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 MediaWiki\Logger\LoggerFactory;
  25 use Wikimedia\Rdbms\Database;
  26 use Wikimedia\Rdbms\IDatabase;
  27 use MediaWiki\MediaWikiServices;
  28
  29 /**
  30  * Class to represent a local file in the wiki's own database
  31  *
  32  * Provides methods to retrieve paths (physical, logical, URL),
  33  * to generate image thumbnails or for uploading.
  34  *
  35  * Note that only the repo object knows what its file class is called. You should
  36  * never name a file class explictly outside of the repo class. Instead use the
  37  * repo's factory functions to generate file objects, for example:
  38  *
  39  * RepoGroup::singleton()->getLocalRepo()->newFile( $title );
  40  *
  41  * The convenience functions wfLocalFile() and wfFindFile() should be sufficient
  42  * in most cases.
  43  *
  44  * @ingroup FileAbstraction
  45  */
  46 class LocalFile extends File {
  47         const VERSION = 11; // cache version
  48
  49         const CACHE_FIELD_MAX_LEN = 1000;
  50
  51         /** @var bool Does the file exist on disk? (loadFromXxx) */
  52         protected $fileExists;
  53
  54         /** @var int Image width */
  55         protected $width;
  56
  57         /** @var int Image height */
  58         protected $height;
  59
  60         /** @var int Returned by getimagesize (loadFromXxx) */
  61         protected $bits;
  62
  63         /** @var string MEDIATYPE_xxx (bitmap, drawing, audio...) */
  64         protected $media_type;
  65
  66         /** @var string MIME type, determined by MimeAnalyzer::guessMimeType */
  67         protected $mime;
  68
  69         /** @var int Size in bytes (loadFromXxx) */
  70         protected $size;
  71
  72         /** @var string Handler-specific metadata */
  73         protected $metadata;
  74
  75         /** @var string SHA-1 base 36 content hash */
  76         protected $sha1;
  77
  78         /** @var bool Whether or not core data has been loaded from the database (loadFromXxx) */
  79         protected $dataLoaded;
  80
  81         /** @var bool Whether or not lazy-loaded data has been loaded from the database */
  82         protected $extraDataLoaded;
  83
  84         /** @var int Bitfield akin to rev_deleted */
  85         protected $deleted;
  86
  87         /** @var string */
  88         protected $repoClass = LocalRepo::class;
  89
  90         /** @var int Number of line to return by nextHistoryLine() (constructor) */
  91         private $historyLine;
  92
  93         /** @var int Result of the query for the file's history (nextHistoryLine) */
  94         private $historyRes;
  95
  96         /** @var string Major MIME type */
  97         private $major_mime;
  98
  99         /** @var string Minor MIME type */
 100         private $minor_mime;
 101
 102         /** @var string Upload timestamp */
 103         private $timestamp;
 104
 105         /** @var User Uploader */
 106         private $user;
 107
 108         /** @var string Description of current revision of the file */
 109         private $description;
 110
 111         /** @var string TS_MW timestamp of the last change of the file description */
 112         private $descriptionTouched;
 113
 114         /** @var bool Whether the row was upgraded on load */
 115         private $upgraded;
 116
 117         /** @var bool Whether the row was scheduled to upgrade on load */
 118         private $upgrading;
 119
 120         /** @var bool True if the image row is locked */
 121         private $locked;
 122
 123         /** @var bool True if the image row is locked with a lock initiated transaction */
 124         private $lockedOwnTrx;
 125
 126         /** @var bool True if file is not present in file system. Not to be cached in memcached */
 127         private $missing;
 128
 129         // @note: higher than IDBAccessObject constants
 130         const LOAD_ALL = 16; // integer; load all the lazy fields too (like metadata)
 131
 132         const ATOMIC_SECTION_LOCK = 'LocalFile::lockingTransaction';
 133
 134         /**
 135          * Create a LocalFile from a title
 136          * Do not call this except from inside a repo class.
 137          *
 138          * Note: $unused param is only here to avoid an E_STRICT
 139          *
 140          * @param Title $title
 141          * @param FileRepo $repo
 142          * @param null $unused
 143          *
 144          * @return self
 145          */
 146         static function newFromTitle( $title, $repo, $unused = null ) {
 147                 return new self( $title, $repo );
 148         }
 149
 150         /**
 151          * Create a LocalFile from a title
 152          * Do not call this except from inside a repo class.
 153          *
 154          * @param stdClass $row
 155          * @param FileRepo $repo
 156          *
 157          * @return self
 158          */
 159         static function newFromRow( $row, $repo ) {
 160                 $title = Title::makeTitle( NS_FILE, $row->img_name );
 161                 $file = new self( $title, $repo );
 162                 $file->loadFromRow( $row );
 163
 164                 return $file;
 165         }
 166
 167         /**
 168          * Create a LocalFile from a SHA-1 key
 169          * Do not call this except from inside a repo class.
 170          *
 171          * @param string $sha1 Base-36 SHA-1
 172          * @param LocalRepo $repo
 173          * @param string|bool $timestamp MW_timestamp (optional)
 174          * @return bool|LocalFile
 175          */
 176         static function newFromKey( $sha1, $repo, $timestamp = false ) {
 177                 $dbr = $repo->getReplicaDB();
 178
 179                 $conds = [ 'img_sha1' => $sha1 ];
 180                 if ( $timestamp ) {
 181                         $conds['img_timestamp'] = $dbr->timestamp( $timestamp );
 182                 }
 183
 184                 $fileQuery = self::getQueryInfo();
 185                 $row = $dbr->selectRow(
 186                         $fileQuery['tables'], $fileQuery['fields'], $conds, __METHOD__, [], $fileQuery['joins']
 187                 );
 188                 if ( $row ) {
 189                         return self::newFromRow( $row, $repo );
 190                 } else {
 191                         return false;
 192                 }
 193         }
 194
 195         /**
 196          * Fields in the image table
 197          * @deprecated since 1.31, use self::getQueryInfo() instead.
 198          * @return string[]
 199          */
 200         static function selectFields() {
 201                 global $wgActorTableSchemaMigrationStage;
 202
 203                 wfDeprecated( __METHOD__, '1.31' );
 204                 if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW ) {
 205                         // If code is using this instead of self::getQueryInfo(), there's a
 206                         // decent chance it's going to try to directly access
 207                         // $row->img_user or $row->img_user_text and we can't give it
 208                         // useful values here once those aren't being used anymore.
 209                         throw new BadMethodCallException(
 210                                 'Cannot use ' . __METHOD__
 211                                         . ' when $wgActorTableSchemaMigrationStage has SCHEMA_COMPAT_READ_NEW'
 212                         );
 213                 }
 214
 215                 return [
 216                         'img_name',
 217                         'img_size',
 218                         'img_width',
 219                         'img_height',
 220                         'img_metadata',
 221                         'img_bits',
 222                         'img_media_type',
 223                         'img_major_mime',
 224                         'img_minor_mime',
 225                         'img_user',
 226                         'img_user_text',
 227                         'img_actor' => 'NULL',
 228                         'img_timestamp',
 229                         'img_sha1',
 230                 ] + MediaWikiServices::getInstance()->getCommentStore()->getFields( 'img_description' );
 231         }
 232
 233         /**
 234          * Return the tables, fields, and join conditions to be selected to create
 235          * a new localfile object.
 236          * @since 1.31
 237          * @param string[] $options
 238          *   - omit-lazy: Omit fields that are lazily cached.
 239          * @return array[] With three keys:
 240          *   - tables: (string[]) to include in the `$table` to `IDatabase->select()`
 241          *   - fields: (string[]) to include in the `$vars` to `IDatabase->select()`
 242          *   - joins: (array) to include in the `$join_conds` to `IDatabase->select()`
 243          */
 244         public static function getQueryInfo( array $options = [] ) {
 245                 $commentQuery = MediaWikiServices::getInstance()->getCommentStore()->getJoin( 'img_description' );
 246                 $actorQuery = ActorMigration::newMigration()->getJoin( 'img_user' );
 247                 $ret = [
 248                         'tables' => [ 'image' ] + $commentQuery['tables'] + $actorQuery['tables'],
 249                         'fields' => [
 250                                 'img_name',
 251                                 'img_size',
 252                                 'img_width',
 253                                 'img_height',
 254                                 'img_metadata',
 255                                 'img_bits',
 256                                 'img_media_type',
 257                                 'img_major_mime',
 258                                 'img_minor_mime',
 259                                 'img_timestamp',
 260                                 'img_sha1',
 261                         ] + $commentQuery['fields'] + $actorQuery['fields'],
 262                         'joins' => $commentQuery['joins'] + $actorQuery['joins'],
 263                 ];
 264
 265                 if ( in_array( 'omit-nonlazy', $options, true ) ) {
 266                         // Internal use only for getting only the lazy fields
 267                         $ret['fields'] = [];
 268                 }
 269                 if ( !in_array( 'omit-lazy', $options, true ) ) {
 270                         // Note: Keep this in sync with self::getLazyCacheFields()
 271                         $ret['fields'][] = 'img_metadata';
 272                 }
 273
 274                 return $ret;
 275         }
 276
 277         /**
 278          * Do not call this except from inside a repo class.
 279          * @param Title $title
 280          * @param FileRepo $repo
 281          */
 282         function __construct( $title, $repo ) {
 283                 parent::__construct( $title, $repo );
 284
 285                 $this->metadata = '';
 286                 $this->historyLine = 0;
 287                 $this->historyRes = null;
 288                 $this->dataLoaded = false;
 289                 $this->extraDataLoaded = false;
 290
 291                 $this->assertRepoDefined();
 292                 $this->assertTitleDefined();
 293         }
 294
 295         /**
 296          * Get the memcached key for the main data for this file, or false if
 297          * there is no access to the shared cache.
 298          * @return string|bool
 299          */
 300         function getCacheKey() {
 301                 return $this->repo->getSharedCacheKey( 'file', sha1( $this->getName() ) );
 302         }
 303
 304         /**
 305          * @param WANObjectCache $cache
 306          * @return string[]
 307          * @since 1.28
 308          */
 309         public function getMutableCacheKeys( WANObjectCache $cache ) {
 310                 return [ $this->getCacheKey() ];
 311         }
 312
 313         /**
 314          * Try to load file metadata from memcached, falling back to the database
 315          */
 316         private function loadFromCache() {
 317                 $this->dataLoaded = false;
 318                 $this->extraDataLoaded = false;
 319
 320                 $key = $this->getCacheKey();
 321                 if ( !$key ) {
 322                         $this->loadFromDB( self::READ_NORMAL );
 323
 324                         return;
 325                 }
 326
 327                 $cache = MediaWikiServices::getInstance()->getMainWANObjectCache();
 328                 $cachedValues = $cache->getWithSetCallback(
 329                         $key,
 330                         $cache::TTL_WEEK,
 331                         function ( $oldValue, &$ttl, array &$setOpts ) use ( $cache ) {
 332                                 $setOpts += Database::getCacheSetOptions( $this->repo->getReplicaDB() );
 333
 334                                 $this->loadFromDB( self::READ_NORMAL );
 335
 336                                 $fields = $this->getCacheFields( '' );
 337                                 $cacheVal['fileExists'] = $this->fileExists;
 338                                 if ( $this->fileExists ) {
 339                                         foreach ( $fields as $field ) {
 340                                                 $cacheVal[$field] = $this->$field;
 341                                         }
 342                                 }
 343                                 $cacheVal['user'] = $this->user ? $this->user->getId() : 0;
 344                                 $cacheVal['user_text'] = $this->user ? $this->user->getName() : '';
 345                                 $cacheVal['actor'] = $this->user ? $this->user->getActorId() : null;
 346
 347                                 // Strip off excessive entries from the subset of fields that can become large.
 348                                 // If the cache value gets to large it will not fit in memcached and nothing will
 349                                 // get cached at all, causing master queries for any file access.
 350                                 foreach ( $this->getLazyCacheFields( '' ) as $field ) {
 351                                         if ( isset( $cacheVal[$field] )
 352                                                 && strlen( $cacheVal[$field] ) > 100 * 1024
 353                                         ) {
 354                                                 unset( $cacheVal[$field] ); // don't let the value get too big
 355                                         }
 356                                 }
 357
 358                                 if ( $this->fileExists ) {
 359                                         $ttl = $cache->adaptiveTTL( wfTimestamp( TS_UNIX, $this->timestamp ), $ttl );
 360                                 } else {
 361                                         $ttl = $cache::TTL_DAY;
 362                                 }
 363
 364                                 return $cacheVal;
 365                         },
 366                         [ 'version' => self::VERSION ]
 367                 );
 368
 369                 $this->fileExists = $cachedValues['fileExists'];
 370                 if ( $this->fileExists ) {
 371                         $this->setProps( $cachedValues );
 372                 }
 373
 374                 $this->dataLoaded = true;
 375                 $this->extraDataLoaded = true;
 376                 foreach ( $this->getLazyCacheFields( '' ) as $field ) {
 377                         $this->extraDataLoaded = $this->extraDataLoaded && isset( $cachedValues[$field] );
 378                 }
 379         }
 380
 381         /**
 382          * Purge the file object/metadata cache
 383          */
 384         public function invalidateCache() {
 385                 $key = $this->getCacheKey();
 386                 if ( !$key ) {
 387                         return;
 388                 }
 389
 390                 $this->repo->getMasterDB()->onTransactionPreCommitOrIdle(
 391                         function () use ( $key ) {
 392                                 MediaWikiServices::getInstance()->getMainWANObjectCache()->delete( $key );
 393                         },
 394                         __METHOD__
 395                 );
 396         }
 397
 398         /**
 399          * Load metadata from the file itself
 400          */
 401         function loadFromFile() {
 402                 $props = $this->repo->getFileProps( $this->getVirtualUrl() );
 403                 $this->setProps( $props );
 404         }
 405
 406         /**
 407          * Returns the list of object properties that are included as-is in the cache.
 408          * @param string $prefix Must be the empty string
 409          * @return string[]
 410          * @since 1.31 No longer accepts a non-empty $prefix
 411          */
 412         protected function getCacheFields( $prefix = 'img_' ) {
 413                 if ( $prefix !== '' ) {
 414                         throw new InvalidArgumentException(
 415                                 __METHOD__ . ' with a non-empty prefix is no longer supported.'
 416                         );
 417                 }
 418
 419                 // See self::getQueryInfo() for the fetching of the data from the DB,
 420                 // self::loadFromRow() for the loading of the object from the DB row,
 421                 // and self::loadFromCache() for the caching, and self::setProps() for
 422                 // populating the object from an array of data.
 423                 return [ 'size', 'width', 'height', 'bits', 'media_type',
 424                         'major_mime', 'minor_mime', 'metadata', 'timestamp', 'sha1', 'description' ];
 425         }
 426
 427         /**
 428          * Returns the list of object properties that are included as-is in the
 429          * cache, only when they're not too big, and are lazily loaded by self::loadExtraFromDB().
 430          * @param string $prefix Must be the empty string
 431          * @return string[]
 432          * @since 1.31 No longer accepts a non-empty $prefix
 433          */
 434         protected function getLazyCacheFields( $prefix = 'img_' ) {
 435                 if ( $prefix !== '' ) {
 436                         throw new InvalidArgumentException(
 437                                 __METHOD__ . ' with a non-empty prefix is no longer supported.'
 438                         );
 439                 }
 440
 441                 // Keep this in sync with the omit-lazy option in self::getQueryInfo().
 442                 return [ 'metadata' ];
 443         }
 444
 445         /**
 446          * Load file metadata from the DB
 447          * @param int $flags
 448          */
 449         function loadFromDB( $flags = 0 ) {
 450                 $fname = static::class . '::' . __FUNCTION__;
 451
 452                 # Unconditionally set loaded=true, we don't want the accessors constantly rechecking
 453                 $this->dataLoaded = true;
 454                 $this->extraDataLoaded = true;
 455
 456                 $dbr = ( $flags & self::READ_LATEST )
 457                         ? $this->repo->getMasterDB()
 458                         : $this->repo->getReplicaDB();
 459
 460                 $fileQuery = static::getQueryInfo();
 461                 $row = $dbr->selectRow(
 462                         $fileQuery['tables'],
 463                         $fileQuery['fields'],
 464                         [ 'img_name' => $this->getName() ],
 465                         $fname,
 466                         [],
 467                         $fileQuery['joins']
 468                 );
 469
 470                 if ( $row ) {
 471                         $this->loadFromRow( $row );
 472                 } else {
 473                         $this->fileExists = false;
 474                 }
 475         }
 476
 477         /**
 478          * Load lazy file metadata from the DB.
