile' );
2246
2247                         $dbw = $this->repo->getMasterDB();
2248                         $makesTransaction = !$dbw->trxLevel();
2249                         $dbw->startAtomic( self::ATOMIC_SECTION_LOCK );
2250                         // T56736: use simple lock to handle when the file does not exist.
2251                         // SELECT FOR UPDATE prevents changes, not other SELECTs with FOR UPDATE.
2252                         // Also, that would cause contention on INSERT of similarly named rows.
2253                         $status = $this->acquireFileLock(); // represents all versions of the file
2254                         if ( !$status->isGood() ) {
2255                                 $dbw->endAtomic( self::ATOMIC_SECTION_LOCK );
2256                                 $logger->warning( "Failed to lock '{file}'", [ 'file' => $this->name ] );
2257
2258                                 throw new LocalFileLockError( $status );
2259                         }
2260                         // Release the lock *after* commit to avoid row-level contention.
2261                         // Make sure it triggers on rollback() as well as commit() (T132921).
2262                         $dbw->onTransactionResolution(
2263                                 function () use ( $logger ) {
2264                                         $status = $this->releaseFileLock();
2265                                         if ( !$status->isGood() ) {
2266                                                 $logger->error( "Failed to unlock '{file}'", [ 'file' => $this->name ] );
2267                                         }
2268                                 },
2269                                 __METHOD__
2270                         );
2271                         // Callers might care if the SELECT snapshot is safely fresh
2272                         $this->lockedOwnTrx = $makesTransaction;
2273                 }
2274
2275                 $this->locked++;
2276
2277                 return $this->lockedOwnTrx;
2278         }
2279
2280         /**
2281          * Decrement the lock reference count and end the atomic section if it reaches zero
2282          *
2283          * This method should not be used outside of LocalFile/LocalFile*Batch
2284          *
2285          * The commit and loc release will happen when no atomic sections are active, which
2286          * may happen immediately or at some point after calling this
2287          */
2288         public function unlock() {
2289                 if ( $this->locked ) {
2290                         --$this->locked;
2291                         if ( !$this->locked ) {
2292                                 $dbw = $this->repo->getMasterDB();
2293                                 $dbw->endAtomic( self::ATOMIC_SECTION_LOCK );
2294                                 $this->lockedOwnTrx = false;
2295                         }
2296                 }
2297         }
2298
2299         /**
2300          * @return Status
2301          */
2302         protected function readOnlyFatalStatus() {
2303                 return $this->getRepo()->newFatal( 'filereadonlyerror', $this->getName(),
2304                         $this->getRepo()->getName(), $this->getRepo()->getReadOnlyReason() );
2305         }
2306
2307         /**
2308          * Clean up any dangling locks
2309          */
2310         function __destruct() {
2311                 $this->unlock();
2312         }
2313 }