 479          * This covers fields that are sometimes not cached.
 480          */
 481         protected function loadExtraFromDB() {
 482                 $fname = static::class . '::' . __FUNCTION__;
 483
 484                 # Unconditionally set loaded=true, we don't want the accessors constantly rechecking
 485                 $this->extraDataLoaded = true;
 486
 487                 $fieldMap = $this->loadExtraFieldsWithTimestamp( $this->repo->getReplicaDB(), $fname );
 488                 if ( !$fieldMap ) {
 489                         $fieldMap = $this->loadExtraFieldsWithTimestamp( $this->repo->getMasterDB(), $fname );
 490                 }
 491
 492                 if ( $fieldMap ) {
 493                         foreach ( $fieldMap as $name => $value ) {
 494                                 $this->$name = $value;
 495                         }
 496                 } else {
 497                         throw new MWException( "Could not find data for image '{$this->getName()}'." );
 498                 }
 499         }
 500
 501         /**
 502          * @param IDatabase $dbr
 503          * @param string $fname
 504          * @return string[]|bool
 505          */
 506         private function loadExtraFieldsWithTimestamp( $dbr, $fname ) {
 507                 $fieldMap = false;
 508
 509                 $fileQuery = self::getQueryInfo( [ 'omit-nonlazy' ] );
 510                 $row = $dbr->selectRow(
 511                         $fileQuery['tables'],
 512                         $fileQuery['fields'],
 513                         [
 514                                 'img_name' => $this->getName(),
 515                                 'img_timestamp' => $dbr->timestamp( $this->getTimestamp() ),
 516                         ],
 517                         $fname,
 518                         [],
 519                         $fileQuery['joins']
 520                 );
 521                 if ( $row ) {
 522                         $fieldMap = $this->unprefixRow( $row, 'img_' );
 523                 } else {
 524                         # File may have been uploaded over in the meantime; check the old versions
 525                         $fileQuery = OldLocalFile::getQueryInfo( [ 'omit-nonlazy' ] );
 526                         $row = $dbr->selectRow(
 527                                 $fileQuery['tables'],
 528                                 $fileQuery['fields'],
 529                                 [
 530                                         'oi_name' => $this->getName(),
 531                                         'oi_timestamp' => $dbr->timestamp( $this->getTimestamp() ),
 532                                 ],
 533                                 $fname,
 534                                 [],
 535                                 $fileQuery['joins']
 536                         );
 537                         if ( $row ) {
 538                                 $fieldMap = $this->unprefixRow( $row, 'oi_' );
 539                         }
 540                 }
 541
 542                 if ( isset( $fieldMap['metadata'] ) ) {
 543                         $fieldMap['metadata'] = $this->repo->getReplicaDB()->decodeBlob( $fieldMap['metadata'] );
 544                 }
 545
 546                 return $fieldMap;
 547         }
 548
 549         /**
 550          * @param array|object $row
 551          * @param string $prefix
 552          * @throws MWException
 553          * @return array
 554          */
 555         protected function unprefixRow( $row, $prefix = 'img_' ) {
 556                 $array = (array)$row;
 557                 $prefixLength = strlen( $prefix );
 558
 559                 // Sanity check prefix once
 560                 if ( substr( key( $array ), 0, $prefixLength ) !== $prefix ) {
 561                         throw new MWException( __METHOD__ . ': incorrect $prefix parameter' );
 562                 }
 563
 564                 $decoded = [];
 565                 foreach ( $array as $name => $value ) {
 566                         $decoded[substr( $name, $prefixLength )] = $value;
 567                 }
 568
 569                 return $decoded;
 570         }
 571
 572         /**
 573          * Decode a row from the database (either object or array) to an array
 574          * with timestamps and MIME types decoded, and the field prefix removed.
 575          * @param object $row
 576          * @param string $prefix
 577          * @throws MWException
 578          * @return array
 579          */
 580         function decodeRow( $row, $prefix = 'img_' ) {
 581                 $decoded = $this->unprefixRow( $row, $prefix );
 582
 583                 $decoded['description'] = MediaWikiServices::getInstance()->getCommentStore()
 584                         ->getComment( 'description', (object)$decoded )->text;
 585
 586                 $decoded['user'] = User::newFromAnyId(
 587                         $decoded['user'] ?? null,
 588                         $decoded['user_text'] ?? null,
 589                         $decoded['actor'] ?? null
 590                 );
 591                 unset( $decoded['user_text'], $decoded['actor'] );
 592
 593                 $decoded['timestamp'] = wfTimestamp( TS_MW, $decoded['timestamp'] );
 594
 595                 $decoded['metadata'] = $this->repo->getReplicaDB()->decodeBlob( $decoded['metadata'] );
 596
 597                 if ( empty( $decoded['major_mime'] ) ) {
 598                         $decoded['mime'] = 'unknown/unknown';
 599                 } else {
 600                         if ( !$decoded['minor_mime'] ) {
 601                                 $decoded['minor_mime'] = 'unknown';
 602                         }
 603                         $decoded['mime'] = $decoded['major_mime'] . '/' . $decoded['minor_mime'];
 604                 }
 605
 606                 // Trim zero padding from char/binary field
 607                 $decoded['sha1'] = rtrim( $decoded['sha1'], "\0" );
 608
 609                 // Normalize some fields to integer type, per their database definition.
 610                 // Use unary + so that overflows will be upgraded to double instead of
 611                 // being trucated as with intval(). This is important to allow >2GB
 612                 // files on 32-bit systems.
 613                 foreach ( [ 'size', 'width', 'height', 'bits' ] as $field ) {
 614                         $decoded[$field] = +$decoded[$field];
 615                 }
 616
 617                 return $decoded;
 618         }
 619
 620         /**
 621          * Load file metadata from a DB result row
 622          *
 623          * @param object $row
 624          * @param string $prefix
 625          */
 626         function loadFromRow( $row, $prefix = 'img_' ) {
 627                 $this->dataLoaded = true;
 628                 $this->extraDataLoaded = true;
 629
 630                 $array = $this->decodeRow( $row, $prefix );
 631
 632                 foreach ( $array as $name => $value ) {
 633                         $this->$name = $value;
 634                 }
 635
 636                 $this->fileExists = true;
 637                 $this->maybeUpgradeRow();
 638         }
 639
 640         /**
 641          * Load file metadata from cache or DB, unless already loaded
 642          * @param int $flags
 643          */
 644         function load( $flags = 0 ) {
 645                 if ( !$this->dataLoaded ) {
 646                         if ( $flags & self::READ_LATEST ) {
 647                                 $this->loadFromDB( $flags );
 648                         } else {
 649                                 $this->loadFromCache();
 650                         }
 651                 }
 652
 653                 if ( ( $flags & self::LOAD_ALL ) && !$this->extraDataLoaded ) {
 654                         // @note: loads on name/timestamp to reduce race condition problems
 655                         $this->loadExtraFromDB();
 656                 }
 657         }
 658
 659         /**
 660          * Upgrade a row if it needs it
 661          */
 662         function maybeUpgradeRow() {
 663                 global $wgUpdateCompatibleMetadata;
 664
 665                 if ( wfReadOnly() || $this->upgrading ) {
 666                         return;
 667                 }
 668
 669                 $upgrade = false;
 670                 if ( is_null( $this->media_type ) || $this->mime == 'image/svg' ) {
 671                         $upgrade = true;
 672                 } else {
 673                         $handler = $this->getHandler();
 674                         if ( $handler ) {
 675                                 $validity = $handler->isMetadataValid( $this, $this->getMetadata() );
 676                                 if ( $validity === MediaHandler::METADATA_BAD ) {
 677                                         $upgrade = true;
 678                                 } elseif ( $validity === MediaHandler::METADATA_COMPATIBLE ) {
 679                                         $upgrade = $wgUpdateCompatibleMetadata;
 680                                 }
 681                         }
 682                 }
 683
 684                 if ( $upgrade ) {
 685                         $this->upgrading = true;
 686                         // Defer updates unless in auto-commit CLI mode
 687                         DeferredUpdates::addCallableUpdate( function () {
 688                                 $this->upgrading = false; // avoid duplicate updates
 689                                 try {
 690                                         $this->upgradeRow();
 691                                 } catch ( LocalFileLockError $e ) {
 692                                         // let the other process handle it (or do it next time)
 693                                 }
 694                         } );
 695                 }
 696         }
 697
 698         /**
 699          * @return bool Whether upgradeRow() ran for this object
 700          */
 701         function getUpgraded() {
 702                 return $this->upgraded;
 703         }
 704
 705         /**
 706          * Fix assorted version-related problems with the image row by reloading it from the file
 707          */
 708         function upgradeRow() {
 709                 $this->lock();
 710
 711                 $this->loadFromFile();
 712
 713                 # Don't destroy file info of missing files
 714                 if ( !$this->fileExists ) {
 715                         $this->unlock();
 716                         wfDebug( __METHOD__ . ": file does not exist, aborting\n" );
 717
 718                         return;
 719                 }
 720
 721                 $dbw = $this->repo->getMasterDB();
 722                 list( $major, $minor ) = self::splitMime( $this->mime );
 723
 724                 if ( wfReadOnly() ) {
 725                         $this->unlock();
 726
 727                         return;
 728                 }
 729                 wfDebug( __METHOD__ . ': upgrading ' . $this->getName() . " to the current schema\n" );
 730
 731                 $dbw->update( 'image',
 732                         [
 733                                 'img_size' => $this->size, // sanity
 734                                 'img_width' => $this->width,
 735                                 'img_height' => $this->height,
 736                                 'img_bits' => $this->bits,
 737                                 'img_media_type' => $this->media_type,
 738                                 'img_major_mime' => $major,
 739                                 'img_minor_mime' => $minor,
 740                                 'img_metadata' => $dbw->encodeBlob( $this->metadata ),
 741                                 'img_sha1' => $this->sha1,
 742                         ],
 743                         [ 'img_name' => $this->getName() ],
 744                         __METHOD__
 745                 );
 746
 747                 $this->invalidateCache();
 748
 749                 $this->unlock();
 750                 $this->upgraded = true; // avoid rework/retries
 751         }
 752
 753         /**
 754          * Set properties in this object to be equal to those given in the
 755          * associative array $info. Only cacheable fields can be set.
 756          * All fields *must* be set in $info except for getLazyCacheFields().
 757          *
 758          * If 'mime' is given, it will be split into major_mime/minor_mime.
 759          * If major_mime/minor_mime are given, $this->mime will also be set.
 760          *
 761          * @param array $info
 762          */
 763         function setProps( $info ) {
 764                 $this->dataLoaded = true;
 765                 $fields = $this->getCacheFields( '' );
 766                 $fields[] = 'fileExists';
 767
 768                 foreach ( $fields as $field ) {
 769                         if ( isset( $info[$field] ) ) {
 770                                 $this->$field = $info[$field];
 771                         }
 772                 }
 773
 774                 if ( isset( $info['user'] ) || isset( $info['user_text'] ) || isset( $info['actor'] ) ) {
 775                         $this->user = User::newFromAnyId(
 776                                 $info['user'] ?? null,
 777                                 $info['user_text'] ?? null,
 778                                 $info['actor'] ?? null
 779                         );
 780                 }
 781
 782                 // Fix up mime fields
 783                 if ( isset( $info['major_mime'] ) ) {
 784                         $this->mime = "{$info['major_mime']}/{$info['minor_mime']}";
 785                 } elseif ( isset( $info['mime'] ) ) {
 786                         $this->mime = $info['mime'];
 787                         list( $this->major_mime, $this->minor_mime ) = self::splitMime( $this->mime );
 788                 }
 789         }
 790
 791         /** splitMime inherited */
 792         /** getName inherited */
 793         /** getTitle inherited */
 794         /** getURL inherited */
 795         /** getViewURL inherited */
 796         /** getPath inherited */
 797         /** isVisible inherited */
 798
 799         /**
 800          * @return bool
 801          */
 802         function isMissing() {
 803                 if ( $this->missing === null ) {
 804                         list( $fileExists ) = $this->repo->fileExists( $this->getVirtualUrl() );
 805                         $this->missing = !$fileExists;
 806                 }
 807
 808                 return $this->missing;
 809         }
 810
 811         /**
 812          * Return the width of the image
 813          *
 814          * @param int $page
 815          * @return int
 816          */
 817         public function getWidth( $page = 1 ) {
 818                 $page = (int)$page;
 819                 if ( $page < 1 ) {
 820                         $page = 1;
 821                 }
 822
 823                 $this->load();
 824
 825                 if ( $this->isMultipage() ) {
 826                         $handler = $this->getHandler();
 827                         if ( !$handler ) {
 828                                 return 0;
 829                         }
 830                         $dim = $handler->getPageDimensions( $this, $page );
 831                         if ( $dim ) {
 832                                 return $dim['width'];
 833                         } else {
 834                                 // For non-paged media, the false goes through an
 835                                 // intval, turning failure into 0, so do same here.
 836                                 return 0;
 837                         }
 838                 } else {
 839                         return $this->width;
 840                 }
 841         }
 842
 843         /**
 844          * Return the height of the image
 845          *
 846          * @param int $page
 847          * @return int
 848          */
 849         public function getHeight( $page = 1 ) {
 850                 $page = (int)$page;
 851                 if ( $page < 1 ) {
 852                         $page = 1;
 853                 }
 854
 855                 $this->load();
 856
 857                 if ( $this->isMultipage() ) {
 858                         $handler = $this->getHandler();
 859                         if ( !$handler ) {
 860                                 return 0;
 861                         }
 862                         $dim = $handler->getPageDimensions( $this, $page );
 863                         if ( $dim ) {
 864                                 return $dim['height'];
 865                         } else {
 866                                 // For non-paged media, the false goes through an
 867                                 // intval, turning failure into 0, so do same here.
 868                                 return 0;
 869                         }
 870                 } else {
 871                         return $this->height;
 872                 }
 873         }
 874
 875         /**
 876          * Returns user who uploaded the file
 877          *
 878          * @param string $type 'text', 'id', or 'object'
 879          * @return int|string|User
 880          * @since 1.31 Added 'object'
 881          */
 882         function getUser( $type = 'text' ) {
 883                 $this->load();
 884
 885                 if ( $type === 'object' ) {
 886                         return $this->user;
 887                 } elseif ( $type === 'text' ) {
 888                         return $this->user->getName();
 889                 } elseif ( $type === 'id' ) {
 890                         return $this->user->getId();
 891                 }
 892
 893                 throw new MWException( "Unknown type '$type'." );
 894         }
 895
 896         /**
 897          * Get short description URL for a file based on the page ID.
 898          *
 899          * @return string|null
 900          * @throws MWException
 901          * @since 1.27
 902          */
 903         public function getDescriptionShortUrl() {
 904                 $pageId = $this->title->getArticleID();
 905
 906                 if ( $pageId !== null ) {
 907                         $url = $this->repo->makeUrl( [ 'curid' => $pageId ] );
 908                         if ( $url !== false ) {
 909                                 return $url;
 910                         }
 911                 }
 912                 return null;
 913         }
 914
 915         /**
 916          * Get handler-specific metadata
 917          * @return string
 918          */
 919         function getMetadata() {
 920                 $this->load( self::LOAD_ALL ); // large metadata is loaded in another step
 921                 return $this->metadata;
 922         }
 923
 924         /**
 925          * @return int
 926          */
 927         function getBitDepth() {
 928                 $this->load();
 929
 930                 return (int)$this->bits;
 931         }
 932
 933         /**
 934          * Returns the size of the image file, in bytes
 935          * @return int
 936          */
 937         public function getSize() {
 938                 $this->load();
 939
 940                 return $this->size;
 941         }
 942
 943         /**
 944          * Returns the MIME type of the file.
 945          * @return string
 946          */
 947         function getMimeType() {
 948                 $this->load();
 949
 950                 return $this->mime;
 951         }
 952
 953         /**
 954          * Returns the type of the media in the file.
 955          * Use the value returned by this function with the MEDIATYPE_xxx constants.
 956          * @return string
 957          */
 958         function getMediaType() {
 959                 $this->load();
 960
 961                 return $this->media_type;
 962         }
 963
 964         /** canRender inherited */
 965         /** mustRender inherited */
 966         /** allowInlineDisplay inherited */
 967         /** isSafeFile inherited */
 968         /** isTrustedFile inherited */
 969
 970         /**
 971          * Returns true if the file exists on disk.
 972          * @return bool Whether file exist on disk.
 973          */
 974         public function exists() {
 975                 $this->load();
 976
 977                 return $this->fileExists;
 978         }
 979
 980         /** getTransformScript inherited */
 981         /** getUnscaledThumb inherited */
 982         /** thumbName inherited */
 983         /** createThumb inherited */
 984         /** transform inherited */
 985
 986         /** getHandler inherited */
 987         /** iconThumb inherited */
 988         /** getLastError inherited */
 989
 990         /**
 991          * Get all thumbnail names previously generated for this file
 992          * @param string|bool $archiveName Name of an archive file, default false
 993          * @return array First element is the base dir, then files in that base dir.
 994          */
 995         function getThumbnails( $archiveName = false ) {
 996                 if ( $archiveName ) {
 997                         $dir = $this->getArchiveThumbPath( $archiveName );
 998                 } else {
 999                         $dir = $this->getThumbPath();
1000                 }
1001
1002                 $backend = $this->repo->getBackend();
1003                 $files = [ $dir ];
1004                 try {
1005                         $iterator = $backend->getFileList( [ 'dir' => $dir ] );
1006                         foreach ( $iterator as $file ) {
1007                                 $files[] = $file;
1008                         }
1009                 } catch ( FileBackendError $e ) {
1010                 } // suppress (T56674)
1011
1012                 return $files;
1013         }
1014
1015         /**
1016          * Refresh metadata in memcached, but don't touch thumbnails or CDN
1017          */
1018         function purgeMetadataCache() {
1019                 $this->invalidateCache();
1020         }
1021
1022         /**
1023          * Delete all previously generated thumbnails, refresh metadata in memcached and purge the CDN.
1024          *
1025          * @param array $options An array potentially with the key forThumbRefresh.
1026          *
1027          * @note This used to purge old thumbnails by default as well, but doesn't anymore.
1028          */
1029         function purgeCache( $options = [] ) {
1030                 // Refresh metadata cache
1031                 $this->purgeMetadataCache();
1032
1033                 // Delete thumbnails
1034                 $this->purgeThumbnails( $options );
1035
1036                 // Purge CDN cache for this file
1037                 DeferredUpdates::addUpdate(
1038                         new CdnCacheUpdate( [ $this->getUrl() ] ),
1039                         DeferredUpdates::PRESEND
1040                 );
1041         }
1042
1043         /**
1044          * Delete cached transformed files for an archived version only.
1045          * @param string $archiveName Name of the archived file
1046          */
1047         function purgeOldThumbnails( $archiveName ) {
1048                 // Get a list of old thumbnails and URLs
1049                 $files = $this->getThumbnails( $archiveName );
1050
1051                 // Purge any custom thumbnail caches
1052                 Hooks::run( 'LocalFilePurgeThumbnails', [ $this, $archiveName ] );
1053
1054                 // Delete thumbnails
1055                 $dir = array_shift( $files );
1056                 $this->purgeThumbList( $dir, $files );
1057
1058                 // Purge the CDN
1059                 $urls = [];
1060                 foreach ( $files as $file ) {
1061                         $urls[] = $this->getArchiveThumbUrl( $archiveName, $file );
1062                 }
1063                 DeferredUpdates::addUpdate( new CdnCacheUpdate( $urls ), DeferredUpdates::PRESEND );
1064         }
1065
1066         /**
1067          * Delete cached transformed files for the current version only.
1068          * @param array $options
1069          */
1070         public function purgeThumbnails( $options = [] ) {
1071                 $files = $this->getThumbnails();
1072                 // Always purge all files from CDN regardless of handler filters
1073                 $urls = [];
1074                 foreach ( $files as $file ) {
1075                         $urls[] = $this->getThumbUrl( $file );
1076                 }
1077                 array_shift( $urls ); // don't purge directory
1078
1079                 // Give media handler a chance to filter the file purge list
1080                 if ( !empty( $options['forThumbRefresh'] ) ) {
1081                         $handler = $this->getHandler();
1082                         if ( $handler ) {
1083                                 $handler->filterThumbnailPurgeList( $files, $options );
1084                         }
1085                 }
1086
1087                 // Purge any custom thumbnail caches
1088                 Hooks::run( 'LocalFilePurgeThumbnails', [ $this, false ] );
1089
1090                 // Delete thumbnails
1091                 $dir = array_shift( $files );
1092                 $this->purgeThumbList( $dir, $files );
1093
1094                 // Purge the CDN
1095                 DeferredUpdates::addUpdate( new CdnCacheUpdate( $urls ), DeferredUpdates::PRESEND );
1096         }
1097
1098         /**
1099          * Prerenders a configurable set of thumbnails
1100          *
1101          * @since 1.28
1102          */
1103         public function prerenderThumbnails() {
1104                 global $wgUploadThumbnailRenderMap;
1105
1106                 $jobs = [];
1107
1108                 $sizes = $wgUploadThumbnailRenderMap;
1109                 rsort( $sizes );
1110
1111                 foreach ( $sizes as $size ) {
1112                         if ( $this->isVectorized() || $this->getWidth() > $size ) {
1113                                 $jobs[] = new ThumbnailRenderJob(
1114                                         $this->getTitle(),
1115                                         [ 'transformParams' => [ 'width' => $size ] ]
1116                                 );
1117                         }
1118                 }
1119
1120                 if ( $jobs ) {
1121                         JobQueueGroup::singleton()->lazyPush( $jobs );
1122                 }
1123         }
1124
1125         /**
1126          * Delete a list of thumbnails visible at urls
1127          * @param string $dir Base dir of the files.
1128          * @param array $files Array of strings: relative filenames (to $dir)
1129          */
1130         protected function purgeThumbList( $dir, $files ) {
1131                 $fileListDebug = strtr(
1132                         var_export( $files, true ),
1133                         [ "\n" => '' ]
1134                 );
1135                 wfDebug( __METHOD__ . ": $fileListDebug\n" );
1136
1137                 $purgeList = [];
1138                 foreach ( $files as $file ) {
1139                         if ( $this->repo->supportsSha1URLs() ) {
1140                                 $reference = $this->getSha1();
1141                         } else {
1142                                 $reference = $this->getName();
1143                         }
1144
1145                         # Check that the reference (filename or sha1) is part of the thumb name
1146                         # This is a basic sanity check to avoid erasing unrelated directories
1147                         if ( strpos( $file, $reference ) !== false
1148                                 || strpos( $file, "-thumbnail" ) !== false // "short" thumb name
1149                         ) {
1150                                 $purgeList[] = "{$dir}/{$file}";
1151                         }
1152                 }
1153
1154                 # Delete the thumbnails
1155                 $this->repo->quickPurgeBatch( $purgeList );
1156                 # Clear out the thumbnail directory if empty
1157                 $this->repo->quickCleanDir( $dir );
1158         }
1159
1160         /** purgeDescription inherited */
1161         /** purgeEverything inherited */
1162
1163         /**
1164          * @param int|null $limit Optional: Limit to number of results
1165          * @param string|int|null $start Optional: Timestamp, start from
1166          * @param string|int|null $end Optional: Timestamp, end at
1167          * @param bool $inc
1168          * @return OldLocalFile[]
1169          */
1170         function getHistory( $limit = null, $start = null, $end = null, $inc = true ) {
1171                 $dbr = $this->repo->getReplicaDB();
1172                 $oldFileQuery = OldLocalFile::getQueryInfo();
1173
1174                 $tables = $oldFileQuery['tables'];
1175                 $fields = $oldFileQuery['fields'];
1176                 $join_conds = $oldFileQuery['joins'];
1177                 $conds = $opts = [];
1178                 $eq = $inc ? '=' : '';
1179                 $conds[] = "oi_name = " . $dbr->addQuotes( $this->title->getDBkey() );
1180
1181                 if ( $start ) {
1182                         $conds[] = "oi_timestamp <$eq " . $dbr->addQuotes( $dbr->timestamp( $start ) );
1183                 }
1184
1185                 if ( $end ) {
1186                         $conds[] = "oi_timestamp >$eq " . $dbr->addQuotes( $dbr->timestamp( $end ) );
1187                 }
1188
1189                 if ( $limit ) {
1190                         $opts['LIMIT'] = $limit;
1191                 }
1192
1193                 // Search backwards for time > x queries
1194                 $order = ( !$start && $end !== null ) ? 'ASC' : 'DESC';
1195                 $opts['ORDER BY'] = "oi_timestamp $order";
1196                 $opts['USE INDEX'] = [ 'oldimage' => 'oi_name_timestamp' ];
1197
1198                 // Avoid PHP 7.1 warning from passing $this by reference
1199                 $localFile = $this;
1200                 Hooks::run( 'LocalFile::getHistory', [ &$localFile, &$tables, &$fields,
1201                         &$conds, &$opts, &$join_conds ] );
1202
1203                 $res = $dbr->select( $tables, $fields, $conds, __METHOD__, $opts, $join_conds );
1204                 $r = [];
1205
1206                 foreach ( $res as $row ) {
1207                         $r[] = $this->repo->newFileFromRow( $row );
1208                 }
1209
1210                 if ( $order == 'ASC' ) {
1211                         $r = array_reverse( $r ); // make sure it ends up descending
1212                 }
1213
1214                 return $r;
1215         }
1216
1217         /**
1218          * Returns the history of this file, line by line.
1219          * starts with current version, then old versions.
1220          * uses $this->historyLine to check which line to return:
1221          *  0      return line for current version
1222          *  1      query for old versions, return first one
1223          *  2, ... return next old version from above query
1224          * @return bool
1225          */
1226         public function nextHistoryLine() {
1227                 # Polymorphic function name to distinguish foreign and local fetches
1228                 $fname = static::class . '::' . __FUNCTION__;
1229
1230                 $dbr = $this->repo->getReplicaDB();
1231
1232                 if ( $this->historyLine == 0 ) { // called for the first time, return line from cur
1233                         $fileQuery = self::getQueryInfo();
1234                         $this->historyRes = $dbr->select( $fileQuery['tables'],
1235                                 $fileQuery['fields'] + [
1236                                         'oi_archive_name' => $dbr->addQuotes( '' ),
1237                                         'oi_deleted' => 0,
1238                                 ],
1239                                 [ 'img_name' => $this->title->getDBkey() ],
1240                                 $fname,
1241                                 [],
1242                                 $fileQuery['joins']
1243                         );
1244
1245                         if ( $dbr->numRows( $this->historyRes ) == 0 ) {
1246                                 $this->historyRes = null;
1247
1248                                 return false;
1249                         }
1250                 } elseif ( $this->historyLine == 1 ) {
1251                         $fileQuery = OldLocalFile::getQueryInfo();
1252                         $this->historyRes = $dbr->select(
1253                                 $fileQuery['tables'],
1254                                 $fileQuery['fields'],
1255                                 [ 'oi_name' => $this->title->getDBkey() ],
1256                                 $fname,
1257                                 [ 'ORDER BY' => 'oi_timestamp DESC' ],
1258                                 $fileQuery['joins']
1259                         );
1260                 }
1261                 $this->historyLine++;
1262
1263                 return $dbr->fetchObject( $this->historyRes );
1264         }
1265
1266         /**
1267          * Reset the history pointer to the first element of the history
1268          */
1269         public function resetHistory() {
1270                 $this->historyLine = 0;
1271
1272                 if ( !is_null( $this->historyRes ) ) {
1273                         $this->historyRes = null;
1274                 }
1275         }
1276
1277         /** getHashPath inherited */
1278         /** getRel inherited */
1279         /** getUrlRel inherited */
1280         /** getArchiveRel inherited */
1281         /** getArchivePath inherited */
1282         /** getThumbPath inherited */
1283         /** getArchiveUrl inherited */
1284         /** getThumbUrl inherited */
1285         /** getArchiveVirtualUrl inherited */
1286         /** getThumbVirtualUrl inherited */
1287         /** isHashed inherited */
1288
1289         /**
1290          * Upload a file and record it in the DB
1291          * @param string|FSFile $src Source storage path, virtual URL, or filesystem path
1292          * @param string $comment Upload description
1293          * @param string $pageText Text to use for the new description page,
1294          *   if a new description page is created
1295          * @param int|bool $flags Flags for publish()
1296          * @param array|bool $props File properties, if known. This can be used to
1297          *   reduce the upload time when uploading virtual URLs for which the file
1298          *   info is already known
1299          * @param string|bool $timestamp Timestamp for img_timestamp, or false to use the
1300          *   current time
1301          * @param User|null $user User object or null to use $wgUser
1302          * @param string[] $tags Change tags to add to the log entry and page revision.
1303          *   (This doesn't check $user's permissions.)
1304          * @param bool $createNullRevision Set to false to avoid creation of a null revision on file
1305          *   upload, see T193621
1306          * @param bool $revert If this file upload is a revert
1307          * @return Status On success, the value member contains the
1308          *     archive name, or an empty string if it was a new file.
1309          */
1310         function upload( $src, $comment, $pageText, $flags = 0, $props = false,
1311                 $timestamp = false, $user = null, $tags = [],
1312                 $createNullRevision = true, $revert = false
1313         ) {
1314                 if ( $this->getRepo()->getReadOnlyReason() !== false ) {
1315                         return $this->readOnlyFatalStatus();
1316                 } elseif ( MediaWikiServices::getInstance()->getRevisionStore()->isReadOnly() ) {
1317                         // Check this in advance to avoid writing to FileBackend and the file tables,
1318                         // only to fail on insert the revision due to the text store being unavailable.
1319                         return $this->readOnlyFatalStatus();
1320                 }
1321
1322                 $srcPath = ( $src instanceof FSFile ) ? $src->getPath() : $src;
1323                 if ( !$props ) {
1324                         if ( FileRepo::isVirtualUrl( $srcPath )
1325                                 || FileBackend::isStoragePath( $srcPath )
1326                         ) {
1327                                 $props = $this->repo->getFileProps( $srcPath );
1328                         } else {
1329                                 $mwProps = new MWFileProps( MediaWikiServices::getInstance()->getMimeAnalyzer() );
1330                                 $props = $mwProps->getPropsFromPath( $srcPath, true );
1331                         }
1332                 }
1333
1334                 $options = [];
1335                 $handler = MediaHandler::getHandler( $props['mime'] );
1336                 if ( $handler ) {
1337                         $metadata = Wikimedia\quietCall( 'unserialize', $props['metadata'] );
1338
1339                         if ( !is_array( $metadata ) ) {
1340                                 $metadata = [];
1341                         }
1342
1343                         $options['headers'] = $handler->getContentHeaders( $metadata );
1344                 } else {
1345                         $options['headers'] = [];
1346                 }
1347
1348                 // Trim spaces on user supplied text
1349                 $comment = trim( $comment );
1350
1351                 $this->lock();
1352                 $status = $this->publish( $src, $flags, $options );
1353
1354                 if ( $status->successCount >= 2 ) {
1355                         // There will be a copy+(one of move,copy,store).
1356                         // The first succeeding does not commit us to updating the DB
1357                         // since it simply copied the current version to a timestamped file name.
1358                         // It is only *preferable* to avoid leaving such files orphaned.
1359                         // Once the second operation goes through, then the current version was
1360                         // updated and we must therefore update the DB too.
1361                         $oldver = $status->value;
1362                         $uploadStatus = $this->recordUpload2(
1363                                 $oldver,
1364                                 $comment,
1365                                 $pageText,
1366                                 $props,
1367                                 $timestamp,
1368                                 $user,
1369                                 $tags,
1370                                 $createNullRevision,
1371                                 $revert
1372                         );
1373                         if ( !$uploadStatus->isOK() ) {
1374                                 if ( $uploadStatus->hasMessage( 'filenotfound' ) ) {
1375                                         // update filenotfound error with more specific path
1376                                         $status->fatal( 'filenotfound', $srcPath );
1377                                 } else {
1378                                         $status->merge( $uploadStatus );
1379                                 }
1380                         }
1381                 }
1382
1383                 $this->unlock();
1384                 return $status;
1385         }
1386
1387         /**
1388          * Record a file upload in the upload log and the image table
1389          * @param string $oldver
1390          * @param string $desc
1391          * @param string $license
1392          * @param string $copyStatus
1393          * @param string $source
1394          * @param bool $watch
1395          * @param string|bool $timestamp
1396          * @param User|null $user User object or null to use $wgUser
1397          * @return bool
1398          */
1399         function recordUpload( $oldver, $desc, $license = '', $copyStatus = '', $source = '',
1400                 $watch = false, $timestamp = false, User $user = null ) {
1401                 if ( !$user ) {
1402                         global $wgUser;
1403                         $user = $wgUser;
1404                 }
1405
1406                 $pageText = SpecialUpload::getInitialPageText( $desc, $license, $copyStatus, $source );
1407
1408                 if ( !$this->recordUpload2( $oldver, $desc, $pageText, false, $timestamp, $user )->isOK() ) {
1409                         return false;
1410                 }
1411
1412                 if ( $watch ) {
1413                         $user->addWatch( $this->getTitle() );
1414                 }
1415
1416                 return true;
1417         }
1418
1419         /**
1420          * Record a file upload in the upload log and the image table
1421          * @param string $oldver
1422          * @param string $comment
1423          * @param string $pageText
1424          * @param bool|array $props
1425          * @param string|bool $timestamp
1426          * @param null|User $user
1427          * @param string[] $tags
1428          * @param bool $createNullRevision Set to false to avoid creation of a null revision on file
1429          *   upload, see T193621
1430          * @param bool $revert If this file upload is a revert
1431          * @return Status
1432          */
1433         function recordUpload2(
1434                 $oldver, $comment, $pageText, $props = false, $timestamp = false, $user = null, $tags = [],
1435                 $createNullRevision = true, $revert = false
1436         ) {
1437                 global $wgActorTableSchemaMigrationStage;
1438
1439                 if ( is_null( $user ) ) {
1440                         global $wgUser;
1441                         $user = $wgUser;
1442                 }
1443
1444                 $dbw = $this->repo->getMasterDB();
1445
1446                 # Imports or such might force a certain timestamp; otherwise we generate
1447                 # it and can fudge it slightly to keep (name,timestamp) unique on re-upload.
1448                 if ( $timestamp === false ) {
1449                         $timestamp = $dbw->timestamp();
1450                         $allowTimeKludge = true;
1451                 } else {
1452                         $allowTimeKludge = false;
1453                 }
1454
1455                 $props = $props ?: $this->repo->getFileProps( $this->getVirtualUrl() );
1456                 $props['description'] = $comment;
1457                 $props['user'] = $user->getId();
1458                 $props['user_text'] = $user->getName();
1459                 $props['actor'] = $user->getActorId( $dbw );
1460                 $props['timestamp'] = wfTimestamp( TS_MW, $timestamp ); // DB -> TS_MW
1461                 $this->setProps( $props );
1462
1463                 # Fail now if the file isn't there
1464                 if ( !$this->fileExists ) {
1465                         wfDebug( __METHOD__ . ": File " . $this->getRel() . " went missing!\n" );
1466
1467                         return Status::newFatal( 'filenotfound', $this->getRel() );
1468                 }
1469
1470                 $dbw->startAtomic( __METHOD__ );
1471
1472                 # Test to see if the row exists using INSERT IGNORE
1473                 # This avoids race conditions by locking the row until the commit, and also
1474                 # doesn't deadlock. SELECT FOR UPDATE causes a deadlock for every race condition.
1475                 $commentStore = MediaWikiServices::getInstance()->getCommentStore();
1476                 $commentFields = $commentStore->insert( $dbw, 'img_description', $comment );
1477                 $actorMigration = ActorMigration::newMigration();
1478                 $actorFields = $actorMigration->getInsertValues( $dbw, 'img_user', $user );
1479                 $dbw->insert( 'image',
1480                         [
1481                                 'img_name' => $this->getName(),
1482                                 'img_size' => $this->size,
1483                                 'img_width' => intval( $this->width ),
1484                                 'img_height' => intval( $this->height ),
1485                                 'img_bits' => $this->bits,
1486                                 'img_media_type' => $this->media_type,
1487                                 'img_major_mime' => $this->major_mime,
1488                                 'img_minor_mime' => $this->minor_mime,
1489                                 'img_timestamp' => $timestamp,
1490                                 'img_metadata' => $dbw->encodeBlob( $this->metadata ),
1491                                 'img_sha1' => $this->sha1
1492                         ] + $commentFields + $actorFields,
1493                         __METHOD__,
1494                         'IGNORE'
1495                 );
1496                 $reupload = ( $dbw->affectedRows() == 0 );
1497
1498                 if ( $reupload ) {
1499                         $row = $dbw->selectRow(
1500                                 'image',
1501                                 [ 'img_timestamp', 'img_sha1' ],
1502                                 [ 'img_name' => $this->getName() ],
1503                                 __METHOD__,
1504                                 [ 'LOCK IN SHARE MODE' ]
1505                         );
1506
1507                         if ( $row && $row->img_sha1 === $this->sha1 ) {
1508                                 $dbw->endAtomic( __METHOD__ );
1509                                 wfDebug( __METHOD__ . ": File " . $this->getRel() . " already exists!\n" );
1510                                 $title = Title::newFromText( $this->getName(), NS_FILE );
1511                                 return Status::newFatal( 'fileexists-no-change', $title->getPrefixedText() );
1512                         }
1513
1514                         if ( $allowTimeKludge ) {
1515                                 # Use LOCK IN SHARE MODE to ignore any transaction snapshotting
1516                                 $lUnixtime = $row ? wfTimestamp( TS_UNIX, $row->img_timestamp ) : false;
1517                                 # Avoid a timestamp that is not newer than the last version
1518                                 # TODO: the image/oldimage tables should be like page/revision with an ID field
1519                                 if ( $lUnixtime && wfTimestamp( TS_UNIX, $timestamp ) <= $lUnixtime ) {
1520                                         sleep( 1 ); // fast enough re-uploads would go far in the future otherwise
1521                                         $timestamp = $dbw->timestamp( $lUnixtime + 1 );
1522                                         $this->timestamp = wfTimestamp( TS_MW, $timestamp ); // DB -> TS_MW
1523                                 }
1524                         }
1525
1526                         $tables = [ 'image' ];
1527                         $fields = [
1528                                 'oi_name' => 'img_name',
1529                                 'oi_archive_name' => $dbw->addQuotes( $oldver ),
1530                                 'oi_size' => 'img_size',
1531                                 'oi_width' => 'img_width',
1532                                 'oi_height' => 'img_height',
1533                                 'oi_bits' => 'img_bits',
1534                                 'oi_description_id' => 'img_description_id',
1535                                 'oi_timestamp' => 'img_timestamp',
1536                                 'oi_metadata' => 'img_metadata',
1537                                 'oi_media_type' => 'img_media_type',
1538                                 'oi_major_mime' => 'img_major_mime',
1539                                 'oi_minor_mime' => 'img_minor_mime',
1540                                 'oi_sha1' => 'img_sha1',
1541                         ];
1542                         $joins = [];
1543
1544                         if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_OLD ) {
1545                                 $fields['oi_user'] = 'img_user';
1546                                 $fields['oi_user_text'] = 'img_user_text';
1547                         }
1548                         if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_NEW ) {
1549                                 $fields['oi_actor'] = 'img_actor';
1550                         }
1551
1552                         if (
1553                                 ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_BOTH ) === SCHEMA_COMPAT_WRITE_BOTH
1554                         ) {
1555                                 // Upgrade any rows that are still old-style. Otherwise an upgrade
1556                                 // might be missed if a deletion happens while the migration script
1557                                 // is running.
1558                                 $res = $dbw->select(
1559                                         [ 'image' ],
1560                                         [ 'img_name', 'img_user', 'img_user_text' ],
1561                                         [ 'img_name' => $this->getName(), 'img_actor' => 0 ],
1562                                         __METHOD__
1563                                 );
1564                                 foreach ( $res as $row ) {
1565                                         $actorId = User::newFromAnyId( $row->img_user, $row->img_user_text, null )->getActorId( $dbw );
1566                                         $dbw->update(
1567                                                 'image',
1568                                                 [ 'img_actor' => $actorId ],
1569                                                 [ 'img_name' => $row->img_name, 'img_actor' => 0 ],
1570                                                 __METHOD__
1571                                         );
1572                                 }
1573                         }
1574
1575                         # (T36993) Note: $oldver can be empty here, if the previous
1576                         # version of the file was broken. Allow registration of the new
1577                         # version to continue anyway, because that's better than having
1578                         # an image that's not fixable by user operations.
1579                         # Collision, this is an update of a file
1580                         # Insert previous contents into oldimage
1581                         $dbw->insertSelect( 'oldimage', $tables, $fields,
1582                                 [ 'img_name' => $this->getName() ], __METHOD__, [], [], $joins );
1583
1584                         # Update the current image row
1585                         $dbw->update( 'image',
1586                                 [
1587                                         'img_size' => $this->size,
1588                                         'img_width' => intval( $this->width ),
1589                                         'img_height' => intval( $this->height ),
1590                                         'img_bits' => $this->bits,
1591                                         'img_media_type' => $this->media_type,
1592                                         'img_major_mime' => $this->major_mime,
1593                                         'img_minor_mime' => $this->minor_mime,
1594                                         'img_timestamp' => $timestamp,
1595                                         'img_metadata' => $dbw->encodeBlob( $this->metadata ),
1596                                         'img_sha1' => $this->sha1
1597                                 ] + $commentFields + $actorFields,
1598                                 [ 'img_name' => $this->getName() ],
1599                                 __METHOD__
1600                         );
1601                 }
1602
1603                 $descTitle = $this->getTitle();
1604                 $descId = $descTitle->getArticleID();
1605                 $wikiPage = new WikiFilePage( $descTitle );
1606                 $wikiPage->setFile( $this );
1607
1608                 // Determine log action. If reupload is done by reverting, use a special log_action.
1609                 if ( $revert === true ) {
1610                         $logAction = 'revert';
1611                 } elseif ( $reupload === true ) {
1612                         $logAction = 'overwrite';
1613                 } else {
1614                         $logAction = 'upload';
1615                 }
1616                 // Add the log entry...
1617                 $logEntry = new ManualLogEntry( 'upload', $logAction );
1618                 $logEntry->setTimestamp( $this->timestamp );
1619                 $logEntry->setPerformer( $user );
1620                 $logEntry->setComment( $comment );
1621                 $logEntry->setTarget( $descTitle );
1622                 // Allow people using the api to associate log entries with the upload.
1623                 // Log has a timestamp, but sometimes different from upload timestamp.
1624                 $logEntry->setParameters(
1625                         [
1626                                 'img_sha1' => $this->sha1,
1627                                 'img_timestamp' => $timestamp,
1628                         ]
1629                 );
1630                 // Note we keep $logId around since during new image
1631                 // creation, page doesn't exist yet, so log_page = 0
1632                 // but we want it to point to the page we're making,
1633                 // so we later modify the log entry.
1634                 // For a similar reason, we avoid making an RC entry
1635                 // now and wait until the page exists.
1636                 $logId = $logEntry->insert();
1637
1638                 if ( $descTitle->exists() ) {
1639                         // Use own context to get the action text in content language
1640                         $formatter = LogFormatter::newFromEntry( $logEntry );
1641                         $formatter->setContext( RequestContext::newExtraneousContext( $descTitle ) );
1642                         $editSummary = $formatter->getPlainActionText();
1643
1644                         $nullRevision = $createNullRevision === false ? null : Revision::newNullRevision(
1645                                 $dbw,
1646                                 $descId,
1647                                 $editSummary,
1648                                 false,
1649                                 $user
1650                         );
1651                         if ( $nullRevision ) {
1652                                 $nullRevision->insertOn( $dbw );
1653                                 Hooks::run(
1654                                         'NewRevisionFromEditComplete',
1655                                         [ $wikiPage, $nullRevision, $nullRevision->getParentId(), $user ]
1656                                 );
1657                                 $wikiPage->updateRevisionOn( $dbw, $nullRevision );
1658                                 // Associate null revision id
1659                                 $logEntry->setAssociatedRevId( $nullRevision->getId() );
1660                         }
1661
1662                         $newPageContent = null;
1663                 } else {
1664                         // Make the description page and RC log entry post-commit
1665                         $newPageContent = ContentHandler::makeContent( $pageText, $descTitle );
1666                 }
1667
1668                 # Defer purges, page creation, and link updates in case they error out.
1669                 # The most important thing is that files and the DB registry stay synced.
1670                 $dbw->endAtomic( __METHOD__ );
1671                 $fname = __METHOD__;
1672
1673                 # Do some cache purges after final commit so that:
1674                 # a) Changes are more likely to be seen post-purge
1675                 # b) They won't cause rollback of the log publish/update above
1676                 DeferredUpdates::addUpdate(
1677                         new AutoCommitUpdate(
1678                                 $dbw,
1679                                 __METHOD__,
1680                                 function () use (
1681                                         $reupload, $wikiPage, $newPageContent, $comment, $user,
1682                                         $logEntry, $logId, $descId, $tags, $fname
1683                                 ) {
1684                                         # Update memcache after the commit
1685                                         $this->invalidateCache();
1686
1687                                         $updateLogPage = false;
1688                                         if ( $newPageContent ) {
1689                                                 # New file page; create the description page.
1690                                                 # There's already a log entry, so don't make a second RC entry
1691                                                 # CDN and file cache for the description page are purged by doEditContent.
1692                                                 $status = $wikiPage->doEditContent(
1693                                                         $newPageContent,
1694                                                         $comment,
1695                                                         EDIT_NEW | EDIT_SUPPRESS_RC,
1696                                                         false,
1697                                                         $user
1698                                                 );
1699
1700                                                 if ( isset( $status->value['revision'] ) ) {
1701                                                         /** @var Revision $rev */
1702                                                         $rev = $status->value['revision'];
1703                                                         // Associate new page revision id
1704                                                         $logEntry->setAssociatedRevId( $rev->getId() );
1705                                                 }
1706                                                 // This relies on the resetArticleID() call in WikiPage::insertOn(),
1707                                                 // which is triggered on $descTitle by doEditContent() above.
1708                                                 if ( isset( $status->value['revision'] ) ) {
1709                                                         /** @var Revision $rev */
1710                                                         $rev = $status->value['revision'];
1711                                                         $updateLogPage = $rev->getPage();
1712                                                 }
1713                                         } else {
1714                                                 # Existing file page: invalidate description page cache
1715                                                 $wikiPage->getTitle()->invalidateCache();
1716                                                 $wikiPage->getTitle()->purgeSquid();
1717                                                 # Allow the new file version to be patrolled from the page footer
1718                                                 Article::purgePatrolFooterCache( $descId );
1719                                         }
1720
1721                                         # Update associated rev id. This should be done by $logEntry->insert() earlier,
1722                                         # but setAssociatedRevId() wasn't called at that point yet...
1723                                         $logParams = $logEntry->getParameters();
1724                                         $logParams['associated_rev_id'] = $logEntry->getAssociatedRevId();
1725                                         $update = [ 'log_params' => LogEntryBase::makeParamBlob( $logParams ) ];
1726                                         if ( $updateLogPage ) {
1727                                                 # Also log page, in case where we just created it above
1728                                                 $update['log_page'] = $updateLogPage;
1729                                         }
1730                                         $this->getRepo()->getMasterDB()->update(
1731                                                 'logging',
1732                                                 $update,
1733                                                 [ 'log_id' => $logId ],
1734                                                 $fname
1735                                         );
1736                                         $this->getRepo()->getMasterDB()->insert(
1737                                                 'log_search',
1738                                                 [
1739                                                         'ls_field' => 'associated_rev_id',
1740                                                         'ls_value' => $logEntry->getAssociatedRevId(),
1741                                                         'ls_log_id' => $logId,
1742                                                 ],
1743                                                 $fname
1744                                         );
1745
1746                                         # Add change tags, if any
1747                                         if ( $tags ) {
1748                                                 $logEntry->setTags( $tags );
1749                                         }
1750
1751                                         # Uploads can be patrolled
1752                                         $logEntry->setIsPatrollable( true );
1753
1754                                         # Now that the log entry is up-to-date, make an RC entry.
1755                                         $logEntry->publish( $logId );
1756
1757                                         # Run hook for other updates (typically more cache purging)
1758                                         Hooks::run( 'FileUpload', [ $this, $reupload, !$newPageContent ] );
1759
1760                                         if ( $reupload ) {
1761                                                 # Delete old thumbnails
1762                                                 $this->purgeThumbnails();
1763                                                 # Remove the old file from the CDN cache
1764                                                 DeferredUpdates::addUpdate(
1765                                                         new CdnCacheUpdate( [ $this->getUrl() ] ),
1766                                                         DeferredUpdates::PRESEND
1767                                                 );
1768                                         } else {
1769                                                 # Update backlink pages pointing to this title if created
1770                                                 LinksUpdate::queueRecursiveJobsForTable(
1771                                                         $this->getTitle(),
1772                                                         'imagelinks',
1773                                                         'upload-image',
1774                                                         $user->getName()
1775                                                 );
1776                                         }
1777
1778                                         $this->prerenderThumbnails();
1779                                 }
1780                         ),
1781                         DeferredUpdates::PRESEND
1782                 );
1783
1784                 if ( !$reupload ) {
1785                         # This is a new file, so update the image count
1786                         DeferredUpdates::addUpdate( SiteStatsUpdate::factory( [ 'images' => 1 ] ) );
1787                 }
1788
1789                 # Invalidate cache for all pages using this file
1790                 DeferredUpdates::addUpdate(
1791                         new HTMLCacheUpdate( $this->getTitle(), 'imagelinks', 'file-upload' )
1792                 );
1793
1794                 return Status::newGood();
1795         }
1796
1797         /**
1798          * Move or copy a file to its public location. If a file exists at the
1799          * destination, move it to an archive. Returns a Status object with
1800          * the archive name in the "value" member on success.
1801          *
1802          * The archive name should be passed through to recordUpload for database
1803          * registration.
1804          *
1805          * @param string|FSFile $src Local filesystem path or virtual URL to the source image
1806          * @param int $flags A bitwise combination of:
1807          *     File::DELETE_SOURCE    Delete the source file, i.e. move rather than copy
1808          * @param array $options Optional additional parameters
1809          * @return Status On success, the value member contains the
1810          *     archive name, or an empty string if it was a new file.
1811          */
1812         function publish( $src, $flags = 0, array $options = [] ) {
1813                 return $this->publishTo( $src, $this->getRel(), $flags, $options );
1814         }
1815
1816         /**
1817          * Move or copy a file to a specified location. Returns a Status
1818          * object with the archive name in the "value" member on success.
1819          *
1820          * The archive name should be passed through to recordUpload for database
1821          * registration.
1822          *
1823          * @param string|FSFile $src Local filesystem path or virtual URL to the source image
1824          * @param string $dstRel Target relative path
1825          * @param int $flags A bitwise combination of:
1826          *     File::DELETE_SOURCE    Delete the source file, i.e. move rather than copy
1827          * @param array $options Optional additional parameters
1828          * @return Status On success, the value member contains the
1829          *     archive name, or an empty string if it was a new file.
1830          */
1831         function publishTo( $src, $dstRel, $flags = 0, array $options = [] ) {
1832                 $srcPath = ( $src instanceof FSFile ) ? $src->getPath() : $src;
1833
1834                 $repo = $this->getRepo();
1835                 if ( $repo->getReadOnlyReason() !== false ) {
1836                         return $this->readOnlyFatalStatus();
1837                 }
1838
1839                 $this->lock();
1840
1841                 $archiveName = wfTimestamp( TS_MW ) . '!' . $this->getName();
1842                 $archiveRel = $this->getArchiveRel( $archiveName );
1843
1844                 if ( $repo->hasSha1Storage() ) {
1845                         $sha1 = FileRepo::isVirtualUrl( $srcPath )
1846                                 ? $repo->getFileSha1( $srcPath )
1847                                 : FSFile::getSha1Base36FromPath( $srcPath );
1848                         /** @var FileBackendDBRepoWrapper $wrapperBackend */
1849                         $wrapperBackend = $repo->getBackend();
1850                         $dst = $wrapperBackend->getPathForSHA1( $sha1 );
1851                         $status = $repo->quickImport( $src, $dst );
1852                         if ( $flags & File::DELETE_SOURCE ) {
1853                                 unlink( $srcPath );
1854                         }
1855
1856                         if ( $this->exists() ) {
1857                                 $status->value = $archiveName;
1858                         }
1859                 } else {
1860                         $flags = $flags & File::DELETE_SOURCE ? LocalRepo::DELETE_SOURCE : 0;
1861                         $status = $repo->publish( $srcPath, $dstRel, $archiveRel, $flags, $options );
1862
1863                         if ( $status->value == 'new' ) {
1864                                 $status->value = '';
1865                         } else {
1866                                 $status->value = $archiveName;
1867                         }
1868                 }
1869
1870                 $this->unlock();
1871                 return $status;
1872         }
1873
1874         /** getLinksTo inherited */
1875         /** getExifData inherited */
1876         /** isLocal inherited */
1877         /** wasDeleted inherited */
1878
1879         /**
1880          * Move file to the new title
1881          *
1882          * Move current, old version and all thumbnails
1883          * to the new filename. Old file is deleted.
1884          *
1885          * Cache purging is done; checks for validity
1886          * and logging are caller's responsibility
1887          *
1888          * @param Title $target New file name
1889          * @return Status
1890          */
1891         function move( $target ) {
1892                 if ( $this->getRepo()->getReadOnlyReason() !== false ) {
1893                         return $this->readOnlyFatalStatus();
1894                 }
1895
1896                 wfDebugLog( 'imagemove', "Got request to move {$this->name} to " . $target->getText() );
1897                 $batch = new LocalFileMoveBatch( $this, $target );
1898
1899                 $this->lock();
1900                 $batch->addCurrent();
1901                 $archiveNames = $batch->addOlds();
1902                 $status = $batch->execute();
1903                 $this->unlock();
1904
1905                 wfDebugLog( 'imagemove', "Finished moving {$this->name}" );
1906
1907                 // Purge the source and target files...
1908                 $oldTitleFile = wfLocalFile( $this->title );
1909                 $newTitleFile = wfLocalFile( $target );
1910                 // To avoid slow purges in the transaction, move them outside...
1911                 DeferredUpdates::addUpdate(
1912                         new AutoCommitUpdate(
1913                                 $this->getRepo()->getMasterDB(),
1914                                 __METHOD__,
1915                                 function () use ( $oldTitleFile, $newTitleFile, $archiveNames ) {
1916                                         $oldTitleFile->purgeEverything();
1917                                         foreach ( $archiveNames as $archiveName ) {
1918                                                 $oldTitleFile->purgeOldThumbnails( $archiveName );
1919                                         }
1920                                         $newTitleFile->purgeEverything();
1921                                 }
1922                         ),
1923                         DeferredUpdates::PRESEND
1924                 );
1925
1926                 if ( $status->isOK() ) {
1927                         // Now switch the object
1928                         $this->title = $target;
1929                         // Force regeneration of the name and hashpath
1930                         unset( $this->name );
1931                         unset( $this->hashPath );
1932                 }
1933
1934                 return $status;
1935         }
1936
1937         /**
1938          * Delete all versions of the file.
1939          *
1940          * Moves the files into an archive directory (or deletes them)
1941          * and removes the database rows.
1942          *
1943          * Cache purging is done; logging is caller's responsibility.
1944          *
1945          * @param string $reason
1946          * @param bool $suppress
1947          * @param User|null $user
1948          * @return Status
1949          */
1950         function delete( $reason, $suppress = false, $user = null ) {
1951                 if ( $this->getRepo()->getReadOnlyReason() !== false ) {
1952                         return $this->readOnlyFatalStatus();
1953                 }
1954
1955                 $batch = new LocalFileDeleteBatch( $this, $reason, $suppress, $user );
1956
1957                 $this->lock();
1958                 $batch->addCurrent();
1959                 // Get old version relative paths
1960                 $archiveNames = $batch->addOlds();
1961                 $status = $batch->execute();
1962                 $this->unlock();
1963
1964                 if ( $status->isOK() ) {
1965                         DeferredUpdates::addUpdate( SiteStatsUpdate::factory( [ 'images' => -1 ] ) );
1966                 }
1967
1968                 // To avoid slow purges in the transaction, move them outside...
1969                 DeferredUpdates::addUpdate(
1970                         new AutoCommitUpdate(
1971                                 $this->getRepo()->getMasterDB(),
1972                                 __METHOD__,
1973                                 function () use ( $archiveNames ) {
1974                                         $this->purgeEverything();
1975                                         foreach ( $archiveNames as $archiveName ) {
1976                                                 $this->purgeOldThumbnails( $archiveName );
1977                                         }
1978                                 }
1979                         ),
1980                         DeferredUpdates::PRESEND
1981                 );
1982
1983                 // Purge the CDN
1984                 $purgeUrls = [];
1985                 foreach ( $archiveNames as $archiveName ) {
1986                         $purgeUrls[] = $this->getArchiveUrl( $archiveName );
1987                 }
1988                 DeferredUpdates::addUpdate( new CdnCacheUpdate( $purgeUrls ), DeferredUpdates::PRESEND );
1989
1990                 return $status;
1991         }
1992
1993         /**
1994          * Delete an old version of the file.
1995          *
1996          * Moves the file into an archive directory (or deletes it)
1997          * and removes the database row.
1998          *
1999          * Cache purging is done; logging is caller's responsibility.
2000          *
2001          * @param string $archiveName
2002          * @param string $reason
2003          * @param bool $suppress
2004          * @param User|null $user
2005          * @throws MWException Exception on database or file store failure
2006          * @return Status
2007          */
2008         function deleteOld( $archiveName, $reason, $suppress = false, $user = null ) {
2009                 if ( $this->getRepo()->getReadOnlyReason() !== false ) {
2010                         return $this->readOnlyFatalStatus();
2011                 }
2012
2013                 $batch = new LocalFileDeleteBatch( $this, $reason, $suppress, $user );
2014
2015                 $this->lock();
2016                 $batch->addOld( $archiveName );
2017                 $status = $batch->execute();
2018                 $this->unlock();
2019
2020                 $this->purgeOldThumbnails( $archiveName );
2021                 if ( $status->isOK() ) {
2022                         $this->purgeDescription();
2023                 }
2024
2025                 DeferredUpdates::addUpdate(
2026                         new CdnCacheUpdate( [ $this->getArchiveUrl( $archiveName ) ] ),
2027                         DeferredUpdates::PRESEND
2028                 );
2029
2030                 return $status;
2031         }
2032
2033         /**
2034          * Restore all or specified deleted revisions to the given file.
2035          * Permissions and logging are left to the caller.
2036          *
2037          * May throw database exceptions on error.
2038          *
2039          * @param array $versions Set of record ids of deleted items to restore,
2040          *   or empty to restore all revisions.
2041          * @param bool $unsuppress
2042          * @return Status
2043          */
2044         function restore( $versions = [], $unsuppress = false ) {
2045                 if ( $this->getRepo()->getReadOnlyReason() !== false ) {
2046                         return $this->readOnlyFatalStatus();
2047                 }
2048
2049                 $batch = new LocalFileRestoreBatch( $this, $unsuppress );
2050
2051                 $this->lock();
2052                 if ( !$versions ) {
2053                         $batch->addAll();
2054                 } else {
2055                         $batch->addIds( $versions );
2056                 }
2057                 $status = $batch->execute();
2058                 if ( $status->isGood() ) {
2059                         $cleanupStatus = $batch->cleanup();
2060                         $cleanupStatus->successCount = 0;
2061                         $cleanupStatus->failCount = 0;
2062                         $status->merge( $cleanupStatus );
2063                 }
2064
2065                 $this->unlock();
2066                 return $status;
2067         }
2068
2069         /** isMultipage inherited */
2070         /** pageCount inherited */
2071         /** scaleHeight inherited */
2072         /** getImageSize inherited */
2073
2074         /**
2075          * Get the URL of the file description page.
2076          * @return string
2077          */
2078         function getDescriptionUrl() {
2079                 return $this->title->getLocalURL();
2080         }
2081
2082         /**
2083          * Get the HTML text of the description page
2084          * This is not used by ImagePage for local files, since (among other things)
2085          * it skips the parser cache.
2086          *
2087          * @param Language|null $lang What language to get description in (Optional)
2088          * @return string|false
2089          */
2090         function getDescriptionText( Language $lang = null ) {
2091                 $store = MediaWikiServices::getInstance()->getRevisionStore();
2092                 $revision = $store->getRevisionByTitle( $this->title, 0, Revision::READ_NORMAL );
2093                 if ( !$revision ) {
2094                         return false;
2095                 }
2096
2097                 $renderer = MediaWikiServices::getInstance()->getRevisionRenderer();
2098                 $rendered = $renderer->getRenderedRevision( $revision, new ParserOptions( null, $lang ) );
2099
2100                 if ( !$rendered ) {
2101                         // audience check failed
2102                         return false;
2103                 }
2104
2105                 $pout = $rendered->getRevisionParserOutput();
2106                 return $pout->getText();
2107         }
2108
2109         /**
2110          * @param int $audience
2111          * @param User|null $user
2112          * @return string
2113          */
2114         function getDescription( $audience = self::FOR_PUBLIC, User $user = null ) {
2115                 $this->load();
2116                 if ( $audience == self::FOR_PUBLIC && $this->isDeleted( self::DELETED_COMMENT ) ) {
2117                         return '';
2118                 } elseif ( $audience == self::FOR_THIS_USER
2119                         && !$this->userCan( self::DELETED_COMMENT, $user )
2120                 ) {
2121                         return '';
2122                 } else {
2123                         return $this->description;
2124                 }
2125         }
2126
2127         /**
2128          * @return bool|string
2129          */
2130         function getTimestamp() {
2131                 $this->load();
2132
2133                 return $this->timestamp;
2134         }
2135
2136         /**
2137          * @return bool|string
2138          */
2139         public function getDescriptionTouched() {
2140                 // The DB lookup might return false, e.g. if the file was just deleted, or the shared DB repo
2141                 // itself gets it from elsewhere. To avoid repeating the DB lookups in such a case, we
2142                 // need to differentiate between null (uninitialized) and false (failed to load).
2143                 if ( $this->descriptionTouched === null ) {
2144                         $cond = [
2145                                 'page_namespace' => $this->title->getNamespace(),
2146                                 'page_title' => $this->title->getDBkey()
2147                         ];
2148                         $touched = $this->repo->getReplicaDB()->selectField( 'page', 'page_touched', $cond, __METHOD__ );
2149                         $this->descriptionTouched = $touched ? wfTimestamp( TS_MW, $touched ) : false;
2150                 }
2151
2152                 return $this->descriptionTouched;
2153         }
2154
2155         /**
2156          * @return string
2157          */
2158         function getSha1() {
2159                 $this->load();
2160                 // Initialise now if necessary
2161                 if ( $this->sha1 == '' && $this->fileExists ) {
2162                         $this->lock();
2163
2164                         $this->sha1 = $this->repo->getFileSha1( $this->getPath() );
2165                         if ( !wfReadOnly() && strval( $this->sha1 ) != '' ) {
2166                                 $dbw = $this->repo->getMasterDB();
2167                                 $dbw->update( 'image',
2168                                         [ 'img_sha1' => $this->sha1 ],
2169                                         [ 'img_name' => $this->getName() ],
2170                                         __METHOD__ );
2171                                 $this->invalidateCache();
2172                         }
2173
2174                         $this->unlock();
2175                 }
2176
2177                 return $this->sha1;
2178         }
2179
2180         /**
2181          * @return bool Whether to cache in RepoGroup (this avoids OOMs)
2182          */
2183         function isCacheable() {
2184                 $this->load();
2185
2186                 // If extra data (metadata) was not loaded then it must have been large
2187                 return $this->extraDataLoaded
2188                         && strlen( serialize( $this->metadata ) ) <= self::CACHE_FIELD_MAX_LEN;
2189         }
2190
2191         /**
2192          * @return Status
2193          * @since 1.28
2194          */
2195         public function acquireFileLock() {
2196                 return Status::wrap( $this->getRepo()->getBackend()->lockFiles(
2197                         [ $this->getPath() ], LockManager::LOCK_EX, 10
2198                 ) );
2199         }
2200
2201         /**
2202          * @return Status
2203          * @since 1.28
2204          */
2205         public function releaseFileLock() {
2206                 return Status::wrap( $this->getRepo()->getBackend()->unlockFiles(
2207                         [ $this->getPath() ], LockManager::LOCK_EX
2208                 ) );
2209         }
2210
2211         /**
2212          * Start an atomic DB section and lock the image for update
2213          * or increments a reference counter if the lock is already held
2214          *
2215          * This method should not be used outside of LocalFile/LocalFile*Batch
2216          *
2217          * @throws LocalFileLockError Throws an error if the lock was not acquired
2218          * @return bool Whether the file lock owns/spawned the DB transaction
2219          */
2220         public function lock() {
2221                 if ( !$this->locked ) {
2222                         $logger = LoggerFactory::getInstance( 'LocalFile' );
2223
2224                         $dbw = $this->repo->getMasterDB();
2225                         $makesTransaction = !$dbw->trxLevel();
2226                         $dbw->startAtomic( self::ATOMIC_SECTION_LOCK );
2227                         // T56736: use simple lock to handle when the file does not exist.
2228                         // SELECT FOR UPDATE prevents changes, not other SELECTs with FOR UPDATE.
2229                         // Also, that would cause contention on INSERT of similarly named rows.
2230                         $status = $this->acquireFileLock(); // represents all versions of the file
2231                         if ( !$status->isGood() ) {
2232                                 $dbw->endAtomic( self::ATOMIC_SECTION_LOCK );
2233                                 $logger->warning( "Failed to lock '{file}'", [ 'file' => $this->name ] );
2234
2235                                 throw new LocalFileLockError( $status );
2236                         }
2237                         // Release the lock *after* commit to avoid row-level contention.
2238                         // Make sure it triggers on rollback() as well as commit() (T132921).
2239                         $dbw->onTransactionResolution(
2240                                 function () use ( $logger ) {
2241                                         $status = $this->releaseFileLock();
2242                                         if ( !$status->isGood() ) {
2243                                                 $logger->error( "Failed to unlock '{file}'", [ 'file' => $this->name ] );
2244                                         }
2245                                 },
2246                                 __METHOD__
2247                         );
2248                         // Callers might care if the SELECT snapshot is safely fresh
2249                         $this->lockedOwnTrx = $makesTransaction;
2250                 }
2251
2252                 $this->locked++;
2253
2254                 return $this->lockedOwnTrx;
2255         }
2256
2257         /**
2258          * Decrement the lock reference count and end the atomic section if it reaches zero
2259          *
2260          * This method should not be used outside of LocalFile/LocalFile*Batch
2261          *
2262          * The commit and loc release will happen when no atomic sections are active, which
2263          * may happen immediately or at some point after calling this
2264          */
2265         public function unlock() {
2266                 if ( $this->locked ) {
2267                         --$this->locked;
2268                         if ( !$this->locked ) {
2269                                 $dbw = $this->repo->getMasterDB();
2270                                 $dbw->endAtomic( self::ATOMIC_SECTION_LOCK );
2271                                 $this->lockedOwnTrx = false;
2272                         }
2273                 }
2274         }
2275
2276         /**
2277          * @return Status
2278          */
2279         protected function readOnlyFatalStatus() {
2280                 return $this->getRepo()->newFatal( 'filereadonlyerror', $this->getName(),
2281                         $this->getRepo()->getName(), $this->getRepo()->getReadOnlyReason() );
2282         }
2283
2284         /**
2285          * Clean up any dangling locks
2286          */
2287         function __destruct() {
2288                 $this->unlock();
2289         }
2290 } // LocalFile class
2291
2292 # ------------------------------------------------------------------------------
2293
2294 /**
2295  * Helper class for file deletion
2296  * @ingroup FileAbstraction
2297  */
2298 class LocalFileDeleteBatch {
2299         /** @var LocalFile */
2300         private $file;
2301
2302         /** @var string */
2303         private $reason;
2304
2305         /** @var array */
2306         private $srcRels = [];
2307
2308         /** @var array */
2309         private $archiveUrls = [];
2310
2311         /** @var array Items to be processed in the deletion batch */
2312         private $deletionBatch;
2313
2314         /** @var bool Whether to suppress all suppressable fields when deleting */
2315         private $suppress;
2316
2317         /** @var Status */
2318         private $status;
2319
2320         /** @var User */
2321         private $user;
2322
2323         /**
2324          * @param File $file
2325          * @param string $reason
2326          * @param bool $suppress
2327          * @param User|null $user
2328          */
2329         function __construct( File $file, $reason = '', $suppress = false, $user = null ) {
2330                 $this->file = $file;
2331                 $this->reason = $reason;
2332                 $this->suppress = $suppress;
2333                 if ( $user ) {
2334                         $this->user = $user;
2335                 } else {
2336                         global $wgUser;
2337                         $this->user = $wgUser;
2338                 }
2339                 $this->status = $file->repo->newGood();
2340         }
2341
2342         public function addCurrent() {
2343                 $this->srcRels['.'] = $this->file->getRel();
2344         }
2345
2346         /**
2347          * @param string $oldName
2348          */
2349         public function addOld( $oldName ) {
2350                 $this->srcRels[$oldName] = $this->file->getArchiveRel( $oldName );
2351                 $this->archiveUrls[] = $this->file->getArchiveUrl( $oldName );
2352         }
2353
2354         /**
2355          * Add the old versions of the image to the batch
2356          * @return string[] List of archive names from old versions
2357          */
2358         public function addOlds() {
2359                 $archiveNames = [];
2360
2361                 $dbw = $this->file->repo->getMasterDB();
2362                 $result = $dbw->select( 'oldimage',
2363                         [ 'oi_archive_name' ],
2364                         [ 'oi_name' => $this->file->getName() ],
2365                         __METHOD__
2366                 );
2367
2368                 foreach ( $result as $row ) {
2369                         $this->addOld( $row->oi_archive_name );
2370                         $archiveNames[] = $row->oi_archive_name;
2371                 }
2372
2373                 return $archiveNames;
2374         }
2375
2376         /**
2377          * @return array
2378          */
2379         protected function getOldRels() {
2380                 if ( !isset( $this->srcRels['.'] ) ) {
2381                         $oldRels =& $this->srcRels;
2382                         $deleteCurrent = false;
2383                 } else {
2384                         $oldRels = $this->srcRels;
2385                         unset( $oldRels['.'] );
2386                         $deleteCurrent = true;
2387                 }
2388
2389                 return [ $oldRels, $deleteCurrent ];
2390         }
2391
2392         /**
2393          * @return array
2394          */
2395         protected function getHashes() {
2396                 $hashes = [];
2397                 list( $oldRels, $deleteCurrent ) = $this->getOldRels();
2398
2399                 if ( $deleteCurrent ) {
2400                         $hashes['.'] = $this->file->getSha1();
2401                 }
2402
2403                 if ( count( $oldRels ) ) {
2404                         $dbw = $this->file->repo->getMasterDB();
2405                         $res = $dbw->select(
2406                                 'oldimage',
2407                                 [ 'oi_archive_name', 'oi_sha1' ],
2408                                 [ 'oi_archive_name' => array_keys( $oldRels ),
2409                                         'oi_name' => $this->file->getName() ], // performance
2410                                 __METHOD__
2411                         );
2412
2413                         foreach ( $res as $row ) {
2414                                 if ( rtrim( $row->oi_sha1, "\0" ) === '' ) {
2415                                         // Get the hash from the file
2416                                         $oldUrl = $this->file->getArchiveVirtualUrl( $row->oi_archive_name );
2417                                         $props = $this->file->repo->getFileProps( $oldUrl );
2418
2419                                         if ( $props['fileExists'] ) {
2420                                                 // Upgrade the oldimage row
2421                                                 $dbw->update( 'oldimage',
2422                                                         [ 'oi_sha1' => $props['sha1'] ],
2423                                                         [ 'oi_name' => $this->file->getName(), 'oi_archive_name' => $row->oi_archive_name ],
2424                                                         __METHOD__ );
2425                                                 $hashes[$row->oi_archive_name] = $props['sha1'];
2426                                         } else {
2427                                                 $hashes[$row->oi_archive_name] = false;
2428                                         }
2429                                 } else {
2430                                         $hashes[$row->oi_archive_name] = $row->oi_sha1;
2431                                 }
2432                         }
2433                 }
2434
2435                 $missing = array_diff_key( $this->srcRels, $hashes );
2436
2437                 foreach ( $missing as $name => $rel ) {
2438                         $this->status->error( 'filedelete-old-unregistered', $name );
2439                 }
2440
2441                 foreach ( $hashes as $name => $hash ) {
2442                         if ( !$hash ) {
2443                                 $this->status->error( 'filedelete-missing', $this->srcRels[$name] );
2444                                 unset( $hashes[$name] );
2445                         }
2446                 }
2447
2448                 return $hashes;
2449         }
2450
2451         protected function doDBInserts() {
2452                 global $wgActorTableSchemaMigrationStage;
2453
2454                 $now = time();
2455                 $dbw = $this->file->repo->getMasterDB();
2456
2457                 $commentStore = MediaWikiServices::getInstance()->getCommentStore();
2458                 $actorMigration = ActorMigration::newMigration();
2459
2460                 $encTimestamp = $dbw->addQuotes( $dbw->timestamp( $now ) );
2461                 $encUserId = $dbw->addQuotes( $this->user->getId() );
2462                 $encGroup = $dbw->addQuotes( 'deleted' );
2463                 $ext = $this->file->getExtension();
2464                 $dotExt = $ext === '' ? '' : ".$ext";
2465                 $encExt = $dbw->addQuotes( $dotExt );
2466                 list( $oldRels, $deleteCurrent ) = $this->getOldRels();
2467
2468                 // Bitfields to further suppress the content
2469                 if ( $this->suppress ) {
2470                         $bitfield = Revision::SUPPRESSED_ALL;
2471                 } else {
2472                         $bitfield = 'oi_deleted';
2473                 }
2474
2475                 if ( $deleteCurrent ) {
2476                         $tables = [ 'image' ];
2477                         $fields = [
2478                                 'fa_storage_group' => $encGroup,
2479                                 'fa_storage_key' => $dbw->conditional(
2480                                         [ 'img_sha1' => '' ],
2481                                         $dbw->addQuotes( '' ),
2482                                         $dbw->buildConcat( [ "img_sha1", $encExt ] )
2483                                 ),
2484                                 'fa_deleted_user' => $encUserId,
2485                                 'fa_deleted_timestamp' => $encTimestamp,
2486                                 'fa_deleted' => $this->suppress ? $bitfield : 0,
2487                                 'fa_name' => 'img_name',
2488                                 'fa_archive_name' => 'NULL',
2489                                 'fa_size' => 'img_size',
2490                                 'fa_width' => 'img_width',
2491                                 'fa_height' => 'img_height',
2492                                 'fa_metadata' => 'img_metadata',
2493                                 'fa_bits' => 'img_bits',
2494                                 'fa_media_type' => 'img_media_type',
2495                                 'fa_major_mime' => 'img_major_mime',
2496                                 'fa_minor_mime' => 'img_minor_mime',
2497                                 'fa_description_id' => 'img_description_id',
2498                                 'fa_timestamp' => 'img_timestamp',
2499                                 'fa_sha1' => 'img_sha1'
2500                         ];
2501                         $joins = [];
2502
2503                         $fields += array_map(
2504                                 [ $dbw, 'addQuotes' ],
2505                                 $commentStore->insert( $dbw, 'fa_deleted_reason', $this->reason )
2506                         );
2507
2508                         if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_OLD ) {
2509                                 $fields['fa_user'] = 'img_user';
2510                                 $fields['fa_user_text'] = 'img_user_text';
2511                         }
2512                         if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_NEW ) {
2513                                 $fields['fa_actor'] = 'img_actor';
2514                         }
2515
2516                         if (
2517                                 ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_BOTH ) === SCHEMA_COMPAT_WRITE_BOTH
2518                         ) {
2519                                 // Upgrade any rows that are still old-style. Otherwise an upgrade
2520                                 // might be missed if a deletion happens while the migration script
2521                                 // is running.
2522                                 $res = $dbw->select(
2523                                         [ 'image' ],
2524                                         [ 'img_name', 'img_user', 'img_user_text' ],
2525                                         [ 'img_name' => $this->file->getName(), 'img_actor' => 0 ],
2526                                         __METHOD__
2527                                 );
2528                                 foreach ( $res as $row ) {
2529                                         $actorId = User::newFromAnyId( $row->img_user, $row->img_user_text, null )->getActorId( $dbw );
2530                                         $dbw->update(
2531                                                 'image',
2532                                                 [ 'img_actor' => $actorId ],
2533                                                 [ 'img_name' => $row->img_name, 'img_actor' => 0 ],
2534                                                 __METHOD__
2535                                         );
2536                                 }
2537                         }
2538
2539                         $dbw->insertSelect( 'filearchive', $tables, $fields,
2540                                 [ 'img_name' => $this->file->getName() ], __METHOD__, [], [], $joins );
2541                 }
2542
2543                 if ( count( $oldRels ) ) {
2544                         $fileQuery = OldLocalFile::getQueryInfo();
2545                         $res = $dbw->select(
2546                                 $fileQuery['tables'],
2547                                 $fileQuery['fields'],
2548                                 [
2549                                         'oi_name' => $this->file->getName(),
2550                                         'oi_archive_name' => array_keys( $oldRels )
2551                                 ],
2552                                 __METHOD__,
2553                                 [ 'FOR UPDATE' ],
2554                                 $fileQuery['joins']
2555                         );
2556                         $rowsInsert = [];
2557                         if ( $res->numRows() ) {
2558                                 $reason = $commentStore->createComment( $dbw, $this->reason );
2559                                 foreach ( $res as $row ) {
2560                                         $comment = $commentStore->getComment( 'oi_description', $row );
2561                                         $user = User::newFromAnyId( $row->oi_user, $row->oi_user_text, $row->oi_actor );
2562                                         $rowsInsert[] = [
2563                                                 // Deletion-specific fields
2564                                                 'fa_storage_group' => 'deleted',
2565                                                 'fa_storage_key' => ( $row->oi_sha1 === '' )
2566                                                 ? ''
2567                                                 : "{$row->oi_sha1}{$dotExt}",
2568                                                 'fa_deleted_user' => $this->user->getId(),
2569                                                 'fa_deleted_timestamp' => $dbw->timestamp( $now ),
2570                                                 // Counterpart fields
2571                                                 'fa_deleted' => $this->suppress ? $bitfield : $row->oi_deleted,
2572                                                 'fa_name' => $row->oi_name,
2573                                                 'fa_archive_name' => $row->oi_archive_name,
2574                                                 'fa_size' => $row->oi_size,
2575                                                 'fa_width' => $row->oi_width,
2576                                                 'fa_height' => $row->oi_height,
2577                                                 'fa_metadata' => $row->oi_metadata,
2578                                                 'fa_bits' => $row->oi_bits,
2579                                                 'fa_media_type' => $row->oi_media_type,
2580                                                 'fa_major_mime' => $row->oi_major_mime,
2581                                                 'fa_minor_mime' => $row->oi_minor_mime,
2582                                                 'fa_timestamp' => $row->oi_timestamp,
2583                                                 'fa_sha1' => $row->oi_sha1
2584                                         ] + $commentStore->insert( $dbw, 'fa_deleted_reason', $reason )
2585                                         + $commentStore->insert( $dbw, 'fa_description', $comment )
2586                                         + $actorMigration->getInsertValues( $dbw, 'fa_user', $user );
2587                                 }
2588                         }
2589
2590                         $dbw->insert( 'filearchive', $rowsInsert, __METHOD__ );
2591                 }
2592         }
2593
2594         function doDBDeletes() {
2595                 $dbw = $this->file->repo->getMasterDB();
2596                 list( $oldRels, $deleteCurrent ) = $this->getOldRels();
2597
2598                 if ( count( $oldRels ) ) {
2599                         $dbw->delete( 'oldimage',
2600                                 [
2601                                         'oi_name' => $this->file->getName(),
2602                                         'oi_archive_name' => array_keys( $oldRels )
2603                                 ], __METHOD__ );
2604                 }
2605
2606                 if ( $deleteCurrent ) {
2607                         $dbw->delete( 'image', [ 'img_name' => $this->file->getName() ], __METHOD__ );
2608                 }
2609         }
2610
2611         /**
2612          * Run the transaction
2613          * @return Status
2614          */
2615         public function execute() {
2616                 $repo = $this->file->getRepo();
2617                 $this->file->lock();
2618
2619                 // Prepare deletion batch
2620                 $hashes = $this->getHashes();
2621                 $this->deletionBatch = [];
2622                 $ext = $this->file->getExtension();
2623                 $dotExt = $ext === '' ? '' : ".$ext";
2624
2625                 foreach ( $this->srcRels as $name => $srcRel ) {
2626                         // Skip files that have no hash (e.g. missing DB record, or sha1 field and file source)
2627                         if ( isset( $hashes[$name] ) ) {
2628                                 $hash = $hashes[$name];
2629                                 $key = $hash . $dotExt;
2630                                 $dstRel = $repo->getDeletedHashPath( $key ) . $key;
2631                                 $this->deletionBatch[$name] = [ $srcRel, $dstRel ];
2632                         }
2633                 }
2634
2635                 if ( !$repo->hasSha1Storage() ) {
2636                         // Removes non-existent file from the batch, so we don't get errors.
2637                         // This also handles files in the 'deleted' zone deleted via revision deletion.
2638                         $checkStatus = $this->removeNonexistentFiles( $this->deletionBatch );
2639                         if ( !$checkStatus->isGood() ) {
2640                                 $this->status->merge( $checkStatus );
2641                                 return $this->status;
2642                         }
2643                         $this->deletionBatch = $checkStatus->value;
2644
2645                         // Execute the file deletion batch
2646                         $status = $this->file->repo->deleteBatch( $this->deletionBatch );
2647                         if ( !$status->isGood() ) {
2648                                 $this->status->merge( $status );
2649                         }
2650                 }
2651
2652                 if ( !$this->status->isOK() ) {
2653                         // Critical file deletion error; abort
2654                         $this->file->unlock();
2655
2656                         return $this->status;
2657                 }
2658
2659                 // Copy the image/oldimage rows to filearchive
2660                 $this->doDBInserts();
2661                 // Delete image/oldimage rows
2662                 $this->doDBDeletes();
2663
2664                 // Commit and return
2665                 $this->file->unlock();
2666
2667                 return $this->status;
2668         }
2669
2670         /**
2671          * Removes non-existent files from a deletion batch.
2672          * @param array $batch
2673          * @return Status
2674          */
2675         protected function removeNonexistentFiles( $batch ) {
2676                 $files = $newBatch = [];
2677
2678                 foreach ( $batch as $batchItem ) {
2679                         list( $src, ) = $batchItem;
2680                         $files[$src] = $this->file->repo->getVirtualUrl( 'public' ) . '/' . rawurlencode( $src );
2681                 }
2682
2683                 $result = $this->file->repo->fileExistsBatch( $files );
2684                 if ( in_array( null, $result, true ) ) {
2685                         return Status::newFatal( 'backend-fail-internal',
2686                                 $this->file->repo->getBackend()->getName() );
2687                 }
2688
2689                 foreach ( $batch as $batchItem ) {
2690                         if ( $result[$batchItem[0]] ) {
2691                                 $newBatch[] = $batchItem;
2692                         }
2693                 }
2694
2695                 return Status::newGood( $newBatch );
2696         }
2697 }
2698
2699 # ------------------------------------------------------------------------------
2700
2701 /**
2702  * Helper class for file undeletion
2703  * @ingroup FileAbstraction
2704  */
2705 class LocalFileRestoreBatch {
2706         /** @var LocalFile */
2707         private $file;
2708
2709         /** @var string[] List of file IDs to restore */
2710         private $cleanupBatch;
2711
2712         /** @var string[] List of file IDs to restore */
2713         private $ids;
2714
2715         /** @var bool Add all revisions of the file */
2716         private $all;
2717
2718         /** @var bool Whether to remove all settings for suppressed fields */
2719         private $unsuppress = false;
2720
2721         /**
2722          * @param File $file
2723          * @param bool $unsuppress
2724          */
2725         function __construct( File $file, $unsuppress = false ) {
2726                 $this->file = $file;
2727                 $this->cleanupBatch = [];
2728                 $this->ids = [];
2729                 $this->unsuppress = $unsuppress;
2730         }
2731
2732         /**
2733          * Add a file by ID
2734          * @param int $fa_id
2735          */
2736         public function addId( $fa_id ) {
2737                 $this->ids[] = $fa_id;
2738         }
2739
2740         /**
2741          * Add a whole lot of files by ID
2742          * @param int[] $ids
2743          */
2744         public function addIds( $ids ) {
2745                 $this->ids = array_merge( $this->ids, $ids );
2746         }
2747
2748         /**
2749          * Add all revisions of the file
2750          */
2751         public function addAll() {
2752                 $this->all = true;
2753         }
2754
2755         /**
2756          * Run the transaction, except the cleanup batch.
2757          * The cleanup batch should be run in a separate transaction, because it locks different
2758          * rows and there's no need to keep the image row locked while it's acquiring those locks
2759          * The caller may have its own transaction open.
2760          * So we save the batch and let the caller call cleanup()
2761          * @return Status
2762          */
2763         public function execute() {
2764                 /** @var Language */
2765                 global $wgLang;
2766
2767                 $repo = $this->file->getRepo();
2768                 if ( !$this->all && !$this->ids ) {
2769                         // Do nothing
2770                         return $repo->newGood();
2771                 }
2772
2773                 $lockOwnsTrx = $this->file->lock();
2774
2775                 $dbw = $this->file->repo->getMasterDB();
2776
2777                 $commentStore = MediaWikiServices::getInstance()->getCommentStore();
2778                 $actorMigration = ActorMigration::newMigration();
2779
2780                 $status = $this->file->repo->newGood();
2781
2782                 $exists = (bool)$dbw->selectField( 'image', '1',
2783                         [ 'img_name' => $this->file->getName() ],
2784                         __METHOD__,
2785                         // The lock() should already prevents changes, but this still may need
2786                         // to bypass any transaction snapshot. However, if lock() started the
2787                         // trx (which it probably did) then snapshot is post-lock and up-to-date.
2788                         $lockOwnsTrx ? [] : [ 'LOCK IN SHARE MODE' ]
2789                 );
2790
2791                 // Fetch all or selected archived revisions for the file,
2792                 // sorted from the most recent to the oldest.
2793                 $conditions = [ 'fa_name' => $this->file->getName() ];
2794
2795                 if ( !$this->all ) {
2796                         $conditions['fa_id'] = $this->ids;
2797                 }
2798
2799                 $arFileQuery = ArchivedFile::getQueryInfo();
2800                 $result = $dbw->select(
2801                         $arFileQuery['tables'],
2802                         $arFileQuery['fields'],
2803                         $conditions,
2804                         __METHOD__,
2805                         [ 'ORDER BY' => 'fa_timestamp DESC' ],
2806                         $arFileQuery['joins']
2807                 );
2808
2809                 $idsPresent = [];
2810                 $storeBatch = [];
2811                 $insertBatch = [];
2812                 $insertCurrent = false;
2813                 $deleteIds = [];
2814                 $first = true;
2815                 $archiveNames = [];
2816
2817                 foreach ( $result as $row ) {
2818                         $idsPresent[] = $row->fa_id;
2819
2820                         if ( $row->fa_name != $this->file->getName() ) {
2821                                 $status->error( 'undelete-filename-mismatch', $wgLang->timeanddate( $row->fa_timestamp ) );
2822                                 $status->failCount++;
2823                                 continue;
2824                         }
2825
2826                         if ( $row->fa_storage_key == '' ) {
2827                                 // Revision was missing pre-deletion
2828                                 $status->error( 'undelete-bad-store-key', $wgLang->timeanddate( $row->fa_timestamp ) );
2829                                 $status->failCount++;
2830                                 continue;
2831                         }
2832
2833                         $deletedRel = $repo->getDeletedHashPath( $row->fa_storage_key ) .
2834                                 $row->fa_storage_key;
2835                         $deletedUrl = $repo->getVirtualUrl() . '/deleted/' . $deletedRel;
2836
2837                         if ( isset( $row->fa_sha1 ) ) {
2838                                 $sha1 = $row->fa_sha1;
2839                         } else {
2840                                 // old row, populate from key
2841                                 $sha1 = LocalRepo::getHashFromKey( $row->fa_storage_key );
2842                         }
2843
2844                         # Fix leading zero
2845                         if ( strlen( $sha1 ) == 32 && $sha1[0] == '0' ) {
2846                                 $sha1 = substr( $sha1, 1 );
2847                         }
2848
2849                         if ( is_null( $row->fa_major_mime ) || $row->fa_major_mime == 'unknown'
2850                                 || is_null( $row->fa_minor_mime ) || $row->fa_minor_mime == 'unknown'
2851                                 || is_null( $row->fa_media_type ) || $row->fa_media_type == 'UNKNOWN'
2852                                 || is_null( $row->fa_metadata )
2853                         ) {
2854                                 // Refresh our metadata
2855                                 // Required for a new current revision; nice for older ones too. :)
2856                                 $props = RepoGroup::singleton()->getFileProps( $deletedUrl );
2857                         } else {
2858                                 $props = [
2859                                         'minor_mime' => $row->fa_minor_mime,
2860                                         'major_mime' => $row->fa_major_mime,
2861                                         'media_type' => $row->fa_media_type,
2862                                         'metadata' => $row->fa_metadata
2863                                 ];
2864                         }
2865
2866                         $comment = $commentStore->getComment( 'fa_description', $row );
2867                         $user = User::newFromAnyId( $row->fa_user, $row->fa_user_text, $row->fa_actor );
2868                         if ( $first && !$exists ) {
2869                                 // This revision will be published as the new current version
2870                                 $destRel = $this->file->getRel();
2871                                 $commentFields = $commentStore->insert( $dbw, 'img_description', $comment );
2872                                 $actorFields = $actorMigration->getInsertValues( $dbw, 'img_user', $user );
2873                                 $insertCurrent = [
2874                                         'img_name' => $row->fa_name,
2875                                         'img_size' => $row->fa_size,
2876                                         'img_width' => $row->fa_width,
2877                                         'img_height' => $row->fa_height,
2878                                         'img_metadata' => $props['metadata'],
2879                                         'img_bits' => $row->fa_bits,
2880                                         'img_media_type' => $props['media_type'],
2881                                         'img_major_mime' => $props['major_mime'],
2882                                         'img_minor_mime' => $props['minor_mime'],
2883                                         'img_timestamp' => $row->fa_timestamp,
2884                                         'img_sha1' => $sha1
2885                                 ] + $commentFields + $actorFields;
2886
2887                                 // The live (current) version cannot be hidden!
2888                                 if ( !$this->unsuppress && $row->fa_deleted ) {
2889                                         $status->fatal( 'undeleterevdel' );
2890                                         $this->file->unlock();
2891                                         return $status;
2892                                 }
2893                         } else {
2894                                 $archiveName = $row->fa_archive_name;
2895
2896                                 if ( $archiveName == '' ) {
2897                                         // This was originally a current version; we
2898                                         // have to devise a new archive name for it.
2899                                         // Format is <timestamp of archiving>!<name>
2900                                         $timestamp = wfTimestamp( TS_UNIX, $row->fa_deleted_timestamp );
2901
2902                                         do {
2903                                                 $archiveName = wfTimestamp( TS_MW, $timestamp ) . '!' . $row->fa_name;
2904                                                 $timestamp++;
2905                                         } while ( isset( $archiveNames[$archiveName] ) );
2906                                 }
2907
2908                                 $archiveNames[$archiveName] = true;
2909                                 $destRel = $this->file->getArchiveRel( $archiveName );
2910                                 $insertBatch[] = [
2911                                         'oi_name' => $row->fa_name,
2912                                         'oi_archive_name' => $archiveName,
2913                                         'oi_size' => $row->fa_size,
2914                                         'oi_width' => $row->fa_width,
2915                                         'oi_height' => $row->fa_height,
2916                                         'oi_bits' => $row->fa_bits,
2917                                         'oi_timestamp' => $row->fa_timestamp,
2918                                         'oi_metadata' => $props['metadata'],
2919                                         'oi_media_type' => $props['media_type'],
2920                                         'oi_major_mime' => $props['major_mime'],
2921                                         'oi_minor_mime' => $props['minor_mime'],
2922                                         'oi_deleted' => $this->unsuppress ? 0 : $row->fa_deleted,
2923                                         'oi_sha1' => $sha1
2924                                 ] + $commentStore->insert( $dbw, 'oi_description', $comment )
2925                                 + $actorMigration->getInsertValues( $dbw, 'oi_user', $user );
2926                         }
2927
2928                         $deleteIds[] = $row->fa_id;
2929
2930                         if ( !$this->unsuppress && $row->fa_deleted & File::DELETED_FILE ) {
2931                                 // private files can stay where they are
2932                                 $status->successCount++;
2933                         } else {
2934                                 $storeBatch[] = [ $deletedUrl, 'public', $destRel ];
2935                                 $this->cleanupBatch[] = $row->fa_storage_key;
2936                         }
2937
2938                         $first = false;
2939                 }
2940
2941                 unset( $result );
2942
2943                 // Add a warning to the status object for missing IDs
2944                 $missingIds = array_diff( $this->ids, $idsPresent );
2945
2946                 foreach ( $missingIds as $id ) {
2947                         $status->error( 'undelete-missing-filearchive', $id );
2948                 }
2949
2950                 if ( !$repo->hasSha1Storage() ) {
2951                         // Remove missing files from batch, so we don't get errors when undeleting them
2952                         $checkStatus = $this->removeNonexistentFiles( $storeBatch );
2953                         if ( !$checkStatus->isGood() ) {
2954                                 $status->merge( $checkStatus );
2955                                 return $status;
2956                         }
2957                         $storeBatch = $checkStatus->value;
2958
2959                         // Run the store batch
2960                         // Use the OVERWRITE_SAME flag to smooth over a common error
2961                         $storeStatus = $this->file->repo->storeBatch( $storeBatch, FileRepo::OVERWRITE_SAME );
2962                         $status->merge( $storeStatus );
2963
2964                         if ( !$status->isGood() ) {
2965                                 // Even if some files could be copied, fail entirely as that is the
2966                                 // easiest thing to do without data loss
2967                                 $this->cleanupFailedBatch( $storeStatus, $storeBatch );
2968                                 $status->setOK( false );
2969                                 $this->file->unlock();
2970
2971                                 return $status;
2972                         }
2973                 }
2974
2975                 // Run the DB updates
2976                 // Because we have locked the image row, key conflicts should be rare.
2977                 // If they do occur, we can roll back the transaction at this time with
2978                 // no data loss, but leaving unregistered files scattered throughout the
2979                 // public zone.
2980                 // This is not ideal, which is why it's important to lock the image row.
2981                 if ( $insertCurrent ) {
2982                         $dbw->insert( 'image', $insertCurrent, __METHOD__ );
2983                 }
2984
2985                 if ( $insertBatch ) {
2986                         $dbw->insert( 'oldimage', $insertBatch, __METHOD__ );
2987                 }
2988
2989                 if ( $deleteIds ) {
2990                         $dbw->delete( 'filearchive',
2991                                 [ 'fa_id' => $deleteIds ],
2992                                 __METHOD__ );
2993                 }
2994
2995                 // If store batch is empty (all files are missing), deletion is to be considered successful
2996                 if ( $status->successCount > 0 || !$storeBatch || $repo->hasSha1Storage() ) {
2997                         if ( !$exists ) {
2998                                 wfDebug( __METHOD__ . " restored {$status->successCount} items, creating a new current\n" );
2999
3000                                 DeferredUpdates::addUpdate( SiteStatsUpdate::factory( [ 'images' => 1 ] ) );
3001
3002                                 $this->file->purgeEverything();
3003                         } else {
3004                                 wfDebug( __METHOD__ . " restored {$status->successCount} as archived versions\n" );
3005                                 $this->file->purgeDescription();
3006                         }
3007                 }
3008
3009                 $this->file->unlock();
3010
3011                 return $status;
3012         }
3013
3014         /**
3015          * Removes non-existent files from a store batch.
3016          * @param array $triplets
3017          * @return Status
3018          */
3019         protected function removeNonexistentFiles( $triplets ) {
3020                 $files = $filteredTriplets = [];
3021                 foreach ( $triplets as $file ) {
3022                         $files[$file[0]] = $file[0];
3023                 }
3024
3025                 $result = $this->file->repo->fileExistsBatch( $files );
3026                 if ( in_array( null, $result, true ) ) {
3027                         return Status::newFatal( 'backend-fail-internal',
3028                                 $this->file->repo->getBackend()->getName() );
3029                 }
3030
3031                 foreach ( $triplets as $file ) {
3032                         if ( $result[$file[0]] ) {
3033                                 $filteredTriplets[] = $file;
3034                         }
3035                 }
3036
3037                 return Status::newGood( $filteredTriplets );
3038         }
3039
3040         /**
3041          * Removes non-existent files from a cleanup batch.
3042          * @param string[] $batch
3043          * @return string[]
3044          */
3045         protected function removeNonexistentFromCleanup( $batch ) {
3046                 $files = $newBatch = [];
3047                 $repo = $this->file->repo;
3048
3049                 foreach ( $batch as $file ) {
3050                         $files[$file] = $repo->getVirtualUrl( 'deleted' ) . '/' .
3051                                 rawurlencode( $repo->getDeletedHashPath( $file ) . $file );
3052                 }
3053
3054                 $result = $repo->fileExistsBatch( $files );
3055
3056                 foreach ( $batch as $file ) {
3057                         if ( $result[$file] ) {
3058                                 $newBatch[] = $file;
3059                         }
3060                 }
3061
3062                 return $newBatch;
3063         }
3064
3065         /**
3066          * Delete unused files in the deleted zone.
3067          * This should be called from outside the transaction in which execute() was called.
3068          * @return Status
3069          */
3070         public function cleanup() {
3071                 if ( !$this->cleanupBatch ) {
3072                         return $this->file->repo->newGood();
3073                 }
3074
3075                 $this->cleanupBatch = $this->removeNonexistentFromCleanup( $this->cleanupBatch );
3076
3077                 $status = $this->file->repo->cleanupDeletedBatch( $this->cleanupBatch );
3078
3079                 return $status;
3080         }
3081
3082         /**
3083          * Cleanup a failed batch. The batch was only partially successful, so
3084          * rollback by removing all items that were successfully copied.
3085          *
3086          * @param Status $storeStatus
3087          * @param array[] $storeBatch
3088          */
3089         protected function cleanupFailedBatch( $storeStatus, $storeBatch ) {
3090                 $cleanupBatch = [];
3091
3092                 foreach ( $storeStatus->success as $i => $success ) {
3093                         // Check if this item of the batch was successfully copied
3094                         if ( $success ) {
3095                                 // Item was successfully copied and needs to be removed again
3096                                 // Extract ($dstZone, $dstRel) from the batch
3097                                 $cleanupBatch[] = [ $storeBatch[$i][1], $storeBatch[$i][2] ];
3098                         }
3099                 }
3100                 $this->file->repo->cleanupBatch( $cleanupBatch );
3101         }
3102 }
3103
3104 # ------------------------------------------------------------------------------
3105
3106 /**
3107  * Helper class for file movement
3108  * @ingroup FileAbstraction
3109  */
3110 class LocalFileMoveBatch {
3111         /** @var LocalFile */
3112         protected $file;
3113
3114         /** @var Title */
3115         protected $target;
3116
3117         protected $cur;
3118
3119         protected $olds;
3120
3121         protected $oldCount;
3122
3123         protected $archive;
3124
3125         /** @var IDatabase */
3126         protected $db;
3127
3128         /**
3129          * @param File $file
3130          * @param Title $target
3131          */
3132         function __construct( File $file, Title $target ) {
3133                 $this->file = $file;
3134                 $this->target = $target;
3135                 $this->oldHash = $this->file->repo->getHashPath( $this->file->getName() );
3136                 $this->newHash = $this->file->repo->getHashPath( $this->target->getDBkey() );
3137                 $this->oldName = $this->file->getName();
3138                 $this->newName = $this->file->repo->getNameFromTitle( $this->target );
3139                 $this->oldRel = $this->oldHash . $this->oldName;
3140                 $this->newRel = $this->newHash . $this->newName;
3141                 $this->db = $file->getRepo()->getMasterDB();
3142         }
3143
3144         /**
3145          * Add the current image to the batch
3146          */
3147         public function addCurrent() {
3148                 $this->cur = [ $this->oldRel, $this->newRel ];
3149         }
3150
3151         /**
3152          * Add the old versions of the image to the batch
3153          * @return string[] List of archive names from old versions
3154          */
3155         public function addOlds() {
3156                 $archiveBase = 'archive';
3157                 $this->olds = [];
3158                 $this->oldCount = 0;
3159                 $archiveNames = [];
3160
3161                 $result = $this->db->select( 'oldimage',
3162                         [ 'oi_archive_name', 'oi_deleted' ],
3163                         [ 'oi_name' => $this->oldName ],
3164                         __METHOD__,
3165                         [ 'LOCK IN SHARE MODE' ] // ignore snapshot
3166                 );
3167
3168                 foreach ( $result as $row ) {
3169                         $archiveNames[] = $row->oi_archive_name;
3170                         $oldName = $row->oi_archive_name;
3171                         $bits = explode( '!', $oldName, 2 );
3172
3173                         if ( count( $bits ) != 2 ) {
3174                                 wfDebug( "Old file name missing !: '$oldName' \n" );
3175                                 continue;
3176                         }
3177
3178                         list( $timestamp, $filename ) = $bits;
3179
3180                         if ( $this->oldName != $filename ) {
3181                                 wfDebug( "Old file name doesn't match: '$oldName' \n" );
3182                                 continue;
3183                         }
3184
3185                         $this->oldCount++;
3186
3187                         // Do we want to add those to oldCount?
3188                         if ( $row->oi_deleted & File::DELETED_FILE ) {
3189                                 continue;
3190                         }
3191
3192                         $this->olds[] = [
3193                                 "{$archiveBase}/{$this->oldHash}{$oldName}",
3194                                 "{$archiveBase}/{$this->newHash}{$timestamp}!{$this->newName}"
3195                         ];
3196                 }
3197
3198                 return $archiveNames;
3199         }
3200
3201         /**
3202          * Perform the move.
3203          * @return Status
3204          */
3205         public function execute() {
3206                 $repo = $this->file->repo;
3207                 $status = $repo->newGood();
3208                 $destFile = wfLocalFile( $this->target );
3209
3210                 $this->file->lock();
3211                 $destFile->lock(); // quickly fail if destination is not available
3212
3213                 $triplets = $this->getMoveTriplets();
3214                 $checkStatus = $this->removeNonexistentFiles( $triplets );
3215                 if ( !$checkStatus->isGood() ) {
3216                         $destFile->unlock();
3217                         $this->file->unlock();
3218                         $status->merge( $checkStatus ); // couldn't talk to file backend
3219                         return $status;
3220                 }
3221                 $triplets = $checkStatus->value;
3222
3223                 // Verify the file versions metadata in the DB.
3224                 $statusDb = $this->verifyDBUpdates();
3225                 if ( !$statusDb->isGood() ) {
3226                         $destFile->unlock();
3227                         $this->file->unlock();
3228                         $statusDb->setOK( false );
3229
3230                         return $statusDb;
3231                 }
3232
3233                 if ( !$repo->hasSha1Storage() ) {
3234                         // Copy the files into their new location.
3235                         // If a prior process fataled copying or cleaning up files we tolerate any
3236                         // of the existing files if they are identical to the ones being stored.
3237                         $statusMove = $repo->storeBatch( $triplets, FileRepo::OVERWRITE_SAME );
3238                         wfDebugLog( 'imagemove', "Moved files for {$this->file->getName()}: " .
3239                                 "{$statusMove->successCount} successes, {$statusMove->failCount} failures" );
3240                         if ( !$statusMove->isGood() ) {
3241                                 // Delete any files copied over (while the destination is still locked)
3242                                 $this->cleanupTarget( $triplets );
3243                                 $destFile->unlock();
3244                                 $this->file->unlock();
3245                                 wfDebugLog( 'imagemove', "Error in moving files: "
3246                                         . $statusMove->getWikiText( false, false, 'en' ) );
3247                                 $statusMove->setOK( false );
3248
3249                                 return $statusMove;
3250                         }
3251                         $status->merge( $statusMove );
3252                 }
3253
3254                 // Rename the file versions metadata in the DB.
3255                 $this->doDBUpdates();
3256
3257                 wfDebugLog( 'imagemove', "Renamed {$this->file->getName()} in database: " .
3258                         "{$statusDb->successCount} successes, {$statusDb->failCount} failures" );
3259
3260                 $destFile->unlock();
3261                 $this->file->unlock();
3262
3263                 // Everything went ok, remove the source files
3264                 $this->cleanupSource( $triplets );
3265
3266                 $status->merge( $statusDb );
3267
3268                 return $status;
3269         }
3270
3271         /**
3272          * Verify the database updates and return a new Status indicating how
3273          * many rows would be updated.
3274          *
3275          * @return Status
3276          */
3277         protected function verifyDBUpdates() {
3278                 $repo = $this->file->repo;
3279                 $status = $repo->newGood();
3280                 $dbw = $this->db;
3281
3282                 $hasCurrent = $dbw->lockForUpdate(
3283                         'image',
3284                         [ 'img_name' => $this->oldName ],
3285                         __METHOD__
3286                 );
3287                 $oldRowCount = $dbw->lockForUpdate(
3288                         'oldimage',
3289                         [ 'oi_name' => $this->oldName ],
3290                         __METHOD__
3291                 );
3292
3293                 if ( $hasCurrent ) {
3294                         $status->successCount++;
3295                 } else {
3296                         $status->failCount++;
3297                 }
3298                 $status->successCount += $oldRowCount;
3299                 // T36934: oldCount is based on files that actually exist.
3300                 // There may be more DB rows than such files, in which case $affected
3301                 // can be greater than $total. We use max() to avoid negatives here.
3302                 $status->failCount += max( 0, $this->oldCount - $oldRowCount );
3303                 if ( $status->failCount ) {
3304                         $status->error( 'imageinvalidfilename' );
3305                 }
3306
3307                 return $status;
3308         }
3309
3310         /**
3311          * Do the database updates and return a new Status indicating how
3312          * many rows where updated.
3313          */
3314         protected function doDBUpdates() {
3315                 $dbw = $this->db;
3316
3317                 // Update current image
3318                 $dbw->update(
3319                         'image',
3320                         [ 'img_name' => $this->newName ],
3321                         [ 'img_name' => $this->oldName ],
3322                         __METHOD__
3323                 );
3324
3325                 // Update old images
3326                 $dbw->update(
3327                         'oldimage',
3328                         [
3329                                 'oi_name' => $this->newName,
3330                                 'oi_archive_name = ' . $dbw->strreplace( 'oi_archive_name',
3331                                         $dbw->addQuotes( $this->oldName ), $dbw->addQuotes( $this->newName ) ),
3332                         ],
3333                         [ 'oi_name' => $this->oldName ],
3334                         __METHOD__
3335                 );
3336         }
3337
3338         /**
3339          * Generate triplets for FileRepo::storeBatch().
3340          * @return array[]
3341          */
3342         protected function getMoveTriplets() {
3343                 $moves = array_merge( [ $this->cur ], $this->olds );
3344                 $triplets = []; // The format is: (srcUrl, destZone, destUrl)
3345
3346                 foreach ( $moves as $move ) {
3347                         // $move: (oldRelativePath, newRelativePath)
3348                         $srcUrl = $this->file->repo->getVirtualUrl() . '/public/' . rawurlencode( $move[0] );
3349                         $triplets[] = [ $srcUrl, 'public', $move[1] ];
3350                         wfDebugLog(
3351                                 'imagemove',
3352                                 "Generated move triplet for {$this->file->getName()}: {$srcUrl} :: public :: {$move[1]}"
3353                         );
3354                 }
3355
3356                 return $triplets;
3357         }
3358
3359         /**
3360          * Removes non-existent files from move batch.
3361          * @param array $triplets
3362          * @return Status
3363          */
3364         protected function removeNonexistentFiles( $triplets ) {
3365                 $files = [];
3366
3367                 foreach ( $triplets as $file ) {
3368                         $files[$file[0]] = $file[0];
3369                 }
3370
3371                 $result = $this->file->repo->fileExistsBatch( $files );
3372                 if ( in_array( null, $result, true ) ) {
3373                         return Status::newFatal( 'backend-fail-internal',
3374                                 $this->file->repo->getBackend()->getName() );
3375                 }
3376
3377                 $filteredTriplets = [];
3378                 foreach ( $triplets as $file ) {
3379                         if ( $result[$file[0]] ) {
3380                                 $filteredTriplets[] = $file;
3381                         } else {
3382                                 wfDebugLog( 'imagemove', "File {$file[0]} does not exist" );
3383                         }
3384                 }
3385
3386                 return Status::newGood( $filteredTriplets );
3387         }
3388
3389         /**
3390          * Cleanup a partially moved array of triplets by deleting the target
3391          * files. Called if something went wrong half way.
3392          * @param array[] $triplets
3393          */
3394         protected function cleanupTarget( $triplets ) {
3395                 // Create dest pairs from the triplets
3396                 $pairs = [];
3397                 foreach ( $triplets as $triplet ) {
3398                         // $triplet: (old source virtual URL, dst zone, dest rel)
3399                         $pairs[] = [ $triplet[1], $triplet[2] ];
3400                 }
3401
3402                 $this->file->repo->cleanupBatch( $pairs );
3403         }
3404
3405         /**
3406          * Cleanup a fully moved array of triplets by deleting the source files.
3407          * Called at the end of the move process if everything else went ok.
3408          * @param array[] $triplets
3409          */
3410         protected function cleanupSource( $triplets ) {
3411                 // Create source file names from the triplets
3412                 $files = [];
3413                 foreach ( $triplets as $triplet ) {
3414                         $files[] = $triplet[0];
3415                 }
3416
3417                 $this->file->repo->cleanupBatch( $files );
3418         }
3419 }
3420
3421 class LocalFileLockError extends ErrorPageError {
3422         public function __construct( Status $status ) {
3423                 parent::__construct(
3424                         'actionfailed',
3425                         $status->getMessage()
3426                 );
3427         }
3428
3429         public function report() {
3430                 global $wgOut;
3431                 $wgOut->setStatusCode( 429 );
3432                 parent::report();
3433         }
3434 }